Radio Control: Sport & Aerobatics

Radio Control Sport & Aerobatics Ron Van Putte WIND ALOFT read John Pres tons August 1984 Safety Comes First column enjoyed description what would like fly RC airplane aircraft carrier moving downwind same speed wind such perfect example aircraft unaware steady wind mentioned November 1984 column description appeared club newsletter vague feeling Id read before several years ago Sometime after appearance November issue Model Aviation copied portion Frank Ernest comic Sunday newspaper sent off South Africa comic person Frank saying difference between ground speed air speed another person Ernest saying Thats easy Its because earth round air flat did send off South Africa turns out Len Salter has written much anyone about effects wind flight aircraft lives Cape Town South Africa thought hed enjoy comic also sent along copy November column contained figures showing ground track airplane performing 180 ing wind conditions few days ago received letter Len Salter wrote very pleased receive letter together copy article appearing November edition Model Aviation will quoting first part arti cle Flysheet newsletter Cape Radio Fliers Cape Town South Africa R VP also publishing amusing cartoon kindly enclosed have told also think best article have ever written relating wind effect titled Need Aircraft Carrier Bingo R VP published RCM E Radio Control Models Electron icsR VP also Wings Over Africa magazine published caters aspects aviation including modeling write regular monthly col umn have enclosed copy article June edition get back aircraft carrier arti cle created quite stir England follow-up article indicates case never saw articles am enclosing copies herewith received stack let ters passed RCM E mostly nuts relate kinetics aircraft flight ground 46 Model Aviation Now Van Puttes flying skills have deteriorated thing can hope win raffiel prize 0 PS Super 60 pipe first annual Pattern contest Gadsden AL Ron says besides raffle nice contest too Several members Chicagoarea Suburban RC Barnetormers Club built OS 90 fourcyciepowered Senior Telemaster use haul everything aloft AAs big Saliplanes Note extra vertical fins better steeringidea stolen NASA extra fin also has rudder too Photo sent Richard Smith models builders Whats message Cant model stand its own noiser i mu iu ruaucu lousl Seen annual contest Lafayette LA have always propounded force related groundand gravity background may some inter est Although have resided South Africa since 1966 am still British citizen hold British passport am ex-RAF pilot served during war During 4A years RAF flew Tiger Moths Fleet Finches Avro Ansons Avro Lancasters may remember 1979 South Africa staged eleventh World FAI RC Aerobatics Championships gave opportunity meet some AMA officials such John Worth John made reciprocal arrangement whereby sent Flysheet received copies Model Aviation also got acquainted USA team year comprised Dave Brown Mark Radcliff Dean Koger Apart field fraternized various social events Sally Brown wrote very glowing account champion ships hospitality Americans encountered Well think Ive written enough now before signing off want thank contacting trust letter has interest Keep up good work hope enjoy aircraft carrier articles want quote articles enclosed guest Well think Ill just Len Salter knows what writes about Ive enjoyed articles does have unique way taunting people dont agree views will observe following excerpts articles Continued Page 128 1~O4 r 0s &IL# AS 0 WE NEED DEALERS! KITS ATLANTA 60$22275 OMEGA 60$20588 SIGMA II 60$24550 ACRO STAR 60$16315 QUATRO 40$15061 EXCEED4O. $15188 HARDWARE IM SERVO MOUNTS.. $164 IMCAMLOCKS$149 MK CONTROL HORNS. $ 88 DIGICON HORNS$105 DIGICON TUBES IN TUBES operation flaps 10 DIGICON HINGES 12. $161 TETTRA AIR FILTERS 7912 14mm$277 ISHIPLA FUEL FILTERS. $200 ISHIPLA PUSH RODS. $130 PULL-PULL HARDWARE $346 PULL-PULL HORN$ 74 WHEELS prices wheel TETTRA SUPER WHEELS.. $513 5055 60mm type R V U MK ALUMINUM WHEELS. $841 152 56 60mm Radial MI PLASTIC WHEELS$231 45 5055 60mm Radial IM PLASTIC WHEELS 3035mm $197 4045mm $223 50mm $24855mm $272 60mm $29765mm $322 TETTRA SPARE TIRES$221 specify size & type MKFUELTANKS 450cclSozSLM$196 400cc133ozSLIM . $169 360cc 12 oz ROUND. $138 300cclOozROUND. $138 360cc 12 oz OVAL$138 320cc 1 07 ozIOVAL.. $138 MlOOOcc$392 TOOLS & ACCESS. TETTRA TUBING BENDER $476 NIWA TOOL KIT$895 TETTRA GLOW PLUG WRENCH$430 IM ENGINE TEST BENCH $428 IM STAND FOR BENCH $2673 MKWIRE BENDER 775 MSK TRANSMITTER CASE $2800 HATORI HEADERS AND PIPES #601 10cc PIPE $ 3423 #401 75cc PIPE 2995 Headers fit YS OS EnVa Webbra OPS & Ross RETRACTS e pans available MK S60 S40 NOSE$ 1733 MAINS$ 2450 Shipping handling orders up $2000 add $195 $2001 $6000 add $360 over $5000 add $500 Except Kits loveraizedl add $700 engine orders add $300 California residents muac add 6/i% sales tax VISA end MasterCard ac cepted Add $165 COD International order welcome additional shipping charges will applied Send $100 Catalog Information RIC GOLDEN GATE HOBBIES PO Box 4412 Burligame CA 94010 10 em -6 pm PST Monday thru Friday 415-467-3170 San Francisco see products San Antonio Hobby Shop 415-941-1278 March 1985 47 WaltI Master Class-flier Bill Rutledge preparing fly Novice-pattern bIrd 1 Would believe competing Turn around Kaos 40 great ones keep right coming RI Two-time Nats Master Class champ Ron Chidgey fires up new Tar Baby Turnaround pattern flight Jim Doc Edwards assists Tar Baby very gracefuland Its tail-dragger RC Soaring Pruss Continued page 45 lashes team affected take lumps send scores wait see fared Its rather refreshing see event protesters could have field daybut instead modelers word form airmailed score sheet accepted never questioned So club would like competejust fun itin worldwide event straying too far own clubhouse get contact Pinellas Soaring Association Write Kale Harden 3184 Brunswick Circle Palm Harbor FL 33563 USA Mark Triebes Saratoga CA sent shot series own designs calls Mariah just case thought very large tree supporting Mariah its Mariah one-meter bird weighs 16 ounces very acrobatic ailerons elevator its functions designed flown slope Con struction very basic using balsa Airply covering MonoKote Lets s see now over past several months weve covered five-meter birds few fours lotsa threes some twos now next step obviously nometer bird Send best shots expert panel will determine best class Without doubt success ful cross country events 1984 Thousand Oaks Soaring Societys TOSS Western Great Race some things going site Taft synonymous Free Flight great contests area has miles miles nothing miles miles Thirteen teams entered Sailplanes cross section fine cross country flying machines Included Larry Jollys new design soon kitted Comet bird wing span nearly 15 feet Airfoil Eppler 205 fuselage fiberglass its large enough carry radio gear plus small lunch Geminis modified Sagitta XCs Merlyn several original designs stretched Gemini sported 12-foot wing Mike Bame-designed airfoil course goal-and-return totaling 20 miles six 13 teams finished keep score airfoils used reports TOSS president Chuck Griswold say Eppler 205 did well Eppler 374 did bettermake best Yes airfoil four-meter wing Sailplane designed three Cal Poly aeronautical engineering students won first place Norm Timbs Gary Ward Joe Wurts combined talents three beat comers plane called Silent Knight flown maximum FAI weight limit five kilograms 11 lb truly race abovenamed team flew its bird over 20-mile course 004443 28 seconds faster second-place team Art Ames Wayne Meredith Ken Pattie Sinclair TOSS Comet took Bob Goldie Keith Kin drick Trent McGee 005044 cover 20 miles Gemini good enough third place Larry Jolly minute 46 seconds behind Comet finished exactly minute ahead John Lewis Dick Madison Clarence Nikkel Vein Oldershaw Merlyn Sixth place went another TOSS team Percy Megginson Bret Don Northern Sagitta XC time 010448 As can tell times logged excitement want part next summer contact TOSS details Write Chuck Griswold TOSS President Thousand Oaks Soaring Society P0 Box 1955 Thousand Oaks CA 91360 meantime support USA/F3B team contest early side year time April Mike Reagan Mike Bame Steve Neu team manager Blame Rawdon will head Australia contribution will help five dollars contributed youll receive patch can wear show team support Whether youre weekend flier contest chaser benefit teams efforts Support Contributions can sent Ms Helen Olsen USA/F3B Fund-Raising Manager 8875 Oveida Plaza Westmin ster CA 92683 Good lift Dan Pruss 131 E Pennington Ln Plainfield IL 60544 RC Aerobatics/Van Putte Continued page 47 Wind has no effect whatsoever reactions aircraft flight turbu lence wind shear springs mind acknowledge existence refer wind article am referring constant-moving air mass Wind will affect aircraft relative ground will drift 100% wind aircraft carrier story originally