Letters to the Editor

Do away wasted tie straps isolate tuned pipe HUSH-CLAMP perfect compliment soft mounted engine Easy use HUSH-CLAMP 60$475 HUSH-CLAMP 40$475 HUSH-CLAMP LITE* 60 ..$375 HUSH-CLAMP LITE* 40 ..$375 *LITE replaces bushing nylon bolt Remember nothing damps like VIBRA-DAMP engine mounts Available better Hobby Dealers order direct add $150 shipping PERFORMANCE PRODUCTS UNLIMITED 7093 E Dodge Rd Mt Moms Mi 48458 Phone Orders 313 631-4894 Visa/MC accept As new member AMA number 347736 enjoy Model Aviation very much read cover cover although sometimes takes week two article Behind Scenes ledo August 1990 issue excel lent page 80 picture K Leroy Irvis Herb Wahi incorrectly la beled Mr Irvis gentleman right left caption states Mr Irvis well known Pittsburgh area both legislative activities air plane modeling field local modelers fly named K Leroy Irvis RC Model Airport Thanks efforts staff publishing best magazine field model aircraft H Glenn Benton Pittsburgh PA wondered about mistake day received advance copies Au gust issue pictures art boards came back printer swer clear MAs printer inadver tently flopped screened negative picture combined type pageand failed catch er ror checking printers proof . And en Preceding Page August issue Model Aviation mag azine arrived yesterday As always began reading immediately got page 79 surprised flattered found picture airplane right up top page read caption below picture said airplane called Airtrax created someone named Bob Ray Ohio airplane really named Enforcerus designed built picture taken first day show last day Enforcerus awarded first place MonoKote di vision second place Sport Power Enforcerus Saito 90 twin swinging 14 x 8 Zinger pusher pro peller uses Spring Air retracts has onboard glow igniter keep fourContinued page 8 6 Model Aviation BURN HOLES IN THE SKY LANIER RCu REBEL CAT NO 78129 GREAT FLYING RIPE THAT IS CAPABLE OF ANY MANEUVER YOUVE GOT THE GUTS TO DOI Fuselage Length 35Wing Span 50 Rec Engine Size 45-60 4 Stroke 60-80Area 700 sq Flying Weight 6V-7 lbsRadio Channels 4 Available favorite hobby dealerRepiacement parts avaliabie Deaier distributor inquiries Invited Write today free color catalog PO Box 458Oakwood Georgia 30566404-532-6401 Made USA ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE Davey Systems 3 REAT SPORT-SCALE IPES Designed 40-60 two-cycle 60-90 four-cycle engines 40-size electric motors three feature box type construction extensive prefabrication quick assembly Also included full size plans step-by-step instruc tions hardware preformed bolt-on landing gear bolt-on wings prepackaged small parts STAMPE 5V4 famous French aeroba tic primary trainer Preformed welded wire wing cabane vacuum formed cowl 56 span 1000 sq area 6 7 lb flying weight GREAT LAKES SPECIAL beautiful rendition classic aerobatic biplane preformed wire cabane struts vacuum formed cowl wheel pants precut tail feathers 53 top 48 bottom wing 798 sq area 6 6 lb flying weight STEARMAN 75 PT-17/N2S-3 gorgeous copy famous trainer crop sprayer aerobatic show stopper Preformed wire cabane struts precut tail feathers 51 top 48 bottom wings 750 sq area 6 61/2 lb flying weight IAVEY675 TOWER LANE YSTEMSWESTCHESTER PA 19380 oRPORATIoN 215-430-8645 stroker dependable low end StrobeF-Light strobes installed Truster Motors wings whole thing under control five-channel Futaba PCM system has solar-powered back-lighted radar screen instrument panel Faye L Stilley Wilton CT Summer Day Camp Medeling Seven Lakes Aeromodelers RC Club West End NC conducting model build ing program boys girls enrolled Seven Lakes Landowners Association Day Camp first three classes held June 