HAIL Champs thirteenth running annual SAM Champs will take place Salt Lake City Utah July 2425 26 Hosted year Salt Lake Antique Modelers SLAM SAM Chapter 18 eventwillbe headquartered Ramada Inn Contest Manager Lin Haslam has put together full slate Old Timer events addition standard categories champs will offer some excit ing special events Among previously offered compressed-air event sponsored Tim Banazak Danny Sheelds Twin-pusher class particular interest Slag Engine event spon sored engine specialist Mark Fechner Marks Model Engines 4456 W 3145 So Salt Lake City Utah 84120 Slag Engine event open engine both piston cylinder bore made aluminum Marks words AA engine opposed currently popular AeBeC engines Several old favorites Thor Genie Rogers Ram Buzz Syncro etc eligible model may either cabin pylon design meeting old-timer rules Mark offering trophies through five places Thor engine parts kit others put least official flight event intrigues you own appropriate engine Mark has limited number available Due short time involved may want call him 801 9683498 wonder special award getting engines started case may unfamiliar schedule SAM Champs meet runs Tuesday Wednesday Thursday may particular advantage threats Sunday service station closings becomes reality Region Four Collecto will held Monday July 23 headquarters motel Champs proper will kicked off Monday evening traditional bean feed Flying begins bright early Tuesday morning Saltaire Modelport 13 miles downtown Salt Lake City time one-flyone rule effect Wednes day evening has set aside annual SAM business meeting awards banquet Thursday evening will wrap up festivities Bring sun helmet canteen anticipated 90 100 degree heat ContactLin 3792 South Bannock Street Salt Lake City Utah 94120 See Nostalgia Some folks might say need event Old Timers pair Powerhouses Ray Hulce left Forster 99 Randy Ryan Ohlsson 60 side port Both ships flew CIA Old Timers WrIght-Paterson AFB last June Harry Murphy photo fun something can done increase interest bring new blood has basically good San Valeers MAC have published news letter Satellite set rules new activity Eligible designs must have pub lished kitted between close WWII December 1956 Harry Murphy CIA Informer would like expanded include January 1943 through VJ day 1945 era produced multitude engines ignition glow diesel eligible powerplants Nostalgia event addition San Valleers rules allow current production glow engines long have plain bearing crankshaft engine period low friction bearings would acceptable have Schnuerle porting ABC alumi num-bronze-chrome piston sleeve Also current manufacture Cox 010 through 051 engines permitted course models must altered structurally other substitution stronger materials may scaled up down DT systems allowed naturally limit flight allowed six-minute max Various engine runs permitted depending upon launch method may hand-launch rise-off-ground 3point vertical takeoff Some familiar designs eligible Nostalgia event include Civy Boy Fubar Ram Rod Zeek etc Also fine designs published Zaic yearbooks period sampling engines would include Atwood Dooling Johnson Fox OK Spitfire etc Nostalgia creating great deal CrnffinLedn, 12 August 1979 37 NK brand CM-S spark plug reworked model engine use See text details ulil Heuter new Demon powered bi 23 Old Timer contest Wright-Patterson AFB Unusually high pylon Harty Murphy plc 1938 BIll Plersen built Brown-powered cabin ship MAN plans ih tnis picture nas Deen refurbishedbut silk 1841 years old badly need replacementwith Enys 35 twochannel radio Hed like hear anyone has built design SCALE CLASCICS 7-4 Plans & Construction Manual CURTISS HAWK POESTINSON RELIANT SR9 Scala 54o Span $220 /o Scale 126 Span250 2Scala 83 Span 12 2Scal BA Span1810 1 Scale 4713Span jQ8O uS Scala 63 Span1280 CURTISS GOSHAWK P1100 2 Scale 83 SpatSf590 CURTISS GULFHAWK lA . 2Scal 63 Span S160O Scala 94/i Span S3OP pleas Add SISO P 00 Pstoead Ilandllog. 001500 US Add SOsMka eli PaymOOts tO Richard G Barron1213 Holly SprIng L Grand Blanc MIchIgan 46439 Sood 11cc COmplete I0t0atIc offset will help transition initiating left turn soon engine cuts will assist tilt left glide glide circle originally set right glide increase stabilizer tilt However may also necessary decrease wash-in stab tilt does make model turn right wash-in reduced readjust climb using right rudder required bank right climb pylon designs wash-out left main wing panel stabilizer tilt left glide turn wash-out becomes effec tive upwind due decreased speed stabilizer tilt trying overpower wing forces cant quite make fore increase stabilizer tilt left glide turn careful use too much tilt could cause model unstable glide turn Too much tilt would increase turn washed-out wing upset gust wind could cause dive left pylon designs no wash-in wash-out use left vertical fin rudder offset high-thrust-line designs stabilizer tilt enough keep