Letters to the Editor

510 GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE * Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep engines running peak performance longer * Satisfaction Guaranteed FREE SHIPPING ON ORDERS OVER $1500 SIG CHAMPION 2-STROKE FUEL PINTQUART GALLON 0% Nitrofll#than $995 5% Nitromethafle $365$525$1195 100/0 Nitronietht#* $416$560$1395 150/0 Nitromethane $430$835$1595 25% Nitrornethatte 1515$195$2095 350/0 Nitrometllane$595$925$2595 SIG PREMIUM 4-STROKE FUEL 100/0 Nitromethane $1325 150/0 Nitromethane $1525 THE CHOICE OF CHAMPION FLYERS over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best grade money can buy also use real 100% pure Nitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels con tain 50-50 blend Bakers purest AA Castor Oil new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge yourselfPrices sobiect change withOut notice See dealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 Ii SIG MANUFACTURING CO Montezuma IA 50171 mmUNUEEEEEEU U U U U EEU U al deBolts CL Bipes Thanks Dick Sarpolus Hal deBolts Classic CL Stunters May 1990 famous Bipe design got Hal deBolt business also got business first Control Line plane 1948 coverage airplane sure brought back fond memories Mine fire truck red powered OK 29 engine made Herkimer spark ignition mounted Burgess square battery center section upper wing taught myself fly resulting need lots repairs tough learn finally mastered went Super Ripe Fox 29 using Arden glow plug days spark ignition over later years two Stuntwagons never could duplicate fun Bipes still have plans around some place first Ripe Thanks good memories Robert E Ford Long Beach CA Gravity Hole regrettable dork Bill Spathias pretty Vagabond July Letters Editor obviously caused gravity hole Having lost models source myself am well aware heartache can cause unaware things gravity holes sort minimini earthly version astronomys fa mous black holes Although gravity holes well known causing cycles fall over golf balls curve lesser known effect cause models dramatically plunge earth ward crashfor no apparent reason Full-scale aircraft immune grav ity holes Such crashes often labeled occurring unknown causes Have ever seen someone walking across perfectly flat flying fieldand trip first glance really nothing trip over Closer thought suggest what really happened person tripped against edge gravity hole lighter builds model less effect gravity holes crash Continued page 8 6 Model Aviation et s o 4le ditor letters will ocrefully consIdered general Interest used Send Model AviatIon 1810 Samuel Morse Dii Reston VA 22090 ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE 4lt4 ELECTRIC CITABRIA great stand-way-ott scale fun ship designed 05/0 75 electric power take-offs aerobatics touch goes classic beauty yet enjoy docile slow flight easy landings Quick easy build kit includes pre cut fuselage sides tail feathers small parts step-by-step instructions complete rolled plans hardware threaded rods formed landing gear spruce spars shear webs 32 oz flying weight lightweight equipment 40 SPAN 275 SQ IN AREA FLAT BOTTOM WING 40 SPECIAL COMBO PRICE $5795 BASIC KIT $2995 Electro-Combo includes kit DSC 075 Hyper thrust motor fused switch harness Tamiya style connector propeller adaptor 8/4 fiberglass propeller YSTEMS ORPoRATION 675 Tower Lane West Chester PA 19380 215 430-8645 does take place strongly suggest great cau tion part fly near proven suspected gravity holes Doug Dahlke Oshkosh WI Taperwing Update published Taperwing con struction article January 1989 issue Model Aviation straight-away speeds AA Pylon Racers 80 90 mph range recent availability mod ern technology higher performance en gines ABC construction Schnuerle port ing etc such BY Shuriken Chinese CS very low-drag Taperwing will easily exceed 110 mph