M A Y I9S8 The W orld’s smallest production S o r e — .218' Price £3 . 5 . 0 diesel engine. This has been deve­ S t r o k e — .250- loped for the experienced Modeller C a p a c it y — .15 c.c. — .00? cu. ins. P. Tax 12. 6 and is ideal for small scale models. Weight— i or. Com plete with metal propeller blank. P r o p e lle r — 4$ d ia . Total £3 . 17 . 6

. ■ B o r e — .350- Undisputed champion of the ‘point Stroke— .350' fives’, it is built like a watch and C a p a c it y — .5 c.c. — .03 cu. in. j l DAR has a performance that would not W eight— 1± ozs. disgrace many larger engines. Propeller— C/L 6" x 4 — F F V x 4 “

For those with a tight budget this B o r e — .375- S t r o k e — .420- is the ideal engine. All the virtues Price £1 . 16 . 9 C a p a c it y — .76 c.c. of the Super Merlin, but without the — .46 cu. ins. P. Tax 7 . 1 W eight— li ozs. extra fittings. Positive lock needle Propeller— C/L 6*x6 v a lv e . — F /F V X 4- Total £2 . 3 . 10

B o r e — .375- Performance is as good as it looks, Stroke— .420' C a p a c it y — .76 c.c. and it really is easy to start and SUPER — .046 cu. ins. operate. Complete with propeller, W eight— IJ ozs. Propeller— C/L 6' x 6 spinner and tommy bar. 12 Im^^/HERII/If — F /F V x 4'

B o r e — .425 The perfect engine for the beginner. S t r o k e — .420 Combines easy starting, flexibility Capacity— I c.c. Price £2 . 4 . m m s p it f ir e and long life with sparkling perfor­ — .06 cu. ins. mance. A limit stop ensures that W e i g h t — 3 o z s. P. Tax 8 . 6 Propeller— C/L 7" x ' the com pression setting can be found -F F 8" x 4 Total £2 . 12 . 7 without difficulty.

This powerful m otor is ideal for the B o r e — .525 Stroke— .420- sm aller radio control model as well as C a p a c it y — 1.49 c.c. free-flight and control line. Com plete — .09 cu. ins. W eight— 3^ ozs. SABRE with propeller, spinner, tommy bar Propeller— C/L 7" x 6 an·! plastic fuel tank. — F ;F 8 ' X 4

A high performance engine with B o r e — .580 twin ball races, downdraught car­ Stroke— .575" Price £3 . 7 . 0 Capacity— 2.49 c.c. burettor and rear rotary valve. — .15 cu. ins. P. Tax 12 . II ■j RAPIER Provision for a two-speed fitting or W e i g h t — 5| o z s. choke assembly makes it ideal for Propeller— C/L 9" x 6 Total £3.19.11 . M i} contest work and radio control. — F F 9' x 4-

A powerful, rugged motor suitable B o r e — .687' S t r o k e — .562 Price £3 . S . 0 for the larger model especially for C a p a c it y — 1.5 c.c. radio control work. Complete with — .21 cu. ins. P. Tax 12 . 6 ψ MANXMAN W eight— 5} ozs. spinner, tommy bar. and integral Propeller— C/L 9‘ x 8" plastic tank. — F /F I0~ x 6 Total £3 . 17 . 6

Engineered to last a DAVIES CHARLTON LTD. modelling lifetime by h il l ’s m e a d o w s d o u g l a s , is l e of m a n May, 1958 225 ISSBOMD

One of a series of articles written by John Paterson, Managing Director of Solarbo Ltd.

After all my talk about Balsa trees, I thought it would be more complete if readers could see a section of a Balsa tree, so I have specially imported some logs from Ecuador and by the time this goes to print most of our Accredited Dealers should have a section of these logs to show you. photo B If you will look at the photograph taken of a pile of these logs you will notice the very great variation in shape and size. If you look carefully you will be able to see the pith heart of the tree and how it put in my office. You can judge from the gap varies in position in the different logs. between the steel strapping and the wood just how In the other two pictures, I have drawn in ink much it has shrunk and you will also see what big the growth rings on a section of a Balsa log and also cracks can occur. indicated on photo B, by dotted lines, the kind of You can also realise why it is necessary to cut planks of wood that might be cut from a tree like relatively small pieces of Balsawood when the logs this. are sawn, otherwise they would just split in the I have deliberately chosen a log with the pith drying process. core, which is the growth centre of the tree, very much to one side. You will notice how year by year You will, no doubt, wonder why this particular the tree has put on much more wood on one side tree has grown so lop-sided. I cannot, of course, give than the other and, as you would expect, the wood an exact reason, but it would probably' be because it on this side is much lighter than on the other. had a more effective root run on one side than the You will, therefore, see that pieces of lumber cut other. It might have been a tree on the edge of a from this tree must have a great variation in the clump with less competition on one side than the density of the wood, both in the different pieces other, or there might have been a big rock on the and from side to side of the individual piece. side which has grown less. The reason I have shown two pictures of this The feed system of a tree, that is from root to section of a log is so that you can see how a log branches, is relatively localised in a vertical plane. splits as it dries and why, therefore, we cannot If you put a dye by the roots on one side of a tree it import Balsawood in log form. Photo B was taken will colour the branches immediately above it. If you twelve days after photo A. ring-bark a tree, leaving a gap on one side, the The section had been cut off a log which was still branches on that side will continue growing whilst green and banded tightly with steel strapping and the others die.

THE BEST BALSA YOU CAN BUY COMES FROM

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Kindly mention AEROM ODELLER when replying to advertisers m OBMB 226 May, 1958

L i i

A Rubber Duration Tubular Stick Model capable of outstanding flight performances. Designed to withstand hard handling. The kit contains many ready-made and stamped-out parts, including READY-HOLLOWED BALSA FUSE­ LAGE- DIE-CUT RIBS, HAND-CARVED BALSA P R O P E L L E R , and with an easy to follow step-by-step instruction leaflet, the " N IM R O D " is quickly assembled W ing span 28 in.

K IT P R IC E 18/9 (IncludingjTax)

Over 100 other VERO N construction kits available from 14 different ranges including: TRU-FLITES - CONTROL-LINE SOLIDS - POWER DURATION GLIDERS - ‘QUICKIES’ (Rubber POLICE LAUNCH and Jetex) also a wide selection of DIESEL & ELECTRIC MOTOR LAUNCHES, TUGS & COASTERS, YACHTS & HYDROPLANES Sole Distributors of the famous ‘TAYCOL’ Electric Motors and a complete range of Flight and FUEL Marine accessories TANKS -SORBO' RUBBER WHEELS

Ask your dealer for FREE Illustrated "V E R O N " Pocket Folder or send to us.

o M O D E L A I R C RAF T (Boumemouth)LTD. NORWOOD PLACE · BOURNEMOUTH · HANTS Telephone: SOUTHBOURNE 43061 -WHOLESALE ONLY

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kits... accessories

A.A.HALES l t d FLYING RADIO CONTROL UNITS SCALE P A T H F I N D E R receiver £5.19.6 High stability single-valve circuit, giving reliable operation over a wide range of battery voltages and operating conditions. A current change of SO EASY TO ASSEMBLE! 3.5 to 4 milliamps ensures faultless relay operation. A sealed unit with simple tuning PRE-FABRICATED, PRE-DECORATED! controls— tested by your local dealer and fully EVERY ONE A FLYER! guaranteed. O nly V u

AERONCA SEDAN PACER S&fr PUSS MOTH Sk-AUSTER ' ^ + m D D Q G PATHEINDER transmitter £4.19.6 High overall efficiency radiating adequate NEW MODELS COMING IN THIS SERIES! power for all normal requirements. The rugged - steel case is finished in stove-enamelled grey m y ' / t c COLOUR c o d ed / "hammertone". Economy and signalling push­ TANKS buttons conveniently located for easy operation. Lightweight aerial. Tested by your local dealer and fully guaranteed.

Turquoise (llxlixi) Maroon (7 *5 c.c.) Blue ( U x 11x2) Brown (14*5 c.c.) Red (lj x 1 j x S) Grey (29-8 c.c.) Yellow (2J x 1J x 5) Green (21 x 2 x 5) INSIGNIA

Dress up that model M A C T U A T O R .... 23/10 the easy way — with R ip M a x insignia! The Yeoman Lightweight, self-centering, rubber driven range caters I nr all sizes of models. Scale escapement. Weight loz., operating volts 3-4 markings arc fully The perfect complement to Pathfinder authentic. radio for simple single-channel aircraft Flying Scale: 72nd Scale: control. A rugged, lightweight actuator, AAH 1. R.A.F. ... i AAH 5. R.A.F. ... 4d. for i or rubber power. Coil resistance AM I 2. U.S.A. ... i AAH 6. U.S.A. ... 4d. AAH 3. German ... f AAH 7. German ... 4d. 9 ohms. Current consumption (typical) AAH 4. Russian/Polish f AAH 8. Russian/Polish 4d. less than half an amp. Every M A C T U A ­ Roundel Sheets: Alphabet Sheets: TO R tested before despatch and fully AAH 9. 2 in. dia. ... ' 2 in. ... 3d. U in. 1/3 guaranteed. AAH 10. 3 in. dia. ... 6d. AAH 11. 4 in. dia. ... i> 8» 4» I and 1 in. AAH 13. Super I·/S ... Union Jacks: Solid Colours (11 x 1$ in.): AAH 16. 1 in. each l£d. R ifiM a x RADIO CONTROL EQUIPMENT Yellow, red, blue, white AAH 15. 2 in. „ 3d. and black ... each < AAH 14. 4 in. „ 4*d. Fully guaranteed— the natural choice of experts and Checkerboards (7$ x 54 in.) International Markings: beginners. Your Local Dealer will be pleased to Five varieties ... each f AAH 17. (5 countries) 2/- demonstrate it to you— call in and ask him. li kits... accessories Write for FREE Radio Leaflet YEOJHAN A.A.HALES l t d 39 PARKWAY, LONDON, N.W.I R iw p . M a x HMUrACTOttM 60 STATION ROAD. NEW SOUTHGATE. LONDON. N.ll mORIHE PCCESSORIES ACCI”°*,IS

Kindly mention AEROM ODELLER when replying to advertisers 228 May, 1958

wempokt anym \m frnsr selectedbalsa AFRICA HOUSE · KINGSWAY wood ro a m model LONDON W.C.2. MMUfACTV&NG TRADE TELEPHONE · HOLBORN 7053 TELEGRAMS · BALSAWUD LONDON

crash-proof Clipper New, rcady-to-fly, rubber-powered. Modern, trim, fast and crash­ proof. Length 8J in. Span 10 in. Fully-shaped all-plastic fuselage; paddlc-bladed propeller; knock-off main planes and tail-plane o f finest balsa. Complete with full instructions, price 5s. 3d. inc. P.T.

A WIMCO PRODUCT OF SEBEL PRODUCTS LTD., “J” DIVISION, 177 W est Street, Erith, Kent. Telephone: Erith 3020 Grams:

Kindly mention AEROM ODELLER when replying to advertisers May, 1958 229 m m m MODEL AERO ENGINE

Novices need it! As essential to every new oero engine operator as fuel in the tank l

• Control Line Fans whether Stunt, Combat, Team Race or Speed addicts will find fascinat­ r % ing facts on fuels, tuning, tanks, tricks of the trade in its pages. • Power Duration Types must not let o It out of tight— expert advice on their particular angle plus lots of exclusive gen on comparative r.p.m. checks make it a must.

• R/C Operators will devour its speed control O advice and learn enough about their engines to have time to get the radio side really under control. CHAPTERS ON ♦ . . TYPES OF ENGINE : MANUFACTURING • Engine Builders will lap up the nine FITS & TOLERANCES : BORE & STROKE chapters on engine building and accessories and cannot > COMPRESSION RATIO : CARBURETTION fail to profit from Fred Carter's, Pete Buskell's and COOUNG : TUNING FOR SPEED TUNING FOR FREE FLIGHT : HORSE Dave Sugden s words of wisdom. m POWER & TORQUE : TEST APPARATUS OPERATING A FIRST DfESEL : FUEL • Sport Fliers who want to really enfoy their TANKS & FUEL FEEDS : SILENCERS hobby can leave all the heodaches at home when they σ OPERATING GLOW PLUG ENGINES have digested these invaluable 208 pages. OPERATING SPARK IGNITION ENGINES ENGINE SPEED CONTROLS : FUELS CHOOSING THE RIGHT PROPELLER • Jet Hen will relish the details of how to make a EQUIPMENT & ITS INFLUENCE ON 22-in. Brauner pulse jet. > DESIGN : MATERIALS PATTERN MAKING & CASTING : TOOLS & PROCESSES IN THE LATHE : LOOKING AFTER THE O SPEAK of this latest MAP book as the most significant event for power LATHE : WORK ON THE COMPONENTS Tmodellers since the Brown Junior was invented is about the least we can ASSEMBLY & TEST : MAKING THE say for it. Its 75,000 words and over 300 illustrations could only have been SUGDEN SPECIAL : MAKING A PULSE produced by the grand team whose work is gratefully acknowledged, and the ET : A HOME BUILT REV COUNTER wealth of their wisdom has been carefully edited and arranged with additional APPENDICES on Engine Installation. ·8 c.c. engines. Design Data. 2-5 c.c. engines. matter by our own Ron Moulton, who enjoys unrivalled opportunities to try the “Engine Review" Test Figures, Torque best of the world’s model products. There is no member of our aeromodelling Absorption Data, W orlds M odd Engines. community who will not benefit from reading this new work, which contains Engine Analysis Summary etc. in book form so much of the power gen that has appeared in article form in 208 pages size 8 i by 5$ in., cloth bound, with past “Aeromodellers” with the addition of every useful fact on aero engines three colour dust jacket, needed to complete the picture. over 300 sketches, photos, data tables. (Post Free Price I3j6) I enclose PO/chcquc value 13/6 for NOW ON SALE! MODEL AERO ENGINE ENCYCLOPAEDIA. at your local Model Shop NAME

or Bookseller ADDRESS

SPRING BO O K LIST is also ready and will be sent FREE if scamped addressed envelope marked BO O K LIST is sent to address below.

Model Aeronautical Press Ltd. 38 Clarendon Rd. Watford

Kindly mention AEROM ODELLER when replying to tdverlisers From: Air

AIR MINISTRY (AM 16), ADASTRAL HOUSE, THEOBALDS ROAD, LONDON. WCI Dear Sir, Suggesting a career is always a big responsibility—not least for parents with a son growing up. In the final analysis, the choice must lie with your son himself. But you can help him in his ehoice. Here, therefore, are some facts about one career which is particularly attractive to an ambitious young man. I refer to a flying career in the Royal Air Force, about whioh there seems to be some misconceptions at present. First, let me assure you that flying will continue in the Royal Air Force for as far ahead as can be foreseen. The Royal Air· Force has the prime responsibility ' - for the air defence of this country. For young men therefore who are trained to tackle the problems of the air in the air, there will be more—not fewer— opportunities in the missile age. This is especially true of those who qualify now for a permanent or short service commission and come successfully through their Pilot’s, Navigator’s or Air Electronics Officer’s training. In a service as complex and as forward-looking as the Royal Air Force, there is always a constant demand for the right kind of senior officers. The new increases in pay and allowances effective from the 5th April mean that a Flight Lieutenant of 25 can, with full allowances, earn more than £1,500 a year. It is a job of high responsibility. Quite apart from flying and its fascinating skills, there are the manifold duties of an officer; to men under him; in staff, liaison or training jobs; and, perhaps, in high command. You know yourself if your son has the character, intelligence and fitness for this magnificent (but exacting) life. If he is over 17i and has G.C.E. or equivalent to the required standard, you may be doing him a service if you write to the Air Ministry for fuller information. Let me add that the country needs the right kind of young men for this vitally important job, and it needs them now. Yours faithfully,

To any young man who wants to fly... For further information write, statinq aqe and educational qualifications to : Air Ministry (AM18), Adastral House, London, WCI usatuiaa 232 May, 1958

BRIT A INS FINEST FLYING MODELS

V For ten years the Mercury IB W b^ M Trademark has stood <■ W for all that is best in Model Aircraft. Our flying « H r model kits enjoy a world-wide reputation of which we are justifiably ^ ? 5 ^ . proud; and whether they are control-line, free flight power and scale, or just beginners’ models for the junior modeller, they set a standard for quality of design and materials that is unsurpassed. j f k Ask your local Mercury stockist to see the contents o f a Mercury kit. You will find only the best o f Solarbo balsa, carefully selected and accurately shaped or printed. The Plans are clear and together with the concise yet compre- " V hensivc building instructions make the successful completion o f the model as easy as it is possible to make it. Remember too that the Mercury ^ range of kits is progressive from the simplest of gliders to a radio-con- ΪΜΤ trolled scale model or a high- / performance control-line J stunt or combat plane. ^ Choose MERCURY— Britain’s Finest Flying Models W

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Kindly mention AEROM ODELLER when replying to advertisers Our thanks are due ...... to the many readers who sent completed Readers’ Survey VOLUME X X I 1 I Forms from the March issue, in particular those sufficiently NUMBER 268 interested to write accompanying letters. Although it will be some MAY 1 9 S 8 time hefore the momentous task of categorising the information has been completed we emphasise that each and every one of the accompanying letters has been read. Our only regret is that time Managing Editor * - C. S. RUSHBROOKE docs not permit individual answers, and trust that the readers Editor - H. G. HUNDLEBY concerned will look upon these few words as a hearty appreciation Assistant Editor R. G. MOULTON of their interest. It was invigorating to read the constructive suggestions and forthright comments expressed on the contents of the magazine. ★ Particularly praiseworthy was the unbiased attitude of so many correspondents, who did not allow their own particular interests to prevent them commenting favourably on features catering for other aspects of the hobby. Special features One or two contest fliers for instance, mentioned that they enjoyed the old-time flying stories and appreciated “your magnifi­ THE RACING COMETS ...... 236 cent scale drawings”. In this latter respect George Cox received *'DE HAVILLAND COMET” ...... 238 many bouquets, and taking the risk of singling out a particular INDOOR NATIONALS...... 240 contributor, we do feel that George has done a terrific job. KOPECK Y’S INDOOR RECORD HOLDER 249 Certainly his drawings set a standard of aeronautical draughtsman­ ship unequalled for quantity as well as quality of detail, and have RADIO CONTROL AT CHALGROVE ... 243 a reputation now internationally established. CASCADE SYSTEMS FOR RADIO CONTROI...... 244 Another opinion, to which we have given some thought, expressed the wish that we should cater not only for popular taste, “SIESTA” ...... 248 but also educate our readers by publishing more technical articles “ROARING 20” ...... 256 on the aerodynamic aspects of model Hying. The recent article by LOSENGK CAMOUFLAGE ...... 260 Ilanshciri Thomann on A/2 design being singled out as a good example. One young reader enclosed with his form a plaintive note ★ requesting vve should find he and his schoolmates a flying field, enclosing a list of local bus routes so that we could lay on one suitable for public transport! As much as we would like to help we Regular features trust he will realise that this type of service is outside our scope, and best dealt with by the S.M.A.E. who we arc sure will be HANGAR DOORS ...... 234 pleased to put him in touch with his nearest club. AIRCRAFT IN SERVICE—English Electric Λ number of letters came from people describing themselves as Canberra B(I)8 250 “armchair modellers” who wrote expressing their gratitude to WORLD N E W S ...... 260 A eromodeller for keeping them in touch with the hobby, now AIRCRAFT DESCRIBED—Albatros C III 258 that for one reason or another they were unable to actively WHAT’S THE ANSWER? ...... 260 participate. We only hope that continual study of our pages will DECOR DETAIL ...... 262 eventually lure them back to the building board. TRADE NOTES ...... 263 Sputniks were not appreciated, and it would appear that “A /M ” ENGINE ANALYSIS—Fox 29R and X .264 readers prefer their humour, not in the form of flying gimmicks, MODEL N E W S ...... 268 hut in the more fleshlike guise of maestro McGillicuddy. It seems, MOTOR M A R T ...... 270 that of all those who have come and gone from our pages, he is the most missed character. Providing certain delicate negotiations can CLUB NEWS 271 be concluded satisfactorily, and here the maestro has mentioned the penurious state of Auchengargle Club fluids and other sundry items of expense such as complimentary supplies of haggis at ★ Hogmanay, then his return can he assured. One reader took us to task for not including in the Survey the question “Which section of A eromodeller do you read first?” and then goes on to say that he turns straight to the classified advertisements. This, it can be imagined, has caused strained AEROMODELLlvR Incorporates rhe MODEL relations between the Editor and the Advertisement Manager. AEROPLANE CONSTRUCTOR and is published monthly on the 15th of the previous month by the In more serious vein we mention that all of the letters received Proprietors: confirm our long-held view that Aeromodeller is fortunate in MODEL AERONAUTICAL PRESS LIMITED enjoying a live and intelligent readership of which we are justly SUBSCRIPTION RATE: (Inland) 23/-,(Overseas) 22/- proud. We value your opinions, and for this reason hope that many oer annum prepaid (including the special Christmas Number. more readers will be sending in a completed Survey Form before the closing date of April 30th. Plank forms are still available for Editorial and Advertisement Oflices: 38 CLARENDON ROAD, WATFORD. HERTS those who need them and the “Popularity Pick” contest with its T klkphonk: GADKUROOK 2351 (Monday-Friday £25 cash prize is open until the same date. S0SQ&B5) 234 May, 1958 littcadrille Lal'iiyclle Vintage aircraft enthusiasts will prick up their ears when they see this famous squadron name from the 1914-18 war. We certainly did when we heard that a film of this squadron was on its way, but having seen the film in question feel that its present title “Hell Bent for Glory” is far more in keeping with the script. The only thing that baffles us is how the Director, William Wellman, who won a Croix de Guerre with the original Escadrille Lafayette ever came to make such a picture. To compensate for the some­ what dreary plot there are, how­ ever, one or two excellent flying scenes, and Macpherson Robertson, to buy what he considered although history lias been stretched by the inclusion the very best machine. He chose a low-wing of Steannan trainers and Nicuport 28’s in combat Lockheed Altair, and in May *34 tested it as the scenes, the air to air cinematography is good. We A n za c in California. It was shipped to Australia, particularly liked the many excellent shots of and re-christened Lady Southern Cross before BleriotS being used for pilot training one of which establishing itself as the fastest and most efficient is shown right. Just distinguishable in the back­ aircraft in the Southern Hemisphere by making ground are Bleriot “Penguin” trainers, a SPAD, a many record flights across the Australian Continent. Fokker D VII, the Nieuport 28 mentioned before, But Sir Charles left his departure for England and a Camel. rather late, and a fractured cowling prevented him from leaving for Singapore on what was to be his Cover Stary first leg of a record flight to Mildenhall. Desperately lost, twelve hours out non-stop from Bitterly disappointed at missing the opportunity Mildenhall, Charles Scott and Tom Campbell- to compete after six months of concentrated pre­ Black had almost given up every hope of being able paration, and much criticised in the Australian to continue beyond the first stage of the great press, he became the Nation’s whipping boy and MacRobertson England/Australia Air Race in sought any means of justifying his choice of ’plane. October, 1934, when they descended through dense When the MacRobertson race was on, “Smithy” cloud to find a welcome oasis in the midst of utter and Capt. Taylor left for California in the Altair to desolation. Their haven was the R.A.F. emergency make a reverse journey of his Southern Cross epic, aerodrome at Kirkuk, and once safely down, they crossing the 7,000 miles of Pacific in three stages, took on twenty gallons of precious petrol and a magnificent achievement that was somewhat over­ refreshed anew, flew on to Baghdad. shadowed by the race news. The dramatic moment of take-off is captured by Unable to sell the Altair again in the U.S.A., cover artist Laurie Bagley as the graceful D.H.88 “Smithy” shipped it to England and attempted to Comet leaves the dusty landing ground. The full break Scott and Black’s record flight to Australia. story of the Comets and this great race together Within days the world was to mourn the passing with a flying replica will be found on pages 236 of this great aviator, for the fated Lady Soutltem and 238. Cross was lost for ever in the Burmese jungle. MissiiiK :\ a me Engine know-how There is one name missing from our story of the 208 pages of gen for all model engine enthusiasts, racing Comets on the following pages—that of the including all the notable features published in late Sir Charles Kingsford-Smith, the Australian Akromodeu.er on making your own racing 2-5 c.c, hero of so many record flights in the Fokker F. VII diesel, pulse jet, revolution indicator, fuel blending, 3m “Southern Cross” detailed as a scale model in etc., etc., plus invaluable tabulated data on British our March issue. “Smithy” set his heart on winning and American engine tests, will make the “Model the England-Australia race, and as soon as de Aero Engine Encyclopaedia” indispensable for every Havillands announced the projected Comet, he practising acromodellcr. Beginners are given in­ booked an order and asked for construction and structive introduction to the diesel, glowplug or performance specifications. petrol engine, experts can draw on its wealth of All that D.H.s would guarantee was a cruising comparative data and sketches ranging from torque speed in excess of 200 m.p.h., and that was not absorption curves to the chicken-hopper tank. For enough for .Smithy, who laid enough money from 12s. 6d. this handsomely bound volume provides a National Fund, and personal backing of Sir a complete reference work on model aero engines. May, 1958 235 SBatLiaa

