RC Turbo Sport

Developing Turbo Sport challenge author feels hes now onto something really neat lightweight Electric sport model small-field flying Turbo Sport conceived response design contest sponsored SGI Inc distributors Turbo Twin RC system chose enter division allowed removal equipment plastic housing no modifications circuits themselves resulting model has well received fellow modelers felt compelled share fun others possible first became aware Turbo RC system saw advertised Model Aviation package very low price especially considering features placed order promptly package arrived further impressed obvious quality equipment ease removing motors electronics airborne unit settled twin-engine configuration motors spaced well away center line provide some steering effect differential thrust Much modeling activity recent years has Free Flight events low-powered models began draw background help choose preliminary design details small Mabuchi motors used Turbo system very well made hut power obviously limited extent power thrust can increased adding cells flight battery tradeoffs terms increased weight reduced run time because increased current Based tables provided Turbo system chose three-cell 50 mAh battery limited power available made clear low wing loading would very desirable efficient flight fairly highaspect-ratio wing selected keep required power minimum reducing induced drag wing airfoil would have profound effects wing efficiency Free Flight experience pointed toward thin undercambered section best performance first wing laid out using airfoil successful rubber-powered model span 30 inches chord 35 inches dihedral layout borrowed same Free Flight model motors placed well outboard maximize turning effect running briefly motor time dimension pure estimate because lack experience single-engine flight situation usually avoided twins possible motors mounted pylons beneath wing keep propeller flow off wing much possible set forward place Center Gravity CG desired range Selecting best propeller turned March 1997 27 bit project itself test stand assembled measure static thrust rpm current voltage Since furnished props designed pushing small blimp around both forward backward did have twist help maximize thrust direction also seemed smaller props other Free Flight modelers successfully using projects similar Mabuchi motors first test runs made using small props results thrust 47 grams 11000 rpm current 410 mA next prop tested furnished Cox Tee Dee 010 engine prop clearly too much transistors receiver motor control large voltage drop across transistors rpm 5000 series runs made cutting little off Cox blade time very encouraging results Since resulting prop very blunt inefficient blades new prop designed cut basswood became flight design Thrust produced 75 grams 11500rpm current 360 mA prop prop 2411 inches diameter has 13 inches pitch Since model used principles very similar some earliest RC models power on/off rise/descend force arrangement follows what successful time CC set well forward 25% small stabilizer used long moment ann stab airfoil inverted help generate adequate nose-up force increase speed twin-fin arrangement used simplify strap-on stabilizer mounting final size fins determined flight testing pod boom fuselage lightest aerodynamically clean choice availablethere no controls run tail anywhere else design decisions made construction begun first version wing built 146 square balsa spars A6 balsa ribs Japanese tissue covering reinforced motor pylons A6 sheet given two coats Sig Lite Coat dope thinned 50 % wing weighed eight grams complete motor pylons stabilizer built similar fashion A6 square leading trailing edges 146 square spar 42 sheet ribs too covered Japanese tissue doped thin Lite Coat tailboom made rolled balsa tube ensure minimum weight made pod balsa sheet 1/32 sides top bottom 146 bulkheads Very light foam used nose block wing mounted four degrees incidence stabilizer mounted 00 incidence low pylon cut foam sheet receiver battery positioned pod achieve desired CG Type RC Sport Wingspan 295 inches projected Motors Mabuchi Batteries Three 50 mAh Sanyo Flying weight 46 grams Construction Built-up Covering 1/4-mil Mylar Turbo Sport will stay aloft nearly four minutes late-eveningFour alkaline D cells wired series charger Micro air Tailboom made drink strawsclips connect leads exiting Turbo Sport 28 Model Aviation 4Power limited care construction will yield fun model has more-than-adequate performance motors fastened pylons 1A6 double-stick foam adhesive tape fins cut thin foam sheet glued stabilizer tips strapped wing tail place thin rubber bands routed antenna alongside tailboom reduce drag headed small pasture begin flight testing first flying session started some hand glides double-check incidence CG settings result thin shim added under stabilizer trailing edge confidence begin powered flying first powered flight rather brief ended cracked wing spar still yielded plenty information Perhaps important fact plenty thrust Turbo Sport very stable other hand airplane did want turn expected twostick transmitter very challenging use fashion confusion Repairs made after some consideration cut down tops fins headed back out time Turbo Sport started out looking good chance start turn right motors shut down model landed against fence broken wing spars Repairs completed took Turbo Sport outside hung low tree limb run some range tests result double ground range allowing antenna hang straight down headed out neighborhood ballfield next flying session time real progress first flight yielded full lap around field climb about 30 feet although control sluggish still easily confused about converting up down two sticks left right turns After fresh charge little battery chopped another piece off fin launched again Turbo Sport climbed up 50 feet started