Do have two 25 engines youd like put good CL Sport Scale model add details CL Scale get ready pick up some contest hardware THE PIPER TWIN COMANCHE came being late 1962 replacement Piper Apache first version Comanche designated PA-30 tested 1965 Comanche available six-seater could equipped tip tanks turbo-charged option Becoming sophisticated Comanche re-introduced 1971 Twin Comanche PA-39 C/R designa use Put Precision tion suffix new counter-rotating props counteracted aircrafts ten dency swing takeoff due engine torque Counter-rotation propellers achieved reversing direction starboard engine shaft Lycoming engineers reversed several components changed firing order cylinders thereby producing mirror image port engine Production Twin Comanche brought halt 1972 flood Pipers Lock Haven plant However during its hey day Twin Comanche held several speed distance records under able piloting Max Conrad also made state-of-the-art design contributions first civilian air craft swept fin all-flying sta bilizer stabilator Jeff Perez member 1982 US Control Line Scale World Championships Team chose Twin Comanche Scale modeling subject its aesthetic appeal because would earn him points judging single-engined craft just happened also Twin Comanche based Lamed KS Jeffs home town owned Reed Peters friend Jeffs Sometimes its convenience rather necessity thats mother invention Jeffs Sport Scale Twin Comanche pre 64 Model Aviation 0 C 0 U 0 U 1 0 0 0 designer Jeff Perez holds up plane us second Scale plane has built real success functioning stepping-stone Jeffs becoming US team member IyJv Design Jeff Perez Text Larry Kruse sented plans came being about four months after initial decision build Precision Scale Twin Comanche took another three months complete Both flew first time 1978 Nats Precision Scale ship 4th Sport Scale plane 2nd Jeff two planes represented real milestone modeling two respec tively second third Scale ships ever built score well early modeling career almost unheard three flight shots across top Mike Gretz Comanche very realistic quite stable flight altitudes of And carry Jeffs story step yond current subject 1982 US Scale Team entry B-17 placed 8th World Championships highest place US team member takes moment fully sink Jeff has accom plished after having built four Scale airplanes entire life return subject hand obvi ous Twin Comanche good ship anyone wanting enter world CL Scale flying features easy construction eye appeal judges automatic bonus points twin-engined aircraft Construction will hastened considerably pre-kitting much plane possible Cut out ribs formers spars plywood pieces prior beginning Glue Part Part B sequence wing should built first Attach nacelles easier alignment wing fuselage glued together Build wing panel time dihedral spar sheeting will glued later Pin down main wing spars over plan slip wing ribs position Use small cardboard triangle nl May 1983 65 Except needle valves sticking up its hard tell model its r-IIII swieme simple easy io execute ano very attractive Jetis planefull-size counterpart Engines well-hidden cowlings view done white green trim black letteringbut still have ample cooling ribs 900 spar tackglue place right now just drop thicker cyanoacrylate CyA glues such Super Jet Super Zap-A-Gap Slip trailing edge spar notches back rib glue place Note spar laps over itself Rib Station 6 leading edge piece next Constantly check alignment during early construction phases need pop rib off wing spars order align perfectly means Twisted wings fly funnyor sat isfied rib adjustment glue ribs permanently CyA tapered trailing edge pieces can added next finally tip blocks Use tip rib template gouge out opening wing tank block before carv Continued page 162 66 Model Aviation Cabin area detail shows windshield can molded heavygauge celluloid Side curtains made paper towels Cabin interior complete Precision Scale version Theres no need such extensive detailing Sport Scale model Jet molded antennas white silicone rubber Rigid ones need constant repairing due frequent damage suffer uowllng made fiberglass Cutouts engine cooling operation made outside flight circle nacelle full-flying stabilizer unique Scale ship control horns pushrods internal dont spoil scale lines plane stock manufactured spinner looks realistic model prop wooden 9-5 Y&O painted simulate aluminum Rudder warning light simple detail adds much overall good effect Control Line AEROBA TICS Wynn Paul GOOD NEWS Old Time Stunt fliers 1983 Nationals will probably have fantastic tumout OTS especially since Massachu setts location will attract Stunt fliers New York-New Jersey-New England area OTS very popular Event Directorof CL Precision Aerobatics Lanny Shorts trying lure John Miske Event Director Old-Time event will probably held Tuesday Nationals week Speaking Event Directors such about stepping up volunteering help Nationals Contact Lanny 661 Louie Ave Lodi CA 95240 Tel 209 368-9492 needs Stunt judges recorders pit workers pull-testers go-fers sign makers setup cleanup persons circle marshals general helpers moving Junior Senior flying Friday have elimi nated day judging however will need judges Friday handle both Open semi finals younger set Lanny hopes some Open fliers qualify Friday may want help Junior-Senior flying day speaking older things Fox 35 Stunt engine has continuous pro duction 34 years still very popular engine can very good beginning engine Stunt Jim McClellan Burlingame CA Sig Chipmunk Its finished MonoKote Pactra Formula U paint uses OS Max 35 proper plane/engine combination can go way victors stand old General Atlanta Stunt Conspiracy Tom Dixon out car racing business back model airplane world Tom has long-time advocate 35-size airplanes has spent lot time reworking Fox 35s Scott Bair research engineer Georgia Tech have experimented altering crank shaft Fox using different heads compression ratios Regarding crankshaft Tom advises balanc ing part lower vibration smoother op eration Tom also substitutes various heads older Fox 36s 36X engines dome recut give power Fox 35 Stunt has put together four packages rework modi fications engine can meet com petition needs pocketbook almost modeler Stage package includes new Fox 35 engine has disassembled put back together careful fitting parts lapping piston sleeve new needle valve asContinued page 164 68 Model Aviation Matthew Bauer dad start repairing Matts modified Top Flite Tutor after wind caught 1982 Nats flew again photos Larry Kruse wrnay urTnowsKls executioner nas janrasuc rinlan wynn going feature descriptions Windys finishing methods future columns model has ST 60 printing cowl just above trim stripe reads Custom Engine Parts Kinetic Analysis connecting rods made best materials available designed give long service snd eliminate rod breakage modern high-Perfor mance model engines Used leading aircraft boat car racers hobbyists Rods available popular model engines Look RPM new innovative products proven performance records Richardson Precision Machining Inc 5070 Golden Dr. San Jose CA 9512914081257-7059 162 Model Aviation Late items Ted Davey gent has producing DSC retrieval system has new winch market called POWRTOW photo shows its low-slung look Dave claims can launch ther lightest Two-Meter ship can also haul Il-lb cross-country bird air ease winch features solenoid-protected foot switch 1800 ft 15-lb-test line parachute hall bearing line swivel welded frame line drum low profile measures 235 x 12 x 9 weight less battery 40 lb further infor mation write Davey Systems Corp Wood Lane Malvem PA 19355 phone 215 644-0692 Two-Meter World Cup fourth running 2MWC will hosted Modesto Radio Control Club Five identical winches have fashioned event past will man-on-man event Entry forms will mailed out May l983 entries will close May 31 l983 event scheduled June 11-12 1983 further information contact Mr Ed Sb bod 9626 Jellico Ave Northridge CA 91325 phone 2l3 349-4758 Good Lift Doi Pruss 131 E Penninglon Ln Plainfleld IL 60544 Comanche/Perez-Kruse Continued page 67 ing shape both panels complete stage join dihedral spar liber ally epoxied place main landing gear legs bent 5/32-in wire I-bolted spar locations shown Tweak bit necessary make sure wheels track parallel fashion Sport Scale gear shown plans sake simplicity however Jeff chose machine front landing gear fork Precision Scale ship key stock attach setscrew two L-shaped brackets main gear done same fashion After main frame wing put together place nacelle assembly di rectly over leading edge main spar good glue bond can obtained tween pieces particularly leading edge Epoxy nacelles wing checking carefully adjusting necessary assure alignment sembly cures Notice Jeff didnt find necessary use engine thrust offset order keep plane out lines Drill necessary mounting holes temporarily mount engines tanks position Now bellcrank platform can ep oxied place Roberts upright bellcrank bolted-on Route braided cable Gold N Rod its plastic casing through wing rib spar structure and nacelle dual throttle controls 1/16-in music wire pushrod wrapped soldered braided cable attaches throttle arm bellcrank will necessary drill hole just inside original third line location order attach pushrod Since both engines operating same throttle cable carburetor control horns will have placed opposite other Otherwise high setting engine will low setting other Check assembly several times make sure its binding hanging up point particularly conscious possibility muffler interfering carburetor control horn pushrod up position After three lead-outs strung bellcrank sheet lifting surfaces wing 1/16 balsa nacelle areas will need planked some filling-in small balsa blocks will probably neces sary Cowls both engines can laid up fiberglass over carved form using balloon method molding stabilizer rudder both cut /4-in sheet sanded airfoil shape stabilizer presents special case because must mounted fuselage unit along its maple bearing block Re inforce weak spot rear stab shown inset plywood doublers mounting block can drilled out 5/32-in ID brass tube will serve bushing 5/32-in music wire control horn will need solder horn itself music wire slip wire through maple block bushing bend the top view however mounted conventional location wing flaps [6 [I7I7IDealer inquiries also mixed provide aileron action Both PIRANHA GAMMA have foam liii LFIi\j1J Incinvitedwings wood sheeting EconoKote covering High performance modeland workmanship flawless about engine connecting rodsthese birds information comes Get install dont take off Ken Willard RCM SERVO GARD SERVO GARD monitors airborne flight battery peek voltage well radio sigesi received transmitter receiver malfunction detected pan system SERVO GARD reduces throttle automatically ample time before battery failure safely land model SPECIFICATIONS Size Unit installed KPS-14 servo case foreasy installation Just plug throttle servo output Weight Approx 1 oz Sensitivity Accurate within 02 Volts Servo Pulse Unit shipped positive poise systems negative pulse available upon request SERVO GARD comes complete pre-wired pigtails servo connectors choice installed Ispecify connector type order SEE YOUR DEAL ER OR ORDER DIRECT DEALER INOUIRIES IN VI TED Price $3795 Postpaid ISpecify connector type positive negative pulse ordering ENDORSED BY THE SPIRIT OF AMERICA SHOW TEAM LIMA OHIO RF Enterprises 106 N Main St Arlington OH 45814 419 365-5360 arms horn approximate shape shown plans bottom stab should slotted accept control horn wire filled mi croballoons epoxy strength completed stab assembly can set ide until needed fuselage rudder will require little sanding shape however rudder light does enhance planes scale effect con siderably simulated light can filed shape red Lucite plastic fitted aluminum tube ring its base fuselage probably important difficult construction phase aircraft Since keel crutch former assembly would well worth time first construct simple jig aid con struction jig should have base /4-in /2-in plywood approximately long fuselage about 6 wide Scribe lines fuselage formers would located along jig base glue nail vertical pieces / X 6 x 6 plywood base vertical pieces will serve hold formers correct angle insertion keel crutch Its probably best cut vertical slot about /2-in wide center former holder allow clearance keel nose gear should mounted Former before commencing stallation keel crutch Use rubber cement attach formers jig assembly reposition Plank fuselage using alternating strips balsa first side directly opposite order avoid pulling fuse lage off center causing develop torsional twist As wing constantly check alignment As planking pro gresses cut away areas necessary mount both stabilizer wing soon fuselage strong enough permit handling excessive bending possible misalignment Epoxy wing stabilizer place checking position both relative other fuselage Hook up stab pushrod adjust its length achieve neutral stab setting bellcrank neutral After planking complete window areas can cut out temporarily fitted celluloid Temporarily install soft balsa block windshield area carve shape use form molding actual windshield Sigs heavy-gauge clear plastic can used form wind shield Heating large piece plastic PLANES 82/83 IMA Plans Handbooks No 1 Free Flight Planes No 3 Trains Steam Engines No 4 Radio Control Planes No 5 Scale Drawings Planes Radio Modeller Planbook R/C FF Scale Any ONE above PLUS TAUBMAN catalog planes $275 plus $125 3rd class domestic ship ping Can Mex overseas surface mail overseas airmail $400 ONE plans handbook add $200 per EACH plus $ 50 shipping * ** * * * * * * * * * BOATS TAUBMANS 83/84 Boat catalog whopping 140 pages 1000 illustrated plans books galore some interes j-ting stuff PLUS 82/83 IMA Plans Handbook No 2 boats cars $350 plus $150 domestic 3rd class shipping Can Mex overseas surface mail $250 Air mail Eur & So Amer $700 Pac area $900 interested warships liners merchant marine send additional $1 O0forthe Wiswesser catalog sending inquiries please include aSASE TAUBMAN PLANS SERVICE 11 College Drive Box 4G Dept MA Jersey City NJ 07305 May1983 163 formers necessary align keel crutch installation proceeds entire fuselage covered /8 EW FOR 83 balsa planking however wider pieces balsa can used fuselage top bottom area nearly flat may helpful soak planking strips hot water liberally laced ammonia make pliable enough negotiate curves fuselage particularly toward nose area over electric stove gloved hands please until begins smoke will make pliable enough jam down over balsa windshield form make good compound curve may take several tries get acceptable windshield patient Finishing detailing Sand entire airplane carefully Fillets can made Sig Epoxolite oras Jeff didwith poly ester resin microballoons Pits dings dents cracks between planking strips can also filled resin microballoon mixture vinyl spackling compound such DAP Apply thin coat Hobbypoxy Quick Prep Resin let cure Scuff-sand first coat apply second thin coat -J Apply heavy grade silkspan silk second coat still wet pulling out wrinkles surfaces should covered either silk silkspan Jeff used com bination two sake economysilk areas needing extra strength silkspan large flat sur faces Tack down edges may have come unstuck let second coat resin cure Now sanding brush third coat resin using full brush attempt flow resin smoothly can probably wont too smooth wetsand carefully 150 200-grit paper Add fourth coat resin time definite glassy sheen should evident Wet-sand last coat 320-grit paper spray light coat primer Jeff used automotive enamel color coats consequently used automotive primer base coat choose Hob bypoxy K&8 Super Poxy alterna tive use respective primers assure compatibility Wet-sand primer coat 400-grit spray white base coat light applications nec essary create good surface trim color use masking tape mask off trim lines very careful remove underlying resin prone let go paint pull tape off too hard too sharply Rub out final finish good com mercial grade rubbing compound ap ply several coats automotive wax pro tect hard work windows windshield landing gear doors other bits pieces trim can added now keep various antennas breaking off Jeff molded silicone rubber attached fuselage See CL Scale column October 1978 Model Aviation details Side curtains windows made folded paper towels Logos hand-painted press type letters art supply store spelled out No Step warnings Flying plane has built per plans instructions will very light easy manage air However single-engine performance marginal best certain both engines synchro nized nearly possible ear prepare first flight Twin-engine airplanes little like bi planes carry definite magical properties air sound twinis singing unison around circle will automatically gather crowd time fly Good luck version Twin Comanche Reference Sources Francis Devon Mr Piper Cubs Iowa State University Press Ames IA 1976 pp 178 179 188 194 195 202 Janes Worlds Aircraft 1972-73 John R Taylor ed McGraw-Hill Book Company New York NY p 406 Janes Worlds Aircraft 1973-74 John R Taylor ed McGraw-Hill Book Company New York NY pp 409-410 Janes Encyclopedia Aviation Vol 5 M J H Taylor ed Grolier Company Danbury CT 1980 pp 896 898 CL Aerobatics/Paul Continued oaoe 68 sembly substituting Allen-head screws head backplate modifying engine take Fox Stunt Special muffler strap con nection will distort crankcase Price Stage includes new engine $30 plus $250 shipping Stage II includes Stage plus fullybalanced crankshaft lower vibration smoother operation Price Stage II cludes new Fox 35 engine $35 plus $250 164 Model Aviation TO ORDER PLEASE PRINT NAME ADDRESS Send Check Money Order Ipavable Consumers Guide CONSUMERSGUIDE P0n0X376 GREATFALLSVA 22066 Check Money Order $660 1495 postage/handlingl Overseas Orders $495 ISurface Mail OR $554 lAir Mail Dealer Inquiries Welcome Write Details Special Bulk Discounts AMA Clubs e Details
