DEC. 1953 Digital Edition Magazines.
This issue magazine after the initial original scanning, has been digitally processing for better results and lower capacity Pdf file from me.
The plans and the articles that exist within, you can find published at full dimensions to build a model at the following websites.
All Plans and Articles can be found here:
Hlsat Blog Free Plans and Articles. http://www.rcgroups.com/forums/member.php?u=107085
AeroFred Gallery Free Plans.
http://aerofred.com/index.php
Hip Pocket Aeronautics Gallery Free Plans.
http://www.hippocketaeronautics.com/hpa_plans/index.php
Diligence Work by Hlsat.
1 I Inside Your Engine
No. I Honing the Bore
This is the first of a series of advertisements which give you inside information on modern engine production. Above you sec a skilled operator using the latest Dclapcna honing machine on the cylinder liner of a Spitfire. The liners, made from high tensile nickel-chrome steel are drilled, reamed, hardened and ground Ye% it w i t o u rt ! The mystery engine featured in last month’s before the final honing, which ensures that each ** Acromodcller " was the latest piston is a dead fit in its accompanying bore. The from our stable. Wc regret that M k.II DART owing to the many thousands of operator, holding the liner in a special chuck, is postcards received we cannot 0 5 c.c. 64 2 Inc. tax here “ feeling " the fit by means of the piston, a announce the name of the winner until next month. An announce |ob he does many times before a perfect com ment as to when the new point one pression seal is ensured. Note the absolute w ill be available w ill be made in the same issue. Meantime place an cleanliness of the machine platform, vital for order with your local model shop. precision honing, and the flexible pipe above the hone itself from which soluble oil continuously flows the whole time the job is in progress. Engineered to last a Skilled operations such as this, coupled with modelling lifetime the very latest in machine tool equipment ensure that your Davies Charlton Allbon engine is the by best that money can buy. Ask your Model Shop for the particular engine in our range that you DAVIES CHARLTON LTD. Mk.II JAVELIN require. They arc all readily available. Barnoldswick via Colne, Lancs. 149 c.c. 65 4 Inc. tax
D.C. 350(G) SPITFIRE D.C. 350 1 c.c. 64 ?. Inc. tax 3.5 c.c. 78 5 Inc. lax December, 1953 (>97 Ή CJ
DAVIES CHARLTON ACCESSORIES
Always Insist on Davies Charlton Accessories which are made with the same care and precision Trade Distribu as our well known range of engines. Illustrated on this page are several useful items designed tors E. KEIL & as a result of many requests from modellers CO. LTD., 195, themselves. W e shall be making additions to the range from time to time, so why not write Hackney Road, and let us know the accessory you have always London, E.2 wanted, but never been able to get ? Tel.: Shore FLYWHEELS Dart ...... 9/6 ditch 5336 Spitfire, Javelin and D.C.3S0 ...... 11/I I f RADIAL MOUNTS Dart, Spitfire and Javelin ...... 4 9 EXTENDED FUEL NEEDLES Dart, Spitfire. Javelin and D.C.3S0 ... 2 5 ANGLED JET ASSEMBLIES Dart, Spitfire, Javelin and D.C.350 ... 5/7 EXTENDED COMPRESSION SCREWS Ono inch for Dart. Spitfire, Javelin and D.C.350 2/5 2j lihulltf mention AiCItO Λ IIH H '.I.Ι . Ι Ί Ί Ι trlien re/ili/inff to advertisers m m 698 December, 1953 The theme for this CHOOSE VERON Xmas is “ VERON FOR VALUE ” ... _____AND YOU VERON became it'* a name that «lands for ii fin· range of kiti from which you CAN’T GO WRONG! may take your choic·—you'll gat Juet what you neat!—there'· a kit for everyone LAVOCHKIN and every one of them ii a matterpiecel 37* Span replica of the well-known Soviet VALU E because you Just can't find a kit aircraft. Phil Smith's (Vcron's designer) anywhere to compare with the quality, IMP system ducted impeller gives it the nearest approach to real jet flight. Designed performance and realism at such a reason for 5 to 9 c.c. motors. a b le co st! Kit includes impeller and KIT starting pulley. PRICE Inc. P. Tax TWO WARTIME Companion Kit to the Lavochkin "IQ /*) is the 34* span IMP SABRE. ± 7 . ! ΟΡΡΟΝ ENTS Inc. P. Tax RASCAL 24v Span Duration Model with an out· standing performance and excellent flying qualities. Kit m t m includes ready carved KIT f C propeller. PRICE Ό L r P T t v SPITFIRE 22 27^ Span Control Line Kit of Britain's immortal fighter. Beauti SABRE fully streamlined—and a 18" Span super quality kit KIT plane to be proud of. p r i « 3 2 1 for ietex SO. a " truo to PRICE For I to 3‘5 c.c. motors. Inc. P. Tax life ·* scale kit of the swept wing |Ct which has won a reputation for hard hitting 6'5 on the Korean battle front. Inc. P. Tax GOBLIN 20" Span Duration Model. " Just the Job " for newcomers to aeromodelling. Kit contains everything — to build and fly In- KIT VI' t eluding ready carved PRICE ■ propeller. Iisc. P. Tax FOCKE-W ULF 190. AI 33J* Span Control Line Model of Germany's crack fighter plane. ASK YOUR DEALER Porfect in every detail KIT “ MARLIN ” Marine and outstanding in per- PRICE FOR THE FREE VERON formancc. J^JEL Q Designed especially for Radio Control Superb kit for I to S c.c. power units or electric 6 For 2 to c.c. motors. Inc. P. Tax motors (up to 12 volts). Removable cabin top POCKET FOLDER permits access to the commodious radio well. Kit includes 30" > 40" __ __ e_ and select your favourite plan and doscriptiv* KIT ^ I / instruction leaflet. PRICE Jm J · I J m . I I Inc. P. Tax I WHOLESALE ONLY . . and the companion to the " MARLIN " VERON KITS AND POLICE LAUNCH, a 26* replica o f the famous prototype used by London's ACCESSORIES ARE River Police. Suitable for KIT OBTAINA 8 L E F R O M diesel or electric motors. PRICE 42'- YOUR STOCKIST Inc. P. Tax MODEL AIRCRAFT (Bournemouth) Ltd., Norwood Place, Bournemouth Β Η ·Β Ρ ····Β ····Β ·Β ············Β ··Β η ·Β ·········Β ······Η ···ΙΙ^·Ι^' 43061 liindlfi mention AEROMO HELLER when replying to advertisers December, 1053 699 m m m JH make (©lortousi ?tm ns «Sifts These magnificent galleons, beautifully coloured, exact in every detail are supplied in Kit form with step by step photographic charts which simplify construction and help the modeller to interpret plans and measurements. Kit includes beautifully coloured silk screen panels, sails, cannons, shaped hull, rigging, paints, plan and detailed building Instructions. Obtainable from all first class model shops. A rk Royal ” 19 ins. long. 62/9 including tax. C u tty S a rk 17 ins. long. 44,'- including tax. Santa M aria ” 19 ins. long. 49 6 including tax. “ M ayflow er ” 18 ins. long G o lden H in d ” 24 ins. long. 35/- including tax. 58. 8 including tax. COLOURED BROCHURE FEATURING ALL MARINECRAFT KITS Hand this coupon to your model shop for free copy or, send 4d. in stamps to ; 141 STRATFORD R°· BIRMINGHAM, I· M ildly mention ARROMOUELLEH irhrn replying to atlrrriiscrH m ■HDMil December, 1053 ************************ JUST GOOD g i c SE R VICE NORTH SOUTH EAST W EST GREGORY’S Service is the Best ************************* * ***************** X-ACTO TOOLS. F ro m 3 0 to JETEX 62/6 + 10/5 P.T. B O A T K IT S 84/0. All «pare blades in stock. MOTOR OUTFITS P.T. Veron's Marlin 36' long. No. 82 Tool Chest. 30 0; No. 78 Atom 3S Outfit ... 8 0 1/4 10* beam. B*l»* and ply Wood Carving Set. 37.6; No. 77 50 O utfit ...... 10 I I + 1/10 construction, design Wood Carving Set, 23/0; No. I 50B Outfit with Aug- e x p r e s s l y Knife (with No. II blade), 3/0; No. menter Tube ... 10 II 1/10 fo r R / C . 2 Knife (with No. 22 blade). 3 6 ; Jctmastcr Outfit ... 24,0 4/0 For I-5 c.c· No. 5 Knife (with No. 19 blade), Scorpion Outfit with eng*nes. 6 6 ; No. 51 Knife Set (No. I knife Augmenter Tube... 39/0 l 6/6 and 6 blades), 5/6; No. 52 Knife Set (No. 2 knife and 6 blades). 6 1 ; TAILORED K IT S No. 62 Knife Set (No. I and 2 knives P.T. Voodoo (5 0 )...... 6/4 — l / l RADIO CONTROL • Wavemaiter. 2-7 c-c. 60 0 i 10/0 with 12 assorted blades) 12 3; No. Hawker Hunter fj)... 15.6 2/7 50 Plane S 6 ; N o. 52 Spokesha»e COMPLETE OUTFITS • Spraymascer. 1-3 c.c. 3Γ04* 5/0 Supermarinc Swilt liindli/ mention AKROMODELLER when re/tlffint/ to advertisers December, 1953 701 •MiUUiJT S 1 9 H H ί W& AuiCZZ ■ S/Ldr. SEVILLE DUKE says: “ Aircraft performance otves a lot to exterior finish . . . 1 can vouch for SO SIK Combines all these features : Proof against fuel —all present types in use. SONIK is the very latest advance in the finishing and protection Λ ζ Brilliant gloss of model aircraft . . . created for its one purpose only, it combines down air f^etton-incre^jircrafi many special features found in no other product. It is not a dope. Protects fabrics It is ww-cellulose. Your skill and time in building deserves ' _builds up strength. SONIK’s superb finish. It is equally suitable for fabrics, wood or Tough and flexible metal surfaces. Use SONIK on your next job and see the difference! —for durability. ^ Obviates warping I N 12 FINE COLOURS ' —resists—resists tempetemperature variations. Black . Azure Blue.. White...... Battleship Grey Λ ζ Fewer coats required Silver . Light Cream ' —easy to apply. Bright Yellow .. . Vivid Green. Roundel Red .... Mid. Green . Dries rapidly Roundel Blue _ Dark Green . —leaving no brushmarks. 1 5 PER JAR Special Thinners i / - per bottle. First acclaimed at the recent Handicraft Exhibition. Trade enquiries tee!corned by sole makers: Obtainable at oil good Aero Shept. STARLINE, SOUTHEND-ON-SEA, ESSEX liimllfl mrntinn AEtliiM tlDELLEIt tehees replying to advertisers SJ0QM3 702 December, 1953 191(0 9IOOI1, i:\M \IS LTD. SUNLEIGH WORKS, ALPERTON, MIDDX. (M anotm t Director; J. E. Ballard) Offer you an IN CO M PLETE range of model engines at present. B U T . . . the world famous 3*5 P.B. and B.B. models that ■ diesels will shortly be will fill the gaps portrayed by ghosts in outline. Every effort will be made to speed the production of this new range of motors which will be Manufactured by AEIIOAAITTICAL ΙΙ Η ΤΠΟΛΜ Λ FXblM I K IX . rOMIMINV LTD. er y [Monotfng D irector: F. F. Well*) V Sunleigh Works, Alperton, Middlesex Co m p e t it iv e P r i c · V C ... lo put to good use the X-acto Burlington Hobby Chest, the finest hobby knives and tools you can buy. The superb cabinet and tools are made in Kngland by folk who know that craftsmen strive always for perfection. Every tool and blade designed for a specific job, scalpel-sharp and made of the <. finest surgical steel. See your nearest X-octo Agent test ^ the balance and see the l*e:mliful workmanship of these tools for your ell. and you will realist· why they bring more .kill to your Burlington Hobby Chest contprnr· thrre X^-irto kmvci with a Ml nf intrrrh»rig*· able Idu'lr*, |*iiu|jci unit miller*. a Mock planr, li«Ue • tripper. a lrrl rule cnitl ban dillf Murk. Cniii|>lrtr with In · true! ions. X-actO tingle Knives from 3 - X-acto blades are available separately in p a cke ts. S short blades, straight 2 6 S short blades, curved 3/9 and 2 long blades. 2/- Ihhtr X~acio 7 W K its from 23?· ® IFVfl* fnr il!usirnt*rt J*t Xmas Greetings to all nip Customers from THE MODEL AIRCRAFT !Μ(2)® © Μ ϋ SPECIALIST Send for MY NEW 1951 MODEL AIRCRAFT PRICE LISTS FREE. CONTROL LINE KITS F R O G K IT S KEIL KRAFT and VERON ILLUSTRATED PRICE LISTS FREE. Keil Kraft Champ ...... 12/3 Control line. VANDIVER Mk. II ILLUSTRATED X-ACTO PRICE LIST FREE. All order· sent pox Keil Kraft Ranger . 12/3 14/- VANFIRE 40* for Frog S00 free over Cl under tend I - for pottage. C-O.D. order· welcome. Pacer ...... 18.4 engine 28/- V A N T A G E class B All oversea· order· free of purchase tax. Phantom 22 8 team racer 20/- MIRAGE for 14 8 Veron Bccbug Frog 50 motors 10/4 Panther 29 2 THE VICTORY, a NEW MARINE Free flight power. TARQUIN for Focke Wulf 190 24 6 50 12/- ZEPHYR for SO 10 - CRAFT GALLEON KIT. A magni W yvcrn ...... 27,5 FIR EFLY biplane 14/4 FO X 14/- ficent detailed model of Nelson's Midget Mustang 26 3 C IR R U S 48* 16/4 PO W A V A N Minibuster 17 6 famous flag ship. K it contains Skyleada Auster 8 9 47’ 16 6 shaped hull and five cut-out decks, Hornet ...... 10/4 step by step photo charts and FREE FLIGHT POWER KITS SECONDHAND ENGINES detailed building instructions. Also Pirate. 34* . 14/- E.D Boe 15/-. E D. Baby 37/4. coloured flags of Nelson's famous Bandit 21,7 Frog SO 35/-, Elf.n I 49 c.c 40/-, signal, printed panels, all brass Ladybird. 41 ’ ...... 21/7 Elfin 2 49 c .t. 4 5 /-, Amco 3 S 45 guns, rigging and paints. Model Outlaw 26 3 E.D Racer 55/-. Frog S00 45/-. Southerner Mite. 32' 12/3 D . C . 350 4 5 /-. Frog ISO 35/-, length 20'. Price 70 - Slicker Mite. 32‘ I I 1 E. D. 3 46 45/- O TH ER G A L L E O N S in this range M A Y FLO W ER 13*. 35/- 5 A R K Skyleada, Point Five 9/3 Scnd your second-hand engine for R O Y A L. 62 4 ; G O LD E N H IN D , 58 8 ; SA N TA M ARIA. 4» 6 ; C U T T Y SE.Sa Flying Scale. 27’ 16 10 my cash offer. SARK, 44 — SEND 4d. for COLOURED BROCHURE. K c .l Kraft Cessna 170, 36’ . . 21/7 Luscombc Silvairc, 40' 21/7 Veron POLICE LAUNCH. 26' 42 - J E T E X K IT S Piper Super Cruiser. 40' ... 21/7 RADIO CONTROL NEW TAILORED KITS SPRAYMASTER. Length 24’. Veron Cardinal, 37* 16.6 NEW ••BOOMERANG" radio Sparrow for 35 ...... 1 9 Beam 8^*. for motors 1 to 1$ c.c. Lavochkin 17. 37’ ... 29.2 4 9 control set. Javelin (or SO ...... engines o r eloctric motor. 36 - Skyskooter. 48 29 2 Price £11 . 1 9 .6 complete Swift for S O ...... 4 9 WAVEMASTER. Length 34'. Mercury Flying Scale Stinson 7 5 33/- E.C.C. 951a HARD VALVE RE- Voodoo for 50 Beam II ’. for engines 2i to 5 c.c. Aeronca Sedan. 65i* 66 CEIVER. 27 M/C band. Now M.7 for SO ...... 4 9 All plywood and hardwood pre Monocoupe . . 26 3 £4.3.2 M.7 w ith motor 10 - fabricated 69 7 Monocoupo. 64* 66 Hawkor Humor for Jetmatter 18 1 C O A STA L C R U ISER . Length 17’ . E.C.C. 1061 TRANSMITTER Sky jeep, 45' ... 33 - Swift for Jetmastcr . . 18 1 Beam 5J". A ll balsa construction. £4.3.2 D.H. Tiger Moth. 33' 31/- The "CHALLENGER", the JETEX MOTORS For electric motor 20 S ELECTROTOR. Type 240 for above. ENGINES only complete ready-to-fly control 9 4 line model aircraft. Pr.ce 44 - less Atom 35 ...... 9 I I Amco, 3 5 c.c. P B. .. 71 6 SO outfit 12 9 Amco, 3-5 c.c. B B 109 3 engine, or with E.D. BEE, £4 . 18.6, 50 m otor ...... 8 9 Allbon Oart II, S c.c. 64 2 o r w ith E .D . I -46c.c engine. £ 5 .1.0 50b motor . .. 5 10 Allbon Spitfire, 1 c.c. 64 2 Plane with second-hand E.D. BEE, Jetm astcr 100 28 65 4 78/-, o r with second-hand 1 46 c.C. Augmenter tube 5 10 Allbon Javelin, I S c.c. D .C . 350, 3 5 c.c...... 78 S engine. 80/- Send for LATEST JETEX E.D . Baby. 46 c.c. 52 3 Latest KEIL KRAFT HANDBOOK ______LISTS. E.D. Bee, 1 c.c. 54 8 FOR I9S4 1 3 post paid. SEND TODAY FOR YOUR E .D .. 2 46 Racer ...... 78 5 BALSA W OOD- Please note all COPY OF THE E .D .. 2 46 Waccrcoolod 109 2 Balsa Wood orders are packed with AEROMOD E LLE R E.D. Mk. IV, 3 46 c.c. 78 5 a 3 6 'x3 "'J' hardwood plank at A N N U A L 1953. Mills. 7S c.c...... 58/- no extra cost. PR IC E 10/- Potcoge &d. Mills. 75 c.c...... 63 10 Mills, 13 c.c...... 87 - Elfin. -5 c.c...... 64 2 KEILKRAFT GLIDERS Elfin, 149 c.c...... 56 2 C utie 9d. Elfin, 2 49 c.c. 6 6 V e g a ...... I/S Frog ISO ...... 47 3 Spook ...... 1,9 Frog S00 ...... 71 6 Polaris 2 II N E W K IT S Comet 4 1 K e .lK ra lt D Η. 110 for Jctox SO 4 1 Soarer Baby 5 10 SPORTSTER 3 6 Soarer Minor 9 S CHAMP " EeZebilt " control line Soarer Major 13 S kit 12 3 Mmimoa 8 2 SOLARBO BALSA PACK 3 II In vidor 7 7 Postage 6d. Topper ...... 9 II VERON SOLID SCALE KITS Dolphin 4 8 JA V ELIN 4 8, V A LIA N T 7 2. FROG SENIOR SERIES all at T H E XMAS PRESENT FOR THE 4 6 each. R A VEN 18’ low wing. Cub" ... 2 II D.H. COMET 6 5, CANBERRA M O D E L L E R . An X-ACTO Cadet...... 4 8 B.l 4/5. METEOR 8 4 1, D.H.110 R ED W IN G 18* high wing. LIN N E T BURLINGTON HOBBY 18* racer twin rudders. HERON C h ie f...... 21/7 4/1, DRAGONFLY 3 7. La 17 3 2, C H E S T . Pr.ce 84 - ••v" MiG IS 3 2, Swift 2 8, Attacker 18* low wing. WIDGEON 2 8, B.P.P.111 2 5. Cutlass 2 5. X-ACTO HOBBY KNIVES tailed pylon typo and TO M TIT NEW VERON QUICKY KITS. Venom 2 /5 , Sabre F.86 2 5, Sea- A N D T O O L S biplane. F R O G J U N I O R S E R IE S . Midge. Pre-formcd, Prc-decoratcd. sheet hawk 2/8. Vickers 510 2 5. Super X-ACTO No. I KNIFE 3 -. No. 2 balsa construction. Build in 30 mins. marine 508 2 8. Hawker P.I08I 3 4. No. 5 6 4. (w.th I blado). Pup. Scamp, Minnow, Skippy. and 2/5. Hawker P.I067 2 5 X-ACTO KNIFE SETS : No. 51 5 4, Speedy, all at 1 4 FIREFLY. AUTOCAR. FAIREY Postage on solids 6d. only. No. 52 6 9. No. 62 12 3 X-ACTO KEILKRAFT GALLEON KITS JU N IO R . W Y V E R N . C ESSN A L .19. Veron M ARLIN . 36' long. 10' beam. W O O D C A R V IN G SETS No. 77 REVENGE. 80UNTY. SANTA PR O V O ST, all at 3/6 each, post 6d. Completely prefabricated balsa 23 No. 78 37 6 X -A C T O T O O L MARIA. GOLDEN HIND. ARK NEW MULTICRAFT JUNIOR and ply construction 72 11 C H ESTS No. 82 30 ROYAL. All at 4 8 each. KN IFE ...... 3 - 22-22* CASTLE ARCADE, CARDIFF TELEPHONE : CARDIFF 29065 liitully mention . I EHOM ODELLtitl when replying to adrertixvvH ^ΝΟ O' tT M M I 14 to\our* in Mgh-tfo»* finish, ctrm |\ocsy dope of supecior quaYity. dr»©* 'n <0 5 »Nom ose«.E*. < "·« · SHWNKING DOPE. BANANA OU. A' ox. 1/-. * pi. 4/-. THVNNEKS. » os- *»· ^ c^ aU V.ndso, n>od^t.W- SALSA CEM ENT, rapid «»τγ»η*. teuaoous. l/S per tub©· ADH ESIVE ol ouwiu'4"'* ι^«·η« MEAT A N D WATERPROOF *\\ purpose H tA i kitYtv. \ /3 P©r tub©. & CO Distributors to u t H P ° R T ’ t A N c S > FOR RELIABLE SjRViCE Ro l a n d s c o t t II I I I I I <11111 I i ___ β * P O P U L A R E N G I N E S * ★ SECOND-HAND E.D. ·46 cc. Diesel ...... 52/3 E N G IN E S * ST., BOLTON * J A P S I L K * Dare Mk. II -5 c x Diesel ... 44, 2 O v e r 200 Engine, to choose Mill P.75 Diesel ...... 58/- from. 50 different typo* ★ T O O R D E R M ills S.75 Diesel ...... 43/10 stock. All guaranteed. Money L is t y o u r E.D. Bee. I cc. Diesel ... 54, 9 refunded if not entirely satisfied. forward ~P and Spitfire I c.c. Diesel ... 44 2 Λ . .er . Model*.Mort*··. The wife E.D. 46 c.c. Diesel ... 37 A J*r «Ή friend niay also be Elfin 1-49 c.c. Diosel ... 55/9 interested. available. Add postage on a ll Allbon Arrow 1-5 c.c. G.P. jo orders under 20 /- E .D . I 46 c.c Diesel ... 57/- A mco B7 c.c. Di©fel ... 37.6 Javclin Mk. II. 1-49 c.c. Diesel 45/4 E.D. Bee. I c.c. Diesel ... 37 , a rdl· *.n Meh - 4 / - each roll chut· ol 16 ' ' panels ... 40/- ★★★★★★★★★★★★★★★ Fro* ISO. I-5 cc. Diosel ... 47/3 Frog 160. 16 c.c Glow ... 2$/- Apply Elfin 2 49 c.c Diosel ... 44/4 Elfin 1*8 Diesel ...... 37/1 h c y .\°D thc framework with All JETEX Motor* and Kit* E.D. 2 44 c.c. Rator...... 78/5 DEX ...... 2 /4 tin W ^*y* from *tock. Javelin 149 Diesel ...... 3 7 4 W o u se and recommend th. Oliver Tijcr, 2-5 c.c. Diesel 130/- E.D. Comp. Special. 2 c.c. ... 35/- Trade enquiries invited. D. C. 360 Mk. III. 3 5 cc. Diesel 78 S following accessories s— Elfin 249. Beam ... 45/. P.A.W. ·· Trucut ” Props. Brit- E. D. Mk. IV. 3 46 cc. Diesel 78/5 D. C. 350 Mk. II Dioicl ... 42/4 ★ ★ ★ ★ ★ ■ A·********* fiK D opes and C e m e n t . H . M .C . Fro* 500. $ c.c. Glowplu* ... 71/- Amco 3·5 c.c. Diesel ... 47/6 H a r d w o o d C e m e n t. *· S o la rb o " Am co 3 5 B 8 Diesel ... 109/3 E. D. Mk. IV. 3-46 c.c. Diesel 4S/- ★ POPULAR KITS * Balsa Wood. E.D. and E.C.C. Am co 3-5 PB D iesel...... 71/3 Frog 500. 5 c.c, G.P. ... 40/- R, Units. X -A C TO Tools. Allbon ·I c.c. when available. Phantom Mite C/L Trainer.. Yulon Eagle, 5 c.c. G.P. ... 40/- Elf King. I 5 c.c. Stunt 6 ★★★★★★★★★★★★★★★ ★★★★★★★★★★★★★★★ Yulon 29. See. G.P. ... 37/4 Ranger Class - A ·· T.R. ★ RADIO CONTROL McCoy 19 G.P ...... 6 5 /- Pacer Class " B ,e T.R. 1 4-GENERAL ACCESSORIES* U N I T S * ETA 29. Mk. Ill G.P. ... 90/- Stunt Queen. 5 c.c. Stunt 6 15 c.c. Team Race Tanks ... 3/3 Morcury Mk. II Class ** A 30 c.c. Team Race Tanks ... 3/4 E.D. Mk. II 3 Valve Unit ...351/4 *FU LL LIST ON REQUEST* E.D. Mk. IV 3 Channel Unit 475/- T.R ...... 2 Small Stunt Tanks ...... 3/10 Your Engine will be taken in Vantage Class " B " T.R. - Light Laystratc. 70’ 3 4 ; 100' 3/9 E.D. Booineran*, Ready W ired 239/4 part exchange for AN Y model 6 Transfers—Assorted pkt. ... 6d. E.C.C. 951A Receiver ... 83/- Hornet Class - A M T.R. ling good· if in good condition. Vortex A,2 SailpUno 6 Fuel Tubing ...... Per fc. 6d. E.C.C. 1041 Hand Transmitter 83/- ( Pilots. Small 2/4; Large 2/11 E.D. Mk. I Clockwork Escape Please forward return postage Marauder A .2 Sailplane - H.M.G. Hardwood Cement 1/3 Ace 30"span Rubber m ent ...... 5 5 /- which will be credited if your 3 Elfm Jet Assem blies...... 4 / - Gypsy Wakefield. 4 AKH O M O m U EH Designed and produced in the Tradition that has made MERCURY world famous Following in a line of famous deirign* that have become classics of their kind the world over, como two moro Mercury Kits by tho peoplo who gavo you tho Monitor, the Chrislea Skyjeep, tho Tigor Moth, the Marauder, the Gnome and a host of other well-known models that fly proudly under Morcury’s name—-and there aro more to come. GO TO YOUR MERCURY STOCKIST ΤΟΟΛΥ AND ASK TO SEE MERCURY KITS FOR YOURSELF l MERCURY MERCURY MAGNA T C Y A IJ CLASS “ A" Froo-flight cabin monoplane for small diesols from I LAHI i t e a m r a c e r 0-47 to 0 75 c.c. and ideal for tho newcomer to powered models. In construction, quality and per Modern line» and rugged construction are com formance. the Magna reflects the attractive features of Price to be bined m this model which is to specification for tho large do luxe Mercury Kits, and is a model to give S.M.A.E. Contests under l$53 rules. With endless pleasure in every way. 38'' wing span. With 1210 announced ptinted and pre-shaped Solarbo, plan and in pre-shaped and pre-prmted Solarbo, easy-to-follow structions. (Fo r engines up to 2 5 c.c.) plan, tissue, etc Price (inc. P. Tax) M o it K e \ g i \ i ;s λ ι η ; i »o h i h c i <:i > h i MERCURY FUELS THAIS ALL OTHER MAKES OF FUEL TOGETHER b w u u s v if They are blended from the finest materials obtainable. το τιιοοκκ neon if They are tested for consistency and quality over every No. I RED LABEL, Petrol, per bottle ...... 2/6 one of the many stages of processing. No. 2 GREEN LABEL, Methanol-Castor, per bottle... 3/3 No. 3 O RAN GE LABEL, Standard Diesel (needs Ether if They are unvarying in quality. added) ...... 3/3 if They prolong engine life and reduce flying costs. No. 4 BLUE LABEL, Economy Glow-Plug 2/9 No. 5 M AGENTA LABEL, Competition Glow-Plug... 3/3 if There is a specially developed type for every need. No. 6 YELLO W LABEL, All-in-one Diesel ...... 2 9 No. 6R SILVER LA BEL, Racing Diesel containing Redox if There aro years of specialised experience behind their additive ...... 3/9 production and research and experiment are con N o. 7 P IN K L A B E L , Racing Glow-Plug containing tinuously being pressed forward. Nitro-Methane ...... 4 3 No. 8 BROWN LABEL, Castor Base Competition if They carry the name of MERCURY and are therefore Diesel ...... 3/3 reliable always. E T H E R ...... 3/3 MERCURY FUELS AND MERCURY KITS ARE DISTRIBUTED TO THE TRADE BY lllvMCY ,|. M 4IIOLLS LTD. WHOI.KSAI.K 308 HOLLOWAY ROAD, LONDON, N.7 Telephone NORth 4272 Himflff mention AEttO.MODELLEIt when replying to advertiHern lit L'Efl 706 Decembery 1953 Once again the Xmas Issue of the A eromodeller gives me the opportunity to wish my friends and customers throughout the world a very Merry Xmas. This year, particularly, I would Joyeux Noel like to add a special “ Thank you” for the ★ ever-increasing support you have given me, and for your Felices Pasquas very welcome news and letters. I consider myself ★ lucky indeed to be able so successfully to Boas Festas combine work and pleasure, and I hope, for my part, ★ to continue giving you the best service possible. Buon Natale So Merry Xmas, Modellers, ★ everywhere, and a Happy New Year to us all. Frohliche Weinachtcn Arthur Mill let t. ★ Boldog Karacsonyi GREETINGS TO THE MAKERS OF Unnepekep Allbon Motors, Atnco Motors, E.D. Radio Control and E.D. Motors, ★ Ellin Motors, Jctcx, K.K., Mercury, Skylcada, Veron and Wavemaster VVesolych Swiat Kits, Solarbo Balsa, Britlix and all those firms whose products I am so ★ glad to be able to sell to modellers all over the world. May 1954 find S Nowym Godoni you able to produce still more o f your excellent products to meet the ★ demands o f modellers who like best o f all to fly British. If your language isn’t here, put it down to ignorance if you like, but good wishes arc the same everywhere. ARTHUR IAU IIITI 16 MEETING HOUSE LANE < s BRIGHTON SUSSEX-ENG liiiuUy mention AEHΟλίΟ!)El./,Hit ivhon ivplyhiff to udvertisers December, 1953 707 ESTABLISHED 1935 V O LU M E XVIII NUMBER 2 I S DECEMBER 1953 |NCO«*OtATiNO 'THI MOOU *(·θ η »Η ( CONSTRUCTOR* Tho*o Were The U u >n Covers the World have just l>een browsing through the very first Christmas Number of of Aeromodclling your/our favourite magazine (actually the second issue of this now ( world famous modelling paper to be produced), and it is interesting to note the changes that have taken place since then. To recount a few E ditor: of them illustrates very largely the manner in which the A r r o m o d k l i.b r C . S . RUSHBROOKE and the Model Aircraft Movement have gone forward together. A n Jita n t Editor j In 1935, this magazine was published by the Ham in-Dean Publishing H . G . H U N O LE BY Co. of Fetter Lane. London, at a cover price of 6d. for a 30 page issue ! No mention is made of an Editor- probably the rather ragged contents Public Relationi O fficer : of that issue influenced the gentleman rcs|x>nsihlc to liido his light under D. J.LAIDLAW DICKSON a very big bushel 1 No sir, it was not me . . . I have only had that honour for the last thirteen of this magazine's eighteen years of life. Publithod monthly on lh« 15th of (ho No less than 22 per cent, of the pages at that time were devoted to the previous month by the Proprietors : activities of the Skybird League (forerunner of the Spotters Clubs, THE MODEL AERONAUTICAL which did such yeoman service in the last World War), and a further PRESS LT D . 