cruising turns command finally landing nearby after several minutes smooth flight Now time begin program refinement get out new flying machine main part airframe giving trouble wing first spar design clearly too fragile tissue covering warped wing changes humidity found another airfoil looked promising Benedek B-6356 decided try cutting wing very light foam using new airfoil real disaster foam wing too flexible until put bunch surface bracing weight excessive Armed dismal experience went back laid out new balsa wing frame using Benedek airfoil wing covered -mil Mylar Flight testing resumed hand glides new wing very promising except problem yaw stability trimmed near stall cleared up very nicely installed narrow tape March 1997 29 single rubber band holds stabilizer position Fins cutThe motor leads routed through wing prior covering foam plates attached glue gunAdjust equipment location proper CG position per plan Original pod balsa can made foam plate Note Mount motors foam double-stick tape Basswood prop wing turbulator added improve yaw stability derived prop sold Tee Dee 010 glow engine T/T6ST/A TRAIILNO EDGE IfBALSA TBI WEB I T/T6LTBII I BETWEEN GRABSGEARS 11l'XOO\jIIIIIIIL] IJN]i__ IIIfLIII II'~IIIIIIII[i] T/TR BALSA TIPS T/TB SD SPARSY NOTE TOLTROTATOR NOTE GRON MOTOR PYLON 2/32 BALSA II TD4 PLYWOOD MOTOR MOONE T/TB BALOT H/DO 25 SHEET BALSA EGO TOP SORFACE TOWER SORTAEE LEADING E~OEIThMOONT MOTORS 2/30 50WITH FOAM DOOBLE-SIDED TAPE 2 RIB SI IEINO PATTERNS /32 ElI WOOD DR PIASTIE TN EDAM SHEET LOP ADO BOTTOMDOILNO IDOTID lEE II I POD SIDE PATTERN/4 7/TO FOAM SHEETL~iKi T/TTT EGAM SHEET BOIDHEADS EDE3 SHAPE NOSE EROM-LIGHT FOAM BLOOD 20 3D0039 EENTERPLASOC BLADE PROP HOLE O 039 EEN TED HOLE 3/TB BLADE PATTERN BASSWOOD 0GB SOT BLADES FROM PLASOC TOGORT EGP TILT O/L 20 TD LEFT WDOO PROP LAFOOT NOTE INVERTED STAB AIRFDIL HOLLOW PLASTIC STRAW TAIL BOOMSPLICE HERE T/TD SD BALSA EDONER STRINGERS ITURBO SPORT 0123456I II SIGNED & DRAWN BY DAVE RDBELEN SCALE ES CAD PLANS 11/5/96 ND FRIESTAD MODEL AVIATION MAGAZINE IR9P ALL RIGHTS RESERVEG T T OF T 0 0 0 CD 0 CD -o 5 CA 0 CD CD 0 CD Co BA TITWOOD TAB SIALS LiLI TTF LOAM MARL 2 T/TO BALSA 3 DETAIL 20 SIZE T/AA T/T NOT/B ROOND TOOTTIPICK BALSA turbulator near leading edge time inspiration set tail very large circle steady power circle trim real help Now could watch Turbo Sport climb high altitude hands-off practice turning skills gilding safe height above ground became convinced onto something really neat could keep model inside 120-foot-square field handle moderate breeze keep Turbo Sport aloft almost four minutes lateevening air became accomplished night flier using lights parking lot keep airplane view also found Turbo Sport could also work small thermals very effectively frequently staying up five six minutes CONSTRUCTION will assume building skills such can comfortably build lightweight stick-and-tissue model try building something like Nite 28 kit Peck-Polymers see feel about type structure construction used hard may different past projects general refer light medium wood am describing type wood Sig Mfg markets Contest Balsa 1/i6 x 3 x 36 sheet light wood weighs about 12 grams sheet medium will weigh 18-20 grams Thinner wood such 1/32 will weigh proportionately less personal choice adhesive cyanoacrylate CyA glue Wal-Mart called Quick-Tite Stabilizer This good place start just get warmed up trailing edge leading edge spar should cut medium wood ribs should come light stock Protect plan sheet waxed paper something similar clamp leading trailing edges place pins Glue ribs place using glue sparingly spar glued place now whole assembly lifted board sanded smooth Set aside now proceed wing Wing Make couple rib-slicing templates thin plywood plastic stock using patterns shown plans Make sure smooth Cut several pieces light /16 balsa sheet length wing rib Use patterns slice top-surface curve sheet use bottom-surface template make cut completes rib Repeat until have nice stack rib blanks small square needle file will cut spar notches cleanly quickly Remember cut clearance holes ribs motor leads will pass through Prepare /16 x p firm balsa trailing edge clamp place plan using thin shims maintain Ihts HAINIJY jig-built sail plane manufactured Czech Republic exacting standards Available Ready-To-Cover fully covered exciting colors As name suggests excellent hand launch glider responds light thermal conditions flying small slopes San Marcos Wingspan 150 cm 59 weight radio 75-8 oz Depending radio full up wing loading will considerably less 6 ozfft2 HANDY also available electric version blunt nose ready mount SPEED 400 motor 6x3 folding prop 7-cell 600 mAh pack getting up 3 4 climbs charge Price RTC $ 9600 fully covered model sells $ 11900 offering power plant electric HANDY well Talking about excitement pix TRIFFIK-400 70cm 275 span SPEED-400 pylon racer manufactured glass fiber carbon fiber epoxy motor 7-cell pack help transform little beauty very competitive racer experienced pilot Graupner manufactures carbonreinforced 5x5 CAM prop spinner winning combination carry plane prop motor combinations tune motor max rpm efficiency TRIFFIK-400 $ 15800 must see tnis planes excellent workmanship plane individually airbrushed unique exciting paint schemes Finish very very smooth minimum resistance drag mum airspeed ACT-i solid-state Piezo Gyro compatible Futaba RCD JR radios single-unit ACT-i manufactured Germany now well over 2000 gyros flying Europe ACT-i uses microprocessor calibrate piezo element very precisely calculates corrections required tail rotor servo digital design seems have solved drift problems found earlier analog gyro systems ACT-i very accurate lightning fast Weight 11 oz Current consumption 35 mA thus does require heavy-duty airborne battery Price $ 23900 Also available Heavy Duty HD version 07 oz