O b itu a ry The aeromodelling movement, and m particular the North Western Area, lost a stalwart enthusiast on February 16th, 1958, with the passing of Mr. Donald Salloway. This 54-year-old Lancashire lad was noted for his outspokenness, and was for many years a leading light in the North Country, where his guidance as Area auditor provided a financial position that is envied throughout the S.M.A.E. Don first became known in the aeromodelling fraternity about 1944, and was a very keen partici­ pant in the affairs of the original “Northern Area”, later sub-divided geographically into the present Areas. He was at that time associated with the aeromodelling activities of the Rochdale A.T.C., and played a major part in organising the first post­ war Northern Rally at Springfield Park. At various times Don was Press Sec., Comp. Sec., Area Delegate, and Auditor, the last two positions being held by him for die past eight or nine years. Above the late Den Sallaicay, known affectionately to his fellow Don carried on his business of timber merchant modellers o f the contest Jicld as “Sally” and manufacturer in Rochdale, and was very well known to aeromodellers through his activities both have made it by eye instead of by design. Why? on the field and in Council. We shall miss his breezy A sheeted leading edge—especially on the upper personality and unmistakable figure, and tender our surface can make all the difference to a weighty sincere sympathies to his family. model particularly for radio control, one need only go to the maximum camber point, for beyond that, Ixlidiiijg' holidays it is common aerodynamic practice today to continue the airfoil in straight lines to the T.E. Incidentally A gliding club offering holiday courses, and not included in our survey last month is that at Detling, a blunt trailing edge makes no difference to any near Maidstone. Ideally situated for London area model where duration is not the aim, so why not keep it thick and warp resistant? and people in the South-East, the Kent Gliding One airfoil which is most popular with American Club has a number of practising aeromodellers Radio Control designers, e.g. Smog Hog, Astro- among its members, notably the inventive George Hog, Breezy Sr. Ascender, is the 2400 series, either Court, responsible for some of the first ever model 15 or 12 per cent, thick. Ordinates are as follows: diesel engines, and radio controller Charlie Dance. Courses are open for beginners in June and September. N A C A 2412 N A C A 2415 iSword-holdini; indoor design Upper Lower Upper Lower Surface Surface Surface Surface The one-third fullsize plan on page 242 of this Station Ordinate Ordinate Station Ordinate Ordinate issue represents the very latest development in 0 0 0 0 microfilm covered indoor model design. Ernest 1-25 215 —1-65 1*25 2-71 —206 Kopecky of New Jersey, U.S.A., is the designer, 2-5 2-99 —2-27 2-5 3-71 - 2-86 and on June 29th last he flew it for the very high 50 4-13 —3-01 5-0 5*07 —3-84 7-5 4-96 —3-46 7-5 606 —4*47 time of 33 minutes 9-4 seconds to break the U.S. 10 5-63 —3-75 10 6-83 - 4-90 Class D record. The model was test flown on 1,000 15 6-61 —4-10 IS 7-97 —5*42 20 7-26 —4*23 20 8-70 —5-66 turns, calling for no adjustments, and then onl,800 25 7-67 —4*22 25 917 - 5-70 turns it made a 261-minute flight. Next time, 2,400 30 7-88 —412 30 9*38 —5-62 40 7-80 —3*80 40 9-25 —5-25 turns were piled on and it climbed rapidly to the 50 7-24 —3*34 50 8-57 - 4-67 60 6-36 —2*76 60 7-50 —3-90 top of the 192-ft. hangar in about 5 J minutes, then 70 5-18 —2*14 70 610 —305 began the long cruise down after levelling off. The 80 3-75 —1-50 80 4-4! —2-15 90 208 —0-82 90 2*45 —M 7 motor was completely unwound for a “deadstick” 95 1-14 —CMS 95 1-34 —©•68 landing at 30 minutes, then came the record. 100 ( -] ) (- 0-13) 100 (016) (—0 16) 100 0 3 0 100 0 IMe flic tving! L.E. Radius: 1*58 L.E. radius: 2-48 We were looking at a couple of radio models the other day, wondering how the 16 oz./sq. ft. loaded wings could possibly cope with the situation. Covering sag reduced an already thin section to about 8 per cent, and the camber over the vital first 30 per cent, chord was so far distant from the desired section that the builder might just as well In the early months of 1933 that great penditure on a projeot that would have to types. With so many new ideas in one new Australian philanthropist Sir Macpheraon be completed in eight months- -in triplicate airframe, it was only natural that the Robertson announced that he would award —and had to meet a specification hitherto February to October period of 1934 should £15,000 prize money and bear the £5,000 be filled with excitement. organising expenses for an Air Race from Mr·. A. O. Edwards engaged two of the England to Australia. Sir “MacRobertson” finest pilots available for his aircraft in intended that the 12,314 mile race should by R. G. M oulton C. W. A. Scott, who had flown the route- commemorate the Victoria State Centenary, three times solo in Moths and had an and for that reason Melbourne was to be the intimate knowledge of trans-Australian terminal. The month of October, 1934, was considered the prerogative of 750 h.p. or routes, and 'lorn Campbell Black, of long­ chosen to take advantage of a full moon. more American racers of the Bemlix Trophy distance flight to Kenya fame. Already renowned for his Antarctic explora­ category· For this they could expect £15,000 Bernard Rubin engaged Ken Waller, a tion backing, the 75-year-old confectioner payment, while the Race winner had the Cinque Ports flying instructor as his was not to know that his brilliant idea was opportunity of a £10,000 first prize plus a co-pilot, then fell ill and at first F/Lt. to produce the genesis of the war-winning £500 Gold Cup. Fielden (now A/Commodore) the Prince of Mosquito or to launch the Douglas Com­ Financially a loss and aerodynamically so Wales’ pilot, was nominated to take his mercial scries of airliners on their well- demanding, the D.H.88 was born of the place. Such was not to be, and after per­ deserved path of succese. incentive of the MacRobertson Rules and sistent application, Owen Cathcart-Jones, It was said that a s

his was the first Comet to leave the ground with a full load, yet he was airborne in 600 yards, and soon headed for a 2,330 miles non-stop trip to Baghdad. Cathcart- Jones and Waller were fourth away and after a bad swing to starboard, had to abandon the first attempt and lost a few minutes while Scott and Campbell Black left in the “Grosvcnor House”. For most of Furope there was a heavy overcast and visual map reading impossible. Both Scott and Cathcart-Jones were virtually lost until they crossed the Black Sea and headed into Asia. Clearly the Mollisons were well ahead. They made Baghdad, taking time off for a quick bath, and left the ’drome in a flurry of dust as the Bed Comet CSS arrived to refuel. Scott and Black had been lucky to find the R.A.JF. emergency field at Kirkuk and twenty gallons of precious fuel taken on had saved a tricky situation for them in this first important leg. Cathcart-Jones and Waller were much less fortunate. I leavv storms over the Taurus mountains and impending darkness had put them off course and a really desperate situation, even of contemplated suicide, developed when all seemed lost over the vast desert expanse. Fortuitously, they found some lights and brought off a miraculous landing at Dizful in Persia, slept the night and crept into Baghdad in the early morning light. Refuelled, they headed for Bushire. but after take-off the starboard engine failed and dense smoke called for emergency action. Fuel was dumped; but a fire risk was obvious, so the green Comet came in with a dangerous 100 m.p.h. touchdown speed. Six hours later, after all cylinders had been removed and one replaced (all in the oppressive heat of The Hamilton props anti E.J experimental marking indicate this to he the airfield centre) they were off once more the prototypes yet it has the solitl nose of the fourth (.tim et, sold to trance to catch up with the Mollisons at Karachi. as F-ANPZ· ("Flight' photo) 'I'his “equal third” position was to be short-lived, for a petrol leak delay held back CSR while “Black Magic” just beat the rolling sca-mist as it swept across the field. Yet more delay was to come for the unfortunate green Comet and it was not until the early morning of the next day that the mist cleared sufficiently to permit a take-off for Allahabad—where Cathcart- Jones and Waller caught up once more with the inexplicably retired Mollisons. By now Scott and Black were well ahead. First in the race to Allahabad and fastest on the next 2.210 mile stage to Singapore (in 12 hours), their situation seemed unassailable. But they had a terrible time battling with all four feet on the rudder bars and all hands to the dual control- columns through a storm over Malaya and a down wind landing at Singapore almost Mildcnhall line-up with "Black Magic” in the foreground and Jacqueline put paid to all their hopes. With no Cochran's Granville "Q.K.O.” in the background u hich retired at Bucharest mechanical troubles, “Grosvenor House” uml had a fantastic stall approach to lantling. Photograph by courtesy had only Parmenticr and Moll in the of “The Aeroplane ” passenger carrying KLM Douglas DC-2 to challenge their lead, and after quick then quite suddenly the port engine lost up to risky full revs, for the loaded take-off, refuelling, Scott and Black set course for all oil pressure. They were halfway across but so much was at stake, they risked all Port Darwin ancl an Australian landfall. the 590 mile stretch of sea, and only had and left for Charlevillc, half-way across Both were exhausted. Scott was captain one course of action to follow -to keep the Australian Continent. After five hours and flew in the front seat to make each close to the series of Islands and fly on of compass flying across the barren wastes landing and take-off. while Campbell- one engine to Darwin. Once there, they of Northern Territory, both pilots were Black took over for the long haul south, tried to locate the fault to no avail. They exhausted to the limits of human endurance over Borneo and the dreaded Timor Sea. had everything to lose, including their own Low clouds forced them to 1,000 ft. and lives if the port engine failed when opened Continued on page 249 In Pttlr Blue decor for the 1937 races as the **Orphan ” , Jlotcn by F/O C.lonsttm or Ken If tiller (C. J. Jackson photo) anti tit right, the unnamed Green Gomel owned by Bvrnnrtl Rubin, Jlotcn by Owen Cathcart-Jones and Ken IF tille r . (**F lig h t” p h o to ) ul a ue I/1t sae oto-ie versioi control-line scale I 18th / super a Build

DH. 88 COMET 238 a, 1958 May,

FULL SIZE COPIES OF THIS I/5th SCALE REPRO DU CTIO N ARE AVAILABLE AS PLAN CL/694 FROM AEROM OO ELLER PLANS SERVICE PRICE 7/4 PLUS 6d. POSTAGE May, 1958 of this famous aircraft for .1 See to Ice engines

the de IIA VILLAKD 118 COMET designed by L. Last W h o c a n r e s i s t this 29-in. span controline specifically arranged for a very high degree of scale model of the famous England-Australia air strength combined with simplicity and provided racer for two ·75 to 1 c.c. engines? The original the builder has the experience of making at least weighs 19 ounces and flies at approximately one control-line model, he should find absolutely 45 m.p.h. on 35-ft. lines with a pair of Allbon no trouble whatsoever in producing a perfect replica. Merlin -8 c.c. diesels. Construction has been Exact colour and cockpit details are incorporated on the plan and alternate engine bearer positions quoted for the popular Frog 80 and A .M . 10 engines. Construction is commenced by adding the top halves of all fuselage formers bisected on the horizontal reference line to the fuselage decking. Make up the bellcrank assembly and the wing centre section box of formers F4, 4A, 4B, 5, 5A, F6, 6A and two F13’s. Fit bellcrank mount into the wing section box, firmly attaching the assembly to fuselage decking. Now add the remaining bottom halves of the fuselage formers and attach the push rod complete with elevator control horn and leadout wires to the bellcrank. Add the vertical side panels to the fuselage formers and attach the completed tailplane-elevator assembly, connecting the horn to the elevator. Now complete the fuselage sheeting. Add the fin and rudder, tail skid and the rear fuselage cone. Fit ribs W l, 2, 3 to the spars and leading and trailing edges and then fill in with the remaining ribs. Add engine nacelle formers N6, 7, N8 and 9 to the spars and ribs, cement the bearers in position and coat liberally with shellac and knotting. Now fix the engines and tanks, add the under­ carriage and sheet the undersurfaces of the wings. Fix nacelle nose blocks and N3 in position by means of N l, N2 and two strips of ^-in. sheet. Cover top surfaces of the wings with sheet, .then complete the engine nacelle sheeting and wing root fillets. All that remains are the cockpit details and wingtip guide, covering, colouring and decorations. Be sure to check engines thoroughly before attempting that first flight. Providing the outer engine is started first and the inner tank is full at launching, one should have no “single-engine” troubles, for the Comet performs well on the port engine alone—once airborne. May, 1958

The O’Donnell Brothers in cheer - fill mood as they In words and pictures w in d J o h n ’s m o d e l for its best Jlight by “ R u s h y ” o f 8 : 05

O fficial recognition was given this year paper, and much speculation was heard on covered class, and here J. O’D. had his to the series ot Indoor Flying Meetings the possibilities of a pukka free-flight scale revenge. Phil Read’s 7 : 11 stood for some organised by the North Western Area of the contest at some future date. Certainly the time as the leading flight in this class, but S.M.A.E., and for the first time this popular ability of this little kit job made some people after a number of close attempts by John, meeting merited the title of British Indoor think a bit, and I predict some interesting he passed the Birmingham chap’s time and Nationals. For many years now the Man­ competition flying in the future. finally produced a fine 9 : 07 to place top chester Corn Exchange lias been the scene Conditions for test flying were not in this section, with Parham pipping Read of this specialised form of aeromodelling, conducive to good times, for considerable into second place by seven seconds. and it was hoped that enthusiasts from both drift was present in the hall, and many Free-flight sessions were interspersed with North and South would do battle on models got “ treed” or hit the sides of the bouts of chuck glider activities, and it was February 23rd, but as it turned out, building. A cold, sleeting storm outside obvious that this break from the hushed-and- although good support was received from found many points of entry, and flying was slow free flight work was welcomed by all many Northern and Midland centres, the frustrating as n result. Contest day was not and sundry. Unfortunately, a number of Southern contingent failed to put in an much better at first, but conditions im­ irresponsible types were more interested in appearance. proved as t he day wore on, and an unexpected playing tl c fool than in serious flying and The afternoon of the preceding Saturday burst of welcome sunshine about midday the organisers had difficulty in holding them was devoted to test flying, and, in the nature warmed the dome up a bit, and thermals back until it was time for them to fly their of things, many fine models we c hung up made themselves apparent! misguided missiles; and even greater in the various hazards attendant on this class This caught many fliers on the wrong trouble in stopping them when it was the of model flying. I lowever, the heavy-handed foot and proved that the old adage in acro- turn of the lightweight models once again. brigade flying ultra-light models were not modclling that “a flight is never finished More than one microfilm model was daunted, and much repair work saw a good until it is down” was still true even with hopelessly wrecked as a result, and it is entry the next morning for the contests indoor activities. Many fine flights were obvious that stricter measures will have to proper. The usual strong Birmingham clocked oil' prematurely, for models were be taken in the future. Trouble was also group was there in force, also keen types almost on the deck when height was regained, experienced with the flying of some tissue- from Tees-side, Sheffield, Leeds, Lincoln and minutes later the misguided modeller covered models, which, although within the and. of course, many clubs within the Area. would be bemoaning the fact that he weight limits as required for the class, were Models in general followed the usual thought the model was nearly down! A case obviously free-flighting r.t.p. models, and pattern of parasol-wing layout, but it was in point was Reg Parham’s 11 : 10, which proved a danger to the more delicate models noticed that more and more machines I timed personally. After a normal getaway, entered in the contests. Good sense pre­ featured the disc type fin situated at the the model drifted to one end of the hall and vailed here, and a special session was set extreme rear cf the fuselage stick, instead gradually sank until with some 5 minutes aside for the testing of these models, and of the underslung fin that was standard until on the stopwatch the model was only about microfilm followers breathed more freely. quite recently. “ Uncle” Bob Gosling pro­ six freτ above the floor. Then the model Hugh O'Donnell was streets ahead of the duced a twenty-year old tissue-covered started to climb, and travelled right along field with his finely-built glider of American model (though we were assured that new one side of the hall gaining height until well influence, and was obviously the possessor rubber had been fitted) and proceeded to above the gallery level. Another spot of of a very strong right arm! He led all the enjov himself hugely, his day being made drift maintained the machine in a good way, and when others neared his time of when he succeeded in breaking two minutes position, just missing the balcony railings, 34 seconds, pulled a better flight of 37 on the clock! and the model finally came in to a dead-stick seconds out of the bag, to claim a new Reg Parham had his usual crop of models, landing to place second to Phil Read’s British record for the category. including a very promising ornithooter, winning flight of 11 : 23. Reg Parham also claims a new Class Λ which fluttered around the hall to the delight The microfilm class was one of the closest- (under 30 sq. in.) record in the microfilm of the spectators. But for hitting the various fought indoor contests yet witnessed, for class with a time of 5 : 36, and John pillar? surrounding the Exchange, it is only 13 seconds separated first and second O’Donnell’s 9 :07 in the tissue-covered certain a new record for this class of model men, with a new man, George Walker of class is being submitted as the basis for would have been set. Mike Grimmett Birmingham, in third place only two seconds recognition of a new class of British record. trotted out his record-breaking tailless job. behind. Think only 15 seconds separating The Area is to be congratulated on staging but could not match his times of last year. the top three in a contest where flights are a meeting notable for its lack of “bull” and Most eye-catching was a super-light counted in large numbers of minutes! we hope that future events of this nature Kcil-Kraft Auster Arrow built by W. Nelson Ron Draper of Coventry (World Power will encourage wider support for a class of of Sheffield, which circled merrily for a Champ.) made a surprise appearance, and flying which demands a lot from the scries of quite remarkable duration flights. pipped John O’Donnell by one second for flier . . . but even more from the time­ The framework had been lightened to the fourth place. keeper! Anyone got a bottle of Sloan’s limit and the whole covered with condenser Better supported this year was the tissue Linamcnt?

M I C R O F I L M C L A S S (16 e n t r ie s ) Best: 7. Poole, D. Birmingham 4:40 5:52 5:52 1. Read. P. Birmingham 5:29 9:11 11:23 11:23 8. Robson, A. M. Tees Group 3:30 4:52 4:55 4:55 2. Parham, R. T. Worcester * 5:36 3:51 11-10 1 1:10 9. Barnacle, E. Leamington 4:43 3:44 4:43 3. Walker, G. Birmingham 11:08 10:14 1 1:08 10. Gosling, R. F. L. Liverpool 1:48 1:39 2:03 2:03 4. Draper, R. Coventry 6:13 8:06 6:07 8:06 II. Monks. R. C. Birmingham — — — — 5. O'Donnell. J. Whitefield 80S 3:38 3:13 8:05 6. Monks, R. C. Birmingham 6:32 6:54 7:43 7:43 7. Grimmett, M. W. Bromwich 2:41 3:45 7:30 7:30 CHUCK GLIDER (28 entries) Best: 8. Poole, D. Birmingham 6:11 5:51 7:25 7:25 9. Jukes. B. W . Bromwich 5:42 6:59 6:59 1. O ’Donnell. H. Whitefield 34.0 *37.0 34.0 37.0 10. Greaves. D. Leamington 3:50 4:52 6:09 6:09 2. Greaves, D. Leamington 27.0 34.7 31.5 34.7 II. Barnacle, E. Leamington 3:28 3:42 6:09 6:09 3. O ’Donnell, J. Whitefield 32.8 29.8 31.0 32.8 12. Robson, A. M. Tees Group 3-43 5:07 4:35 5:07 4. Monks. R. C. Birmingham 30.0 32.6 29.4 32.6 (* Class A record) 5. Ward. A. Whitefield 16.0 17.4 28.0 28.0 6. Faulkner, B. Choadlo 27.5 27.0 27.9 27.9 TISSUE COVERED CLASS (II entries) Best: 7. Yates. D. Wigan 27.0 27.8 22.0 27.8 8. Pickon, B. Wigan 25.0 25.2 25.5 25.S 1. O'Donnell, J. Whitefield 3:09 8:11 9:07 9:07 Wigan 13.5 2. Parham, R. T. Worcester 4:03 6:06 7:18 7:18 9. Hosker, M. 24.6 13.0 24.6 3. Read, P. Birmingham 4:53 7:11 7:11 10. Talbot. B. Wigan 23.4 20.0 24.5 24.5 4. Spurr, A. W. 11. Grimmo*.t, M. W. Bromwich 21.6 24.0 23.0 24.0 Tees Group 3:02 6:16 5:12 6:16 Wallasey 22.0 23.5 23.2 5. Walker, G. Birmingham 4:52 6:03 4:47 6:03 12. Done, J. 23.5 6. Roberts, G. Lincoln 2:15 5:55 4:32 5:55 (* New British record (1) Bob Gosling dusted the cobwebs from his 20-ycar-ohl model to join the boys. (2) Typical of the new-btok microfilm model, with built-up prop, braced icings and disc fin. (3) World Poiccr Ghanip. lion Draper (Coventry) teas a surprise entry. (4) An example of what ran be done with a standard kit. ΙΓ. Kelson (Sheffield) put the ’finance on this Kcil-Kraft Auster to good effect. (3) Reg Parham (W orcester) did not have quite his usual number of unorthodox models , b u t c a u s e d plenty of interest irith his flapper (9). (6) Ray Monks of Birmingham again demonstrated his versatility. (7) Mike Grimmett (West Bromwich) and his record-holding tailless model. (8) G. Roberts came ujt from Lincoln to enter the tissue- SP A N ...... I4'*_ covered class. (10) Hughie O'l). showed fine form LENGTH ...... 13%“ when winning the chuck glider event. (II) R o b s o n WING A R E A ...... 29^2 Sq! (Tees Group) looks pensive as his model is wountl tail ...... to '^ s o : by a clubmate. (12) E. E. Barnacle (left) helps MOTOR...... 2 STRANDS Junior Chump. V. Greaves (Leamington) wind his I3"X%4,X,«'30" well-constructed model (Right: Three-view of R. T. Parham's Class A TOTAL WEIGHT..... 0 3 OZ microfilm model for which a new British record ■032X 045 ' U.S. C L A S S D REC O RD HOLDER JUNE 29th.l957 33min. 9 -4 sec.