such speed G forces structural re quirements model yery different Because because Taperwing continues best /2A Pylon Racing designs available have have made structural improvements modified original plan accordingly Another modifi cation provides flat deck right behind engine tuned pipe muffler John Hunton Annandale VA issue MA Plans Service will supply ing modified version Taperwing plan instead original plan No 609 $600 Super Squire Credits stuff did excellent job Super Squire article July 1990 sue would like however provide proper credit color photography color photos taken Mr Mark Jo seph apologize omitting name submission Maybe could mention somewhere Larry Windingland Champaign IL Two dB Small friend out flying cas ually mentioned found new APC propellers 1 2 dB Continued page 10 8 Model Aviation N great companion very popular 40 Fly Baby 0 picture shows 1990 version Taperwing BV Shuriken installed testing should noted AMA 1990-1991 Pylon Racing rules al low engines ball bearings tuned pipe about time receipt WACO YMF /5 SCALEl/fl SCALE Wing Span72Wng Span60 Wing Area1530 sqWing Area960 sq Weight12l3IbsWeight8Ibs Engine75-90 2CEngine61 2c 90 4c Receive FREE cockpit kit PICA standoff scale model purchased between September 1 1990 November 30 1990 sending proof-of-purchase PICA postmarked no later December 31 1990 Proof-of-purchase end label kit box original bill sale will no exceptions dates offer bill sale must clearly show dealers name address No copies bill sale will accepted Void prohibited law coupon must accompany request NAME _____________________________________ ______________ ADDRESS _________________________________________________ PICA ENTERPRISES INC 02657 NE 188th STREET IFLORIDA 33180 935-1436 CARBON FIBER LAMINATES 007 014 022 & 030 Thick N1ROHACELL Light Rigid Foam 1 2and 3mm GLASS CLOTH 58 ozIsq yd 7515 20 30 & 4 oz CARBON OR KEVIAR MAT 2 4 5 oz/sq yd CARBON FIBER NO FRAY TAPE CARBON FIBER RIBBON KEYLAR FABRIC TAPE KEVLAR FABRIC 17 oz/sq yd E-Z LAM Epoxy Laminating Resin Send SASE complete listing products AEROSPACE Composite Products 90-1 2 4c / CONTACT YOUR LOCAL DEALERMADE IN THE USA [v32][b-1-10-1-10]] MAFREE COCKPIT KIT __________________________________ MODEL _____________ _______________________________________SCALE SIZE ____________ CITY STATE ZIP lower conventional wooden props friend said Well small difference t49Y-3//LV RADIO CONTROL SNORT KIT sound go trouble change propsAMERICAN P40 Tomahawk think us dont realize much difference 2 dB makes soundlevel sound 2 dB intense another sound 16 times louder first sound Im sure Model Aviation has published information before case people missed should aware- ~ small dB number change makes big 25 TO 45 ENGINES difference Ernest TillmanWING SPAN 55 Corpus Chrtssti TXFLIES LIKE DREAM WITH PLENTY OF WING AND TAIL AREA FOR FULL-RANGE POSITIVE CONTROL DESIGNED WITH FOAM WING AND BOX FRAME FUSELAGE FOR SIMPLE AND STURDY Could WeCONSTRUCTION WE FURNISH THE ESSENTIAL PARTS ALONG WITH EASY-TO-FOLLOW PLANS AND LET THE BUILDER SELECT No disrespect meant John OldenkampHIS OWN WOOD AND ADDITIONAL HARDWARE could leave out name JimSHORT KIT INCLUDES PRECISION CUT ARCOFOAM WING CORES Cahill list Wakefield Luminaries ABS HIGH-IMPACT COWLING construction article BoomBox FORMED WING GUN PORTS AND EXHAUST July 1990 issue Jim won Wakefield con- CRYSTAL CLEAR CANOPY WITH FRAMEWORK test France 1938 ad- PLYWOOD FIREWALL LANDING GEAR STRAPS BLOCKS AND SCREWS vanced model its time Clodhopper FORMED STEEL ENGINE MOUNT streamlined beauty first CONTROL SURFACE HINGES folding prop can remember seeingCLEAR PLANS WITH CONSTRUCTION DETAILS AND ALL NECESSARY TEMPLATES Lately have seen Cahills model re- BILL OF MATERIALS NO BALSA INCLUDED ferred Cloudhopper called ORDERING SEND CK OR MONEY ORDER FOR $3750 Clodhopper very good