Old Timers OFTEN TIMES choices models build somewhat limited engine availability Given fact ignition engines bit flexible glow counterparts can operated satisfactorily through wider rpm range still must match engine power air frame size Original ignition engines seem readily available larger dis placements Installing large engine medium size model can handicap 80 ounce per cubic inch displacement rule enforced will bring wing loading above required 8 oz per square foot will detract glide perform ance sometimes limited availability engines has led vestigate world engine conversions Northwest conversions uncommon until attended USFFC Taft oppor tunity observe some engines action Taft several examples Otto Bernhardts 77 products OS MAX con versions use well Bruce Chan dlers Black Knight engine series based OS engine also pleasure meeting Bruce field award ceremony performance engines prompted write gentlemen request loan sample engine testing reporting readers Model viation Both Otto Bruce very helpful cooperative before long test engines hand workmanship both examples outstanding timer assemblies both engines different other exposed point type similar old Super Cyclone 77 Products engine appeared quite stock other ignition components timer mount appeared polished Clarence Haught brass prop nut washer have replaced AMA-type spinner nut probably compensate space taken up crankshaft steel cam engine offered 15 20 25 30 35 40 cubic inch displacements Black Knight engine presented somewhat different quite attractive ap pearance crankcase has finished black crinkle finish head has smoothed polished Black Knights available 15 25 36 cubic inch displacements Bruce states instruction sheet makes no claim easy hand starting engines recommends use starter found both engines little cranky start responded readily electric starter Both engines run several times both add break-in time gain familiarity continued page 89 author came up prop/rpm fig ures Comparison popular engines period says lot Although little cranky hand-start both engines started readily elec tric startboth quite easy handle ENGINE DISPLACEMENT PROPRPM o RRV 23IO-3/2TOPFLITE 9.QOQ BLACK KNIGHT158-4 TOPFLITE IflflcL BANTAM198-4 TOPFLITE 198-4 TOPFLITE j9~Q ARDEN19lO-3V2TOPFLITE 7500 ELEVATION2200 FTTEMP 650 F 77 PRODUCTS259-4 TORNADO 12250 77 PRODUCTS25IO-32TOPFLIm[QQQ February 1977 47 Above 77 Products OS 25 conversion Otto Bernhardt Polished brass timer AMA safe ty nut add class attractive engine Louie Levine B compares Goldberg Val kyrie original Class C prototype Al An derson Beautiful Valkyrie late 30s 1200 pieces Stouffer photo Black Knight 15 Bruce Chandler black crinkle finish polished head distinguish ing features Both test engines ran OK ordinary white typing paper pointed modeling knife glued posi tion Assembly Cement stabilizer onto top rear fuselage being careful properly square viewed both rear top Next add rudder lining up accurately center stabi lizer trim tab Pin weight lower wing flat building board glue wing spreaders time tallest edges front wing since determine incidence Prop spread ers vertical position drying using sugar cubes dice something similar Add top wing adjusting spread ers needed line up properly Work carefully assure precise alignment complete wing assembly called cellule dry turn upside down glue wing mount members have cut 1/16 sheet should spaced snug fit either side fuselage too tight use folded piece coarse sandpaper inner sides too loose glue strip typing paper inner side mount wing glued may secured strip scotch tape until its proper position has determined Flying Try windless day pos sible test-fly over grass weeds just case Glide model few times shoulder height dives slide wing cellule forward slightly stalls slide assembly aft Next try few turns propeller launch gently throw Watch flight path carefully reshifting wing cellule required achieve smooth descent Increase number hand winds re peat model turns excessively side counter bending paper rud der tab opposite turn extreme cases tiny amount clay ballast may need added wing tip opposite di rection turn Gradually increase number propeller winds until model can safely handle full row knots rather peculiar skidding action model right after launch character istic stabilizing system no cause concern Up point standard North Pacific