Radio Control Sport & Aerobatics Ron Van Putte NEW TECHNOLOGY few months back mentioned nasty fraying fiberglass can stopped using Jet other similar cyanoacrylate glue along line cloth cut works well stop fraying too much Jet applied along cutting line stiff area cloth will result making difficult use learned apply thin line Jet avoid problem got telephone call John Kenney operates Square Loop Hobby Center Greenwood MS John suggest ed spraying product called Fray Check along cutting line claimed worked didnt make fiberglass cloth stiff hes right dont know Fray Check available fabric stores nation wide its worth looking Since live Florida RC flying sea son lasts nearly 10 months may surprise some learn part Florida Panhandle gets some very cold weather wintertime Its uncommon have temperatures low teens some clear calm nights February Since dont like cold weather often dont fly RC January February means engines can sit couple months being run Corrosion experts tell us about nasty things can happen raw fuel left engine over winter loused up bearings several engines before learning treat properly before storage fact use same technique now time am finished flying day takes five minutes havent bearing failure since starting use Actually credit belongs Steve Rojecki day watched him empty fuel tank open throttle spray liberal slug WD-40 intake engine finished flying day proceeded attach glow driver connector put starter engine fired up ran few seconds stopped did three times same results After ward explained WD-40 pro pellant combustible As engine runs carries lubricant throughout engine including bearings engine stops propellant gone thats left lubricant Im above stealing good idea started using However after letting engine sit several months noticed kind stiff hard turn over WD-40 lubricant tends thicken get waxy after sitting long Apparently doesnt hurt anything makes engine hard start after long layoff Are beginning get pic ture about winter long layoff started looking suitable replace ment WD-40 found Its called Rus-Kil Formula 60 its made Mobile Paint Manufacturing Company Theodore AL claim its water-displacement lubricant actu ally displaces moisture parts works engines dont get stiff prolonged storage Actually suspect lot similar prod ucts around country Look some thing claims water-displace ment lubricant Try now may have replace bearings next spring Now contest season over Ive started couple new air planes first T-2A MK II finally managed get Tom Atkins Southeastern Air Crafters Marietta GA after waiting impatiently about year Tom has funny quirk wish kit manufacturers afflicted will send out kit meets high standards Production quality control problems fiberglass fuse lages high demand T-2A Southeast made take #$@ long get Later Ive finished flown Ill file report via pictures text other airplane Im building Elliptic stylish-looking Turnaround airplane produced US Eagle Inc Greenville TX Its balsa-and-ply wood beauty will have OS-l20 four-cycle up front finished design can powered either twocycle four-cycle engine chose four-cycle because airplane will fly slower constant speed two-cycle engine course nose shortened preclude larger size weight OS-l20 moving airplane center mass too far forward simple matter cut off nose pull fuselage sides since Elliptic has such long nose anyway Like T-2A MK II Ill report soon has finished flown way dont tell Ron Chidgey Van Putte building Turnaround airplaneit might too much shock Actually never said Id compete Turnaroundjust have Turnaround airplane under consideration should lessen shock winds blow hard gusty dont like fly Some fly areas its always windy wont give sympathy windy conditions spoil enjoyment flying dont Left Revenge Pattern filer Paul Verger Lafayette LA Keith Boudreau hold grid barbecue grill front him revenge against pencil-holding judges Despite clowning highest-scoring flight Right Sam Leonard Pensacola FL holds hottest designs current Pattern competition Atlanta distributed Golden Gate Hobbies design versatile competing successfully AMA Masters well FAt Turnaround events 44Model Aviation go out its warm can go sailing winters cold shoots down So what its cold windy dont want watch TV about RC car Have seen modern electric RC cars hadnt un til recently great available sources prices around $50 $200 up bought MRC Tamiya Grasshopper low-priced car simple bearings suspension really scoots Im having great time Its plenty fast already shock absorbers ball bearings high-current motor can purchased hop up though Grasshopper least expensive MRC cars pleasantly sur prised quality its design manufacture dont get RC car Christmas can always buy self little after-Christmas gift ward off post-holiday depression Besides theyre great maintaining hand/ eye coordination Earlier article mentioned