Duralion 0 Bob Meuser Bk~AB AK D I/ 7/ / CIRCULAR ARCS arc circle smoothest way get surprising found frequently model aircraft designs door airfoils portions fuselage profiles wing planforms shallow arcsarcs large radiusmay inconvenient draw using beam compass sim ple way lay out shallow arc compass Suppose wish make template indoor wing ribs having chord 7 er no use drawing paper first scribe directly 025 aluminum template stock gave up plywood templates years ago Refer sketch Snip off piece stock 7 long inch wide Divide chord eight equal spaces B end scribe line ightedge C Connect quarter points indi cated D connect one-eighth points indicated snip along straight lines knock off corners file ready slice ribs prefer bit snipping bit less filing snip off corners between 1/16 points Simply eyeball cuts starting ending midway tween /s points Sketch E shows results Kjk IjJ Now suppose wish fair line tween some point along top edge fuselage lower point nose easy think half indoor rib template Sketch F shows works lied arent circular arcs theyre parabolas far differ ent parabolic development shown early Zaic Yearbooks shal low curves however circular arc parabola virtually identical indoor rib template used example difference about 001 Check Wind Check mentioned wind checks Balsa article June 1976 issue perhaps didnt emphasize enough account talk Sal Taibi appeared Flighiplug called attention Wind checks appear fine lines running across grain caused excessive compressive stress dowr-wind side tree probably also beating tree takes during felling transportation lumber ing severe cases examined under microscope grain wood will appear folded back itself 5 shape Although wood has tech nically failed still quite strong compression tension bending forget According Sal wind checks account lot broken models can see takes patience practice Flex wood snaps pre maturely probably result wind check Now have ruined stick balsa own subjecting Meu ser Test what you spot wind checkeither eye flex testzap drop cyano acrylate adhesive Jet Eastman 910 Zip Grip Hot Stuff whatever cases will seep damaged region harden salvage otherwise OK hunk balsa Wind checks prevalent lowdensity balsa hard balsa Non-Report USFF Champs Clarence Haughts report USFFC appeared ModA v last month Ill just report few personal observations felt pretty good non-reporting felt pretty good chasing own model off boonies instead someone elses felt pretty good seeing someones C model caught phone lines feeling compelled dash madly back camp get camera felt pretty good able totally ignore what going some event chose get intensely engrossed some event merely because intensely engrossing because commitment cover event whether gave two cents Non-reporting could become habit forming Novice Pennyplane event presented few surprises first time Novice Pennyplane has flown USFFC previously flew Pennyplane 36 Model Aviation Carl Linstrum set new AMA records Payload Clipper Cargo simple Jedeisky Pay Later published MAN plan Strangely Pennyplane very popu lar what little popularity bad seemed waning event danger being clobbered So Novice Pen nyplane substituted Surprisinglyto leastparticipation up dramat ically general level performance astounding Right durations exceeded made previously less restricted Pennyplane-class models competition keen four five models clearly potential win winning time close AMA National record despite low ceiling about 20 feet arrays fluorescent lamps compared 35 ft allowed Category Bill Vanderbeek novel approach although Im sure planned way After hitting light diving model would come down almost floor before started climbing again So used 20-ft ceiling three four times flight contrast model recovered quickly survive about 20 encounters lights flight ultimately got hung up Hoffman won both Novice Pennyplane Easy-B surprising won Easy B 76 Nats took second Pen nyplane Easy B 1976 USFFC wasnt such nice guy could learn hate him outstanding performances Novice Pennyplane led Clarence Mather re mark severe restrictions make line original purpose Pennyplane event regular Pennyplane event might well dropped motherly instincts inhibit agreeing totally last part Ill have admit has good point Hoffmans Easy B prop must difficult-to-build prop ever concocted mind man beast Basically built-up prop such would build microfilm-covered model cover ing first blush might appear condenser paper actually paper-thin sheet balsa rules specify propeller blades shall constructed en tirely wood tempt rules-mongers keeping things simple Rules never foolproof nothing As Edward Teller used say about safety aspects nuclear reactors fool al ways greater proof Having out Gas some ten years thought Id give Class D try Im working up gradually tried 020 Payload event year double dis placement year mere five years Ill up Class D covered Payload model built 1970 managed get tuned up pretty well also learned start Tee Dee 02 needle set fast running Flood heck Out So trudged out Payload area spread out prayer rug started engine first flip quickly shut down fore chance die itself Continued page 90 October1977 37 Veteran FAI flier Tom McLaughlan uses folding prop 1977 Streamliner 62 years young Tom represented US free/flight World Championships Denmark Linstrum pic Duane Osborn Jr Class B Pearl Duster hybrid Starduster Pearl series like see sun through wings exposed frame youll like Mylar Linstrum picl Rebel flag decorated C job readied last 101 WL Johnson Dig snip enlarged trom FAI machine Bob Sifleet design cold note garb Linstrum picl see local hobby dealer t$ 4 RUBBER & CO2 WINNER AT THE 5OthNATS 7 4101 22 I/2 WINGSPAN 5695 about two ounces extension youre looking some nose weight might try standard Supertigre muffler S29B ST 46 weighs about three oz sells $1295 Also newer type OS Max mufflers come engines good nose weight small Tatone will help front-end stability after some cutting hogging fit either Max Fox some areas Enya M-200 muffler ST 46 may still available fairly light item costing about $800 Bill Werwage used some time USA-I Murphy Maxi-muffler $1095 can used desired rather large has asbestos-type covering expands higher engine rpm As best writer can find MAC Silenceair mufflers no longer being imported although may hiding some hobby shops around country may also able find old-style Max mufflers still popular East coast writer has using Merco muffler since 1971 difficult obtain will bolt right up ST 46 experimenting HP-40 engine have Dan Shafer Bill Eybers Bill Werwage could use straight HP muffler rather big heavy could Dan Shafer has cut almost A0yeors ago— p --N *108 Earl Stahls famous 28 WINGSPAN S62 Send free brochure FLYLINE MODELS 2820 DORR AVE FAIRFAX VA 22030 off HP muffler leaving some metal around extension bolt DuBro fins what left Takes little genuity works well Dan Bill Eybers converted old-style Max muffler exhaust extension bolted HP engine Bob Paul muffler has used both Bill Werwage Bob Gieseke Fox Supertigre HP 40 ever Bob has series misfortunes past Spring including ruined apart ment burst water pipe probably will get production until late Fall does get back gear lit tle muffler good Two other examples fine little home made mufflers chrome-plated ones made up Chuck DeLano Indianapolis Dennis Duvall currently using latest semi-scale MIG Bill Scott Cincinnati has created unique little muffler-extension combina tion very effective opened up drilling out holes bottom aluminum extension what its worth writers opin ion new Gene Martine muffler looks like best lot both perform ance delivery machine work beautiful muffler works un sightly Gene aware supply demand problems have hurt K COMPLETE THIS FORM AND ATrACH MAILING LABEL FROM RECENT ISSUE move please let us know advancesix weeks re quired change address Attach current MA mailing label check appropriate box mail Subscription Dept. Model Aviation 815 Fifteenth St. NW. Washington DC. 20005 check appropriate boxenclose payment 0 NEW SUBSCRIPTION 0 CHANGE OF ADDRESS Non-AMA subscription rates $1200 12 months Canada United States possession elsewhere $1400 NAME ADDRESS CITY/STATE _____________________________________________ ZIP _______________ MODEL AVIATION 815 FIFTEENTH ST. NW. WASHINGTON DC 20005 some other good products Slim Line muffler will also catch simple small available want Max 35 engine re worked let writer suggest Tom Lay regarding workmanship service communication Bob Whitely Ron Mer rill Vincent Judd Val Britton re ported turn-around service has two three weekswhich bad Tom will modify piston head ven turi needle valve hand-lap piston sleeve precision assemble engine Cost $1000 plus postage plus new parts required Tom also has available T & L custom 40 stunt engine reworked Max 35 displacement 4000037 power similar Supertigre 46 engine will drop right mount holes Max 35 will make overweight 35-size ship flyable information prices above write Tom Lay T & L Model Specialties P0 Box 6052 Torrance CA 90504 information stunt PAMPA write author Wynn Paul 1640 Maywick Dr Lexing ton KY 40504 FF Duration/Meuser continued page 37 still pretending know what doing threw cat-tail seeds possible di rection seen big-time Wakefielders What didnt hit ground hard bounced blew back face some started going up refirerl engine dropped model onto takeoff board laid nicest thermal could hope Somehow managed pull off fraud three times row other maxerEdward Eliot holds national record event bombed fourth flight mere 105 figured cinched Id have try real hard get flight bad 105 inquired loud voice what would take beat national record pondered thoughtfully whether could get maxes before end contest proceeded put model large downer mere 55 seconds comforted neat model looked landing its wheels dont have try very hard get flight bad 105 Payload Early meet Will Nakashima mentioned about run out material cartoons end Day Three enough last decade No Non-Cents Strikes Again Chalk up another four AMA national records No Non-Cents See construction article June issue Mike Van Gorder age 11 put together flight 931 under Category II ceiling height Second NIMAS International Record Trials West Baden Indiana June As 90 Model Aviation Stahl design __OGA 10% FOR PACKING AND POSTAGE VA RESIDENTS ADD 4% TAX 24 I/5 WINOSPAId 5 Gordon Fisher built VTO design called Union Jack Frost Coupe dHiver model plans published MAN Dave Linstrum pic writing record has homolo gated Inasmuch model qualifies Novice Pennyplane since NP subset thats New Math talk sonny Pen nyplane flight qualifies both Junior Novice PP Pennyplane records quite some flying Novice PP event least record going tough beat especially good consid ering Mike started building door models January Mikes dad Walter reports model especially easy fly adjustment required minor adjust ment wing incidence angle Another pair records chalked up July 2 Marnie Meuser ten-yearold granddaughter using straight-tip product review product review product review RFM Meter Designed RS Systems ser jous RC enthusiasts interested preventive maintenance assure high degree relia bility meter clips transmitter tenna about half way between case top full extended antenna Cali brated use 72-75 MHz band pro vides measure RF voltage actually present point antenna Chang es reading indicate actual changes energy Changes meter reading reflect changes power outputwhich could battery charge condition improper tuning damaged components temperature-sensitive components etc requiring checking qualified service center meter requires no batteries RS Systems 5301 Holland Dr Beltsville MD 20705 product review product review product review Because know model building cant done type glue Thats Hobbypoxy makes three Formula 1 general purpose epoxy glue gives 15 minutes work ing time cures hard hour Thats just about right construction instsllation components need shifted around bit perfect alignment before glue sets Formula 2 has much longer working time 45 minutes makes per fect large-area laminating planking wings can put glue ribs position skins pin down before glue hardens Formula 2 also recommended fiberglass layup fuel-proofing engine compartments surfacing resin bare balsa* Formula 4 superior version popular five minute epoxies Great quick construction quick repairs perfect joining parts impossible clamp pin st hand-hold few short minutes its done Hobbypoxy epoxy glues completely fuel proof permanently flexible Joints will never crack shatter way some other epoxies contrary popular myth Hobbypoxy epoxy glues will adhere cure properly prepared fiberglass So whatever youve got glue glue Hobby poxy original epoxy models *For complete description use Formula 2 finishing send free Poxy Painting Pointers brochure Wr te word glue request 20 Pine Street Rockaway NJ 07866 flflflIA flfl sion Pettit Paint Co Inc version shown alternative plans Category III record time 733 set 80 X 40-ft Wind Tun nel Sunnyvale Bruce Armstrong established previous records year earlier Attempts better Pennyplane score using 14 prop success ful severe warp developed time ran out So makes six official national rec ords No Non-Cents five stand time writing Id certainly like hear have built No Non-Cents-your successes difficulties such feedback can improve breed F/F Supplies Source looking October1977 91 3 epoxy glues Dave Haitman Blue Ridge Models Square Eagle P30 plasticprop rubber design dad Phil Hartman Pic Dave Linstrum KITS S SSORIES Daly 4CE 17 SPAN STOCK NO PP15 KIT $425 BROWN CO-2 ENGINES ENGINES ARE IN STOCK NEW CHAEGEE AND S SIZES OP TANKS BROWN ENGINES MUST RE ORDIRED DIRECT FROM PECK-POLYMERS 4 WALNUT SCALE KITS BABY ACE$423 PEANUT SCALE KITS PIPSE J3 CUR$329 FIETBEPOL $329 MILES $329 TURBULENT $329 MUSTANG$349 ZERO$349 COUGAR $349 ANDRSASO9I.