12 percent, reported the varied interests of the Junior Section of the 38. Clarendon Road. Watford. Herts. Air League of the British Empire. With another 22 per cent taken up by Subscription rate 21/- per annum prepaid advertisements, the keen acromodcllcr was left with a meagre 16 pages (including Special Christmas Number). of material from which to gain his modelling gen. Advertisers, some of whom are still with us, included the Now Kent Road shop of pioneer Harry York ; Northern Model Aircraft Co., from Contents which alas Joe Kenworthy has since passed on ; Lines Bros., who were just starting their extensive range of Frog kits ; Model Supply Stores of SPECIAL FEATURES Page Manchester, then at their Prcstwich address; and no less than three *· P A A -D A Y M ...... 710 companies exhorting acromodcllors to stretch their height as well as FLUTTER VALVE AND “ CURLY their rubber, the ads. being suitably cmlxdlishod with sketches of C A R B ...... 712 muscular males anti buxom wenches. P U Z Z LE P IC TU R ES ...... 725 And what of the contributors ? It goes without saying that a certain CONTEST AVERAGES 726 Capl. G. K. Bowden was expounding the virtues of low-wing designs and CHRISTMAS excessive dowulhrust in the pioneer power models of that era, the TIME FOR REFLECTION ... 730 illustrations being remarkably up-to-date when considering the many " SERAPH " ...... 734 thousands of words he has contributed to the aeromodclling world. " THE LUTON MINOR ” ... 735 Denis Fairlce (later to become a “staff ” reporter, and still dabbling in " THE FAIREY SWORDFISH Mk. I 736 1953 with scale models) demonstrated how to instal a 10 c.c. motor in a ARMCHAIR AERONAUTICS 738 model designed for rubber drive ; and J. V. Connolly started the practice THE OFFICIAL APPROACH .. 739 of including frightening formulae in articles on aerodynamics for A/2 AIRFOIL TOPICS 748 aeromodellers, an " article padder " that very quickly went out of THE COVER PAINTING 753 favour. The solid model was well catered for with ah article and drawing for the Hawker Nimrod, and it is of interest to compare the rather REGULAR FEATURES sketchy draughtsmanship with that now enjoyed from our modern HANGAR DOORS ...... 708 George Cull. Three club reports reminded me of the days when I was ENGINE ANALYSIS— official can-carrier (Hon. Sec.) to the Lancashire M.A.S.. and the many JE T E X 35. 50. IOO A N D JETM ASTER 717 happy hours spent dying at Barton Airport in Manchester. RADIO CONTROL NOTES— A HIGH POWER TX 722* The British K.O.G. Record stood to the credit of Gordon Mcrrifield WORLD NEWS ...... 728 of Bournemouth M.A.C. with a time of 9 : 50, since raised to the stagger ing score of 35 minutes by F. 11. Boxall of Brighton. The hand-launched MODEL NEWS 732 Glider record of 3 : 10 by W. E. Evans has gone up to 24 : 30 (tow TRADE NOTES 742 launching was undiscovered in those days), and Bowden held the power GETTING THE BEST OUT OF— 744 driven model record with a time of 12 : 48. Engine capacity was not IN D O O R M O D ELS...... regulated by classes in those far off days, and there was no such thing as GADGET REVIEW ...... 754 a limited engine run—cut-out took place when the hefty tank ran dry. AIRCRAFT DESCRIBED— Mr. D. A Pavelcy held records in the compressed-air classes, a category FAIREY SWORDFISH MK. Ill 756 of model never seen nowadays except when D.A. gives a demonstration C L U B N E W S ...... 758 at an occasional gala. Editorial and Advertisement Offices : Yes, many changes have taken place in models and modellers since 38. CLARENDON ROAD. WATFORO. that first Xmas “ Arromodellkr .and it will be interesting in another H ERTS. Te l. : S44S eighteen years to compare conditions then with our present activities. It remains but for me to wish you all, on behalf of our enthusiastic staff and myself, a very merry Christinas, and all the thermals and contest wins you could wish for in 1954. AVjljftU) vSmmm 708 December, 1953 retaining the total-area/80 formula*, no-one wanted a fixed minimum, the balance of 04] per cent, wanting a free hand on the design of this vital component. (In view of the various " wangles " perpetrated in order to get around the cr< >ss-sect ion req uirements, there seems little point in confining design in this direc tion. Whilst the intention behind the cross-section rule was admirable, many de signs produced in recent years have no consideration for the imposition of such a ruling, i.e., that the model should retain some relative T o o Opinion had apparently been swayed by the The llp&oiu and Walton Downs Conservator*, sweeping success of the Americans at Crantield, Town H a ll, The Parade, indicating that manufacturers in the l \S.A are no Epeotn, longer ignoring the International requirements, Hear Sir, FLYING MODEL AIRCRAFT LITTER and it is little surprise therefore, that no less than 1 !*·*( to kiilonn you that the trainers and owner» of 43 per cent, of readers voted to retain the 2-5 c.c, Woodstock using the Downs arc very much concerned top limit. about the litter, particularly hottlex, which i* left by tly i r% of model aircraft and the fnrndft acuaomnanying them nt weekend*. The? deposit of Utter is, of coof*C. Opinion was again overwhelmingly in favour of an oflrnce under the Byt laws, hut the matter goes retaining the current power and wing-loading, much further than that when the safety of valuable hordes if jeopardised. If you can bring this nutter 64£ per cent, being satisfied with the latter to tho notice cjf votir members by im ludinq reference requirement. to it in any Imllctm or circular it would be much appreciated, not only by the trainers and owners, As expected, the vexed question of fuselage but also by the Conservators who an concerned with the appearance of the Down». cross-section came in for the biggest hiding, for Yours faithfully. whilst some 33$ per cent, voted in favour of Clerk of the Conservator*. December, 1953 709 ssaoμα The Ai:nonoDi:i.LFii IM A*Loa WINNER Of A total area of roughly 350 sq. ins. was felt to be desirable, based on previous performance factors obtained with models of similar weight and power. This is broken into a 200 sq. in. wing and 90 sq. in. tail, which are given fairly high incidence angles on the assumption that models glide at a high angle of attack ; it also provides some “ built-in ” down- thrust. Aerofoil sections were dictated by previous Designed by W. A. Pollard. practice and are " type ” only, since the designer Age 23 . , . married with feels that type is the important thing, minor varia one child . , . a ** Ceordin *' tions having very slight effect. . . . wan apprenticed at With this broad approach settled, the designer then got down to structural considerations, where Blackburn's, Brough, later he scored heavily in points. The model is intended mined to Avro’a . . . THE PAY 10AD DESIGN (ONTEST and the lucid write-up that accompanied the entry, mention should be made of the high standard of the submitted drawing. It was well laid out and completely clear on every part of the construction, as well as being of a standard above many of the drawings by professional draughtsmen received. It was thus no surprise to us when, on the designer bringing his model along to the offices, we found it to be neatly and accurately constructed with a very good tinish. We took the opportunity of photographing it and also seeing its performance, and we are bound to admit that the glide in particular would be the envy of many contest fliers, despite the loaded weight of 14 J ozs. We feel sure that readers wall join in offering hearty congratula tions to Mr. Pollard on a well-deserved win with this very attractive and clever model. F u f f nisr enpir» o f th in 1/5 «cafe p lu n run be obtained price 4 / 6 , poet free, front A-P.S. ψ Ρ ϊ Μ Dnyma 712 December, 1953 1 SIMPLE F1UTTER VALVE AND " ( U R L Y C A R B U R E T T O R ” Coincident with the arrival in (l real Britain of a few choked turns, and after closing the needle down to privately imported examples of the revolutionary L. XI. a bare half-turn open, ran as good as. if not better Cox Space Hug and Thermal Hopper glow engines than, with normal disc induction. There was no with retd valve induction, conies the news of converted standard motors, using this relatively new development. blow-back. On normal porting the consumption Hr tan Harper of Outlaws reports improvement, hut a was 10 c.c. fuel in 150 seconds. With the Flutter tendency to reverse starts with his altered McCoy 29. Valve, the time jumped to 250 seconds, giving an From Bristol we learn of greater team race iappage with a expectancy of up to JUNIOR SERIES FROG * FROG “ MINNOW ·· t o m t it FROG MIRAGE Team R*c«r for “ 50 ", «pan. 10 6 FROG "PUP' J ** , 12" span free- FROG " PO W A VA N l flight racers. \ T h e ideal FROG "WIDGEON" 19" ipai». \ beginner's \ m odels. \ All parts rj \ shaped, if \6 models \ a v a i l · FROG . \ able. "CIRRUS FROG "LINNET ". Π Γ span. FROG " VANFIRE FRO G *J Λ . C/L for " 500 ". " RAVEN ·. I8*»pan. . V The famous FROG \ " Senior ” kits for 18' \ near - scale models \ feature all parts V cut-out. plastic wheels and air- V. screws and 14 _ > ··» easy-to-bulld • t construc- FROG " ZEPHYR / ώ ·ν ν .·ν tion. far ” 50 FROG AM F R O G "G O B L IN super kits Rubber l Powored. are fuliy p re fabricated — with precision cut wood parts, shaped blocks and wing and tail leading and trailing edges, and moulded plastic or metal ac cessories. Ask your F R O G sto ck ist to show you a kit — and see why F R O G q uality Is FROG SAILPLANE. MADE IN ENGLAND BY INTERNATIONAL M O D E L AIRCRAFT LTD MERTON · LONDON S.W.I9 Kindly mention AEHOMODKLLEIt trhen reptyiny to adrertisors SfBig m s m m 714 Dicetuber, 1953 BELGIUM FRANCE ENGLAND · G E R M A N Y HOLLAND BRUSSELS a This important competition was won This is tho E.D. by Dr. Gobcaux with an E.D. Radio Mk. IV Radio Con Queen Aircraft, E.D. Escapements trol Unit, tuned and self made radio based upon reed. 3 channels. E.D. Components. The last word for the control of all Competitors came from England, models which de France. Belgium, Holland and Ger 1 mand progressive, many and in every single cose the personal and ac Radio Equipment used wos based on or curate following of comprised E.D. Components. Remark multiple orders. able testimony to the world-wide Unit Completo ... £23.15.0 reputation of E.D. Products Receiver ... £14. 5.0 RADIO Transmitter and Control Box £9 . 10.0 ALL BRITAIN RALLY at RADLETT. Sept. 20th, 1953. EQUIPMENT 1st. SID ALLEN using: E.D. Mk. II Radio Control Unit. Manufacturers ol a complete Range E.D. Radio Queen. E.D. Mk. IV 3 46 c.c. " HUNTER ” of Radio Control Units from £12 to Diesel Engine. £23.IS.O, to suit all pockets. ORDER THROUGH YOUR MODEL SHOP. L.U. ELECTRONIC DEVELOPMENTS (SURREY) LTD ucfraninuiiu DEVELOPMENT ENGINEERS 1223 I8.VILLIERS ROAD. KINGSTON-ON-THAMES, SURREY, ENGLAND, liintUy mention AEIIOMOIHCLIJCH irlu-n re/tlffinif to tnlreiliners December, 195'.] 715 mill E.D. 46 c.c. BABY ThwMm# Price £2. 12.3 (Water cooled £3 . 16.3) PfRFORMANCe HORNET E.D. 2 c.c. COMPETITION SPECIAL DIESELS (Water cooled £4 . 10.3) MILES SPECIAL Price £8.6.3 (W ater cooled £9. 19.6) E D. 2-46 c.c. RACER E.D. 3 46 c.c. HUNTER (W ater cooled £5.9.3) (W ater cooled £5.9.3) THE ABOVE HOME PRICES INCLUDE PURCHASE TAX. •.U.ELECTR0N1C DEVELOPMENTS (SURREY) LTD « im . w tx u u j DEVELOPMENT ENGINEERS 1 223 18.VILUERS ROAD. KINGSTON-ON-THAMES. SURREY, ENGLAND /»hullff mention Λ EHO MODELLER when n+plyinf,/ to ntlrerlisers AF o p m m «ΟΟΔΟΏ 716 December, IV53 For the small silhouette All who witnessed the amazing performance of the Atom powered Jetex Sparrow at Radlctt—a near vertical climb to over 200 feet—know the Atom 35 as a gem. Thrust j oz. W t. $ oz. JETEX SOB WITH AUGMENTER TUBE For the small scale model A special version of the popular Jetex 50 motor for the long tail pipe type of scale model. The 3-section Augmenter Tube enables tube length to be adapted to size of model. Thrust increased up to J oz. As fitted In ready-made Jetex Delta Interceptor, also seen at Radlett. JETEX SCORPION WITH AUGMENTER TUBE For the large model Most efficient reaction motor yet produced. De velops over 6 oz. thrust! Ideal for contest work and for largo scale models with long tail pipes such as Jetex Hawker Hunter and Jetex Swift SEE THEM—BUY THEM—AT YOUR MODEL SHOP ! Sote manufacturers and world patentees : WILMOT, MANSOUR & CO. LTD. · SALISBURY ROAD, TOTTON HANTS liinilly mention AEItO\lODEI.LEIl tchen replying to aitvertiaera 717 JETEX 35, 50, 100 ENGINE ANALYSIS No. 15 & (NEW SERIES) by Ron W arring JETMASTER /CONCLUDING the series of thrust tests on through lack of cleaning ; both these faults tending Jetex motors, comments on the performance to build up pressure inside the case, aggravating and handling characteristics of individual units are the tendency for the end cap to lift and leak). given under separate headings. Λ number of Unless cleaned with the proper tool or correct wire general observations can be made, however, diameter, the jet hole may be enlarged, when a applicable to the whole range. permanent loss of thrust is almost certain to result. The same thrust-measuring apparatus was used Another common fault with many Jetex users as in previous tests (A s r o m o d k i . l k k , November, is to find that the charge fails to fire, due to 1953), with some slight modification of the improper loading, allowing the fuse to fizzle out technique. before the charge itself has ignited. In this respect The question of consistency in Jetex performance it is interesting to note that throughout the whole would appear of slightly greater significance with series of these tests with several dozen or more the smaller units. Inconsistency, largely, can be different units and something like three hundred caused by one or more of four major factors. There separate runs, on only four occasions was ignition is the variation in individual charges, due largely failure experienced—three with the same motor, ϊn to the fact that to produce these at a reasonably this particular case, almost certainly the motor or low cost fairly generous performance tolerance is the charge was excessively damp. necessary (actually this is of the order of plus or No special care was taken over reloading each minus live per cent.). The fuel has to be prepared unit, except to note each time that the gauze was in batches, individually tested and proved. Like pressed down securely and firmly against- the many photographic solutions, just preparing a charge and gauzes were replaced, on average, mixture " to formula " is no automatic guarantee ever}’ three runs. of an acceptable product. The loss of thrust resulting from a badly fitting The other three factors arc, to a large extent, end cap is most alarming. The initial mechanical under the control of the Jetex user. Kirst—and reaction on the charge firing is for the end cap to this can have a most marked influence is the effect blow open or lift, reseating itself almost at once. of air temperature and humidity. Damp charges, Unless it does re-seat itself with a perfect gas seal, like damp fireworks, are relatively useless. Also some of the expanding gases will inevitably escape on hot days (or with warm charges on cold (lavs) between the end cap and the casing, with resulting appreciably higher thrust figures are realised than loss of useful thrust. Replacement of sealing on colder days. Exposed to a damp atmosphere washers, therefore, is a most important feature of charges do. in fact, appear to attract moisture and successful Jetex operation whenever there is beads of " sweat ” may actually appear on the marked indication of " blowing ". In this respect, surface. those units which made replacement of the cap Ideally, therefore, charges should be kept in a washer easy proved more acceptable than older warm, dry place. On the flying field this would designs, from the point of view of ease of mainten indicate that charges are best kept in the pocket- ance. not in the model box and certainly never laid out on A second, equally alarming feature of Jetex units damp grass. Drying out of “ suspect " charges, is the corrosive nature of the gases generated e.g. by gentle heat, such as on top of a radiator, is when the charge is burnt. Unfortunately this is recommended. something which is inevitable. Rocket fuel is The other major faults which can also lead to notoriously corrosive, setting exacting specifica inconsistency or poor performance are " blow tions for materials to stand up to the job. The back ", caused by improper sealing of the case manufacturers investigated the properties of no (c.g a faulty washer, lack of adequate spring less than thirty different alloys before adopting the tension, etc.) or a blocked or damaged jet (c.£. wick present materials used—an aluminium alloy with core wire not ejected, or a partially blocked jet high hot strength and retaining good corrosion- , ' - * ■*·] 1 i '-· · f '■ ·<* r r. -γλ v- .· Λ 4/ JS 718 December, 1953 g . * § t/p fuse. This method is thoroughly to be fVUM/fy/iLA / t/O ~ //3 fc recommended, both for the fact that it does ensure positive wick ejection and also because it simplifies loading, par ticularly on units with an extended end cap as in the 35, COB and Jetmastcr). * Q Jrfex Atom 35 This is the smallest and lightest of the Jetex units with a nominal or rated resistance properties. Where greater strength is thrust output of g to \ ounce. ll has one or required, a stainless steel has proved the most two different features compared with older Jetex satisfactory material. The whole Scorpion end- units. plate, for example, is to be made of this material. The design is essentially a simple one, which The fact that all parts of a Jetex are subject to makes maintenance and loading easy. The end cap corrosion means that if units are left idle for some has a tapered combustion chamber leading to the time, permanent damage to the metals can result, actual jet nozzle (hole), the external shape of the since the corrosive action is progressive all the end cap making it suitable for use with an aug- while the metal surfaces are contaminated with menter tube. burnt charge. This can only be avoided by a Another particularly interesting feature of the thorough cleaning after use. Dunking the whole ** 35 ” is the hollowed charge. Unlike the Scorpion unit in a bath of paraffin after a day’s flying is to be recommended, which appears to arrest corrosion. Units may then be cleaned down later by scraping, WICK COILED etc., at leisure. Cleaning in soapy water, followed B O T H S ID E S by a rinse in clean water and thorough drying is a O F C A U Z E normal procedure. The unit then requires re assembling with a new cap washer, lightly oiling the ferrous metal parts which arc. in fact, more sub ject to corrosion than the non-ferrous components. These particular features have been mentioned in some detail since their prevention and cure lies entirely in the hands of the operator—and to emphasise that although it has no “ working ** or " moving ” parts, a Jetex engine needs proper maintenance, just like any other engine. The loss of thrust resulting from failure of the igniter wick core to eject itself can be overcome by a new method of loading. Normally the first ex the hollow end of the charge is inserted first, and plosive burst as the charge fires (i.e. the one which it matches up with a dome-shaped bottom shield— momentarily lifts the end cap) also blows out the Fig. 2. The object of this is to reduce the burning fuse core remaining in the jet hole. Here it was area towards the end of the charge and thus prevent noticeable that the units with a large combustion the surge of thrust common with the smaller Jetex space (i.e. a relatively large " free '* volume between units and normal solid cylindrical charges. the charge and the jet) were more effective in On test this feature did appear responsible for blowing out the spent wick (wire). A method of a reasonably flat thrust output curve. ()ccasionally, loading designed to ensure positive ejection is to however, charges did show a momentary peak of terminate the fuse inside the loaded unit—Fig. 1— power at the end of the run, although this was the with a coil both above and below the gauze. A exception. The characteristic thrust pattern is short length of fuse is then inserted from the out shown in the graph, the maker’s claim for thrust side, through the jet nozzle, to contact the main figures being well substantiated, with an average thrust approaching the half-ounce mark. It is difficult to give true figures for the duration of run since the thrust builds up very slowly at first and may take some ten seconds from first light ing the fuse to the development of full thrust. The effective run at rated thrust is between 6 and 7 seconds, on average. Some eight “ 35's ” were actually tested during the series. A tendency to " blow " on one or two would undoubtedly have been improved by a December, 1953 719 slight increase in spring tension to ensure more j>owerful re-seating on the end cap after the initial burst. This is something which the user can readily adjust himself and might well be attempted if signs of leakage occur (indicated by dark stains on the out side of the case). Check first, however, that the fault is not the sealing washer. Sometimes a washer will fail after the first run. Others will last a large numl»er of runs, giving good sealing each time. end caps to use with augmenter tubes, the 5013 The first run is. in fact, probably the most critical, being slightly longer. The idea in making the as far as the sealing washer is concerned. The first 50H longer was to increase the " free ” combustion heating vulcanises the rubber content of the space to give better wick-cjcction properties. impregnated asbestos washer and, virtually, stabilises it. Subsequent failure is then the result All units use the same standard charge and all of mechanical damage to the washer. give substantially the same thrust figures. Average thrust is of the order of £ to $ ounce, peaking to The charges for the " 35 ” were found to be quite $ ounce, or even higher, at the end of the run. In a tight fit in the case, calling for adequate cleaning other respects, the export 50 and 5013 are essentially similar to the 35. .le t e x lO O The 100 retains its original form with turned, instead of drawn case, and rather elaborate triple spring ; although these probably give a higher sealing pressure, it is far more troublesome to load and unload than its modern counterparts. Test figures indicated an average thrust in excess of 1 ounce with an end surge of up to 1J to 1 $ ounce, with standard fuel. Effective duration was of the order of 15 seconds. With Kod Spot fuel average thrust is increased to IJ ounce plus, with effective duration cut to 12 seconds. The 100 is actually being withdrawn from production, in favour of the Jelmaster which develops appreciably more thrust with the same out each time to avoid the fresh charge jamming. charge. 11 has, nevertheless, proved a popular and Some charges, too, have small blobs or projections useful unit over the past few years and many on their outer surface, tending to make them thousands will undoubtedly continue in service. slightly oversize. These are readily rubbed off. All spares, etc., will continue to be available. If a charge jams, about the only thing to do is • I H i n n n t r r to carve it out with a knife, taking care not to damage the soft metal of the case. The charge can, The Jetmastcr features an extended cap, design also, be ignited with a slow burning fuze and ed expressly as a matching fit to an augmenter tube. allowed to burn out, although this may be only partially successful in a damp atmosphere. In any case, this method heats the case and there is a time delay before re-loading until the case has cooled down again. 