reason wasPLUS $475 POSTAGE CANADIANS ADD $750 TO ______________________________________ powerful climber once up WING Mfg. 306 SImmons Galssburg IL 61401 IL RES ADD 7% SALES TAX ALL ORDERS UNDS PO Box 16621 Irvine CA 92714 714 250-1107and one-bladed prop folded rarelySEND $400 FOR PRODUCT CATALOG DESCRIBING OUR came down until won contest inCOMPLETE LINE OF FOAM CORE REPLACEMENT WINGS enteredACCESSORIES KITS TOOLS AND MUCH MORE Continued page 127V7Z 10 Model Aviation Source Lightweight Materials Build Strong Light ACPs Advanced Lightweight Materials WE ARE SHOOTING DOWN NIGH BALSA PRICES WITH SUPER QUALITTI CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% Satisfaction Guaranteed Direct Only SAL Si SHUTS 36 451 30 1/16x233 3/32o240 1/8o243 3/16x249 1/4x256 1/32o337 1/20x337 1/16x3374831 3132x3445837 1/9x3557445 3/16x3638455 114x3759861 5116x387115 3/8x39012871 1/2x3114160 314x3170200 1/16x4587648 3/32o4729756 1/8x48210966 3/16x49612675 114x411513984 3/8o4170235144 1/2x4235273200 BATCHEDSHEETS42 3324 00 184 08 3164 0 144 131 BALM STICKS 3545 1/16x1/410 1/16o3/811 1/16x1/215 3/32x1/412 3/32x31813 3/32x11217 1/So1/809 1/So1/41218 1/8x3/81319 1/So1/21824 3/16x3/161219 3/16x3/81821 3/16o1/22231 1/401/41826 1/4o3/82128 1/4o1/22232 114o3/43445 1/4x14257 5/iSo5/162330 3/So3/82939 3/So1/233A9 3/So3/44458 3/So15473 1/2x1/23855 1/2x3/44866 1/2o16082 5/So5/85270 3/403/47598 BALSA HOT LINE Cal1 SOS 7458394 lOam -8pm Central ru w BALSA TRIANILES N 141425 38 3830 12135 34 I.55 BALSA PLANKSN lol90 12157 1o3219 14293 11/23302 11/24396 22231 23336 24476 33516 384718 TAPERED SHEETS34 1/4265 14386 39268 38396 123120 LONE STAN [PONT SozL/st 999 5mm600 15mm600 30 rn/n 600 serious modeler want performance LIGHT 4-8 LB WOOD36 1/32362 1/20362 1/16383 3/32374 14391 31163195 1/43126 343160 1123196 3143300 13425 1/19496 31324119 144135 31164157 1144196 344296 1/24396 TUBILINS EDGE 36 1/4132 516 I1/439 3811/46 1/2270 STANIOLUE 1 02 Th/ck300 1 oz Th/n300 2oz Thick550 2oz Th/n560 must try 4-6 lb balsa * NEW * Hundreds new sizes accessories finishing materials Send #10 SASE latest catalog SPRUCE STICKS 36 45 1/8 1417 25 1/8 1/4 1/6 3/8 3/16 3/16 1/4 114 1/4 3/9 114 1/2 3434 3/6 1/2 1/2 1/2 1/2 0 3/4 20 26 2232 26 38 3450 4055 4555 4969 6077 6688 75 97 SPRUCE TRiANGLES 3434 1/2 1/2 3/4 3/4 BASSWOOD45 3/163/16 /161/430 3/163439 3/161/246 3/163/460 1/4w 1/4 42 1/43/649 1/43/490 3/63/860 341/270 3/903/490 1/21/290 l23/4100 BUNDLEDEALS 201/1 6o3o36699 20-1/16o4x361035 20-3/32o3x36875 1 5-3/32x4x36955 15-1/8x3x36750 10-1 /6o4o36695 15-3/1 6x3x36940 10-3/16o4x36835 10-1 /4x3x36665 10-1/4x4o361060 1 0-3/8o3x36890 5-3/6o4x36655 5-1 /2x3x36540 5-1/2o4x361110 1 0-3/32o4x48886 5-1 /8o4x48500 5-3/1 6o4o48600 5-1 /4o4o48645 HARD MAPLE Id 3/6 3/6 3/634 1234 9IRCH DOWEL S 18 316 14 516 3/9 RB. 40 46 60 58 68 36 09 25 32 8PLVUA3CN 1/64x12635 1139x12476 1116x12475 118x12496 S PS Y3ICNW 3139x12700 110x12775 ii3/16x12525 l/4x12626 64310x12725 81112x12900 LflIPLYSSOOVEDL6 MOUNTS 1/SoS17512b6888 1/8x123503/5x3/411/8lis 114x62753/8o3/415/32lis 1I4x128501/2o3/413/16l50 LONE STAR MODELS Cont4B Handling Charge pay PUS Add $350 COD $400 extra PP APO FPO 123 5711 St Lubbock TX 79412 States WaaccaptVISA MasoaiCard personal checks coo 6%% tax Texas us currency Mm wood order *1000 1A IRADIAL ENGINE TECHNOLOGIES INC THE MIKE GR6 120 2-CYCLE SEND 51500 VHS TAPE $100 TECHNICAL DATA 7 Greenwood Lane Valhalla NY 10595 saw Jim hand glide Hopper several times distance went just little toss unbelievable also won Mof fett contest 1937 way refer anyone might interested Wakefield design way ahead its time Frank Zaics 1938 Model Aero nautics Yearbook page 88 Ivan Kelley Canyon Country CA Are Mufflers Re AA CL model article July 1990 issue Shuriken Streak ballyhoo modern high-tech stuff fflers Isnt body making real hardware make painfully