superlightweight version electric helos See favorite dealer or.. order direct March 1997 33 2323-C Tamara Lane viarcos UA 619752-9330 new NHP V9 computer simulator practice flying takes another leap reality allowing custom configure on-screen mnway simulate local club field So can practice precision landings computer thatll make look like pro out field Want fly some new fields NHP has four choose Complete goal posts limbo under tents maneuver around tunnels test thumbs can adjust viewpoint field Add fact NHP simulator system allows use own transmitter fly incredible stable 10 different air planes 18 different helicopters custom-configure very own creation straight off drawing board youll find NHP far best choice RIC simulation NHP Real simulation unreal possibilities NHP producro exclusively diorrEored broage beRer RIO seeps nationwide Horizon Hobby Oisfrrburoro Inc 4105 Fierdorone Road Choorpaigo IL 61821 217 THy-HUrl SYSTEM REQUIREMENTS IBM coorpafible 486DX farrer PC 640K RUM yOU graphics adapror DOS 31 larer RIO 1e adapror coro VS program opgrade available vepararely rhose vHrb carrIer NHP vyorem airfoil Sand firm strip /32 square shape leading edge clamp place Glue ribs place tilting ones dihedral joint slightly inward dry unpin tip sections prop securely dihedral angle Glue leading trailing edges securely add top spars gluing go dry lift wing off board glue spar webs bottom spars Add bottom-surface filler pieces wingtips sand whole works smooth Covering You may want substitute tissue -mil Mylar weight difference rather small Mylar much stable changes humidity using Mylar paint coat adhesive parts frames want material stick recommend Balsarite Plastic Film Formula favorite covering tool MonoKote trim seal iron Its smaller regular iron easier handle shrink covering until have sealed down tightly Fins They can cut /32 balsa attached CyA believe better way bottoms foam plates excellent source light foam sheet resistant moisture coating Attach small hot-glue gun must have parts ready work quickly foam joints will have superior strength weight quite reasonable spread glue thin Fuselage After made rolled balsa tailboom discovered plastic straws McDonalds Burger King plug together neatly make superior tailboom strongly recommend option pod can balsa sheet foam cut plates suggest reinforcement /64 plywood dab epoxy hold piece round toothpick place Start gluing tailboom rear bulkheads add edge strips side plates ready glue side plates rear bulkheads add front bulkhead Glue top bottom sheet place now trim out nose piece very light foam block cut stabilizer mount /6 foam meat tray stuck hot glue stabilizer braces cut /&s plywood watch alignment no stab tilt please Glue small plug wood end boom glue piece toothpick Assembly time suggest mount motors some picturemounting foam tape sticky both sides Make necessary connections assemble receiver switch battery packageoutside fuselage use short length wire side battery through fuselage sides charging connections Slip gear pod now 34 Model Aviation Now own field THE BEST IN SCALE DE HAVILLAND MOSQUITO Epoxy Glass SMI Kit- 82 span- 60 Power-Blown up Brian Taylor plan Kit includes BLOWN UP Plan-Epoxy glass fiaselage-Epoxy Engine Nacels Canopy-Aluminum Spinners machine cut wing ribs 124 VERSION SOON call before buying Mosquito kit Model pictured built John Arand has flying California over 13 yeara CATALOGS TheBatm5cale5400 Nexus AircrsftA5P5500 Nexus Scale Drawinp55 0 RCMW Plans catalog350 VTH German catalog5S 0 PLEASE AD5300? Call information ajsd credit caid orders S2500O o Shipping BOB HOLMAN PLANS POBOX 741 SAN BERNARDINO CA 92402 909 885 3959 US plan Agent British magazines Brian Taylor Dennis Bryant Mick Reeves 9o 000 00 oCC -aBc 00 Cr 00 i -I C 0 u 0 C 0J iZ3 Cr - _- 0 NJ--0NJ-NJNJNJ I- --COS-0-0-0-0NJNJNJNJNJNJNJ 00 -- rC 000-0oC tg r0 O Cr0 COCrO 0NJCr0 4k -. 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Developing Turbo Sport challenge author feels hes now onto something really neat lightweight Electric sport model small-field flying Turbo Sport conceived response design contest sponsored SGI Inc distributors Turbo Twin RC system chose enter division allowed removal equipment plastic housing no modifications circuits themselves resulting model has well received fellow modelers felt compelled share fun others possible first became aware Turbo RC system saw advertised Model Aviation package very low price especially considering features placed order promptly package arrived further impressed obvious quality equipment ease removing motors electronics airborne unit settled twin-engine configuration motors spaced well away center line provide some steering effect differential thrust Much modeling activity recent years has Free Flight events low-powered models began draw background help choose preliminary design details small Mabuchi motors used Turbo system very well made hut power obviously limited extent power thrust can increased adding cells flight battery tradeoffs terms increased weight reduced run time because increased current Based tables provided Turbo system chose three-cell 50 mAh battery limited power available made clear low wing loading would very desirable efficient flight fairly highaspect-ratio wing selected keep required power minimum reducing induced drag wing airfoil would have profound effects wing efficiency Free Flight experience pointed toward thin undercambered section best performance first wing laid out using airfoil successful rubber-powered model span 30 inches chord 35 inches dihedral layout borrowed same Free Flight model motors placed well outboard maximize turning effect running briefly motor time dimension pure estimate because lack experience single-engine flight situation usually avoided twins possible motors mounted pylons beneath wing keep propeller flow off wing much possible