'Ictox 50 liiifs Some dozen '* 50 ” units were tested in all comprising the new 5013, the original (Standard) 50 and the export 50. Main differences are in the shape and length of the case. The standard 60 (which is to be dropjiod from pro duction) lias a ribbed case. The export 50 and 5013 have nozzle-shaped WERTQ, □ilaimaa 720 December, 1953 Particular care has been given to the design and shape of the combustion chamber with plenty of free space, and the venturi section employed for the jet nozzle. The unit is simpler than the 100 for loading, etc., but features more parts for disscmbly when cleaning and calls for a special tool for clean ing the jet nozzle, working from each end in turn. The latter must be cleaned out after each flight. I f not cleaned, then there is a very real danger of the fuse core jamming in the nozzle and blocking the jet, instead of being ejected. The best that can happen in such cases is an almost complete " blow-back” with little or no thrust. The worst—a split casing. The Jcimaster takes either standard or Red Spot fuel, both of the same physical dimensions but slightly different chemical composition. A higher gas pressure, and higher thrust, results from the latter, at the expense of a decrease in duration time (i.c. a higher rate of burning). Average thrust with Red Spot fuel was consis appear—and however admirable an example of tently of the order of 1| ounce, peaking to 2} light production engineering—the mount supplied ounces at the end of the run. Effective duration for the Jetmaster is virtually useless. It fulfills was some 10 to 12 seconds. With standard fuel the ideal of providing a simple clip-in mount, hut average thrust was If ounces, peaking to 11 to that is all. The unit is barely secure and there is 2 ounces. Effective duration in this case was around no guarantee of obtaining a consistent thrust line 15 seconds. setting each time. This has been apparent on the Standard fuel will no longer be available after Hying field where contest modellers using the present stocks arc exhausted. Red Spot, with its Jetmaster have employed own-design mounts—a improved performance, will then he the only fuel typical example being shown in Fig. 3. available for both the 100 and Jet master. Another Another point is that the ” wick injection ” point of interest as regards fuels is that owners of method of loading is the only satisfactory method of old Jetcx units—or of old standard fuel—may find loading the Jetmaster. Fiddling an over-length they get lower thrust and higher duration figures piece of wick through the inside of the combustion than those given by the test results. All ” standard " chamber and into the jet venturi is too trying on fuel—and this applies to all sizes of fuel has been one s patience. Another point is that it would be of revised composition for the past ten months or so nice if some of the nine or more separate parts giving higher thrust and lower durations than forming the main end cap could be eliminated or previous " standard ” fuel. re-designed for greater case of disscmbly for Since the Jetmaster is undoubtedly one of the cleaning. most popular units to consider for contest work, Some data on the effects of augmenter tubes certain points must come in for criticism—mainly Jetex units will be published in an abridged report the method of mounting. Interesting as it may next month. Η .I*, list ; i v a i r s T l .i · . II. p. M o d e l S u e DikicrtsioNf “ a M DC t i> Δ 4 x Δ i f y s , w P 2 | ά 01 r J u t r x o a c Ο « V A „ 6 . O U ti « 2 < Q * g « C * * r. « 3 " E 7. 5 * § < 2 s -β ; · β >U-' δ c A. φ I ATOM “ 35 ** i 5 ;.1 2 3 / 3 2 i i •00375 6 2 - 8 1 - 7 - 8 10 12 1 16 9 / 1 6 0 0 2 5 - 0 0 5 8 4 4 2 6 0 ( S t a n d a r d ) . . 2 3 /0 4 i 7 01 M •0025 0 0 5 - 7 *2 - 3 8 - 11 lf> 1 2 -1 6 U 1 ! 1 1 /1 0 DOS •0 0 6 2 5 9 4 5 • M M H x p o r i ) 1 0 /0 4 3 /JO 7 ,6 4 F t •0025 0 0 6 - 6 0 - 3 0 - 1 0 -1 2 1 2 -1 0 1 * M 1 - 0 0 3 *0002 5 7 4 3 7 5 0 n 21 /04 7 /3 2 7 /0 4 1 i •0025 0 0 5 - 6 6 - H-3- 1 0 - 1 2 1 2 -1 6 u u 1 - 0 0 3 ■00625 8-2 4 1 - to o ...... 1 1 1 l - U 0 0 5 •0 1 - 8 8 - 44- 14 15 16 24 8 2 .5 / 1 6 1 -•ooo •0126 1 1 0 5-5 JHTMASTBR .. 1 5 /1 0 1 1 /1 6 1 i l U •(MH> 0176 0-2- 3 1 - 1 2 -1 5 2 0 - 3 0 «1 31 1.1/10 •0005 - 0 1 9 6 7 3 35 December, 1953 721 M 2 0 722 December, 1953 Vwrrc,}· RADIO CONTROL NOTES fc©»I«tAL X ip, ' -:>AC€ -**■'■*f i Howard Boys describes his HIGH POWER ; MOTOR TRANSMITTER 456NERAT· UITE a number of people have taken an interest tube. A suitable thickness of string should then in the writer's transmitter, and others have at be wound between the turns to space them to give times asked for details of a complete transmitter. a length of coil of just over an inch. The ends of This one is made mostly from government surplus the wire should be left about in. long, and bent equipment which is still obtainable, and has given at right angles. Either enamelled or tinned copper trouble-free service for nearly four years. All that wire can be used, but if enamelled, these legs has been necessary has been to keep the six-volt should he cleaned and tinned. The K.F.C. can be accumulator charged, and since this is done at made by winding 70 turns of thin insulated wire home the cost of upkeep has been negligible. on a j in. former. The most convenient wire is The circuit of the oscillator is given in Fig. 1 28 or 30 s.w.g. double cotton or silk covered, but and is as simple as possible. A drawing of the enamelled will do. The former can be made from panel is shown in Fig. 2, and this is made from paper, gummed and wrapped round a pencil or aluminium of IS or 20 s.w.g. The only insulation required is the coil mount, and this is of paxolin about 1/16 in. thick, and is shown in Fig. 3. In the writer's case, this was taken from the ex-gov ernment 7 pf beehive condenser used for the A bromodellkr hard valve receiver, but any odd bit will do. This is bolted to the aluminium panel so that the eyelets appear in the centres of the 7/16 in. holes. A 6 B.A. bolt is used, but if the centre hole is larger than £ in. as is the case with the paxolin from the condenser, a large washer also will be required. The tuning coil consists of ten turns of 18 s.w.g. wire, wound on a paxolin tube l in. diameter, but a few layers of gummed paper could be wound on the cardboard tube of a No. 8 battery to serve, or the tube could be made entirely of gummed paper if the paxolin could not be obtained easily. If the wire is wound first on a No. 8 battery, it will stay in place letter on the TUNING COIL similar rod. The valve is a 6C4 and is obtainable new, or ex-government. Price ex-government about 8/-. The other conqxments are best pur chased new since cost is low anyway. They are :— Cl 30 pf Beehive, or concentric. C2 100 pf silvcr- mica. C3 I mfd 350 volt working. HI 4,700 ohms } watt. Valve holder B7G preferably ceramic, though paxolin or amphenol will lx.· quite all right. A metal clip is needed to hold the ·1 mfd condenser to the panel, and four 6 B.A. screws and nuts for other parts. As can be seen from the photographs there is very little wiring up to be done. 18 s.w.g. wire should be used for rigidity. Ordinary coloured plastic covered flex is used for the battery leads. The link coil is just a piece of single flex, plastic covered, wound twice round the December, 1953 723 tuning coil. The ends can be bound together with a rubber band or thread. In the writer's outfit the link coil and battery leads are taken to plugs which connect with sockets in the case. The power supplies for tins oscillator are N/ obtained from a rt volt accumulator and motor generator, both ex-government. The accumulator AERIAL consists of three 2 volt cells connected together, and COIL the motor generator is a 20 watt type arranged for 11 volts input to give an output of 480 volts 40 , LIN K C O I L milliamps. With an input of 0 volts an output of / 280 volts at 25 milliamps is obtainable, a matter of 7 watts, which is more than we are allowed. To OSCILLATOR L IN K C O I L cut this down to 6 watts, a resistance has been put in the β volt lead to the motor part, though it would be equally effective to put a resistance in the H.T. output lead. The value of such a resis tance will need to be found by trial. In the writer’s case it consists of about 1 in. of wire from an old r g s electric lire element. The actual current drain from the accumulator is about 4 amps, on load, with or without this resistance. A little thought was given to the construction of the box to ensure adequate strength. All the (C C T S M X tO IN THSM weight would rest on the bottom, ami this had to NOUS be transferred to the handle. By extending the sides to the level of the underneath of the bottom, ·' DlA. OR CAN M screws could go through the sides into the bottom, LAAOEA W ITH WASHER and thereby take the load in shear, the strongest way they could be used. Using a strap for a On the particular motor generator used, the carrying handle enabled it to be fixed to the sides shaft extends at one end and has on it a worm or with a clamping plate and screws, this also being screw thread. A small gear wheel was found that very strong. The partition isolating the accumu would mesh with this and has been used to drive lators, being near the middle would prevent the the proportional mark-space switch. The pulse box distorting. All that was needed then was a speed given by this is a bit slow for proportional removable cover for each compartment, and ply control though it does work very satisfactorily. The wood or hardboard is suitable for this. To avoid effect is merely to wag the model slightly in straight the necessity of a spike stuck in the ground for an flight. The pulse speed is however very convenient earth, an aluminium plate was screwed underneath for tuning in receivers when working alone. A the bottom, and a bolt right through is connected socket is also provided so that a push button or to the earth side of the transmitter wiring. An other switch can be used instead of the built-in ex-government whip aerial mounting was fixed to switch. Also in this socket is a pair of connections the top of the box, to hold a collapsible whip aerial. direct to the accumulator, which can be used for a The particular type of aerial is not available these supply to drive an external pulse switch, and for days, but the next best thing is a number of rods charging the accumulator. The wiring for this 12 in. long each, which will plug into each other. power supply part is given in Fig. 4. If the mark- TUmpitnition of com pint c iiI m o n I h c " lo p " H ide. space switch is not used, the external socket con nections can have a push button plugged in. This is also a convenient point in which to plug a meter to measure the H.T. current. A wooden box was made to hold all this trans mitter equipment, the size being determined from the following considerations. The accumulator cells were 2$ in. square by just over 7 in. high. The motor generator with the built-on switch was 9} in. long 3£ in. wide and 4 in. high. The oscillator was 3J in. long, and 3 in. high. A length inside of 9$ in. then would clear the motor generator and the three cells. A height inside of 7^ in. would clear the cells and also the motor generator with the oscillator above it. The width required would be 3 in. for the cells, plus £ in. for a partition, plus 4 in. to clear the motor generator. η a ; β 724 December, 1953 “ field strength " of this meter comes in. These c i R I LINK COIL LEAPS adjustments should be made with the meter and transmitter on the ground, with hands and body- kept well away from the aerials. The photographs show a view of the inside of the motor-generator and oscillator compartment, and two views of the oscillator. A fairly full description has been given so that anyone can build a close copy, even though identical com ponents cannot be obtained, particularly with regard to the motor generator and accumulator. The Holton lloroiver Mr. C. H. Lindsey, the Hon. Sec. of the Inter national Radio Controlled Models Society lias sent IHs/ntsM tun of roniponrtdH underneath the tnouniing plate. an interesting letter regarding the Bolton receiver These are available at as little as 2d. each (plus described in the May Akromookuler. He writes : postage), and nine are enough. Also available are *' In the diagram of the quench coil, half way sonic telescopic dinghy mast aerials that extend down the left hand side of Fig. 2, the ends of the to alxiut 7 ft. 6 in. which have been used success coil Nos. 1, 2, 3, 4 are marked as 'outer,* ‘inner,’ fully by some people. The aerial length required ' inner,' ’ outer ' respectively. Two of these have is about K ft., though it can lie a little less. been marked-wrong way round, because if the coil Connection to the aerial can lx* direct from the is connected that way the receiver will not work. link coil on the tuning coil, one end going to aerial Whilst on the subject of this receiver, you may and the other to earth. A slightly more efficient l>e interested in the results I obtained with it. method is shown in Fig. 5. The aerial coil has 9 turns once the connections to the quench coil had been on a former similar to the tuning coil, but should put right. However, in the course of quite a lot of be tapped at 3 and 6 turns. The 100 pi. con fiddling about with it. the grid leak (2 megohm) got denser is ex-gov. a ceramic trimmer and actually connected to earth, and the quench condenser was marked S 115 pi. but a vane type will do quite changed to -003 mid. I did not do enough fiddling as well, and in some ways is more convenient. The to be sure that these changes made any' real link coil is 2 turns again like the link coil on the improvement, but I mention them because the set oscillator. The aerial is attached to one end of the was eventually tested in that condition. Other aerial coil, and the condenser to a tapping. The wise it was the same as in the article except that best tapping and setting of the condenser is found 03 volts I I T. was used, and a 3S4 valve. by trial To do this a frequency, or field strength Adjustment of the 30 pf condenser produced a meter is best, one such as that described in the sudden increase of current from 2 to 3 ma. at one Dec. 1950 Akkomodkllkr being just the thing for point. I f it was set at 3 ma. there was no hiss in the job. Something of this sort is required anyway the receiver, and the current dropped to I ma. on for tuning the transmitter in the first place, and signal. If it was set at the 2 ma. position, the for frequent checking. current dropped to 1 ma. on signal, but on the Tuning is carried out by selling up the meter a other hand the range of the receiver was appre foot or two away from the transmitter, and tuning ciably' greater than with the other adjustment. condenser Cl to give maximum deflection of the Thus one can have a big drop with a short range, meter needle. After first finding the approximate or vice versa. Now the point is this, that at the position it may be necessary to move the meter 2 ma. s<‘tting, the usual hiss was heard, whereas further away. With the meter at a set distance, this was not so with the 3 ma. setting. Therefore, the tapping on the aerial coil and setting of the with the 3 ma. setting, the receiver was not acting as 100 pi. condenser is then adjusted to give the a super-regenerative receiver at all, and it is doubt greatest reading on the meter. This is where the ful whether it ought to be called such when used in this way. The transmitter wasthe usual arrangement with two 3S4’s. input I · 14 watts. Quarter wave aerial Range measured along a main road in a built-up area, with sundry trees, etc., around. The range with the 3 ma. adjustment was 570 yards, and with the 2 ma. setting 1,140 yards. Receiver aerial was about l foot vertical. The superb aerotHitle performance of Jean Fierro (•'oberniiJ*'* conrerted Itadio (jure·»* in note famous ihrouglunti Europe. Works' end im shnirn here. Fin in fixed io n iletachablc tail phi nr. und vend ruts linked to actuator* by flexible trln·*, Fie rotor cutairuy permit* rudder movement plus up flriNilor, or alierttatirety, n steep M doirn " angle. (iotycanr has #2 much mar hi tie», fdth slight coni to! roriation in e a c h · December, 1953 725 g M WHAT ARE THEY! Test your aeromodelling knowledge by : identifying these eight commonplace Items photographed in Raymond Cripps’ work- shop. Answers to be found on page 767 iBSBaaa MD30MJ] 726 December, 1953 1053 Contest A verage "Fables (Qualification : minimum of three contests entered) H i i b b r r (Gamage, Farrow, W e «to n, M od·! Aircraft, W akefield T rial·, W akefield, Area Championships, Flight, U .K. Challenge Match) 3-Minute Contests S-Minute Contests Overall Performance | w Name C lub o •Λ V V & 3 a 3 3 -C X 3 s X £ 3 I E 3 E t* 3 3 s 0 M w if £ £ it Cf O £ C < £ “ ■< <3 CL· 1 D . S U G D E N Loughborough 1 3 9 : 00 3 : 00 2 6 26 : 52 4 : 29 3 9 39 : 00 35 : 52 91 2 H. O’DONNELL W lm .f.e ld 6 17 47 ; 10 2 : 46 3 9 39 : 40 4 : 24 9 26 96 : 00 86 : 50 90 3 J. O’DONNELL W hueficld 6 17 44 · 28 2 : 37 3 9 40 : 07 4 : 27 9 26 96 : 00 54 : 35 88 4 E . M U X L O W Sheffield 2 6 13 : 07 2 :1 1 2 6 25 : 18 4 : 43 4 12 48 : 00 41 : 25 86 5 W . R O C K E L L Lincoln 2 6 18 : 00 3 : 00 2 6 23 : 18 3 : 53 A 12 48 : 00 41 : 18 85 6 F. H O L L A N D Swansea 2 6 17 : 26 2 : 54 2 6 21 : 57 3 : 40 4 12 48 . 00 39 : 23 82 7 E. W . EVANS Northampton — _ 3 9 36 : S9 4 : 06 3 9 45 : 00 36 : 54 82 8 P. ALLAKF.R Surbiton 5 14 36 : 45 2 : 38 2 6 21 : 02 2 : 30 7 20 72 : 00 S7 : 47 80 9 R . B A L D W IN Wigan 2 6 14 09 2 : 22 2 6 23 : 06 3 : SI A 12 48 : 00 37 : 15 78 10 R . C O P L A N D N . Heights — — — —· 3 9 33 : 17 3 : 42 3 9 45 : 00 33 : 17 74 II E. B E N N E T T Croydon 4 II 27 : 42 2 : 31 2 6 18 : 42 3 : 07 6 17 63 : 00 46 : 24 74 12 R . PA R H A M W o rcester 1 3 7 : 34 2 : 31 2 6 20 : 28 3 : 25 3 9 39 : 00 28 : 02 72 13 B . H A ISM A N W hitcfield 1 3 7 : 52 2 : 37 2 6 19 : 40 3 : 17 3 9 39 : 00 27 : 32 71 14 J. PALM ER Croydon 1 3 8 : 57 2 : S9 2 6 18 : 08 3 : 01 3 9 39 : 00 27 : 05 70 IS P. BISS Littlco ve r 2 5 14 : 05 2 : 49 2 6 17 ; 29 2 : 55 4 II 45 : 00 31 : 34 70 14 1. D O W S E T T W . M.ddluex 3 S 20 : 27 2 : 33 2 6 17 : 04 2 : 5 . j 5 14 54 : 00 37 : 31 69 Power {Ham lcy, Astral, Koil, Shelley, Power Trial·, W orld Championship, Area Championships, U .K. Challenge Match) 3-Minute Contests 5'Mmute Concern Overall Performance O • 1 N a m e C lub • c & 2 H & 3 *3 s »-· £ X ? x 0 l X 5 j u E e o u E M 4) E M 2 o > UL H £ > δ £ s * - m δ < δ £ < CL CL· 1 P . B U S K E L L Surbiton 3 8 20 : 17 2 : 32 3 9 35 : 44 3 : 58 6 17 69 : 00 56 : 01 81 2 G . F U L L E R St. Albans 1 2 2 : 36 1 : 13 3 9 34 : 13 3 : 48 4 II 51 . 00 36 : 49 72 3 E . H O R W I C H W hitefield 3 8 17 : 09 2 : 09 — — — — 3 8 24 : 00 17 : 09 71 4 S. IANFRANCHI Leeds 4 12 26 : 28 2 : 1 2 2 6 18 : S3 3 : 09 6 18 66 : 00 45 : 21 6 ? S N . B U T C H E R Croydon 1 3 7 : 34 2 : 31 2 6 18 : 12 3 : 02 3 15 39 : 00 25 : 46 66 ; 6S 6 P. C A M ER O N Croydon — — — — 3 9 29 : 04 3 : 14 3 9 45 : 00 29 04 7 A. COLLINSON Bradford 3 9 14 : 43 1 : 38 2 6 20 : 07 3 : 21 5 15 57 : 00 34 : 50 61 8 J. H A N C O C K Surbiton 1 3 5 : 03 1 : 41 2 6 18 : 49 3 : 08 3 9 39 : 00 23 : 52 61 9 R . M O N KS Birm ingham 3 B 14 : 45 1 : 51 1 3 8 : 46 2 : 55 A II 39 : 00 23 : 31 60 10 G . U PSO N Regents Park 3 8 15 : 32 1 : 57 3 9 24 : 36 2 : 44 6 17 69 : 00 40 : 08 S8 S7 II R . W A R D Croydon 1 2 2 : 44 1 : 22 2 6 17 : 55 2 : 59 3 8 36 : 00 20 : 39 55 12 A . W R IG L E Y W hi«*fi«ld 3 9 14 : 14 2 6 16 : 53 2 : 49 8 IS 57 : 00 31 : 07 1:35 Glider (Pilcher. Trials, Thurston, C.M .A., Area Championships, Model Engineer, U .K. Challenge Match) 3-Minute Contests S*Minuce Concern Overall Performance J •4 e o J Name C lub M & 8 * 3 3 1 X ■3 E X c X l l 3 § E w m UJ V M o > 1 > LU ul Com ps ε U < Com ps < F i 80 1 A . B R O O K S Grange 3 8 18 : OS 2 : 16 1 3 13 : 01 4 : 20 4 II 39 : 00 31 : 06 70 2 G . M . B Y R D Loughborough S 14 29 : 40 2 07 1 3 15 : 00 S : 00 6 17 S7 : 00 44 : 00 77•n J . L A M B L E W . H erts. 3 8 19 : 19 2 : 25 MM __ — 3 8 24 : 00 19 : 19 J 74 4 G . LIN F O R D Loughborough 3 9 16 : 44 1 : 52 1 3 14 : 16 4 : 45 4 12 42 : 00 31 : 00 74 5 R. YEABSLEY Croydon A 12 29 : 32 2 : 28 1 3 7 : 57 2 : 39 5 15 51 : 00 37 : 29 73 6 8 . B O W E R Salford 3 8 20 : 14 2 : 32 1 3 8 : 21 2 : 47 4 II 39 : 00 25 : 35 71 7 L . LE A D E R W . H erts. 3 8 18 : 51 · 2 : 21 1 3 8 : 46 2 : 55 4 II 39 :0 0 27 : 37 6AA? 8 D SU G O EN Loughborough 3 8 18 : 26 2 : 18 MM — — — 3 s 24 : 00 18 : 26 9 M. TH O M A S Blackpool 3 9 18 : 29 2 : 03 1 3 9 : 14 3 : 05 A 12 42 : 00 27 : 43 66 MM 21 50 66 10 B. FAULKNER W . York». 4 II 21 : 50 1 : S9 MM — — « II 33 : 00 : II P . A L L A K E R Surbiton 2 5 I I : 26 2 : 17 1 3 8 : 20 2 : 47 3 5 30.00 19 : 46 66 Eliminators for 1954 contests are not included and will be used to compile '54 averages. 727 ΗΚ 1953 average tables arc To see Pete Buskcll topping the power tabic is no Τ given in a slightly different surprise. One of the most consistent of contest form to previous years. In view power flyers over the past few years Pete jumps of the fact that a number of from third last year to an easy first this. Nor is it this year’s contests have been any further surprise to find George Fuller second to run to a 3-minute ilight maxi him. These two held British honours high in the mum. whilst others have been World Championship event at Cranfield. to a 5-minute maximum, flight Horwich of Whitfield is no newcomer to the aver averages no longer remain a ages tables either, although he has stepped up his true assessment of overall per last year’s performance considerably. Few. too, will formance. A man who con fail to be delighted to see Silvio Lanfranchi so near centrated on the 5-minute the top. Any important post-war power contests events should, in other words, without Silvio taking an active part has been some maintain higher average flight thing of a rarity. lie will also be remembered as the / V lr 11 tin Kelt and time over the season, although hin now fhmouM proxy flyer of Wheeler’s model which brought the “ S lir li S t i r It " , on comparative merit his per World Power Championship Cup to Britain in '52. top in power. formance may lx; lower than a more modest flight average gleaned all on 3-minute Club merit in this table would appear to go to contests. Croydon, with three in the list. More than half of Overall performance is therefore computed on the listed names arc from the London area. Rubber the basis of the percentage time achieved (i.r. actual honours were more evenly distributed, although in flight aggregate as compared with a " possible ” previous years London has score), whilst individual averages in the two types tended to dominate this par of contests are noted rather more as a matter of ticular category. interest than for direct comparison. Loughborough College is A qualification for inclusion in the tables is a undoubtedly the glider centre minimum of three contests entered. Of the three, of the year— two members in the rubber averages table should l>e reasonably the ’53 Nordic team and three complete ; there may well be several omissions in in the averages table. To Tony the power table with the likelihood of even more in Brooks of Grange, however, the glider table. The top placing», however, are goes top honours with an 80 unlikely to bv affected by any “ qualifying *' per cent, score in only three performances which may subsequently come to contests. Possibly better light. The task of completing the averages tables known for his success in the in the short time between the close of the season power field, Tony Brooks is, and the printing date of the December issue is a nevertheless, one of our best difficult one. Some one hundred different names all-rounders. were analysed in completing each of t he final tables ; Compilation of the glider table has l>een but even so. some worthy of inclusion may well made more difficult by the cancellation have been omitted. To these gentlemen we can of the S.M.A.E. Cup results—the Trials only extend our apologies and emphasise that any Eliminator—due to a different interpreta such omissions arc entirely accidental. tion of the rules by different areas. (Actually For the first time since the A f. r o m o d e u .f. r there was considerable confusion at the start average tables have been published the rubl>cr of the contest season concerning many of the results show an almost complete change. Top of new rules attendant on 3-minutc maximums, the list is D. Sugdeu of Loughborough College, with new towline lengths, etc. Nor is tins problem a 92 per cent, possible score completely cleared up. A few areas submitted achieved in three major con three flight totals for the '54 eliminators instead of tests. Close, very close, behind five ; hence immediate clarification of the current coinc the O’Donnell brothers, rules appears a matter of pressing urgency.) Hughic leading John by a Eliminating the S.M.A.E. Cup results has also matter of a couple of minutes meant the elimination of several top line names aggregate out of a possible 96 from the list, simply because they did not then minutes total. The O’Donnell's compete in a minimum of three major contests. too, have flown in more con To have computed the averages on only two tests than any other rubber contests would have been unfair to the four-, fivc- flyer this year, including the and six-contest contenders. World Championship, Area Championship and IJ.K. Chal Hence the glider tabic is not as satisfactory, lenge Match events. There is nor as comprehensive as we would like to have- every chance that they will made it for an accurate survey of the season's again be Senior and Junior activity. Be that ns it may, however, the men Champions this year. listed have well earned their places. pden, top of the rnblwr flrw proxfi for Hewlhton Zealand) at < r a n fie h l. νΤ^'Γ- ■ December, 1053 World News ΤΥ/ΉΑΤ lms happened ? Practically every W foreign picture received in the past month has been of a glider, and this from all quarters of the world. 