$349 GIPSY MOTH.-$349 GANAGOBIE. $349 SPORT MODEL KITS ONE NITS SR$473 ONE NITE 16$349 STRINGLESS WONDER- POcK ROG$139 KITS 0 PLANS 0 ACCESSORIES REAL JAPANESE TISSUE-PROPS COMPLETE CATALOG 5O MANY HARD TO FIND ITEMS D~D*Iuiup P 0 BOX 2498 -AMA LA MESA CALIF 92O4 FNONE 17141 4694673 1 442-4636 one-stop mail-order source try Creative Native 14548 Seventh St Vic torville CA 92392 Twenty-five cents will get eight-page price list Included such things nitrate dope Floquil paint balsa spruce 1/32-square upward Peck Sig Sterling Tern Aero Micro-X kits tissue Wylam plans Williams Bros parts chemicals sorts goodies Country Boy Kit Jim Clems Country Boy featured March issue now avail able kit form dealer doesnt have order direct Clemcraft PO Box 524 Sand Springs OK 74063 FAI Supply Attention Modelers Wives Saturday bought new garden hose highest quality new power lawn mower Sunday accidentally cut new hose half new lawn mower Now moral story modelers wives should require husbands take time away modeling order water garden mow lawn such.. Bob Meuser 4200 Gregory St Oak land CA 94619 Fokker D-VII I/Owens continued page 20 planking nose block pre-shaped added Complete stub wing plank ing top epoxy coating axle slots placing shock mount screws whole working gear simple con struct presents very scale-like action ground maneuvers landing cabane struts bent using small propane torch careful heat local bend area dull cherry-red color maintain spring temper much wire possible Dont heat around dope alcohol fumes might happen around balsa scraps work bench main tained location bending marking wire blackboard chalk can take heat disappearing know exactly bend during heating-bending process Al ways begin bending project center piece work outward allowing two inches extra ends errors making final bends easier form home-made spade bolts fabri cated threaded steel rod ends ing heated cherry red hammered flat Dont hammer piece unless part remains hot cracking may oc cur 1/16 hole drilled edges chamfered prevent wear plastic devices Note spade part bent angle threaded part Now heat part up cherry red again slowly let cool gives tempering effect part J bolts made similar fash ion again being careful avoid cold working bends will find bending around nail scrap piano wire held vise will make process quite simple Dont forget soft temper pieces 12 aluminum clips fabricated initially bending aluminum around prebent piano wire part fi nally held Next wire U-shaped aluminum squeezed vise together tighten U final bend retain wire made putting tails U vise just above bottom wire vise now closed tails holding wire clip place pressing downward suitable mounting hole drilled edges trimmed complete clip As fair amount strut length cover balsa fairings word about order began selecting enough x medium-hard hard balsa stock job shaped final oval cross section planing sanding Finally set up Dremel tool drill press guide clamped set rout out U groove down center proper depth engine tank installation require much description other say have run engine pressure have experienced un usual feed problems will say fill tank carry aircraft starting line before starting engine will -flood engine time Carry craft fuel line disconnected visible tank quickly detach able rubberband mount feature has well worth addition Since DVIII has plenty cowl room dont recommend behind-the-firewall tank stallation up front location keeps things nice clean inside radio compartment aids balancing process cowl mounted homemade aluminum clips held place self-thread ing screws Washers epoxied cowl avoid tightening screws di rectly against softer cowl materials top engine mount drilled self-threading screw used considerably stiffen whole works may notice heavy wire soldered glow plug terminal led out small hole cowl side makes clipping glow plug leads snap did have drill hole Austin Craft plug wrench straight through allowing wire run plug inserted removed servo installation certainly does lack space plan shows Yo-in plywood mounts servos Dont skimp servo mounting battery its foam covering mounted plywood cross piece rubberbands far forward possible radio three servos used balance craft after cover ing installation will vary shown get internal work completed before covering goes Notice have used rubberband put light tension internal antenna makes radio installation removal easy keeps antenna clean avoids kinks prevents overstressing wire surface throws set up follows ailerons 1 up elevator 2 up 2 down rudder has 2 right left deflections throws may seem large result positive control during taxiing slow flight routines large enough require constant attention during higher speed flight particular color scheme flown Jagdstaffel 6 late 1918 tail col ors alternating black white Super Monokote strips crosses white Monokote overlaid black overlaying generally making botch try method Using very point iron carefully lightly tack white down done along center line outward middle cross center firmly tacked work outward four intersections sweeping motion might add lots patience required black Mon okote overlaid using same outward semi-circular motion iron Tack down well wont get away Also never press down hard lead ing edge iron first passes Press hard trailing edge 92 Model Aviation FL WITI aUGUR Ga c93 peWUR 0 WaLNUT SCALE ASK FOR OUR KITS AND ACCESSORIES AT YOUR LOCAL DEALER IF NOT AVAILABLE AT YOUR DEALER ORDER DIRECT ADD ROE POSTAGE
Edition: Model Aviation - 1977/10
Page Numbers: 36, 37, 90, 91, 92
Duralion 0 Bob Meuser Bk~AB AK D I/ 7/ / CIRCULAR ARCS arc circle smoothest way get surprising found frequently model aircraft designs door airfoils portions fuselage profiles wing planforms shallow arcsarcs large radiusmay inconvenient draw using beam compass sim ple way lay out shallow arc compass Suppose wish make template indoor wing ribs having chord 7 er no use drawing paper first scribe directly 025 aluminum template stock gave up plywood templates years ago Refer sketch Snip off piece stock 7 long inch wide Divide chord eight equal spaces B end scribe line ightedge C Connect quarter points indi cated D connect one-eighth points indicated snip along straight lines knock off corners file ready slice ribs prefer bit snipping bit less filing snip off corners between 1/16 points Simply eyeball cuts starting ending midway tween /s points Sketch E shows results Kjk IjJ Now suppose wish fair line tween some point along top edge fuselage lower point nose easy think half indoor rib template Sketch F shows works lied arent circular arcs theyre parabolas far differ ent parabolic development shown early Zaic Yearbooks shal low curves however circular arc parabola virtually identical indoor rib template used example difference about 001 Check Wind Check mentioned wind checks Balsa article June 1976 issue perhaps didnt emphasize enough account talk Sal Taibi appeared Flighiplug called attention Wind checks appear fine lines running across grain caused excessive compressive stress dowr-wind side tree probably also beating tree takes during felling transportation lumber ing severe cases examined under microscope grain wood will appear folded back itself 5 shape Although wood has tech nically failed still quite strong compression tension bending forget According Sal wind checks account lot broken models can see takes patience practice Flex wood snaps pre maturely probably result wind check Now have ruined stick balsa own subjecting Meu ser Test what you spot wind checkeither eye flex testzap drop cyano acrylate adhesive Jet Eastman 910 Zip Grip Hot Stuff whatever cases will seep damaged region harden salvage otherwise OK hunk balsa Wind checks prevalent lowdensity balsa hard balsa Non-Report USFF Champs Clarence Haughts report USFFC appeared ModA v last month Ill just report few personal observations felt pretty good non-reporting felt pretty good chasing own model off boonies instead someone elses felt pretty good seeing someones C model caught phone lines feeling compelled dash madly back camp get camera felt pretty good able totally ignore what going some event chose get intensely engrossed some event merely because intensely engrossing because commitment cover event whether gave two cents Non-reporting could become habit forming Novice Pennyplane event presented few surprises first time Novice Pennyplane has flown USFFC previously flew Pennyplane 36 Model Aviation Carl Linstrum set new AMA records Payload Clipper Cargo simple Jedeisky Pay Later published MAN plan Strangely Pennyplane very popu lar what little popularity bad seemed waning event danger being clobbered So Novice Pen nyplane substituted Surprisinglyto leastparticipation up dramat ically general level performance astounding Right durations exceeded made previously less restricted Pennyplane-class models competition keen four five models clearly potential win winning time close AMA National record despite low ceiling about 20 feet arrays fluorescent lamps compared 35 ft allowed Category Bill Vanderbeek novel approach although Im sure planned way After hitting light diving model would come down almost floor before started climbing again So used 20-ft ceiling three four times flight contrast model recovered quickly survive about 20 encounters lights flight ultimately got hung up Hoffman won both Novice Pennyplane Easy-B surprising won Easy B 76 Nats took second Pen nyplane Easy B 1976 USFFC wasnt such nice guy could learn hate him outstanding performances Novice Pennyplane led Clarence Mather re mark severe restrictions make line original purpose Pennyplane event regular Pennyplane event might well dropped motherly instincts inhibit agreeing totally last part Ill have admit has good point Hoffmans Easy B prop must difficult-to-build prop ever concocted mind man beast Basically built-up prop such would build microfilm-covered model cover ing first blush might appear condenser paper actually paper-thin sheet balsa rules specify propeller blades shall constructed en tirely wood tempt rules-mongers keeping things simple Rules never foolproof nothing As Edward Teller used say about safety aspects nuclear reactors fool al ways greater proof Having out Gas some ten years thought Id give Class D try Im working up gradually tried 020 Payload event year double dis placement