28 1990 11 boys girls constructed AMA Delta Darts Follow ing two-hour building session youngster thrill successfully launching rubber-powered airplane out doors As readers probably know model aircraft construction flying exciting activity youngsters does occupy minds children use ful way specifically helps prob lem solving creativity manual skills see joy faces youngsters self-created craft fly grace Continued page 10 8 Model Aviation Ive enclosed snapshot full-scale aircraft taken friend last shuttle flight Thanks always interesting usu ally accurate magazine 28 KITS TO CHOOSE FROM F 1/5 SCALE Wing Span72 Wing Area 1530 sq Weight12-l3Ibs Engine75-90 2c 90-12 4c / CONTACT YOUR LOCAL DEALER MA WACO YMF 1/6 SCALE Wing Span60 Wing Area960 sq WeightBibs Engine61 2c 90 4c MADE IN THE USA Receive FREE cockpit kit PICA standoff scale model purchased between September 1 1990 November 301990 sending proof-of-purchase PICA postmarked no later December31 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 MODEL 5CALE SIZE ____________ CITY STATE ZIP PICA ENTERPRISES INC NE 188th STREET MIAMIFLORIDA 33180 305 935-1436 APPLIED DESIGN CORPORATION PO Box 3384 Torrance CA 90510 MINI ER ADJUSTABLE TENSION HAND BELT SANDER FIRMLY HOLDS PAPER FOR EASIER SANDING Padded flats calve Handy Held Easyl Use $275 MINI-STRIPSPRECISION DIECUT Medium Garnet SAVES TIMEREPLACEMENTFine Garnet AND EFFORT $1 75SANDING BELTSAseld Water Preet TEE i ALUMINUM EXTRUSION SANDING BLOCK ler ene wh RUFF-STUFF Selt-edheelee sand paper Large Tnae Settee Wee tWearOat 11 ecu $300 Handyte Use flinch $450 RUFF 6 STUFF SELF ADHESIVE SHEET SANDPAPER MAKE YOUR OWN SPECIAL SANDING SHAPES Easy Ia Use Ne messy glee er dryIng tune $115 Medium Flee r Flee MINbsAw $850 COMPACT 10 insh HACK SAW SAWS ANYTHING ANYWHERE Saw han rugged diecast train wIth eantntabte chlp-preet plastIc 541 hendle RecedIng see ad pastable 6 blade glue gad werk access Cats weed plastIc metal HARDENED MUSIC WIREextra blsdes-31S205 beauty something behold Modeling wholesome rewarding challenging hobby young people can pursued enjoyed through entire lives Raymond H Barnes West End NC No Finer People Around am new RC flying flew Control Line younger enjoyed very much Now Ive flying RC about month isnt anything bet ter first RC plane Astro Flight Mini-Challenger crashed beyond re pair built Bob Martin Pussy Cat cut down wingspan 60 mounted power pod could fly AMA 702 RC Duration contest Baton Rouge May 27 didnt place con test great time met some real nice people flights forgot turn receiver dumb away went best engine run time too plane flew about half mile away started chasing wife some friends Beaumont couldnt find president Baton Rouge club hosting event came up us said found model about 100 ft looking right Continued page 12 Hobby Horn hobby specialtaes MIDWAY MODEL CO Old Timer Kits R/G AND FF Hobby Horn discount prices MMC FULL KiTS lixted Full Kits Include Cut parta plan strip xheet wood wire window material Kits marked ' have wire landing gear pre-bent 1938 FlyIng Quaker 84$0476 1938 Powerhouse 50B*$2996 1937 Long CabIn 76$4716 1939 T Sporteter 50$2990 1937 Quaker Flash 07$4556 1940 Buzzard Bombshell SO span kit$3596 1937 Air Chief 61$3696 uIer74 57116 100 Glidern Old ~ThermlcEad1alat g5 Timer SaIlplanemodIfIcations s own R/ 0 P&WMODELSERVICE Old Timer kits FF C following disoount price full kits full kits clude cut parts plan stick sheet wood wire windshield material 1935 MIss AmerIca 84$7196 1936 Buccaneer 84$5996 1937 Dallelre 108$7516 1938 ClIpper Mk 72$5320 1936 Kioud King 63$4236 1936 Powerhouse 64$5350 1938 Record Breaker 96$8950 1938 Trenton Terror 72$4076 1939 Korda Wake 44$1916 