youve already read itright dig out August 1984 issue read about Safety Comes First R VP gentlemen quite simple really except diehards perpetuate fallacies As said before does have way sticking needle critics doesnt Nevertheless hes got some great ideas debunk theories wind affects aircraft articles forward ed following delightful idea 1 28 Model Aviation Power Soar New Heights LT-50 GEAR MOTOR Leisures Gear Drive conversion 31 powerful LT-50 develops up 2 lbs static trhrust Gear Drive also features ball bearing Delrin/brass gearing glass loaded polycarbonate housing Send self-addressed stamped envelope catalog ap plication notes Leisure 11 DeerspringllrvinelCA 92714 h Wa,t REV-UP Props Average Inventory ODO Props! Over SO Sizes Events New 4heut Custom Tuned Engines Combat Racing Free Flight 6 Sport Cenepetitien Accessories 6 Parts Pyloa Raciag Pattera 6 Sport FF 6 V/C. Rage Inventory! Specialists Custom Ce 1D 6 Reed Engines Std 6 R/C Custom Parts Ce Engines Complete Inventory OF Indi v/dual Stick Parts Current 1D 6 Medalliea Engines New Parts Discontinued Co Engines Replica Orwick 23 29 *nd 6 Engines Ignition Engine Accessories Visa 6 MasterCard Welcome Detailed Drechure Send 75t Kustem KraFtsmanshp PO 5ev 26DP Laguna Sills CA 92S Ph 71130-5162 UUMIhEL Its Easier Land Engine Running OPSs SLA RC 40 comes OPS slide carb complements great engine performanc performance makes look good SCall Parts Peordeof eddIeC3E 91%de4t4 %tc PO Box 26247 New Orleans LA 70186 242-5967 Now dispel myth kinetic energy aircraft subject equal thrust force will vary between intowind flight downwind flight flight other direction simple ex periment will prove conclusively above myth after just myth Attend flying field equipped stopwatch plus pen paper enlist aid colleague act timekeeper recorder Proceed follows Fly safe height go way out downwind come full bore repeatable accuracy maximum airspeed ready call Now timekeeper fully close throttle same time command Now timekeeper starts watch fly straight level long possible Ignoring idling prop affects nothing experiment kinetic energy now models energy source Drag will dissipate energy causing airspeed progres sively reduced Eventually aircraft will stall seeing nose wing drop watch stopped dura lion level flight time recorded Next repeat procedure downwind repeat across wind both directions sequence directions flown no importance eventually check recorded figures will have surprising some experi ence finding recorded times equal plus minus human error little human error will creep such maintaining absolutely level flight greater accuracy procedure can repeated Now what happened false ly presumed additional kinetic energy flew downwind down wind ground speed certainly highest four runs timed durations level flight equal kinetic energy fact related earth surely downwind period level flight should have much longer into-wind Now great Id written Id have settled back very pleased effort Mr Salter goes say Another example debunk same myth personal experi ence have flown full-size Tiger Moth strong headwind backwards relative earth am sure am Now lets apply kinetic energy myth situation implies aircraft no kinetic energy minus quality should have fallen out sky does have way doesnt would like complete set what Len Salter sent mail selfaddressed stamped envelope SASE Id glad send about concludes column long came what sent let finish off idea sent Bill Kite Kings port TN Bill wrote club Tn Cities Aeromodelers Inc has club din ner picnic year looking change came up something called Pattern Poker works like take some playing cards ace through nine case Sportsman Novice Add some higher cards higher classes Pattern contestant draws six cards depending what draws assigned maneuvers contest six cards come classification flies examContinued page 132 DUAL PERSONAUTY TRAINER EMINIS BEAUTIFUL UPER CHAMP 2 LtEALERf DISTRIBUTOR INQUIRIES INVITED S 54 - 35 ENGINES HANNEL THE BEGINNERS KITTEN AND EXPERTS TIGER Revolutionary snap-on WIfl9 eliminates bolts rubber bands Complete kit $5495 dealer direct EMINI MODELS INC Box 1188 Passxc NJ 07055 March 1985 129 -T See Hobby Shop New Model Magic Products Model Magic Epoxy Plus 2 Part 8 Mm Use anywhere two part epoxy used 25% lighter Sandable Carveable Excellent Gap Filling Non Sagging Superior Strength Sands Carves Like Basswoodll 6 fI oz$895 Equal 00 over 8 oz regular epoxys See dealer firot write call Model Magk Podicts kic P0 