year mere five years Ill up Class D covered Payload model built 1970 managed get tuned up pretty well also learned start Tee Dee 02 needle set fast running Flood heck Out So trudged out Payload area spread out prayer rug started engine first flip quickly shut down fore chance die itself Continued page 90 October1977 37 Veteran FAI flier Tom McLaughlan uses folding prop 1977 Streamliner 62 years young Tom represented US free/flight World Championships Denmark Linstrum pic Duane Osborn Jr Class B Pearl Duster hybrid Starduster Pearl series like see sun through wings exposed frame youll like Mylar Linstrum picl Rebel flag decorated C job readied last 101 WL Johnson Dig snip enlarged trom FAI machine Bob Sifleet design cold note garb Linstrum picl see local hobby dealer t$ 4 RUBBER & CO2 WINNER AT THE 5OthNATS 7 4101 22 I/2 WINGSPAN 5695 about two ounces extension youre looking some nose weight might try standard Supertigre muffler S29B ST 46 weighs about three oz sells $1295 Also newer type OS Max mufflers come engines good nose weight small Tatone will help front-end stability after some cutting hogging fit either Max Fox some areas Enya M-200 muffler ST 46 may still available fairly light item costing about $800 Bill Werwage used some time USA-I Murphy Maxi-muffler $1095 can used desired rather large has asbestos-type covering expands higher engine rpm As best writer can find MAC Silenceair mufflers no longer being imported although may hiding some hobby shops around country may also able find old-style Max mufflers still popular East coast writer has using Merco muffler since 1971 difficult obtain will bolt right up ST 46 experimenting HP-40 engine have Dan Shafer Bill Eybers Bill Werwage could use straight HP muffler rather big heavy could Dan Shafer has cut almost A0yeors ago— p --N *108 Earl Stahls famous 28 WINGSPAN S62 Send free brochure FLYLINE MODELS 2820 DORR AVE FAIRFAX VA 22030 off HP muffler leaving some metal around extension bolt DuBro fins what left Takes little genuity works well Dan Bill Eybers converted old-style Max muffler exhaust extension bolted HP engine Bob Paul muffler has used both Bill Werwage Bob Gieseke Fox Supertigre HP 40 ever Bob has series misfortunes past Spring including ruined apart ment burst water pipe probably will get production until late Fall does get back gear lit tle muffler good Two other examples fine little home made mufflers chrome-plated ones made up Chuck DeLano Indianapolis Dennis Duvall currently using latest semi-scale MIG Bill Scott Cincinnati has created unique little muffler-extension combina tion very effective opened up drilling out holes bottom aluminum extension what its worth writers opin ion new Gene Martine muffler looks like best lot both perform ance delivery machine work beautiful muffler works un sightly Gene aware supply demand problems have hurt K COMPLETE THIS FORM AND ATrACH MAILING LABEL FROM RECENT ISSUE move please let us know advancesix weeks re quired change address Attach current MA mailing label check appropriate box mail Subscription Dept. Model Aviation 815 Fifteenth St. NW. Washington DC. 20005 check appropriate boxenclose payment 0 NEW SUBSCRIPTION 0 CHANGE OF ADDRESS Non-AMA subscription rates $1200 12 months Canada United States possession elsewhere $1400 NAME ADDRESS CITY/STATE _____________________________________________ ZIP _______________ MODEL AVIATION 815 FIFTEENTH ST. NW. WASHINGTON DC 20005 some other good products Slim Line muffler will also catch simple small available want Max 35 engine re worked let writer suggest Tom Lay regarding workmanship service communication Bob Whitely Ron Mer rill Vincent Judd Val Britton re ported turn-around service has two three weekswhich bad Tom will modify piston head ven turi needle valve hand-lap piston sleeve precision assemble engine Cost $1000 plus postage plus new parts required Tom also has available T & L custom 40 stunt engine reworked Max 35 displacement 4000037 power similar Supertigre 46 engine will drop right mount holes Max 35 will make overweight 35-size ship flyable information prices above write Tom Lay T & L Model Specialties P0 Box 6052 Torrance CA 90504 information stunt PAMPA write author Wynn Paul 1640 Maywick Dr Lexing ton KY 40504 FF Duration/Meuser continued page 37 still pretending know what doing threw cat-tail seeds possible di rection seen big-time Wakefielders What didnt hit ground hard bounced blew back face some started going up refirerl engine dropped model onto takeoff board laid nicest thermal could hope Somehow managed pull off fraud three times row other maxerEdward Eliot holds national record event bombed fourth flight mere 105 figured cinched Id have try real hard get flight bad 105 inquired loud voice what would take beat national record pondered thoughtfully whether could get maxes before end contest proceeded put model large downer mere 55 seconds comforted neat model looked landing its wheels dont have try very hard get flight bad 105 Payload Early meet Will Nakashima mentioned about run out material cartoons end Day Three enough last decade No Non-Cents Strikes Again Chalk up another four AMA national records No Non-Cents See construction article June issue Mike Van Gorder age 11 put together flight 931 under Category II ceiling height Second NIMAS International Record Trials West Baden Indiana June As 90 Model Aviation Stahl design __OGA 10% FOR PACKING AND POSTAGE VA RESIDENTS ADD 4% TAX 24 I/5 WINOSPAId 5 Gordon Fisher built VTO design called Union Jack Frost Coupe dHiver model plans published MAN Dave Linstrum pic writing record has homolo gated Inasmuch model qualifies Novice Pennyplane since NP subset thats New Math talk sonny Pen nyplane flight qualifies both Junior Novice PP Pennyplane records quite some flying Novice PP event least record going tough beat especially good consid ering Mike started building door models January Mikes dad Walter reports model especially easy fly adjustment required minor adjust ment wing incidence angle Another pair records chalked up July 2 Marnie Meuser ten-yearold granddaughter using straight-tip product review product review product review RFM Meter Designed RS Systems ser jous RC enthusiasts interested preventive maintenance assure high degree relia bility meter clips transmitter tenna about half way between case top full extended antenna Cali brated use 72-75 MHz band pro vides measure RF voltage actually present point antenna Chang es reading indicate actual changes energy Changes meter reading reflect changes power outputwhich could battery charge condition improper tuning damaged components temperature-sensitive components etc requiring checking qualified service center meter requires no batteries RS Systems 5301 Holland Dr Beltsville MD 20705 product review product review product review Because know model building cant done type glue Thats Hobbypoxy makes three Formula 1 general purpose epoxy glue gives 15 minutes work ing time cures hard hour Thats just about right construction instsllation components need shifted around bit perfect alignment before glue sets Formula 2 has much longer working time 45 minutes makes per fect large-area laminating planking wings can put glue ribs position skins pin down before glue hardens Formula 2 also recommended fiberglass layup fuel-proofing engine compartments surfacing resin bare balsa* Formula 4 superior version popular five minute epoxies Great quick construction quick repairs perfect joining parts impossible clamp pin st hand-hold few short minutes its done Hobbypoxy epoxy glues completely fuel proof permanently flexible Joints will never crack shatter way some other epoxies contrary popular myth Hobbypoxy epoxy glues will adhere cure properly prepared fiberglass So whatever youve got glue glue Hobby poxy original epoxy models *For complete description use Formula 2 finishing send free Poxy Painting Pointers brochure Wr te word glue request 20 Pine Street Rockaway NJ 07866 flflflIA flfl sion Pettit Paint Co Inc version shown alternative plans Category III record time 733 set 80 X 40-ft Wind Tun nel Sunnyvale Bruce Armstrong established previous records year earlier Attempts better Pennyplane score using 14 prop success ful severe warp developed time ran out So makes six official national rec ords No Non-Cents five stand time writing Id certainly like hear have built No Non-Cents-your successes difficulties such feedback can improve breed F/F Supplies Source looking October1977 91 3 epoxy glues Dave Haitman Blue Ridge Models Square Eagle P30 plasticprop rubber design dad Phil Hartman Pic Dave Linstrum KITS S SSORIES Daly 4CE 17 SPAN STOCK NO PP15 KIT $425 BROWN CO-2 ENGINES ENGINES ARE IN STOCK NEW CHAEGEE AND S SIZES OP TANKS BROWN ENGINES MUST RE ORDIRED DIRECT FROM PECK-POLYMERS 4 WALNUT SCALE KITS BABY ACE$423 PEANUT SCALE KITS PIPSE J3 CUR$329 FIETBEPOL $329 MILES $329 TURBULENT $329 MUSTANG$349 ZERO$349 COUGAR $349 ANDRSASO9I.$349 GIPSY MOTH.-$349 GANAGOBIE. $349 SPORT MODEL KITS ONE NITS SR$473 ONE NITE 16$349 STRINGLESS WONDER- POcK ROG$139 KITS 0 PLANS 0 ACCESSORIES REAL JAPANESE TISSUE-PROPS COMPLETE CATALOG 5O MANY HARD TO FIND ITEMS D~D*Iuiup P 0 BOX 2498 -AMA LA MESA CALIF 92O4 FNONE 17141 4694673 1 442-4636 one-stop mail-order source try Creative Native 14548 Seventh St Vic torville CA 92392 Twenty-five cents will get eight-page price list Included such things nitrate dope Floquil paint balsa spruce 1/32-square upward Peck Sig Sterling Tern Aero Micro-X kits tissue Wylam plans Williams Bros parts chemicals sorts goodies Country Boy Kit Jim Clems Country Boy featured March issue now avail able kit form dealer doesnt have order direct Clemcraft PO Box 524 Sand Springs OK 74063 FAI Supply Attention Modelers Wives Saturday bought new garden hose highest quality new power lawn mower Sunday accidentally cut new hose half new lawn mower Now moral story modelers wives should require husbands take time away modeling order water garden mow lawn such.. Bob Meuser 4200 Gregory St Oak land CA 94619 Fokker D-VII I/Owens continued page 20 planking nose block pre-shaped added Complete stub wing plank ing top epoxy coating axle slots placing shock mount screws whole working gear simple con struct presents very scale-like action ground maneuvers landing cabane struts bent using small propane torch careful heat local bend area dull cherry-red color maintain spring temper much wire possible Dont heat around dope alcohol fumes might happen around balsa scraps work bench main tained location bending marking wire blackboard chalk can take heat disappearing know exactly bend during heating-bending process Al ways begin bending project center piece work outward allowing two inches extra ends errors making final bends easier form home-made spade bolts fabri cated threaded steel rod ends ing heated cherry red hammered flat Dont hammer piece unless part remains hot cracking may oc cur 1/16 hole drilled edges chamfered prevent wear plastic devices Note spade part bent angle threaded part Now heat part up cherry red again slowly let cool gives tempering effect part J bolts made similar fash ion again being careful avoid cold working bends will find bending around nail scrap piano wire held vise will make process quite simple Dont forget soft temper pieces 12 aluminum clips fabricated initially bending aluminum around prebent piano wire part fi nally held Next wire U-shaped aluminum squeezed vise together tighten U final bend retain wire made putting tails U vise just above bottom wire vise now closed tails holding wire clip place pressing downward suitable mounting hole drilled edges trimmed complete clip As fair amount strut length cover balsa fairings word about order began selecting enough x medium-hard hard balsa stock job shaped final oval cross section planing sanding Finally set up Dremel tool drill press guide clamped set rout out U groove down center proper depth engine tank installation require much description other say have run engine pressure have experienced