FEBRUARY 1961

ull Gloster VI details inside Mote poto& ifa tfiw i Huntetf with new^/^f/^^glowplugs

• precision made by K.L.G. • special new elements for easy starting and extra performance. • pressure tested to ensure long life. Here's great news for all glow enthusiasts. The technical skill of world famous K.L.G. now combines with the engine ‘know-how’ of Davies-Charlton to produce the finest glowplugs that money can buy . . . and little money at that! at your local Model Shop N O W !

For the Beginner—the E.G.98, a special casy-to-start plug designed for dry battery operation. Its low consumption makes it ideal for the small glow engine such as the Bantam, on which it is standard equipment. For the Expert—the E.G.99, a high performance, long life plug for the larger glow engine, designed to stand hot fuels and high revs—and give those extra revs so essential to the enthusiast.

type E.G.98 (short reach 1 -3 amps 1$ volt) type E.G.99 (long reach 2 4 amps 1 k volt)

for all that’s best in power flying

DAVIES-CHARLTON LIMITED Hills Meadow Douglas /&300 February, 1961 57 MSULBH

This uη retouched photograph... proves that these inexpensive kits build up into really beautiful models

The plane shown is a l l " Piper Family Cruiser made from a K K Junior F/S kit

JUNIOR FLYING SCALE SERIES FOR THE KEEN YOUNG CRAFTSMAN

m If you enjoy making models that are really accurate replicas of the full size aircraft — then these are the D.H. CHIPMUNK 20r cpan kits for you THE COMPLETE RANGE CONSISTS OF: RUBBER POWERED (Average span 20") Arrow Luscombe Silvaire Beechcraft Bonanza Lysander Cessna 140 Globe Swift D.H. Chipmunk Mustang Erco Ercoupe Nieuport (1914-1918) S.E.5 (1914-1918) Fairey Junior Sopwith Camel (1914-1918) 19" span Messerschmitt M.E.I09 Fokker D-8 (1914-1918) Focke-Wulf 190 Percival Provost Spitfire Piper Family Cruiser Hawker Hurricane Piper Super Cruiser Ju 87b Stuka Stinson Flying Station Wagon

JETEX 50 POWERED (Average span 15") Attacker Skyray Avro 707A Mig 15 Fiat G80 Panther D.H. Venom N.A. Sabre D.H. Sea Witch A LL PRICED at 4/2 EA C H (except Stuka and Sea W itch at 4/6)

See them all at your nearest model shop

FAIREY GANNET 20" span c m & r n it THE GREATEST NAME IN MODEL KITS it

Kindly mention AERO MODELLER when replying to advertisers 58 February, 1961 J j a a i M a

J u s t GLUE IT t P A IN T , F L Y I T !

V KWIK-FIX

To build? Simplicity itself!—This Control line kit has all the work done for you ' Wing has finished aerofoil section—even the hole drilled for the fulcrum. Fuse­ lage fully shaped, hollowed and slotted Pre - formed undercarriage with Sorbo wheels all ready to tit—All necessaiy wire and hardware parts—Bright checker trans-

Ask your Dealer for Latest Free Pocket Folder—Over 100 kits to choose from.

MODEL AIRCRAFT(Bmouth ) L™ .A. NORWOOD PLACE· ' Phone: BOURNEMOUTH 43061 Wholesale Only A t 16 ’s learning a trade in the cockpit of a jet fighter—

he’s an apprentice in today’s R.A.F.

The best trade training in the world found. You don’t pay for food or rent so all your Keeping the aircraft of the at pay is pocket money. peak performance is the great responsibility of the Plenty of sport, good food, good friends craftsmen in the R.A.F. If you are between 15 Sport is well-organised and you can play practically and 17 you can train as an apprentice or boy everything in the book from soccer to water polo. entrant to become one of these craftsmen. And when it comes to food the R.A.F. is absolutely In the R.A.F. you learn your trade under unbeatable. You often get as many as ten main first-class instructors— but you’ve got to be good dishes to choose from, and the amount you can to get in. eat is up to you. People who are up to the R.A.F. standard are You will make a lot of good friends in the worth good money— and they get it. For example, R.A.F.— boys who like working with or near when you are 17! you get £6.9.6. a week, all aircraft all the time. Just like yourself.

TODAY’S TOP JOB IS THE R.A.F.

Thr»e are th t trade· the R.A.F. can train you In: AIRCRAFT ENGINEERING. RADIO ENGINEERING ARMAMENT ENGINEERING ELECTRICAL & INSTRUMENT ENGINEERING. GENERAL ENGINEERING*. GROUND SIGNALLING*. MECHANICAL TRANSPORT*. ACCOUNTING AND SECRETARIAL. SUPPLY. DENTAL*. PHOTOGRAPHY*. CATERING*. NURSING ATTENDANT*. T h e __..ψ- Underline the ones lh.it Interval you. * Bo/ Entrants onl/. ♦ Apprentices only. Pie use send me, nithout obligation, details of training as an Apprentice or Boy Entrant. . R o y a l NAME______ADDRESS ...... A i r F o r c e DATE OF BIRTH______Send the completed coupon to: R.A.F. Career* Information Centre (AM 114u) Victory House. KinRsway. , W.C.2.

Kindly mention AEROMODULLER when replying lo advertiserv 'j S R m m 60 February, 1961

ARM Y A PPR EN TIC E surveying with ThcodolitO 16-AND ON A SURVEY JOB! Today it's training. But soon lie'll be serving with a first-rate engineering unit. At 16, he’s already chosen his career is well on TO THE WAR OFFICE J.uNOoN. S.W.I t he way t o t he top. PIcaso send mo lull details of Army Apprentices — without, obligation. WHAT ABOUT YOU? If you're between 141 and 161, are NAME ambitious and technically minded, an Army Apprentices' School could well he your start on a top-line career. There’s first-class training in any one of 40 trades (from Bricklaying to Electronics) Ai>imi:ss and you're paid as you learn. Board, lodging and uniforms are free—-with two months* paid holiday a year. Later—as a top technician —you can earn up to £20 a week ... more if you become an officer.

INTERESTED P Post this coupon today— (Applications for next entry in April 1961 must be sent in by 13th March 1961 —or AC.K earlier if possible ). ΛΑΙΟ A M.

KinJlv incur ion A KRO MO /)/;'/ / / R when replying to advertisers A new range of fu lly|||i fuel-proof dopes is just announced|^| by Humbrol. Having undergone^P intensive tests, these dopes provide|||3 a superb colour finish that ίβ : | | 1 completely unaffected by any of fuel, and is extremely durable,?;'| Excellent flexibility prevents k c o lo ur A flaking or cracking under ϋ m stress. This colour ' ^ dope is the finest^| formulation yet developed to give *5 a measure of .··.·« fuel-proofing n o t’.,;] possible to attain pT| with a previously known colour dope. Both dopes are /Ι flpM ■quick drying, economical to use*'p.lj g t u t y r a t e and easily applied by brush or/ spray. They must always be 9 ύ used together: preparation and,;M m shrinking of the tissue should CLEAR DOPt JiHRlNKlHGK be carried out by application o f $ j | the Butyrate Clear Dope before'^ finishing with Colour Dope* Available in gloss red, yellow* (_>■$ blue, green, grey, black,· ^ white in handy 2-oz. tins* * m

Cellulose Dopes^ ^ by the makers o f | | Humbrol Plastic Enamels^ . The Humber Oil Company Ltd.Jl (Paints Division), Marfleet, H u l l | | 62 February, 196

«B R A N D X »

To anyone who watches commercial television and that must include most aeromodellers “ BRAND X ” is extremely well known. Perhaps you are one of the tens of thousands who wait hopefully for the day when the housewife chooses the wrong pile? Nevertheless, a brand name is important. A brand name is a guarantee of quality, with the product it represents backed by the reputation of an established firm. You choose wisely in choosing a branded product, with any article. In the case of Balsa—where the choice is more important than with many other materials the SO LARBO brand name is your guarantee of consistent, high quality. SO LA RBO BALSA means balsa specially selected, graded and fabricated for aerom odelling use, in the w o rld ’s m ost up-to-date factory of its kind. The SOLARBO brand simply means there is no better Balsa.

ALWAYS ASK FOR BALSA BY NAME -

Kindly mention AEROMO DELLER when replying to advertisers a a a s February, 1961 63 O s a m a s

Believe it or not, the nearer one That’s how wonderfully realistic Airfix models are! Close attention to is the Airfix model of the every detail gives them their faithful-to-thc-original look—makes them Bloodhound. I /72nd scale true collector’s pieces. And every Airfix scries is to a constant scale. (Kit 2/-). Behind it is a picture This means Airfix models look proportionally right, one against another, of the real tiling. because they arc right! You can’t beat Airfix for realism or value.

STOP PRESS!

Constant Scale Construction Kits Latest Airfix Production I tom Model Λ. Hobb\ Shops. Ton Shops and I W. Wool won h

There arc over tut) Airfix models from 2/- to 10/6.

A truly magnificent I 600th scale model of the famous battleship sunk in 1941. The 133-piece kit makes up into a I7£" model which actually floats! The accuracy of detail is incredible, even for Airfix: individual deck planks and anchor chain links are clearly visible, and the main gun turrets revolve. Complete with adhesive 6 -

Kindly mention AERO MO D ELLER when replying to advertisers 64 February, 1961

The rretr of a >'.· < Vixen prepare J>>r take-off as a ilweaneer passes overhead. Fly as an officer in the

Today (he aircraft carriers are the capital ships of with four Ordinary levels only, if they are otherwise the l-’leet, and (he most· advanced jot. aircraft are exceptionally suitable candidates. Applicants under in squadron service in (he Fleet Air Arm. th·· old regulations will continue to be accepted Flying superh aircraft such as the Sea \ ixen and until 1st September. I lib I. A high standard of physical the Scimitar (and soon the Buccaneer) isa hand-picked fitness is necessary. team of otlicerswho are among the most highly skilled When qualified, pay at age 20 is £049 a year: u pilots and observers in (he world. married ollieer of 25 can receive up to £1,700 a your. Training as a Naval Ollieer in the Fleet Air Arm After 12 years* service there is a tax-free gratuity of includes a six months course at the Britannia Boyal £ Loon. Selected ollicers serving on a 12-year engage­ Naval (\ >liege. Dartmouth. You must possess above ment may have the opportunity of transferring to a average intelligence, resourcefulness and character, ]tensionable career. and have a spirit of adventure controlled by a strong Special 5-year commissions for Helicopter Pilots only. sense of responsibility. Thore is a now scheme of engagement for men Tf you have a zest for (lying and are attracted hv wishing to specialise as helicopter pilots. They join the Naval wav of life, you will find that the task of between ages 17—20on a 5-year commis­ the Naval OlVieor in the Fleet Air Arm is exciting, sion and receive £775 tax free gratuity exacting and singularly rewarding. on termination. The age limits for the Fleet Air Arm are 17-25. Send for the new illustrated booklet which You must have a t!.( Mi. or equivalent with passes at trill (fire non fa ll details. the Ordinary level in Knglish Language, Mathe­ matics and three other approved subjects. The The Admiralty, D.N.R. (Officers), Dept. AM/20 Admiralty will however be prepared to consider boys Queen Anne’s Mansions, London, S.W.I.

Kindly mention AERO MODELLER when replying to advertisers February, 1961 65 ^ a a a a a a a

SPITFIRE •cjy FA M O U S THE STOIIV OF Λ FAMOUS Fit* I IT Fit

lt> ItriMT K o I m -H s o i i

THE STORY OF THE SPITFIRE AND THE SEAFIRE; THEIR DEVELOPMENT FROM THE SCHNEIDER TROPHY CONTESTS, FROM MERLIN TO GRIFFON ENGINES AND FROM MACHINE- GUNS TO ROCKET PROJECTILES. TOLD IN 100,000 WORDS, 275 PHOTOGRAPHS. A TYPE-BY-TYPE REVIEW OF ALL SPITFIRE AND SEAFIRE MARKS, 30 FULL-PAGE 3-VIEW TWO-TONE REPRESENTATIVE PAINTINGS AND 56 PROFILES SHOWING CAMOUFLAGE AND SERIAL VARIANTS. THIS BOOK HAS TAKEN THREE YEARS TO PREPARE, SIZE OF B O O K IS AND HAS BEEN PRODUCED BY THE ONLY FIRM IN THIS 85 x Ili , CLOTH COUNTRY WHICH SPECIALISES SOLELY IN AVIATION BOUND IN STIFF HISTORICAL BOOKS, OF WHICH OVER A QUARTER OF A BOARDS W E IG H T 2$ MILLION HAVE BEEN SOLD DURING THE PAST 25 YEARS. LBS. PRICE 45/- \RLEYFOK» PUBLICATIONS LTD. m n . .l.ns.i iim m oitui. iii:itnoiti>smiti;. ι\<.ιν\·»

INSIST ON the finest equipment for the model maker!

TOP QUALITY GUARANTEED EQUIPMENT SPECIALLY DESIGNED TO MAKE THE MOST OF YOUR MODELS AND IMPROVE THEIR ALL ROUND PERFORMANCE.

E.D. DIESELS

Illustrated are the latest additions to the famous range of E.D. Engines. The "SUPER FURY" and the "BEE" are both having enormous successes while the 2.46 c.c. "RACER" Marine Engine is in great demand by model boat builders. Air-cooled or water-cooled versions of all models arc available.

E.D. MULTI-CHANNEL RADIO CONTROL UNITS Entirely new equipment produced after months of experiment, research and exhaustive flying tests. They arc the most advanced Radio Control Units availabef anc arc up to the traditional high quali'y and value always associated with E.D. Products. Write for full details.

ELECTRONIC DEVELOPMENTS (surrey) LTD. is l a n d f a r m r o a d , w e s t m o l e s e y , s u r r e y . aajj'jiLiaa 66 February, 1961

WATERCOOLED VERSION: Price complete with flywheel, P.T., postage and packing £9 : 16

WATERCOOLFO WITH FORWARD FLYWHEEL for more convenient starting is also available, price inc. flywheel, P.T., postage and packing. £ 1 1 : 8 BRITISH PATENT WIN No. 747732 TH R EE BEA R IN G THREE CRANKSHAFT BEARING A LL BALL RACES CRANKSHAFT ALL VITAL STATISTICS: Capacity: 7 c.c. (6.92 c.c. actual.) Weight: IS oi. BALLRACES Engine bearers: Fixing holes Ij in. centres laterally and longitudinally. Max. height ow is the time with the long dark evenings before 3) in. max width (excluding you to plan that next season’s model that is throttle toggle arm) 2| in. Recommended prop. 13-8. going to carry all before it ! Whether it is to be Recommended water-screw: 2) x 2j (2-bladcr). a rakish boat, a multi R C plane, or just a sports model for fun on the local field or water, its power unit will be the deciding factor in your future pleasure with it. Be wise, decide on a TAPLIN TWIN, lots of other people have to their TAPLIN ACCESSORIES abiding joy; we are confidenl AIRCOOLEI you will find it a particularly New! New! New! Magnificent! VERSION: TAPLIN UNIVERSAL JOINT Price complete as willing worker, with cjood looks, \ trouble-free operation and a host Built exactly like a full-size job with g in. shown, inc. P.T., postage and packing. thick leather insert capable of up to 30 ■ i; J of other points to recommend,it. deflection; connectors threaded 4 B.A. to £8 : IO If you are one of the dwindling take prop shaft and £ B.S.F. to engine. number who have not yet acquired Suitable all engines 1$ to 10 c.c. Heavily a TAPLIN TWIN may we point out some of its special features plated metal parts, dia. I in. Price 7 6. Wide speed range (S00 7,000 r.p.m .); barrel type carburettor (infinite adjust­ ment just like “full-size') quiet running; no vibration; clock or anti-clock STAINLESS STEEL TWO-BLADER running; handsome with anodised heads and spinner; easy starter; simple WATERSCREW: synchronisation : Recommended fuel : Mercuty Marine Diesel Fuel. Matches the T.T. engine, 2γ in. dia. Order safely by post since we guarantee satisfaction or money back. We 22 in. pitch; tapped 4 B.A. Price 9 6 will send yours anywhere in the world securely packed and insured, or just inc. P.T. round the corner. You will find new enjoyment in your modelling with a TAPLIN TWIN—try one and see. SILENCER: Nickel-plated Burgess type with Birchington Engineering Co. Ltd., centre baffle. Length overall 6 in., BIRCHINGTON, KENT Tel.: THANET 41265/6 dia. If in. Price: 4 9 inc. P.T.

80 c.c. TANK: °lease send me a TAPLIN TWIN (Standard: forward Flywheel) (Delete items NOT required.) Nickel-plated 80 c.c. with Terry STAINLESS STEEL TAPLIN WATERSCREW Taplin Silencer Taplm Tank: Taplm Universal Joint. fixing filler cap. Length 4 in., o.d. enclose cheque,-money order value ...... I f in. Price: 4 9 inc. P.T. NAME ...... Add part cost postage and packing ADDRESS ...... with orders under £1 m m February, 1961 67 T & u u i a

with these super sport models! row κιικι» 11 v m u m ; i:\ m \ i:s I Oil PEAK ri:moit>i\\

• T U T O R ’ (39" Span) CABIN SPORT MODEL

FROG "80 D” .8 c.c. W t. 1.9 oz. B.H.P. .065 at 12.000 r.p.m. Especially suitable for free- fight scale models. Exhaust stacks for clean running. Vibration-proof m m m compression screw. High duty syn­ ‘N IM R O D * (30" Span) CABIN SPORT MODEL thetic rubber contra-piston seal. 46/- FROG "100 Mk. II” I c.c. Wt. 3 oz. B.H.P. .104 ot 15,000 These top-quality kits represent the finest value obtainable. r.p.m. Easy to start—ideal for the They include balsa and ply parts READY-CUT TO SH APE, ''TUTOR". 53/4 covering tissue, wheels, all other accessories and a fully illustrated full-size plan. •t u t o ii* A 39 span free flight cabin model, easy to build, and ideal for beginner or expert alike. W ith top performance and stability, this model is ideal for .8 c.c. - I c.c. engines, especially the FROG 100 Mk. II *1 • b l i * (I c.c.) or the FROG “80 D" (.8 c.c.) diesels.

'iMMIIOir FROG “ 049 RG” .8 c.c. Wt. 1.9 oz. B.H.P. .06 at 15,000 "Nimrod", a 30 span free flight cabin model is specially suitable for r.p.m. Ideal beginner’s engine, easy the beginner. It is easy to build, and stable in flight, with a sports to start, smooth vibration free performance. Suitable for "0 4 9 " engines, particularly 1 ^ /4 * running. Large bearing areas. Fitted the FROG “049 RG“ Red Glow Motor. u 4 j% P starter-spinner and starting cord. 49 6

TMDCWMAfiK Made in by INTERNATIONAL MODEL AIRCRAFT LIMITED 4 ψ 4· 4· ·!· 4· ·{. ψ 4 Ψ •I* •I· i ® iip 5

4* 4· 4* 4* 4* 4* 4* r r 4» 4* 4* 4* 4* 4- 4* 4* 4* 4* 4* 4* *r 4* 4* 4* 4* 4* 4* 4* 4* 4* 4* *r 4* 4* 4* *F + 4* 4* 4* 4* 4* 4* 4* 4* 4*T 4* 4* *5· ·*· 4*4· 4* ·{·4· 4* 4* 4* 4* 4* 4* 4* 4* 4* ·:· 4* 4* 4* 4*Ψ 4* + 4·Ί· 4* 4· ·:· 4* ·{· 4* 4· 4* 4* *5* 4* 4* 4* 4*·!· 4· 4* 4* 4* 4* 4* *1· ·!· 4* 4* 4· 4* 4* 4· Ψ 4* 4· 4· 4* 4* 4* 4* 4* *!· 4* 4· 4* 4* 4· 4* 4* 4* i . »j. .r. The BEST further sign.v is sent) for elevator m m , engine control·, a.r brakes, brakes, control·, a.r engine , m m elevator for sent) is sign.v further Callers byappointment only. rfas mlfe rt r nyaa'bei h etaiig version. neutralising only are inthe 'ableava urits Amplifier flaps or sn (o rde, lvtr alrn) o Nnnurlen «ni a «until eng Non-neutral or ailerons), elevator, , (for ising fits iM'Je Servo case. TRANSMITEScase. Servo ava.lable mfitsare iM'Je 8 HI H IG H 289 o ie a'itral teghndcakhf o hg od working load high for crankshaft strengthened internally wal' fined Now A T E t RM RAC( TRAM STURT · ttB P S W H A T E V E R Y O U R C H O IC E — TH E E TH — E IC O H C R U O Y R E V E T A H W ETA LEADS, W H Y N O T IN VEST VEST IN T O N Y H W LEADS, ETA ETA 29 ETA 19 ETA CARS RAMCO REAYLESS ELA R O C M A BR p.t. 18/11d. plus £5.1.0. 15D ETA COMBAT 4 . A WORLD ψ .}. .j. .i% . *j. · 4 * r^n* w « · n the in l'> «II:i>W*« .Ί' . **r ■'it· (■οηίΑΧνν· -«vUo*i l » '««fM ·}. .{· 4*4· 4· 4* 4* 4* 4* 4* 4*4· 4· 4* 4· 4* 4* 4* 4*4· 4* 4*4· 4· 4·4* 4· 4* 4· 4* 4* 4*4*4*4*4*4*4*4*4· W A V i f S'ί S « Ι Λ * ·:* · *.■·■'»· · TET · RS ENGLAND of 8:to. D N A L G · N E · ERTS H D R O F T A · W STREET .. ple t h. .. only U.K. the. to applies P.T. INSTRUMENTS O! N RELAYS? NO - WOT!

·

HVDROPLAHtS 51. ls£.. p.t. £1.2.5 plus £5.19.6 £5.14.0 plus £1.1.5 p.t. £1.1.5 plus £5.14.0 AI CORTROL RADIO L PREVI SED EQUI LL AVAI E L B A IL A V A L IL T S T N E M IP U Q E D E IS T R E V D A Y L S U IO V E R P LL A f O fR POW jf F xsig uaic. mlfe unit Amplifier Duramiics. existing o ehre er fo AC mains. AC. from Dears recharge to 1.5 unit volts Rectifier Tr and (cl bias; for an smile operation Receiver for valve Receiver for used I operation. {o) vial eaaey o ovrin of conversion for availableseparately is uni: amplifier The ban*. •aced reed unit plusamplifier asistor 6-tr.v mitc. famousDura- the as basicServo same rm hs Das ospl 3 volts 30 supply to Dears, these from hc dc nt eur a pi msu- split a require not docs which I T . (h) Η T. converter, operating operating converter, ΗT. (h) . T I BONNER PO W ER SUPPLY SUPPLY ER W PO Da Cis 4 sd o Servo for used (4 Ceils Dcac 5 * f i Ed Ed LL WI RE IR H S T IL W · L IL H K R A L TRANSM ITE ic the the ic ITE TRANSM ' · < ■I » V e n JOHNSON JOHNSON 7 versions, Neutral­ versions, UNIT

contains; contains; ? W O N * F O © (■»·.