model turning left right case may Also left rudder tab offsct may affecting turn speed increases downwind causing some wandering Increase tilt either left right turn case may Problem 7 Model grooves full engine run shallower angle like also makes about ht turn during full 12 seconds want least 1 1 turns transition good glide too fast nose down problem involves Lateral axis pylon models overall nosedown tendency caused insufficient de calage Increasing decalage de creasing positive angle incidence stabilizer will raise nose up climb glide decalage increased also increases tendency model turn right climb conversely decrease turn right left glide Therefore decreasing de calage will result increasing right turn climb desired ito 1 turns slow up sink rate glide Adjust glide turn stabilizer tilt Problem 8 Model grooves steep right climb transition perfect glide turn perfect occasional slight stall problem involves Lateral axis pylon designs high-thrust models easy problem cure however fliers fight cure Simply add little weight nose reduce stall Youd surprised alibis used keep adding weight weight will actually help model penetrate upwind improve glide sink rate Problem 9 Model grooves steeper climb want transition good glide perfect calm day climb pattern would alright However least bit increase wind could make model loop climb problem involves Lateral axis pylon designs high-thrust models too can easy problem cure again adding weight cure seems offensive Reduce decalage flatten climb add weight tail adjust glide decalage can reduced shims under leading edge stabilizer will bring nose down climb reduced decalage will speed up glide however added weight tail will restore perfect glide few grams added tail get glide adjusted perfectly wont add wing loading enough change glide hope above problems will give better insight adjusting new gener ation gas free-flight models mak ing adjustments mentioned above few dos donts also merit consideration adding incidence wing stabilizer dont use balsa wood shims Balsa wood compresses will change adjustment Use 1/64 1/32 1/16 plywood shims shims less 1/64 needed use brass shims Any auto parts store has brass shim stock various sizes vertical fin used offset instead rudder tab sure re key stabilizer fin stabilizer Again use hard woods metal engine mount used sure side thrust can added also adding down thrust example adding side thrust mount three mounting holes down thrust also added needed Re-drill mount four mounting holes dont use original center bottom hole mounting four holes can spaced side thrust needed dont get down thrust Use metal shims engine thrust adjust ments using metal mounts keep shim pressing plywood firewall use 020 aluminum spacer against firewall metal mount Insert metal shim between alu minum spacer mount Check DT line tension Too much tension can bow fuselage changing either de calage vertical fin rudder offset final thought Stand own decisions what adjustments make Its model decision dont let some bystander try con other adjustments against judgment Youve built design model things doesnt know about make mistake let decision Youll learn making own decisions sincerely hope information series will help make right decision continuously max dead air FF Old Timers/Haught continued page 37 interest Northwest well other areas us will no doubt pouring through magazine collec tions looking sure winner Square peg round hole Newly manu factured spark plugs 1/4 X 32 threadsize have available quite sometime up point new plugs have available 3/8 X 24 thread size options scarcer day old Champion V use adapter bushing smaller size plug suitable alternative available local small engine shop form Japanese NKG brand CM-6 chain saw 112 Model Aviation Af7 ASS/S 7w2k6rGff GRwZ4VC OAr ThrAe *V3 spark plug plug comes metric 10-mm size has longer reach Champion V thread size may modified chucking plug lathe drill press dressing threaded area down 375 inch holding fine cut mill file against threads plug turning critical operation should done accurately possible Next plug still held firmly chuck square up 3/8-24 thread die held die stock Use lathe tailstock drill press table accuracy run die onto plug hand cutting new thread size compensate extra length use two standard NKG spark plug washers Ohlsson 60 didnt know difference started easily performed same modified NKG original Champion V Engine Reworlc Some time ago men tioned would like hear others could provide engine rebuilding and/or rework Roger Mason 3439 W Michigan Avenue Phoenix Arizona 85023 AMA 160 MECA 051-1 has doing type work some time including glow engine conversion Roger also does restoration collectors Its spare time activity may take time Roger assures will done right Clarence Haugh Route 5 Box 16 Coeur dAlene ID 83814 hinges rest Stan came pretty close new record several occasions April 22 shattered flights 712 756 seconds previous