Giant Scale Bob Beckman III VACATION slide show Ive moaning fact havent able get activity year didnt make Toledo last spring pass up STARS rally Olean July make worse havent out local flying field year modeling has really suffering malnutrition finally managed break out rut did vengeance happy combination business little free time field itself large can drop one-half onequarter-mile flying site anywhere almost lose it makes ideal location Giant Scale other RC activities Some earliest Giant Scale activity took place Merwin Ranch IMAA Chapter Eagle Squadron has hosted affair last five six years Ken Runestrand rest gang have got down science now have just enough organization control make possible large group enjoy relaxed weekend fly ing companionship Over 150 aircraft showed up year particularly enjoy trips West Coast since have good friends out Some new friends weve made since getting Giant Scale some go back lived out Fifties first stopwas Santa Clara Bob Iris Morse Bob prolificand opinion Bob Morses 40-lb Skyraider parked L Bob Seigeikoffs Art Chester Jeep behind Seigeikof owns converted Greyhound busits now motor home outhouse trailer models Skyralder flyby R Handles like trainer time made possible Evelyn go Labor Day Giant Scale Fly-in Merwin Ranch premier flying sites country two favorite locations other STARS Rally site Olean NY Imagine can pool table about half-a-mile long quarter-mile wide Substitute dichondra grass green baize youve got flying site Merwin Ranch near Sacramento CA Some people might wondering such big patch just grass right midst some inten sively-farmed land country answer isnt just ordinary grass Its actually dichondra seed farm its largest Merwin familys agricultural efforts Would believe tomatoes Christmas trees also grass cultivated allowed go seed chemicals applied kill grass harming seed Huge vacuum cleaners suck up seed leave area ready reseeded another crop Only small portion field being harvested 56 Model Aviation Merwin Ranch flying site Saturday morning view looking opposite direc tion would have same except campers would have right Forest Edwards runs up fabulous four-cycle radial engine made Fleet bipe really performs powerhouse up front Engine featured last month bestGiant Scale designer planproducer Ive shown lot pictures designs past will continue future columns because hes friend because hes good Friday morning helped Bob load monster Skyraider van headed Sacramento way stopped lunch Rio Vista As Im writing TV news talking about whale went way up river Rio Vista area really Giant Scale few miles up levee road along river arrived Mer win Ranch Although Fly-in didnt ficially start until Saturday morning already quarter-mile campers motor homes lined up beside field end line one-to-one Cessna gives another idea size facility several times during weekend full-size lightplanes set down stayed awhile flying already started course aircraft caught attention immediately Laser 200 putting quite show Ive seen lot Laser models halfwaygood pilot look great air different though pilot very good thing trigued engine noiseor lack Obviously four-cycle engine beautiful quiet purr would yank big Laser straight up less commotion regular big bangers idling Now Ive seen four-cycle engines before know has lot interest last few years Up now interest has academic since Im hooked Giant Scale igni Continued page 147 Chuck Fullers Ryan PT22 literally glints morning sunlight Chuck used chrome MonoKate fuselage right can see some detailing Chuck notes flying wires functionalhe found out hard wayl f lies well February 1986 57 [DCO SKY DEVIL 65 Ignition Approxed 90 Day Warrants Twin Ball Bearing Crank Americas finest old-timer engine Originally designed Hassad & Havlik replica engine resonic tuning ensures continuous flow power through speed range Look out green goodbye red headT&Ds replica Sky Devil 65 $279 less coil cond & plug Calif residents add 6% sales tax ORD[R DIRCT T&D RESEARCH AssocIAr1s 6371 El Cajon Blvd Suite 115 San Diego CA 92115 Si FOR BROCHURE ALL PURPOSE FOAM CU1TER Hands Off Cut II $10250 plus $800 ship ft handl Assembled Model HANDS OFF CUT II unique device cutting high quality foam wing cores hands off also cuts both sides same time Most modelers will amazed high quality smooth surface will achieve using device plus added ad vantage having wait until friends can come around help however just foam wing cutter HANDS OFF also capable cutting precision foam components such fuselage sections cowls tail surfaces HANDS OFF available two ways 1 completely assembled easy store fold up box includes handy 40 inch bow blocking up foam 2 hardware package assemble own board HANDS OFF CUT II requires 24 volt variable output power supplyEspecially designed tapered wiagsl Dealers WantedHands Off Cut ii Hardware Pkg$8750 plus 53 ship ft hand 24 Volt Variable Output Power Supply$5250 plus $3 ship ft hand NORRAY PRODUCTS INC 5008 Sandbeach Road F~77] Wichita Falls TX 76310 Tel 81716924475 multimeters ohmmeter function will cause small voltage applied component under test thus small current will flow through fact ohmmeter worksit applies voltage reads resulting current scale marked indicate ohmic value being measured small test signal normally no consequence power system use very sig nificant used within solid state cir cuitsbut thats beyond scope months column Finally careful connect ohmmeter active circuit such battery running motorthe ohmmeter measuring unpowered circuits components oniy Failure heed ad visory may result instrument damage Now some examples uses Remember optically-coupled speed control discussion can fact verify true separation receiver motor circuits aid ohmmeter Select highest resistance range available zero instrument both receiver motor power system switches OFF mean OFF connect ohmmeter lead elec trical part receiver system battery terminal contact unused servo plug exposed connection charge plug will connect other ohmmeter lead electrical part motor circuit brush connection motor battery terminal will What should see meter isno move ment Infinity ohms complete isola tion receiver motor systems would case nonoptically-isolated controls resis tance very much less infinity would indicate meter depending exact connections made other extreme try measuring motor resistance Select lowest resistance range zero instrument Disconnect motor system connector connect test leads motor terminals What should have very low ohms reading depend ing motor Turn armature slow ly Youre likely find new low ohms reading new armature position demonstrates very low resistance motorand variability low value depending brush contact varia tion armature position prac