Aeromodeller July 1966

JULY 1966 TWO SHILLINGS & SIXPENCE USA & CANADA SO CENTS Modeller NOW INCORPORATING HOBBY MAGAZINE

HAWKEI TYPHOOI Super-plans QUICKSTART

MODEL THE GREATEST DIESEL RANGE OF HANDBOOK SPORTS FLYERS'

Free with every Quickatart diesel this in­ valuable handbook coven the handling, care ENGINES and maintenance of model dleieli. Prepared by experts, it is well illustrated and an invaluable aid to trouble free operation. Send l/3d . (P.O. or stamps) for your copy CALL IN AT YOUR MODEL SHOP TODAY — todayl in case of difficulty write direct to: QUICKSTART 1 pint 6/- DAVIES-CHARLTON LTD. \ pint 3/6 ACCESSORIES HILLS MEADOW, DOUGLAS. ISLE OF MAN ★ CONTROL LINE HANDLE ★ ENGINE TEST STAND ★ NYLON PROPELLERS Marine Engines ★ FULL RANGE OF SPARES ★ QUICKSLIP CONNECTOR DART. MERLIN, SPITFIRE. SABRE. ★ QUICKSTART GLOWPLUGS ALSO AVAILABLE AS A MARINE ENGINE COMPLETE WITH FLY­ ★ E.G. 98 E.G. 99 WHEEL AND WATER COOLED ★ E.G. 200 HEAD Editorial Director D. J. LAIDLAW-DICKSON EDITOR R.G. MOULTON

Assistant Editor J. FRANKLIN Modeller Advertisement Manager LIONEL HARRIS

NOW INCORPORATING ______MODEL AIRCRAFT

July 1966 VOLUME XXXI No 366 COMMENT As the contest season moves into top gear with the fullest rally calendar we CONTENTS have ever known, it is time to take stock of several side issues connected with HEARD AT THE HANGAR DOORS 374 acromodelling. A reader refers to our STRICTLY SIMPLE—K.K. Gyron review 376 "image” on P.379 and it is that which concerns us most. READERS LETTERS 378 We are reaching the stage where a TOPICAL TWISTS 380 sensitive public w ill seize upon any opportunity to denounce the hobby LATEST ENGINE NEWS By Peter Chinn 381 in terms of danger. Accidents and near •OPUS”—free flight delta 382 misses among inquisitive bystanders who crowd the local field fliers have AIRCRAFT DESCRIBED—Hawker Typhoon 384 provided disturbing arguments. The moral BEE-BABY—Full size plans 386 is to FLY W ITH CARE and—dare we say it— become insured. ENGINE TEST—D.C. Quickstart Spitfire 396 Which brings us to another issue, that SILENCERS AND NOISE—part two 398 of allegiance to the National Body, the S.M.A.E. How many of those who SOUTH AFRICAN NATIONALS 401 enjoyed the "Nats” at Hullavington were AUSTRALIAN NATIONALS 402 not members of the S.M.A.E. we dare not guess. These enthusiasts, for whom BASIC AEROMODELLING—Rubber Motors 404 actual contests mean little, may not GOLDEN WINGS CLUB 406 be aware that the facilities they so often relish at airfields are negotiated entirely FREE FLIGHT COMMENT by John O’Donnell 407 by the Society. If you’ve any inclination to NORDIC CHAMPIONSHIPS 408 join the body which is formed of. by. and for aeromodellers—don’t hesitate, CLUB AND CONTEST NEWS 409 send your application in right now! COMING EVENTS 410 Third of our side issues is that concerning ignorance of the rules. It never ceases to astound us how wide the gulf is between those who know AN IMAP^- HOBBY MAGAZINE enough to skate around rule ambiguities to their advantage and those who simply never read a rule book! Time indeed to examine our “ Image” or also MODEL BOATS . MODEL CARS . RADIO we shall never lose that “ playing with CONTROL MODELS A ELECTRONICS . MODEL toys” identity. ENGINEER and MODEL RAILWAY NEWS. cover ; This periodical I» sold subject to the following conditions: that It shall net, without (he written consent i of the publishers be lent, re-sold, hired-out or otherwise disposed ol by way of Trade oroept at the full Typhoons intrude. Fast action by 193 Squadron, Royal Air I retail price ol2/6d or SO cents and that It shal l not be lent, re-sold, hired-out or otherwise disposed of In a Force is portrayed by artist Laurie Bagley. Retro-modded | mutilated condition, or In any unauthorised cover by way of Trade; or affixed to or as part of any publica­ after their Dieppe action white noses were first seen, these tion ol advertising, literary or pictorial matter whatsoever. “ 7/flie" IBs were based at Harrowbeer in Devon 23 years ago. and disptoy their cannon spring covers plus the mis­ Second class postaoe rates paid at New York. N.Y. Registered at the G-P.O- for transmission by Canadian Post. American enquiries regarding subscriptions, news stand sales and advertising should be spelled nick-name of oircroft "T". for which your editor sentto AEROMOOELLER, Eastern News Distributors Inc.. 155 West 15th Street, New York. N.Y. 10011. was to blame! U.S.A. U S. A . and Canada direct subscription rote SS Including Index. Direct subscription rate 35/- per annum Inc ludlng December edition and Index. Those orders should be addressed to Argus Press Ltd., 23/37 Tudor Street. London, E.C.4. AEROMOOELLER incorporates the n e x t m o n th MODEL AEROPLANE CONSTRUCTOR and MODEL AIRCRAFT and Is published on the third Friday of each month prior to date of publication by:- A smart little stunter. reduced in size from luri Sirotkin's famous •‘Spacehound” , suits MODEL AERONAUTICAL PRESS LTD· 2.5-3.5 cc. engines. Full sire plan for a Cox 010 free flighter, plus massive picture spread of the 13-35 Bridge S tre e t, Hemel Hem pstead, H erts British Nats on special pull-out large sheet. More on tuned length exhausts. D.H.2 drawings and a Tel.: Hem el Hempstead 2501 (Mon.-Frl.) tip top report on the Nats in full detail. Out on July 15. Recognised SOPER KITS e n d Accessories

36 in. Span A TOP RATE PERFORMER FOR ONLY 49/5 UPtR STREAMLINED for Single Channel Radio S Control for Rudder (and 'flip-up' elevator with MINI-ROBOT rubber driven actuators. Also Pulse-Proportional PORT radio Plane with the Systems. For Motors of I to 1.49 cc. S functionally rugged, stable and Price (Inc. P.T.) 79/11 dependable features of the ROBOT — plus tricycle undercarriage. For to 1 cc. with Single

3 Specialized Radio Designs ROBOT All weather trainer for Single Channel. For 1.49 up to 3.5 cc. Britain's Best. 4S in. Span. Price (Inc. P.T.) 89/8 SKYLANE Classic lines for Scale Radio. For motors 1.49 to 3.5 cc. Single and Light­ weight Radio. Span 54 in. Price (inc. P.T. 112/6 VISCOUNT Optional Wing Scan 48 in. for Free-flight. $4 in. for Radio. For up to 3.5 cc. Single and Light Multi. Price ( inc. P.T.) 128/1

THE VERSATILE GLO-STAR Air-cooled, Water-cooled and for Radio Control. Complete range of accessories available. Marine Mount, Manifold, Silencer. Flywheel. Coupling, etc. Glo-Star 3.4 cc. 132/9 Glo-Star R/C 147/6 RADIO CONTROL ACCESSORIES Marine Glo-Star 170/8 Marine G-S R/C 186/8

SEND FOR WEBRA FREE LEAFLET Dural U/C 10 s.w.g. 9/6 Axle Bolts and Nuts 1/9 'Concord' Double Coil Nose-wheel strut 6/11 Unit with 2! in. 'Mini-Concord' Single Ceil Note-wheel strut 2/11 Sponge Wheels 19/10 Nylon Control Horns 1/9 Polythene Clunk Tanks: 2 oz. S/6 K-Link Quick Clips- 3/11

MODEL AIRCRAFT < B’MOUTH> LTD. NORWOOD PLACE · BOURNEMOUTH

DISTRIBUTORS IN U.S.A.: WESTEE HOBBY IMPORTS. 5808 West Chicago Avenue 51. III., U.S.A. DISTRIBUTORS IN CANADA: ACADEMY PRODUCTS LTD.. 106 Tycos Drive, Toronto 19. DISTRIBUTORS IN AUSTRALIA: GEORGE PIZZEY Λ SON LTD.. 131-141 johnston Street. Fitzroy N.6. Melbourne. KINDLY MENTION "AEROMODELLER" WHEN REPLYING TO ADVERTISEMENTS JUST LIKE

REAL THING!

The mighty Flying Fortress, famous American bomber of the Second World War. W ith an impressive performance at high altitudes, it flew on many daylight bombing missions with the U.S. Eighth Air Force. This detailed 1 /72 scale model has 101 parts and costs only 7/6. There are over 200 Airfix kits covering 13 different series. And at 2 /- to 17/6 afford to make all your models Just like the real thing I

t STOP PRESS FREEDOM FIGHTER AIRFIX ϋ!!ίΙΑΜΤ 1/72 scale model of the N orthrop F-5A lelectid by the U.S. Military Aid Programme for u*e in Iran. I L___ Nationalist China and the Philip­ pine*. Quickly accelerates to supersonic speeds. Outfights faster, larger aircraft. CONSTRUCTION KITS 47-part Kit only 2/·. Also Westland Scout 46-part Kit Jctsf-/ifce. -the, rea/ -thing / only If-.

From model and hobby shops, toy shops and F. W. Woolworth

KINDLY MENTION “ AEROMODELLER” WHEN REPLYING TO ADVERTISEMENTS EmupnEr SUPER K ITS DON’T BE BULLIED! W H Y BE PUSHED AROUND? . . . SURPRISE AMATEUR 44" span to take .8 ANY WHO DARES ASSAULT YOU! to 1.5 cc. engines and specially designed for You Too Can Become A Fearless Exponent of 2- to 6-channel radio (also single-channel). A superb example of CHINESE KUNG-FU KARATO kit prefabrication, in­ cluding formers and .. .the authentic Chinese Self-Defence A rt full length die-cut sides in BALSA-PLY. th a t DISABLES INSTANTANEOUSLY ON CONTACT Price £4.12.6 Radio installation is shown on a separate Because of religious belief forbidding the ancient Cbinese monks two-colour plan. from carrying weapons, litis weaponless system of super-human fighting was founded and developed by them to such an extent that they could successfully resist and defeat bloodthirsty robbers who attacked and ...NEW! slayed them just for the robes and trin­ kets they wore. Taught exclusively and AMIGO II handed down only to selected A new LARGER disciples, who were sworn to complete model— 79" span— secrecy. This‘ devastating art, with its specially developed amazing power to paralyse, borrow with 2- to 4-channel or multiply fighting strength ten-fold radio in mind (sepa­ and to disable instantaneously on rate R/C installation contact even the strongest man on plans included). earth without the use of brute Price £4.17.6 strength, is now completely revealed and brought up to date for the first IfO tt FU time in the English language by Leong A T Fu, the acknowledged _ _greatest living ^ * * master of Kung-Fu Karato today. LEARN QUICKLY AT HOME, THIS FASTEST. EASIEST. AND MOST EFFECTIVE SELF-DEFENCE SYSTEM OF ALL TIME! Ask any high-ranking blackball Karato or iudo expert who bus made the mistake of lighting a Kung-Fu master and he will tell ONLY you why he would rather fight any live armed persons trained in 21/6 any other forms of coinbat rather than meet just one unarmed KUNG-FU MASTER. That is because what they learned from Karato, Jiu-Jitsu, Judo, Aikido, the so-called Westernised Kung- Easy to assemble, very good Fu and all other martial arts combined, actually consist of only ^Contest^pe^fonnanc^^ performance. A perfect trainer. a small part of authentic Chinese KUNG-FU fighting which leaked out of China to Japan in ancient days to found their combat GIANT HS-19 ‘CLOU* for R/C or FREE FLIGHT! system s. The BIG model with the ACE. BODILY SIZE. SfiX AND SUPERIOR STRENGTH BIG PERFORMANCE^— DON'T COUNT! and specially designed Because KUNG-FU disables ON CONTACT and because KUNG- to accommodate single FU uses amazingly simple secret anatomical movemenis and FLY AS or multi R/C (includ­ steps instead of brute strength to overcome attackers, sex. size GLIDER OR ing proportional!). Pre- and age do not matter very much. In fact, the greatest Kung- POWER! fabbed material· fur FU master of all time, the Honourable Lee Hua-Tsein (Sheng giant 97" span wing Dynasty) was a slender scholarly looking man. Yet this man 199/6 for towline soaring; developed this super-human skill to such an extent that his name and 75" span fo r was feared throughout the Orient in his time. When he was Super de luxe kit ■lope soaring or finally invited by the Emperor of China to demonstrate his skill, includes everythin] ou need to build! Power Convert loo. the Emperor was astonished to find the man whose very name was enough to put to flight the most ferocious ruffian, was not a fierce giant, but a simple, gentle, quiet, scholarly man who stood FLORIDE . . . 172/6 barely five feet and weighed less than 1001b, fully clothed. Not Super 55" span R/C much of a person to look at, but nonetheless a man who put multi trainer for 2 out of action within a few minutes 20 hand-picked members of to 10 channels. the famed IMPERIAL GUARD. Engines .19 up. YOU LEARN techniques that can OUTWIT. OUTFIGHT, OUT MANOEUVRE NOT JUST ONE OR TWO, BUT THREE, PIPER $pan FOUR. FIVE OR EVEN A SMALL MOB OF ARMED HOODLUMS. And in order to safeguard yourself, many of these TRIPACER F/F or R/C scale . techniquee are delivered with a minimum of close body contact. 99/6 With your new power NOTHING CAN SCARE YOU, and you can live with full confidence in the knowledge that you can defend yourself, protect the weak and deal successfully with N O TH IN G BUT THE BEST is ever ANY MAN. ANY ASSAILANT, ANYTIME, ANY SITUATION sent out from the world-famous G raupner factory In G erm any, AND ANYWHERE. With KUNG-FU KARATO I guarantee CARAVELLE . .. 230/- you the ability to live, to work and to walk without fear. which is why we distribute and Larger version of the 'Floride'^^i; For complete FREE DETAILS, send your name and address to confidently recommend these lines and fully aerobatic on 8- 12-chan- me by AIR MAIL and I will send you my FREE PROSPECTUS to British aeromode Hers. And there nel. Span 71". Wonderful de luxe ALSO BY AIR MAIL. are lots more models In the kit makes an R/C model the Scad the coupon TODAY! NOW!! This offer may never be Graupner range to choose from. EQUAL OF ANY IN THE WORLD repented again. MAILTHIS NO-RISKCOUPON TODAY! SEE THEM A T YOUR MODEL SHOP

HONORABLE MASTER LEONG FU 1 (Dept. KO/2) 119 ANDERSON RD., IPOH, MALAYSIA. Please send by air free details of CHINESE KUNG-FU KARATO to:— NAME ______ADDRESS I ;J

KINDLY MENTION “ AEROMODELLER" WHEN REPLYING TO ADVERTISEMENTS Holiday offer from Bostik! SAVE £1.10.0 on this expanding suitcase This is your chance to buy a superbly designed You need Bostik round the house, in the car and on H O LID A Y S . suitcase for your holidays at a superbly low price! Here’s a list of the different Bostiks: Bostik 1. A clear, clean, general-purpose adhesive. 1/ 11. 8ostik 2. For heavy outside sticking jobs. 2/9 and 3/6. Holds far more. You will be amazed at how much you can Bostik 3. Suitable for sticking plastics and “ Formica” . 2/9, 4/3 and 8/-. Bostik 4. Made to fix every sort o f glazed tile. 3/6 and 7/6. pack into this blue, specially designed 25-inch Revelation Bostik 5. W hite sealing strip, quick and clean to use. In packs 2/6. suitcase. It has rustless, expanding lock fittings and a new Bostik 6. Outdoor scaling compound for gaps around the house and on shape to take far more than old-fashioned suitcases. the car. 3/6. Bostik 7. A new super-strength adhesive which does your “ impossible” sticking jobs. 5/6. (A ll prices are maximum retail.) Saves you £1.10.0. The suitcase— which will last a life­ time— is worth £5.5.0. But you can get it for 75 - if you · · · CUT OUT THIS ORDER FORM — "1 send us two Bostik cartons. One of these must be a Bostik Γ Please send me your expanding suitcase. I enclose a ^ No. 1 carton. The second must be a carton or pack from cheque/P.O. (made payable to· Bostik Suitcase Offer) for £ 3.15.0 and two Bostik cartons. block capitals please any other Bostik. I Ν Λ Μ Β ...... I ADDRESS ...... How to get your suitcase. Send the order form on right I - ...... - B o s t ik I to: Bostik Ltd., Ulverscroft Road, Leicester. Offer only The word'Bostik' Is » tredemark registered ir the United Kingdom open while stocks last. Get in quick! L endmany other countries. KINDLY MENTION “ AEROMODELLER" WHEN REPLYING TO ADVERTISEMENTS have enjoyed a well-earned reputation amongst the world’s most discerning modellers for quality and consistency. W ith formulations that are kept continually up-to-date to ensure long engine life, easy starting, high performance and freedom from unwanted deposits, and the added insurance of the finest lubricating oils obtainable today these fuels are the best you can buy. Every batch of Mercury Fuel is mixed under the most careful control, and double filtered before being canned. This guarantees that the fuel you buy in the Mercury can is always up to the same high standard of formulation and cleanliness. If you cannot get Mercury fuel in YOUR local model shop, write direct to us giving their name and address.

DISTRIBUTED EXCLUSIVELYBYE. K E IL & C O . LTD WICKFORD · ESSEX

KINDLY MENTION “ AEROMODELLER” WHEN REPLYING TO ADVERTISEMENTS The TROUBLE SOME PEOPLE GO TO . . . . Not content with pinning parts down over a flat building board, many modellers today go in for building jigs. Lots of these are true engineering jig-fixtures, quite elaborate in conception and capable of being adjustd to various sizes of wings or tailplanes, different dihedral angles, and so on, to accommodate different model designs. The complete jig then gives positive and accurate alignment of ribs, spars, leading and trailing edges and ‘one piece’ assembly. Jig-fixtures— like the Broadfield Uni-Wing-A-Jig illustrated—are particularly useful for building wings with symmetrical or semi- symmetrical aerofoil sections quickly, accurately, and easily. Once set up, too. it is an easy matter to duplicate spare wings, etc., and know that they will be exactly the same. It’s a new technique which is gaining in popularity for building R/C and control line models; and there are a whole variety of different types and designs of jigs and fixtures becoming available. It’s still what comes out of the jig that finally matters, however. Whether you are a ‘pin it down flat’ modeller or a jig-builder, the resultant structure is only as good as the balsa you put into it—and however much methods change, balsa is still unrivalled as an air­ frame material where performance counts. Jigs can speed construc­ tion and help you build more accurately, but it will still be the quality of balsa that counts in the long run. We don’t know an awful lot about building jigs (so please do not write us for further information): but we are very experienced in balsa. Our whole job is to produce the best possible balsa for aeromodelling use. That, in fact, is what the Solarbo name has meant for a long, long time—the best balsa you can buy, anywhere. Look for the Solarbo stamp on every piece of sheet and block, which is an automatic guarantee of consistent high quality. We go to a lot of trouble to ensure that this is so.

QoHacpt*)© |T} Q [1 0 β I THE BEST YOU CAN BUY 1 SOLARBO LTD., ALWAYS ASK FOR IT BY NAME COMMERCE WAY, LANCING, SUSSEX

KINDLY MENTION “ AEROMODELLER” WHEN REPLYING TO ADVERTISEMENTS FROM S. H. GRAINGER! T iip M a x the Midlands’ leading model shop

A FABULOUS RANGE OF *MAIN AGENTS FOR ALL LEADING MAKES HIGH-POWERED DIESELS for SPORT or CONTEST flying * KITS * ENGINES * SPARES * REPAIRS RIPMAX F-25 °-'y 69/6 * RADIO c o n t r o l e q u i p m e n t * Here’ s real performance—over 1/3 .,lilil'j:iill!lll!lll!lillllllllllll!i;lilElillll horsepower — at a price you can ENGINES R/C Wing Kits KITS EQUIPMENT Polystyrene afford! Sturdy dependability is built A.M.. Cox. D.C. Aerokits Enya, Eta. Fox, Citizenship Wings DeBolt right into this design to bring Frog, Fuji. Furaba Monokote Enterprise out the best in any free flight Merco. M E.. F & M Frog or control line model. McCoy, O.S., Flight Link COMPLETE Goldberg P.A.W., Grundig SERVICE KeiI Kraft Super Tigre, MacGregor Mercury Swept volume 2.5 cc. Gannet 15 cc., DEPT, Marinecraft Bore .591 in. (15 mm); Webra Modelectric Schuco Stroke .551 in. (14 mm). O.S. for Radio Orbit Sterling SERVOS Raven and Servo Topflite Bonner Rcmcon REPAIRS Veco Citizenship Veron RIPMAX F-10 RIPMAX F-15 Climax Elmic ACCESSORIES I cc. (.06) displacement. A 1 cc. (.06) displacement. A Futaba n. Mylar Hinges. CamLoc Fasteners, Williams fabulous sports engine, built with “over-square” layout Graupner X I Wheels. Williams Pilots. Xcals. Aerials, to last! Develops 1/8 HP at for racing performance. Modelectric Plugs & Sockets. Kwik Links, Trim Bars. Dubro O.S. Wheels. Veco Wheels, Fireball Plugs. Relays, 15,000 r.p.m. Bore .394 in. Develops approx 1/5 HP at R Η K Transistors, Mac-Packs. Front (crankshaft) rotary 16.000 r.p.m. Bore .492 in. iinraoniiiiiiiiiimiiimiw;, i :ip ! ·Μΐ!ΐιΐ!ίΐ!ΐϋΐ!ΐι:ι: . Stroke .472 in. Weight only Stroke .472 in. Weight 3i oz. CALDMORE MODELS induction. only 62/6 108 CALDMORE ROAD— WALSALL— STAFFS only 59/6 T e l 2 3 3 8 2 SEE THEM A T YOUR MODEL SHOP DISTRIBUTED BY RIPMAX — NEW MODEL SHOP IN LANCASHIRE NEW MODE .... Λ m . cov. zr**i z EMCO OF COVENTRY NOTE Q_ m FOR M AIL ORDER SERVICE o $ THE X OPENING 62 LOWER FORD ST. COVENTRY <~n Z PRICE! o Ω 16th June D THE EMCO ACE Mk. II O This Transmitter Σ co and Receiver has X been re-designed 5 O LU LANCASHIRE’S -Ό with longer aerial Z and constant carrier (keyed tone) for controlling Model L A T E S T Aircraft and Boats X > and w ill give a z good performance < HORRY HAVEN n > with excellent CO range. X The Transmitter is of the single valve type, operating on 7 ST. AWES MODEL & FISHING 135 volt or two B oCL. 101 for HT and 1* X volt for L.T., CO TACKLE CENTRE AD35. The Receiv­ z er is re-designed o with specially selected Four Transistors, RelaykJS. O o Tone operated with special Ferrite Potted Coil, High O 4 JK St. A l b a n s I t o a i l . Q Ferrite Chokes and is lightweight, vibration and Σ CO crash proof if packed loosely in foam rubber. Batteries X § St. Aniies-on-Sea, Lancs. o are three U7 pencils or 4$ volt flat. T) o n l y £ 1 1 - 1 9 - 6 Complete Less Batteries Trade enquiries invited 30H M 3N 3dlHSVDNV1 Nl dOHS 13QOW M 3N

KINDLY MENTION "AEROMODELLER” WHEN REPLYING TO ADVERTISEMENTS ALL SYSTEMS GO...

BETTER WHEN YOU KNOW WHAT n n e ' c n a YOU ARE DOING WITH RiC GEAR GET AN Μ.Λ.Ρ. R(C BOOK NOWI

MARVELLOUS FOR MULTI Multi channel control is probably what most radio control enthusiasts seek, eventually, to achieve. But all c o n t ! ° * too often, introduction to this more advanced stage of the radio control hobby is fraught with problems brought about by sheer lack of knowledge of the subject. It is for this reason, to help the beginner over his problems, that MULTI CHANNEL RADIO CONTROL has been intro­ duced. Here the beginner will find explained in simple terms the working of multi channel equipment wh:ch so often is a mental barrier and can itself lead to dismal failure. Today, people are regularly entering the radio control hobby without previous modelling experience. Some years ago, these newcomers would have begun their radio control career with single channel equipment, but today it is not at all uncommon for a newcomer to begin radio control activities with multi channel equipment. For these people especially, there are no short cuts to multi channel success, and for these, or any beginner, MULTI CHANNEL RADIO CONTROL is an indispen­ sable reference work. This publication has a bright, full colour photo dust cover, cloth covered boards and gold blocked title on spine. There are 112 pages size 8jx5± ins., printed on high quality gloss paper with numerous line and photo illustrations. Available from booksellers, newsagents i 111yjv* v i on or direct from the publishers | j £

• SPECIALLY FOR SINGLE

SINGLE CHANNEL RADIO CONTROL. R. H. Warring. 7i x 4$ ins. Drawn on 2 colour card cover. 50 figures, sundry tables, 85 pages. 40 photo illustrations. A simple introduction to radio control of both aircraft and boats, covering receivers, transmitters, actuators, es­ capements, servos, aircraft types and engines, aircraft systems, boat and vehicle systems, installations operation, faults and trouble shooting. Twelve appendices. Best value offered on this subject.

