CMON lets fly 21 Sport Speed Its fun its easy its great competition So get off couch quit talking about it have looking event kids grandkids can compete togeth er easy competitive event easiest matter fact airplanes difficult build easy fly good engines readily available rel atively inexpensively going get youngster flying help him build profile job starter allowed competition dont come up old excuse need machine shop fly Speed 21 en gines usually ready go dont need make modift chrome parts dont need big secrets Youve talking about getting back Speed flying thinking about starting long enough Lets arent interested Speed readV0 0 j35 }..ICO 5 - 45 &610 -40K 4 t 4-0 26 AKESHI KUSUMOTOS CLASS MODEL FLOWN AT THE 1989 US NATS NOTE DRAWINGS NOT TO SCALE Akeshi Kusumoto newest AMA Class Speed modei 1989 AMA Nets en countered various difficuitles ciocked oniy 16065 mph 4th Open showed potentiai record-breaking speeds once aii bugs ironed out Akeshi has traveled Japan several times attend Nats has won pieced severai events iegend T-shirt appears Brown Speed team something ing column Lets start airplane rules state profile models allowed definition profile model printed CL General section rule book page 26 must fol lowed going start profile ver sion means slab fuselage sidemounted exposed engine doesn t mean can build sidewinder-type airplane can reinforce front fuselage can use spinner can use either metal bladder tank can use takeoff dolly fixed landing gear want good simple trainer young beginning flier build Scale Racer-type airplane two wheels new airplane going typical old-style Speed job other rules must follow model must symmetrical fuselage must centered wing within inch engine must mounted upright inverted regular aluminum magne sium pan can used Two-line controls man datory lead-outs must separated least two-tenths inch Fuel 10% nitro single-bladed props allowed solid stranded wire lines 016-in diameter 60 ft long wingspan 16 20 works quite well configuration can square-tipped ellip tical style prefer different shapes have negligible effect speeds turning What does have effect thick ness wing 20-in span A-in-thick wing gives five square inches frontal area reduce taper wing thickness /8 less tip prefer saw wing spanwise three pieces make easier carve grind grooves lead-outs go also use short piece %2 brass tubing wing tip holes reinforce tip lightweight fiberglass glue three pieces back together run piece wire back forth line pas sageways make sure open lead out wires also prefer using fully symmetrical airfoil airplane will groove very well way lifting airfoil necessary Excellent bass wood spruce wing available Craftsman Wood Service Build fuselage old basswoodcrutch-and-helmet-cowl method have materials make mold lay up fiberglass like durability fiberglass Continued page 188 84 Model Aviation Control Line Speed Glenn Lee 819 Mandrake Batavia IL 60510 Gienn Lees 21 Sport Speed modei has fuse lage top sheil moided fibergiass No cool ing air inlet Low-nitro fuel ram-air take enough inside see Rossi 21 mounted Nick Arpino magnesium speed pen Needle valve mounted behind engine Fuel tank pressure bladder MINI-ELECTRIC MINI POWER AT ITS BEST LIGHT WEIGHT S $1495 ngage disengage Free ocladed snapo onto motor ISY-lO 7 1 gear ratio Wheeing 19 grams NY-70R Same H'7t bat Disconnects Slide HY-70 as, Kv-42 Improved version HY-48 Apprc QUIET ANT START COST TEMSCHAERIES $2495EFC-599 Props Charge Cord aridLow coot Quick ChargEght Batteries Rs spacers etcl4 D type hattedes Ir $2795 FC-492 Remote Battery HolderIdeal accaratelyry VL Flight Batt0iy sf above add $350Above clrargVL Field box $3295 FLIGHT BATrERIES B-62 IHY-70 2 x 50 mA-Hr..