tical purposes such low readings much value simply because small variable unreliable other hand very poor no brush contactor dead commutator segmentit will show up quite noticeably rather large swing ohmmeter youre set up may well try thing Select low volt age range multimeter spin motor armature fingers pointer should move up down zero volts Reverse meter leads brushes pointer motion will reverse what before spin ning motor generates voltage Yup typical DC permanent-magnet motor also generator just use backward turning instead having turn something windmilling prop does turns out characteristic basic essential way motors work first place thats another long story resistance examples above limit examplesextremes high low resistance fact wide resistance ranges available multimeters little value Electrics often open short continuity information needed in-between ranges quite useful however receivers transmitters other elec tronic assemblies resistances can cover open short limits values between simple household resistance can use get further ac quainted ohmmeter light bulb Unscrew bulb try measuring resistance touching meter leads base contact points Depending lamp rating youll measure values few ohms 100 watt size few hundred ohms nite lite size Finally fun ohmmeter demonstra tion Set ohmmeter highest range hold test leads fingers making contact leads should get large resistance reading Squeeze leadsthe resistance reading should decrease Moisten hands get lower reading See body conductorit has measurable resistance its open circuit Ever wonder about girl friends resistance Thats issue friends Heres wishing happy quiet winter landingsremember Electric just great cold weather otherwise turns glow fuel gooey sticky smelly mess Please forward questions com ments SASE please Bob Kopski 25 West End Dr Lansdale PA 19446 RC Giant Scale/Beckman Continued page 57 tion-type engines witness ing melding advantages both Giant Scale four-cycle engines first look Saito 27 cu four-cycle twin action Its far cry inexpensive converted chainsaw engines few years ago does look nice sound beautiful perform superbly Before weekend over got another introduction four-cycle multicylinder engines told last month about Forest Edwards five-cylinder beau ty After watching two engines per form Im really getting four-cycle bug things go well hope Big Banger articles next few months try concentrate four-cycle engines keep getting vision Sparrowhawk Edwards engine nose should really give scale performance Youve heard babble times about real value flying chance talk people make new friends renew old friendships weekend particularly valuable last category got talk old friend hadnt seen 30 years Back early Fifties privileged work fly learn Continued page 148 February 1986 147 RC greats time Alex Schneider Alex won Nationals tWree times ushered era multi-reed con trol systems Like us have time time Alex dropped out model ing some years ago Its addiction cant really kick forever though hes getting back swing things Giant Scale isnt anything new him models flying Fifties wingspans 714 nine feet perfect weekend may getting activity much would like I right Correction time December issue photo got credited mistake insightful character study George Priveteer actually taken STARS member Ed Bush STARS Rally last July Bob Beckman 8248 Holly Grove Ct Manassas VA 22110 RC Pylon Racing/Hager Continued page 58 4 When operating TP/TPM recommended standardize fly ing setup respect fuel especially nitro content props glow plug fly ing course can compensate weather changes changing prop length TP/TPM As air den sity drops may have lengthen TP/TPM reduce prop load crease nitro compensate much change needed product experience Just remember no nitro allowed F3D Pylon 5 An alternate mounting method slide TP/TPM large-diameter mini-pipe such made K&B Prather Products Use high-tempera ture RTV red color sealant made GE Dow secure TP/TPM mini-pipe should also use silicone coupler seal junction between TP/TPM mini-pipe mini-pipe-TP/TPM assembly mounted engine via exhaust manifold 0-ring provide extra mounting insurance using two music wire hooks spring retainer secured mini-pipe stretched around engine cylinder disadvantage method pipe length relatively fixed cannot optimized weather conditions fuel prop load However excellent economical mounting methodespecially have known pipe length couple mini-pipes lying around ENGINE MODIFICATION best performance increase TP/TPM will result optimizing engine device Some engines per form better initially TP/TPM others will show small perfor mance gain stock configuration several engine modifications needed realize maximum performance TP/TPM 1 first modification lower compression ratio adding head shims gaskets account supercharging effect provided TP/TPM deck clearance generally should less 010 inches instances Recommended deck clear ances 012-018 range have some nitro fuel Blowing plugs running hot etc sure sign too high compression ratio Ideally should increase combustion chamber volume retain deck clearance about 012 2 If have access lathe good machinist make up new combus tion chamber deep bowl highroof configuration see what Im talk ing about locate ducted fan pilot uses K&B 75 engine longreach combustion chamber part no 9157 head shape will reduce detona tion generally improve plug life over stock head 3 While subject plugs strongly recommend both OPS RC 300 Rossi R-7 R-8 plugs Continued page 150 MFG OF NISTAETER $2995 Charger PLEASE SPECIFY WHICH CHARGER WHEN ORDERING TORK-STARTER revolutionary concept power 1 glow plugs model cars boats air planes using glow fuel engines TORK STARTERITMI has steel wrench strong enough reduce compression easier starting ft supplies pow dolag comes new C/b charger has LED indicate unit charging also has removable T handle can used Torque amplifier Over 50 consecutive starts full charge rechargeable hundreds times Clips onto plug positive connection Send ad along pre-payment receive free shipping handlino YORK-STARTER $2995 Charger 11 OV 220V 1 2V Fast Charter $2095 Without Charger CHARGERS $1295 Charger Only Ii 1OV 220V 12V Fast Charger 301 464-2260 148 Model Aviation ProTechTor STRONG METAL FRAME THERMO MOLDED SHELL FILLED WITH SOFT FOAM GREAT GIFT 951255 RC AIRPLANES BOATS CARS CAMERAS ETC Transmitter Case PRICE $35 Includes shipping Con USA Alaska & Hawaii add $2 CA Res add 6% tax OTHER PRODUCTS COMPUTER DISK CASE LOMAR CLAMP building tool PROMOUNT machined engine mounts MC SASE FOR FREE INFODEALEARS INVITED BERGERON ENTERPRISES 443 ROBERTA LLERTON CA 92632 12421 Ransom Dr. Glenn Dale MD 20769 L
Edition: Model Aviation - 1986/02
Page Numbers: 56, 57, 147, 148