set forward place Center Gravity CG desired range Selecting best propeller turned March 1997 27 bit project itself test stand assembled measure static thrust rpm current voltage Since furnished props designed pushing small blimp around both forward backward did have twist help maximize thrust direction also seemed smaller props other Free Flight modelers successfully using projects similar Mabuchi motors first test runs made using small props results thrust 47 grams 11000 rpm current 410 mA next prop tested furnished Cox Tee Dee 010 engine prop clearly too much transistors receiver motor control large voltage drop across transistors rpm 5000 series runs made cutting little off Cox blade time very encouraging results Since resulting prop very blunt inefficient blades new prop designed cut basswood became flight design Thrust produced 75 grams 11500rpm current 360 mA prop prop 2411 inches diameter has 13 inches pitch Since model used principles very similar some earliest RC models power on/off rise/descend force arrangement follows what successful time CC set well forward 25% small stabilizer used long moment ann stab airfoil inverted help generate adequate nose-up force increase speed twin-fin arrangement used simplify strap-on stabilizer mounting final size fins determined flight testing pod boom fuselage lightest aerodynamically clean choice availablethere no controls run tail anywhere else design decisions made construction begun first version wing built 146 square balsa spars A6 balsa ribs Japanese tissue covering reinforced motor pylons A6 sheet given two coats Sig Lite Coat dope thinned 50 % wing weighed eight grams complete motor pylons stabilizer built similar fashion A6 square leading trailing edges 146 square spar 42 sheet ribs too covered Japanese tissue doped thin Lite Coat tailboom made rolled balsa tube ensure minimum weight made pod balsa sheet 1/32 sides top bottom 146 bulkheads Very light foam used nose block wing mounted four degrees incidence stabilizer mounted 00 incidence low pylon cut foam sheet receiver battery positioned pod achieve desired CG Type RC Sport Wingspan 295 inches projected Motors Mabuchi Batteries Three 50 mAh Sanyo Flying weight 46 grams Construction Built-up Covering 1/4-mil Mylar Turbo Sport will stay aloft nearly four minutes late-eveningFour alkaline D cells wired series charger Micro air Tailboom made drink strawsclips connect leads exiting Turbo Sport 28 Model Aviation 4Power limited care construction will yield fun model has more-than-adequate performance motors fastened pylons 1A6 double-stick foam adhesive tape fins cut thin foam sheet glued stabilizer tips strapped wing tail place thin rubber bands routed antenna alongside tailboom reduce drag headed small pasture begin flight testing first flying session started some hand glides double-check incidence CG settings result thin shim added under stabilizer trailing edge confidence begin powered flying first powered flight rather brief ended cracked wing spar still yielded plenty information Perhaps important fact plenty thrust Turbo Sport very stable other hand airplane did want turn expected twostick transmitter very challenging use fashion confusion Repairs made after some consideration cut down tops fins headed back out time Turbo Sport started out looking good chance start turn right motors shut down model landed against fence broken wing spars Repairs completed took Turbo Sport outside hung low tree limb run some range tests result double ground range allowing antenna hang straight down headed out neighborhood ballfield next flying session time real progress first flight yielded full lap around field climb about 30 feet although control sluggish still easily confused about converting up down two sticks left right turns After fresh charge little battery chopped another piece off fin launched again Turbo Sport climbed up 50 feet started cruising turns command finally landing nearby after several minutes smooth flight Now time begin program refinement get out new flying machine main part airframe giving trouble wing first spar design clearly too fragile tissue covering warped wing changes humidity found another airfoil looked promising Benedek B-6356 decided try cutting wing very light foam using new airfoil real disaster foam wing too flexible until put bunch surface bracing weight excessive Armed dismal experience went back laid out new balsa wing frame using Benedek airfoil wing covered -mil Mylar Flight testing resumed hand glides new wing very promising except problem yaw stability trimmed near stall cleared up very nicely installed narrow tape March 1997 29 single rubber band holds stabilizer position Fins cutThe motor leads routed through wing prior covering foam plates attached glue gunAdjust equipment location proper CG position per plan Original pod balsa can made foam plate Note Mount motors foam double-stick tape Basswood prop wing turbulator added improve yaw stability derived prop sold Tee Dee 010 glow engine T/T6ST/A TRAIILNO EDGE IfBALSA TBI WEB I T/T6LTBII I BETWEEN GRABSGEARS 11l'XOO\jIIIIIIIL] IJN]i__ IIIfLIII II'~IIIIIIII[i] T/TR BALSA TIPS T/TB SD SPARSY NOTE TOLTROTATOR NOTE GRON MOTOR PYLON 2/32 BALSA II TD4 PLYWOOD MOTOR MOONE T/TB BALOT H/DO 25 SHEET BALSA EGO TOP SORFACE TOWER SORTAEE LEADING E~OEIThMOONT MOTORS 2/30 50WITH FOAM DOOBLE-SIDED TAPE 2 RIB SI IEINO PATTERNS /32 ElI WOOD DR PIASTIE TN EDAM SHEET LOP ADO BOTTOMDOILNO IDOTID lEE II I POD SIDE PATTERN/4 7/TO FOAM SHEETL~iKi T/TTT EGAM SHEET BOIDHEADS EDE3 SHAPE NOSE EROM-LIGHT FOAM BLOOD 20 3D0039 EENTERPLASOC BLADE PROP HOLE O 039 EEN TED HOLE 3/TB BLADE PATTERN BASSWOOD 0GB SOT BLADES FROM PLASOC TOGORT EGP TILT O/L 20 TD LEFT WDOO PROP LAFOOT NOTE INVERTED STAB AIRFDIL HOLLOW PLASTIC STRAW TAIL BOOMSPLICE HERE T/TD SD BALSA EDONER STRINGERS ITURBO SPORT 0123456I II SIGNED & DRAWN BY DAVE RDBELEN SCALE ES CAD PLANS 11/5/96 ND FRIESTAD MODEL AVIATION MAGAZINE IR9P ALL RIGHTS RESERVEG T T OF T 0 0 0 CD 0 CD -o 5 CA 0 CD CD 0 CD Co BA TITWOOD TAB SIALS LiLI TTF LOAM MARL 2 T/TO BALSA 3 DETAIL 20 SIZE T/AA T/T NOT/B ROOND TOOTTIPICK BALSA turbulator near leading edge time inspiration set tail very large circle steady power circle trim real help Now could watch Turbo Sport climb high altitude hands-off practice turning skills gilding safe height above ground became convinced onto something really neat could keep model inside 120-foot-square field handle moderate breeze keep Turbo Sport aloft almost four minutes lateevening air became accomplished night flier using lights parking lot keep airplane view also found Turbo Sport could also work small thermals very effectively frequently staying up five six minutes CONSTRUCTION will assume building skills such can comfortably build lightweight stick-and-tissue model try building something like Nite 28 kit Peck-Polymers see feel about type structure construction used hard may different past projects general refer light medium wood am describing type wood Sig Mfg markets Contest Balsa 1/i6 x 3 x 36 sheet light wood weighs about 12 grams sheet medium will weigh 18-20 grams Thinner wood such 1/32 will weigh proportionately less personal choice adhesive cyanoacrylate CyA glue Wal-Mart called Quick-Tite Stabilizer This good place start just get warmed up trailing edge leading edge spar should cut medium wood ribs should come light stock Protect plan sheet waxed paper something similar clamp leading trailing edges place pins Glue ribs place using glue sparingly spar glued place now whole assembly lifted board sanded smooth Set aside now proceed wing Wing Make couple rib-slicing templates thin plywood plastic stock using patterns shown plans Make sure smooth Cut several pieces light /16 balsa sheet length wing rib Use patterns slice top-surface curve sheet use bottom-surface template make cut completes rib Repeat until have nice stack rib blanks small square needle file will cut spar notches cleanly quickly Remember cut clearance holes ribs motor leads will pass through Prepare /16 x p firm balsa trailing edge clamp place plan using thin shims maintain Ihts HAINIJY jig-built sail plane manufactured Czech Republic exacting standards Available Ready-To-Cover fully covered exciting colors As name suggests excellent hand launch glider responds light thermal conditions flying small slopes San Marcos Wingspan 150 cm 59 weight radio 75-8 oz Depending radio full up wing loading will considerably less 6 ozfft2 HANDY also available electric version blunt nose ready mount SPEED 400 motor 6x3 folding prop 7-cell 600 mAh pack getting up 3 4 climbs charge Price RTC $ 9600 fully covered model sells $ 11900 offering power plant electric HANDY well Talking about excitement pix TRIFFIK-400 70cm 275 span SPEED-400 pylon racer manufactured glass fiber carbon fiber epoxy motor 7-cell pack help transform little beauty very competitive racer experienced pilot Graupner manufactures carbonreinforced 5x5 CAM prop spinner winning combination carry plane prop motor combinations tune motor max rpm efficiency TRIFFIK-400 $ 15800 must see tnis planes excellent workmanship plane individually airbrushed unique exciting paint schemes Finish very very smooth minimum resistance drag mum airspeed ACT-i solid-state Piezo Gyro compatible Futaba RCD JR radios single-unit ACT-i manufactured Germany now well over 2000 gyros flying Europe ACT-i uses microprocessor calibrate piezo element very precisely calculates corrections required tail rotor servo digital design seems have solved drift problems found earlier analog gyro systems ACT-i very accurate lightning fast Weight 11 oz Current consumption 35 mA thus does require heavy-duty airborne battery Price $ 23900 Also available Heavy Duty HD version 07 oz superlightweight version electric helos See favorite dealer or.. order direct March 1997 33 2323-C Tamara Lane viarcos UA 619752-9330 new NHP V9 computer simulator practice flying takes another leap reality allowing custom configure on-screen mnway simulate local club field So can practice precision landings computer thatll make look like pro out field Want fly some new fields NHP has four choose Complete goal posts limbo under tents maneuver around tunnels test thumbs can adjust viewpoint field Add fact NHP simulator system allows use own transmitter fly incredible stable 10 different air planes 18 different helicopters custom-configure very own creation straight off drawing board youll find NHP far best choice RIC simulation NHP Real simulation unreal possibilities NHP producro exclusively diorrEored broage beRer RIO seeps nationwide Horizon Hobby Oisfrrburoro Inc 4105 Fierdorone Road Choorpaigo IL 61821 217 THy-HUrl SYSTEM REQUIREMENTS IBM coorpafible 486DX farrer PC 640K RUM yOU graphics adapror DOS 31 larer RIO 1e adapror coro VS program opgrade available vepararely rhose vHrb carrIer NHP vyorem airfoil Sand firm strip /32 square shape leading edge clamp place Glue ribs place tilting ones dihedral joint slightly inward dry unpin tip sections prop securely dihedral angle Glue leading trailing edges securely add top spars gluing go dry lift wing off board glue spar webs bottom spars Add bottom-surface filler pieces wingtips sand whole works smooth Covering You may want substitute tissue -mil Mylar weight difference rather small Mylar much stable changes humidity using Mylar paint coat adhesive parts frames want material stick recommend Balsarite Plastic Film Formula favorite covering tool MonoKote trim seal iron Its smaller regular iron easier handle shrink covering until have sealed down tightly Fins They can cut /32 balsa attached CyA believe better way bottoms foam plates excellent source light foam sheet resistant moisture