By ERNEST KOPECKY

WEI6HTS: OZ. • Oil ■ 0 1 9

TAILPLANE) 0 0 4 FINS • 0 2 3 0 5 0 •053 ΧΌ68" • 1 0 7

ROLL INT0TU8E- i3/ i6[ BOOM · 0 0 5 “ X I3"L0NG τ The Editor visits the first contest of the season organised by the A.R.C.C. at Chal- grove Aerodrome

Top left, Uwins* t pinning model M arch 2n d , saw the opening manoeuvre being a true spin with dead which is high-pottered with a lo a d - hn ri dln ct>"'TOl birds when the engine, the model fluttering down like a ing of only 14 ounces, coming in i>‘r'™f' Kad'° control Club held nomina- sycamore seed rotating rapidly around its for a near spot lumling. Top right, r . ,*nd tnaneular course speed events at own axis. Olsen crunks his Fox 29 with Payne Ctalgrovc, U' r);s>«re. for both single and Uwins won both contests, and although J ly in g a Waveguide in midille ground ulti classes. I he weather was kind, a light he has yet to perfect the flying technique and Soper complete with Rcbe Jodel wind providing ideal conditions for R/C necessary for these high speed machines, we using an Λ/Λ1 transistor receiver in tljing. Judging was carried out by George have no doubt that both he and Olsen will the background rionnest Kcdlich, and a distinguished visitor provide stiff opposition at this year’s trorn Belgium, Jean Pierre Gobcaux, current Nationals. Their equipment, built by Olsen, and as it was placed second in the stunt holder of I*.Λ.I. radio records for height, consists of tone operated 6 reed units on event performing a perfect loop at 50 feet distance, duration and speed. Orbit lines, with Mighty Midget motors for which alone gained several supporters for Hying showed great improvement over rudder, elevator, and engine controls. the G.G. system. anything yet seen, demonstrating the Simultaneous operation was possible on two An interesting innovation was the use of advantages of a specialist non-territorial club channels. a monitor throughout the day. in the form such as the A.R.C.C. which recently cele­ Charles Rial! of Rrixton probably pro­ of a standard U.S. aircraf t receiver complete brated its first birthday. Membership now vided the greatest surprise of the day when with amplifier, operated from a twelve volt exceeds 80 and technical advancement he demonstrated just what can be done by battery. It was possible to hear the “shush” through the interchange of ideas on the an enthusiast with home-built equipment. of carrier waves, the varying “beeps” of the flying field is beginning to bear fruit. He gave a most convincing demonstration different reed frequencies, and the peculiar Messrs. Uwins and Olsen, Hying similar of the Galloping Ghost system with a overlay of tones when Olsen’s simultaneous 1’ox powered multi jobs of 6-ft. span with J-scale “Smog Hog”, using an Aero- tone unit was in operation. symctrical 15 per cent, wings, gave an modellcr Transistor Receiver and G.G. With some twenty entries of which 15 encouraging display of high .speed aero­ pulse box exactly as published. He would recorded scores we can safely say that this batics, including loops, inverted loops, nave won the speed/coursc event had he not was a most promising radio contest with wing-overs, etc. Their most impressive run out of fuel before completing the circuit. which to start the 1957 flying season.

(2) Denis Grocott o f Salis­ which weighs 3 lb. and has slightly lighter bury with smallest model, loading than original design. He holds home a 28 o u n c e “ Traveller** built pulse box in right hand which is inaile complete with liipmax up with pots ami jMeccano gear wheels Rx and Frog 89. Other for control operation. A standard E.D. model was new and un­ transm itter is used. tried ami built for Oliver Tiger Cub. (3) Smallest ami largest! The A.P.S. t,Goliathy', belonging to Rex Franklin which did a stately lour of the air­ field perim eter. Rex is on left. (4) R. Marsh of Salisbury with his Virgo. Powered with an Oliver Tiger it uses the AIM transistor Rx, weighs 4 lb. and has a wing loading of 16 ounces. Cockpit removes for access to switch panel. IS o t e S.M.A.E. numbers al­ ready in sight on most entries. (5) Charles Riall with his Mills 1.3 powered 56-in. span “ S m o g H o g ” 244 May, 1958

SIGNALS RECEIVED BY 2P-2N ESCAPEMENT

(LEFT AND RIGHT ALTERNATELY)

SIGNALS RECEIVED BY 2P-1N ESCAPEMENT

(SHORT BREAK TO GIVE RIG HT A FTER L E F T ) I f . o

SELECTIVE ESCAPEMENTS & CASCADE SYSTEMS

probably no simpler way of obtaining multiple controls, Part 1. A review of current trends in especially for the “weekend flier” than with multiple escapement development and an explanation escapements. For example, with the addition of one extra escapement to a rudder only model the elevators of the working of selective systems. may be controlled and with a total of three escapements engine speed control may also be selected. By C. C BADGER Early systems used compounded escapements and had the serious drawback of still working in sequence; it was necessary to remember which control was used last. The T h e r e is n o real competition incentive in Great more recently developed “Cascade” systems have the Britain at present to develop multiple escapement advantage of always starting from the same neutral systems, there being only two distinct classes recognised whichever control is required. Control selection is by the S.M .A.E.: “Multi” and “Rudder only”. In the governed by the number of pulses sent out in quick Multi class there is no restriction on the number of succession from the hand button, the final one being controls or channels used so that the obvious thing to do held on to give the appropriate control action. is use multiple channel equipment, that is tuned reeds T o understand the working of a cascade system or filters, whilst the rudder only class caters for the complete, say one with rudder, elevator, engine and escapement flier with a not-so-deep pocket. aileron control, it will be best to consider the system Between these two classes there is a third, “ Inter­ divided into its component units. The rudder escape­ mediate” class which is already a competition class in ment may be considered the master escapement and will the U.S.A. This class includes aircraft which have any be dealt with first. number of controls operated by a single radio link which The type of escapement commonly used, i.e. F.D. may be of the continuously pulsed type or of the more Standard, is described as 2P-2N : two positions and two usual hand keyed type. Systems flying in this class are neutrals, and is unsuitable for use in escapement cascade the “Galloping Ghost”, Dr. Good’s dual proportional systems. The arrangement of a 2P-2N escapement is and multiple escapement systems. For several years in represented in Fig. 1. the U.S.A. the multiple escapements have been winning With this type Left and Right rudder are given over the pulse equipment in the Intermediate class. alternately and it must be remembered which was used During the last year, however, the pulse jobs have come last. To make rudder selection easier and selective the to the fore and are winning regularly. escapement is given only one neutral, i.e. 2P-1N. Although the pulse-operated equipment does finally There being only one neutral, when the transmitter give a better degree of control it does have the added button is pressed the rudder will always go to the same complication of a pulser at the transmitter and there is turn (depending on the linkage arrangement) say left, and when the button is released the rudder will return to the same neutral. To obtain the opposite rudder it is SIGNALS RECEIVED BY THREE POSITION ESCAPEMENT

AN i N 3 R D \N

POSITION THESE CONTACTS TOUCH a#, s &Β3Θ May, 1958 245 e a o A s a

ELEVATOR ENGINE RUDDER ESCAPEMENT ESCAPEMENT ESCAPEMENT

necessary to give a short signal to clear the unwanted neutral has been passed; this contact is connected to the position and then quickly hold on the signal again that engine escapement as shown in Fig. 8. the second arm of the escapement is caught before it The engine speed is changed whenever a very short returns to neutral. Fig. 2 shows such an arrangement of signal is given after neutral. Jt will be seen that normally escapement amis. when the third arm touches the engine contact the relay Unfortunately with normal button pressing techniques is in the ‘O n Signal” position so that the engine it is almost impossible to catch the second position on the escapement is out of circuit and the motor does not escapement shown in Fig. 2 because the second ami change speed. would have gone past before the button could be pressed The system can be worked with a normal push-button again. In order that the second position can be caught it keying switch provided that the escapement shaft is is usual to slow down the escapement shaft with some governed to a relatively slow speed. Better and quicker form of speed governor; this may be as shown in Fig. 3. selection can be obtained if the escapement works Alternatively, or as well, a quick-action switch may be quickly and is controlled by an appropriate switch used at the transmitter. system at the transmitter. The easiest type to construct Fig. 4 shows a convenient method of illustrating the is a three-button system as shown in Fig. 9. Switches actual control signals received by 2P-2N and 2P-1N 1 and 2 are normal micro-switches wired up as shown escapements. and hand held; Switch 3 is a relay controlled by a micro- Once the basic selective escapement has been con­ switch and should be mounted in the transmitter case. structed it is a simple matter to make it 3P-1N (see Switch 1 gives the normal continuous signal when Fig. 5). This third position may be used to energise pressed while 2 gives a short break in the signal if it is another escapement or actuator if some contacts on the pressed after 1. With the escapement so far described selective escapement are arranged to shut only in the (3P-1X) the operation of the switches is as follows: Left third position. Probably the simplest system to install rudder—hold switch 1; Right rudder—hold switch 1 at this stage is that shown in Fig. 6 which incorporates and then also hold switch 2; Third position—hold a Mighty Midget motor as elevator actuator. This switch 1, press and release switch 2; Neutral—release arrangement gives rudder (Left and Right) and Up all buttons. elevator. It will be seen that switch 3 gives a very short signal Another arrangement is to use a normal 2P-2N to operate the engine escapement and should have an escapement on the elevator and feed it from the third obvious and large push button so that it can be found position on the rudder escapement. 'Phis will give easily and quickly. Adjust the relay setting and the selectively Left, Right and elevator, alternately Up and condenser value so that the relay just flicks down when Down. Wire the circuit up as shown in Fig. 7. the button is pressed. To bring in independent engine control on this The arrangement described so far to obtain engine, simple cascade system it is only necessary to use the elevator and rudder control is a modified cascade “Oil Signal” relay contact and a contact on the rudder system; the rudder control is selective but the elevator escapement which makes momentarily just after the still works in sequence. T o give the true cascade system 246 May, 1958

wherein all controls are selective requires the use ot at as shown in the sketch and should be of the single acting least a 2P-1N on the elevator and preferably a 3P-1N. type such as the Mighty Midget motor shown in Fig. 6. The elevator escapement must also include a switch Signals received by the system would be: which makes only in the neutral position. This switch ensures that the rudder escapement returns to its Left ------hold------neutral position while the elevator escapement goes Right ------hold------through its cycle; otherwise the rudder would respond Down ------hold------to the second signal sent to the elevator. The whole Up ------hold------system is wired up as shown in Fig. 10. An aileron Roll ------* ------hold------actuator may be connected to the elevator escapement Change speed: -

Now build this SELECTIVE ESCAPEMENT — By G. C. BADGER Here are stage-by-stage in­ structions for modifying the E.D. Standard Escapement so that it will give selective positions and be suitable for operation in a cascade system. Each stage is complete in itself and may be operated in conjunction with the previous stages—construction can stop at stage 1 if only a selective rudder control is required. 8. Solder the roller bearing tube into the eccentric (one roller from a curtain rail runner) and build up the S ta K e I : tube by forcing on to it a piece of fuel tubing. To complete the roller a layer of fine garnet paper is stuck Governor: Fig. 1 and photographs. around it with Pliobond. 1. Dismantle the shaft and arm assembly by melting 9. Fix the roller on to its arm between soldered the soldered joint. washers and assemble the whole on the panel with the 2. Fix the escapement to the paxolin panel as shown escapement shaft. in the photograph with 6B.A. screws and nuts. 10. Adjust the roller spring pressure by bending the 3. Cut a piece of brass tubing to fit the E.D. shaft spring retaining hook so that the roller just grips the bush which protrudes through the rear of the panel and wheel properly. solder on to it the tinplate rocker arm. 4. Cut the friction wheel from £-in. plywood and sand Escapement: carefully to shape. Preferably the wheel should be held 11. Solder the arm back into position and bend up by a 4B.A. bolt in the chuck of a drill and trued up by one end so that it just clears the “OFF” lever. The holding a pad of garnet paper against it as it rotates. escapement now has only one neutral. 5. Mount the friction drive wheel on a short length 12. Extend the “ON” lever upwards by soldering of screwed brass bush which is soldered on the escape­ on to it a small rcctange of tinplate so that this lever ment shaft close up to the rubber hook. catches both ends of the arm. This gives the escapement 6. Drill the panel and mount the roller arm bush and two positions. also the retaining hook for the roller pressure spring. 13. Remove the red covered wire from the current 7. Make up the roller arm from 16 s.w.g. wire and saving contact and resolder it to the earth tag near to the solder on to it the pressure spring of 30 s.w.g. wrire. retaining screw for the electro-magnet. ROLLER ARM BUSH The current-saving device is now out of circuit so that a 4i-voIt flat torch battery should be used to power the escapement. The escapement may now be used as a 2P-1N unit provided that the following adjustment is carried out. If the escapement is to be controlled by a normal single push-button at the transmitter solder must be added to both ends of the rocker arm, always keeping it balanced, until the operation of the escapement is slow enough to enable the second position to be caught. If the escape­ ment is to be controlled by the quick action twin micro­ switch, as previously described there will be no need to add so much solder. Always mount the escapement well forward, near the receiver, so eliminating long wires to it and the radio interference which goes with them. Operate the rudder mm May, 1958 247 r a S B S H M H

via a balsa or dowel torque rod. The pattern of signals for this escapement is, of course, Photo above shotrs kick-up elevator system installed externally" as follows (Left or Right depending on the shape of Linkage could alternatively be at the escapement end of the crank used): model. ISote leaf return spring which keeps elevator against stop on untlersitlc. It tcill be seen from Fig . 2 that elevator is Right------Hold as required. only raised when escapement is iit its third position as per Left — ------Press and hold as required. Fig. 3. Rear bearings for control shafts on above model arc made from Woolworth's curtain runners as described in last II: 3P-1N. month's Gadget Review 1. Make up another single-sided arm as shown, part from an old escapement will do. 2. Solder this arm into the position shown, approxi­ Stage III 3. but fit it to the panel so that it operates in mately 60° behind the second position ann. the neutral position. The escapement is now of the 3P-1N type and may 2. Make a second switch unit which has just a “make” be used with a “kick up” elevator as shown in Fig. 2. contact and position this so that it closes in the third Signal for the third position is: position. — — ------Press, press and hold as required. 3. Insulate the switch-operating striker pin. 8 tag:e III: The escapement is now finished and may be used in 1. Drill iV in. down through the second position ann a full cascade system as detailed earlier. halfway out to its tip. 2. Solder a -j^-in. diameter wire in this hole so that it projects i in. below the arm. 3. Make up the change-over type switch shown from brass shim and rivet it to the paxolin base so that it operates in the third position. The escapement may now be used to operate another escapement when in the third position, to give alter­ nately Up or Down in that position, and neutral in all other positions. If a motor driven servo is used to give Up and Neutral it may be controlled through the change­ over contacts. S t a g e I V : Bend up the original current-saving spring blade so that the first position ann just touches it after leaving the neutral position. This contact may be used to operate a nonnal 2P-2N escapement for engine control. The escapement receives a short pulse from the 3P-1N and turns through 180° for each one. Wiring up should be as in the earlier part of this article. The escapement shown in the sketches and photo­ graphs is the Stage IV type. V :—Full cascade system. 1. Make up the same switch gear as described in Ι00Β Μ ) 248 May, 1958

also cut circular hole in nose for weight box. Cut the jl-in. diameter dowel to length (24 in.) and add J-in. diameter dowel to each end. Cement $-in. diameter dowel into pod making sure that both are perfectly aligned (it is a good plan to pre-cement the slot first, i.e. allow a coat of cement to dry on before finally fixing). Stand the fuselage in a vertical position and allow to dry for half an hour, in the meantime cut tailplane and fins to size and sand to streamlined section, also cut out the pod sides and, after adding tow hook, assemble with fuselage. Allow to stand for a further hour before shaping pod to a good section. After finally shaping the tailplane and fins cut away rudder and join again with hinge tapes, cover with lightweight tissue (doped on).

AN ALL-SHEET TOWLINE GLIDER TO A.l SPECIFICATION BY P. GASSON You may now return to the wings which may be shaped to plan form and sanded to the section shown. At this stage it pays to make a stiff cardboard template so that the section may be true and accurately formed, extra dope on the under-surface helps to hold the F o r t h e y o u n g e r modeller the Λ.1 glider provides undercambers. Having shaped the tip section, chamfer a stepping-stone from the elementary kit model to the ends to provide 22-in. dihedral at tips and after “pre- contest A.2. Whilst an Λ.1 does not embody the advanced cementing” both pieces, join together and block up to ideas current in A.2 gliders, it does step well ahead of set. 13y this time the fuselage will have dried and may the many kit models available and is well capable of be sanded to an oval section (here again a template is putting up flights in excess of two minutes from a most useful). At this stage cement fins to fuselage in a 50-mctrc line, it is in fact particularly suitable for the truly vertical position. When quite dry the wing should young modeller who has little cash to spare, but who again be lightly sanded and the whole covered with wants to get the very best for his money. tissue. Cut wing rest from iV-in. ply (note direction of In spite of its simplicity and size, the A.l has won grain) and cement to fuselage together with tail supports. great popularity on the Continent where many contests The auto rudder and dethermaliser fittings may now arc held each year, not only for the tyro but also for the be added and the job is done in just over five hours. top glider enthusiasts. T rim m in g It is our experience that when a beginner selects a model he looks for one of two things: Using small pieces of lead or lead shot balance the (1) A model with a phenominal contest record; or model at the position shown on the plan. Check that (2) A model which can be built in very little time. the wing leading edge is { in. above the trailing edge In either case he usually builds the model in too little (relative to the boom). time, with the result that the finished product is often Wait for a calm day before test flying and see that the warped or badly finished. It is therefore my intention to wings and tail units are well strapped down and perfectly put forward a model which although not coming into square with the fuselage. the first category is capable of giving a good account of 1 land launch into wind and watch carefully (from itself. At the same time the major consideration has been shoulder height the model should glide streadily down to produce a model which can be built almost before to earth and cover a distance of about 50 feet). When the materials have been bought (the actual building this is achieved towing may be attempted, but if the time being only five hours). model stalls or dives, correct as follows: A stall may be The model described here is entirely of solid con­ corrected by adding a piece of & -in. packing under the struction making it robust and particularly suitable for leading edge of the tailplane, while a dive may be the beginner. It can be built for as little as 8s., and takes corrected by packing up the trailing edge. When a steady no more than a Saturday afternoon to complete. glide has been obtained adjust the rudder stop to give a wide circle (about 75 ft. diameter). At first two up ConKtriieiioii steadily on a 75-ft. line and try to give the model a good If a rapid programme of construction is to be followed start off, coach the model round when on top of the line the wing should be started first. Cut sheet to correct so that it sets off in its correct circular flight. Watch out lengths and slightly chamfer both sides so that the for stalls or any tendency for the nose to drop. After leading and trailing edges may be added to form the seeing that all is well you may now start to time the •curved wing section (chamfering is best achieved by flights (from 75 ft. a duration of about 50 seconds should using a long sanding block). Having pinned the strips be obtained). If not, alter the trim slightly by adding or ■together leave to dry for about one hour. Attention removing a few pieces of lead shot from the nose (about should now be turned to the fuselage, cut the pod to the J-oz. to start with), test fly again and again, each time shape shown on the plan taking care to make the slot reducing the amount of lead shot added or removed carrying the boom as neatly as possible, next drill end until maximum duration is obtained. Under good trim, •of slot with a A-in. diameter hole to take wing retaining flights of two minutes can be obtained from a 50-mctrc .dowel, cut slot in front of wing rest and sand smooth, (165-ft.) line. May, 1958 249

Conclusion 'Flic modeller who has built two or three models should find no difficulty with this project and it is conform to the A.l competition rules necessary only to remark on a few points which need and may therefore be flown in com­ special attention. petitions to that specification, providing, (1) If you find you arc dropping behind schedule, of course, that the overall weight is don’t rush things, but take another hour to make more than 5-08 ozs. a good job, it will be well worth it when you MATERIALS REQUIRED: eventually get on the flying field. 1 sheet 4 in. x 1 in. x 48 in. medium balsa (2) Wing tips should be well thinned down (a max. or 2 sheets 3 in. x £ in. x 36 in. of -Jit -in. thick at extreme tip) excess weight here 1 sheet 3 in. x i in. x 36 in. medium balsa. f o r th o s e tv h o 1 sheet 3 in. x tV in. x 36 in. medium balsa. prefer to tcork will lead to inconsistent and often poor per­ I block 2 in. x 4 in. x 12 in. hard balsa. to full-size formance. 1 dowel ϋ in. diameter x 24 in. spruce, or birch. p l a n s , S ie s ta is (3) Materials have been reduced to a minimum, so be 1 L.E. j5 in. x 1 in. x 48 in. medium balsa. obtainable as or 2 i in. x 1 in. x 36 in. medium balsa. G 696 price 3/6 careful how you cut up the precious balsa. 1 piece 5 in. x 2 in. x Ά; in. ply (note grain). p lu s 6(1· p o s t (4) The size of this model has been made to 2 sheets lightweight tissue. from A.P.S. 1 jar of clear dope. 1 length of 20 S.W.G. piano wire. an A.1 in an afternoon1 short length of & in. dia. dowel.