high-pitched whiners quiet love 1AA world very much have loved nearly 40 years noise just unacceptable twocycle engine size Please manufacturers designers probably greatest-size market out something quiet en gines other l glad test em Richard Ranney Hermosa Beach CA Building Kids would like tell much en joyed Dave Haughts article Building Continued page 188 Premiere Issue N SALE NOW AVJJTION Magazine Presents New Exciting Chapters History Military Civil Aviation $295 Bookstores & Newsstands Nationwide subscribe call 1-800-238-1199 1 year 6 issues $1495 12 Model Aviation k\~ \ TOP GUN RADIAL SCALE LOOKS & SOUND IDEAL FOR 1/5-1/4 scale 30 HP16 LBS THRUST Leader small Airfoil Technology MASI Eli AIRSC1IEW FOUR NEW SIZES 11 x 9 10 x 8 9x8 9x5 Reinforcing trend higher pitches quieter operation Master Airscrew GIF Series now includes sizes 11x9 10x8 9x8 9x5 stronger new 20 engines GIF K Series propellers made tough glassfilled nylon unmatched strength durabil ity Now 38 sizes wide range pitches flying application Available Hobby Dealer WINDSOR PROPELLER CO 3219 Monier Circle Pancho Cordova CA 95742 GUNFIGHTERS * POSITIVE FEEL * USED BY TOP PILOTS Rally/Homer Continued page 184 along staffers Chip Smith Bob Under wood Bill Baker help ensure smooth event Its too early AMA have completed its evaluations 1990 National Rally what its worth mans opin ion Id like see AMA fine-tune im prove expand upon concept would done bringing events mainstream hobby bringing exhibitions directly general public Hundreds modelers benefited Houston rally uncounted legions spectators satisfied curiosity about hobby knows converts made Letters Editor Continued page 12 Kids June 1990 issue fu ture hobby lies interest youngsters Daves writing shows lot thought insight helping appre ciate modeling Model Aviation best balanced mag azine its class has good quality writ ing variety interests does allow advertising swamp articles Please keep up good work Bruce Mickelson Campbell CA Adventures Scale Modeling ed ucational entertaining public television series seen 180 markets across US teaches viewers model building tech niques how-to program also intro duces basic design concepts delves history real-life prototypes featured model episode includes two how-to segments museum work shop lively knowledgeable host Mike Lech plus on-location visit ex pert guest draws connections between model build studio its fullCA RES ADD 625% SALES TAX size prototype Adventures Scale Modeling now shooting Season IV going on-location around US Canada Europe studio how-to segments will taped Sep tember 15-October 5 WSWP-TV Beck ley WV new season should on-theair over US January 1991 Anyone desiring further information about Adventures Scale Modeling should contact his/her local PBS station write call Adventures Scale Model ing WSWP-TV Box AH Beckley WV 25802 John C Baumann Associate Producer Beckley WV picture shows Mike Lech host Adventures Scale Modeling visited National Aviation Museum Ot tawa Canada learned about rich heritage Canadian aviation shown AISM program No 307 Duxford/Berliner Continued page 97 Spitfires complete other being restored Duxford has five air planes altogether Hawker Hurricane al fully restored looking great Focke-Wulf FW- 190 appeared need little other paint job ready fly Parked outside far some large self-propelled field guns Fairey Gan nett turboprop anti-sub patrol plane its wings double-folded Double Hangar Number first original hangars bit slim aircraft displays An entire side devoted tanks Tlireball R/C Idle-Bar Glow Plugs Long Short Also.Only $189 Traditional line non-idle bar Glow Plugs Six Types 3 Heat Ranges High Performance Glow Element Blow Proof Seal Only $149 Swanson Associates PO Box 151 Wayne NJ ce 7948 07470 188 Model Aviation Public TV * FOR FUTABA AIRTRONICS JR OTHERS PLEASE SPECIFY RADIO