Edition: Model Aviation - 1986/02
Page Numbers: 56, 57, 147, 148
Giant Scale Bob Beckman III VACATION slide show Ive moaning fact havent able get activity year didnt make Toledo last spring pass up STARS rally Olean July make worse havent out local flying field year modeling has really suffering malnutrition finally managed break out rut did vengeance happy combination business little free time field itself large can drop one-half onequarter-mile flying site anywhere almost lose it makes ideal location Giant Scale other RC activities Some earliest Giant Scale activity took place Merwin Ranch IMAA Chapter Eagle Squadron has hosted affair last five six years Ken Runestrand rest gang have got down science now have just enough organization control make possible large group enjoy relaxed weekend fly ing companionship Over 150 aircraft showed up year particularly enjoy trips West Coast since have good friends out Some new friends weve made since getting Giant Scale some go back lived out Fifties first stopwas Santa Clara Bob Iris Morse Bob prolificand opinion Bob Morses 40-lb Skyraider parked L Bob Seigeikoffs Art Chester Jeep behind Seigeikof owns converted Greyhound busits now motor home outhouse trailer models Skyralder flyby R Handles like trainer time made possible Evelyn go Labor Day Giant Scale Fly-in Merwin Ranch premier flying sites country two favorite locations other STARS Rally site Olean NY Imagine can pool table about half-a-mile long quarter-mile wide Substitute dichondra grass green baize youve got flying site Merwin Ranch near Sacramento CA Some people might wondering such big patch just grass right midst some inten sively-farmed land country answer isnt just ordinary grass Its actually dichondra seed farm its largest Merwin familys agricultural efforts Would believe tomatoes Christmas trees also grass cultivated allowed go seed chemicals applied kill grass harming seed Huge vacuum cleaners suck up seed leave area ready reseeded another crop Only small portion field being harvested 56 Model Aviation Merwin Ranch flying site Saturday morning view looking opposite direc tion would have same except campers would have right Forest Edwards runs up fabulous four-cycle radial engine made Fleet bipe really performs powerhouse up front Engine featured last month bestGiant Scale designer planproducer Ive shown lot pictures designs past will continue future columns because hes friend because hes good Friday morning helped Bob load monster Skyraider van headed Sacramento way stopped lunch Rio Vista As Im writing TV news talking about whale went way up river Rio Vista area really Giant Scale few miles up levee road along river arrived Mer win Ranch Although Fly-in didnt ficially start until Saturday morning already quarter-mile campers motor homes lined up beside field end line one-to-one Cessna gives another idea size facility several times during weekend full-size lightplanes set down stayed awhile flying already started course aircraft caught attention immediately Laser 200 putting quite show Ive seen lot Laser models halfwaygood pilot look great air different though pilot very good thing trigued engine noiseor lack Obviously four-cycle engine beautiful quiet purr would yank big Laser straight up less commotion regular big bangers idling Now Ive seen four-cycle engines before know has lot interest last few years Up now interest has academic since Im hooked Giant Scale igni Continued page 147 Chuck Fullers Ryan PT22 literally glints morning sunlight Chuck used chrome MonoKate fuselage right can see some detailing Chuck notes flying wires functionalhe found out hard wayl f lies well February 1986 57 [DCO SKY DEVIL 65 Ignition Approxed 90 Day Warrants Twin Ball Bearing Crank Americas finest old-timer engine Originally designed Hassad & Havlik replica engine resonic tuning ensures continuous flow power through speed range Look out green goodbye red headT&Ds replica Sky Devil 65 $279 less coil cond & plug Calif residents add 6% sales tax ORD[R DIRCT T&D RESEARCH AssocIAr1s 6371 El Cajon Blvd Suite 115 San Diego CA 92115 Si FOR BROCHURE ALL PURPOSE FOAM CU1TER Hands Off Cut II $10250 plus $800 ship ft handl Assembled Model HANDS OFF CUT II unique device cutting high quality foam wing cores hands off also cuts both sides same time Most modelers will amazed high quality smooth surface will achieve using device plus added ad vantage having wait until friends can come around help however just foam wing cutter HANDS OFF also capable cutting precision foam components such fuselage sections cowls tail surfaces HANDS OFF available two ways 1 completely assembled easy store fold up box includes handy 40 inch bow blocking up foam 2 hardware package assemble own board HANDS OFF CUT II requires 24 volt variable output power supplyEspecially designed tapered wiagsl Dealers WantedHands Off Cut ii Hardware Pkg$8750 plus 53 ship ft hand 24 Volt Variable Output Power Supply$5250 plus $3 ship ft hand NORRAY PRODUCTS INC 5008 Sandbeach Road F~77] Wichita Falls TX 76310 Tel 81716924475 multimeters ohmmeter function will cause small voltage applied component under test thus small current will flow through fact ohmmeter worksit applies voltage reads resulting current scale marked indicate ohmic value being measured small test signal normally no consequence power system use very sig nificant used within solid state cir cuitsbut thats beyond scope months column Finally careful connect ohmmeter active circuit such battery running motorthe ohmmeter measuring unpowered circuits components oniy Failure heed ad visory may result instrument damage Now some examples uses Remember optically-coupled speed control discussion can fact verify true separation receiver motor circuits aid ohmmeter Select highest resistance range available zero instrument both receiver motor power system switches OFF mean OFF connect ohmmeter lead elec trical part receiver system battery terminal contact unused servo plug exposed connection charge plug will connect other ohmmeter lead electrical part motor circuit brush connection motor battery terminal will What should see meter isno move ment Infinity ohms complete isola tion receiver motor systems would case nonoptically-isolated controls resis tance very much less infinity would indicate meter depending exact connections made other extreme try measuring motor resistance Select lowest resistance range zero instrument Disconnect motor system connector connect test leads motor terminals What should have very low ohms reading depend ing motor Turn armature slow ly Youre likely find new low ohms reading new armature position demonstrates very low resistance motorand variability low