Edition: Model Aviation - 1983/05
Page Numbers: 64, 65, 66, 68, 162, 163, 164
Do have two 25 engines youd like put good CL Sport Scale model add details CL Scale get ready pick up some contest hardware THE PIPER TWIN COMANCHE came being late 1962 replacement Piper Apache first version Comanche designated PA-30 tested 1965 Comanche available six-seater could equipped tip tanks turbo-charged option Becoming sophisticated Comanche re-introduced 1971 Twin Comanche PA-39 C/R designa use Put Precision tion suffix new counter-rotating props counteracted aircrafts ten dency swing takeoff due engine torque Counter-rotation propellers achieved reversing direction starboard engine shaft Lycoming engineers reversed several components changed firing order cylinders thereby producing mirror image port engine Production Twin Comanche brought halt 1972 flood Pipers Lock Haven plant However during its hey day Twin Comanche held several speed distance records under able piloting Max Conrad also made state-of-the-art design contributions first civilian air craft swept fin all-flying sta bilizer stabilator Jeff Perez member 1982 US Control Line Scale World Championships Team chose Twin Comanche Scale modeling subject its aesthetic appeal because would earn him points judging single-engined craft just happened also Twin Comanche based Lamed KS Jeffs home town owned Reed Peters friend Jeffs Sometimes its convenience rather necessity thats mother invention Jeffs Sport Scale Twin Comanche pre 64 Model Aviation 0 C 0 U 0 U 1 0 0 0 designer Jeff Perez holds up plane us second Scale plane has built real success functioning stepping-stone Jeffs becoming US team member IyJv Design Jeff Perez Text Larry Kruse sented plans came being about four months after initial decision build Precision Scale Twin Comanche took another three months complete Both flew first time 1978 Nats Precision Scale ship 4th Sport Scale plane 2nd Jeff two planes represented real milestone modeling two respec tively second third Scale ships ever built score well early modeling career almost unheard three flight shots across top Mike Gretz Comanche very realistic quite stable flight altitudes of And carry Jeffs story step yond current subject 1982 US Scale Team entry B-17 placed 8th World Championships highest place US team member takes moment fully sink Jeff has accom plished after having built four Scale airplanes entire life return subject hand obvi ous Twin Comanche good ship anyone wanting enter world CL Scale flying features easy construction eye appeal judges automatic bonus points twin-engined aircraft Construction will hastened considerably pre-kitting much plane possible Cut out ribs formers spars plywood pieces prior beginning Glue Part Part B sequence wing should built first Attach nacelles easier alignment wing fuselage glued together Build wing panel time dihedral spar sheeting will glued later Pin down main wing spars over plan slip wing ribs position Use small cardboard triangle nl May 1983 65 Except needle valves sticking up its hard tell model its r-IIII swieme simple easy io execute ano very attractive Jetis planefull-size counterpart Engines well-hidden cowlings view done white green trim black letteringbut still have ample cooling ribs 900 spar tackglue place right now just drop thicker cyanoacrylate CyA glues such Super Jet Super Zap-A-Gap Slip trailing edge spar notches back rib glue place Note spar laps over itself Rib Station 6 leading edge piece next Constantly check alignment during early construction phases need pop rib off wing spars order align perfectly means Twisted wings fly funnyor sat isfied rib adjustment glue ribs permanently CyA tapered trailing edge pieces can added next finally tip blocks Use tip rib template gouge out opening wing tank block before carv Continued page 162 66 Model Aviation Cabin area detail shows windshield can molded heavygauge celluloid Side curtains made paper towels Cabin interior complete Precision Scale version Theres no need such extensive detailing Sport Scale model Jet molded antennas white silicone rubber Rigid ones need constant repairing due frequent damage suffer uowllng made fiberglass Cutouts engine cooling operation made outside flight circle nacelle full-flying stabilizer unique Scale ship control horns pushrods internal dont spoil scale lines plane stock manufactured spinner looks realistic model prop wooden 9-5 Y&O painted simulate aluminum Rudder warning light simple detail adds much overall good effect Control Line AEROBA TICS Wynn Paul GOOD NEWS Old Time Stunt fliers 1983 Nationals will probably have fantastic tumout OTS especially since Massachu setts location will attract Stunt fliers New York-New Jersey-New England area OTS very popular Event Directorof CL Precision Aerobatics Lanny Shorts trying lure John Miske Event Director Old-Time event will probably held Tuesday Nationals week Speaking Event Directors such about stepping up volunteering help Nationals Contact Lanny 661 Louie Ave Lodi CA 95240 Tel 209 368-9492 needs Stunt judges recorders pit workers pull-testers go-fers sign makers setup cleanup persons circle marshals general helpers moving Junior Senior flying Friday have elimi nated day judging however will need judges Friday handle both Open semi finals younger set Lanny hopes some Open fliers qualify Friday may want help Junior-Senior flying day speaking older things Fox 35 Stunt engine has continuous pro duction 34 years still very popular engine can very good beginning engine Stunt Jim McClellan Burlingame CA Sig Chipmunk Its finished MonoKote Pactra Formula U paint uses OS Max 35 proper plane/engine combination can go way victors stand old General Atlanta Stunt Conspiracy Tom Dixon out car racing business back model airplane world Tom has long-time advocate 35-size airplanes has spent lot time reworking Fox 35s Scott Bair research engineer Georgia Tech have experimented altering crank shaft Fox using different heads compression ratios Regarding crankshaft Tom advises balanc ing part lower vibration smoother op eration Tom also substitutes various heads older Fox 36s 36X engines dome recut give power Fox 35 Stunt has put together four packages rework modi fications engine can meet com petition needs pocketbook almost modeler Stage package includes new Fox 35 engine has disassembled put back together careful fitting parts lapping piston sleeve new needle valve asContinued page 164 68 Model Aviation Matthew Bauer dad start repairing Matts modified Top Flite Tutor after wind caught 1982 Nats flew again photos Larry Kruse wrnay urTnowsKls executioner nas janrasuc rinlan wynn going feature descriptions Windys finishing methods future columns model has ST 60 printing cowl just above trim stripe reads Custom Engine Parts Kinetic Analysis connecting rods made best materials available designed give long service snd eliminate rod breakage modern high-Perfor mance model engines Used leading aircraft boat car racers hobbyists Rods available popular model engines Look RPM new innovative products proven performance records Richardson Precision Machining Inc 5070 Golden Dr. San Jose CA 9512914081257-7059 162 Model Aviation Late items Ted Davey gent has producing DSC retrieval system has new winch market called POWRTOW photo shows its low-slung look Dave claims can launch ther lightest Two-Meter ship can also haul Il-lb cross-country bird air ease winch features solenoid-protected foot switch 1800 ft 15-lb-test line parachute hall bearing line swivel welded frame line drum low profile measures 235 x 12 x 9 weight less battery 40 lb further infor mation write Davey Systems Corp Wood Lane Malvem PA 19355 phone 215 644-0692 Two-Meter World Cup fourth running 2MWC will hosted Modesto Radio Control Club Five identical winches have fashioned event past will man-on-man event Entry forms will mailed out May l983 entries will close May 31 l983 event scheduled June 11-12 1983 further information contact Mr Ed Sb bod 9626 Jellico Ave Northridge CA 91325 phone 2l3 349-4758 Good Lift Doi Pruss 131 E Penninglon Ln Plainfleld IL 60544 Comanche/Perez-Kruse Continued page 67 ing shape both panels complete stage join dihedral spar liber ally epoxied place main landing gear legs bent 5/32-in wire I-bolted spar locations shown Tweak bit necessary make sure wheels track parallel fashion Sport Scale gear shown plans sake simplicity however Jeff chose machine front landing gear fork Precision Scale ship key stock attach setscrew two L-shaped brackets main gear done same fashion After main frame wing put together place nacelle assembly di rectly over leading edge main spar good glue bond can obtained tween pieces particularly leading edge Epoxy nacelles wing checking carefully adjusting necessary assure alignment sembly cures Notice Jeff didnt find necessary use engine thrust offset order keep plane out lines Drill necessary mounting holes temporarily mount engines tanks position Now bellcrank platform can ep oxied place Roberts upright bellcrank bolted-on Route braided cable Gold N Rod its plastic casing through wing rib spar structure and nacelle dual throttle controls 1/16-in music wire pushrod wrapped soldered braided cable attaches throttle arm bellcrank will necessary drill hole just inside original third line location order attach pushrod Since both engines operating same throttle cable carburetor control horns will have placed opposite other Otherwise high setting engine will low setting other Check assembly several times make sure its binding hanging up point particularly conscious possibility muffler interfering carburetor control horn pushrod up position After three lead-outs strung bellcrank sheet lifting surfaces wing 1/16 balsa nacelle areas will need planked some filling-in small balsa blocks will probably neces sary Cowls both engines can laid up fiberglass over carved form using balloon method molding stabilizer rudder both cut /4-in sheet sanded airfoil shape stabilizer presents special case because must mounted fuselage unit along its maple bearing block Re inforce weak spot rear stab shown inset plywood doublers mounting block can drilled out 5/32-in ID brass tube will serve bushing 5/32-in music wire control horn will need solder horn itself music wire slip wire through maple block bushing bend the top view however mounted conventional location wing flaps [6 [I7I7IDealer inquiries also mixed provide aileron action Both PIRANHA GAMMA have foam liii LFIi\j1J Incinvitedwings wood sheeting EconoKote covering High performance modeland workmanship flawless about engine connecting rodsthese birds information comes Get install dont take off Ken Willard RCM SERVO GARD SERVO GARD monitors airborne flight battery peek voltage well radio sigesi received transmitter receiver malfunction detected pan system SERVO GARD reduces throttle automatically ample time before battery failure safely land model SPECIFICATIONS Size Unit installed KPS-14 servo case foreasy installation Just plug throttle servo output Weight Approx 1 oz Sensitivity Accurate within 02 Volts Servo Pulse Unit shipped positive poise systems negative pulse available upon request SERVO GARD comes complete pre-wired pigtails servo connectors choice installed Ispecify connector type order SEE YOUR DEAL ER OR ORDER DIRECT DEALER INOUIRIES IN VI TED Price $3795 Postpaid ISpecify connector type positive negative pulse ordering ENDORSED BY THE SPIRIT OF AMERICA SHOW TEAM LIMA OHIO RF Enterprises 106 N Main St Arlington OH 45814 419 365-5360 arms horn approximate shape shown plans bottom stab should slotted accept control horn wire filled mi croballoons epoxy strength completed stab assembly can set ide until needed fuselage rudder will require little sanding shape however rudder light does enhance planes scale effect con siderably simulated light can filed shape red Lucite plastic fitted aluminum tube ring its base fuselage probably important difficult construction phase aircraft Since keel crutch former assembly would well worth time first construct simple jig aid con struction jig should have base /4-in /2-in plywood approximately long fuselage about 6 wide Scribe lines fuselage formers would located along jig base glue nail vertical pieces / X 6 x 6 plywood base vertical pieces will serve hold formers correct angle insertion keel crutch Its probably best cut vertical slot about /2-in wide center former holder allow clearance keel nose gear should mounted Former before commencing stallation keel crutch Use rubber cement attach formers jig assembly reposition Plank fuselage using alternating strips balsa first side directly opposite order avoid pulling fuse lage off center causing develop torsional twist As wing constantly check alignment As planking pro gresses cut away areas necessary mount both stabilizer wing soon fuselage strong enough permit handling excessive bending possible misalignment Epoxy wing stabilizer place checking position both relative other fuselage Hook up stab pushrod adjust its length achieve neutral stab setting bellcrank neutral After planking complete window areas can cut out temporarily fitted celluloid Temporarily install soft balsa block windshield area carve shape use form molding actual windshield Sigs heavy-gauge clear plastic can used form wind shield Heating large piece plastic PLANES 82/83 IMA Plans Handbooks No 1 Free Flight Planes No 3 Trains Steam Engines No 4 Radio Control Planes No 5 Scale Drawings Planes Radio Modeller Planbook R/C FF Scale Any ONE above PLUS TAUBMAN catalog planes $275 plus $125 3rd class domestic