Open Category II record set Bucky Servaites 9 years ago 95-ft-ceiling site Cleveland Stoys flights made Chicagos Mad ison Street Armory has 75-ft ceiling since floor raised few years ago success such endeavor certainly important achievement cant help wondering about effect will have sport Heretofore HLG has easiest events get good glider could built tenth time takes Stan build folders HLG has popular events now requires 50 hours build HLG will competitiVe popularity bound wane Should rules changed Undoubtedly others will try Stans ap proach time next ruleschange cycle rolls around will have invested considerable time effort folders arent likely very happy about having models out lawed have seen cases short-range personal goals have prevented nearly prevented rules changes best interests long-range goals sport Perhaps could stand have two sets HLG eventsone permitting folders other outlawing themat least awhile cut-off date folders say 1985 Both events could flown records CDs meet sponsors could choose other perhaps both contests would probably opt anti-folder event Well lot head-scratching done before gets sorted out Read rulebook lads have noticed three competition Ornithopter models literature correspondence cros ses desk meet present official AMA rules event Two have awarded official National Records three have fixed wing addition flapping wing violates rules quote part rule violated part wing fixed projected area flapping part shall less fixed part. el has wing restrictions apply independently wing wings shall substantially identical Free-Flight Hall Fame Awards National Free Flight Society NFFS through annual awards recognizes individuals have contributed outstand ingly development continuity free-flight model aviation activities through out world recipients 1975 F Duration/Meuser continued page 39 Mini Bath Tubby June issue could con ceivably used Stan elected use dynamic pressure air hold trigger locked position thread trigger held between fuselage thumb holds trigger locked position before during launch model released high velo city lift force small vane produces necessary force keep mechanism latched speed drops below 20 mphStan checked wind tunnel vane arm flips its rearward latched position fully forward position releasing wings Rubber bands stretched across COMPLETE THIS FORM AND ATTACH MAILING LABEL FROM RECENT ISSUE LET US KNOW WHERE YOU ARE GOIN move please let us know advancesix weeks re quired change address Attach current MA mailing label check appropriate box mail Subscription Dept. Model Aviation 815 Fifteenth St. NW. Washington DC. 20005 Check appropriate boxenclose payment C NEW SUBSCRIPTION C CHANGE OF ADDRESS Non-AMA subscription rates $1200 12 months Canada United States possession elsewhere $1400 NAME ADDRESS CITY/STATE _____________________________________________ZIP _______________ MODEL AVIATION 815 FIFTEENTH ST. NW. WASHINGTON DC 20005 August 1979 113 Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground Price $3995 kit per doUar bar em att GREATEST RIG BASIC TRAINER Design & Kit ALL TIME Ask over 25000 satisfied builders HRA Y dealers sold themSHALL WE SAY MORE Andeews Aircraft Model Co tee US Rte t& North St Topsijeld Mass 01983 887-8541
Edition: Model Aviation - 1979/08
Page Numbers: 37, 112, 113
HAIL Champs thirteenth running annual SAM Champs will take place Salt Lake City Utah July 2425 26 Hosted year Salt Lake Antique Modelers SLAM SAM Chapter 18 eventwillbe headquartered Ramada Inn Contest Manager Lin Haslam has put together full slate Old Timer events addition standard categories champs will offer some excit ing special events Among previously offered compressed-air event sponsored Tim Banazak Danny Sheelds Twin-pusher class particular interest Slag Engine event spon sored engine specialist Mark Fechner Marks Model Engines 4456 W 3145 So Salt Lake City Utah 84120 Slag Engine event open engine both piston cylinder bore made aluminum Marks words AA engine opposed currently popular AeBeC engines Several old favorites Thor Genie Rogers Ram Buzz Syncro etc eligible model may either cabin pylon design meeting old-timer rules Mark offering trophies through five places Thor engine parts kit others put least official flight event intrigues you own appropriate engine Mark has limited number available Due short time involved may want call him 801 9683498 wonder special award getting engines started case may unfamiliar schedule SAM Champs meet runs Tuesday Wednesday Thursday may particular advantage threats Sunday service station closings becomes reality Region Four Collecto will held Monday July 23 headquarters motel Champs proper will kicked off Monday evening traditional bean feed Flying begins bright early Tuesday morning Saltaire Modelport 13 miles downtown Salt Lake City time one-flyone rule effect Wednes day evening has set aside annual SAM business meeting awards banquet Thursday