coating Attach small hot-glue gun must have parts ready work quickly foam joints will have superior strength weight quite reasonable spread glue thin Fuselage After made rolled balsa tailboom discovered plastic straws McDonalds Burger King plug together neatly make superior tailboom strongly recommend option pod can balsa sheet foam cut plates suggest reinforcement /64 plywood dab epoxy hold piece round toothpick place Start gluing tailboom rear bulkheads add edge strips side plates ready glue side plates rear bulkheads add front bulkhead Glue top bottom sheet place now trim out nose piece very light foam block cut stabilizer mount /6 foam meat tray stuck hot glue stabilizer braces cut /&s plywood watch alignment no stab tilt please Glue small plug wood end boom glue piece toothpick Assembly time suggest mount motors some picturemounting foam tape sticky both sides Make necessary connections assemble receiver switch battery packageoutside fuselage use short length wire side battery through fuselage sides charging connections Slip gear pod now 34 Model Aviation Now own field THE BEST IN SCALE DE HAVILLAND MOSQUITO Epoxy Glass SMI Kit- 82 span- 60 Power-Blown up Brian Taylor plan Kit includes BLOWN UP Plan-Epoxy glass fiaselage-Epoxy Engine Nacels Canopy-Aluminum Spinners machine cut wing ribs 124 VERSION SOON call before buying Mosquito kit Model pictured built John Arand has flying California over 13 yeara CATALOGS TheBatm5cale5400 Nexus AircrsftA5P5500 Nexus Scale Drawinp55 0 RCMW Plans catalog350 VTH German catalog5S 0 PLEASE AD5300? Call information ajsd credit caid orders S2500O o Shipping BOB HOLMAN PLANS POBOX 741 SAN BERNARDINO CA 92402 909 885 3959 US plan Agent British magazines Brian Taylor Dennis Bryant Mick Reeves 9o 000 00 oCC -aBc 00 Cr 00 i -I C 0 u 0 C 0J iZ3 Cr - _- 0 NJ--0NJ-NJNJNJ I- --COS-0-0-0-0NJNJNJNJNJNJNJ 00 -- rC 000-0oC tg r0 O Cr0 COCrO 0NJCr0 4k -. 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Developing Turbo Sport challenge author feels hes now onto something really neat lightweight Electric sport model small-field flying Turbo Sport conceived response design contest sponsored SGI Inc distributors Turbo Twin RC system chose enter division allowed removal equipment plastic housing no modifications circuits themselves resulting model has well received fellow modelers felt compelled share fun others possible first became aware Turbo RC system saw advertised Model Aviation package very low price especially considering features placed order promptly package arrived further impressed obvious quality equipment ease removing motors electronics airborne unit settled twin-engine configuration motors spaced well away center line provide some steering effect differential thrust Much modeling activity recent years has Free Flight events low-powered models began draw background help choose preliminary design details small Mabuchi motors used Turbo system very well made hut power obviously limited extent power thrust can increased adding cells flight battery tradeoffs terms increased weight reduced run time because increased current Based tables provided Turbo system chose three-cell 50 mAh battery limited power available made clear low wing loading would very desirable efficient flight fairly highaspect-ratio wing selected keep required power minimum reducing induced drag wing airfoil would have profound effects wing efficiency Free Flight experience pointed toward thin undercambered section best performance first wing laid out using airfoil successful rubber-powered model span 30 inches chord 35 inches dihedral layout borrowed same Free Flight model motors placed well outboard maximize turning effect running briefly motor time dimension pure estimate because lack experience single-engine flight situation usually avoided twins possible motors mounted pylons beneath wing keep propeller flow off wing much possible set forward place Center Gravity CG desired range Selecting best propeller turned March 1997 27 bit project itself test stand assembled measure static thrust rpm current voltage Since furnished props designed pushing small blimp around both forward backward did have twist help maximize thrust direction also seemed smaller props other Free Flight modelers successfully using projects similar Mabuchi motors first test runs made using small props results thrust 47 grams 11000 rpm current 410 mA next prop tested furnished Cox Tee Dee 010 engine prop clearly too much transistors receiver motor control large voltage drop across transistors rpm 5000 series runs made cutting little off Cox blade time very encouraging results Since resulting prop very blunt inefficient blades new prop designed cut basswood became flight design Thrust produced 75 grams 11500rpm current 360 mA prop prop 2411 inches diameter has 13 inches pitch Since model used principles very similar some earliest RC models power on/off rise/descend force arrangement follows what successful time CC set well forward 25% small stabilizer used long moment ann stab airfoil inverted help generate adequate nose-up force increase speed twin-fin arrangement used simplify strap-on stabilizer mounting final size fins determined flight testing pod boom fuselage lightest aerodynamically clean choice availablethere no controls run tail anywhere else design decisions made construction begun first version wing built 146 square balsa spars A6 balsa ribs Japanese tissue covering reinforced motor pylons A6 sheet given two coats Sig Lite Coat dope thinned 50 % wing weighed eight grams complete motor pylons stabilizer built similar fashion A6 square leading trailing edges 146 square spar 42 sheet ribs too covered Japanese tissue doped thin Lite Coat tailboom made rolled balsa tube ensure minimum weight made pod balsa sheet 1/32 sides top bottom 146 bulkheads Very light foam used nose block