1939 Mercury 72$5836 1939 Zipper 04$5356 1940 Rancr46$3196 1940 Sailplane 78$8476 1940 So Long SO$3036 1941 BrigIdler 56$4076 1941 Super Quaker 78$7276 1941 PlayboyJr 54$3116 1941 Playboy Sr 78$7276 1941 P---" flA.r 56$4236 82 Page 1990 CATALOGUR ad 200$2 pp/i Class free 00 addrequested let order t50 $2001 $4500 id $32S $4501 to HbbH 000 add $375 Over orn 00O add $4SO 15173 MO N ST[A] alif add 625% lax BOX 2212 end MO VISA/MO # &WESTMINSTERCA 92684 p check allow up 714893-8311 30 days learance Hours Mon-Fri 9AM checks 10 Model Aviation b FREE COCKPIT KIT NAME ADDRESS Add 20% postage Send see catalog CANNON805 581-5061 RIC SYSTEMS 2828 Cochren St Suite 281 Simi Valley CA 93068 8-MARK N/c U/C ENGINES SUPERB PRECISION EASYSTARTING ENGINES WITH TRUE R/CTHROTTLEOPERATION RELIABLE LOSPEED IDLE WITH SMOOTH RPM TRANSITION TO HISPEED TOP END 061 N/C17500 RPM $497 UCONTROL ENGINE WITH STANDARD CARBI STD GLOW PLUG NOT FURNISHED COMPLETE WITH THROTTLE p550 6000 1BOOO RPM 03 H/C WITH GLOW HEAD & PROP U-CONTROL VERSION $4275 WITH STANDARD CARB MUFFLERS ARE STANDARD WITH ALL ENGINES ADO $450 SHIPPING & HANDLING BROCHURE $100 IN USA AND $3OO FOREIGN ADD EQUIPMENT SALES TAX IN CA CASH PRICES SHOWN CARDS 6% MORE 2D DEPOSIT ON COD middle crawfish pond island told him wasnt about go out looked like snake pond club pres ident took off shoes socks reached truck pulled out biggest ma chete have ever seen started across water island About half way came face face water moc casin reason wasnt going wa ter After chopping 50 gallons water grabbed plane ran back model wasnt damaged Im new RC like said everyone RC nice Baton Rouge RC Club guysand go out way help others dont knowI feel no finer people around CL RC Leon Wilcox Beaumont TX love Model Aviation magazine very much look forward getting month am new sport Radio Control air planes father taught fly Con trol Line models younger picture enclosed fifth RC Continued page 117 old timer perfectly proportioned modeling Curtlas Robin1 049 EngIne -Channel RIC 41 Wingspan Electric Power Optional aa*s t Very few full scale aircraft ideaiiy suited model Bight th appealing old Curtis Robin wee born spruce linen age beaufifully proportioned rubbr electric glow engines Easy end fun build trainer-like performance Flylina Models Cetelog 506nOons 17031 2730003 FLYLINE MODELS INC 0 Sex 2136 Fairfax Virginia22031 USA WHAT 00 YOU CALL THE BEST SHEETING Tigerskins MATERIAL FOR FOAM WING CORES WnoPls oO,eeolOncwewaconsnuto nm.ny nOAiwsnh,uso,erothnshon ,s.nion,oidiwe&p.w.,uncssinrlssie.nO.[v32][b2308245991420900]] OstrrOni5tenwh5cendO55Oiniun tue nunieorolocOiitCtCSnentsCfl .ndii,nOOinOnuento tflues hnis p icc e w us ,i toso nst i.tong au. tHECK THESE FEATURESConnes n foilotting colors C SupCrio strenot welont asicwaco Red C Sipenior bond capability foamPolar White C 001 per ty 0 temperature stabilitynoignia Blue C Smooth Slots finishSun Yellow C Sperior resistance nitro fuel C Superior rnsiotanye weather C Easy apply C Lost out post C 1/54 03 35 sice tu th Pu0tthPhp 0 PhPgc P PbpnOih C PP2itefltp Phone 3093423009 pocEyNif he, phapt ,intnennderltrrOP rsnanon OdsdOtneoinshrluo ban.ta Ods sydOnconolwrtoloarta*4SSperahaat SEND 0400 FOR CATAICO lImo s Residents act S 1/001 sales tao WING Mfg 306 E SimmoRa Galeaburg IL 61401 12 Model Aviation PO Box 299 Gonzales TX 78269 512 672-7023 F4U Sport Scale Corsair plus shipping spiral stability Gliders RC Sailplanes other major variable size location vertical stabi lizer would interesting test several airplanes plot required value 55 against vertical tail volume Details might include wing section used pro portions fuselage would enable designer identify major