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KINDLY MENTION “ AEROMODELLER" WHEN REPLYING TO ADVERTISEMENTS ΠΞΓ [ g j THE BEST OF Today's keen modeller demands the KITS · ENGINES * R/C EQUIPMENT best kits, engines, R/C equipment, and accessories that are available from British manufacturers and those in Amorica, the Continent and now Japan. GOLDBERG SHOESTRING V.K. CHALLENGER In fact he demands "the Best of Both Worlds” . Our ondoavour is to give you just that kind of service. We import direct hundreds of items, most of which '-V wo can recommend as being the best in their class. Whether you want an expen­ sive full-house proportional or just a set Multi-model. 60' span. 665 sq. ins. area. of blind nuts and bolts, our service is the Steerable nose gear. For 35-49 engines. A first class kit that goes together like a charm. MAIL ORDER to any part of the World. £10.7.0. (postage 3/6) C.O.D. available for U.K. orders only Scale Goodyear Pylon Racer designed and (you pay the postman). kitted by Carl Goldberg. A lino kit and a GOLDBERG SKYLANE splendid model. Span 54 in. Area 540 sq. ins. AIRALMA TIPSY JUNIOR Flying weight 44-5lbs. £8.19.6. Motors 29-40. DENIGHT SPECIAL

This semi-scale model for the popular 049 This Sterling kit of Joe Martin's sensational glowmotors has proved the best selling kit 50 In. pylon racing winner makes a fast con­ we have ever handled and is the ideal model test model with a terrific performance. Fully for the beginner to scale modelling. Recom­ die-cut parts, plastic cheeks and pants, mended from every point ot view. Span 42 in. sprung alum, landing gear etc. Motors 29-40. Area 244 sq. ins. For single channel rudder This completely pre-fabricatod kit from a new £9.8.6. French manufacturer, Robert Lestourneaud, only R/C £2.19.6. is a master production of great merit. True JENSEN K W IK FLI MK II 1 /5th scale model for 6-10 channel or pro­ portional. A ll parts custom cut and sanded. 52 in. span. For motors 29-35 £15.3.6. MERC0 ENGINES Mercos are now STAFFORD COMANCHE firmly established as the World's best in * R/C engines. The new Mk.ll with twin plug head and bronze end and piston bearings This Phil Kraft design has been kitted by is a revelation. this new firm to make one of the easiest-to- We have ALL build models of all time. 60 in. span and Mercos in stock. 620 sq. ins. area, for 35-49's. A superb Here is a really NEW kit. 2 in. scale model of a production. £22.16.0. (post 5s.) fine aircraft and fully pre-fabricatcd to the 61 Mk.ll £13.17.6. 49 Mk.ll £12.15.9 highest standard. Fibre glass motor cowl, GOLDBERG SENIOR FALCON jig built fuselage. A ll balsa and ply parts 61 Mk.l £12.15.9 custom cut and sanded. Makes into a 49 Mk.l £11.19.8 splendid model for full multi or proportional. 72 in. span. 815 sq ins area, for 49-61 's. £25 5.0 (post 6s.) 29 and 35 R/C £7.12.6. 29 and 35 stunt £5.19.6. V.K. CHEROKEE ENGINES A firm favourite as a sound Multi or pro­ McCoy 35 R/C -121/6; McCoy 35 Stunt - 75/6; portional trainer with a contest performance. McCoy 19 R/C - 103/-; McCoy 19 Stunt 57/6. Prefabbed kit of highest quality balsa with all Cox TD Special Mk.ll - 177/8; ETA Elite 15D - 148/6. O.S. 15 R/C - 151/3; O.S. 19 R/C hardwear. Great value at £11.18.0. ____ 169/5; O.S. 40 R/C - 176/3. Cox Babe Bee TO AVOID DISAPPOINTMENT 049 - 42/6; Cox Golden Bee 049 - 52/6. Cox Medallion 049 - 85/-; Cox Medallion 09 -107/-; A fine semi-scale model that has proved to PLEASE NOTE THAT OUR Cox Medallion 15 - 127/3; Cox TD 09 - 116/-; be easy to build and a cinch to fly. Fully pre­ EARLY CLOSING DAY IS Cox TD 049 - 107/-. AM diesels 1cc - 69/8; fabricated kit with accurately die-cut parts. THURSDAY 1.5ccs - 74/8; 2.5ccs - 79/9. We have up to 250 65 in. span. 754 sq. ins. wing area. For multi­ Mon. T u g s . Wed. Fri and Sat. engines to choose from. We pay good prices channel or proportional. Motors 49-61 9 a.m. - 5.30 p.m. for second-hand engines in good condition, £12.19.0. either cash or in part exchange.

WORLD WIDE MAIL ORDER OUR SPECIALITY. All orders sent or acknowledged by return. C.O.D. service on home orders only over £2 value . You pay the postman. Send S.A.E. for reprints of our previous advertisements.

KINDLY MENTION "AEROMODELLER” WHEN REPLYING TO ADVERTISEMENTS BOTH WORLDS !!! ACCESSORIES MATERIALS FINISHES POLYSTYRENE WINGS FUEL T A N K S Topflite wood new pattern. 10 x 6 Raven RV10, lOCh bi-si mu "308" polythene clunk tanks 1oz 3/6.11 x 6; 12x5; 12x64/6; 14x6 superhet £77.15.6 5/6; 2oz 6/-;6oz6/6;8oz7/6. 5/6. Ariel 6Ch superhet £39.10.0 Veco C/L baffle tanks 3ozs; Topflite nylon:— 5* x 3; 5* x 4; SINGLE CHANNEL 3jOzs;4ozs. 13/9 6 x 3; 6 x 4 2/6; 7 x 4; 7 x 6 4/-; MacGregor Minimac receiver Mercury 100 and 125ccs baffle 8 X 4; 8 x 6 6/-; 9 x 4; 9 x 6; 10 x 6 £8.19.6 tanks 7/6 8/6 ; 11 x 4; 11 x 6 10/-; 12x615/-. MacGregor all-trans. Xtl trans­ Superbly engineered expanded Wide selection of all types R/C &. Flugel fibre-glass T/R 7 x 8 mitter £10.19.6 polysytrene wings covered in C/C tanks always in stock. (recommended) 15/11. MacGregor Terrytone RX kit Mahogany veneer and selcctod FUELS AND FUEL SPINNERS and fittings £5.19.6 balsa. Wing halves ready to join. MATERIALS. Veco aluminium. Needle nose MacGregor Tone Tx kit £4.5.0 Now ready tor Senior Falcon, VK 1 i " 8/6 ; 1 Γ 9 /9 ; 1 Γ 10/6; 2" 14/-. Modelectric Minimod receiver Cherokee, Taurus II. More to (callers only please!) Ditto standard. 1 i* 7/9; 1*" 9/6; "308" Glowfuel. 25% Castrol "M " £8.17.6 come, per pair £6.10.0. 1 i" 10/6; 2" 11/-; 2*'14/-; 2*'15/-; Modelectric trans. transmitter per gall. 22/6 2* " 16/6. BATTERY BOXES Methanol per gall. 12/6 £11.9.0 Dubro 2PC (new type) 6/6 Veco spinner adaptor nut 2/6 “ 308" all trans RX (recommended) Castrol “ M" per quart 9/6 Veco spinner extension shaft 7/9 Oubro 4PC (new type) 11/- KK Nitrex 15 per gallon 37/6 £ 6.10.0 Dubro 6PC (new type) 15/- Hillcrest Nylon universal fitting O.S. Pixie all Trans, relay RX. Mercury No. 8 diesel per gal. 35/- 2 ' 7/6; 21" 8/9. Williams nylon Hillcrest 2PC nylon 4/6 A ll Mercury and KK fuels stocked complete £16.10.0 Perfect(Alum.)2PC, 3PC.4PC 4/9 universal screw fitting: 1*" 7/9; Futaba Transmitter FT-5A 12V in *pts and pints. 1 i" 8/9; 2" 11/9; 2 Γ 17/9. BELLCRANKS, HORNS, Nitromethane per 500 grammes super-range £18.13.0 etc. A ll KK plastic spinners always in F4-LR relayless super-regen RX 351- stock. F.R. nylon Control horn 1/9 Amyl Nitrate2ozs 6/8; 4ozs 13/4 3V £7.17.0 Topflite nylon Control horn 2/6 Nitrobenzene 4ozs 2/6 TIMERS F3-TR relay super-regen RX 9V KSK engine cut off 35/- £ 8.2.6 Topflite aileron bellcranks 7/6 GLOWPLUGS and Glow- Topflite 120° aileron crank 6/- KSK D/T 5-minute 35/- Wiring harness for F4-LR 18/6 plu g C lip s Tatone i A shut-off 39/6 Midwest horn and crank set 61- F6-STR superhet RX 9V with Veco C/L bellcrank largo 4/6 Fireball, hot, standard and cold 5/3 Tatone engine shut-off 39/6 relay £12.15.0 Veco C/L bellcrank small 3/6 K&B1L2V 5/3 Tatone engine flood-off 39/6 FT-5C matching TX 12V £15.10.0 Merco 2V short reach and long Tatone D/T 39/6 Veco elev horn (wire) large 4/3 R/C SERVOS AND Veco elev horn (wire) small 3/9 reach 4/3 SWITCHES, WIRE AND Veco elev horn external 3/3 K & B Idle bar 9/6 CONNECTORS ESCAPEMENTS Roberts 3-line bellcrank unit 30/6 Merco idle bar 6/6 Bonner slide D.P.D.T. Good We have comprehensive stocks Glowplug protector holds 8 plugs contacts 9/6 of servos and escapements by COCKPITS, COWLS, 2/6 Bonner, Babcock, MK, O.S. Futa­ SPATS, etc. N.K. sub-min. toggle switch A ll Cox glow-heads always In (recommended) S.P.D.T. 14/11; ba, Elmic, Rising and Schulz, Goldberg Sen. Falcon 10Γ 7/6 stock. Climax, Ripmax, etc. Williams moulded canopy 10' 9/6 D.P.D.T. 19/11 Dubro large glowcllp for 15-61 Lightweight slide switch D.P.D.T. PILOTS Williams headrest canopy 5* 7/6 motors 3/11 Sterling Spitfire canopy sot 4/- Mercury “ *Α " and “ A " hand- 15/- Dubro small glowcllp for 049-09 painted 3/9 Sterling Mustang canopy 12/6 ORBIT hook-up wire. 12 colours motors 3/11 pkt 4/6 Williams civil and military CONTROL-LINE Cox glowclip with lead 4/6 MK plugs and sockets 6 + 8 patterns. 1" 5/9; H * 7/9; 2" 8/9. H A N D L E S KK glowclip with lead 4/6 (recommended) pkt. 12/6 Williams 2)" pylon racing pilot U-Reely with 100ft lines 89/6 HINGES AND HINGE R C EQUIPMENT 1/- Roberts three-line C/L handle 69/6 MATERIAL PROPORTIONAL KK Plastic 1/9 & 3/6 Bonner Polypropolene hinges RADIO CONTROL KITS KRAFT KP6 complete with 4 Jetco Citation 62". 49-61. 260/-; COUPLINGS and pkt - 8 10/- servos. Without question the C LE V IS E S Williams nylon hinges, smll pkt-4 DeBolt P-Shooter 57". 29-49 210/-; most reliable outfit obtainable Lil Tri Squire 40", 049-099 59/6; Dubro Kwiklink KL49 4/9 3/11 today for full-house competition Dubro Kwiklink 12' long rod 4/9 Williams nylon hinges. Ige pkt -4 Cessna 180 45". 09-15 87/6; Amco flying. We shall be pleased to H.Ray 50", 09-15 1 30/-; Amco S- Dubro Dual take-off DT4 4/9 4/11 qu ote for your requirements. Dubro Duraconnectors and “ 308" mylar strip for hinges 2/6 Ray 50", 07-10 112/6; Beachcom­ FLIGHT-LINK. The reliable ber 64", 49-61 270/-; Midwest V-link 9/6 NYLON and SILK British equipment for the sport Dubro Kwik-Keepers pr. 2/6 Esquire. 50", 15-19 116/6; Gt. American lightweight nylon, and scale flier. Now available in Lakes Bipe 57*' 49-61 505/-; Dubro Linkage Arms 4/9 white, red, yellow and blue, 36" x four combinations:— Dubro Trim-bars TB2 19/6 Sterling Mustang, Spitfire and 45" per pkt. 9/6 2 + 1, 3-servo Super-regen King Cobra scale, 49-61 all 311/-; Dubro Kwik-link sleeves pkt 4 2/- “ 308" nylon, white, yellow, orange system £89 Williams nylon clevis 9' pr. 9/11 Falcon 56", 15-19 117/-; KK Super sq. yd. 7/- 3 + 1, 4-servo Super Regon 60, 29-49 120/-; KK Gyron 36*. R/C Craft nylon clovis 10' 2/6 American packed Jap silk, white, system £107 “ 308” nylon clevis 12' pr. 3/9 049’s 69/8; Veron Skylane 54', yellow, orange, red, purple and 2 + 1, 3-servo superhet system 19-29 112/6; Veron Robot, 45', DOPE AND POLYURE­ black, pkt. sq. yd. 9/6 £109 09-19 89/8. THANE FINISHES PROPELLERS 3 + 1, 4-servo superhet system Cellon Butyrate fuel-proof clear Tornado nylon:—7 x 6, 7 x 8 4/-; £127 CONTROL-LINE KITS dope jpt 6/6, 1 gall. 45/-. 8 x 6. 8 x 8 6/-; 9 x 6. 10 x 6 8/6 ; Flight Link handbook giving full Jetco Shark 45, 45-61 189/6 Titanine, 217, Cellon, clear *pt 4/9 11 x 6 9/3; 12x612/6. technical details 2/6 post free. Veco Smoothie, 29-35 85/6 International Polyurethane 2-part Tornado nylon pusher 8 x 6 8 /6 ; MULTI-CHANNEL Veco Thunderbird, 35’s 112/6 clear 1 pt 16/3 9 x 6 10/-; Tornado 3-blade* 8 x 6 F A M Matador-Midas 10Ch Veco Hurricane, 35’s 117/6 International Polyurethane 2-part 11/6; 9 x 6 & 10 x 6 13/9. Rev-up complete £87.10.0 Goldberg VooDoo, 19-35 36/3 colours 1 pt 19/3 wood. America’s best prop today, Raven'.R V6,6Ch superhet £61.10.0 Veco Little T^Bird 19-25 68/3 H.M.G. fuel proofer 2oz 2/6 (recommended) 7 x 8: 7 x 9; Raven’ RV7, 6Ch bi-simul super­ Sterling Spitfire, 29-35 99/6 Titanine fuel proofer 2oz 2/6 7 x 10 6/-. 11 x 7; 11 x7*; 11 x 6 5/-. het £66.15.0 Sterling Stearman Bipe 19-35 93/-

THE MODERN MODEL SHOP 308 HOLLOWAY RD. LONDON N7. HENRY J. NICHOLES 8 SON LTD. TELEPHONE: NORth 4272

KINDLY MENTION “ AEROMODELLER” WHEN REPLYING TO ADVERTISEMENTS Aero Modeller 374 Heard at the HANGAR DOORS

Not very often are we able to show a photograph of a full size aircraft and its miniature counterpart, both of which are flown by the same keen aviator—none other than Jack Morton who has demon­ strated his other radio controlled Tiger Moth model so often at rallies. Jack recently went solo in ’LNA, and has the full mastery of the model·. Second view of the model in action is at the Wycombe Airpark rally May 21st where hundreds of professional flying personnel were enthralled at the aerobatic display by this and other models. Note that kinky aileron for out of wind take-off.

INVITATIONS to compete in Continental contests for free flight have been extended to all S.M.A.E. members. As each has a particular attraction, both as an classes plus A 1 glider. Chuck Zdenek Flieger (how appropriate) opportunity for meeting many Glider, the novel and challenging Vitezneho Unora 10, Prostejov, Eurojpcan notables as well as A /2 power event, Flying wing and Czechoslovakia. combining with a holiday, the Coupe d’Hiver take place near LOOKING FORWARD to 1967 the general details arc worth Heidelberg. Sounds like a and the World Champs for R/C noting. First is the 12th European marathon! Enquiries to W. multi scheduled for the airfield at Criterium for Free Flight Power. Muller, 6909 Walldorf. Lilien- Ajaccio in Corsica, we have been 1967 rules will apply - meaning thalstr. 8. W. Germany, will lucky to contact a tour organiser the use of standard fuel, and most bring further info, l or the others, of national repute who can offer European Nations arc cxjpected contact our office and we’ll for­ reduced rate terms for a two- to be represented. Held from July ward details. week (15 days—14 nights) holiday 30th to August 2nd at the scenic SCALE ENTHUSIASTS who at Ajaccio around the contest lakeside airfield of Lescc Bled in were attracted by the announce­ period of June 21st/26th. Travel Northern Yugoslavia, this event ment of the DUTCH international would be by regular airline, not has its own special attractions. in our April issue are similarly charter, and the inclusive figure Next, on the weekend of August asked to apply to us for more for the period would be in the 14th/15th, the French organisation info. At time of going to press, region of £70 per person. This is is running the “Pierre Trebod” the airfield had not been secured a saving of up to £10 on regular International for F.A.I. classes in so a location cannot be announced travel plus normal hotel charges, Rubber, Glider and Power at for the September 17th/18th event. etc., for the same period. Those Peronnc in Northern France. STAY AT HOME international­ interested are invited to submit Slightly nearer to London than is ists who like postal contests will names for inclusion in the list of Manchester, this one offers a be interested in the Czechoslovak­ “probables” for the organised chance for quick cross-channel ian organised autumn events for tour. weekenders. Then on September A/l and A/2 glider classes. This FLASH BACK to our cover for 11th the 13th Walldorf Inter­ is open to all comers, and further May issue which you’ll recall national for all F.A.I. Free Flight details can be obtained through featured the red and white D.H. Aero Modeller 376 STRICTLY SIMPLE

David Boddington tests a new kit for the single-channel radio control flier —the KeilKraft ‘Gyron

In April issue, our contributor specia­ from the sheet readily don’t be tempted to ‘break’ them list on single channel RjC expressed out as it takes much longer to clean up all the edges than surprise that no British Mtuiufaclurer by cutting. had produced an all-sheet balsa design Construction proved to be quick, simple and straight­ for simple radio control. KeilKraft forward and should provide no difficulties to the raw almost immediately released the GYRON beginner; the wings are made very easy to assemble by in prompt response! This happy coinci­ the printed positions of wing ribs and gluing the leading dence enabled David Boddington to and trailing edges direct to the bottom sheet. I used thoroughly assess construction and flight P.V.A. glue extensively in building the ‘Gyron’ as this type tests of the kit as well as the new Raven of adhesive is more suitable for doublers, block balsa, ply S/C radio. to balsa parts etc. The main criticism of the construction relates to the wing seating on the fuselage. Neither of the TYECF.NTLY introduced into the KeilKraft Radio fuselage formers at the front and rear of the cabin area AY Control stable is the ‘Gyron’ designed by Dave are “Vee’d” to take the wing dihedral. The remedy for Platt. This 36 in. span model for single channel radio this is to (a) Cut formers F3 and F7 with a dihedral Vee or features all sheet construction and is suitable for the (b) to add i in. x -fV in. balsa rails to the top of the popular .049 cu.ins. range of engines. It is reminiscent of fuselage to allow for the wing projection. The instruc­ American designs in particular with regard to the wing tions also state that with one wing panel flat the other lip and tailplane incidences, the latter at a high positive angle should be propped up H in., this should read 3 in. i.e. to allow the engine to be installed without downthrust. 1 i in. under each tip. Fitting the engine and escapement is Beauty, it is said, is in the eye of the beholder and I must admit that to me this design does not rate as a raving Plan view of fuselage shows slight right offset for the Frog 80 beauty. It has, however, a certain functional appeal. diesel engine, the Elmic Conquest escapement on the bulkhead Due to the amount of prefabrication in the kit a con­ and Raven Rx in sorbo packing at front of capacious R/C ventional full-size plan is not necessary and the sketches compartment. and instructions included are both adequate and explicit. Contents arc comprehensive including preformed U/C gear, wheels, fuel tank, hardware, three colours of tissue, transfers etc. All the balsa was selected mainly of medium grade and no parts required substitution, unfortunately although the diecutting was accurate it did not fully penetrate the sheet and required further cutting with a sharp knife. The same applied to the plywood die cut parts and these were more difficult to release using a modelling knife, the plywood also tended to be on the brittle side breaking away at the edges where parallel to the grain. I understand that the diecutting on later kits has been improved but if you do get parts that do not free 377 July, 1966

Left, the test model, an excellent 69/8d. worth. Note low set tail- plane, trike U/C and use of all-sheet covering.

Right, the tail end shows tapered rudder operated by torque bar and tail- plane with fairing attached under­ neath.

eventually unwound and on the glide, left rudder stuck on resulting in a “graveyard” spiral. It says much for the strength of the model that practically no damage was incurred, and little for my diligence in checking the w inds on the escapement rubber. On consequent flights, with a small adjustment to rudder and a shim off the tailplane packing, the trim was correct (in calm weather) for both power and glide, although a reduction in packing would i be required in windier weather to increase “penetration”. The ‘Gyron’ is not overpowered with a Frog 80 as it has suggested at an early stage of the fuselage construction quite a high flying speed and its flight characteristics and although it is recommended that these arc well pro­ deteriorate at slower speeds; a hot .049 cu.ins. engine tected it is preferable to be able to fix these after the com­ would appear to be ideal for it. Rudder control is very pletion of the model. This can be arranged by Aralditing positive and if held on for a 90° turn or more, the nose or soldering the engine mounting nuts to a thin metal drops rapidly; indeed if held on to the right a spiral dive plate glued to the rear of the front bulkhead, this will also will result and recovering from this can only be effected by allow adjustment to side thrust on radial engines. The application of opposite rudder; centralising the rudder is escapement former can be fitted into the fuselage by slide not effective. This no doubt is due to a combination of the rails although there is just sufficient room to screw the incidence angles of the wings (5a positive) and tailplane escapement in position on the fixed former after com­ (5J ° positive) and the engine sidethrust. pletion providing a small screwdriver is used. Incidentally The review model incorporated approximately l|° right why is an Llmic Compact shown on the drawing? No side thrust and it is suggested that this should not be provision is made for engaging a secondary control and exceeded except for the most powerful engines. Left it would be also difficult to fit a 'kick up’ elevator. turns can be maintained without losing height, providing The completed model uncovered, and less radio gear, the rudder is not held on throughout the turn. On the weighed 15 ozs. including the engine. Final weight with glide rudder is less effective, but at all times adequate. radio installed came out at 22 ozs., compared with the Although the spiral diving characteristics are not ideal 20 ozs. quote in the instructions. for a beginners model, it allows the more proficient flyer to engage in some lively aerobatics, and from a $ turn in Flight Tests cither direction, the ‘Gyron’ will execute very snappy barrel rolls. True loops were not achieved with the With a Frog 80 installed, together with a Raven S/C review model, but with a little more power, these should receiver, a Conquest escapement and battery box con­ be quite possible. taining three No. U7 1.5 volt batteries, the balance of the Summarising: the ‘Gyron’ is a rugged model capable of model came out as shown on the drawing. After checking taking most of the hard knocks which, in the hands of the the operation of the radio, test glides were undertaken and inexperienced, it is likely to get. As a beginners model it is indicated that the Oyron* was slightly under elevated, not in the same class as its companions the “Super but with no noticable turn. The first pow-er flight con­ Sixty” and the “ Mini-Super” for it docs not possess the firmed that there was slight under elevation but also a same inherent stability and forgiving characteristics. For fairly sharp turn to the right resulting in a dive to the the more ambitious S/C flyer, it should give some sporting right. A piece of iV in. packing was inserted over the flying suitable for most weather conditions; this lype of leading edge of the tailplanc and a “tweak” of left rudder flyer may wish to fit a larger fuel tank to give longer applied. flights. Following the next launch (which needs to be fairly The only modifications suggested to the construction, fast) the model climbed steadily, but again to the right, other than mentioned, are reinforcing the wing trailing requiring constant pulsing to the left to prevent the nose edge to prevent the rubber bands cutting into it. and dropping into a right hand spiral. So much left rudder reinforcing the fuselage at the position of the front tail­ pulsing was necessary that the escapement rubber planc dowel where a split occurred in the sheet side. Aeromodeller 378

Readers’ Letters THE and the engine covering, plates, plus nice 'round' figure of 6 inches for a wheel covers being black, the remainder model. One of the attractions for this of the aircraft colouring was the normal size model was that the bits and pieces RNAS dark khaki colour with a greenish fitted nicely into my carpenter's apron tinge". pocket and I could, when the foroman JOURNAL Weybridge. Colin Pengelly was not looking, easily fish them out and do a little 'homework'! We reproduce a One drawing by R. Bradford Thus, so far as I was concerned, the on Autumn edition of Canadian Aviation 1/6in. to a foot scale was born as It was Historical Journal, at left. still large enough for smaller machines, such as the ''Camel” , and yot did not Magnet Steering rule out the “ Vimy", but I was glad that I never received an order for a H.P. Dear Sir, V/1500 at this scale. Reading your article on magnet It Is said that there Is nothing new steered gliders in tho December Aero- under the Sun and so this letter, if modeller and finding how to obtain the published, will probably result in a flood Graupner magnet, I was oncouraged to of claims from folk who were building take up a model started and abandoned ‘seventy-seconds’ before 1917 b it. so two years ago. I got the information for far as my memory serves me. most of the the steering unit from a 1955 Aero­ models of tho first World war period modeller hence the original Grommer fin, were all about έ or i inch to the loot rudder and wire turbulator. scale. I think this is the most onjoyable form After the 1914-18 war, jobs in the of model flying I have experienced be­ aircraft world were hard to come by and I cause such long duration can bo achieved ‘graduated’ as a clerk into a solicitors without the model covering large dis­ office in Savile Row, just a step from the tances when wind conditions aro favour­ modellers “ Mecca” of those days. Sopwith Triplane able. Unfortunately, risking a non- This was Parsons “ War Seal" exhibition dethermalised flight in very low wind, I showrooms at 315-7 Oxford Street. I Dear Sir, lost the model, which was found 2 weeks wonder how many of your readers will I remember that some years ago, there later, hopelessly waterlogged, about H remember this? I entered a number of was some controversy amongst scale miles from the launching site. their competitions and at one of their modellers as to what was the right colour As a matter of interest the model used to paint models of Collishaw’s Sopwith Prize givings, held on 10th July, 1919, a 6in. x 78in. wing with B6456f section and presented both Alcock and Brown with Triplane. The following extract from a a 21 in. x3|in. tail using a modified B6356b models of the “ Vimy" (1/72nd scale, of letter which I have received from A ir Vice section. Fuselage moments were approxi­ course). Marshall Collishaw may be of interest mately the same as shown in the Decem­ Our models of that period were of to your readers, and you might care to ber '65 Aeromodeller. With 80% C.G. and print it in a forthcoming edition. soft white wood as Balsa had yet to be a weight of 15 ozs the layout worked very 'invented'. The last models I made were “ In respect to the so-called Black well. also of this material, being of match- Flight in No. 10 Naval Squadron in the I am now building another model of sticks and entered in the 1946 Model Summer of 1917—at the outset the threo more or less the same design except that Engineers Exhibition. The scale for these Flights, A, B and C were respectively it will use a Mamo steering unit, easily coloured red, black and blue on the noso was 1/120, or 1/10th of an inch to the foot obtained in Germany and the higher and if anyone prides himself (or herself) spinners and wheel covers for the aspect fin and rudder. I shall also build in purpose of helping aircraft crews to on their skill as a modeller, have a go at a a good D/T with £3 worth of magnet in the Fokker ‘•'Tripe". A t this small scale the identify aircraft when they landed, nose! because at that time, the very light models look quite attractive if left in the B.F.P.0.36. Germany. Μ. H. Clifford. 'nude' with just the essential markings. Sopwith Triplancs had to be held by the (Photo, bottom left) wing tips both going out and after Burgh Heath, Surrey. P. T. Capon landing to procood to the hangars. It Scale origins was found that the small black coloured Classifieds features were insufficiently conspicuous Dear Sir, and so the fuselage and engine covering To lay claim for the originality of the Dear Sir, plates were also doped black. A t that “ International scale of 1/72nd” is, I Thank you for printing my advertise­ time the aircraft crews began to call it the think, akin to claiming that one invented ment in the April '66 issue of “ Aero­ •Black Flight·—following this idea I the Foot rule. However, I fool that I must modeller"; the response has been much arranged for all the aeroplanes in *B' get my twopennys-worth in on this. As greater than I expected. flight to bo provided with names in which you will note from the enclosed cutting I do wish, howover, that people would the word Black was a dominant feature from "Flight", dated 4th March 1920, I be just a little more careful over their e.g. 'Black Maria’ ‘Black Prince' etc. was making, and advertising for sale, replies to advertisers. When ‘B’ flight made a name for itself, models to this scale, over 46 years ago. So far, out of 73 replies, I have had to Pross Correspondents introduced the Actually, as a lad working in a north pay six lots of excess postage duo to name of the 'Black Flight' to the public London factory on Avro 504 wings, I was people using insufficient stamps. I have and it was consequently perpetuated. making and selling to my work-mates, also had olevon lettors Incorrectly ad­ Exclusive of the forepart of the fuselage 1/72nd models of the 504 in 1917 but. alas, dressed, two unsigned, three with no I cannot produce evidence of this. return address, and one that was simply Anyway, why 1/72nd scale? Person­ illegible! ally, I think It came about because the London, S.W.19. R. J. Shallcross. few modellers then around making 'solids' depended for their G.A. drawings on “ Flight" and although these were not Rally dates of a uniformal scale for all machines Dear Sir, published, they were about right for on It was a great disappointment to me average slzo two-seater aircraft. When I and many other contest fliers last year, decided to make my first 504 model I that so many rally dates clashed due to found that the 36 foot span of the full- the lack of liaison between organizing size aircraft gave, at 1/72nd scale, the bodies. 379 July 1966