. D T L 68 otne n rdcin s og s hr i ay demand. any is there as long as production in continue RI 4 6 8 n 1-hne Rcies ih eas will relays 10-Channel with Receivers and 8 6,ORBIT 4, rcs n eus,SeiyTx ad r .. Retail. U.S. or Paid Tax Specify request, on Prices All prices and specifications subject to change without without change to subject specifications and prices All KIT ORION 6-TRANSISTOR AMPLIFIER arrange their own importation—will beAmericancharged importation—will own their arrange TRANSMITE Non-neutralising TRANSMITE Neutralising seas customers—and British customers preferring to to preferring customers British customers—and seas OE SUPPLY UNIT POWER over prices following The repayable cent, charge, per 20 service of plus Balance, payment on deposit. available acces­ engines, now kits, arc sories, equipment, American quality Top eal rcsa hw n brackets. in as prices shown retail RECEIVER SUPPLY POWER 10-Channel RELAYLESS 10-Channel TRANSMITTER I months.2 RDO CONTROL) (RADIO combo price combo UNIT RECEIVER of S I960 SMAE SMAE I960 S of Sm ith and his N IG -N O G , , G O -N IG N his and ith Sm < Shelley. H am ley & ley am H

■f 4- 4- 4- 4- 4-4-4- 4-4· 4· 4-4*4- 4-4· 4* 4-4*44· 4· 4* 4*4*4· 4*4 The choice of the champions. . . Below you can read the independent opinion of Mr. A. Rivers, the world famous designer and manufacturer of the renowned Silver Arrow and Silver Streak high-performance racing diesels about the lubrication requirements of his motors. His conclusion is the same as that of the world's leading racing motorists : there is nothing to equal CASTROL in any highly stressed engine.

From the earliest days of motoring, whether competitive or every-day usage, CASTROL has been recognised by all discerning motorists as giving the highest standard of lubrication it is possible to obtain in any engine. Discerning Modellers know the same thing. YOU CANT BEAT CASTROL. Castrol M is the grade of castor oil specially recommended for all model engines, and it gives your motor that EXTRA PROTECTION for the following reasons:— 1 CASTROL “ M" has a high Viscosity index which means that it maintains its lubricating properties at the highest engine temperatures that are likely to be encountered. 2 CASTROL "M“ leaves no sludge in your engine because during its refining process it is fully de-gummed. 3 CASTROL "M" is absolutely consistent in its quality. You can therefore rely on any batch of fuel blended with CASTROL “ M“ to give you the same high performance and degree of motor protection that you need. IN YOUR RIVERS ENGINE USE MERCURY No. 8 FOR RUNNING IN AND MERCURY RD FOR PEAK PERFORMANCE. BOTH THESE FUELS ARE BLENDED WITH CASTROL “M“.

TYPICAL ENGINE EON WHICH CAST/tO L M IS THE FINEST LUBRICANT

“Bert" Rivers says:— The Rivers Silver Streak 2.5 c.c. “Having spent literally hundreds of hours racing diesel. One of the world’s most testing different fuels (branded and our own successful Team mixes) with oils ranging from 10-20 grade Racing motors. to silicone oils at an unmentionable price, we arc of the definite opinion that Castor based fuels are the best and that is why we specify CASTROL "M" for long engine life

“B en" Rivers congratulating M.Smith and adequate lubrication at high speeds D Balch on having won the and temperature." F.A.I. team Racing event at the British Nationals I960.

FOLLOW THE LEAD OF THE CHAMPIONS AND ASK FOR CASTROL BLENDED FUEL BY NAME I W i E Ε Κ €£ U R Y H eard a t th e H angar D oors

Public relations O ne of the more interesting occupations of the editorial stalT of this magazine is that of reading the many area and club news sheets and bulle ins that arrive from all quarters of the world, and provide one with an intimate view of the happenings among Editorial Advertisement aeromodellcrs. Some include well-prepared drawingsofoutstanding Director Director models and we always endeavour to reproduce as many of these l>. J. Laidlaw-Dick.son C. S. Rushbrooke as we can in our World News feature. Often the published comment reveals less attractive political views, or is sternly critical of National Editor Association inactivity. Rulebooks arc regular scapegoats and quite R. G. MOULTON frequently the comments border on libel. These are small circulation bulletins, but collectively they represent the voice of all the active Editorial and Advertisement offices. 38 CLARENDON ROAD. WATFORD. HERTS and enterprising clubs. The fact that they air dirty linen in semi- Γ·ι kvhoni : WATFORD 32351 (Monday-Friday) public manner is good, for only by such criticism can the weak­ nesses of the movement be revealed. VOLUME XXVI What is not appreciated is that all these bulletins are produced No. 301 FEBRUARY 1961 at considerable sacrifice in time and trouble by keen volunteers. The amount of work required is incredible. A three-view drawing CONTENTS of a contest type might take five hours to stencil, and that is a lot HANGAR D O O R S ...... 70 of modelli . time for a keen man to sacrifice. RirZ WINGS ...... 72 "DONGUS” ...... 74 We arc most surprised, therefore, to learn that the production WHAT’S THE ANSWER? 75 staff of the particularly good Northern Area news sheet were JAGDSTAFFF.L MARKINGS 76 recently curbed in their enthusiasm. No doubt those who raised ENGINE ANALYSIS 80 P A W 2 49 Μκ. HI objections to expansion of size and circulation did so with good "NEW DEVIL” ...... 82 intent; but most certainly they must have been people who do not HELICOPTERY ...... 83 appreciate the value of Public Relations. They should try to AIRCRAFT DESCRIBED 84 visualise the amount of goodwill the voluntary effort is bringing to til.OSTCR VI "PEE-WIT" 86 their group, and also to take into account the instructive value. TRADE NOTES 89 Speaking on this subject of public relations reminds us that the PHOTO ALBUM ...... 90 MOTOR MART ...... 91 Noise Abatement Act is now fact. Over a year ago we forecast FUEL CONSUMPTION TESTS 92 consequences for the model world, but we have yet to learn of any MODEL NEWS ...... 94 silencer production to meet the problem. Perhaps Roland’s cartoon OVER THE WAVES...... 96 below will serve to illustrate a forecast of flying in 1965, by which WORLD NEWS . 98 CLUB NOWS 101 lime noise sensitive neighbours may well have chased modellers off the edges of these Isles ! ON THE COVER Artist Laurie liable v captures all the essence o f speed as the (Hosier Golden Arrow rounds a turning point over Cals ho i Spit I ig hi ship. Full details will he found on pages 84 and 85. AEROMODFJ.LER Incorporate* the MODEL AEROPLANE CONSTRUCTOR and i< published monthly on the 15th of the previous month by the MODEL AERONAUTICAL PRESS LIMITED Publishers of the monthly MODEL MAKER RADIO CONTROL MODELS AND ELECTRONICS SUBSCRIPTION RATE: (Inland) 28/6. (Over­ seas) 27/6 per annum prepaid including the special Christmas number. m m February, 1961 71

.\civ l]ng:iiio training more judges for our National events. Exactly a year ago, this column issued a challenge to But where are the judges to come from? Our appeal the first modeller making a glow plug version of the for qualified judges in the September, 1959 issue Hangar Epitrochoidal engine and this month we are very happy Doors columns met with no response and until the to say that the first such example has been successfully Society receives more voluntary effort from those willing tested in Poland. to qualify to judge such events, the situation will remain From Modelarz magazine we learn that Stanislaw as it is today. Gorski has made a 12 c.c. capacity version which has It.A.IVn.A.A. Cliangrc* developed I -5 horse power at 10,000 r.p.m. It is Now that Flt.-Lieut. Ted Norman has returned from emphasised that this is a prototype only, based on the his overseas posting in and is at R.A.F. Felix Wankel engine, but obviously, if it can be made Thorney Island, he has resumed his former office of to work in such small sizes, there is room for opportunity Competition Secretary in the R.A.F.M.A.A. This was among experimenters. decided by vote at the A.G.M. on December 16th and In brief, the motor is rather like a sealed crankcase Sqdrn.-I.dr. Eric Cable, who took over for the past year, with a triangular rotor revolving via planet gearing over is now Assistant Comp. Secretary. R.A.F. Champion­ the shaft in the ratio of 3 : I. There are three firing ships this year arc set for the provisional dates of 6th/7th strokes for each revolution of the prop shaft — no piston May, at R.A.F. Debden and an innovation in the and cylinder, and very few working parts. The design is Association is the acceptance of associate membership being developed by N.S.U. in Germany and Curtiss- for those related to holders of R.A.F.M.A.A. cards. Wright in the U.S.A. for vehicle and aircraft purposes. The postal contest system is to be continued through this winter, the next one at the end of January being for S.W.A.K. Change* F.A.I. team race and power and for the one at the end of Following the annual elections in the S.M.A.E. and February for $A team race and $A free flight power, the Annual General Meeting held in on plus open rubber. With prizes such as Cox Olympic December 4th, the Council of the Society now has two engines and Veco Mustang kits being offered, this should new names among the officers, and doubtless there are encourage greater activity at local stations. The R.A.F. to be a few changes among the area delegates. Our own M.A.A. is also offering to run $A team race at the British C. S. Rushbrooke was returned unopposed as the new Nationals and we hope that this will start the ball rolling Vice-Chairman and in his place as the new Records for more voluntary effort on the part of S.M.A.E. clubs Officer comes R. L. “ Dick” Taylor who is well-known and areas this year. for his speed flying interests and also as the son of the Many Thank* Society Secretary. Joining Dick as a “new boy” on Council is Sid Smced from the Surbiton Club, a veteran The Editor and staff would like to thank the many model llycr and someone with a unique experience as kind readers who were good enough to tell us how much far as the Society is concerned, that of organising athletic they enjoyed our enlarged December issue, and also sent meetings. This “apprenticeship” will stand Sid in very us so many Christmas cards, bringing an air of festivity good stead when it comes to dealing with the vagaries into the offices. It shows that at least some of our readers of our contest programme. In the vote. Sid Smced like what we have to offer even though we do drop received 62 votes to Mrs. Freda Shirt’s 11. Voting for the occasional clangers including the quotation of 60 x 100 post of Technical Secretary was more close, Sam Messom mm. cross section dimensions for team racers instead of beating Stewart Uwins by 37 to 35. Sam also gained the 50x100 in the F.A.I. Meeting Report, last month. necessary two-thirds majority in the ballot for the Sorry if we sent anybody into a panic; but then we S.M.A.E. Fellowship, so he now joins the honoured suppose that the cross-section area was enough to cause brethren. sufficient fuss for most people to overlook our little error! The Annual General Meeting was poorly supported It.A e.S. a<*<|iii*i

T he w in g construction which has become known See hig. 3. The frames are laid on top of these forms, over the past 25 years as the “ Ril/ W ing” is one of those being careful to line up the high point of the forms with odd cases wheie the by-product in this ease, the the wing tips. The frames arc then bound on to the form construction has become well known, while the with wide elastic tape, and the whole unit set aside to dry primary reason for the development of this construction at least overnight. has remained in the background. It was while searching for a construction that would enable me to use the ultra thin airfoil sections that I was developing at that time that I also developed the wide- urched sheet balsa outline with tips joined in an elliptical outline. The wide arched leading and trailing edges gave good load bearing qualities despite their thinness, while the joined tips helped to give sufficient torsional rigidity. I he first wings of this type were all for rubber-powered models, as this was in the pre-gas era in the early ’thirties. Basic construction of these units was a glucd-up outline of £ in. medium soft quarter-grained balsa. The leading edge was about I in. wide at the root, tapering to i in. wide at the tip, while the trailing edge was about 1' in. wide at the root, tapering to fin. at When dry, remove the frames, and cut slots, about the tip. The outline was usually a £ - $ ellipse to keep the ϋ in. deep in both leading and trailing edges for the ribs. centre of pressure line on an approximate straight line Wax the form, replace the frame on top of it, and pin from tip to tip, thereby minimising torsional forces. it in place. I he ribs are cut from 1/16 medium balsa like To make a wing such as this, proceed as follows: “indoor" ribs. Trim the ribs to length by cutting off The whole wing outline is glued up in one piece, and the rear, and glue into place. When the glue is thoroughly the centre section is also filled in with the sheet balsa dry, remove from the form, and taper the trailing edge as in Fig. I. from the top with a razor plane. Using a wide sandpaper block, carefully sand the airfoil to shape. Now the wing can be cut in half in the centre, the ends bevelled for dihedral, and glued together. Be sure to cover the bottom first, using thin cement so that when the tissue is doped it will not pull loose from the ribs. When wing loadings for Wakefield were increased to 8 oz. after the 1936 Championships, the wood for the wing was gradually increased to i in. with max. thickness for the airfoil section of about 5/16 in. The wing design, a double ellipse of 7 in. centre chord with a 42 in. span, To put the proper camber into the wing, the frames was kept standard for many years, and over 30 Wake­ are soaked in hot water and bent over solid forms that fields were built with this wing. The airfoil had evolved have the desired undercamber carved in reverse to the section, which had an overall height of 7 per Fig. 2. A somewhat simpler method is to cut a few cent, with an undercamber of 4 per cent. heavy rib forms to the undercamber shape and bind Using the thicker balsa for the leading and trailing the frames to these after they arc soaked in hot water. edges, l no longer bent the curve in, but carved the February, 1961 73

underside of the wide trailing edge with a razor plane to fit the template. The ups, however, when properly thinned down, were still soaked and bent, as the rest of the frame was pinned down to the form and assembled. I had learned by this time that the best way to get the airfoil section to the exact shape I desired was to band saw and sand 3 in. wide blocks to upper and lower templates, glue sandpaper to the face, and sand the wing finally forced to depart from the elliptical type plan- to perfect section with these blocks. form. as I just couldn't work anything practical into thc When I started flying the A, 2 class seriously, of course span I desired. So lor thc first time thc planform was I used (his same type of construction, except that it was straight for the main part of the centre panel, with only enlarged considerably. On the first Nordics, the leading the sharply dihedralled lips being joined in the elliptical edge was i in. \ I \ in., with the trailing edge t in. x 2 in. planform. The structure of thc wings was kept nearly Wing span was 72 in. of double ellipse shape with an thc same — the leading edge being of 5/16 in. x a in. hard 8 in. centre chord. T his made a very good windy weather balsa, with the trailing edge of 3 16 in. x 21 in. medium model, but as I worked toward better still-air time. soft balsa. The airfoils were again carefully sanded to I found that it was advantageous to thin the rear of the shape with the curved blocks Fig 4 to new sections section, as this seemed to increase lift and decrease drag, which I had recently developed. to accomplish this, the leading edge was upped to 3 in. All of my wings have been covered with silk for the of medium soft stock. At tins time the wing centre chord last lew years, as I have found that it stands up much was dropped to 7| in., with the additional area being better, does not add much weight, and Ilexes better with worked in nearer to the tips to make a planform fuller the wings in rough weather. The 1959 U.S. Central of form than an ellipse. This setup proved to have Slates semi-finals lor the International Team were flown many advantages, f irst of all, the hard leading edge in a 40 m.p.h. gale, and I think I was the only one of the took shocks very well and stood up wonderfully under flyers who didn't bust a wing. At times in thc tow the punishment that would have pulverised an ordinary wing. wings flexed to about 90 deg. dihedral (some of the flyers Also, the soft trailing edge stock was easy to shape to swore that the lips nearly touched), but the structure held. a good section, while the bulk of the large trailing edge For the future, who knows? All of the models on the kept the whole wing quite true. Next it was found that board at present — Wakefield, F.A.I. Power, and Nordic, these wings had very little tendency to warp, even under use this t>pe construction, which means that after about bad conditions. It was analysed that this was due to the 30 years of usaee I am just as sold on this type of wing fact that the balsa structure covered most of the curve of the airfoil section, and since the covering did not have as ever. ------G e rry Ritz to be pulled over curved parts, there was very little Photos show WaWrfield and AΊ with Rit* wings and ellipse ''machine” incentive to warp. It was a simple job at this point to fit above, commercial equivalents are available from artists' supply shops these wings to tongues, as all that needed to be done was to replace the four centre ribs with 3,32 in. ply ribs with slots cut in to lit the tongue. This construction was ver> simple, anti the strength and durability were excellent, so I determined to build all future models along this pattern. The centre ribs were filled in around the tongue with soft balsa before covering to make handling easier. It was in Autumn of 1958 by the time this Nordic model was quite well developed, and I had been having quite good luck with it. I flew it considerably all through 1959 and I960, and it won lirst place in 14 contests in that period. It has not been beaten in any contest to date! Important wins included the King Orange Internationals, and, of course, a place on the U.S. Nordic team in 1959 When 1 won the place on the team in the Spring of 1959, I set out to design a calm weather job to fit thc milder European weather. After much thought, I Was

Α»·υ« tcΛΟτς M 3 Q M 3 74 February, 1961

Jo in the Combat brigade w ith this hot design from two leading USAFE flyers

Don Pinckert and Gus Johnson

DONGUS

30£ inch span for

T he near domination by numbers of “wing” type from four centre ribs to accept I 16 in. centre section combat models is in itself a challenge to design talent. planking. Mark heavy reference thrust lines on the Add to that the many years of control-line experience two iin. ribs for motor mount alignment. (Mounts will of Americans Don Pinckert and Gus Johnson and align with these marks when in place.) Lay out the wing. what should come up but a model with a tailplanc ! Ensure inhoard panel is ,'m. longer than outboard side. This is no ordinary model. It screeches around behind Align and glue engine mounting unit to iin. centre ribs. a fast Fox 201, Vcco or ETA 19 and is popularly known Install controls. Glue gauze to tank then glue the tank locally as the Razor Blade Eater or anti-oil-burncr. in place. Cover the wing, tank and bearers with any good Tough, with built-in fail-safe features and a degree of grade of nylon. Cut sides using a rib template manoeuvrability at high speed that matches the tail-less for correct thrust alignment for tail. Install Jin. x 2in. x birds, Dongus is a type that many are looking for, and 5?in. fuselage lop and formers, then align and glue the we expect to see loads of them at the Nationals. The in place. Glue rudder and Jin. balsa fillets to simplicity of construction permits quick replacement top of fuselage with gin. offset. though, in actual fact, it bounces olf most prangs with Use nylon strips at all wing, rudder, tail and motor impunity. It depends on the individual building it, mount junctions. Cover fuselage, rudder and tail with of course, as to how tough the Dongus becomes. Silk, Jap tissue. Dope and fuel-proof the entire model until Nylon or Terylene covering make for extra strength all the pores are scaled. Install the engine with at least and the structure permits plenty of dope without warps. 5 degrees right thrust. Use any good glow plug 19 and Standard average speed of Dongus prototypes using an8\6nylon prop. Good fuel is 12 per cent, nitromethanc. K-k Methanc.x 30 per cent. Nitro and Standard 3 per 30 per cent. Castrol “ M“, 10 per cent. Nitro Benzine, cent, mixed in equal parts, is 86 m.p.h., which is faster and 48 per cent, methanol (or mix record Methanex and than most of the opposition. A fleet of them will be in Standard—50 per cent.). By all means modify anything, full operation by the newly-formed PASTE (First all but keep: speed team -Europe) — in the coming season. (a) Thick, well-rounded leading edge. Cut hardwood bearers Jin x Jin. x 6Jin. Glue to balsa (h) 2 inch wing olfset. plate measuring Jin. x 2in. x 4Jin. for engine spacing. (r) Lcadouts as indicated. Now glue Jin. medium balsa plates to each side of bearers id) Plenty of engine offset. to bring mounts up to 2 inches wide. Cut and notch ie) Weight no more than 15 oz. two Jin. ribs plus ten 3/32 in. ribs. Remove l/16in. Then this aircraft will ! go ! go Happy hunting. February, 1961 75

x A a i 'C ■&£> α * ζ \ * & τ γ W f. lik e frf.e- f l ig h t sports models in our dub and wc arc lucky enough to have a local ’drome to fly on. complete with runways for take-offs. Our main trouble is undercarriage design. One group believes in wide spaced undercarriages with the wheels well forward to help the model keep upright when landing. Another section say it is all wrong and you want the undercarriage well back for a snappy take-off. But their models nearly always turn over on landing. What's the answer?

W hat would you do in a cose like this? Turn the page for the solution to the problem, printed below.

i J3/wsuu jiio X aq ‘iOAOwoq ‘iqffuu aflRUJRajapun apXauj j o uffisap poofl v ■ Jiejun X||i;dj si punojfl qjoouis X||i>aj inq auiqjXiiR uo Suipunf A Question on lnajjad r a^mu oj ppoiu c jaadxa ot jeqi puiui ui SUuRaq ‘ppoiu jiq n o n ju d r jo j asiiuojdiuoa jsaq aqj puij 01 a.\eq jsnf preparation of noA jsXr.w q ioq \\ a\Rq louuea jsnf iioa ipRo/ddR aqj j o ]iq isn| aqi .jn o oj pjRoqi? lopd ou si ajaqi asmtaaq fluipuiq undercarriages uai|A\ ja\o ujnj ppoiu aqi a>p;uj oj puai saop ιηοΧιη r ipns ‘Xrs noX sr ‘jasawou ·}ρπ.ιι mojjru X[Jirj r puR — Xji.\rjS jo ajiuao for take-off and aqi j o iuojj ui ipniu Xja\ jou ojRS|aaq/v\ aqi jnqi os >pRq jpM touch down aSRijjRajapun aqi jurw op noX jgo-a>|Ri p o o S j o -j — 'ja.\\.suy wasMum 76 February, 1961 3-agbstaffel /llbarhings Useful scale details from A. IMRIE