value depending brush contact varia tion armature position prac tical purposes such low readings much value simply because small variable unreliable other hand very poor no brush contactor dead commutator segmentit will show up quite noticeably rather large swing ohmmeter youre set up may well try thing Select low volt age range multimeter spin motor armature fingers pointer should move up down zero volts Reverse meter leads brushes pointer motion will reverse what before spin ning motor generates voltage Yup typical DC permanent-magnet motor also generator just use backward turning instead having turn something windmilling prop does turns out characteristic basic essential way motors work first place thats another long story resistance examples above limit examplesextremes high low resistance fact wide resistance ranges available multimeters little value Electrics often open short continuity information needed in-between ranges quite useful however receivers transmitters other elec tronic assemblies resistances can cover open short limits values between simple household resistance can use get further ac quainted ohmmeter light bulb Unscrew bulb try measuring resistance touching meter leads base contact points Depending lamp rating youll measure values few ohms 100 watt size few hundred ohms nite lite size Finally fun ohmmeter demonstra tion Set ohmmeter highest range hold test leads fingers making contact leads should get large resistance reading Squeeze leadsthe resistance reading should decrease Moisten hands get lower reading See body conductorit has measurable resistance its open circuit Ever wonder about girl friends resistance Thats issue friends Heres wishing happy quiet winter landingsremember Electric just great cold weather otherwise turns glow fuel gooey sticky smelly mess Please forward questions com ments SASE please Bob Kopski 25 West End Dr Lansdale PA 19446 RC Giant Scale/Beckman Continued page 57 tion-type engines witness ing melding advantages both Giant Scale four-cycle engines first look Saito 27 cu four-cycle twin action Its far cry inexpensive converted chainsaw engines few years ago does look nice sound beautiful perform superbly Before weekend over got another introduction four-cycle multicylinder engines told last month about Forest Edwards five-cylinder beau ty After watching two engines per form Im really getting four-cycle bug things go well hope Big Banger articles next few months try concentrate four-cycle engines keep getting vision Sparrowhawk Edwards engine nose should really give scale performance Youve heard babble times about real value flying chance talk people make new friends renew old friendships weekend particularly valuable last category got talk old friend hadnt seen 30 years Back early Fifties privileged work fly learn Continued page 148 February 1986 147 RC greats time Alex Schneider Alex won Nationals tWree times ushered era multi-reed con trol systems Like us have time time Alex dropped out model ing some years ago Its addiction cant really kick forever though hes getting back swing things Giant Scale isnt anything new him models flying Fifties wingspans 714 nine feet perfect weekend may getting activity much would like I right Correction time December issue photo got credited mistake insightful character study George Priveteer actually taken STARS member Ed Bush STARS Rally last July Bob Beckman 8248 Holly Grove Ct Manassas VA 22110 RC Pylon Racing/Hager Continued page 58 4 When operating TP/TPM recommended standardize fly ing setup respect fuel especially nitro content props glow plug fly ing course can compensate weather changes changing prop length TP/TPM As air den sity drops may have lengthen TP/TPM reduce prop load crease nitro compensate much change needed product experience Just remember no nitro allowed F3D Pylon 5 An alternate mounting method slide TP/TPM large-diameter mini-pipe such made K&B Prather Products Use high-tempera ture RTV red color sealant made GE Dow secure TP/TPM mini-pipe should also use silicone coupler seal junction between TP/TPM mini-pipe mini-pipe-TP/TPM assembly mounted engine via exhaust manifold 0-ring provide extra mounting insurance using two music wire hooks spring retainer secured mini-pipe stretched around engine cylinder disadvantage method pipe length relatively fixed cannot optimized weather conditions fuel prop load However excellent economical mounting methodespecially have known pipe length couple mini-pipes lying around ENGINE MODIFICATION best performance increase TP/TPM will result optimizing engine device Some engines per form better initially TP/TPM others will show small perfor mance gain stock configuration several engine modifications needed realize maximum performance TP/TPM 1 first modification lower compression ratio adding head shims gaskets account supercharging effect provided TP/TPM deck clearance generally should less 010 inches instances Recommended deck clear ances 012-018 range have some nitro fuel Blowing plugs running hot etc sure sign too high compression ratio Ideally should increase combustion chamber volume retain deck clearance about 012 2 If have access lathe good machinist make up new combus tion chamber deep bowl highroof configuration see what Im talk ing about locate ducted fan pilot uses K&B 75 engine longreach combustion chamber part no 9157 head shape will reduce detona tion generally improve plug life over stock head 3 While subject plugs strongly recommend both OPS RC 300 Rossi R-7 R-8 plugs Continued page 150 MFG OF NISTAETER $2995 Charger PLEASE SPECIFY WHICH CHARGER WHEN ORDERING TORK-STARTER revolutionary concept power 1 glow plugs model cars boats air planes using glow fuel engines TORK STARTERITMI has steel wrench strong enough reduce compression easier starting ft supplies pow dolag comes new C/b charger has LED indicate unit charging also has removable T handle can used Torque amplifier Over 50 consecutive starts full charge rechargeable hundreds times Clips onto plug positive connection Send ad along pre-payment receive free shipping handlino YORK-STARTER $2995 Charger 11 OV 220V 1 2V Fast Charter $2095 Without Charger CHARGERS $1295 Charger Only Ii 1OV 220V 12V Fast Charger 301 464-2260 148 Model Aviation ProTechTor STRONG METAL FRAME THERMO MOLDED SHELL FILLED WITH SOFT FOAM GREAT GIFT 951255 RC AIRPLANES BOATS CARS CAMERAS ETC Transmitter Case PRICE $35 Includes shipping Con USA Alaska & Hawaii add $2 CA Res add 6% tax OTHER PRODUCTS COMPUTER DISK CASE LOMAR CLAMP building tool PROMOUNT machined engine mounts MC SASE FOR FREE INFODEALEARS INVITED BERGERON ENTERPRISES 443 ROBERTA LLERTON CA 92632 12421 Ransom Dr. Glenn Dale MD 20769 L
