Radio Control Helicopters Walt Schoonard WE HAVE BEEN talking about Novice-Group maneuvers Inter mediate-Group II maneuvers now will take look Expert-Group III Free-Style experts will fly Group II select free-style maneuvers can three minutes including landing Again judges will looking quality quantity expert maneuvers have varying Kfactors determined complexity particular maneuvers will scored 0-10 K-factor used multiplier Consequently smart expert contestant will pick maneuvers can well three minutes far better get high score fairly good K-factor get low score high K-factor Above dont pick maneuver will wreck machine After will rounds contests good idea select maneuvers will naturally go next way can save valuable time having fly around get position Maneuvers segmental should have both segments nearly equal possible should done altitude first safe secondly judges can easily see maneuvers judge properly judges will looking smooth ness continuity experience diffi culty doing particular maneuver dont endanger someone machine order get maneuver completed Abort maneuver try another As practice contest practice calling out what maneuver going call out entry exit cannot talk judges better score same token wont give good score dont know what going expert free-style maneuv ers follows Group ThreeExpert Free-Style K-Factor l5360O hover tail 25~~36oO hover nose l53600 hover tail 450 low 25Stationary hover pilot circles 3600 around helicopter 15Hover 50 ft turn 1800 hover back 25Top hat Fly 20 ft forward climb 20 ft doing 3600 turn fly forward 20 ft descend doing 3600 turn fly forward 20 ft 15Chandelle Climbing 1800 direction change 20Constant heading loop entering bottom 50 ft diameter 20Constant heading loop entering top 50-ft diameter 30-Vertical eight Ascending constant heading loop followed descend ing constant loop 50-ft diameter segments 35Loop 35Roll 10Stall turn 15Stall turn ing 35Auto-rotation landing 15Landing This maneuver must start continued page 80 20 Model Aviation 3600 turn descendDon Rothman starting up engine Schiuter Ga zelle helicopter official flight during 1975 AMA Nats Official 60 Hinch behind great deal credit deserved scratch builders gave movement start especially still roll own Hubert Bitners scratch-built chopper helipad 1975 Nats iI Exhaust Extension Perfect scale other applications extension needed no muffler required unit has machined locating slot fit engines no adaptors needed Extension 2% long comes complete mounting hardware Three sizes small 15 25 engines medium 29 40 large 49 80 $450 Exhaust Manifolds Manifolds available two styles will work boats cars airplanes Both come three sizes small 15-25 engines medium 29-401 large 45-80 have un iversal mounting slot eliminate need adaptor Suggested retail price $495 Exhaust Throttle Throttle engine exhaust type throttle system comes three standard sizes Small 15-25 engines Medium 2940 Large 45-80 mounting slot el iminates need adaptors $695 special model exhaust throttle made OPS 40 60 engines using tuned pipe t149t shnwn 300cc fuel tank especially designed boating use gravity feed type fuel pickup located bottom tank Molded extremely fuel resistant plastic tank features twist top fast fueling Suggested retail price $225 Semco makes 280 accesso ries models Send 25d catalog of mufflers tools hardware accessories available Semco RC Helicopters/Schoonard continued page 20 least 10-ft altitude separate auto-rotation landing must part free-style selec tion Scale scale contestants will need pre sent following materials entry static judging published threeview drawings pictures published other wise pertaining color markings details better presentation better can judged static judging will cover follow ing areasmaximum 25 points Fuselage cockpit landing gear rotor sys tems craftmanship finish markings Scale contestants will fly same equip ment have static judged will fly following maneuvers A 15-second hover land B Constant heading figure-of-eight starting left land C 360-degree fly-around starting left land Five minutes flight time Scale winning points will sum best two flights plus static judging points scale maneuvers will judged 0-10 have K-factor 15 complete test rules will used 1976 Helicopter Na tionals see Competition News section [My address 2080 Sharon Rd Win ter Park FL 32789] RC Pylon/Lane continued page 19 wing skin per side total 12 sec tions Number wing core same wing skins start applying skins cores will get skins same sequence Okay Lets talk about cement can use wont melt foam use Best Test rubber cement similar Carters does dry out after about six months several model contact cements market job really up individuals preference Goldbergs Blue-Goo