ship ping Can Mex overseas surface mail overseas airmail $400 ONE plans handbook add $200 per EACH plus $ 50 shipping * ** * * * * * * * * * BOATS TAUBMANS 83/84 Boat catalog whopping 140 pages 1000 illustrated plans books galore some interes j-ting stuff PLUS 82/83 IMA Plans Handbook No 2 boats cars $350 plus $150 domestic 3rd class shipping Can Mex overseas surface mail $250 Air mail Eur & So Amer $700 Pac area $900 interested warships liners merchant marine send additional $1 O0forthe Wiswesser catalog sending inquiries please include aSASE TAUBMAN PLANS SERVICE 11 College Drive Box 4G Dept MA Jersey City NJ 07305 May1983 163 formers necessary align keel crutch installation proceeds entire fuselage covered /8 EW FOR 83 balsa planking however wider pieces balsa can used fuselage top bottom area nearly flat may helpful soak planking strips hot water liberally laced ammonia make pliable enough negotiate curves fuselage particularly toward nose area over electric stove gloved hands please until begins smoke will make pliable enough jam down over balsa windshield form make good compound curve may take several tries get acceptable windshield patient Finishing detailing Sand entire airplane carefully Fillets can made Sig Epoxolite oras Jeff didwith poly ester resin microballoons Pits dings dents cracks between planking strips can also filled resin microballoon mixture vinyl spackling compound such DAP Apply thin coat Hobbypoxy Quick Prep Resin let cure Scuff-sand first coat apply second thin coat -J Apply heavy grade silkspan silk second coat still wet pulling out wrinkles surfaces should covered either silk silkspan Jeff used com bination two sake economysilk areas needing extra strength silkspan large flat sur faces Tack down edges may have come unstuck let second coat resin cure Now sanding brush third coat resin using full brush attempt flow resin smoothly can probably wont too smooth wetsand carefully 150 200-grit paper Add fourth coat resin time definite glassy sheen should evident Wet-sand last coat 320-grit paper spray light coat primer Jeff used automotive enamel color coats consequently used automotive primer base coat choose Hob bypoxy K&8 Super Poxy alterna tive use respective primers assure compatibility Wet-sand primer coat 400-grit spray white base coat light applications nec essary create good surface trim color use masking tape mask off trim lines very careful remove underlying resin prone let go paint pull tape off too hard too sharply Rub out final finish good com mercial grade rubbing compound ap ply several coats automotive wax pro tect hard work windows windshield landing gear doors other bits pieces trim can added now keep various antennas breaking off Jeff molded silicone rubber attached fuselage See CL Scale column October 1978 Model Aviation details Side curtains windows made folded paper towels Logos hand-painted press type letters art supply store spelled out No Step warnings Flying plane has built per plans instructions will very light easy manage air However single-engine performance marginal best certain both engines synchro nized nearly possible ear prepare first flight Twin-engine airplanes little like bi planes carry definite magical properties air sound twinis singing unison around circle will automatically gather crowd time fly Good luck version Twin Comanche Reference Sources Francis Devon Mr Piper Cubs Iowa State University Press Ames IA 1976 pp 178 179 188 194 195 202 Janes Worlds Aircraft 1972-73 John R Taylor ed McGraw-Hill Book Company New York NY p 406 Janes Worlds Aircraft 1973-74 John R Taylor ed McGraw-Hill Book Company New York NY pp 409-410 Janes Encyclopedia Aviation Vol 5 M J H Taylor ed Grolier Company Danbury CT 1980 pp 896 898 CL Aerobatics/Paul Continued oaoe 68 sembly substituting Allen-head screws head backplate modifying engine take Fox Stunt Special muffler strap con nection will distort crankcase Price Stage includes new engine $30 plus $250 shipping Stage II includes Stage plus fullybalanced crankshaft lower vibration smoother operation Price Stage II cludes new Fox 35 engine $35 plus $250 164 Model Aviation TO ORDER PLEASE PRINT NAME ADDRESS Send Check Money Order Ipavable Consumers Guide CONSUMERSGUIDE P0n0X376 GREATFALLSVA 22066 Check Money Order $660 1495 postage/handlingl Overseas Orders $495 ISurface Mail OR $554 lAir Mail Dealer Inquiries Welcome Write Details Special Bulk Discounts AMA Clubs e Details
Edition: Model Aviation - 1983/05
Page Numbers: 64, 65, 66, 68, 162, 163, 164
Do have two 25 engines youd like put good CL Sport Scale model add details CL Scale get ready pick up some contest hardware THE PIPER TWIN COMANCHE came being late 1962 replacement Piper Apache first version Comanche designated PA-30 tested 1965 Comanche available six-seater could equipped tip tanks turbo-charged option Becoming sophisticated Comanche re-introduced 1971 Twin Comanche PA-39 C/R designa use Put Precision tion suffix new counter-rotating props counteracted aircrafts ten dency swing takeoff due engine torque Counter-rotation propellers achieved reversing direction starboard engine shaft Lycoming engineers reversed several components changed firing order cylinders thereby producing mirror image port engine Production Twin Comanche brought halt 1972 flood Pipers Lock Haven plant However during its hey day Twin Comanche held several speed distance records under able piloting Max Conrad also made state-of-the-art design contributions first civilian air craft swept fin all-flying sta bilizer stabilator Jeff Perez member 1982 US Control Line Scale World Championships Team chose Twin Comanche Scale modeling subject its aesthetic appeal because would earn him points judging single-engined craft just happened also Twin Comanche based Lamed KS Jeffs home town owned Reed Peters friend Jeffs Sometimes its convenience rather necessity thats mother invention Jeffs Sport Scale Twin Comanche pre 64 Model Aviation 0 C 0 U 0 U 1 0 0 0 designer Jeff Perez holds up plane us second Scale plane has built real success functioning stepping-stone Jeffs becoming US team member IyJv Design Jeff Perez Text Larry Kruse sented plans came being about four months after initial decision build Precision Scale Twin Comanche took another three months complete Both flew first time 1978 Nats Precision Scale ship 4th Sport Scale plane 2nd Jeff two planes represented real milestone modeling two respec tively second third Scale ships ever built score well early modeling career almost unheard three flight shots across top Mike Gretz Comanche very realistic quite stable flight altitudes of And carry Jeffs story step yond current subject 1982 US Scale Team entry B-17 placed 8th World Championships highest place US team member takes moment fully sink Jeff has accom plished after having built four Scale airplanes entire life return subject hand obvi ous Twin Comanche good ship anyone wanting enter world CL Scale flying features easy construction eye appeal judges automatic bonus points twin-engined aircraft Construction will hastened considerably pre-kitting much plane possible Cut out ribs formers spars plywood pieces prior beginning Glue Part Part B sequence wing should built first Attach nacelles easier alignment wing fuselage glued together Build wing panel time dihedral spar sheeting will glued later Pin down main wing spars over plan slip wing ribs position Use small cardboard triangle nl May 1983 65 Except needle valves sticking up its hard tell model its r-IIII swieme simple easy io execute ano very attractive Jetis planefull-size counterpart Engines well-hidden cowlings view done white green trim black letteringbut still have ample cooling ribs 900 spar tackglue place right now just drop thicker cyanoacrylate CyA glues such Super Jet Super Zap-A-Gap Slip trailing edge spar notches back rib glue place Note spar laps over itself Rib Station 6 leading edge piece next Constantly check alignment during early construction phases need pop rib off wing spars order align perfectly means Twisted wings fly funnyor sat isfied rib adjustment glue ribs permanently CyA tapered trailing edge pieces can added next finally tip blocks Use tip rib template gouge out opening wing tank block before carv Continued page 162 66 Model Aviation Cabin area detail shows windshield can molded heavygauge celluloid Side curtains made paper towels Cabin interior complete Precision Scale version Theres no need such extensive detailing Sport Scale model Jet molded antennas white silicone rubber Rigid ones need constant repairing due frequent damage suffer uowllng made fiberglass Cutouts engine cooling operation made outside flight circle nacelle full-flying stabilizer unique Scale ship control horns pushrods internal dont spoil scale lines plane stock manufactured spinner looks realistic model prop wooden 9-5 Y&O painted simulate aluminum Rudder warning light simple detail adds much overall good effect Control Line AEROBA TICS Wynn Paul GOOD NEWS Old Time Stunt fliers 1983 Nationals will probably have fantastic tumout OTS especially since Massachu setts location will attract Stunt fliers New York-New Jersey-New England area OTS very popular Event Directorof CL Precision Aerobatics Lanny Shorts trying lure John Miske Event Director Old-Time event will probably held Tuesday Nationals week Speaking Event Directors such about stepping up volunteering help Nationals Contact Lanny 661 Louie Ave Lodi CA 95240 Tel 209 368-9492 needs Stunt judges recorders pit workers pull-testers go-fers sign makers setup cleanup persons circle marshals general helpers moving Junior Senior flying Friday have elimi nated day judging however will need judges Friday handle both Open semi finals younger set Lanny hopes some Open fliers qualify Friday may want help Junior-Senior flying day speaking older things Fox 35 Stunt engine has continuous pro duction 34 years still very popular engine can very good beginning engine Stunt Jim McClellan Burlingame CA Sig Chipmunk Its finished MonoKote Pactra Formula U paint uses OS Max 35 proper plane/engine combination can go way victors stand old General Atlanta Stunt Conspiracy Tom Dixon out car racing business back model airplane world Tom has long-time advocate 35-size airplanes has spent lot time reworking Fox 35s Scott Bair research engineer Georgia Tech have experimented altering crank shaft Fox using different heads compression ratios Regarding crankshaft Tom advises balanc ing part lower vibration smoother op eration Tom also substitutes various heads older Fox 36s 36X engines dome recut give power Fox 35 Stunt has put together four packages rework modi fications engine can meet com petition needs pocketbook almost modeler Stage package includes new Fox 35 engine has disassembled put back together careful fitting parts lapping piston sleeve new needle valve asContinued page 164 68 Model Aviation Matthew Bauer dad start repairing Matts modified Top Flite Tutor after wind caught 1982 Nats flew again photos Larry Kruse wrnay urTnowsKls executioner nas janrasuc rinlan wynn going feature descriptions Windys finishing methods future columns model has ST 60 printing cowl just above trim stripe reads Custom Engine Parts Kinetic Analysis connecting rods made best materials available designed give long service snd eliminate rod breakage modern high-Perfor mance model engines Used leading aircraft boat car racers hobbyists Rods available popular model engines Look RPM new innovative products proven performance records Richardson Precision Machining Inc 5070 Golden Dr. San Jose CA 9512914081257-7059 162 Model Aviation Late items Ted Davey gent has producing DSC retrieval system has new winch market called POWRTOW photo shows its low-slung look Dave claims can launch ther lightest Two-Meter ship can also haul Il-lb cross-country bird air ease winch features solenoid-protected foot switch 1800 ft 15-lb-test line parachute hall bearing line swivel welded frame line drum low profile measures 235 x 12 x 9 weight less battery 40 lb further infor mation write Davey Systems Corp Wood Lane Malvem PA 19355 phone 215 644-0692 Two-Meter World Cup fourth running 2MWC will hosted Modesto Radio Control Club Five identical winches have fashioned event past will man-on-man event Entry forms will mailed out May l983 entries will close May 31 l983 event scheduled June 11-12 1983 further information contact Mr Ed Sb bod 9626 Jellico Ave Northridge CA 91325 phone 2l3 349-4758 Good Lift Doi Pruss 131 E Penninglon Ln Plainfleld IL 60544 Comanche/Perez-Kruse Continued page 67 ing shape both panels complete stage join dihedral spar liber ally epoxied place main landing gear legs bent 5/32-in wire I-bolted spar locations shown Tweak bit necessary make sure wheels track parallel fashion Sport Scale gear shown plans sake simplicity however Jeff chose machine front landing gear fork Precision Scale ship key stock attach setscrew two L-shaped brackets main gear done same fashion After main frame wing put together place nacelle assembly di rectly over leading edge main spar good glue bond can obtained tween pieces particularly leading edge Epoxy nacelles wing checking carefully adjusting necessary assure alignment sembly cures Notice Jeff didnt find necessary use engine thrust offset order keep plane out lines Drill necessary mounting holes temporarily mount engines tanks position Now bellcrank platform can ep oxied place Roberts upright bellcrank bolted-on Route braided cable Gold N Rod its plastic casing through wing rib spar structure and nacelle dual throttle controls 1/16-in music wire pushrod wrapped soldered braided cable attaches throttle arm bellcrank will necessary drill hole just inside original third line location order attach pushrod Since both engines operating same throttle cable carburetor control horns will have placed opposite other Otherwise high setting engine will low setting other Check assembly several times make sure its binding hanging up point particularly conscious possibility muffler interfering carburetor control horn pushrod up position After three lead-outs strung bellcrank sheet lifting surfaces wing 1/16 balsa nacelle areas will need planked some filling-in small balsa blocks will probably neces sary Cowls both engines can laid up fiberglass over carved form using balloon method molding stabilizer rudder both cut /4-in sheet sanded airfoil shape stabilizer presents special case because must mounted fuselage unit along its maple bearing block Re inforce weak spot rear stab shown inset plywood doublers mounting block can drilled out 5/32-in ID brass tube will serve bushing 5/32-in music wire control horn will need solder horn itself music wire slip wire through maple block bushing bend the top view however mounted conventional location wing flaps [6 [I7I7IDealer inquiries also mixed provide aileron action Both PIRANHA GAMMA have foam liii LFIi\j1J Incinvitedwings wood sheeting EconoKote covering High performance modeland workmanship flawless about engine connecting rodsthese birds information comes Get install dont take off Ken Willard RCM SERVO GARD SERVO GARD monitors airborne flight battery peek voltage well radio sigesi received transmitter receiver malfunction detected pan system SERVO GARD reduces throttle automatically ample time before battery failure safely land model SPECIFICATIONS Size Unit installed KPS-14 servo case foreasy installation Just plug throttle servo output Weight Approx 1 oz Sensitivity Accurate within 02 Volts Servo Pulse Unit shipped positive poise systems negative pulse available upon request SERVO GARD comes complete pre-wired pigtails servo connectors choice installed Ispecify connector type order SEE YOUR DEAL ER OR ORDER DIRECT DEALER