the marking of the unit to which they belonged. L.t. Weiss of Jasta II, who flew a Fokker Dr. I (545/17) painted completely white except for the plain black crosses at the usual positions, is an example of this (May. 1918). Many leaders had their own colour scheme, in fact most StalTel leaders used contrasting schemes to their units so that they could be quickly identified in the air. Some Jastas used their original markings without change throughout their career, while others changed their Richthofen itand- marking several times during the few months of their ing beside hi» existence, this is also true of the individual markings, Fokker Or I, note the light coloured some pilots used the same marking regardless of aircraft undersurfaces. type or unit, other pilots again changed their personal (Pale blue) marking at will. It might be added that when speaking of a particular unit marking, the period should be mentioned Informa i ion on ihe markings and colouring of One of the first Jastas to use a special unit marking the German Jagdstuffcln of 1917 and 1918. have always was the famous Jasta II led by Manfred von Richthofen, been extremely hard to find, in the p;iNt many rough he had his Albatros Dill painted all red, so that he would guesses have been made as to the nature of these, with be more easily identified by his pilots as their leader, the result that a great deal of incorrect data has been presented. Most writers on German World War One and the unit flew in this manner for some weeks, but, aviation prefer to gloss over the subject, by saying that because his all red machine become so well known the the German scouts were painted ’ all colours of the other pilots in Jasta II felt that the enemy might sc: a rainbow!” This does not help the modeller who wants to trap for the red flier, and pleaded with Richthofen to finish his models so that they are replicas of the actual let them share the red colour, he only agreed to this machines that were in use over the lines, it is hoped however, if the other pilots used a distinguishing mark however, that the following descriptions will serve to in another colour, this they did, and describing the unit show how some of the German scouts were finished marking (Spring, 1917) Lothar von Richthofen writes: when they came on the strength of various Jastas. **. . . my brother’s aeroplane was all red, each of us Readers will be familiar with the factory finish of the others had a special marking in another colour, Schafer period, this has been excellently covered by P. L. Gray for example, had a black painted elevator, rudder and in his articles at the commencement of the Decor Detail rear fuselage. Allmenroder the same in white, Wolff scries (Nov. and Dec., 1957). also in his more recent green and myself in yellow.” Lothar goes on to say that writings on the lo/cnge pattern primed fabric. The yellow was the correct colour for him since he had come markings which follow were applied over the standard from the Yellow Dragoons. It is a point worth noting factory finish when a machine was collected from the that many pilots who transferred to the Air Service from Aircraft Park and allotted to a Jasta. the Army flaunted their old regimental colours on tlicir Tic first JagdstalTcIn were formed in the autumn of machines. Jasta II retained this red colour for the rest 1916, and by June. 1917, 37 were in existence, this of its career, although most machines in the unit only number had further increased to 81 by March, 1918 and had touches of red applied, Richthofen himself stayed at this strength until the Armistice. Many of these sometimes flying machines which were not all red Jastas did not have a unit marking, also many pilots did painted, as an example he scored his 66th victory (18th not use any individual marking, but this was generally March, 1918) on Fokker Dr. 1 152/17, and in his combat early in the period. With the increase in scout activity report describes his machine as follows: Red upper and the deployment of large formations, umt and per­ surface top wing, red cowling, red wheels and red tail sonal markings were most common, and were in fact a unit. The remainder of the machine being left in the necessity for identification in the air. factory finish of dark olive green on upper surfaces and Normally all machines in the Jasta carried the unit pale bue underneath. Photo (aboveleft) shows Richthofen marking, also most pilots had a special marking of their standing beside his Dr. I and the light coloured under own which was carried in addition to the unit marking. surfaces can be seen. These markings were generally neatly painted on, but The following Jagdstaffeln have been selected to show some photographs show rather rough markings which how varied both unit and personal markings were, have obviously been hurriedly applied. several individual pilot schemes have also been included. If these markings obscured the machine serial number, it was not normally re-marked, sometimes even the •VatfdNtaHVI €». Λ 1154:11 ist 1018 fuselage cross got in the way and was obliterated! Fokker E.V./I). VIII Differences in the application of the unit marking are This unit was completely equipped with Fokker E.V./ apparent, it being obviously left to the individual rigger D. VIII fitted with 110 H.P. Obcrurscl-lc Rhone rotaries to interpret the instruction relating to the marking as on the August 5th, 1918. An acute shortage of castor oil well as he could. Some pilots had special schemes of led to lubrication difficulties, and in ten days the unit their own, and these could be in complete contrast to experienced 30 forced landings due to engine failure, February, 1961 77 3 B IL 1 B Q this, coupled with the well-known wing defect caused the F..V./D. VIII to be withdrawn, and Jasta 6 reverted to Fokker I). VII biplanes on August 21st. Although only in use for the short period mentioned, the markings of the unit when using the E.V./D. VIII are interesting. These machines were covered with the lo/cnge pattern printed fabric, the tailplane and elevators carried the well known black and white stripe marking of the unit, as shown in Fig. I, pre­ viously carried on Fokker Dr. I and Fokker D VII, wheel covers were also striped, in black and white. The engine cowlings were painted red and white “petal” pattern as oppo­ site. The machine shown is Fokker F..V. 148 18 and at the time the photograph below was taken the pilot identification marking had not been applied. Fig. I. Unit marking of Jasta 6. (Summer 1917 - Autumn 1918) Pilot identification markings consisted of stripes and bands carried on the fuselage, four examples are given opposite in Fig. 2. (a ) White flash; (b) Black and white band completely encircling fuselage; (c) White Stripe extending aft to the stern-post; (J) Black and white bands completely encircling fuselage (Personal marking of I t. Wenzel), l.t. Richard Wenzel joined the Richthofen Circus at the beginning of April 1918 and flew for a short time with Jasta 11 on Fokker l)r. I. His personal marking consisted of black and white fuselage bands. This marking was in proportion to the Iron Cross ribbon, but was painted in reverse (i.c. black on the ribbon was white on the Fig. 2. Examples of pilot individual markings, Jasta 6 (August 1918) fuselage and vice versa). Wenzel had used this marking earner in Jasta 31, he was transferred to Jasta 6 on £1. Slimmer 1017 15.5.18, and continued to use this marking on l okker Albatros D.V. and D.Va. D VII, and as mentioned above on Fokker l .V. D VIII. At the beginning of Summer 1917 all machines of Jagdstafifel No. 21 had the normal olive green and mauve upper surfaces, under surfaces being light blue. Some had the fuselage painted olive green, others had olive green decking only, the remainder of the fuselage being left in the natural finish, others again had the whole fuselage left in the natural finish (varnished plywood). The unit marking consisted of a black and white ribbon going completely round the fuselage just aft of the cockpit. Pilot identification was by means of various insignia carried on the fuselage sides, in most cases this was carried between the ribbon and the fuselage cross, however, one photograph shows an insignia in front of the ribbon which is painted on the fuselage further aft than normal. Three examples are given in Fig. 3 overleaf. (a) Black monogram with white border carried between ribbon and cross on Albatros D.V. 2072/17, this machine had a natural finish (varnished plywood) fuselage.

Photographs. Top loft: A Fokker E.V. of Jasta 6 (148/18) August 1918. Below left: Lt. Wenzel’s Fokker Dr.l. Jasta I I, showing reverse Iron Cross ribbo n insignia (A p ril 1918) 80 February, 1961

ENGINE ANALYSIS No. 79

“Gig” Eifflaender’s latest diesel includes a lot of “ know-how” and offers loads of power for a comparatively modest price

2.49 c.c. M ark III reviewed by R. H. Warring T he P .A .W . S p e c ia l is a custom-built engine, trouble and was most consistent in performance at all produced and designed by J. G. (“Gig” ) Eitflaender and load speeds. The only point we could criticise at all shows every evidence of the care and attention it receives would be the compression screw which is small and as a consequence, as compared with conventional mass stiff to operate—and hence could be a little awkward production techniques. It is a “class” motor aimed at at times adjusting for high speed running. Hand starting top performance in the 2.5 c.c. category and since it was was accomplished in one or two flicks hot or cold (after introduced in 1956-57 the design has been somewhat priming) and there was no particular “bite” until 7 modified in detail, the current model available being inch diameter propeller sizes were reached. Hand starting the Mark III version which shows a considerable increase was still readily possible on 6 inch diameter sizes. in performance over the original model tested Running was smooth at all speeds up to about 15.000 (A eromooeller. December 1957). r.p.m. on straight fuel and consistent running could be The general design and appearance remains the same. extended well beyond this with a little more care and The Mark II differed from the original in a revision to adjustment, l or higher speed running a nitrated fuel the exhaust ports. The Mark III retains this modified proved beneficial in giving a little more flexibility to exhaust porting but also with revised intake and transfer settings and a very slight improvement in performance. porting. Also the front end of the shaft has been redesigned A certain tendency to vibrate was noticed between —this being a weak point on the Mark II—and there arc 9,000 and 10,000 r.p.m., but since this speed is well material specification changes. below normal operating speeds this has no significance. Test running was a pleasure. The engine behaved The engine sounded happiest—and certainly ran very splendidly throughout, started easily, could be adjusted smoothly —at higher speeds and was equally consistant positively to optimum settings with a minimum of in the region of 20,000 r.p.m. as at peak. Propeller test runs down to 8,000 r.p.m. were run with the same high degree of consistency throughout. lest figures indicate a peak B.H.P. figure of nearly .32 achieved at 15.000 r.p.m. We feel that this is not flattering the engine in any way as there was possibly a certain amount of residual stiffness holding the peak r.p.m. back slightly. W'ith extended running in*—and the P.A.W'. Special would appear to like several hours — prop figures could possibly be extended a further 500 r.p.m. or so and the peak h.p. improved in consequence. In any case, even the test figure achieved represents a remarkably high performance for any 2.5 c.c. engine. Torque is also well sustained at higher r.p.m. figures. H » to n t? /.» 14 >5 /* tf /9 It should be noted that .29 b.h.p. is available from f)PU THCV%ANOS 12-17,200 r.p.m. and .31 b.h.p. from 13,500-16,200 r.p.m. Free riiiiiiingr «liaft Although the P.A.W'. Special has the appearance of a plain bearing engine it does, in fact, incorporate a single ball race at the rear end of the crankshaft. This is housed in the crankcase casting and the shaft itself is deliberately February, 1961 81 mmm

made a free fit in the race. The remainder of the bearing no positive positioning for the cylinder, however, length is supported by a Meehanite bearing bush inserted dismantling of the engine must be avoided after running in the crankcase casting, reamed and honed to Finish. in. If this has to be done, cylinder position must be The crankshaft itself is of large diameter (.375 in.)t marked before disassembly and the cylinder reassembled stepping down forward of the bearing to a | in. diameter in exactly the same position as before. threaded length. The large induction port is rectangular, Construction of the P.A.W. Special is robust with chamfered ends, opening into a .2 in. diameter throughout, yet the resulting unit is not unduly heavy hole in the crankshaft. The Meehanite bush has a (5 ounces). From the engineering point of view a very matching rectagular port opening, although the bottom desirable feature is the extended length of moul ting of the choke tube finished in a normal round hole and lugs which provide both a firmer base for mounting the is not reworked in any way. The shaft is of high tensile whole engine but also wider spacing of the hold-down steel and fully hardened. Crankpin diameter is .203 in. bolts, making for more rigid mounting throughout. The and crank web diameter .780 in., cut away for counter­ generous bearing length carries the propeller disc well balance. Web thickness is a substantial | in. clear of the choke tube and the spraybar is also angled The cylinder, which is undoubtedly the “heart” of back (to the lefi) for better accessibility of the needle this motor, is of fully heat-treated high tensile steel. valve. The original form of propeller driver, which was Outer surface is perfectly cylindrical with the three in the form of a hollow cylinder enclosing the front of radial exhaust ports cut through the walls. Oval shaped the bearing, has been replaced with a conventional dural transfer passages—three in number—arc formed inside disc driver locating on a taper length of the crankshaft. the walls, extending upwards to overlap the tapered The crankcase unit appears to be unchanged. This is a exhaust ports. The bottom section of the cylinder walls gravity die-cast aluminium alloy unit yielding about are chamfered to a depth of some 3/16 in. which leave I/ 16 in. wall thickness in the crankcase itself and nearly virtually a minimum thickness to but against a ledge in | in. wall thickness over the bearing length. No webs the crankcase casting for gas sealing, and no gasket is arc incorporated, nor arc they necessary, since the used (nor would it be practical to use one in this instance). bearing length is well supported by the extended lugs The crankcase “ledge” has also been reduced to minimum and general form of the casting. The choke tube is a matching thickness so as to olTer no obstruction to free little unusual these days in being perfectly vertical— gas flow through the transfer passages. Λ considerable and also fairly far forward—the thick pillar extending amount of careful work is obviously done on each engine between the choke tube and the lower cylinder housing to arrive at the final porting, much of it tricky by nature accommodating one of the hold-down screws. The and virtually unthinkable on a mass production job. spraybar unit is of brass, also the needle thimble fitted Honing the cylinder, in particular, would appear to to the steel needle (and latter ground to a line taper). present a nasty problem — although with years of Friction locking is provided by splitting the thimble. experience on “ rcbore” service, no doubt this comes easy Summarising, a really high performance engine which to “Gig” Eiftlacnder! has been carefully developed and must now be approach­ The piston is conventional, with a conical top and ing ultimate performance for the layout. The P.A.W. press-fitted gudgeon pin assembled below the surface Special is also a well made engine, each one receiving a of the piston walls. Piston material is Meehanite. The considerable amount of individual attention. If it costs connecting rod is machined from solid dural with plain more than a normal “stock” engine, it is still remarkably bearings at each end and a lubrication hole in the big cheap at the price for the amount of skilled workmanship end bearing. The cylinder jacket is also dural, held down involved and represents excellent value for money. The by three screws, which appears a perfectly adequate excellent handling characteristics should make it well method of holding the cylinder in place. Since there is suited to contest work.

SPKCIFICATIOX Prop» i.lij<—R.P.M. FtUURU Displacement: 2.46 c.c. (.15 cu. in.) din. x pitch r.p.m . Bore: 595 in. 10.400 S tro k e..535 in. 9 x 6 Prog nvlon It) x 6 Prog nylon 8.600 Bi»re stroke ra io: I : 1.09 14.000 Wetghi: 5 ounces 8x41 rog nvlon II x 4 Top Mite 8,000 Max. power. .318 B.H.P. at 15,000 8.600 r.p.m. 10 x 6 Top Mite 10 x 3A fop Mile 10.000 Max. torque: 26 ounce-inches at 9.000 8,800 Power rating: 12» B.H IV per c.c. 9 x 7 Top Fliie 9 x 6 Top 1 hie 9.100 Power weight ratio: .0635 B.H.P. per 12.000 ounce 9 x 4 Top Mite 8 x 6 Top Plite 1 1.700 Malarial tpccification 8 x 4 Top Mite 14.300 Cylinder: fully heat treated high tensile 7 x 6 Top Mite 15.000 steel 9 \ 4 Trucut i 0.800 Piston: Meehanite 8 x 4 Trucut 14.500 Crankshaft: high tensile steel, fully 7 x 9 Trucut 1 1,100 hardened 6 x 9 Trucut 14.700 Connecting rod: Hiduminium 7 x 4 T rucut 16.800 Bearing».: Ransomc and Maries ball 9 x 6 1rucut 9.800 race (rear), Meehanite bush (front) 8 x 6 Trucut 11.200 Crankcase: light alloy gravity 9 x 7 K-K nvlon 8.8(H) diecasiing 9 x 6 k-K nvlon 9.000 Cvlindcr jacket: turned dural 9 x 4 k -k nvlon 1 2.400 Propeller driver: dural 8 x 6 k -k nvlon 12.000 Spravbjr: brass 8 x 4 k -k nvlon 14.400 Manufacturer*: Progress Aero Works. 7 x 6 k -k nvlon 14.000 Road, Macclesfield. Retail 7 x 4 K-K nylon 16,700 Price: £4 J8s. Od. 82 February, 1961

S in c e it w a s first introduced to A fromodeller Plans Service in January, I960. Ugo Rossi’s Devil has become an international favourite and it is only natural that we should bring the design up to date following the World Championship meeting. The design is altered in several respects. It uses the Jubilee model Super Tigre G.20, and a new pan, which are illustrated here. The pan is now locked from below in a more secure and vibration-free NEW(I960-6I) DEVIL Most successful F.A.I. specification by Ugo Rossi speed design in Europe. Champion of Ugo Rossi uses over his red tissue-covered model, it is four coats Italy, fastest of clear Polyester Varnish. His fuel at the I960 formula is 50 per cent. Nitromcthane, 10 or 15 per cent. World Champs. Nitro benzine, 15 or 20 per cent. Methyl Alcohol and 20 per cent. Castor. The prop, was a reworked Tornado system. The cowl is longer, its plan lorm is inset into the 6 x 8 — and since the Rossi Bros, offer their speed pans, circle, although the engine thrust line is still neutral and spinner and glowplugs for sale, this “all-commercial" most important, the control system is moved forward. design gives the speed novice a chance to ensure earl\ For those who have wondered what type of finish success.

FULL COPIES OF THIS l/4th SCALE REPRODUCTION ARE AVAILABLE AS PLAN CL 749 FROM AEROMOOEUER PLANS SERVICE PRICE 3s. 6d. PLUS 6d.'POSTAGE February, 1961 83 ® 0 Β Β Μ 2

H elicoptery .. • by F. G. Boreham

O ne o f th e n e w features incor­ helicopters and some small (Bensen) of a one-man lifter, to give good porated in Francis BorehanTs U.S.A. types, and it is certainly testing facilities, and at the same " WhirUtway" weightlifter model is simpler than cyclic feathering and time enable ballast weights to be the freewheel attachment, which servo (lap operation of the blades. used at the approximate C’.G. allows the rotor to disengage from Mr. Boreham intends to play about position thus enabling weight lifting the dural motor power boom. with radio control one of these days, capabilities to be determined. This When the engines slop, and power and the rotor tilt would be actuated is an essential step for the develop­ boom no longer drives the rotor via by a servo using a Micromax motor ment of a R C helicopter, however, the swinging wire links, the following of 60 : I reduction. a fuselage similar to a Sikorsky S.64 action takes place. Due to energy The present fuselage is purely a Skycranc could be used like Ken stored in the rotor, and the blades simple triangulated structure, with Norris’s excellent R C model as immediately (lapping up on their side track ground points on the lines shown in November issue. 45 deg. skew hinges, throwing olf pitch and attaining a good auto­ rotation setting, the rotor continues to spin. The swinging wire links, coming in contact with the now stationary mo'or boom, swivel clear and con­ tinue to keep in a raised position by centrifugal force as they arc pivoted freely. This is a simple action and works well. In this par icular model the power boom is mounted below the ro’or system in order to keep the C.Ci. in a low position and in con­ sequence the wire links are 7 ft. long. However, with a power boom mounted in the same plane as the rotor blades, a ratchet type or similar device to a free wheel airscrew would be required. Mr. Boreham has found less interference from the airscrews on the rotor blades, when the power boom is fitted beneath the rotor system. The auto-rotation qualities are much improved, as the blades no longer have to drive the power boom with attendant drag of engines and propellers so the “let down’ is better and excessive coning of the rotor blatles avoided. On this particular model only down or droop stops are lilted to the blades, which can (lap freely upward, but as mentioned before, the low drag and 45 deg. skew angle prevent excessive coning. In order to simplify control, a tilling hub is used and at present only in the fore and aft sense, and is set before flight. Zero or neutral setting for hovering, and vertical (light in calm air, while a forward lilt inclines the rotor disc for forward travel, and backward tilt for rearward travel. These settings arc quite small and the range is 7 degrees either side of neutral, the control pir locking the desired setting by means of the drilled plate. Rventually the rotor axle may be fitted with a gimbal to allow lateral movement a so, thus controlling the machine in a sideways direction. As a point of interest, the tilling hub control was successfully used in the C30 Autogyros and early February, 1961

AIRCRAFT DESCRIBED N u m b e r 107

Described & drawn by J. H. ROBINSON Gloster Tw o h k a u t ii-u i. low-wing floatplanes designed by On September 2nd Flying Officer D’Arcy Grieg made Η. P. Folland and II. F.. Preston were built by the two flights but could not locate the cause of the trouble, for the 1929 Schneider Trophy which persisted despite alterations to jets and intakes. Contest. Numbered N249 and N250, their superb After continuous, frantic work by ground crews over streamlining, minute frontal area, and exquisite outline three days and two nights Flight Lieutenant George well merited their unofficial title of "Golden Arrow” . Stain forth took up N250 on September 5th, but was still Cilostcrs maintained the biplane could be built as unable to keep the engine running at full throttle, so fast as the monoplane, and their first design studies of the Glosters were withdrawn from the race. a biplane development of the Gloster IV, known as the The day after the race, September 10th, Stainforth Gloster V, progressed as far as highly satisfactory wind made five runs over the three-kilometre course from tunnel models. But the new Napier Lion VIID engine Calshot Spit to Agwi Pier in N249, which by then was which was to power the Gloster machines was almost flying fairly well at full throttle on the level, although 3

WINGSPAN OVERALL LENGTH: LOADED WEIGHT:

ENGINE SUPERCHARGED !2 CYLINDER NAPIER LION m D OF L32o HP

35/ J MPH

COLOUR SCHEME (mo i m i WINGS AND HORIZONTAL TAIL OLD GOLD FUSELAGE. E)N. AND STRUTS BLUE ALL RADIATOR SURFACES. NATURAL BRASS FLOAT UPPER SURFACES- WHITE

GLOSTER 3ΖΓ N249 86 February, 1961

• Offers new scope for • the experimenter. • Here’s one viewpoint

by P. Gasson * Pee Wil

U n t il g u n e r ec en t ly it had to content themselves with models not been possible for English power of at least 24 in. span anti an engine enthusiasts to enjoy the use of a capacity of more than J c.c. Here is contest class miniature “ |A” motor. an account of the type of model The recent introduction of the Cox evolved to meet these requirements Pee yyee 0.3 c.c. glow motor which and to deal in particular with the is now in abundance in the mode! layout and type of const met ion which shops, has provided the long awaited is considered essential for a model of answer and is fast becoming a this si/c. favourite. lo achieve a rapid climb it is There is always a thrill to he had always necessary to keep a careful in contemplating the miniature and check on the weight. Particular there arc many modellers who have attention must always he paid to allowed then the model will no· be for years dreamed of an IK in. fast this requirement and the outside able tt) make full use of the high climbing power job and have had limit for a model of this type is power because of its wish to side 2i o/s. although by careful attention slip. to wood selection it is not difficult A tail area of not less than 30 per to keep this down to 11 o/s. With a cent, wing area is usually required, I oi. motor weight this allows only although a long moment arm docs ϊ-οζ. for the airframe. The fact that help to reduce this minimum, over 50 per cent, of the total weight providing inertia forces arc kept is concentrated in the motor unit small. imposes a considerable limitation In spite of its important function, upon the choice of layout. the tin often appears in a very The most obvious effect is to artistic, but often inefficient form. bring the v.g. well forward which Fin area is obviously of some means that the wings must he importance and proportions can be situated almost over the engine critical. I ms of a given area will R. Anncnberg solved this problem have different effects if their heights hv using swept forward wings, are greatly different. A tall tin has a thus bringing the wing centre of more pronounced effect than a pressure forward whilst keeping the short fin of similar area, but if root section behind the engine made too tail will be structurally (see /·>>. I) In smaller models weak or. alternatively, will be too such as described here, a swept heavy. The fin shown on the plan forward wing produces structural is a well tried shape and provides difficulties if' tip flutter during the a long fuselage sc aling and sufficient fast climb is to be avoided, for width to provide bracing for its this reason a straight leading edge high tip. is recommended and the c.g. problem The si/e of the propeller is of vita! solved by making the moment arm importance and experiments should longer than usual (about 4-5 mean always l>e made before one is chords), which also allows the satisfied that the best type is being pylon to be lower than that originally used. To this end it is convenient employed by Anncnberg (sec Ftt*. 2). to use a metal (duralumin) propeller. With this style of model it has Pitch can then be adjusted and the been standard practice to mount the diameter and blade area can be wing (but not the tail) outside the reduced if required. A duralumin slip-stream, by which means ii is propeller provides enough weight claimed that the layout is less critical to tail trimming adjustments (see /'iff. 3). Dihedral need not be excessive. 3 in. per foot of semi-span being sufficient for most layouts. If too much dihedral is employed then Dutch rolling will occur and conse­ quently the glide will not be good. If, on the other hand, too little is February, 1961 87

lo allow the engine to run smoothly A deep triangular fuselage section and in the event of a crash ilv* is undoubtedly the most suitable blades will bend without damage construction, which is considerably to the engine, lor it is a much easier simplified if the bottom spars are job to straighten a bent propeller made flat. Building can then be blade than to replace a broken commenced as follows: crankshaft. To guard against too ( oiiHtruHion frequent bending of the propeller Cut the plan form from soft blades a wire peg leg was provided 1/32 in. sheet and cement a 1/16 in. on the original model and saved the sq. longeron to each contour. Add propeller from all but a bad crash the 1,16 in. hard sheet formers to the The Cox Pee Wee motor requires front and back of the wing position a propeller of approximately 4 in. also the former at the tail end. diameter and 4 in. pitch. This is Fig. 5. Note “ Warren Girder" construction Build up top of wing mount and meant only as a guide as the pitch on fuselage, fin and tail. Also front and back sheeting of fuselage back bone using i in by 1/16 in. will be found to depend upon the (see Fig. 4). The Warren Girder overall weight of the model and will arrangement may then l>e inserted need to be considerably reduced if FULL SIZE COPIES OF THIS I 4th SCALE REPRODUCTION ARE AVAILABLE AS and finally the front side sheeting the weight exceeds the recommended PLAN PET779 FROM ALROMGDLLLtR Pi ANS and back bone 1/32 in. sheet webbing figure. SERVICE. PRICE 3 6 PLUS 6d. POSTAGE and dowels added (sec Fig. 5)