wing mounted four degrees incidence stabilizer mounted 00 incidence low pylon cut foam sheet receiver battery positioned pod achieve desired CG Type RC Sport Wingspan 295 inches projected Motors Mabuchi Batteries Three 50 mAh Sanyo Flying weight 46 grams Construction Built-up Covering 1/4-mil Mylar Turbo Sport will stay aloft nearly four minutes late-eveningFour alkaline D cells wired series charger Micro air Tailboom made drink strawsclips connect leads exiting Turbo Sport 28 Model Aviation 4Power limited care construction will yield fun model has more-than-adequate performance motors fastened pylons 1A6 double-stick foam adhesive tape fins cut thin foam sheet glued stabilizer tips strapped wing tail place thin rubber bands routed antenna alongside tailboom reduce drag headed small pasture begin flight testing first flying session started some hand glides double-check incidence CG settings result thin shim added under stabilizer trailing edge confidence begin powered flying first powered flight rather brief ended cracked wing spar still yielded plenty information Perhaps important fact plenty thrust Turbo Sport very stable other hand airplane did want turn expected twostick transmitter very challenging use fashion confusion Repairs made after some consideration cut down tops fins headed back out time Turbo Sport started out looking good chance start turn right motors shut down model landed against fence broken wing spars Repairs completed took Turbo Sport outside hung low tree limb run some range tests result double ground range allowing antenna hang straight down headed out neighborhood ballfield next flying session time real progress first flight yielded full lap around field climb about 30 feet although control sluggish still easily confused about converting up down two sticks left right turns After fresh charge little battery chopped another piece off fin launched again Turbo Sport climbed up 50 feet started cruising turns command finally landing nearby after several minutes smooth flight Now time begin program refinement get out new flying machine main part airframe giving trouble wing first spar design clearly too fragile tissue covering warped wing changes humidity found another airfoil looked promising Benedek B-6356 decided try cutting wing very light foam using new airfoil real disaster foam wing too flexible until put bunch surface bracing weight excessive Armed dismal experience went back laid out new balsa wing frame using Benedek airfoil wing covered -mil Mylar Flight testing resumed hand glides new wing very promising except problem yaw stability trimmed near stall cleared up very nicely installed narrow tape March 1997 29 single rubber band holds stabilizer position Fins cutThe motor leads routed through wing prior covering foam plates attached glue gunAdjust equipment location proper CG position per plan Original pod balsa can made foam plate Note Mount motors foam double-stick tape Basswood prop wing turbulator added improve yaw stability derived prop sold Tee Dee 010 glow engine T/T6ST/A TRAIILNO EDGE IfBALSA TBI WEB I T/T6LTBII I BETWEEN GRABSGEARS 11l'XOO\jIIIIIIIL] IJN]i__ IIIfLIII II'~IIIIIIII[i] T/TR BALSA TIPS T/TB SD SPARSY NOTE TOLTROTATOR NOTE GRON MOTOR PYLON 2/32 BALSA II TD4 PLYWOOD MOTOR MOONE T/TB BALOT H/DO 25 SHEET BALSA EGO TOP SORFACE TOWER SORTAEE LEADING E~OEIThMOONT MOTORS 2/30 50WITH FOAM DOOBLE-SIDED TAPE 2 RIB SI IEINO PATTERNS /32 ElI WOOD DR PIASTIE TN EDAM SHEET LOP ADO BOTTOMDOILNO IDOTID lEE II I POD SIDE PATTERN/4 7/TO FOAM SHEETL~iKi T/TTT EGAM SHEET BOIDHEADS EDE3 SHAPE NOSE EROM-LIGHT FOAM BLOOD 20 3D0039 EENTERPLASOC BLADE PROP HOLE O 039 EEN TED HOLE 3/TB BLADE PATTERN BASSWOOD 0GB SOT BLADES FROM PLASOC TOGORT EGP TILT O/L 20 TD LEFT WDOO PROP LAFOOT NOTE INVERTED STAB AIRFDIL HOLLOW PLASTIC STRAW TAIL BOOMSPLICE HERE T/TD SD BALSA EDONER STRINGERS ITURBO SPORT 0123456I II SIGNED & DRAWN BY DAVE RDBELEN SCALE ES CAD PLANS 11/5/96 ND FRIESTAD MODEL AVIATION MAGAZINE IR9P ALL RIGHTS RESERVEG T T OF T 0 0 0 CD 0 CD -o 5 CA 0 CD CD 0 CD Co BA TITWOOD TAB SIALS LiLI TTF LOAM MARL 2 T/TO BALSA 3 DETAIL 20 SIZE T/AA T/T NOT/B ROOND TOOTTIPICK BALSA turbulator near leading edge time inspiration set tail very large circle steady power circle trim real help Now could watch Turbo Sport climb high altitude hands-off practice turning skills gilding safe height above ground became convinced onto something really neat could keep model inside 120-foot-square field handle moderate breeze keep Turbo Sport aloft almost four minutes lateevening air became accomplished night flier using lights parking lot keep airplane view also found Turbo Sport could also work small thermals very effectively frequently staying up five six minutes CONSTRUCTION will assume building skills such can comfortably build lightweight stick-and-tissue model try building something like Nite 28 kit Peck-Polymers see feel about type structure construction used hard may different past projects general refer light medium wood am describing type wood Sig Mfg markets Contest Balsa 1/i6 x 3 x 36 sheet light wood weighs about 12 grams sheet medium will weigh 18-20 grams Thinner wood such 1/32 will weigh proportionately less personal choice adhesive cyanoacrylate CyA glue Wal-Mart called Quick-Tite Stabilizer This good place start just get warmed up trailing edge leading edge spar should cut medium wood ribs should come light stock Protect plan sheet waxed paper something similar clamp leading trailing edges place pins Glue ribs place using glue sparingly spar glued place now whole assembly lifted board sanded smooth Set aside now proceed wing Wing Make couple rib-slicing templates thin plywood plastic stock using patterns shown plans Make sure smooth Cut several pieces light /16 balsa sheet length wing rib Use patterns slice top-surface curve sheet use