INOUIRIES IN VI TED Price $3795 Postpaid ISpecify connector type positive negative pulse ordering ENDORSED BY THE SPIRIT OF AMERICA SHOW TEAM LIMA OHIO RF Enterprises 106 N Main St Arlington OH 45814 419 365-5360 arms horn approximate shape shown plans bottom stab should slotted accept control horn wire filled mi croballoons epoxy strength completed stab assembly can set ide until needed fuselage rudder will require little sanding shape however rudder light does enhance planes scale effect con siderably simulated light can filed shape red Lucite plastic fitted aluminum tube ring its base fuselage probably important difficult construction phase aircraft Since keel crutch former assembly would well worth time first construct simple jig aid con struction jig should have base /4-in /2-in plywood approximately long fuselage about 6 wide Scribe lines fuselage formers would located along jig base glue nail vertical pieces / X 6 x 6 plywood base vertical pieces will serve hold formers correct angle insertion keel crutch Its probably best cut vertical slot about /2-in wide center former holder allow clearance keel nose gear should mounted Former before commencing stallation keel crutch Use rubber cement attach formers jig assembly reposition Plank fuselage using alternating strips balsa first side directly opposite order avoid pulling fuse lage off center causing develop torsional twist As wing constantly check alignment As planking pro gresses cut away areas necessary mount both stabilizer wing soon fuselage strong enough permit handling excessive bending possible misalignment Epoxy wing stabilizer place checking position both relative other fuselage Hook up stab pushrod adjust its length achieve neutral stab setting bellcrank neutral After planking complete window areas can cut out temporarily fitted celluloid Temporarily install soft balsa block windshield area carve shape use form molding actual windshield Sigs heavy-gauge clear plastic can used form wind shield Heating large piece plastic PLANES 82/83 IMA Plans Handbooks No 1 Free Flight Planes No 3 Trains Steam Engines No 4 Radio Control Planes No 5 Scale Drawings Planes Radio Modeller Planbook R/C FF Scale Any ONE above PLUS TAUBMAN catalog planes $275 plus $125 3rd class domestic ship ping Can Mex overseas surface mail overseas airmail $400 ONE plans handbook add $200 per EACH plus $ 50 shipping * ** * * * * * * * * * BOATS TAUBMANS 83/84 Boat catalog whopping 140 pages 1000 illustrated plans books galore some interes j-ting stuff PLUS 82/83 IMA Plans Handbook No 2 boats cars $350 plus $150 domestic 3rd class shipping Can Mex overseas surface mail $250 Air mail Eur & So Amer $700 Pac area $900 interested warships liners merchant marine send additional $1 O0forthe Wiswesser catalog sending inquiries please include aSASE TAUBMAN PLANS SERVICE 11 College Drive Box 4G Dept MA Jersey City NJ 07305 May1983 163 formers necessary align keel crutch installation proceeds entire fuselage covered /8 EW FOR 83 balsa planking however wider pieces balsa can used fuselage top bottom area nearly flat may helpful soak planking strips hot water liberally laced ammonia make pliable enough negotiate curves fuselage particularly toward nose area over electric stove gloved hands please until begins smoke will make pliable enough jam down over balsa windshield form make good compound curve may take several tries get acceptable windshield patient Finishing detailing Sand entire airplane carefully Fillets can made Sig Epoxolite oras Jeff didwith poly ester resin microballoons Pits dings dents cracks between planking strips can also filled resin microballoon mixture vinyl spackling compound such DAP Apply thin coat Hobbypoxy Quick Prep Resin let cure Scuff-sand first coat apply second thin coat -J Apply heavy grade silkspan silk second coat still wet pulling out wrinkles surfaces should covered either silk silkspan Jeff used com bination two sake economysilk areas needing extra strength silkspan large flat sur faces Tack down edges may have come unstuck let second coat resin cure Now sanding brush third coat resin using full brush attempt flow resin smoothly can probably wont too smooth wetsand carefully 150 200-grit paper Add fourth coat resin time definite glassy sheen should evident Wet-sand last coat 320-grit paper spray light coat primer Jeff used automotive enamel color coats consequently used automotive primer base coat choose Hob bypoxy K&8 Super Poxy alterna tive use respective primers assure compatibility Wet-sand primer coat 400-grit spray white base coat light applications nec essary create good surface trim color use masking tape mask off trim lines very careful remove underlying resin prone let go paint pull tape off too hard too sharply Rub out final finish good com mercial grade rubbing compound ap ply several coats automotive wax pro tect hard work windows windshield landing gear doors other bits pieces trim can added now keep various antennas breaking off Jeff molded silicone rubber attached fuselage See CL Scale column October 1978 Model Aviation details Side curtains windows made folded paper towels Logos hand-painted press type letters art supply store spelled out No Step warnings Flying plane has built per plans instructions will very light easy manage air However single-engine performance marginal best certain both engines synchro nized nearly possible ear prepare first flight Twin-engine airplanes little like bi planes carry definite magical properties air sound twinis singing unison around circle will automatically gather crowd time fly Good luck version Twin Comanche Reference Sources Francis Devon Mr Piper Cubs Iowa State University Press Ames IA 1976 pp 178 179 188 194 195 202 Janes Worlds Aircraft 1972-73 John R Taylor ed McGraw-Hill Book Company New York NY p 406 Janes Worlds Aircraft 1973-74 John R Taylor ed McGraw-Hill Book Company New York NY pp 409-410 Janes Encyclopedia Aviation Vol 5 M J H Taylor ed Grolier Company Danbury CT 1980 pp 896 898 CL Aerobatics/Paul Continued oaoe 68 sembly substituting Allen-head screws head backplate modifying engine take Fox Stunt Special muffler strap con nection will distort crankcase Price Stage includes new engine $30 plus $250 shipping Stage II includes Stage plus fullybalanced crankshaft lower vibration smoother operation Price Stage II cludes new Fox 35 engine $35 plus $250 164 Model Aviation TO ORDER PLEASE PRINT NAME ADDRESS Send Check Money Order Ipavable Consumers Guide CONSUMERSGUIDE P0n0X376 GREATFALLSVA 22066 Check Money Order $660 1495 postage/handlingl Overseas Orders $495 ISurface Mail OR $554 lAir Mail Dealer Inquiries Welcome Write Details Special Bulk Discounts AMA Clubs e Details
Edition: Model Aviation - 1983/05
Page Numbers: 64, 65, 66, 68, 162, 163, 164
Do have two 25 engines youd like put good CL Sport Scale model add details CL Scale get ready pick up some contest hardware THE PIPER TWIN COMANCHE came being late 1962 replacement Piper Apache first version Comanche designated PA-30 tested 1965 Comanche available six-seater could equipped tip tanks turbo-charged option Becoming sophisticated Comanche re-introduced 1971 Twin Comanche PA-39 C/R designa use Put Precision tion suffix new counter-rotating props counteracted aircrafts ten dency swing takeoff due engine torque Counter-rotation propellers achieved reversing direction starboard engine shaft Lycoming engineers reversed several components changed firing order cylinders thereby producing mirror image port engine Production Twin Comanche brought halt 1972 flood Pipers Lock Haven plant However during its hey day Twin Comanche held several speed distance records under able piloting Max Conrad also made state-of-the-art design contributions first civilian air craft swept fin all-flying sta bilizer stabilator Jeff Perez member 1982 US Control Line Scale World Championships Team chose Twin Comanche Scale modeling subject its aesthetic appeal because would earn him points judging single-engined craft just happened also Twin Comanche based Lamed KS Jeffs home town owned Reed Peters friend Jeffs Sometimes its convenience rather necessity thats mother invention Jeffs Sport Scale Twin Comanche pre 64 Model Aviation 0 C 0 U 0 U 1 0 0 0 designer Jeff Perez holds up plane us second Scale plane has built real success functioning stepping-stone Jeffs becoming US team member IyJv Design Jeff Perez Text Larry Kruse sented plans came being about four months after initial decision build Precision Scale Twin Comanche took another three months complete Both flew first time 1978 Nats Precision Scale ship 4th Sport Scale plane 2nd Jeff two planes represented real milestone modeling two respec tively second third Scale ships ever built score well early modeling career almost unheard three flight shots across top Mike Gretz Comanche very realistic quite stable flight altitudes of And carry Jeffs story step yond current subject 1982 US Scale Team entry B-17 placed 8th World Championships highest place US team member takes moment fully sink Jeff has accom plished after having built four Scale airplanes entire life return subject hand obvi ous Twin Comanche good ship anyone wanting enter world CL Scale flying features easy construction eye appeal judges automatic bonus points twin-engined aircraft Construction will hastened considerably pre-kitting much plane possible Cut out ribs formers spars plywood pieces prior beginning Glue Part Part B sequence wing should built first Attach nacelles easier alignment wing fuselage glued together Build wing panel time dihedral spar sheeting will glued later Pin down main wing spars over plan slip wing ribs position Use small cardboard triangle nl May 1983 65 Except needle valves sticking up its hard tell model its r-IIII swieme simple easy io execute ano very attractive Jetis planefull-size counterpart Engines well-hidden cowlings view done white green trim black letteringbut still have ample cooling ribs 900 spar tackglue place right now just drop thicker cyanoacrylate CyA glues such Super Jet Super Zap-A-Gap Slip trailing edge spar notches back rib glue place Note spar laps over itself Rib Station 6 leading edge piece next Constantly check alignment during early construction phases need pop rib off wing spars order align perfectly means Twisted wings fly funnyor sat isfied rib adjustment glue ribs permanently CyA tapered trailing edge pieces can added next finally tip blocks Use tip rib template gouge out opening wing tank block before carv Continued page 162 66 Model Aviation Cabin area detail shows windshield can molded heavygauge celluloid Side curtains made paper towels Cabin interior complete Precision Scale version Theres no need such extensive detailing Sport Scale model Jet molded antennas white silicone rubber Rigid ones need constant repairing due frequent damage suffer uowllng made fiberglass Cutouts engine cooling operation made outside flight circle nacelle full-flying stabilizer unique Scale ship control horns pushrods internal dont spoil scale lines plane stock manufactured spinner looks realistic model prop wooden 9-5 Y&O painted simulate aluminum Rudder warning light simple detail adds much overall good effect Control Line AEROBA TICS Wynn Paul GOOD NEWS Old Time Stunt fliers 1983 Nationals will probably have fantastic tumout OTS especially since Massachu setts location will attract Stunt fliers New York-New Jersey-New England area OTS very popular Event Directorof CL Precision Aerobatics Lanny Shorts trying lure John Miske Event Director Old-Time event will probably held Tuesday Nationals week Speaking Event Directors such about stepping up volunteering help Nationals Contact Lanny 661 Louie Ave Lodi CA 95240 Tel 209 368-9492 needs Stunt judges recorders pit workers pull-testers go-fers sign makers setup cleanup persons circle marshals general helpers moving Junior Senior flying Friday have elimi nated day judging however will need judges Friday handle both Open semi finals younger set Lanny hopes some Open fliers qualify Friday may want help Junior-Senior flying day speaking older things Fox 35 Stunt engine has continuous pro duction 34 years still very popular engine can very good beginning engine Stunt Jim McClellan Burlingame CA Sig Chipmunk Its finished MonoKote Pactra Formula U paint uses OS Max 35 proper plane/engine combination can go way victors stand old General Atlanta Stunt Conspiracy Tom Dixon out car racing business back model airplane world Tom has long-time advocate 35-size airplanes has spent lot time reworking Fox 35s Scott Bair research engineer Georgia Tech have experimented altering crank shaft Fox using different heads compression ratios Regarding crankshaft Tom advises balanc ing part lower vibration smoother op eration Tom also substitutes various heads older Fox 36s 36X engines dome recut give power Fox 35 Stunt has put together four packages rework modi fications engine can meet com petition needs pocketbook almost modeler Stage package includes new Fox 35 engine has disassembled put back together careful fitting parts lapping piston sleeve new needle valve asContinued page 164 68 Model Aviation Matthew Bauer dad start repairing Matts modified Top Flite Tutor after wind caught 1982 Nats flew again photos Larry Kruse wrnay urTnowsKls executioner nas janrasuc rinlan wynn going feature descriptions Windys finishing methods future columns model has ST 60 printing cowl just above trim stripe reads Custom Engine Parts Kinetic Analysis connecting rods made best materials available designed give long service snd eliminate rod breakage modern high-Perfor mance model engines Used leading aircraft boat car racers hobbyists Rods available popular model engines Look RPM new innovative products proven performance records Richardson Precision Machining Inc 5070 Golden Dr. San Jose CA 9512914081257-7059 162 Model Aviation Late items Ted Davey gent has producing DSC retrieval system has new winch market called POWRTOW photo shows its low-slung look Dave claims can launch ther lightest Two-Meter ship can also haul Il-lb cross-country bird air ease winch features solenoid-protected foot switch 1800 ft 15-lb-test line parachute hall bearing line swivel welded frame line drum low profile measures 235 x 12 x 9 weight less battery 40 lb further infor mation write Davey Systems Corp Wood Lane Malvem PA 19355 phone 215 644-0692 Two-Meter World Cup fourth running 2MWC will hosted Modesto Radio Control Club Five identical winches have fashioned event past will man-on-man event Entry forms will mailed out May l983 entries will close May 31 l983 event scheduled June 11-12 1983 further information contact Mr Ed Sb bod 9626 Jellico Ave Northridge CA 91325 phone 2l3 349-4758 Good Lift Doi Pruss 131 E Penninglon Ln Plainfleld IL 60544 Comanche/Perez-Kruse Continued page 67 ing shape both panels complete stage join dihedral spar liber ally epoxied place main landing gear legs bent 5/32-in wire I-bolted spar locations shown Tweak bit necessary make sure wheels track parallel fashion Sport Scale gear shown plans sake simplicity however Jeff chose machine front landing gear fork Precision Scale ship key stock attach setscrew two L-shaped brackets main gear done same fashion After main frame wing put together place nacelle assembly di rectly over leading edge main spar good glue bond can obtained tween pieces particularly leading edge Epoxy nacelles wing checking carefully adjusting necessary assure alignment sembly cures Notice Jeff didnt find necessary use engine thrust offset order keep plane out lines Drill necessary mounting holes temporarily mount engines tanks position Now bellcrank platform can ep oxied place Roberts upright bellcrank bolted-on Route braided cable Gold