evening will wrap up festivities Bring sun helmet canteen anticipated 90 100 degree heat ContactLin 3792 South Bannock Street Salt Lake City Utah 94120 See Nostalgia Some folks might say need event Old Timers pair Powerhouses Ray Hulce left Forster 99 Randy Ryan Ohlsson 60 side port Both ships flew CIA Old Timers WrIght-Paterson AFB last June Harry Murphy photo fun something can done increase interest bring new blood has basically good San Valeers MAC have published news letter Satellite set rules new activity Eligible designs must have pub lished kitted between close WWII December 1956 Harry Murphy CIA Informer would like expanded include January 1943 through VJ day 1945 era produced multitude engines ignition glow diesel eligible powerplants Nostalgia event addition San Valleers rules allow current production glow engines long have plain bearing crankshaft engine period low friction bearings would acceptable have Schnuerle porting ABC alumi num-bronze-chrome piston sleeve Also current manufacture Cox 010 through 051 engines permitted course models must altered structurally other substitution stronger materials may scaled up down DT systems allowed naturally limit flight allowed six-minute max Various engine runs permitted depending upon launch method may hand-launch rise-off-ground 3point vertical takeoff Some familiar designs eligible Nostalgia event include Civy Boy Fubar Ram Rod Zeek etc Also fine designs published Zaic yearbooks period sampling engines would include Atwood Dooling Johnson Fox OK Spitfire etc Nostalgia creating great deal CrnffinLedn, 12 August 1979 37 NK brand CM-S spark plug reworked model engine use See text details ulil Heuter new Demon powered bi 23 Old Timer contest Wright-Patterson AFB Unusually high pylon Harty Murphy plc 1938 BIll Plersen built Brown-powered cabin ship MAN plans ih tnis picture nas Deen refurbishedbut silk 1841 years old badly need replacementwith Enys 35 twochannel radio Hed like hear anyone has built design SCALE CLASCICS 7-4 Plans & Construction Manual CURTISS HAWK POESTINSON RELIANT SR9 Scala 54o Span $220 /o Scale 126 Span250 2Scala 83 Span 12 2Scal BA Span1810 1 Scale 4713Span jQ8O uS Scala 63 Span1280 CURTISS GOSHAWK P1100 2 Scale 83 SpatSf590 CURTISS GULFHAWK lA . 2Scal 63 Span S160O Scala 94/i Span S3OP pleas Add SISO P 00 Pstoead Ilandllog. 001500 US Add SOsMka eli PaymOOts tO Richard G Barron1213 Holly SprIng L Grand Blanc MIchIgan 46439 Sood 11cc COmplete I0t0atIc offset will help transition initiating left turn soon engine cuts will assist tilt left glide glide circle originally set right glide increase stabilizer tilt However may also necessary decrease wash-in stab tilt does make model turn right wash-in reduced readjust climb using right rudder required bank right climb pylon designs wash-out left main wing panel stabilizer tilt left glide turn wash-out becomes effec tive upwind due decreased speed stabilizer tilt trying overpower wing forces cant quite make fore increase stabilizer tilt left glide turn careful use too much tilt could cause model unstable glide turn Too much tilt would increase turn washed-out wing upset gust wind could cause dive left pylon designs no wash-in wash-out use left vertical fin rudder offset high-thrust-line designs stabilizer tilt enough keep model turning left right case may Also left rudder tab offsct may affecting turn speed increases downwind causing some wandering Increase tilt either left right turn case may Problem 7 Model grooves full engine run shallower angle like also makes about ht turn during full 12 seconds want least 1 1 turns transition good glide too fast nose down problem involves Lateral axis pylon models overall nosedown tendency caused insufficient de calage Increasing decalage de creasing positive angle incidence stabilizer will raise nose up climb glide decalage increased also increases tendency model turn right climb conversely decrease turn right left glide Therefore decreasing de calage will result increasing right turn climb desired ito 1 turns slow up sink rate glide Adjust glide turn stabilizer tilt Problem 8 Model grooves steep right climb transition perfect glide turn perfect occasional slight stall problem involves Lateral axis pylon designs high-thrust models easy problem cure however fliers fight cure Simply add little weight nose reduce stall Youd surprised alibis used keep adding weight weight will actually help model penetrate upwind improve glide sink rate Problem 9 Model grooves steeper climb want transition good glide perfect calm day climb pattern would alright However least bit increase wind could make model loop climb problem involves Lateral axis pylon designs high-thrust models too can easy problem cure again adding weight cure seems offensive Reduce decalage flatten climb add weight tail adjust glide decalage can reduced shims under leading edge stabilizer will bring nose down climb