At the end of last season your maga­ Glue tips zine stated that, for ’66, it would act as a "clearing house" for contests and venue Dear Sir, announcements. Up to this time it has Working for a synthetic resin manu­ done this very well and I am sure it will facturer who makes epoxides and PVA continue. among other glues, I would like to add However, the South of England Gala two comments to your article on ad­ and the North Western area Rally clash hesives in the May issue. on April 10/11th, for which no one holds Epoxides. I think it is misleading to your system responsible, was by no way suggest that an epoxy bond to metal is as an accident. All modellers who have strong as the metal itself. When a metal attended will agree with me that the to metal epoxy bond Is tested to des­ intolerable car parking arrangements, truction. The glue line, or its adhesion to coupled with an RAF restriction which the metal, always falls, not the metal upon investigation was found to be non­ surface Itself. existent, at the Torn Hill contests In the In bonding metal with epoxy, two past few years, has left a wound on all points should be borne in mind: Firstly those who usually enjoy a weekend of bond strongth in tension and shear is competitive flying. good but feel strength Is poor: Secondly It Is for this reason that the London in addition to ensuring freedom from Area organised the southern contest to grease (wipe with solvent o.g. dope, correspond with it. I am suro that all thinners and allow to dry). The bond is south England and a good few mldlan- greatly improved by roughening the dors would rather come to a 'park where surface to bo joined. you fly' contest than to battle it out P .V.A. I have found P.V.A. watered against the elemonts and harsh organi­ down to a thin brushable consistency sation with nothing for protection but a is excellent for sticking tissuo. It com­ rusty hangar wall. bines tho noatnoss of dope with the ease It should be mentioned that I do not of application of dextrin paste with its speak In an official capacity. longer working time. It is also strong Thunderbolts Brockley, London. Dave Hipperson. enough to hold tissue firmly In contact with undorcambered ribs. Dear Sir, Rochdale, Lancs. M. C. Reeves. Mr. Capewclls of (Neston Cheshire) wrote a letter on P-47 Thundorbolts Image barrier t Validity which was vory interesting and I think I can give him the answor to the unknown Dear Sir, Dear Sir, Squadron. Looking through my father's With regard to the use of silencers I and my competition minded club- photographs taken when In the R.A.F. there can be no doubt about their use mates have noticed and probably many (Far East) I found the enclosed photo­ where the public image of the model others too. that when we enter a com­ graphs of somo P-47’s the squadron flying movemont is in jeopardy. Every petition which is not run by the Society being 258, stationed at one period at concession to good public relations is a (SMAE Ltd) we aro quite often not asked RAMREE(Burma) 1944 the markings were step In the right direction. Are we, to prove that we are insured. chequered engine cowlings and em­ I wonder, deluding ourselves into think­ In the last eight competitions I have blems also on somo cowlings, paintings ing that once wo have overcome the noise ontered I have only once been asked of an English Rose & Desperate Dan problem everything In the garden (or about insurance. This was not very well astride a bomb, and many pilots'personal rather the flying field) will be lovely. done either, as my other clubmates and gimmicks. I enclose photos of P-47 I am prompted to say this in view of the myself were only asked to give our showing 258 squadron marking ZT-D. following facts. Society numbers. Surely this is not the Colours are green and earth, with light There are many other groups of noise way a competition should be run? blue^underneath. producing weekend sportsmen other I would like to suggest that when a Leicester. Stephen Searle than aeromodellers. To name Just a competition is organised, the organisers (aged 12) few: Motor cycle grass track enthusiasts, should ask to see every competitor's go-karters. scramblers, and dragster membership card and also see that It is Two of Master Searle’s father’s photos are fanatics. A ll of whom can make more valid for that competition. If his card Is reproduced here, a photo of ZT-D shows noise than a whole field full of aero­ not valid he should be disqualified unless small letters in line with the small roundel modellers. he can produce some proof that he is which in turn is in line with the intercooler Apart from the go-kart enthusiasts I otherwise Insured. vent (i.e. lower than WK-L on inside don’t believe any of the abovo havo made I would also like to see the organisers back cover.) any attempts to cut down the noise they check that a model is properly silenced produce. There are casos in many by a reasonably effective silencer. I parts of the country where the use of know some do but an awful lot don't. an airfield is granted for motor cycle Spenny Moor, Co. Durham. racing or dragster racing and is for­ K. Unsley, bidden to aeromodellers. This fact Sec. Spennymoor M A C. indicates that we do not hold as good a public Image as other sports, and are A matter of trim not taken seriously by the powers that be. Dear Sir, Tho decision of the S.M.A.E. with About 2 years ago I bought a Wen- regard to the use of silencers is I think a Mac A-24 Attack Bomber, I flew It but it wiso ono, but many other facts of public was not a stable flyer, and, after a few relations will have to bo explored before unsuccessful flights I took it home and it wo can compete for the use of facilities was left in a corner for 2 years. About a on the same level as other organisations. week ago I hadn’t anything to do so I I don’t profess to know the answor to took the A-24 out and flew it again and I this problem but I feel there must be realised what the trouble was, the ele­ some way of breaking the image barrier. vator is hinged in the middle and any air Perhaps with a little patience and current hitting the elevator would either willingness to see both the point of keep it up or down, and thero Is no view of the public and also of ourselves medium between the two. we may overcome the problem—some So I cut the front of the elevator off, the day. result—a very stable flier. Rochester. Karl M . Webster. Sherbourne, Dorset. S. T. Purcell. T O P I C A L T I V I S T S

by ‘Pylonius’ illustrated by ‘Sherry’

Pile-in Racers Rather like those gentlemanly University scientists who tinkered with the atom splitting experiments under the dreaming spires, and landed us with the H Bomb, so those pioneer hobbyists who heaved their six skeined rubber machines into the safe and soundless air over Bon V iveu r Wimbledon Common could not have suspected that FEW words apropos to cannibalism, inspired appro­ their friendly old machines were the precursors of that A priately enough by a plasticator who wrote to the Air ultimate flying field horror, the Pylon Racer. Britain Digest. But before you get any gory ideas about Now, I admit the only pylon racing I have indulged in feasting out of tins of real Chappie, let me point out that is to get in a few flights on the local common before the the cannibalism, or rather cannibal isation, refers to the Electricity Board moved in, but I do admire those very unchcwable contents of plastic kits, and the ran­ intrepid modellers who can. face up to these unmanning sacking of same for those choice bits and pieces that missiles without turning a hair. It takes pints of courage. will build your basic two bob outlay into a coveted Come to think of it, the tensed up follicle, cringing on the ‘special’. twitching scalp, can possibly do a smarter job of turning A harmless enough pursuit, but one which can quickly than the way out Racer, which just goes to show that we get out of hand and become a feverish addiction, with still have a lot to learn about the art of course racing. the advanced re-crcato-r mating up all sorts of improbable One aspect of the sport which is well up to the mark, oddments. He may start off, innocently enough, boggling however, concerns that Bond which unites the cult the unsuspecting eye with a Messerschmitt 110 empen­ crazed masses. It’s bad enough people thinking that the nage grafted onto a Mark I Spitfire, but as the mania Quantum Theory has something to do with the short takes hold he casts a deviationist eye towards the plastic skirt craze, but to imagine that nothing is complete ‘Monster’ shelf. Yippee, he says, as the full significance or fulfilled without the introduction of those mythical of a Frankenstein Bomber/Fighter begins to formulate numbers, ‘007’ is going too far. In a recent Pylon event, in his plasticatcd pre-conscious. Or what about a Henry wc arc told, the racing numbers were given a two zero Mark VIII? And a Dracula Jet opens up all sorts of prefix in order to give one of the in-types a coveted Bond exciting possibilities, with a re-heat blood transfuser and identity. It’s enough to make you cry ‘Uncle’. inverted landing gear. In quieter vein he could bring about some marvellous Uncultivated Types transformations with Santa Marias and Cutty Sarks In case you think that vandals spend all their time coming to terms with old Farmans and Bleriot Mono­ wrecking telephone kiosks, I am asked to remind you that planes. Fortunately, before he gets to the plastic Adam the tribal versatility knows no bounds, not even the shelf to ponder the airworthy scope offered by the assort­ distant farmland fences, where the infiltrators, heavily ment of human innards, he is flat broke. disguised as model flyers, strike deep into the cabbagey Well, that's how the chap who wrote the letter to Air heart of the countryside. Britain tells us he finished up, although it would seem that Not unnaturally, this complaint of a fifth column in his experience has given him a missionary urge. There our midst comes from a farming type, himself a model arc constant references in his letter to such Congo sound­ flyer. Apparently, he sneaks out for a quick flip or two ing places as Gloomsvillc and Crisisville. Let us hope, between raids, picking his way carefully through the though, that the cannibals don’t catch up with him and squashod turnips, mashed potatoes and suspiring make him a ‘Kookie’. livestock, contemplating the while the possibility of erecting a few diversionary kiosks along the hedgerows. Everything Under Control But, seriously, this business of model flying hooligans You could say that, now a free flight model has been is something that the movement can do very little about. controlled by Radio, we have lost the last freedom. But Before you could possibly identify and discipline the not to worry, the only reason a free flight model is called miscreants they have gone to fresh pastures in other such is to distinguish it from the various types of acrobatic guises, and their next appearance on the delinquent scene specimens which thresh about the sky, cither on a loop of might be as gun toting sportsmen or ten course picnickers. wire or the live end of a radio pulse. No doubt, though, we have in our midst crop bashers of As a matter of fact, the idea of a Wakefield or glider veteran experience, who have, in a long and extinguishing doing its stuff within the confines of the airfield has a career, devastated huge tracts of life-giving fodder, strong appeal to those lacking the vigour and agility to broken countless fences and fed many a hapless ruminant negotiate that assault course known as the English a fatal dose of polythene wrapping. But, fortunately, such countryside. One chastening thought, though. If we do beings arc rare, or so wc like to think; usually, the manage, by the magic of electronics, to contain ourselves farmer's enemy is a one-season man, who takes up the in the airfield environs, what a waste of all these stra­ healthy sport of model flying as a means of recuperating tegically concealed ditches and defensive barriers of from long spells of wrecking duty in cramped and barbed wire. stuffy kiosks. 381 July 1966

Peter Chinn's Latest Engine News At left, Merco .61 R/C Mk 2 details, honed bronze bushes are now fitted to both ends of connecting-rod, and right the twin standard plug head that replaces the shielded single plug head. Merco Mark Two The piston is also now fitted with bronze bushes in the gudgeon-pin bosses to reduce wear. A slightly smaller HE number of new or improved engines that have diameter gudgeon-pin has been adopted to enable the T been announced lately has been quite large; more, bushes to be accommodated in the piston and the pin now in fact, than we can hope to cover adequately in the has bronze end pads. "Latest Engine News” scries. A sizeable proportion of Externally, the most obvious change is the adoption of these engines, however, are R/C units and, in order to a new cylinder head having twin glow plugs. It is necessary make room for those motors of greater interest to our to energise only one plug to start the engine, of course, free-flight and control-line modeller readership, detailed and the plugs used arc standard type since it w'as found descriptions of R/C engines—particularly the specialised that, with the twin plug head, no advantage was gained by “multi” type power-plants—are being switched to our using idle-bar or shielded types. companion journal, "Radio Control Models & Elec­ The Mark 2 has been under development for the past tronics eighteen months or so, during which time Dennis Allen However, particularly in view of the fact that, nowa­ and production man Ron Ward have made innumerable days, new British engines appear somewhat less fre­ flight tests. Experimental engines were also used by the quently than new' imported ones, we are starting this entire British team at the 1965 World R/C Champion­ month’s L.E.N. with a brief description—pending a full ships. The power of the Mark 2 is said to be slightly in­ report when a test engine becomes available of the creased, but the major advantage of the new model is in Merco 61 R/C Mark 2. its improved idling reliability and greater tolerance to When the Merco 49 R/C appeared a little over four variations in the tank position. years ago, it rapidly became accepted as the Number One R/C multi engine in the U.K. and also enjoyed a quite Moki S-3 considerable reputation overseas. The same can be said for the 61 model that became available in 1963-64 and w'e In International 2.5 c.c. C/L speed events during the have no doubt that the new Mark 2 will continue to up­ past few' years, four makes of engines have headed the hold British prestige, despite w'hat may prove to be strong results and the Hungarian Moki has had its fair share of opposition from new foreign products. places. These started with first and second in the 1958 The Merco's most impressive successes have actually Criterium (Moki S-I) and went on to include 1st and 3rd been in American hands, namely Ralph Brooke’s 1965 in the 1962 World Championships (S-3) and 1st and 2nd World Championship win and Maynard Hill’s world at last year’s Criterium (S-3 again). records in the duration and distance categories. Some of (Continued on page 400) the modifications made to the latest Merco have, in fact, Parts of the Moki S-3 compared with those of the K&B 15R resulted from suggestions from modellers in the U.S.A., and Super-Tigrc G.20/1S. From top left photo, clockwise, the including Maynard Hill, who contributed the idea of shaft assembly, main casting and rotary-valve assembly are shown with those of the K&B 1SR Series 64. In the final photo, the using bronze bushes, with oilways, in both ends of the Moki piston and cylinder parts are compared with those of the connecting-rod. G.20/1S. Moki parts arc on the left in each photo. Aero Modeller 382 OPUS

Designed by P. J. Champion

i Sports free flight delta for 1-1 5c.c. engines

Full size copies of this 1th scale /CONSTRUCTED as number four in a scries of free reproduction are v“4 flight della style sport models Opus was made during available through Aeromodellcr Plans 1964. Previous models showed a single dorsal fin to be Service, Plan U910. satisfactory under power, but ineffective during the glide Price 8/6 plus 6d. —the model gliding away at high speed in whatever post. Border scale direction it happened to be heading at the time the engine represents 1 inch. stopped!

W tO M W UU* PLANS U«.i>Ct

- -7*· — . .. · -J 383 July, 1966

To cure this situation, Opus was given a long ventral upper fuselage and sheet spine to wing, then add bandage fin to overcome the power-to-glide transition problem. elevator hinges on trailing edge, and cover upper wing Although it was thought the ventral fin would be rather surface with ·&■ in. sheet diagonally as shown, leaving vulnerable in this position it has withstood some very areas for undercarriage mounting pods. Add wing fences hard landings and achieved its objective in giving direc­ then remove structure from plan. tional stability, even if it makes the model resemble a Bend 12 s.w.g. piano wire undercarriage legs to shape, paper dart in the air. then bind and cement to plywood plates in wing. Carve The centre of gravity can be varied over a large range and sandpaper lower block balsa fuselage to shape of movement with little effect on flight providing the making a cut-out for nose wheel plywood web, and pivo­ elevator is also trimmed to suit. The balance point shown ted nose wheel. Cut slot for ventral fin in the rear end, on the plan should give everyone satisfactory results, and and drill a hole through fuselage to take nose wheel piano different positions can be tried for experiment once flying wire pivot. Bend nose wheel leg to shape, making sure experience has been logged. the last in. is bent at a right angle and solder this i in. With an A.M.15, Opus may seem a little underpowered length to the outside of i in. length of brass tubing with to some enthusiasts, but due to its fast glide characteris­ a 12 s.w.g. inside diameter. Now slide the 12 s.w.g. piano tics it would seem unwise to increase the speed any more. wire axle through one side of the fuselage, slip the nose The original Opus terminated its lease of life in a high leg pivot tube over the pivot and then push the pivot right speed argument with a equally high tension electricity through, scaling the ends with Araldite, ensuring the nose cable, but in general its shape allows it to survive most leg moves smoothly fore and aft. Cement the nose leg collisions. gusset into lower fuselage and add elastic band retaining Commence construction by laying wing/fuselagc x 3 hook. Solder the second hook to the nose wheel leg near in. centre sheet over the plan cutting slots for fin, and to web base, placing elastic bands in position to hold leg cutting out for engine bearers. Then pin down £x$ in. firm. Now cement lower block balsa fuselage in place. wing edges, (not the elevator trailing edge). Note that one Lay the £x i in. ventral fin outside shape over the plan half of the plan only shows internal structure. Next fill and fill in i x | in. diagonal strips. Add £x} in. trim tab, in the i x i in. wing diagonals and the two i in. plywood hinging it with thin alloy strip (Later bent 10 degrees to undercarriage leg support plates, add i in. sheeting starboard). Remove ventral fin from plan and slot into forward of the plywood triangles then drill undercarriage wing, ensuring the fin is at a true right angle to the wing. mounting holes. Prepare engine bearers with engine bolt Now cover the lower wing surface w-ith iV in. sheet in holes and solder piano wire across both heads as shown a diagonally opposite direction to that of the top sheeting. in sketch, ready to add to the carved and sandpapered Cover main undercarriage mounting points with block upper fuselage (with cut-outs for spine and cockpit area). balsa pods, colour dope cockpit area, and cement canopy Add bearers. Cut iin.sheetspine makingsurethattheeleva- in place. tor seating angle is 7$ degrees as indicated on plan. Cement Construct the elevator over the plan, cover, dope then cement to trailing edge hinges and fuel proof. Cover ' remainder of model with tissue, dope all over and finally fuel proof. If a spinner is used as shown on the plan the f Ij screw on nose cap can be employed as a ballast com­ partment if needed, but be careful, as an out of balance 1 1}> weight of this nature can quickly ruin the bearing of a 11 \ small diesel engine. 1, ' The sight of Opus in the air is enough to turn any head— stand by for sightseers whenever you aviate this one because it will soon draw a crowd. AIRCRAFT DESCRIBED Num ber 152 HAWKER TYPHOON by G. R. DUVAL evolved around the new 2,000 h.p. Rolls-Royce Vulture and Napier Sabre aero-engines, currently under develop­ ment. Of the four machines, two were to be Vulture- powered as the Type R, and two fitted with the Sabre as the Type N. /'ΛΝ August 30th, 1938, the Hawker Aircraft Com- The Type Rs, named Tornado, first flew in the winter ^ pany received an order for four prototypes of an of 1939 but were abandoned due to difficulties with the interceptor fighter designed by the late (Sir) Sidney Camm Vulture engine. The first Type N, named Typhoon and as an eventual replacement for the Hurricane, and sub­ serialled P 5212, made its maiden flight on February 24th, mitted to fulfil A.M. Specification F. 18/37, which was 1940, piloted by Philip Lucas, who shortly afterwards the Typhoon cockpit

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9 P O M * PAUL*» WARNING (AMR I» CONTACtOi CLOCK :■ p it c h u v u 37 CAUtP.A B jT T C ti > 0 *λ £ A - ONLY) 15 iJ*T « C “ A*G C( Ρ Α Μ Ι ΙΛ3Α» IM NtifICAtiON 29 VIxniPE iSQMI KC ONLYJ Opposite, interesting close-up of factory test machine without centre section stripes. Note extended foot step, steel plate on wheel cover doors cannon recoil spring shrouds and all black spinner and extension of yellow leading edge to inner cannon. Right, 56 Sqdn a/c. another view of which is shown below. (Both photographs by “Aeroplane” )

received the George Medal for landing it from a test In November, 1942, the Wing moved South to Man­ flight with a structural failure in the fuselage. sion and Biggin Hill, and within a week, under the Other troubles came to light, notable among which was leadership of Sqdn. Ldr. (later Wg. Cmdr.) R. P. Bea- a tendency for the machine to catch fire on starting up. mont, No. 609 had caught and shot down four Fw 190s. Both these faults were to persist, with serious results. It should be mentioned at this point that similarity in P 5212 was eventually armed with six .303 in. Browning outline between the Typhoon and the Fw 190 was the machine guns in each wing, due to delay in the production reason for the black and white stripes adorning the of the proposed armament of four 20 mm. cannon, and a R.A.F. machines, some of which had white noses, the latter further brake on progress was applied in May, 1940, when noticeable during the Dieppe operation of 19th August, Typhoon priority was cancelled in favour of the vital 1942. The Dieppe action also brought home the fact that Hurricane programme. In October, 1940, priority was re­ at altitude the Typhoon became easy prey to the German instated, and the bulk of production placed in the hands fighters, a fact that soon caused the R.A.F. to concen­ of the Gloster Aircraft Company at Hucclccotc, Glos. trate the Typhoon Squadrons on the low level role, Although the second prototype, P 5216, flew on May 3rd, where, of all the aircraft employed by the Allied and 1941, the main weight of tests and trials fell upon P 5212, Axis Powers, it became supreme. More and more during which, although it attained spa:ds in excess of 400 Squadrons were formed, attacking enemy shipping and m.p.h. The Service pilots concerned formed grave doubts communications, and by the middle of 1943 as many as as to its potentialities as an interceptor fighter, the 150 locomotives were being destroyed each month. doubts being heightened by snags in the Chatellerault belt Initially pioneered by No. 609 Squadron, which had feed mechanism for the 20 mm. guns now fitted to both developed a private and piratical offensive against the machines, and by the low speed handling, which revealed Germans, the Typhoons began to carry bombs (the first a violent swing on takc-ofF and a high stalling speed. two were plastered with “Wings for Victory” stamps), Another feature was carbon monoxide penetrating the which progressed through 250-poundcrs and 500- cockpit, requiring oxygen to be breathed at all times, and pounders to the eventual load of two 1,000-pound bombs, contemporary handling notes state that . . men cannot but the most important addition to the machine’s breathe in the slipstream.”* For the moment, the armament came in 1943, when the Squadrons were Typhoon’s future hung in the balance, and then the withdrawn in rotation to be fitted with underwing rails Luftwaffe introduced the Fockc Wulf Fw 190, outclassing for eight 3 in. rockets, carried as an alternative to the all R.A.F. fighters and damaging public morale by fast bombs. Using these weapons, tremendous havoc was low-flying attacks on the South Coast. As a direct result, wrought on both land and sea targets, for a salvo of development of the Typhoon was accelerated, and Dux- rockets was similar in effect to the main armament of a ford was selected as a base for the w-orking up of a naval cruiser. Typhoon Wing, the founder of which was No. 56 Squad­ By 1944 the Typhoon’s faults had been mastered, and ron who received initial deliveries of Typhoon Mk.Ia with the Tempest coming into service, twenty-two aircraft during the second week of September, 1941. In Typhoon Squadrons were formed into the Second March, 1942, No. 266 Squadron rc-cquipped with Mk.Ia Tactical Air Force, the aircraft receiving a final major Typhoons at Duxford, and in the same month No. 609 modification consisting of a clear-vision bubble canopy. Squadron’s Typhoons arrived. From just prior to D-Day, when Typhoons destroyed the All these machines were a motley collection of variants, vital German radar installations, until the end of the war, some with .303 in. guns and faired-in cockpit aft of the this deadly support fighter roamed the European battle­ doors, others with perspex rear fairing, and some, field. and in one day alone they destroyed 135 enemy officially Mk.Ibs, armed with 20 mm. cannon. Stan­ tanks. In July, 1944, General Rommel himself was dardisation was achieved later, by modification, to wounded by 193 Squadron, and in October five Squadrons perspex rear fairing and cannon armament for all shattered the H.Q. of the German Fifteenth Army, the machines, also introduction of V.H.F. radio. The Wing H.Q. of the 88th Corps suffering the same fate in Febru­ encountered technical trouble in abundance, with engine ary, 1945. fires on the ground, engine failures in the air, and worst of At the war’s end, the Typhoon was speedily replaced all structural failure of the tail assembly, which caused by the Tempest, and nearly all machines were immediately many accidents. Through all this, civilian and Service scrapped. In all, a total of 3,330 were built, 254 of them personnel toiled unceasingly to eliminate the faults, and being Mk.Ia, the majority of the latter being converted to among all the other work the tail sections were Mk.lb standard. A small number of experimental strengthened by the simple yet effective method of variants was developed, including a radar-equipped night riveting fishplates all round the tail joint. fighter, a tropical version which underwent tropical • This note referred to the refusal to allow groundcrcw to ballast the clearance trials at Khartoum, and one machine with an tail during an engine run by the usual system o f four bodies laying over the tail plane. It was necessary instead to shackle the Tiffie by special annular radiator. A few Typhoons were fitted with three harness to a link in the blast-bay floor F.24 cameras in the port wing, being designated F.R.Ib.