Edition: Model Aviation - 1986/02
Page Numbers: 56, 57, 147, 148
Giant Scale Bob Beckman III VACATION slide show Ive moaning fact havent able get activity year didnt make Toledo last spring pass up STARS rally Olean July make worse havent out local flying field year modeling has really suffering malnutrition finally managed break out rut did vengeance happy combination business little free time field itself large can drop one-half onequarter-mile flying site anywhere almost lose it makes ideal location Giant Scale other RC activities Some earliest Giant Scale activity took place Merwin Ranch IMAA Chapter Eagle Squadron has hosted affair last five six years Ken Runestrand rest gang have got down science now have just enough organization control make possible large group enjoy relaxed weekend fly ing companionship Over 150 aircraft showed up year particularly enjoy trips West Coast since have good friends out Some new friends weve made since getting Giant Scale some go back lived out Fifties first stopwas Santa Clara Bob Iris Morse Bob prolificand opinion Bob Morses 40-lb Skyraider parked L Bob Seigeikoffs Art Chester Jeep behind Seigeikof owns converted Greyhound busits now motor home outhouse trailer models Skyralder flyby R Handles like trainer time made possible Evelyn go Labor Day Giant Scale Fly-in Merwin Ranch premier flying sites country two favorite locations other STARS Rally site Olean NY Imagine can pool table about half-a-mile long quarter-mile wide Substitute dichondra grass green baize youve got flying site Merwin Ranch near Sacramento CA Some people might wondering such big patch just grass right midst some inten sively-farmed land country answer isnt just ordinary grass Its actually dichondra seed farm its largest Merwin familys agricultural efforts Would believe tomatoes Christmas trees also grass cultivated allowed go seed chemicals applied kill grass harming seed Huge vacuum cleaners suck up seed leave area ready reseeded another crop Only small portion field being harvested 56 Model Aviation Merwin Ranch flying site Saturday morning view looking opposite direc tion would have same except campers would have right Forest Edwards runs up fabulous four-cycle radial engine made Fleet bipe really performs powerhouse up front Engine featured last month bestGiant Scale designer planproducer Ive shown lot pictures designs past will continue future columns because hes friend because hes good Friday morning helped Bob load monster Skyraider van headed Sacramento way stopped lunch Rio Vista As Im writing TV news talking about whale went way up river Rio Vista area really Giant Scale few miles up levee road along river arrived Mer win Ranch Although Fly-in didnt ficially start until Saturday morning already quarter-mile campers motor homes lined up beside field end line one-to-one Cessna gives another idea size facility several times during weekend full-size lightplanes set down stayed awhile flying already started course aircraft caught attention immediately Laser 200 putting quite show Ive seen lot Laser models halfwaygood pilot look great air different though pilot very good thing trigued engine noiseor lack Obviously four-cycle engine beautiful quiet purr would yank big Laser straight up less commotion regular big bangers idling Now Ive seen four-cycle engines before know has lot interest last few years Up now interest has academic since Im hooked Giant Scale igni Continued page 147 Chuck Fullers Ryan PT22 literally glints morning sunlight Chuck used chrome MonoKate fuselage right can see some detailing Chuck notes flying wires functionalhe found out hard wayl f lies well February 1986 57 [DCO SKY DEVIL 65 Ignition Approxed 90 Day Warrants Twin Ball Bearing Crank Americas finest old-timer engine Originally designed Hassad & Havlik replica engine resonic tuning ensures continuous flow power through speed range Look out green goodbye red headT&Ds replica Sky Devil 65 $279 less coil cond & plug Calif residents add 6% sales tax ORD[R DIRCT T&D RESEARCH AssocIAr1s 6371 El Cajon Blvd Suite 115 San Diego CA 92115 Si FOR BROCHURE ALL PURPOSE FOAM CU1TER Hands Off Cut II $10250 plus $800 ship ft handl Assembled Model HANDS OFF CUT II unique device cutting high quality foam wing cores hands off also cuts both sides same time Most modelers will amazed high quality smooth surface will achieve using device plus added ad vantage having wait until friends can come around help however just foam wing cutter HANDS OFF also capable cutting precision foam components such fuselage sections cowls tail surfaces HANDS OFF available two ways 1 completely assembled easy store fold up box includes handy 40 inch bow blocking up foam 2 hardware package assemble own board HANDS OFF CUT II requires 24 volt variable output power supplyEspecially designed tapered wiagsl Dealers WantedHands Off Cut ii Hardware Pkg$8750 plus 53 ship ft hand 24 Volt Variable Output Power Supply$5250 plus $3 ship ft hand NORRAY PRODUCTS INC 5008 Sandbeach Road F~77] Wichita Falls TX 76310 Tel 81716924475 multimeters ohmmeter function will cause small voltage applied component under test thus small current will flow through fact ohmmeter worksit applies voltage reads resulting current scale marked indicate ohmic value being measured small test signal normally no consequence power system use very sig nificant used within solid state cir cuitsbut thats beyond scope months column Finally careful connect ohmmeter active circuit such battery running motorthe ohmmeter measuring unpowered circuits components oniy Failure heed ad visory may result instrument damage Now some examples uses Remember optically-coupled speed control discussion can fact verify true separation receiver motor circuits aid ohmmeter Select highest resistance range available zero instrument both receiver motor power system switches OFF mean OFF connect ohmmeter lead elec trical part receiver system battery terminal contact unused servo plug exposed connection charge plug will connect other ohmmeter lead electrical part motor circuit brush connection motor battery terminal will What should see meter isno move ment Infinity ohms complete isola tion receiver motor systems would case nonoptically-isolated controls resis tance very much less infinity would indicate meter depending exact connections made other extreme try measuring motor resistance Select lowest resistance range zero instrument Disconnect motor system connector connect test leads motor terminals What should have very low ohms reading depend ing motor Turn armature slow ly Youre likely find new low ohms reading new armature position demonstrates very low resistance motorand variability low