N Rod its plastic casing through wing rib spar structure and nacelle dual throttle controls 1/16-in music wire pushrod wrapped soldered braided cable attaches throttle arm bellcrank will necessary drill hole just inside original third line location order attach pushrod Since both engines operating same throttle cable carburetor control horns will have placed opposite other Otherwise high setting engine will low setting other Check assembly several times make sure its binding hanging up point particularly conscious possibility muffler interfering carburetor control horn pushrod up position After three lead-outs strung bellcrank sheet lifting surfaces wing 1/16 balsa nacelle areas will need planked some filling-in small balsa blocks will probably neces sary Cowls both engines can laid up fiberglass over carved form using balloon method molding stabilizer rudder both cut /4-in sheet sanded airfoil shape stabilizer presents special case because must mounted fuselage unit along its maple bearing block Re inforce weak spot rear stab shown inset plywood doublers mounting block can drilled out 5/32-in ID brass tube will serve bushing 5/32-in music wire control horn will need solder horn itself music wire slip wire through maple block bushing bend the top view however mounted conventional location wing flaps [6 [I7I7IDealer inquiries also mixed provide aileron action Both PIRANHA GAMMA have foam liii LFIi\j1J Incinvitedwings wood sheeting EconoKote covering High performance modeland workmanship flawless about engine connecting rodsthese birds information comes Get install dont take off Ken Willard RCM SERVO GARD SERVO GARD monitors airborne flight battery peek voltage well radio sigesi received transmitter receiver malfunction detected pan system SERVO GARD reduces throttle automatically ample time before battery failure safely land model SPECIFICATIONS Size Unit installed KPS-14 servo case foreasy installation Just plug throttle servo output Weight Approx 1 oz Sensitivity Accurate within 02 Volts Servo Pulse Unit shipped positive poise systems negative pulse available upon request SERVO GARD comes complete pre-wired pigtails servo connectors choice installed Ispecify connector type order SEE YOUR DEAL ER OR ORDER DIRECT DEALER INOUIRIES IN VI TED Price $3795 Postpaid ISpecify connector type positive negative pulse ordering ENDORSED BY THE SPIRIT OF AMERICA SHOW TEAM LIMA OHIO RF Enterprises 106 N Main St Arlington OH 45814 419 365-5360 arms horn approximate shape shown plans bottom stab should slotted accept control horn wire filled mi croballoons epoxy strength completed stab assembly can set ide until needed fuselage rudder will require little sanding shape however rudder light does enhance planes scale effect con siderably simulated light can filed shape red Lucite plastic fitted aluminum tube ring its base fuselage probably important difficult construction phase aircraft Since keel crutch former assembly would well worth time first construct simple jig aid con struction jig should have base /4-in /2-in plywood approximately long fuselage about 6 wide Scribe lines fuselage formers would located along jig base glue nail vertical pieces / X 6 x 6 plywood base vertical pieces will serve hold formers correct angle insertion keel crutch Its probably best cut vertical slot about /2-in wide center former holder allow clearance keel nose gear should mounted Former before commencing stallation keel crutch Use rubber cement attach formers jig assembly reposition Plank fuselage using alternating strips balsa first side directly opposite order avoid pulling fuse lage off center causing develop torsional twist As wing constantly check alignment As planking pro gresses cut away areas necessary mount both stabilizer wing soon fuselage strong enough permit handling excessive bending possible misalignment Epoxy wing stabilizer place checking position both relative other fuselage Hook up stab pushrod adjust its length achieve neutral stab setting bellcrank neutral After planking complete window areas can cut out temporarily fitted celluloid Temporarily install soft balsa block windshield area carve shape use form molding actual windshield Sigs heavy-gauge clear plastic can used form wind shield Heating large piece plastic PLANES 82/83 IMA Plans Handbooks No 1 Free Flight Planes No 3 Trains Steam Engines No 4 Radio Control Planes No 5 Scale Drawings Planes Radio Modeller Planbook R/C FF Scale Any ONE above PLUS TAUBMAN catalog planes $275 plus $125 3rd class domestic ship ping Can Mex overseas surface mail overseas airmail $400 ONE plans handbook add $200 per EACH plus $ 50 shipping * ** * * * * * * * * * BOATS TAUBMANS 83/84 Boat catalog whopping 140 pages 1000 illustrated plans books galore some interes j-ting stuff PLUS 82/83 IMA Plans Handbook No 2 boats cars $350 plus $150 domestic 3rd class shipping Can Mex overseas surface mail $250 Air mail Eur & So Amer $700 Pac area $900 interested warships liners merchant marine send additional $1 O0forthe Wiswesser catalog sending inquiries please include aSASE TAUBMAN PLANS SERVICE 11 College Drive Box 4G Dept MA Jersey City NJ 07305 May1983 163 formers necessary align keel crutch installation proceeds entire fuselage covered /8 EW FOR 83 balsa planking however wider pieces balsa can used fuselage top bottom area nearly flat may helpful soak planking strips hot water liberally laced ammonia make pliable enough negotiate curves fuselage particularly toward nose area over electric stove gloved hands please until begins smoke will make pliable enough jam down over balsa windshield form make good compound curve may take several tries get acceptable windshield patient Finishing detailing Sand entire airplane carefully Fillets can made Sig Epoxolite oras Jeff didwith poly ester resin microballoons Pits dings dents cracks between planking strips can also filled resin microballoon mixture vinyl spackling compound such DAP Apply thin coat Hobbypoxy Quick Prep Resin let cure Scuff-sand first coat apply second thin coat -J Apply heavy grade silkspan silk second coat still wet pulling out wrinkles surfaces should covered either silk silkspan Jeff used com bination two sake economysilk areas needing extra strength silkspan large flat sur faces Tack down edges may have come unstuck let second coat resin cure Now sanding brush third coat resin using full brush attempt flow resin smoothly can probably wont too smooth wetsand carefully 150 200-grit paper Add fourth coat resin time definite glassy sheen should evident Wet-sand last coat 320-grit paper spray light coat primer Jeff used automotive enamel color coats consequently used automotive primer base coat choose Hob bypoxy K&8 Super Poxy alterna tive use respective primers assure compatibility Wet-sand primer coat 400-grit spray white base coat light applications nec essary create good surface trim color use masking tape mask off trim lines very careful remove underlying resin prone let go paint pull tape off too hard too sharply Rub out final finish good com mercial grade rubbing compound ap ply several coats automotive wax pro tect hard work windows windshield landing gear doors other bits pieces trim can added now keep various antennas breaking off Jeff molded silicone rubber attached fuselage See CL Scale column October 1978 Model Aviation details Side curtains windows made folded paper towels Logos hand-painted press type letters art supply store spelled out No Step warnings Flying plane has built per plans instructions will very light easy manage air However single-engine performance marginal best certain both engines synchro nized nearly possible ear prepare first flight Twin-engine airplanes little like bi planes carry definite magical properties air sound twinis singing unison around circle will automatically gather crowd time fly Good luck version Twin Comanche Reference Sources Francis Devon Mr Piper Cubs Iowa State University Press Ames IA 1976 pp 178 179 188 194 195 202 Janes Worlds Aircraft 1972-73 John R Taylor ed McGraw-Hill Book Company New York NY p 406 Janes Worlds Aircraft 1973-74 John R Taylor ed McGraw-Hill Book Company New York NY pp 409-410 Janes Encyclopedia Aviation Vol 5 M J H Taylor ed Grolier Company Danbury CT 1980 pp 896 898 CL Aerobatics/Paul Continued oaoe 68 sembly substituting Allen-head screws head backplate modifying engine take Fox Stunt Special muffler strap con nection will distort crankcase Price Stage includes new engine $30 plus $250 shipping Stage II includes Stage plus fullybalanced crankshaft lower vibration smoother operation Price Stage II cludes new Fox 35 engine $35 plus $250 164 Model Aviation TO ORDER PLEASE PRINT NAME ADDRESS Send Check Money Order Ipavable Consumers Guide CONSUMERSGUIDE P0n0X376 GREATFALLSVA 22066 Check Money Order $660 1495 postage/handlingl Overseas Orders $495 ISurface Mail OR $554 lAir Mail Dealer Inquiries Welcome Write Details Special Bulk Discounts AMA Clubs e Details
Edition: Model Aviation - 1983/05
Page Numbers: 64, 65, 66, 68, 162, 163, 164
Do have two 25 engines youd like put good CL Sport Scale model add details CL Scale get ready pick up some contest hardware THE PIPER TWIN COMANCHE came being late 1962 replacement Piper Apache first version Comanche designated PA-30 tested 1965 Comanche available six-seater could equipped tip tanks turbo-charged option Becoming sophisticated Comanche re-introduced 1971 Twin Comanche PA-39 C/R designa use Put Precision tion suffix new counter-rotating props counteracted aircrafts ten dency swing takeoff due engine torque Counter-rotation propellers achieved reversing direction starboard engine shaft Lycoming engineers reversed several components changed firing order cylinders thereby producing mirror image port engine Production Twin Comanche brought halt 1972 flood Pipers Lock Haven plant However during its hey day Twin Comanche held several speed distance records under able piloting Max Conrad also made state-of-the-art design contributions first civilian air craft swept fin all-flying sta bilizer stabilator Jeff Perez member 1982 US Control Line Scale World Championships Team chose Twin Comanche Scale modeling subject its aesthetic appeal because would earn him points judging single-engined craft just happened also Twin Comanche based Lamed KS Jeffs home town owned Reed Peters friend Jeffs Sometimes its convenience rather necessity thats mother invention Jeffs Sport Scale Twin Comanche pre 64 Model Aviation 0 C 0 U 0 U 1 0 0 0 designer Jeff Perez holds up plane us second Scale plane has built real success functioning stepping-stone Jeffs becoming US team member IyJv Design Jeff Perez Text Larry Kruse sented plans came being about four months after initial decision build Precision Scale Twin Comanche took another three months complete Both flew first time 1978 Nats Precision Scale ship 4th Sport Scale plane 2nd Jeff two planes represented real milestone modeling two respec tively second third Scale ships ever built score well early modeling career almost unheard three flight shots across top Mike Gretz Comanche very realistic quite stable flight altitudes of And carry Jeffs story step yond current subject 1982 US Scale Team entry B-17 placed 8th World Championships highest place US team member takes moment fully sink Jeff has accom plished after having built four Scale airplanes entire life return subject hand obvi ous Twin Comanche good ship anyone wanting enter world CL Scale flying features easy construction eye appeal judges automatic bonus points twin-engined aircraft Construction will hastened considerably pre-kitting much plane possible Cut out ribs formers spars plywood pieces prior beginning Glue Part Part B sequence wing should built first Attach nacelles easier alignment wing fuselage glued together Build wing panel time dihedral spar sheeting will glued later Pin down main wing spars over plan slip wing ribs position Use small cardboard triangle nl May 1983 65 Except needle valves sticking up its hard tell model its r-IIII swieme simple easy io execute ano very attractive Jetis planefull-size counterpart Engines well-hidden cowlings view done white green trim black letteringbut still have ample cooling ribs 900 spar tackglue place right now just drop thicker cyanoacrylate CyA glues such Super Jet Super Zap-A-Gap Slip trailing edge spar notches back rib glue place Note spar laps over itself Rib Station 6 leading edge piece next Constantly check alignment during early construction phases need pop rib off wing spars order align perfectly means Twisted wings fly funnyor sat isfied rib adjustment glue ribs permanently CyA tapered trailing edge pieces can added next finally tip blocks Use tip rib template gouge out opening wing tank block before carv Continued page 162 66 Model Aviation Cabin area detail shows windshield can molded heavygauge celluloid Side curtains made paper towels Cabin interior complete Precision Scale version Theres no need such extensive detailing Sport Scale model Jet molded antennas white silicone rubber Rigid ones need constant repairing due frequent damage suffer uowllng made fiberglass Cutouts engine cooling operation made outside flight circle nacelle full-flying stabilizer unique Scale ship control horns pushrods internal dont spoil scale lines plane stock manufactured spinner looks realistic model prop wooden 9-5 Y&O painted simulate aluminum Rudder warning light simple detail adds much overall good effect Control Line AEROBA TICS Wynn Paul GOOD NEWS Old Time Stunt fliers 1983 Nationals will probably have fantastic tumout OTS especially since Massachu setts location will attract Stunt fliers New York-New Jersey-New England area OTS very popular Event Directorof CL Precision Aerobatics Lanny Shorts trying lure John Miske Event Director Old-Time event will probably held Tuesday Nationals week Speaking Event Directors such about stepping up volunteering help Nationals Contact Lanny 661 Louie Ave Lodi CA 95240 Tel 209 368-9492 needs Stunt judges recorders pit workers pull-testers go-fers sign makers setup cleanup persons circle marshals general helpers moving Junior Senior flying Friday have elimi nated day judging however will need judges Friday handle both Open semi finals younger set Lanny hopes some Open fliers qualify Friday may want help Junior-Senior flying day speaking older things Fox 35 Stunt engine has continuous pro duction 34 years still very popular engine can very good beginning engine Stunt Jim McClellan Burlingame CA Sig Chipmunk Its finished MonoKote Pactra Formula U paint uses OS Max 35 proper plane/engine combination can go way victors stand old General Atlanta Stunt Conspiracy Tom Dixon out car racing business back model airplane world Tom has long-time advocate 35-size airplanes has spent lot time reworking Fox 35s Scott Bair research engineer Georgia Tech have experimented altering crank shaft Fox using different heads compression ratios Regarding crankshaft Tom advises balanc ing part lower vibration smoother op eration Tom also substitutes various heads older Fox 36s 36X engines dome recut give power Fox 35 Stunt has put together four packages rework modi fications engine can meet com petition needs pocketbook almost modeler Stage package includes new Fox 35 engine has disassembled put back together careful fitting parts lapping piston sleeve new needle valve asContinued page 164 68 Model Aviation Matthew Bauer dad start repairing Matts modified Top Flite Tutor after wind caught 1982 Nats flew again photos Larry Kruse wrnay urTnowsKls executioner nas janrasuc rinlan wynn going feature descriptions Windys finishing methods future columns model has ST 60 printing cowl just above trim stripe reads Custom Engine Parts Kinetic