1 lave we gone glider-happv ?—or is it an enforced economy ? Anyhow, there is enough variety in the seven wc have chosen to publish to give you f (ilish'r irith the extra long none moment is to he seen regularly in Germany. Construction is mostly of spruce ansi hitraicood* . Hetou? it is a M \ Ictor 99 style crescent w ing ssnst tssfi glister fro m H olland. 10 ft· ajhim, and matte by a metnber of the Scheveninycn Club. Helotc left : Karl Heinz Denzin ssnst his experimental A /l rtssss glider. which lists It niim iofirr wing positions, high, mid or low. High is Iwst, he reports. Helotc right : Wolfgsmg fwitliug9s amazing glister. presumably Infiuetseed by the Huchenhcim 99 K in g 99 ra ring tracts. I.efl ; M aurice H odittrr of Switzerland anil one of the very efficient typical t rench / Swiss tailless design* he developed. High! : Canard by J. Hartn-y of leery shore* originality. Heading opposite in the m agnifi cent Sieis* site at lA>*torf ftH ten for slope soaring. firm a in grand style. Sounds like you don’t have to In Africa, the MATABELELAND M.A.C. use any d ft fuse at all in those parts. Sgt. Heard! ill·· recent 4th RHODESIAN Just a spot of oil on the rubber bands ! In cooler NATIONALS. (It’s summer there right now climes of SWITZERLAND, they had a relatively though they seem to hold their Nats in mid late Nationals this year: but judging by the winter!) Bill Heckler turned up 125 m.p.h. in results they were hotly contested, no less than 101 Claes D speed which is reckoned to lx? good out entries in the glider class alone, and remember the there considering the 4,500 ft. altitude, while modelling movement is small by comparison in another A.P.S. Ambassador collected 1st in stunt. Switzerland. Here's a lesson too—the last six One novel event, we Ixdicve it is unique to the places in glider were filled with single 300 second Rhodesian meeting, is the team relay race. Class A maximum* and no other flights recorded—who models are flown over 80 laps and then swiftly forgot to fit a d ft ? ditched and the same crew take over a Class it model for another 160 laps. Depends how ruthless Across the Atlantic to CANADA, where the the competitors are, as to how many models Nats, were held most successfully in the manner of actually finish : but it must be quite an exciting an Area semi*centralised event as in Britain. raco while it lasts. We gather that, with the A number of competitors from the neighbouring removal of the R.A.F. training scheme from L'.S.A. seem to have collected all the speed prizes, Rhodesia, the movement there will be sadly but the Canucks had their own way in free-flight. depleted. Let’s hoj*; the civvy boys will have Among the glider placings was Ernie Currington caught on enough to keep the modelling flag at 6th in A/2 : Ernie is one of the many active flying. One of them, H. Dimmock of llunvani British modellers to have emigrated to the New Poort Dam, is most active with free flight float World. Interest is reaching a new high in Inter planes and his scale Aeronca with D.C. 350 has national Wakefield and Power in Canada, now that recently amazed the locals with regular acrobatics the finals are to l>e held in the L'.S.A. in ’64. that result from a warped tailplane. Apparently An East Zone of GERMANY sport and model the same take-off, half-loop, half-roll evolutions ling paper reached our post-box the other day, and are followed every time and were so entertaining among the illustrations we found a view of a that Mr. Dimmock is reluctant to fit a properly Berlin May Day parade including a marching true and flat tail. squad of aeromodcllers, each with model at the slope : but shame on them, no two models were Helou· left: Mr. 1.relic. Chairman of the Matabeteland t lull, anil Id* A.P.S. Iraru* * tauter. Xote the tuke-off alike ! Acromodelling seems to be a recognized dolly. Itight : Heim lira»* of (Jermamy like* the A.P.S. cultural sport east of the Iron Curtain. Pnogeboy design and ha* fitted hi* irith a I t 'e b r a d ie s e l. iiMjjfUiJ?:! 730 December, 1953 Cfjnstmas. . . time for reflection With the traditional goodwill to all men, the Editorial Staff draws your attention to points you might overlook in the ah—warmth of the moment when the mistletoe stems cease to remind you of Igor Sikorsky and become, instead, the potent allies of that original omithopter, Dan Cupid. FI For ladies, there is “ Modelholics Anonymous ”, which also gives gentlemen an insight into the female view of our innocuous pastime. A further warning is contained in “ More Deadly than the Male ” ; finally, we suggest a suitable gS form of insurance in answer to this—to be suitably framed and hung In a gj conspicuous position . . . MODELHOLICS ANONYMOUS — V^OU probably realise that model airplanes are here to stay. You also know that hobbies arc very important to certain people, almost as much as those a w ord o f people are important to you. Honestly though, you never thought hobbies could mean so much, did you ? advice by When you first learned of this addiction, you looked with fond amusement upon his hobby, and. being a woman, you assumed an air of great interest and Ida November respect, which of course made him love you more . . . as you knew it would. But, when you finally got your man, you didn't expect you had married the hobby also. As you can now see, being a wife (or mother, or sweetheart) of a model builder brings forth a serious problem of emotional adjustment ; the power collection of these magazines are usually kept in a large of love must bo very great indeed to transcend such corrugated box which mellow? through the years. The barriers. For the help of all females attached to these older the box. the greater the man. Special note to addicts, and for the go MORE DEADLY THAN THE MALE — a grim warning by G. C. Stubbs * 'M not going round the bend, honestly of new sport jobs, while my fianc0c watched the clock I'm not. It's only recently that I’ve and plied us witli endless questions. Inured «as we are Igot into the habit of glancing nervously to queries of the " what’s that funny man doing that over my shoulders. My hands tremble and for. Daddy ? " type, we were soon reduced to nervous I’ve developed a twitch in my left check. wrecks trying to explain why wc flew the kite nose In fact. I have all the earmarks of an aero- first, why wc didn’t turn the wings upside down and mod haunted by a wife interested in her why the " elastic " was preteneioned. In dcsjicration, hubby's hobby. For the benefit of those bods who I gave the garrulous girl an old chuck glider and orders may be thinking of acquiring a wife this summer, in to repair to the farthermost corner of the field. It says stead of that new 5 c.c. " Glow ", let me tell you how I a lot for female adaptability when I assure you that got into this sorry state. within half an hour the two new sport jobs languished It began on a lovely warm day, early last Summer. under a hedge while their owners gaped at an aston Brother Bill and 1 were thermal bashing with a couple ishing repertoire of flick rolls, bunts and upward December, 1953 731 Charlies performed by the female flung solid job. trudged off to the workshop That was only the beginning. On the next Saturday, to drown our sorrows in Joan was the proud owner of a kit, and the small drink. duration model (much modified on the advice of the Since that catastrophic two experts) flew a week later. Much to the surprise day. the winner has become of the experts, it flew very well. To our unbounded Mrs. S. and my leisure hours relief, the next few flying days went by in an atmos arc spent listening to plans phere of peace and quiet, with the two experts only for C/L Stunt and Team too willing to pour a kindly word or two of advice in Haring models, with a small the novico's receptive car. Alas for such comradely pinch of Wakefields and solicitude ; the hands that fed were well and truly Hadio Control thrown in. bitten when the novice, aspiring to even greater 1 even hear of inter heights, proposed a three cornered contest for the best planetary travel, rockets, duration, to be held on the following Sunday, no holds escape velocities and barred and the drinks on the losere. synergic curves. 1 lence the Hill and 1 bodged up two old models of similar size nervous glances, troinbling to Joan's during the week and Sunday afternoon saw and twitch. the three antagonists, with models ; Lobengula, the And what is more, I've pet cat. and numerous onlookers arranged in artistic actually seen my wife's groups around the flying field. A quick draw for flying model fly with its wings on order and Hill opened the proceedings with a deft hand upside down. launch. His model climbed steeply, too steeply, stalled and hit the deck nose first. Uesult: one bust I think . . . prop, a grin from Joan, and howls of derision from the onlookers. Joan stepped forward and sent her model off on a perfect circling flight of 36 seconds. The experts breathed sighs of relief and condescendingly bestowed n few words of praise. " Not bad for a small job—but just wait until the boys got going.” The second boy got started with a daisy-cutting flip of 12 seconds. The kite landed near I^obcngula. who thrust his paws into the tail surfaces in an ecstasy of feline destructive ness. Again roars of derision from the onlooking rabble Armed with a new prop. Bill's model was launched, danced around for 20 seconds like a mayfly with the D.T.'s and finally plummeted into a hawthorn bush to go the way of all write-offs. The experts tried to cover their confusion with murmurs of “ Kxcess anti macassar effect ’’ and " Too much enough bilateral hemispherical stability ”, while Joan clocked up 33 2/5 seconds with effortless ease. My model did a duck-like 27 seconds. In a state approaching panic Hill dug " Klunkhcad ” eut of honourable retirement and, after a hasty check and a rubber transfusion, the battle-scarred veteran was hurled into the blue. It touched down to the tune of 30 seconds—smiles all round from the experts. Joan merely suggest ed that it should be flown with the wings on upside ijXREETINGS modellers every where. To those at home in Britain, our festive wishes conic a trifle early ; hut for our overseas brethren, the ΑκκοΜοπΕ! i kk arrives nearer to the Christmas date so to them especially do we offer our hopes for even bigger and lietter modelling activity in the new year ll>54. Our choice for Model of the Month is Corporal Pulford's (R.A.F. Colemc) idea of the ideal full- size fighter. A Jetex 200 is mounted amidships in the double skin fuselage which is made by- placing circular formers over a I ':12ml tube and then planking the outer l/lflth skin. Span is M2 ins., and length a mere 10 ins. Cpl. Pulford reports, however, that a smaller tail and longer tail moment will simplify trimming the Mark 11. Ten c.c. team racers have often been discussed in our columns and we have occasionally heard of activity in this direction in Britain. At the All-Britain rally' we managed to track down J. Horne of the Wimbledon Club, seen in \, who was awaiting the opportunity to check out his class " < " design. A McCoy on series 20 sits under the red and yellow cowl, and (U) c.c. tank is just waiting to be topped up for a first race. What about it, other modellers ? Area, bv the way, is 175 square inches. E.l >. Barks, secretary of the \\ are A-1 >.M.A.C. is featured in 2 with Ins new " follow the flow " wing rib arrangement. Ribs are split in two and twisted, result, added strength, and. Mr. Barks claims, the ribs follow the natural tangential airflow on top and bottom surfaces. Tail is interesting too. In 3 we have yet another novelty from that man Snodin of Northampton This is a tractor canard with an K.I). Bee on a movable centre pod, and we wouldn’t be in the least surprised if Mr. Snodin turned up with it as a Payload entry when the big Aeromookllbr 1 c.c. class contest comes off in ’54. Now one without any kind of a tail, and which thousands December, 1953 733 m m m MODEL OF ^ THE MONTH Observed at the All-Britain Rally, making countless stable flights in the stiff breeze. No. 4 is T. Hargreaves and his flying plank which he built with the co-operation of Jim Torode. An E.D. 3-46 with acute down-thrust provides the power Over now to top right, where in picture 5· J McArthy of the " South- end Seniors Club ” shows off his near to scale Cicrva C.40 Autogiro This job is not quite finished, and we cannot report anything on fly ing performance ; but we note the increased blade chord and light weight at 8 ounces, so Mr. McArthy is reasonably assured of success. Kotor diameter is 36 ins., and the engine a Mills *75 c.c. Twice a winner of the I.C.I. Challenge Trophy for International Jetex is no mean achievement, and in No. (5 we see \V. Houghton of Rhyl in North Wales, who has managed to collect the huge trophy again this year. Flying this unusual Jctmaster model, Bill’s best time on the windy finals day at Radlctt was 3 : 12, making a ratio of 10 : 66. Like the San de Hogans, this Jetex job has a drag tab on the left wing—just a length of Sellotape with a blob of P la s tic in e to w e ig h t it. d o w n . Next door in 7 arc a few of the high speed Jetex K.T.P. models by the Epsom & D.M.F.C. boys. Remember YV Tinker’s article in Febru ary issue on 200 fn.p.h. with Jetex ? Well the boys arc getting very near to that figure ! Swept tail/ wing model has a Jctmaster, and 1-avoch- kin, a 50, whilst the hand holding them gives an idea of size for comparison. Last, but by no means least, a superb scale model by John h'ozard who wrote those illuminating articles on Delta’s in the Feb./March issues, and has con tributed another magnum opus to the 1953 " Aeromodeller Annual”. In Q is his 1/6th scale Miles Hawk. 66 in span, 3J lbs. weight and with an E.D. 2-46 diesel, the model is accurately finished in the colouring of a com peting Hawk in the 1933 King's Cup air race. 734 December, 1953 Y o u r f u l l - Two easy-to-build designs specially selected for your enjoyment-build one, or both, for the 1954 season! A high performance A 2 by Don Butler, Designer of " Fugitive " and “ Jader 60 ” SERAPH Ballast the nose until the correct C.G. position is obtained and check the final weight. If less than 141 ozs. move the ballast to the next compartment back and increase till the C.G. position is once again correct. The designer suggests that if the incidences and C.G. position are correct and the Hying surfaces free from warps, there is little point in hand glides and a tow launch may be tried straightaway. HE “ Seraph ” is the latest of a scries of long- MATERIALS Tmoment Λ/2's and. although the designer 2, Γ χ Γ χ 3 β · . 2, J* x l ' x 30* t.o. 1. I 'x I 'x U * . 1. 3/16*x states that it just falls short of a still air maximum 2.8/tfl*x7/ίβ*X36*. 2,Γ χΡ χ3β'. 2, Ι/16*χΓχ3β*. Ι,Ι'κΙΓχίΗ '. 1. 3 32*X3'X30*. 1. Γχ3'χ3β*. 3. 1/Hl'xS'x from a 164 ft. line, its performance in the pre 86 · Odd 1 /Itt" p \ y 9 J" *quau* hardwood, etc. liminary 1954 eliminator suggests that the design will l>e well among the top dozen in the finals. Below: Don Hnllrr strongly advise* the one-piece icing for contest trork ; but alternative etou‘d ia l The lay-out follows the almost standard jxxl and hat res are given on the plan for those with restricted boom approach, but additional strength is gained means of transport· Hunting ricic sholes Pete by running the boom right through to the nose- AllahCT*Λ variation irith rounded tips. block and building the pod round it to obtain the necessary cross-section. Construction starts with cutting out the sheet parts for the fuselage and gently steaming the bottom panel to a slight curve from F7 forwards. Secure the towhook in place and add formers 3, 4, 7. 8 and II to 21 inclusive. The auto-rudder line is threaded through and the U.T. hook cemented in position before adding the sides and top of the basic stick. After fitting the side pieces P.3, add the pod formers, the sheeting PI and P2, and the rear wing peg. Cut the pod sides from 1/10 in. sheet, chamfering the rear edges, and fit in place, steaming to the gentle curve if necessary. Complete the remainder of the structure and sand smooth. The wing fairing is not cut through until after sanding ; the fairing, incidentally, is left loose and held in place by the wing retaining bands for flight. Cover the assembly with lightweight Modelspan, doping the tissue on and applying several coats of sanding scaler and coloured dope, depending on the finish required. The wing and tailplanc are of straightforward construction, the former covered with heavyweight Modelspan and the latter with Jap tissue. The outer wing panels should be given 2 degrees washout. December, 1953 735 size plans scale model for ■5 I c.c. engines ΊΡΗΕ publication of the Luton Minor in the Eric 1 “ Aircraft Described " series, in the May. 1953. Fearnley’s Ajbkomoukllek, resulted in a minor flood of letters requesting a flying scale version of this delightful little ultra-light. As it happened, a few weeks later we receiver! flying photographs of the model detailed here, and immediately investigated this machine with a view to its suitability for the average modeller. Many modellers have avoided flying scale jobs for various reasons, the main snags being the amount of work required and the greater suscepti bility to damage likely to be encountered. The Minor is the complete answer to all that—so much so that even a comparative novice can build and The tail poses no problems, and the*3/10 in. sq. fly it with confidence. Construction is very simple construction of the fin is straightforward. and the model so strong and light that it will Onc-cighth inch dowels and shaped trailing edges absorb a tremendous amount of rough handling are used for the wing struts. The lower hooks arc during the trimming stage with little likelihood of bound and cemented in place, but the top fitting serious damage. should not lx? completed until the rigging stage is As shown, any motor up to 1 c.c. may be used ; reached. The undercarriage passes through brass the prototype used a Dart, which meant a little bushes in the fuselage at the rear, the front fitting nose ballast. but with a β x 4 prop take-off was flush to the fuselage bottom. The shock struts arc accomplished in about fifteen yards in still air. The well soldered in position, luxiks lx;ing formed at the climb was slow and steady - true to scale and is top for the rubber. 1 Icavy wheels arc advisable. extremely pretty to watch. After covering and doping (heavyweight Model- The fuselage is of conventional box construction, span was used on the prototype), cement the fin in the two sides being first joined at the cockpit and place and fit wing and tail. Hook struts in place the ends then drawn to position. Add formers and and. with the model square on the table, prop each stringers and motor mount ; with larger motors it tip to the required dihedral and complete the top is advisable to drop the thrust-line slightly, to strut fittings. Add details tailskid, headrest, allow sufficient ply all round. Add noseblocks etc.- anti instal the motor, using washers to obtain and form the wire centre-section struts, binding the indicated sidethrust. The dummy cylinder securely to the longerons. Check incidence and forms the fuel tank. Add other finishing details. fuselage line-up before fitting the top and bottom fuselage sheeting. Fair the struts and insert the Balance where indicated, using ballast, and tubes for the wing strut retaining bands and top check for warps and alignment. The flying speed undercarriage shock absorbers, then sand all over is low, so first glide tests should be made with care. and cover. The glide must be straight, and the rudder fixed in The wing ribs are cut from medium balsa (hard position when straight flight is obtained. Using will raise the C.G. severely, due to the amount of low jxnver, a gentle turn to the left should occur— material) and quarter-grain spars arc recom if the turn is steep, adjust the thrust-line before mended. The full-size machine has no dihedral, attempting further flights. Do not touch the but it is safer to employ a little on the model, as rudder. Increase revs , following this procedure. shown. The strut-fixing tubes must be firmly The glide is a gentle float, but avoid trimming too cemented to the undersurface. near the stall or a tendency to drop a wing on the last part of the glide may appear. MATERIALS 8. 3 /1 6 ' X 3 . 16' X SO*. 8. 4'xrxSrt'. 2. 4' X 3 ' X 36*. 1. |*X X 30v 2. I'x l'x 36 X.» 1. I 16* x 3 ' X 36*. I, I /32* x 3* X 3»'. 2 . 4* x 86* dowel. 2, 36x16 s.w.g. wire. Scrap J* tbect, 3/10" ply, block, eic. FAIREY SWORDFISH MKI HT.N ftATCnaoft the aeromcoelllr plans service «ρ» *r■ ·»» jonct» uunV«c»m t«nn v>nu «in « Ι* κ & " Λ fi B U t t i Κ3Γ” Η « *'Mi£3P ** ΗΓ •I' December, 1953 737 F a modeller wishes to build a scale model, the I.chances are ninety-nine in a hundred that one of his requirements is that the prototype shall be well-known. How admirably docs the " Swordfish " fulfil this requirement ! The last biplane to see # service in quantity in the British Forces is an obvious choice for a scale biplane fan, and Lt. Col. Batchelor's model has captured the exact atmos phere of this last survivor of the " wind in the A f - l* DETAILED wires " era. SCALE VERSION OF THE The model is not for the beginner, but any average modeller with a little experience should FAMOUS have no trouble in building it -there are no really difficult parts, but a fair amount of work is required and the construction cannot be hurried. Standard building techniques arc employed F a i r e y throughout, but an instruction leaflet summarising the construction sequence and so forth accom panies each plan. Swordfish Being a fairly heavy model, and rather under powered (by competition standards, at least) the FOR -75 — 1-3 cc. EN G IN ES Stringbag is a steady flyer, at its best in relatively by calm air. Λ stately climb and glide, with little marked difference in speed, were features of the Lt.-Col. Η. T . N . Batchelor original, and the Amco -87 used entailed a take-off run in the region of forty feet. A minimum motor Regular Army . .. age 33 . · . m arried, size of *75 c.c. is necessary for flight, with a top h a · tw o ικ»ιΐϋ . . . m em ber o f Κ .Λ .