value depending brush contact varia tion armature position prac tical purposes such low readings much value simply because small variable unreliable other hand very poor no brush contactor dead commutator segmentit will show up quite noticeably rather large swing ohmmeter youre set up may well try thing Select low volt age range multimeter spin motor armature fingers pointer should move up down zero volts Reverse meter leads brushes pointer motion will reverse what before spin ning motor generates voltage Yup typical DC permanent-magnet motor also generator just use backward turning instead having turn something windmilling prop does turns out characteristic basic essential way motors work first place thats another long story resistance examples above limit examplesextremes high low resistance fact wide resistance ranges available multimeters little value Electrics often open short continuity information needed in-between ranges quite useful however receivers transmitters other elec tronic assemblies resistances can cover open short limits values between simple household resistance can use get further ac quainted ohmmeter light bulb Unscrew bulb try measuring resistance touching meter leads base contact points Depending lamp rating youll measure values few ohms 100 watt size few hundred ohms nite lite size Finally fun ohmmeter demonstra tion Set ohmmeter highest range hold test leads fingers making contact leads should get large resistance reading Squeeze leadsthe resistance reading should decrease Moisten hands get lower reading See body conductorit has measurable resistance its open circuit Ever wonder about girl friends resistance Thats issue friends Heres wishing happy quiet winter landingsremember Electric just great cold weather otherwise turns glow fuel gooey sticky smelly mess Please forward questions com ments SASE please Bob Kopski 25 West End Dr Lansdale PA 19446 RC Giant Scale/Beckman Continued page 57 tion-type engines witness ing melding advantages both Giant Scale four-cycle engines first look Saito 27 cu four-cycle twin action Its far cry inexpensive converted chainsaw engines few years ago does look nice sound beautiful perform superbly Before weekend over got another introduction four-cycle multicylinder engines told last month about Forest Edwards five-cylinder beau ty After watching two engines per form Im really getting four-cycle bug things go well hope Big Banger articles next few months try concentrate four-cycle engines keep getting vision Sparrowhawk Edwards engine nose should really give scale performance Youve heard babble times about real value flying chance talk people make new friends renew old friendships weekend particularly valuable last category got talk old friend hadnt seen 30 years Back early Fifties privileged work fly learn Continued page 148 February 1986 147 RC greats time Alex Schneider Alex won Nationals tWree times ushered era multi-reed con trol systems Like us have time time Alex dropped out model ing some years ago Its addiction cant really kick forever though hes getting back swing things Giant Scale isnt anything new him models flying Fifties wingspans 714 nine feet perfect weekend may getting activity much would like I right Correction time December issue photo got credited mistake insightful character study George Priveteer actually taken STARS member Ed Bush STARS Rally last July Bob Beckman 8248 Holly Grove Ct Manassas VA 22110 RC Pylon Racing/Hager Continued page 58 4 When operating TP/TPM recommended standardize fly ing setup respect fuel especially nitro content props glow plug fly ing course can compensate weather changes changing prop length TP/TPM As air den sity drops may have lengthen TP/TPM reduce prop load crease nitro compensate much change needed product experience Just remember no nitro allowed F3D Pylon 5 An alternate mounting method slide TP/TPM large-diameter mini-pipe such made K&B Prather Products Use high-tempera ture RTV red color sealant made GE Dow secure TP/TPM mini-pipe should also use silicone coupler seal junction between TP/TPM mini-pipe mini-pipe-TP/TPM assembly mounted engine via exhaust manifold 0-ring provide extra mounting insurance using two music wire hooks spring retainer secured mini-pipe stretched around engine cylinder disadvantage method pipe length relatively fixed cannot optimized weather conditions fuel prop load However excellent economical mounting methodespecially have known pipe length couple mini-pipes lying around ENGINE MODIFICATION best performance increase TP/TPM will result optimizing engine device Some engines per form better initially TP/TPM others will show small perfor mance gain stock configuration several engine modifications needed realize maximum performance TP/TPM 1 first modification lower compression ratio adding head shims gaskets account supercharging effect provided TP/TPM deck clearance generally should less 010 inches instances Recommended deck clear ances 012-018 range have some nitro fuel Blowing plugs running hot etc sure sign too high compression ratio Ideally should increase combustion chamber volume retain deck clearance about 012 2 If have access lathe good machinist make up new combus tion chamber deep bowl highroof configuration see what Im talk ing about locate ducted fan pilot uses K&B 75 engine longreach combustion chamber part no 9157 head shape will reduce detona tion generally improve plug life over stock head 3 While subject plugs strongly recommend both OPS RC 300 Rossi R-7 R-8 plugs Continued page 150 MFG OF NISTAETER $2995 Charger PLEASE SPECIFY WHICH CHARGER WHEN ORDERING TORK-STARTER revolutionary concept power 1 glow plugs model cars boats air planes using glow fuel engines TORK STARTERITMI has steel wrench strong enough reduce compression easier starting ft supplies pow dolag comes new C/b charger has LED indicate unit charging also has removable T handle can used Torque amplifier Over 50 consecutive starts full charge rechargeable hundreds times Clips onto plug positive connection Send ad along pre-payment receive free shipping handlino YORK-STARTER $2995 Charger 11 OV 220V 1 2V Fast Charter $2095 Without Charger CHARGERS $1295 Charger Only Ii 1OV 220V 12V Fast Charger 301 464-2260 148 Model Aviation ProTechTor STRONG METAL FRAME THERMO MOLDED SHELL FILLED WITH SOFT FOAM GREAT GIFT 951255 RC AIRPLANES BOATS CARS CAMERAS ETC Transmitter Case PRICE $35 Includes shipping Con USA Alaska & Hawaii add $2 CA Res add 6% tax OTHER PRODUCTS COMPUTER DISK CASE LOMAR CLAMP building tool PROMOUNT machined engine mounts MC SASE FOR FREE INFODEALEARS INVITED BERGERON ENTERPRISES 443 ROBERTA LLERTON CA 92632 12421 Ransom Dr. Glenn Dale MD 20769 L