EK183 of 56 Sqdn with Sabre running shows overwing white stripe (also used on early Mustangs) and the early cockpit canopy with door side entrance and car 'pe windows. This was the first of the ?yphoon Squadrons, stationed at Duxford. STIFFENING

(OUTBOARD

CODE LETTERS INBOARD.)

eprints of this feature plus l/24th ale dye-line prints of the original I STARBOARD WING SIMILAR) e available as plan pack S.H. 2808 Specification (M k.1B) |io rtw ngjimilari '' ice 5/. from AEROMODELLER LANS SERVICE 13/35, Bridge Street, Power Plant:—One 2,180 h.p. Napier Sabre IIA, 2,200 h.p. Hemel Hempstead. Herts. Sabre IIB, or 2,260 Sabre IIC (four-bladed airscrew). Dimensions .-—Span 41 feet 7 inches. Length 31 feet 11 inches. Height (tail down), 14 feet 10 inches. Weight loaded:—11,700 lbs. (clean aircraft). Performance (.Sabre IIB):—Max. speed, 409 m.p.h. at 10,000 feet. Range (internal fuel), 380 miles. Armament:—Four 20 mm. Hispano Mk.l cannon, eight 3in. HAWKER TYPHOON MK. IB. solid fuel rockets or two 250,500, or 1,000-lb bombs.

l/72nd SCALE DRAWINGS CONTINUED ON PAGE 395 1 /72nd SCALE DRAWINGS CONTINUED FROM PAGE 386 396

ENGINE TEST by Peter Chinn D-C 'QU/CKSTART' SPITFIRE

The crankcase extends upwards to just above the level of the exhaust ports, where it is widened so that the flange on the cylinder sleeve drops down inside until arrested by an annular seating in the casting. The finned cylinder jacket then drops over the cylinder sleeve and screws into the top of the crankcase so that its lower edge butts against the liner flange, thereby securing the com­ plete cylinder assembly. The cylinder ports are of the radial type. Three exhaust ports are located at 120 degree intervals through the flange and below them are three slit type transfer ports. As is usually the case with this type of porting, the T is now thirteen years since the original Allbon exhaust has a very considerable timing lead on the I Spitfire 1 c.c. diesel, designed by Alan Allbon and transfer porting. In the case of the current Spitfire, the manufactured by Davies-Charlton Ltd., was introduced, transfer ports are open for a modest 104 degrees of crank and more than nine years since it was superseded by the angle but the exhaust ports are open for nearly half a entirely redesigned Spitfire Mk.II. complete revolution—actually an unprecedented 178 The present Spitfire is basically the same as the 1957 degrees on our test engine, which is about 40 degrees model, but incorporates a fewr small changes, plus the more than one normally encounters with, for example, addition of a starter spring and, as an extra, a silencer a loop-scavenged glow' engine. unit. D-C were one of the first British manufacturers to The measured rotary-valve timing wras also somewhat offer silencers for their engines. unorthodox. The valve closed at 45 degrees after top dead The D-C silencer is a very simple and modestly priced centre which is quite normal, but did not open until the affair: just a U-shaped aluminium tube, suitably cut away crank was 85 degrees past B.D.C. A circular crankshaft at the centre, where it is wrapped around the upper part port of 5/32 in. dia. is used and this registers with a of the crankcase to cover the two exhaust outlets, and circular port in the main bearings. The crankshaft runs secured with a 6 BA screw' and nut. The twin tailpipes direct in the crankcase material and employs a plain non- thus formed are then packed with steel wool to form twin counterbalanced disc web. absorption type silencers. The Spitfire is equipped with Davies-Charlton’s When originally tested on the .8 c.c. Merlin and 1.5 c.c *‘puickstart” spring starter assembly. This consists of six Sabre, we found that this type of silencer could cause quite coils of 17 s.w.g. spring steel wire, surrounding the an appreciable reduction in power, but, as tested on the crankcase nose and anchored by the left hand crankcase Spitfire, the power loss was quite modest. Prior to actual screw'. The free end of the spring is formed in a loop to prop/r.p.m. and torque tests, we took the precaution of engage a dural cam behind the prop. removing the old oil-soaked packing and lightly re­ A stop-pin is fitted to the Spitfire cylinder-head to limit packing the tailpipes with fresh steel wool. the compression lever movement to one complete turn. The general design o f the Spitfire follows that of the This is a useful addition to a beginner’s engine for two 1.5 c.c. D-C Sabre model. The main casting comprises the reasons. Firstly, it reduces the extent to which the be­ crankcase and front bearing, including carburettor in­ ginner can get muddled in finding the correct compression take, plus a pair of very thick beam mounting lugs. These setting, especially if he, or someone else, has. as often latter contain the long backplatc mounting screws which happens, previously fiddled with the compression screw also serve to retain the fuel tank or, if the tank is omitted and disturbed the factory setting. Secondly, it minimises can be used as an alternative means of mounting the the risk of damage to the connecting-rod, gudgeon-pin or engine—i.e. to the front bulkhead or firewall instead of to crankpin, through attempts to start the engine on too high longitudinal beam mounts. a compression setting. A compression stop has only one dis­ advantage. This is its tendency to limit the extent to which the engine can be controlled on the largest and smallest props that it is capable of turning. In the case of a beginners’ engine, this is not important, as the propsizes generally used will hold the operational speed range within fairly close limits. Actually, on the Spitfire, we found the range of available compression adjustment more than ade­ quate. When a stop-pin is fitted to a diesel, wfe have sometimes found it necessary to remove the pin to enable the ignition timing

Robust, well finished parts of the Spitfire. Detachable fuel tank and spring starter unit are included and, with the low-priced silencer unit, combine to make this a very economically priced power package for the beginner. BRAKE HORSEPOWER 4 - 4 experienced modellers will find it just as easy by the con­ the by easy as it findjust will modellers experienced hud e on bc ol aot afa un A very A turn. a half about only back wound be should not, did silencer the of use the and necessary not was of range speed static a 3covering 15,200x 6 5,300r.p.m. to to ranging down props 4 on x 9 from operation the however, permitted Spitfire, position model stop-pin test highest be our On to the curves. engine power to the allow adjusted thus be and speeds lowest to and/or setting) (compression that, unlike the starters on some glow engines, the spring spring the glowengines, some on starters the unlike that, noted be should It prop. the flicking of method ventional but spring, using starter the may Beginnersto start Spitfireeasier findthe procedure. starting complicate therefore, and torque determine to range r.p.m. full its over tested 1 - ) Starling was good. Priming through the exhaust port port exhaust the through Priming good. was Starling - 4 ■ 4 - - behind the prop, instead of using the prop blade, itself,to blade, prop the using of instead prop, the behind with the silencer removed and found that the greatest greatest the that found and removed silencer the with ih yas g, ept te at ht h odr engine older the that fact some the silencer despite without ago, tested years eight Mk.II Spitfire with earlier obtained a we inthe than resulted and output maximum greater anticipated slightly been had than higher was speedpeaking The the silencer. of removal affectedthe by b.h.p. .085 under just Spitfire, the of output peak actual nae h tre pig i a od n, seily with especially one, good a is spring, starter the engage pcfc Output Specific Ratio Power!Weight engine.first beginner’s the a as make excellent choice to Spitfirean helps engine, the of qualities construction handling robust easy and the to added and, models power This engine. D-C each accompanies leaflets, instruction is beginner The release. on vigorously engine the to sufficientisquite spin turn a half and usedis spring strong Prop and 13,400 and Prop a 6 on wood. x 4 Top-Flite 12,600 11,0006 Power-x4 a 7 on 3nylon, P.A.W., a x on 7x a 4 Top-Flite 9,300 7on 534 8 x8,100x wood, P.A.W., a Top-Flite on an 8,100 on nylon, 8x4Tornado an on of speed a for speed by Loaded raised only silencer the cent. of 11,000 r.p.m., removal per 58,000r.p.m., 10,000about of loss a around with range, middle speeds the highest in the but at not surprisingly, came, loss power Spitfire the checked also We fitted. silencer the with out started off off torque. started by developing maximum higher little therefore, was, r.p.m. 13,800 approximately at scar woodenscar a prop. s akd ih sfl nomto fr h nwoe to newcomer the for information useful with packed is the winding when slip blade prop the let to not warned the strong spring necessary on a diesel, which tends to to tends which diesel, a on necessary spring strong the rpbc gis h pig hscn euti painful a in result rap can this spring: the against back prop 150 r.p.m. and at 13,500 the loss was only 250 r.p.m. The The r.p.m. 250 13,500was only loss the at 150and r.p.m. EST TONS N ITIO D N O C T S TE iecrType: - ucsat s recommended. as Quickstart D-C : e p y T Silencer transparent transparent t shrcTmprtr:5 dog.F. 50 perature: Tem ospheric hours. 2Diesel. Atm Keilkraft st: te to used: prior Fuel e tim Running ao tr 00 n Ha.30.00 in. eter: Barom journal, 0.156 in. dia. crankpin and 0.140 0.156 and passage. gas bore crankpin In. journal, in. dia. beam and two-point bulkhead mounting lugs. Detachable Detachable lugs. mounting Combined bulkhead assembly. two-point spraybar and Brass beam crankshaft. on taper necting rod. necting 0.125 in. dia. solid solid dia. in. 0.125 Hardened steel steel Hardened w-toe yl, opeso into. rnsat type Crankshaft ignition. bearings. Plain scavenged induction. compression reverse-flow rotary-valve cycle, air-cooled, cylinder, Single two-stroke : e p y T oae b anlr etn i cakae Mcie alu­ Machined crankcase. in finned alloy seating minium annular by located screwed into crankcase to secure cylinder assembly. assembly. cylinder secure to crankcase cast-iron Lapped into screwed buslicd main bearing unit, with detachable roar cover. cover. roar detachable with unit, steel bearing Hardened main buslicd eea Srcua Data Structural General 3.4 silencer oz.less eight: : 0.988W :1Ratio 0.976c.c. ^ 0.0596cu.in. : Stroke/Bore e olum V 0.420in. ept Stroke: Sw 0.425in. Bore: N ATIO IFIC SPEC 0.37 b.h.p./lb. 0.37 7,200 r.p.m.following: the included checks Prop/r.p.m. 86 b.h.p./litrc. 86 of complete, most the certainly and best, the of One Most of our tests, including torque tests, were carried carried were tests, torque including tests, our of Most Pressure diecast aluminium alloy alloy aluminium diecast Pressure on the 3.6 oz. with silencer 3.6silencer oz. with Machined aluminium alloy alloy aluminium Machined fingers. fuel tank. fuel a tse cmlt wt silencer): with complete tested (as yidr liner, cylinder crankshaft piston gudgeon-pin. a tse cmlt wt silencer): with complete tested (as Optional absorption type type absorption Optional The idea of a separate dural plate plate dural separate a of idea The cooling jacket, cooling with conical crown and pressed-in pressed-in and crown conical with ih ic e, .1 i. dia. in. 0.312 web, disc with lne a ehut et and belt exhaust at flanged Forged Hiduminlum Hiduminlum Forged colour anodised blue, blue, anodised colour crankcase prop-driver silencer uy 1966 July, and un- un- and fitted to to fitted unit. con­ 399 July, 1966 drag of the wing at this high incidence, and shows that when the silencer is working properly the exhaust gases coming out of the upper surface give the effect of a “blown flap” and so reduces the actual drag of the silencer. So for a given wing silencer the better it is sealed the better will be the speed increase and the noise reduction. The arrangement in D.B.l was exaggerated to test whether the theories would work. For possibly even better results the silencer can:— 1) Be set at a lower incidence to reduce the drag. 2) Have the holes drilled even further forward to use the absolute maximum suction developed (peak suction on a symmetrical wing set at 5°, is at about 1 % back from the L.E.) 3) Have more and possible slightly larger holes drilled in Glass fibre moulded, venturi extractor silencer on Dave Batch’s the upper surface. If the silencer is then too noisy, Oliver Tiger F.A.I. team racer, note large sire. wire wool may be added to the expansion chamber. If the suction holes near the leading-edge, which will not in still too noisy it is a simple job to block off some of anyway restrict the gas flow. the holes again. It is adv ised not to drill holes of more However the real shortcoming of using the main wing than iV in. dia, and not to exceed a total exhaust area is that most models (except small C/L speed and trainer of more than \ the collector ring outlet or exhaust models), when travelling under power are operating at a port area. very low angle of incidence. As a result the peak suction As far as application goes, any condition where the is quite small, and so the system is operating at a much upper surface of the wing silencer can become the lower lower efficiency than it would do when using its own surface, is naturally out. This will occur on any R/C or separate wing silencer set at a higher incidence. C/L model that has an upright motor and can be made to If ultimate power is not required then the main wing fly inverted. Models with sidemounted motors will be can be used as it will make a quiet and convenient alright if the upright mounted wing silencer does not arrangement. introduce any odd trim effects. For a combat model this Venturi Silencers arrangement is ideal, for the wing will substantially Another way of obtaining a suction is with the help increase the line tension but the unit does become a little of a venturi. The general lay-out of the venturi is as given vulnerable in a crash. For speed and team race models last month. This type of silencer is employed in the which only fly one way round, no trouble at all is ex­ commercially available ETA unit, and by a number of pected. Team Race fliers notably Brian Turner. So far no actual mention of size has been made. This However they usually employ a shallow- inlet angle is deliberate because each application must be considered and sharper outlet angle. The arrangement which is on its own merit. For best results a fairly large wing area likely to give the least drag is that shown in the sketch with low thickncss/chord ratio is required. D.B.l. and published last month. D.B.2. w'erc both 2 in. span, 3 in. chord and $ in. thick Construction of the venturi silencers is somewhat with a symmetrical section. However these sizes were easier than the wing silencers. Almost any sheet material dictated by mounting them in combat models to clear can be used, even balsa if suitably fuel and heat proofed. tanks and give adequate prop clearance. The thickness was However for a more durable result, metal sheet welded or such as to allow the exhaust ports in, with sufficient built Araldited together is preferred. However, if tests on in incidence. If a flat bottomed section is being used, the sizes arc planned, then a few quick balsa silencers could thickness can be reduced slightly as the non-symmetrical give you an idea of the general effect before the ultimate section has effective built in incidence. The wing span was metal one is made. cut down from that desired to give minimum overhang to The sequence of construction is to make the two inner reduce crash damage. cones and the throat tube, join them together and drill The D.B.l and D.B.2 silencers were welded assemblies of aluminium sheet. Unfortunately this method of the exhaust holes. Slide them into the outer fairing, construction is not available to everyone. However al­ packing with wire wool as thought necessary. Then most any sheet metal can be used instead and the silencer arrange a method of mounting the silencer onto the can be assembled with “Aralditc”. The ordinary 2 tube engine exhaust, (direct or via a collector ring) and finally pack “Aralditc” is quite good but a special one, available seal every joint thoroughly. Like the wing silencers, ven­ direct from the manufacturers is much better for alu­ turi silencers will work at their best only when all odd Brian Turner’s moulded glass fibre venturi extractor, semi minium. This is Aralditc ATI which is solid. Melt this at buried in fuselage to lessen drag, has won many contests. the joint at 80° C or so then cure it at 180CC for 1 hour. One could also use AU1 which is ATI filled with metal powder—better for conducting away heat. Some people may be asking why not use the available lifting surface (the normal wing). This may seem the logical solution. However there arc a number of limi­ tations. To obtain any degree of silencing with minimum power loss we need an expansion chamber in the system. If this is to be in the wing itself we must naturally have a fairly thick wing ($ in. thick or more). Unfortunately most models that have thick wings arc designed to fly inverted at one time or another, which then ruins the system. For models with thin wings, and using a separate expansion chamber, the problem will be in getting an adequate gas passage in the wing leading to Aero Modeller 400

At left glass fibre extractor venturi silencer with brass manifold for Oliver Tiger. Exhaust is fed from ring manifold to expansion box at rear and then into settling chamber in venturi. Right a head-on view of the venturi shows relationship of D to d. (Refer to diagram p 345 June issue.)

leaks have been eliminated, for then all suction is applied used. If the motor is large and D is small, then although to the exhaust gases and not lost. sufficient suction may be generated at the throat, the An alternative construction method is to use fibreglass. flow of exhaust gases may be sufficient to more than fill Here we again construct the centre ducting first. One way the suction, and so a back pressure may exist. So ob­ of doing this is to shape the venturi out of wax, lay on the viously for a large motor, D must be suitably large. fibreglass, then when hard, heat until the wax melts and Conversely for a large D and small motor the suction runs out. However if more than one silencer of the set size might be such as to extract the exhaust gases too effec­ is required that shape can be turned from wood, then cut tively and so increase the fuel consumption. across the throat area and pinned with a dowel, back The ideal size for your own motor can only be found by together again. After preparing the surface and applying experiment, but a good starting size can be D 1J in. for the releasing agent the fibreglass is added. Then when 0-29—0-35 cu. in. glow motors, I in. for 2.5cc diesels. hard, the wooden mould can (we hope) be pulled out from each end. Tied in with the diameters arc the number of exhaust The three main variables in the venturi silencers arc the holes to use. The best number can only be found from two diameters D and d, and the number of exhaust holes experiment, but as with the wing silencers it would be of diameter O ld. D/d governs the amount of suction advisable not to have a venturi exhaust area more than generated at the venturi throat. The number of exhaust half the true engine exhaust area. holes is governed by the engine size and noise level In a side exhaust stack motor the true exhaust area is acceptable. not the area of the exhaust stack but the area of the D/d is the first variable to consider. The higher D/d is, opening in the cylinder wall. the greater will be the suction at the throat, but if the If a low value of D/d is used (say 1$ to 1) then noise ratio is more than 3 to 1 then considerable drag will also may still be a problem. This can be minimised by using result because compressibility of the air is present. an expansion chamber between the motor and the When considering D we must consider the motor to be venturi, and by packing everything with wire wool.

Latest Engine News and 130 degrees transfer. The piston follows the Supcr- Tigrc in having no baffle, but is a trifle lighter than the Continued from page 381 pistons of both the Tigre and the K&B. There is an The forthcoming World Control-Line Championships annular stiffening rib immediately below the 4 mm. at Sw-indcrby may well produce a new Moki engine but, gudgeon-pin. The machined dural con-rod is slightly in the meantime, some details of last year’s model may be longer, between centres, than the Supcr-Tigrc. The of interest. A very small number of these engines arc now' cylinder head gives a shallow cone-shaped combustion in use outside Hungary and a few months ago, speed flier chamber and is entirely without squish area. Gordon Farnsworth was kind enough to let us have a The engine has the usual Continental bore and stroke look at his own example. combination of 15 x 14 mm., weighs 5.4 oz and is very As our photographs show, the engine bears a distinct well made throughout. Performance is considered to be resemblance to the K&B 15R in many respects, except comparable with a reasonably good G. 15. for the cylinder porting which is quite obviously Supcr- Tigre inspired. It is also surprisingly “production-job” in The resemblance of the Moki S-3 (left) to the K&B 15R it appearance—in the complimentary sense, that is. readily seen in this photo. The similarity to the K&B is particularly noticeable externally and also in the main casting, the shaft and the rotary-valve design. The crankshaft uses the Wisniewski “hidden counterbalancing” system, in which the cutaway portions of the crank disc arc sealed off by a shrunk-on aluminium rim so as to reduce effective crankcase volume to the minimum. The shaft has a 7 mm. dia. journal and a 5 mm. crankpin and is carried in twin ball bearings in a stout front housing. The backplate carries a valve rotor of Tufnol type material mounted on a stationary pin. It is timed to open at 40 deg. ABDC and remains open for 190 degrees of crank angle. The cylinder liner is virtually identical with that of the G.20/15 model Supcr-Tigrc. However, designer Gyula Krizsma has elected to retain a short exhaust lead to the timing, respective periods being 136 degrees exhaust July, 1966

Left, J. Connacher’s multi channel R/C design with swept wing and “Constel­ lation” propo equip­ ment (See RCM&E for R/C Nats). South African Nats. Β,„Τ The 1966 S. A. Nationals will be April flying day with beautiful weather—but remembered for some perfect flying weather, minimum lift. John Swallow’s ''thermal some good organisation and some terrific Hunter" design was in evidence and there thermals. It will be remembered too as a was a sprinkling of Inchworms, Continentals Nationals where the "big names” in S. A. and an APS Rolling Stone. W. Pretori us Acromodclling had to fight all the way for (Rand Mac) was going well with 4 maxs their successes and the appearance on the in a row and was unlucky to have the wind scene of a new “star” in \V. Prctorious of do a complete “ VOLTE FACE" and due to Rand Model Aircraft Club. Entrants came inexperience was not able to bring his ship from Rhodesia, East London. Port Elizabeth around and launched downwind for a paltry and Cape Town, Pieter Maritzburg and 25 secs! A beautiful builder, this boy. Vic Durban to the field at Johannesburg. Hoxlcy (Port Elizabeth MAC) with an O.D. Flying got underway at 0700 hours on was “battling it out” as a one man team. 8th April, 1966 with WAKEFIF.I.D (14 Roy Fraser (Rand Muc) with a Rolling Stone entries). Air was damp and no wind or and W. Garrard (Maritzburg Mac) tied with drift. An ingenious adaptation of the 775 secs for the first ever fly off in this event Kauhavu “ Bubble Bottle” worked by means in S.A. Roy towed steadily into a beautiful of a fan and a battery showed that thermal thermal and Garrard followed him but activity was present even though it was light. towed almost through the “bubble” before By 07.35 no modellers had dared to risk launching. F'rascr got his 210 secs whilst B. TEAM RACE produced 7 entries with flying “damp tished" models and it was left to Garrard was down for 90+ secs. no surprises in the event the results of which John Cowlin a junior of Western Province 1st ROY FRASER (Rand Mac) were as follows:— to lead the way with a beautiful max. By the 775+210 secs 1st F. TURNER (Topliners) 7 min 42 sec end of the third flights Cowlin had registered 2nd W. GARRARD (Maritzburg Mac) 2nd E. BECKER (Rand Mac) 444 secs. Next closest was Brian Partridge 775+90 secs 10 min 31.6 sec (365 secs.) and Γ. Burroughs (358 secs.), 3rd W. PRETORIUS (Rand Mac) 745 secs 3rd A. v. BREDA (Rhodesia) both of Rand Model Aircraft Club. Lift was OPEN RUBBER attracted II entries and 15 min 0.8 sec. now alternating with downdraft and the the thermals were now becoming express lifts. OPEN COMBAT proved to be a crowd picture changed rapidly, but with Cowlin Wind was in evidence and made retrieving plcascr and one of the best flights was showing the seniors the way. Partridge and a long business. 6 max’s were recorded in the produced by Herb Newton (W'cst Prov) and Burroughs faded to be replaced by Calefato 1st Round. Competitors were being rushed E. Ncvin (R Mac). and Rowe (both of Western Province) and for time and excitmcnt was in tense with 1st E. BELL (Rhodesia) 90 pts I'orbes and Kittcl of Rand M.A.C. entrants trying to put their last flights in. 2nd E. BECKER (Rand Mac) 76 pts Final Placings were:— Final placings:— 3rd H. NEWTON (West Prov) 71 pts 1st. J. COWLIN (West Prov.) 735 secs. 1st J. SWALLOW (Rand Mac) 830 secs On 11th April jAT/R attracted 6 entries and 2nd J. CALEFATO .. 670-., . . 2nd R. ROW E (West Prov) 701 secs final placings were: 3rd J. SWALLOW (Rand Mac.) 562 secs. 3rd T. TYRER (Rand Mac) 680 secs 1st F. TURNER (Topliners) Cowlin flew his modified "Lonp John" by (4 flights) 10 min 13.8 secs J. Calefato beautifully and showed the HAND LAUNCH GLIDER produced the 2nd A. v. BREDA (Rhodesia) designer just how the model should be usual record number of entrants (it would 10 min 24.5 secs flown. seem that this is one way to let off the tense­ 3rd H. MATHEWS (Topliners) i A POWER with 24 entries was next. The ness of competition flying) 5 juniors flew. Quite a turn-up for Mr. Turner! He seems to weather seemed to have settled down and a 1st W. PRETORIUS (Rand Mac) 313 secs have won all that was going in team racing-Ed. slight btee/e was responsible for a small 2nd J. SWALLOW (Rand Mac) F. A.I. COMBAT results were: amount of drift. In the 1st round four maxs 3rd S. McCULLAGH (West Prov) 1st B. MENGES (Topliners) were recorded Becker (Rand) Calefato 1st Junior H/L was G. Swallow 2nd E. NISSEN (Rand Mac) {Slowworm) and Rowe (W. Prov) and G. OPEN POWER with 16 entries, followed in 3rd E. BECKER (Rand Mac) Wellstcd (Jnr) East London MAC. By the windy conditions and many planes were lost A smashing dinner-dance at the Club House third round downdraft was more prevalent after being seen to D.T. and still going up. of the Transvaal Aero Club brought the Nats than thermals and it was the “good flyers” Fortunes swung one way and another and to a happy close. All voted it one of the best who made the grade. Young G. Wellstcd was the final placings were:— and a big “ thank you” was voted Mrs. VAL giving a good account of himself at this his |S1 (■· BOUWI R (Rand Mac) 721 MCS SWALLOW for her hard work as Recorder very first Nationals. 2nd J. SW'ALLOW (Rand Mac) 656 secs and one of the organisers. Final placings were:— 3rd M. SILKSTONE (West Prov) 608 secs A band of ··FETCHLRMITES" (young 1st J. CALEFATO (W. Prov.) 789 secs A/l GLIDER ended the day with 24 entries AFRICAN boys) well trained in currying 2nd G. WELLSTED (East l.ond) 746 secs in wild and windy conditions. Wings were and spotting made retrieving easy for a small 3rd E. BECKER (Rand M ac)684 secs folding with monotonous regularity. Aiglets fee. I here were 19 entries for F.AJ. POWER and predominated. Main criticism was that it was "toohot” Ah! Vikings and Vhlmeters dominated the scene 1st ROY hRASKR (Rand Mac) 429 secs well modellers are never happier unless they with one Diesel engine (J. Swallow) 2nd W. PRETORIUS « Rand Mac) 413 secs are grousing. Lift was patchy but the breeze had increased 3rd B. GUNNELL (East l.ond) 408 secs Only scale entry was this Becchcraft D17 and this seemed to help these “heavyweights” The first of two days set aside for Control by Roger Stern from Rhodesia. overcome the "watered” fuel position. Line dawned clear and crisp. 12 entries were Final placings were:— received for F.A.I. T,'Race with O.D.’s pre­ 1st J. SWALLOW (RMAC) 659 secs dominating. Final placings were:— 2nd D. COM I NS (RMAC) 624 secs 1st F. TURNER (Topliners) 3rd S McCULLAGH (West Prov) 605 secs 5 min 8.6 secs OPEN GLIDER with 23 entries followed 2nd B. MENGES (Topliners) next, under an overcast sky with scattered 5 min 48.8 secs lift. John Swallow (RMAC) entered a beau­ 3rd H. MATHFWS (Topliners) tiful 0-1). job with "egg box "construction 6 min 10 secs in the wings and stabilizer. Wines were held STUNT produced 7 entries with O.D.’s down by concealed rubber bands while the predominating. Flying was good and man- Auto Rudder was enclosed in u beautifully ouevres were executed smoothly. Final finished fuselage. The plane did not however placings:— live up to its looks and did not place. 1st W. PRETORIUS (Rand Mac) Final placings were:— 1100 pts O.D. 1st R. ROWE (West Prov) 678 secs 2nd L. MARNEWEKJE (Rand Mac) 2nd E. NISSEN (Rand Mac) 676 secs 1024 pts O.D. 3rd G. K1TTEL (Rand Mac) 581 secs 3rd E. BECKER (Rand Mac) *4 entries (a record) for A/2 opened the 9th 902 pts O.D. 402 Australian Nationals held at Canberra, reports by Brian Horrocks OPEN *A TEAM RACE impressive and drew a bigger crowd of Colin Cox, Winner of F.A.I. Power using The four finalists were Bill East, Mai Pring, spectators than most other events. First was a time proven model well trimmed and Scan O’Connor and Geoff Lawson, all of Ross Woodcock with a Cessna 336, Barry precisely flown. whom were using Oliver Cubs. About hah Bowerman’s Piper Tri-Pacer was awarded F.A.I. TEAM RACE way through the race Geoff Lawson's model second place, followed by the Southern Cross F.A.I. Team Race with 22 entries was the was blown into the centre of the circle caus­ of A. Edwards. most popular class of team racing, but as with ing it to wing over with such force that the the other classes, race times were rather low. control handle was ripped out of Geoff’s RADIO Perhaps the altitude of Canberra had some­ hand. The radio events were very poorly suppor­ thing to do with this; many competitors found The model crashed into the crowd of ted with only one entry from Victoria, two their machinery going slower thun usual at spectators, but luckily no one was hit. This from Western Australia, with the remaining home, although at the same time some had left the race to be battled out between Bill entrants all from N.S.W. found increases in lappage. East and Mai Pring as Scan O’Connor was The Multi channel event was the best The three finalists were Ron Wilson— unable to finish the race. The finish was the supported. Tom Prosser won once again, Gordon James, Brian Father—Ian Roach closest of all the team races, with Mai Pring using a modified Sultan (Merco -61 and and Garry· George—Trevor Hughes. being beaten by one lap. SiJvcrtonc Gear) Second was Basil Healey Garry George was unlucky to break a with a Sultan (Merco -49 and O. S. Gear) and crankshaft in his ETA just before the final SPEED third Mike Pettigrew with a Pegasus (Veco and without time to get his model going Phil McGee’s Rossi 60 powered class III •45 and Silvcrtonc gear) The standard of properly again his chances of a win looked speed model hurtled off into the junior flying was not high. pretty remote. Ron Wilson’s model used an combat circle, confusing the judges as to Tom Prosser also won Intermediate with Oliver Tiger mounted in a short Pomadi pan. where this gyrating third model had come an O.D. Model. K & B and Silvertone gear, Brian Father's model’s design was strongly from. Sorry Phil, you lost 100 points for with Mike Pettigrew second with an Aristocat influenced by Dick Place’s successful Super going in without a streamer! (Merco ·49 and Silvertone) and Ken Millard Nova, but with more functional and sim­ Lcn Buck’s model lived up to its owner’s third, also with an Aristocat (Merco -49 and plified features than the Place machine. name as it screamed off' into the wild grey Silvertone gear). At the drop of the flag Wilson was away onder and ’’bucked” over the safety fence. Scale was won by—guess who?—Tom first, followed by Father then George with a B)ave llaylcs came out of the dolly and into Prosser yet again with his magnificent Piper very sick motor. Ealher was travelling at a wing-over which teminated several inches Pawnee (Merco -49 and Silvertone gear.) just on 90 mph and expecting 50 plus laps, underground. With all this crashery by the while Wilson only had about 78 mph with big models only two competitors recorded FREE FLIGHT lappage in the forties. On his second tankful official times in class III, the best being a The free flight events were by far the best Eathcr’s motor overheated badly and slowed record shattering 161 mph by Ivan supported events. The field however, was far right back to 72 mph. At the same time Vodopivec’s Rossi 60. Despite his prang, Len from satisfactory, being close to houses with Wilson’s speed had improved to 80 mph and Buck notched second place with 152 mph the prevailing wind in the direction of the he passed Father several times. At the second with hisMcCoy 60. houses. Many models were lost. The standard stop Roach backed off the compression on Ray Finneran was the winner in F.A.I. of flying in all events was extremely high. The Father’s motor and from then on the two speed with 123 mph. Second was Laurie weather was hot calm early in the morning models were pretty even for speed, both Cantwell with 120 mph and Len Buck third with wind increasing during the day. circulating at about 86 mph. George had with 117 mph. All three were using Super retired by this time. As the race wore on it Tigre 15’s. POWER DURATION CLASS I was noticeable that pitstops were taking Nine competitors returned times in Class This was one of the best supported events. longer as motors got hotter. Father made II speed and heading the list was Lcn Buck Cox Tec— Dec, 'D49s and -051s were almost stops at 52, 125 and 196 laps nnd came in the who turned in 143 mph with his Rattler. universally used. Winner was R. Brennan winner with 200 laps in 10 : 36. Wilson’s Phil McGee was close behind with 142 mph with a Dynamo. Second C. Cox with a stops were quicker than Roach's but there from his Super Tigre 29 RR and Andy Kerr Mini-Weaver and third was K. Murray with were more of them and they took II : 02 to was close behind despite having troubles w ith a Dynamo All used Cox T.D. 051s. (.and our complete the race. his K & B. Monoline control once again proved its plans—Ed!). JUNIOR 4Λ TEAM RACE worth, fine demonstrations being given by It was immediately apparent that the high Ivan Vodopivec, Lcn Buck, John Morgan, F.A.I. POWER winds nnd inability of liny models to land Stewart Cobcroft and Andy Kerr. This was again a well supported event, with properly on the reasonably good grass sur­ approximately 20 entries. The most popular face would not make for very clean racing. PROTO SPEED motor was the square-port Super Tigre 15 Nevertheless most of the Juniors did a very This event saw some real fireworks and but the winner. Colin Cox used a Cox Special creditable job. ended up w ith the setting of a new Australian •15 in. a modified Pultcri. Second was Ford The finalists were Greg Fahey—David record which compares more than favourably Lloyd and third R. Greaves, both using the Arthur, John Toycr—Roger Whyte and Bill with the best yet done overseas. Australian designed Eclipse with Super Tigre East. Previous record holder Andy Kerr was •15s on pressure. Doug Murray had the Fahey and Arthur were left at the start flying his usual lightweight blunt cliptical highest climbing model—a Viking powered and did not get going until well into the winged K & B powered monoline model to by a Cox Special -15, but struck r‘downers” race. Toyer and Whyte were unlucky to lose reel off 126 mph for the standing mile which on two flights. the cowl off their model while going well, looked for a while as though it might win. At bringing about their disqualification, leaving this stage John Morgan had 115 mph and OPEN POWER DURATION Billy East to run out winner using an Oliver Ivan Vodopivec was flying at about 113—120 This was a new event based on 5 flights Cub in a Pomadi cast pan. His was the only mph. Ivan’s Super Tigre had been swinging with a total engine run of 35 seconds. Maxi­ model to finish 180 laps within the allowed a full 8x8 Rev up prop and was not sounding mum flight time was 3 minutes. The event 15 minutes. particularly fast so for his last flight the prop was popular and will be used instead of the was cut down a bit and a new fuel tried, a old power ratio events at future Nationals. combination which resulted in a run of 138 Winner was K. Murray using a Dixielander mph! Ivan's 138 mph had undoubtedly won with Cox Special -15, second was F. Lloyd the contest, but it would not be counted as using an O.D. model with Cox -09 and third an official Australian record because he had was A. Butler. not used the anti whip pylon for that run. Preparations were immediately made for a special record attempt. This time Ivan made SENIOR A/1 SAILPLANE a frantic dash to get into the pylon as soon Winner o f this event, F. Lloyd, was going as the model was released and his little blue to withdraw from this event until friends model screamed around at a top speed of 152 mph to give an average over the standing mile o f 136 mph, a new record. CONTROL UNE SCALE Control line scale event had only a few entries, but these were nevertheless very Left, Les Fahey with his winning A/2 model. Right, The Cockpit of Prosser’s Pawnee complete with pre-flight check list on top of instrument panel. 403 July, 1966