Box 19754 SIPauL MN 55119 17151425-1197 PRECISION BALiICE m ALL DIRECi Heres equipment need give props very best balance--balance diredions Carefully crafted top grade materials BUBBLE BALANCER accomodates 3/161/4 9/32 prop holes Other sizes available special order Dealers invited $1795 AddSlSefer HOWARD 8 HUEBL SEPT 005 pennege hnnlling Mien 6%nnlnnvnnlleC0Dn 8ov52 Re 8 Menkono MN 06001 f THE COMPETITIONS VIEW HE WINDSONG What makes Windsong best plane have deadair lightlift gusting 25 MPH winds thermal contest What makes windsong best plane r have x-country race Some say 17 1 ct ratio clean solidcore wing no spoiler bays urb airflow Others say Eppler 214 airfoil combined exclusive fullspan camber changing o capability including elevator compensated 80 degree flaps 0 N reflexible ailerons fact design innovations contribute Windsongs totaldesign concept its unprecedented performance WITH THEWIND SONG THE WHOLE IS TRULY GREATER THANTHE SUM OF ITS PARTSo Windsong 19995 Camano 15905Pixy 14995 Send 2 stamps catalog $25 VHSvideo tape SW CAMANO DRIVE CAMANO ISLAND WA 98292] N RC Aerobatics/Van Putte Continued page 129 pie Novice classification ace equals takeoff two straight flight out five stall turn draws three addi tional cards what represent will selected next higher Pattern classification So total nine maneuvers scored effort allow equal com petition few fliers different levels example could Novice score higher Procedure Turn Expert Figure M / Rolls dont know answered question lot fun Incidentally invited club 20 miles away 16 contestants Novice won first place Sportsman sec ond Advanced flier third got entire thing over 2/2 hours started eating difficulty need two three decks cards little extra help processing two rounds flight schedule stayed same luck played little part Some drew maneuvers liked others hated draw thought might interested am sounds like fun good ideas out send along about some good pic tures too Ron Van Putte ill Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Scale/Wischers Continued page 49 some cases brought about because nose gear too short Bell Airacobra Kingcobra models having short nose gears ease problem tucking long retractable strut likely candidates treatment Ideally nose gear length should provide wing angle attack requires small amount rotation takeoff avoid damage long nose gear strut obliges pilot make landing mains nose-high position would typical prototype Minor changes main wheel loca tion fore aft trike-geared model sufficiently drastic seriously affect appearance true Scale viewpoint same small changes have magnified effect ground han dling amount control input needed transition ground alr Sport-type airplanes always tried place main wheel centers close behind models CG easy transition takeoff tail manually pushed downward ground supposed stay However arrangement caused crosswind taxiing problem mentioned previously Scale operation average A- A-scale model should have main wheel centers about /2 % rearward CG Careful attention nose gear strut length assures positive angle attack wing least 10 three wheels runway model can flown surface mini mum elevator control applied Douglas A-20G has about 40 angle attack measured wings chord line runway surface nose wheel carries about 5% models total weight Ground steering very positive Heavy up-elevator control needed certain landings main wheels first holding nose wheel above runway until mains make contact Homemade decals art decalco mania process transferring pic tures designs specially-prepared paper surface decorated instance Scale model airplane Insignia manufacturers logo small let ters numerals can painted inked blank decal paper Sources material Sig local decalprinting establishment 12 x 18 sheet listed Sig catalog 754 coated glue transparent film Using decal paper has great advantage over trying paint details directly models surfaces first attempt isnt satisfactory scrap paper can discarded no harm has come model favorite tool drawing decal paper draftsmans ruling SILICONE 10 foot coils TUBING ID 062 092 125us post S/coIl 235 265 325 54/COlL LARRY DODGE AERO INC 10210 1[LWATPD MN MflR2 n,.na LDHOODS Cereal ILD BLUE box Airplanes VONDE Fly Again Sesot Aprodotlen P40 Z5R0 -$500 -SAF FLITS MODELS Box 62M RoiIIe MI 48000 * SCALE DOCUMENTATION* SCALE DRAWINGSMODEL PLANS PHOTOS 1985 BOOKS EPLA-TECH INTERNATIONAL AIRPLANE CATALOG48500 MC KENZIE HWY $300VIDA 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Radio