should available time read article what have heard cement should work very well tinted blue can see have foam cores skins completely covered cement problems Best Test since has no color Once decide what type cement going use sure does attack foam coat wing cores skins Set everything aside least 30 minutes unless cement instructions call less time before attempting apply skins cores waiting time allows thinner evaporate cement put skins cores too soon thinners will attack foam melt Now have scrap have waited long enough can put cores back core block cores sticking block So using core block jig apply wing skins proper numerical order After place skin core before apply next skins sure lay bead white glue epoxy edge sheeting get good tight glue joint between skins After have skinned cores check sure straight have proper twist wash-out called plans Put cores back core block let dry hour two Now ready either glue epoxy leading trailing edges tips place Sand everything down de sired shape cut aileron per plan join wings together epoxy Peri odically assemble wing panels check sure still have proper wash-out panel have changed twist panel back shape usually can until put first coat resin glass wing sure use 1 either celastic glass tape reinforce wing center joint dont tape center joint can guarantee wing will fail center section first second flight Well hope above information will help would like build foam have becn leery stuff really difficult might think first time it will probably take longer built-up wing Once have completed couple will find can put foam wing together couple hours New month will cover technique using K&Bs Super Poxy finishing system address 4477W 136th St Haw thorne CA 90250 CL Racing/Lee continued page 28 July 7 through July 12 event being organized Royal Netherlands Aero nautical Assoc along World Championships committee will held site Utrecht Model Aero Club events will Stunt Speed Team Race Last summer good fortune help Team Race team selection finals held weekend pre ceeding Nats Lake Charles re ported results team selections December issue Model Aviation Id like take remainder col umn try introduce people comprise team representa tives World Championships FAI Team Race first-place team qualified com posed two Californians Jed Kusik 80 Model Aviation Boat Fuel Tank
Edition: Model Aviation - 1976/08
Page Numbers: 20, 80
Radio Control Helicopters Walt Schoonard WE HAVE BEEN talking about Novice-Group maneuvers Inter mediate-Group II maneuvers now will take look Expert-Group III Free-Style experts will fly Group II select free-style maneuvers can three minutes including landing Again judges will looking quality quantity expert maneuvers have varying Kfactors determined complexity particular maneuvers will scored 0-10 K-factor used multiplier Consequently smart expert contestant will pick maneuvers can well three minutes far better get high score fairly good K-factor get low score high K-factor Above dont pick maneuver will wreck machine After will rounds contests good idea select maneuvers will naturally go next way can save valuable time having fly around get position Maneuvers segmental should have both segments nearly equal possible should done altitude first safe secondly judges can easily see maneuvers judge properly judges will looking smooth ness continuity experience diffi culty doing particular maneuver dont endanger someone machine order get maneuver completed Abort maneuver try another As practice contest practice calling out what maneuver going call out entry exit cannot talk judges better score same token wont give good score dont know what going expert free-style maneuv ers follows Group ThreeExpert Free-Style K-Factor l5360O hover tail 25~~36oO hover nose l53600 hover tail 450 low 25Stationary hover pilot circles 3600 around helicopter 15Hover 50 ft turn 1800 hover back 25Top hat Fly 20 ft forward climb 20 ft doing 3600 turn fly forward 20 ft descend doing 3600 turn fly forward 20 ft 15Chandelle Climbing 1800 direction change 20Constant heading loop entering bottom 50 ft diameter 20Constant heading loop entering top 50-ft diameter 30-Vertical eight Ascending constant heading loop followed descend ing constant loop 50-ft diameter segments 35Loop 35Roll 10Stall turn 15Stall turn ing 35Auto-rotation landing 15Landing This maneuver must start continued page 80 20 Model Aviation 3600 turn descendDon Rothman starting up engine Schiuter Ga zelle helicopter official flight during 1975 AMA Nats Official 60 Hinch behind great deal credit deserved scratch builders gave movement start especially still roll own Hubert Bitners scratch-built chopper helipad 1975 Nats iI Exhaust Extension Perfect scale