un usual feed problems will say fill tank carry aircraft starting line before starting engine will -flood engine time Carry craft fuel line disconnected visible tank quickly detach able rubberband mount feature has well worth addition Since DVIII has plenty cowl room dont recommend behind-the-firewall tank stallation up front location keeps things nice clean inside radio compartment aids balancing process cowl mounted homemade aluminum clips held place self-thread ing screws Washers epoxied cowl avoid tightening screws di rectly against softer cowl materials top engine mount drilled self-threading screw used considerably stiffen whole works may notice heavy wire soldered glow plug terminal led out small hole cowl side makes clipping glow plug leads snap did have drill hole Austin Craft plug wrench straight through allowing wire run plug inserted removed servo installation certainly does lack space plan shows Yo-in plywood mounts servos Dont skimp servo mounting battery its foam covering mounted plywood cross piece rubberbands far forward possible radio three servos used balance craft after cover ing installation will vary shown get internal work completed before covering goes Notice have used rubberband put light tension internal antenna makes radio installation removal easy keeps antenna clean avoids kinks prevents overstressing wire surface throws set up follows ailerons 1 up elevator 2 up 2 down rudder has 2 right left deflections throws may seem large result positive control during taxiing slow flight routines large enough require constant attention during higher speed flight particular color scheme flown Jagdstaffel 6 late 1918 tail col ors alternating black white Super Monokote strips crosses white Monokote overlaid black overlaying generally making botch try method Using very point iron carefully lightly tack white down done along center line outward middle cross center firmly tacked work outward four intersections sweeping motion might add lots patience required black Mon okote overlaid using same outward semi-circular motion iron Tack down well wont get away Also never press down hard lead ing edge iron first passes Press hard trailing edge 92 Model Aviation FL WITI aUGUR Ga c93 peWUR 0 WaLNUT SCALE ASK FOR OUR KITS AND ACCESSORIES AT YOUR LOCAL DEALER IF NOT AVAILABLE AT YOUR DEALER ORDER DIRECT ADD ROE POSTAGE
Edition: Model Aviation - 1977/10
Page Numbers: 36, 37, 90, 91, 92
Duralion 0 Bob Meuser Bk~AB AK D I/ 7/ / CIRCULAR ARCS arc circle smoothest way get surprising found frequently model aircraft designs door airfoils portions fuselage profiles wing planforms shallow arcsarcs large radiusmay inconvenient draw using beam compass sim ple way lay out shallow arc compass Suppose wish make template indoor wing ribs having chord 7 er no use drawing paper first scribe directly 025 aluminum template stock gave up plywood templates years ago Refer sketch Snip off piece stock 7 long inch wide Divide chord eight equal spaces B end scribe line ightedge C Connect quarter points indi cated D connect one-eighth points indicated snip along straight lines knock off corners file ready slice ribs prefer bit snipping bit less filing snip off corners between 1/16 points Simply eyeball cuts starting ending midway tween /s points Sketch E shows results Kjk IjJ Now suppose wish fair line tween some point along top edge fuselage lower point nose easy think half indoor rib template Sketch F shows works lied arent circular arcs theyre parabolas far differ ent parabolic development shown early Zaic Yearbooks shal low curves however circular arc parabola virtually identical indoor rib template used example difference about 001 Check Wind Check mentioned wind checks Balsa article June 1976 issue perhaps didnt emphasize enough account talk Sal Taibi appeared Flighiplug called attention Wind checks appear fine lines running across grain caused excessive compressive stress dowr-wind side tree probably also beating tree takes during felling transportation lumber ing severe cases examined under microscope grain wood will appear folded back itself 5 shape Although wood has tech nically failed still quite strong compression tension bending forget According Sal wind checks account lot broken models can see takes patience practice Flex wood snaps pre maturely probably result wind check Now have ruined stick balsa own subjecting Meu ser Test what you spot wind checkeither eye flex testzap drop cyano acrylate adhesive Jet Eastman 910 Zip Grip Hot Stuff whatever cases will seep damaged region harden salvage otherwise OK hunk balsa Wind checks prevalent lowdensity balsa hard balsa Non-Report USFF Champs Clarence Haughts report USFFC appeared ModA v last month Ill just report few personal observations felt pretty good non-reporting felt pretty good chasing own model off boonies instead someone elses felt pretty good seeing someones C model caught phone lines feeling compelled dash madly back camp get camera felt pretty good able totally ignore what going some event chose get intensely engrossed some event merely because intensely engrossing because commitment cover event whether gave two cents Non-reporting could become habit forming Novice Pennyplane event presented few surprises first time Novice Pennyplane has flown USFFC previously flew Pennyplane 36 Model Aviation Carl Linstrum set new AMA records Payload Clipper Cargo simple Jedeisky Pay Later published MAN plan Strangely Pennyplane very popu lar what little popularity bad seemed waning event danger being clobbered So Novice Pen nyplane substituted Surprisinglyto leastparticipation up dramat ically general level performance astounding Right durations exceeded made previously less restricted Pennyplane-class models competition keen four five models clearly potential win winning time close AMA National record despite low ceiling about 20 feet arrays fluorescent lamps compared 35 ft allowed Category Bill Vanderbeek novel approach although Im sure planned way After hitting light diving model would come down almost floor before started climbing again So used 20-ft ceiling three four times flight contrast model recovered quickly survive about 20 encounters lights flight ultimately got hung up Hoffman won both Novice Pennyplane Easy-B surprising won Easy B 76 Nats took second Pen nyplane Easy B 1976 USFFC wasnt such nice guy could learn hate him outstanding performances Novice Pennyplane led Clarence Mather re mark severe restrictions make line original purpose Pennyplane event regular Pennyplane event might well dropped motherly instincts inhibit agreeing totally last part Ill have admit has good point Hoffmans Easy B prop must difficult-to-build prop ever concocted mind man beast Basically built-up prop such would build microfilm-covered model cover ing first blush might appear condenser paper actually paper-thin sheet balsa rules specify propeller blades shall constructed en tirely wood tempt rules-mongers keeping things simple Rules never foolproof nothing As Edward Teller used say about safety aspects nuclear reactors fool al ways greater proof Having out Gas some ten years thought Id give Class D try Im working up gradually tried 020 Payload event year double dis placement year mere five years Ill up Class D covered Payload model built 1970 managed get tuned up pretty well also learned start Tee Dee 02 needle set fast running Flood heck Out So trudged out Payload area spread out prayer rug started engine first flip quickly shut down fore chance die itself Continued page 90 October1977 37 Veteran FAI flier Tom McLaughlan uses folding prop 1977 Streamliner 62 years young Tom represented US free/flight World Championships Denmark Linstrum pic Duane Osborn Jr Class B Pearl Duster hybrid Starduster Pearl series like see sun through wings exposed frame youll like Mylar Linstrum picl Rebel flag decorated C job readied last 101 WL Johnson Dig snip enlarged trom FAI machine Bob Sifleet design cold note garb Linstrum picl see local hobby dealer t$ 4 RUBBER & CO2 WINNER AT THE 5OthNATS 7 4101 22 I/2 WINGSPAN 5695 about two ounces extension youre looking some nose weight might try standard Supertigre muffler S29B ST 46 weighs about three oz sells $1295 Also newer type OS Max mufflers come engines good nose weight small Tatone will help front-end stability after some cutting hogging fit either Max Fox some areas Enya M-200 muffler ST 46 may still available fairly light item costing about $800 Bill Werwage used some time USA-I Murphy Maxi-muffler $1095 can used desired rather large has asbestos-type covering expands higher engine rpm As best writer can find MAC Silenceair mufflers no longer being imported although may hiding some hobby shops around country may also able find old-style Max mufflers still popular East coast writer has using Merco muffler since 1971 difficult obtain will bolt right up ST 46 experimenting HP-40 engine have Dan Shafer Bill Eybers Bill Werwage could use straight HP muffler rather big heavy could Dan Shafer has cut almost A0yeors ago— p --N *108 Earl Stahls famous 28 WINGSPAN S62 Send free brochure FLYLINE MODELS 2820 DORR AVE FAIRFAX VA 22030 off HP muffler leaving some metal around extension bolt DuBro fins what left Takes little genuity works well Dan Bill Eybers converted old-style Max muffler exhaust extension bolted HP engine Bob Paul muffler has used both Bill Werwage Bob Gieseke Fox Supertigre HP 40 ever Bob has series misfortunes past Spring including ruined apart ment burst water pipe probably will get production until late Fall does get back gear lit tle muffler good Two other examples fine little home made mufflers chrome-plated ones made up Chuck DeLano Indianapolis Dennis Duvall currently using latest semi-scale MIG Bill Scott Cincinnati has created unique little muffler-extension combina tion very effective opened up drilling out holes bottom aluminum extension what its worth writers opin ion new Gene Martine muffler looks like best lot both perform ance delivery machine work beautiful muffler works un sightly Gene aware supply demand problems have hurt K COMPLETE THIS FORM AND ATrACH MAILING LABEL FROM RECENT ISSUE move please let us know advancesix weeks re quired change address Attach current MA mailing label check appropriate box mail Subscription Dept. Model Aviation 815 Fifteenth St. NW. Washington DC. 20005 check appropriate boxenclose payment 0 NEW SUBSCRIPTION 0 CHANGE OF ADDRESS Non-AMA subscription rates $1200 12 months Canada United States possession elsewhere $1400 NAME ADDRESS CITY/STATE _____________________________________________ ZIP _______________ MODEL AVIATION 815 FIFTEENTH ST. NW. WASHINGTON DC 20005 some other good products Slim Line muffler will also catch simple small available want Max 35 engine re worked let writer suggest Tom Lay regarding workmanship service communication Bob Whitely Ron Mer rill Vincent Judd Val Britton re ported turn-around service has two three weekswhich bad Tom will modify piston head ven turi needle valve hand-lap piston sleeve precision assemble engine Cost $1000 plus postage plus new parts required Tom also has available T & L custom 40 stunt engine reworked Max 35 displacement 4000037 power similar Supertigre 46 engine will drop right mount holes Max 35 will make overweight 35-size ship flyable information prices above write Tom Lay T & L Model Specialties P0 Box 6052 Torrance CA 90504 information stunt PAMPA write author Wynn Paul 1640 Maywick Dr Lexing ton KY 40504 FF Duration/Meuser continued page 37 still pretending know what doing threw cat-tail seeds possible di rection seen big-time Wakefielders What didnt hit ground hard bounced blew back face some started going up refirerl engine dropped model onto takeoff board laid nicest thermal could hope Somehow managed pull off fraud three times row other maxerEdward Eliot holds national record event bombed fourth flight mere 105 figured cinched Id have try real hard get flight bad 105 inquired loud voice what would take beat national record pondered