getting center mass new Elliptic proper place occurred beginners have no idea importance proper location airplane center mass Its common beginners shift center mass airplane adding weight get rid up- down-elevator trim considering effect added weight airplane stability Shifting center mass airplane first done late 1800s Otto Lilienthal flying gliders Lilienthal controlled altitude gliders moving body changed location center mass What didnt realize was changing gliders trim stability killed himself doing consequences probably wont quite disastrous RC fliers Continued page 133 BALSA SHEETS364830 116x233 332 x 240 18 x243 316x248 114 x256 132x337 120x337 116x 3374931 332 x 3445837 18 x35471 316x36282 1i4 x3738861 5l6x385 38 x38812471 12 x3110156 34 x3165 116 x4687649 332 x4709456 iS x48010666 016x49312275 14 x411013484 38 x 4165225 12 x4228261 MATCHED SHEETS42 332x4100 1i8x4108 316x412C 1i4x4131 BALSA STICKS 116x14 116x38 l18x12 332x14 332x38 332x12 18x16 18x14 18x38 lRx 1i2 316x316 316x38 318x12 li4x114 li4x38 li4x12 l4x34 14x1 516x516 38x38 38x12 38 x34 38x1 12x1i2 li2x314 12x1 58 x88 34 x34 36 09 10 14 10 12 16 08 11 12 16 11 17 22 16 19 21 34 40 21 27 32 42 52 36 46 58 46 67 BALSA HOT LINE Call 806 745 6394 10am- 6pm Central Time 18 26 55 02 BALSA TRIANGLES 14 xl 4 38 x 38 1212 1' x 1' BALSA PLANKS lxi 1 x2 1 x3 1 x4 1 l2x3 1 12x4 2x2 2x3 2x4 3x3 3x4 TAPERED SHEETS 14x 2 1/4 x 3 3i8 x 2 3B x 3 12 x 3 36 25 30 34 45 55 36 88 150 200 280 275 360 225 325 435 495 688 36 65 85 68 98 120 LGNE STAR EPDXY S xxLixx-8R5 5 cix598 15 mix558 30 mix598 LIGHT 4-8 LB 36 132c3 120x3 116x3 332 x 3 18 x 3 316x3 14 x 2 38 x 3 12 x 3 34 x 3 lx 3 lilOx4 332 x 4 8 x 4 316 x 4 14 x 4 38 x 4 12 x 4 TRAILING EDGE36 li4xl32 516x1 1i439 38x1 1246 12x270 INSTANT GLUE 1 xx Thick298 1 xx Thin298 2 xx Thick550 2 xx Thix550 BASS WDDD 316x316 3l6xli4 149318x3i8 49 316c12 49 316x34 56 14x14 67 li4x3iB 78 14x34 65 38 x 38 115 38x12 139 38x34 220 ll2xl2 300 12x34 78 91 100 117 138 207 262 48 26 30 38 46 60 42 49 80 60 70 90 90 100 8UNDLE DEALS 2016 x 3 x 36685 201i16x4 x361020 20332 x 3 x 36845 15332c4x36955 15-18x 3 x36715 10-18x4x36675 15-316 x3x36900 103i18 x4x 36810 101i4x3x36630 10114x4x36ass 1038 c 3 x 36850 538 x 4 x 36826 517x3x36540 512x4x36858 10-332 x4x48845 518x4x49485 a3i16 x 4 x 48585 5-1l4x4x48625 PINE STICKS3848 18x1B13 liSxli41623 18x3820 316x 3161724 310 x 382332 318x1234 l/4xl142637 14x383042 14x123447 36 x 38 37 52 SPRUCE STICKS 36 48 l8x 1815 18x1i41824 18x3820 316x 3162534 14x143148 li4x 383650 38 x384563 38x125570 12x126080 1l2x 3468 88 OPRUCETRIANGLE 36 38x3845 12x1261 3l4x3i477 LITE PLY 48 18 x 6 18 xl 2 150 300 HARD MAPLE 18 1i4x38 38 x 3i8 38x1i2 38 x3i4 1i2x34 40 45 50 58 68 BIRCH DGWELO36 1009 31611 1i414 51625 3832 3 PLYBIRCH46 164x12525 132x12425 116x12435 llBxl2450 PLY BIRCH 48 332 x 12670 18x12585 3l6x12585 14x12680 GRGGVED LG MGUNTS 12 ixchxs 318x314118140 38 x 3415321 40 12x3413/16145 Handling Charge$300 pay UPS Add $200 COD $300 extra PP APO FPO accent Visa Master Card nersnnal checks nr COG 41 8/ xxxix mcxc IR xci Micix cx flclc 515 511 February 198545 Miniature Aircraft Competitors Club Bensenville IL spon sor one-design contest Real Thing planes Since everyone flies th same kind plane pilot skill major factor determining winner left some competitors Above beautifully-crafted example Real Thing Debra Justice design good flier inexpensive fast build club much fun theyll try itagainwith different plane WE ARE 5HOOTING DOWN HIGHBALSAPRICES WITH SUPER QUALITYI Satisfaction Guaranteed Direct Only 48 V CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance must try 4-6 lb balsa LONE STAR MODELS 1623 57th St Lubbock TX 79412 Al Featuring fast service qualified people latest equipment including SPECTRUM ANAL YZER AM FM SIGNAL GENERATOR Call Steve Helms Sam Leonard Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessoriesall discounted prices Steve Helms 9Q4 478-6745 RADIO SOUTH~ AUTHORIZED SERVICE CENTEI FOR Kraft Pro LineFutaba I *iRI*IEIEI I--I --II 180 E Burgess Rd JR * Futaba Distributor er Inquiries Welcome * diameter cone air higher speed around fuselage friction ed dies turbulence rob moving air its effectiveness is particularly true models large round cowls radial dummy engines Tuibulence friction much reduced largediameter propeller because moving cone air lower velocity further away fuselage have heard stories overprop ping engine somehow injurious has proved true have using Supertigre 60 14-6 prop 16 years WW Sopwith engine good today new Wear actually reduced sixounce fuel tank needed 11000 rpm expect ST 60 use ounce fuel per minute experience shows rate A-ounce per minute 6000 rpm 14-6 prop engine runs cooler less internal friction minimize wear large prop permits slower realistic flight possible lightweight airplanes