Enlarge this drawing five times for full size

THE RACING COMETS when they too noticed oil pressure failure, F-ΛΝΡΖ 4th Comet built. this time on the starboard engine! A G-ADKF 5th Comet “ boomerang” continue l from "'age 237 deviation to Ratavia enabled KLM built for Cyril Nicholson, abandoned and it was Scott’s intimate knowledge of mechanics to sort out the fault, and after over Sudan by Tom Campbell-Black the locality that saved the situation for a an interim stop at Koepang, they reached and J. C. McArthur, through prop, single engined landing at Mount Isa just Australia at last, about 500 miles behind trouble. before dawn. They had only 1,000 miles to the famous Roscoe 'Turner in his Hoeing 1936 K5084 Displayed at Hendon. do. and the spontaneous enthusiasm of the 247, a position which remained unchanged 1937 K5084 Reverted to G-ACSS by Australian people spurred them on under to the end of the race at Melbourne. Their Essex Aero Ltd. for Gipsy Six tortuous conditions. At Charlevillc, Scott flight had taken 4) days and they were Series II engines, D.H. props., etc., phoned Major Halford the Gipsy engine fourth to arrive, yet they decided to turn called “The Orphan”, finished in designer in London for advice on the port round immediately for an “out and back” pale blue, placed 4th in Marseilles— motor, and then with eight hours lead over record. Damascus—Paris race, flown by the DC-2, they flew for six desperate hours Sir Macpherson and Lady Robertson F/O Clouston. 1 handicapped out of in lmlf-nn-hour and ten minute shifts to saw them off at Laver ton airfield, laden King’s Cup, placing 12th at 214 reach the Victorian State Capital in pour­ with newsreels and photos of the race m.p.h., pilot Ken Waller. ing rain, 70 hours and 54 minutes after winners, plus the last chapter of “Scott's Renamed “The Burberry”, estab­ departing Mildcnhall. They were first in book”. From there they went trouble-free to lished Croydon—Cape—Croydon both speed and handicap sections of the Allahabad, where two cylinders failed on the records, F/O Clouston and Mrs. race, had broken all records and though run-up, hut “ black Magic” was there and Kirby Green. more dead than alive, had shown the World Jim Mollison sportingly gave permission for 1938 G-ACSS Established London — that dc Havilland. and their superb piloting a swap with his engine parts. Wellington — London records could bring the farthermost corners of the After 61 hours 46 mins, flying time, over (F/O Clouston and V. Ricketts). globe within three days from London. They a period of 13$ days, they were greeted on 1939 G-ACSS Stored at Gravesend. were not to know that their “engine fault” arrival at Lympnc by their sponsor, 1951 G-ACSS Redecorated and rebuilt was only a dud pressure gauge. Bernard Rubin. by D.H. Technical School, Chester, Meantime, Jones and Waller were clear The following notes cove subsequent events in original “Grosvcnor House” red of Allahabad and were having n trouble- in the storv of this magnificent aircraft. and white, with one engine, D.H. free run to Singapore, where they stopped 1935 G-ACSP Sold as CS-AAJ to props., spinners and revised cowls, for a brief 30 minutes to refuel and re­ Portugal (last heard of in 1 v37). exhibited at “Festival of Britain”, charge the props. OfT for Darwin, they were G-ACSR Sold as F-ANPY. thereafter suspended in D.H. Engine in the same position as Scott and black, G-ACSS Acquired as K50S4. Co. showrooms, Leavcsdcn, Herts, 250 May, 1958

AIRCRAFT

I N

SERVICE

Number 5

Drawn by G. A. G. COX

Described by R. G. Moulton

F or m any years the Royal Air Force Canberra Originating as an English Electric development force has enjoyed a situation whereby they could of the sole B.5 prototype for ground attack wrork, more than “cock a snook” at their fighter con­ though still retaining its high altitude potency, temporaries. Capable of turning inside or even VX 185 w'as converted in 1954 at Preston and accelerating away from some of the most advanced became the first of the fighter-hood B.8’s. This was of swept-wing interceptors in service the two years after the same aircraft with standard “Cranberry” has upheld its high reputation for pressurised nose and goldfish bowl coupe hood had high altitude performance, and in so doing has double-crossed the Atlantic in 10 hours 3 \ minutes, established an enviable list of high speed records. the return trip from Gander to Aldergrove being Now in the Interdictor Mk. 8 (and the PRU Mk. 9 soon to follow from the Queen’s Island factory of Short Bros, and Harland Ltd. at Belfast) the Canberra has entered a new phase—and a new duty of “nuclear capacity”. LABS or loop bombing will be part of its low-level attack technique and with photo reconnaisance still one of the most important aspects of defence, the future of the Canberra is now even more assured although in fact it is already nine years since the first blue prototype VN 799 flew on May 13th, 1949. More than ordinary credit is due to the design team led by W. E. W. Better (responsible for the Lysander, Whirlwind and subsequently the P.l and Gnat) who joined English Electric in 1944 and produced the original Canberra to meet M.O.S. specification B.3/45. A contract for four prototype A .l’s as they were known was awarded in January, 1946, and total production to date amounts to some 750 aircraft in the United Kingdom many of which have been exported to the air' forces of Ecuador, India, Peru and Venezuela, plus 400 licence-built Martin B-57’s with U.S.A.F. and more than 50 B.20 versions made for the R.A.A.F. at Fisherman’s Bend, Melbourne. In all, an impressive total and one which will ensure a place in the forefront of outstanding aircraft for the Canberra. T he B (l)8 is a comparatively rare bird in British skies, but has now firmly established itself with Second T.A.F. Germany where 88 Sqdn. at Wildenrath have been operating this low' altitude variant with the four-cannon Boulton Paul gun-pack for some time. May, 1958 251

made at an average of 605.5 m.p.h. The later 100 series Avons (distinguished by the larger triple-charge starter bullet) provide even higher performance in the production B(l)8, for, unlike it* Martin-built B57B and C equivalent it is able to utilise extra power without any weight penalty. The new nose, with fixed pilot hood giving a wide field of vision and prone or two-seat (one for take-off) navigator positions gives the Canberra an air of improvisation. Navigator mobility for low- level visual map reading precludes the possibility of a second Martin Baker IC ejector seat, so for the bomb-aiming and navigating crew member the only way out is via the starboard entry hatch. The pilot is able to detonate the rear section of his hood prior to ejection, or to go through the perspex. bases in Germany on the difficult East-West route. The long weapons-bay of the Canberra fuselage Normal tankage in the large centre fuselage area forms a capacious receptacle for a variety of weapons over the weapon bays is increased in both Mk. 8 (and experimental rockets). In the B(l)8 the rear and the PR.7 with unspecified wing fuel capacity. section carries a four-20 mm. cannon pack with a greater ammunition store than hitherto fitted on For such a fast service aircraft the manual any fixed gun aircraft and forward bomb doors push-pull operation of the balanced rudder, have had to be stiffened against the formidable elevator and ailerons is somewhat out of phase in effect of gun blast. Other armament can be carried this era of electronics and servos: but convention on underwing pylons, and in the forward bomb has obviously played a strong hand in prolonging bay, an Avro triple carrier can load three 1,000-lb. the Canberra’s excellent service record and apart bombs, or sixteen 4.5-inch flares can be fitted from early tail jack troubles, the control system for night action. enjoys an excellent reputation. In fact, on reflection, any analysis of the Canberra can only result in the It is for nocturnal activity that the B(l)8 is conclusion that it is a thoroughly conventional finished in polished Dockers Gloss Black on its aircraft, designed to the logical engineering require­ undersides, and although the prototype was black ments of the pre-swept wing era; yet quite equal on all surfaces, standard Dark Green and Dark to many of its ten-year-younger counterparts. Sea Grey camouflage (polished for high speed flight) is used on the topsides of production aircraft. Tip-tanks are not always fitted, and are in any case Span 64 ft., Length 65 ft. 6 ins., Height 15 ft. 7 ine. A detailed jettisonable. Their combined 488 gallons capacity description and l/72nd scale drawings of the Canberra development would provide sufficient extra range for the up to the B2 appeared in AEROMODELLBR August, 1953, and is available as reprint L2171, price Is. plus 6d. postage from Aero- Canberra to fly non-stop across the Atlantic from modeller Plans Service.

Heading oppositei Roly Ileaniont brings the m odi­ fied B.5 record holder close to the camera to display the first B.O nose. External difference is the bar in the nose side windows, and the all­ black colouring. At left the unphotogenic colour scheme hides the belly cannon pack but shows the white serial of an 88 Squadron aircraft to good advantage. Beloto ten see a late production version as drawn overleaf, and diplayed at the 1957, S.B.A.C. show, Farn- borough. Right: two close-ups of XH234 at Farnborough showing rivet dimpling on the thinner gauge rudder skin, the drag plate on the trailing edge and dose detail. All-black proto­ type shows offset canopy, and Interesting reflection of a Fairchild Packet on the nosecap WHEELS iystLAoe ' SERIALS ' COLOUR LISES COLOUR j .. SECTION m

r to, r

μ 1 1 μ pain us us IlfcCtANOLCS DENOTE IlfcCtANOLCS WICttY SPACED YELLOW YELLOW SPACED WICttY trfTTTq-F l W B m s l 254 May, 1958 WORLD NEWS I nternational C o ntest fever has begun to take a grip and the latest news is that both Japan and New Zealand will definitely be sending models for proxy flying in the free-flight champion­ ship at Cranfield. The European Controline Championships in Barcelona, Spain, which un­ fortunately coincides with the British Nationals on May 24th, 25th, 26th, promise to be extremely well organised although not quite so heavily supported as the normal meeting in Belgium which for thia year is delayed until September. This meeting in Belgium will be r.in in special conjunction with the International Exposition in Brussels and will run to the new rules of team racing and, presumably, for team constitution, meaning three modellers for each of the newly recognised classes, Speed, Team Race and Aerobatic. One club in Canada which appears to be the centre for a number of ex-S.M.A.E. members is the Toronto Gas-Hoppers. This club is particularly fortunate in having indoor facilities of (lying at the R.C.A.F. Drill Hall, Eglington, Toronto, and though a 35 ft. ceiling limits the amount of power one can use, times of more than ten minutes have already been recorded. Bill Etherington and Mike Thomas have been flying helicopters, Bill setting a new Canadian record of 1 : 33-2 and to complete the ex-S.M.A.E. picture, Dave Sugden and Bill Henderson are expected to join the microfilmies soon. A new type model jet described in the Czecho-

From the International reported last month tre now hmvm pictures of the Leningrad team from Russia which dulled Finland. At top, Sim onov in lighting hist tl/l fuse, he wa» 4th in power with 849.4 secs. Model has a Tu.104 picture on the fin. Centre, the team, L. to It., Captain. I.issitski; Trainer, Slerbuk: Fliers, Enin (A/2), Simonov (Power), Kolegov (A/2) and Abramov (Power j. Bottom: Kolegov with his A/2 placed 2nd. Below, in consitlcrnbly warmer climes at Singapore, Mr». Robin Wee and hubby*» A.P.S. “Shorty” May, 1958 255

169.58 rti.p.h. was the official U.S. Nationals winning tim e for Everything works on this PWS-26 Intilt by Kuszilek o f Cracoic. D. Randull-Cullin in Class C Open last year , flying this including illuminated instrument panel anti medicine chest. Monoline McCoy 60 model Is 36-in. span for a Zeiss A ktivist 2.5 c.c.

slovakian modelling magazine is credited to Alfred Polish modellers are particularly adept at scale Prill of East Germany. Basically like a conven­ work as we know so well in England through the tional pulse jet of the Dynajet type, it has a needle P.A.F.A. club activities and the standard is valve control for petrol feed, and the jet pipe is extremely high despite lack of materials and any jacketed by a container holding “Kaliumperman- engines of less than 2·5 c.c. Mostly they are C/L. ganate”. This is fed forwards to the combustion boasting working controls, lights, flaps and retract­ chamber via an open tube and presumably reacts able undercarriages. to the heat of the jet pipe. Thrust claimed is 5 lb. Here’s a tip from Grish Bros., who produce the There is good news of modelling in Poland Internationally famous Tornado props in the following changes of policy in that country. U.S.A. It concerns Nylon, as used for moulded Whereas it was considered a bad thing to model a props, where the very process of manufacture sets pre-war Polish aircraft, and restrictions were placed up internal stresses in the Nylon, rendering the prop on information for flying scale models, the move­ liable to break until relieved by ageing or heat ment is now encouraged by the Aeroclub of Poland treatment. The ageing time fluctuates from six throughout its many branches. A recent Air Force weeks to eight months, so the quick way to ensure week exhibition provided a wealth of information that your prop stands up to high revs and loading for the scale enthusiasts and in September last, a is to immerse it in boiling water for 15 minutes. National flying scale contest was held in Warsaw Allow to cool naturally. You can at the same time attracting no less than 36 entries. dye the prop with a Nylon fabric dye in the water

TIMER SPAN SPORT MODEL FOR * 5" ICC (APS CCDE B -O MOTORS i6 $ wfi wire ROARING 20, <λαανε struts Φ SEW TO FORMERS DESIGNED BY l * β 1 .FRONT FRONT 16 swo WIRE ^yRCRR REAR U/C LEGS λ SWG.W.*RE B.C.Striegler ( 0 SEW TO FORMERS CCPYRICHT CF J

THE AEROMODELLER PLANS SERVICE BEARERS CEMENTED TO 38, CLARENDON RD. WATFORO,HERTS ______Basic SIDES

MILLS · 75 SHOWN FORMERS CELLULOID SCREEN Ib ’ x U * SPRUCE SCRAP BLOCK ^IS'SHEET OUTLINE REMOVABLE CARD OR ALUM". PANEL THREAD BINOINC. CARD OR ALUM. PANEL 3 - SO STRINGERS |46“SHECT TOP I PLASTIC SPINNER

kB"SHEET FLOOR

TAILPLANt'

/ I6SWG LEO' ZVX** SCRAP BLOCK V je’SHEET BOTTOM/ / CELLULOID REINFORCE WITH GAUZE TRIM TAB

LOWER STARBOARD WINS 2* OlHEORAL

.ΐΛ'ρυτ INSERT CRACK SPAR DOWN TO TIP v\

SHEET W SO. t ip s

116’ SHEET OUTLINE

REVERSE «’LAN FOR PORT WING PANELS ε STARBOARD HALF OF TAILPLANE ,

ft wHfltf MODEL WITH UGH

Full size copies of this 1/3 scale reproduction are available as plan PET/695 from Aeromodcller Plans Service, price 3/6, plus 6d. postage May, 1958 257

R O A R I N G 2 0 A nifty sport biplane for small engines by B. C. Striegler from Houston, Texas

Till? PERTOD AFTER World War 1 is now Unown as the Roaring ’20s in the United States. During this time of prohibition and prosperity women daringly exposed their ankles for all to see, and men wore raccoon coats (complete with pocket flask of gin). Many small biplanes flitted through the peaceful the sides and formers are in correct alignment. skies of the 1920’s and it is from this period that Allow the fuselage to dry overnight, then add the the “Roaring 20” gels its name. additional formers. Be sure the fuselage is straight This small sport model was developed out of a before the two sides are glued together at the tail. desire to have a model that performed realistically Plank the forward deck of the fuselage with soft without danger of thermal flights. Another require­ j^-in. sheet and add the J-in. square stringers to ment was that the model must be easy to transport. the rear deck. Finally, plank the bottom with soft With these specifications in mind, a biplane -in. sheet and add the scrap block nose fairing. configuration was chosen for the following reasons: The cowling and cockpit cover can be made of card 1. Biplanes are realistic in flight, and have a or light aluminium. The cabane strut fairings are universal appeal among modellers. bound in place with thread. 2. Biplanes are relatively poor soarers because of The wings are quite simple and no instructions interference drag between the wings and should be necessary, except that one should avoid around the necessary struts. warps and ensure that each half is true to its 3. Biplanes arc usually more compact than opposite side. monoplanes of the same wing area, and are The rudder and tailplane outlines are made from therefore easier to transport. light 3^2 -in. sheet balsa. Cover both the rudder and The result is not only pleasing to the eye; but. also the stabiliser with medium weight tissue, and fit boasts the type of sport performance that will temporarily in place on the fuselage. Then add the endear it to all “week-end” fliers for Roaring 20 is soft balsa fairing blocks on either side of the rudder easy to build, very easy to fly and will give years of and cement the tail assembly together as a detach­ service. able unit which can be fixed permanently after test Cut out two fuselage sides from firm -ft-in. sheet flights arc concluded. balsa. Glue on the two motor mounts, making sure Cover the entire model, except for the tail, with that they are of the proper width for the engine yon heavyweight tissue. Add the soft balsa head rest, intend to use. The mounts shown on the plans are and give the entire model five coats of clear dope suitable for the Mills *75. Then bind the front and thinned 50 per cent. Sand lightly between each coat rear wire cabane struts to their respective plywood of dope and finish the model with three coats of formers with thread and glue firmly in place. Also colour dope. The original is cream with black trim. bind the landing gear struts in place to the proper Now glue on the acetate windscreen, holt the engine formers in a similar manner. in place, and the “Roaring 20” is ready to go! Assemble the fuselage sides to all the formers Balance the model as shown on the plans and back to the rear of the cockpit, making sure that test glide. Any tendency to stall or dive should be corrected with weight in the nose, or tail, respectively, as the correct incidence is built-in; hut tail movement can be used, limiting the packing to a maximum of }$ in. Make the first flights under low power, and adjust the rudder tab for a gentle turn to the left. The original “Roaring 20” is powered with a Mills •75 turning an 8 x 4 Tornado prop. All-up weight should be around 13 ounces. Good living! a s a ®

AIRCRAFT DESCRIBED No. 92

H l b a t r o s (LUI —by P. L. GRAY

A l b a t r o s WBRKE, founded before the first included the trestle type centre section and the World War by Dr. Walter Iluth was one of the normal Vee type undercarriage struts. An Albatros most prolific builders of aircraft for the German ‘‘hockey stick” tailskid was mounted externally on Army. Its famous single-seaters from DI to DVa an inverted pylon of four small struts. Wheels were held an almost complete monopoly for equipping sprung with elastic shock cord round the axle. tlic Jagdstaffeln from 1916 until superseded by the Complete empennage was a steel tube structure Fokker DVII in 1918. What is not quite so well- of fabric-covered fiat plate section. Two lift struts known is that the firm produced an even longer braced the underside of the tailplane and a single sequence of 2-seater General Purpose aircraft in the cable the top side. scries Cl to CXV from 1915 to 1918, many of which Flying Controls were in the form of a standard were produced in considerable numbers. short leverage stirrupped rudder-bar and a three- The 160 h.p. Mercedes powered Cl 11 (150 Benz spoked control wheel. Throttle ratchet was on port version was not widely used operationally) was side of cockpit and was so arranged that on failure produced in far greater numbers than any other the engine went to full throttle and did not stop, Albatros 2-seater, being built by the parent firm at as on British types. Some degree of control with the Johannisthal, its subsidiary at Schneidermuhl and magneto switch was then still possible. Altimeter by many sub-contractors. revolution counter, fuel pressure, and temperature The majority of Germany offensive work was gauges as well as the Bosche magneto switches were undertaken by the 2-seaters on bombing and photo­ part of the cockpit equipment. The compass was graphic sorties over allied territory' (the single- usually inverted in the centre section or buried in seaters being mainly used as interceptors over their the starboard lower wing root. A fixed forward own terrain) und their crews attained a high degree firing machine gun, mounted alongside the cylinders of combat efficiency commanding no little respect on the starboard side did not become standard from the pilots of the R.F.C. who tried to shoot them equipment until well into 1916. down. Both Mannock and McCudden testify as to what wily birds these two-seaters were and how The CIII was operational against the R.F.C. difficult it was to record a decisive victory over them. until the close of 1916 by which time it was being The hallmark of all Albatros aircraft was the replaced with the CV and later, the CVII. It was three-ply covered fuselage which dispensed with still widely used for training up to the end of the any internal bracing yet produced an extremely war—and relegated to lesser theatres of war. strong and rugged structure. In the CIII the fuselage was of normal slabsidcd shape with a slightly' rounded top decking and tapered to a horizontal knife-edge aft. The nose was un- spinnered of streamlined with somewhat bulbous metal cowlings retained by spring clips. Wings were or orthodox fabric-covered wooden construction, built on two hollow spars, with a false rib reaching aft to the second spar between each of the main ribs. The forward position of the spars imparted a liberal degree of flexibility to the rear half of the wings which considerably improved lateral stability. All struts were of streamlined steel tube which

Heatling shows a CIII without wheel covers and cluu· brakes, und with natural finish colnurinfi. Above: the exhaust ducting of a Linke-Hofmann built CHI, anti the ra d ia to r situation hardly provide a good outlook for the pilot. Cefi: a Inseitge fabric covered C IH , S IN CW W03{I7. All photograph» by courtesy of A. K. Weyl

260 May, 1958

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IT VIURATES A LITTLE UNDER LOAV

Norman Blake writes ns that he started bench tests with X dueled fans and ran up against a very puzzling feature. He ^ first ran the motor on a bench rig with the impeller and X measured the r.p.m. as 14,000. lie then took an open ^ Hexagonal Camouflage cylinder, rolled to give a small clearance around the impeller X and very carefully advanced this over the impeller, when ^ A simple method of obtaining realistic effect running, to observe the effect. The result as soon as the X end of the tube completely covered the rotating impeller the ^ devised by W. I. BARRETT revs went up by some 3,000 and the “draught” (through the X end of the tube) fell right off. The same thing happened with ^ O n e o f t h e difficulties encountered in building parallel, divergent and convergent tailpipes. Yet why should X exhausting the slipstream through a tube raise the engine S flying scale models of certain German aircraft of speed and reduce the thrust? f the 1914-1918 War has been the reproduction of the What would you do in a case like $ hexagonal pattern camouflage system. this ? Turn the page for the solution $ The method used on the full-size aircraft was to to the problem, printed below. % dope in place fabric which had been printed previously. A similar scheme may be used on models by following the instructions outlined as follows. l’r«‘-pasiifeil tissue— with rlialk ! The first step is to determine the size of the hexagons to be used on the model under construc­ tion. This is best done by studying photographs of the machine concerned. A start can then be made on the stencil, which is marked out from a sheet of paper on which has been drawn a honeycomb of hexagons of the required size. Every fourth hexagon is marked on to the THC THRUST JUST FELL OFF 4 stencil in the sequence indicated in the sketch (Fig. 1). The most suitable stencil material was •suompuoa Sutuunj Dijets jopun Afjood Xjoa aAKtjaq found to be -010-in. thick acetate. A piece at least su e j pajonp'XqA\ uosttu Xjcuiiid v st sauipae; (<3uu|ut%i<|„ < ojenbopc jo >puq •uirajjsdjis* oqj jo m'juiojjs oqj'saonpoj 6 ins. square should be used, as smaller pieces tend ‘aja.w it sc ‘un;.Ti}sdj(s ua\ o s ji jsuinilu tfunjJOM si j| j«qj < to make matching of the pattern difficult. jaej atp os|v dn spoads ouiitua ό ιμ m jj jjn*u oqi ιμ ΐΛ \ ‘jp s i i ..autpeoiun,, si if aauoj j -uirAJisdijs u,v\0 s ji u io jj A|jtfnjJiA ·r i * The hexagons marked on the stencil are then cut at|j optsui u io jj an: .wrap .won aju o ubd j i pue ja[pdiui out with a sharp knife. It is preferable to make 3ijj joao aqnj κ jo pua ntp fluijjnd ,iq yo uotitoi siiji pnojqcj < ■spjEMUc a p e jq o q i jo s d ij o q j iu o jj ·.»·; ‘sp jc.w u i X[|Kfpcj jil* sji Heading shotes the simplicity of application, and below, a swi:jp ji 3μ ainns u uo jtc oaaj tu ftuuiuru si iirj jo jajjjduii * D.VH with lower tcing coreretl by pre-chalked tissue. Built to otp uat|A\ 'a|dtuis ojmb si uo»» aq j' : ΐ ΐ Ί Λ Ι ί > W ljlSth scale by Brian Smithies, it has a most realistic a p p e a r a n c e

“ SUCCESS ”

...... 4 ή * May, 1958 261

CUT OUT HEXAGONS APPROX ^32" LARGER ALL ROUND THAN NOMINAL SIZE

these slightly larger than as drawn (Fig. 2) as this prevents plain borders around each hexagon on completion of the pattern, due to the difficulty in getting the colouring material right to the edges of the hexagon. This completes the stencil, the preparation of which may be considered the most tedious of the whole job, but care spent here will be repaid with the accuracy of the finished camouflage scheme. The next stage is the application of the pattern to the covering material, which is of either heavy­ weight or lightweight tissue, depending on the size o f m odel. With the tissue paper laid on a smooth flat surface, the stencil is placed at the top left-hand corner, and the colour applied to the hexagonal holes. For the irregular pattern use stencils as below. The colouring agent is a stick of chalk of the Hand-painted (hies* his patience!) by /Irian Ooienham of Enfield, this 1/10 scale Ti.VIl has an Alihan Javelin, is a 22-os. correct shade, which can be found in most packets fif in spite of the paint iveight. Mr. Harrell's idea, using of children’s chalks obtainable at toy shops. The authentic stencil pattern hr lair, could *