determi nants spiral stability outset dont foresee doing experiment myself sincerely encourage enterprising exper imenters modeling community give try Its worth pursuing might make respectable thesis great science proj ect Summary conclusions curved air flow over circling model affects mod els yaw pitch trim setting model will yaw outside pitch down circling effects quantified illustrated Figures 2 through 5 natural pitchdown consequent speedup circling increases spiral sta bility speedup allows spirally unstable airplanes become stable limited bank angle contrast spirally stable planes can trimmed fly slowly bank angle Spiral stability crucial both qual ity performance Sailplane flight Spiral instability introduces extra pilot ing task tends reduce concentra tion primary needs diminish ac tual performance plane Fully Sheeted Hardware Included Wing Span 72 Wing Area 875 Weight 9-11 lbs 90- 108 Two Stroke 120 Iour Stroke Engine egree Retracts 00 E Pneumatic Rotating Retracts 00 Letters Editor Continued page 12 model second attempt Scale Pica /6-scale Focke-Wulf 190 D9 powered K&B 61 engine flies great first Scale model P-s 1 Mus tang just beautiful rolled low altitude day Keep up good work guys James Teneskenz Virginia Beach VA Presidential/Baker Continued page 100 AMA Director Marketing Geoff Styles assistant Bill Baker represented AMA ARC-sponsored dinner attended numerous Bush administra tion officials congressmen ARC federation 100 organizations companies seeking expand qual ity quantity recreation choices America AMA has member sev eral years through affiliation kept informed about governmental activity could affect recreational pastimes cluding model aviation Humphreys addition serving ARC chairman also president Rec reation Vehicle Industry Association RVIA first vice-chairman Travel 65 LNUINtb Airplane Marine K&B FUELSK&B GLOW PLUGS 9 Blends4 Choices Matched Finish System tar BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER FOXY THINNER K&B SUPER FOXY PRIMER K&B SUPER FOXY PAINT K&B MIXING CUPS Solid cast aluminum body weight appron 1 lb. Please designate strut length 1 yr warranty except crash damagel will fit Quarter Scale plane weight 1 1-25 lbs Industry Association TIA practic ing attorney Last year named RV dustry Executive Decade Despite responsibilities being Washington areas top association ex ecutives Humphreys finds time active model aviation competes numer ous club contests fun fly events year frequently flies during after noon field near office Weekends find him guiding Bud Light Laser through skies above private flying field near home Shepherdstown WV cites building flying repairing models excellent way relax un wind hectic schedule September proclaimed Sport Aviation Month President Bush addition ing ardent supporter recreation Presi dent Bush also has keen interest avia tion Encouraged National Aeronau tic Association NAA Federal Avia tion Administration FAA chief James Bu sey president named September Sport Aviation Month President Bush acknowledged impor tance sport aviation letter NAA ort flying continues prompt advances aircraft technology thus contributing aeronautical knowl edge AMAs Director Marketing Geoff Styles impressed presidents action Having President Bush publicly KRC PRE-BUILT G SHARK $2149S SEE YOUR HOBBY DEALER FIRST SEND STAMPED #10 ENVELOPE FOR INFO KINGS WAY RIG HOBBY SUPPLY 5559 RICHMOND HOUSTON TX 77056 DEALERS ONLY 1-800-621-7783 October 1990 117 GRAPHICS line stripes numbers letters stars & trimsheets individually die cut fuel resistant other Micro-thin too Red white rj yellow blue & black C0VERITE i L 420 Babylon Rd Horsham PA 19044 USA