Ε . limit of 1-3 c.c., and the machine should be Fern borough Art* and draft» Guild ... trimmed to flv in left-hand circles of at least 100 ft. main intercut in Free-Hight scale *ith in diameter. The glide should be in slightly wider radio rontrol . . . also keen on scale left circles. No bad habits have become evident, model ships, sailing and photography. except that in rough air the mtxicl can be upset at a height of three or four feet by ground turbulence. In the event of any mishap, the rugged, knock off structure is hardly likely to suffer extensive damage. Just as in the full size aircraft, the actual rigging in the model holds the flying surfaces in their true positions, the knock-off ability relying on small balsa shear pins passing through the tongues. This model " Swordfish ” is definitely designed for the connoisseurs' building board, and, as such, we anticipate seeing a good many of them in the concours and flying scale events throughout next season. Full size dic-line prints of the l/5th scale plan opposite, can be obtained, price G/- post free from the Aeromodeller Plans Service, 38, Clarendon Road, Watford, Herts. Heattiny show» the prototype model on un Aero- modeller proriny ftiyht. At riyht : Sky type " . S ” or tiurk ryg 1/n-cn utulorefde* with black leiterlny and ulandard round* I*. pluti draten aileron and eleralor linen make for authentic appearance. ftelow, left: Side cine empha*i»e* the tony tail moment, a »nfe ttabihsiny feature of thin model. Itiftht : Hear threc'-qunrtrr fin e *Λ»ιγκ w in y uIo Im. centre section hump and re/Mifiw« rear rtwkpit which typify the famous “ fttringbug." 738 December, 1953 ARMCHAIR AERONAUTICS i A review of new books of aeronautical interest The m.vsl«*r,v explained mander So and So actually achieved such a How Planes Fly, bv Sydney K. Vcalc and success in 1940 ”. F'ar better the author had "W ren ” (Penguin Books Ltd.). 2/6. 32 pages. written a war-time biography. Illustrated. The final chapters of the book describe the When an author as preparation and incident of a low level bombing qualified as Sydney raid on a Gestapo headquarters in Amsterdam. Veale in the explana Here the narrating navigator breathes a little more tion of the whvs and freely in the cockpit of a ” Mossie ”, having by wherefores of aviation, now left the terrors of ” Beaufighting ” well and an illustrator as behind him. There was much enjoyment in this experienced as Chris dramatic finale to ” Tumult in the Clouds But Wren get together in again, was the final episode fact or fiction ? this Puffin Book No. 94. the result is bound to be good. It takes one through an explanation of Introduction to tiigTit control surfaces and their elfect. to aerobatics, and How to Fly, by Laurence C. Bagiev (Blackie & to an elementary interpretation of lift as it is Son Ltd.), 7/6, with Λ6 line illustrations and 13 derived from the airfoil. W ith Wren’s coloured plates in colour, by the author. sketches to unravel these mysteries of flight, the Laurie Bagley will be re reader cannot fail to grasp the hitherto elusive membered in the aeromodcl- theory, and for this reason we recommend circula ling world for his magnificent tion of “ How Planes Fly ” among aeromodelling’s S.P.A.I). S-7CI Scout and his beginners. Bishop’s Xieuport 17C. "How to Fly” thus holds additional li^liting; tail and fiction interest, as it is written and Tum ult in the Clouds, by Andrew C unningham illustrated bv " one of us ”, (Peter Davies). 10/6. W The book is designed for the This facto-fictional account of rather younger reader anyone above twelve night fighter and intruder opera years old should have little difficulty in following tions over England and the it and lakes the form of a pilot discoursing alxmt Mediterranean is written by one aircraft generally to a youngster who is going to who actually participated in this have a crack at flying a Vampire. Opening with vital phase of the last great war very simple explanations of the principles of in the air. Andrew Cunningham, flight, the text goes through control systems, the author, was, in fact, trained construction and function of various parts, as a navigator and completed propellers, an excellent chapter on the principles two tours of operations in night of the gas-turbine jet engine, cockpit layout and fighters. The fact that he was awarded the instruments, flight preparation, and, in the final D.F.C. and left the Service with the rank of chapters, actual Might technique and handling, Squadron Leader is an indication of his experi with a little speculation on the future. Excellent ence. lie vividly portrays the frustration line drawings and first-class colour work amplify experienced by those who used the early radar the text. equipment in that frightening aircraft the Beau- fighter, and the aerial antics that ensued as a We particularly enjoyed the jet engine chapter result. Ilis description of R.A.F. Squadron life in and the actual flight description, although the wartime, coupled with very real accounts of night latter, wo felt, didn’t quite manage to get over the fighter interceptions, hold one's interest to the last. concentration and sense of ” everything happening What a pity the fictional side of this book was ever at once " which would be characteristic under such introduced, 't he style is factual and there arc even circumstances. However, the procedure and footnotes beneath pages that describe various details are of absorbing interest to anyone who has fictional successes, explaining that ” Wing Com never Mown. December, 1953 739 aixmaa focus on . . . ill? OFFICIAL APPROACH by Peter J. Hoskison Inside "g en " on Local Government A l d e r m a n l l 'a l c , Μ α ι/n r o f l.rlreater. ΜΌ* hren to reeogni*e the and Byelaws that affect aeromodellers. eulitr uf the hobbit. and opened the club exhibition*. URING the 1952 flying season the flying ground Each town is divided into a number of " Wards ", situation began to deteriorate anti many the number of wards depending upon the size of modellers found themselves without a suitable the town. Each ward has its own representative ground. Several local authorities have already on the council, and the person who is elected into imposed bans on flying model aircraft in parks and that office is known as a Councillor. Make a point other open spaces, whilst others are looking on of getting to know yours—remember. Councillors aeromodellers with suspicion and arc considering are there to help you ! '* taking action On the brighter side of the Council meetings are held at regular intervals, pit ture, however, some councils have been most but it is not the council as a Ixnly that does the helpful towards the modelling movement and have work. The council only discusses and. should it given all the assistance possible. I lowever, two think fit. approves the resolutions of individual wrongs do not make a right and do not help committees coming under, its jurisdiction. “ groundless ” modellers. It is with a view to helping these unfortunates that this article is Of particular interest to modellers will be the written. Its purpose is to get this very vexed Parks and Commons Committee. It makes sure question into its proper perspective, and to give that the open spaces arc well cared for and made modellers a few tips that might l>e of help in attractive to town dwellers. It hires out commons persuading local councils to let them have the use and recreation grounds to local football and cricket of public parks. clubs and oilier sporting organisations. The committee also has the jxiwer to recommend It is important to bear in mind that the local imposing a byelaw regarding flying if it should council is there to help you ! Its members are think fit. elected by citizens of the town, county, or district it represents, and each member tries to do his or laical authority committees have to have their her utmost for the welfare of the inhabitants. actions approved by the council as a whole and until this is done, the committee's decisions are Ijornl («ovmiiunii not legally binding. An official report of the The term Local Government is the one used to committee proceedings, containing the resolutions describe the system by which local areas arc passed by it, is laid before the council and is studied allowed to manage certain of their own affairs. In carefully. The council goes into important the same way as the aeromodelling movement is questions, byelaws for instance, in very great divided into different classes, such as free flight, detail. The making of laws is considered as being control line and radio control, the local government very important and is not " rushed ", system in this country is also divided up. the chief You may wonder why on earth you as an aero- classes being counties, cities, various types of modcller should be confronted with all the fore boroughs, urban and rural districts and parishes. going facts about committee procedure, but these Kach of these areas has a council to look after it. explain very briefly the inside workings of local Λ council is representative of the people living in authorities and help to show that everything is the area to which it administers. The size of the " above board They also explain why some council itself depends upon the number of in times one must wait for a considerable time before habitants under its care, and its powers are hearing the council's decision, after application has dependant upon the type of council. been made to use the local park for model flying. 740 December, 1953 Group taken at a pout IIfont d· D.M.A.C· douce include» their %lor»hip». the Mayor and H fl|firg||. l»i the heyday of Tairlop. the Mayor of Ilford ιγολ ulicayn hern to nupport meet inn* at that renue, ItfC Dakota in foreground iru» huiit hy 4i Taxi 99 H ardern, third (m m left. (2) Models might have been regarded as being “ lethal weapons ” and thereby a potential danger to spectators, even though their operators were insured. (3) Models have been flown on council ground in the past without the council’s consent. If these or other reasons applicable to local conditions are obviously not the answer to the question then perhaps the answer is that none of the It is worth remembering that the powers of all councillors had ever heard of the M.A.C. before, councils are limited and the legality of their actions and therefore looked upon it as an association that may be questioned and tested in a Court of Law. should be left well alone for the good of the public. This is probably one of the reasons why some Tlant important letter councils prove difficult. They have never heard Let us suppose that members of a model club of the organisation making application to them, want permission to fly on a local open space. To and arc rather loth to grant permission for some whom should the club apply, and what is likely to thing they know nothing about. To the majority be the result ? of councillors the terms " free flight ” and “ control Application must be made to the clerk of the line '* mean absolutely nothing. Therefore local authority in whose area the ground in question is councillors must be initiated into some of the situated. The secretary or other responsible official intricacies of aeromodelling. The club and its of the club should write a letter to the Town Clerk activities must be brought to the notice of local explaining exactly what is required. It should be townsfolk. pointed out that the park will be required only for Ailverfising Aeromo Local authorities have powers which have been Home Office Xiiggesfions vested in them by Parliament to make byelaws In February, 1950, the Home Office issued a under four ” statutes These are the Public circular letter to many local authorities in England, Health Act 187”), the Open Spaces Act 1900, the making suggestions about imposing byclaws Local Government Act 1933, and the Public against flying. The circular says : Health Act 1930. The last mentioned Act docs " Developments in the size and speed and the not really concern aeromodellcrs as it deals with recently increased availability of those types of model byclaws from a public health point of view. The aircraft lo which the model byelaws are expressed to first two Acts apply only to urban councils, whilst apply have made them potentially dangerous, and also the Local Government Act applies to local capable of creating a nuisance through noise, so that authorities generally. They confer powers on local it may often he desirable to regulate their flying in authorities to make byelaws for good rule and some degree. On the other hand, local authorities will government and for the prevention and sup recognise that through the construction and flying of pression of nuisances. model aircraft a real contribution may be made to the The local authorities, therefore, have to consider science of aviation ; that they help to stimulate whether flying models constitutes a danger to the interest in national aviation . and that, under suit public and whether the noise made by diesel and able conditions, they offer to many young people a glow-plug motors creates a nuisance. In those legitimate pastime and good hobby. The byelaws are cases where authorities have made byelaws against not intended for the restriction of flying, but to make aeromodellers it would appear that they were of the it possible to pern fit flying in areas where permission opinion that a nuisance existed. Again, perhaps for this pastime would otherudse have to be witheld. local parks were considered too small and therefore A ny restrictions should be limited, therefore, to what wholly unsuitable for model flying. On the other is really necessary under local conditions to protect hand, of course, it is possible that modellers have the community at large from danger or nuisance. not been given a fair chance, inasmuch as very few " Some of the smaller recreation grounds may be members of the council are interested in this kind wholly unsuitable for flying power-driven model of hobby. This is where becoming “ established ” aircraft. In many of those, no one is likely to try locally can be of help ! flying them, and no byelaws will be needed.' Appralinic again^f llyclutvs In fairness to modellers the Home Office sug Luckily, everyone has a chance of appealing gested that proposals to make byelaws should be against byclaws. Ucmembcr, it was stated earlier brought to the notice of any local M A t'.'s and on that the legality of local authorities' actions can their views considered. be questioned and tested in a Court of Law. liiKtirancc Schemes Therefore, it is possible to have a byelaw declared All modellers should t)e insured in case of » ultra vires” {this rather formidable phrase means accidents. The S.M.A.E. operates a scheme to quite simply " beyond one’s legal powers ”) or unreasonable as being not in the best interest of cover aeromodellcrs' requirements. For the very small sum of 3/- per year all persons availing the community. themselves of the Society’s third party insurance After a local authority has made a byelaw it is scheme are covered for a sum of money with a submitted to the confirming authority, usually the limit of £25,001). In other words, if an insured Secretary of State, for confirmation. At least one person’s model strikes anyone or anybody’s month before application is made, notice of the property, the insured person can be awarded up to council's intention to apply for confirmation must £25,000. be given in the local press. That means all local In addition the Society also arranges on request newspapers circulating in the area to which the a sj>ecial insurance for clubs using R.A.F.. Ministry byelaw applies. Incidentally, copies of the byelaw* of Civil Aviation, and Admiralty’ dromes, at an can be purchastxl from the authority concerned. annual premium of 2 5 /- per chib. The cost varies of course, but it must not exceed 0d. for every 1,000 words. During this period anyone affected—or should wc say aggrieved -by the byelaw* can make a representation to the Secretary of State. This representation MUST bo made before the byelaw is confirmed. If, however, in spite of objections, the byelaw is confirmed, the matter can be taken to the Courts, for them to decide if the authority was right in making the byelaw. Should the Court decide that the authority had exceeded its powers, or was being unreasonable, it can declare the byelaw void. /'o rf I'alltot M.P.C. ran a Cinema exhibition to help ■•I.T.C’· recruitment and jdaffed *a/e by inriting both ConMerratlee and /.abour flirty candidates to officiate. Models urere alto fiown from I he Cinema roof. 742 December, 1953 IV/I I II the imminent ▼ ? Christmas spending spree, manufacturers are hastening to introduce many new lines and rein force their existing pro ducts with improved standards. I· rom B. Keif A Company of Southport we received a test, batch of colour, clear and fuel proof dopes, plus their two brands of cement, Puk-ka and ll.M.G. The dopes wc vouch for as good, reliable material, well pigmented with adequate covering power, and good shrinking qualities in the case of the clear dopes. The fuel proof dope does not. as indicated on the label, need the addition of hardener, and is virtually transparent, an asset when going over coloured finish. Puk-ka balsa cement has distinctly different smell to other brands, is quick drying, and makes a joint “first time ’* which is an aid to quick building. Its brother cement. H.M.G. Ileal and Waterproof Adhesive, is the type we would especially advise for hardw Multlurnplt " Jifii " Ipp r knife, Nhmrn die-curiem- when trying out the new Yebb Accessories product, hied into five port». Note the Model Makers Spray Gun. This is a self- fountain pvn dip for contained unit, retailing at 8s. (kl., direct from the a irrpi up in top ptteket. Works, and complete with five-year guarantee on the spray unit and full instructions. A feature of this handy gadget is the non-return valve in the spray head which eliminates all tendency to blob bing. The glass container holds two ounces at each filling. Full marks too, for the latest Multicraft Junior, a neat pencil size modelling knife that is extremely practical, carrying its double ended blade inside the handle, and also most respectable in appearance. So much so in fact, that the fortunate staff member who opened the package on arrival, has been toting the Junior around clipped in the top pocket of his suit for weeks I Price is 3s. Od. from any model shop. We always keep our promises, and down at bottom left is the picture of the new Mercury Magna mentioned last month. Designed by Ron Young for *5—75 c.c. this neat sports model will sell well at 12s. 10d., including tax. Latest item from the E.C.C. Radio stable is their December, 1953 743 lDBBQMa) new 202 Escapement which really is the smallest yet. Weighing only half an ounce its overall measurements are I x f x | inches and attachment is by means of two P.K. self-cutting screws. The armature is mounted vertically inside the coil winding and engages with two pawls soldered to the shaft. Shaft is 17 s.w.g. and linkage to the control rod is by means of a spring coupling. The escapement is. of course, self-centering and is designed for rubber drive using a single strand of 1/1 Osq. At 17s. lOd. a good buy. Messrs. F..C..C. have asked us to point out that supplies <»f all their well known Transmitters and the 915A Receiver are readily available and no difficulty should be cxjxjriencod in obtaining them from your local model shop. A very useful variety of precision made M inia ture Gears, suitable for radio control purposes can be obtained from Messrs. H. Franks of 58. owners is available from K.D.'s warning mechanical New Oxford Street, London, W.C.l. Amongst types of the correct way to re-assemble this engine it‘s worthwhile sending a S.A.K. for. Scale modellers in particular will welcome the Radial proportional calculator marketed by Ajigier, Akers & Company of Ceylon Place, Eastbourne, Sussex. Primarily intended for artists and editorial types like ourselves, the calculator shows at a glance the revised scale dimension no matter what the proportion. For example, an A.P.S. l/48th scale solid drawing is frequently used by modellers to develop a larger scale flying job. Just set the calculator for one known figure, say | in. equals £ in., and every other dimension can be read off round the scale. Price is Os. fid., and ours has been in use daily for more than three years. Traders in the North will I k * pleased to know that Messrs. W ilmot M ansour & Co. Ltd. are open ing a new distributing centre for the convenience of retailers in the Nortli at 2fi, Chester Road, Macclesfield. Incidentally, with the introduction of the Scorpion the 350 unit is being withdrawn them arc worm gears of 2.500-1, spur reduction from production, though supplies of fuel and gears, and differentials, as illustrated. In addition accessories will remain available. to the types shown in the photograph there arc many other varieties and we recommend that radio enthusiasts pay a visit to New Oxford Street fora good rake round. Prices from Is. upwards. Those who went to I-ong Marston to see the Ripmax Trophy won for the third time running by Sid Allen (now of Electronic Developments) with his Radio Queen were also treated to a demonstration flight by his 1$ times Ruddcrbug that really gives promise of great things to come. With a new 6-reed receiver and 3 E.D. motorised actuators for elevators and engine control, plus a new type electronic actuator on the rudder, Sul took off and landed with perfect motor control. “ Just like flying the real thing ” said Sid. who is seen with the outfit at top right. Beep box has a joystick for progressive control on the elevator and rudder, plus two buttons for fast or slow motor. Rx is h i a small maroon box, and we gather that production begins at the Kingston factory in the New Year. Incidentally, a special note for 2-40 744 December, 1953 ********************************* * * * Getting the best out of... i hiiiiiiiiihiiiii * * * ♦ ********************************* T e d Mur luu of Sheffield demonstrates a smooth launch of hiu frcc-fUghl microfilm fob. Xotc the built-nit propeller, fact that it gave model club members the means to conduct contests during the winter months and so sustain practical interest in flying throughout the year led to it becoming very popular, with peak ndook models have never achieved the same interest reached towards the latter end of the war Idegree of popularity in this country as. say, in years. Now K.T.P. flying has receded into the the I Jnited States. Yet the indoor free flight model background and, in fact, even the method itself is probably one of the most “ scientific ” of all may be unknown to the relative newcomer to types of model since its performance is almost acromodclling. entirely dependent on the model’s ability, truly reflecting the skill of the owner in both building Even in America a parallel falling off in interest and trimming it. in free flight indoor flying lias been noted during recent years. The basic cause seems to be the Indoor models can be divided into two main primary characteristic of all indoor models men groups the free flight models and the tethered or tioned at the beginning- performance is, in the end, round-the-pole (R.T.1'\) models. The former a reflection of individual skill and after a period of require large obstruction-free halls or enclosed development this breeds a " winning circle ” of the spaces for operation in order to achieve high dura experts with the average modeller put out of the tions and it is largely lack of suitable facilities running in all the contests. A similar trend has which has been responsible for the general lack of interest in this field in Britain. American model been apparent with outdoor control line contest lers, on the other hand, have been rather more flying, but with outdoor free flight the luck element favoured. Large aircraft hangars have been made in the form of unpredictable weather conditions available for indoor contest meetings and indoor (updraughts or thermals and downdraughts) con events have been a feature of the American tinues to keep contest results more open. Nationals since their earliest days. From the point of view of pure contest flying, therefore, getting the best out of indoor models Tethered or K.T.P. flying, which is basically a demands first an inherent skill with the type of British development, started back in the mid- model concerned—if you hope to end up in that 1930’S as a means of providing for "duration " " winners circle ”, On the other hand, indoor flying under restricted indoor conditions. The contests now are so few and far between that there are few established experts in this country. About the only outlet for the ” duration minded ” indoor builder, in fact, is the indoor records list where, if the facilities for flying indoor duration models are available, the field is relatively open. Alternatively there is the possibility of consider able enjoyment during the winter months in living indoor models just for the fun of it. Lor the most CLASS A fo r VAX satisfying results they will still be duration types, CLASS B t TQ20ZS but record-breaking times need not Ik* of primary importance. In fact potential duration, as largely reflected in the size and type of model, will be governed almost entirely by the size, etc., of the indoor flying space available, l he latter may range from the use of a local cinema during Sunday mornings (permitting the use of ten minute plus free flight microfilm models) down to the average sitting room with a nine foot ceiling (where " Ixibv ” microfilm models may be capable of two to three minute flights, but R.T.P. models will probably be more practical). Dealing with the free flight models first, duration is almost entirely dependent on the propeller· power combination, as expressed by the length or duration of the effective power run. This means. December, 1953 745 «Jr 10 lllllllllllllllllllllllllillllllllllllllllllllllllllllllll 1Μ 6)!