Control Sport & Aerobatics Ron Van Putte WIND ALOFT read John Pres tons August 1984 Safety Comes First column enjoyed description what would like fly RC airplane aircraft carrier moving downwind same speed wind such perfect example aircraft unaware steady wind mentioned November 1984 column description appeared club newsletter vague feeling Id read before several years ago Sometime after appearance November issue Model Aviation copied portion Frank Ernest comic Sunday newspaper sent off South Africa comic person Frank saying difference between ground speed air speed another person Ernest saying Thats easy Its because earth round air flat did send off South Africa turns out Len Salter has written much anyone about effects wind flight aircraft lives Cape Town South Africa thought hed enjoy comic also sent along copy November column contained figures showing ground track airplane performing 180 ing wind conditions few days ago received letter Len Salter wrote very pleased receive letter together copy article appearing November edition Model Aviation will quoting first part arti cle Flysheet newsletter Cape Radio Fliers Cape Town South Africa R VP also publishing amusing cartoon kindly enclosed have told also think best article have ever written relating wind effect titled Need Aircraft Carrier Bingo R VP published RCM E Radio Control Models Electron icsR VP also Wings Over Africa magazine published caters aspects aviation including modeling write regular monthly col umn have enclosed copy article June edition get back aircraft carrier arti cle created quite stir England follow-up article indicates case never saw articles am enclosing copies herewith received stack let ters passed RCM E mostly nuts relate kinetics aircraft flight ground 46 Model Aviation Now Van Puttes flying skills have deteriorated thing can hope win raffiel prize 0 PS Super 60 pipe first annual Pattern contest Gadsden AL Ron says besides raffle nice contest too Several members Chicagoarea Suburban RC Barnetormers Club built OS 90 fourcyciepowered Senior Telemaster use haul everything aloft AAs big Saliplanes Note extra vertical fins better steeringidea stolen NASA extra fin also has rudder too Photo sent Richard Smith models builders Whats message Cant model stand its own noiser i mu iu ruaucu lousl Seen annual contest Lafayette LA have always propounded force related groundand gravity background may some inter est Although have resided South Africa since 1966 am still British citizen hold British passport am ex-RAF pilot served during war During 4A years RAF flew Tiger Moths Fleet Finches Avro Ansons Avro Lancasters may remember 1979 South Africa staged eleventh World FAI RC Aerobatics Championships gave opportunity meet some AMA officials such John Worth John made reciprocal arrangement whereby sent Flysheet received copies Model Aviation also got acquainted USA team year comprised Dave Brown Mark Radcliff Dean Koger Apart field fraternized various social events Sally Brown wrote very glowing account champion ships hospitality Americans encountered Well think Ive written enough now before signing off want thank contacting trust letter has interest Keep up good work hope enjoy aircraft carrier articles want quote articles enclosed guest Well think Ill just Len Salter knows what writes about Ive enjoyed articles does have unique way taunting people dont agree views will observe following excerpts articles Continued Page 128 1~O4 r 0s &IL# AS 0 WE NEED DEALERS! KITS ATLANTA 60$22275 OMEGA 60$20588 SIGMA II 60$24550 ACRO STAR 60$16315 QUATRO 40$15061 EXCEED4O. $15188 HARDWARE IM SERVO MOUNTS.. $164 IMCAMLOCKS$149 MK CONTROL HORNS. $ 88 DIGICON HORNS$105 DIGICON TUBES IN TUBES operation flaps 10 DIGICON HINGES 12. $161 TETTRA AIR FILTERS 7912 14mm$277 ISHIPLA FUEL FILTERS. $200 ISHIPLA PUSH RODS. $130 PULL-PULL HARDWARE $346 PULL-PULL HORN$ 74 WHEELS prices wheel TETTRA SUPER WHEELS.. $513 5055 60mm type R V U MK ALUMINUM WHEELS. $841 152 56 60mm Radial MI PLASTIC WHEELS$231 45 5055 60mm Radial IM PLASTIC WHEELS 3035mm $197 4045mm $223 50mm $24855mm $272 60mm $29765mm $322 TETTRA SPARE TIRES$221 specify size & type MKFUELTANKS 450cclSozSLM$196 400cc133ozSLIM . $169 360cc 12 oz ROUND. $138 300cclOozROUND. $138 360cc 12 oz OVAL$138 320cc 1 07 ozIOVAL.. $138 MlOOOcc$392 TOOLS & ACCESS. TETTRA TUBING BENDER $476 NIWA TOOL KIT$895 TETTRA GLOW PLUG WRENCH$430 IM ENGINE TEST BENCH $428 IM STAND