other applications extension needed no muffler required unit has machined locating slot fit engines no adaptors needed Extension 2% long comes complete mounting hardware Three sizes small 15 25 engines medium 29 40 large 49 80 $450 Exhaust Manifolds Manifolds available two styles will work boats cars airplanes Both come three sizes small 15-25 engines medium 29-401 large 45-80 have un iversal mounting slot eliminate need adaptor Suggested retail price $495 Exhaust Throttle Throttle engine exhaust type throttle system comes three standard sizes Small 15-25 engines Medium 2940 Large 45-80 mounting slot el iminates need adaptors $695 special model exhaust throttle made OPS 40 60 engines using tuned pipe t149t shnwn 300cc fuel tank especially designed boating use gravity feed type fuel pickup located bottom tank Molded extremely fuel resistant plastic tank features twist top fast fueling Suggested retail price $225 Semco makes 280 accesso ries models Send 25d catalog of mufflers tools hardware accessories available Semco RC Helicopters/Schoonard continued page 20 least 10-ft altitude separate auto-rotation landing must part free-style selec tion Scale scale contestants will need pre sent following materials entry static judging published threeview drawings pictures published other wise pertaining color markings details better presentation better can judged static judging will cover follow ing areasmaximum 25 points Fuselage cockpit landing gear rotor sys tems craftmanship finish markings Scale contestants will fly same equip ment have static judged will fly following maneuvers A 15-second hover land B Constant heading figure-of-eight starting left land C 360-degree fly-around starting left land Five minutes flight time Scale winning points will sum best two flights plus static judging points scale maneuvers will judged 0-10 have K-factor 15 complete test rules will used 1976 Helicopter Na tionals see Competition News section [My address 2080 Sharon Rd Win ter Park FL 32789] RC Pylon/Lane continued page 19 wing skin per side total 12 sec tions Number wing core same wing skins start applying skins cores will get skins same sequence Okay Lets talk about cement can use wont melt foam use Best Test rubber cement similar Carters does dry out after about six months several model contact cements market job really up individuals preference Goldbergs Blue-Goo should available time read article what have heard cement should work very well tinted blue can see have foam cores skins completely covered cement problems Best Test since has no color Once decide what type cement going use sure does attack foam coat wing cores skins Set everything aside least 30 minutes unless cement instructions call less time before attempting apply skins cores waiting time allows thinner evaporate cement put skins cores too soon thinners will attack foam melt Now have scrap have waited long enough can put cores back core block cores sticking block So using core block jig apply wing skins proper numerical order After place skin core before apply next skins sure lay bead white glue epoxy edge sheeting get good tight glue joint between skins After have skinned cores check sure straight have proper twist wash-out called plans Put cores back core block let dry hour two Now ready either glue epoxy leading trailing edges tips place Sand everything down de sired shape cut aileron per plan join wings together epoxy Peri odically assemble wing panels check sure still have proper wash-out panel have changed twist panel back shape usually can until put first coat resin glass wing sure use 1 either celastic glass tape reinforce wing center joint dont tape center joint can guarantee wing will fail center section first second flight Well hope above information will help would like build foam have becn leery stuff really difficult might think first time it will probably take longer built-up wing Once have completed couple will find can put foam wing together couple hours New month will cover technique using K&Bs Super Poxy finishing system address 4477W 136th St Haw thorne CA 90250 CL Racing/Lee continued page 28 July 7 through July 12 event being organized Royal Netherlands Aero nautical Assoc along World Championships committee will held site Utrecht Model Aero Club events will Stunt Speed Team Race Last summer good fortune help Team Race team selection finals held weekend pre ceeding Nats Lake Charles re ported results team selections December issue Model Aviation Id like take remainder col umn try introduce people comprise team representa tives World Championships FAI Team Race first-place team qualified com posed two Californians Jed Kusik 80 Model Aviation Boat Fuel Tank