gum band has employed can replaced longer lubed rubber motor greater endurance ever longer motor may have tendency bunch up propeller hook creat ing prop-stopping bind carefully filing away clearance plastic propeller support bearing shown drawing problem can reduced Ex periment different motor sizes loop lengths use 2-mm size slow flights pier ROG starts better climb Postlude Since model construct ed several different versions have built Russ Barrera Warren Shipp came up triplane have exhibited similar stable flight characteris tics according newspaper clipping sent mother both Boeing Douglas engineers giving serious con sideration vertical tips call winglets Truly history repeats itself FF Old-Timers/Haught continued page 47 operating characteristics engines easy handle overly sensitive Response needle valve good Both engines very insensitive timer adjustments felt engines less flexibility over wide rpm range original ignition engines suspect related porting being designed glow operation higher rpms main purpose wanting test engines compare power output some familiar original ig nition engines similar displacement get information out readers assist choosing suitable powerplants design choice conversions put out power could create uncontrollable best difficult manage beast overpower ing model direct displacement com parison plan compare similar displacement engines using same prop fuel under same operating condi tions Familiar engines good condition used norms results shown accompanying table Both new engines tested performed very good well worth considera tion may reach Otto 77 Products 17119 So Harvard Blvd Gardena CA 90247 Bruce operates Chandler Engineer ing Company 7858 Farralone Ave Cano ga Park CA 91304 several other good craftsmen offering conversion work variety engines well few replica engines being manufactured provide flying engines Dont let elegant old-timer go unbuilt lack suitable powerplant proably bears mention within old-timer movement today rages Great Engine Controversy going hassle whether conver sions and/or replica engines should al lowed competition columnist sim ply doesnt want become involved issue nor feel Model Aviation could benefit anyway Otto Bernhardt sent along sample Blendzall engine try understand gasoline solu ble castor oil Otto suggested could mixed either gasoline Coleman fuel Hav ing never used Coleman fuel engines mixed Blendzall As Otto promised Blendzall fuel burned very 1st RC Masters Class 1st RC Advanced 1st RC Novice 1st Formula Pylon 1st Quarter Midget Pylon 1st CL Stunt Open 1st CL Stunt Senior 1st CL Stunt Junior WORLD CHAMPIONSHIP 1976 HOLLAND 1st 2nd 3rd CL STUNT MORE 1976 NATIONALS 1st CL Combat Op & Sr 1st CL Slow Comb Op & Sr 1st CL Carrier II Op Jr Sr 1st CL Carrier Sr Jr 1st CL Class D Speed Open 1st CL Class C Speed Sr & Jr 1st CL Class B Speed Op& Sr 1st CL Cl ASpeedOpSrJr 1st CL Formula 40 Open 1st CL Class B Proto Jr 1st FF Class B Open 1st FF Class C Open HIGH PERFORMANCE * COMPETITION PROVEN * THIN RIGID BLADES OF HARD MAPLE WOOD * SUPSRBLY FINISHED COMPIETELY FUEL PROOF SPECIAL PRO SERIES 2 FOR RC-FREE FLIGHT CONTROL LINE DIAPITCHPRICE 5/3489 63489 733%4119 83%456129 94566% 77%139 104e7149 106W 8W149 1066W169 114677/ 7% 7% 8159 1166W169 hA67169 126179 125W179 1356219 1466249 1556309 164% 6389 W WIDE 6LADE 6W EXTRA WIDE SERIES 400 B FOR SPEED & RACING ADVANCED DESIGN NO 1 IN PYLON RACING LEADING SPEED RECORD HOLDER OF ALL TIMES RC PYLON RACING DIA PITCHPRICE 5% 3%4119 7 55%6129 7 5N 5%N 6N129 9% 6% 6% 7 7%7%169 9 6%77%169 CONTROL LINE SPEED& RACING DIA PITCHPRICE 4%6%7119 455%119 6788%129 77%10%11139 869149 89N 9%N149 8%77%149 912 13199 N NARROW February 1977 89 7 IIOUT-PERFORMS ALL OTHERS AT THE 1976 NATIONALS NEW FORD TRI MOTOR 1195 TIGER MOTH 1295 Unique because such amazing scale det kits relatively e~- nq ways 5Uh g~ thifl1two channel se aflOt1er bOOtS oif spring AOCl yourclearly shown t ill lnrngnly detailed Plastic Parts uuing aof realism-in-miniature 4 ZERO Nifty control line models Theyre easiest ones world assembleall wood no tissue coveringonly 6 9 parts depending model ex cept Biplanes have few Genuine Nylon motor mount L NEW MESSERSCHMITT 495 ready bolt place-Complete control system less handle lines decals landing gear wheels etc makes building cinch assembly literally minutes can use 049 engine