PI View, p t> < P Gov sort

THE AFROMOOELLER PLANS SERVICE

5'" \ " 7 ~ X \ / \ 1 Λ . — ------— '$ L —V Γι> 88 February, 1961

Build fin fiat on plan and cement to A normal type "pop down" tail back bone when thoroughly dry. D.T. is essential and ensure that the Finally, add bracing strips. fuse is arranged to lie on the longi­ Both the leading and trailing tudinal centre line of the fuselage. edges are of an "L" section. The leading edge is made from a piece of The Snul Oil 3/16 in. by I 16 in. laid Hat on the Before taking the finished model plan and a piece of 1/16 in. sq. along to the flying ground it is cemented on lop to the front edge. advisable to line the model up very The trailing edge is made in a carefully, checking squareness of similar way using l in by 1/32 in. tail thrust line of motor and difference (tapering at tip) on top of which a in incidence between wing and tail 1/16 in. sq. spar is cemented (see surfaces. No serious warps should Fig. 6). Although this method be present, a slight degree of wash­ produces a rather thick trailing Fig. 8. A shot of general interest. Note the out is usually helpful so that if rubber model type nose block with retaining dowel present, do not bother to remove it at this stage. (see Fig. 8). Slight downthrust Test glide into wind (initial test adjustments may then be made by flights should always be carried out sanding the balsa former on the on a calm day or evening). There fuselage, but flying field adjustments should be no tendency for the model are best made by placing washers to , it being preferable that the behind the mounting lugs of the glide be rather steep. Motor down- engine. thrust will then l>e governed by the Some people will find it an overall weight of the model and for advantage to fit a starter spring to a heavy model no downthrust will the engine and a suitable one is be required. illustrated in Fig. 9. Use a fine pitch propeller for initial flights, as this can be tuned to maximum revs, without giving Fig. 6. Shows a close-up oi the wing. Note the much torque and, at the same time, '*1” section leading and trailing edges and the thrust will not be large. Motor "W arrrcn girder" brae ng run should not be too short as it is almost impossible for any unlrimmcd edge, this does not seem to affect the model to recover from a near vertical performance adversely, whilst it altitude should the motor cut whilst undoubtedly makes a very strong still near the ground. For this reason warp resisting structure. it is recommended that a motor run Parallel ribsof l/32in. medium hard of 5 to 7 seconds should be employed. quarter grain balsa arc placed at II Measure fuel by eye dropper or con­ in. centres and a 1/16 in. sq. hard vert Pee-Wee to a "tube" tank. balsa spar placed on the top surface Do not be over anxious to achieve at maximum depth. Having built that vertical climb. The first few this structure it should be left pinned flights should be made using the down for a couple of days before fine pitch propeller which may be cutting the slots and adding the adjusted to give more thrust as the diagonal spars. Add dihedral keeper model is trimmed in a spiral climb. and root sheeting. If the model is particularly light The tail outline is built up from Care must be taken to wind the you may find that as the power is 1/32 in. medium sheet balsa and increased a loop results. This can geodetic capping strips 1/16 in. by spring as close as possible so that four or five turns of 18 S.W.G. wire best be corrected by a little down­ 1/32 in. and edge caps are then thrust. but if the amount required added. This produces a very re­ can be accommodated on the outside of the crankshaft bearing becomes excessive, add a piece of liable structure (see Fig. 7). 1/32 in. packing under the trailing The engine is bolted to a ply without the end of the spr'ng fouling the propeller. The spring is only edge of the tail plane. (Note: this block (shaped like the nose block of model has an undcrslung tail unit), a rubber model) to the back face of pulled forward to engage the propeller when actually in use. and move the c.g. forward to which a duralumin tube is fixed. balance out on the glide—this When the engine mount is plugged For those modellers wishing to latter adjustment is best achieved in a retaining pin is inserted through fit an 0.2 c.c. Dragon Fly diesel, a by placing a piece of packing behind the side of the fuselage into the tube suggested motor mount is illustrated the motor, thus moving it forward. in Fig. 10. To obtain correct circling, it some­ Coloured jap tissue is recom­ times helps if a trim tab is fitted to mended for the whole of the model. the wing or fin, otherwise the warp Two or three coats of 50 per cent, technique or a tilled tail is employed. dope-thinners being suitable for the Although it is not possible for fuselage and two coats of 30 per a model of this si/c to compete cent dope-thinners for the wings. against its big brother, it is capable Do not water shrink the tailplane and of giving a good account of itself use dope very sparingly—1 coat and will give many hours of enjoy­ 15 per cent, dopc-thinner. ment to anyone who builds it. February, 1961 89 a u s s a i s s )

I a t f s t p i . a s t i c kit to h e intro­ duced by Airfix Products I.Id. is of the fokker 1.21 Friendship, to their Trade standard I/72nd scale. It has 72 parts and sells for 7s. 6d., including two sheets containing 19 transfers for the LI-AKA Acr Lingus tleet Notes machine. Among the kit components are two pilots, a stewardess, transparent cockpit and cabin windows, radio aerials and antennae, passenger entry steps and stand. Star features include a fully retracting under­ to both raw fuel and exhaust sludge, we illustrated the amazing shapes of carriage, moveable rudder and the colours are dense, and the clear pre-cut blocks. Besides these, the ailerons, revolving propellers and shrinks well. kit contains shaped wing ribs, fuse­ we should also mention that unlike lx* Page's “ Dot" Ink Marker, lage sides, wing root lillets, centre another kit for the same type, the which sells at 3s. lid. will be of section ply covering, ply formers, wing is the right way up! special use to combat fans and d u r a ! I ! ( ' a n d w h e e ls . Our example is to he subjected to builders of other expendable type The kit is obviously designed for a very special colour scheme. More models for embellishing these with simple and quick construction. The details when it's finished! S.M.A.Fi. membership numbers. extensive use of block (all pre­ I lumber Oil Company Ltd. have Colours available are Black. Red. shaped) speeds construction im­ announced their range of Butyrate Yellow, Violet, Green, Brown and mensely. It should be remembered hot fuel proof dopes available in 7 Orange. that when building the wing, the colours at 2s. 3d. each and Is. 9d. Yet another Mercury Accessory A m. wash-out at each tip is essential. clear in 2 oz. tins. Points one should is a neat little free-flight tank We built a jig to set this wash-out note about Butyrates are that the moulded in polythene. This could, and the extra effort certainly was same type of clear dope must be in certain cases be used for control worth while. There is ample room to applied to a surface before Butyrate line. Price is not yet announced, accommodate radio equipment, and colour. It is fatal to use ordinary but the unit will be available in the the importers recommend any num­ cellulose. Where masking with near future. ber of channels up to four. Sellotapc, care must be taken when To the casual observer, the The only point we would criticise removing the mask, or Baking of the Swedish Model Plug Industries' Vik­ is that at the extreme rear of the dope may result. We find llumbrol ing. imported by Kipniax might fuselage is a large block. The de­ Butyrate to be completely resistant seem an expensive kit at £6 12s. 6d. signer used a proportional servo, A peep inside the box dispels any with push-pull action lor the rudder, such notions however, for it must but no provision is given in the kit rate as one of the most extensively for a hole through this stern block pre-fabricated kits available today. for the universal actuator coupling. In December, I960, Trade Notes. Bare uncovered weight is 26/ o/s.

Heading shows the Le P a c e ’s Dot Ink Marker in action, very handy for quick decoration. Left: The Mercury multi­ purpose Polythene tank for small models shown actual site, is Rood for free flight as well as control-line. B elo w le ft are the new B u tyra te, fuel- proof dopes by Hum her Oil

A t n g h t : Two views of our test VikinR from the R.M.A. dis­ tributed k it. This is destined for single channel rudder en­ gine operation and a thro ttled 3.5 c.c. engine. Structure is simple yet very tough and prefabrication makes assembly easy jo a tm a a 88 February, 1961

Build tin tlat on plan and cement to A normal type "pop down” tail back bone when thoroughly dry. D.T. is essential anil ensure that the Finally, add bracing strips. fuse is arranged to lie on the longi­ Both the leading and trailing tudinal centre line of the fuselage. edges are of an “ L” section. The leading edge is made from a piece of T h e Oft 3/16 in. by 1/16 in. laid flat on the Before taking the finished model plan and a piece of 1/16 in. sq. along to the flying ground it is cemented on top to the front edge. advisable to line the model up very The trailing edge is made in a carefully, checking squareness of similar way using 3 in by 1/32 in. tail thrust line of motor and difference (tapering at tip) on top of which a in incidence between wing and tail I 16 in. sq. spar is cemented (see surfaces. No serious warps should Fig. 6). Although this method be present, a slight degree of wash­ produces a rather thick trailing F ig. 8. A shot of general interest. Note the out is usually helpful so that if rubber model type nose block with retaining dowel present, do not bother to remove it at this stage. (sec Fig. 8). Slight down thrust Test glide into wind (initial test adjustments may then be made by flights should always be carried out sanding the balsa former on the on a calm day or evening). There fuselage, but Hying field adjustments should be no tendency for the model are best made by placing washers to stall, it being preferable that the behind the mounting lugs of the glide be rather sleep. Motor down- engine. thrust will then be governed by the Some people will find it an overall weight of the model and for advantage to lit a starter spring to a heavy model no down thrust will the engine and a suitable one is be required. illustrated in Fig. 9. Use a fine pitch propeller for initial flights, as this can be timed to maximum revs, without giving F ig. 6. Shows a close-up of the wing. Note the much torque and, at the same lime, ••L” section leading and trailing edges and the thrust will not be large. Motor ••Warrren girder" bracing run should not be loo short as it is almost impossible for any untrimmed edge, this does not seem to alfect the model to recover from a near vertical performance adversely, whilst it attitude should the motor cut whilst undoubtedly makes a very strong still near the ground. For this reason warp resisting structure. it is recommended that a motor run Parallel ribs of 1/3 2in. medium hard of 5 to 7 seconds should lx* employed. quarter grain balsa are placed at Ij. Measure fuel by eye dropper or con­ in. centres and a 1 16 in. sq. hard vert Pec-Wee to a "tube” tank. balsa spar placed on the top surface Do not be over anxious to achieve at maximum depth. Having built that vertical climb. The first few this structure it should be left pinned flights should be made using the down for a couple of days before fine pitch propeller which may be cutting the slots and adding the adjusted to give more thrust as the diagonal spars. Add dihedral keeper model is trimmed in a spiral climb. and root sheeting. If the model is particularly light The tail outline is built up from you may find that as the power is 1/32 in. medium sheet balsa and Care must be taken to wind the spring as close as possible so that increased a loop results. This can geodetic capping strips I 16 in. by best be corrected by a little down- 1/32 in. and edge caps are then four or live turns of 18 S.W.G. wire thrust, but if the amount required added. This produces a very re­ can be accommodated on the outside of the crankshaft bearing becomes excessive, add a piece of liable structure (see Fig. 7). 1/32 in. packing under the trailing The engine is bolted to a ply without the end of the spring fouling the propeller. The spring is only edge of the tail plane. (Note: this block (shaped like the nose block of model has an undersiung tail unit), a rubber model) to the back face of pulled forward to engage the propeller when actually in use. and move the c.g. forward to which a duralumin tube is fixed. balance out on the glide -this When I he engine mount is plugged For those modellers wishing to latter adjustment is best achieved in a retaining pin is inserted through fit an 0.2 c.c. Dragon Fly diesel, a by placing a piece of packing behind the side of the fuselage into the tube suggested motor mount is illustrated the motor, thus moving it forward. in Fig. 10. To obtain correct circling, it some­ Coloured jap tissue is recom­ times helps if a trim tab is fitted to mended for the whole of the model. the wing or fin. otherwise the warp Two or three coats of 50 per cent, technique or a tilted tail is employed. dopc-thinncrs being suitable for the Although it is not possible for fuselage and two coats of 30 per a model of this si?c to compete cent dope-thinners for the wings. against its big brother, it is capable Do not water shrink the tailplane and of giving a good account of itself use dope very sparingly—1 coat and will give many hours of enjoy­ 15 per cent, dope-thinner. ment to anyone who builds it. February, 1961 89

L atest pi.a s iic kit to he intro­ duced by Airfix Products I.td. is of the fokker 1.27 f riendship, to their Trade standard I/72nd scale, it has 72 parts and sells for 7s. 6d., including two sheets containing 19 transfers for the LI-AKA Act Lingus fleet Notes machine. Among the kit components are two pilots, a stewardess, transparent cockpit and cabin windows, radio aerials and antennae, passenger entry steps and stand. Star features include a fully retracting under­ to both raw fuel and exhaust sludge, we illustrated the amazing shapes of carriage, moveable rudder and the colours are dense, and the clear pre-cut blocks. Besides these, the ailerons, revolving propellers and shrinks well. kit contains shaped wing ribs, fuse­ we should also mention that unlike 1λ* Page's “Dot” Ink Marker, lage sides, wing root fillets, centre another kit for the same type, the which sells at 3s. lid. will be of section ply covering, ply formers, wing is the right way up! special use to combat fans and dural U C and wheels. Our example is to he subjected to builders of other expendable type The kit is obviously designed for a very special colour scheme. More models for embellishing these with simple and quick construction. The details when it's finished! S.M.A.L. membership numbers. extensive use of block (all pre­ Humber Oil C ompany Ltd. have Colours available are Black, Red, shaped) speeds construction im­ announced their range of Butyrate Yellow, Violet, Green. Brown and mensely. It should be remembered hoi fuel proof dopes available in 7 Orange. that when building the wing, the colours at 2s. 3d. each and Is. 9d. Yet another Mercury Accessory A m. wash-out at each up is essential. clear in 2 oz. tins. Points one should is a neat little free-flight tank We built a jig to set this wash-out note about Butyrates are that the moulded in polythene. This could, and the extra effort certainly was same type of clear dope must be in certain cases be used for control worth while. There is ample room to applied to a surface before Butyrate line. Price is not yet announced, accommodate radio equipment, and colour. It is fatal to use ordinary but the unit will be available in the the importers recommend any num­ cellulose. Where masking with near future. ber of channels up to four. Sellotapc, care must be taken when To the casual observer, the The only point we would criticise removing the mask, or flaking of the Swedish Model Plug Industries’ Vik­ is that at the extreme rear of the dope may result. We find Humbrol ing, imported by Ripmax might fuselage is a large block. The de­ Butyrate to be completely resistant seem an expensive kit at £6 12s. 6d. signer used a proportional servo, A peep inside the box dispels any with push-pull action for the rudder, such notions however, for it must but no provision is given in the kit rate as one of the most extensively for a hole through this stern block pre-fabricatcd kits available today. for the universal actuator coupling. In December, I960, Trade Notes. Bare uncovered weight is 26] o/s.

Heading shows the Le Page’s Dot Ink Marker in action, very handy for quick decoration. L e ft : The Mercury multi­ purpose Polythene tank for small models shown actual size, is good for free flight as well as control-line. B elo w le ft are the new B u tyra te, fuel- proof dopes by Hum hcr Oil

At right: Two views of our tost Viking from the R.M.A. dis­ tributed kit. This is destined for single channel rudder / en­ gine operation and a thro ttled 3.5 c.c. engine. Structure is simple yet very tough and prefabrication makes assembly easy mm 90 February, 1961

Top left: This Graham e-W hite Type XV is an exam ple of the basic configuration of the design: equal-spin wings, forward elevator, exposed crew. The Type XV was used, in several forms, bt the R.N.A.S. for training purposes. Above: The first of 2S0 F.E.2 b*s built by Ransomes, Sims and Jefferies. B40I was used at Orfordness to test balloon fenders. These consisted simply of cables running from the forward end of the "bow sprit" to the apices of the horizontal vee struts attached to the front outer intcrplane struts. A second F.E. had a slightly different cable layout. One of these aircraft was deliberately flown inta a balloon cable by Captain Roderic Mill. The device was heavy, clumsy and only partially successful, and it was not developed. PHOTO ALBUM More W W I types of unusual interest

Right: Another view of the captured Albatros Dll i lustrated in the November, I960 issue of AEROMODELLER. A British airspeed-indicator pressure head has been mounted on the starboard upper wing.

Above heading: This captured Halbcr- stadt Dill has also acquired a British pressure head. Its British markings have been applied with gnat care and in accordance with prevailing British prac­ tice. The small lettering at the top of the white stripe on the rudder reads:— A.R.S.F. 4541 19 6 17

The number 234 almost certainly indi­ cates that this Halberstadt Dill originally had the German Bestcllnummer D 234/16, which has been reported as that of a Halberstadt D V shot down 15th February, 1917. Left: A fine study of a Sopw ith F.l Camel powered by the 100-h.p. Gnome Monosoupapc engine. Camels fitted with this engine w ere used by training units.

Right: The Bristol Scout was the first British aircraft to go to France fitted with a machine-gun interrupter gear; only a few machines were equipped in this way, and photographs of them are rare. This Scout D’s Vickers gun was synchronised by the Vickr rs-Challenger interrupter gear, the link rod of which can be clearly seen. The fact that the gun had a chute for empty cases, indicates that a disintc- grating-link tyae of ammunition belt was in use when this photograph was taken. February, 1961 91 T DC

Rossi’s new record jet model at left and mass production Russian M.O. 2.5 with timing diagram at right. This engine closely follows Czechoslovakian design features. 10,000 are to be produced over a five year plan

T he je t m o d e l above is what it takes to make a new record flight of 186.] miles per hour! Note how the “fuselage” is no more than a Rossi Vulcan Jet, to which the wings, tail and tank are appendages. Rossi is seen with another of his Vulcan power units in the photo­ graph, below, right, and the valve gear is revealed at bottom. Similar in most respects to the long established principles of the Dynujet this product from Italy differs in that it is larger than the American equivalent, a subject which must be a source of annoyance to Λ.Μ.Λ. members because in the States, tailpipe diameter is limited to a cross-section of 1.25 square inches, whereas the only European restriction is that of weight, whereby th: F.A.I. rule of 500 grammes maximum (l.l lb.) is applied. As a matter of fact, the U.S.A. raised this matter at the recent E.A.I. meeting, but the existing weight rule wa> deemed satisfactory as it also allows for turbo- reactors as well as pulse units. Weight of the Vulcan is 430 grammes (15} ounces), its overall length is 26jJ inches and maximum diameter 2* inches. Price in Sterling is £12 from the works. The Russian racing engine which is in mass production as the Moscow M.O. 2.5 bears considerable family resemblance to the Czech MV VS engines which the Russians have been using for some time. Although externally appealing, it falls short on performance, largely due in the case of our example, to a poor piston tit. However,— it’s a unit that begs for reworking and wc sent tire to predict that with so many about to enter circulation, a fair proportion will get into enthusiastic hands and make their mark in the speed circuits. We have taken the timing diagram from the instruction booklet which accompanies the Moscow. Same book gives the bore as 15 m.m., stroke 13 m.m. and claims peak power of 0.3 B M P. at I8.(XM) r.p.m. Each engine is certified as tested with a signed declaration in the

Top right. most bent diesel wc have ever seen. An ETA 150 after collision with Kenley tarmac in J. Lambert’s racer at well over 100 m.p.h. Not a part was salvageable! Below it is Ugo Rossi with his Vulcan jet demonstrating the size of the unit, and immediately below him is the nose detail of the jet showing valve gear. Immed­ iately righ t, is the Gorski Sakol 4.5 c.c. diesel used in Polish models at the World Championships showing a rem arkable smoothness and good power. Same type also powers the scale Britannia in last month's issue Ώ 3 3 Μ 0 92 February, 1961

MOTOR MART (continued) handbook, quoting date of manufacture and serial number. We arc indebted to the Wind So'A\ official bulletin of the Sputterllys MAC for some re-work hints on the O.S. Max 15. Some time ago we commented on the claim for I7,(XX> r.p.m. with a slock Tornado 6 \ 9 in. prop, made by this club, with the suggestion that it might be a little on the high side. Now we are assured that the figures arc obtained by an accurate electronic tachometer and to bear out the claim, they have a second engine which was similarly modified and turned 17,600 r.p.m. with promise of more to come when run-in. Mods include flaring the shaft opening into the crankcase, Above, comparative views opening the shaft bore by 1 16 in., opening the rotary of old and new P .A .W . 2.5 valve by an extra 1,32 in. each end, and for pressurising diesels shows how the if wanted, a head bolt is drilled between 1/64 in. and front end has been changed completely. New model at 1/32 in. and locked with nuts as a backplatc bolt in the left showing its tapered upper left position when viewed from the rear. These exhaust ports. Right, the were extra mods, over and above the usual “treatment” Sugden Special glow plug 2.5 has an inclined plug of replacing gaskets, de burring and polishing the mounting and voluminous transfer, bevelling venturi to 45 degrees and opening to 7,16th diameter intake. | in. internal bore, polishing the backplatc, squaring Will turn a 7 x 4 Kaysun out the piston transfer ports, bevelling lower edge of nylon prop, a t 16 2C0 cylinder transfer port, polishing most other parts and r.p .m . hand lapping piston and shaft fits with rouge. I nough? Same bulletin quotes Jaures Garofali's advice to Super Tigrc C.20 owners on running-in procedure. Run at I6,IXX) r.p.m. on a 55 per cent. Nitro, 20 per cent. ( astor, 10 percent. Methanol, 15 percent. Nioobenzine formula for a half-hour after 4 to 6 hours of general At left, the Sugden Special diesel as used by Ken running. In-flight running is recommended becau.se Groves in the World fairings (wc presume this means speed cowls) cause Championships has double overheating, and though first flights may show low ball race supported crank­ shaft and said to be as fast speed, this improves with each succeeding flight, as as any other diesel. No many have seen when the Super Tigrc l.quipe performs special features just good at a contest. fits and excellent workman­ Other news from concerns Dave Sugden ship give it performance (well on the way to becoming a dentist, having forsaken the aircraft industry!) whose specials are always of interest Ken Groves used the diesel illustrated here, at C ran held but unfortunately suffered D/T timer troubles. 2*5 cc Fuel consumption tests D ai a for i hi: three accompany­ possible, or necessary. Maintenance the case of “A” (reading on the left ing fuel consumption tests on 2.5 c.c. of a “minimum lean” setting in hand vertical side of the graph) engines were obtained with “straight” flight, too. depends to some consider­ and c.c. per sec. per B.H.R. in the diesel fuel and were made under able extent on the location and case of “ B”. Needless to say, these identical conditions. Fuel consump­ design of the fuel tank. curves are symmetrically opposite, tion was measured at a range of The “ A" and “ B” curves should but do enable an immediate apprecia­ load speeds between 10,(XX) and be related to the tabular figures, tion to be made when comparing J6,(XX) r.p.m., using different sizes when it will be seen that they with previous tests which have been of propellers. Needle valve setting represent B I I P. x Seconds per c.c. in conducted in either way. corresponded to the leanest mixture to give consistent running through­ ENYA out the lest and mean consumption A H of at least three readings averaged 15D-11 for each load-speed. Measured and Seconds ti.tr .r . x c.c. 'Second} R.P.M. R.H.P. per Seconds c.c. Second i i .h .p . derived data are summarised in the c.c. c.c. tables and graphs. It muM K' pointed out that these I0.(HX) .266 7.6 2 02 .132 .496 11 ,OIX> .2X4 7.1 2.02 .141 .496 data rep esent static test conditions 12 (XX) . 299 6.8 2.03 .147 .49 and do not necessarily apply to W 1 I.IKX) ..111 6.3 1 97 .159 .51 consump ion figures achievable in y I4.IXX) .321 5.9 1,9| .170 .53 1 S.(XX) .330 5.5 1 XI .182 .55 flight where a considerable modifica­ 16,000 .332 5.0 1.66 .200 .60 tion of n edle valve setting may be February, 1961 93 Ή 3Β 30Δ Β £)

Being a loop-scavcngcd engine, somewhat different consumption/ ENYA 15D-11 (continued) speed characteristics might be antici­ pated. However, the duration per c.c. shows to be linear in character­ 8 istic with an increase in fuel consump­ tion of the order of .009 c.c. per second per I .(XX) revs. The product of brake horse power developed Λ against fuel consumption is sub­ stantially constant over a wide range of speed. Specific consumption (B) increases more rapidly at the upper end of the speed range. Restarting characteristics of this motor, when hot, were excellent and could be accomplished without choking or priming.