reduced decalage will speed up glide however added weight tail will restore perfect glide few grams added tail get glide adjusted perfectly wont add wing loading enough change glide hope above problems will give better insight adjusting new gener ation gas free-flight models mak ing adjustments mentioned above few dos donts also merit consideration adding incidence wing stabilizer dont use balsa wood shims Balsa wood compresses will change adjustment Use 1/64 1/32 1/16 plywood shims shims less 1/64 needed use brass shims Any auto parts store has brass shim stock various sizes vertical fin used offset instead rudder tab sure re key stabilizer fin stabilizer Again use hard woods metal engine mount used sure side thrust can added also adding down thrust example adding side thrust mount three mounting holes down thrust also added needed Re-drill mount four mounting holes dont use original center bottom hole mounting four holes can spaced side thrust needed dont get down thrust Use metal shims engine thrust adjust ments using metal mounts keep shim pressing plywood firewall use 020 aluminum spacer against firewall metal mount Insert metal shim between alu minum spacer mount Check DT line tension Too much tension can bow fuselage changing either de calage vertical fin rudder offset final thought Stand own decisions what adjustments make Its model decision dont let some bystander try con other adjustments against judgment Youve built design model things doesnt know about make mistake let decision Youll learn making own decisions sincerely hope information series will help make right decision continuously max dead air FF Old Timers/Haught continued page 37 interest Northwest well other areas us will no doubt pouring through magazine collec tions looking sure winner Square peg round hole Newly manu factured spark plugs 1/4 X 32 threadsize have available quite sometime up point new plugs have available 3/8 X 24 thread size options scarcer day old Champion V use adapter bushing smaller size plug suitable alternative available local small engine shop form Japanese NKG brand CM-6 chain saw 112 Model Aviation Af7 ASS/S 7w2k6rGff GRwZ4VC OAr ThrAe *V3 spark plug plug comes metric 10-mm size has longer reach Champion V thread size may modified chucking plug lathe drill press dressing threaded area down 375 inch holding fine cut mill file against threads plug turning critical operation should done accurately possible Next plug still held firmly chuck square up 3/8-24 thread die held die stock Use lathe tailstock drill press table accuracy run die onto plug hand cutting new thread size compensate extra length use two standard NKG spark plug washers Ohlsson 60 didnt know difference started easily performed same modified NKG original Champion V Engine Reworlc Some time ago men tioned would like hear others could provide engine rebuilding and/or rework Roger Mason 3439 W Michigan Avenue Phoenix Arizona 85023 AMA 160 MECA 051-1 has doing type work some time including glow engine conversion Roger also does restoration collectors Its spare time activity may take time Roger assures will done right Clarence Haugh Route 5 Box 16 Coeur dAlene ID 83814 hinges rest Stan came pretty close new record several occasions April 22 shattered flights 712 756 seconds previous Open Category II record set Bucky Servaites 9 years ago 95-ft-ceiling site Cleveland Stoys flights made Chicagos Mad ison Street Armory has 75-ft ceiling since floor raised few years ago success such endeavor certainly important achievement cant help wondering about effect will have sport Heretofore HLG has easiest events get good glider could built tenth time takes Stan build folders HLG has popular events now requires 50 hours build HLG will competitiVe popularity bound wane Should rules changed Undoubtedly others will try Stans ap proach time next ruleschange cycle rolls around will have invested considerable time effort folders arent likely very happy about having models out lawed have seen cases short-range personal goals have prevented nearly prevented rules changes best interests long-range goals sport Perhaps could stand have two sets HLG eventsone permitting folders other outlawing themat least awhile cut-off date folders say 1985 Both events could flown records CDs meet sponsors could choose other perhaps both contests would probably opt anti-folder event Well lot head-scratching done before gets sorted out Read rulebook lads have noticed three competition Ornithopter models literature correspondence cros ses desk meet present official AMA rules event Two have awarded official National Records three have fixed wing addition flapping wing violates rules quote part rule violated part wing fixed projected area flapping part shall less fixed part. el has wing restrictions apply independently wing wings shall substantially identical Free-Flight Hall Fame Awards National Free Flight