THEYRE AT YOUR DEALER GET OVER AND SEE THEM NOW boosters plastic 6-pack beverage packaging device Simply cut three double loops slip onto batteries Neat simple didnt think enjoyable fringe bene fits writing column receiving newsletters clubs around coun try SCIF Flightplug publishing index American model engines among other goodies Most newsFF Old-Timers continued clean seemed lubricate well did experience 250-500 rpm drop over regular gas oil mix attribute Coleman fuel rather oil Models certainly clean up easier using Blendzall Odds Ends years have bound two number-6 dry cells together tape use booster batteries Somewhere during travels summer observed modeler eliminated sticky tape problem joining letters carry local contest results listing winning airplane engine combi nations Some newsletters available sub scription basis interested drop line names addresses edi tors OT Event MonthPylon Some times lie back grass watch cabin ship circle realistically light lift watch glide gracefully smooth wheel landing wonder Carl Goldberg really did us favor intro ducing pylon model course competition encourages de velopment engines became strong er models smaller something needed control resultant increase power Aeromodeling experience change almost revolutionary gas engine vs rubber power course led us state art today free flight turn factor increasing popularity Old-Timer Pylon high performance class within Old-Timer movement often provides close races contest score boards multitude good designs engine classes category Most very clearly pylon ships wing mounted pylon varying height above fuselage Others obvious example according SAM rules Section 1 2c cabin model defined model having wing mounted upon cabin enclosure similar full-scale aircraft would place models like Albatross Guff pylon class though wings mounted directly top fuselage having no windows have discussed situation nu merous contest directors opinions rate Pylon provides OldTimer enthusiast best both worlds Old-Timer ignition flying dash modern performance See two months Clarence Haught Route 5 Box 16 Coeur dAlene ID 83814 CL Racing/Lee continued page 33 preference wing interme diate span years have flown Buster 160 wing span full-size aircraft scales out 24 1 foot 5% scale factor al lows build model 228 want go small feel own ap plication about right size Third want landing gear placed Remember rules state gear must emerge model scale location may swept ward backward desired gear must exit scale location own preference gear towards 90 Model Aviation lIlT E12 5PAN 34 SCALE I 1111 tIjsrAN 44 tRa Lfl till BEGINNERS Clarence Buhi flew 02-powered Quaker recent Northwest Old Timer Champs Albany Ore Note reversed prop test flight
Edition: Model Aviation - 1977/02
Page Numbers: 47, 89, 90
Old Timers OFTEN TIMES choices models build somewhat limited engine availability Given fact ignition engines bit flexible glow counterparts can operated satisfactorily through wider rpm range still must match engine power air frame size Original ignition engines seem readily available larger dis placements Installing large engine medium size model can handicap 80 ounce per cubic inch displacement rule enforced will bring wing loading above required 8 oz per square foot will detract glide perform ance sometimes limited availability engines has led vestigate world engine conversions Northwest conversions uncommon until attended USFFC Taft oppor tunity observe some engines action Taft several examples Otto Bernhardts 77 products OS MAX con versions use well Bruce Chan dlers Black Knight engine series based OS engine also pleasure meeting Bruce field award ceremony performance engines prompted write gentlemen request loan sample engine testing reporting readers Model viation Both Otto Bruce very helpful cooperative before long test engines hand workmanship both examples outstanding timer assemblies both engines different other exposed point type similar old Super Cyclone 77 Products engine appeared quite stock other ignition components timer mount appeared polished Clarence Haught brass prop nut washer have replaced AMA-type spinner nut probably compensate space taken up crankshaft steel cam engine offered 15 20 25 30 35 40 cubic inch displacements Black Knight engine presented somewhat different quite attractive ap pearance crankcase has