ρΜΙ ι8 IIIIIIIIIIIIIIIIIUIIIIIIIIIIIIIIIIIIII in effect, the largest possible propeller used with minute plus indoor model, which is the present the minimum possible cross section of rubber— American top level. Our own record figures are calling in turn for the lightest possible airframe. much more modest, especially in some of the non There is also the factor that the efficiency of the standard classes, and so there is opportunity for model increases with size and so, potentially at the modeller with a flair for indoor construction least, the best duration models are those of the (and the available flying facilities) to break into largest size group practical (up to 30 in. span, on the news. average). A far better proposition for the average flyer who Design of such models is more or less standard would like to build an indoor duration model is to ised— Fig. 2 as a stick tractor with pylon- duplicate the layout of these record breakers but mounted wing. Propeller diameter may exceed strengthen up the construction. In other words, one half of the wing span but powered, in the follow the same general outline but build a more largest size of model, possibly only by a single loop rigid model. Its maximum duration will be lower, (two strands) of i in. strip rubber ! To climb on but it will be more consistent and more readily such low power the weight of the airframe has to capable of holding its trim. Hence it can even be be reduced to a fantastic degree—of the order of a better " contest ” proposition than its light one hundredth of an ounce. weight counterpart which is on the weak side and may become unstable when flown under full turns Itecord lireakerw since its surfaces twist under the increased flying speed. The current British record holder (18 mins. Record breaking models in this category demand the use of special light grade balsa in order to achieve minimum weight. Bracing with hair- thickness tungsten wire may also be used to provide rigidity and even the thickness of the microfilm covering is controlled during its making. Broadly speaking, size for size the lighter the model the greater its potential duration since it can be flown on a smaller cross section of rubber (more turns possible), a longer motor of the same cross section (more turns for the same overall weight), or a larger diameter or higher pitch propeller (longer power run). Such models are definitely in the expert class. SLOW CL IMS Balsa selection alone would eliminate the majority LOW of would-be record-breakers. Constructional prob CEILING lems in assembling that lightweight balsa airframe would put most of the rest out of the running. That, however, is talking in terms of the thirty- 52 secs.—a record established before the war. in 1937, incidentally) is a typical example of '* sturdy " indoor construction. The design and construction of indoor models has been covered quite fully in a previous articles (It’s Designed for You— Indoor Models. A M . May, 1951.) We concern ourselves here with getting the best out of a particular model. If it is one of your first indoor models, almost certainly it will be too heavy and so will probably want more power, or a smaller propeller, than that specified as the opti mum for the size of model concerned. Be that as it SMALLEST DIMENSION MODEL SIZE propqry/ons or tA OR Θ ISPANJ HALL may. we can still adjust the model for optimum UNDER 10 EEET TOO SMALL FOR performance within the handicap of excess weight. SATISFACTORY effective height (c) FLYING LARGELY GOVERNS TRIM The first requirement is to match the model to IS FEET 10 INCHES LENGTH#'OR W!OTH(A) the available size of the flying space. It is difficult 20-2S FEET. IS—20/NCHES GOVERN MODEL SHE SO FEET 24 -26INCHES to give general rules here since, obviously, the IOO FEET. JO INCHES. lE/G. J l 1------1 HJ.t greater the available flying space the better, DDE L*UE R 746 December} 1953 the model is adjusted to fly circles of a sufficient diameter to confine the flight pattern to the centre of the flying space so that the flight is not termin ated prematurely by striking a wall, etc. Provided there are no draughts (i.c., no drift) this should not be difficult in large halls, but becomes increasingly difficult in smaller rooms. A combination of side- thrust and rudder offset should be used to provide a circle, although sidethrust and a tilted tail is finding increasing favour. A more or less constant irrespective of the size of the model. With limited space, however, it becomes more important to scale down the size of the model and so Fig. 3 is a rough guide as to what size of model to build related to typical Hying areas. Trimmiii&t lor lieiglit The second thing to consider is the height of the effective ceiling of the hall or room. This does not affect the size of the model so much as the length of the motor used As a general rule, if the ceiling is high then the flight pattern should be a slow, steady climb to just under ceiling, settling down diameter circle should be aimed at throughout the into a long cruise, gradually losing height towards power run—normally to the right. With a high the end of the power run, with the power finally ceiling, some models may trim out best with a left running out with the model still some one-fifth of hand circle throughout the flight. As far as the ceiling height above the Moor (big. I). If the possible the use of downthrust to kill a stall under ceiling is low, then maximum duration is normally the initial burst of power should be avoided. This realised by arranging for a very slow, almost non will tend to " kill ” the power on the cruise part of existent climb and the model eventually touching the run. If initial stalling troubles are apparent down still under power, but with nearly all the and cannot readily be cured, a good solution is to turns run out (Fig. 5). let the propeller revolve for about five to ten Taking the same model and same propeller, the seconds before launching the model. The initial first trim can be changed into the second, and urge from the rubber motor will then have died vice versa, by shortening the length of the motor away. until the power runs out in the air ; or, conversely, rroiieller/PuM ei· iHliiawtinent lengthening the motor to increase total weight and result in a slightly " underpowered " condition for For a model which is obviously overpowered low ceiling flying (Fig. 0). (climb too rapid) or underpowered (complete lack of climb), adjustments must be made to the Trimming; for circle propeller-power combination. As a check on the These two basic trims, of course, assume that former condition, if the model deadsticks in the air (i.c., the power runs out in the air) on 75 per cent, full turns, then almost certainly the propeller is turning too fast. Cures are : increase the pitch of the propeller, increase the diameter of the propeller or reduce the cross section of the rubber (Fig. 7). Whilst, theoretically, it would l>e fairly simple to adjust the rubber cross section to find the optimum for any particular propeller, rubber only comes in stock sizes and these sizes are not close enough to accommodate the extremely small changes in motor cross section which might be called for. Hence propeller-power adjustments arc normally best made by altering the characteristics of the propeller or using a new propeller. Coming or going f ? Ϋ Thi a view of a microfilm model l* one of those confusing shots which could he taken either tra y. M odel Icoa actually photographed from below , i.c ., going away from the camera. Dtcembcr, 1953 747 m m m X o t a " d e a d -H itc h " lauding : hut a fa»I flash fth o io of an r.t.p. model trllh a « l o i r veering prop. T a k e n f n ’4 f* during a demonstration at the i'ampltell Youth Centre, Dagenham, the photo nhoirs Frank Hull's model on a 2 : 20 flight. A sign of an underpowered model is that the model persists in landing with a high proportion of turns left on the motor. Even for low ceiling flying the motor should be almost run out on landing. An increase in rubber cross section may change the trim to an overpowered condition where it becomes impossible to stop the model from climbing. In a majority of cases, however, it is circles (i.e., against torque) : or fin offset against usually better practice to increase the motor cross the turn if flown with torque (left hand circles). section on an underpowered model than decrease Actually which direction of circle is best, and also the propeller size. In such cases, climb can which is the best position of the line attachment, is generally be killed by increasing the original pro dependent on individual designs and can be used peller pitch, or using a new propeller of increased as the basic criteria for trimming out for the most diameter or pitch, or both. Final adjustment can satisfactory flight pattern. Optimum performance, then be made by altering the motor length, as consistent with the size of rubber motor used, described previously. On the other hand, if an comes when the model behaves in a similar manner to a low-ceiling free flight model, *. increase in power would bring the motor size out side the range normally acceptable for duration flying, a decrease in propeller diameter or blade area or possibly pitch, in that order, would be a better solution (Fig. 8). It on ml-the-pole models Trimming for best performance with an R.T.P. model is based on somewhat similar considerations except that the model & not required to climb. In tethered flight, too, higher power is required, size for size, than with free flight models. The same principle of building the lightest possible model for maximum duration applies. All the high-time R.T.P. models, for example, employ wing and tail surface construction essentially similar to free flight indoor designs, and also microfilm covered (Fig. 9). The thrust line of an R.T.P. model is normally left straight (no side or down) with the fin offset to aid the circle if the model is flown in right hand 748 December, 1053 ·-':·*· ·■ 1968 I» orld (JlfolcT Champion, linns II a ns v n of 111 Airfoil Topics Denmark, tllsplntps his very nutceanful The inside story of the Danish “ Flapped” Gliders A urlkei. and other new airfoil trailing edge developments /'HKN Hans Hansen carried back the World made by Copenhagen club men were arranged to Glider Championship Trophy to his native have adjustable‘'flap” edges, as mentioned in Model country, Denmark, the home of the Λ 2 class, his News, June issue, and the same scheme was tried achieve by our own Hoy Yeabsley. Results were still good, ment re older wings were modified with plates of that flected a beautiful Scandinavian 0*4 mm. ply to extend and double droop the T.E. (A system already used for several triumph. seasons by Austria’s Oskar Czepa), and a new type For more than a year, the members of his Copen airfoil was derived to accommodate the correct hagen club had been experimenting with variations a m o u n t on the trailing edge, and in " Aurikel ’’ he utilised of droop the airfoil derived from these tests. Story begins found in back in 1052. when one of the club lads, who tests on remains nameless, built a glider ready for the A/2 hack models. eliminators and, in error, allowed the T.K. to droop Result was that the new Hansen section won the excessively. A/2 trophy in '53. The full-size section is given Flight below, together with Fritz Neumann’s more con tests in still ventional, but equally efficient airfoil. Below, also W OLD ww«S , NSW IY!*fc air showed is another development of the fine T.E. in Max the model Haclclingcr's section for his MP.ll model, repro to be superior to most, and it was obvious that the duced by courtesy of THKHMIK. Note the T.E. had something to do with this. Other wings Nylon thread turbulator. HANS HANSEN FRITZ NEUMANN NYLON TURBULATOR MAX HACKLINGER 0 6 MM PLY OSKAR CZEPA 7 5/s" CHORD USED 0 6. MM PLY December, 1953 749 1 ' i c m m m FINGERTIP CONTROL . . . it at your disposal to put you amongtt the experts. En>oy reliable and economic radio control flying the E .C .C . way, happy in the knowledxo that manufacturing experience of many years is at your fmxertips. All our 202 ESCAPEMENT desixns aro thoroughly proved on the field 17/10 mol. before going into production and it Is no Weigbsydnly j coincidence that many national contests have only \)Τ Γ i been won w ith E .C .C . equipment. W e are especially proud of our latest " brainchild " the new 202 Escapement. Minute in site and light ol weight it incorporates many new features that will appeal to the enthusiast. All equipment is designed and tested for oporati in the 27 m/c band, and supplies of all r are readily available. Visit your locaj^videl shop immediately and study th equipment for yourself. 951A RECEIVER £4 .3 .2 incl, 13/2 P.T. Hard ECC (Telecommander) LTD. valve, long life equipment, Telocommandor House, Bury dust-proof plastic case. 4 Μ Ά Whorf, Bury St. RUISUP. current change I W eight 2 jo is . MIDDLESEX. Telephone: RuisUp 0880 RADIO RES AND ACCESSORIES VaivahoJdoiyfor Transmitter Bakelite case for 951A Receiver 4 6 Push button switch .. 2/0 Val v e h ol drf.lwPKelc i v e r Bakelite case for 1061 Trans Toggle switch ...... 1/6 Dust irojfjteflmg core fer .. ..11/6 Lampholder ...... 9d. Leng^afl«ccivcr aorial wirjffig idle and fixing bolts for 1061 Length of hook-up wlijj Transm itter ...... 2/0 Bezel and surround 3 6 colours Handle and fixing bolts for steel 0-50 Milliammeter 14 6 2-pin plug carrying c a s e ...... 3 Ό 0-5 M illiammetcr .. 14 6 2- pin socket 4-foot collapsible aerial ... 3/6 Small packet solder 6d. 3- pin plug Rubber Escapement Motor 3d. 3- pin socket 8-foot collapsible aerial ... 8 6 " E.C.C. Tclecommander " 4- pin plug Aorial baso and pfato ...... 3 0 Transfers ...... 4d. 4-pin socket Key lead, push button and 2-pin Quench Coil Bobbin 9d. Relay Bobbin woun( .SOOohm plug ...... 5/6 Quench Coil Bobbin wound for approx.) Keying choke, bar and bolt 3 0 951A ...... TRANSMITTER UNIT BELG IU M : Scientific, 11 A. Rue Det INTERNATIONAL OVERSEAS Chonreux, Brussels. £2.19. S Ind. 9/S P.T As illus trated. complete with valvo. AGENTS C A N A D A : Wescon Distributors. TRANSMITTER P O. Box 4272, South Edmonton, Alberto. Rugged and reliable w ith the maxi COLOMBIA. S.A. · Auxihares 1061 TRANSMITTER mum power output permissible Tecmco* Lido. Apartado Aereo 649. Built-In milliammetcr. warn Medellin. ing light, and complete £4.3.2 mcl. 13/2 P.T. Totally with keying lead and H O N G K O N G : Radar Co.. 40-D enclosed in bakelite caso w ith , Shun Tung St.. Mongkok, Kowloon sectional aerial. aluminium panel. Weighs only £8. 18.2 incl. IN D IA : Traders & Distributors 3 lb., can be tripad mounted. £ 1 8 2 P.T Cotp., 37-39. Park St.. Calcutta 16. IT A L Y : Sec. Cam. Solaria A.R.L.. Largo Aichtni 10. Milon. M A LTA : Joseph Petram, 367, S t Joseph Road. Homrun. NEW ZEALAND: Modeloir Ltd.. 322 4. Broodwo/. Newmarket. Auckland. SW ED E N : TNe-Trol. Box 7. ins/on. S W IT Z E R L A N D : Christine Streif. Ncestrw tg 16, Zurich 9/48. SY R IA : Joseph Peuonl. 367 St. Joseph Rd., Homrun. Malta. U .S .A .: American TelascoLtd.. 166. Spring Rd.. Huntington. Long Island, New York. Export Enquiries Invited. Borne Distribution: Export Distribution: fc K eil & Co. Ltd., 195. Telasco Ltd., 20, Grosvenor Hackney Road, London E.2. Place. London, S .W .I. Kindly mettiion ABROMODELLER irhen replying let nderriiser» 750 December, 1953 Get an ITjlW f kit today ! • . . YOU only have the interesting .... job of assembling and finishing EeZeBILT ‘ CHAMP’ KIT CONTAINS • ALL BALSA PARTS and PLYWOOD ENGINE MOUNT READY CUT TO SHAPE y · UNDERCARRIAGE & CONTROL ROD READY SHAPED f · METAL BELLCRANK · METAL CONTROL HORN • CONTROL HANDLE and LINES · NUTS & BOLTS • PLASTIC WHEELS, CEMENT, PLAN & INSTRUCTIONS The Champ is a beginner’s control line model for engines | up to I S cc. BUILD IT TONIGHT—FLY IT TOMORROW t "nc. Tux EeZeBILT SPORTSTER OU p refer to put a ,ittle , , • No cutting out craftsm anship into your models • N o tissu e c o ve rin g • N o p a in tin g co do! ~ V ·^ ·. Choose one of these ASSEMBLE IT IN LESS up-to-the-minute jets, THAN I HOUR -— powered by Jetex 50 Sportster kit contains : all parts die-cut and coloured—plastic pro peller assy, com plete, ready to fit— undercarriage shaped and wheels fitted—cement and rubber motor. P rice 3 O Inc. Tax Venom, Swift, MiG, Sabre, Hunter, Avro ★ ★★★★★★★★★★★★★★★ 707A, Panther, Javelin, A tta c k e r . ^ 1953-54 K.K. HANDBOOK * ALL 3 6 EACH D M .110 . Price 4 I ^ Now on Sale at your Hobby Shop ^ fill Articles on Building, Flying, | ^ M O RE FOR YOUR MONEY in tl models ! ffllV Control Line, Radio Control, etc. I / C ** super K.K. fly ,n S Je* ( l | \ plus complete K .K . catalogue. ■ ¥ * ¥*¥*****¥***·¥* Sole dj»tributor« in U.K. for Also distributors for ALLBON&D.C. ENGINES JETEX Motors & Kits E.C.C. R C Equipment E.D. Engines & R/C ELMIC Timers & D/Ts. Manufactured by E. KEIL & CO. LTD., LONDON, E.2 BRITFIX Cement, Dopes ELFIN ENGINES The Greatest Name in model kits AMCO and S 0 LA R B 0 Kind I if mention AEROMODELLER when rv/ihfinif In ail re it ise is Dtcrmher. 1953 751 umm NOW ON SALE! f o r e x p e r t o r b e g i n n e r · AERO MODELLER a n n u a l A 1953 FROM a l l g o o d OOKSELLERS & MODEL SHOPS VINTAGE y o a r lik e ίος** h SOME and we JL ha* bee" <^erve special effort, λλπτλγ» * conft r plyinfi to odrertisrrs Kindly mention ABROMOUELLEH when re 752 December, 1953 < * < Τ " e& n c/ a . . · TO ALL OUR MODELLING FRIENDS ALL OVER THE W ORLD! Wc cannot possibly send you all a Christmas Card, but we can and will continue to put our " SOLARBO M stamp on the two million or so Balsa sheets which you will buy durin* this comm* year. Continue to insist on " SOLARBO te in 1954 and thus ensure another successful modelling year. liimllij mention AHROMODKIJ^EII u heu rrphjinij to advertise**» : '-1 ..V. · December, 1953 : The Cover I’ainting by C. Rupert Moore, A.R.C.A. N May 22nd, 1941, Vice Admiral Sir John doped very pale grey. There seemed some con O Tovey, acting on information from recon fusion as to treatment of the fuselage sides, some naissance, put to sea with the Home Fleet to were pale grey right up to the top longeron whilst prevent the German battleships Bismarck and Prince others were doped pale grey up to the centre line, liugen from breaking out into the Atlantic, via again, others were shadow shaded right down to the Iceland and the Denmark Straits. With him, he bottom longerons. Roundels were as pre-war at had the new H.M.S. Victorious, carrying a con first. No fin flash was carried at this date. Struts signment of dismantled Hurricanes for delivery to and undercarriage legs were pale grey. Gibraltar, nine Swordfish and six Fulmars. By the end of 1940 "Temporate Sea Camouflage” Contact was made with the enemy on the evening was introduced. Various combinations of colours of May 23rd. Shortly before daylight on the 24th appear to have been used but finally, by 1941 the Hood and Prince of Wales brought the enemy " Dark Slate Grey ” with " Dark Sea Grey ” was to action in the Denmark Straits. The Hood was standardised for top surfaces. So called ” Duck sunk and the Prince of Wales damaged. To slow F.gg Green ” was used on all undersurfaces. the enemy ships, the Victorious was detached with Roundels were concentric circles of equal width, of an escort of four cruisers, and ordered to steam indigo, white, and vermilion below the wings. On within striking distance of the enemy. the fuselage side this was outlined by a fourth In this high latitude sunset was not till after circle of cadmium yellow while the roundel above midnight so it was still daylight when the whole the witigtip was indigo and vermilion only. At a squadron of Swordfish took off at 10.10 fy.m. The slightly later date the roundels were removed from cover painting depicts this take off. Aircraft 5A. below 1he wingtips. The camouflage on the cover in the foreground is down by Lt Com. K. Ksmonde, painting is from a sample of Swordfish fabric of later awarded a posthumous V.C. for leading the this date and is '* Extra Dark Sea Grey ” with desperate attack on enemy battleships in the " Dark Sea Grey ” the under surfaces being " Duck Channel. The other three Swordfishes shown. 5F, Egg ” i.e., “ Sky type S ”. The fin flash was intro SB and 5} arc piloted by Lieuts. Gick, McCIcan and duced in the summer of 1940 lx*ing three vertical Bollard respectively. Victorious can be seen, stripes of red, white and blue (red leading), but steaming against a background of showers. A very by the end of that year was standardised as a gallant attack was made on the Bismarck soon after rectangle of 24 x 27 inches. midnight and enough damage inflicted to slow 1942 saw the further modification to the roundel down the ship. By 2.30 a.in. all the Swordfish had ami fin flash, the white and yellow circles being “ landed on by 3 a.m. the Bismarck in spite of reduced to thin lines and the red changing from damage managed to elude her pursuers and she vermilion to indian red. Swordfish belonging to was not seen for more than a day when she was Coastal Command appeared doped white except for sighted by a Catalina, 1.000 miles away. H.M.S. the decking of the fuselage and upper surfaces of .irk Royal which had steamed from Gibraltar to wings and tail which were “ Dark Sea Grey ”. intercept “ flew off ” fifteen Swordfish which attacked in foul weather and so damaged the The scheme now in force for Naval Aircraft was Bismarcks’ steering gear that she was helplessly introduced on 1st October, 1940 ami is: All under steaming in circles. The official citation finishes surfaces, flanks of fuselage, rudder and fin, *' Sky “ there can be little doubt that the hit (by type S ” (i.e., “ Duck Egg ”); upper surface of wings, Esmondcs squadron) was largely responsible for the tail and fuselage, " Dark Sea Grey ”. Pre-war Bismarck being brought to action and sunk ”. equal width ultramarine, white and vermilion roundels are used. Very few Swordfishes could C o lo u r have seen this scheme. Unlike R.A.F. aircraft which had already l>ecn Two plan views of " Swordfish ” arc shown camouflaged, the aircraft of the Fleet Air Arm above, the one on the left being typical of 1940-41 were resplendent in peace time aluminium dope ami and the other a typical pattern of the standardised had vermilion, white and ultramarine cockades at scheme of 1941 onwards. Top surfaces of the the outbreak of war. Land camouflage i.e., “ Dark bottom wings in each case are camouflaged in Karth ” with " Dark Green " shadow shading was roughly the same pattern as the top wings so that used on the top surfaces shortly after the declara when seen from above and behind the pattern tion of war. the undersurfaces sometimes being carries on. uauias] 754 December, 1953 fitted to the tailplanc in the form of an elevator. So for a tow, the rudder is pulled straight, and the elevator goes up—a considerable asset for a job with a 100% C.G. position otherwise inclined to be unstable on tow. Back to Blighty with sketch F. a positive rudder adjustment device submitted by J. NY. Stafford of Mansfield in Notts. The drawing is self explanatory : but to keep weight down and make the ad juster neat in appearance, it is best to use an * 8 Β.Λ. screw size and cut the metal bracket from * thin tin. From Leicestershire — Hinckley to be TIMERRY Christmas, Joycux Noel, Huon Natalc precise—T. A. Payne sent us F, which is a means 1*1 and Wesolych Swiat to one and all wherever of making curved detachable panels for scale you may l>e. for this end-of-thc-ycar edition of models. Mr. Payne was involved with a scale Gadget Review takes you round the world with an Spitfire with a retracting undercarriage and the assortment of gimmicks for every type of model. great need was to make a hinged panel that would Let’s begin at home with idea Λ. submitted by keep its shape permanently. Thin gauge perforated Sidney Kemp of London, S.W.2. It's an engine zinc sheet provided the answer, and it keys itself Starter, built from a standard bench grinder and to the balsa if plenty of cement is used, and was created by force of necessity. Mr. Kemp had allowed to " rivet " through the perforations. one of those engines that just would not start by Jumping across the globe to Malaya, In is a hand flicking, and was just about to consider a suggestion from Ho Loon Shu, at Bidor. He uses classified advert, in the A.M. for ’’ Engine, new it as a single leg undercart for stunt models up to condition, l>ench run only ", etc., when he thought 1*5 c.c., especially where the plan or kit makes no of this excellent starter. Originally it had a double provision for this prop.