Frank Cheesman ha* unearthed this ran; gam showing 10 H.jV.A.S. Squadron lined up. Knelt is lettered **A*l for the flight, and the distinction for individual a/c left to the tcheel rovers. Stripes are Black ami White

trout the (Chus. Donald (Collection, a rare binI icith a tcidc expanse of losenge fabric covering. It is a Linke Hofmann If-7 bomber trith a pilot position not unlike that o f the present-ilay Beverly transport

insignia: but the other schemes were far from drab. 139278 had matt silver as a basic colour and 435271 was Midnite D ue—quite a shot in the eye for the shiny aluminium wallpaper ei thusiasts but each a nice scheme for the paintbrush brigade n aking the popular Aeromodcllcr Plans Service control-line Ir.vader from Plan CL 520. It.A.F. Cliun^cx Trainers are to have yet more conspicuous markings so that they can he given a wide berth by other pilots in this jet age. Fluorescent orange paint is to replace the well-known "Trainer Yellow" for the bands around the fuselage and wings and in addition, tlie outer 18 in. of wingtips and 12 in. of tail tips arc to have the same treatment. Display missiles, tanks, etc., were painted this colour for the S.B.A.C. display at Farnborough last year, and the Slingsby Skylark high performance sailplanes have a distinctive "Flame" tone, perhaps the visibility of these experiments has prompted the Air Ministry into making the change. “ Harry Tate” Bruce Robertson lias given us'an interesting sidelight on the R.K.8 drawing published last month. George Cox depicted F.3556, with F rank C heesman ΛΤ the College of Aeronautics has some very the “A PADDY BIRD FROM CEYLON" Note on the nose, and interesting comments on the notes given by Peter Gray and adds Mr. Robertson explains the origin as follows: some information from notes not available to Peter at the time of % “The name originated in a scheme sponsored by the Overseas writing the Camel feature in March. Club in 1915 for contributions to enable aircraft to be presented to 1. ‘‘The photograph heading page 142 (March issue) depicts the R.F.C. and R.N.A.S. Supporters in Ceylon, in response to an Camels of 45 Sqdn. in Italy and not as stated 210 Sqdn. R.A.F. appeal through the good offices of ‘The Times of Ceylon’ raised This error seems to have been caused by an incorrect caption at initially the sum of £1,500 to cover the cost of a B.E.2c to be known source—since amended, I understand. as ‘Ceylon No. 1—A Paddy Bird from Ceylon’. Funds continued to 2. “The correct colours of the ‘nose’ stripes on the various 10 come in and three Vickers F.B.Ss at a cost each of £2,250 were (R.N.A.S.) sqdn. Camels were as follows:— further presented as Ceylon Nos. 2 to 4 with the respective names ‘A’ Flight black and White (F/Com. Carter) ‘A Devil Bird from Ceylon’, Ά Nightjar from Ceylon’ and ‘Flying ‘13’ Flight Red and White (Alexander) Fox*. ‘C’ Flight Pale Blue and White (Manuel, KIA 10/6/18 and "The British Government had announced that for each aircraft Coombes) presented and subsequently struck off cliarge, they would replace Photographs available show all three flights with this system of ilby a new aircraft. In practice this merely meant giving the name marking. to a new machine awaiting acceptance. Thus it came about, that 3. “The letters on the fuselage were Flight and not individual a c when the original B.E.2c was lost, the name ‘Paddy Bird from markings. Ceylon’ passed to a late production R.E.8. towards the end of 1918’ 4. "This letter took the form of distinctive designs on the canvas wheel discs shown in the photo above. 5. "It seems that the nose stripe marking of 10 (R.N.A.S.) Sqdn. ■toiiKlns Iiivuiler was unofficial, but permitted by the R.N.A.S. authorities. However, at about the time of the formation of the R.A.F., the squadron was co lo u r Kclu'inrw told to remove these markings which they seem to have done somewhat tardily as they still wore them as late as June, 1918. They were finally reverted to the official markings of single white vertical bars fore and aft of the roundel, and this in turn was replaced by a single white disc aft of the roundel. “ Later still the individual a/c letter system was introduced and presumably the wheel markings no longer employed. "In connection with the removal of the nose stripes a pilot of the squadron at that time has saia ‘We became very' busy’. Presumably the staflels considered that they could now assert themselves with this 'new’squadron—something not possible with their Mate’ opponents!" That “plain” aircraft Our reference to the Douglas A-26 Invader as a singularly plain aircraft was intended to prompt informative comment and no sooner had the February issue hit the news-stands than the letters started rolling in. Many readers describee! the same aircraft, and it is to P. Rowlings of Cottcridge, Birmingham, that we arc indebted for tl»c information sketched on this page. These Invaders were scon at Ringway during August, 1956. There was a line-up of six, and only one of them was "plain", being Midnite Blue overall with yellow serial, buzz number and

£"3 \ I s m May, 1958 263 aSBUlQfiQ

N in e n ew p l a s t ic s in a 3s. range, all about 7-in. span, have been launched by Frog and are to a very fine high standard. We are Trade particularly attracted by the de 1 lavilland Beaver (misnomered Type 20, actually the D.H.C-2), moulded in pale blue and with demonstrator Notes registration G-ALOW. Others im­ mediately available are the Short Sealand, Douglas Invader, Ν.Λ. Tornado, and to come, the B-47, Right: Precision s o l , l e r i n g i r o n B-52, B-66, Neptune and Packet. tcilh 3 spare bits All are original mouldings by Inter­ in foreground, at national Model Aircraft. Also added turised Hill Rx to the other, more detailed Frog hunt teeighs only range of l/72nd types is a super

the facility of using the iron on the field off a car battery, or at home off L cf 1· R i p m a x R / C wiuipniont as it mains. Irons are 25s. or 29s. 6d., should be display· according to type, bits 3s. or 3s. 6d., for tlealer and transformers 29s. 6d. or 37s. 6d. do nionstralion. The Rx js gaining We have been asked to point out great popularity , that the notice contained in the being easy to tunc Bctta Model Aeroplane Supply ami very reliable R.D.A. Unit con­ Company’s advertisement in our tains batteries and April issue to the effect that the bus red indicator II.M.V. Wright system radio control tig h ts shotting strilching o f relay units are out of production is com­ pletely untrue. We confirm that they are very much in production and Fairey Delta 2 kit, with droop snoot apologise for any inconvenience too, at 6s. 6d. caused by this irresponsible state­ There can hardly be a club in ^ Θ Θ Π Θ Θ ί ί ment. these isles that does not have at least These well-known units continue one member with a home-built Hill to be produced by Les Wright and 2-valver receiver, and now that the =ϋ :|Θ Θ ® Θ Θ ΐ Frank Bethwaite trading as Wright kit by D ockerty of the new minia­ Radio Control Ltd., and are being turised Hill, weighing less than © ® 0 © H r r t : distributed by Messrs. Scale M odel three ounces with an E.D. Polarised Supplies of Auckland, N. Zealand. relay, is becoming equally popular, Θ Θ Θ Θ ίΓ Γ ί We have checked out the Ripm ax there is a definite need for light­ Pathfinder radio control unit in­ weight, pencil point soldering irons. cluding the special R.D.A. (Re­ We have just completed our Hill ceiver Demonstrating Aid) which is Mk. 11 using the Precision C.220 A b o v e , latest trattsfer sheet by A. A. supplied to all appointed dealers. Hales includes five National Insignia— As will be seen from the photo this (number refers to mains voltage) id e a l f o r /lying scale. Relow: the KK iron as seen in the photo, and the Siuka fff. plastic Hurricane anil the unit is neatly moulded in Fibreglass difference in both time taken and Air/i.x Tiger .Moth all make up very and has a special recess for accom­ joint neatness provides ample justifi­ n ic e ly modating the receiver under test. cation for having one of these units Range tests on a standard receiver for radio work. Made by A.N.T.E.X. were very satisfactory, the standing of 3 Tower Hill, London, E.C.3, current of 4-4 m/a dropping to just there are no less than 11 different under 1 m/a at 500 to 600 yards types of iron to suit practically any ground range. Providing the tuning voltage, plus five spare bits of instructions are carefully followed various shapes, and two transfor­ there should be no trouble with mers for the 6- or 12-volt irons when sensitivity adjustment as has used off mains. It is certainly an occurred on earlier single valve advantage to have the latter, giving receivers of this type. 264 May, 1958

ENGINE ANALYSIS no The latest engine from one of Am erica’s leading manufacturers for Team racing, stunt or combat flying

by R. H. WARRING

B a s i c a l l y t h e F o x 29X lias been evolved from the choke when cold, if only to “degum” and free the engine. 29R and the Combat 35 engines, all parts being inter­ A ll the handling tests were conducted in particularly changeable with one or other of these models, with the cold March weather and may not be typical because of exception of the cylinder head. Unlike the 29R, however, this. It is a flattering point, however, that despite near­ the 29X adopts a conventional layout with normal freezing temperature no trouble at all was experienced in induction. getting the Fox 29X to hand-start on any size of The 29X is a sturdy, rugged engine with excellent propeller. smooth running characteristics and plenty of power. Good torque is developed at low speeds, without the Despite its high output it is an easy engine to handle, engine showing any signs of exceptional power output. is free from marked vibration except at very high speeds, Running is quite steady and consistent but the Fox and is also easy to start. sounds happier at higher speeds (10,000 r.p.m. and above). At speeds above 16,000 r.p.m. the performance The compression ratio appears fairly high and using was very steady, although there was a noticeable a doped fuel there is a marked tendency for the engine tendency to vibration. At all speeds the needle valve to kick back when hand starting, with increasing nitro- control is exceptionally non-sensitive, allowing plenty methane content. With 20 per cent, nitromethane the of time for adjustment. kick-back is quite noticeable, demanding a powerful flick for starting. Λ maximum of 10 per cent, nitro- Useful power peak methane would appear about the limit for normal Maximum power output on test was developed at operation with easy hand-starting without decreasing 14,000 r.p.m., and maximum torque at 10,000 r.p.m. the compression ratio. The 29X tends to run quite hot and unless properly Starting characteristics are exceptionally good, there cooled with an airstream performance is affected by being no tendency to falter once running. Starting when overheating (e.g. as could occur in a close cowl without hot deteriorates with straight fuel, but is again easy with adequate venting for airflow through). Fuel consumption a doped fuel. Due to the good suction, little or no is quite high, without being excessively so for an engine choking is required for starting—except for an initial of this size.

SPECIFICATION Displacement: 4-S96 c.c. (-2955 cu. in. ) A tax. BMP. 46 S otMJOQOr.ym Pore: *738 in. Stroke: -697 in. Bore/strokc ratio: 1-06 Hare weight: 7i ounces Max. B.H.P.: -465 B.H.P. at 14,000 r.p.m. Max. torque: 39 ounce-inches at 10,000 r.p.m. Power output: *095 B.H.P. per c.c. Power,weight ratio: *062 B.H.P. per ounce Material specification: Crankcase unit: light alloy pressure die casting Cylinder liner: alloy steel Piston: Meehanitc Connecting rod: machined from 24 ST 7.000 8.000 9POO tOpOO t/.OQO /^OOQlv'/^jOO /4pOO 15.000. f6,000 /7.0CO aluminium alloy Main bearing: Bearing bronze v R.PM. Crankshaft: alloy steel, surface hardened to Rockwell “C" ’58 Head: light alloy ^ ---- ; i - ■■ i ·. vv- Spraybar: brass Manufacturers: \ . _ i 'S Ϊ ·"· Ί ··■<·'·>■ vox Mfg. Co. Inc., 1 5305 Towson Avc., Ft. Smith, L Arkansas. U.S.A. ! i May, 1958 265 M a l e

P r o p e l l e r — R . P . M . F ig u r e s

Propeller r.p.m. dia. x pitch Ha sic components of 10 x 6 (Topflite) 1 2 ,5 0 0 the 29X shot* remark­ 12x4 ( T r u c u t ) 8 ,2 0 0 ably little out of the 10 x 4 (Trucut) 1 0 ,0 0 0 o r d i n a r y , yet the plain 11x4 ( I 'r u c u t ) 9 ,8 0 0 appearance belies the 9 x 4 ( I'rucut) 1 3 ,7 0 0 high performance ob­ Fuel used: 20% Nitro- SxS (Trucut) 1 2 ,2 0 0 tainable. Piston and methane, 50% M ethanol, 8 x 6 (Trucut) 1 4 .5 0 0 cylinder tire inter- 30% castor. 8 x 4 (Trucut) 1 6 ,0 0 0 changeable icith the 10x4 ( S t a n t ) 1 2 ,5 0 0 29H. but connecting rod 9 x 4 (Stant) 1 3 ,3 0 0 anti crankshaft are 9 x 9 (Stant) 1 0 ,4 0 0 longer on the racing 8 x 4 (Stant) 1 6 ,1 0 0 e n g in e S x 8 (Stant) 1 3 ,5 0 0 7 x 4 (Stant) 1 7 ,5 0 0

Constructionally the Fox 29X employs a light alloy drilled to take brass end pads. T o dismantle, the liner crankcase casting incorporating the cylinder barrel, must first be withdrawn and the gudgeon pin “fiddled” exhaust stub and induction tube, into which fits the liner out through the hole in the rear of the crankcase casting, capped by a light alloy head. The only machining when the piston falls free and the con rod can also be operations on the casting arc drilling through the removed. The latter is machined from light alloy stock induction tube (and inserted main bearing shell), and is of substantial proportions. reaming the main bearing for the bronze bearing shell, The head has an annular recess to fie the liner Mange, and the barrel reamed to fit the liner and the top faced, into which is fitted an aluminium gasket. Compression drilled and tapped for the head screws. ratio can be adjusted by removing this gasket, or adding another, if required. 'The head is contoured with a cross The liner is fully machined from leaded steel, turned, reamed and honed internally and ground externally to slot to match the straight deflector on the top of the a plug fit in the crankcase casting. The top of the liner piston, and is of substantial proportions to eliminate is flanged and seats on top of the cast barrel with a thin warping or distortion. aluminium gasket under the flange. Forts are rectangular, The crankshaft is a massive unit, although relatively of large area and depth, and milled in the liner walls. short in length. It is machined from alloy steel hardened The bottom of the liner is ground away in a half-moon and ground to ]-in. diameter stepping down abruptly shape on the transfer side, presumably for con. rod at the end of the bearing length to a J-in. diameter clearance since the cylinder is slightly de Saxe. threaded length. The port is rectangular, approx 1 in. x in., drilled, milled and possibly finished by broach­ The piston is fully machined from a Meehanite billet, ing. The central hole through the crankshaft is i£-in. ground externally, ami is a beautiful job lightened to diameter. The crank web is machined away to provide logical limits. The gudgeon pin is &-in. in diameter, counterbalance and the Λ -in. crankpin ground to finish May, 1958

Outstanding plain-bearing, pressure-fed racing engine with a potential performance above most other engines of similar size

T he 29R is a unique design of racing engine which you will either drool over if you are an out-and-out speed control-line fan, or regard as an extremely irritating and F O X 2 9 X (continued) highly unnecessary piece of machinery. This racing Fox is undoubtedly a very powerful engine—with a potential (unusual in American engines). The crankpin is also performance probably far and above most other engines drilled out 120 in. dia. The main bearing is a bronze of its size. sleeve force fitted into the crankcase casting. All the running fits arc exceptionally good. It is We say “potential” because in our experience, operat­ obvious, in fact, that considerable attention has been ing this engine can be a tricky—even frustrating— given to all the parts that really matter. There was also business. Starting is not a particularly difficult job, only far less evidence of roughness on the other parts than everything has to be just right, and whilst this can be in some other Fox engines examined. set up quite satisfactorily for bench-running tests, The intake tube is fitted with a sleeve, considerably operating the engine in a model could be quite another restricting the diameter, which would appear to indicate question. Consistent starting, we found, was a two-man that this model is intended for “stunt”, “combat”, team operation—one to flick over the propeller and one race (or radio) application. A somewhat enhanced looking after the fuel control. This engine is no toy and, performance could probably be realised for racing work whilst not exactly being frightening, is one which you with the sleeve removed, although no tests were made. treat with a certain amount of respect. It demands much Provision is also made for the fitting of a second more in technique than the average pen bladder pressure spraybar assembly for two-speed operation, by drilling fed engine. Yet having mastered the starting technique through the casting at the appropriate point. The needle we had no particular troubles—or qualms—about hand­ valve itself is ingenious in having a “spade” on flat near starting on a 7-inch diameter propeller. the end of the taper presumably to bear against the The basic difference between the Fox 29R and other inner diameter of the spraybar and eliminate any engines is this method of fuel induction. The engine is possibility of the needle point vibrating and possibly of the crankshaft rotary valve type, but the shaft opening upsetting the fuel mixture. In view of the extreme non­ and intake is so enormous that the conventional method sensitivity of the needle valve as a control, however, this of sucking in a spray of fuel-air mixture is no longer refinement hardly appears necessary—or may possibly effective. Instead, liquid fuel is poured into the intake be a major reason for the insensitivity. through a small tube located in the normal jet position, Summarising we rate the Fox 29X as an easy engine the rate of flow controlled by a needle valve mounted to handle, one without any apparent vices, sturdy and on the back of the crankcase. with an above-average performance for a plain bearing To get a satisfactory fuel flow the supply must be engine of this size. From the engineering point of view, pressurised—cither by locating the tank well above the too, it is exceptionally well fitted and a credit to the engine (about two feet is adequate) so that it flows under manufacturer’s techniques. gravity; or by using some form of pressurised tank, like a pen bladder. Larger than life Fox needle slimes the bearing end. also used to atomise fuel. Crankshaft comparison shows port differences Fox recommends a mixture with a very high pro­ between Slant and Hueing engines portion of nitromethane. We found a 50 per cent, nitro- methane proportion the maximum miscible with methanol and castor (without the addition of a mixing agent, like ether) and used this for our tests. This mixture appears very hard on glow plugs, so another very necessary technique would appear to be the selection, by practical tests, of a suitable plug for the actual mixture employed. No detailed tests were undertaken with the Fox because of the somewhat limited appeal of this spe­ cialised design but rough measurements of torque and speed over the range 14,000-18,000 r.p.m. indicated at maximum B.H.P. output somewhat in excess of .6 at around 17,500 r.p.m. which figure is probably pessi­ mistic as regards the maximum potential of the design. Duke Fox himself makes the point that the people who buy this class of engine will want to rework it, polishing the interior surfaces, etc., so he has concen- May, 1958 267

trated on the highest standard running fits. Certainly the engine “feels” very nice, with general freeness all ' FOX29R APPROX'POWER CURVE ' round and excellent compression seal. It is one of the " ’ | few glow motors, for instance, which you can effectively “hydraulic” like a diesel. The overall size of the Fox is quite massive, particu­ larly cylinder height. The design layout follows con­ . ! ventional “glow” practice, with transfer and exhaust diametrically opposed, the die-cast crankcase unit ___1______incorporating lower cylinder, exhaust and transfer and 2 / J AJ 16 17 18 /9 2 0 cooling fins. The cylinder liner is of leaded steel alloy PPM -THOUSANDS and a plug fit in the casting when cold. The cylinder is then grinds through the propeller hub face as soon as heavily de Saxe or offset relative to the crankshaft to any such movement takes place the serrations are filled relative the piston of side loading. The piston is of cast and grip destroyed. As a consequence the shaft acceler­ iron, ground with a “matt” finish for oil retention with ates away from the propeller and unwinds the prop nut. the appearance of a scratchy surface, but actually very Summarising, a lot of practical “know-how” has fine and smooth. It is different in this respect of appear­ undoubtedly gone into the development of this engine ance from the more expected “cross hatch” pattern with the achieved object of producing a really “hot” associated with micro-honing. racing engine. As we said at the beginning, if you are a After withdrawing the liner, the piston can be speed fan you will almost certainly fall for it, and get removed only by withdrawing the gudgeon pin first, a lot of satisfaction in experimenting with different which is done through a hole in the cylinder jacket. compression ratios and fuels, and internal polishing. The crankshaft is a huge affair, £-in. diameter stepping FOX 29R SPECIFICATION Bore: ·73ί in. down at the front to a 1 -in. N.F. thread. The crank pin, Stroke: -697 in. turned integral with the web, is 25-in. diameter. A Pkopkllhr—R. P. M. Figures Displacement: 4·806 c.c. tough connecting rod is machined from fiat alloy bar. •298 cu. in. Propeller r.p.m. Bore/Stroke ratio: 1-06. The crankcase bore (intake) is *360 in. and the inlet dia. x pitch Max. B.H.P.: approxi­ port cut in the wall in. long by ^ in. wide. The 8 x 5 (Stant) 16,500 8 x 4 (Stant) 18.000 mate figure 0-61 at timing of the intake port is quite normal, in fact it closes 8 x 6 (Stant) 14.800 17,500 r.p.m. somewhat earlier than most engines of racing type. 8 x 8 (Stant TR) 14.500 Bare weight: 9 ounces. 9 x 6 (Stant) 13.700 Power output: approxi­ We found the grip provided by the shallow knurling mate figure -125 B.H.P. on the prop driver marginal. Even when tightened the 7 x 6 (Stant) 18.400 per c.c. Powcr/weight rat io: very high torque generated on starting tends to acceler­ Fuel: 50% nitromethane, 25% approximate figure Ό68 ate the shaft away from the propeller and the knurling methanol, 25% castor. B.H.P. per ounce. m m

T he n o n -f l y in g scale model is a rare bird these days, but fortunately, a few adherents to this branch of the hobby maintain their characteristic high standard of workmanship. Rarely do we see such magnificent examples as our “Models of the Month” on this page, all made by Frederick Howard of Custom Craft, Denver, Colorado, U.S.A. Mr. Howard’s enthusiasm knows no bounds, and as he builds to comparatively large scales of in. or 1 in. to the foot, he is able to pile on the detail as these photos display. In Picture I we see his iVth Curtiss JN -4D Jenny. Between 1917 and 1919, over 5,000 of the training machines were built in the U .S.A . and many of them are still flying, some with the original engines, others with more modern power plants. Time taken to construct this model was no less than 1,100 hours, is a Pratt and Whitney Double Wasp CA15, 2,000 h.p. engine of World War II fame. T he actual engine is 3 03 inches diameter and 3-55 inches long, which gives one an appreciation of the extremely fine work involved in reproducing the engine cylinders. No. -'t is a 1/12th scale Great Lakes 2T-1A trainer produced during 1930 and powered with the American version of the British Cirrus IV in-line engine. Many of these aircraft arc still flying with various engines and are much sought after by home builders who like them for sport flying and aero­ batics. The model took 800 hours to complete. No. 8 is one of Mr. Howard’s collection of early aircraft, a Vi.th scale Curtiss Triad built in March, 1911. T his pusher was the first successful amphibian, the first machine using a retractable undercarriage and among the first of the practical hydroplanes. 1,400 hours went into this detailed model. Lastly in picture ·* we have a model to Mr. Howard’s own design of projected home built biplane, showing the cockpit detail and other work which took 1,000 hours to complete. Altogether this is a very fine collection and bearing in mind that this represents the first time we have heard of polio victims, only a small part of Mr. Howard’s work, we must making life considerably easier as aeromodellcrs acknowledge him to be one of the world’s most and we hope that this photo will give encourage­ fastidious aeromodcllers. ment to other unfortunates. Incidentally, Jay turns Photo <5 is of Maurice Doyle’s 108-in. span Sail­ out a model a day and that includes ten thin coats plane which he made for the 1956 Ulster Glider of paint on each model to give a superb professional Championships. Soon after this picture was taken finish. the model landed with the dethermaliser fuse still Team racing has been the subject of considerable burning and by the time its owner could reach the office correspondence in recent months ranging model all that was left was a charred and smoulder­ from the eligibility of the Delta to the more common ing wreckage. Take note you non-snuffing types! basic query “is it scale or semi-scale?”. This latter Apparently Maurice’s next model was to be entitled point is a very hard nut to crack, and we must “Snuff Said”. The remarkable thing was that admit that rate of degeneration in team race model although the accident is a comparative rarity, this design reached a new low during the 1957 season. was no less than the third occasion on which such a W e are all the more pleased therefore to show in model was extensively destroyed by fire in the picture 8 Mr. F. Turner’s Class A design from Belfast Model Flying Club—could it be the little Street, Somerset. This is one model we would have people at work? no hesitation in accepting as eligible to compete. Without the benefit of the National Health and The pilot has forward vision and is realistically Pensions Service, unfortunate people in the U.S.A. situated, the vertical tail surfaces are of full size afflicted with some disability or other are often hard proportion and the undercarriage of reasonable put to making ends meet, and whilst it is neither appearance and length. Moreover, it is of a reason­ the policy of A eromodelleb or this Model News able aspect ratio and has a completely cowled feature to emphasise such matters, we mention engine with no external fuel leads. How we wish same because in picture Tt we see Jay Frank Dial, that even 60 per cent, of the team race entries at a victim of poliomyelitis. Crippled by infantile the Nationals could boast tire same features! paralysis when he was nine years old, Jay is now The Sugden Special diesel has inspired many twenty-three, and spends his daytime working on aerontodellers to making their own internal com­ models of the Chance Vought Crusader, Cutlass and bustion engines and J. Denning of Durslcy, Regulus, which he is able to sell to the employees Gloucester, has gone one stage further and designed of the Chance Vought Company in Dallas, Texas. his own 5 c.c. diesel which we see in picture O. Jay’s enthusiasm for models and his avid reading of One of the outstanding features of this engine is the aviation magazines has given him an encyclopaedic bore of the venturi which is 11/32 in., and although knowledge of aviation affairs and his present at times rather tricky to start, it has good per­ collection ranges from a 1-in. scale model of the formance, notably 110 m.p.h. in a Class B team Stits Junior to a 28-in. Convair XC-99. This is not racer which weighs no less than 36 ounces.