thoughtfully whether could get maxes before end contest proceeded put model large downer mere 55 seconds comforted neat model looked landing its wheels dont have try very hard get flight bad 105 Payload Early meet Will Nakashima mentioned about run out material cartoons end Day Three enough last decade No Non-Cents Strikes Again Chalk up another four AMA national records No Non-Cents See construction article June issue Mike Van Gorder age 11 put together flight 931 under Category II ceiling height Second NIMAS International Record Trials West Baden Indiana June As 90 Model Aviation Stahl design __OGA 10% FOR PACKING AND POSTAGE VA RESIDENTS ADD 4% TAX 24 I/5 WINOSPAId 5 Gordon Fisher built VTO design called Union Jack Frost Coupe dHiver model plans published MAN Dave Linstrum pic writing record has homolo gated Inasmuch model qualifies Novice Pennyplane since NP subset thats New Math talk sonny Pen nyplane flight qualifies both Junior Novice PP Pennyplane records quite some flying Novice PP event least record going tough beat especially good consid ering Mike started building door models January Mikes dad Walter reports model especially easy fly adjustment required minor adjust ment wing incidence angle Another pair records chalked up July 2 Marnie Meuser ten-yearold granddaughter using straight-tip product review product review product review RFM Meter Designed RS Systems ser jous RC enthusiasts interested preventive maintenance assure high degree relia bility meter clips transmitter tenna about half way between case top full extended antenna Cali brated use 72-75 MHz band pro vides measure RF voltage actually present point antenna Chang es reading indicate actual changes energy Changes meter reading reflect changes power outputwhich could battery charge condition improper tuning damaged components temperature-sensitive components etc requiring checking qualified service center meter requires no batteries RS Systems 5301 Holland Dr Beltsville MD 20705 product review product review product review Because know model building cant done type glue Thats Hobbypoxy makes three Formula 1 general purpose epoxy glue gives 15 minutes work ing time cures hard hour Thats just about right construction instsllation components need shifted around bit perfect alignment before glue sets Formula 2 has much longer working time 45 minutes makes per fect large-area laminating planking wings can put glue ribs position skins pin down before glue hardens Formula 2 also recommended fiberglass layup fuel-proofing engine compartments surfacing resin bare balsa* Formula 4 superior version popular five minute epoxies Great quick construction quick repairs perfect joining parts impossible clamp pin st hand-hold few short minutes its done Hobbypoxy epoxy glues completely fuel proof permanently flexible Joints will never crack shatter way some other epoxies contrary popular myth Hobbypoxy epoxy glues will adhere cure properly prepared fiberglass So whatever youve got glue glue Hobby poxy original epoxy models *For complete description use Formula 2 finishing send free Poxy Painting Pointers brochure Wr te word glue request 20 Pine Street Rockaway NJ 07866 flflflIA flfl sion Pettit Paint Co Inc version shown alternative plans Category III record time 733 set 80 X 40-ft Wind Tun nel Sunnyvale Bruce Armstrong established previous records year earlier Attempts better Pennyplane score using 14 prop success ful severe warp developed time ran out So makes six official national rec ords No Non-Cents five stand time writing Id certainly like hear have built No Non-Cents-your successes difficulties such feedback can improve breed F/F Supplies Source looking October1977 91 3 epoxy glues Dave Haitman Blue Ridge Models Square Eagle P30 plasticprop rubber design dad Phil Hartman Pic Dave Linstrum KITS S SSORIES Daly 4CE 17 SPAN STOCK NO PP15 KIT $425 BROWN CO-2 ENGINES ENGINES ARE IN STOCK NEW CHAEGEE AND S SIZES OP TANKS BROWN ENGINES MUST RE ORDIRED DIRECT FROM PECK-POLYMERS 4 WALNUT SCALE KITS BABY ACE$423 PEANUT SCALE KITS PIPSE J3 CUR$329 FIETBEPOL $329 MILES $329 TURBULENT $329 MUSTANG$349 ZERO$349 COUGAR $349 ANDRSASO9I.$349 GIPSY MOTH.-$349 GANAGOBIE. $349 SPORT MODEL KITS ONE NITS SR$473 ONE NITE 16$349 STRINGLESS WONDER- POcK ROG$139 KITS 0 PLANS 0 ACCESSORIES REAL JAPANESE TISSUE-PROPS COMPLETE CATALOG 5O MANY HARD TO FIND ITEMS D~D*Iuiup P 0 BOX 2498 -AMA LA MESA CALIF 92O4 FNONE 17141 4694673 1 442-4636 one-stop mail-order source try Creative Native 14548 Seventh St Vic torville CA 92392 Twenty-five cents will get eight-page price list Included such things nitrate dope Floquil paint balsa spruce 1/32-square upward Peck Sig Sterling Tern Aero Micro-X kits tissue Wylam plans Williams Bros parts chemicals sorts goodies Country Boy Kit Jim Clems Country Boy featured March issue now avail able kit form dealer doesnt have order direct Clemcraft PO Box 524 Sand Springs OK 74063 FAI Supply Attention Modelers Wives Saturday bought new garden hose highest quality new power lawn mower Sunday accidentally cut new hose half new lawn mower Now moral story modelers wives should require husbands take time away modeling order water garden mow lawn such.. Bob Meuser 4200 Gregory St Oak land CA 94619 Fokker D-VII I/Owens continued page 20 planking nose block pre-shaped added Complete stub wing plank ing top epoxy coating axle slots placing shock mount screws whole working gear simple con struct presents very scale-like action ground maneuvers landing cabane struts bent using small propane torch careful heat local bend area dull cherry-red color maintain spring temper much wire possible Dont heat around dope alcohol fumes might happen around balsa scraps work bench main tained location bending marking wire blackboard chalk can take heat disappearing know exactly bend during heating-bending process Al ways begin bending project center piece work outward allowing two inches extra ends errors making final bends easier form home-made spade bolts fabri cated threaded steel rod ends ing heated cherry red hammered flat Dont hammer piece unless part remains hot cracking may oc cur 1/16 hole drilled edges chamfered prevent wear plastic devices Note spade part bent angle threaded part Now heat part up cherry red again slowly let cool gives tempering effect part J bolts made similar fash ion again being careful avoid cold working bends will find bending around nail scrap piano wire held vise will make process quite simple Dont forget soft temper pieces 12 aluminum clips fabricated initially bending aluminum around prebent piano wire part fi nally held Next wire U-shaped aluminum squeezed vise together tighten U final bend retain wire made putting tails U vise just above bottom wire vise now closed tails holding wire clip place pressing downward suitable mounting hole drilled edges trimmed complete clip As fair amount strut length cover balsa fairings word about order began selecting enough x medium-hard hard balsa stock job shaped final oval cross section planing sanding Finally set up Dremel tool drill press guide clamped set rout out U groove down center proper depth engine tank installation require much description other say have run engine pressure have experienced un usual feed problems will say fill tank carry aircraft starting line before starting engine will -flood engine time Carry craft fuel line disconnected visible tank quickly detach able rubberband mount feature has well worth addition Since DVIII has plenty cowl room dont recommend behind-the-firewall tank stallation up front location keeps things nice clean inside radio compartment aids balancing process cowl mounted homemade aluminum clips held place self-thread ing screws Washers epoxied cowl avoid tightening screws di rectly against softer cowl materials top engine mount drilled self-threading screw used considerably stiffen whole works may notice heavy wire soldered glow plug terminal led out small hole cowl side makes clipping glow plug leads snap did have drill hole Austin Craft plug wrench straight through allowing wire run plug inserted removed servo installation certainly does lack space plan shows Yo-in plywood mounts servos Dont skimp servo mounting battery its foam covering mounted plywood cross piece rubberbands far forward possible radio three servos used balance craft after cover ing installation will vary shown get internal work completed before covering goes Notice have used rubberband put light tension internal antenna makes radio installation removal easy keeps antenna clean avoids kinks prevents overstressing wire surface throws set up follows ailerons 1 up elevator 2 up 2 down rudder has 2 right left deflections throws may seem large result positive control during taxiing slow flight routines large enough require constant attention during higher speed flight particular color scheme flown Jagdstaffel 6 late 1918 tail col ors alternating black white Super Monokote strips crosses white Monokote overlaid black overlaying generally making botch try method Using very point iron carefully lightly tack white down done along center line outward middle cross center firmly tacked work outward four intersections sweeping motion might add lots patience required black Mon okote overlaid using same outward semi-circular motion iron Tack down well wont get away Also never press down hard lead ing edge iron first passes Press hard trailing edge 92 Model Aviation FL WITI aUGUR Ga c93 peWUR 0 WaLNUT SCALE ASK FOR OUR KITS AND ACCESSORIES AT YOUR LOCAL DEALER IF NOT AVAILABLE AT YOUR DEALER ORDER DIRECT ADD ROE POSTAGE
Edition: Model Aviation - 1977/10
Page Numbers: 36, 37, 90, 91, 92
Duralion 0 Bob Meuser Bk~AB AK D I/ 7/ / CIRCULAR ARCS arc circle smoothest way get surprising found frequently model aircraft designs door airfoils portions fuselage profiles wing planforms shallow arcsarcs large radiusmay inconvenient draw using beam compass sim ple way lay out shallow arc compass Suppose wish make template indoor wing ribs having chord 7 er no use drawing paper first scribe directly 025 aluminum template stock gave up plywood templates years ago Refer sketch Snip off piece stock 7 long inch wide Divide chord eight equal spaces B end scribe line ightedge C Connect quarter points indi cated D connect one-eighth points indicated snip along straight lines knock off corners file ready slice ribs prefer bit snipping bit less filing snip off corners between 1/16 points Simply eyeball cuts starting ending midway tween /s points Sketch E shows results Kjk IjJ Now suppose wish fair line tween some point along top edge fuselage lower point nose easy think half indoor rib template Sketch F shows works lied arent circular arcs theyre parabolas far differ ent parabolic development shown early Zaic Yearbooks shal low curves however circular arc parabola virtually identical indoor rib template used example difference about 001 Check Wind Check mentioned wind checks Balsa article June 1976 issue perhaps didnt emphasize enough account talk Sal Taibi appeared Flighiplug called attention Wind checks appear fine lines running across grain caused excessive compressive stress dowr-wind side tree probably also beating tree takes during felling transportation lumber ing severe cases examined under microscope grain wood will appear folded back itself 5 shape Although wood has tech nically failed still quite strong compression tension bending forget According Sal wind checks account lot broken models can see takes patience practice Flex wood snaps pre maturely probably result wind check Now have ruined stick balsa own subjecting Meu ser Test what you spot wind checkeither eye flex testzap drop cyano acrylate adhesive Jet Eastman 910 Zip Grip Hot Stuff whatever cases will seep damaged region harden salvage otherwise OK hunk balsa Wind checks prevalent lowdensity balsa hard balsa Non-Report USFF Champs Clarence Haughts report USFFC appeared ModA v last month Ill just report few personal observations felt pretty good non-reporting felt