Left, Bob Greenhill with his perennial Glostcr Gladiator. Always a great crowd pleaser. Right, Australia's No. 1 Speed flyer Ivan Vodopivec with his winning class III model. persuaded him to continue. Ford used an weight stunt layout which towed a streamer Aiglet. Second was C. Cox and third T. at 75 mph carried home the bacon. Andy Prosser flying a “ Telstar”. Kerr the eventual winner had only one model with him and it is to his credit that he Λ/2 SAILPLANE flew right through to first place without A competitor finally achieved a 900 second pranging it. total in this event at the Nats, l.es Fahey flew The outstanding engine though was the 5 maximum*, with his modified “Migrator”. Super Tigrc 15 glow, a good number of Second was L. O’Reilly flying his O.D. contestants used them including the winner, Heavyweight (19-5 ozs.) and third S. who has his swinging a clipped down 8 x 4 O’ Connor flying his O.D. model. Tornado Nylon prop. To quote Andy “I L. O’Reilly tried for the Australian sail­ think that F.A.I. combat is a good version of plane record on his last flight, but only slow combat which costs much the same us achieved 13 mins. 12 seconds after D.T.- Open Combat and leaves the beginner who ing., Les Fahey set a new looping record does not know how to use his motor to its when his model looped 87 times after D.T.- limits out in the cold". ing on one flight. Quite spectacular. FLYING SCALE CLASS II TEAM RACE First was D. Marshall flying a Sopwith Class II team race with 20 entries rivalled Trlptanc and second J. Marshall flying a F.A.I. for popularity. The finalists were S. Fokker Triplane. Both models flew well. Young, Enya 29 3B in a Pomadi pan., R. Wilson OS Max H29R in Pomadi pan. G WAKEFIELD May Super Tigro 29 no pan, and M.Caux's A. Butler won this event with his old Super Tigrc 29 in Pomadi pan. patched, but very consistent model. Second At the start Wilson was first away, but was R. Grccnhill with a well constructed Young broke a prop on take-olf and lost a model of his own design. There were a num­ lot of time. May too. lost lime at the start. ber of new faces in this event, which augurs Wilson’s model powered with an OS 29 speed well for the future. motor fitted with intake restrictor, was fastest JUNIOR COMBAT with 100 mph for 54 laps and quick pitstops, OPEN COMBAT I he first round and repercharge eliminated whereas Caux’s model was slower but getting This event with 31 entries was the last the weakest of the 18 starters. The eventual over 70 laps. In the end it was Wilson first control line event of the Nationals. There winner Bill East lost his heat and won the in the time of 7 : 17, Caux second with 8 : 36 were some fiery heats. One of the best was repercharge. After the second round eight and Young third in 9 : 10. May did not between Adrian dc Vos and Sandy Stowe, in finish. which Adrian took three cuts olT Sandy’s remained. White, Ikin, May, Turral. Willing. streamer and most of her string, forcing her East. Chapman and Arthur. In the third model to the ground and finally came down round White flying an Enya 15D powered ADVERTISER TROPHY FOR CLASS II intact when Sandy threatened to get her “Vishus” flying wing defeated Ikin after a TEAM RACE “Vishus” collision. Turral defeated May in a The line up for the Advertiser trophy reserve model out. John Hughes had an hard fought heat during which Turral stacked consisted of only S. Young, Victoria; G. May, F.A.I. Combat model. Junior Satan, going «ml May lo st half a wing. Bill East defeated rather fast with OS Max III 35 and fought New South Wales aad I Bmiow, South through to the final. The May boys had big the tiny Warren Willing after both had Australia as there were no entries from Foxes going well too. but were eliminated stacked due to a line tangle and Willing Queensland, Western Australia or Tasmania. somewhere along the line. pranged his reserve. David Arthur flying an Simon Young made no mistakes in this race The Combat finals are usually the most ETA 15 powered wing scored a win over and won in a time of 8 : 3 with May second disappointing of any of the rounds, as by the Glen Chapman. and Bristow third. time they have battered their way this far, Then to the semi-finals. Turral won his most of the models arc in no fit condition to duel with White. East won his semi-final with JUNIOR AND SENIOR STUNT fly. Last year's winner, Stewart Sherlock, was a good cut against Arthur. In the final East The first round started in calm, sunny matched with John Hughes in the final, but won with a cut against Turral who was forced weather. Ross Murphy was one of the lucky Stewart’s plane was a complete wreck; the to fly a model which was lacking half a wing. ones who flew before the wind started to Super Tigrc 40 was about the only part In the fly-off between White and Arthur to blow, and he came up with the highest score functioning normally. The wreck obviously decide third place, models were up and down of the round. The wind built up to such all over the place with the result that Arthur strength after lunch that several competitors would not fly so Hughes won on air time. won on air time. withdrew from the round rather than risk CHAMPIONS F.A.I. COMBAT smashing their models. Defending cham­ Tom Prosser deservedly became Senior Despite perfect conditions (except for heat, pion Ken Taylor flew in the wind and flew Champion of Champions and Carl Inglcfingcr dust and flies) the standard of flying was not well but missed out on a couple of stunts at Junior Champion of Champions. The good. The contrast between the tew really the end of the pattern for a mediocre score. "Acromodcllcr" shield for the state winning good fliers and everybody else was not a Ken Taylor flew his big Fox 59 powered the most points was won by N.S.W. joke. Whilst wings and derivations thereof stuntcr in fine fashion and top scored in Nationals always bting forth criticisms both dominated numerically a 36 in. span light- round two. Darryl Hartshorne, Ross Murphy and John Hughes lost ground in this round. founded and unfounded, and this Nats was John Tresslcr had two good flights on board, no exception, however, as long as the true and stood a good chance of winning Junior spirit of Acromodclling and its camaraderie unless Johnny Hughes had a good third prevail, these complaints arc eventually lost round and the Senior section was still wide in the smell of dope and fuel. Doug Murray open. and John Lewis drove almost non-stop from In round 3 Ken Taylor flew well and again Perth to attend the Nats.—round trip topped the round. Daryl Hartshorne with his distance of 4,400 miles. Many modellers Angclique also flew well and obtained a travelled over 1,500 miles to attend. Everyone score big enough when added to his first had a good time and will be back next year round score to beat Taylor’s best two scores. for more in Sunny South Australia, (with yet Ross Murphy's nerves were getting the better more A PS designs ?— Ed.) of him by this time, but he flew his Shark well enough to ensure at least third placing. John Hughes turned in a magnificicnt flight for a junior with his own design Rebel which was a bit too good for John Tresslcr. Glen Chupman knocked up a decent score in the last round to place third in the Junior section.

Left, Brian Eather, winner of F.A.I. Team Race likes his planes like he likes his cars, Fasti (Lotus Elan). Right, Sean O’Connor putting turns on his immaculate Wakefield model. Aero Modeller 404 Basic Aero Modelling PART SIX (Concluded) The traditional hand drill is an inditpensible tool for winding rubber motors. Here, Swedish Lennart Rubber Motors Flodstrom is about to stretch wind his Wakefield motor prior to coming 4th in the ’6S World Champs. ‘ Oreaking in’ is something that is very necessary with that it cannot pull out of the chuck, in addition to the ■·* new rubber as, initially, it willnot take anything like chuck being tightened as hard as possible. Another use­ maxi mum turns without braking. Thus a new motor ful tip is that the diameter of the winding hook should be needs winding to about half maximum turns and then of an easy shape to disengage from the propeller shaft and allowing to unwind; repeating winding and unwinding at the propeller shaft loop o f small diameter very litte larger about 60, 70 and 80 per cent maximum turns. The motor in size than the wire diameter of the winder hook. Fig. 28. will then be reasonably “broken in’ and can be wound to This will stop the propeller loop trying to climb around approaching maximum turns from then on. During the the winder hook when winding. process of breaking in it will also have stretched about Λ rubber motor is always stressed less if stretch wound 10 per cent in length, taking up what is known as the —and for putting on about 70 per cent maximum turns or ‘permanent set*. more, stretch winding is essential. The technique is quite For sports flying, motors should never be wound to simple. After engaging the winder move backwards to more than 80 to 85 per cent maximum turns, when a stretch the motor to about three times its normal length. consistent performance should be obtained over a About one half to two thirds turns can be applied in this reasonably long period. For contest work, however, it position, advancing towards the model as the remaining may be necessary to approach maximum turns on each turns are applied. Judge the rate at which you take off winding. In such cases the ‘maximum turns’ figure the stretch so that you have advanced right up to the {Table X X lll June Issue) can be taken only as a rough nose of the fuselage as the last turns arc applied. guide. The actual breaking turns can only be established The initial ‘stretch’ is a little easier—and there is less by testing a specimen motor of that size (and rubber type) strain on the rear anchorage—if turns are applied when to destruction. moving out to the stretch position. This is particularly There is also the point that when a motor is wound to true if more than the ‘3 times' stretch is attempted. Some near maximum turns it will suffer a marked loss in modellers use a 5 or even 6 times stretch when winding performance after only a few windings. Some contest as they feel they can get more turns on this way. This is flyers may even change a rubber motor for each flight, only for contest flying, and not always necessary then. It is although good rubber should stand up to at least three largely a matter of individual technique, and the amount ‘maximum turn’ windings without loss of performance. of stretch you feel happiest with. It w'ill not be suitable as a ‘contest’ motor afterwards, A major problem with long motors is ‘bunching’. There however. is also the ever-present problem with all rubber motors Winding itself demands a special technique. Besides of the ends tiring to climb around any conventional hook being quicker it is also a more efficient way of winding to shape to which they are attached. The real answer is to use a winder, the usual type being a hand drill with a avoid hook shapes as anchorages, and it was for this hook inserted in the chuck. The hook should be so shaped purpose the bobbin was devised. Detail of Frenchman Jacques Valery's conversion of plastic Basically, a bobbin is simply a spool (preferably in spinner for power models on a Wakefield design also showing plastic) over which each end of the motor is looped and his non-bunch hook with plastic tube covering. Prop hub is the motor then bound close up to the bobbin with a rubber fabricated from wire. ; PROPELLER DIAMETER IN INCHE! chored by a dowel through the centre of the bobbin. At At bobbin. the of centre the through dowel a by chored portant utbe hp t rti te obn Ti sae is shape This a bobbin. into bent the be retain to has to shaft shape propeller suitable the end front the small motors they can be omitted and the dowel simply dowel the and omitted be can they motors small band— xeto. hs ste‘’ho,son in shown ‘S’ hook, isthe This exception. hf wr daee. t a py teeoe t pu the plug of Ravvlplug.length split short a to therefore, pay, may It diameter. wire shaft centre the the that fact example, the by for aggravated is wide, possibility This too is bend the If accurately. as soon as you start winding. as you start soon as rubber the way wrong the bent is ‘S’ hook the If action. twisting own its under hook the with itself centrally align way. right proof the bunch 16bent positively is in it especially accurately, but wire, swg and neatly bend to difficult nibnh itn a te rple ed bt o always not but to necessary, even end, or desirable, propeller issometimes goodIt desirable. the a also at are fitting They loops. anti-bunch rubber the through passed imtr s vn etr n mr drbe I may, It durable. more and ‘S’slid a over small hook. better small even suitable of is tubing fuel Plastic diameter hook. the onto valveslid Bicycle sleeving. with covered be always should one with bunching, against proof is variations similar hole of the front bobbin to fit the shaft snugly—e.g.with shaft fit the the to bobbin than front larger the of hole much invariably is bobbin the of hole hook. the the sideof around climb to be able may bobbin oo 'l ipycibofteed fteho almost hook the of ends the w'illoff climb simply motor use hook. a the anchorage here is usually a dowel pushed through the through pushed dowel a is usually here anchorage the in shown as wire, the bind is this to preventing of best method The winding. out straighten cannot this that sure make motor, rubber mended, and easier to to do. easier and mended, rubber tubing used to be the standard ‘sleeving’ material, standard the be to used tubing rubber fuselage sides—but do use a strong enough material for material enough strong a use do sides—but fuselage during or fuse with hook or fitting wound, shaft whenpropeller the of ‘open’ end rubber the of pull the under hn idn wt a ubr ad a smtms recom­ sometimes as band, rubber a with binding than oee, ed o e amd o otn eoe t a be can it before soften to warmed be to need however, This does not apply at the rear end of the motor since motor the of end rear the at apply not does This Where wire hooks are used in contact with rubber they rubber with incontact used are hooks wire Where and diamond circular, shape- hook wire bent No with but fitting; anchorage rear ideal an are Bobbins Finally, whatever type of w'ire hook is used to anchor a anchor w'ire to isused of type hook whatever Finally, for the bends must fit the bobbin snugly and and snugly bobbin the fit must bends the for i. 29. Fig. 25 SECOND 25 h ra ed f h mtr s hn an­ then is motor the of end rear The 30 SECONDS 30 Figs. 29 and 30. and 29 Figs. TOTAL BLADE AP.EA SQUARE IN INCHES The motor will then automatically automatically then will motor The 35 SECONDS' 35 0 SECONDS 0 This is more reliable reliable more is This Fig.30. rvddi is it provided TIMEBY FOR 16 STRANDS 16 FOR This is This ESTIMATED PROPELLER I RUN 14 STRANDS 1/4 - 40 GRAMS' 40 - STRANDS14 1/4 1966 WAKEFIELD 0.77 im­ j±f ± j 405

MULTIPLY· over stretching and prolonging the ‘stretch’ too long; but but long; ‘stretch’ too the prolonging and stretching over be to likely only is fault of sort This itself. clear cannot really a If consequence. a as spoilt eventually be will may performance bunching of type theflight but to unwind, itself continues This clear as motor the trim. upset can develop in a long motor when it is it when motor long a in develop long with especially trim, upset and middle the in occur than rather bamboo dowel. hardwood ordinary an tough really preferably dowel, the stretching enough. stretching without turns maximum near attempting occur also it can iscause usual The technique. winding the poor by fuselage produced section small a it just fuselagethat the in in so become may jammed rubber develops bunch bad xesvl lbiae) I ti rpe o tegon it ground the on dropped is it If excessively lubricated). wellnot lubricated (but it Keep clean and straightforward. hn aig o oe n o rpdy Bnhn cn also can and Bunching winding rapidly. stretch too in when come to turns having many then too still on can putting bunching technique— winding but poor by becaused can This motor, motors. the of ends the at ing motors, are best stored in a cool, dark place. dark cool, ina best stored are motors, grit. up picked have certainly almost will it as again, isusedit before re-lubricating and drying washing, needs eeo a ot f rpl’ rsue atr, lhuh in although pattern, effect.harmful haveany to appear pressure this fact does not ‘ripple’ of may sort strip a the develop not, If them. need you when again re-cord first without them and uncord weeks ‘corded’ to three it is or advisable two them leave even can You container. this will cause deterioration. Rubber, and made-up made-up and Rubber, deterioration. cause will this excessive asor heat sunlight direct of out rubber all Keep harm, although if they are to stand idle for more than than more for suitable idle a stand in to are arc they if they although as harm, them keep Just use. in not ‘dry’ whenstoring and washing off lubricant the want not Proper fixings— bobbins or ‘S’ hooks- prevent bunch­ prevent fixings— ‘S’Proper hooks- or bobbins Contraryto popular belief,made-up rubbermotors do and logical fairly is motor rubber made-up a of Care assuming a 22 in. diameter, P.D ol 1.0 and a blade blade a 1.0and ol P.D diameter, in. 22 a assuming ratios diameter pitch 40x β 1 ol weighing and 14strands lor run motor area against blade diameter, niae. nraig h ae t 3 s. n. will ins. sq. 30 to ol time area run the the alter only Increasing indicated. is of run 25 seconds estimated an of Ins. area 21.5 sq. ‘Inter· of area permission by reproduced Is It grams. checked out and agree with the findings. the with agree bee and also have out checked propollers of could number a quite maximum Isplot theroretlcal, the 10%. Although say, to absolute up run the tho increase fo Winding y . rant G J. by nationalist', Canada. Note that changes in blade blade in changes that Note Canada. nationalist', O 4 GRAM MOT S R TO O M M A R G 40 FOR M O TO R RUN RECKONER RECKONER RUN R TO O M Tho graph presents a cross plot of propeller propeller of plot cross a presents graph Tho will 5x3\/ “ 2*11 — 1.12 25* “ — / 253 x \ vary tho times only slightly. For example, example, For slightly. only times tho vary 21.5 v unwinding uy 1966 July, 8 2 , and again again and , seconds seconds Aero Modeller 406 GOLDEN WINGS CLUB PAGE

To join, fill in the handy membership coupon and will receive his own badge—depicting ‘GoldenWings send with a postal order/money order, or cheque to a membership card, and two transfers to decorate hi the value of 2/6d. made payable to "Aeromodeller. model or model box, and will make him a member o Post to Golden Wings Club, Aeromodeller, 13-35, the largest modelling club of all time. Bridge Street, Hemel Hempstead, Herts. Each member John Bridge

TIP OF THE MONTH . Dear John Bridge. I am between 10 and 16 years of age and would FVFR HAD TROUBLE WITH | like to become a member of the “Golden Wings •NEEDLE- r I Club”. With this application I enclose postal order, v a l v e s : : : ' : ^ W Z T . (International Money Order) for 2/od. to cover ::v ib r a t in g /< ’ 13 _ T \ I cost of the badge, transfers and membership card. >OFFTHE x 'r' ;·κ ink. >St IT ING?. I NAME IN FULL ...... j ADDRESS ......

SMOOTH ΐ Ρ Κ .SMOOTH FUFL r-IO.V | YEAR OF BIRTH...... SCHOOI...... I NAME OF ANY OTHER CLUB OR CLUBS TO I WHICH I BELONG (if any) ...... I SEND TO:- GOLDEN WINGS CLUB AEROMODELLER, 13-35, BRIDGE STREET. HEMEL HEMPSTEAD. HERTS.

We have all had needle valves vibrating loose or moving of their correct setting at some time or another. This month Colin Simpson, of Reading. Berkshire, comes up with a tip for n>P,ecf£n : OF rubber: curing this problem. With the help of a pin, push a length of BAND' - rubber band into the needle valve body. Then screw tho needle valve back into the spraybar assembly, this should lock it and koep it fixed in the position you set it too. Another quick tip, keep ^r.;REPLACC NEEDLE· the fuel lino froo from kinks as this can often stop the supply •VALVE O N TO ^^p SPRAYBAR of fuel to the engine, also avoid taking the fuel line loo near the cylinder head as this can melt tho neoprene and also step the engine running.