FOR BENCH $2673 MKWIRE BENDER 775 MSK TRANSMITTER CASE $2800 HATORI HEADERS AND PIPES #601 10cc PIPE $ 3423 #401 75cc PIPE 2995 Headers fit YS OS EnVa Webbra OPS & Ross RETRACTS e pans available MK S60 S40 NOSE$ 1733 MAINS$ 2450 Shipping handling orders up $2000 add $195 $2001 $6000 add $360 over $5000 add $500 Except Kits loveraizedl add $700 engine orders add $300 California residents muac add 6/i% sales tax VISA end MasterCard ac cepted Add $165 COD International order welcome additional shipping charges will applied Send $100 Catalog Information RIC GOLDEN GATE HOBBIES PO Box 4412 Burligame CA 94010 10 em -6 pm PST Monday thru Friday 415-467-3170 San Francisco see products San Antonio Hobby Shop 415-941-1278 March 1985 47 WaltI Master Class-flier Bill Rutledge preparing fly Novice-pattern bIrd 1 Would believe competing Turn around Kaos 40 great ones keep right coming RI Two-time Nats Master Class champ Ron Chidgey fires up new Tar Baby Turnaround pattern flight Jim Doc Edwards assists Tar Baby very gracefuland Its tail-dragger RC Soaring Pruss Continued page 45 lashes team affected take lumps send scores wait see fared Its rather refreshing see event protesters could have field daybut instead modelers word form airmailed score sheet accepted never questioned So club would like competejust fun itin worldwide event straying too far own clubhouse get contact Pinellas Soaring Association Write Kale Harden 3184 Brunswick Circle Palm Harbor FL 33563 USA Mark Triebes Saratoga CA sent shot series own designs calls Mariah just case thought very large tree supporting Mariah its Mariah one-meter bird weighs 16 ounces very acrobatic ailerons elevator its functions designed flown slope Con struction very basic using balsa Airply covering MonoKote Lets s see now over past several months weve covered five-meter birds few fours lotsa threes some twos now next step obviously nometer bird Send best shots expert panel will determine best class Without doubt success ful cross country events 1984 Thousand Oaks Soaring Societys TOSS Western Great Race some things going site Taft synonymous Free Flight great contests area has miles miles nothing miles miles Thirteen teams entered Sailplanes cross section fine cross country flying machines Included Larry Jollys new design soon kitted Comet bird wing span nearly 15 feet Airfoil Eppler 205 fuselage fiberglass its large enough carry radio gear plus small lunch Geminis modified Sagitta XCs Merlyn several original designs stretched Gemini sported 12-foot wing Mike Bame-designed airfoil course goal-and-return totaling 20 miles six 13 teams finished keep score airfoils used reports TOSS president Chuck Griswold say Eppler 205 did well Eppler 374 did bettermake best Yes airfoil four-meter wing Sailplane designed three Cal Poly aeronautical engineering students won first place Norm Timbs Gary Ward Joe Wurts combined talents three beat comers plane called Silent Knight flown maximum FAI weight limit five kilograms 11 lb truly race abovenamed team flew its bird over 20-mile course 004443 28 seconds faster second-place team Art Ames Wayne Meredith Ken Pattie Sinclair TOSS Comet took Bob Goldie Keith Kin drick Trent McGee 005044 cover 20 miles Gemini good enough third place Larry Jolly minute 46 seconds behind Comet finished exactly minute ahead John Lewis Dick Madison Clarence Nikkel Vein Oldershaw Merlyn Sixth place went another TOSS team Percy Megginson Bret Don Northern Sagitta XC time 010448 As can tell times logged excitement want part next summer contact TOSS details Write Chuck Griswold TOSS President Thousand Oaks Soaring Society P0 Box 1955 Thousand Oaks CA 91360 meantime support USA/F3B team contest early side year time April Mike Reagan Mike Bame Steve Neu team manager Blame Rawdon will head Australia contribution will help five dollars contributed youll receive patch can wear show team support Whether youre weekend flier contest chaser benefit teams efforts Support Contributions can sent Ms Helen Olsen USA/F3B Fund-Raising Manager 8875 Oveida Plaza Westmin ster CA 92683 Good lift Dan Pruss 131 E Pennington Ln Plainfield IL 60544 RC Aerobatics/Van Putte Continued page 47 Wind has no effect whatsoever reactions aircraft flight turbu lence wind shear springs mind acknowledge existence refer wind article am referring constant-moving air mass Wind will affect aircraft relative ground will drift 100% wind aircraft carrier story originally youve already