pretty good chasing own model off boonies instead someone elses felt pretty good seeing someones C model caught phone lines feeling compelled dash madly back camp get camera felt pretty good able totally ignore what going some event chose get intensely engrossed some event merely because intensely engrossing because commitment cover event whether gave two cents Non-reporting could become habit forming Novice Pennyplane event presented few surprises first time Novice Pennyplane has flown USFFC previously flew Pennyplane 36 Model Aviation Carl Linstrum set new AMA records Payload Clipper Cargo simple Jedeisky Pay Later published MAN plan Strangely Pennyplane very popu lar what little popularity bad seemed waning event danger being clobbered So Novice Pen nyplane substituted Surprisinglyto leastparticipation up dramat ically general level performance astounding Right durations exceeded made previously less restricted Pennyplane-class models competition keen four five models clearly potential win winning time close AMA National record despite low ceiling about 20 feet arrays fluorescent lamps compared 35 ft allowed Category Bill Vanderbeek novel approach although Im sure planned way After hitting light diving model would come down almost floor before started climbing again So used 20-ft ceiling three four times flight contrast model recovered quickly survive about 20 encounters lights flight ultimately got hung up Hoffman won both Novice Pennyplane Easy-B surprising won Easy B 76 Nats took second Pen nyplane Easy B 1976 USFFC wasnt such nice guy could learn hate him outstanding performances Novice Pennyplane led Clarence Mather re mark severe restrictions make line original purpose Pennyplane event regular Pennyplane event might well dropped motherly instincts inhibit agreeing totally last part Ill have admit has good point Hoffmans Easy B prop must difficult-to-build prop ever concocted mind man beast Basically built-up prop such would build microfilm-covered model cover ing first blush might appear condenser paper actually paper-thin sheet balsa rules specify propeller blades shall constructed en tirely wood tempt rules-mongers keeping things simple Rules never foolproof nothing As Edward Teller used say about safety aspects nuclear reactors fool al ways greater proof Having out Gas some ten years thought Id give Class D try Im working up gradually tried 020 Payload event year double dis placement year mere five years Ill up Class D covered Payload model built 1970 managed get tuned up pretty well also learned start Tee Dee 02 needle set fast running Flood heck Out So trudged out Payload area spread out prayer rug started engine first flip quickly shut down fore chance die itself Continued page 90 October1977 37 Veteran FAI flier Tom McLaughlan uses folding prop 1977 Streamliner 62 years young Tom represented US free/flight World Championships Denmark Linstrum pic Duane Osborn Jr Class B Pearl Duster hybrid Starduster Pearl series like see sun through wings exposed frame youll like Mylar Linstrum picl Rebel flag decorated C job readied last 101 WL Johnson Dig snip enlarged trom FAI machine Bob Sifleet design cold note garb Linstrum picl see local hobby dealer t$ 4 RUBBER & CO2 WINNER AT THE 5OthNATS 7 4101 22 I/2 WINGSPAN 5695 about two ounces extension youre looking some nose weight might try standard Supertigre muffler S29B ST 46 weighs about three oz sells $1295 Also newer type OS Max mufflers come engines good nose weight small Tatone will help front-end stability after some cutting hogging fit either Max Fox some areas Enya M-200 muffler ST 46 may still available fairly light item costing about $800 Bill Werwage used some time USA-I Murphy Maxi-muffler $1095 can used desired rather large has asbestos-type covering expands higher engine rpm As best writer can find MAC Silenceair mufflers no longer being imported although may hiding some hobby shops around country may also able find old-style Max mufflers still popular East coast writer has using Merco muffler since 1971 difficult obtain will bolt right up ST 46 experimenting HP-40 engine have Dan Shafer Bill Eybers Bill Werwage could use straight HP muffler rather big heavy could Dan Shafer has cut almost A0yeors ago— p --N *108 Earl Stahls famous 28 WINGSPAN S62 Send free brochure FLYLINE MODELS 2820 DORR AVE FAIRFAX VA 22030 off HP muffler leaving some metal around extension bolt DuBro fins what left Takes little genuity works well Dan Bill Eybers converted old-style Max muffler exhaust extension bolted HP engine Bob Paul muffler has used both Bill Werwage Bob Gieseke Fox Supertigre HP 40 ever Bob has series misfortunes past Spring including ruined apart ment burst water pipe probably will get production until late Fall does get back gear lit tle muffler good Two other examples fine little home made mufflers chrome-plated ones made up Chuck DeLano Indianapolis Dennis Duvall currently using latest semi-scale MIG Bill Scott Cincinnati has created unique little muffler-extension combina tion very effective opened up drilling out holes bottom aluminum extension what its worth writers opin ion new Gene Martine muffler looks like best lot both perform ance delivery machine work beautiful muffler works un sightly Gene aware supply demand problems have hurt K COMPLETE THIS FORM AND ATrACH MAILING LABEL FROM RECENT ISSUE move please let us know advancesix weeks re quired change address Attach current MA mailing label check appropriate box mail Subscription Dept. Model Aviation 815 Fifteenth St. NW. Washington DC. 20005 check appropriate boxenclose payment 0 NEW SUBSCRIPTION 0 CHANGE OF ADDRESS Non-AMA subscription rates $1200 12 months Canada United States possession elsewhere $1400 NAME ADDRESS CITY/STATE _____________________________________________ ZIP _______________ MODEL AVIATION 815 FIFTEENTH ST. NW. WASHINGTON DC 20005 some other good products Slim Line muffler will also catch simple small available want Max 35 engine re worked let writer suggest Tom Lay regarding workmanship service communication Bob Whitely Ron Mer rill Vincent Judd Val Britton re ported turn-around service has two three weekswhich bad Tom will modify piston head ven turi needle valve hand-lap piston sleeve precision assemble engine Cost $1000 plus postage plus new parts required Tom also has available T & L custom 40 stunt engine reworked Max 35 displacement 4000037 power similar Supertigre 46 engine will drop right mount holes Max 35 will make overweight 35-size ship flyable information prices above write Tom Lay T & L Model Specialties P0 Box 6052 Torrance CA 90504 information stunt PAMPA write author Wynn Paul 1640 Maywick Dr Lexing ton KY 40504 FF Duration/Meuser continued page 37 still pretending know what doing threw cat-tail seeds possible di rection seen big-time Wakefielders What didnt hit ground hard bounced blew back face some started going up refirerl engine dropped model onto takeoff board laid nicest thermal could hope Somehow managed pull off fraud three times row other maxerEdward Eliot holds national record event bombed fourth flight mere 105 figured cinched Id have try real hard get flight bad 105 inquired loud voice what would take beat national record pondered thoughtfully whether could get maxes before end contest proceeded put model large downer mere 55 seconds comforted neat model looked landing its wheels dont have try very hard get flight bad 105 Payload Early meet Will Nakashima mentioned about run out material cartoons end Day Three enough last decade No Non-Cents Strikes Again Chalk up another four AMA national records No Non-Cents See construction article June issue Mike Van Gorder age 11 put together flight 931 under Category II ceiling height Second NIMAS International Record Trials West Baden Indiana June As 90 Model Aviation Stahl design __OGA 10% FOR PACKING AND POSTAGE VA RESIDENTS ADD 4% TAX 24 I/5 WINOSPAId 5 Gordon Fisher built VTO design called Union Jack Frost Coupe dHiver model plans published MAN Dave Linstrum pic writing record has homolo gated Inasmuch model qualifies Novice Pennyplane since NP subset thats New Math talk sonny Pen nyplane flight qualifies both Junior Novice PP Pennyplane records quite some flying Novice PP event least record going tough beat especially good consid ering Mike started building door models January Mikes dad Walter reports model especially easy fly adjustment required minor adjust ment wing incidence angle Another pair records chalked up July 2 Marnie Meuser ten-yearold granddaughter using straight-tip product review product review product review RFM Meter Designed RS Systems ser jous RC enthusiasts interested preventive maintenance assure high degree relia bility meter clips transmitter tenna about half way between case top full extended antenna Cali brated use 72-75 MHz band pro vides measure RF voltage actually present point antenna Chang es reading indicate actual changes energy Changes meter reading reflect changes power outputwhich could battery charge condition improper tuning damaged components temperature-sensitive components etc requiring checking qualified service center meter requires no batteries RS Systems 5301 Holland Dr Beltsville MD 20705 product review product review product review Because know model building cant done type glue Thats Hobbypoxy makes three Formula 1 general purpose epoxy glue gives 15 minutes work ing time cures hard hour Thats just about right construction instsllation components need shifted around bit perfect alignment before glue sets Formula 2 has much longer working time 45 minutes makes per fect large-area laminating planking wings can put glue ribs position skins pin down before glue hardens Formula 2 also recommended fiberglass layup fuel-proofing engine compartments surfacing resin bare balsa* Formula 4 superior version popular five minute epoxies Great quick construction quick repairs perfect joining parts impossible clamp pin st hand-hold few short minutes its done Hobbypoxy epoxy glues completely fuel proof permanently flexible Joints will never crack shatter way some other epoxies contrary popular myth Hobbypoxy epoxy glues will adhere cure properly prepared fiberglass So whatever youve got glue glue Hobby poxy original epoxy models *For complete description use Formula 2 finishing send free Poxy Painting Pointers brochure Wr te word glue request 20 Pine Street Rockaway NJ 07866 flflflIA flfl sion Pettit Paint Co Inc version shown alternative plans Category III record time 733 set 80 X 40-ft Wind Tun nel Sunnyvale Bruce Armstrong established previous records year earlier Attempts better Pennyplane score using 14 prop success ful severe warp developed time ran out So makes six official national rec ords No Non-Cents five stand time writing Id certainly like hear have built No Non-Cents-your successes difficulties such feedback can improve breed F/F Supplies Source looking October1977 91 3 epoxy glues Dave Haitman Blue Ridge Models Square Eagle P30 plasticprop rubber design dad Phil Hartman Pic Dave Linstrum KITS S SSORIES Daly 4CE 17 SPAN STOCK NO PP15 KIT $425 BROWN CO-2 ENGINES ENGINES ARE IN STOCK NEW CHAEGEE AND S SIZES OP TANKS BROWN ENGINES MUST RE ORDIRED DIRECT FROM PECK-POLYMERS 4 WALNUT SCALE KITS BABY ACE$423 PEANUT SCALE KITS PIPSE J3 CUR$329 FIETBEPOL $329 MILES $329 TURBULENT $329 MUSTANG$349 ZERO$349 COUGAR $349 ANDRSASO9I.$349 GIPSY MOTH.