Analysis connecting rods made best materials available designed give long service snd eliminate rod breakage modern high-Perfor mance model engines Used leading aircraft boat car racers hobbyists Rods available popular model engines Look RPM new innovative products proven performance records Richardson Precision Machining Inc 5070 Golden Dr. San Jose CA 9512914081257-7059 162 Model Aviation Late items Ted Davey gent has producing DSC retrieval system has new winch market called POWRTOW photo shows its low-slung look Dave claims can launch ther lightest Two-Meter ship can also haul Il-lb cross-country bird air ease winch features solenoid-protected foot switch 1800 ft 15-lb-test line parachute hall bearing line swivel welded frame line drum low profile measures 235 x 12 x 9 weight less battery 40 lb further infor mation write Davey Systems Corp Wood Lane Malvem PA 19355 phone 215 644-0692 Two-Meter World Cup fourth running 2MWC will hosted Modesto Radio Control Club Five identical winches have fashioned event past will man-on-man event Entry forms will mailed out May l983 entries will close May 31 l983 event scheduled June 11-12 1983 further information contact Mr Ed Sb bod 9626 Jellico Ave Northridge CA 91325 phone 2l3 349-4758 Good Lift Doi Pruss 131 E Penninglon Ln Plainfleld IL 60544 Comanche/Perez-Kruse Continued page 67 ing shape both panels complete stage join dihedral spar liber ally epoxied place main landing gear legs bent 5/32-in wire I-bolted spar locations shown Tweak bit necessary make sure wheels track parallel fashion Sport Scale gear shown plans sake simplicity however Jeff chose machine front landing gear fork Precision Scale ship key stock attach setscrew two L-shaped brackets main gear done same fashion After main frame wing put together place nacelle assembly di rectly over leading edge main spar good glue bond can obtained tween pieces particularly leading edge Epoxy nacelles wing checking carefully adjusting necessary assure alignment sembly cures Notice Jeff didnt find necessary use engine thrust offset order keep plane out lines Drill necessary mounting holes temporarily mount engines tanks position Now bellcrank platform can ep oxied place Roberts upright bellcrank bolted-on Route braided cable Gold N Rod its plastic casing through wing rib spar structure and nacelle dual throttle controls 1/16-in music wire pushrod wrapped soldered braided cable attaches throttle arm bellcrank will necessary drill hole just inside original third line location order attach pushrod Since both engines operating same throttle cable carburetor control horns will have placed opposite other Otherwise high setting engine will low setting other Check assembly several times make sure its binding hanging up point particularly conscious possibility muffler interfering carburetor control horn pushrod up position After three lead-outs strung bellcrank sheet lifting surfaces wing 1/16 balsa nacelle areas will need planked some filling-in small balsa blocks will probably neces sary Cowls both engines can laid up fiberglass over carved form using balloon method molding stabilizer rudder both cut /4-in sheet sanded airfoil shape stabilizer presents special case because must mounted fuselage unit along its maple bearing block Re inforce weak spot rear stab shown inset plywood doublers mounting block can drilled out 5/32-in ID brass tube will serve bushing 5/32-in music wire control horn will need solder horn itself music wire slip wire through maple block bushing bend the top view however mounted conventional location wing flaps [6 [I7I7IDealer inquiries also mixed provide aileron action Both PIRANHA GAMMA have foam liii LFIi\j1J Incinvitedwings wood sheeting EconoKote covering High performance modeland workmanship flawless about engine connecting rodsthese birds information comes Get install dont take off Ken Willard RCM SERVO GARD SERVO GARD monitors airborne flight battery peek voltage well radio sigesi received transmitter receiver malfunction detected pan system SERVO GARD reduces throttle automatically ample time before battery failure safely land model SPECIFICATIONS Size Unit installed KPS-14 servo case foreasy installation Just plug throttle servo output Weight Approx 1 oz Sensitivity Accurate within 02 Volts Servo Pulse Unit shipped positive poise systems negative pulse available upon request SERVO GARD comes complete pre-wired pigtails servo connectors choice installed Ispecify connector type order SEE YOUR DEAL ER OR ORDER DIRECT DEALER INOUIRIES IN VI TED Price $3795 Postpaid ISpecify connector type positive negative pulse ordering ENDORSED BY THE SPIRIT OF AMERICA SHOW TEAM LIMA OHIO RF Enterprises 106 N Main St Arlington OH 45814 419 365-5360 arms horn approximate shape shown plans bottom stab should slotted accept control horn wire filled mi croballoons epoxy strength completed stab assembly can set ide until needed fuselage rudder will require little sanding shape however rudder light does enhance planes scale effect con siderably simulated light can filed shape red Lucite plastic fitted aluminum tube ring its base fuselage probably important difficult construction phase aircraft Since keel crutch former assembly would well worth time first construct simple jig aid con struction jig should have base /4-in /2-in plywood approximately long fuselage about 6 wide Scribe lines fuselage formers would located along jig base glue nail vertical pieces / X 6 x 6 plywood base vertical pieces will serve hold formers correct angle insertion keel crutch Its probably best cut vertical slot about /2-in wide center former holder allow clearance keel nose gear should mounted Former before commencing stallation keel crutch Use rubber cement attach formers jig assembly reposition Plank fuselage using alternating strips balsa first side directly opposite order avoid pulling fuse lage off center causing develop torsional twist As wing constantly check alignment As planking pro gresses cut away areas necessary mount both stabilizer wing soon fuselage strong enough permit handling excessive bending possible misalignment Epoxy wing stabilizer place checking position both relative other fuselage Hook up stab pushrod adjust its length achieve neutral stab setting bellcrank neutral After planking complete window areas can cut out temporarily fitted celluloid Temporarily install soft balsa block windshield area carve shape use form molding actual windshield Sigs heavy-gauge clear plastic can used form wind shield Heating large piece plastic PLANES 82/83 IMA Plans Handbooks No 1 Free Flight Planes No 3 Trains Steam Engines No 4 Radio Control Planes No 5 Scale Drawings Planes Radio Modeller Planbook R/C FF Scale Any ONE above PLUS TAUBMAN catalog planes $275 plus $125 3rd class domestic ship ping Can Mex overseas surface mail overseas airmail $400 ONE plans handbook add $200 per EACH plus $ 50 shipping * ** * * * * * * * * * BOATS TAUBMANS 83/84 Boat catalog whopping 140 pages 1000 illustrated plans books galore some interes j-ting stuff PLUS 82/83 IMA Plans Handbook No 2 boats cars $350 plus $150 domestic 3rd class shipping Can Mex overseas surface mail $250 Air mail Eur & So Amer $700 Pac area $900 interested warships liners merchant marine send additional $1 O0forthe Wiswesser catalog sending inquiries please include aSASE TAUBMAN PLANS SERVICE 11 College Drive Box 4G Dept MA Jersey City NJ 07305 May1983 163 formers necessary align keel crutch installation proceeds entire fuselage covered /8 EW FOR 83 balsa planking however wider pieces balsa can used fuselage top bottom area nearly flat may helpful soak planking strips hot water liberally laced ammonia make pliable enough negotiate curves fuselage particularly toward nose area over electric stove gloved hands please until begins smoke will make pliable enough jam down over balsa windshield form make good compound curve may take several tries get acceptable windshield patient Finishing detailing Sand entire airplane carefully Fillets can made Sig Epoxolite oras Jeff didwith poly ester resin microballoons Pits dings dents cracks between planking strips can also filled resin microballoon mixture vinyl spackling compound such DAP Apply thin coat Hobbypoxy Quick Prep Resin let cure Scuff-sand first coat apply second thin coat -J Apply heavy grade silkspan silk second coat still wet pulling out wrinkles surfaces should covered either silk silkspan Jeff used com bination two sake economysilk areas needing extra strength silkspan large flat sur faces Tack down edges may have come unstuck let second coat resin cure Now sanding brush third coat resin using full brush attempt flow resin smoothly can probably wont too smooth wetsand carefully 150 200-grit paper Add fourth coat resin time definite glassy sheen should evident Wet-sand last coat 320-grit paper spray light coat primer Jeff used automotive enamel color coats consequently used automotive primer base coat choose Hob bypoxy K&8 Super Poxy alterna tive use respective primers assure compatibility Wet-sand primer coat 400-grit spray white base coat light applications nec essary create good surface trim color use masking tape mask off trim lines very careful remove underlying resin prone let go paint pull tape off too hard too sharply Rub out final finish good com mercial grade rubbing compound ap ply several coats automotive wax pro tect hard work windows windshield landing gear doors other bits pieces trim can added now keep various antennas breaking off Jeff molded silicone rubber attached fuselage See CL Scale column October 1978 Model Aviation details Side curtains windows made folded paper towels Logos hand-painted press type letters art supply store spelled out No Step warnings Flying plane has built per plans instructions will very light easy manage air However single-engine performance marginal best certain both engines synchro nized nearly possible ear prepare first flight Twin-engine airplanes little like bi planes carry definite magical properties air sound twinis singing unison around circle will automatically gather crowd time fly Good luck version Twin Comanche Reference Sources Francis Devon Mr Piper Cubs Iowa State University Press Ames IA 1976 pp 178 179 188 194 195 202 Janes Worlds Aircraft 1972-73 John R Taylor ed McGraw-Hill Book Company New York NY p 406 Janes Worlds Aircraft 1973-74 John R Taylor ed McGraw-Hill Book Company New York NY pp 409-410 Janes Encyclopedia Aviation Vol 5 M J H Taylor ed Grolier Company Danbury CT 1980 pp 896 898 CL Aerobatics/Paul Continued oaoe 68 sembly substituting Allen-head screws head backplate modifying engine take Fox Stunt Special muffler strap con nection will distort crankcase Price Stage includes new engine $30 plus $250 shipping Stage II includes Stage plus fullybalanced crankshaft lower vibration smoother operation Price Stage II cludes new Fox 35 engine $35 plus $250 164 Model Aviation TO ORDER PLEASE PRINT NAME ADDRESS Send Check Money Order Ipavable Consumers Guide CONSUMERSGUIDE P0n0X376 GREATFALLSVA 22066 Check Money Order $660 1495 postage/handlingl Overseas Orders $495 ISurface Mail OR $554 lAir Mail Dealer Inquiries Welcome Write Details Special Bulk Discounts AMA Clubs e Details
Edition: Model Aviation - 1983/05
Page Numbers: 64, 65, 66, 68, 162, 163, 164
Do have two 25 engines youd like put good CL Sport Scale model add details CL Scale get ready pick up some contest hardware THE PIPER TWIN COMANCHE came being late 1962 replacement Piper Apache first version Comanche designated PA-30 tested 1965 Comanche available six-seater could equipped tip tanks turbo-charged option Becoming sophisticated Comanche re-introduced 1971 Twin Comanche PA-39 C/R designa use Put Precision tion suffix new counter-rotating props counteracted aircrafts ten dency swing takeoff due engine torque Counter-rotation propellers achieved reversing direction starboard engine shaft Lycoming engineers reversed several components changed firing order cylinders thereby producing mirror image port engine Production Twin Comanche brought halt 1972 flood Pipers Lock Haven plant However during its hey day Twin Comanche held several speed distance records under able piloting Max Conrad also made state-of-the-art design contributions first civilian air craft swept fin all-flying sta bilizer stabilator Jeff Perez member 1982 US Control Line Scale World Championships Team chose Twin Comanche Scale modeling subject its aesthetic appeal because would earn him points judging single-engined craft just happened also Twin Comanche based Lamed KS Jeffs home town owned Reed Peters friend Jeffs Sometimes its convenience rather necessity thats mother invention Jeffs Sport Scale Twin Comanche pre 64 Model Aviation 0 C 0 U 0 U 1 0 0 0 designer Jeff Perez holds up plane us second Scale plane has built real success functioning stepping-stone Jeffs becoming US team member IyJv Design Jeff Perez Text Larry Kruse sented plans came being about four months after initial decision build Precision Scale Twin Comanche took another three months complete Both flew first time 1978 Nats Precision Scale ship 4th Sport Scale plane 2nd Jeff two planes represented real milestone modeling two respec tively second third Scale ships ever built score well early modeling career almost unheard three flight shots across top Mike Gretz Comanche very realistic quite stable flight altitudes of And carry Jeffs story step yond current subject 1982 US Scale Team entry B-17 placed 8th World Championships highest place US team member takes moment fully sink Jeff has accom plished after having built four Scale airplanes entire life return subject hand obvi ous Twin Comanche good ship anyone wanting enter world CL Scale flying features easy construction eye appeal judges automatic bonus points twin-engined aircraft Construction will hastened considerably pre-kitting much plane possible Cut out ribs formers spars plywood pieces prior beginning Glue Part Part B sequence wing should built first Attach nacelles easier alignment wing fuselage glued together Build wing panel time dihedral spar sheeting will glued later Pin down main wing spars over plan slip wing ribs position Use small cardboard triangle nl May 1983 65 Except needle valves sticking up its hard tell model its r-IIII swieme simple easy io execute ano very attractive Jetis planefull-size counterpart Engines well-hidden cowlings view done white green trim black letteringbut still have ample cooling ribs 900 spar tackglue place right now just drop thicker cyanoacrylate CyA glues such Super Jet Super Zap-A-Gap Slip trailing edge spar notches back rib glue place Note spar laps over itself Rib Station 6 leading edge piece next Constantly check alignment during early construction phases need pop rib off wing spars order align perfectly means Twisted wings fly funnyor sat isfied rib adjustment glue ribs permanently CyA tapered trailing edge pieces can added next finally tip blocks Use tip rib template gouge out opening wing tank block before carv Continued page 162 66 Model Aviation Cabin area detail shows windshield can molded heavygauge celluloid Side curtains made paper towels Cabin interior complete Precision Scale version Theres no need such extensive detailing Sport Scale model Jet molded antennas white silicone rubber Rigid ones need constant repairing due frequent damage suffer uowllng made fiberglass Cutouts engine cooling operation made outside flight circle nacelle full-flying stabilizer unique Scale ship control horns pushrods internal dont spoil scale lines plane stock manufactured spinner looks realistic model prop wooden 9-5 Y&O painted simulate aluminum Rudder warning light simple detail adds much overall good effect Control Line AEROBA