A U ETA 15 D Seconds n u p . x c.c Second} R.P.M. n .n . p. per Seconds c.c.'Second U.H.P. c.c. c.c. Presenting a different curve graduation for the power consump­ 10.000 .272 7.6 2 07 .132 .485 tion ratio figures, the ETA I5D has 1 1,0lX) .285 6.5 1.86 .154 .54 12.000 .300 5.8 1.74 .172 .57 a comparatively low rate of increased 13.000 .313 5.3 1.66 .189 .60 consumption as speed rises. It is 14.000 .326 4.95 1.62 .202 .62 15.000 .336 4.7 1.56 .21.3 .635 usually operated between 13,(XX) and 16,000 .344 4.5 1.55 .222 .645 15,(XX> r.p.m. for team racing, (air figures). The extremely nice needle valve control, and possibly the twin ball races, makes it easy to establish optimum settings with this engine. Fuel consumption showed a tendency to decrease slightly from a true linear relationship with increas­ ing speed, probably due to the line degree of mixture control provided by the needle. Re-starting characteristics were found to be excellent, with or without choking. ft PM - T HOUSJ MCS ft PM THOUSANOS P.A.W. 2-49 Mk. Ill A D Seconds n .H .r . x c.c. Second/ R.P.M. 13. HP. Fuel consumption proved to be per Seconds c.c. (Second D.H.P. substantially linear on static test c.c. c.c. 10.000 .256 with an increase in consumption of 7.8 .128 11.000 .275 2.0 .50 6.9 1.9 .145 .53 the order of .020 c.c. per second per 12.000 .290 6.3 1.83 .159 .55 1,000 revs, which is a little on the 13.000 ..104 5.6 .179 14.000 .314 1.7 .59 high side. However, a slightly 5.0 1.57 .200 .64 I <.000 .318 4 3 leaner mixture setting could un­ 16.000 .313 1.37 .733 .73 doubtedly be held for high speed 4.0 1.25 .250 .80 running using a nitrated fuel. Specific consumption (B) showed a marked increase at high speeds. An exact setting was difficult to establish for “minimum lean'* mixture to give a consistent run throughout the test runs and measured data probably correspond to a somewhat richer mixture can need be used in flight conditions. Restarting characteristics were ve| 7 good when hot, but choking or priming was virtually essential to ensure a first-flick start. i a a a u M O S I M S 94 February. 1961

Joyce Pringlf. is shi n in our heading photograph this month. No! many people outside of her locality know that she is Secretary for the North I.astern area of the S.M.A.E. and a very keen member of the Novo- castria Club, being specially interested in gliders. The Open Rubber job she is holding belongs to fiance Ron Pollard of Tynemouth M.A.C. and is his successful design which was in the fly-off at the Nationals last year. Ron built two similar models and named them after famous trumpet players, Buck Clay fan (as seen in the picture) and Roy tJdru/gc. “ Roy” was used at the Nats, and “ Buck" at the Northern Gala. In all. the pair have completed 23 contest flights including nine four-minute max.'s. twelve three-minute max.'s and several placings, including that at the Novocaslrian Gala, where this photograph was taken and where Ron Pollard's model was beaten into second place by John O’Donnell's win by a mere three seconds. CoiilroM ine am i to<*alo Something different is seen in photograph A . At least the U.S. might be worried as it carries both Navy and Air force markings, but then it is only a model! Powered by an A.M. 10 it has coupled flaps and elevators, weighs 14 ozs. and flies at about 50 m.p.h. despite heavy wing loading. D. Rolfe of was responsible for this futuristic semi-jet. Next in II a most attractive £th scale model of the Sopwith Baby on floats from P. M. Cullingford of . Powered by an E.D. 2.46 racer diesel, it is usually flown at Yeadon, has a lovely slow take-off from water lasting for over 50 yards before it unsticks. The control surfaces are hinged for pendulums but these were not needed. S p o r t Our feature last September on the Argosy freighter, resulted in L. S. Boast of Chertsey, sending in picture C‘ showing his Silver Queen Mark II, a six-year-old veteran, usually to be seen over Chobham Common. Spanning 91 ins., weighing IU lbs. and powered by two E.D. 3.46 Hunter diesels at the nose and rear end of the centre fuselage, it is also unique in having a four-wheel undercarriage. Unfortunately it is a three man job in starting and launching, so flights are not made as often as the owner would like, tiiliilcr Interest in slope soaring increases annually and this is largely due to encouragement from clubs such as those at Chester and Cambridge. Clive King of Cambridge sent us the two photographs I) and The former is a standard A eromoof.i i fr Plans Service Hover king, except that the fuselage is made with 1 m.m. ply covering. The all-up weight is 3$ lbs. The second photograph reveals an experiment which has been going on in Cambridge for some time, namely that of a \ B p February, 1961 95 ciasjiuiai)

design. I he mam point in favour is penetration ot the model which only weighs 30 o/s. all up and yet can penetrate in the same conditions as well as a model weighing 5 lbs. Swept wing stability has a lot in Us favour for slope soaring, hut unfortunately demands special designs or complete conversions. It simply is not possible to interchange straight and swept wings on the field. S o li d * Refreshing views are seen in !«' and In of solid scale models (yes, the type you carve yourself from wood NOT plastic!). These were made by If C. Campbell of Rcigale, the upper one being a Short 225 and the other a DU. 9a. Ribs arc represented by twine glued with seeeotinc over the spruce carved wings which are then covered with tissue, offering a realistic effect, especially if slight wrinkles appear in the tissue. Wheels for the Π.II.9 are none other than shirt buttons with plastic wood fairings and the pilot and observer were also carved from plastic wood. Rigging is with 5 amp. fuse wire. The fineness of the control wires was a slight problem and on the D.H.9. Mr. Campbell used grey human hairs, much to his regret, as they are susccptable to atmospheric changes although they serve as a useful barometer. Both models are to I/72nd scale and Mr. Campbell finds that the most fascinating component to make is the airscrew, which he leaves in natural wood finish after carving and then varnishes for final effect. N p e e il Photograph II comes from the South London Club, which is doing so much to encourage speed flying and shows R. Bricknelfs Monoline speed model from Brixton. Powered by a Super Tigrc Ci.20V, it is of metal and glass fibre construction and great hopes are held for its speed. Obviously Mr. Brickncll is being cautious in maintaining line tension with a fin of that size. Inortlioflov Lastly in photograph .1 is one of the more fascinating experimental designs from A.P.S., the Ace of Diamonds. This one was made by I). S. Pepper of Gosport and is powered by a Cox Pee Wee and although it weighs 16 o/s. the angle of climb is 30 degrees or more. Take offs from the runway at Lee-on-So.ent are said to be a joy to watch, with no deviation and air stability is every bit as good as claimed by the designer. I he full thory of the Ace o f Diamonds configuration was detailed in A iro- modm.lfk for August, 1958, and was the brainchild of Mr. Norman Hall-Warren, who first created such a wing design in 1926. In 19.37 a patent was granted, and continual rising costs of pro:otype manufacture have been the sole reason why a full si/c prototype has not been produced. Modellers have found that the Ace of Diamonds is virtually stall free and steep angles held with safety one wonders why no large manufacturer has interested himself in the type. m m c f e m a a 96 February, 1961

With the development of miniature transistorised receivers, it has become possible to accommodate radio m the smallest of models, and because of the reduction m model si/e, escapements can no longer be lined in the back of the fuselage, but must instead be mounted at the p o i n t of maximum cross section. Stock British e s c a p e ­ ments (excluding the fclmic Conquest) cannot be used at this desirable position, and therefore we must devise a 'Yoke” to reverse the actuating action, so that rubber drive and torque rod both travel to the rear of the fuselage. Λ study of our conversion carried out on a Rj.sini> Compound w ill show what is wanted, and a short description of construction will help. Drill a hole in the Paxolin base using the dimensions Itiviii” Compound ronx oi'sion on the photograph to position this hole, and mount an IN s.w.g. propeller bush using a 4 Β.Λ. nut each side of F or many yfars it was the practice in radio models to mount the escapement at the rear o f the fuselage. the base as a retainer. Bend the I “-shaped crank Tins is a time-tested system and works well, hut the from 18 s.w.g. wire, not forgetting the "kink” in the model must he large to accommodate the escapement centre and that crank ilirow is i inch. Next shape the in that position. torque shaft, when the actuator is at the neutral stop, from 18 s.w.g. wire, by bending to "I “-shape and reversing one arm back on itself to form a narrow loop I J inches long. Slide the other arm through the bush with a cup washer loosely fitted for soldering later (see picture). Position the crank oil the shaft and also in the loop. Retain the torque shaft with the cup washer soldered to form a distance stop. Another cup washer the other side of the hush completes this operation. Now to solder the crank in place on the shaft hold crank to shaft by the "kink” and with the actuator pawl firm at the neutral .stop, and the crank and loop follower superimposed and in-line, solder crank to shaft. If this is not completed with care, ludder movement will not be symmetrical about the centre (neutral position). 1 nsure that everything works freely, by bench testing, and if functioning properl) the escapement can be bolted to a bulkhead, the best position we find being just behind the wing. Use .V16 inch dowel or 3/16 square balsa for the torque rod. binding 18 s.w.g. wire to each end to engage the rudder and escapement A standard screw- locked coupling can be used to join up with the escape­ ment and still permit removability for inspection and maintenance. U.S. Il l· \ctvx First item of news this month is that the new Kcktronics Co. of Santa Ana, California, is manufactur­ ing a version of the Kraft Single Channel l x and Rx, by arrangement with the designer, Phil Kraft. I he l x costs S34.95 and is temperature compensated to work at up to 140 degrees F. Receiver has three transistor amplification stages following the valve detector, ending in a Deans sub-miniature relay, again temperature compensated and tested from 0 degrees to 140 degrees I .. si/c is 2* in. x Ijj in. by I in. and price S29.95. Citizen-Ship Radio Corp. have announced an 8-Channel superhet receiver of very compact size 2 in. x 2) in. x 2i in. weighing 8 ozs. T his is as small as many super-regenerative outfits, but gives the super- selectivity afforded by this type of receiver. Unit is all transistorised, using a miniature 15-volt battery for power. This is the K.V.-8 model and costs 5129.95. Another interesting piece of equipment from the U.S.A. is the l o l p i pneumatic control system consisting of air reservoir and selector, and pneumatic servos. Cost in U.S.A. is 537.85. Judging from the U.S.A. Nats, where three of the top four multi R C winners had tricycle landing gears, this type may set a pattern for the future. Again the Americans have produced that litfe extra something. The (λ & B. Manufacturing Co. of Dallas, Texas, arc producing a steerable nose wheel unit. The wheel is 2$ ins. diameter. Miaym February, 1961 97 l a a m a a

and the U/C leg is 5] ins. from pivot plate (which bolts Fir*t lilt from Amhroiil to the firewall), to the axle. Weight is 4$ ozs. Cost in If there is one name which automatically signifies the U.S.A. is SI5. Perfection Model Co. of Santa Monica, highest standard in kit "engineering”, it is that of W. A. California, also market a steerable landing gear having “ Bill” Dean. stainless steel construction, is chrome-plated and has Ambroid have now- produced their first model kit. torsion bar and coil spring suspension. Wc note that Hitherto they have been renowned for their cellulose this unit equipped first and fourth place winners at the products, especially Ambroid Cement, which is a I960 U.S. Nationals winch speaks for itself. Cost is particular favourite with a great majority of modellers. $7.95. Bill Dean has prepared the Charger for them and we A third type of steerable nose wheel is manufactured have been fortunate in obtaining an early sample of this by Don Steeb Inc., Rochester, New —makers of kit for Mill Boone’s 1959 National·, winner in single- the Steeb “Atlas’* servos. Made from 24 SI aluminium channel. Actually it did more than that, it swept first, and chrome vanadium steel wire, unit comes complete second and third places and probably inspired more except for wheel, and wire struts arc long enough to copy models than any other type in its class has c\cr accommodate any si/e wheel, weight without wheel is done in previous years. I] o/s. Swivel bearing and steering mechanism is designed The Ambroid kit includes a three-sheet plan with for installation inside the fuselage. Price is $7.95. magnificently illustrated stage by stage building details, f rom Kansas City Radio Control Club news sheet. leaving absolutely nothing to chance. We have no Contacts, we learn that two enterprising fellows, Ward hesitation in saying that the standard of instructions and Hunter and C harley Reed have flown a system which illustrations arc un-surpassed. The construction sequence they call “dual prop” which means that their two rudder- employs a iiggmg system for the wing and a rapid only proportional models are flown simultaneously olT assembly of die-cut components for the fuselage. Pre­ one T\. They plug in two separate control box pulscrs, sumably it is in the interests of economy that some of and use separate tone channels, one lone for each set the areas normally filled with block are now made up of control signals. of a mass of die-cut pieces of j in. sheet (uses more Other members of this active club are using smoke Ambroid glue too!), but this is really no problem and streamers during aerobatics. probably adds strength. First sight of the actual size plans immediately intro­ Apparently the smoke trails show up well on film, duces the Charger as quite a new type of approach to which is good evidence of their success. Many people single-channel for British eyes. Considering that it is have tried smoke “bombs” and have given up because a 2.5 c.c. model, its 48 in. span (8| in. chord) is relatively it was found difficult to lay a sulfieiently dense trail at small and with hefty leading and trailing edge plus full speed for it to hold “shape”. These Kansas City “bombs” span double “ I” spars and a very tough tailplune, it is have been developed by Oliver , they last for obviouslv created to meet the type of accident expected six to eight minutes and can be in white or colour. from a fast flying single-channel model. Yet the all up At the time the most vexed question being felt through­ weight of 39 ozs. is comparatively modest. This is a out the States, is the future of present classes of radio reflection on the sensible distribution of small cross control. Opinion of the majority seems to be that section components in properly engineered design for restriction of application of radio equipment in single stress. Full details are given for the rudder and engine channel is killing interest in this class. Many feel that control systems used on the prototypes also original greater licence in applying control is required so that colour scheme for those who lack initiative and a fine ground handling and most polished performance can set of decorative transfers complete a kit which is soon be achieved. to be occupying space on our building board.

Photos on opposite page: U pper shows dimension* and configuration of the ••yoke” for Rising Compound Conver­ sion. Comparison of size with hand shows compact layout. Lower view gives an indica­ tion of what the escapement would look like if mounted horizontally. Neat soldering enhances appearance. NOTE ! ! Be sure to get crank and follower superimposed when compound is at neutral stop befo re soldering

Right: Extracted from the Charger kit by Ambroid arc these views which give some idea of the wealth of detail. Span is 48 in. Area 390 sq. in. Sprung nosewheel and engine control arc great aids for contest success. Price is $14.95. "U r· - .. ^ B m y & a a 98 February, 1961

WORLD NEWS

This S.P.A.D.in American Ex­ peditionary Force markings by Rolf Norstog of Norman, Oklahoma, U.S.A., took several years to build, has an Atwood 60 Ignition engine, was 4th at '59 Nats., First in I960 C L Scale.

Although the father and son team of Roger and was 5 : 56. In Stunt, local man Bartoli (whose models Claude Auberiin created a record time for F.A.I. team have been seen before in these columns) made a 2,008 racing in the Principality of Monaco, when they com­ total with a Micron 10 c.c. job to edge out Lauron from pleted the 10 Kilometre course in 4 : 48 with their M A Lyon. There were 15 entries in Stunt. 15 model, they did not survive the 17 team International Down under in , everyone is preparing last October. Competitors came from Italy, Marseille for the Nats, as we write and a few items from the entry and I .yon to join the Monagasqucs in a T/R and Stunt form might be of interest. First is a “Cover Charge" of contest, in fact the Frenchmen collected first four places £1 17s. 6d. for contestants, or 14s. 6d. for non-contestants. in team racing. Apparently the Aubertin’s sullered a Meals £4 4s. Od. and accommodation 15s. (tents). Fntry spot of bother from a prang and placed 6th. Mallet from for each of the 17 events is 2s. In the F.A.I. events for Marseille was the winner with an Oliver Tiger, his time Wakefield and A 2. the top 2d N ./. flyers will be matched for a fly-off for team selection. Some »* ■ ■·■··· i of the lads have been hard at it "O.DISG p»R0P OTwN T··r-.:.r practising in the early hours to make zt$ max Blau. acth. sure of qualifying, the picture at the top of the page opposite was taken at 04 : 31) a.m.! The N.Z. Nats were held over the New Year Holi­ days at New , where it is supposed to be calm until 10 a.m. Competitors for all specification events have to supply stout paper templates as a processing aid. Yet. it certainly is a dillerent sort of Nats, down under 1 New radio equipment is announc­ ed in Aforiel Xew.\ maga­ zine. It is produced by John Mar­ quette. who has been to the forefront in R C flying out there for some time, and known as Advance Radio Control “Silvcrtonc” with an ap­ propriate Boomerang trademark. Left: Canadian Wake­ field which placed 3rd in I9S9 Worid Champs, at Brienne Le Chateau, France, with 245 sec·, in fly-off. Reproduced from M.A.A.C. Bulletin. Below is the latest Australian Taipan 2.5 diesel, shovsi.ig screw head fitting and single exhaust port. aaaa February, 1961 99

Right: Early bird* in New Zealand are from the Upper Hutt club and they’re practising for the team elims. at 04 : 30. John Malkin and Bill Cook hold their Wakefields, one belongs to Ed. Malkin, who took the picture. Ed. returned from England last year, having enjoyed two British Nats.

Single channel lone, with ground based Tx and alloy cased Rx is claimed lo be the lowest priced, precision built outfit on sale in Australia today. Cost is £A32.9s.4d. complete. Another new product from the very 'ively Australian model trade is Gordon Burford’s latest 2.5 c.e. Taipan diesel, a loop scavenge motor which sells at £A4 19s. 6d.. there is also a new Taipan 15-glow in the oiling. Coupled with the increasing local production of quality kits, these new items will hit the import business to some extent where lax and freight costs tend lo make some Australian retail ligures seem astronomical, even allowing for the lower value of the £A compared to Sterling. The Australian Nats, are also a New Year holiday spree, taking place this time at Rosewood, about 36 miles out of . lull accommodation, including meals was offered at £AI2 plus an extra pound for the Presentation Dinner. Entry lees 3s. per event, plus a 5s. administration charge, and field fee £AI per head except for those taking lull board. We mention these matters for the special benefit of British modellers who expect more for their puny investment at the annual S.M.A.E. Jamboree. The F.A.I. stunt pattern was used for the Hearn’s Hobbies Trophy, a bi-annual event that

Right: Yet more of those Japanese forward fin experiments, re­ produced for "Koku-F.in" the dimensions are all in millimetres, and all models for the *A class. Should be a few ideas to inspire "designers’’ to try their hand, similar airfoils are used for all three, as shown in centre. Below: from Poland. Stanislaw Schier’s sport moJcl for land or hydro operation is tailed "Wicherek". At bottom is magnificent solid scale PZL P-llc by Benedict Dabrowski, a veteran pilot in LOT, the Polish Airline. 3,000 hours work on this I 2Sth scale model has resulted in a perfect replica of the plane that flew in ’39—with markings and detail from our plan in June ’60 issue. m W m 100 February, 1961

attracts a big entry and lias done much to keep Victorians on top in C/L aerobatics. The Triangle ap­ peared to be the undoing of many, for this was the first use of the manoeuvre for some; but still it was a close contest with Doug Marlow and his OS 29/ hit bier in slight lead from Alan llolthanfs OS 35/ Tlwndethird. That kind of situation sounds familiar; but the fact that all entries used OS engines and Palmer type tanks is something unique tlo Australia. Team race men won d probably like to know how llarod I lanagan can do 10 miles in 8 ; 08 with a 65-70 lappage. That was his practice performance with C lass I Oliver Tiger model (16.4 c.c. tank) for the “Beautizone Champs." at Coifs Harbour, but in the event, the up line broke. 'Null' said! Team racing is much on the wane in its established .29 class in the U.S.A. and Canada, and Rat Racing so much on the upswing and de­ veloping in performance that it will soon set a problem for the admin­ istrators. Originally conceived as a "poor or lazy man’s form of racer," the Rats have become slickly finished speedsters with hottest 35*s, pen bladders, pressurisation, etc., reel­ ing olT up to 115 m.p.h. In Canada, we learn that the Balsa Beavers of Toronto, who publish a line news sheet known as the Airfoil (new section each month on the cover too) are keen for a marathon race, having read of the Brazilian 1.000 lapper in this magazine. 100 miles is their mark (1,400 laps) and a half distance trial run over 700 laps for 50 miles has started the ball rolling. Time for this distance was 51 minutes 15 secs, by Ken Sandham Jr.’s McCoy 35 (iitilion Rat Racer. In a second session, Ken tried an I nya 29. which was faster but fell down on re-star’s. The bug has bitten; but soon the snows will come and the Balsa Beavers then turn to their unique winter sport of Snowmobiling. This is ski- racing with a wingless fuselage tethered toa pole. Motors range from .049 to Lawnmowcr units “borrowed" whilst in store. One to four skis have been used, but the rules call for 100 sq. ins. of ski area per cubic inch displace­ ment. Thus a .35 must have 35 sq. ins of ski surface, l ine length is 52 ft. 6 ins., timing starts after the first com­ pleted lap and lasts for seven laps, t sually a 50-ft. line is provided and everyone uses a 30-inch bridle. Oh. and by the way, the “model” must not be airborne for more than a quarter-lap and don’t laugh as some have done wingovers! Who's for Snowmobiling when the fluffy stuff falls? Those in warmer climes can do the same over sand; but don’t forget to ballast the outer ski unless you want a hair-raising ground looper. Also from the Airfoil. we must record J. V. Grant's amusing epistle entitled: “ When oil else foils, follow directions" .Yes, YOU know. Take the engine out of the box, study it with an air of long experience, put it on the bench with the favourite prop and ruin the shaft bearings before the piston has a chance to scat properly. It’s a common enough talk, and J.V.'s account deals in particular with the early Johnson instructions which called for an apparently drastic yet most effective pro­ cedure. J.V. suggests that modellers should reverse their habit and “hollow directions, all else may Jail". February, 1961 ΙΟΙ m b »

lr o m v i hftii remembered something area. Prizes are to be awarded during the from i»ur November News when appealing coming year to the overall 1 I champion, l«»r the owner of a Diner Super Cruiser Iasi (L III· ami to the winners oi the individual I I month! Same model was announced as classes. Siretton, their regular airfield, has making an out ot sight (and site) flight in — \i:\vs been turned into an open prison, thereby that edition, so we've created tin· precedent necessitating the postponement of the M reporting a loss and a ‘‘find" without Winter Rally in December Subject to connecting the two. Ah well, even the best obtaining a suitable airfield this will be of magazines have to run a red face depart­ \ o r l l i U p s Ip n i held on I ebruary 5th. I lie Dinner was ment ! though SIIARSION I).MS. fixing held following the Λ G.M., the number ground at lloughcnd I A Ventre i' over­ present being over ftO. more than most S o u th >1 i