-$349 GANAGOBIE. $349 SPORT MODEL KITS ONE NITS SR$473 ONE NITE 16$349 STRINGLESS WONDER- POcK ROG$139 KITS 0 PLANS 0 ACCESSORIES REAL JAPANESE TISSUE-PROPS COMPLETE CATALOG 5O MANY HARD TO FIND ITEMS D~D*Iuiup P 0 BOX 2498 -AMA LA MESA CALIF 92O4 FNONE 17141 4694673 1 442-4636 one-stop mail-order source try Creative Native 14548 Seventh St Vic torville CA 92392 Twenty-five cents will get eight-page price list Included such things nitrate dope Floquil paint balsa spruce 1/32-square upward Peck Sig Sterling Tern Aero Micro-X kits tissue Wylam plans Williams Bros parts chemicals sorts goodies Country Boy Kit Jim Clems Country Boy featured March issue now avail able kit form dealer doesnt have order direct Clemcraft PO Box 524 Sand Springs OK 74063 FAI Supply Attention Modelers Wives Saturday bought new garden hose highest quality new power lawn mower Sunday accidentally cut new hose half new lawn mower Now moral story modelers wives should require husbands take time away modeling order water garden mow lawn such.. Bob Meuser 4200 Gregory St Oak land CA 94619 Fokker D-VII I/Owens continued page 20 planking nose block pre-shaped added Complete stub wing plank ing top epoxy coating axle slots placing shock mount screws whole working gear simple con struct presents very scale-like action ground maneuvers landing cabane struts bent using small propane torch careful heat local bend area dull cherry-red color maintain spring temper much wire possible Dont heat around dope alcohol fumes might happen around balsa scraps work bench main tained location bending marking wire blackboard chalk can take heat disappearing know exactly bend during heating-bending process Al ways begin bending project center piece work outward allowing two inches extra ends errors making final bends easier form home-made spade bolts fabri cated threaded steel rod ends ing heated cherry red hammered flat Dont hammer piece unless part remains hot cracking may oc cur 1/16 hole drilled edges chamfered prevent wear plastic devices Note spade part bent angle threaded part Now heat part up cherry red again slowly let cool gives tempering effect part J bolts made similar fash ion again being careful avoid cold working bends will find bending around nail scrap piano wire held vise will make process quite simple Dont forget soft temper pieces 12 aluminum clips fabricated initially bending aluminum around prebent piano wire part fi nally held Next wire U-shaped aluminum squeezed vise together tighten U final bend retain wire made putting tails U vise just above bottom wire vise now closed tails holding wire clip place pressing downward suitable mounting hole drilled edges trimmed complete clip As fair amount strut length cover balsa fairings word about order began selecting enough x medium-hard hard balsa stock job shaped final oval cross section planing sanding Finally set up Dremel tool drill press guide clamped set rout out U groove down center proper depth engine tank installation require much description other say have run engine pressure have experienced un usual feed problems will say fill tank carry aircraft starting line before starting engine will -flood engine time Carry craft fuel line disconnected visible tank quickly detach able rubberband mount feature has well worth addition Since DVIII has plenty cowl room dont recommend behind-the-firewall tank stallation up front location keeps things nice clean inside radio compartment aids balancing process cowl mounted homemade aluminum clips held place self-thread ing screws Washers epoxied cowl avoid tightening screws di rectly against softer cowl materials top engine mount drilled self-threading screw used considerably stiffen whole works may notice heavy wire soldered glow plug terminal led out small hole cowl side makes clipping glow plug leads snap did have drill hole Austin Craft plug wrench straight through allowing wire run plug inserted removed servo installation certainly does lack space plan shows Yo-in plywood mounts servos Dont skimp servo mounting battery its foam covering mounted plywood cross piece rubberbands far forward possible radio three servos used balance craft after cover ing installation will vary shown get internal work completed before covering goes Notice have used rubberband put light tension internal antenna makes radio installation removal easy keeps antenna clean avoids kinks prevents overstressing wire surface throws set up follows ailerons 1 up elevator 2 up 2 down rudder has 2 right left deflections throws may seem large result positive control during taxiing slow flight routines large enough require constant attention during higher speed flight particular color scheme flown Jagdstaffel 6 late 1918 tail col ors alternating black white Super Monokote strips crosses white Monokote overlaid black overlaying generally making botch try method Using very point iron carefully lightly tack white down done along center line outward middle cross center firmly tacked work outward four intersections sweeping motion might add lots patience required black Mon okote overlaid using same outward semi-circular motion iron Tack down well wont get away Also never press down hard lead ing edge iron first passes Press hard trailing edge 92 Model Aviation FL WITI aUGUR Ga c93 peWUR 0 WaLNUT SCALE ASK FOR OUR KITS AND ACCESSORIES AT YOUR LOCAL DEALER IF NOT AVAILABLE AT YOUR DEALER ORDER DIRECT ADD ROE POSTAGE
Edition: Model Aviation - 1977/10
Page Numbers: 36, 37, 90, 91, 92
Duralion 0 Bob Meuser Bk~AB AK D I/ 7/ / CIRCULAR ARCS arc circle smoothest way get surprising found frequently model aircraft designs door airfoils portions fuselage profiles wing planforms shallow arcsarcs large radiusmay inconvenient draw using beam compass sim ple way lay out shallow arc compass Suppose wish make template indoor wing ribs having chord 7 er no use drawing paper first scribe directly 025 aluminum template stock gave up plywood templates years ago Refer sketch Snip off piece stock 7 long inch wide Divide chord eight equal spaces B end scribe line ightedge C Connect quarter points indi cated D connect one-eighth points indicated snip along straight lines knock off corners file ready slice ribs prefer bit snipping bit less filing snip off corners between 1/16 points Simply eyeball cuts starting ending midway tween /s points Sketch E shows results Kjk IjJ Now suppose wish fair line tween some point along top edge fuselage lower point nose easy think half indoor rib template Sketch F shows works lied arent circular arcs theyre parabolas far differ ent parabolic development shown early Zaic Yearbooks shal low curves however circular arc parabola virtually identical indoor rib template used example difference about 001 Check Wind Check mentioned wind checks Balsa article June 1976 issue perhaps didnt emphasize enough account talk Sal Taibi appeared Flighiplug called attention Wind checks appear fine lines running across grain caused excessive compressive stress dowr-wind side tree probably also beating tree takes during felling transportation lumber ing severe cases examined under microscope grain wood will appear folded back itself 5 shape Although wood has tech nically failed still quite strong compression tension bending forget According Sal wind checks account lot broken models can see takes patience practice Flex wood snaps pre maturely probably result wind check Now have ruined stick balsa own subjecting Meu ser Test what you spot wind checkeither eye flex testzap drop cyano acrylate adhesive Jet Eastman 910 Zip Grip Hot Stuff whatever cases will seep damaged region harden salvage otherwise OK hunk balsa Wind checks prevalent lowdensity balsa hard balsa Non-Report USFF Champs Clarence Haughts report USFFC appeared ModA v last month Ill just report few personal observations felt pretty good non-reporting felt pretty good chasing own model off boonies instead someone elses felt pretty good seeing someones C model caught phone lines feeling compelled dash madly back camp get camera felt pretty good able totally ignore what going some event chose get intensely engrossed some event merely because intensely engrossing because commitment cover event whether gave two cents Non-reporting could become habit forming Novice Pennyplane event presented few surprises first time Novice Pennyplane has flown USFFC previously flew Pennyplane 36 Model Aviation Carl Linstrum set new AMA records Payload Clipper Cargo simple Jedeisky Pay Later published MAN plan Strangely Pennyplane very popu lar what little popularity bad seemed waning event danger being clobbered So Novice Pen nyplane substituted Surprisinglyto leastparticipation up dramat ically general level performance astounding Right durations exceeded made previously less restricted Pennyplane-class models competition keen four five models clearly potential win winning time close AMA National record despite low ceiling about 20 feet arrays fluorescent lamps compared 35 ft allowed Category Bill Vanderbeek novel approach although Im sure planned way After hitting light diving model would come down almost floor before started climbing again So used 20-ft ceiling three four times flight contrast model recovered quickly survive about 20 encounters lights flight ultimately got hung up Hoffman won both Novice Pennyplane Easy-B surprising won Easy B 76 Nats took second Pen nyplane Easy B 1976 USFFC wasnt such nice guy could learn hate him outstanding performances Novice Pennyplane led Clarence Mather re mark severe restrictions make line original purpose Pennyplane event regular Pennyplane event might well dropped motherly instincts inhibit agreeing totally last part Ill have admit has good point Hoffmans Easy B prop must difficult-to-build prop ever concocted mind man beast Basically built-up prop such would build microfilm-covered model cover ing first blush might appear condenser paper actually paper-thin sheet balsa rules specify propeller blades shall constructed en tirely wood tempt rules-mongers keeping things simple Rules never foolproof nothing As Edward Teller used say about safety aspects nuclear reactors fool al ways greater proof Having out Gas some ten years thought Id give Class D try Im working up gradually tried 020 Payload event year double dis placement year mere five years Ill up Class D covered Payload model built 1970 managed get tuned up pretty well also learned start Tee Dee 02 needle set fast running Flood heck Out So trudged out Payload area spread out prayer rug started engine first flip quickly shut down fore chance die itself Continued page 90 October1977 37 Veteran FAI flier Tom McLaughlan uses folding prop 1977 Streamliner 62 years young Tom represented US free/flight World Championships Denmark Linstrum pic Duane Osborn Jr Class B Pearl Duster hybrid Starduster Pearl series like see sun through wings exposed frame youll like Mylar Linstrum picl Rebel flag decorated C job readied last 101 WL Johnson Dig snip enlarged trom FAI machine Bob Sifleet design cold note garb Linstrum picl see local hobby dealer t$ 4 RUBBER & CO2 WINNER AT THE 5OthNATS 7 4101 22 I/2 WINGSPAN 5695 about two ounces extension youre looking some nose weight might try standard Supertigre muffler S29B ST 46 weighs about three oz sells $1295 Also newer type OS Max mufflers come engines good nose weight small Tatone will help front-end stability after some cutting hogging fit either Max Fox some areas Enya M-200 muffler ST 46 may still available fairly light item costing about $800 Bill Werwage used some time USA-I Murphy Maxi-muffler $1095 can used desired rather large has asbestos-type covering expands higher engine rpm As best writer can find MAC Silenceair mufflers no longer being imported although may hiding some hobby shops around country may also able find old-style Max mufflers still popular East coast writer has using Merco muffler since 1971 difficult obtain will bolt right up ST 46 experimenting HP-40 engine have Dan Shafer Bill Eybers Bill Werwage could use straight HP muffler rather big heavy could Dan Shafer has cut almost A0yeors ago— p --N *108 Earl Stahls famous 28 WINGSPAN S62 Send free brochure FLYLINE MODELS 2820 DORR AVE FAIRFAX VA 22030 off HP muffler leaving some metal around extension bolt DuBro fins what left Takes little genuity works well Dan Bill Eybers converted old-style Max muffler exhaust extension bolted HP engine Bob Paul muffler has used both Bill Werwage Bob Gieseke Fox Supertigre HP 40 ever Bob has series misfortunes past Spring including ruined apart ment burst water pipe probably will get production until late Fall does get back gear lit tle muffler good