Heavier models will need airspeed full engine out put reasonable climb performance avoid risk stall after takeoff Impact damage heavier model always greater mishap element flight realism consid erably enhanced sound twostroke engine lower speed lowervolume exhaust gases muffler can restricted Sopwith muffler l-in-diameter aluminum tube solid end plate drilled A-in exit holes threading self-tapping screws several holes amount restriction can tuned best per formance least noise have heard comments Supertigre has sound very similar four-stroke engine model has flown often residential area neighbors arent aware engine sound ing up down often does both very quickly best thing situation slow airplane down very gentle colitrols try ease t6 landing Unfortunately usually occurs first flight airplane out trim anyway Survivors drama seldom have convinced airplane center mass needs moved forward proper range rest make sure its right next airplane center mass too far forward doesnt cause such dramatic conse quences lQt airplanes have bent because symptoms sim ple lot elevator necessary per form loops rolls flare airplatie landings airplane usually dinged landing pilot suddenly dis covets has stick way back airplane still sinking Mov- ing center mass back proper range will cure sinking feeling Bob Dolly Wischer S-221 Laphamkeep landing ear bottom side Peak Rd Delafield WI 53018of wing RC Aerobatics/Van Putte Continued page 45 thoughtlessly change airplanes center mass could mess up perfectly good airplane range locations airplanes center mass trimmable controlla ble stable range actually quite broad intentional reasoned move ment center mass often neces sary improve airplanes flying quali ties Beginners should always make sure airplanes center mass within range recommended plans dramatic consequence improper center mass location behind recommended area. An aft center mass can bring chills flier because airplane suddenly unstable pitch doesnt care whether its pitchRon Van Putte 111 Sleepy Qaks Rd Ft Walton Beach FL 32548 RC Old-Timers/Mathews Continued page 47 floats overhead Reduced 60% original size Pi1oh Buster shows enough potential hold its own AA Texaco competi tion full-sized fully-powered may well extraordinary Anyone has flying invited let us know goes Two approaches power runs credible explosion activity Y2A Tex aco a9ound world has introduced modelers joys RC OldTimer us thought lOssible Continised page 136 An better example quiet opera tion large prop diameters quarter-scale Aeronca K its Gemini 120 twin four-stroke engine recom mended 16-6 prop will yield 9000 rpm Hand-carved 18-7 props bring engine rpm down 6000 exhaust sound barely heard muffler difference between pro pellers negligible performance open throttle However Aeronca will fly near-scale speed about 4000 rpm large prop engine sound almost inaudible large engine just sips fuel throttle setting less ounce per minute carve props Because experimentation purchased props could quite expensive $10 $13 maple raw material prop costs about ior plus about hours time carving results arent satisfactory prop broken loss small February 198133 Pensacola FL 32503
Edition: Model Aviation - 1985/02
Page Numbers: 44, 45, 133
Radio Control Sport & Aerobatics Ron Van Putte NEW TECHNOLOGY few months back mentioned nasty fraying fiberglass can stopped using Jet other similar cyanoacrylate glue along line cloth cut works well stop fraying too much Jet applied along cutting line stiff area cloth will result making difficult use learned apply thin line Jet avoid problem got telephone call John Kenney operates Square Loop Hobby Center Greenwood MS John suggest ed spraying product called Fray Check along cutting line claimed worked didnt make fiberglass cloth stiff hes right dont know Fray Check available fabric stores nation wide its worth looking Since live Florida RC flying sea son lasts nearly 10 months may surprise some learn part Florida Panhandle gets some very cold weather wintertime Its uncommon have temperatures low teens some clear calm nights February Since dont like cold weather often dont fly RC January February means engines can sit couple months being run Corrosion experts tell us about nasty things can happen raw fuel left engine over winter loused up bearings several engines before learning treat properly before storage fact use same technique now time am finished flying day takes five minutes havent bearing failure since starting use Actually credit belongs Steve Rojecki day watched him empty fuel tank open throttle spray liberal slug WD-40 intake engine finished flying day proceeded attach glow driver connector put starter engine fired up ran few seconds stopped did three times same results After ward explained WD-40 pro pellant combustible As engine runs carries lubricant throughout