Society NFFS through annual awards recognizes individuals have contributed outstand ingly development continuity free-flight model aviation activities through out world recipients 1975 F Duration/Meuser continued page 39 Mini Bath Tubby June issue could con ceivably used Stan elected use dynamic pressure air hold trigger locked position thread trigger held between fuselage thumb holds trigger locked position before during launch model released high velo city lift force small vane produces necessary force keep mechanism latched speed drops below 20 mphStan checked wind tunnel vane arm flips its rearward latched position fully forward position releasing wings Rubber bands stretched across COMPLETE THIS FORM AND ATTACH MAILING LABEL FROM RECENT ISSUE LET US KNOW WHERE YOU ARE GOIN move please let us know advancesix weeks re quired change address Attach current MA mailing label check appropriate box mail Subscription Dept. Model Aviation 815 Fifteenth St. NW. Washington DC. 20005 Check appropriate boxenclose payment C NEW SUBSCRIPTION C CHANGE OF ADDRESS Non-AMA subscription rates $1200 12 months Canada United States possession elsewhere $1400 NAME ADDRESS CITY/STATE _____________________________________________ZIP _______________ MODEL AVIATION 815 FIFTEENTH ST. NW. WASHINGTON DC 20005 August 1979 113 Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground Price $3995 kit per doUar bar em att GREATEST RIG BASIC TRAINER Design & Kit ALL TIME Ask over 25000 satisfied builders HRA Y dealers sold themSHALL WE SAY MORE Andeews Aircraft Model Co tee US Rte t& North St Topsijeld Mass 01983 887-8541
Edition: Model Aviation - 1979/08
Page Numbers: 37, 112, 113
HAIL Champs thirteenth running annual SAM Champs will take place Salt Lake City Utah July 2425 26 Hosted year Salt Lake Antique Modelers SLAM SAM Chapter 18 eventwillbe headquartered Ramada Inn Contest Manager Lin Haslam has put together full slate Old Timer events addition standard categories champs will offer some excit ing special events Among previously offered compressed-air event sponsored Tim Banazak Danny Sheelds Twin-pusher class particular interest Slag Engine event spon sored engine specialist Mark Fechner Marks Model Engines 4456 W 3145 So Salt Lake City Utah 84120 Slag Engine event open engine both piston cylinder bore made aluminum Marks words AA engine opposed currently popular AeBeC engines Several old favorites Thor Genie Rogers Ram Buzz Syncro etc eligible model may either cabin pylon design meeting old-timer rules Mark offering trophies through five places Thor engine parts kit others put least official flight event intrigues you own appropriate engine Mark has limited number available Due short time involved may want call him 801 9683498 wonder special award getting engines started case may unfamiliar schedule SAM Champs meet runs Tuesday Wednesday Thursday may particular advantage threats Sunday service station closings becomes reality Region Four Collecto will held Monday July 23 headquarters motel Champs proper will kicked off Monday evening traditional bean feed Flying begins bright early Tuesday morning Saltaire Modelport 13 miles downtown Salt Lake City time one-flyone rule effect Wednes day evening has set aside annual SAM business meeting awards banquet Thursday evening will wrap up festivities Bring sun helmet canteen anticipated 90 100 degree heat ContactLin 3792 South Bannock Street Salt Lake City Utah 94120 See Nostalgia Some folks might say need event Old Timers pair Powerhouses Ray Hulce left Forster 99 Randy Ryan Ohlsson 60 side port Both ships flew CIA Old Timers WrIght-Paterson AFB last June Harry Murphy photo fun something can done increase interest bring new blood has basically good San Valeers MAC have published news letter Satellite set rules new activity Eligible designs must have pub lished kitted between close WWII December 1956 Harry Murphy CIA Informer would like expanded include January 1943 through VJ day 1945 era produced multitude engines ignition glow diesel eligible powerplants Nostalgia event addition San Valleers rules allow current production glow engines long have plain bearing crankshaft engine period low friction bearings would acceptable have Schnuerle porting ABC alumi num-bronze-chrome piston sleeve Also current manufacture Cox 010 through 051 engines permitted course models must altered structurally other substitution stronger materials may scaled up down DT systems allowed naturally limit flight allowed six-minute max Various engine runs permitted depending upon launch method may hand-launch rise-off-ground 3point vertical takeoff Some familiar designs eligible Nostalgia event include Civy Boy Fubar Ram Rod Zeek etc Also fine designs published Zaic yearbooks period sampling engines would include Atwood Dooling Johnson Fox OK Spitfire etc Nostalgia creating great deal CrnffinLedn, 12 August 1979 37 NK brand CM-S spark plug reworked model engine use See text details ulil Heuter new Demon powered bi 23 Old Timer contest Wright-Patterson AFB Unusually high pylon Harty Murphy plc 1938 BIll Plersen built Brown-powered cabin ship MAN plans ih tnis picture nas Deen refurbishedbut silk 1841 years old badly need replacementwith Enys 35 twochannel radio Hed like hear anyone has built design SCALE CLASCICS 7-4 Plans & Construction Manual CURTISS HAWK POESTINSON RELIANT SR9 Scala 54o Span $220 /o Scale 126 Span250 2Scala 83 Span 12 2Scal BA Span1810 1 Scale 4713Span jQ8O uS Scala 63 Span1280 CURTISS GOSHAWK P1100 2 Scale 83 SpatSf590 CURTISS GULFHAWK lA . 