-saving component. It is arm starter dog ; but it was found to be best with also a good idea for a peg-leg on a free-flighter. single arm as illustrated. The hand grinder is just bend a loop on one end of the leg, make a geared at 7 : I, with 3 revs, per second; this means " P " clip for a second lx>lt fixing, and fit to the a starting speed of 1,200 r.p.m. so the hand dick engine Ixilts. For small bearers, or engines with sinks right out of the picture. Procedure is simple, large crankcases, an extra kink will have to l>e bent just one choke, turn over past compression, engage between the lx «Its. the spinner in the locating hole and crank smartly, withdrawing the engine, plus model of course, when Back again to Ben Dutton in Mexico for *9, a things begin to work. Grooves in the casting and locking device for diesels with loose contra pistons an extra packing damp block enable one to tit the or sloppy compression screws. Wind a piece of starter to a bicycle cross-bar for field work, whilst a 22 gauge piano wire round a piece of dowel or a similar fitting could be made for damping to a nail to form a coil spring, bend the ends as shown car running board. in the sketch, and slip over the comp, screw. The Over to Ben Dutton now, at Yucatan in Mexico. odd piece at the bottom will dig into the cylinder I le gives us in It. a simple and effective method of head, aud the other end will lock itself over the simulating landing gear legs on scale or semi-scale tommy bar on the screw. models. Add a right-angled arm of wire to the top In last month’s Model News feature, we pub of the cantilever undercarriage leg. and cut from lished a flying view of F. Adcock’s (Toton, Hants) thin aluminium sheet the desired fairing shape. vee tailed rubber model. In sketch II we have an This should have an allowance for " wrapover " to insight on the novel trimming method for the two go around the wire leg and arm. and the fairing is independent tailplane halves. Fixing brackets go then crimped in silu by squeezing around with on the fuselage, and through them passes a pin pliers. From the same inventive gent, conics with a " U " section attached. On the trailing edge gadget (), for making odd size wheels for a scale of each tail half there are small extension bars, and job. All too often we need tai(wheels of 17/32 in. these pass into the " U’s To adjust incidence, diameter and similar odd dimns. Hen suggests that a the pin can be shifted up and down to a range of chunk of India rubber cut to a square section ring several degrees, and for turn trim, the tails are and fitted over a hand carved or lathe turned lx»ss given different angles. docs the task perfectly, and the “ tyre " is easily l i . our last, but by no means least ingenious of rounded off after fitting on the hub. Should be ideas this month, is another from Ho Loon Shu. specially useful to the solid fans. It concerns wheel retaining for bigger models, and Northwards, in the American continent, to his suggestion is that an admirable collet is to be Baltimore. Maryland, from where Jim Morton found in every light switch, and a good many other sends a kink on auto tow control for gliders. electrical fittings as well most useful, Mr. Shu . . . II is his idea, and a quick glance at the sketch at which we switch OFF and wish modellers every- shows how the standard auto rudder line is where a specially Merry' Xmas and all the very best bifurcated at the rear end and another auto tab for a successful new season's flying in ’54. 'Ύ£©ιΟ € 1 ^ ©©© Ο Ο ©I % 0 0 < D O O ^ O Ο Ο Ο Ο © ©Ο θ £ p o o o f b o ^ fiO -C o r i I No. 59 December, 1953 |U llfllllilllllllllllllllll||l!!ll|j;!lliH!||l|lllllli!j THE FUMY SWORDFISH by G. A. CU LL In prr-inir /Iner# a Sicordfifth. /fo irn ftoio, rirrlrm it λ c a r r ie r . (Photo by C. F. Hfomm.) :i;t !i!i!fi:;iiiiiiiiii!im i:iiim ii!iiii!iim iiniii f HE direct ancestor of the Swordfish was the rear cockpit! Naval squadrons operated from Texperimental S.9/30 which was destroyed in a shore bases, in N. Africa, and at night, flareladen crash, but the design was revised to become the Swordfish became “ Pathfinders *’ for R.A.F S.38/34 with a longer fuselage to cure the previous Ijombers. It was here that a determined pilot spinning trouble. The prototype appeared in 1934 established a take-off record, for his Swordfish was mimlxrrcd K.4190 and soon went into production so loaded that the take off run was found to have as the Swordfish I with a three blade fixed-pitch continued for seven miles across the desert before a Fairey-Reed propeller replacing the prototype's bump sent the staggering biplane into the air. large two-blader of the same type. Being a Another Swordfish was put down on a beach after toijxxlo/sqjotier reconnaissance type, tite design the lower starboard wing had been severely hit, and called for a crew of three, patrol range and the the pilot evened things by stripping the other wring ability to operate from the confined deck of a of its fabric before flying the " monoplane ” back. carrier with an 18-inch torpedo or other war loads. The tracking and continual attack by carrier With the ample wing area thu-. dictated and fitted Swordfish led to the destruction of the Bismarck in with the trusty nine-cylinder Bristol Pegasus, the the N. Atlantic, and another historic action was at Swordfish was adequate for F.A.A. needs. Arma Matapan Most heroic of all Swordfish exploits ment comprised one *303 gun on a Fairey high was the attack by six aircraft on the three enemy speed mounting in the rear cockpit and a fixed warships making a break through the Channel on machine gun mounted on the startx>ard side of the February Nth, 1942. This won the first V.C. lor nose. Prior to the war the Swordfish was in service the F.A.A. but all Swordfish were last, mostly shot with \T»>s. 810. 811. 81*5, 821. 823. 824. 825 and 837 down by nghters which had to lower flaps and Squadrons and had also flown with floats when it wheels to keep on the tails of the slow Swordfish. was available for catapult operation from cruisers. During its long stay in production the Swordfish War called ίοτ increased production and the major Us 750 h.p. Pegasus 111 M.3 gave way to the 1,066 share of Swordfish production was transferred to h.p. Pegasus 18 and 30 of the Mk. Ill but the Blackburn Aircraft, whose products were named 2,390 Swordfish built remained substantially " Blacklist! ” though the affectionate name " String- similar to one another. The last built was an bag ”, earned by the Swordfish’s wire-work in a A.S.V radar-equipped Mk. Ill ” Blackfish monoplane age. applied to all machines. NS.204, but it is NF.389 which is preserved in leaded with flares, bombs and torpedos. twenty flying trim at K.N.A.S. Lee-on-Solent for all time. Swordfish flew from If.M.S. Munitions to attack S p r t iH u ilio n . Span 4Λ It. ft Inn l ength rift It. 4 ivi*. (Floatplane) the Italian fleet in harbour at Taranto on November III it. II 108. 11 right Kt it. in*. (Floatplane) tl ft. 7 tus. Wing 11th, Ifilo. and they sank and immobilised the best a 542 so. ft. In}!·. Weight 4,700 IIm I wlcd VVdjlit 7Λ10 lb* I tomb load 1,500 lb*. Maximum Speed 120 ni.p.b. -it 5.000 ft. part of the enemy navy. Extra fuel for the six and Crtiiftnitf Spot-Ι lift ni.Vh. ;it 5,000 ft. Climb 1.220 :t./m in. Landing a half hour trip replaced air-gunners, and it was Speed oT m.p.h. StfvKo Ceding 10,250 ft. Kongo 760 m iltt Construction. AH metal Kiy biplane with kiting wing* declared that success was due to the Swordfish's ! tube frame with vtringn fairiQg at rides, bottom great manicuvrability. Only one machine was lost. and decking. Forward tutelage covered with detachable Alelad anels. rear U fabric covered, “ A "-Imme dt:ck Imok titled. Wing* in 1942 when U-boat activity was at its worst in ave two sti-el 8pars each with steel eonipressdon sinus and dural lattice ril»s. Who:* fabric covered. Steel intrrpl ane stmts outboard the N. Atlantic, the Swordfish provided cover from and at fold Dinghy in upper port wing. Four ailerons with tin the small decks of merchant aircraft carriers for the itrut, slats oil top wing onlv. Normal wire bracing. Tail plane strut and wii»· brsood VlUt variable incidence. Tail unit ol unxed tttd / middle 500 miles which was beyond the range of dural construction and whole is fabric covered· shore based aircraft. Whilst standard disposable Colour. Thr Swordfish served in so many io|r*. in so many theatres and over so long a period that very many scheme* an* applicable, loads amounted to depth charges, mines and rocket hull colon ring information appears on page 753. The surviving projectiles, less harmful external loads have been a machines are stiver overall and modellers favouring ·' invasion ” stripes should apply these to all lour wing*. Some machines on motor-bike and a bag of golf clubs. As many us Channel night opi. were matt black aB over with no roundel* or five standing passengers have been carried in the markings at all except serial n u m b e r* . December, 1953 757 l/72tul urate · · J " /»/;<«* reprint*, and 1/iSth *calr" ,1 " type liyelinr print h o f I h i it d ra w in g a r t · available price ttd. «V 1 / - respectively, post free, from the .loro mot lei lev Plans Service. ι™ KMMLQSi) 758 December, 1953 C L U B N E W S S the active flying season closes, so the number of chib reports creeps up- -this month we are V fairly inundated with them. Keeping this preamble to a minimum means one or two more clubs mentioned, so without further ado let’s go over to : S r o t ln n d It’s reported that new lochs liavc been formed by Scottish tears, shed at the results of the 15. K. Challenge Match held at Toome airfield, North Ireland, on Oct. 18th. With the English team winning the honours and Ireland second, the Scots were " also rans GALSTON & DISTRICT M.A.C. held their first contest for junior memlx-rs on Sept. 27th with all models competing in tIre one event, regardless of type. K. McCrorie and \V. Wilson, both juniors, Hying their first power and only their second models, put in many fine flights. Results of the contest were as follows :— 1st. W. Wilson (power) ; 2nd. H. Bowman (A.2 Glider); 3rd, J. Hood (power) ; 4th, R. McCrorie (jxiwer). W. B. Brenner, I'.R.O. of WICK M.A.C., dips his Inn Ihirici* (centra)confjratutote* Vvtct mnernn Croydon quill in thistle-juice to write" With the North ami Dieli Etintonet* of High Heroin/»#*, tHnncrn of the Ihiries Wind beginning to blow again and snow clouds looming 'I roiihirH at l^ntff nn ftet. isth . up on the horizon, the thoughts of club members turn new contest hazard—man-made downdraughts (in the to winter building programmes. The club has recently shape of a helicopter) which heat his lloppity into the procured some premises right on the main street, and deck ! The club were a distant second to SOUTH half way between the local model shop and the airport, BRISTOL in the M E. Cup. in fact ideally suited in every respect. The present activity is very varied and well up with times, a Anglian Area Paageboy being a regular performer and a Pushy-cat Some ninety static models from NORWICH coming off the board shortly. Team racing has also been M.A.C., plus non-stop combat living, attracted popular, a selection of Philibuster, Hornet, Courier, considerable interest at the Battle of Britain exhibition Old Slippery and Dumpy, has regularly been bashing at R.A.F. SI. Faiths. A club visit to Radlett and much the circuit. Λ veteran Debutante has also been doing team-race pract ice have occupied members’ time lately ; well, with only one major repair in over 2(H) llights research into home-brew fuels threatens some motors (this occurred in an argument with a car—the car won). with untimely ends. There is also promise of big things to come, with a Calamity Jane nearing completion ami a Bowden .South H ales A run White Wings on the boards latest dodge seen on the A visit to the Sophia Gardens Pavilion, Cardiff, flying fields these days is the wing trim tab used by between November 30th and Dccembor 5th, will Bill Meechan. West of Scotland area comp. secy. interest modellers in the area. CARDIFF M.A.C. is Tliis is used for tow and turn trim on Bill's A.2 and supporting the " Model Engineering and Hobbies ” takes the very simple form of a *’ Star ” type· razor exhibition there and should be able to put up a good blade placed sharp edge to the wing’s trailing edge, and live show, since a 65 ft. circle with 30 ft. headroom will hinged there to with a piece of Scotch (of course !) tape. permit short-line C/L demonstrations. The method of afiixment allows easy span-wise adjust Soul horn Art*» ment until correct trim is found. Bill then marks the The BOURNEMOUTH M.A.S. journal tells us position and when finished Hying, removes the blade. that a thoroughly enjoyable day was spent at Radlett " After all ”, lu· comments, ” a fellow has to shave ! ! ” by a group of club members, despite several prangs. I r e la n d R. Hirdes used several rolls of cellulose tape to hold his The 13th Irish Nationals proved one of the finest on Quickie together long enough to place 4th in glider, and record. l>eing particularly lucky with the weather. the same flier has done well in local and area glider J. Carroll won glider with 12:01 and also cleaned up comps. J. Manville topped the area Oj>en Power event. stunt ; G. Drew collected 0 : 54 to win Wakefield and Λ wide range of contests keeps interest high. G. Woodworth scored 13: 40 to head the power fliers. Radlett also attracted a coachful of KAHNHORO' DUBLIN S.M.E.E. took home the Chib < hampionship M.A.C. members and gave tho chib a much-needed trophy. Among notable visitors was Mr. F. Aiken, boost. Only one record is claimed at present—F.F. Minister lor External Affairs ; the Irish ln>ys are now power, 3 : 05 o.o.s. by J. Wetslea. About half-a-dozen wondering if the 1054 Wake Λ Power can be classified Puageboys are flying in this club. as ” external alfairs ’’ 1 \iirflieru A ir a A re a Radio is attracting attention in the FORESTERS l^ack of support from the area clubs has spoiled M.F.C. G. Pike lias converted a 7 It. sailplane (by several of the area meetings this year, but those who adding a tiny u/c and an Amco -87 with 10 oz. pres have rolled up have had some enjoyable Hying. surised tank and Walker regulator) for a duration BRISTOL ik WEST M.A.C. came up with a contest record attempt. An ingenious touch is the automatic for biplanes, limiting rubber to | ozs. J . Berryman won shut-off should no signal be received for one minute. with 2:05. A fortnight later K. Richards discovered a After a preliminary 22 minutes hop the Amco lifted its December, 1953 759 iM D jm iia EPSOM D.M.F.C., V. Bolt’s Jetmaster model turning JETEX INTERNATIONAL CONTEST 1. W . Houghton Rhyl 10.46 ratio (Jetmaster) in over 100 m.p.h. The clubroom is always full of this 2. H Tubbs Leeds 961 <1001 type of model, though rubber K.T.P. is getting a look-in. J. F O Canned RAF. 9 10 (SO) I : 51 being top duration so far. I-atest bombshell is a 4. R. Twom ey Cardiff 907 (200, 5. N . W a rr — 838 (100) small kit job. modified to take a Dart. 6. H. O ’Donnell White-field 7-40 (350)* * Top junior. J. Palmer and A. Albone both produced five maxs. U.K. CHAMPIONSHIPS and fly-offs of nearly 5 mins, and 3 mins, respectively Rubber to put CROYDON D.M.A.C’s name at the top of the 1. J. O'Donnell England 9 : 00 2. H. O'Donnell England 9 : 00 Guttcridge list, while the 33 00 agg. of Gat laud 3. L. G ra y Ireland 6 : 53 (3 maxs.). Palmer. Cameron and Marcus, all living A2’s, 4. G . D rew Ireland 6 : 09 won the M.E. Cup for the club. At the All-Britain. 5. J. BUckmore England 5 : SI 6. N . O sbourn Ireland 5 : 47 R. Yeabsley collected the Victor Ludonitn on top of Pow er 1st rubber and 2nd glider; N. Marcus topped power, 1. G. Upton England 7 : 34 and G. Perkins ran 2nd in power floatplane. P. 2. S. Lanfranchi England 7 : 14 3. J. Bod Scotland 6 :06 Cameron’s fastest T.R. heat of the day ended in a 4. T. Kearns England 4 : 35 calamitous final, when the ETA " blew its top ", 5. F. McDonnell Ireland 4 : 20 6 N . M arcus England 4 : 17 Winter contest fans have several weeks left before G lid er BLACKHEATU M.F.C. stag, the Bill White 1. A Brooks England 7 : 30 2. L. G ra y Ireland 6 : 49 Memorial Cup (open rubber) and the Winter Glider 3. G . D rew Ireland 6 : 12 Contest, on Epsom Downs, January 10th, 1054. Pre 4. P. Russell Scotland 6 02 entry is requested (Is. per contest, both for Is. 6d.), S. G . Linford England 4 : 52 6. G . Byrd England 4 : 38 entry forms available from J. Sncwin, 240, Eltham En eland IS pts., Ireland 8 pts., Scotland 7 pts. No W elsh team High St.. Eltham, S.E.9. RIPMAX TROPHY 1. S. A llen W e st Essex 405 pts. 2. M. Rhodes H arro w 397 λ o rlli IVe.Htern Α η ·.ί 3. W . M errick M alvern 339 4. E. C. Sills Bedford 324 Fortnightly meetings of the BLACKPOOL & FYLDE M.A.S. have recommenced at tin* Kite Club. Squires Gate Aerodrome, Nov. 19th. Dec. 3rd, 17th and 3 | lb. load at the end of a 50 yard run on the first official so on at 7.30 p.m. After a busy season, attention is attempt. Darkness approached when the model had being turned to local competitions with the accent on been airborne for 26 minutes so he cut the motor and novices, chuck gliders, and similar enjoyable events. brought the model in after a 38 min. total. On the next In the 1954 Wakefield eliminator at Tilstock. H. Sunday, a two-hour flight was anticipated, but after O’Donnell ran second to B. V. Haisman. who recorded 15 mins, the little Amco gave a moan and seized. only 10 secs, short of fiv« maxs. Another WHITE- BRADFORD M.A.C. placed well in all the Area FIELD M.A.C. member. A Bagnall. was third In eliminators, as witness rubber: 1st N. Lees (14:22) the Davies eliminator P. Cridclle flew Harrison's 2nd D. Lees, 3rd C. I*. Miller ; Glider, 2nd S. Eckenricy ; E.D. 2 46 job over 10 miles in 11 : 52 to place second. Power, 3rd S. Lanfranchi. A. Collin son was top area A junior, Λ. Crane, headed the A.2 olim. a fortnight man in the Halfax, returning 8 : 32 with an Eliminator. later, returning 12 : 09, with J. Parrott 2nd and South IVesteni Area J. O’D. 3rd. Top club power scorer was yet another junior, E. Mordnt with 12 : 34. Other successes include A concours d’elrgance marked the commencement A. D. Bennett’s scooping the Northern Power Cham of ILMINSTER D.M.A.C.*8 tlnril year. R. Pcppitt’s pionships, J. O’D. taking the Area Rubber Champion Stinson 105 proving the winner. The club have taken ships (3 maxs.) and H. O’D. collecting top junior greater interest in contest events this season, with a award in the International Jetex contest. A hint as to steady improvement in the standard of flying ; K. Priest why this club is so successful is given by J. Trainer and K. Lattin placed first and second with their who cycled fifty miles to hunt his power job. lost at Eliminators at the Seaton Rally. Tilstock. Keenness counts ! Outdoor Jetex K.T.P. speed is the craze in the WEST BUCKLAND M.C. ('». Snell’s 72 m.p.h. is fastest so J.O’D. pops up again as secretary of the new far, but tlic 100 m.p.h. is the target. Λ development of ENGLISH ELECTRIC M.A.C. Formed at the this type of flying is 50-powered near-scalc models, Wharton branch of the firm, interest is stimulated at conforming to plan and side view, which ruling has the Preston and Salmsbury divisions, and the manage led to many six-sided jobs being produced. J.A.T.O. ment arc all for it. With the Chief Designer and Chief experiments with an E.D. 3 46 powered Eros, boosted Acrodynamicist as patron and president, and several by two Jetex 200s and a Jet master, are planned. “ names ” already members, this is a club to watch. C1IEADLE D.M.A.S. have enjoyed an active I .«melon A rea season, despite several members in the R.A.F. and Mention of the NORTH WICK PARK M.A.C. m slightly over average share of bad luck. Eric Taylor has these columns has swelled the ranks to over 40. Contest proved that B.K can do it too—his model box got lost successes iucludc ]). Leech winning glider at the All- on a train, though it was after the contest ! Despite one Britain Rally with his O/D A2, G. Upson's 3rd (in area) of the rubber team waiting three hours at the wrong in the Hal lax with five maxs. and a 4 : 53 fly-off, and venue, one model losing itself, one disappearing into the same flier’s top place in the U.K. Challenge Match. cloud, and one written off with a motor breakage, the The club team raised 30 : 28 in the M.E. Cup. special club team managed to win the Greenhulgh Trophy at credit going to 14 yr. old A. Syine, who returned 7 : 10 Bolton. Other successes include topping the area’s with his Corsair—lus first comp, model and his first team glider results on September 13th with 24:09. comp. Sport and R/C models are coming oil the boards W. Nicld taking glider. B. Faulkner rubber, and C. in droves, ready for some steady winter flying. Gardiner power, at the Hyde rally, and B. Hoolcy's Jetex speed jobs, K.T.P., were shown at Kudlett by collection of the “ Area Champion ” label. 760 December. 1933 South Hiilljind Area The 11)54 eliminators were all flown at Hcnlow under excellent conditions. Top Wakefield man was Cooke of Henley with 12:01). top glider J. Lambic (West Herts), 13 : 30. and R. Moulton (West Herts) returned 11: IK to head the power list with his Komet. In the M.E. Cup, Cripiw of West Herts was top individual Hying a Tadpole. On A. Cooke's second Gutteridge W IN D - THE m t/A V flight, he set a new HENLEY M.C. Wakefield record of rue p/eC£(S)f with a fine flight of 11: 10 o.o.s. R. Brown of LUTON D.M.A.S. won both the Collins Shield (Wakefield) and Kmmerton Prize (open rubber) with his Wake, followed in each event by R. Clements, JETE-X > who took the Sanderson Trophy (glider) with his A2. T t J V * PftCIN^> /«fOAi I N T t U J t W F. Chapman’s Lulu was second in the Sanderson. A great deal of sport Hying is going on. and J. Symmond’s W/U- FIP fcVENrs> delta A2 (! ?) and S. Miller's radio job are noteworthy. ,/G* S6JM»lANB> c THE ( Several coach trips and much local activity are re spectators1^ ported by the MAIDENHEAD REBELS M.A.C. iONTftoL R. Chandler’s Corsair holds the club glider record. 7 mins, o.o.s., found 13 miles away. Tho local fire brigade turned out to retrieve M. Plummer’s Elimin ator from a 90 ft. poplar, but had to leave it to tin- wind. A radio receiver has been presented to the club by F. O. Godfrey and should provide much interest. rut last R i T E r ^ humeroos ft/neMRV PYfifi D. Mander, of 22 Cherry Tree Walk, Conev Hall, UT OP TWt —IT WAS West Wickham, Kent, tells us that SPRING PARK **ueA twav M.A.C. members have found an unidentified model in a wood. It is a 30 in. black, white and grey cabin job, built apparently from a kit and powered by a Mills 75. Wlillami Area If there was a name and address on it, it must have M fm pf io5 fun ia tho shot for WORKSOP AERO- been on the fin, which remained up the tree. MODELlkUS, an Jasco Models arc intended to provide the younger modeller with u sound foundation in the basic prineipleMof buildingand Hying. Model dealers will appreciate that to cultivate the beginner of today will create future aeromodellers. Two high capacity Elfin ^ 4 / &t£ · JA5C0 TROJAN models which have proved thoir worth against Inter national competition, and for ENGINES Stol· with continual refinement are providing an efficient answer to many power problems Made by AEROL ENGINEERING LIVERPOOL, 3 Home Trade distributors through: E. KEIL & COMPANY LTD·; LONDON, E .2 Fully pn-fabriculrd kit. All parte cut uul tf'quiiiiif' only sanding and anom · bly. Thou*aude of thrsr modrU hare keen built and flown by beginner*. 39, Parkway, CAMDEN TOWN, London, N .W .I. PhoneGUU.verieie K ip A t e m (one minute from EVERYMAN'S MODEL SHOP N orthern line tube station) THE RADIO CONTROL SPECIALISTS77] TELECOMMANDER COMPLETE OUTFIT ONLY £9. 3.10 Including Escaperrwnt φ 1000 yds. £4.3.0 range. Fully Guaranteed. E.C .C .I0 6I MINIATURE £4.J.O HAND TRANSMITTER E.C.C. ENTIRELY SELF CONTAINED >>IA • PUSH BUTTON • 2* ox CONTROL lunc • MAXIMUM OUTPUT change • EXTREME RANGE Fully prefabricated kit. All part* requiring only sanding and • 1000 hours valve Irf# ______! assembly. 