engine including bearings engine stops propellant gone thats left lubricant Im above stealing good idea started using However after letting engine sit several months noticed kind stiff hard turn over WD-40 lubricant tends thicken get waxy after sitting long Apparently doesnt hurt anything makes engine hard start after long layoff Are beginning get pic ture about winter long layoff started looking suitable replace ment WD-40 found Its called Rus-Kil Formula 60 its made Mobile Paint Manufacturing Company Theodore AL claim its water-displacement lubricant actu ally displaces moisture parts works engines dont get stiff prolonged storage Actually suspect lot similar prod ucts around country Look some thing claims water-displace ment lubricant Try now may have replace bearings next spring Now contest season over Ive started couple new air planes first T-2A MK II finally managed get Tom Atkins Southeastern Air Crafters Marietta GA after waiting impatiently about year Tom has funny quirk wish kit manufacturers afflicted will send out kit meets high standards Production quality control problems fiberglass fuse lages high demand T-2A Southeast made take #$@ long get Later Ive finished flown Ill file report via pictures text other airplane Im building Elliptic stylish-looking Turnaround airplane produced US Eagle Inc Greenville TX Its balsa-and-ply wood beauty will have OS-l20 four-cycle up front finished design can powered either twocycle four-cycle engine chose four-cycle because airplane will fly slower constant speed two-cycle engine course nose shortened preclude larger size weight OS-l20 moving airplane center mass too far forward simple matter cut off nose pull fuselage sides since Elliptic has such long nose anyway Like T-2A MK II Ill report soon has finished flown way dont tell Ron Chidgey Van Putte building Turnaround airplaneit might too much shock Actually never said Id compete Turnaroundjust have Turnaround airplane under consideration should lessen shock winds blow hard gusty dont like fly Some fly areas its always windy wont give sympathy windy conditions spoil enjoyment flying dont Left Revenge Pattern filer Paul Verger Lafayette LA Keith Boudreau hold grid barbecue grill front him revenge against pencil-holding judges Despite clowning highest-scoring flight Right Sam Leonard Pensacola FL holds hottest designs current Pattern competition Atlanta distributed Golden Gate Hobbies design versatile competing successfully AMA Masters well FAt Turnaround events 44Model Aviation go out its warm can go sailing winters cold shoots down So what its cold windy dont want watch TV about RC car Have seen modern electric RC cars hadnt un til recently great available sources prices around $50 $200 up bought MRC Tamiya Grasshopper low-priced car simple bearings suspension really scoots Im having great time Its plenty fast already shock absorbers ball bearings high-current motor can purchased hop up though Grasshopper least expensive MRC cars pleasantly sur prised quality its design manufacture dont get RC car Christmas can always buy self little after-Christmas gift ward off post-holiday depression Besides theyre great maintaining hand/ eye coordination Earlier article mentioned getting center mass new Elliptic proper place occurred beginners have no idea importance proper location airplane center mass Its common beginners shift center mass airplane adding weight get rid up- down-elevator trim considering effect added weight airplane stability Shifting center mass airplane first done late 1800s Otto Lilienthal flying gliders Lilienthal controlled altitude gliders moving body changed location center mass What didnt realize was changing gliders trim stability killed himself doing consequences probably wont quite disastrous RC fliers Continued page 133 BALSA SHEETS364830 116x233 332 x 240 18 x243 316x248 114 x256 132x337 120x337 116x 3374931 332 x 3445837 18 x35471 316x36282 1i4 x3738861 5l6x385 38 x38812471 12 x3110156 34 x3165 116 x4687649 332 x4709456 iS x48010666 016x49312275 14 x411013484 38 x 4165225 12 x4228261 MATCHED SHEETS42 332x4100 1i8x4108 316x412C 1i4x4131 BALSA STICKS 116x14 116x38 l18x12 332x14 332x38 332x12 18x16 18x14 18x38 lRx 1i2 316x316 316x38 318x12 li4x114 li4x38 li4x12 l4x34 14x1 516x516 38x38 38x12 38 x34 38x1 12x1i2 li2x314 12x1 58 x88 34 x34 36 09 10 14 10 12 16 08 11 12 16 11 17 22 16 19 21 34 40 21 27 32 42 52 36 46 58 46 67 BALSA HOT LINE Call 806 745 6394 10am- 6pm Central Time 18 26 55 02 BALSA TRIANGLES 14 xl 4 38 x 38 1212 1' x 1' BALSA PLANKS lxi 1 x2 1 x3 1 x4 1 l2x3 1 12x4 2x2 2x3 2x4 3x3 3x4 TAPERED SHEETS 14x 2 1/4 x 3 3i8 x 2 3B x 3 12 x 3 36 25 30 34 45 55 36 88 150 200 280 275 360 225 325 435 495 688 36 65 85 68 98 120 LGNE STAR EPDXY S xxLixx-8R5 5 cix598 15 mix558 30 mix598 LIGHT 4-8 LB 36 132c3 120x3 116x3 332 