TICS Wynn Paul GOOD NEWS Old Time Stunt fliers 1983 Nationals will probably have fantastic tumout OTS especially since Massachu setts location will attract Stunt fliers New York-New Jersey-New England area OTS very popular Event Directorof CL Precision Aerobatics Lanny Shorts trying lure John Miske Event Director Old-Time event will probably held Tuesday Nationals week Speaking Event Directors such about stepping up volunteering help Nationals Contact Lanny 661 Louie Ave Lodi CA 95240 Tel 209 368-9492 needs Stunt judges recorders pit workers pull-testers go-fers sign makers setup cleanup persons circle marshals general helpers moving Junior Senior flying Friday have elimi nated day judging however will need judges Friday handle both Open semi finals younger set Lanny hopes some Open fliers qualify Friday may want help Junior-Senior flying day speaking older things Fox 35 Stunt engine has continuous pro duction 34 years still very popular engine can very good beginning engine Stunt Jim McClellan Burlingame CA Sig Chipmunk Its finished MonoKote Pactra Formula U paint uses OS Max 35 proper plane/engine combination can go way victors stand old General Atlanta Stunt Conspiracy Tom Dixon out car racing business back model airplane world Tom has long-time advocate 35-size airplanes has spent lot time reworking Fox 35s Scott Bair research engineer Georgia Tech have experimented altering crank shaft Fox using different heads compression ratios Regarding crankshaft Tom advises balanc ing part lower vibration smoother op eration Tom also substitutes various heads older Fox 36s 36X engines dome recut give power Fox 35 Stunt has put together four packages rework modi fications engine can meet com petition needs pocketbook almost modeler Stage package includes new Fox 35 engine has disassembled put back together careful fitting parts lapping piston sleeve new needle valve asContinued page 164 68 Model Aviation Matthew Bauer dad start repairing Matts modified Top Flite Tutor after wind caught 1982 Nats flew again photos Larry Kruse wrnay urTnowsKls executioner nas janrasuc rinlan wynn going feature descriptions Windys finishing methods future columns model has ST 60 printing cowl just above trim stripe reads Custom Engine Parts Kinetic Analysis connecting rods made best materials available designed give long service snd eliminate rod breakage modern high-Perfor mance model engines Used leading aircraft boat car racers hobbyists Rods available popular model engines Look RPM new innovative products proven performance records Richardson Precision Machining Inc 5070 Golden Dr. San Jose CA 9512914081257-7059 162 Model Aviation Late items Ted Davey gent has producing DSC retrieval system has new winch market called POWRTOW photo shows its low-slung look Dave claims can launch ther lightest Two-Meter ship can also haul Il-lb cross-country bird air ease winch features solenoid-protected foot switch 1800 ft 15-lb-test line parachute hall bearing line swivel welded frame line drum low profile measures 235 x 12 x 9 weight less battery 40 lb further infor mation write Davey Systems Corp Wood Lane Malvem PA 19355 phone 215 644-0692 Two-Meter World Cup fourth running 2MWC will hosted Modesto Radio Control Club Five identical winches have fashioned event past will man-on-man event Entry forms will mailed out May l983 entries will close May 31 l983 event scheduled June 11-12 1983 further information contact Mr Ed Sb bod 9626 Jellico Ave Northridge CA 91325 phone 2l3 349-4758 Good Lift Doi Pruss 131 E Penninglon Ln Plainfleld IL 60544 Comanche/Perez-Kruse Continued page 67 ing shape both panels complete stage join dihedral spar liber ally epoxied place main landing gear legs bent 5/32-in wire I-bolted spar locations shown Tweak bit necessary make sure wheels track parallel fashion Sport Scale gear shown plans sake simplicity however Jeff chose machine front landing gear fork Precision Scale ship key stock attach setscrew two L-shaped brackets main gear done same fashion After main frame wing put together place nacelle assembly di rectly over leading edge main spar good glue bond can obtained tween pieces particularly leading edge Epoxy nacelles wing checking carefully adjusting necessary assure alignment sembly cures Notice Jeff didnt find necessary use engine thrust offset order keep plane out lines Drill necessary mounting holes temporarily mount engines tanks position Now bellcrank platform can ep oxied place Roberts upright bellcrank bolted-on Route braided cable Gold N Rod its plastic casing through wing rib spar structure and nacelle dual throttle controls 1/16-in music wire pushrod wrapped soldered braided cable attaches throttle arm bellcrank will necessary drill hole just inside original third line location order attach pushrod Since both engines operating same throttle cable carburetor control horns will have placed opposite other Otherwise high setting engine will low setting other Check assembly several times make sure its binding hanging up point particularly conscious possibility muffler interfering carburetor control horn pushrod up position After three lead-outs strung bellcrank sheet lifting surfaces wing 1/16 balsa nacelle areas will need planked some filling-in small balsa blocks will probably neces sary Cowls both engines can laid up fiberglass over carved form using balloon method molding stabilizer rudder both cut /4-in sheet sanded airfoil shape stabilizer presents special case because must mounted fuselage unit along its maple bearing block Re inforce weak spot rear stab shown inset plywood doublers mounting block can drilled out 5/32-in ID brass tube will serve bushing 5/32-in music wire control horn will need solder horn itself music wire slip wire through maple block bushing bend the top view however mounted conventional location wing flaps [6 [I7I7IDealer inquiries also mixed provide aileron action Both PIRANHA GAMMA have foam liii LFIi\j1J Incinvitedwings wood sheeting EconoKote covering High performance modeland workmanship flawless about engine connecting rodsthese birds information comes Get install dont take off Ken Willard RCM SERVO GARD SERVO GARD monitors airborne flight battery peek voltage well radio sigesi received transmitter receiver malfunction detected pan system SERVO GARD reduces throttle automatically ample time before battery failure safely land model SPECIFICATIONS Size Unit installed KPS-14 servo case foreasy installation Just plug throttle servo output Weight Approx 1 oz Sensitivity Accurate within 02 Volts Servo Pulse Unit shipped positive poise systems negative pulse available upon request SERVO GARD comes complete pre-wired pigtails servo connectors choice installed Ispecify connector type order SEE YOUR DEAL ER OR ORDER DIRECT DEALER INOUIRIES IN VI TED Price $3795 Postpaid ISpecify connector type positive negative pulse ordering ENDORSED BY THE SPIRIT OF AMERICA SHOW TEAM LIMA OHIO RF Enterprises 106 N Main St Arlington OH 45814 419 365-5360 arms horn approximate shape shown plans bottom stab should slotted accept control horn wire filled mi croballoons epoxy strength completed stab assembly can set ide until needed fuselage rudder will require little sanding shape however rudder light does enhance planes scale effect con siderably simulated light can filed shape red Lucite plastic fitted aluminum tube ring its base fuselage probably important difficult construction phase aircraft Since keel crutch former assembly would well worth time first construct simple jig aid con struction jig should have base /4-in /2-in plywood approximately long fuselage about 6 wide Scribe lines fuselage formers would located along jig base glue nail vertical pieces / X 6 x 6 plywood base vertical pieces will serve hold formers correct angle insertion keel crutch Its probably best cut vertical slot about /2-in wide center former holder allow clearance keel nose gear should mounted Former before commencing stallation keel crutch Use rubber cement attach formers jig assembly reposition Plank fuselage using alternating strips balsa first side directly opposite order avoid pulling fuse lage off center causing develop torsional twist As wing constantly check alignment As planking pro gresses cut away areas necessary mount both stabilizer wing soon fuselage strong enough permit handling excessive bending possible misalignment Epoxy wing stabilizer place checking position both relative other fuselage Hook up stab pushrod adjust its length achieve neutral stab setting bellcrank neutral After planking complete window areas can cut out temporarily fitted celluloid Temporarily install soft balsa block windshield area carve shape use form molding actual windshield Sigs heavy-gauge clear plastic can used form wind shield Heating large piece plastic PLANES 82/83 IMA Plans Handbooks No 1 Free Flight Planes No 3 Trains Steam Engines No 4 Radio Control Planes No 5 Scale Drawings Planes Radio Modeller Planbook R/C FF Scale Any ONE above PLUS TAUBMAN catalog planes $275 plus $125 3rd class domestic ship ping Can Mex overseas surface mail overseas airmail $400 ONE plans handbook add $200 per EACH plus $ 50 shipping * ** * * * * * * * * * BOATS TAUBMANS 83/84 Boat catalog whopping 140 pages 1000 illustrated plans books galore some interes j-ting stuff PLUS 82/83 IMA Plans Handbook No 2 boats cars $350 plus $150 domestic 3rd class shipping Can Mex overseas surface mail $250 Air mail Eur & So Amer $700 Pac area $900 interested warships liners merchant marine send additional $1 O0forthe Wiswesser catalog sending inquiries please include aSASE TAUBMAN PLANS SERVICE 11 College Drive Box 4G Dept MA Jersey City NJ 07305 May1983 163 formers necessary align keel crutch installation proceeds entire fuselage covered /8 EW FOR 83 balsa planking however wider pieces balsa can used fuselage top bottom area nearly flat may helpful soak planking strips hot water liberally laced ammonia make pliable enough negotiate curves fuselage particularly toward nose area over electric stove gloved hands please until begins smoke will make pliable enough jam down over balsa windshield form make good compound curve may take several tries get acceptable windshield patient Finishing detailing Sand entire airplane carefully Fillets can made Sig Epoxolite oras Jeff didwith poly ester resin microballoons Pits dings dents cracks between planking strips can also filled resin microballoon mixture vinyl spackling compound such DAP Apply thin coat Hobbypoxy Quick Prep Resin let cure Scuff-sand first coat apply second thin coat -J Apply heavy grade silkspan silk second coat still wet pulling out wrinkles surfaces should covered either silk silkspan Jeff used com bination two sake economysilk areas needing extra strength silkspan large flat sur faces Tack down edges may have come unstuck let second coat resin cure Now sanding brush third coat resin using full brush attempt flow resin smoothly can probably wont too smooth wetsand carefully 150 200-grit paper Add fourth coat resin time definite glassy sheen should evident Wet-sand last coat 320-grit paper spray light coat primer Jeff used automotive enamel color coats consequently used automotive primer base coat choose Hob bypoxy K&8 Super Poxy alterna tive use respective primers assure compatibility Wet-sand primer coat 400-grit spray white base coat light applications nec essary create good surface trim color use masking tape mask off trim lines very careful remove underlying resin prone let go paint pull tape off too hard too sharply Rub out final finish good com mercial grade rubbing compound ap ply several coats automotive wax pro tect hard work windows windshield landing gear doors other bits pieces trim can added now keep various antennas breaking off Jeff molded silicone rubber attached fuselage See CL Scale column October 1978 Model Aviation details Side curtains windows made folded paper towels Logos hand-painted press type letters art supply store spelled out No Step warnings Flying plane has built per plans instructions will very light easy manage air However single-engine performance marginal best certain both engines synchro nized nearly possible ear prepare first flight Twin-engine airplanes little like bi planes carry definite magical properties air sound twinis singing unison around circle will automatically gather crowd time fly Good luck version Twin Comanche Reference Sources Francis Devon Mr Piper Cubs Iowa State University Press Ames IA 1976 pp 178 179 188 194 195 202 Janes Worlds Aircraft 1972-73 John R Taylor ed McGraw-Hill Book Company New York NY p 406 Janes Worlds Aircraft 1973-74 John R Taylor ed McGraw-Hill Book Company New York NY pp 409-410 Janes Encyclopedia Aviation Vol 5 M J H Taylor ed Grolier Company Danbury CT 1980 pp 896 898 CL Aerobatics/Paul Continued oaoe 68 sembly substituting Allen-head screws head backplate modifying engine take Fox Stunt Special muffler strap con nection will distort crankcase Price Stage includes new engine $30 plus $250 shipping Stage II includes Stage plus fullybalanced crankshaft lower vibration smoother operation Price Stage II cludes new Fox 35 engine $35 plus $250 164 Model Aviation TO ORDER PLEASE PRINT NAME ADDRESS Send Check Money Order Ipavable Consumers Guide CONSUMERSGUIDE P0n0X376 GREATFALLSVA 22066 Check Money Order $660 1495 postage/handlingl Overseas Orders $495 ISurface Mail OR $554 lAir Mail Dealer Inquiries Welcome Write Details Special Bulk Discounts AMA Clubs e Details
Edition: Model Aviation - 1983/05
Page Numbers: 64, 65, 66, 68, 162, 163, 164