Do away wasted tie straps isolate tuned pipe HUSH-CLAMP perfect compliment soft mounted engine Easy use HUSH-CLAMP 60$475 HUSH-CLAMP 40$475 HUSH-CLAMP LITE* 60 ..$375 HUSH-CLAMP LITE* 40 ..$375 *LITE replaces bushing nylon bolt Remember nothing damps like VIBRA-DAMP engine mounts Available better Hobby Dealers order direct add $150 shipping PERFORMANCE PRODUCTS UNLIMITED 7093 E Dodge Rd Mt Moms Mi 48458 Phone Orders 313 631-4894 Visa/MC accept As new member AMA number 347736 enjoy Model Aviation very much read cover cover although sometimes takes week two article Behind Scenes ledo August 1990 issue excel lent page 80 picture K Leroy Irvis Herb Wahi incorrectly la beled Mr Irvis gentleman right left caption states Mr Irvis well known Pittsburgh area both legislative activities air plane modeling field local modelers fly named K Leroy Irvis RC Model Airport Thanks efforts staff publishing best magazine field model aircraft H Glenn Benton Pittsburgh PA wondered about mistake day received advance copies Au gust issue pictures art boards came back printer swer clear MAs printer inadver tently flopped screened negative picture combined type pageand failed catch er ror checking printers proof . And en Preceding Page August issue Model Aviation mag azine arrived yesterday As always began reading immediately got page 79 surprised flattered found picture airplane right up top page read caption below picture said airplane called Airtrax created someone named Bob Ray Ohio airplane really named Enforcerus designed built picture taken first day show last day Enforcerus awarded first place MonoKote di vision second place Sport Power Enforcerus Saito 90 twin swinging 14 x 8 Zinger pusher pro peller uses Spring Air retracts has onboard glow igniter keep fourContinued page 8 6 Model Aviation BURN HOLES IN THE SKY LANIER RCu REBEL CAT NO 78129 GREAT FLYING RIPE THAT IS CAPABLE OF ANY MANEUVER YOUVE GOT THE GUTS TO DOI Fuselage Length 35Wing Span 50 Rec Engine Size 45-60 4 Stroke 60-80Area 700 sq Flying Weight 6V-7 lbsRadio Channels 4 Available favorite hobby dealerRepiacement parts avaliabie Deaier distributor inquiries Invited Write today free color catalog PO Box 458Oakwood Georgia 30566404-532-6401 Made USA ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE Davey Systems 3 REAT SPORT-SCALE IPES Designed 40-60 two-cycle 60-90 four-cycle engines 40-size electric motors three feature box type construction extensive prefabrication quick assembly Also included full size plans step-by-step instruc tions hardware preformed bolt-on landing gear bolt-on wings prepackaged small parts STAMPE 5V4 famous French aeroba tic primary trainer Preformed welded wire wing cabane vacuum formed cowl 56 span 1000 sq area 6 7 lb flying weight GREAT LAKES SPECIAL beautiful rendition classic aerobatic biplane preformed wire cabane struts vacuum formed cowl wheel pants precut tail feathers 53 top 48 bottom wing 798 sq area 6 6 lb flying weight STEARMAN 75 PT-17/N2S-3 gorgeous copy famous trainer crop sprayer aerobatic show stopper Preformed wire cabane struts precut tail feathers 51 top 48 bottom wings 750 sq area 6 61/2 lb flying weight IAVEY675 TOWER LANE YSTEMSWESTCHESTER PA 19380 oRPORATIoN 215-430-8645 stroker dependable low end StrobeF-Light strobes installed Truster Motors wings whole thing under control five-channel Futaba PCM system has solar-powered back-lighted radar screen instrument panel Faye L Stilley Wilton CT Summer Day Camp Medeling Seven Lakes Aeromodelers RC Club West End NC conducting model build ing program boys girls enrolled Seven Lakes Landowners Association Day Camp first three classes held June 28 1990 11 boys girls constructed AMA Delta