x 3 18 x 3 316x3 14 x 2 38 x 3 12 x 3 34 x 3 lx 3 lilOx4 332 x 4 8 x 4 316 x 4 14 x 4 38 x 4 12 x 4 TRAILING EDGE36 li4xl32 516x1 1i439 38x1 1246 12x270 INSTANT GLUE 1 xx Thick298 1 xx Thin298 2 xx Thick550 2 xx Thix550 BASS WDDD 316x316 3l6xli4 149318x3i8 49 316c12 49 316x34 56 14x14 67 li4x3iB 78 14x34 65 38 x 38 115 38x12 139 38x34 220 ll2xl2 300 12x34 78 91 100 117 138 207 262 48 26 30 38 46 60 42 49 80 60 70 90 90 100 8UNDLE DEALS 2016 x 3 x 36685 201i16x4 x361020 20332 x 3 x 36845 15332c4x36955 15-18x 3 x36715 10-18x4x36675 15-316 x3x36900 103i18 x4x 36810 101i4x3x36630 10114x4x36ass 1038 c 3 x 36850 538 x 4 x 36826 517x3x36540 512x4x36858 10-332 x4x48845 518x4x49485 a3i16 x 4 x 48585 5-1l4x4x48625 PINE STICKS3848 18x1B13 liSxli41623 18x3820 316x 3161724 310 x 382332 318x1234 l/4xl142637 14x383042 14x123447 36 x 38 37 52 SPRUCE STICKS 36 48 l8x 1815 18x1i41824 18x3820 316x 3162534 14x143148 li4x 383650 38 x384563 38x125570 12x126080 1l2x 3468 88 OPRUCETRIANGLE 36 38x3845 12x1261 3l4x3i477 LITE PLY 48 18 x 6 18 xl 2 150 300 HARD MAPLE 18 1i4x38 38 x 3i8 38x1i2 38 x3i4 1i2x34 40 45 50 58 68 BIRCH DGWELO36 1009 31611 1i414 51625 3832 3 PLYBIRCH46 164x12525 132x12425 116x12435 llBxl2450 PLY BIRCH 48 332 x 12670 18x12585 3l6x12585 14x12680 GRGGVED LG MGUNTS 12 ixchxs 318x314118140 38 x 3415321 40 12x3413/16145 Handling Charge$300 pay UPS Add $200 COD $300 extra PP APO FPO accent Visa Master Card nersnnal checks nr COG 41 8/ xxxix mcxc IR xci Micix cx flclc 515 511 February 198545 Miniature Aircraft Competitors Club Bensenville IL spon sor one-design contest Real Thing planes Since everyone flies th same kind plane pilot skill major factor determining winner left some competitors Above beautifully-crafted example Real Thing Debra Justice design good flier inexpensive fast build club much fun theyll try itagainwith different plane WE ARE 5HOOTING DOWN HIGHBALSAPRICES WITH SUPER QUALITYI Satisfaction Guaranteed Direct Only 48 V CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance must try 4-6 lb balsa LONE STAR MODELS 1623 57th St Lubbock TX 79412 Al Featuring fast service qualified people latest equipment including SPECTRUM ANAL YZER AM FM SIGNAL GENERATOR Call Steve Helms Sam Leonard Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessoriesall discounted prices Steve Helms 9Q4 478-6745 RADIO SOUTH~ AUTHORIZED SERVICE CENTEI FOR Kraft Pro LineFutaba I *iRI*IEIEI I--I --II 180 E Burgess Rd JR * Futaba Distributor er Inquiries Welcome * diameter cone air higher speed around fuselage friction ed dies turbulence rob moving air its effectiveness is particularly true models large round cowls radial dummy engines Tuibulence friction much reduced largediameter propeller because moving cone air lower velocity further away fuselage have heard stories overprop ping engine somehow injurious has proved true have using Supertigre 60 14-6 prop 16 years WW Sopwith engine good today new Wear actually reduced sixounce fuel tank needed 11000 rpm expect ST 60 use ounce fuel per minute experience shows rate A-ounce per minute 6000 rpm 14-6 prop engine runs cooler less internal friction minimize wear large prop permits slower realistic flight possible lightweight airplanes Heavier models will need airspeed full engine out put reasonable climb performance avoid risk stall after takeoff Impact damage heavier model always greater mishap element flight realism consid erably enhanced sound twostroke engine lower speed lowervolume exhaust gases muffler can restricted Sopwith muffler l-in-diameter aluminum tube solid end plate drilled A-in exit holes threading self-tapping screws several holes amount restriction can tuned best per formance least noise have heard comments Supertigre has sound very similar four-stroke engine model has flown often residential area neighbors arent aware engine sound ing up down often does both very quickly best thing situation slow airplane down very gentle colitrols try ease t6 landing Unfortunately usually occurs first flight airplane out trim anyway Survivors drama seldom have convinced airplane center mass needs moved forward proper range rest make sure its right next airplane center mass too far forward doesnt cause such dramatic conse quences lQt airplanes have bent because symptoms sim ple lot elevator necessary per form loops rolls flare airplatie landings airplane usually dinged landing pilot suddenly dis covets has stick way back airplane still sinking Mov- ing center mass back proper range will cure sinking feeling Bob Dolly Wischer S-221 Laphamkeep landing ear bottom side Peak Rd Delafield WI 53018of wing RC Aerobatics/Van Putte Continued page 45 thoughtlessly change airplanes center mass could mess up perfectly good airplane range locations airplanes center mass trimmable controlla ble stable range actually quite