510 GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE * Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep engines running peak performance longer * Satisfaction Guaranteed FREE SHIPPING ON ORDERS OVER $1500 SIG CHAMPION 2-STROKE FUEL PINTQUART GALLON 0% Nitrofll#than $995 5% Nitromethafle $365$525$1195 100/0 Nitronietht#* $416$560$1395 150/0 Nitromethane $430$835$1595 25% Nitrornethatte 1515$195$2095 350/0 Nitrometllane$595$925$2595 SIG PREMIUM 4-STROKE FUEL 100/0 Nitromethane $1325 150/0 Nitromethane $1525 THE CHOICE OF CHAMPION FLYERS over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best grade money can buy also use real 100% pure Nitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels con tain 50-50 blend Bakers purest AA Castor Oil new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge yourselfPrices sobiect change withOut notice See dealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 Ii SIG MANUFACTURING CO Montezuma IA 50171 mmUNUEEEEEEU U U U U EEU U al deBolts CL Bipes Thanks Dick Sarpolus Hal deBolts Classic CL Stunters May 1990 famous Bipe design got Hal deBolt business also got business first Control Line plane 1948 coverage airplane sure brought back fond memories Mine fire truck red powered OK 29 engine made Herkimer spark ignition mounted Burgess square battery center section upper wing taught myself fly resulting need lots repairs tough learn finally mastered went Super Ripe Fox 29 using Arden glow plug days spark ignition over later years two Stuntwagons never could duplicate fun Bipes still have plans around some place first Ripe Thanks good memories Robert E Ford Long Beach CA Gravity Hole regrettable dork Bill Spathias pretty Vagabond July Letters Editor obviously caused gravity hole Having lost models source myself am well aware heartache can cause unaware things gravity holes sort minimini earthly version astronomys fa mous black holes Although gravity holes well known causing cycles fall over golf balls curve lesser known effect cause models dramatically plunge earth ward crashfor no apparent reason Full-scale aircraft immune grav ity holes Such crashes often labeled occurring unknown causes Have ever seen someone walking across perfectly flat flying fieldand trip first glance really nothing trip over Closer thought suggest what really happened person tripped against edge gravity hole lighter builds model less effect gravity holes crash Continued page 8 6 Model Aviation et s o 4le ditor letters will ocrefully consIdered general Interest used Send Model AviatIon 1810 Samuel Morse Dii Reston VA 22090 ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE 4lt4 ELECTRIC CITABRIA great stand-way-ott scale fun ship designed 05/0 75 electric power take-offs aerobatics touch goes classic beauty yet enjoy docile slow flight easy landings Quick easy build kit includes pre cut fuselage sides tail feathers small parts step-by-step instructions complete rolled plans hardware threaded rods formed landing gear spruce spars shear webs 32 oz flying weight lightweight equipment 40 SPAN 275 SQ IN AREA FLAT BOTTOM WING 40 SPECIAL COMBO PRICE $5795 BASIC KIT $2995 Electro-Combo includes kit DSC 075 Hyper thrust motor fused switch harness Tamiya style connector propeller adaptor 8/4 fiberglass propeller YSTEMS ORPoRATION 675 Tower Lane West Chester PA 19380 215 430-8645 does take place strongly suggest great cau tion part fly near proven suspected gravity holes Doug Dahlke Oshkosh WI Taperwing Update published Taperwing con struction article January 1989 issue Model Aviation straight-away speeds AA Pylon Racers 80 90 mph range recent availability mod ern technology higher performance en gines ABC construction Schnuerle port ing etc such BY Shuriken Chinese CS very low-drag Taperwing will easily exceed 110 mph such speed