2Scal 63 Span S160O Scala 94/i Span S3OP pleas Add SISO P 00 Pstoead Ilandllog. 001500 US Add SOsMka eli PaymOOts tO Richard G Barron1213 Holly SprIng L Grand Blanc MIchIgan 46439 Sood 11cc COmplete I0t0atIc offset will help transition initiating left turn soon engine cuts will assist tilt left glide glide circle originally set right glide increase stabilizer tilt However may also necessary decrease wash-in stab tilt does make model turn right wash-in reduced readjust climb using right rudder required bank right climb pylon designs wash-out left main wing panel stabilizer tilt left glide turn wash-out becomes effec tive upwind due decreased speed stabilizer tilt trying overpower wing forces cant quite make fore increase stabilizer tilt left glide turn careful use too much tilt could cause model unstable glide turn Too much tilt would increase turn washed-out wing upset gust wind could cause dive left pylon designs no wash-in wash-out use left vertical fin rudder offset high-thrust-line designs stabilizer tilt enough keep model turning left right case may Also left rudder tab offsct may affecting turn speed increases downwind causing some wandering Increase tilt either left right turn case may Problem 7 Model grooves full engine run shallower angle like also makes about ht turn during full 12 seconds want least 1 1 turns transition good glide too fast nose down problem involves Lateral axis pylon models overall nosedown tendency caused insufficient de calage Increasing decalage de creasing positive angle incidence stabilizer will raise nose up climb glide decalage increased also increases tendency model turn right climb conversely decrease turn right left glide Therefore decreasing de calage will result increasing right turn climb desired ito 1 turns slow up sink rate glide Adjust glide turn stabilizer tilt Problem 8 Model grooves steep right climb transition perfect glide turn perfect occasional slight stall problem involves Lateral axis pylon designs high-thrust models easy problem cure however fliers fight cure Simply add little weight nose reduce stall Youd surprised alibis used keep adding weight weight will actually help model penetrate upwind improve glide sink rate Problem 9 Model grooves steeper climb want transition good glide perfect calm day climb pattern would alright However least bit increase wind could make model loop climb problem involves Lateral axis pylon designs high-thrust models too can easy problem cure again adding weight cure seems offensive Reduce decalage flatten climb add weight tail adjust glide decalage can reduced shims under leading edge stabilizer will bring nose down climb reduced decalage will speed up glide however added weight tail will restore perfect glide few grams added tail get glide adjusted perfectly wont add wing loading enough change glide hope above problems will give better insight adjusting new gener ation gas free-flight models mak ing adjustments mentioned above few dos donts also merit consideration adding incidence wing stabilizer dont use balsa wood shims Balsa wood compresses will change adjustment Use 1/64 1/32 1/16 plywood shims shims less 1/64 needed use brass shims Any auto parts store has brass shim stock various sizes vertical fin used offset instead rudder tab sure re key stabilizer fin stabilizer Again use hard woods metal engine mount used sure side thrust can added also adding down thrust example adding side thrust mount three mounting holes down thrust also added needed Re-drill mount four mounting holes dont use original center bottom hole mounting four holes can spaced side thrust needed dont get down thrust Use metal shims engine thrust adjust ments using metal mounts keep shim pressing plywood firewall use 020 aluminum spacer against firewall metal mount Insert metal shim between alu minum spacer mount Check DT line tension Too much tension can bow fuselage changing either de calage vertical fin rudder offset final thought Stand own decisions what adjustments make Its model decision dont let some bystander try con other adjustments against judgment Youve built design model things doesnt know about make mistake let decision Youll learn making own decisions sincerely hope information series will help make right decision