finished black crinkle finish head has smoothed polished Black Knights available 15 25 36 cubic inch displacements Bruce states instruction sheet makes no claim easy hand starting engines recommends use starter found both engines little cranky start responded readily electric starter Both engines run several times both add break-in time gain familiarity continued page 89 author came up prop/rpm fig ures Comparison popular engines period says lot Although little cranky hand-start both engines started readily elec tric startboth quite easy handle ENGINE DISPLACEMENT PROPRPM o RRV 23IO-3/2TOPFLITE 9.QOQ BLACK KNIGHT158-4 TOPFLITE IflflcL BANTAM198-4 TOPFLITE 198-4 TOPFLITE j9~Q ARDEN19lO-3V2TOPFLITE 7500 ELEVATION2200 FTTEMP 650 F 77 PRODUCTS259-4 TORNADO 12250 77 PRODUCTS25IO-32TOPFLIm[QQQ February 1977 47 Above 77 Products OS 25 conversion Otto Bernhardt Polished brass timer AMA safe ty nut add class attractive engine Louie Levine B compares Goldberg Val kyrie original Class C prototype Al An derson Beautiful Valkyrie late 30s 1200 pieces Stouffer photo Black Knight 15 Bruce Chandler black crinkle finish polished head distinguish ing features Both test engines ran OK ordinary white typing paper pointed modeling knife glued posi tion Assembly Cement stabilizer onto top rear fuselage being careful properly square viewed both rear top Next add rudder lining up accurately center stabi lizer trim tab Pin weight lower wing flat building board glue wing spreaders time tallest edges front wing since determine incidence Prop spread ers vertical position drying using sugar cubes dice something similar Add top wing adjusting spread ers needed line up properly Work carefully assure precise alignment complete wing assembly called cellule dry turn upside down glue wing mount members have cut 1/16 sheet should spaced snug fit either side fuselage too tight use folded piece coarse sandpaper inner sides too loose glue strip typing paper inner side mount wing glued may secured strip scotch tape until its proper position has determined Flying Try windless day pos sible test-fly over grass weeds just case Glide model few times shoulder height dives slide wing cellule forward slightly stalls slide assembly aft Next try few turns propeller launch gently throw Watch flight path carefully reshifting wing cellule required achieve smooth descent Increase number hand winds re peat model turns excessively side counter bending paper rud der tab opposite turn extreme cases tiny amount clay ballast may need added wing tip opposite di rection turn Gradually increase number propeller winds until model can safely handle full row knots rather peculiar skidding action model right after launch character istic stabilizing system no cause concern Up point standard North Pacific gum band has employed can replaced longer lubed rubber motor greater endurance ever longer motor may have tendency bunch up propeller hook creat ing prop-stopping bind carefully filing away clearance plastic propeller support bearing shown drawing problem can reduced Ex periment different motor sizes loop lengths use 2-mm size slow flights pier ROG starts better climb Postlude Since model construct ed several different versions have built Russ Barrera Warren Shipp came up triplane have exhibited similar stable flight characteris tics according newspaper clipping sent mother both Boeing Douglas engineers giving serious con sideration vertical tips call winglets Truly history repeats itself FF Old-Timers/Haught continued page 47 operating characteristics engines easy handle overly sensitive Response needle valve good Both engines very insensitive timer adjustments felt engines less flexibility over wide rpm range original ignition engines suspect related porting being designed glow operation higher rpms main purpose wanting test engines compare power output some familiar original ig nition engines similar displacement get information out readers assist choosing suitable powerplants design choice conversions put out power could create uncontrollable best difficult manage beast overpower ing model direct displacement com parison plan compare similar displacement engines using same prop fuel under same operating condi tions Familiar engines good condition used norms results shown accompanying table Both new engines tested performed very good