Edition: Model Aviation - 1986/02
Page Numbers: 56, 57, 147, 148
Giant Scale Bob Beckman III VACATION slide show Ive moaning fact havent able get activity year didnt make Toledo last spring pass up STARS rally Olean July make worse havent out local flying field year modeling has really suffering malnutrition finally managed break out rut did vengeance happy combination business little free time field itself large can drop one-half onequarter-mile flying site anywhere almost lose it makes ideal location Giant Scale other RC activities Some earliest Giant Scale activity took place Merwin Ranch IMAA Chapter Eagle Squadron has hosted affair last five six years Ken Runestrand rest gang have got down science now have just enough organization control make possible large group enjoy relaxed weekend fly ing companionship Over 150 aircraft showed up year particularly enjoy trips West Coast since have good friends out Some new friends weve made since getting Giant Scale some go back lived out Fifties first stopwas Santa Clara Bob Iris Morse Bob prolificand opinion Bob Morses 40-lb Skyraider parked L Bob Seigeikoffs Art Chester Jeep behind Seigeikof owns converted Greyhound busits now motor home outhouse trailer models Skyralder flyby R Handles like trainer time made possible Evelyn go Labor Day Giant Scale Fly-in Merwin Ranch premier flying sites country two favorite locations other STARS Rally site Olean NY Imagine can pool table about half-a-mile long quarter-mile wide Substitute dichondra grass green baize youve got flying site Merwin Ranch near Sacramento CA Some people might wondering such big patch just grass right midst some inten sively-farmed land country answer isnt just ordinary grass Its actually dichondra seed farm its largest Merwin familys agricultural efforts Would believe tomatoes Christmas trees also grass cultivated allowed go seed chemicals applied kill grass harming seed Huge vacuum cleaners suck up seed leave area ready reseeded another crop Only small portion field being harvested 56 Model Aviation Merwin Ranch flying site Saturday morning view looking opposite direc tion would have same except campers would have right Forest Edwards runs up fabulous four-cycle radial engine made Fleet bipe really performs powerhouse up front Engine featured last month bestGiant Scale designer planproducer Ive shown lot pictures designs past will continue future columns because hes friend because hes good Friday morning helped Bob load monster Skyraider van headed Sacramento way stopped lunch Rio Vista As Im writing TV news talking about whale went way up river Rio Vista area really Giant Scale few miles up levee road along river arrived Mer win Ranch Although Fly-in didnt ficially start until Saturday morning already quarter-mile campers motor homes lined up beside field end line one-to-one Cessna gives another idea size facility several times during weekend full-size lightplanes set down stayed awhile flying already started course aircraft caught attention immediately Laser 200 putting quite show Ive seen lot Laser models halfwaygood pilot look great air different though pilot very good thing trigued engine noiseor lack Obviously four-cycle engine beautiful quiet purr would yank big Laser straight up less commotion regular big bangers idling Now Ive seen four-cycle engines before know has lot interest last few years Up now interest has academic since Im hooked Giant Scale igni Continued page 147 Chuck Fullers Ryan PT22 literally glints morning sunlight Chuck used chrome MonoKate fuselage right can see some detailing Chuck notes flying wires functionalhe found out hard wayl f lies well February 1986 57 [DCO SKY DEVIL 65 Ignition Approxed 90 Day Warrants Twin Ball Bearing Crank Americas finest old-timer engine Originally designed Hassad & Havlik replica engine resonic tuning ensures continuous flow power through speed range Look out green goodbye red headT&Ds replica Sky Devil 65 $279 less coil cond & plug Calif residents add 6% sales tax ORD[R DIRCT T&D RESEARCH AssocIAr1s 6371 El Cajon Blvd Suite 115 San Diego CA 92115 Si FOR BROCHURE ALL PURPOSE FOAM CU1TER Hands Off Cut II $10250 plus $800 ship ft handl Assembled Model HANDS OFF CUT II unique device cutting high quality foam wing cores hands off also cuts both sides same time Most modelers will amazed high quality smooth surface will achieve using device plus added ad vantage having wait until friends can come around help however just foam wing cutter HANDS OFF also capable cutting precision foam components such fuselage sections cowls tail surfaces HANDS OFF available two ways 1 completely assembled easy store fold up box includes handy 40 inch bow blocking up foam 2 hardware package assemble own board HANDS OFF CUT II requires 24 volt variable output power supplyEspecially designed tapered wiagsl Dealers WantedHands Off Cut ii Hardware Pkg$8750 plus 53 ship ft hand 24 Volt Variable Output Power Supply$5250 plus $3 ship ft hand NORRAY PRODUCTS INC 5008 Sandbeach Road F~77] Wichita Falls TX 76310 Tel 81716924475 multimeters ohmmeter function will cause small voltage applied component under test thus small current will flow through fact ohmmeter worksit applies voltage reads resulting current scale marked indicate ohmic value being measured small test signal normally no consequence power system use very sig nificant used within solid state cir cuitsbut thats beyond scope months column Finally careful connect ohmmeter active circuit such battery running motorthe ohmmeter measuring unpowered circuits components oniy Failure heed ad visory may result instrument damage Now some examples uses Remember optically-coupled speed control discussion can fact verify true separation receiver motor circuits aid ohmmeter Select highest resistance range available zero instrument both receiver motor power system switches OFF mean OFF connect ohmmeter lead elec trical part receiver system battery terminal contact unused servo plug exposed connection charge plug will connect other ohmmeter lead electrical part motor circuit brush connection motor battery terminal will What should see meter isno move ment Infinity ohms complete isola tion receiver motor systems would case nonoptically-isolated controls resis tance very much less infinity would indicate meter depending exact connections made other extreme try measuring motor resistance Select lowest resistance range zero instrument Disconnect motor system connector connect test leads motor terminals What should have very low ohms reading depend ing motor Turn armature slow ly Youre likely find new low ohms reading new armature position demonstrates very low resistance motorand variability low