continuously max dead air FF Old Timers/Haught continued page 37 interest Northwest well other areas us will no doubt pouring through magazine collec tions looking sure winner Square peg round hole Newly manu factured spark plugs 1/4 X 32 threadsize have available quite sometime up point new plugs have available 3/8 X 24 thread size options scarcer day old Champion V use adapter bushing smaller size plug suitable alternative available local small engine shop form Japanese NKG brand CM-6 chain saw 112 Model Aviation Af7 ASS/S 7w2k6rGff GRwZ4VC OAr ThrAe *V3 spark plug plug comes metric 10-mm size has longer reach Champion V thread size may modified chucking plug lathe drill press dressing threaded area down 375 inch holding fine cut mill file against threads plug turning critical operation should done accurately possible Next plug still held firmly chuck square up 3/8-24 thread die held die stock Use lathe tailstock drill press table accuracy run die onto plug hand cutting new thread size compensate extra length use two standard NKG spark plug washers Ohlsson 60 didnt know difference started easily performed same modified NKG original Champion V Engine Reworlc Some time ago men tioned would like hear others could provide engine rebuilding and/or rework Roger Mason 3439 W Michigan Avenue Phoenix Arizona 85023 AMA 160 MECA 051-1 has doing type work some time including glow engine conversion Roger also does restoration collectors Its spare time activity may take time Roger assures will done right Clarence Haugh Route 5 Box 16 Coeur dAlene ID 83814 hinges rest Stan came pretty close new record several occasions April 22 shattered flights 712 756 seconds previous Open Category II record set Bucky Servaites 9 years ago 95-ft-ceiling site Cleveland Stoys flights made Chicagos Mad ison Street Armory has 75-ft ceiling since floor raised few years ago success such endeavor certainly important achievement cant help wondering about effect will have sport Heretofore HLG has easiest events get good glider could built tenth time takes Stan build folders HLG has popular events now requires 50 hours build HLG will competitiVe popularity bound wane Should rules changed Undoubtedly others will try Stans ap proach time next ruleschange cycle rolls around will have invested considerable time effort folders arent likely very happy about having models out lawed have seen cases short-range personal goals have prevented nearly prevented rules changes best interests long-range goals sport Perhaps could stand have two sets HLG eventsone permitting folders other outlawing themat least awhile cut-off date folders say 1985 Both events could flown records CDs meet sponsors could choose other perhaps both contests would probably opt anti-folder event Well lot head-scratching done before gets sorted out Read rulebook lads have noticed three competition Ornithopter models literature correspondence cros ses desk meet present official AMA rules event Two have awarded official National Records three have fixed wing addition flapping wing violates rules quote part rule violated part wing fixed projected area flapping part shall less fixed part. el has wing restrictions apply independently wing wings shall substantially identical Free-Flight Hall Fame Awards National Free Flight Society NFFS through annual awards recognizes individuals have contributed outstand ingly development continuity free-flight model aviation activities through out world recipients 1975 F Duration/Meuser continued page 39 Mini Bath Tubby June issue could con ceivably used Stan elected use dynamic pressure air hold trigger locked position thread trigger held between fuselage thumb holds trigger locked position before during launch model released high velo city lift force small vane produces necessary force keep mechanism latched speed drops below 20 mphStan checked wind tunnel vane arm flips its rearward latched position fully forward position releasing wings Rubber bands stretched across COMPLETE THIS FORM AND ATTACH MAILING LABEL FROM RECENT ISSUE LET US KNOW WHERE YOU ARE GOIN move please let us know advancesix weeks re quired change address Attach current MA mailing label check appropriate box mail Subscription Dept. Model Aviation 815 Fifteenth St. NW. Washington DC. 20005 Check appropriate boxenclose payment C NEW SUBSCRIPTION C CHANGE OF ADDRESS Non-AMA subscription rates $1200 12 months Canada United States possession elsewhere $1400 NAME ADDRESS CITY/STATE _____________________________________________ZIP _______________ MODEL AVIATION 815 FIFTEENTH ST. NW. WASHINGTON DC 20005 August 1979 113 Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground Price $3995 kit per doUar bar em att GREATEST RIG BASIC TRAINER Design & Kit ALL TIME Ask over 25000 satisfied builders HRA Y dealers sold themSHALL WE SAY MORE Andeews Aircraft Model Co tee US Rte t& North St Topsijeld Mass 01983 887-8541