$ 995 tery SJ-5 SwitchB-53 IHY-701 3 ii 50 mA-Hr 95 ractionsB33L lIY-42l 3 x t 10 mA-Hr 12P5 B-341 IHY421 4 ii 110 nJ~Hr 1595 B13L IHY-421 3 e iBO mA-Hr QIAI IUVA9i 155 naifr 45 grams1595 - r640ramo1295 very top column CL Speed/Lee Continued page 84 its lot work make mold Maybe will good item future column sure make stabilizer large enough will affect speed sure helps stabil ity stabs use 9-in span 3-in cen ter chord made out %-in very hard balsa Balsa stiffer basswood doesnt warp like plywood also prefer build V-shaped stab ie dihedral keep tips getting scarfed up landing pretty well covers airplane now lets look engine have modelers area running gas-powered RC cars RC boats go see what using engines several excellent 21s market have seen comparable speeds several different brands can find good-looking good-feeling used engine go ahead try Usually repairs needed new bearings maybe new piston get back condition buy new engine dont overload running big prop modem ABC alu minum piston running chromed brass liner RMcM engines built rev high rpm ,oflhIy fljPnr I 47443 PIPER TRI-PACER 2022 span Plans 5 HD PG Cowl 0 Partial kit 5 Alum bar stock machined wing strut fillings $4000 112 piece seti buy sell build Custom Craft Scale RIC Aircraft TRUE HAPPINESS IS BUILDING AND FLYING PIPER TRI-PACER Send check Carl V MIller 130 Yucca Drive Sedona AZ 86336 282-4810 need break-in will dam aged 10%-nitro fuel insist run ning use 7 x 4 6 x 6 prop still ex perimenting props seems 6- 6-in diameter 6-in pitch works best takes good prop pull two big wires around like fairly wide blade best speeds have 6 x 6 cut down fi berglass copy 7 x 6 Tornado have flown several brands 10%-nitro RC fuel seem run OK Since running low-nitro fuel must raise engines compression ratio right Wrong stock heads fine fact might go faster decrease compression using head gaskets various thicknesses Get few spare head gaskets fly Experiment little should find out what head clearance use dif ferent weather conditions butcher engine attempts porting polishing grinding other secret methods hop-up Fly several times first stock condition doesnt go fast think reasons biggestand almost secret proper sleeve-and-piston fit sleeve bore should round should tapered piston fits loose bottom stroke squeaky tight top best ABC en gines have squeaked top stroke should have clearance least 005 bottom sleeve about 002 in area exhaust bypass ports means 002-in difference between diameter piston inside diameter sleeve Dont try lap sleeve piston will ruin piston Brake hones can used Ill tell future columns make proper lap venturi intake restrictor unnecessary will gain speed removing using re mote needle valve mounted behind engine Its easy make saw file drills need construct out scrap block aluminum brass steel Use surgical tubing pressure fuel bladder will need little over ounce fuel about 30cc flight Ill show build takeoff dolly next column Some specialist suppliers Nick Arpino magnesium speed pans Craftsman Wood Ser vice hardwoods Nicks address 301 Wood Acres Rd East Patchogue NY 11772 Crafts mans address 1735 W Cortland Ct Addison IL 60101 responding advertisers mention read about ModelAviation CL Navy Carrier/Perry Continued page 85 tor pushrod outboard side fuselage long-span bellcrank pushrod wjll inboard side Enlarge lead-out holes ribs needed provide clearance extremes control line slider movement external bellcrank installation added extra rib extended center section sheet ing bellcrank mount bellcrank would completely nirrhnrrrt nf thv t LATHES FOR THE AVIATION MODELER UNIMAT 8 / MCwwAY 55 sriCOMPACTS E4uRArcANEwv assas UNIMAT PC 13041568-3538 CATALOG $100 Plus toll tree nunter orders & questions 188 Model Aviation $1795 er 7 leads Quick stor models $1395 02 toel erigine xnernui guiiurun iniuuniuii aiu fled movIng unit the fuselage instead having uuouuad seen author Dick Perrys installa tion solid pIece %2-ln plywood replaC es balsa sheeting thIs area Cut out fuselage clear bellcrank Note view underside wIng Continued page 190 Rubber ft EngIne Power Free FlIght Display Control Line Electric Power RIC Airplanes new Illustrated 32 page tabloid sIze catalog us ft Canada $100 Forelgh $300 Penn Valley Hobby Center 937-A W Main St Lanedele PA 19440 215- 3650770 ThE WIKLMAIK rho exlra large handle bends 118-1I4 coils 51 3Z-3/16 music wire Wire oeep eliminated ur ANTI-KREEP WIRE LOCKtm catalog also has hardware accessories JOM COMPANY 114 WashIngton Tar Dept Waukegan IL 60055
Edition: Model Aviation - 1990/06