broad intentional reasoned move ment center mass often neces sary improve airplanes flying quali ties Beginners should always make sure airplanes center mass within range recommended plans dramatic consequence improper center mass location behind recommended area. An aft center mass can bring chills flier because airplane suddenly unstable pitch doesnt care whether its pitchRon Van Putte 111 Sleepy Qaks Rd Ft Walton Beach FL 32548 RC Old-Timers/Mathews Continued page 47 floats overhead Reduced 60% original size Pi1oh Buster shows enough potential hold its own AA Texaco competi tion full-sized fully-powered may well extraordinary Anyone has flying invited let us know goes Two approaches power runs credible explosion activity Y2A Tex aco a9ound world has introduced modelers joys RC OldTimer us thought lOssible Continised page 136 An better example quiet opera tion large prop diameters quarter-scale Aeronca K its Gemini 120 twin four-stroke engine recom mended 16-6 prop will yield 9000 rpm Hand-carved 18-7 props bring engine rpm down 6000 exhaust sound barely heard muffler difference between pro pellers negligible performance open throttle However Aeronca will fly near-scale speed about 4000 rpm large prop engine sound almost inaudible large engine just sips fuel throttle setting less ounce per minute carve props Because experimentation purchased props could quite expensive $10 $13 maple raw material prop costs about ior plus about hours time carving results arent satisfactory prop broken loss small February 198133 Pensacola FL 32503
Edition: Model Aviation - 1985/02
Page Numbers: 44, 45, 133
Radio Control Sport & Aerobatics Ron Van Putte NEW TECHNOLOGY few months back mentioned nasty fraying fiberglass can stopped using Jet other similar cyanoacrylate glue along line cloth cut works well stop fraying too much Jet applied along cutting line stiff area cloth will result making difficult use learned apply thin line Jet avoid problem got telephone call John Kenney operates Square Loop Hobby Center Greenwood MS John suggest ed spraying product called Fray Check along cutting line claimed worked didnt make fiberglass cloth stiff hes right dont know Fray Check available fabric stores nation wide its worth looking Since live Florida RC flying sea son lasts nearly 10 months may surprise some learn part Florida Panhandle gets some very cold weather wintertime Its uncommon have temperatures low teens some clear calm nights February Since dont like cold weather often dont fly RC January February means engines can sit couple months being run Corrosion experts tell us about nasty things can happen raw fuel left engine over winter loused up bearings several engines before learning treat properly before storage fact use same technique now time am finished flying day takes five minutes havent bearing failure since starting use Actually credit belongs Steve Rojecki day watched him empty fuel tank open throttle spray liberal slug WD-40 intake engine finished flying day proceeded attach glow driver connector put starter engine fired up ran few seconds stopped did three times same results After ward explained WD-40 pro pellant combustible As engine runs carries lubricant throughout engine including bearings engine stops propellant gone thats left lubricant Im above stealing good idea started using However after letting engine sit several months noticed kind stiff hard turn over WD-40 lubricant tends thicken get waxy after sitting long Apparently doesnt hurt anything makes engine hard start after long layoff Are beginning get pic ture about winter long layoff started looking suitable replace ment WD-40 found Its called Rus-Kil Formula 60 its made Mobile Paint Manufacturing Company Theodore AL claim its water-displacement lubricant actu ally displaces moisture parts works engines dont get stiff prolonged storage Actually suspect lot similar prod ucts around country Look some thing claims water-displace ment lubricant Try now may have replace bearings next spring Now contest season over Ive started couple new air planes first T-2A MK II finally managed get Tom Atkins Southeastern Air Crafters Marietta GA after waiting impatiently about year Tom has funny quirk wish kit manufacturers afflicted will send out kit meets high standards Production quality control problems fiberglass fuse lages high demand T-2A Southeast made take #$@ long get Later Ive finished flown Ill file report via pictures text other airplane Im building Elliptic stylish-looking Turnaround airplane produced US Eagle Inc Greenville TX Its balsa-and-ply wood beauty will have OS-l20 four-cycle up front finished design can powered either twocycle four-cycle engine chose four-cycle because airplane will fly slower constant speed two-cycle engine course nose shortened preclude larger size weight