Dear Sir, Pen Pals Wanted ounce of lead on the starboard wing, As I am a beginner to control line P. Curran. Oldleighlin, Carlow, Eire, when I did this I found that the starboard flying I would like to know what aircraft age 14. would like to correspond with a Wing was too heavy when I put my finger would be most suitable for me. I wish to pen pal in England. P. Simek, Nadrazni on the balancing point. Should I add just buy a 1 c.c. diesel and I would like to 220, Svetla nad Sazavou, okr. Havlickuv enough lead to mako the wings level or know which ongine to buy. I want to use Brod. CSR, Czechoslovakia, would like should I put the ounce of lead on the this engine for a second ai rcraft. to exchange magazines and books deal­ wing tip? Hilton. Aberdeen. Michael Deans. ing with all forms of flying with an English Glasgow. S.4. A. Davidson. Our most suitable control line trainer for model flier. H. Cuypers, Bouwelsestw 50. The ballast weight specified is correct. It 1cc engines is Bouncer, plan CL/808 price Herenthout, Antwerpen, Belgium, would should be sufficient to balance the weight 3l6d. With 24 in. wingspan its handy size like to correspond on free fliQht and of the lines and additionally helps to keep takes 1-1.5 cc. engines, diesel or glow plug. control line. J. B. Gorse, 31, Thornlcy St., the lines in tension during flight by centri­ Full instructions arc included on the plan Wolverhampton, Staffs, would like a pen fugal effect. It w ill have the same value for construction, and details of Rigidrist are pal in the U.S.A. or Canada, agod 15, whether the model is upright or inverted included. This is a control line handle that who would correspond on aviation and should not be reduced to less than keeps the forearm rigid and teaches correct matters. that advised on the drawing. pilot technique. This Is easy to construct and should set you onto the path of success­ Dear Sir, ful control line flying. All o f the following I enclose a picture of my K e ilK ra fl Dear Sir, engines arc suitable for BouncerAM 10, " Snipe", which is powered by a Cox Recently I have lost two of my free Frog 100, Μ . E. Heron, FOK 10, and D C. "Babe Bee” . As yet this model is unflown. flight models by using an oversize tank Quickstart Spitfire, these are all diesels and I hope to fly this model at R.A.F. Llnd- that gave a long engine run. Can you tell readily available at your local model shop. holme, where my father flies the Varsity me the best way of getting the models T1. for Bomber Command. Ho also usod back. to bo an aeromodeller many years ago. Stockport, Cheshire. F.A.T. Day. Well the answer is to use a smaller tank Dunsville,' Yorkshire. N . Brooke. then you won’t lose the models, alterna­ Snip* fihdld at left tively you can use a fuel supply cul-out. To locate your lost model visit all the local Dear Sir, police stations in the area leaving your A t the moment I am building my first name and address with a description of the modol, a Mamba. I am now at the finish­ model. Also you can place a small ad­ ing stage. The plan tells me to put an vertisement In your local newspaper. John O’Donnell covers the contest scene and offers his viewpoint on Free Flight

HE contest season is now well under way and even I cannot separate event. Pete Trenchard distinguished himself by Tmanage to attond everything—much as I would like. One event recording a treble in each glider event, and then going on to win that I missed was the Southern Area’s free-fligh t gala at one flyoff. Bruce Edwards won the other with almost the same Beaulieu on 24th April. Dave Welch sent mo a report, results score. I cannot say much about the glider flyoffs as they were and photos. The weather was hardly inspiring with a gusty wind held after the rubber one and I was "downwind” . From the and occasional drizzle. This resulted in a rather low entry with scores it is quite obvious that no-one found a fourth thermal. main interest being in the two glider events. Despite the use of Porhaps surprisingly the power event was a N.W. Area clean­ a 21 minutes max. only open glider needed a flyoff. A l Wisher up, with Russell Pears recording the only treble flying an Enya and Dave Glue flew off first in sink, leaving Jim Baguley to 19 powered version of my “ Pendleton Fault" design. I managed follow with a four minute O.O.S. flight. Jim appears to have second place with tho same design but with Veco 19 power. reverted to his stick fuselage typo of design—but now featuring Thermal spotting helped compensate for an unexpectedly tight sheet top wings. power pattern, presumably due to heat warps. Joe Savini A 1 glider and open power were won by local fliers Bert filled third place with an FAI model, just ahead of George French Turner and 12 years old Ed. Warwick. Rubber was very badly and his “ Ramrod 750". supported with Barry Hyde (late of Sharston, Manchester and Chuck glider (or should I call it “ Outdoor Hand Launch Glider" now with Torbay) winning through persevering with a reserve in view of the result?) was won by American visitor Bob Hat- model. Jack Allen flew his Coupe d’ Hiver model in open rubber schek with a model borrowed from Reg Lennox, who promptly and thereby illustrated just how low were scores. lost it himself when he got it back. Bob was in England for a The A irtech M.F.C. rally, held on their firm's private airfield brief business trip and practically everyone he met told him how at Haddenham. just one week later had very different weather untypical was the weather I and hence lots of entries. Brilliant sun and little wind in the The third of the season's area-centralised meetings was morning seemed too good to last—but the sun shone all day held on 15th May and if the rest of the country had the same and the brooze never became very strong. Lift was peltiful and weather as the north scores should be high. It was dead calm at niaxs commonplace. In short, an ideal day for high scores. the N.W. venue (Chetwynd) and there was talk of 20 minute test Rubber had around a dozen trebles and was flown off in lift. flights landing in the field. Few trebles were scored, evon This rather made it a timekeoper contest especially as only ono though there were area open events staged. per flier was employed. As the flyoff is the really important I flew with the Northern Area at Topcliffe where it was sunny flight it is the one where the second timer is most necessary. all day although a little breezy in tho afternoon. The Weston Top places (Bob Wells, Bob Bailey and Ray Monks) seemed to Cup was the first real tryout for most people, including myself, have been won through using relatively short D/Ts. Certainly with 40 gram Wakefields. Practically all those seen were old 50 duration and/or distance travelled bore no resemblance to the gram models with the motor pegs moved forward. flyoff score. Lou Burrows was probably the most unfortunate Whatever may be said about the rubber reduction it has with a time of 4 : 45 and a very long walk due to using a 10 min­ certainly reduced the models capabilities to below the max. ute D.T. I went even further—but at least there was a rumour My model was doing 2:40 late the Thursday eve before the that someone had seen my model for 10 minutes. This was a contest—just 80% of what I used to expect from it on 50 grams. new model with every visibility aid; large black fuselage, fluores­ But even this meant absolute max turns! cent wing tip panels, and "Melinex" reflectors. Tactical flying, or at least a definite attempt to launch into lift The glider enthusiasts were well satisfied when they dis­ will become standard practice just as it is with glider, but covered that there were tw o glider events scheduled. Airtech without the latter’s advantage of positive feel on the line before have acquired a "Challenge Shield'' to be rotated round the release. Results are liable to be very good or very poor. There f/f events, commencing this year with glider—and flown as'^a were certainly plenty of maxs recorded at Topcliffe and also plenty of 80-90 second scores. Top scores there were in the 12* Ed. Warwick, of Lee Bees, minute region, best being Tom Stoker. winner at Chobham Easter "double chance” Pete Although Topcliffe power scores were low (i.e. below trebles) gliders that made 6 results were better in the N.A. open events, where George maxes at Haddenham. Tidswell recorded a 9:20 rubber flyoff—D/T’d in sight to land only two fields outsido tho 'drome. There was also a very useful 4:27 flyoff recorded in the Frog Junior by Pete White- head who prefers Graham Frooston’s “ Ganymede 2" design to the usual York club layout. Mentions of area contests would be incomplete without comment on scores absent from recent results. Montion was made last month of Southern area scores missing from the 27th March results. Now the results from the April mooting have appeared “ sans” the Northern Area's contributions. The straightforward and obvious explanation is unfortunately correct—the results were sent in late (due to their comp. Sec­ retary getting someone else to post his mail). Thero has been much argument and one resignation slnco. Although the rules are clear enough and the necessity for Continued on page 408 NORDIC FREE FLIGHT CHAMPIONSHIP by H . D ahl AS in 1962 when Norway were hosts for the Nordic Champs, this contest was held at Lillcsirom some 20 miles east of Oslo on March 13. Finland and Sweden each fielded full teams, Denmark were short of one A/2 man and two power flyers and Norway missed one power flyer. The temperature was about 15 degrees centigrade below zero, and wind caused quite turbulent air. (At least to Norwegian standards.—The Danes called it almost dead calm!) In Glider the first round saw only two maxes. One each for Wcstin (Sweden) and Skard (Norway). In the second round. Wcstin still held the lead, but Skard dropped to 7th with only 88 sec. After the third round Denmark, and Norway had a man with a the Finns Hieumen and Tahkapaa were in perfect score after the 5th round. top places. Hietanen dropped to 6th in the The 4 min. round still left young Skjulstad fourth round making a place for Kongstcdt, of Norway and long time specialist Nien- (Denmark) in second position behind staedt of Denmark in the running. The Dane TShkapaa. In the last round Tahkapaa used his ‘Mille’ with short motor run and a dropped to 6th with 116 seconds making very rapid climb, while Skjulstad had a Kongstcdt the winner. Last year's winner longer and more docile motor-run. In the WahTund and Wcstin secured second and 7th round they launched simultaneously the third places for Sweden and also the best Dane having an edge in the climb, which team score. however was more than made up by the Rubber was to be a game of avoiding Norwegian models better glide. Denmark downdraughts. It seemed that most of the made the best score as a team. models were capable of a maximum in still In Power maxes were also the order of the air. The Swedes with " Termik-Johan" (Rune day. Uulukin (Norway) had lost his best Johansson) from the victorious team at model earlier in the winter and crashed his Kauhava, Anders Hakanson (Nordic Champ better model early in round I. Sverdrup 1964. 1965) and RagncrAhman who had the (Norway) and Raulio (Finland) also crashed. most beautiful Wakefields on the field, all Highest climbers were Urban Nygren missed the fly-off. Ί hus one each of Finland, (Sweden) with a very big model and Mikko Sulkala (Finland) with a quite small design. Above, Wakefield winner Skjulstad Above right the famous Swedish Wake­ The Super Tigre G-15 was the usual power (Norway) retrieve* on slkis. Victorious field specialist ’•Thermik" Johansson with plant although 2nd man Steen Agncr Swedish power team, Hagel, Wall & his latest and most beautiful model, was (Denmark) used Cox Special. In the fly-off Nygen on the frozen lake below,— what unluckily down-draughted— shows it can Nygren made 4 min. with ease. Unfortunate a superb flying areal Nice to look at in happen to the bestl Sulkala had an overrun to ruin his chances. mid summer! Altogether the Swedes made the best score to take home the beautiful silver cup.

Results:- GLIDER, 1. K. Hansen (Denmark) 848; 2. A. Wahlund (Sweden) 833 : 3. B. Wcstin (Sweden) 831; 4. K. Bentzen (Nor­ way) 800; 5. A. Hietanen (Finland) 793; 6. M. Tahkapaa (Finland) 786. TEAM RESULTS, 1 Sweden, 2. Finland, 3. Norway, 4. Denmark. RUBBER, 1. P. T. Skjulstad (Norway) 900 +240 - 223; 2. E. Nienstadt (Denmark) 900+2404 201; 3. P. Ella (Finland) 900+249; 4. P. Rasmussen (Denmark) 894; 5. E. Jorgensen (Norway) 885; 6. A. Hakanson (Sweden) 877. TEAM RESULTS, 1. Denmark. 2. Sweden, 3. Finland, 4. Norway. POWER, 1. U. Nygren (Sweden) 900 + 240; 2. S. Agner (Denmark) 900 + 231; 3. S. Haapalainen (Finland) 900 + 168 ; 4. M. Sulkala (Finland) 900; 5. R. Hagel (Sweden) 890; 6. B. Wall (Sweden) 887. TEAM RESULTS, 1. Sweden, 2. Finland, 3. Norway, 4. Denmark. TOTAL SCORE: 1. Sweden, 2. Finland, 3. Norway, 4. Denmark.

won the 5 cc. with an Hta .29 by recording 124.9 rn.p.h. Ray Hall-Rossey Speed Meeting Gibbs (Southend), with a Carter, won the open 2.5 cc. at ELD on May 15th at the Hayes Control Line Circle, thi·; 111.8 rn.p.h., and Bill Bessant (Southampton) 1.5 cc. at 94.5 H event was for 4 classes of speed and 3 team races. The rn.p.h. sprint (where the pit men raced from the centre of the circle out to the models at the start of the 10 lap race) was held for Free Flight Comment from P.407 $A. F.A I and B team racers Whipping was allowed and this results to be collatod quickly following the event is self-appa­ seemed to be adding up to· 10 rn.p.h. to airspeeds. jA with 8 entries had the fastest heat go to Smith/Brown (Felliam) at rent, there is one very important factor. Disallowing these 30.9 secs, with the eventual victor being Batch/King (Fcltharn/ results means that ontrants (including those with highest Hayes) at 34 sees. A. Pollard, from the same club, came scores) are being disqualified for something that not only is second with 38.2 sees, and G. Hartnett (Chingford) third with not their responsibility but that they are not allow ed to do. 40.4. F’.A.I. sprint had 9 entries and Ray Gibbs (.Southend) The final outcome may ho In doubt—especially as precedent flew a glow Carter 15 powered model which, though fastest in is of no help. Late results have been allowod (event after initial the air was a poor starter. F. Bradley recorded the fastest heat with 32 secs. In the close final Bradley (Fcltham/Hayes) with rejection) in the past, and they have also been refused. When it 32.6 secs, only just beat R. Gibbs (33 secs.), for first place. happened in the N.W. years ago the then Area Comp. Sec. B. I.angw'orth (West Essex) placed third with 34.2. Class B found he had cost himself a National contest. This certainly only had 4 entries, so the final was the whole event. Balch/ appeased the rest of the entry! King won with 39.2 sees, followed bv M Atwell (Chingford» Another complication is the fact that some of these scores with 44.7. Alan Dell (Fcltham Hayes) placed third with 46.5 count towards the National Championship and Plugge Cup. secs. The speed contest attracted less support and speeds, and were slow in all classes except 10 cc. where Ivor Roffey Logically the Championships are contests with closing dates (Brixton) made 162.1 rn.p.h., and this with a shattered pro­ just the same as the separate events. But I’m rather glad I don’t peller for three of the recorded laps after ‘‘bouncing” it and have to decide this question—logic and sentiment never mix not damaging the Carter Dooling .61. B. Fairbank (Sheffield) well! 409 July, 1966

SECOND BURTON WOOD CLUB CONTROL LINE CRITERIUM This, (hu second N.Western Area (N. Sheffield) 15 cc. at S2.2 m.p.h. (83.6 ‘Critcrium’ for control line models only, per cent). D. Sewell (Whitefield) won the AND was us usual a well run affair hut lacked A Combat after a teflight caused by a support from the London clubs who had detached streamer and J Fotheringham the a rival control line attraction on their larger engine capacity Class It Combat. doorstep at Imperial College, duplicating In all a good rally marred slightly by the several events. Stunt was wo-n by Jim early wet weather conditions. CONIESI Mannall (1 incoln) followed by Tom Jolley (Whitcficld). Novice Stunt was lopped by C. W. Draper (Gee Dee) and P. NOT ALL Simmonds (Wolves) topped the Scale 1 NEWS with a 1912 Blackburn Monoplane, j/t Team Racing Team Race was flown 'in a hangar' to ; avoid the wet weather. This made engine As contest modellers well know Wharfe- settings practically impossible to establish dale and D.M.A.C. excell themselves with Leadout News with so much noise reflection from the their own speciality of winning team races From the Hunts M.A.C. news-sheet "Lead- walls. The final saw Royal/Salmon and international team race events via Dick (Shrewsbury) win at 9.45 over Davy/ out" we learn o f some interesting team race Place and Don Haworth. However, they do developments. To most team race crews this Hudson (Wharfedalc) at 10.3 with Place,1 have many other club interests with radio Hayworth (Wharfedalc) coming third. will be quite a jolt, to quote:—44No oil in control now the largest. Interest is split 50/50 fuel could become a reality. Brian T u rn er- h'.A.I. Team Race in general had slow j with single channel and multi and two mem­ after seizing a couple of Eta shafts, tried a heat times and a fated final that required ! bers have just completed home-made separate oil tank containing Redex and three starts! (the judge was heard to ask 1 4Digitrio’ proportional sets. On May 1st a pressurised this from a backplate tapping for more co-operation from the pilots as flying session was held with a Sheffield Club. he wanted to go home!). All flying Eta i into the front housing between the races. The With perfect weather an open spot landing oil being metered by a modified spraybar powered racers, the finalists were Booth/ contest was held with entries ranging from a assembly. Brian used standard fuel but if one Taylor (Rolls Roycc). Place'Haworth single channel 4Half Tone' to a Kraft pro­ could lubricate the big und little end hearings (Wharfedalc) and Franklin/Ives (Wan· portional equipped 'Taurus'. G. Kirk (Wharfe in the same way then the whole lOcc’s of stead). After a good start, at the first dale) took top spot flying the 'H alf Tone,' with stop Place had to hold off landing to fuel allowed in F.A.I. team racing could he T. W. Kirk second. Sheffield made third with power producing paraflin and ether". This miss Booth taking off. Franklin then L. Frctwcll flying the proportional 'Taurus'. system sounds feasible but it should be took off and found Place's model sitting The control line section has fixed the date for remembered that some oil will be needed in on top of his for a few segments. Start | the maialhon team race events, i.c. 1000 lap present team race diesels to give a good com­ again, this time Booth raised his model team races and these are Sept. 1 Ith and Nov. pression seal for quick starting. Also the at a pit stop and Franklin's model went 6th, for F.A.I. and Class B respectively. underneath it tangling all the lines up. F.A.I. definition o f fuel tank and indeed the Start yet again, this time things went definition of fuel would have to be studied smoothly with Place and Franklin at ; Finchley Control Line Gala very carefully to make sure the present rules equal speeds but Franklin a few laps are not violated. down in range forcing him to make a The perfect weather conditions of May 1st stop in the late 190 laps. Place won with attracted a large entry to the Finchley 9:45. Franklin next at 9:53. and Booth Control Line Gala, held at Glebe Lands with Feltham News retired ill 103 lap?'. Rat Racing was two classes of Stunt and Combat. Lnl'or- rather noisy to say the least and Tom tunatclv the flying was not up to the best of Mainly a control line club, with a very Jolley with team-mate D Duy had a standards in Class A Combat, Stoo Holand good record of turning junior members into comfortable win at 8:25 whilst both of (Northwood) was going well but lost to competent contest fliers. Feltham D.M.A.C. the other finalists retired. If Team Race Pete Smith (Outlaws) in the semi-final. also have glider and radio control interests. was also won by Wharfedalc Davy/ Richard Wilkens (Sidcup) fought his way Some members have obtained the new ‘Super Hudson with a very vintage 1000 lap through the rounds and narrowly beat B. Tigre 40' Rat Race engines with rear rotary- race model that had seen better days. Mills (Maidenhead) in the semi-final. The valve induction and these are hoped to hold Heaton/Ross placed second with I,auric/ tinalbctwccn PeteSmithand Richard Wilkens the club name at the top in Rat Racing. The Wallace retiring for third place. ! was an anti-climax with Smith beating team race bods arc busy sorting out models Handicap Speed where all the classes arc Wilkens unconvincingly. Class If Combat and motors for the Nationals with some flown as one and the winner is attracted 22 entries and had more action than combat types trying Super Tigre GI5's for established by the highest percentage the ‘A’, with most of the entries from Felt- Combat after the success of Richard Wilkens score of the National record for the class I ham/ilaves, so it's no wonder that J. Ledger G20 powered model, it is hoped they will be ol model flown, was won by Ivor Rortcy and A. Dell from Felthant Hayes took first seen at the Nationals, but other members (Buxton) 10 cc. at 158.7 m.p.h. and second places respectively. Senior Stunt still stand by their trusty Oliver Tigres. (94.2 per cent), followed by J. Hall was topped by Jim Manncl (Lincoln) with Club meetings are held on Tuesday evenings (West Essex) 5 cc. at 131.6 m.p.h. Mick Reeves (Wanstcad) coming second. at Cardinal Road School, (Nr. the station), (85.6 per cent). Third were Parkcr/Allard I Junior Stunt was topped by T. Lambert. Feltham, starting at 7.30 p.m. Below, F.A.I. T /R cowling is in fact the crankcase of engine! Solid block of alloy machined out to take Oliver Tiger parts, note stub exhaust tubes, by A. Kerswell (Novocastria) seen at Burtonwood. Extreme right, Ivor Roffey with mono line Carter Dooling 61 speed model prio r to 162.1 m.p.h. flight at Hayes. Centre top, Dave Balch w ith winning 4A and B T/Racers at Hall.Roffey Meeting. Below, 1912 Blackburn Mono won Burtonwood scale fo r P. Simmonds w ith McCoy .19. Aero Modeller 410

MODELS ST. ALBANS CONTEST NEWS FOUND The St. Albans M.A.C. have started this season with a promising contest record. At the 20589941 Set. Baines. A.M.Q., R A F. East Grinstcad Gala Bruce Rowe and Dave Tipper took first places in Open Rubber and Cattcrick, Yorks, reports the location of two Coupe d'llivcr with George Fuller nnH Rrinn Dyke third in power an d open glider. A goodly lost models. Firstly a red ‘ Dixielander’ ty p e selection o f wins were also collected at the 'South o f England Gala' through a mass club entry power model in the tree tops 6 miles N.W . of and Don Edwards won the Halfax Trophy for F.A.I. Power at the S.M .A .E. A pril 17th contest. R.A .F. Topcliflc. Contact village policeman U n f o r t u n a t e l y n o h o n o u r s w e re w o n a t Haddenhani)p\tn though they were there in force s.oite of Kirklington, Nr Thirsk, Yorks. Front W ales the junior members were doing just as well as the well known seniors in this event. For the a red coloured power model approx 40* summer the club hopes to hold Thursday night contests at Nomanstand Common f o r c l u b wingspan, with Μ. E. Snipe., letters A.A.O. members, these are to include A /l, Chuck G lider. Coupe d’llivcr and a Scramble. Also don't on wings, contact Mrs. Holder, I), King forget the St. Albans Gala on June 26th, at Chobham Common, not June 5th as stated last m onth Street. Abergavenny, M onmouthshire. in ‘Events This M onth’. FAIR LOP AGAIN Te le v is io n Things have been pretty active in the W anstcad area recently with plenty of contest flying and club meetings. Places have been gained in Scale. Team Racing, Stunt and Junior Stunt already this season. Dave Platt has well and truly test flown his 'T.28' Nationals scale Demonstration entry with retracting undercarriage and at the other end of the scale, Roy Cam pbell is entering a single channel 'Luton Minor’ againtt the full m ulti m odels for N ationals honours. Pete Ball Border M .F.C. and Earlston Youth Club is busy constructing a 'Boeing F4.B4' with a McCoy -60 and Bill Forrester a 'Bristol Fighter’, arc arranging a model flying display to take both of these being for the Control Line Team Trials. S. Cam pbell should have bad an ‘Avro pla.con Sunday July lOthat Huntshaw Farm , Lancaster' at the N ats and mem bers can't wait to see the rest o f the scale entrants. M ick Reeves F.ailstone. A t present 22 m odels are available is constructing another 'Mew Gull' stuntcr this time fora Merco -61 and the team racing front model clubs in the area but more are team s are going quite well. W anstcad Flats are still being used for flying but, with a byelaw needed, and the "F.dinlnnyh News” has in the background all the tim e, to ban non control line power flying. All the crashes that happen already given the organisers a good write up. to models flown from W anstcad flats (and there are quite a few) have so far been caused by anc "Border T.V.” arc to televise the actual non-club members, and this does not help to keep a flying site. O f interest to older model event. The organisers have also borrowed a fliers, they have received official permission to fly any type of m odel they like at Forest Lane three ton w ater filled roller to flatten the field playing fields. Barkingside. opposite the now closed Fairlop Aerodrome where developments into a condition suitable for model flying. took place in the early days that arc now accepted as standard item s in todaysaerom odclling, Anyone who can help in this display should so if the wind’s in the right direction m odels will fly over Fairlop again after a lapse of many contact; Mr. J. Scott, West High Street, years,— to the gravel diggers. Eailston. Berwickshire. EVENTS THIS MONTH CLUB D IA R Y J u n e 19 Both festival Radio Contro'. R.A.F. Coierne. Nr. Bath, on A4 The response to our request for the dates of local club Scale and Concours d’Eleoance F.A.I. Mu ti Aerobatics, Pylon events, activities, etc., (fiat may interest non club members in Racing N.M.P.R.A. rules. J u n e 19 S M .A .E . Ind o or Team Trials. R.A.F. Cardlngton, Beds. your area, lias been pocr, to say the very least. Club secre­ J u n e 29 Northern A'ca Slope Soscng Meeting Black Hamoleton Hill, taries note, when you send this information to the Aero between Hawnby, Thrisk tnd Northallerton. Fruc Flight hand Modeller office, make sure it has the function's dale and launch. Magnet Steering hand launch and Single Channel venue. Also we can only accept and print functions for the Radio Control t-me Nomination/Spot contest. Details from:— current month of issue. Typical example . . St. Swanks. E. Coates. 37. Knediington Road. Howdcn, Goole. Yorks. J u n e 26 S.M A.E International Control Line Team Trials R.A.F. Swin- M A C.—F'ilm Night—St. Peter’s Church Hall. Brixton. derby. Oftlcla'. pre-entries only. Team Racing, Speed, Aero­ London—June 30th. batics end Scale. V A iA W iA 'A .A ’A iA 'A 1 Λ·ΛιΛ ·Λ.Α'ΛλΑ·Α f «-Α j A·» j ,«·*, | , | Λ—,αΛΆΑΛ'Α A/OVA/lViA/O*. J u n e 26 Madmact Meeting. Pitreavie Nr. Dunfermline. Combat and Team Racino Pre-entry to:—J. Dunker, Kirklands Garage, Kinross, Kinross-shirn. MAIL ORDER or PERSONAL SERVICE J u n o 26 Devon R a lly . Woodbury Common, Nr. Exmouth Open R/G/P and Chuck Gilder entry 2/6d on 'laid. J u n e 26 St. Albans Gala. Chobham Common, Surrey. Open R/G/P. A/1 E n te rp ris e T a u r a n + R a v tn 10 Futaba single channel F3TA trans­ Glider and Couped'Hivcr. C h a n n a l almul transmitter superhet mitter F3TR receiver cash price J u ly 3 Esher Intermediate R iC Contest. Shuttleworth Collection Airfield rece iver -f-Climax 10 servopaek-f- £16.5.0. or 47 weeks at 8 - service Old Warden, Nr. Blagleswrde Beds. 11 a.m. 5,- Pre-ontry to — M e rc o 61 t i c ca sh £40.0.0. or 35 - to r charge £1.5.0. M. Everest "H eyst" Coldhaibour Road. Pytord, Woking, Surrey. 96 w eeks service charge £14. By July 1st. Note admission 3/6d to Airfield, also includes car p a rkin g , access to m u se um and c o lle c tio n . Raven single channel transmitter S M .A .F . E re nt. Area Venues. Team Glider "Model Engineer J u ly 3 Kell-Kraft Super 60 + Aorlal 6 and liltor receiver cash price £18.19.6. Cuo"; F.A.I. Power "Astral Trophy” , and Open Rubber. Channel TX 4R X I McCoy 35 r/c+ or 50 weeks at 8<- service charge J u ty 3 2nd Finchley and D.M.A.C. CIL. Rally. Glebe Lands, Summers £1.19.6. Lane, Finchley. N.12. JA. A and B Combat. Pro-entry 3/- to:— Climax Tri-pack Cash £74.0.0. or W . M. Baird 4. Belmont Close, Totterldge. London. N.20. 18/· tor 99 weeks Service Charge £7 J u ly 3 Scottish Gala. Spango Valley, Gourock. R,G P. JA. F.A.I. Team O.S. Mlnitron 12 channel s im u l­ Race, Combat and Ret Race. Pre-entry F/F:—T. Preston. 53. taneous superhet TX & RX Cash price North Gyle Terrace, Edinburgh 12. C/L:—1. Coutts. 12. Machan £39.10.6. or 96 weeks at 24,'- service Road. Laikhall, Lanarkshire. R/C K its charge £3.10.6. J u ly 10 Clwyd Slope 5o.tr/ng Meeting. West slopes of Moel Flamau Nr. Enterprise Navigator £8 15 0 Ocen A /R . Junior. R/C Slnale Surface. ___ Cnlvipiikv Tautau £13 13 0 J u ly 17 S.M.A.E. a ll Scale Meeting. R.A.F. Swindcrby, "Rlpmax Single Froa Jackdaw £5 18 9 We must apologise for the delay with Channel R/C. "Superecale"F,'Fand C/L scale. KK Mini-Super £4 18 0 J u ly 17 TS€6 Devon FjF Championships. Woodbury Common R/GjP. Raven multi. Eguipment but this really KK Super 60 £6 0 0 Is now available-ex stock. Only open to competitors rormally resident In Devon. Details KK Gyron £3 9 8 from 0 . G. Baudot. 80. Moortleld Road, W ithycombe, Exmouth. Sterling Mustang £16 5 0 J u ly 17 East Midlands Speed and Combat Open Meeting R.A.F. Bnrkston Sehuco-Hegl Ranger £9 15 0 R a v e n 6 channel TX RX s im u l­ Heath. A ll classes speed, siecial price for percentage of record Topfllte Schoolmaster £3 12 6 flights Class "A ” combat, entry 3/- per class In speed Combat Topllite Schoolboy £2 5 0 taneous superhet Cash puce £66.15.0 or 97 weeks at 16/- service charge 3,'- to G. Farnsworth 29 Balaclava Road, Sheffield 6. by June 30th V e r o n C o n c o rd £11 15 6 £6.15.0 S.M.A.E. Insurance req'd. V o r o n C e s s n a £5 12 6 J u ly 24 Ardrosun Control Line Contest. Auchenharvle, Ardrossan, Ayrshire. Rnt Race and Comtal. J u ly 24 Sooth Coast Gala. R.A.F. Tangmere. Nr. Chichester. Sussex. Raven 10 channel TX—PX slmul F/F.C-L and Multi R.C. A ll engines, kits, accessories totalling superhet. Cash price £77.15.6. or 79 J u ly 31 $ M A E Indoor Meeting. R.A.F. Cardinglon. Bods. over £ 5 are now available over 20 weeks w eeks ot 19,'- service charge £7.15.6 J u ly 31 Woodford Rally. Avro Airfield Woodford. Cheshire. Open R/G/P w ith 10 per cent service charge combined tailcss R/G/P, Cluck Glider, F'F Scale. Combined F. A.I. R/G/P. Class A Combat F.A.I. and jA Team Race. Rat Race C /L S cale, R /C M u lti S tu n t. R /C G oo d yea r P y lo n Race. Please enclose reasonable postage with We w ill build you any mcdel from orders ana address all mail to this kits or plans on credit terns, send branch and not to other branches In the COMING EVENTS lor quotation. com pany. Additional to last Month’s announcement. A u g u s t 7 Uxbridge D.M.A.C. Control Line Rally. Charvllle Lane. Hayes, Middlesex. S.M.A.E. " A ” Combat ” B” Rat Race (56lt. lines) SIDNEY ROSS & Co Ltd P re -E ntry 3 /· to :—R . S helvoy. 5 A Station Parade. Denham. Bucke Septem ber 11 W harfedale Team Race 1.000 lao race lo r F .A .I. raccis(2-Scc.) 9-13 P O W IS ST., W O O L W IC H , L O N D O N S.E. 18 November 6 Wharfedale Team Race. 1.000 ap race to r " c la s s B ” racers (5cc.) C h a n g e o l Canterbury Pilgrim s Gala, October 9th. not October 2nd. Tel. WOO 2820 D a te St Albans Gala. Chobham. J u n o 26 n o t J u n e 5 th . .VtV.VTV.VW.VtV.VIV.VTV.V*V.VTV.'/»V.VtV.VfV.VTV.vTv.VTV.vyV.VrV.VrV.V»V.V^i.vTV.VIV.^'V. C a n c e lle d Crawley Rally. Gl. Buckswooe! farm S ep tem be r 25th c a n c e lle d . '.v’tv.y»v.wv.v»v.v'tv.vtv.v*v.vTv.viv.'/lfv.vv'/inv.vrvy»v.vTv.v7v.v7V.viv.\> let Α/βιυ/ >11 r TO P F U T E ■ Z - — ------MONOKOTE t a r n ® . The covering with the built-in finish do the job for

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or 88/- Deposit and 12 / ONLY£ l 7 . io. Monthly Payments of A m Jjm Carr. Paid G.B. M ’land. (Total £/£. 4. 0.)