Do have two 25 engines youd like put good CL Sport Scale model add details CL Scale get ready pick up some contest hardware THE PIPER TWIN COMANCHE came being late 1962 replacement Piper Apache first version Comanche designated PA-30 tested 1965 Comanche available six-seater could equipped tip tanks turbo-charged option Becoming sophisticated Comanche re-introduced 1971 Twin Comanche PA-39 C/R designa use Put Precision tion suffix new counter-rotating props counteracted aircrafts ten dency swing takeoff due engine torque Counter-rotation propellers achieved reversing direction starboard engine shaft Lycoming engineers reversed several components changed firing order cylinders thereby producing mirror image port engine Production Twin Comanche brought halt 1972 flood Pipers Lock Haven plant However during its hey day Twin Comanche held several speed distance records under able piloting Max Conrad also made state-of-the-art design contributions first civilian air craft swept fin all-flying sta bilizer stabilator Jeff Perez member 1982 US Control Line Scale World Championships Team chose Twin Comanche Scale modeling subject its aesthetic appeal because would earn him points judging single-engined craft just happened also Twin Comanche based Lamed KS Jeffs home town owned Reed Peters friend Jeffs Sometimes its convenience rather necessity thats mother invention Jeffs Sport Scale Twin Comanche pre 64 Model Aviation 0 C 0 U 0 U 1 0 0 0 designer Jeff Perez holds up plane us second Scale plane has built real success functioning stepping-stone Jeffs becoming US team member IyJv Design Jeff Perez Text Larry Kruse sented plans came being about four months after initial decision build Precision Scale Twin Comanche took another three months complete Both flew first time 1978 Nats Precision Scale ship 4th Sport Scale plane 2nd Jeff two planes represented real milestone modeling two respec tively second third Scale ships ever built score well early modeling career almost unheard three flight shots across top Mike Gretz Comanche very realistic quite stable flight altitudes of And carry Jeffs story step yond current subject 1982 US Scale Team entry B-17 placed 8th World Championships highest place US team member takes moment fully sink Jeff has accom plished after having built four Scale airplanes entire life return subject hand obvi ous Twin Comanche good ship anyone wanting enter world CL Scale flying features easy construction eye appeal judges automatic bonus points twin-engined aircraft Construction will hastened considerably pre-kitting much plane possible Cut out ribs formers spars plywood pieces prior beginning Glue Part Part B sequence wing should built first Attach nacelles easier alignment wing fuselage glued together Build wing panel time dihedral spar sheeting will glued later Pin down main wing spars over plan slip wing ribs position Use small cardboard triangle nl May 1983 65 Except needle valves sticking up its hard tell model its r-IIII swieme simple easy io execute ano very attractive Jetis planefull-size counterpart Engines well-hidden cowlings view done white green trim black letteringbut still have ample cooling ribs 900 spar tackglue place right now just drop thicker cyanoacrylate CyA glues such Super Jet Super Zap-A-Gap Slip trailing edge spar notches back rib glue place Note spar laps over itself Rib Station 6 leading edge piece next Constantly check alignment during early construction phases need pop rib off wing spars order align perfectly means Twisted wings fly funnyor sat isfied rib adjustment glue ribs permanently CyA tapered trailing edge pieces can added next finally tip blocks Use tip rib template gouge out opening wing tank block before carv Continued page 162 66 Model Aviation Cabin area detail shows windshield can molded heavygauge celluloid Side curtains made paper towels Cabin interior complete Precision Scale version Theres no need such extensive detailing Sport Scale model Jet molded antennas white silicone rubber Rigid ones need constant repairing due frequent damage suffer uowllng made fiberglass Cutouts engine cooling operation made outside flight circle nacelle full-flying stabilizer unique Scale ship control horns pushrods internal dont spoil scale lines plane stock manufactured spinner looks realistic model prop wooden 9-5 Y&O painted simulate aluminum Rudder warning light simple detail adds much overall good effect Control Line AEROBA TICS Wynn Paul GOOD NEWS Old Time Stunt fliers 1983 Nationals will probably have fantastic tumout OTS especially since Massachu setts location will attract Stunt fliers New York-New Jersey-New England area OTS very popular Event Directorof CL Precision Aerobatics Lanny Shorts trying lure John Miske Event Director Old-Time event will probably held Tuesday Nationals week Speaking Event Directors such about stepping up volunteering help Nationals Contact Lanny 661 Louie Ave Lodi CA 95240 Tel 209 368-9492 needs Stunt judges recorders pit workers pull-testers go-fers sign makers setup cleanup persons circle marshals general helpers moving Junior Senior flying Friday have elimi nated day judging however will need judges Friday handle both Open semi finals younger set Lanny hopes some Open fliers qualify Friday may want help Junior-Senior flying day speaking older things Fox 35 Stunt engine has continuous pro duction 34 years still very popular engine can very good beginning engine Stunt Jim McClellan Burlingame CA Sig Chipmunk Its finished MonoKote Pactra Formula U paint uses OS Max 35 proper plane/engine combination can go way victors stand old General Atlanta Stunt Conspiracy Tom Dixon out car racing business back model airplane world Tom has long-time advocate 35-size airplanes has spent lot time reworking Fox 35s Scott Bair research engineer Georgia Tech have experimented altering crank shaft Fox using different heads compression ratios Regarding crankshaft Tom advises balanc ing part lower vibration smoother op eration Tom also substitutes various heads older Fox 36s 36X engines dome recut give power Fox 35 Stunt has put together four packages rework modi fications engine can meet com petition needs pocketbook almost modeler Stage package includes new Fox 35 engine has disassembled put back together careful fitting parts lapping piston sleeve new needle valve asContinued page 164 68 Model Aviation Matthew Bauer dad start repairing Matts modified Top Flite Tutor after wind caught 1982 Nats flew again photos Larry Kruse wrnay urTnowsKls executioner nas janrasuc rinlan wynn going feature descriptions Windys finishing methods future columns model has ST 60 printing cowl just above trim stripe reads Custom Engine Parts Kinetic Analysis connecting rods made best materials available designed give long service snd eliminate rod breakage modern high-Perfor mance model engines Used leading aircraft boat car racers hobbyists Rods available popular model engines Look RPM new innovative products proven performance records Richardson Precision Machining Inc 5070 Golden Dr. San Jose CA 9512914081257-7059 162 Model Aviation Late items Ted Davey gent has producing DSC retrieval system has new winch market called POWRTOW photo shows its low-slung look Dave claims can launch ther lightest Two-Meter ship can also haul Il-lb cross-country bird air ease winch features solenoid-protected foot switch 1800 ft 15-lb-test line parachute hall bearing line swivel welded frame line drum low profile measures 235 x 12 x 9 weight less battery 40 lb further infor mation write Davey Systems Corp Wood Lane Malvem PA 19355 phone 215 644-0692 Two-Meter World Cup fourth running 2MWC will hosted Modesto Radio Control Club Five identical winches have fashioned event past will man-on-man event Entry forms will mailed out May l983 entries will close May 31 l983 event scheduled June 11-12 1983 further information contact Mr Ed Sb bod 9626 Jellico Ave Northridge CA 91325 phone 2l3 349-4758 Good Lift Doi Pruss 131 E Penninglon Ln Plainfleld IL 60544 Comanche/Perez-Kruse Continued page 67 ing shape both panels complete stage join dihedral spar liber ally epoxied place main landing gear legs bent 5/32-in wire I-bolted spar locations shown Tweak bit necessary make sure wheels track parallel fashion Sport Scale gear shown plans sake simplicity however Jeff chose machine front landing gear fork Precision Scale ship key stock attach setscrew two L-shaped brackets main gear done same fashion After main frame wing put together place nacelle assembly di rectly over leading edge main spar good glue bond can obtained tween pieces particularly leading edge Epoxy nacelles wing checking carefully adjusting necessary assure alignment sembly cures Notice Jeff didnt find necessary use engine thrust offset order keep plane out lines Drill necessary mounting holes temporarily mount engines tanks position Now bellcrank platform can ep oxied place Roberts upright bellcrank bolted-on Route braided cable Gold N Rod its plastic casing through wing rib spar structure and nacelle dual throttle controls 1/16-in music wire pushrod wrapped soldered braided cable attaches throttle arm bellcrank will necessary drill hole just inside original third line location order attach pushrod Since both engines operating same throttle cable carburetor control horns will have placed opposite other Otherwise high setting engine will low setting other Check assembly several times make sure its binding hanging up point particularly conscious possibility muffler interfering carburetor control horn pushrod up position After three lead-outs strung bellcrank sheet lifting surfaces wing 1/16 balsa nacelle areas will need planked some filling-in small balsa blocks will probably neces sary Cowls both engines can laid up fiberglass over carved form using balloon method molding stabilizer rudder both cut /4-in sheet sanded airfoil shape stabilizer presents special case because must mounted fuselage unit along its maple bearing block Re inforce weak spot rear stab shown inset plywood doublers mounting block can drilled out 5/32-in ID brass tube will serve bushing 5/32-in music wire control horn will need solder horn itself music wire slip wire through maple block bushing bend the top view however mounted conventional location wing flaps [6 [I7I7IDealer inquiries also mixed provide aileron action Both PIRANHA GAMMA have foam liii LFIi\j1J Incinvitedwings wood sheeting EconoKote covering High performance modeland workmanship flawless about engine connecting rodsthese birds information comes Get install dont take off Ken Willard RCM SERVO GARD SERVO GARD monitors airborne flight battery peek voltage well radio sigesi received transmitter receiver malfunction detected pan system SERVO GARD reduces throttle automatically ample time before battery failure safely land model SPECIFICATIONS Size Unit installed KPS-14 servo case foreasy installation Just plug throttle servo output Weight Approx 1 oz Sensitivity Accurate within 02 Volts Servo Pulse Unit shipped positive poise systems negative pulse available upon request SERVO GARD comes complete pre-wired pigtails servo connectors choice installed Ispecify connector type order SEE YOUR DEAL ER OR ORDER DIRECT DEALER INOUIRIES IN VI TED Price $3795 Postpaid ISpecify connector type positive negative pulse ordering ENDORSED BY THE SPIRIT OF AMERICA SHOW TEAM LIMA OHIO RF Enterprises 106 N Main St Arlington OH 45814 419 365-5360 arms horn approximate shape shown plans bottom stab should slotted accept control horn wire filled mi croballoons epoxy strength completed stab assembly can set ide until needed fuselage rudder will require little sanding shape however rudder light does enhance planes scale effect con siderably simulated light can filed shape red Lucite plastic fitted aluminum tube ring its base fuselage probably important difficult construction phase aircraft Since keel crutch former assembly would well worth time first construct simple jig aid con struction jig should have base /4-in /2-in plywood approximately long fuselage about 6 wide Scribe lines fuselage formers would located along jig base glue nail vertical pieces / X 6 x 6 plywood base vertical pieces will serve hold formers correct angle insertion keel crutch Its probably best cut vertical slot about /2-in wide center former holder allow clearance keel nose gear should mounted Former before commencing stallation keel crutch Use rubber cement attach formers jig assembly reposition Plank fuselage using alternating strips balsa first side directly opposite order avoid pulling fuse lage off center causing develop torsional twist As wing constantly check alignment As planking pro gresses cut away areas necessary mount both stabilizer wing soon fuselage strong enough permit handling excessive bending possible misalignment Epoxy wing stabilizer place checking position both relative other fuselage Hook up stab pushrod adjust its length achieve neutral stab setting bellcrank neutral After planking complete window areas can cut out temporarily fitted celluloid Temporarily install soft balsa block windshield area carve shape use form molding actual windshield Sigs heavy-gauge clear plastic can used form wind shield Heating large piece plastic PLANES 82/83 IMA Plans Handbooks No 1 Free Flight Planes No 3 Trains Steam Engines No 4 Radio Control Planes No 5 Scale Drawings Planes Radio Modeller Planbook R/C FF Scale Any ONE above PLUS TAUBMAN catalog planes $275 plus $125 3rd class domestic ship ping Can Mex overseas surface mail overseas airmail $400 ONE plans handbook add $200 per EACH plus $ 50 shipping * ** * * * * * * * * * BOATS TAUBMANS 83/84 Boat catalog whopping 140 pages 1000 illustrated plans books galore some interes j-ting stuff PLUS 82/83 IMA Plans Handbook No 2 boats cars $350 plus $150 domestic 3rd class shipping Can Mex overseas surface mail $250 Air mail Eur & So Amer $700 Pac area $900 interested warships liners merchant marine send additional $1 O0forthe Wiswesser catalog sending inquiries please include aSASE TAUBMAN PLANS SERVICE 11 College Drive Box 4G Dept MA Jersey City NJ 07305 May1983 163 formers necessary align keel crutch installation proceeds entire fuselage covered /8 EW FOR 83 balsa planking however wider pieces balsa can used fuselage top bottom area nearly flat may helpful soak planking strips hot water liberally laced ammonia make pliable enough negotiate curves fuselage particularly toward nose area over electric stove gloved hands please until begins smoke will make pliable enough jam down over balsa windshield form make good compound curve may take several tries get acceptable windshield patient Finishing detailing Sand entire airplane carefully Fillets can made Sig Epoxolite oras Jeff didwith poly ester resin microballoons Pits dings dents cracks between planking strips can also filled resin microballoon mixture vinyl spackling compound such DAP Apply thin coat Hobbypoxy Quick Prep Resin let cure Scuff-sand first coat apply second thin coat -J Apply heavy grade silkspan silk second coat still wet pulling out wrinkles surfaces should covered either silk silkspan Jeff used com bination two sake economysilk areas needing extra strength silkspan large flat sur faces Tack down edges may have come unstuck let second coat resin cure Now sanding brush third coat resin using full brush attempt flow resin smoothly can probably wont too smooth wetsand carefully 150 200-grit paper Add fourth coat resin time definite glassy sheen should evident Wet-sand last coat 320-grit paper spray light coat primer Jeff used automotive enamel color coats consequently used automotive primer base coat choose Hob bypoxy K&8 Super Poxy alterna tive use respective primers assure compatibility Wet-sand primer coat 400-grit spray white base coat light applications nec essary create good surface trim color use masking tape mask off trim lines very careful remove underlying resin prone let go paint pull tape off too hard too sharply Rub out final finish good com mercial grade rubbing compound ap ply several coats automotive wax pro tect hard work windows windshield landing gear doors other bits pieces trim can added now keep various antennas breaking off Jeff molded silicone rubber attached fuselage See CL Scale column October 1978 Model Aviation details Side curtains windows made folded paper towels Logos hand-painted press type letters art supply store spelled out No Step warnings Flying plane has built per plans instructions will very light easy manage air However single-engine performance marginal best certain both engines synchro nized nearly possible ear prepare first flight Twin-engine airplanes little like bi planes carry definite magical properties air sound twinis singing unison around circle will automatically gather crowd time fly Good luck version Twin Comanche Reference Sources Francis Devon Mr Piper Cubs Iowa State University Press Ames IA 1976 pp 178 179 188 194 195 202 Janes Worlds Aircraft 1972-73 John R Taylor ed McGraw-Hill Book Company New York NY p 406 Janes Worlds Aircraft 1973-74 John R Taylor ed McGraw-Hill Book Company New York NY pp 409-410 Janes Encyclopedia Aviation Vol 5 M J H Taylor ed Grolier Company Danbury CT 1980 pp 896 898 CL Aerobatics/Paul Continued oaoe 68 sembly substituting Allen-head screws head backplate modifying engine take Fox Stunt Special muffler strap con nection will distort crankcase Price Stage includes new engine $30 plus $250 shipping Stage II includes Stage plus fullybalanced crankshaft lower vibration smoother operation Price Stage II cludes new Fox 35 engine $35 plus $250 164 Model Aviation TO ORDER PLEASE PRINT NAME ADDRESS Send Check Money Order Ipavable Consumers Guide CONSUMERSGUIDE P0n0X376 GREATFALLSVA 22066 Check Money Order $660 1495 postage/handlingl Overseas Orders $495 ISurface Mail OR $554 lAir Mail Dealer Inquiries Welcome Write Details Special Bulk Discounts AMA Clubs e Details