read itright dig out August 1984 issue read about Safety Comes First R VP gentlemen quite simple really except diehards perpetuate fallacies As said before does have way sticking needle critics doesnt Nevertheless hes got some great ideas debunk theories wind affects aircraft articles forward ed following delightful idea 1 28 Model Aviation Power Soar New Heights LT-50 GEAR MOTOR Leisures Gear Drive conversion 31 powerful LT-50 develops up 2 lbs static trhrust Gear Drive also features ball bearing Delrin/brass gearing glass loaded polycarbonate housing Send self-addressed stamped envelope catalog ap plication notes Leisure 11 DeerspringllrvinelCA 92714 h Wa,t REV-UP Props Average Inventory ODO Props! Over SO Sizes Events New 4heut Custom Tuned Engines Combat Racing Free Flight 6 Sport Cenepetitien Accessories 6 Parts Pyloa Raciag Pattera 6 Sport FF 6 V/C. Rage Inventory! Specialists Custom Ce 1D 6 Reed Engines Std 6 R/C Custom Parts Ce Engines Complete Inventory OF Indi v/dual Stick Parts Current 1D 6 Medalliea Engines New Parts Discontinued Co Engines Replica Orwick 23 29 *nd 6 Engines Ignition Engine Accessories Visa 6 MasterCard Welcome Detailed Drechure Send 75t Kustem KraFtsmanshp PO 5ev 26DP Laguna Sills CA 92S Ph 71130-5162 UUMIhEL Its Easier Land Engine Running OPSs SLA RC 40 comes OPS slide carb complements great engine performanc performance makes look good SCall Parts Peordeof eddIeC3E 91%de4t4 %tc PO Box 26247 New Orleans LA 70186 242-5967 Now dispel myth kinetic energy aircraft subject equal thrust force will vary between intowind flight downwind flight flight other direction simple ex periment will prove conclusively above myth after just myth Attend flying field equipped stopwatch plus pen paper enlist aid colleague act timekeeper recorder Proceed follows Fly safe height go way out downwind come full bore repeatable accuracy maximum airspeed ready call Now timekeeper fully close throttle same time command Now timekeeper starts watch fly straight level long possible Ignoring idling prop affects nothing experiment kinetic energy now models energy source Drag will dissipate energy causing airspeed progres sively reduced Eventually aircraft will stall seeing nose wing drop watch stopped dura lion level flight time recorded Next repeat procedure downwind repeat across wind both directions sequence directions flown no importance eventually check recorded figures will have surprising some experi ence finding recorded times equal plus minus human error little human error will creep such maintaining absolutely level flight greater accuracy procedure can repeated Now what happened false ly presumed additional kinetic energy flew downwind down wind ground speed certainly highest four runs timed durations level flight equal kinetic energy fact related earth surely downwind period level flight should have much longer into-wind Now great Id written Id have settled back very pleased effort Mr Salter goes say Another example debunk same myth personal experi ence have flown full-size Tiger Moth strong headwind backwards relative earth am sure am Now lets apply kinetic energy myth situation implies aircraft no kinetic energy minus quality should have fallen out sky does have way doesnt would like complete set what Len Salter sent mail selfaddressed stamped envelope SASE Id glad send about concludes column long came what sent let finish off idea sent Bill Kite Kings port TN Bill wrote club Tn Cities Aeromodelers Inc has club din ner picnic year looking change came up something called Pattern Poker works like take some playing cards ace through nine case Sportsman Novice Add some higher cards higher classes Pattern contestant draws six cards depending what draws assigned maneuvers contest six cards come classification flies examContinued page 132 DUAL PERSONAUTY TRAINER EMINIS BEAUTIFUL UPER CHAMP 2 LtEALERf DISTRIBUTOR INQUIRIES INVITED S 54 - 35 ENGINES HANNEL THE BEGINNERS KITTEN AND EXPERTS TIGER Revolutionary snap-on WIfl9 eliminates bolts rubber bands Complete kit $5495 dealer direct EMINI MODELS INC Box 1188 Passxc NJ 07055 March 1985 129 -T See Hobby Shop New Model Magic Products Model Magic Epoxy Plus 2 Part 8 Mm Use anywhere two part epoxy used 25% lighter Sandable Carveable Excellent Gap Filling Non Sagging Superior Strength Sands Carves Like Basswoodll 6 fI oz$895 Equal 00 over 8 oz regular epoxys See dealer firot write call Model Magk Podicts kic P0 Box 19754 SIPauL