G forces structural re quirements model yery different Because because Taperwing continues best /2A Pylon Racing designs available have have made structural improvements modified original plan accordingly Another modifi cation provides flat deck right behind engine tuned pipe muffler John Hunton Annandale VA issue MA Plans Service will supply ing modified version Taperwing plan instead original plan No 609 $600 Super Squire Credits stuff did excellent job Super Squire article July 1990 sue would like however provide proper credit color photography color photos taken Mr Mark Jo seph apologize omitting name submission Maybe could mention somewhere Larry Windingland Champaign IL Two dB Small friend out flying cas ually mentioned found new APC propellers 1 2 dB Continued page 10 8 Model Aviation N great companion very popular 40 Fly Baby 0 picture shows 1990 version Taperwing BV Shuriken installed testing should noted AMA 1990-1991 Pylon Racing rules al low engines ball bearings tuned pipe about time receipt WACO YMF /5 SCALEl/fl SCALE Wing Span72Wng Span60 Wing Area1530 sqWing Area960 sq Weight12l3IbsWeight8Ibs Engine75-90 2CEngine61 2c 90 4c Receive FREE cockpit kit PICA standoff scale model purchased between September 1 1990 November 30 1990 sending proof-of-purchase PICA postmarked no later December 31 1990 Proof-of-purchase end label kit box original bill sale will no exceptions dates offer bill sale must clearly show dealers name address No copies bill sale will accepted Void prohibited law coupon must accompany request NAME _____________________________________ ______________ ADDRESS _________________________________________________ PICA ENTERPRISES INC 02657 NE 188th STREET IFLORIDA 33180 935-1436 CARBON FIBER LAMINATES 007 014 022 & 030 Thick N1ROHACELL Light Rigid Foam 1 2and 3mm GLASS CLOTH 58 ozIsq yd 7515 20 30 & 4 oz CARBON OR KEVIAR MAT 2 4 5 oz/sq yd CARBON FIBER NO FRAY TAPE CARBON FIBER RIBBON KEYLAR FABRIC TAPE KEVLAR FABRIC 17 oz/sq yd E-Z LAM Epoxy Laminating Resin Send SASE complete listing products AEROSPACE Composite Products 90-1 2 4c / CONTACT YOUR LOCAL DEALERMADE IN THE USA [v32][b-1-10-1-10]] MAFREE COCKPIT KIT __________________________________ MODEL _____________ _______________________________________SCALE SIZE ____________ CITY STATE ZIP lower conventional wooden props friend said Well small difference t49Y-3//LV RADIO CONTROL SNORT KIT sound go trouble change propsAMERICAN P40 Tomahawk think us dont realize much difference 2 dB makes soundlevel sound 2 dB intense another sound 16 times louder first sound Im sure Model Aviation has published information before case people missed should aware- ~ small dB number change makes big 25 TO 45 ENGINES difference Ernest TillmanWING SPAN 55 Corpus Chrtssti TXFLIES LIKE DREAM WITH PLENTY OF WING AND TAIL AREA FOR FULL-RANGE POSITIVE CONTROL DESIGNED WITH FOAM WING AND BOX FRAME FUSELAGE FOR SIMPLE AND STURDY Could WeCONSTRUCTION WE FURNISH THE ESSENTIAL PARTS ALONG WITH EASY-TO-FOLLOW PLANS AND LET THE BUILDER SELECT No disrespect meant John OldenkampHIS OWN WOOD AND ADDITIONAL HARDWARE could leave out name JimSHORT KIT INCLUDES PRECISION CUT ARCOFOAM WING CORES Cahill list Wakefield Luminaries ABS HIGH-IMPACT COWLING construction article BoomBox FORMED WING GUN PORTS AND EXHAUST July 1990 issue Jim won Wakefield con- CRYSTAL CLEAR CANOPY WITH FRAMEWORK test France 1938 ad- PLYWOOD FIREWALL LANDING GEAR STRAPS BLOCKS AND SCREWS vanced model its time Clodhopper FORMED STEEL ENGINE MOUNT streamlined beauty first CONTROL SURFACE HINGES folding prop can remember seeingCLEAR PLANS WITH CONSTRUCTION DETAILS AND ALL NECESSARY TEMPLATES Lately have seen Cahills model re- BILL OF MATERIALS NO BALSA INCLUDED ferred Cloudhopper called ORDERING SEND CK OR MONEY ORDER FOR $3750 Clodhopper very good reason wasPLUS $475 POSTAGE CANADIANS ADD $750 TO ______________________________________ powerful climber once up WING Mfg. 306 SImmons Galssburg IL 61401 IL RES ADD 7% SALES TAX ALL ORDERS UNDS PO Box 16621 Irvine CA 92714 714 250-1107and one-bladed prop folded rarelySEND $400 FOR PRODUCT CATALOG DESCRIBING OUR came down until won contest inCOMPLETE LINE OF FOAM CORE REPLACEMENT WINGS enteredACCESSORIES KITS TOOLS AND MUCH MORE Continued page 127V7Z 10 Model Aviation Source Lightweight Materials Build Strong Light ACPs Advanced Lightweight Materials WE ARE SHOOTING DOWN NIGH BALSA PRICES WITH SUPER QUALITTI CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% Satisfaction Guaranteed Direct Only SAL Si SHUTS 36 451 30 1/16x233 3/32o240 1/8o243 3/16x249 1/4x256 1/32o337 1/20x337 1/16x3374831 3132x3445837 1/9x3557445 3/16x3638455 114x3759861 5116x387115 3/8x39012871 1/2x3114160 314x3170200 1/16x4587648 3/32o4729756 1/8x48210966 3/16x49612675 114x411513984 3/8o4170235144 1/2x4235273200 BATCHEDSHEETS42 3324 00 184 08 3164 0 144 131 BALM STICKS 3545 1/16x1/410 1/16o3/811 1/16x1/215 3/32x1/412 3/32x31813 3/32x11217 1/So1/809 1/So1/41218 1/8x3/81319 1/So1/21824 3/16x3/161219 3/16x3/81821 3/16o1/22231 1/401/41826 1/4o3/82128 1/4o1/22232 114o3/43445 1/4x14257 5/iSo5/162330 3/So3/82939 3/So1/233A9 3/So3/44458 3/So15473 1/2x1/23855 1/2x3/44866 1/2o16082 5/So5/85270 3/403/47598 BALSA HOT LINE Cal1 SOS 7458394 lOam -8pm Central ru w BALSA TRIANILES N 141425 38 3830 12135 34 I.55 BALSA PLANKSN lol90 12157 1o3219 14293 11/23302 11/24396 22231 23336 24476 33516 384718 TAPERED SHEETS34 1/4265 14386 39268 38396 123120 LONE STAN [PONT SozL/st 999 5mm600 15mm600 30 rn/n 600 serious modeler want performance LIGHT 4-8 LB WOOD36 1/32362 1/20362 1/16383 3/32374 14391 31163195 1/43126 343160 1123196 3143300 13425 1/19496 31324119 144135 31164157 1144196 344296 1/24396 TUBILINS EDGE 36 1/4132 516 I1/439 3811/46 1/2270 STANIOLUE 1 02 Th/ck300 1 oz Th/n300 2oz Thick550 2oz Th/n560 must try 4-6 lb balsa * NEW * Hundreds new sizes accessories finishing materials Send #10 SASE latest catalog SPRUCE STICKS 36 45 1/8 1417 25 1/8 1/4 1/6 3/8 3/16 3/16 1/4 114 1/4 3/9 114 1/2 3434 3/6 1/2 1/2 1/2 1/2 0 3/4 20 26 2232 26 38 3450 4055 4555 4969 6077 6688 75 97 SPRUCE TRiANGLES 3434 1/2 1/2 3/4 3/4 BASSWOOD45 3/163/16 /161/430 3/163439 3/161/246 3/163/460 1/4w 1/4 42 1/43/649 1/43/490 3/63/860 341/270 3/903/490 1/21/290 l23/4100 BUNDLEDEALS 201/1 6o3o36699 20-1/16o4x361035 20-3/32o3x36875 1 5-3/32x4x36955 15-1/8x3x36750 10-1 /6o4o36695 15-3/1 6x3x36940 10-3/16o4x36835 10-1 /4x3x36665 10-1/4x4o361060 1 0-3/8o3x36890 5-3/6o4x36655 5-1 /2x3x36540 5-1/2o4x361110 1 0-3/32o4x48886 5-1 /8o4x48500 5-3/1 6o4o48600 5-1 /4o4o48645 HARD MAPLE Id 3/6 3/6 3/634 1234 9IRCH DOWEL S 18 316 14 516 3/9 RB. 40 46 60 58 68 36 09 25 32 8PLVUA3CN 1/64x12635 1139x12476 1116x12475 118x12496 S PS Y3ICNW 3139x12700 110x12775 ii3/16x12525 l/4x12626 64310x12725 81112x12900 LflIPLYSSOOVEDL6 MOUNTS 1/SoS17512b6888 1/8x123503/5x3/411/8lis 114x62753/8o3/415/32lis 1I4x128501/2o3/413/16l50 LONE STAR MODELS Cont4B Handling Charge pay PUS Add $350 COD $400 extra PP APO FPO 123 5711 St Lubbock TX 79412 States WaaccaptVISA MasoaiCard personal checks coo 6%% tax Texas us currency Mm wood order *1000 1A IRADIAL ENGINE TECHNOLOGIES INC THE MIKE GR6 120 2-CYCLE SEND 51500 VHS TAPE $100 TECHNICAL DATA 7 Greenwood Lane Valhalla NY 10595 saw Jim hand glide Hopper several times distance went just little toss unbelievable also won Mof fett contest 1937 way refer anyone might interested Wakefield design way ahead its time Frank Zaics 1938 Model Aero nautics Yearbook page 88 Ivan Kelley Canyon Country CA Are Mufflers Re AA CL model article July 1990 issue Shuriken Streak ballyhoo modern high-tech stuff fflers Isnt body making real hardware make painfully