well worth considera tion may reach Otto 77 Products 17119 So Harvard Blvd Gardena CA 90247 Bruce operates Chandler Engineer ing Company 7858 Farralone Ave Cano ga Park CA 91304 several other good craftsmen offering conversion work variety engines well few replica engines being manufactured provide flying engines Dont let elegant old-timer go unbuilt lack suitable powerplant proably bears mention within old-timer movement today rages Great Engine Controversy going hassle whether conver sions and/or replica engines should al lowed competition columnist sim ply doesnt want become involved issue nor feel Model Aviation could benefit anyway Otto Bernhardt sent along sample Blendzall engine try understand gasoline solu ble castor oil Otto suggested could mixed either gasoline Coleman fuel Hav ing never used Coleman fuel engines mixed Blendzall As Otto promised Blendzall fuel burned very 1st RC Masters Class 1st RC Advanced 1st RC Novice 1st Formula Pylon 1st Quarter Midget Pylon 1st CL Stunt Open 1st CL Stunt Senior 1st CL Stunt Junior WORLD CHAMPIONSHIP 1976 HOLLAND 1st 2nd 3rd CL STUNT MORE 1976 NATIONALS 1st CL Combat Op & Sr 1st CL Slow Comb Op & Sr 1st CL Carrier II Op Jr Sr 1st CL Carrier Sr Jr 1st CL Class D Speed Open 1st CL Class C Speed Sr & Jr 1st CL Class B Speed Op& Sr 1st CL Cl ASpeedOpSrJr 1st CL Formula 40 Open 1st CL Class B Proto Jr 1st FF Class B Open 1st FF Class C Open HIGH PERFORMANCE * COMPETITION PROVEN * THIN RIGID BLADES OF HARD MAPLE WOOD * SUPSRBLY FINISHED COMPIETELY FUEL PROOF SPECIAL PRO SERIES 2 FOR RC-FREE FLIGHT CONTROL LINE DIAPITCHPRICE 5/3489 63489 733%4119 83%456129 94566% 77%139 104e7149 106W 8W149 1066W169 114677/ 7% 7% 8159 1166W169 hA67169 126179 125W179 1356219 1466249 1556309 164% 6389 W WIDE 6LADE 6W EXTRA WIDE SERIES 400 B FOR SPEED & RACING ADVANCED DESIGN NO 1 IN PYLON RACING LEADING SPEED RECORD HOLDER OF ALL TIMES RC PYLON RACING DIA PITCHPRICE 5% 3%4119 7 55%6129 7 5N 5%N 6N129 9% 6% 6% 7 7%7%169 9 6%77%169 CONTROL LINE SPEED& RACING DIA PITCHPRICE 4%6%7119 455%119 6788%129 77%10%11139 869149 89N 9%N149 8%77%149 912 13199 N NARROW February 1977 89 7 IIOUT-PERFORMS ALL OTHERS AT THE 1976 NATIONALS NEW FORD TRI MOTOR 1195 TIGER MOTH 1295 Unique because such amazing scale det kits relatively e~- nq ways 5Uh g~ thifl1two channel se aflOt1er bOOtS oif spring AOCl yourclearly shown t ill lnrngnly detailed Plastic Parts uuing aof realism-in-miniature 4 ZERO Nifty control line models Theyre easiest ones world assembleall wood no tissue coveringonly 6 9 parts depending model ex cept Biplanes have few Genuine Nylon motor mount L NEW MESSERSCHMITT 495 ready bolt place-Complete control system less handle lines decals landing gear wheels etc makes building cinch assembly literally minutes can use 049 engine THEYRE AT YOUR DEALER GET OVER AND SEE THEM NOW boosters plastic 6-pack beverage packaging device Simply cut three double loops slip onto batteries Neat simple didnt think enjoyable fringe bene fits writing column receiving newsletters clubs around coun try SCIF Flightplug publishing index American model engines among other goodies Most newsFF Old-Timers continued clean seemed lubricate well did experience 250-500 rpm drop over regular gas oil mix attribute Coleman fuel rather oil Models certainly clean up easier using Blendzall Odds Ends years have bound two number-6 dry cells together tape use booster batteries Somewhere during travels summer observed modeler eliminated sticky tape problem joining letters carry local contest results listing winning airplane engine combi nations Some newsletters available sub scription basis interested drop line names addresses edi tors OT Event MonthPylon Some times lie back grass watch cabin ship circle realistically light lift watch glide gracefully smooth wheel landing wonder Carl Goldberg really did us favor intro ducing pylon model course competition encourages de velopment engines became strong er models smaller something needed control resultant increase power Aeromodeling experience change almost revolutionary gas engine vs rubber power course led us state art today free flight turn factor increasing popularity Old-Timer Pylon high performance class within Old-Timer movement often provides close races contest score boards multitude good designs engine classes category Most very clearly pylon