value depending brush contact varia tion armature position prac tical purposes such low readings much value simply because small variable unreliable other hand very poor no brush contactor dead commutator segmentit will show up quite noticeably rather large swing ohmmeter youre set up may well try thing Select low volt age range multimeter spin motor armature fingers pointer should move up down zero volts Reverse meter leads brushes pointer motion will reverse what before spin ning motor generates voltage Yup typical DC permanent-magnet motor also generator just use backward turning instead having turn something windmilling prop does turns out characteristic basic essential way motors work first place thats another long story resistance examples above limit examplesextremes high low resistance fact wide resistance ranges available multimeters little value Electrics often open short continuity information needed in-between ranges quite useful however receivers transmitters other elec tronic assemblies resistances can cover open short limits values between simple household resistance can use get further ac quainted ohmmeter light bulb Unscrew bulb try measuring resistance touching meter leads base contact points Depending lamp rating youll measure values few ohms 100 watt size few hundred ohms nite lite size Finally fun ohmmeter demonstra tion Set ohmmeter highest range hold test leads fingers making contact leads should get large resistance reading Squeeze leadsthe resistance reading should decrease Moisten hands get lower reading See body conductorit has measurable resistance its open circuit Ever wonder about girl friends resistance Thats issue friends Heres wishing happy quiet winter landingsremember Electric just great cold weather otherwise turns glow fuel gooey sticky smelly mess Please forward questions com ments SASE please Bob Kopski 25 West End Dr Lansdale PA 19446 RC Giant Scale/Beckman Continued page 57 tion-type engines witness ing melding advantages both Giant Scale four-cycle engines first look Saito 27 cu four-cycle twin action Its far cry inexpensive converted chainsaw engines few years ago does look nice sound beautiful perform superbly Before weekend over got another introduction four-cycle multicylinder engines told last month about Forest Edwards five-cylinder beau ty After watching two engines per form Im really getting four-cycle bug things go well hope Big Banger articles next few months try concentrate four-cycle engines keep getting vision Sparrowhawk Edwards engine nose should really give scale performance Youve heard babble times about real value flying chance talk people make new friends renew old friendships weekend particularly valuable last category got talk old friend hadnt seen 30 years Back early Fifties privileged work fly learn Continued page 148 February 1986 147 RC greats time Alex Schneider Alex won Nationals tWree times ushered era multi-reed con trol systems Like us have time time Alex dropped out model ing some years ago Its addiction cant really kick forever though hes getting back swing things Giant Scale isnt anything new him models flying Fifties wingspans 714 nine feet perfect weekend may getting activity much would like I right Correction time December issue photo got credited mistake insightful character study George Priveteer actually taken STARS member Ed Bush STARS Rally last July Bob Beckman 8248 Holly Grove Ct Manassas VA 22110 RC Pylon Racing/Hager Continued page 58 4 When operating TP/TPM recommended standardize fly ing setup respect fuel especially nitro content props glow plug fly ing course can compensate weather changes changing prop length TP/TPM As air den sity drops may have lengthen TP/TPM reduce prop load crease nitro compensate much change needed product experience Just remember no nitro allowed F3D Pylon 5 An alternate mounting method slide TP/TPM large-diameter mini-pipe such made K&B Prather Products Use high-tempera ture RTV red color sealant made GE Dow secure TP/TPM mini-pipe should also use silicone coupler seal junction between TP/TPM mini-pipe mini-pipe-TP/TPM assembly mounted engine via exhaust manifold 0-ring provide extra mounting insurance using two music wire hooks spring retainer secured mini-pipe stretched around engine cylinder disadvantage method pipe length relatively fixed cannot optimized weather conditions fuel prop load However excellent economical mounting methodespecially have known pipe length couple mini-pipes lying around ENGINE MODIFICATION best performance increase TP/TPM will result optimizing engine device Some engines per form better initially TP/TPM others will show small perfor mance gain stock configuration several engine modifications needed realize maximum performance TP/TPM 1 first modification lower compression ratio adding head shims gaskets account supercharging effect provided TP/TPM deck clearance generally should less 010 inches instances Recommended deck clear ances 012-018 range have some nitro fuel Blowing plugs running hot etc sure sign too high compression ratio Ideally should increase combustion chamber volume retain deck clearance about 012 2 If have access lathe good machinist make up new combus tion chamber deep bowl highroof configuration see what Im talk ing about locate ducted fan pilot uses K&B 75 engine longreach combustion chamber part no 9157 head shape will reduce detona tion generally improve plug life over stock head 3 While subject plugs strongly recommend both OPS RC 300 Rossi R-7 R-8 plugs Continued page 150 MFG OF NISTAETER $2995 Charger PLEASE SPECIFY WHICH CHARGER WHEN ORDERING TORK-STARTER revolutionary concept power 1 glow plugs model cars boats air planes using glow fuel engines TORK STARTERITMI has steel wrench strong enough reduce compression easier starting ft supplies pow dolag comes new C/b charger has LED indicate unit charging also has removable T handle can used Torque amplifier Over 50 consecutive starts full charge rechargeable hundreds times Clips onto plug positive connection Send ad along pre-payment receive free shipping handlino YORK-STARTER $2995 Charger 11 OV 220V 1 2V Fast Charter $2095 Without Charger CHARGERS $1295 Charger Only Ii 1OV 220V 12V Fast Charger 301 464-2260 148 Model Aviation ProTechTor STRONG METAL FRAME THERMO MOLDED SHELL FILLED WITH SOFT FOAM GREAT GIFT 951255 RC AIRPLANES BOATS CARS CAMERAS ETC Transmitter Case PRICE $35 Includes shipping Con USA Alaska & Hawaii add $2 CA Res add 6% tax OTHER PRODUCTS COMPUTER DISK CASE LOMAR CLAMP building tool PROMOUNT machined engine mounts MC SASE FOR FREE INFODEALEARS INVITED BERGERON ENTERPRISES 443 ROBERTA LLERTON CA 92632 12421 Ransom Dr. Glenn Dale MD 20769 L