high-pitched whiners quiet love 1AA world very much have loved nearly 40 years noise just unacceptable twocycle engine size Please manufacturers designers probably greatest-size market out something quiet en gines other l glad test em Richard Ranney Hermosa Beach CA Building Kids would like tell much en joyed Dave Haughts article Building Continued page 188 Premiere Issue N SALE NOW AVJJTION Magazine Presents New Exciting Chapters History Military Civil Aviation $295 Bookstores & Newsstands Nationwide subscribe call 1-800-238-1199 1 year 6 issues $1495 12 Model Aviation k\~ \ TOP GUN RADIAL SCALE LOOKS & SOUND IDEAL FOR 1/5-1/4 scale 30 HP16 LBS THRUST Leader small Airfoil Technology MASI Eli AIRSC1IEW FOUR NEW SIZES 11 x 9 10 x 8 9x8 9x5 Reinforcing trend higher pitches quieter operation Master Airscrew GIF Series now includes sizes 11x9 10x8 9x8 9x5 stronger new 20 engines GIF K Series propellers made tough glassfilled nylon unmatched strength durabil ity Now 38 sizes wide range pitches flying application Available Hobby Dealer WINDSOR PROPELLER CO 3219 Monier Circle Pancho Cordova CA 95742 GUNFIGHTERS * POSITIVE FEEL * USED BY TOP PILOTS Rally/Homer Continued page 184 along staffers Chip Smith Bob Under wood Bill Baker help ensure smooth event Its too early AMA have completed its evaluations 1990 National Rally what its worth mans opin ion Id like see AMA fine-tune im prove expand upon concept would done bringing events mainstream hobby bringing exhibitions directly general public Hundreds modelers benefited Houston rally uncounted legions spectators satisfied curiosity about hobby knows converts made Letters Editor Continued page 12 Kids June 1990 issue fu ture hobby lies interest youngsters Daves writing shows lot thought insight helping appre ciate modeling Model Aviation best balanced mag azine its class has good quality writ ing variety interests does allow advertising swamp articles Please keep up good work Bruce Mickelson Campbell CA Adventures Scale Modeling ed ucational entertaining public television series seen 180 markets across US teaches viewers model building tech niques how-to program also intro duces basic design concepts delves history real-life prototypes featured model episode includes two how-to segments museum work shop lively knowledgeable host Mike Lech plus on-location visit ex pert guest draws connections between model build studio its fullCA RES ADD 625% SALES TAX size prototype Adventures Scale Modeling now shooting Season IV going on-location around US Canada Europe studio how-to segments will taped Sep tember 15-October 5 WSWP-TV Beck ley WV new season should on-theair over US January 1991 Anyone desiring further information about Adventures Scale Modeling should contact his/her local PBS station write call Adventures Scale Model ing WSWP-TV Box AH Beckley WV 25802 John C Baumann Associate Producer Beckley WV picture shows Mike Lech host Adventures Scale Modeling visited National Aviation Museum Ot tawa Canada learned about rich heritage Canadian aviation shown AISM program No 307 Duxford/Berliner Continued page 97 Spitfires complete other being restored Duxford has five air planes altogether Hawker Hurricane al fully restored looking great Focke-Wulf FW- 190 appeared need little other paint job ready fly Parked outside far some large self-propelled field guns Fairey Gan nett turboprop anti-sub patrol plane its wings double-folded Double Hangar Number first original hangars bit slim aircraft displays An entire side devoted tanks Tlireball R/C Idle-Bar Glow Plugs Long Short Also.Only $189 Traditional line non-idle bar Glow Plugs Six Types 3 Heat Ranges High Performance Glow Element Blow Proof Seal Only $149 Swanson Associates PO Box 151 Wayne NJ ce 7948 07470 188 Model Aviation Public TV * FOR FUTABA AIRTRONICS JR OTHERS PLEASE SPECIFY RADIO