Page Numbers: 84, 188
CMON lets fly 21 Sport Speed Its fun its easy its great competition So get off couch quit talking about it have looking event kids grandkids can compete togeth er easy competitive event easiest matter fact airplanes difficult build easy fly good engines readily available rel atively inexpensively going get youngster flying help him build profile job starter allowed competition dont come up old excuse need machine shop fly Speed 21 en gines usually ready go dont need make modift chrome parts dont need big secrets Youve talking about getting back Speed flying thinking about starting long enough Lets arent interested Speed readV0 0 j35 }..ICO 5 - 45 &610 -40K 4 t 4-0 26 AKESHI KUSUMOTOS CLASS MODEL FLOWN AT THE 1989 US NATS NOTE DRAWINGS NOT TO SCALE Akeshi Kusumoto newest AMA Class Speed modei 1989 AMA Nets en countered various difficuitles ciocked oniy 16065 mph 4th Open showed potentiai record-breaking speeds once aii bugs ironed out Akeshi has traveled Japan several times attend Nats has won pieced severai events iegend T-shirt appears Brown Speed team something ing column Lets start airplane rules state profile models allowed definition profile model printed CL General section rule book page 26 must fol lowed going start profile ver sion means slab fuselage sidemounted exposed engine doesn t mean can build sidewinder-type airplane can reinforce front fuselage can use spinner can use either metal bladder tank can use takeoff dolly fixed landing gear want good simple trainer young beginning flier build Scale Racer-type airplane two wheels new airplane going typical old-style Speed job other rules must follow model must symmetrical fuselage must centered wing within inch engine must mounted upright inverted regular aluminum magne sium pan can used Two-line controls man datory lead-outs must separated least two-tenths inch Fuel 10% nitro single-bladed props allowed solid stranded wire lines 016-in diameter 60 ft long wingspan 16 20 works quite well configuration can square-tipped ellip tical style prefer different shapes have negligible effect speeds turning What does have effect thick ness wing 20-in span A-in-thick wing gives five square inches frontal area reduce taper wing thickness /8 less tip prefer saw wing spanwise three pieces make easier carve grind grooves lead-outs go also use short piece %2 brass tubing wing tip holes reinforce tip lightweight fiberglass glue three pieces back together run piece wire back forth line pas sageways make sure open lead out wires also prefer using fully symmetrical airfoil airplane will groove very well way lifting airfoil necessary Excellent bass wood spruce wing available Craftsman Wood Service Build fuselage old basswoodcrutch-and-helmet-cowl method have materials make mold lay up fiberglass like durability fiberglass Continued page 188 84 Model Aviation Control Line Speed Glenn Lee 819 Mandrake Batavia IL 60510 Gienn Lees 21 Sport Speed modei has fuse lage top sheil moided fibergiass No cool ing air inlet Low-nitro fuel ram-air take enough inside see Rossi 21 mounted Nick Arpino magnesium speed pen Needle valve mounted behind engine Fuel tank pressure bladder MINI-ELECTRIC MINI POWER AT ITS BEST LIGHT WEIGHT S $1495 ngage disengage Free ocladed snapo onto motor ISY-lO 7 1 gear ratio Wheeing 19 grams NY-70R Same H'7t bat Disconnects Slide HY-70 as, Kv-42 Improved version HY-48 Apprc QUIET ANT START COST TEMSCHAERIES $2495EFC-599 Props Charge Cord aridLow coot Quick ChargEght Batteries Rs spacers etcl4 D type hattedes Ir $2795 FC-492 Remote Battery HolderIdeal accaratelyry VL Flight Batt0iy sf above add $350Above clrargVL Field box $3295 FLIGHT BATrERIES B-62 IHY-70 2 x 50 mA-Hr..