ships wing mounted pylon varying height above fuselage Others obvious example according SAM rules Section 1 2c cabin model defined model having wing mounted upon cabin enclosure similar full-scale aircraft would place models like Albatross Guff pylon class though wings mounted directly top fuselage having no windows have discussed situation nu merous contest directors opinions rate Pylon provides OldTimer enthusiast best both worlds Old-Timer ignition flying dash modern performance See two months Clarence Haught Route 5 Box 16 Coeur dAlene ID 83814 CL Racing/Lee continued page 33 preference wing interme diate span years have flown Buster 160 wing span full-size aircraft scales out 24 1 foot 5% scale factor al lows build model 228 want go small feel own ap plication about right size Third want landing gear placed Remember rules state gear must emerge model scale location may swept ward backward desired gear must exit scale location own preference gear towards 90 Model Aviation lIlT E12 5PAN 34 SCALE I 1111 tIjsrAN 44 tRa Lfl till BEGINNERS Clarence Buhi flew 02-powered Quaker recent Northwest Old Timer Champs Albany Ore Note reversed prop test flight
Edition: Model Aviation - 1977/02
Page Numbers: 47, 89, 90
Old Timers OFTEN TIMES choices models build somewhat limited engine availability Given fact ignition engines bit flexible glow counterparts can operated satisfactorily through wider rpm range still must match engine power air frame size Original ignition engines seem readily available larger dis placements Installing large engine medium size model can handicap 80 ounce per cubic inch displacement rule enforced will bring wing loading above required 8 oz per square foot will detract glide perform ance sometimes limited availability engines has led vestigate world engine conversions Northwest conversions uncommon until attended USFFC Taft oppor tunity observe some engines action Taft several examples Otto Bernhardts 77 products OS MAX con versions use well Bruce Chan dlers Black Knight engine series based OS engine also pleasure meeting Bruce field award ceremony performance engines prompted write gentlemen request loan sample engine testing reporting readers Model viation Both Otto Bruce very helpful cooperative before long test engines hand workmanship both examples outstanding timer assemblies both engines different other exposed point type similar old Super Cyclone 77 Products engine appeared quite stock other ignition components timer mount appeared polished Clarence Haught brass prop nut washer have replaced AMA-type spinner nut probably compensate space taken up crankshaft steel cam engine offered 15 20 25 30 35 40 cubic inch displacements Black Knight engine presented somewhat different quite attractive ap pearance crankcase has finished black crinkle finish head has smoothed polished Black Knights available 15 25 36 cubic inch displacements Bruce states instruction sheet makes no claim easy hand starting engines recommends use starter found both engines little cranky start responded readily electric starter Both engines run several times both add break-in time gain familiarity continued page 89 author came up prop/rpm fig ures Comparison popular engines period says lot Although little cranky hand-start both engines started readily elec tric startboth quite easy handle ENGINE DISPLACEMENT PROPRPM o RRV 23IO-3/2TOPFLITE 9.QOQ BLACK KNIGHT158-4 TOPFLITE IflflcL BANTAM198-4 TOPFLITE 198-4 TOPFLITE j9~Q ARDEN19lO-3V2TOPFLITE 7500 ELEVATION2200 FTTEMP 650 F 77 PRODUCTS259-4 TORNADO 12250 77 PRODUCTS25IO-32TOPFLIm[QQQ February 1977 47 Above 77 Products OS 25 conversion Otto Bernhardt Polished brass timer AMA safe ty nut add class attractive engine Louie Levine B compares Goldberg Val kyrie original Class C prototype Al An derson Beautiful Valkyrie late 30s 1200 pieces Stouffer photo Black Knight 15 Bruce Chandler black crinkle finish polished head distinguish ing features Both test engines ran OK ordinary white typing paper pointed modeling knife glued posi tion Assembly Cement stabilizer onto top rear fuselage being careful properly square viewed both rear top Next add rudder lining up accurately center stabi lizer trim tab Pin weight lower wing flat building board glue wing spreaders time tallest edges front wing since determine incidence Prop spread ers vertical position