Darts Follow ing two-hour building session youngster thrill successfully launching rubber-powered airplane out doors As readers probably know model aircraft construction flying exciting activity youngsters does occupy minds children use ful way specifically helps prob lem solving creativity manual skills see joy faces youngsters self-created craft fly grace Continued page 10 8 Model Aviation Ive enclosed snapshot full-scale aircraft taken friend last shuttle flight Thanks always interesting usu ally accurate magazine 28 KITS TO CHOOSE FROM F 1/5 SCALE Wing Span72 Wing Area 1530 sq Weight12-l3Ibs Engine75-90 2c 90-12 4c / CONTACT YOUR LOCAL DEALER MA WACO YMF 1/6 SCALE Wing Span60 Wing Area960 sq WeightBibs Engine61 2c 90 4c MADE IN THE USA Receive FREE cockpit kit PICA standoff scale model purchased between September 1 1990 November 301990 sending proof-of-purchase PICA postmarked no later December31 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 MODEL 5CALE SIZE ____________ CITY STATE ZIP PICA ENTERPRISES INC NE 188th STREET MIAMIFLORIDA 33180 305 935-1436 APPLIED DESIGN CORPORATION PO Box 3384 Torrance CA 90510 MINI ER ADJUSTABLE TENSION HAND BELT SANDER FIRMLY HOLDS PAPER FOR EASIER SANDING Padded flats calve Handy Held Easyl Use $275 MINI-STRIPSPRECISION DIECUT Medium Garnet SAVES TIMEREPLACEMENTFine Garnet AND EFFORT $1 75SANDING BELTSAseld Water Preet TEE i ALUMINUM EXTRUSION SANDING BLOCK ler ene wh RUFF-STUFF Selt-edheelee sand paper Large Tnae Settee Wee tWearOat 11 ecu $300 Handyte Use flinch $450 RUFF 6 STUFF SELF ADHESIVE SHEET SANDPAPER MAKE YOUR OWN SPECIAL SANDING SHAPES Easy Ia Use Ne messy glee er dryIng tune $115 Medium Flee r Flee MINbsAw $850 COMPACT 10 insh HACK SAW SAWS ANYTHING ANYWHERE Saw han rugged diecast train wIth eantntabte chlp-preet plastIc 541 hendle RecedIng see ad pastable 6 blade glue gad werk access Cats weed plastIc metal HARDENED MUSIC WIREextra blsdes-31S205 beauty something behold Modeling wholesome rewarding challenging hobby young people can pursued enjoyed through entire lives Raymond H Barnes West End NC No Finer People Around am new RC flying flew Control Line younger enjoyed very much Now Ive flying RC about month isnt anything bet ter first RC plane Astro Flight Mini-Challenger crashed beyond re pair built Bob Martin Pussy Cat cut down wingspan 60 mounted power pod could fly AMA 702 RC Duration contest Baton Rouge May 27 didnt place con test great time met some real nice people flights forgot turn receiver dumb away went best engine run time too plane flew about half mile away started chasing wife some friends Beaumont couldnt find president Baton Rouge club hosting event came up us said found model about 100 ft looking right Continued page 12 Hobby Horn hobby specialtaes MIDWAY MODEL CO Old Timer Kits R/G AND FF Hobby Horn discount prices MMC FULL KiTS lixted Full Kits Include Cut parta plan strip xheet wood wire window material Kits marked ' have wire landing gear pre-bent 1938 FlyIng Quaker 84$0476 1938 Powerhouse 50B*$2996 1937 Long CabIn 76$4716 1939 T Sporteter 50$2990 1937 Quaker Flash 07$4556 1940 Buzzard Bombshell SO span kit$3596 1937 Air Chief 61$3696 uIer74 57116 100 Glidern Old ~ThermlcEad1alat g5 Timer SaIlplanemodIfIcations s own R/ 0 P&WMODELSERVICE Old Timer kits FF C following disoount price full kits full kits clude cut parts plan stick sheet wood wire windshield material 1935 MIss AmerIca 84$7196 1936 Buccaneer 84$5996 1937 Dallelre 108$7516 1938 ClIpper Mk 72$5320 1936 Kioud King 63$4236 1936 Powerhouse 64$5350 1938 Record Breaker 96$8950 1938 Trenton Terror 72$4076 1939 Korda Wake 44$1916 1939 Mercury 72$5836 1939 Zipper 04$5356 