OS-l20 moving airplane center mass too far forward simple matter cut off nose pull fuselage sides since Elliptic has such long nose anyway Like T-2A MK II Ill report soon has finished flown way dont tell Ron Chidgey Van Putte building Turnaround airplaneit might too much shock Actually never said Id compete Turnaroundjust have Turnaround airplane under consideration should lessen shock winds blow hard gusty dont like fly Some fly areas its always windy wont give sympathy windy conditions spoil enjoyment flying dont Left Revenge Pattern filer Paul Verger Lafayette LA Keith Boudreau hold grid barbecue grill front him revenge against pencil-holding judges Despite clowning highest-scoring flight Right Sam Leonard Pensacola FL holds hottest designs current Pattern competition Atlanta distributed Golden Gate Hobbies design versatile competing successfully AMA Masters well FAt Turnaround events 44Model Aviation go out its warm can go sailing winters cold shoots down So what its cold windy dont want watch TV about RC car Have seen modern electric RC cars hadnt un til recently great available sources prices around $50 $200 up bought MRC Tamiya Grasshopper low-priced car simple bearings suspension really scoots Im having great time Its plenty fast already shock absorbers ball bearings high-current motor can purchased hop up though Grasshopper least expensive MRC cars pleasantly sur prised quality its design manufacture dont get RC car Christmas can always buy self little after-Christmas gift ward off post-holiday depression Besides theyre great maintaining hand/ eye coordination Earlier article mentioned getting center mass new Elliptic proper place occurred beginners have no idea importance proper location airplane center mass Its common beginners shift center mass airplane adding weight get rid up- down-elevator trim considering effect added weight airplane stability Shifting center mass airplane first done late 1800s Otto Lilienthal flying gliders Lilienthal controlled altitude gliders moving body changed location center mass What didnt realize was changing gliders trim stability killed himself doing consequences probably wont quite disastrous RC fliers Continued page 133 BALSA SHEETS364830 116x233 332 x 240 18 x243 316x248 114 x256 132x337 120x337 116x 3374931 332 x 3445837 18 x35471 316x36282 1i4 x3738861 5l6x385 38 x38812471 12 x3110156 34 x3165 116 x4687649 332 x4709456 iS x48010666 016x49312275 14 x411013484 38 x 4165225 12 x4228261 MATCHED SHEETS42 332x4100 1i8x4108 316x412C 1i4x4131 BALSA STICKS 116x14 116x38 l18x12 332x14 332x38 332x12 18x16 18x14 18x38 lRx 1i2 316x316 316x38 318x12 li4x114 li4x38 li4x12 l4x34 14x1 516x516 38x38 38x12 38 x34 38x1 12x1i2 li2x314 12x1 58 x88 34 x34 36 09 10 14 10 12 16 08 11 12 16 11 17 22 16 19 21 34 40 21 27 32 42 52 36 46 58 46 67 BALSA HOT LINE Call 806 745 6394 10am- 6pm Central Time 18 26 55 02 BALSA TRIANGLES 14 xl 4 38 x 38 1212 1' x 1' BALSA PLANKS lxi 1 x2 1 x3 1 x4 1 l2x3 1 12x4 2x2 2x3 2x4 3x3 3x4 TAPERED SHEETS 14x 2 1/4 x 3 3i8 x 2 3B x 3 12 x 3 36 25 30 34 45 55 36 88 150 200 280 275 360 225 325 435 495 688 36 65 85 68 98 120 LGNE STAR EPDXY S xxLixx-8R5 5 cix598 15 mix558 30 mix598 LIGHT 4-8 LB 36 132c3 120x3 116x3 332 x 3 18 x 3 316x3 14 x 2 38 x 3 12 x 3 34 x 3 lx 3 lilOx4 332 x 4 8 x 4 316 x 4 14 x 4 38 x 4 12 x 4 TRAILING EDGE36 li4xl32 516x1 1i439 38x1 1246 12x270 INSTANT GLUE 1 xx Thick298 1 xx Thin298 2 xx Thick550 2 xx Thix550 BASS WDDD 316x316 3l6xli4 149318x3i8 49 316c12 49 316x34 56 14x14 67 li4x3iB 78 14x34 65 38 x 38 115 38x12 139 38x34 220 ll2xl2 300 12x34 78 91 100 117 138 207 262 48 26 30 38 46 60 42 49 80 60 70 90 90 100 8UNDLE DEALS 2016 x 3 x 36685 201i16x4 x361020 20332 x 3 x 36845 15332c4x36955 15-18x 3 x36715 10-18x4x36675 15-316 x3x36900 103i18 x4x 36810 101i4x3x36630 10114x4x36ass 1038 c 3 x 36850 538 x 4 x 36826 517x3x36540 512x4x36858 10-332 x4x48845 518x4x49485 a3i16 x 4 x 48585 5-1l4x4x48625 PINE STICKS3848 18x1B13 liSxli41623 18x3820 316x 3161724 310 x 382332 318x1234 l/4xl142637 14x383042 14x123447 36 x 38 37 52 SPRUCE STICKS 36 48 l8x 1815 18x1i41824 18x3820 316x 3162534 14x143148 li4x 383650 38 x384563 38x125570 12x126080 1l2x 3468 88 OPRUCETRIANGLE 36 38x3845 12x1261 3l4x3i477 LITE PLY 48 18 x 6 18 xl 2 150 300 HARD MAPLE 18 1i4x38 38 x 3i8 38x1i2 38 x3i4 1i2x34 40 45 50 58 68 BIRCH DGWELO36 1009 31611 1i414 51625 3832 3 PLYBIRCH46 164x12525 132x12425 116x12435 llBxl2450 PLY BIRCH 48 332 x 12670 18x12585 3l6x12585 14x12680 GRGGVED LG MGUNTS 12 ixchxs 318x314118140 38 x 3415321 40 12x3413/16145 Handling Charge$300 pay UPS Add $200 COD $300 extra PP APO FPO accent Visa Master Card nersnnal checks nr COG 41 8/ xxxix mcxc IR xci Micix cx flclc 515 511 February 198545 Miniature Aircraft Competitors Club Bensenville IL spon sor one-design contest Real Thing planes