C ycle and Light and sporty in design, A ccessory gay in colour for th e L ist Free younger appeal. Specifica­ o n request tion: G ent’s sizes 19*. 2 1 ' or 23" Finished in attractive Blue enamel with double gold lining. Fully brazed frame with quick-release front and rear fork ends. 26' x 1J* wheels W hatever you're madclling.there'B an H.M.G. product to fitted with give the job solid construction and a superb finish and Michelin Zig- Zag tyres. "All it ’s so much easier with H.M.G! Rounder’’ * POLYSTYRENE CEMENT handlebar with adjusta ble • CLEAR SHRINKING AND COLOURED DOPES stem. Tan mat- tress-type • ONE PACK1 FUEL-PROOF DOPE saddle. Caliper * ALL PURPOSE CLEAR ADHESIVE brakes. Sports pattern mud­ Look for the new, eye-catching H.M.G. packs at your local guards. Rub­ model shops today'. Ladies Model with (Chain- ber pedals guard). 19 or 21 in. Frame Sturm ev- Only £17.19.6 or 90/- Dep. Archer 3 - H. MARCEL GUEST LIMITED, a n d 12 M th ly . P y ts. o f 23 9 Speed Gear. Riverside W o r k s . Collyhursl Road. Manchester. 10. (Total £18.15.0). T el: CO L i*14/1536 GAMAGES · HOLBORN . LO N D O N E.C.I HOLborn 8484

KINDLY MENTION " A E RO Μ O D E L L E R " WHEN REPLYING TO ADVERTISEMENTS HENRY HINODE SAYS— ^ ^AMAZING RELEASE ! Get started into Radio Control NOW ! with this new HINODE offer.

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Tony stunt k it and the fabulous Grasshopper R/C with Cox 049 McCoy 35. only £9 cash or £2 ★ SPECIAL OFFERS * Guidance Tx Rx Actuator and Har­ deposit, leaving 6 monthly payments Tony Junior or Navy Fighter with ness. only £20 cash o r £5 deposit, of 27/- the fabulous McCoy 19. only £6 cash leaving 9 monthly payments of 37/8

* SELECTED ENGINES * i t R / C EQUIPMENT * i r ‘POP’ ACCESSORIES * ★ SECOND HAND ITEMS i t RCS G uidance System II 2 7 3 /0 McCoy 19 3.2 Glow 69/6 Finest Japanese Silk, sq fd 7 /6 Metz Baby Gift Set (complete) £16 RCS G uidance System III 2 9 4 /0 Large Bushed Bellcranks 3/11 Grundig 2 Channel Unit £29 McCoy 29 5 cc Glow 7 4 /6 Actuator and Harness 50/0 McCoy 35 cc. Glow 7 9 /6 Large Metal Control Homs 3/0 Tommytone Tx in Case £31 RCS Inter 6 Tx and Rx £34 Krick Universal Changers 84/0 Orbit Single Relay Rx £4( McCoy 19 R /C Glow 9 9 /6 With 3 Servo Pack £54 McCoy 35 R/C Glow 109/6 Enterprise Standard Charger 86/0 MacGregor Con Mod Tx £5 Elmic C om pact A ctu ato r 6 7 /6 Burlington Tool Chests 103/0 Elmic Commander 40/0 Super Tigre G.I5 Glow 202/0 Elmic C orporal A ctu ato r 4 7 /2 Super Tigre 29 RV Glow 2 8 7 /0 Engine Test Stands 14/7 Elmic Corporal 30/0 Slim Jim Motorised Servo 95/0 McCoy Needle Valves 4/9 Elmic Conquest 25/0 Fuji 15 2.5 cc. Glow 8S/0 Slim Jim Engine Servo 85/0 Fuji 19 3.2 cc. Glow 90/0 Vcco Standard LR Plugs 5/8 Graupner Unimatic 40/0 Climax Unimite Mk II 70/0 KLG EG 200 Plugs 9 /8 Fox .049 Glow 25/0 Fuji 35 6 cc. Glow 117/6 Grajpner Unimatic Servo 79/6 PAW 1.49 cc. Diesel 86/0 Graupner Wheels per pair lj" 6/0 Enya 19 and Silencer 60/0 PAW 2.49 cc. Diesel 98/0 ALL DEAC PACKS IN STOCK 2". 6 /6 . 2 { 8/6. 2 j " . 1 3 /6 ED H unter 3.46cc. 3 7 /6 PAW 19 D Diesel 104/6 Light Lay Strate 100 ft 5/3 Frog 2.49 cc. Mod 40/0 PAW 19 BR Diesel 1 2 6 /0 i t POPULAR KITS * Enya 15/19 Silencers 22/0 Super Tigre S 35 Glow 8S/0 ED 2 .4 6 cc. R acer 8 5 /0 Enterprise 'Tony' Stunt 126/0 Enya 29/35 Silencers 26/10 Johnson 35 Glow 65/0 Cox Tee Dee 010 Glow 96/0 'Tony Junior' Stunt S7/6 OS 15/19 Silencers 25/3 Veco 29 Glow 70/0 Cox Babe Bee .049 Glow 42/6 ‘Sta· S h o o ter' }A TR 3 0 /0 OS 29/35/49 Silencers 30/6 McCoy 35 Glow 40/0 OS Pet 1.6 cc. Glow 53/2 'Grass Hopper' 049 R/C 57/9 Merco Silencers, all sizes 26/3 ETA 29 VI C Glow 8 S /0 OS IS 2.5 cc. Glow 118/0 Schico 'Bergfalke' Glider 160/0 PAW Silencers 13/9 AM 2S 4 0 /0 OS 35S Glow 133/0 Schico 'SB/' '90' Glider 160/- AM 10/1S Silencers 11/10 Amco BB 4S/0 AM IS 1.5 cc. Diesel 74/8 Graupncr 'K10' Glider 132/6 ETA IS Twin Silencers 6 4 /3 McCoy 19 4 0 /0 ME H eron Icc. Diesel 6 0 /6 Graapner 'Clow' Glider 199/6 ‘Chicken Finger' Stall 3/11 Fox 29 R 110/0 ETA Elite 2.S cc. 1 4 8 /6 Mercury 'Grusader' Stunt 80/0 Dryfitt 6v 1 amp Aecs 70/0 Enya IS Glow 78/0 Veron 'Mini Robot' R/C 49/5 Varley 2v 4 amp Accs 22/6 ALL SECOND HAND ITEMS ARE Merco 35 6 cc. Glow 119/6 Veron 'Skylanc' Scale 112/6 GUARANTEED Veron 'Velox' Pusher 46/2 ALL VECO METAL SPINNERS STACKS MORE IN STOCK HUNDERDS MORE IN STOCK ALL TORNADO PROPS FULL LIST ON REQUEST Part exchange is our speciality. ALLEN SCOTT LTD., News letter and Secondhand List ROLAND SCOTT LTD., 54, Shudehill, MANCHESTER 4 forwarded on request. 147 Derby Street, BOLTON Phone BLACKFRIARS 6924 Hire Purchase w ith pleasure. Phone BOLTON 27097

KINDLY MENTION “ AEROMODELLER" WHEN REPLYING TO ADVERTISEMENTS T h e A d v e rtis e m e n t M a n a g e r re s e rv e s th e rig h t to refuse or suspend advertisements without CLASSIFIED giving any reason. Every care Is taken to avoid mistakes, but the publishers cannot be held liable in any way for clerical and printing errors ADVERTISEMENTS or omissions. Receipt of "co p y" for publication Implies acceptance of these conditions by th# PRESS DATE for August issue, 1966, June 20, 1966. advertiser. W hilst every care is taken to exclude advertisements from doubtful sources, no Private Minimum 18 words 6/- and 4d. per extra word. responsibility can be accepted by the publishers Trade Minimum 18 words 12/- and 8d. per extra word. Display box rate £2.10.0 per single for the bona tides ol advertisers. column inch. Box Numbers to count as six words when costing. Box replies to be sent care of Advertising Department, 13-35 Bridge Street, Hemel Hempstead, Herts, England. Copy received after first post on June 20 will be held over until the next issue, unless cancelled in writing before 22nd of following month.

Works tuned Super Tigre G20M5D £«; Webra Mach-1 tuned. 7 0 '-g o o d c o n d itio n . D a v id T o y, 41. Harvey A ven u e, AIRLINE ENTHUSIASTS S in g a p o re 16. Model Airplane News Plans

Read the latest news and views of all the world's A ll R/C models. Boat Crash Tender Frog 3.49, Hover­ Latest Addition scheduled and non-scheduled airlines in AIRLINE craft SRN—1 43 x 30 McCoy 19. plane Jackdaw (partly M.A.N. 55A. built) need covering. Fox 35. R.C.S. 10 channels tx and NEWS. Fleet lists airline histories etc., Sample Rx. lailsafe, 3 new Ampledyne servos, magazines 1960- Klutz Bug:- A fully aerobatic Multi radio c o p y 21- (50 c. U.S. F ro m : 66, Books, worth £140 sell £95 P. Baxter, 1. Cadmus trainer, lor aileron, rudder and Court, Southey Road, Brixton, S.W.9. elevator control. Very simple DAVID A. EDWARDS construction, flat base wing. Span 64ln., for .35-.40 engines Crlndley Hall, Chorlton, Manchester 21. Selling up; O.S. Max 29 .£3. Rivers 3.5 £3. ED. 2.5 £2. d e sig n e d by G us G e ls s in g e r. other engines, also wood, nylon, junk. C. Thomson, 38. Olympia:· A 60 gram Wakelield with Duncroft, S.E.18. tapered wings and eliplical tips, has wmg mounted on low pylon. F O R S A L E Servos: 3 Duramalic. 2 home-made progressive, all for Sheet covered fuselage and relayless 8-channel receiver, home-made, rclayless. oeodctic tail structure, designed Flight Link proportional 3-4-1 superhet outfit. Tx and lor rear.wmding. Nose block Is Rx Deecs. Faultless perloimance. as new, cost £140 Offers. Smith 9. Ashley Gardens, Merstham, Surrey. detailed and propeller blades are accept £95. N. Bultorworth. Rylands P.O., Beeston. Nottingham. Phone Nottingham 255469 D.C. Spitfire engine fitted silencer, 50/-, A.M.15 drawn full size. W ingspan 49Jin. e n g in e 50/-. b o th never flo w n as n e w . 127 A e ro m o d c lle r's designed by Carl Hermes. Super Fury just reborod. 35/-; Silenced T.D. .09 good £9. Various other mag's write for lists. Davies, 18. Rail­ Limited stock only, order while they lastl «0/· Bone, 7, Wharmlands Road. Newcastle on Tyne. 5. way Street. Lancaster, Lancashire. For a full list of M.A.N. plans send 4d 1/36 Scale Dart Kitten, authentic kit in three shades of stamped addressed envelope. A ll plans plastics.'-. D. Pounder, IS, Knaresborough Road. Ripon. are priced 7/6d 6d postage from Aero­ Y orks. Who is BINDING? modeller Plans Service, 13-35. Bridge P.A.W . 2.49 Ms .III £3. O.n.o. and Wen Mac Hot Shot, Street, Hemel Hempstead. Herts. starter broken. 25s. o.n.o. B. Marren. Royco Hall. Louoh- Authorised agent for borough Univ. ol Tech., Ashby Road, Loughborough, standard style binding L e ic s . of Aoromodeller and Selling up engines, radio gear, mostly single channel other Model Aeronautical Janes ‘'Aircraft of the Fighting Powers" and other accessories. A ll pood or new. S.A.E for lists. Cartlldge. books. S.A.E. Elliott. W illow Cottage, Station Road. 14, Beech Drive, Clough Hall. Kldsgrove, Stoke on Trent. Pross Journals, to whom W hittington, Salop. all loose copies of issues Jackdaw kit £4; T.D. 049 Timer model £4; New Max.ll should be sent, is:- Model-Avia, the model magazine that covers the world 15 RiC £3. Multi-Gum R< Deans Bank £5; W right R/C ol model tlying. Edited in French. Send lor tree specimen outfit offers. Godden "M aredln" Balsham, Cambs. and subscription details. Model-Avia. 31. rue du Prin· Beaumont Aviation Literature, tem ps. B ru x e lle s 5. B e lg iu m . For Sale. Oliver Tiger III -4- Webra Silencer £S; Enya 15 11 Bath St., London, E.C.1. II + Enya silencer £3; Cox Special 15 + HJN Silencer £4; American Magazines. Year's Subscription "Model PAW 19 BR Mod f Muffler £4: Co· 09 Silenced £3; PAW Airplane News" 46'6d. "American Modeler" 35/6d. "A ir 149 M u ltle d £ 3; ME S nipe · S ile n c e rs in KK Ranger charge per volume of Aero- Progress" 39/6d. Full catalogue tree. W iden Ltd., (Oepl. £3.10 (unflown) Silencers, s.a.e. please. 2. Field View modeller, Model Cars, Model t ) 61a. Broadw ay. L on do n E .l5 . R oad, P o tte rs B ar, H e rts. Boats, or R.C.M.&E. £1, 25/- for Aerial Warfare. Aviation. Airship Books Wanted. Unused Eta 15 Mk.ll speed pan 2 power props 7 x 9 Model Engineer or Model Sales Book let—4d. (New. Used). Bookshop. 116. Bo­ £4.10.0. Mackay.234, Preston New Road. Blackpool. Railway News plus post and hemia Road. St. Leonards, Sussex. Triang ground based transmitter. Aeromodellcr re­ packing, index provided. MODEL NEWS (Australia)—published Bi-monthly ceiver. rising clockwork escapement, meter for tuning 12s. per year, sterling posted direct, coves* all Austra­ and checking battcrius. Callers preferred to see working lasian Acromodelling in pictures, features and plans, £7. AM 25 with water racket and flywheel, exchange for 2.5 ft, West King Street. Southport. Queensland, Australia. R/C Glow engine M ills .75 will· water lackcl and flywheel TRADE exchange for 1 5 R/C glow engine. M ills 1.3 exchange for Interested in Contest Flying? Read Northern Area News radial mount .049 glow engine. A ll three engines m good RADIO Equipment largest stockist In the country. 9/- per year Itom Ron Firth, 30. Struan Road. Sheffield. 7. condition. G Mosley, 58. George Street. Saltaire, Single, multi, proportional, all R/C engines and acces­ Shipley. Yorks. sories. Call, write, phone. Wanted good R/C transistor SAILPLANE 6 GLIOING-The magazine for all gliding Outstanding Bargain. Cox Pee Wee D.C. Super radio equipment, engines servos, airframes. Radio Con­ enthusiasts. Published alternate months. Send 4/- tor Merlin, unrun Cox 049 2 M ills .75 Viper 1.5 now unrun trol Supplies, 581. London Road, Isleworth, Middx. current copy or £1.4.0d. for ayear's sub to British Gliding Mills 2.4 Cox special 15 unrun since £3 overhaul at ISL0473. Association, Artillery Mansion. 75, Victoria Street. Elfllandcr—A.M . 35 D.C. 350 vintage benchrun only. Hot L o n d o n . W .1 . Frog 500 O.K. Supreme .29. McCoy .49 piston ringed ROSSI 60. t0cc.< chromed. £17; Rossi 60 (chromed) racing engine. Accessories timers tanks etc. £30. or R/C £19.10. Rossi 60 STD £13.10.0d; Speed pan lor 2.5cc. PROPERTY separate o tte rs . B ox N o .783. with spinner £1; 5 cc. pan £1.5.0d: 2.5 cc. team race pan Birm ingham . Aston 204 W ilton Road. Shop Premises 13/-: 4 grades glow plugs, 4/- each; Vulcan jet £12; 6x8. lor Sale. "The Model Mecca". Rental £185 per annum 6 x 9. 6 x 10, speed p ro p s ., 3 /-; 7 x 8, 7 x 9, 7 x 10 3/2d., including living accommodation. £1,500 for Goodwill, 9 x 11.9 x 12. 9 x 13. 4 -. Rossi Via Pace 13. Brescia. Italy. fixtures and fittings, stock at valuation. For lurther par­ Model Airplane News Plans ticulars apply Thomas Price A Co., Royston House, TATONE TIMERS Standard or JA fuel shut-oils. 14/17 George Road, Edgbaston, Birmingham 15. EDG. Recent Additions Standard or jA tlood-otls and Oethermalisers 35/6 each 0939. post free from Michael Smith, 1. Station Road, Kimberley M .A .N . 53A Wymondham. Norfolk. SPECIAL OFFER Advertising Pencils. Superb Ball-Pens. Combs, Petite Parasol :· R/C single channel sportster. .09 Brushos. etc. Raise funds quickly easily. Details— (1.5 cc). 41 J in . PORTSMOUTH & SOUTHSEAS Hobby Shop Is Northern Novelties, Bradford,2. Pink Fink III :· C/L rat racer, profile luselage. "Robin Thwaites", 28. Arundel Street. Portsmouth. .29-.35(5-6 CC) 271ln. Early closing Wednesday, open all Saturday. GLIDING Douglas 0-43A F/F scale observation plane .049 Gliding Holidays courses with the Lakes Club. One (,8cc)40}in. WANTED week. £17.1?.0d. Fully Inclusive. For brochure apply:— M .A .N . 54A Wanted, Ready to fly Piper Tri-pacer or sim ilar lowest D. H. M llletl.27. Scotforth Road. Lancaster. P-3$ :· C/L 8tunter based on W.W.2. price to:—Smith, Rectory lane, Areley Kings, Slourport. tighter .35(6cc) 55iin. W o rc s . 1A Go-Go:· F/F contest pylon, simple con­ struction .049(.8cc)47ln. GIG EIFFLAENDER REBORING SERVICE Radio Modeller first Issue (January) wanted urgently. R/C Floats;· R/C floats for m ulti models34in.x Chester Road, Macclesfield , ·. State price on p.c. Cook. 47. Kemp Street. Brighton 1, 4 in . S ussex. REBORES. DIESEL ENGINES. 21/- c.w.o. GLOW- Limited stock only, order while they last! lOcc.R/C engine.9/10 Graupner Tone-large power boat PLUG ENGINES from 30/· c.w.o. C.O.D. SERVICE For a full list of M.A.N. plans send 4d. W ill Trade.Exchange Engineers Tools/Equlpment. List (pay the postman, UK only) 4/6 extra. A ll engines from:—Oean, Oana Cottage, Scarborough Close, Cheam, tested and returned (post free In UK) within three days from receipt; customers abroad please add stamped addressed envelope. All plans S urre y. postage to cost. A ll our work guaranteed for one are priced 7/6d. plus 6d. postage from month from the time you receive the engine. Acromodeller Plans Service. 13—35 MODEL MAKING ENQUIRIES. SPARES, etc., please send stamped Disabled Aeromodeller wishes work at home. Radio envelope or reply coupon. Bridge Street, Hemel Hempstead, Herts. Control kits assembled anything considered. J. Muir, c/o Forsberg, 23, Dowanhlll Street. Glasgow, W .1.

KINDLY MENTION “ AEROMODELLER” WHEN REPLYING TO ADVERTISEMENTS GLIDING COURSES No more GRID LEAKS? SKYFAME AIRCRAFT ABERDEEN GLIDING CLUB MUSEUM Oiler Gliding Court»» in Dual Control Aircraft, and N o ! hav« vacancies during July, August & September. ~ 1 f e e : 17gns. per week, including Full Board. for sure N o ! For Fu'l Delalls'.wrlte to:— instead V SEE A. J. MIDDLETON. COURSE SECRETARY. THE CRAIGPARK, NIGG. ABERDEEN RADIO CONTROL WORLD F A M O U S the fact filled 36 page bi-monthly takes FIREFLY | ovor the mantle o l the Worlds most M O S Q U IT O r COMPLETE COLLECTION popular subscription service Radio of all “ Model Aircraft" Plans, rolled, over 250 — Control magazine. If you haven’t heard of FLEA (we can't bother to count 'em ) Includes vintage and YO R K many long since removed from sale titles still it—you’re missing something. If you've fondly rememberer. This is a unique one-time never subscribed—your out of the fold A N S O N chance oiler only—complete collection to be s o ld to dear R/C’er. first customer sending £5 remittance (Just think ol it. O X F O R D at less than 6d per plan— o club or shop could not No other journal cavers U.S.R/C model­ Staveiton Airport. Cheltenham lots on the deal). ling so effectively. Designs, Circuits Open Wednesday to Sunday. 2-6p.m. ETC. Adults 3s. Children It. 6d. AEROMODELLER Ideas galore—all tor only 21/6 a years’ Reduced rates for Coach Parties 13,35, Bridge Stre»t. Hemol Hempstead, Herts. supply. SEND cheque, P.O. or Money Order value 21/6d with order including A ir Display July 1< your name and address clearly printed to Radio Control World Subs. TELL THE ADVERTISER you read h it announce­ SLINGSBY SAILPLANES LTD. Model Aero Press Ltd., ment in AEROMOOELLER-he will appreciate the 13,35, B rid g e S tre e t, H em el knowledge of how you came to learn about hie KIRBYMOORSIDE, York. b arga in . Hempstead, Herts. England. Have Vacancies lor

S tre s s m e n GLIDING HOLIDAYS Design Draughtsmen AIR PICTORIAL From A pril lo September with the Kent G liding Club Draughtsmen There's always somethirg new In AIR PICTORIAL at Challock, Nr. Ashtord. Kent. Resident Instructor, Brllnin's finest authoritative monthly magazine on air affairs. Keeps you In the picture of develop* Dual Control Gliders. Reduced Rates from A pril lo For Glider and Light Aircraft Projects manta every month. Nealy 80 brilliant photographs. fleet week In June. For further details enclose a At newsagents and bookstalls 1st each month 2/-. S.A.E. to Course Sec. Ann. out>. Ine. poet At.10. 8cm) remittance to: Applicants snouio write to A. L. Coaens, Prebbles Hill Cottage, Pluckley AM. AIR PICTORIAL. Rolls House. Breams M R . W . N . S L A T E R . Bldgs., London. E.C.4 Ashford, Kent. Managing Director o r P hone K lrb y m o o rs ld e 3 t2 . ■GREAT N E W S !------

Read "Popular Flying", the alt.-montha A major Development on Single magazine of the Popular Flying Association, the re­ presentative body of u!ta light and group aviation. Channel allows several models to Dieter Hoffmann's Karl Rles books on the Full membership £2 per annum. Magazine subscrip­ German Luftwalfe. be flown at the same time at HALF tion only: 12 istuet 24s. post free. Specimen copy In S to c k : Dora Kurlwst und rote 13(Blackand W hite Photo series; German captions). Vols. I. II. Ill, 45s. 2» .0d fro m th e THE PRICE OF SUPERHET each, post free. POPULAR FLYING ASSOCIATION Top Quality components used Markings and Camcuflage Systems (Colour Series: Elstrco Aerodrome, Boreham Wood, Herts. English languaje). Vol. II, 59s. post free. T e l. : B s lre e 4870 throughout. Available on our ex­ From your usual bookseller or from U.K. Agent: GRAHAM K. SCOTT. clusive terms of No Deposit. One 2 The Broadway, Friern Barnet Road. London, or Two years to pay. For as little as N .11. SPINAFLO SILENCERS 42 6 d . to 62 6d. 7/- a week you can fly with the latest Largest range ol Silencers In the world over 75 types equipment. Use it for R.C. Combat, These bright anodises units are e rewarding AERO-SPOTTERS RADIOS Investment for ail discerning modellers. Fuel Team Racing, Pursuit, etc. economy and model ceanliness arc but two of C.A.E.60O.VHF4MW £21 many aide benefits. Madt to fit any sldcstack engine. C.A.E.30O, VMF.MW. LW £28.10 M in i lo r .09 to .15. S ta n c a rd for .’ 910 .35. S u p e r for Send S.A.E. to: C.A.E.100. VHF, SW, MW. LW £35 .4910 .51 Airport Type Digital Clock» £7 Latest Additions E n y a 60 T / V E .D . 246 SUN LANE CYCLES AH complete with mocnUno strap, adaptor block I tenet 3top-W atuIIV». Da»h A W ilsl Chronographs. machined to close Units and colour anodised 59 Sun Lane, Gravesend, Kent. AERO ACCESSORIES rotary flow diffuser. O.A.C. COMPONENTS. For full details I t W ellington Road. ALTrlncham 0289 Cheshire Albion Rd.. Hersham, Sx.. Eng. A ll leading kits and engines in slock.