bottom-surface template make cut completes rib Repeat until have nice stack rib blanks small square needle file will cut spar notches cleanly quickly Remember cut clearance holes ribs motor leads will pass through Prepare /16 x p firm balsa trailing edge clamp place plan using thin shims maintain Ihts HAINIJY jig-built sail plane manufactured Czech Republic exacting standards Available Ready-To-Cover fully covered exciting colors As name suggests excellent hand launch glider responds light thermal conditions flying small slopes San Marcos Wingspan 150 cm 59 weight radio 75-8 oz Depending radio full up wing loading will considerably less 6 ozfft2 HANDY also available electric version blunt nose ready mount SPEED 400 motor 6x3 folding prop 7-cell 600 mAh pack getting up 3 4 climbs charge Price RTC $ 9600 fully covered model sells $ 11900 offering power plant electric HANDY well Talking about excitement pix TRIFFIK-400 70cm 275 span SPEED-400 pylon racer manufactured glass fiber carbon fiber epoxy motor 7-cell pack help transform little beauty very competitive racer experienced pilot Graupner manufactures carbonreinforced 5x5 CAM prop spinner winning combination carry plane prop motor combinations tune motor max rpm efficiency TRIFFIK-400 $ 15800 must see tnis planes excellent workmanship plane individually airbrushed unique exciting paint schemes Finish very very smooth minimum resistance drag mum airspeed ACT-i solid-state Piezo Gyro compatible Futaba RCD JR radios single-unit ACT-i manufactured Germany now well over 2000 gyros flying Europe ACT-i uses microprocessor calibrate piezo element very precisely calculates corrections required tail rotor servo digital design seems have solved drift problems found earlier analog gyro systems ACT-i very accurate lightning fast Weight 11 oz Current consumption 35 mA thus does require heavy-duty airborne battery Price $ 23900 Also available Heavy Duty HD version 07 oz superlightweight version electric helos See favorite dealer or.. order direct March 1997 33 2323-C Tamara Lane viarcos UA 619752-9330 new NHP V9 computer simulator practice flying takes another leap reality allowing custom configure on-screen mnway simulate local club field So can practice precision landings computer thatll make look like pro out field Want fly some new fields NHP has four choose Complete goal posts limbo under tents maneuver around tunnels test thumbs can adjust viewpoint field Add fact NHP simulator system allows use own transmitter fly incredible stable 10 different air planes 18 different helicopters custom-configure very own creation straight off drawing board youll find NHP far best choice RIC simulation NHP Real simulation unreal possibilities NHP producro exclusively diorrEored broage beRer RIO seeps nationwide Horizon Hobby Oisfrrburoro Inc 4105 Fierdorone Road Choorpaigo IL 61821 217 THy-HUrl SYSTEM REQUIREMENTS IBM coorpafible 486DX farrer PC 640K RUM yOU graphics adapror DOS 31 larer RIO 1e adapror coro VS program opgrade available vepararely rhose vHrb carrIer NHP vyorem airfoil Sand firm strip /32 square shape leading edge clamp place Glue ribs place tilting ones dihedral joint slightly inward dry unpin tip sections prop securely dihedral angle Glue leading trailing edges securely add top spars gluing go dry lift wing off board glue spar webs bottom spars Add bottom-surface filler pieces wingtips sand whole works smooth Covering You may want substitute tissue -mil Mylar weight difference rather small Mylar much stable changes humidity using Mylar paint coat adhesive parts frames want material stick recommend Balsarite Plastic Film Formula favorite covering tool MonoKote trim seal iron Its smaller regular iron easier handle shrink covering until have sealed down tightly Fins They can cut /32 balsa attached CyA believe better way bottoms foam plates excellent source light foam sheet resistant moisture coating Attach small hot-glue gun must have parts ready work quickly foam joints will have superior strength weight quite reasonable spread glue thin Fuselage After made rolled balsa tailboom discovered plastic straws McDonalds Burger King plug together neatly make superior tailboom strongly recommend option pod can balsa sheet foam cut plates suggest reinforcement /64 plywood dab epoxy hold piece round toothpick place Start gluing tailboom rear bulkheads add edge strips side plates ready glue side plates rear bulkheads add front bulkhead Glue top bottom sheet place now trim out nose piece very light foam block cut stabilizer mount /6 foam meat tray stuck hot glue stabilizer braces cut /&s plywood watch alignment no stab tilt please Glue small plug wood end boom glue piece toothpick Assembly time suggest mount motors some picturemounting foam tape sticky both sides Make necessary connections assemble receiver switch battery packageoutside fuselage use short length wire side battery through fuselage sides charging connections Slip gear pod now 34 Model Aviation Now own field THE BEST IN SCALE DE HAVILLAND MOSQUITO Epoxy Glass SMI Kit- 82 span- 60 Power-Blown up Brian Taylor plan Kit includes BLOWN UP Plan-Epoxy glass fiaselage-Epoxy Engine Nacels Canopy-Aluminum Spinners machine cut wing ribs 124 VERSION SOON call before buying Mosquito kit Model pictured built John Arand has flying California over 13 yeara CATALOGS TheBatm5cale5400 Nexus AircrsftA5P5500 Nexus Scale Drawinp55 0 RCMW Plans catalog350 VTH German catalog5S 0 PLEASE AD5300? Call information ajsd credit caid orders S2500O o Shipping BOB HOLMAN PLANS POBOX 741 SAN BERNARDINO CA 92402 909 885 3959 US plan Agent British magazines Brian Taylor Dennis Bryant Mick Reeves 9o 000 00 oCC -aBc 00 Cr 00 i -I C 0 u 0 C 0J iZ3 Cr - _- 0 NJ--0NJ-NJNJNJ I- --COS-0-0-0-0NJNJNJNJNJNJNJ 00 -- rC 000-0oC tg r0 O Cr0 COCrO 0NJCr0 4k -. 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