AT THE CROYDON GALAS: I. Two Surbiton power men having a quiet day, Vic Jays holds for Ken Glynn at Croydon Rubber Contest at Chobham. 2. George Fuller sets the fuse on his 300 sq. in. model at Croydon Open Rubber Contest. A. John Hancock of Hayes and Thermal Hopper jA model at Croydon Power Gala held at Chobham. 4. JA winner Tony Young of St- Albans, starts A-M 3S "Dixiclander" which got him fourth place in open event at the Croydon Power Gala. 5. Reg Boxall winds, helped by brother Fred, wing folded after hasty repair, putting him third in the fly-off. 6. A Crisp of Abingdon fits his prop: model held by Dennis Partridge. mm 102 February, 1961

Active Membership has slackened off since trying to fill out the large hall used even A n g lia summer, and any unattached modellers or though there were even more models than The DEBDENAIRS held their A G M. on an> interested beginners are invited to on previous years. Two or three members November 25th at I.oughton Hall. Norman contact the secretary at 89 George Street, left recently and they intend to try and form Crow hurst presented the trophies. A free- Thornaby-on-Tees. Yorkshire. a club of their own to be entirely devoted to flight power trophy was awarded to J. \o rtli« krn F E. but as both our comp, and asl. comp, Atkinson ( Dixielandcr) and the glider cup secretary arc F.-F men we can’t sec the went to D. Galpin (IVoodforii -Special). I he ever present noise problem has been necessity of this. (Here! Here!). The club who also took the Team Race trophy and rearing its ugly head in HALIFAX M. V.C. membership still stands at about 35. and the Club Champions Shield for the second recently. with the coming into force of the any keen livers in the district should contact year in succession. Doug Galpin was Noise Abatement Act. This provides Mr. I. Bracken, 17 Mahlon Avenue. South residents adjacent to the Hying held with a re-elected as comp.-sec. Present activities Ruislip. if (hey would like to join. Members are K. l.P. in the club-room and preparation means of ending all power hying in the are still mystified as to how a certain article for next season's team-race circles. immediate vicinity, and it is feared they will in a recent livening Sews concerning them “ It's easy, all you do is hang on the handle, not miss this opportunity to voice their appeared, and arc wondering how it got and feed a little down” , that’s what the disapproval of these activities. At a recent there. The combat team is busy designing expert told F.A.S.T.F. members. It did a meeting of the Northern Area Committee, next season’s combat models, which should perfect wingover into the tarmac at about the Halifax representative was accused of prove even more formidable than before. I40m p.lt. I hat’s a monoline trainer that profit-making activities in connection ith Most members will be using Copcman tuned the Northern Area News, a non-profit was. The Club are ail getting tuition in Tigers although a few ETA !5's arc being speed flying and now have six “ B" speed making venture, governed by the Northern tested. planes in action, buzzing around anil two Area Committee. This, the Halifax members The forecast rain held off for most of the McCoy 60’s. Someone sneaked an ETA in feel, was most unjust and take this oppor­ day at Chobham for C.'ROYIX>N& l).M. \.C. tunity of expressing disapproval. One club amongst the Doolings. and turned 149 Rubber Gala on November 20th. and in m.p.h. and he said he wasn’t try ing! The next member recently built and finished a 1.5 spite of mediocre visibility and quite strong stunt model m two evenings, whilst another time he flew one of the Doolings. did 60 wind at times, some reasonable times were laps, and collapsed through fatigue before has been running an ETA 2‘> on the local put in. the top seven contestants all managing flying field. (Now I ask you, surely the landing the plane . . .oh dear rebuild! over eight minutes for three flights. 200squjre They had a four-hour work-out with the residents have something to complain inch models were much in evidence, but about here concerning the “ever present" ETA I5's in "A " Team race planes one from tho visibility point of view wore Sunday afternoon in pouring rain. Average noise problem), and is now building a possibly at a disadvantage in the murk below Dalesm an for Class I). Earplugs unvone? performance was 97 m.p.h. over 37 laps. the hori/on. John O’Donnell repeated his Really, mad keen, these I AS. 1.1. Club Members of WHARFF.DAI.E VI. V.C. are last year’s win with the inevitable Maxie currently engaged in conducting talks on bovs, the wives say "M ad", and leave it Mk. N. runners up being country member at that, still never mind, eh? They would like team racing. A Wharfcdalc delegation was Elliott and Fred Boxall. whose wing folded in attendance at the S.VI.A.C. A.G.M. held to visit some of the other clubs around their eight seconds out after a hasty repair before area for friendly meets. If any one is interested. in Birmingham. Only criticism on this the fly-off. meeting is that too few clubs seem to realise RESULTS Phone Shelford 3042. their duties in this held as illustrated by the very low attendance. O f interest to C I. 1. .1. O'Donnell Whiteficld 9:00 4- 3:21 S o u th e r n enthusiasts is a proposal to include T Racing 2. J. Elliott ... C M. 9:00 I 3:03 The main interest in the IIORLEY M.A.C. in the Area Championship events, “ to be .3. F. Boxall . . 9:00 1 0 08 is control-line, and members arc mass- considered by the -S.M.A.E. Council” . l itis Overall Gala champion for all three producing Peacemakers to be powered by yeai (1961) they will be holding the first open events this season was George Fuller, Silver Arrows and ETA I5’s. I* Barton has Wharfcdalc C L rally. Events will include of St. Albans. built a team-raccr with ormlhopter tail- \. A. A: B. I R plus stunt and combat. planc(??). Plans are going through for a i)alc to be fixed for soon after the Nats, U ld la iH l club-house, when R.T I*, (round the pub) venue will almost certainly be R Α.Γ. On November 26th. MARKET 11AR- flying will be indulged in. RufTorth. Also for C' L. fans, a request lias BOROl Till M.A.C. took part in a local Members ol WOKING M.A.C. attended been made to the S.M.A.E. to hold C I. Youth Exhibition. A static display consisted many rallies last season. P Newell gained stunt and speed (all classes) at the 1961 o f about thirty models in various stages of two third placings with his Mills .75 powered Northern Gala in September. This will make construction ranging front a Therrnatiu, \A power model; the first at S Midland this usually well attended rally second to l .eprerhaun and : scale A lister down to Gala and the second at Surbiton. The none for C I. events. chuck gliders. Practical demonstrations combat lads arc now abandoning wings in included single and multi-channel R C favour of the more conventional layout, L o i m I o i i (flving!!??) and “ Bambi” powered R T P resulting in considerable improvement, HAYES D.M.A.C. look hack on I960 as scale models. The Annual Redfern Rally although no one has completely overcome one of their most successful seasons by far will consist of a secret time competition. engine difficulties. Interest in Γ R is increasing foi Contest placings. Members accumulated This is sponsored by the Club’s chairman and ETA 15 team racers arc in the course of 35 first, second or third places in contests V. Redfern. Any number of flights arc construction. Several people arc obtaining up and down the country (including 13 permitted and competitor nearest "secret fast times for JA I R during practice firsts). Top individual scorers were: Mike time" is winner. This time will be in scaled sessions, but such has yet to be achieved in Smith; Jim Dugulcy and Dave Batch. I’hc envelope to be disclosed at the Annual contests. A new member to the club is ream Race types can claim 17 of the 35 General meeting in January when prizes working hard to add that extra bit of spit total pi icings with their Mk. 2 Silver Streaks. will he presented. The latest trend in the and polish to his multi R C schedule and wc J. Baguley took 5 with his 8 foot and 12 ft. club is for contest power jobs and “hot” have hopes for him next season. At a recent span gliders. Control line Hying goes on engines are appearing in increasing numbers. meeting the S.M.A.E. film of the 1957 Nats, most Sundays in Cranford Park, but they Membership of M.A.C. is was shown together with one depicting I lie picked a bad day for the Club’s Combat now up to 110 and despite the recent bad club’s own efforts at the South Coast Gala. competition, a steady drizzle all day long. weather, meetings at llraunstonc Aerodrome On I riday November 25th. MEDWAY Now that the cold wet weather has have been well attended, with strong combat, M.F.C. held their A.G.M. and the election confined the activities to the Clubroom, the free flight scale, and radio groups flving of Committee members resulted in S. main interests in KNFIELI) & D.M.A.C. arc regularly. Mr. Summers has presented a Ramsden being made Chairman, H. Harding rubber powered R.T.P. team racing and cup to the club as trophy for a monthly being returned as Treasurer, and I). W. experiments with electric R.T.P. using the combat competition, which should stimulate Richmond taking the position of Secretary. new German motor. Members noticed in still further interest. A vigorous contest programme is being “ Round the Rallies" on page 676 of the A recent Bring and Buy sale made an planned for the coming contest season, Christmas Ai r o s i o d i ι i i k the statement that enjoyable evening, with about £8 changing and hopes for success with new models "Stoo” Steward and Chas Taylor set up a hands for a collection of doubtful junk. under construction. New members arc new all time Class B team race record for The annual Dinner held on Saturday welcome. 10 miles of 6.48 at Cranfield. They feel they Dcccmbcr 10th was a great success, with 73 really can’t let the West Essex boys get away members and friends tucking into roast South W estern with that one and remind them of the results turkey, etc. before a minimum of speeches, South-West Radio Control M.F.S. held of the Ramsgate meeting the previous week, the presentation of trophies, and then an its A.G.M, recently at Paignton, by kind where the Walker Tuthill team set up a new evening’s dancing and party games. invitation of Mary and Courtney Gill. Far- record of 6.44. breaking the old record of The winter building contest is now under reaching plans were laid for next season, 7.25 already held by them since the way. the model this year being any stunt with regular monthly rallies (alternating meeting three—or was it four?— years ago. control-liner capable of the S.M.A.E. Sport Contest) on the first Sunday of each Incidentally the motor they were using was schedule. First round February 1st. Λ calendar month from March 5th to November a standard ETA series 6C which was still Social is planned for mid I ebruary. and there 5th inclusive. Opening rally at Winklcigh running in. doing a steady 120 for 37 laps arc prospects of our obtaining a club room airfield (Sport) followed by first Contest until it ran the tank out on its shaft at and workshop in the near future. Unfortu­ Meeting at same site on April 2nd. Eater Cranfield—the motor is now run in! nately the Club will nut In* running a combat sport rallies to be held at Salcombe. S. Devon, NORTH WOOD M.A.C. third annual rally at Staplcford Hall this year, owing to and contest rallies at Winklcigh. all properly exhibition was a very successful affair, past financial losses on the event, and the organised and controlled by stewards, with although some difficulty was experienced growing disrepute of combat flying. P.A. equipment, rally rules, etc. to ensure a a a o February, 1961 103 s S s m s m

no loss of flying time. ( I Ins is a new year scramble. In the first place it was fine, I ngland, who is interested in Scale I ree- resolution!. It is hoped to hold a hit: "Open” then about 20 members turned up. 12 to I light anil Control-line Stunt. K C event at Wmklcigh on August Oth. compete. Having banked on the u-.ua! Tut Cl HUMAN provided tins does not clash with any similar weather and the usual 5 or f> members fixture elsewhere. I urilier details will be Hying and only having .1 stop watches this S«*«TH;iri;il < luiiiUf^ given later. presented something of a problem’ However, Isle of I Hu net SI ·!.(’ . Mr R Weight. with the aid of some wristwalches. and the A.R S.H R P . ‘>0 College Road. . M «‘s f m i holding of three 20 minute rounds they Kent. OLEV I’M M A C. A C M was held in managed to decide the winner before daik S lu ik c t J fit r/ι, .,·. tuyh W If . D. < ioodman. coniunction with their lir%t indoor contest, just! John Blackford, very lit. but veiy tired, Milbcrcst Avenue, Kibworlh, Harcourt. in an attempt to coax a lew more members managed to keep his glider, a \otun airborne Le ices I oi along. However il appears that an A.G.M Im II mins. 41 secs of the 20 minutes N*ii II \ l I f K Wigm.in c o Wi«king complete with scale K I I*, contest, i* no bad going considering the two minute Model Supplies I .id.. I Walton Road. competition lor Saturday evening I \ maximurm. 2nd was D Harper with 11 mins. Woking. Surrev. programmes, or other pursuits. I he contest, S secs, dying a Bantam powered Chuttcrhirx. M u B u iv \/./.f .. D \\ Richmond. 5 to be held annually, was lor a Irophy Church Icrrucc. I uton. ( batham. Kent. present oil In our Hon. President Mr. Λ. S c o tla n d i.eicester S I. l.c . 11. S. I letchcr. 22 S yea more Hlackhourne. hntties though small in DUMBARTON M.( . s now entering its Road. Burst a II. I cicn. number, were to a high standard in general third season, and is looking lor new members. IMuiemtir» M l( B. II Dawson. 4t) Points were awarded tor scale, finish and Anyone aged 14 year·» and over is welcome Pairview Drive. ('higwvll. I " t \ . duration, one or two fine models falling and this is a special invitation to lads m the B «///<;>< i W .f .f . R Angell. 60 Downturn! down on the lattci score I he contest was ( Ivdebank area, as this is the only area Road, Hc$wall. Cheshire. indeed by Mr. Black bourne who later around Dumbarton not represented m the /''•uhon Ac /). '/. I t . 1 Wilson. ·» Main presented the cup to Derek Harpei. Derek's club. AH branches of acromodclling are Drive. Poulton-le-l v Ide. Sr . Λ· w/»»i n just had ' he edge ovei I he opposition encouraged, but main interest is in I earn //; interest in the \*> M . School, Woodwork Room. Cross bit Road. Has. Nr. Walsall there has been a spate »·ι activity in the Dumbarton. .Si 'H onks ίSi D .M Λ < .. D Edwards. club recently. I .a'accountably mx members Wiuser, "Oastbrook". I cistern Lane. turned up at the 'Ccoinl indoor meeting all 1*4*11 l*als Oilbrd. Kent bent on smashing the K I P rceord which Pen Pal in l : S Λ. wanted lor A. < oven wood C rvstal /G/w. ι· \f I f . A Saunders. 1| has been unmolested lor o i w 1 years now age 14 years, interested in C l classes. Maple ( oiirr Maple Road. Penge. S I 20 Unite a hectic lime ensued with the record, \ Greenwood. 61 Southfield Road. \\ orthing. < hichester l>M f.C . J N! Devenish, and motors, being broken at I'reviucnt Sussex. U S. modeller wishes to correspond <» Si. M ary’s Road, Boxdrove, < hielieslei intervals throughout the evening. I he with British modeller aged Ι5-Η» years Sussex. unscheduled contest hnally ended about /enow Grocltocki Jnr., I f> I ynda I nne, ( in-ncestt r D St. i.C .. S. I Trindcr, 71 II h) p η- Charles Aitkinhcad triumphing Rochester 11. New York, l S \ Hans Ciicklavte Stieet. t irencevler. Glov with the lina 1 Might. He managed 2 mins Swoboda. Villignen.Scbwvv, I.archenstr: S. Chit ton ft \l f ( . II Rutter, Jl Lake 15 seconds with a microhlm covered model Germans. I·) years-old and particularlv Walk. Clacton-on-Sea. I ssex. I hey realise that this time is low by some interested in Λ I and A 2 classes. Will C o u 'M ti ft '/ 4 ( .. I . .1. lord, ft Ulvers- standards, but wo have done very little correspond in English. Wishes to exchange crotj R- uni. t oventry K I IV duration work and t lias more than German plans and magazines for Pngloh. H u tto ie \f I ( . W. .1. Horton. !<>2 Penny- doubled the previous record. The commit lee Peter Koch, Winulta, Yorke Peninsula. mead Hal low . I s'cx. were caught unawares on December I lift, South Australia would like t«* have t lail. I , iyh \/ I f .. K. Nates. I Kibble Grove, the dav scheduled for the Newman cup for the same age (14 years) preferably from i cigh. Lanes.

f HEW FORMULA PLASTIC EHAMEL I

REG O Enough for the job and only a bob! JOY “NEW FORMULA” Plastic Enamel is now available in a new con­ venient economy size tin only I/-. The 18 beautiful contem- I porary colours, including black | / m and white, can be intermixed " / to provide a wide range of perfect colour matches. No longer need money and enamel be wasted, there’s “enough for the job and it’s only a bob!” Joy Plastic Enamel has good flow and is heat, water, gruise. oil, petrol and fuel proof and quickly dries to a high-gloss glass hard abrasion and wear resisting surface.

LOOK for the counter dispenser in your local shop which contains the complete range of colours and shade card. Joy Plastic Enamel has universal use. Has better quality and greater quantity. Ideal for use on models, craftwork, cars, bicycles, furniture, poly­ styrene, wood, metal, glass, and plaster etc. In fact for every modern decor where contemporary colours and beautiful finish are a must. Professionals and amateurs alike have enthusiastically product tested this new formula plastic enamel and have without exception endorsed the makers claim that Joy Plastic Enamel is the greatest advance in enamel finishes. TURNBRIDGE LTD. LONDON S.W.17 February, 1961 x s r n M m a 104

THE M OD EL SHO P () MODEL AIRCRAFT KITS. ENGINES. ACCESSORIES & R CONTROL MAIL ORDERS RETURN please ENCLOSE POSTAGE KITS ENGINES STERLING P.T.I9 R C 73'9 A.M. 10 ...... 56 8 MERCURY COBRA 28 6 A M. 15 57 10 STERLING RUFfY 82 3 A.M. 15 MULTI-SPEED 70 8 STFRUNG IMPERIAL 82 3 A.M. 2 . 5 ...... 66 5 MERCURY GALAHAD 36 - A.M. 3.5 69 6 GUILLOWS EXPLORER D C. BANTAM ... 34 10 R C £7 15 0 MILLS .75 63 10 STERLING MAMBO R/C K K COBRA GLOW ... 39 6 TRAINER 73 9 RIVERS 2.5 Mk. II 125 8 AERO "IS” 119 6 RIVERS 3.5 Mk II 125.8 AERO ”9" R C 99 6 FMO LITTLE BOXER Twin 261 K/K SPECTRE 2 5. 3.5 c.c. 37 6 E.D.2 46 82,7 VECO £4 9 0 E.D. BEE Series II 56,3 R.M.A VIKING R C F.O SUPER FURY 79 6 2.5-Sc.c. 132 6 FROG VENOM ...... 58 - R.M A. VAGABOND R C FROG VIPER 58 2 5-5 e.c 125 P.A.W, 1.49 8 6 - YEOMAN DIXIELANDER 27 6 P.A W 2.49 Mk II New 98 - YEOMAN BAN I AM COCK 8 II COX OLYMPIC 130 - VERON VELOX 39 6 COX SPORTSMAN 95 - GRAUPNER MUSTANG 41 9 ETA IS 2.5 Diesel in Stock 1 19 6 GRAUPNFR ULTRA ETA 29 VI.C Glo« Ml II STUNTER 39 - MERCO 29 and 35 R C 152.6 GRAUPNER SATELIT R,C I0S cOX 15 65 - GRAUPNER ATLAS 41 9 0.5 35 Mk III £6 10 0 GRAUPNER CESSNA 180 55.- O.s. 35 R/C CUSTOM 158 4 Coloured Nylo n. 36 in. X 54 in. Black. Royal. L. Blue. Yellow and White 36 in. x 48 in., all colours 7 '6. Radio Control Gear: R.E.P. Reptone £15 8 0, R.E.P. Now Unicone £16 10 6 Tritono £20 13 0; Sextone £31 16 3; Octonc £50 R E P. PC Tx Kit 20 6. "Aeromodcllcr' Receiver Carrier Kit 64 . Mini- uniac 5 2-; Omniac 60.-. Rising Escapements, L W r 2-pawl 41 4, 4-paw| 44 3; compound rubber-driven 49,11; Bonner Duramite £5 4 0; K.S.B. Timers 31 6 DFAC Cells .225 Dk 1.2 V. 3/11 DEAC Cells .225 Dk 1.2 V. with solder tags 4'4- 13 BOOTLE STREET • MANCHESTER 2 Tel BLACKFRIARS 3972 . .

READING MODEL SUPPLIES Bond-Fast P.VJL

fo r RADIO ★ Now in general use throughout Great Britain “ R F P T O N F ” Unit construction with Plug in batteries *·Bond-last'* has particular advantages for air­ ^ and Motorised Compound actuator N O wiring. N O fuss. N O installation worries N O trouble! Ideal for frame construction. Due to its deep penetration beginners. Only O N E tuning control, complete with transmitter into all types of wood it has the tremendous joint (hand held and neat in sue)—at £15 8s. Od. the whole outfit*—this for a tone set' UNBEATABLE Value—nothing more to buy for strength of 3,000 lbs. per sq. in., and is equally PERFECT single channcl R;C! effective on balsa or hardwood. It is clean to use and dries without trace, saving several ounces of weight on a large model. It is slower drying than cellulose cements, which enables the more difficult building operations, such as sheet covering, to be carried out more easily. Its water-resistant properties also make it ideal for model boat building, and the plastic squeeze bottle makes it convenient and economical to use. Why not buy a bottle from your local Model Shop ?

No. 21 2 oz. Plastic Bottle 2/3 COMPLETE No. 22 4 oz. Plastic Bottle 3/9 EQUIPMENT No. 23 8 oz. Plastic Bottle 6 - Combining RANGE. RELIABILITY. DURABILITY, achieved by up-to-date No. 121 12 oz. Refill Bottle 1 1 - "TONE SYSTEMS" Full 12 months' guarantee. ••UNITONE” single No. 122 20 oz. Refill Bottle 9 - channel tone Hand held transmitter £9 3 0. 2?-oz. Receiver £7 7 6. ••TRITONE" 3-channel reeds Hard held transmitter £9 6 6. 5-or. Receive*· £116 6 "O C T O N E " 8-channcl reeds. Simultaneous Remember, there is no substitute for LePage's ! operation. Crystal controlled Transmitter and matched 10-oz receiver £50 0 0. "S E X T O N E " 6-thanncl reeds Crystal controlled trans­ mitter with ''Joystick" 8-ox. receiver £31, 17 3. H P Terms available from £15. Demonstrations arranged. IE PAGES BECKENHAM · KENT I HOSIER STREET, St. MARY’S BUTTS, READING I LIMITED Tel: Reading 51558 / M a s February, 1961 105

ftOfiENTI N E · PORTUGAL · Vt/ggSLAVti

More and more satisfied clients the world over receive their regular shipments of Lduado—such is the popularity of this fine batsawood used by modellers everywhere. Equador bal&awood is supplied in metric and English sizes TRADE PRICE LISTS ON APPLICATION TO SOLE MANUFACTURERS AND SHIPPERS

AUSTftAUA MALTA 272-274 HIGH STREET · SUTTON SURREY * VlGilant8291*2

ARTHUR MULLETT’S ★ No P T on overseas orders. Parcels sent by air a t cost to order. ★ Orders over 40 - from abroad + Orders dispatched by return. acknowledged by airmail. ★ SPECIAL ATTENTION TO I t Full official rates allowed on REQUIREMENTS OF H.M. foreign currency. SERVICES. WRITE FOR DETAILS. ★ Goods sent C.O.D. where operative. Home Buyers — Orders over 30 post free. Under, please Goods insured in transit. BRITAIN'S OLDEST , BRITAIN'S BEST add I 6 for p p.