1940 Rancr46$3196 1940 Sailplane 78$8476 1940 So Long SO$3036 1941 BrigIdler 56$4076 1941 Super Quaker 78$7276 1941 PlayboyJr 54$3116 1941 Playboy Sr 78$7276 1941 P---" flA.r 56$4236 82 Page 1990 CATALOGUR ad 200$2 pp/i Class free 00 addrequested let order t50 $2001 $4500 id $32S $4501 to HbbH 000 add $375 Over orn 00O add $4SO 15173 MO N ST[A] alif add 625% lax BOX 2212 end MO VISA/MO # &WESTMINSTERCA 92684 p check allow up 714893-8311 30 days learance Hours Mon-Fri 9AM checks 10 Model Aviation b FREE COCKPIT KIT NAME ADDRESS Add 20% postage Send see catalog CANNON805 581-5061 RIC SYSTEMS 2828 Cochren St Suite 281 Simi Valley CA 93068 8-MARK N/c U/C ENGINES SUPERB PRECISION EASYSTARTING ENGINES WITH TRUE R/CTHROTTLEOPERATION RELIABLE LOSPEED IDLE WITH SMOOTH RPM TRANSITION TO HISPEED TOP END 061 N/C17500 RPM $497 UCONTROL ENGINE WITH STANDARD CARBI STD GLOW PLUG NOT FURNISHED COMPLETE WITH THROTTLE p550 6000 1BOOO RPM 03 H/C WITH GLOW HEAD & PROP U-CONTROL VERSION $4275 WITH STANDARD CARB MUFFLERS ARE STANDARD WITH ALL ENGINES ADO $450 SHIPPING & HANDLING BROCHURE $100 IN USA AND $3OO FOREIGN ADD EQUIPMENT SALES TAX IN CA CASH PRICES SHOWN CARDS 6% MORE 2D DEPOSIT ON COD middle crawfish pond island told him wasnt about go out looked like snake pond club pres ident took off shoes socks reached truck pulled out biggest ma chete have ever seen started across water island About half way came face face water moc casin reason wasnt going wa ter After chopping 50 gallons water grabbed plane ran back model wasnt damaged Im new RC like said everyone RC nice Baton Rouge RC Club guysand go out way help others dont knowI feel no finer people around CL RC Leon Wilcox Beaumont TX love Model Aviation magazine very much look forward getting month am new sport Radio Control air planes father taught fly Con trol Line models younger picture enclosed fifth RC Continued page 117 old timer perfectly proportioned modeling Curtlas Robin1 049 EngIne -Channel RIC 41 Wingspan Electric Power Optional aa*s t Very few full scale aircraft ideaiiy suited model Bight th appealing old Curtis Robin wee born spruce linen age beaufifully proportioned rubbr electric glow engines Easy end fun build trainer-like performance Flylina Models Cetelog 506nOons 17031 2730003 FLYLINE MODELS INC 0 Sex 2136 Fairfax Virginia22031 USA WHAT 00 YOU CALL THE BEST SHEETING Tigerskins MATERIAL FOR FOAM WING CORES WnoPls oO,eeolOncwewaconsnuto nm.ny nOAiwsnh,uso,erothnshon ,s.nion,oidiwe&p.w.,uncssinrlssie.nO.[v32][b2308245991420900]] OstrrOni5tenwh5cendO55Oiniun tue nunieorolocOiitCtCSnentsCfl .ndii,nOOinOnuento tflues hnis p icc e w us ,i toso nst i.tong au. tHECK THESE FEATURESConnes n foilotting colors C SupCrio strenot welont asicwaco Red C Sipenior bond capability foamPolar White C 001 per ty 0 temperature stabilitynoignia Blue C Smooth Slots finishSun Yellow C Sperior resistance nitro fuel C Superior rnsiotanye weather C Easy apply C Lost out post C 1/54 03 35 sice tu th Pu0tthPhp 0 PhPgc P PbpnOih C PP2itefltp Phone 3093423009 pocEyNif he, phapt ,intnennderltrrOP rsnanon OdsdOtneoinshrluo ban.ta Ods sydOnconolwrtoloarta*4SSperahaat SEND 0400 FOR CATAICO lImo s Residents act S 1/001 sales tao WING Mfg 306 E SimmoRa Galeaburg IL 61401 12 Model Aviation PO Box 299 Gonzales TX 78269 512 672-7023 F4U Sport Scale Corsair plus shipping spiral stability Gliders RC Sailplanes other major variable size location vertical stabi lizer would interesting test several airplanes plot required value 55 against vertical tail volume Details might include wing section used pro portions fuselage would enable designer identify major determi nants spiral stability outset dont