36 ins. -pan. TRADE DISTRIBUTION NEW E.C.C.202 ONLY Ι7Ί0 A. A. HALES LTD., LONDON. N il. H. J. NICHOLLS LTD.. FIT A FENNERS-PIKE SERVO LONDON N.7. WARNEFORD MODEL A C.. LONDON. This NEW unit gives proportional rudder control S.E.IO. ATLANTIC MODELS. BIRMINGHAM. 5. HAMILTON with Single channel Radios PLUS one E X T R A MODELS. NEWCASTLE-ON-TYNE. control such as motor or sequence clevatorl SERVO UNIT 68/- CONTROL BOX 50/- Manufactured by JASCO M ODELS, Southport, Eng· ALL PRICES POST PAID Kindly mention I HitOMODELlJiR when replying to advertisers 762 December, 1953 RAWLPLUG INDISPENSABLE IN THE W O R K SH O P DUROFIX HANDY IN THE HOME PRODUCTS The indispensable adhesive for instant use on crockery, glass, THE RAWLPLUG POPULAR OUTFIT wood, metal, celluloid and the Larger sizes orc obtainable. Whatever vour fixing problem*, there's a thousand and one things hand Raw!plug Device that will solve it for you led by the hobbies enthusiast. —easily and quickly. Rawlplug* make neat and absolutely firm fixings in any material Instant drying, insulating, water from brick or tile to alone or slate, with a proof and heatproof. Durofix size for every screw from No. 3 up to }' is grand for repairs to coach screws. Rawlplug Tools ere easy to uie electrical, sports and and ensure a perfect hole without damage to rmmdiim surfaces. Other Kawlnlug Devices in leather goods. Durofix clude Raw]bolts for heavy duty fixings, RawUnchOrs and Thinner and Remover is Toggle Bolts for thin or hollow materials and Rawlclips for instant sold in handy 2 oz. bottles. fixing of conduits and cables to girders—a device in fact tor every need. HAKES SOLDERING SOLDERING IRONS CERTAIN AND SIMPLE Thia is a guaranteed electric tool which will pay for PLASTIC WOOD itself many tunes over by repairing and giving longer i&AWLPtUG APPLIEO LIKE PUTTY, DRIES LIKE WOOD life to metal household good*. In the workshop it is indispensable. Supplied with Standard bit. Hatchet or Can be cut, planed, polished and paint Pencil bit. Voltages lOO/llO, 200/220, 2JO/2JO. ed like wood. Will take nails and screws Universal AC/DC. likc wood. 11 docs not blister, crack or f P1RAI decay. Rawlplug Plastic Wood is FLUTED MASONftV DURIUWI DRILLS 8Ι5ΪΗΚΒ5* actually the best quality product of DULLS its kind on the market. Plastic CAN BE USED IN A HAND BRACE Wood Softener and Remover is sold in handy 2 oz. bottles. Spiral fluted masonry drill* which can be used in a hand-brace for boring clcuu round holes easily and quickly in brick, «tone, marble, tile, etc. They have fifty THE RAWLPLUG COMPANY LIMITED lime* the life of ordinary drill» because the Durium Carbide tip is harder than any metal or alloy. Sizes from CROMWELL RO A D * LO N D O N S.YY.7 5 /3 2 " to i " diam . and in long length* for penetrating right through walls. ior »■■■■■' - ...... ■ ■■ ■ μ ■ ■ Hindi!/ m ention AEUOMODEIJ jEK nhen reph/inf/ lo advertiser* December, 1953 763 The ‘fractional’ that’s an INVESTMENT T h e sturdy Hoover F.H.P. motor can be seen in workshop after workshop. What a little giant it is! There's no end to the variety of jobs it takes in its stride. Home workshop enthusiasts regard the Hoover F.H.P. as an investment. They're right. If you do a lot of bench work you can’t afford to do without this absolutely dependable source of power. Competitive in price — it’s money wisely spent. If your dealer is out of stock write to : INDUSTRIAL HOOVER LIMITED PRODUCTS DEPARTMENT CAMBUSLANG · LANARKSHIRE · SCOTLAND YOU like them,can find SUCCESS through ςί^ΒΕΝΝΕΤΤ c o l l e g e THOUSANDS OF THANK YOU LETTERS ARE SIMPLE PROOF OF THIS UNFAILING WAY TO PASS EXAMS AND GET TO THE TOP WHAT TO DO There are over a B U IL D E R “ I have passed T E A C H E R « I have received the The Building Inspectors' hundred different Bennett College Courses. Whichever one you lake, you results of the College of Preceptors Examination of the Inst. Senior Certificate Examination . . . Mun.H. May I express my will receive the p onona l attention of appreciation of the great picked tutors. Choose your subject from They arc: — Credits: English, Geom assistance you have given (he list of courses and tear (Hit the etry, Algebra. Distinctions: Arith me. The Course was an coupon. Send it off now. You will metic. English History, Num. excellent preparation for receive the appropriate College Trigonometry. I would like to thank The Bennett College for the excellent this Examination, and I can Prospectus. tuition received, without which I could not speak too highly of your If you don't see the course not have successfully taken the lesson papers.” E.M ., ou need, indicate the subject Watton-at-stonc, Herts. ?n which you are intorosted examination after onlv six months part on the coupon and wo will time study . . . I shall not hesitate to gladly advise you recommend die College." t F.B ., Manchester, 8. Choose the course you need M Agriculture Locomotive Engineering Steam Engineering Modern Business P r o THE BENNETT COLLEGE. (DEPT. L.119) SHEFFIELD Architecture Machine Design Surveying Methods Aircraft Maintenance Mechanical Engineering Telecommunications Shorthand I Plea it tend me your free prospectus on: Building Mining Television English Carpentry Motor Engineering Teacher ot Handicrafts General Education SUBJECT. Chemistry Plumbing Wireless Telegraphy Geography Civil Engineering Power Station Works Management Journalism Clerk ot Works Engineering Workshop Practice Languages Commercial Art Press Tool Work Accountancy Exams. Mathematics Draughtsmanship uantity Surveying Auditing Police Subjects AGB ( if under a t )- Electrical Engineering Sodio Engineering Book-keeping Salesmanship _ «'rite in Hock Utters Electric Wiring Road Making Commercial Secretarial Exams. Engineering Drawings Sanitation Arithmetic Short Story Writing j*. To prtitrve secrecy models are used for photographs and Fire Engineering Sheet Metal Work Costing and many others ^ initials instead of the original names. The original letters GENERAL CERTIFICATE OF EDUCATION R.8.A. EXAMS may be seen at Sheffield with thousands Hke them. Kindly mention AEltOMODELLEH when rvplyiny lo advertiser» 764 December, 1953 FLUXITE A Happy & Prosperous SOLDERING Christmas & New Year FLUID The perfectly to All our Customers balanced fluid flux A GOOD COMPANION TO THE WORLD-FAMOUS The standard FLUXITE sires a re : 4 fluid ozs., PASTE 8 fluid ozs., 20 fluid ozs., I Gallon Cans. Ε ,Ι Λ ΛΙΟΙΜ Ι S l’m i K S FLUXITE LTD. 272-271 IIHill STREET, SITTOY, SI RREY Dragon Works. Bermondsey Street, T elep h o n e: VIGilaut 8291-2 London, S.E.I T e le g ra m s: Timbcrlaw, Sutton SILVER WING Moux-to-do-it Magazine of. US. S u p e r h M o d e l d c m Solids Read FLYIN G MODELS, HUNTER SWIFT, SKYKNIGHT, the only American magazine METEOR, MIG-15, devoted exclusively to SKYROCKET, SABRE, model aviation ! Every issue Includes how-to- build data on new model airplanes of various GLOSTER JAVELIN, A range o! 12 authentic 1,72 scale types (with full-size plans wherever possible) HUNTER, SCORPION, Jet Fighters com plete with cockpit Alt one P rice . . . worth-while hints . . . photographs . . . how- YAK-25. ATTACKER, covers. Easily the to-do-lt Information . . . and features for sport finest value for 2/6 THUNDERJET money in the trade. including P.T. a-plenty ! Send for iffustroted fists. At last. D A Y -G L O in a small handy pack selling Published every other month. at 2/6 per jar. Annual (6-issue) subscription : 12/6. The BRIGHTEST DAYLIGHT FLUORESCENT COLOURS IN THE WORLD In five glowing shades: Neon Red. Signal Green, Mall your order and remittance to-day to : Arc Chrome. Fire Orange, and Saturn Yellow. ATLAS PUBLISHING & DISTRIBUTING CO., LTD. iia i i w > io m ;is l i m i t *:» (D ept. A). RICHARDSON STREET, HALIFAX, YORKS. 18 Bride Lane, Fleet Street, London, E.C.4. lxinttly mention .If t ’/fO .W O /lA ’U . O trhen roplifinif to mlrertisers December, 1953 765 for every mode/makers kit top-flight Scotch boy MOO. TftAO· HARK models THE ORIGINAL deserve CELLULOSE TAPE top-flight finishes . . This self-sealing cellulose tape sticks cleanly, quickly on any surface, it’s • SEALS joy-plane tough and transparent, holds perman ently, mends invisibly. It comes in a • R EPA IRS DURABLE LASTING FINISHES handy red dispenser, for instant use. JOY-PLANE CELLULOSE DOPE • FIX ES OTHER HIGH QUALITY JOY-PLANE And think how useful it is around Ideal for a really first-class PRODUCTS ARE AS FOLLOWS : BALSA CEMENT. RUBBER the house as well. finish on Paper, Glass, Metal. LUBRICANT. PLASTIC WOOD. Chma Twsue Paper. Plaster. GOLD DOPE. SILVER D O P E . Wood, Cardboard, etc. BANANA OIL No. I Th.ck, No. 2 Th.n. HIGH GLOSS WATERPROOF FINISH. Water. Heat. Petrol and GRAIN F IL L E R FLAMBOYANT Greaseproof. Dries in I hour FINISH-THE NEW COLOURED METAL or less. T i n s - _ | ^ z. |01d. SHEEN FINISH WHICH IS MORE DURABLE THAN DOPE. COLOURED and 2J-oz. 1/6. AND CLEAR FUEL-PROOF FINISH. Made by the Minnesota Mining & Prices andsizes to iu>r all purposes. Ask your localttockift for " JOY-PL AN E11 products Manufacturing Co. Ltd, Adderley Park. Birmingham. 8 If οηγ difficulty m obtaining, a postcard to TURNBRIDGE LTD., London. S.W ./7 will bring the name of your nearest stockist. THE No. 3 C e l s p r a y MODEL MAKER’S For paint, Ce//u/ose, SPRAY GUN Lacquer etc. Celspray Guns arc specially designed to operate at high effici ency without the use of expensive air plant. For a perfect q / j r finish on Model A ir- C S 0 craft, wood, metal, etc. post free Complete with Guaranteed Spray Unit, m liv. Air Bulb and connector, empty 2- o;. screw-on container and instructions fo r use. No. 2 SPRAY GUN GUARANTEE < FOR CAR TYRE PUMP Precision made in \ OPERATION including brass and duralumin \ ^ S p ray Unit, valve, 4 it. to gi re trouble-)rec S service indefinitely, \ tu^'n2'conta'ner erery spray unit bears s S— and instructions tin's guarantee C for USC. post free from leading re fallen or direct from : Order from your usual suppliers and not th· sole makers— Department I YEBB ACCESSORIES LTD Electrocult'Works, Station Road. Harpenden, Herts. Tel: Harpcnden 3789 John & Will. R399, Ltd- e l d o iv S*s T m ^ H E T T IE L D Kindly mention AEltOMODl.U.IM " hen replying to advertiser* « m a n 766 December, 1953 IlllllllllllllllllllilllllllllllllllllllllllllinillllllllltllllllllllUlllllt^ Modellers can be assured of personal service coupled Ξ with expert knowledge of modelling requirements at any of the following shops. LONDON Tel.: Hop 3482 MODEL AIRCRAFT SUPPLIES LTD. 171, NEW KENT ROAD. S.E.I The oldest established model oircraft shop in London Service with satisfaction from H a r r y Y o rk T d : Melbourne AUSTRALIA, Cent. 918 DONCASTER MANCHESTER GEORGE MASON MODEL SUPPLY M.A.I.A.E. B. CUTTRISS & SONS STORES 4. PRINCES WALK. 17. BRAZENNOSE STREET. MELBOURNE C.l 49. CLEVELAND STREET. MANCHESTER 2 Manchester’sMain * Mecca' for e eery make Australia's Main Distributor fo r: of KIT. ENGINE & ACCESSORIES. Solarbo. " Acrom odelftr ", " M o d e l M aker " and Call and sce our Shop BALSA, etc- their Plans Sennet Northern SKYLEADA Factor T*L: Tel.: Central 5630 Tel : BLA 9221 BIRMINGHAM Northern 5569 GLASGOW. MANCHESTER THE MODEL CALEDONIA THE MODEL SHOP MECCA MODEL CO. 13, B O O T L E S T R E E T . 204-206. W ITTON ROAD. Model and Precision Engineers BIRMINGHAM 6 OFF DEANSGATE, S. PITT STREET, C.l MANCHESTER 2 AlWcJ Aircraft Kits and Accessories Our works at your service for engine 5 & 5o Buses poss the door. Write, 'phone repairs and rebuilds. The Model Aircraft Specialists. Mail or call Everything for beginner and enthusiast orders by return. Post Free over 10/— BIRMINGHAM HARROW Tel.: Pmner 6459 Tel.: Rye 2150 TURNER’S THE MODEL MODELCRAFT & MODELDROME STADIUM HANDICRAFT 734. PERSHORE ROAD. $. VILLAGE WAY EAST. SUPPLIES SELLY PARK. BIRMINGHAM. 29 RAYNERS LANE. HARROW, Model Aircraft, Railways. Ships Keil Kraft, Veron, Jctex. Frog. Soltd Km . MIDDLESEX 14, CINQUE PORTS STREET, Accessories, Solorbo, Balsa. Mail Order The only hire purchase specialist offering RYE, SUSSEX Service. Truong OO Railway* no deposit terms to established custenners Prompt Postal Service. Catalogue available T e l: Vigilant 8291 ESSES» Teh: 7097 HONG KONG RADAR COMPANY St»r**y’* Hobby Centro RONALD SCOTT ALL MODEL AIRCRAFT SUPPLIES F T,.S. MODEL SUPPLIES The Model Specialist American, British arid Japanese model aeroplanes, engines. Jetex-outfits. race con. 272, HIGH STREET. 147, D E R B Y S T R E E T AGENTS: for Solarbo, E.C .C . " Britfix M· SUTTON, SURREY Tenshodo Trams, Japan. Stockists of olt aeromodelling accessories. The obvious shop for oil Model Aircraft 40-D SHAN TUNG STREET, Also railways, ships, cars, etc., by return Requirements MONCKOK, KOWLOON portal service Tel. AMHerst 2928 T e l: 4778 CROYDON LONDON SWINDON , HESET MODEL ROBSON’S HOBBY’S CORNER SUPPLIES 149.151, MORNING LANE. 24. FLEET STREET, 61, BRIGHTON ROAD, HACKNEY, E.9 SWINDON. WILTS. SOUTH CROYDON. SURREY 4fcnu for Keil Kraft, Veron, Frog, Jetts, ALL model aircraft kits and accessories, A 100 per cent, modelling shop, run by a etc. Also Accessories, Engines and Mad ’* 0 0 " model railways, ships, X-Acto modeller for modellers Order Service stockist. Mail Order Service DARTFORD C onditions o f Sale .... MODERN MODELS This Periodical is sold subject to the following conditions:— That it shall not. without tho written consent 12, THE MARKET, of the publishers, be lent, resold, hired-out or otherwise disposed of by way of Trade except at the full retail price of 1/6 and that It shall not be lent, resold, hlrcd-out. or otherwise disposed of In a mutilated LOW FIELD STREET, DARTFORD, condition or In any unauthorised cover by way of Trade; or affixed to or as part of any publication of KENT advertising, literary or pictorial matter whatsoever Whatever your needs, send to us or call, A ll advertisem ent enquiries to .... Telephone : W A T F O R D 5445 S.A .L for list THE * AEKOMODELLEK ’\ 38, CLARENDON ROAD, WATFORD. HERTS· December, 1953 767 EIFFLAENDER REBORING SERVICE FIELDBANK, CHESTER ROAD. MACCLESFIELD The Shop with the Stock GIG REBORES : BEES A ELFINS 12/·. all others 16 9 except HALFc..c. which are 18 9 and under 46 c.c. 20/·, all c.w.o.· ENGINES P O W E R K IT S E .D . B A B Y . 0 46 c.c. 52. 3 K .K . C H AM P. 20*...... 12/3 post paid. C.O.D. SERVICE 1/3 EXTRA. REPAIRS: send your E.D. BEE. 1 c.c...... 54 9 K.K. RANGER. 24' 12/3 engine or full particulars with S.A.E. for prompt, free estimate. E.D. HORNET. 1 46 c c ... 5 7 /- JUN. MONITOR. 30' 22 6 ALL OUR WORK CARRIES OUR WRITTEN GUARANTEE. ALLBON DART. 0 5 c.c. 64 2 POINT FIVE. 31* ... 9 - ALLBON SPITFIRE. 1 c.c. 64 2 LADY BIRD. 41' ... 21 7 W e have a sm all sto ck of E L F IN 1*4· and 2*4? crankcases. E LFIN . 1 49 c.c...... 56 2 SO U T H ER N ER M ITE. 32* 12 3 E LFIN . 2 49 c .c ...... 66 6 S T U N T Q U E EN . 41- 24/4 M ILLS. 0 75 c.c...... 58 - SLICKER. 42v ...... 20 5 D .C . 350. 3 5 c.c...... 78 5 C ESSN A 170. 3 6 ' ...... 21/7 --- CIjASMIPIKD ADVKKTISKWEVrs ---- Alto every Kit for Rubber-driven Planet. Glider* and Solid». P/eme odd pottage. PRESS DATE for January, 1954 issue, November 20th, 1953. JONES BROS of CHISWICK ADVERTISEMENT RATES: ftfl. Turnlm nt Green Terrace, ftiie w lrk, W .-I Private Minimum 18 words 4s.. and 4d. per word for Phone.· CHI 085S ESTABLISHED 1911 each subsequent word. Trade M inim um 18 w ord s 12., and 8d. per word for Γ ··ιι·ιη ΐϋ ·········> » ·ι each subsequent word. Box numbers are permissible— to count as 6 words when costing the advertisement. COPY and Box No. replies should be sent to the Classified HAVE YOUR AEROMODELLER Advertisement Department, T h e "Aeromodeller,1' 38, Clarend on Road, W a tfo rd , H e rts. BOUND FO R S A L E K.K. GO* Super Slicker (excellent condition) Frog: 500 (brand new Send the year's twelve copies, securely packed to plus simre piugn) £5. I Oh. 0d. o.n.o. K.K. Hover 14' (Nylon covered), K.I). lice £2. 5«. Oil. u.u.o. F. \V. 3 top true, 2, Old Field. Little AEROMODELLER BINDING DEPT., Milton, O x u ii. 38 CLARENDON ROAD, E.D. I l l Miniature Radio lTnit, complete (Ices XF(»1 Volvo), including 8.M.A. Motor, nearest. £6. Marshall, 8, Boardtnnn Streot, WATFORD, HERTS Todmordon. Luu<*. Monoeoupo 04*. Centurion GO*, with Javelin 119’*. Forks*·Wnlf, together with remittance of 12/6 Amix> 3-5. Mukkctccr. Frog 500, ne now, photos available. Offon. Wilde, 0, West bourne ltoad, Denton. Manchester. u ill be in clu d ed u ith each volum e. I kl H CV ίΛ ΙΛΓ *) / ndiees are available to all reader§ EXCHANGE | PI U la TO■ I/JJ on w“’p' ° f ° and £175. American Kngii»·*. Kite for motor cycle (Spriuguri Ariel addressed envelope. 1.000 c.c. or good twin, any make. Lynll. Stone Cottage, Flontall, Bromagrovc. TRADE North Rost Krigino Depot, Victoria Street, Goolc. Fuglin' |*art exchange specialist/!; specially minted, engines under l c.c. and iv Photo <|ui/. A i i n w p i ' n Fbxtur Oil and Anderson Spitfire Hi. Every deal guaranteed to v you. 7. Jelex SO. 2. Cement tube nozzle. 3. Modelling Make your own rockets and other propellants for model ears, aircraft, and boats. Safe and liwtruotlve. Illustrated booklet liwt. knife chuck and blade. -7. I-hid of a Snip timer published 2/1$. Dept. A.M.. 10, Nowtun Hoad, Southampton. 5. Adjusting screw portion of an " Ajustalynr " Trade onfiuirka invited. control-line handle. 6. Fuel filler. 7. Tank vent. American magazine*. One year " Model Airplane News'* 25/-. 8. E.D. Spinner nut. ” l*opulnr Mechanic* *’ 32/ " Deltngram ” i) Widen Ltd., (Dept. 1). 101, Fleet Streot, London. E.O.l. If you guessed eight correct you’re good, six, Earn ui> to £33 by Xmas milking lionnett Model Bungalow* nt and you are reasonably abreast of events, four, home. Wd «how you how and buy your work nt guaranteed rate*. 8.A.E. brings full detail*. Bennett Model», Richmond, Surrey. then you are average. Background to the title Plana and Kit* for over H00 Models. The now Modolcmft Hand is a four times enlargement of a piece of very book feature»· plan*, kit* and norexsorios. Price only 1 , inclndea a fill] refund voucher. Send for your copy now to Modelcmft Ltd.. smooth 1 /32nd balsa sheet! 77 (K) Oroeveuor Hood, London, 8.W .I. Λ General Service for the U oriel lletailer SIX POPULAR LINES AND A L L ON ONE ACCOUNT Then* is no longer any nerd for the Model Shop Retailer to add to his troubles by tiresome book keeping lit running an BRITFIX DOPES • MODELSPAN untidy mass of small accounts with manufacturers and suppliers & C E M E N T S all ov« r the country. We ran supply (he majority of his • SOLARBO BALSA genrro) requirements plus a num ber of specially selected " solo agencies " that am certain sellers. BINNACLE KITS • WAVEMASTER & Remember we are W HO LESALE only and therefore all our resources are devoted entirely to the requirements of the BATEMAN KITS SPRAYMASTER KITS retailer: Send for Trade List toil ay! ^AAHALIStTx liirul lif m ention AERO MODELLER ichrn replying to adrcrtiHers 768 December, 1953 s m a l l in size Tills Is the accumulator which model engineers have been wonting for year*. The Vcnuer silver- fine accumulator I» the TRUCUT Light IN WEIGHT lightest rechargeable ac AIRSCREWS cumulator In the world. Amp./hour efficiency it 5 6* 1 4 8* 9 & 10' I I · 12 13* 14* D IA . well over 90% IN ENERGY AND I « 1/» 1/10 5B/«H 58 3 5» 7i2 I I 3/® Write for leaflet V.A.006/4/A BIG PERFORMANCE for full information. J ' 3.4.S,4-I2‘ 4-12' 4-12' 4-12* 4-8' 4-8' 4" P IT C H each inc. P.T. EVEN NUMBERS ONLY VENNER OBTAIN FROM YOUR MODEL SHOP! ACCUMULATORS LTD. PROGRESS AERO WORKS. CHESTER ROAD, MACCLESFIELD KINGSTON BY-PASS, NEW MALDEN. SURREY. T.l, MALdon U i l THE ft>e /DEAL c/pf NEW for all HANDYMEN METAIT1X iw ’.vs SUPER Metals. wood, feather. plastics . . . powerful Metal fix will join them all, quickly. neatly. permanently. ADHESIVE Waterproof, heatproof, oc>d proof Metalfix combtnod Wolf Cub odheswe and cold solder con be sown, drilled, chisel- HOME CONSTRUCTOR EQUIPMENT fo r all led. planed, painted and polished. For the craftsman, for the /lobbyist, or the workshop. Metalfix really comprising accessories for d r il l in g , s a w in g . sticks to the job. SANDING. GRINDING, POLISHING. BUfflNG CRAFTSMEN from Timothy White A WOOD-TURNING Complete £ -|y *4*0 Two kinds: COLD SOLDER in tubes 1/3 Taylors, Mence Smith, in b o ttle s 1/9 Cub Individual Kits from £ 8 * 8 Ό Hobbies and all good Handicraft shops, etc In Drill Sold by oil good loot dealer». Write for folder TRANSPARENT in tubes I/- case of difficulty w rite to: £5· 19·6 "Profitable Pleature" MERCANTILE MARKETING CO. L T D . WOLF ELECTRIC TOOLS LTD. 22 GROSVENOR CRESCENT MEWS, S.W.I SLOanc 9895 PIONltR WORKS. HANGER LANE. LONDON, W. S this WHAT THEY SAY ABOUT. . . unique Trade Mark 1 method of BALSA WOOD From the Model From Modelthoppo, Shop Dudley: ·· We We it Brom. "How art very del^htcd with pleased 1 have been (he quality of the Bo Isa with the overall quality Wood delivered to our Wc quote three of Balia supplied. We order. and have plea· have received marry lure in enclosing fur· lettert from the n u m ero u s r e - compliments from .Saves Tim e, Νη»ι*κ Υ1οι»«·>. .Sativs Trouble* thcr order *' satisfied customers/9 (S*d. W. K. H. Foley.) ceivrd from satis* Tied customers. (Sgd. W. «etcher.) Trade Buyers overseas, let me be your buying agent. Wc export the best products of Britain's Model From O . L Newm an. W orthing, Su ssex: " May I take th*% opportunity of Aircraft Industry (under official licence) and can thanking you for your prompt despatch of the main order. and the excellent advise and recommend too. It mcani that the lines quality of the wood supplied. / have been complimented many times on you order from me are " balanced #* and complemen its tenerot quality(Sgd. D. 1. Newman.) tary to each other, which cuts out unnecessary dupli cation and avoids gaps in buying. It also brings everything to you on one account. Wc invite LOOK AT OUR PRICES / enquiries and place the whole of A rthur Mullett's 1/14'> 1/16· ... Id. each 3 'x 1/32* ...... 9d. each personal and long-specialised experience at your ι/ r x i b* ...... Id. J'xl/16* ...... 9d .. disposal. Send for lists. 3/16* X 3/16* ... 2d. .. 3' x 1/3* ...... 1/- .. 1/4'x 1/4'...... 2|d. .. 3 'x 3/16* ...... 1/2 .. # Specialist Export—Buying Service 3 8' · 3.8*...... 4d. .. 3*x l/4‘ ...... 1/3 .. # The Best British Kits, Engines, Accessories, Etc. 1/2' x 1/2'...... 6d. 3 'x 1/2* ...... l/IOj .. W L E N G T H S # Everything on One Account T R A D E N O T E # W e handle all Formalities Full discounts SEND NOW I for trade list a re allow ed from containing all usual sizes and abovo retail " Easy to Order " Order Form. P rices. ★ ARIHUR IWJlilll MINIKSCALE LIMITED BUYING AND EXPORT DEPT. CLIFTON STREET LIVERPOOL 19 mti<.;i!TOV s i s s k v . ι ;\<ητ .λ \ ι> H indh / m e n tio n Λ KitO.WOIlELLHIt trhen replying to advertisers you will need ... BRITFIX DOPES COLOUR RANGE G lossy. Deep Orange. Signal Red. Crimson. Sky Blue. Azure Blue. BRITFIX Brown. Dark Admiralty. Grey. Cream. Canary Yellow, Cmerald Green. Aluminium. Gold. Black CEMENT W hite. M a tt Camouflage Green. Camou flage Brown. Trainer Yellow. Duck DRIES FAST-SETS FIRM ASA ROCK E*S eiuc. Bed. Dark Grey. l i.iutparcnt' n»in and l**atpr $Α /αιάι$ύ fa m i/ou/ι & ca£ m odeo/kcp THE HUMBER OIL CO. LTD. (HOBBIES DEPT.) MARFLEET, HULL, ENGLAND ^ ^ * * * * * Solo Agencies available in several Overseas countries. Enquiries invited. ..ml pi.i.t.il 1!j t ,r ,1 llntiim. t.v \l.d.mt«-t. I'avm,.u< Λ Ν·«ν I ’d . I.oiulo·· and Mansion*·. (or the I'roprt**tors. Ihe Model Aeronaut:» .i| pr,..< | „j jm llarm d rT. Κ«ν<1, j H.r;- |’iib!»hi-il hv Γη* Argils Prcc'· III. t ilt Hopton y .rirt, I am don, S I ! 1. to wit* nil *11 tr.i.b · enquiries s !j > i !<| 1*. ;.a.|r. rv'd.' K the model builder’s finest gift! Engineered for Strength Designed for Beauty Tested for Flyability! BANDIT PHANTOM \ SICYSTREAK 26 44 span easy-to-build Does every stunt in the book cabin model. A fine flyer, 21 span C L trainer. A rugged featuring polyhedral wing for all balsa model that is very easy to fly stability 21'7 SLICKER MITE 32 span F F contes supreme. A winner diesels up to -75 c.c. LADYBIRD 42 span sem i-scale model featuring knock-off wings and rugged construction 21/7 Solve your gift problem by calling at your nearest hobby shop and inspecting the K.K. range of 100 kits —or buy the I9S4 K.K. Handbook and see and read about the entire range. The Handbook contains many useful articles too! Over 100 pages. Price I 3 Sole dittributoi Also distributors for ALLBON & D.C. Engines The Greatest Name in model kits JETEX Motors & Kits E.C.C. R C Equipment Manufactured by E. KEIL & CO. LTD. E.D. Engines ARC ELMIC Timers & D Ts. BRITFIX Cement, Dopes ELFIN Engines LONDON E.2 (Wholesale only) A M CO & S0LARB0 Hi ml li/ tnrnlion M JtO M O h! I.l.l.ll irhrn ir/tli/inf/ to ml rrrtiscrs