Two "MUSTS" for RC RADIO CONTROL We can service commercially· ENGINES Flyers E.D. TRANSM ITTERS madc R C equipment. W rite for •■GLO-TROL" PLUGS quotation w.th article. If you GLO-MOTORS (Modulofed C. Wl Ceramic lined. Only Black Knight ■ I single ch.£5 17 6 21 3 hove a query we shall be pleased D C. Bantam 0.75 30 4 10 from Arthur M illctts 7 6 101 4 Black Prince I £10 0 0 21 4 to advise without obligation. Merco 29 18 3 TORNADO PROPS Black Prince 4 * ch £12 0 0 43 4 Mcrco 35 101 4 18 3 21 9 The only prop for 35 Black Prince 6 6 ch £13 2 6 47 S FRED RISING EQUIPMENT Mcrco Multispeed for R C 130 6 R,C motors 11x4 93 P.C.I single ch. earner £5 0 0 18 - 2 Pawl Control 35 6 4 Fox 15 2.5 c.c. ... 70 6 P;P either item 6d Eta Mk. VIC £5 19 6 - 22 5 E.D. RECEIVERS 4 Pawl Control 37 6 6 9 Compound Esc 42 4 7 7 DIESELS Airtrol Hard Valve I ch. A Phone call brings it by return carrier £6 2 0 t 22 - Rubber Esc. 21 3 10 Silver Streak Tuned 134 21 - Modulated C W Receivers Taplm Twin . . £7 7 0 2S - If it's really urgent, ring us ot Black Arrow I I ch. £6 8 6 1 23 2 BRUKA R C TANKS A.M. 1.0 c.c. 48 8 9 BRIGHTON 27963 Black Arrow 4 4 ch. £12 7 6 44 8 Designed specially for R}C A.M. 1.5 c.c. 49 - 8 11 Black A rrow '6 6 ch. £I4 7 6|5III A M 2.S c.c S6 3 10’2 and we will despatch your order C.O.D- flights. Telescopic 1eed far any by return the same day. Simply order position with non-refurri fuel A.M 3.5 c.c 58 10 108 (3Γ x 2J" v ΙΓ — 8 or.) by 'phone and pay tne postman on Boomerang (I ch. earner) £5 7 6 18 - feed to prevent surge. D.C. Suocr Merlin 46 7 - D C Dart Mk II 8 7 delivery. We’ll put it on the Pus if you 200 c.c. — 20 4. 250 c.c. — 56 are on a Southdawn route out o f Brighton. 23.6; 300 c.c. — 27 - E.D "Pep" 0 8 c.c. 32 6 510 factory-frcsh Batteries for E.D. "Hornet" 1.46 46 8:4 KITS BY ALL LEADING BRUSH equipment a t it»:: fe d by REP E.D. Super Fury BB 63 9 11 *6 MAKERS; GRAUPNER. VIKING, manufacturers. Unitonc Tx ... £9 3 0 E.D. Hunter 66 M il etc. Also PLASTICS Unitonc Rx ... £7/7/6 E.D. Mk. IV 65 1 1-9 Frog 80 39 6 6:6 ACCESSORIES Octone Tx and Rx ... £50 0 0 Sextone Tx and Rx £3117 3 Frog 2.49 BB modified 73 4 12.2 E.D. Octave 8-tuncd relay £3 0 0 Frog 3.49 BB 68 - 11:2 Arthur Mullett Ltd., Britain's Bleep Relay £1 4 0 N EW 16-oz. SQUEEZE Frog 3 49 PB 59 8 • 10:- oldest and best known mail-order E.D. Multi-channel motorised Servo Frog 1.49 Vib 4S 9 • 7-2 house, is under the direct personal Unit — in our opinion the best BOTTLE For radio flyers, etc., 103 '/% Frog 1 SO B 46 7:2 management of Ian Mullett who ever at the price £3 0 0 10 10 P. A W 1 49 72 10 13,-2 is himself a practising radio­ E.D Mk. II Comoact Est £10 0-38 air tube. Complete with 9' tube 2/H Oliver Tigers (Tuned) to Order control enthusiast. The latest E.D. Mk. Ill Standard Est. £10 0-38 large stocks o f Spares, Marine equipm ent is offered and all lines E.D. Mk. I Clockwk. fcst. £2 8 0 · 8 8 LSS /EE as available. Motors, Accessories, Fuels. advertised are test.approved

ARTHUR MULLETT LTD., 1β MEETIH6 HOUSE LAKE BRI6HT0N, S \ M s m m 106 February, 1961

A GET ON THE lies! of terms ‘cut with II. S. Today φ Any order totalling £8 o r m ore, one-fifth deposit — balance in 6, 9 or 12 months. above EXAMPLES: φ Topflite ‘Orion’ Multi-Radio Kit 54 - Deposit, 31 - Monthly for 6 months the • Black Prince Arrow Single Channel R C Unit 70 - Deposit, 29 - Monthly for 12 months • Trudson ‘Viking’ and O.S. Max II 15 engine 53 6 Deposit, 21 - Monthly for 9 months rest’ A .'efter or 'phone (.all (Bolton 27097) <*

A deluxe home craftsmen tool set that is a complete workshop in itself precision tools for every cutting, shap­ ing or modelling job. The kit is lilted into a hand­ some polished beechwood pre­ sentation case Distribution: Complete Home— E. KEIL & CO. LTD. 45/- Export— MODEL EXPORTS LTD. Other modelling Kits from as little as 6J9d. Manufactured by: Multicraft Kits. Tools & Accessories are available from leading Dept. Stores, Hardware & Hobby Shops. MAROWN ENGINEERING LTD MULTICRAFT LIMITED GLEN VINE — ISLE OF MAN 35, CLIPSTONE STREET, LONDON, W.l.

Kindly men! ion AERO MO D ELLER when replying to advertisers February, 1961 107 M aaaoiLBS)

HUNGARIAN COMPETITORS WON AGAIN Using Hungarian-made Special Model Engines At the W orld Free Flight Power Model Flying Championship in Cranfield preceding the U.S.A. and French teams. Exporters of Serial Model Engines

ARTEX HUNGARIAN FOREIGN TRADING COMPANY BUDAPEST V. Nador u. 31. Au of the New Type Serial Model Engines VT I ccm VT 1.5 ccm VT 2.5 ccm

IN AUSTRALIA : EDEN DISTRIBUTORS PTY. LTD. 107 LIVERPOOL STREET , AUSTRALIA

SOOTT-RltOWXK How-to-do-it ★ ★ Prompt Mail Order Warehouse 'hr ★ ENGINES Lightweight rubber ME Heron Ic e Diesel . 47 3 compound 49 I I Cobra .049 Glow 39 6 Aircraft Kits suitable R C: Magazine of U.S. Taphn Twin 7 c.c. Diesel 170 KK. Junior 60 2 5-3 5 r,c 58 - Cox Pcc Wcc Glow 42 6 Veron Deacon l-l 49 c.c. 33 4 Cox Babe Bee Glow 45 - Graupner Piper I 5 c.r. 60 Modeldom Enya I5D 2.47 c.c. Diesel 130 Mercury Ae-onca Sedan 15-10 Glow 81 7 I .5-2.5 c.c. 70 6 19 3.22 c.c. Glow 88 8 Galahad 1.5-2.5 c c . 36 Read FLYING MODELS, 19 Multi speed 114 10 Boat Kits suitable R C 35 5.8 c.c Glow 114 II AeroktisSea Rover l-2r.r 52 6 the only American magazine 35 2-spccd 158 Sea Commander up to 60 9.95 c.c Glow 209 - 3.5 c.c 70 - devoted exclusively to 60 2-speed 251 9 R A F Crash tender, O.S. Pet 1.63 c.c. Glow 47 6 I.5-3.5 c.c. 70 model aviation! Every issue includes how-to- -fc VVe hove alnays stuck over Motor Torpedo boat build data on new model airplanes of various 100 d.ffrrtvif mokes and v/ev ol 2.5 5 c.c 116 8 engines. Veron Caribbean Coaster I 95 9 types (with full-size plans wherever possible) RADIO CONTROL Marlm cruiser l-5c.c. 76 7 ED. 8lack Prince single- We can mar me versions . . . worth-while hints . . . photographs . . . how- channel tone £ 11 14 of Frog, D.C . ED ar.d Taplin to-do-it information . . . and features for sport j Receiver £7 118 engines and all boat fittings. 4-(hannel tone Tx £14 3 4 ORYX soldering instrument. a-plenty! Receiver £14 12 2 Works from I2v. car battery. 6-channcl tone Tx £IS 9 II A must for those in the field Receiver £16 19 5 repairs 25 - Now published bi-monthly Octave tuned relay 60 Electric Motors: Bleep 'd a y . . 24 - Outboard KK-EIrmc Sprite 19 3 Fred Rising Escapements: Frog Swordfish 26 10 Annual subscription: (6 copies 15-) Standard 2-pawl Frog Rcvmastcr 4 6V 16 6 clockwork 41,4 Geared Tornado 3.31 I including postage Standard 4-paw| 4/6V II 6 clockwork 44 3 Victory Mighty Midget Lightweight rubber 25 3 plain 10 5 Large stocks of Aircraft and Boat kits and Modelling sundries Mail your order and remittance today to: always available. Cash with Order or C.O.D. Cheques and Postal Orders should be crossed. We pay U.K. postage on ATLAS PUBLISHING & DISTRIBUTING Co., Ltd. orders over £1 in value, under please add I 6. S.A.E. please for (Dept. A) enquiries and lists. 18 Bride Lane, Fleet Street, London, E.C.4 J. SCOTT-BROWNE (N^o ° N) LTD. 51 QUEEN STREET. NEWTON ABBOT, DEVON Phone 1179

Kindly mention AERO MO PEELER when replying to advertisers & 3 Q M 2 108 February, 1961

I /6d. monthly

T H E MODEL AIRCRAFT SPECIALIST

JU ST O U T ' 1961 K.K. Handbook ALROMODE.LLER ANNUAL 1960-61 Send 2 6 for your copy no*·. Poll Free 11 6 Poll Paid

DE LU X E RADIO C O N T R O L KITS R.M.A. Viking 60' for 2j-5 c.c. Dnecl or G.P engines—£6 12 6 complete R.M.A. Vagabond 59’ for 2J-S c.c. Diesel or G.P engines—£6 S 0 compl. Full range of E.D. Radio Control Equipment available. NEW! READY TO FLY DUX "TESTPILOT" C L model will» D.C. Bantam—79.11 NEW! Koll. Yeoman Contest Glider at 19 II THREE NEW FROG BATTLE OF BRITAIN KITS: M.E.I09 24'. Hurricane 24', Spitfire 24 —18,9 each. FROG HOT PERFORMANCE GLOW FNGINES—VENOM and V iper- Now in stock. V ERON KITS—PHOENIX 60' Soarer—35 - VELOX F F Pusher—39 6 Colt Trainer—27 6

I PAY BEST PRICES FOR GOOD SECOND-HAND ENGINES

SECOND-HAND ENGINES ENGINES F.D. Bee. Super Merlin. Frog 80— Cobra G.P. 39 6 all at 30 each. E.D. Hornet, M E. Heron 1 c.c. 47 3 Allbon Sabre. Spitfire. Α.Μ.Ι0— Allbon Bantam 34 10 all at 35 - each A.M.25. A M.35. Mcrco 29 and 39 119,6 Frog 2.49— all at 40 - each. Merco Multispeed 152 6 E.D. Racer. E.D. Hunter and Full range of all other diesel AIR PICTORIAL Frog 3 49 all at 42/6 each and G.P. engines in stock. The monthly magazine for the air enthusiast G RA U PN ER KITS in Stock KITS and aeromodcller. Packed with vivid photo­ 24 6 NEW FOR JETEX 35 : Sea Vixen. K.K. Firebird 32' C/L graphs and drawings of latest and older K.K. Conquest 30' Glider 7/ II Temeo T.T.I, N.A.X.I5. all at K.K. Snipe 40" F/F 19/9 aircraft you’ll want to model. AIR PICTORIAL 7/6 each. Jetex 35 Outfit 5 10 K.K. Gaucho 4 4 'F/F ... 21/6 keeps you up to date with world air news. On sale on the 1st of each month price I 6 SEND FOR FREE LEAFLETS ON K.K., VERON. MERCURY. FROG, etc., all of which arc in stock. Stamped addressed envelope please i f SEND TODAY for your FREE specimen copy to Dept A, MOD. 22 & 22a CASTLE ARCADE, AIR PICTORIAL, Rolls House Publishing Co. Ltd., Tel.: 2906S Rolls House. Breams Buildings, London, E.C.4

GAMAC pES A YEAR OF SUCCESSES FOR S P E C IA L “OO” RIVERS DIESELS ELECTRIC TRAIN SET M'ke Smith and Dave Batch First in every Class A Team Race event entered during •^60 (except H. Wycombe and Cranfield) ond fastest time yet recorded in Britain (4.39) at the South Coast Gala (Tangmere). SILVER STREAK If outside our von area Post and Packing 3 - MARK II Made exclusively for Gamages by Tr.-ang featuring the powerful RS2 0-6-0 .C -. — bore .S78 in. stroke 2 .578 in., weight 5.8 Class 3f Tank Locomotive. This fine model moasurcs 4$ in. long, has automatic ounces. couplings both ends, and will haul a tremendous load. Included in the set are 12 pieces of R. 193 curved track 2 straight (I uncoupling), FIRST—British Nationals (June) sufficient to make an oval 3 ft by 2 ft. 5 in. approximately. FIRST—Enfield (June) R.17. Bolster Wagon. R. 16 Brake Van. R.243 Mi ncral Wagon. FIRST—Sidcup (July) R.2II Shell Tank W agon. (Each m easuring 2f$ in. long.) FIRST—Ramsgate (August All body work of tough Plastic and most realistically coloured. FIRST & SECOND Operates on 12-volt D.C. via an A.C. Mains Transformer—Rectifier. Absolutely safe. S.M.A.E. Area Cent. HO DANGER of shock. Complete with full instructions and bottle o f SHELL OIL. Class A T/R. Fastest Suitable Transformer Rectifier 39 6 extra times 4 47,3 and 4 47.8 Battery Controller 3/9 Battery B 3 2.5 c.c. SILVER STREAK (Mk. II) ... £6.5.8 GAMAGES 1961 MODEL & TRAIN BOOK Works tuned version. £8.15.8 132-pages Fully Illustrated AND FOR RADIO & COMBAT with covi s in Full Colour The same basic design, but larger· This is the latest and finest edition to SILVER ARROW and the most powerful 3.5 c.c. date. Packed with deta-ls and information diesel in the world* Anocherwm* about Aircraft. Trains. Boats. Cars. Steam 3.5 c.c. ... £6.5.8 ncr for Combat, class B and R C. E -gmes. plus prices and all the latest Plastic Kits avail- STILL ■ # FOR RELIABILITY AND TOP PERFORMANCE able i" Gamages famous ONLY I r mm Y O U MUST CHOOSE A RIVERS Model Department. Post 6d. K RIVFRC NORTH FELTHAM TRADING ESTATE. A • FELTHAM. MIOOLESEX. ENGLAND GAMAGES, H0LB0RN, LONDON, E C. I HOL 8484 (Sales) Ltd. Phone: FELTHAM 6S5I

Kindly mention AERO MO D ELLER when replying to avdertisers

\ H i February, 1961 109 C M E 3 Q M S

CLASSIFIED ADVFUTISF.TIF.\TS — R<*ad Popular Flying, the monthly magazine of the PRESS D ATE for Issue March 1961, January 20, 1961 Popular Flying Association, the representative body of Private Minimum 18 words 6a. and 4d. per word for ultra light and group aviation. Subscription £1 a year. each aubaequent word. Trade Minimum 18 words 12s., and 8d. per word for Specimen copy Is. 6d. from the each subsequent word. F O R S A L E POPULAR FLYING ASSOCIATION Aiisaldo SVA-5. Fitted with Ohlvson 10 c.c. petrol ignition. Inlaid Londonderry House, 19 Park Lane, London, W .l mahogany fuselage. Screncssima Squadron insignia. 1958 Nats winner. Hawker Fury with K St B 45 glow plug. Representative construction metal for metal, acrobatic. Both I 8th scale, sprung undercarriages, detailed cockpit, throttle engines. Pitts Special with D.-C. Tornado Twin I/6th scale, GLIDING HOLIDAYS AT CAMBRIDGE fully detailed. Red and white; acrobatic. All beautiful to look at and fly. Sensible offers, please, from people who appreciate top-class models. Milani, Glendower Hotel, London, S.W.7. Gliding courses during summer. Everybody welcome. First £5 secures my last season’s Oliver Tiger Cub 1.5 c.c. Nixon, 11 Station Training in best aircraft by qualified instructors. Every Road, Elniesthorpe, Earl Shilton, Leicester. chance solo and soaring in week’s holiday. Full board, Super Fury, £3. Hunter, 50,-. Pcc Wee, 35/-. All just run in. Northage, 15 Ridding Gate, Otlcy. Yorks. inexpensive. Every effort made to give satisfaction. 3 Olsen Remtrol actuators, as new, £2 each. 1 pair Uproar wings, uncovered, Details: Secretary, 3 Pembroke Street, Cambridge £2. Rogers, "Basildon". Chorlcy Road. West Wycombe. Bucks. Everest six reed Rx. just overhauled. £5. Contestor 10 c.c. petrol or Glo motor. £4. Higham. Redgrave, Diss. Norfolk. $A Top Pans. 7 6. each undrilled. Γ.Α.Ι. A Class Pans with fixing holes, tapped to take Oliver. 15/-. Also suitable for other motors. All pans finished. WANT TO LEARN TO FLY? Standard Oliver Tigers re-worked to 12,800— 13,000 r.p.m. using 7 x 8 Tornado For at little at £14 you can enjoy a with E.D. Zip fuel. Cox Olympic, new £5. Fox 29R complete with speed model and pan. £7 10s. All orders Post Free. Overseas Orders invited. Hall, Cm L I III \ Ci II Ο I. I II A Y 133 Westward Road. Chingford, London. E.4. Larkswood 7169. at Briuin's Finest Soaring Site. Miniature electrical hand tool American manufacturer for drilling, engraving, fifing, routing etc. Box No. 641 Send for illustrated brochure to: "Enquiries" a/m 1 E.D. Bee. 1 Elfin 2.49. second hand. 1 Alag X3. 1 Albon Merlin, I Frog MIDLAND GLIDING CLUB LTD., “80", 1 Super Tigrc G20 glow, I D.C. 350 glow, I Wilsco .75, a ll new. Also I Long Mynd, Church Stretton, Shropshire fully built Radio Queen. Wants cover In ft only, and 3 single channel receivers. £30 the lot (o.n.o.). D. A. Blackwell, 57 Road, Earlsdon, , Warwicks. Afromodelu rs, November 1948 to November 1960 (140 copies)—offers. Every model, technical reference S.A.E. please. Sgt. Lineker. 59 Duckpool Crescent, Braunton. N. Devon. or historical book on aviation, Giving up. E.D. Racer, 35/-. Petrol engine, 40, -. A.P S. Electra, practically plus plans, photographs. built, 70,’-. Razor Blade, 15/-. Calamity Jane, Frog 500, 60, -. E.D. compact l'·stamp for catalogue. escapement. 18/-. A tromodillers, 30,-. Plans, 10,-. R. Brown, 52 Addison Way, Northwood. Middlesex. B e a u m o n t Aviation Literature Goins multi. SfC soins. Rcptone. £10. Unitone. £12. Citizenship Rx. new, 2a HidgeAvenue E.D. P.C.I., £12. Cobb Selector 4. Control box £5 10s. Box No. 642. Winchmore IIIIl. tendon, N21 Cox Olympic, K. & B. 29, brand new, £5 each. Eta I5D, £5; Eifllacndcr bookshop open Saturday only 1.5, £3 5s.; Webra 1.5, £2; all partly run in. Frog 150 R. 35.-; Oliver Tiger Mk. HI (tuned), £4; Frog 3.49, £2 10s.; all excellent condition. E.D. 2.46, Frog 2.49. Amco P.B. 3.5. 25 - each, good order. Will haggle. Sleight, Flat 3, Simpson House. New Zealand Avenue. Walton-on-Thamcs. Surrey. f l i f l EIFFLAENDER REBORING SERVICE E.D. Bee, 30/-. D.C. Spitfire. 30,-. E.D. Hornet, new. 35/-. Reply to Dignum, 33 Badric Road. Battersea, London. S.W.l I. \ J I \ J FIELD BANK, CHESTER ROAD, MACCLESFiaD Enya 29-3B, unrun. £3. Eta 29-V, 50/-. Early Fox 29R, minus spraybar 3 4 - H O U R S E R V I C E : R E B O R E S , B E E S 14/-, o th e r e 18/-, u n d e r assembly, £2. Books, magazines. Sawyer, 47 Linden Road, Ashford, Kent. .54 e.c. I'V- cash with order, tested, returned post free In U.K. TRADE and 100 rtr cent, satisfaction guaranteed. Rossi modified G.20 Jubilee £8, Vulcan Jet £12. Rossi speed pan £1 (with M C \A # SERVICE: by return of post, E X C H A N G E spinner) all speed accessories. Send letter and I.M.O. Rossi, via Pace 13, RECONDITIONED CYLINDER UNITS ONLYi Brescia, Italy. D IESELS: 12/4 G LO S: from 15/- cash and old cylinder unit with Ex-Government Stop Watches, 45/-. Illustrated leaflet on request. Charles order. C Ο.Π. 2/- extra. EN Q U IR IES, SPARES, by return, no Frank, 67-73 Saltmarket, , C.l. obligation: please send a stamped addressed envelope.______Frog 349 BB. 38 6d.; Allbon Sabre. 33 6d.; Mills 1.3, 40 -; PAW 149, 58 6d.; E.D. Fury. 36/-; Silver Arrow, 69/6d.; F.nya 35. 65.'-; Spitfire, 37/6d.; McCoy 29, 67 6d.; E.D. Hornet, 36/-; Merlin. 28 6d.; and muny others. Good engines accepted in exchange. Hobby Supplies. 4 Station Parade, STANT PRODUCTS for the MODELLER Burlington Lane, London. W.4. CHis wick 9930. Tatone Clockwork Timers D-T (0-6 mins.) and Fuel Shut Off (0-20 secs.) INDUSTRIAL-TYPE BENCHES — made to order. Weight 4 oz. and 4A Shut Off 30/- each post free from Dave Posner, C O LLA PSIBLE W A LL BEN C H ES — ideal whero room-space 61b Canfield Gardens. London, N.W.6. is restricted, "Fluorescent” Paints. Now available in small quantities sufficient to cover DESK-MODEL PORTABLE DRAWING BOARDS. 300 sq. inches at 2/9d. Colours: Red, Green. J. & M. Harris, 19 Cambridge The old faithful range of PO W ER PROPS. Street. Aylesbury, Bucks. Limited number of Kits, Plans and accessories, all new. at reduced prices. STANT TOOLS LTD. :: I Id MOLESEY ROAD. HERSHAM SURREY S.A.E. for fists. W. Ryniill, 2 Gordon Street, Liverpool 15. WANTED Aeromodeller Annual 1949, 1950. AEROMODFl.LiRS Jan., Mar. 1956; Jan., May 1955; Nov. 1940; Jan., Dec. I9J9; all prc-1939. Soule, 511 I· Avenue Ci, 24-HOUR SERVICE FOR REBORES Redondo Beach, California, U.S.A. HIGHER LANE. LYMM, CHESHIRE Model engine of 15-20 c.c., details to Owen, 206 Quinton Lane, Birmingham A. V. 32. Reborc»: OCC, 5 & O LFIN II/-, Others 14/4; under .S6 c.c. 19/- Keen model aircraft constructor in Czechoslovakia is anxious to contact Cash with orders post fie c C.O.D. 2/- extra. Same service as usual. similar British enthusiast to correspond with and exchange ideas on design APOLOGY and technique. Box No. 643. W e would like to apologise for the dclsy to rebores following last BOOKS month's advertisement this was due to extreme pressure of business; American magazines. Year’s subscription Stodcl Airplane News, 35'-, our much admired 24 H O UR Service is back to Normal. W . F. Birtlcs, Full catalogue free. Willcn Ltd. (I)cpt. 1), 9 Drapers Gardens, London, A U T O VAPORISERS. 93 Higher Lane, Lymm, Cheshire E.C.2. Modcl-Avia. the model magazine that covers the world of model flying. Edited in French. Send for free specimen and subscription details: Model-Avia, 31 rue du Printcmps. Bruxelles 5, . Couililions of Sale Catalogue No. 14 Government surplus and model radio control, over 500 This Periodical is sold subject to the fo lowing conditions— That It llustratcd items. 2 - (refunded on purchase) p p 6d. Arthur Sallis Radio shall not, without the written consent of the publishers, be lent, Control Ltd., 93(a) North Road. Brighton. resold, hired-out or otherwise disposed of by way of Trade except Sailplane ami Gliding—Published every month. Send stamped addressed at the full retail price of 2/-and that it shall not be lent, resold, hired- envelope for descriptive leaflet; or 3 4d. for current copy; or £1 for a year’s o it, or otherwise disposed of in a mutilated condition or in any subscription to British Gliding Association. Dept. “A ", 19 Park Lane, unauthorised cover by way of Trade; or affixed to or as part of any London. W.L publication of advertising, literary or pictorial matter whatsoever. GLIDING T H E ••AEROMODELLER" Gliding Courses. Cornish Gliding Club, Pcrranporth. between 10th April 38 CLARENDON ROAD. WATFORD. HERTS. and October 6th. Apply Tuson, Holmans, Croft, Rose, near Truro, Cornwall. Phone: Pcrranporth 3361.