9 m 13 270 May, 1958

© l 1® ® E.D. porting it should by rights improve with age. For price, the Japanese have labour cost advantage and the O.S. P et -099 1-6 c.c. at 33s. in Germany, 35s. in the U.S.A., 49s. in Canada and slightly more in Australia will be a stern glow- plug competitor for the world market. The only glowplug chal­ 1958 version of World fjf Championship lenge to the diesel in this capacity winning engine, the O.S. M ax-It 2Ji c.c. has been the K & B 09, but the has enlarged carb intake and minor Osaka Company has shown before internal modifications. I t h a s b e e n said, and certainly that it can match the U.S.A. in the case of one manufacturer product and with radial or beam quite truthfully, that all the mounting, small stature, light British model engine industry has weight, the Pet is likely to live up produced in recent years is a to its nomenclature. Also from finger stall. That situation is O .S. is the M ax 11-15, a new now relieved by the unheralded extra gulping carburettor is the introduction to the model shops most obvious change for 1958. of the E.D. 1-49 Fury during Henry J. N icholls loaned us March, and prospects of other one of the Fox 35 R/C Specials 1-5 c.c. units from elsewhere, with rotary exhaust control which including the blue-topped he has been importing. Tests now The Taifun HUeszard introduces stream ­ A.M.15 at 61s. 6d. concluded have proved to us tliat lining after the style of the Italian Atomatic of ten years ago. Helled Manufacturers have been in exhaust area control is safer, exhaust ports, tiein races anti re-ar reed a tough spot trying to improve on impler and more effective-than induction give it high performance existing designs to be able to all the throttles on engines with market an engine that could show standard porting. A K& B 35 an advantage either in price or with Bob Robert’s Vari-Speed performance. modification will go down to The Taifun Hobby, followed 2,800 r.p.m. and open suddenly by the A.M.10 with performance to 12,000 without quibble. Same equal to one-and-a-half times its engine with a throttle goes down capacity, led to new standards, to 4,800 on throttle and tends to and the Taifun Hurrikan has stall when suddenly opened— done little to help the situation as more of this later. far as British trade is concerned. In Germany the Ruppert twin We were therefore a trifle dis­ is to be made by W ebra and sold appointed to find the particular for approximately £.20. Gunter Bodemann, Webra designer, is Fury we tested turning 11,500 Electronic Developments Ltd. have on a 7 x 4 even allowing for its now with Taifun, making an been hatching the Fury 149 for many tight converging bore as yet to be alliance with designer Iloernlein, m onths, lias a cased-in rootl valve, ttoin races and maintains fam ily appearance thoroughly run-in. With two the outcome of which can only races, reed valve and standard lead to even better things than Cheap but good, the O.S. Pet 1.6 c.c. is the new-twin race, reed valve m a d e f o r th e J a p a n ­ 3 3 r /a Blizzard 2-5 c.c. by Hoernlein ese export market, special has just released at £4.Is. in Germany and has obviously rear ping been the subject of position and and which must surely take all considerable design rotary exhaust honours for eye-appeal. dovclaptnent to pro- t r o l v a lv e duoe the simplest Lastly, for the second month means of making running, we reproduce a picture a glow motor of the 5 c.c. Stunt “Glow Chief” engine (see heading) which cannot be produced fast enough by Gordon Burford in Australia to meet the heavy demand—surely an example to the many bigger firms in Britain that a little enterprise can be made to pay-off. May, 1958 271 M tm sa

A SAD ITEM of news for the majority of Home Counties modellers is that there will be no "All Britain” Rally this year at the Handley Pace Aerodrome, Radlett. The official explanation is that "it is only through extreme pressure of intensive test flying commitments that Messrs. Handley Page 0 u b flew s have mo9t reluctantly been obliged to withdraw permission for use of the airfield this year”. Naturally the organising St. Albans Club are not dropping the matter altogether—lifter all there are other aero­ dromes in Hertfordshire, but, of course, none of them offer the accessibility or facilities of Radlett. South Western EXMOUTH AND D.M.A.C. arc taking up Ρ.Λ.Λ. Load and hope to send a few members along to the Nationals. Anyone •«eking information on the 1958 Devon Rally should write to Dennis Baudet. 80 Moorfield Road, Withycombe, Kxmouth, Devon. W estern Everyone in the CHELTENHAM M.A.C. are looking forward to the Annual Easter Team Race meeting. The Club’s annual social was a great success and meetings are attracting greater attendance on the history of the club. It was Josh who LANCING AND D.M.A.C. members thanks to the more luxurious premises pointed out to me the little black shed near attended the meeting with one of those recently obtained. SOUTH BRISTOL the central control area at Ixindon Airport Spanish Car Control models taking advan­ M.A.C. got a 50 per cent, turn-out on which was once a wind break for club fliers tage of the wide open spaces and runways. Sunday flying meetings and in order to in pre-war years. The shed still stands after Apparently they were most successful. The recruit members and give helpful advice a all these years—almost as a memorial to cluo walking record Ikis gone to one member senior member is in attendance at the local those good old Fairey days. Club power and his sister who missed the bus at model shop each Saturday to help and champion is J. Bagulcy, Josh Marshall is Brocklchurst and walked to BcauHeu, advise. BRISTOL R/C M.A.C. gained its rubber and senior champion, and B. leaving Shorchnm at 6.30 a.m. arriving on first success in the Southern Area Com- Chapman holds the glider and junior the airfield 7 | hours later! P. Giggle was ctition at Beaulieu when D. Cole placed championship. BLACKHEATH M.F.C. third in open glider as the results snow, for rst with his A.P.S. Waveguide using the announce that the Bill White Cup is to be SOUTHAMPTON M.A.C., and this club Hill receiver. There is a revival of intcrc-st run on October 5th in conjunction with the holies to field as many as fourteen members in the BATH M.A.C. and new members usual glider contest at Chobham Common. in tire forthooming Nationals. Miss Mavis would be welcome at this club, one of the Entries will be taken on the field and flving Pepper has now taken over the Secretary­ oldest of British clubs which dates hack to Starts at 1 1 a m. EPSOM AND D.M.F.C. ship. 1909. tell me that their address for club meetings Scale R.T.P. events have now come to an L ondon should read The Depot, Hook Road, end in READING AND D.M.A.C. Overall Epsom, and I advise unattached modellers HAYES M.A.C. recently Ix k I a talk by winner is G. Bravey, and outdoor activities one of their older members. Josh Marshall, to go along and join up. One recent indoor start at R.A.F'. Benson, everyone concen­ meeting was the scene of a Concours trating on team racing. An exhibition is to D ’Elegance first three places going to the be held at the local Odeon for two weeks For Your l>iai’y Chairman, Secretary and Competition beginning April 7th with a view to recruit­ April 13th Secretary (!!!). ENFIELD AND D.M.A.C. ment. Weather was as ever of the "damage” Slope Soaring Rally. St. Albans M.A.C., have their exhibition planned for April 11th variety for Gamage date and winds won the Ivinghoc Beacon. and 12th, and will be running a film show battle at the BRIGHTON D.M.A.C. club April 20th of controline and indoor flying in the pro­ flying ground, broken wings being a true Surbiton Gala, Open Rubber, Glider and gramme. Compressed air indoor R.T.P. sign that any attempt to get airborne was Power, C hob ham Common, models will be displayed. During a recent hopeless. This club has a wide variety of April 27th club visit to the Beaulieu meeting, Jim interests from speed controline to radi· High Wycombe C/L Rally. Team Race Moseley left a Wcbra Mach 1 free-flight control and enquiries would he welcome at A, B, Combat. R.A.F. Booker. pylon model out on the briny and to crown J. Watts, 1 1 a Lyndhurst Road, Hove, May 4th it, packed his other model parts in the car Midland Area Rally, R.A.F. Wymeswold, and drove off leaving bis wings on the Loughborough. VfF All Classes, Class A aerodrome! Ray Tuthill managed to carry Team Race. C/L Stunt, Combat, Chuck off the Class B team race in the rather slow S.RI.A.E. Contests Gliders. time of mins. Date for Enfield Controline May 11th Rally is almost certain to be June 13th. but April 27th Stockport Express Rally, All Classes F/F until confirmed, we will leave this one out •Kcil Trophy; Team Power Area. Scale. Team Race. Combat Λ. V. Roe of the notes "For your Diary”. Κ.Μ.Λ.Α. Cup; U/R Glider. Aerodrome, Woodford, Manchester. June 15th Southern THE BRITISH NATIONALS Godaiming C/L Rally, Team Race. All Results of the Beaulieu Rally are as May 25th R.A.F. Watcrbeach. Classes, Combat. Godalming, Surrey. follows: Thurston Cup; U/R Glider. Juno 22nd Open Rubber Short Cup; I nternntional Class PAA-Load. Clwyd Slope Soaring. Opon. A/2, Tail loss 1. M. Fuller (Bristol Sc West) ... 9 : 00 Gold Trophy; Control lane Stunt. Junior, R/C. 2. A. Alexander (Cowley)... 8 : 55 S.M.A.K. Trophy; R/C "Multi”-Stunt. June 21-22 3. K. Ilorry (Bristol) 8 : 50 and Course, PAA Festival. Scotland, R_N.A.S., Open Glider Daviee Trophy Team Raco Class "A”. Abbotsinch. 1. A. Wisher (Surbiton) ... 8 : 01 Speed: Classes 1, 2 and 3. June 29th 2. 1. Harding (Oxford) 7 : 20 Combat: Heats. Northern Heights Gala, All Classes F/F. 3. r. Giggle (Southampton) 7 : 18 Combat. Concours d’Klegance, Queen* Open Power May 26th R.A.F. Waterbeach. Cup. A/2. R.A.F. Station. Hal ton, Bucks 1. P. Manville (Bournemouth) Sir John Shelley Cup: U/R Power. August 17th 9 : 00+3 : 42 Model Aircraft Trophy: U/R Rubber. Devon Rally, All Classes F/F, Combat. 2. Scarbrow (Croydon) ... 9 : 00 + 2 : 22 Super Scale Trophy: Free Flight Power R/C. Woodbury Common. 3. Straker (Springpark) ... 9 : 00+ 2 : 06 Scale. August 24th Class A. T/R Knokke Trophy: Control I-ine Power S. Midland Area Rally, All Classes F/P, 1. J. Templeman (Sidcup) Scale. Combat. R/C, T/R A & B. Cranficld. 2. S. McGoun (W. Essex) Ripmax Trophy: R/C "Rudder only” October 5th 3. Wells (W. Essex) Davies Trophy Team Race "B”. Bill White Rubber and Glider. Chobhom Class B. Team Race Speed: Classes 1, 2 and 3. Common. 1. R. Tuthill (Enfield) Combat: Final Rounds. October 19th 2. Whhebread (W. Essex) South Coast Gala. Ashdown Forest. 3. J. McNess (W. Essex) • Plugge CuP ** tt. 3 N ~ Smamaca 272 May, 1958

SuMex. There is talk of amalgamation cornered atfair with DERBY M.A.C. anr he has distinct weather advantages over between BRIGHTON and SOUTHERN ASHBOURNE also taking part, the latte the lads at home. The MODEL AERO­ CROSS, but I hope this does not come to lads carrying off the team race prize and NAUTICS COUNCIL OF IRELAND pass since local club rivalry always stimu­ Littlcovcr the first three places in Combat. have pointed out that the limit of insurance lates progress providing inter-dub events Λ six-course dinner was enjoyed by fifty coverage mentioned last month, should be are held. Littleovcr members and guests at the £5.000 and not £500 and further contests Sherwood Foresters Hotel, and plans are dates are as follows:— South Midland already made for activities in the forth­ May 11th: Irish Eliminators, 2nd round. Eighty-seven laps at 84 m.p.h. is claimed coming season including a full bus for both May 17th: Class A and B team races and by M. Reeves of the OXFORD METEOR the Woodford and Nationals. Combat is the combat, College Park, Dublin. M.C. in Class Λ team race, and he hopes for main interest in DUFFIELD AND June 22nd: Controline Rally, Butlin’s, improvement. We shall sec how well he D.M.A. AND E.C., but they would like to Mosney. erforms in the rallies and major contests, have more senior members. Local un­ June 29th: Controline Rally, Butlin’s, 'he A.P.S. Thermolist and Leprechaun are attached modellers are requested to contact Mosney. being prepared by other Oxford fliers for J. M. Ormc, Merrivale, 13 Wirksworth July 6th: Power and Glider, Phoenix Park. alope soaring showing trends towards bigger Road. Duffield, Dcrbys. A new club in July 19th: Class A and B Team Racers. gliders. STEVENAGE M.F.C. in the new Birmingham in the Hall Green area is known Baldonnel. town is a growing club with sections for as “THE MIDLANDERS”. It is exclu­ frce-flight and controline, having a local sively for seniors, sixteen years and over, Scotland field for the combateers which provides a and major interest is contest flying. The Scottish P.A.A. M.F. Festival ood attraction for bystanders. DE HAVIL- will take place on June 21st and 22nd at EAND (HATFIELD) M.A.C. ran a film N o r t h e r n The Royal Navy Air Station at Abbots- show in January and for those who are BAILDON M.F.C. had their annual inch, Paisley, with the usual superb prizes interested, the current list of B.P. films dinner and prize-giving at the end of by courtesy of the P.A.A. and the festival available from Shell Mex & B.P. Ltd., Shell February. Silvio Lanfranchi collected the w'ill be well worth attending. On Saturday Mcx House, Strand, London. W .l. offers Northern area knock-out trophy as Captain there will be 1 c.c. America Class and 2*5 c.c. a fine programme for a club show. Winner of the victorious team, Junior Championship International class, plus the Clipper Cargo of last year’s club championship was W. G. went to P. Rcnnison, Senior Championship for up to 1 c.c. P.A.A. events on the Winder, and the latest interest is in a to G. Cameron, and Arthur Collinson programme as well as unrestricted glider 8 ft. 4 in. radio control slope soarer. WAY­ collected the power trophy for overall best events and up to 3·5 c.c. combat. Sunday FARERS accepted a challenge by KENTON performance in the club and national events. is reserved for radio control, open power M.A.C. for a Combat tourney and the and rubber. Class A and B team racing. results was very well deserved, a draw IVortli W estern Further details can be obtained from Bob five-all. In the final deciding battle the Formed on the first day of this year, the Parsons, 8 Cunninghome Road, Prestwick, Kenton visitors came out top and Copeman LIVERPOOL AND D.M.A.S. now meet Scotland. with his Peacemaker and flying wing is fortnightly at the Liverpool Y.M.C.A. definitely a man to watch in the combat premises. Mount Pleasant. Liverpool, and P en P a ls circles this year. No less than seven cuts have a healthy membership of forty-two, M. J. Edden of 3 Goodman Cottages, were recorded in one five-minute period. but there is plenty of room for more. Smithy Lane, Lower Kings wood, Tad worth Interesting lectures have been given on Surrey, would like an American or Austra­ Dasl Λ ngrlia controline and radio, plus, of course, lian pen pal interested in frcc-flight power CAMBRIDGE M.A.C. gave a demon­ National films during the winter meetings and contest gliders, about 15 years of age. stration of R.T.P. flying with diesel scale and on the contest field K. Cain placed P. Walker of 426 Magill Road, Kensington models in the local Engineering Exhibition, second in the Area Winter Rally and Allen Gardens, Adelaide, South Australia, would highlight being a “ Baby” powered Provost Carter narrowly missed placing first in open like to correspond with a pen pal on frce- with a wide speed range, and outride the power, whilst Dave Thomas was also placed flight sport flying, al o.it 15 years of age. circle control. In the club outdoor events in radio control, so wc shall be hearing more Eighteen year old Trevor Ycador of John King came out top in the usual of Liverpool in the future. The big day of 12 New Park Row, New Park, Harrogate, Cambridge contest weather with strong cold the year in this quarter is the Clwyd Slope Yorks, would like to correspond with an winds at R.A.F. Oakington. NORWICH Soaring contest organised by the CHESTER American or Australian pen pal with views M.A.C. have the use of an old airfield in M.F.C., to be held on June 22nd at the on exchanging information and scale place of their usual flying ground at Hor­ South West Slope of Mocl Ffammau, controline kits. sham St. Fa’th, and have been enjoying reached by turning off the Mold-Ruthin Frank T. DeAngelo of 774 N.W. 52nd themselves in spite of strong winds. F. Road. Λ494, about half a mile past the Street, Miami, Florida, a very enthusiastic Robinson is the monthly winner with an Loggerheads. This turning will be clearly scale modeller of considerable experience, A.P.S. Shorty. marked. The best time of four flights is the would like to correspond with an enthusiastic scoring time. All members must have British scale modeller. M idland S.M.A.E. insurance. Fuse type d/t’s will not Michael Rubin, who is an extremely keen Details are now finalised for the Midland be permitted and the classes are for Open, R/C flier, having six models all with a Area Rally on May 4th at R.A.l·'. Wymes- A/2 Tailless. Junior and Radio Control. sub-miniaturised Hill receiver, would like wold and is for all classes of free flight, CHEADLE D.M.A.S. had their first club to exchange correspondence, engines, kits, class A, C/L T/R, chuck gliding, stunt and event on March 2nd for open and Λ/1 tape messages with his British equivalent. combat. Pre-entry is definitely required for gliders, where tubby junior Paul Gibson did He lives at 602 East Avenue, Elyria, Ohio, combat, send Is. 6d. to B. Saldcr, 28 Walnut very well, especially as he used an A/t in U.S.A. Michael strikes me as being a red Avenue, Alvaston, Dcrbys. For Class A, both events as the results show below'. Some hot keen r/c man. T/R pre-entry, send to R. Crofts, 12 idea of the excellent conditions can be made Pavel Limek of Hlouhctinska 20, Prague 9 Vicarage Road, Swadlincote, Near Burton by the fact that N- Garner lost his model Czechoslovakia, who can correspond in on Trent. Frce-flight pre-entries to A. 23 minutes out of sight whilst test flying. French, would like to contact a French or Peach, 104 Elmdale Crescent, Birmingham Open British modeller 31. LEICESTER M.A.C. arc like most other 1. L. Wbailey (A.P.S. Lucifer) ... 7 : 35 The CLUBMAN clubs, fully cognisant of the Hill Receiver 2. G. Jones (O.D. Lightweight) ... 7 : 01 virtues and a recent talk by Tom Comway 3. P. Gibson, Jr. (Club Λ/1 design) 6 : 53 \e w i lnhs and Fred Haxton enlivened the members A /l Event BATH M.A.C. further, pointing out how easy it is to make 1. B. Ύ. Faulkner (O.S. ex Wake­ G. Mealing, Redsills. this receiver and Itow to trouble-shoot the field) ...... 5 : 01 Northcnd, Batheaston, Bath usual modeller’s errors. When one can get 2. P. Gibson. Jr. (Club A/l design) 4:17 HR IE RLE Y HILL. a matter of 9 m/Λ rising current with 45 3. J. Grellin (Club A /l) ...... 4:14 J. Clegg. 116 Bret tell Lane. volts, who can possibly complain about the Brierley Hill, Staffs. reliability or sensitivity? 1 see in the Ire la n d GLASGOW REBELS M.F.C Leicester M.A.C. Club Bulletin there is a LARNE M.F.C. have great radio activities I. Findlay, 50 White Street, “for sale” notice regarding two substantial when their three moods, a Waveguide, Glasgow, W .l. high geared glider winches on model Junior 60 and R.6B. perform with great GOATSHEAD KNIGHTS (GATES­ supports standing 4 ft. 6 ins. high. Anyone regularity. BELFAST M.F.C. had a com­ HEAD) M.F.C. want one for a Leprechaun or Thermalist? bined film show and prize giving at the end A. Dempsey. 88 Claremont Stree t, The two LEAMINGTON clubs, and of February, which was enjoyed by thirty Gateshead, Co. Durham. EVESHAM D.M.A.C. also unattached club members and friends. Their contest LOWESTOFT Λ D.M.A.C modellers from SUTTON COLDFIELD season starts on the Saturday following B. M. Baldwin. 12 Rotterdam Road, visited STRATFORD UPON AVON AND Easter Sunday with a scramble event which Lowestoft. Suffolk. D.M.A.C. for their Nationals film show on is cut to 30 minutes to save those who are SOUTH DURHAM M.S. March 3rd. This will be known as the show out of training. Several F.A.I. power B. F. Gallagher. 7 Bulmer Place, that only just managed to take place, for the models arc “ rarin* to go” with the new West View, Hartlepool, Co. Durham. film arrived a scant half an hour before the rule types and J. Thompson has been THE MIDLANDERS show was due to commence. LITTLEOVER elected as a member of the Irish power team A M ENTHUSIASTS. M.A.C. h*. heir winter controline contest as he is reported as averaging 4 mins, 1). Day, 34 Newborpugh Road. at Burnas Vcrodrome, being a tri­ with an Oliver Tiger, flying in Italy, where Shirley. Solihull. Wnrks May, 1958 273 Γθ8&0β£)

PLASTIC ENAMEL THE BEST! fOt>»9W, Ί»ΛΜ. ·*»»*,_ JOY-PLANE BALSA CEMENT is very quick and hard o*j$* »v*ji rM **»«*. <*«**<»*»» »t«, setting, penetrates deeply and is oil, fuel and heat resisting. In three distinct types of tube: 6d., lO'.d. JOY-PLANF Ov-rt * j«U*Oft ίΑ* «-«V and Is. 6d. Long nozzle tube is ideal for applying >tictMn«w*(liUwuni>i «κιί in awkward places. 4irt AW·** u JOY-PLANE QUALITY PRODUCTS INCLUDE: CELLULOSE DOPES.— Glossy, all colours. Also Matt, *6* ΛΚΙ CiJiOV· *< O m« covov» n.or.c*»t> Black, White. Grey, Duck Egg Blue, Green, Brown. Balsa Tins lOid., 1/6, 2/9; A-pt. 4/6. CLEAR DOPE (Does not bloom). Tins 9d., 1/3, 2/-; J-pt. 4/-. Extra Strong Quality, i-pt. 5/-. PLASTIC ENAMEL RUBBER LUBRICANT, bottles 9d.' Cement PLASTIC WOOD, tubes I/-. Regd. GOLD FINISH (Cellulose and Non-Cellulose quality), IdeaJ for use on: tin s I/- , 2[·, 3/6; -pt. 8/-. SILVER FINISH (Cellulose and Non-Cellulose quality), POLYSTYRENE, WOOD, GLASS, tin s, 10 d. 1/6, 2/9; A-pt. 4/6. Cellulose Finish can be fuel-proofed. METAL. CHINA, PLASTER, PAPER, BANANA OIL No. I Thick. No. 2 Thin. Tins 9d.. CARDBOARD, Etc. 1/3, 2 /-; A-pt. 4/-. HIGH GLOSS WATERPROOF FINISH, bottles 9d. DRIES WITH A MIRROR LIKE FINISH Ά: Specialist in own label packing. Why not send us your packing problems by MADE IN TEN POPULAR COLOURS. ALSO writing to TURNBRIDGE LTD., LONDON, S.W.I7. BLACK, W HITE AND CLEAR 6d. per bottle. (EST. 1922). GOLD and SILVER 8d. M ATTING AGENT 6d. Luminous Paint lOJd. - Undercoat 8d. FOR FULL COLOUR RANGE ASK TO SEE COLOUR JOY-PLANE SHOWCARD TURNBRIDGE LTD., LONDON, S.W.I7 PRODUCTS