$ 995 tery SJ-5 SwitchB-53 IHY-701 3 ii 50 mA-Hr 95 ractionsB33L lIY-42l 3 x t 10 mA-Hr 12P5 B-341 IHY421 4 ii 110 nJ~Hr 1595 B13L IHY-421 3 e iBO mA-Hr QIAI IUVA9i 155 naifr 45 grams1595 - r640ramo1295 very top column CL Speed/Lee Continued page 84 its lot work make mold Maybe will good item future column sure make stabilizer large enough will affect speed sure helps stabil ity stabs use 9-in span 3-in cen ter chord made out %-in very hard balsa Balsa stiffer basswood doesnt warp like plywood also prefer build V-shaped stab ie dihedral keep tips getting scarfed up landing pretty well covers airplane now lets look engine have modelers area running gas-powered RC cars RC boats go see what using engines several excellent 21s market have seen comparable speeds several different brands can find good-looking good-feeling used engine go ahead try Usually repairs needed new bearings maybe new piston get back condition buy new engine dont overload running big prop modem ABC alu minum piston running chromed brass liner RMcM engines built rev high rpm ,oflhIy fljPnr I 47443 PIPER TRI-PACER 2022 span Plans 5 HD PG Cowl 0 Partial kit 5 Alum bar stock machined wing strut fillings $4000 112 piece seti buy sell build Custom Craft Scale RIC Aircraft TRUE HAPPINESS IS BUILDING AND FLYING PIPER TRI-PACER Send check Carl V MIller 130 Yucca Drive Sedona AZ 86336 282-4810 need break-in will dam aged 10%-nitro fuel insist run ning use 7 x 4 6 x 6 prop still ex perimenting props seems 6- 6-in diameter 6-in pitch works best takes good prop pull two big wires around like fairly wide blade best speeds have 6 x 6 cut down fi berglass copy 7 x 6 Tornado have flown several brands 10%-nitro RC fuel seem run OK Since running low-nitro fuel must raise engines compression ratio right Wrong stock heads fine fact might go faster decrease compression using head gaskets various thicknesses Get few spare head gaskets fly Experiment little should find out what head clearance use dif ferent weather conditions butcher engine attempts porting polishing grinding other secret methods hop-up Fly several times first stock condition doesnt go fast think reasons biggestand almost secret proper sleeve-and-piston fit sleeve bore should round should tapered piston fits loose bottom stroke squeaky tight top best ABC en gines have squeaked top stroke should have clearance least 005 bottom sleeve about 002 in area exhaust bypass ports means 002-in difference between diameter piston inside diameter sleeve Dont try lap sleeve piston will ruin piston Brake hones can used Ill tell future columns make proper lap venturi intake restrictor unnecessary will gain speed removing using re mote needle valve mounted behind engine Its easy make saw file drills need construct out scrap block aluminum brass steel Use surgical tubing pressure fuel bladder will need little over ounce fuel about 30cc flight Ill show build takeoff dolly next column Some specialist suppliers Nick Arpino magnesium speed pans Craftsman Wood Ser vice hardwoods Nicks address 301 Wood Acres Rd East Patchogue NY 11772 Crafts mans address 1735 W Cortland Ct Addison IL 60101 responding advertisers mention read about ModelAviation CL Navy Carrier/Perry Continued page 85 tor pushrod outboard side fuselage long-span bellcrank pushrod wjll inboard side Enlarge lead-out holes ribs needed provide clearance extremes control line slider movement external bellcrank installation added extra rib extended center section sheet ing bellcrank mount bellcrank would completely nirrhnrrrt nf thv t LATHES FOR THE AVIATION MODELER UNIMAT 8 / MCwwAY 55 sriCOMPACTS E4uRArcANEwv assas UNIMAT PC 13041568-3538 CATALOG $100 Plus toll tree nunter orders & questions 188 Model Aviation $1795 er 7 leads Quick stor models $1395 02 toel erigine xnernui guiiurun iniuuniuii aiu fled movIng unit the fuselage instead having uuouuad seen author Dick Perrys installa tion solid pIece %2-ln plywood replaC es balsa sheeting thIs area Cut out fuselage clear bellcrank Note view underside wIng Continued page 190 Rubber ft EngIne Power Free FlIght Display Control Line Electric Power RIC Airplanes new Illustrated 32 page tabloid sIze catalog us ft Canada $100 Forelgh $300 Penn Valley Hobby Center 937-A W Main St Lanedele PA 19440 215- 3650770 ThE WIKLMAIK rho exlra large handle bends 118-1I4 coils 51 3Z-3/16 music wire Wire oeep eliminated ur ANTI-KREEP WIRE LOCKtm catalog also has hardware accessories JOM COMPANY 114 WashIngton Tar Dept Waukegan IL 60055