Kindly mention A FRO MODELLER when replying to advertisers n o February, 1961

V SJ M i V M 7c/.: Har 5958 WEALDSTONE MODEL SHOP 39 THE BRIDGE, WEALDSTONE. MIDDLESEX FULL RANGE OF AIRCRAFT KITS. FLYING SOLID AND PLASTIC. BOATS. CAR S. BALSA. DIESELS, etc. Mail Orders by return

m asHEm a 7 2 07 CO. LTD 2 OBSERVATORY ROAD. TSIMSHATSUI. KOWLOON The most complete stock of aeromodclling and hobby supplies in the far East. Agents for German Groupner, Italian Super Tiger and Sole Agents for OS. engines and radio control equipment.

M& £ S s r Ί ^ ? Ι 1 Te1, Bexley Heatb 4058 CENTRAL AIRCRAFT ROLAND SCOTT GROOMBRIDGE (Sidcup) Ltd. CO., PTY. The Model Specialist 499, Blackfen Road, 5 PRINCES WALK. 147 DERBY STREET SIDCUP, KENT M ELB O U R N E. C.l KEIL KRAFT. YEOMAN. LINDBERG Australia's Main Distributor for: The obvious shop for at! Model Aircraft stocked. Agents for all leading kits, "Aeromodeller", "Model Maker“ and j Requirements engines and accessories. Open six days their Plans Service. per week until 6 p.m.

m Ε Ε Ε Β Ε Η ϋ BOURNEMOUTH.» n a sa Tc,; 27891 DON VALLEY SPORTS WESTBOURNE THE MODEL SHOP MODEL SUPPLIES 24 DONCASTER ROAD 58 MERRION STREET 2 Grand Cinema, Buildings j (Nr. Tower Cinema) BARNSLEY Poole Road, Bournemouth West Model Aircraft — boats — cars — railways, Triang — Trix — Wrenn — Peco IS THE SHOP WITH THE STOCK all makes engines. Every accessory, R/C All plastic and Balsa kits. Why not visit us when in Bournemouth? equipment, same day postal service.

BEArwood 2093 Tel. : 26186 and Central 6819 THE MODEL SHOP EBO BEARWOOD MODELS LEIGH MODEL 8 THREESHIRES 182, Manningham 1Lane, OAK ROAD. BIRMINGHAM 41 (Opp. Belle Vue Sch ool) CENTRE S3 PARADE. BIRMINGHAM I All makes Kits, Engines and Accessories 97 RAILWAY RD.. LEIGH, LANCS. Radio Control sets. Model Racing Cars, Anything supplied. Show us the cash, All Keilkraft and ^Ripmax Products. and we will do the rest. Everything for Planes. Ships and Railways. Call and sec the fabulous Fo rmula "IS2.’ Mail Order. S.A.£. for Lists Agents for “ Graupncr” R/C equipment. Mail Order and Personal Callers. R C Conversions and engine repairs Callers welcomed. Tel: 3592 7c,NO* 5569 MSIMSI*II41« D I M E ) re/- 27088 THE MODEL MECCA PLANET MO!DELS THE MODEL MAKERS & HANDICR AFTS MECCA 204 W itton Road 108 THE HORNIET. Birmingham 6 CHICHESTER, SU SSE X 13 CLASKETGATE (Next Door to Theatre Royal) Aircraft and Boat Kits. All Model Aircraft. Boats, Trains, etc. Engines Accessories, Large stocks o f all Plastic and Flying Kits. "Triang”. " Trix", "Seal extric” tested. 5 and 5A buses pass the door. Engines & Accessories. Scalcxtnc Roadways. Persona! Service Mail Orders Tri-ang and Lone Star electric railways.

Tel: 2524 > 3 iA a K g s E a s i» Tc,-£AS0872 Ι · Ι · Κ ί ί Γ ^ a s m s ® Te'S7£I972 THE PERRYS B. CUTTRISS & : SONS ANGEL 769 ALUM ROCK ROAD. 166 MILE END ROAD MODELS AND HANDIC RAFTS W ARD END L O N D O N . E.l YOUR Modelling needs are here. The Agents for all leading kits, engines, radio 49-51 CLEVELAND STREET enthusiasts' shop run by enthusiasts!! control, model car racing. Advice without Full range of Kits and Accessories. obligation by return postal service. Call and see our Shi>P· Open all day Saturday.

Central S630 BSB EEB » RAO 8627-8-9 RAWCLIFFE’S CALEDON!IA BURLEIGH’S FOR MODELS MODEL CO. 303 EDGWARE ROAD. W.2 38 WHALLEY RANGE Model and Precision En\Cineers 478 Argyle St., C: 2 . THE MODEL MAKERS’ PARADISE MODEL BOAT KITS Our works at your service for engine AIRCRAFT KITS repairs, rebores and re builds BURLEIGH of Edgware Road, Ltd. ENGINES & ACCESSORIES Everything for beginner or.id enthusiast February, 1961 III

Ι Μ Ε Κ Μ Ε Ι T', N0Rlh 4272 E0DBS2> 7e'·65591 ESBSSw Tel: 93 HENRY J. NICHOLLS KEN’S MODEL SHOP GEE DEE LTD LTD. (N. Littlcr) 57 R A I L W A Y S T R E E T . 29 H I G H S T R E E T 308 HO LLO W AY ROAD, N.7 NELSON, LANCASHIRE We stock only the best Advice without obligation — Wc w ill put you on the right track with aircraft, boats All you need in models and toys. for AEROMODELLERS or railways. There's a Model Railway exhibition too.

| T el.: 50273 Tel.: Shirley 5854 Η Η Β Β » re ,ίβ 7707 . B.M.W. MODELS HOWBEL MODELS 161 Kingston Rd., Wim bledon, S.W .I9 GEE DEE LIMITED NEWBOROUGH ROAD, SHIRLEY, SOLIHULL For All Your Modelling Needs. Agents for all leading Kits. Trams, Engines KITS — ENGINES — SPARES, etc. 40 G O O S E G A T E , and Radio Control Why not try us? NOTTINGHAM W e have a "FREE” model advice and All enquiries welcome. S.A.E. for LISTS· instruction class every Thursday 6.30 MAIL ORDLRS BY RETURN Everything for the acromodcller at to 8 o'clock to all purchasers of Kjtl (oil orders under 10/— please include p/p) Nottingham’s leading model shop over 15/- in value.

SOUTH AFRICA Tel: 32452 B m a m Tc,:BAr63,9 mm* BAMBI E. F. RUSS HOWES MODEL SHOP Hobby and Toy Specialists 212 S u n n y s id e G a lle r ie s 97-101 BATTERSEA RISE 9 and 10 BROAD STREET. S.W.II H/V/Cor Esselen & Troye Str. PRETORIA Cars, Planes, Boats and Trains The leading Model Shop in Transvaal. LARGEST STOCK IN THE MIDLANDS A COMPLETE STOCK FOR MODELLERS Specialist in Graupner Products. Mail Order to South Africa. GIVE US A VISIT OR ORDER BY POST * MAIL ORDERS BY RETURN

T el.: H O P 3482 I3GH!R5I3» MODEL AIRCRAFT LE-CORE EIROS. JOHN W. BAGNALL For ALL your model irequirements SUPPLIES LTD. Aircraft — Boats — Car ■s — Railways MODEL CRAFTSMEN'S SUPPLIES 264 T h e B a n k s . H ig ;h S t r e e t SOUTH WALLS (ROAD) ROCHESTER. K e n t 29 Old Kent Road, London, S.E.I and The 100 per cent. Model Shop since 1936 is The oldest established aircraft shop in 373 H ig h S t r *set, well worth a visit. Sales and Service with London. Service with satisfaction C H A T H A M , K.e n t. Satisfaction.

T e l.: 22806 « ο ΐ π ί Μ Ε Ι ul- : VAN™2 5ΤΪΤ353Τ91Ϊ1 J. G. S. CLARKE REDGA1Γ E S STEVENAGE HOBBY SHOP 4 P A R K P L A C E . 46 B R O O K W O O D R O A D , M O O R H E A ID. SO U TH FI ELDS, S.W.I8 STEVENAGE NEW TOWN 1 Full range of all Kits, Accessories, and Leading makes. Boat Kits. Aircraft Kits. The North's Largest M odel D ept. Engines and Accessories.Tri-ang stockists W h a t e v e r th e M o d e l — V YE STOCK IT Engines. If it’s advertised — we have it Mail Order.

rnonc. Ibi+y Tc/ 8tA6,S9 MODEL SUPPLY SHEFFIELD ELE CTRICAL S. H. GRAINGER CALDMORE POST OFFICE, STORES & rINEERS MODEL ENG 108 CALDMORE ROAD 17 BRAZENNOSE STREET. MANCHESTER 2 248 SHALESWOOD. S• H EFFIELD 3 Manchester's Main "Mecca” for every Aircraft — Boats — Engines — Kits — Spare* The "00” Railway Sp eciolists Accessories — M odel Railways — Plastic Kite make of KIT. ENGINE A ACCESSORIES. Also full stock of Boats — /Aircraft — Cars BALSA. RADIO CONTROL EQUIPMENT, etc. Full size Canoes and A ccessones Model Racing Cars

T el.: 22938 1ms&amsa* Te,-: BLA 3972 THE MODEL SHOP BALBIR & CO. H. G. CRAMER LTD. 13 BO OTLE STREET, I72A and B HIGH STREET MANCHESTER 2 III, North Bridgi » R o a d , (Near High Street Station) THE UP-TO-DATE SHOP WITH THE Singapore, lL Four shops in one. COMPREHENSIVE STOCK Leading stockists of M odel Aircraft Model Railway. Model Aircraft, Fishing MAIL ORDERS BY RETURN requirements in Singapore and Malaya. Tackle. Toys. m s m 112 February, 1961

SUPER GL0WPLUG ENGINES ETA "29" Mk. 6 4.7 c.c. £7/1/11 F O X 09 1.6 c.c. £2/5/6 Su per T ig re 2.5 c c. £6/19/6 F O X " I S " 2.47 c.c. £3/5/0 M E R C O 29 „n d 35 £ 5 'lf/6 F O X " 2 9 " X 4.8 c.c. £8/18 5 0 .5 . 29 R .C . 4.7 c.c. £8/3/4 F O X "35·· Com bat Spec. £5/10/2 0 .5 . 29 4.7 c.c. £610/8 G lo w ch ie f 29 and 35 £6/8/9 F U JI "099·· 1.6 c.c. £2/4/9 C O X Babe Bee 0.8 c.c. £2/11/3 McCOY ••29” 4.7 c.c. £4Ί8'6 C O X Peew ee 0.3 c.c. £2/2/6 M c C O Y "35·* 5.7 c.c. £5/16/6 M IC R O N Sup. Sp o rt 5 c.c. £12/3/0

Write for LIST o f over 100 types o f ENGINES Send S.A.E. for LISTS of over 3SO PLASTIC KITS you are going to find the latest JONES BROS, of CHISWICK GRAUPNER models and model — 56 TURNHAM GREEN TERRACE. CHISWICK, W.4 building accessories P h o n e C H I 0858 ( I min. from Turnham Green Station) E s t. 1911 in my ads on this spot.

Of course — this is but a fraction of the exciting and qualitatively out­ standing GRAUPNER line. Numerous BU Y YOUR GLOW MOTORS from well illustrated special leaflets and the kingsized 15 FS model cata­ MODEL AIRCRAFT SUPPLIES LTD. logue with its 212 pages have been prepared to inform you about the Cox Pee We· .3c.c. 42/6 e a c h full program. Your hobby shop as F o x .09 1.5c.c. 45/6 e a c h well as my main agents keep them C o b r a .8c. c. 39/6 e a c h ot your disposal for a cover charge. M c C o y R e d H e a d .19 3.25 c.c. 80/· e a c h BELLAMATIC M e r c o .29 o r .35 5 o r 6 c.c. £5 19 6 e a c h Ind.-No. 3751 The blue,voluminousR C prospectus F5, 6 c.c. £7 12 6 ea ch for example, contains a detailed M e r c o .35 R .C . description of the highly popular self neutralizing multi channel rudder GRAUPNER & STERLING KITS IN STOCK servo BELLAMATIC, indent No. 3751. The 29, OLD KENT ROAD, LONDON, S.E.1. multi-colour prospectus FSP informs Tel. HOP 3482 you about popular high performance model planes and ships, while care­ ful study of the profusely illustrated AM IGO Taifun Start ABC can give you a lot THE MOTOR THAT EVERYONE IS TALKING ABOUT: Ind.-No. 4203 GIG EIFFLAENDER'S of useful hints re. the handling of C O M P A C T your model engine. You’ll find all R O B U S T data concerning the technically P O W E R F U L P.A.W. 1-49 ECONOMICAL fully developed 3-and 10-channel P R O D U C IN G .176 B .H .P . at 17.000 R .P.M . R.C sets in the special prospectus 3K This ii the Hand-Built "SPECIAL*· Engine which leave» other engine· or 10 K, respectively. standing, ye t costs only 86/- post free. i t TOP DIESEL IN THE 1959 & I960 GOLD Last not least — the kingsized 15 FS T R O P H Y * but also the best beginners engine to-day, exceptionally easy starting, GRAUPNER modelbuilding catalogue, and virtually indestructible. featuring the Cessna 180 and the Manufacturer· & Distributors: SILVER-ARROW Mayflower on its cover, contains Progress Aero Works, Chester Road, Macclesfield, Ches. Ind.-No. 2083 virtually everything the GRAUPNER Distributore: line has to offer! Your local hobby E. Keil & Co. Ltd., Keilkraft Works, W ick Lane, Wickford, shop will be glad tho show it to youl Essex. Normal Trade Discounts: Enquiries invited.

Agents ail over the world: CATALOGUE Great Britain: A. A. Hales GLASS FIBRE 26 Station Close No addition to December advertisement. Potters Bor, Middlossox Australia: tden Distributors rfy. Ltd. ALUMINIUM ALLOY ENGINE PANS 226 Pitt Street Class *A: E.D. Super Fury; P.A.W. 13/- Sydney, N. S. W. Class FAI: Oliver; Rivers: ETA I5D 15/- British Petambar Dindoya! with or without air scoops Guiana: 104 Regent Street Georgetown Class B: ETA 29 15/- New Burton Broilsford Agencies Speed Pans E.D. Super Fury, P.A.W. ΙΓ length 15- Zealand 261 Willis Street All prices include postage. C.O.D. 2/- extra , C. 2 South Phil do Bruyn SWEDISH MAGNESIUM ELECTRON PANS Africa 4 Pritchard Centro The first consignment will arrive February, price approxi­ 85 Pritchard Street P. O. Box 469 r 1 1 mately 22/-. Order now to be first in the field. Johannesburg c 1 Send no money now — I will advise prices later or forward C.O.D. DENNIS V. NIXON JOHANNES GRAUPNER · KIRCHHEIM-TECK · GERMANY REINFORCED PLASTICS 10 Wood Street. Hinckley. Leicestershire. All Item· told trough recognised dealer· only Telephone: Hircklcy 2776

Kindly mention AERO MODELLER when replying to avdertisers 8 lrno Ra. afr. et. ulse b te ru Pes t. 81 Tml Aeu. odn EC4 t wo al rd eqiis should enquiries trade all whom to E.C.4. London. Avenue. Temple 8-10 Ltd.. Press Argus the by Published Herts. Watford. Road. Clarendon 38 Made and printed in Great Britain by the Croydon Times Ltd.. 104 High Street. Croydon, for the Proprietors. The Model Aeronautical Press Ltd., Ltd., Press Aeronautical Model The Proprietors. the for Croydon, Street. High 104 Ltd.. Times Croydon the by Britain Great in printed and Made $€€ THEM A T YOUR. LOCAL MOOCLSHOP LOCALYOUR. T A THEM $€€ l hbat realism” in appearance inand realism” hbat |ily detailed, accurate scale model,

. pn -0 LIG TIGER FLYING P-40 spanI. i lsi cnp wt gunsight. with canopy plastic SUPER BEE E B R E P U 4 S X O C n fyn crl te ags patc ready-to-fly model plastic largest the circle flying any opeey e a pcaua MNSZD ready-to-fly MAN-SIZED spectacular plane,perfectly a scaled, 2.5powerful with c.c. engine.BIG in new Completely vr rdcd Pie £16 5 8 Price produced. ever ! D E R E W O P Price •5*1*1·;·; £6711 e drse. eitrd t h GPO fr rnmsin y aain aaie Post. Magazine Canadian by transmission for G.P.O. the at Registered addressed. be ALSO G 2i. pn COMANCHE 32-in. span Thimble-Drome C O X‘S P O R T S M A N 'P O W E R E D ! / aos thr zamous OW- ORPWEE. RAYΤΟ-FLY! Ο . READY-Τ ERED. POW R TO O -M W LO all-plastic lt fr 1961. for ility b a Cox Thimblc-Dromc motors are also also . are . . ance perform motors TOP separately. available Thimblc-Dromc Cox 09 pc Hpe 74/6. Hopper 52/3 Bee Space .049 Golden .049 42/6; , e e W Pee .020 INSTANT starting . . . IMPROVED depend- depend- IMPROVED . . . starting INSTANT .048 Baby Bee. 42/6; .IS O lym pic 134/11; 134/11; pic lym O .IS 42/6; Bee. Baby .048 S R O T O M W O L G X O C *

uhu h world the oughout scale control line me line control scale li. pn -0 SPR SABRE SUPER F-100 span ll-in. nt lutae. Spr, rfbiae kit. prefabricated Superb, illustrated.) (not ra te on brir Official barrier. sound the break Sleek scalemodel of the firstplaneto .... akns Pie £470 Price markings. U.S.A.F. 4 CURTISS24 PUSHER X O C 4PEE E E W ΨΓ* — •V.v.w.v.v

’ es AVAIABE N BRI N! IN A IT R B IN BLE ILA A V A W O N - dels h Cx ag fTibeDoe powered, Thimble-Drome of range Cox the £5,15/9 ! D E R E W O P 6 TTO COE PTES A, MIDX BAR, POTTERS CLOSE. STATION 26 A. A. LTDHALES lw moo, prng tre, l propeller, n ylo n with E T E L starter, P M O g C rin sp is odel m otor, e m m ro -D le b im glow h T ch a E onrl ie ade d n a handle line ntrol co h moes o hv be waii for! r o f g itin a w been have you odels m the eehn: otr Bar a B Potters Telephone: ih ul-n tblt ad uaiiy for durability and stability built-in with Civil AirPatrol searchplane— andrescue einr! odru vle at value Wonderful beginners! hlsl ol. Sole only. Wholesale a I tanr n uhni colours authentic in trainer II War n mrig. da frfih training. flight Ideal markings. for and World famous the of model Scale 7-n span I7i-in. UE CUB SUPER ’ STINKER” I’L L “ 10-in. span E E W E E 4 P X O C ol’ sals engine-powered smallest World’s rc £52 6 Price flyer. stunt tough a but biplane, BIPLANE PT-19 © *

agent agent lns Just lines. ’ n o r c a D o Britain for ' 2226 rc £6Price 2/9 ! D E R E W O P £4/18/9

CHAMPION^

DESIGNED FOR DURABILITY, PERFORMANCE AND GOOD LOOKS! Designed for durability as well as easy handling, Keilkraft models continue to prove themselves all­ round champions in every field. Careful selection of materials ensures success in the building and flying of every Keilkraft kit. CAPRICE 51' span contest glider with an out­ standing performance. 15/S GAUCHO 44' span free flight contest model.

42' span free flight sport and PAA-LOAD model for .5 to 1.5 c.c. engines. 19/9 A brilliant design for motors from I to 1.5 c.c. 2116 T IG ER M OTH 28' span rubber powered F/S. Kit contains pre-formed metal U/C. 19/4 THESE KITS CONTAIN DIE-CUT PARTS FOR EASY, ACCURATE Stunt Expert BRIAN HORROCKS — w ho use K.K. RECORD BUILDING, METHANEX in his Glo-Chief MARQUIS 49-powered stunt model to win AMPLE MATERIALS, the GOLD TROPHY at the 30' span stunt model with 1959 BRITISH NATIONALS, says: tricycle U/C. 32/6 FULL SIZE PLAN, "I find it gives the flexibility m i W r necessary to cope with all sorts of RECORD Κ/.1ΙΛΙΛ - ' PLUS BUILDING manoeuvret without any tpeeial DIESEL FUEL tank arrangements. That is VtsEcWSSj AND FLYING the reason for my choice of INSTRUCTIONS METHANEX."

Follow the experts SEE THEM AT YOUR NEAREST MODEL SHOP and use K K fuels l

FIREFLY „ TRADE •enquiries 20' span stunt model for ONLY engines under I c.c. 15/9 THE GREATEST NAME IN MODEL KITS