MN 55119 17151425-1197 PRECISION BALiICE m ALL DIRECi Heres equipment need give props very best balance--balance diredions Carefully crafted top grade materials BUBBLE BALANCER accomodates 3/161/4 9/32 prop holes Other sizes available special order Dealers invited $1795 AddSlSefer HOWARD 8 HUEBL SEPT 005 pennege hnnlling Mien 6%nnlnnvnnlleC0Dn 8ov52 Re 8 Menkono MN 06001 f THE COMPETITIONS VIEW HE WINDSONG What makes Windsong best plane have deadair lightlift gusting 25 MPH winds thermal contest What makes windsong best plane r have x-country race Some say 17 1 ct ratio clean solidcore wing no spoiler bays urb airflow Others say Eppler 214 airfoil combined exclusive fullspan camber changing o capability including elevator compensated 80 degree flaps 0 N reflexible ailerons fact design innovations contribute Windsongs totaldesign concept its unprecedented performance WITH THEWIND SONG THE WHOLE IS TRULY GREATER THANTHE SUM OF ITS PARTSo Windsong 19995 Camano 15905Pixy 14995 Send 2 stamps catalog $25 VHSvideo tape SW CAMANO DRIVE CAMANO ISLAND WA 98292] N RC Aerobatics/Van Putte Continued page 129 pie Novice classification ace equals takeoff two straight flight out five stall turn draws three addi tional cards what represent will selected next higher Pattern classification So total nine maneuvers scored effort allow equal com petition few fliers different levels example could Novice score higher Procedure Turn Expert Figure M / Rolls dont know answered question lot fun Incidentally invited club 20 miles away 16 contestants Novice won first place Sportsman sec ond Advanced flier third got entire thing over 2/2 hours started eating difficulty need two three decks cards little extra help processing two rounds flight schedule stayed same luck played little part Some drew maneuvers liked others hated draw thought might interested am sounds like fun good ideas out send along about some good pic tures too Ron Van Putte ill Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Scale/Wischers Continued page 49 some cases brought about because nose gear too short Bell Airacobra Kingcobra models having short nose gears ease problem tucking long retractable strut likely candidates treatment Ideally nose gear length should provide wing angle attack requires small amount rotation takeoff avoid damage long nose gear strut obliges pilot make landing mains nose-high position would typical prototype Minor changes main wheel loca tion fore aft trike-geared model sufficiently drastic seriously affect appearance true Scale viewpoint same small changes have magnified effect ground han dling amount control input needed transition ground alr Sport-type airplanes always tried place main wheel centers close behind models CG easy transition takeoff tail manually pushed downward ground supposed stay However arrangement caused crosswind taxiing problem mentioned previously Scale operation average A- A-scale model should have main wheel centers about /2 % rearward CG Careful attention nose gear strut length assures positive angle attack wing least 10 three wheels runway model can flown surface mini mum elevator control applied Douglas A-20G has about 40 angle attack measured wings chord line runway surface nose wheel carries about 5% models total weight Ground steering very positive Heavy up-elevator control needed certain landings main wheels first holding nose wheel above runway until mains make contact Homemade decals art decalco mania process transferring pic tures designs specially-prepared paper surface decorated instance Scale model airplane Insignia manufacturers logo small let ters numerals can painted inked blank decal paper Sources material Sig local decalprinting establishment 12 x 18 sheet listed Sig catalog 754 coated glue transparent film Using decal paper has great advantage over trying paint details directly models surfaces first attempt isnt satisfactory scrap paper can discarded no harm has come model favorite tool drawing decal paper draftsmans ruling SILICONE 10 foot coils TUBING ID 062 092 125us post S/coIl 235 265 325 54/COlL LARRY DODGE AERO INC 10210 1[LWATPD MN MflR2 n,.na LDHOODS Cereal ILD BLUE box Airplanes VONDE Fly Again Sesot Aprodotlen P40 Z5R0 -$500 -SAF FLITS MODELS Box 62M RoiIIe MI 48000 * SCALE DOCUMENTATION* SCALE DRAWINGSMODEL PLANS PHOTOS 1985 BOOKS EPLA-TECH INTERNATIONAL AIRPLANE CATALOG48500 MC KENZIE HWY $300VIDA 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