‘Joy-Plane* BALSA CEMENT New and improved quality. Very quick and hard setting. Penetrates deeply, and is heat resisting V and fuel proof. In tubes. 8d.; l/2d.; I/I0d. (Recommended retail selling prices) Made by Modellers for Modellers is the registered trade mark of TURNBRIDGES LTD., LONDON, S.W.17 rrmruifiiLtuteta of quality products fo r STICKING, STAINING, POLISHING. PAINTING GUILDFORD Tel.: * MODEL Guildford 2247 PASCALLS MODEL SHOP SHOPS TO E. PASCALL (GUILDFORD) LTD. Opposite Astor Cinema SERVE YOUR 10S WOODBRIDGE ROAD, GUILDFORD Stockists of all leading nrakes of model kits and accessories. INTERESTS Mail Order Service. H.E.T.A. Dealer

BEXLEYHEATH C A R D IFF T" 2,043 | Tel.: Danson Park 2055 HEMEL HEMPSTEAD BUD MORGAN Tel.: Hemel Hempstead 53491 REMCON The Model Aircraft Specialist FOR ALL MAKES CF RADIO EQUIPMENT For KeilKraft. Mercurv, Veron, Ripmax TAYLOR & McKENNA AND MODELLERS' SUNDRIES M acGregor R /C , R.E.K. Radio C ontrol. (Hemel) LTD. Our Speciality: Rcvell. Airflx, Frog. Monogram 203 MARLOWES Do-it-yourself Superhet Equipment K.K. Handbook 3/-. A.P.S. Handbook HEMEL HEMPSTEAD, HERTS A Advice from practical modellers A 2/-, inc. postage. Send S.A.E., stamped Write: Dept. M.S.D. 4a Broadway please to r assorted lists. For Model Boats, Aircra-'t, Railways. ^^exIejfheath^Cen^^ 22 8, 22A CASTLE ARCADE. CARDIFF Racing Cars and Accessories.

BIRM IN G H A M v,c“ri* 4,17 CH ICH ESTER Tel 3592 HEMEL HEMPSTEAD BOB'S MODELS PLANET MODELS Tel.: 250U2 S20 COVENTRY ROAD, & HANDICRAFTS AEROMODELLER SMALL HEATH. BIRMINGHAM 10 Model Aircraft Centre of the Midlands. 108 THE HORNET, PLANS SERVICE All the best in British and American CHICHESTER, SUSSEX 13-35 BRIDGE STREET Prcducts. Aircraft and Boat Kits. All Accessories Open Monday to Friday We offer you help and advice backed "Tri-ang”, "Trix", "Scalextric” Send 2/- for our illustrated PLANS ^^^^^^j^^rears^xgenence^^^^^^ Personal Service Mail Orders. HANDBOOK of thousands of models

BIRM IN G H A M ^ 1: NOR 5569 CHORLEY Chorley 4707 Tel.: RAV 0818 THE MODEL MECCA THE HOBBIES SHOP AVICRAFT LTD. 4 CHATTERTON ROAD BROMLEY 204 WITTON ROAD, (J. D. R. CAMERAS) BIRMINGHAM 6 I sell as much modelling gear as I can 1 ST. THOMAS’S ROAD afford to stock. Radio Control, Boats. Aircraft, Boats. Trains, etc.. B’ham's CHORLEY, LANCS Planes. Good selection of wood and Telecont Radio ajents. "Gena” Fibre accessories. Glass Hulls. Model Aircraft, Boats, Radio Control Whatever you want in the way of gear Model Cars, Railways & All Accessories for Aircrafts sake, send your orders here.

B IR M IN G H A M Tel EAS 0873 DONCASTER Tel.: 2524 KIDDERMINSTER THE PERRY'S LTD. B. CUTTRISS & SONS MODEL MART 749 Alum Rock Road, Ward End, 2 Comberton Road (opp. Railway Station) Birmingham 8 MODELS AND HANDICRAFTS We are Aeromodelling enthusiasts, and British and Imported Engines, Kits and wish to help you with your requirements. Radio Control units, etc. Model Racing 40 DUKE STREET MAIL ORDER SERVICE Car and Railway sets and accessories. Call and see our Shop All Leading Agencies. Postal Service. Headquarters: Kidderminste* District F.C.

Tel.: 27097 BOLTON EX ET ER Τβ,·: 76935 LANCASTER Tel.: 3031 EXETER RADIO CONTROL ROLAND SCOTT LTD. 35 SOUTH STREET. EXETER Kits and Accessories: THE MODEL SHOP Mail Order Specialists Kell, Veron, bkol, Goldberg, Sterling, 8 CH IN A STREET The obvious shop for all your modelling Graupner. Dubro Large stocks of all Plastic and Flying requirements. The showroom of the North. Radio by MacGregor. Citizenship, F. & M. Kits. Engines and Accesiories. Scalex­ Phone your order ANYTIME Bonner, R.E.P., O.S. Minitron, etc. tric Roadways. Tri-ang aid Lone Star PHONE OR CALL 147 DERBY STREET (Jdai^^rder^b^etjjCCLD^jrit^^leasur^ Electric Railways.

BOURNEMOUTH °*n; FA REH A M T’l: 4136 LEEDS Tel.: 27891 WESTBOURNE MODEL SUPPLIES G. Μ. H. BU N C E&C O . LTD. THE MODEL SHOP 2 Grand Cinema Buildings, 58 MERRION STREET Poole Road, Bournemouth West 204 WEST STREET, FAREHAM (Nr. Tower Cinema) The shop that meets a modeller's needs Aircraft, boats, engines, radio control. Model aircraft— boats—cars—railways, all — so why n o t v isit us w hen in Engineers/woodworkers tools & machinery. makes engines. Every accessory. R/C Bournemouth. equipment. Same day postal service.

B R A D FO R D Tel 26,86 FARNBOROUGH S LINCOLN ™ 27088 THE MODEL SHOP MODELS & HOBBIES THE MODEL MAKERS MECCA 182 MANNINGHAM LANE 214 FARNBOROUGH ROAD, HANTS (Opp. Bellevue School) 13 CLASKETGATE Kits, Engines. Radio. Accessories. Aircraft, Boats, Engines. Radio (Next door to Theatre Royal) Control, servos and all accessor··* Yorkshire'* Telecont Stockist*. Large stocks of all Plastic and Flying Kits, Solarbo balsa silk, dope, plywood, etc. AGENTS FOR ALL LEADING MAKES Engines & Accessories. Scalextric Roadways. Mail Order. S.A.fc. for lists. Prompt Mail Order Service Triang and Lone Star electric railways.

KINDLY MENTION "AEROMODELLER" WHEN REPLYING TO ADVERTISEMENTS LIN CO LN T,l-: 25,07 LONDON Td,: WELbcck 8835 MAIDENHEAD Tel.: 21769 W. & H. (MODELS) LTD. E. W ALTO N MODEL CENTRE 61 KING STREET 14 NEW CAVENDISH STREET. W .l NEWLAND (Five minutes from Oxford Circus) Wide range of Modelling Kits and Accessories LEADING WEST-END STOCKIST OF ALL Vast stocks of Balsa, Engines, R/C Gear, Engines and R/C Equipment OUALITY MODEL AIRCRAFT KITS Dxus rattenei», etc. Mall Order Railways, etc. BOATS. RAILWAYS. MAIL ORDER Established 1932

LONDON Te,-: GUL 18,8 LONDON Tel.: MIL 2877 MAIDSTONE Tel.: 31719 AERO NAUTICAL H. A. BLUNT J.F. CARTER & SONS LTD. MODELS LIMITED (THE MODEL SHOP) 39 PARKWAY. CAMDEN TOWN, N.W.l & SONS LTD. 19-23 UPPER STONE STREET, Aircraft Engine Tuning and Specialist MAIDSTONE, KENT Exhaust Systems made to requirements. MILL HILL CIRCUS. LONDON. N.W.7 R/C equipment. Sterling. Goldberg. Complete range of modelling equipment Complete range of model aircraft, engines Graupncr, Veron, Acrokits. etc. and accessories, including R/C. and accessories, boats, cars and railways MAIL ORDER LONDON S LEADING BOAT CENTRE

LONDON T el.: STE 1972 LONDON Tel.: TID 6292 MANCHESTER ANGEL D. BRYANT ALLEN SCOTT 166 MILE END ROAD MODEL SUPPLIES S4 SHUDEHILL, LONDON, E.l 32S BROCKLEY ROAD, S.E.4 MANCHESTER 4 YOUR Modelling needs are here. The For Futaba R/C equipment and all Mail Order Specialists enthusiasts' shop run by enthusiasts! other leading makes. Keil. Veron. The obvious shop for all your modelling Full range of Kits and Accessories. Frog. Airfix, etc. Expert advice on requirements. Manchester's newest model Open all day Saturday. scale problems, easy parking shop.

Tel.: CHE 4887 Tel.: LONDON TeL: Woo,wich 2820 LONDON MANCHESTER BLA 3972

SIDNEY ROSS & CO. LTD. BLACKBURN MODELS LTD THE MODEL SHOP 154 MERTON ROAD 13 BOOTLE STREET 9 .1 3 POW IS STREET WIMBLEDON, S.W.19 MANCHESTER 2 WOOLWICH, S.E.18 Complete range— Veron. KeilKraft. Frog THE UP-TO-DATE SHOP WITH THE For all OS Engines, spares, and R/C 14 brands in plastic kits COMPREHENSIVE STOCK Mail O rder Radio equipment and boat accessories Mail Orders by Return

LONDON TeL: North 4272 LONDON Tel<: Lee G reen 2637 MARLOW LEWISHAM MODEL PR AC TIC AL HENRY J. NICHOLLS CENTRE & SON LTD. 45 LEE HIGH ROAD, LEWISHAM. S.E.13 HOBBIES 308 HOLLOWAY ROAD, N.7 Everything for the Modeller, Aircraft, Wide Selection : Helpful Service Boats. Radio Control, Railways. Cars We stock only the best STATION ROAD for AEROMODELLERS Spares and Repairs our speciality Specialists in Radio Control Mail Order a pleasure MARLOW, BUCKS

Established 1924 LONDON ISLeworth 0473 NEWCASTLE* RADIO CONTROL A. G. HERMITE THE MODEL SHOP (NEWCASTLE UPON TYNE) LTD. SUPPLIES (MODEL SUPPLIES) 581 LONDON ROAD 18 BLENHEIM STREET Tel.: 22016 ISLCWORTH. MIDDX 6 ii BARKING ROAD. WEST HAM. E.13 NEWCASTLE UPON TYNE. ENGLAND Mail Order Specialists Aircraft— Boat—Car— Plastic Kits & R/C Pioneers of modelling Largest stockists of Radio Equipment, Saturdays 9 a.m. to 6 p.m. with 34 years' experience . . . Engines and Accessories in the country Postal Service Our Expert Staff are at your Service

LONDON Tel-: H0P 3482 LONDON Tel,: ACOrn 3886 ft Tel.: Derwent 6495 MODEL AIRCRAFT R. T. BROWN OF ACTON THE LITTLE ARTIST TOWN 505 LONDON ROAD SUPPLIES LTD. NORTH CHEAM, SURREY 29 OLD KENT ROAD. S.E.l 312 UXBRIDGE ROAD. ACTON, W.3 Complete range of Leading Kits, Engines Business Hours: Specialists in: and accessories Monday-Saturday, 9 a.m.— 6 p.m. F/F — C/L — Gliders — Engines The new Futaba radio, and MacGregor, Thursday, 1 p.m. Friday, 7.30 p.m. Call, phone or Mail Order of course Postal Service Quick, Efficient Service Comprehensive stock of Plastics______

Tel.: 50273 LONDON Tel>: Brixton 54i2 LUTON ™ ; 7858 NOTTINGHAM1

L. H. W. W Y A T T BROS. AEROMODELS (LUTON) GEE DEE LIMITED LTD. 59 WELLINGTON STREET 260 BRIXTON ROAD 40 GOOSE GATE LU TO N. BEDS LONDON, S.W.9 NOTTINGHAM Stockists all leading makes of Plastic and Model Aircraft. Cars. Railways and Everything for the aeromodeller at Balsa Kits. Also "Tri-ang" and Scalextric Boats for the beginner and expert Nottingham's leading shop

KINDLY MENTION "AEROMODELLER’' WHEN REPLYING TO ADVERTISEMENT O LD H AM TeL: MA,n 88,2 STO C K P O R T Tel STO 5478 WOLVERHAMPTON A.B.C. ELECTRONICS Tel.: 26709 THE MODEL SHOP (OLDHAM) LTD. MODELS & HOBBIES (RADIO ENGINEERS) 280 WELLINGTON ROAD SOUTH BELL STREET. MANDERS CENTRE 83 LEES ROAD (BRAMHALL LANE CORNER) WOLVERHAMPTON All R/C component* available for valve or transistor Tx/Rx. Deacs — Graupner Aircraft. Boats. R/C Equipment. Engines. EXPERTS COME TO US — Metx — Schuco — Sterling — and all Railways. Car/Racing. Plastic Kits VISIT US AS WELL the others. Mail Order. S.A.E. for lists Postal Servie WE HAVE ALL THE BEST IN MODELLING

Tel.: Mildcnhall 3244 T e l.: 2855 O X FO R D T" - : 47407 HOWES MODEL SHOP LEISURE TIME MODEL'CENTRE 9-10 BROAD STREET 2 MANOR COUR", MILDENHALL RYTON STREET Largest stoc< in the Midlands Everything you are likely ever to need Model Aircraft— Railways— Cars Fantastic stocks Main agencies for all Kits. Engines and Boats— Radio Control Radio Control equipment Run by Modellers for Modellers MAIL ORDERS BY RETURN Immediate postal servee Call any time Mail O rd e r Service

D A V M TA M MODEL CENTRE Tel.: Vigilant 8292 IHIWH POYNTON 4377 SUTTON AUSTRALIA Td MF39,e F. A. & F. ALLEN CENTRAL AIRCRAFT LTD. E. L. S. MODEL SUPPLIES CO. PTY. 2 DICKENS LANE POYNTON. CHESHIRE 272 HIGH STREET, SUTTON. SURREY 5 PRINCESS WALK, MELBOURNE, C.1 ★ Radio Control Specialists ★ SURREY'S HOBBY CENTRE Australia’s Main Distributor for: BY RETURN POSTAL SERVICE Guaranteed repairs— all aspects of AEROMODELLER — MODEL BOATS the hobby catered for — H.P. terms Complete stock of all M.A. requirements and their Plans Service

MA 3603 Tel.: R EA D IN G Re“ ,in s 5,558 TEN TERDEN 7,1: 7,0 3326 MF 1975 HEARNS HOBBIES MODEL SUPPLIES 303 FLINDERS STREET and TELEGEN SERVICES S COLLINS STREET, MELBOURNE 1 HOSIER STREET, ST. MARY'S BUTTS 4 EAST CROSS. TENTERDEN, KENT Our 1965 world buying tour brings the READING. BERKS tops in all areomodelling equipment to FOR CHEERFUL SERVICE WITH All leading makes ol kits, engines and our shelves. We fly whit we sell. All MODEL AIRCRAFT AND BOATS accessories O.S. gear in stock. Your business is our KITS AND ACCESSORIES Call, write or phone pleasure. Mail Order service a speciality

ROMFORD Tel.: ROM 44508 TUNBRIDGE WELLS CANADA Tel.: 22078 NORTH YORK HOME & HOBBY STORES MAYKIT LTD. 144 NORTH ST., ROM FORD. ESSEX HOBBIES 56 GROSVENOR ROAD Goldberg — Graupner — Mail Order — 1910 AVENUE ROAD Keil — Veron — Frog — Top Flite — AIRCRAFT— BOAT— CAR— R /C KITS TORONTO 12. ONTARIO MacGregor — A.P.S. Radio Control and Actuators— Engines Late Closing Fridays 7 p.m. CALL. PHONE OL MAIL ORDER Planes, Trains. Boats. Ricing Cars. etc.

SHEFFIELD Td: Ul49 W A K EFIELD Tel 7,455 HONG KONG Tel.: 636507 RADAR CO. LTD. SHEFFIELD ELECTRICAL THE MODEL SHOP 2 OBSERVATORY ROAD & MODEL ENGINEERS (WAKEFIELD) LTD. TSIMSHATSUI, KOWLOON The mnu rnmplete trnrk n( aeromodelling 248 SHALESMOR, SHEFFIELD 3 10 MARYGATE, WAKEFIELD and hobby supplies in the Far East. Agents THE REAL MODELLER S SHOP for The all round model shop run by for Veron. Frog. Solarbo. and Sole Agents RADIO CONTROL — AIRCRAFT — all round modellers for Graupner. O.S.. and Min-X engines and BOATS — RAILWAYS — CANOES — radio control equipment DINGHYS 8 SAILING GEAR Mail order a pleasure ______Prompt mail order service______STA FFO R D 7,1 3420 W A L S A L L 7,1: 23382 1 JOHN W. BAGNALL S. H. GRAINGER P.H.L. MODEL CO. CALDMORE MODELS (Model Builders & Engineers) MODEL CRAFTSMEN’S SUPPLIES 40 ELECTRIC ROAD, CAUSEWAY BAY 108 CALDMORE ROAD 18 SLATER STREET. STAFFORD The largest stockists of Hobby Supplies in Everything for the Modeller Hong Kong. Sole Agent! for KeilKraft. The 100 per cent Model Shop since 1936 Aircraft - Railways - Boats - Electric Cars. Aerokits. A.M.. Merco. DeBoit and is well worth a visit. Repairs - Rcborcs . Overhauls - Spares - Ambroid Agents for Ohisson-Riice, Cox Sales and Servee with Satisfaction Radio Control · Part Exchanges Thimble-Drome, and other brands

ST. ALBANS 7": 50717 WELWYN SINGAPORE H. A. BLUNT BALBIR&CO. BOLD & BURROWS LTD. & SONS LTD. Ill NORTH BRIDGE ROAD 38 FRETHERNE ROAD SINGAPORE 3 12-22 VERULAM ROAD WELWYN GARDEN CITY, HERTS Leading stockists of Model Aircraft ST. ALBANS. HERTS requirement* in Singapore and Malaya Complete range of model aircraft, engines and accessories, boats, cars and railways

KINDLY MENTION “ AEROMODELLER" WHEN REPLYING TO ADVERTISEMENTS WE STOCK EVERYTHING FOR THE AEROMODELLERI -LEISURE TIME NEW! Merco 49 and 61 Mk. II Motor* with Twin Plug Head 49— £12.15.9 61 Mk. II. £13.17.6 fo r all your modelling requisites SEND FOR O UR LIST O F OVER 100 TYPES— S.A.E. PLEASE R/C Equipment: R.C.S., Futaba, O.S.. Citizenship, Tclecont. etc. + 24-HOUR MAIL ORDER SERVICE CITIZENSHIP i CHANNEL SUPERHET £54.10.0 N e w R.’C AIRCRAFT KITS by Kill, Veron. Frog. Graupner, Mercury, etc. E q u ip m e n t READ Y BUILT M ODELS LISTS — S.A.E. ttrum lig 10 all Servos Accessories, fuels, paints, transfers, balsa, obechi. plywood, etc. co m p le te All regular kits, motors and accessories in stock F4LR/RX FUTABA Φ BRISTOL BULLDOG Multi FT5A/TX FUTABA 66 in. Wing (Orbit 10) JONES BROS. OF CHISWICK FT5C/TX FUTABA • POPPET (S/C MacGregor) 56-62 TURNHAM GREEN TERRACE, CHISWICK. W.4 FCSTRiRX FUTABA (Phone CHI 0858) C ltla e n S h lp 10 a ll- • ROBOT S/C (R.C.S.) ( I min from Turnham Green Station) Established 191 I Servos complete HOURS : Mon., Tues.. V/ed. and Sat. 9 a m.-6 p.m.; Fri. 9 a m.-7 p.m. Macgregor Crystal Tx. • TAURUS AIRFRAME C'osed all day Thursday M im m a c R *. φ SCHUCO RANGER Multi Macgregor Terry- tone Rx Kit. • H.RAY Multi Macgregor Tone Tx Kit. • SENIOR FALCON F and M Tx. Rx. O .S.6 4 10. • SKY SKOOTER S/C MacGregor Flight Link. • ARISTO CAT 66 in. E n g in e s • TIGER MOTH Multi 70 in. Wing “ WORLD’S LEADING HOBBY HOUSE” S'Tigro 60. R/C. (O rb it 10) S'Tigre 51. R/C. Several other models also in stock IMPORT-EXPORT S/TIgro 46. R;C. I POLK IMPORT: Manufacturers please send S/TIgre 19. R/C. Full stock o f 1st class kits S'Tigre 15. R/C. ------All enquiries welcomed ------catalogues and samples w ith quota­ A ll D. C. engines. H.P. Facilities available tions fo r best U.S. representation. O.S.15.R/C. O .S .3 0 . R,'C. Demonstration flights by our own EXPORT: Over 350 U.S. ranges from O.S.50. R/C. expert by requirements one source. One invoice! One O.S.58. R/C. ιδ π α Shipment. Best export discounts. Merco 4v Twin plug. HORRY POXY finishes—complete range in stock and Monocote. Merco61 Twin plug t e a POLKS Mc^ L HOBBIES .hc t o 314 Fifth Avenue, New York N.Y. 1001 2 MANOR COURT, HIGH STREET Cobks : POLXSMOD Telex : 22-4865 M IL D E N H A L L ,S U F F O L K Tel. 3244 Anytime

M.A.P. INSURANCE MEMBERSHIP FORM

£ 5 0 , 0 0 0 I PART I. TO BE HANDED TO NEWSAGENT

T o ...... INSURANCE · Please "reserve/dellver on« copy of *AEROM ODELLER/M ODEL BOATS/MODEL CARS/RACIO CONTROL MODELS * ELECTRO- NICS/M ODEL ENGINEER/M ODEL RAILW AY NEWS commencing We are able to offer a £50.000 thirC party insurance to our readers! This magnificent scheme which with the ...... Issue. ("Delete at applicable.) cover* modelling activities within Great Britain, Northern Ireland. Channel Islands and the Isle of Man. has been negotiated with a leading insurance Company to provide Name exactly the cover which the Air Ministry rcquires when its airfields are used for model flying. It ii also sufficiently Address ...... embracing to cover all other forms of model activity, and to should be completely acceptable to Local Authorities. PART II of the Form should be completed and sent to us at the address below together with your remittance of 2/6d. PARI I All that is necessary for you to do to obtain the bene­ should be handed to your usual supplier, either newsagent, model fits of this magnificent cover is to complete the forms at shop, bookseller or wherever you normally expect to get your the right of this announcement, sending the first part to us magazine. together with your remittance of 2/6d. which covers you for one year, and handing the second part to your usual magazine supplier. Whether or not you already have an order in hand for the regular supply of your magazine, this form should still be handed in and your dealer will PART II. TO BE SENT TO M.A.P. LTD. adjust his requirements according to whether you are a new customer or merely continuing your old arrangement. N am e (in fu ll) ...... This insurance is the prudent thing for every modeller to take out. By joining M.A.P. 'Modellers’ Accident Protection Address you come into the world's BIGGEST MODEL CLUB. For your initial subscription you obtain a lapel badge for ...... D ate ...... identification and transfers to put on your model. Complete your form and send off at once. We will I enclose herewith postal order value 2/6d. for membership of send you back your membership card, lapel badge and M.A.P. £50.000 Insurance scheme. This sum, I understana, waterslide transfers immediately. Insurance period com- Includes two transfers and a lapel badge, and Is conditional upon mences immediately. Renewals will normally be made my ordering. from nearest quarter day. and renewal reminder notices • AEROMODELLER · MODEL BOATS * MODEL CARS · duly sent. RADIO CONTROL MODELS * ELECTRONICS * MODEL ENGINEER · MODEL RAILWAY NEWS ("Delete those not Model Aeronautical Press Limited applicable.) I have today Instructed my new sagent ...... 13/35 Bridge Street, to deliver m e th e m agazine ...... until fu rth er notice. Hemel Hempstead, Herts.

Made and printed in Great Britain by Impress (Worcester) «Π hlylton Road, Worcester, for the Proprietors. The Model Aeronautical Press Ltd.. 13/35 Bridge Street, hemel Hempstead, Herts Published by the Argus Press Ltd., 23/37 Tudor Street, London. E.C.4.. t9 whom all trade enquiries should be addressed. Reg ered at the G.P.O. for transmission by Canadian Magazine Post P47D. REPUBLIC P47 MARKINGS SERIAL NO. 223038 Six variants drawn by W alter Wright •SONNY BOY' 73rd F.S.. 318th F.G. SAIPAN. 7th A.F.. 1944. (NOTE: White wing tip and white band top and bottom of tailplanc. also ·. . .. white band round fuse- lag»» m v»»rt olive drab area only, not on under- sides.)

P47D. SERIAL NO. 28145. •FIERY GINGER’ OF 343 SQDN . 348th F.G.. — i 5th A.F. 1943. (NOTE: All white tail- plane and white win? leading edge.)

P47D. SERIAL NO. 276055. 342nd F. SQDN 348th F.G.. 5th A F . 1944

P47D. SERIAL NO. 224620. 61st SQDN . 56th F.G., 8th A. F. HALES- WORTH 1943 ( NOTE: Large insignia under wings, also white THUNDERBOLT I. round tailplane.) HB975. W K-L. ROYAL AIR FORCE. S.E.A.C. 135 SQUADRON. jUMCHAR AND AKYAB. 1944-45. (NOTE: Five white shells below and forward of cockpit, see separate detail of a shell outline.)

P47D-25-RE. OF THE 1° GRUPO DE AVIACAO DE CACA. BRAZILIAN AIR FORCE. ITALY 1942. , ΊίίΓ ^vU·, ; -·· ι Μ β μ κ Ζ

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CONTROLINER

RADIAN stunt model FIREFLY TALON with coupled wing flaps and elevators Slum model with “profile” Combat desgn of considerable type fuselage, specially dc- strength. Easy and quick to The latest thing small stunt controllers for 049 motors. . signed lor engines under I build. A fully aerobatic model Kit contents include die-cut parts, stunt tank, preformed \ c.c. Kil contains die-cut that is great fun to fly. For 2.5 U/C, formed canopy, all hardware, full size plan vs Ρ»Γ*· I 0 0 to 3.5 c.c. engines. . and instructions. 22'' wjngspan Wingspan 20'. 17,7 Wingspan 32". * s>

Outstanding stun; model featuring combined wing flap and elevator control. Wing ribs, for-; mers. etc., die-:ut in 1 highest quality balsa. For 2.5 to 3.5 c.c. en­ gines. Wingspan 41". PHANTOM MITE The Phantom Mite is just about the toughest model available to the newcomer to control line flying v Features all sheet construction ^ with wings, tailplane, fin and ^ fuselage sides ready to cut to ^ shape. For .5 to .8 c.c. NS. Wingspan 16 17/9

IDEAL FOR DEMON MARQUIS THE NOVICE Class A team racer to the new S.M.A.E. Λ very fine looking stunt model with attractive specification. Kit contains die-cut parts. For semi-scale lines, featuring tricycle undercarriage engines up to 2.5 c.c. Wingspan 30". - and extra large cockpit. For 1 to 1.5 c.c. engines. Wingspan 30". 40 /-