Since everyone flies th same kind plane pilot skill major factor determining winner left some competitors Above beautifully-crafted example Real Thing Debra Justice design good flier inexpensive fast build club much fun theyll try itagainwith different plane WE ARE 5HOOTING DOWN HIGHBALSAPRICES WITH SUPER QUALITYI Satisfaction Guaranteed Direct Only 48 V CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance must try 4-6 lb balsa LONE STAR MODELS 1623 57th St Lubbock TX 79412 Al Featuring fast service qualified people latest equipment including SPECTRUM ANAL YZER AM FM SIGNAL GENERATOR Call Steve Helms Sam Leonard Tony Stiliman custom work competition needs stock complete hobby line specializing competition accessoriesall discounted prices Steve Helms 9Q4 478-6745 RADIO SOUTH~ AUTHORIZED SERVICE CENTEI FOR Kraft Pro LineFutaba I *iRI*IEIEI I--I --II 180 E Burgess Rd JR * Futaba Distributor er Inquiries Welcome * diameter cone air higher speed around fuselage friction ed dies turbulence rob moving air its effectiveness is particularly true models large round cowls radial dummy engines Tuibulence friction much reduced largediameter propeller because moving cone air lower velocity further away fuselage have heard stories overprop ping engine somehow injurious has proved true have using Supertigre 60 14-6 prop 16 years WW Sopwith engine good today new Wear actually reduced sixounce fuel tank needed 11000 rpm expect ST 60 use ounce fuel per minute experience shows rate A-ounce per minute 6000 rpm 14-6 prop engine runs cooler less internal friction minimize wear large prop permits slower realistic flight possible lightweight airplanes Heavier models will need airspeed full engine out put reasonable climb performance avoid risk stall after takeoff Impact damage heavier model always greater mishap element flight realism consid erably enhanced sound twostroke engine lower speed lowervolume exhaust gases muffler can restricted Sopwith muffler l-in-diameter aluminum tube solid end plate drilled A-in exit holes threading self-tapping screws several holes amount restriction can tuned best per formance least noise have heard comments Supertigre has sound very similar four-stroke engine model has flown often residential area neighbors arent aware engine sound ing up down often does both very quickly best thing situation slow airplane down very gentle colitrols try ease t6 landing Unfortunately usually occurs first flight airplane out trim anyway Survivors drama seldom have convinced airplane center mass needs moved forward proper range rest make sure its right next airplane center mass too far forward doesnt cause such dramatic conse quences lQt airplanes have bent because symptoms sim ple lot elevator necessary per form loops rolls flare airplatie landings airplane usually dinged landing pilot suddenly dis covets has stick way back airplane still sinking Mov- ing center mass back proper range will cure sinking feeling Bob Dolly Wischer S-221 Laphamkeep landing ear bottom side Peak Rd Delafield WI 53018of wing RC Aerobatics/Van Putte Continued page 45 thoughtlessly change airplanes center mass could mess up perfectly good airplane range locations airplanes center mass trimmable controlla ble stable range actually quite broad intentional reasoned move ment center mass often neces sary improve airplanes flying quali ties Beginners should always make sure airplanes center mass within range recommended plans dramatic consequence improper center mass location behind recommended area. An aft center mass can bring chills flier because airplane suddenly unstable pitch doesnt care whether its pitchRon Van Putte 111 Sleepy Qaks Rd Ft Walton Beach FL 32548 RC Old-Timers/Mathews Continued page 47 floats overhead Reduced 60% original size Pi1oh Buster shows enough potential hold its own AA Texaco competi tion full-sized fully-powered may well extraordinary Anyone has flying invited let us know goes Two approaches power runs credible explosion activity Y2A Tex aco a9ound world has introduced modelers joys RC OldTimer us thought lOssible Continised page 136 An better example quiet opera tion large prop diameters quarter-scale Aeronca K its Gemini 120 twin four-stroke engine recom mended 16-6 prop will yield 9000 rpm Hand-carved 18-7 props bring engine rpm down 6000 exhaust sound barely heard muffler difference between pro pellers negligible performance open throttle However Aeronca will fly near-scale speed about 4000 rpm large prop engine sound almost inaudible large engine just sips fuel throttle setting less ounce per minute carve props Because experimentation purchased props could quite expensive $10 $13 maple raw material prop costs about ior plus about hours time carving results arent satisfactory prop broken loss small February 198133 Pensacola FL 32503