Two other examples fine little home made mufflers chrome-plated ones made up Chuck DeLano Indianapolis Dennis Duvall currently using latest semi-scale MIG Bill Scott Cincinnati has created unique little muffler-extension combina tion very effective opened up drilling out holes bottom aluminum extension what its worth writers opin ion new Gene Martine muffler looks like best lot both perform ance delivery machine work beautiful muffler works un sightly Gene aware supply demand problems have hurt K COMPLETE THIS FORM AND ATrACH MAILING LABEL FROM RECENT ISSUE move please let us know advancesix weeks re quired change address Attach current MA mailing label check appropriate box mail Subscription Dept. Model Aviation 815 Fifteenth St. NW. Washington DC. 20005 check appropriate boxenclose payment 0 NEW SUBSCRIPTION 0 CHANGE OF ADDRESS Non-AMA subscription rates $1200 12 months Canada United States possession elsewhere $1400 NAME ADDRESS CITY/STATE _____________________________________________ ZIP _______________ MODEL AVIATION 815 FIFTEENTH ST. NW. WASHINGTON DC 20005 some other good products Slim Line muffler will also catch simple small available want Max 35 engine re worked let writer suggest Tom Lay regarding workmanship service communication Bob Whitely Ron Mer rill Vincent Judd Val Britton re ported turn-around service has two three weekswhich bad Tom will modify piston head ven turi needle valve hand-lap piston sleeve precision assemble engine Cost $1000 plus postage plus new parts required Tom also has available T & L custom 40 stunt engine reworked Max 35 displacement 4000037 power similar Supertigre 46 engine will drop right mount holes Max 35 will make overweight 35-size ship flyable information prices above write Tom Lay T & L Model Specialties P0 Box 6052 Torrance CA 90504 information stunt PAMPA write author Wynn Paul 1640 Maywick Dr Lexing ton KY 40504 FF Duration/Meuser continued page 37 still pretending know what doing threw cat-tail seeds possible di rection seen big-time Wakefielders What didnt hit ground hard bounced blew back face some started going up refirerl engine dropped model onto takeoff board laid nicest thermal could hope Somehow managed pull off fraud three times row other maxerEdward Eliot holds national record event bombed fourth flight mere 105 figured cinched Id have try real hard get flight bad 105 inquired loud voice what would take beat national record pondered thoughtfully whether could get maxes before end contest proceeded put model large downer mere 55 seconds comforted neat model looked landing its wheels dont have try very hard get flight bad 105 Payload Early meet Will Nakashima mentioned about run out material cartoons end Day Three enough last decade No Non-Cents Strikes Again Chalk up another four AMA national records No Non-Cents See construction article June issue Mike Van Gorder age 11 put together flight 931 under Category II ceiling height Second NIMAS International Record Trials West Baden Indiana June As 90 Model Aviation Stahl design __OGA 10% FOR PACKING AND POSTAGE VA RESIDENTS ADD 4% TAX 24 I/5 WINOSPAId 5 Gordon Fisher built VTO design called Union Jack Frost Coupe dHiver model plans published MAN Dave Linstrum pic writing record has homolo gated Inasmuch model qualifies Novice Pennyplane since NP subset thats New Math talk sonny Pen nyplane flight qualifies both Junior Novice PP Pennyplane records quite some flying Novice PP event least record going tough beat especially good consid ering Mike started building door models January Mikes dad Walter reports model especially easy fly adjustment required minor adjust ment wing incidence angle Another pair records chalked up July 2 Marnie Meuser ten-yearold granddaughter using straight-tip product review product review product review RFM Meter Designed RS Systems ser jous RC enthusiasts interested preventive maintenance assure high degree relia bility meter clips transmitter tenna about half way between case top full extended antenna Cali brated use 72-75 MHz band pro vides measure RF voltage actually present point antenna Chang es reading indicate actual changes energy Changes meter reading reflect changes power outputwhich could battery charge condition improper tuning damaged components temperature-sensitive components etc requiring checking qualified service center meter requires no batteries RS Systems 5301 Holland Dr Beltsville MD 20705 product review product review product review Because know model building cant done type glue Thats Hobbypoxy makes three Formula 1 general purpose epoxy glue gives 15 minutes work ing time cures hard hour Thats just about right construction instsllation components need shifted around bit perfect alignment before glue sets Formula 2 has much longer working time 45 minutes makes per fect large-area laminating planking wings can put glue ribs position skins pin down before glue hardens Formula 2 also recommended fiberglass layup fuel-proofing engine compartments surfacing resin bare balsa* Formula 4 superior version popular five minute epoxies Great quick construction quick repairs perfect joining parts impossible clamp pin st hand-hold few short minutes its done Hobbypoxy epoxy glues completely fuel proof permanently flexible Joints will never crack shatter way some other epoxies contrary popular myth Hobbypoxy epoxy glues will adhere cure properly prepared fiberglass So whatever youve got glue glue Hobby poxy original epoxy models *For complete description use Formula 2 finishing send free Poxy Painting Pointers brochure Wr te word glue request 20 Pine Street Rockaway NJ 07866 flflflIA flfl sion Pettit Paint Co Inc version shown alternative plans Category III record time 733 set 80 X 40-ft Wind Tun nel Sunnyvale Bruce Armstrong established previous records year earlier Attempts better Pennyplane score using 14 prop success ful severe warp developed time ran out So makes six official national rec ords No Non-Cents five stand time writing Id certainly like hear have built No Non-Cents-your successes difficulties such feedback can improve breed F/F Supplies Source looking October1977 91 3 epoxy glues Dave Haitman Blue Ridge Models Square Eagle P30 plasticprop rubber design dad Phil Hartman Pic Dave Linstrum KITS S SSORIES Daly 4CE 17 SPAN STOCK NO PP15 KIT $425 BROWN CO-2 ENGINES ENGINES ARE IN STOCK NEW CHAEGEE AND S SIZES OP TANKS BROWN ENGINES MUST RE ORDIRED DIRECT FROM PECK-POLYMERS 4 WALNUT SCALE KITS BABY ACE$423 PEANUT SCALE KITS PIPSE J3 CUR$329 FIETBEPOL $329 MILES $329 TURBULENT $329 MUSTANG$349 ZERO$349 COUGAR $349 ANDRSASO9I.$349 GIPSY MOTH.-$349 GANAGOBIE. $349 SPORT MODEL KITS ONE NITS SR$473 ONE NITE 16$349 STRINGLESS WONDER- POcK ROG$139 KITS 0 PLANS 0 ACCESSORIES REAL JAPANESE TISSUE-PROPS COMPLETE CATALOG 5O MANY HARD TO FIND ITEMS D~D*Iuiup P 0 BOX 2498 -AMA LA MESA CALIF 92O4 FNONE 17141 4694673 1 442-4636 one-stop mail-order source try Creative Native 14548 Seventh St Vic torville CA 92392 Twenty-five cents will get eight-page price list Included such things nitrate dope Floquil paint balsa spruce 1/32-square upward Peck Sig Sterling Tern Aero Micro-X kits tissue Wylam plans Williams Bros parts chemicals sorts goodies Country Boy Kit Jim Clems Country Boy featured March issue now avail able kit form dealer doesnt have order direct Clemcraft PO Box 524 Sand Springs OK 74063 FAI Supply Attention Modelers Wives Saturday bought new garden hose highest quality new power lawn mower Sunday accidentally cut new hose half new lawn mower Now moral story modelers wives should require husbands take time away modeling order water garden mow lawn such.. Bob Meuser 4200 Gregory St Oak land CA 94619 Fokker D-VII I/Owens continued page 20 planking nose block pre-shaped added Complete stub wing plank ing top epoxy coating axle slots placing shock mount screws whole working gear simple con struct presents very scale-like action ground maneuvers landing cabane struts bent using small propane torch careful heat local bend area dull cherry-red color maintain spring temper much wire possible Dont heat around dope alcohol fumes might happen around balsa scraps work bench main tained location bending marking wire blackboard chalk can take heat disappearing know exactly bend during heating-bending process Al ways begin bending project center piece work outward allowing two inches extra ends errors making final bends easier form home-made spade bolts fabri cated threaded steel rod ends ing heated cherry red hammered flat Dont hammer piece unless part remains hot cracking may oc cur 1/16 hole drilled edges chamfered prevent wear plastic devices Note spade part bent angle threaded part Now heat part up cherry red again slowly let cool gives tempering effect part J bolts made similar fash ion again being careful avoid cold working bends will find bending around nail scrap piano wire held vise will make process quite simple Dont forget soft temper pieces 12 aluminum clips fabricated initially bending aluminum around prebent piano wire part fi nally held Next wire U-shaped aluminum squeezed vise together tighten U final bend retain wire made putting tails U vise just above bottom wire vise now closed tails holding wire clip place pressing downward suitable mounting hole drilled edges trimmed complete clip As fair amount strut length cover balsa fairings word about order began selecting enough x medium-hard hard balsa stock job shaped final oval cross section planing sanding Finally set up Dremel tool drill press guide clamped set rout out U groove down center proper depth engine tank installation require much description other say have run engine pressure have experienced un usual feed problems will say fill tank carry aircraft starting line before starting engine will -flood engine time Carry craft fuel line disconnected visible tank quickly detach able rubberband mount feature has well worth addition Since DVIII has plenty cowl room dont recommend behind-the-firewall tank stallation up front location keeps things nice clean inside radio compartment aids balancing process cowl mounted homemade aluminum clips held place self-thread ing screws Washers epoxied cowl avoid tightening screws di rectly against softer cowl materials top engine mount drilled self-threading screw used considerably stiffen whole works may notice heavy wire soldered glow plug terminal led out small hole cowl side makes clipping glow plug leads snap did have drill hole Austin Craft plug wrench straight through allowing wire run plug inserted removed servo installation certainly does lack space plan shows Yo-in plywood mounts servos Dont skimp servo mounting battery its foam covering mounted plywood cross piece rubberbands far forward possible radio three servos used balance craft after cover ing installation will vary shown get internal work completed before covering goes Notice have used rubberband put light tension internal antenna makes radio installation removal easy keeps antenna clean avoids kinks prevents overstressing wire surface throws set up follows ailerons 1 up elevator 2 up 2 down rudder has 2 right left deflections throws may seem large result positive control during taxiing slow flight routines large enough require constant attention during higher speed flight particular color scheme flown Jagdstaffel 6 late 1918 tail col ors alternating black white Super Monokote strips crosses white Monokote overlaid black overlaying generally making botch try method Using very point iron carefully lightly tack white down done along center line outward middle cross center firmly tacked work outward four intersections sweeping motion might add lots patience required black Mon okote overlaid using same outward semi-circular motion iron Tack down well wont get away Also never press down hard lead ing edge iron first passes Press hard trailing edge 92 Model Aviation FL WITI aUGUR Ga c93 peWUR 0 WaLNUT SCALE ASK FOR OUR KITS AND ACCESSORIES AT YOUR LOCAL DEALER IF NOT AVAILABLE AT YOUR DEALER ORDER DIRECT ADD ROE POSTAGE