Plastic Kits From U.S.A. MONOGRAM (U S.A.) Skyray ...... 8/11 Midget Racer . 11/9 Corsair ...... 61- Ford Hoc Rod . 11/9 Swift ...... 61- Indianapolis Racer . 11/9 Spirit of St. Louis...... 61- Cadillac (I I ins.) ... . 3 0 /- U.S. Jeep and Gun . 11/9 AURORA (U.S.A.) U.S. Cargo Truck... 18/- Destroyer “Bcnyon" 9/6 U.S. Armoured Truck . 18/— Cruiser “St. Paul" 11/9 U.S. Amphibious Weasel 11/9 Subm. “Sea Wolf” 11/9 U.S. Guided Missile . 11/9 U.S.S. “Halford” 15/6 B.26 Invader ...... 11/9 U.S.S. "Forestal" 3 0 /- B.25 Mitchell . 11/9 U.S.S. “Saratoga” ...... 3 ° /- P.B.Y. Navy Catalina . 11/9 “ Black Knight” ... 8/11 Douglas D.C.3 . 11/9 “Silver Knight” ... 8/11 B. 66 Jet Bomber11/9 Milk Truck ...... 10/6 C. 47 Skytrain . 11/9 Gasoline Truck ... 10,6 IDEAL T.28 Navy Trainer 11/9 20-Ton Trailer 10/6 T.28A Army Trainer 11/9 TRLR with PW R Shovel 11/9 Ford Tri-Motor ... . 11/9 B.25 Mitchell ...... 3 1 /- COMBINATION Super G. Constellation . 11/9 B.26D Martin M. 3 1 /- Albatross Rescue Plano . 18/- Hellcat ...... 9/6 11/9 Tri-Pacer Sports ... Kaman H O K -I ...... * h Cessna 180 Sports 11/9 Texan 8 / - Here is the new E.D. Fury 1.49 ball Sea Breeze (15 ins.) 11/3 Sopwith Camel 8 /- Wanderlust (17 ins.) 11/3 race diesel and its perfect partner the Dipsy Doddle 11/9 "RENW ALL" BLUE PRINTS Calypso 50. For top performance in Guided Missile 18/- HAW K (U.S.A, power duration see this “ up to the Howitzer 138 Parts 361- Atlas Rocket (18 ins.) 2 4 /- A.A. Gun 134 Parts V><- Hawaiian Boat 60 h minute combination” at your Atomic Cannon 279 Parts 8 4 /- Graf Zeppelin (38£ ms.) 6 0 /- 32 in.s long local shop. Viscount ... 12/- Starfighter 12/- Thundcrjct F.84G •2/- ADAMS ACTION MODELS Calypso 50: 19/6 Jot Banshoe 12/- Atomic Missile 139 Parts 24/- Four Racing planes 15/6 Howitzer 142 Parts ... 20/- E'D. Fury: 79/- Mig. 15 ...... Minimum Post 1/6 Kit and engines available (-.wholesale) from LERNER BROS. 5, 7 and II GRAND ARCADE, TALLY HO CORNER, LEIGH-ON-SEA, ESSEX N. FINCH LEY, N.I2. HILIside 7531 ENGLAND

Kindly mention AERO M O D ELLER when replying to advertisers aatmsa 274 May, 1958 “AIRCRAFT CAMOUFLAGE ADD MARKINGS 1907 - 1954” Compiled by Bruce Robertson

The ' two reproductions Contents include 71 large photographs, are of 11 in. x8£in. pages in 80 drawings, and 52 sketches of Allied and Enemy FULL COLOUR of British, aircraft flown in the 1914-1918 War. Sopwith German, French and American 1 i-strutter and Avro 504K Serial Numbers. Camouflage, Identification and French Aircraft Identity and Representative Unit Serial Markings on 1914-1918 Markings. American Expeditionary Force War Aircraft. Squadron Markings. German Air Service Identi­ fication Numbering system 1912-1918. Complete schedule British Service Aircraft Serial Numbers 1-10,000. A.1-A.9999. B.1-B.9999. C.1-C.9999. D.l-D.9999. E.1-E.9999. F.1-F.9999. G.l-200. Also hundreds of individual aircraft serial markings. ALL 1914-1918 WAR!

Fully one third of this book is devoted entirely to Book contains 212 large pages llin . x 81in. all best quality white art the 1914-1918 war period. paper. Bound in stiff boards, gilt blocked. Weight nearly 2j pounds. Over 120,000 words. Over 500 illustrations, of which The Price is «/- 128 (20 full pages) are in COLOUR! From any W. H. Smith’s Bookshop or other Bookseller; or Model Shop or direct from the Publishers (Dept. Λ M4S) American and Canadian price is $7.50 DIRECT FROM THE PUBLISHERS. (Remit by personal check or International Money Order. Price includes postage, packing and insurance.)

Prompt and personal service For all who model, no matter where KITS ENGINES RADIO-CONTROL MATERIALS - BOOKS RAI)IO(0 !\THOL K ltU IftE S ★ C O N T E S T including FLTINCI Stinson L.I05 .. 28/6 ^ 5/8 Complete E.D. Outfits P. Tor Calypso Major... 29/4 i 5/8 T e-xan ... . 12/9 3/2 Boomerang ... £9/16/0 + 42/6 j P.A.W. SPECIAL ~2.49~| Calypso...... 16/4 + 3/2 Thr. Monitor 19/3 + 3/10 Mk. IV Senior £19/19/0) 85/9 0.3 B.H.P. at IS.500 r.p.m. C rosta...... 15/3 + 2/6 Jnr. 60 ... 45/-+ 9/- Thunderbird . 25/-+ 4/8 Mk. IV M ini... £16/16/8 F 72111 I Wt. 5ozs. Ball-bearing shaft. I Cranwell ... 6/3+ 1/3 Ladybird 18/4+3/8 Tiger Moth . 28. 6 + 5/8 Transited ... £10/10/0 + 45/6 , A wonderful engine £6/10/0 . Dab 34in. Glider 8/3+ 1/8 Luscombc 18/4 + 3/8 Toreador . 22/4 . 4/5 E.D. Receivers Eta Mk. V ... Empress A.2 ...24/9 + 4/9 Outlaw 22/6-1-4/6 Wasp ...... 10/6 + 2/1 Transistorised £5/0/0 + 21/8 £6/2/3 + 24/5 Inchworm ... 16/4 + 3/2 Pacer C/L IS/-+ 3 /- Mk. II £9/0/0 + 39/- Frog 0.79 c.c. ... 37/6+ 7/6 Voo-doo ... 18/—1-3/6 Piper ... 18/4 i-3/8 ' V E R O N including Boomerang ... Frog 2.49 B.B. ... 83/2+ 16/6 Pirate ... 18/4 — 3/8 Beebug ... £5/6/0-22/11 D. C. Rapier67/-+ ... 12/11 ★ F R O G including . 13/-+ 2/7 Mk. IV Mini ... £13/0/0 + 52/- Soarer Maj. 11/7+ 2/4 Cardinal . 15/6 + 3/1 Eta .29 Mk. IV £6/2/0 + 24/4 Aerobat 20/2 + 3/10 Southerner 60 4 0 /--8 /- Cirrosonic . 8/6 — I /8 E.D. Transm itter Frog 1.49 Vib. ... 45/9 ) 9/- Frog 45 25/- + 5/- Mk. IV Mini ... £7/16/0 + 33/9 Allbon Sabre Stunt Queen 2I/3 -, 4/3 Deacon . 28/9 + 5/9 Hand Trans. £4/2/0 f 16/2 ... 44/1 f- 8/6 ★ KEIL INCLUDING Fairy D 41/3+8/3 Allbon S. Merlin ...44/14 8/6 Bar5and it .. 18/4 ★ M E R C U R Y including Focke Wulf . 22/-4 4/4 E.D. Components Allbon Dart Mk. II ... 54/-+ 10/5 Bantam . 10/8 Aeronca 57/9 4- 11/5 Lavochkin . 26/- - 5/2 Escapement Mk. II or E. D. Bee I c.c, ... 46/6+10/1 Cadet ... 3/ll + IOd. Agressor .. 24/-+4/6 Midget Mustang 23/6 — 4/8 III ...... 19/—h 4/1 A.M. 10 I c.c. ...49/1+ 9/S Cessna 170 .. 18/4 3 8 Grebe . 12/44 2/5 Minibustcr 15/9 + 3/1 Clockwork Esc. . 48/-+ 10/8 Spitfire Mk. II ...44/1+ 8/6 Chief ... . 18/4+3/8 Mac ...... IS/-+3/- Nipper ...... M/6 + 2/3 Self-Cent. Rudder Mills 1.3 c.c. ... 75/-+ 14/5 Contettor . 17/6 3/6 Marauder 14/6 | 2/10 Panther ... 26/- 5/2 Mech. . 60/—l-13/- E.D. Hornet ...... 48/-4 10/4 Ezibilt Champ .. 12/6 4 2/3 Martin...... 7/9 -1/7 Philibustcr ... 23/64-4/8 TRI-ANG E.D. 2.46 c.c. ... 66/6 + 14/5 Skylon ... . 10 8 2 I Marvin . 16/-+3/6 Provost...... 8/-+ I/7 Crystal Cont. Trans. £ 6/10 0 E.D. Mk. IV ...... 66/6 4 M/S Soarer Minor 8/3 · I (7 Matador . 21/64 4/4 Sabre F 86E ... 26/-+ 5/2 Receiver £4,0 0 A.M. 2.5 ... 56/- | 12/6 Southerner Mite 10/8-2/1 Midge ... 4/11+ 1/5 Sea Fury ... 23/6-4/8 Radio Slave £ 6, 2/0 A.M. 3.5 ... 58/6 | 13/3 Phantom 18/4 3/8 Monocoupe 64 57/9 4 11/5 Sentinel ... 11/34 2/3 Double Pole Relay .. £ 1/ 8,0 Allbon Bambi ... 65/-4 12/6 Ladybird 18/4 | 3/8 Monocoupc 40 28/64 5/8 Skyskooter ... 26/-+5/2 Pacer C/L 15/- + 3/8 Monarch . 30/-+ 6/- Spitfire ...... 27/6 S/6 | PLASTICS by I NOTE. —Always available— Skyjot 200 7'6 1/6 Picadcr . 16/-+ 3/6 Vcrosonic ... 11/34 2/3 FROG, REVELL. LINDBERG, Best selected Solarbo, Hard Skystreak 40 10/8 + 2/1 Skyreep . 28/6 + 5/8 Vortex ... 19/6 · 3/10 | MERIT. e*.c., etc. S.A.E. brings | woods. Fuels, Tissue, Air Gipsy ... , 10/8 f 2/- Spitfire ... . 31/3 4 6/3 Wyvern ... 23/6 + 4/8 latest lists of all your wheels. Cements. Dopes Invader 6/3+ 1/3 Starflitcs . 4/- 4-9d. Tru-Flites each 3/2+ 7d. I favourites. i X-ACTO Tools, etc., etc ★ NO PoKCnASc TAX ON OVER­ ★ loco/ currency accepted. Full Official SEAS ORDERS. rates of exchange given. ★ A / / orders over 40s. from abroad ★ C . O . D . Postal Regulations permitting. ARTHUR IIILIIlifTool acknowledged by Air Mail. ★ O r d e r s despatched within 24 hours. icA ir Parcels to all parts at cost. 16 MEETING HOUSE LANE ★ G o o d s properly packed and insured. ★ Personal Service on all orders icSPECIAL ATTENTION PAID TO H.M. however large or small from B R IG H TO N f SUSSEX. E NO SERVICES. WRITE FOR DETAILS. home or overseas.

Kindly mention AERO M O D ELLEIl when replying to advertisers a May, 1958 275

* iM & d fo r thfr World Power Ghampi

British champions in every Held of* sport arc timed by Smiths British Stop Watches. It’s their split-second accuracy and extreme dependability that count. Remember, they are made by the world’s largest manufacturers of clocks, watches and precision instruments. They are sold by Jewellers everywhere.

C.20I 7 jewel 3 pressure, I/5th second stop watch. Ideal for use in sport.

INCH WORM INCIDENTS Since its introduction as Contest Kits first model, this design by M ick King has gone from success to success, and we take pleasure in giving some highlights in its history and comments by many satisfied builders.

“ I feel I must write and send my appreciation of an excellent Winner op All Britain Rally, Canadian Nationals, B. model marketed by you—the ‘Inch Worm’.” Anglian Area Gala twice, Flight Cup, Flying Training Com­ J. Upton, Wellington, New Zealand. mand Champs, twice, Pilcher Cup, R.A.F. Champs, twice, S.M.A.E. Cup, S. African Nationals, S. Counties Rally, “ I have built and flown your ‘Inch Worm’ and ‘Empress’ Watertown International, U.S.A. A /2’8 and find them exceptional performers even in the hands of a comparative beginner.” M. D. Lee, Bonham W o o d y Herts. COMPLETELY PREFABRICATED , n l/Z “All the construction points are very sound and the design ONLY exceptional.*’ D. R. Koelker, Washington, U.S.A. KIT. l" /0 “This job Iras won numerous club and inter-club events in addition to the Nationals,” B. Partridge, Johannesburg, S . Africa. IN THE INCH WORM TRADITION “From time of launching to disappearance, was one hour is the 24" Captain, thirty-five minutes and eleven miles in distance.” G. R. Mawson, Hereford. a beginner’s model / y that combines “ I find it easy to secure perfect thrcc-minutc flights and I am aware of an outstanding official flight of one hour thirty simple construction minutes.” S[Sgt. Lowe, Texas, U.S.A. with a really aston­ ishing performance. “The do-it-yourself towline clan have another member, Dave Thurber, who launched his ‘Inch Worm’ himself, paying All the parts are ready-cut. 3/11 out the line skilfully while trying to keep his footing in the knee deep snow. Montreal Model Flying Club Bulletift—January, 1958. CONTEST KITS LIMITED, LEIGH-ON-SEA, ESSEX, ENGLAND

Kindly mention AEROM OD ELLER when replying to advertisers aBBUOna 276 May, 1958

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X jO T only do wc wholesale Model Aircraft, Solid Models, Gliders, SID Ship and Galleon Kits and Ship in Bottle Kits, but we sell the very much wanted Kenhnc Wagon Body Kits, Road Transport THE MODEL AIRCRAFT SPECIALISTS Kits, Modelcraft Lincsidc Kits, Plasticine Kits and materials, Send 6d. for M Y 1956 LISTS Solarbo Kits and the grassiest green flock paper. Plastic OO Fence PLASTIC KITS Alien-Mercury 35 ... 71/8 —Gates, Hedges, Telegraph Poles and two Kits of Trees. N E W R E V E L L KITS E .D . Boc M k . II ...... 54/9 P.T. Boat 8/11 E .D . H o rn e t 1.46 c.c. ... 55/11 Plastic Construction Kits made by Vulcan, Bell, Gowland, Destroyer ‘‘Sullivan’' 12/11 E .D . Racer 2.49 c.o. ... 79h Lindberg, Kleeware, Guiterman and Randall. Also Fretwork, F reighter ... 15/6 N E W F ro g 2.49 c.c. 94/t Carpenter’s Tool Sets, Meccano Type Construction Sets, Chemistry Ford T ru c k 8/6 F rog 80 ... 4 5 /- Ford Fairlanc 9/6 Allbon Merlin .76 ex. ... 43/10 and Electrical Sets. Taycol Electric Motors, Microscopes, Painting O il T an ke r 15/6 A llb o n S. M e rlin ...... 52/7 by Numbers, Copper Embossing Kits, Steam Engines, Magnets, M isso u ri ... 17/6 Allbon Spitfire 1 c.c. ... 52/7 Morse Sets, Playstics, Philmar Sets, Marquetry Sets by Binnacle B.52, B.47. B.36 ... ea. 8/11 Full stocks of all the p opu la r and Allen Wright, and Modelcraft. Veneers, S. and B. Railway N E W A I R F I X KITS engines available. Equipment, Humbrol Railway colours, Master Modeis, Handicraft Tiger Moth. Hawker Hart. Stuka SECOND-HAND ENGINES 87, and lineside buildings all at E .D . Bee, S. M e rlin , M ills .75. all Brass ware. Math. Sets. Rules, Dividers, Upholstery materials, 2 / - each. at 35/- each. E.D. Hornet, Sabre, Iron leaves, Brass, Aluminium, Tinplate and Fibre Sheet. Wire of MEW FROG COMET KITS Elfin 1.49, all at 37/6 each. E.D . every description. Doll’s House Fittings and Papers. Passe Partout, D . H . Beaver ...... 3 /- Hunter, A.M.25, Manxman 3.5 Paper Kraft, Lampshade Parchment, Plywood, Cane Bases and S h o rt Scaland ...... 3 / - at 42/6 each. E.D. Racer at 50/-. Cane. Raflia, Wood Balls, “Make It Yourself Kits”, Rubber and Viscou nc ...... 14/6 Send for S/H Pri#e List. I PAY Invader, Tornado ea. 3/- Plastic Moulds and all materials: E. D. Engines, Radio Control CASH FOR GOOD SECOND­ Britannia. D .C .7 ... ca. 17/6 HAND ENGINES. and all spares. Britfix and O’My Cement and Dopes. Brass, Alumin­ Fairey Delta II ...... 6/6 ium and Copper Tube. Rigid Celluloid tube. Rubber Bande, Aero COMET SERIES SCALEXTRIC Rail Race Car Rubber strip and Catapult Rubber. Transfers, Glass Paper, Rawl- B.52 Stra to fo rtre ss ... 3/6 sets now in Stock from £5/9/6 B.47 Stratojec ...... 3/6 Send for E .D . R A D IO C O N T R O L . plug Products Brass and Steel Wood Screws and Screw Eyes. B.A. Price Lists Free. Screws in Brass and Steel, Ch. and Hex. Head. Ail Model Aircraft D o u g la s B.66 ... i.. 3/6 AMERICAN MONOGRAM CONTROL LINE KITS and Ship Accessories. Books and Plans. D.C.3 twin jet bomber, Skytrain. Mercury Mk. II Spitfire 37/6 It is really worth while sending for our latest catalogue. We are A ll at 11/9 each. P.5I Mustang 32/6 Wholesale only. Modellers please don’t ask us for our Wholesale KcilKraft Hurricane Mk. 2c 4/9 T o re a d o r fo r 2.5 to 3.5 26/9 ENGINES M o n a rch fo r 2.5 to 3.5 36/- catalogue. Go to your Model Shop. A lie n -M e rc u ry 10 ... 58/6 Kcil Joker for 5 c.c. 11/5 Alien-Mercury 25 ... 66/6 Ranger Class A team racer 12/9 FOR FULL RANGE OF MODEL AIRCRAFT AND ACCESSORIES SEND ATLANTIC MODELS FOR KEIL. VERON. MERCURY ILLUSTRATED PRICE LISTS FREE. 22 CASTLE ARCADE 335, B R A D F O R D S T R E E T , B IR M I N G H A M , 5 Phone: 29065 CARDIFF

RADIO & ELECTRONIC PRODUCTS New.' Newn New.'.'.' G. Honnest-Redlich MERCURY PICADOR STUNT/COMBAT 8 Station Parade, Sheen Lane, Mortlake, S.W.I4 F O R 1-1.5 c.c. 19/6 Telephone: PROSPECT 9375 SKYLEADA SATELLITE CLASS “A” Carrier single channel transmitter unit TEAM RACER 24/6 "A Printed Circuit addition to the R.E.P. range” KEILKRAFT STUKA FLYING SCALE Pretuned to G.P.O. R.C. band. Complete RUBBER POWERED 4/2 component packago includes printed Circuit, all Resistors, Condensers. Valve holder and Flex. P r ic e less D . C .C . 90 valve, 18/6 Run by modellers for modellers, complete stocks of all that is best in aeromodelling. Here are some of the most Aeromodeller single-channel transistor interesting items . . . receiver ENGINES N E W l C o n t e s t : Ripmax Pathfinder C a ly p s o C u b 13/6 Component package includes: I valve, 2 transistors. 4 condensers. V e c o 19 13716 Receiver 119/6 C a ly p s o 19/6 5 reristors, I F.F choko, flex, wiro. sleeving, drilled and prc-asscmblod D . C . R ap ie r2 .5 79/11 Ripmax Mactuator Calypso Ma^or 35/— panel complete with coil formor, valve and transistor holders, and P ro s 2.49 M o d . 94/9 23/10 potentiometer. Price 62/- F rog 1.49 V i t r o 5 6 /- CONTROL LINE Frog 80 47/6 KITS M e r c u r y : “Transmutone” multi-channel transistor Eifflaondor 2.5 130/- Eca 29 Series V 146/4 FREE FLIGHT T o re a d o r 26/9 receiver Alag X-3 2.5 75/- POWER M arv in 19/6 M u sta n g 32/6 Component package includes: I valve, 2 transistors, 8 condensers, Α.Μ.Ι0 58/6 M e r c u r y : A.M.25 68/6 M agn a 13/3 Spitfire 37/6 5 resistors. I RF choke, flex, wire, sleeving, drilled and tagged pre- M o n a rch 361- assemblod panel complete with coil former, valve and transistor A.M.35 71/8 Matador 25/10 holders and transformer. Price 82/- A llb o n D a r t .5 64/5 Acronca Sedan 69/6 V e r o n : Engine Tost V e r o n : C o m b a te e r 28/2 Stand 12/11 Deacon 34/6 K e il k r a f t : “Modulation unit” C a rd in a l 18/7 Elmic Universal C h a m p 12/9 Component package includes: valve, transformer, all condonsors and T im e r 15/- Fairey Delta 49/6 resistors, tag scrip, wire, socket and drilled pre-assen b ed chassis 38/- All Loading Rubber, Impellers for above C o n t e s t : Glider and Jctex Kits 7/6 Combat King 22/6 -fa A full range of engines with throttle control to suit RC in Stock. (State Engine) V o o d o o 2l/9 m o d e ls . Return of Post Service, please add postage Prompt Mail Order Service. -fr S.A.E. for price lists and information. THE MODEL SHOP 6-rood tuned relays ... 6 0 /- 8-reed tuned relays ...... 7 0 /- ”Uniac” motorised actuator 45/- “Spoodiac” motorised actuator 30/- 13 BOOTLE ST., MANCHESTER 2 Rclays from ...... 22/6 F.R. Clockwork Escapomcnt ... 35/- Telephone: Blackfriars 3927

Kindly mention AEROM OD ELLER when replying to advertisers May. 1958 277 ΙΘΘΒΟϋθϋ)

OAMAGES How-to-do-it Present this 1 ear's Out-O-Door Xorelti/ Magazine ofU.S. REVOCOPTOR ROTOR PLANE Modeldom W ill provide hours of fun in the park and on the beach. I5£ inches long. Complete with two rotors, long line and line Read FLYING MODELS, the only American magazine devoted exclusively to model aviation! Every Issue includes how-to- build data on new model airplanes of various types (with full-size plans wherever possible) . . . worth-while hints. . . photographs ... how- to-do-it information . . . and features for sport a-plenty! MONOGRAM PLASTIC KITS Now published every month to arrive in this country . . . Annual subscription: (12 copies) £ 1 9 6 MONOGRAM

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a n d !s shipped all round the O P A R A G U A Y © SOUTH AFRICA world to satisfied clients MASTER Θ A R G E N T IN E Q IN D IA — in metric and English © PORTUGAL 0 AUSTRALIA DETECTIVE sizes. Let us quote you O YUGOSLAVIA 0 N. ZEALAND for your balsawood SEE FOR YOURSELF Θ THE CONTINENT requirements.