foresee doing experiment myself sincerely encourage enterprising exper imenters modeling community give try Its worth pursuing might make respectable thesis great science proj ect Summary conclusions curved air flow over circling model affects mod els yaw pitch trim setting model will yaw outside pitch down circling effects quantified illustrated Figures 2 through 5 natural pitchdown consequent speedup circling increases spiral sta bility speedup allows spirally unstable airplanes become stable limited bank angle contrast spirally stable planes can trimmed fly slowly bank angle Spiral stability crucial both qual ity performance Sailplane flight Spiral instability introduces extra pilot ing task tends reduce concentra tion primary needs diminish ac tual performance plane Fully Sheeted Hardware Included Wing Span 72 Wing Area 875 Weight 9-11 lbs 90- 108 Two Stroke 120 Iour Stroke Engine egree Retracts 00 E Pneumatic Rotating Retracts 00 Letters Editor Continued page 12 model second attempt Scale Pica /6-scale Focke-Wulf 190 D9 powered K&B 61 engine flies great first Scale model P-s 1 Mus tang just beautiful rolled low altitude day Keep up good work guys James Teneskenz Virginia Beach VA Presidential/Baker Continued page 100 AMA Director Marketing Geoff Styles assistant Bill Baker represented AMA ARC-sponsored dinner attended numerous Bush administra tion officials congressmen ARC federation 100 organizations companies seeking expand qual ity quantity recreation choices America AMA has member sev eral years through affiliation kept informed about governmental activity could affect recreational pastimes cluding model aviation Humphreys addition serving ARC chairman also president Rec reation Vehicle Industry Association RVIA first vice-chairman Travel 65 LNUINtb Airplane Marine K&B FUELSK&B GLOW PLUGS 9 Blends4 Choices Matched Finish System tar BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micro-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER FOXY THINNER K&B SUPER FOXY PRIMER K&B SUPER FOXY PAINT K&B MIXING CUPS Solid cast aluminum body weight appron 1 lb. Please designate strut length 1 yr warranty except crash damagel will fit Quarter Scale plane weight 1 1-25 lbs Industry Association TIA practic ing attorney Last year named RV dustry Executive Decade Despite responsibilities being Washington areas top association ex ecutives Humphreys finds time active model aviation competes numer ous club contests fun fly events year frequently flies during after noon field near office Weekends find him guiding Bud Light Laser through skies above private flying field near home Shepherdstown WV cites building flying repairing models excellent way relax un wind hectic schedule September proclaimed Sport Aviation Month President Bush addition ing ardent supporter recreation Presi dent Bush also has keen interest avia tion Encouraged National Aeronau tic Association NAA Federal Avia tion Administration FAA chief James Bu sey president named September Sport Aviation Month President Bush acknowledged impor tance sport aviation letter NAA ort flying continues prompt advances aircraft technology thus contributing aeronautical knowl edge AMAs Director Marketing Geoff Styles impressed presidents action Having President Bush publicly KRC PRE-BUILT G SHARK $2149S SEE YOUR HOBBY DEALER FIRST SEND STAMPED #10 ENVELOPE FOR INFO KINGS WAY RIG HOBBY SUPPLY 5559 RICHMOND HOUSTON TX 77056 DEALERS ONLY 1-800-621-7783 October 1990 117 GRAPHICS line stripes numbers letters stars & trimsheets individually die cut fuel resistant other Micro-thin too Red white rj yellow blue & black C0VERITE i L 420 Babylon Rd Horsham PA 19044 USA