Trodc price lists on application to Sole Manufacturers and Shippers BUY A COPY TODAY E. LAW & SON (t i m b e r ) LTD. 272-274 HIGH STREET. SUTTON, SURREY * VIGilant 8291-2

Kindly mention AEROM ODELLER when replying to advertisers KKEBSULB'jO 278 May, 1958 HSSBS® Tel.: EAL 8978 BARDSLEY’S 263 HIGH STREET, BRENTFORD Spcciarising in E.D. Engines Running-in and Testing Facilities Mail Order Service Available Special Turned Parts to Order

MODEL SUPPLY STORES 17 BRAZENNOSE STREET. MANCHESTER 2 Manchester’s Main "M e cca ” for every make of KIT. ENGINE & ACCESSORIES. Solarbo, BALSA. etc. Northern SKYLEADA Factory

HOWES MODELS CENTRAL AIRCRAFT B. CUTTRISS & SONS CO., PTY. 9-10 BROAD STREET S PRINCES WALK MODELS AND HANDICARAFTS MELBOURNE, C.l 49-51 CLEVELAND STREET Everything for the Modeller Australia's M ain Distributor for: ” Acromodcller” , "Model Maker” and Call and see our Shop their Plans Service. Tel.: Shirley K.MlilUU 5854 HOWBEL MODELS A. J. REEVES & CO. CALEDONIA NEWBOROUGH RD., SHIRLEY, SOLIHULL Agents for all leading Kits, Trains, Engines (B’HAM) LTD. MODEL CO. and Radio Control Model and Precision Engineers 416 M OSELEY RD. 12 W e have a “FREE” model advice and 5 PITT STREET, C.2 Specialists with a world wide reputation instruction class every Thursday 6.30 engine AIRCRAFT. BOATS, RAILWAYS Our works at your service for to 8 o’clock to all purchasers of Kits and accessories. Radio Control repairs, rcbores ond rebuilds. over 15/- in value. By return postal service Everything for beginner and enthusiast. KeildM a» fc'.: BIRMINGHAM Guildford 2274 GEORGE WEBSTER HORNTON’S PASCALLS (St. Helens) LTD. (Models and Toys) Ltd. 32 STEPHENSON STREET, BIRMINGHAM 2 MODEL SHOP CORPORATION STREET, S T . H E L E N S (Facing Stage Door of Theatre Royal) 105 W O O D B R I D G E R O A D . & I NAVIGATION ST., BIRMINGHAM 2 GUILDFORD ALL LEADING AIRCRAFT KITS AND (adjoining Queens Hotel) ACCESSORIES. X-ACTO TOOLS. PLASTIC The shop devoted entirely to scale models Stockists of Model Aircraft Railways CAR AND PLANE KITS. BOAT KITS of all kinds. Kits— Materials— Accessories ______and Sh ip s______CEBBBSBE» gs, RAWCLIFFE’S RADAR CO., LTD. CRAMER’S The Hobby Haven o f West Herts. FOR M ODELS 2 OBSERVATORY ROAD TSIN SHA TSUI. KOW LOON 172a High Street, W atford 38 W HALLEY RANGE, The most complete stock of acromodclling BLACKBURN Near Watford High Street Station and hobby supplies in the Far East. Run (Bakerloo). full stocks of all that’s MODEL BOAT KITS by an experienced modeller. Agents for new— special acromodclling section on AIRCRAFT KITS Solarbo. Brit fix and Sole Agents for O.S. first floor. Fishing. Trains, Boats, Games ENGINES & ACCESSORIES engines and radio control equipment

m s m B E E B E ® m ROLAND SCOTT MODEL AIRCRAFT J. J. BRADBURN SUPPLIES LTD. 76 MARKET STREET The Model Specialist 171 NEW KENT ROAD, S.E.I Extensive stocks. Experienced Modeller 147 D E R B Y S T R E E T The oldest established aircraft shop in in charge. Specialists in Radio Control. The obvious shop for all Model Aircraft London. Service with satisfaction Nothing is too much trouble. Try us Requirements and see!

Γ»ΤΤ3ΒΚ !» ΐ· ΙΜ Td··66399 LMliEBI T' ,:M D 8 8 2 7 ·8·9 MHSEIIBEI 7662 HAND CRAFTS A. J. JEX 31 BONDGATE, DARLINGTON BURLEIGH’S 13 SOMPTING ROAD COUNTY DURHAM 303 EDGW ARE ROAD, W.2 Boats, Model Railways, Aircraft THE MODEL MAKERS’ PARADISE Model aircraft specialist. All types of Everything for the Model Maker engines, kits and accessories stocked, by BURLEIGH of Edgware Rd., Ltd. return postal service. also at 54 Gorgie Rd., Edinburgh May, 1958 279 SSB1ULB0

-----C L A S S IF IE D A D V E R T IS E M E N T S — B O O K S — Continued Sailplane and Gliding—published every month. Send stamped addressed P R E S S D A T E f o r is s u e J u n e , 1958, A p r i l 20, 1958. envelope for descriptive leaflet; or 2s. for current copy: or 17s. for a year’s ADVERTISEMENT RATES subscription to British Gliding Association, Dept. A, 19 Park Lane, London, W .l. Private Minim um 18 words 6s. and 4d. per word for Illustrated Catalogue No. 13. Containing over 450 items of Government each subsequent word. Surplus and Model Radio Control Equipment, 2s. Post free refunded on Trade M inim um 18 words 12s., and 8d. per word for purchase of goods, 2s. 6d. overseas seamail. Arthur Sallis Radio Control each subsequent word. Ltd., 93 North Road, Brighton. Phone: 25806. Box num bers are permissible, to count as 6 words when costing Aircraft of the Fighting Powers, Vols. Ill, IV. λ', VI. VII. Book of Westland the advertisement. Aircraft, Hook of Miles Aircraft. Perfect condition. Best Offer. S.A.E. CO PY and Box No. replies should be sent to the Classified Box No. 544. Advertisement Department. The "Aeromodeller", TRADE 38 Clarendon Road, W atford, Herts. Ex-Government Stop Watches. 45s. Illustrated leaflet on request. F O R S A L E Charles Frank, 67-73 Saltmarkct, Glaskaw, C.l. New Taifun Tornado and Webra Mach 1 Ball race 2·5 diesels, 58s.; Elfin 240 PB Radial. 38s.; Merlin -8. 30s.; Frog 100, 18s.; Glow-plug McCoy 20, 78s.; Super Tigre G 20S Lappa to or Ringed, 45s.; OK 15, McCoy -040, Thermal Hopper -049, 35s. each; New Monoline handle. 5 c.c. Speedmaster and Spiral Cam units, wire, 42s.; Jap KSB Super Timer, 18s. 6d. Ready G I G EIFFLAENDER r e b o r in g s e r v ic e to fly Jap Tony C/L (Enya 10), £5; D.C. Chipmunk (Merlin -8 c.c.), £2; Arrow Active tree flight (Allhon Spitfire), £7 10s. Box No. 548. FIELD BANK, CHESTER ROAD, MACCLESFIELD REBORES: BEES Series I and PB ELFINS, 14/-, HALF REPLIES TO ADVERTISEMENTS should always be accom ­ c.c.s, 20/-. OTHERS 18/-, except those under .46 c.c.s, panied by a stamped addressed envelope in the event that which are 22/-. Prices cash with order. Return postage free the advertiser is unable to accept your offer due to prior C.O.D. service 2/- extra. SPARES stocked and fitted. purchase, sale or exchange. ENQ U IRIES S.A.E. please for immediate attention. PROMPT SERVICE with 30 days’ guarantee. W ELDING carried out at owner's risk only. W e do not bore ringed motors. R.C. Junior 60, 1C.I). 3-46, £5 10s.; Darts, Mills -75, Elfin 1-40, 35s. each; Racer (reed, glow), 45s.; .Mach I, unused. 110s. All excellent. Thundcrbird ETA 29, 85s. A e k OMQDF.LLERS, 1948-1958. other model mags. Will part exchange for model cars and equipment. Crowslcy, Mill Hill, Kdenbridge, Kent. Frog 500, Spitfire 049, Cub 049B, all good. Scientific “ Mustang" kit. Offers* Exchange Elfin 1-49 “Midge”, Alag 2-47 C/Liner for good American “•19". Haigh, 8 Gainsborough Avenue, Worthing, Sussex. Two O.S. Max-35's. Latest 1958 model. Brand new and unused in TRUCIJT maker’s boxes with instructions, two venturis and dust-Plug. Customs paid. £6 18s. 6d. each. Box 545. Oliver Tiger Mk. II, £3 (rebored); (Mk. Ill Preworked by Olivers.) PRECISION £6 10s.; Eta 20 Mk. IV, £4; E.D. 2-46, £2. All in good condition. Enya 29-3, £6 10s. Brand New. Box No. 547. Two Superb Fox 35 G.P. motors not vet run in, £6 15s. each. Box AIRSGREWS No. 546. Completed Wavemaster with E.D. 3-46, flywheel, etc., and clockwork actuator, less receiver, £7 10s., in good condition. Bishop, 103 Nelson Road, Whitton, Middx. — 4,I bet lhat’s a 1,000 feel!” — Several perfect American motors. Glow, petrol and jet. Call evenings or write for details. 54 Lebanon Court, Twickenham. Confirm that statement Chum. Get an ALTMASTER Two AM. 35’s, one tuned, one new. E.D. 2-46 super tuned, 45s. each. Clipstonc, 41 Taunton Way, Stanmorc, Middlesex. The precision height recording instrument which tells you the maximum New un-run Oliver Tiger Mk. Ill, two B.B. Amco’s, good condition. height from point of launch, can work a D.T., drop chutes, etc., and Excellent Torp 19. Oilers: A. Osmond, 7 Streamside Walk, Southcourt. weighs only 0.45 ounces. Be the first in your club with an accurate Aylesbury, Bucks. height recorder. Price 25/-, cash with order from 24-in. High Speed circular course racing model Hydroplane, powered by I KENLAND RESEARCH, 4 Stratford Way, Boxmoor, Herts D.G. Wildcat 5 c.c. diesel engine, capable of 40 m.p.h., £6 10s. Bargain. R. Strinati, 4 Soho Street, London, W .l, evenings after 7 p.m. Frog 500 G.P. Motor. Good condition, bench run only, 45s. o.n.o. D. Sibley, 97 Pettits Lane, Romford, Essex. ECC Transmitter. Receiver. E.D. Escapement for quick sale, £5 10s. ENGLAND’S ONLY AERO BOOKSHOP E. D. 3-46, £2. Allbon Spitfire, 30s. E. Walker, Malthouse Cottage, Hythe, Southampton. | · M O D E L Open all day Saturday only. 30.000 Controlinc models, engines, as new, wood, books, etc. Many other items magazines in stock. 5,000 Aero books. for disposal. 3 Portal Grove, Denton, Manchester. 1 · TECHNICAL Send 3d. for 14-page list. Brand new Thiinbledrome space-bug, £3 5s.. or offers. Whitfield, Ogilvic i | · REFERENCE 2a RIDGE AVENUE House, Crieff, Perthshire, Scotland. W INCHMORE HILL | · HISTORICAL Veron Focke-Wulf E.D. 3-46 powered. 50s.; K.K. Skystreak 40, E.D. L O N D O N - - - N . 2 I 3*46 powered, 50s.; excellent condition. Skystreak 26 kit, 7s. 6d., unopened. E.D. Bee Mk. II. bench run only, 35s. Books, tanks, spinners, etc. K K | BEAUMONT Zipper hydroplane, £1, beautiful model. Send S.A.E. for further details, i R. VVcathcrill, 31 Stray Park Way, Pengcgon, Camborne, Cornwall. Brand new X-acto Burlington Hobby Chest, excellent condition, £2 10s. Allbon Javelin diesel with all accessories, £1 15s. 1 Molcsworth Avc.. A REAL MODEL SEARCHLIGHT Stoke, Coventry. that really lights. Fitted with Bulb W ired. Front E.D. Radio ControlUnit. less escapement and Ariel, Rudder Bug, Books, Lens. Swivels all ways. Polished Mirror, Alu­ Plans, all good condition, £10. Telephone: Ipswich 81216. m inium finished. Lightweight Material. Price 9'4. P. & P. 6d. H AN DRAIL SUPPORTS to match, WANTED sold in packets of six. Price 3/9, P. & P. 3d. Wanted urgently. “Camouflage 14-18 Aircraft, copies of Air Trails and Air Stores. Also Max Immclmann. Flying Minnows, Knight of Germany CHALLISS PRODUCTS LTD. Height IJi'ns. —Oswald Boelckc. German War Birds, Richthofen—Red Knight of the Air, WOLSEY WORKS. 2-3 W0LSEY MEWS. Working War Birds, Flying Fury, Days on the Wing, etc., etc. Details, prices to GAISF0RD ST., N.W .5 Tel.: GUL 1666 voltage 2-5. Box No. 543. A Palmer Thundcrbird or Aldrich Nobler plan or new kit. Please state price. All replies answered. Oakley, 59 Sandy Lane, Bramcote Hills, Notts. For private collector. Not for rc-salc. No dealers. “Air Trails", "Model ^ue A'V. Timm semes Airplane News”, “ Flying Models", in almost any condition. Also Wvlams C O M P E T I T I O N W O R K ? Then you need your engine Master Plan Book, Vol. I. Aviation Magazine 1-60, any photos, plans, silhouettes not published or printed in this country. Inter-Services Recogni­ reworked by us. tion Journal. Replies Ml ST give details and PRICE. P. A. Tillev, Flat Cost: I c.c. to 3.5 c.c. 15/-; 3.5 c.c. to 10 c.c. 20/- Three, 27 Coolhurst Rd., London, N.8. F LA SH .— E. S. Arkinstall of New Zealand 3rd place in the Nationals BOOKS with his A.V.-tuncd Super Tigre engine. American Magazines. Year’s subscription Model Airplane Mens, 35s. Full Catalogue free. Willen Ltd. (Dept. 1) 9 Drapers Gardens. London. AUTO VAPORISERS, NEW ROAD, LYMM, CHESHIRE K.C.2.

Kindly mention AEROM OD ELLER when replying to advertisers 13θβ[!ϋϋ0 280 May, 1958

AMERICAN PLASTIC KITS M O N O G R A M I 72nd S c a le , a ll 11/9 e a c h Invader B.26; Mitchell B.25; Douglas D.C.3; Douglas B.66. Ford Tri-motor: Navy Catalina PBY. Skytrain; Constellation: T.28 Trainer; Tri-Pa:cr; Cessna 180. M O N O G R A M A lb a tro ss A m p h ib ian 18/-. A U R O R A l/48th Scale, all 8/- each Kamon Hok Helicopter; M.E.I09; Texan; Fokkcr D.7; S.E.5 Sopwith Camel; Fokkcr Tri-plane; Nieuport; Jap Zero. A U R O R A Panther Jet 9/6. H ellcat 9/6. B oe in g P.26 119. Sabre 10/6 S ik o rsky S.55 10/6. Lockh eed F.90 11/9. H o rn e t Jet H e lico p te r 9 6. H clld iv e r 11/9. S u p e rfo rtre ss ( I/7 2 n d ) 31/-. Send S.A.E. for List cf over 200 Plastic Kits for Aircraft, Cars and boats. Please add Postage for Prompt M ail Order Service. KEEP A TUBE IN THE HOME JONES BROS, of CHISWICK 56 TURNHAM GREEN TERRACE, CHISW ICK- W.4 Sole Monufaciurcn — ’Phone C H I 0858 (I min. from Turnham Green Stotion) E s t . 1911 McCAW, STEVENSON & ORR LTD., BELFAST

COME GLIDING WITH US!!! NORFOLK BROADS RIVERSIDE HOLIDAYS Why not come to the Kent Gliding Club, Detling, near Maidstone, Modern furnished bungalows, also cottages and caravans, for your holiday? situated near River Thurne. Ideal Yachting and Angling. Courses are being run for beginners on June 9th-July 7th and September W rite now for free illustrated Booklet. 22nd. lasting five days. Monday to Friday. This includes flying tuition by qualified instructors in two-seater training gliders, and food and MORSES HOLIDAY CENTRE, REPPS, accommodation, IS gns. inclusive. POTTER HEIGHAM, NORFOLK W rite for details and brochure to: All aeromodellcrs are especially welcome. The Proprietors hove a wide variety of interesting models, including model aeroplanes, airships and Course Secretary, KENT GLIDING CLUB, 14 Dallin Road, Bexleyheath, Kent helicopters.______

l » l t VOI It 3MH9II .1.1 ΛΟ M iK H S . ♦ CUT OUT------fly a ways PLASTIC KITS FLYING KITS M o n o g r a m P ric e Keil 20 in. wingspan ru >ber | Your engine needs an ELMIC Mini-Diesel Timer, ♦ Douglas D.C.3 11/9 powered kits. Consolidated “Catalina”... 11/9 Chipmunk. Globe. Swift, ♦ the little fuel cut-out with the big snap. Weighs 3 Constellation “Super G “ 11/9 F.W.I90, Piper Super Cruiser. S.E.5. M E. 109 P r ic e 3/9 e a ch A u r o r a J only 1/5 oz. complete. Price 9/- inc. P.T. Diesel Powered Kits Convair V.T.O. .. 11/9 Keil “Ranger" Control line 12/9 Lockheed Lightning 1 19 Keil “Skylon” Free Flight 12/9 Lockheed P90 11/9 Boeing P26A 11/9 G lid e r s Also full range of Revell and Keil “Dolphin" 30 in. 4/9 tlKm ttli; U K IIV m t (SI. Helens) LTD F r o g K its. Keil Invader 40 in. 7/6 CORPORATION STREET, St. HELENS, LANCS. Tel.: 397Z Packing and Postage 1/3 extra for kit. Bond’s 60-page General Model Catalogue price 2/- Mercury Wasp ... 12/7 Wcbra Winner Diesel ... 86/8 Mercury Marvin .. ... 19/6 Webra Record Diesel 80/- I B O iM I'S O ' lilS IO V ΙΙΙΙΛ 1) 1,131 I I I M e rcu ry T e rro r ...... 15/11 Α .Μ .Ι0 ... 58/6 A .M .25 68 6 357 E U S T O N ROAD, LONDON. N.W.I E s t. 1887 P h o n e : E U S t o n 5111-2 Mercury Mac ... 18/- Frog 80 47/6 Frog 149 54/9 Contest Combat King .. 22/6 E.D. Bee 54.9 E.D. Racer 79 /- Contest Calypso Cub ... 13/6 M ills 0.75 c.c. Stand ard ... 59-8 K .K . C h a m p ... 12/9 Read Popular Flying, the bi-monthly magazine of the Electric Motors, all sizes: K.K. Ranger 12/9 6/-, 7/11, 9/7, 19/10 Popular Flying Association. Subscription £1 a year. K .K . Pacer ... 18/- 2 5 - Specimen copy with scale plans of the Hirtenberg HS9A Frog Aerobat Aeromodcller Annual II/- ALL POSTAGE EXTRA Lisls 4d. Stamps and history of this unique aircraft, Is. 6d. from the POPULAR FLYING ASSOCIATION, — TH E 3IOIHXM CHS U lvM lli/VO IS Londonderry House, 19 Park Lane, London, W.l A I R C R A F T ss B O A T S ss R / C :: P L A S T I C S , E tc.

AMERICAN PLASTICS W e are booking orders for Monogram kits which are A NEW ENGINE? arriving direct from the States at the end of this month. Orders will be taken in rotation as only a limited number MODEL STADIUM OF COURSE! of kits will be available. Send 3d. for our new Catalogue THEY REALLY UNDERSTAND THEM. containing over 150 Plastic kits and avoid disappointment. FREE TEST MOUNT AND FUEL TANK WITH LATEST BRITISH KIT ALL ENGINES SOLD I/72nd HURRICANE MK. 2c— 4/9 plus postage. With retractable undercarriage. A super detailed MAIL O R D E R S BY RETURN kit by Keil Kraft. 5 Tilhiyp Hay l:isl KEMPS OF CHEOISFORO lla> Hers l.aut*. lla iT o n . 31 ■ «1 «Ilos«·* 136 Moulsham Street, Chelmsford, Essex Telephone: PIN N ER 6459

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Equipment which will enable the user to operate, independently, more than one control, is now demanded by most enthusiasts. E.D. Mk. IV MINIATURE The reliability and ease ol co«tro of the Tuned Reed System , pio eerec? 3-VALVE RADIO CONTROL by E.D.. has. after long and exha 'stive U N IT comprising Transmitter. Receiver and tests, been amply demonstrated by Escapement. Receiver. 8attcrics weigh only continual successes in open 10* oz. Price complete £20 9s. 7d. (sold separately) competition. E.D. now produce our models which will adequately meet the demands of most Radio Control enthusiasts.

The Mk. V EVEREST Tuned Reed t Channels MULTIPLE RADIO CONTROL U N IT. Includes CONTROL BOX size 6 x Sj‘ x J| giving up to 6 controls.

TRANSMITTER RECEIVER with 8 ft. Sectional Aerial fitted with Standard Hard Valves and 6 Standard Relays. Price complete £29 3s. lid. (sold separately).

E.D. BOOMERANG A Radio Control Unit completely wired and ready for use in model planes or boats. Supplied with soft or hard valves. The set provides five differ­ The “TRANSITROL” ent tappings which The FIRST COMMERCIAL enable the aerial load TRANSISTOR RECEIVER. to be matched to the Combines all the advantages of valve. Price, includ­ multi-valve modulated Receivers, ing Transmitter, together with simplicity and very low Reccivcr/Battcry size and weight. Receiver and Escape­ R E C E I V E R : Size 2 1" x I A" x I W e ig h t 2A ozs. Price— Receiver. m ent £ 1 1 18s. 6d. Transmitter and Escapement. £12.13.6 Receiver only £6.1.8. (sold separately).

Full information and technical details of all E.D. Radio Controls. Units. Mechanisms. Spare Parts, and Accessories, etc., arc given in our illustrated list, free on request. Information concerning (All prices include P. Tax) the full range of E.D. Engines and other E.D. Productions is also included. m Order from your .□.ELECTRONIC DiVELOPNENTS (SURREY) LTD Model Shop. DEVELOPMENT E N & I N E E R S βο37·βο3β ISLAND FARM RD. WEST MOLESEY.i SURREY) ENGLAND.

Made and printed in Great Britain by the Croydon Times Ltd.. 104 High Street. Croydon, for the Proprietors. The Model Aeronautical Press Ltd.. 38 Clarcndcm Road. Watford. Herts. Published by the Argus Press l.td.. 42-44 Hopton Street. London. S.E.I. to whom all trade enquiries should be addressed. Registered at the G.P.O. for transmission by Canadian Magazine Post. ... in a KK rubber powered FLYING SCALE KIT

® Full size plan © Building and flying instructions ® Plastic propeller and noseplug © Plastic wheels © All wing ribs, formers, etc., clearly printed on high-grade sheet © Ample best quality strip balsa © Covering tissue © Sheet celluloid ® Cement © W/re ® Rubber motor

18 F o c k e - W u l f 190 17" M .E . 109 I5 j ” N ie u p o r t 16" sp a n S.E .5 16" S o p w it h C a m e l

18 Fairey Junior 20' Fairey Gannet 16' Fokker D-8 20 Globe Swift 19 Percival Provost 19 Stinson 19" Cessna MO

to the famous kk junior flying scale series

STUKA GERMAN DIVE BOMBER Price 4/ I Very accurate scale model of this well-known war-time plane