drying using sugar cubes dice something similar Add top wing adjusting spread ers needed line up properly Work carefully assure precise alignment complete wing assembly called cellule dry turn upside down glue wing mount members have cut 1/16 sheet should spaced snug fit either side fuselage too tight use folded piece coarse sandpaper inner sides too loose glue strip typing paper inner side mount wing glued may secured strip scotch tape until its proper position has determined Flying Try windless day pos sible test-fly over grass weeds just case Glide model few times shoulder height dives slide wing cellule forward slightly stalls slide assembly aft Next try few turns propeller launch gently throw Watch flight path carefully reshifting wing cellule required achieve smooth descent Increase number hand winds re peat model turns excessively side counter bending paper rud der tab opposite turn extreme cases tiny amount clay ballast may need added wing tip opposite di rection turn Gradually increase number propeller winds until model can safely handle full row knots rather peculiar skidding action model right after launch character istic stabilizing system no cause concern Up point standard North Pacific gum band has employed can replaced longer lubed rubber motor greater endurance ever longer motor may have tendency bunch up propeller hook creat ing prop-stopping bind carefully filing away clearance plastic propeller support bearing shown drawing problem can reduced Ex periment different motor sizes loop lengths use 2-mm size slow flights pier ROG starts better climb Postlude Since model construct ed several different versions have built Russ Barrera Warren Shipp came up triplane have exhibited similar stable flight characteris tics according newspaper clipping sent mother both Boeing Douglas engineers giving serious con sideration vertical tips call winglets Truly history repeats itself FF Old-Timers/Haught continued page 47 operating characteristics engines easy handle overly sensitive Response needle valve good Both engines very insensitive timer adjustments felt engines less flexibility over wide rpm range original ignition engines suspect related porting being designed glow operation higher rpms main purpose wanting test engines compare power output some familiar original ig nition engines similar displacement get information out readers assist choosing suitable powerplants design choice conversions put out power could create uncontrollable best difficult manage beast overpower ing model direct displacement com parison plan compare similar displacement engines using same prop fuel under same operating condi tions Familiar engines good condition used norms results shown accompanying table Both new engines tested performed very good well worth considera tion may reach Otto 77 Products 17119 So Harvard Blvd Gardena CA 90247 Bruce operates Chandler Engineer ing Company 7858 Farralone Ave Cano ga Park CA 91304 several other good craftsmen offering conversion work variety engines well few replica engines being manufactured provide flying engines Dont let elegant old-timer go unbuilt lack suitable powerplant proably bears mention within old-timer movement today rages Great Engine Controversy going hassle whether conver sions and/or replica engines should al lowed competition columnist sim ply doesnt want become involved issue nor feel Model Aviation could benefit anyway Otto Bernhardt sent along sample Blendzall engine try understand gasoline solu ble castor oil Otto suggested could mixed either gasoline Coleman fuel Hav ing never used Coleman fuel engines mixed Blendzall As Otto promised Blendzall fuel burned very 1st RC Masters Class 1st RC Advanced 1st RC Novice 1st Formula Pylon 1st Quarter Midget Pylon 1st CL Stunt Open 1st CL Stunt Senior 1st CL Stunt Junior WORLD CHAMPIONSHIP 1976 HOLLAND 1st 2nd 3rd CL STUNT MORE 1976 NATIONALS 1st CL Combat Op & Sr 1st CL Slow Comb Op & Sr 1st CL Carrier II Op Jr Sr 1st CL Carrier Sr Jr 1st CL Class D Speed Open 1st CL Class C Speed Sr & Jr 1st CL Class B Speed Op& Sr 1st CL Cl ASpeedOpSrJr 1st CL Formula 40 Open 1st CL Class B Proto Jr 1st FF Class B Open 1st FF Class C Open HIGH PERFORMANCE * COMPETITION PROVEN * THIN RIGID BLADES OF HARD MAPLE WOOD * SUPSRBLY FINISHED COMPIETELY FUEL PROOF SPECIAL PRO SERIES 2 FOR RC-FREE FLIGHT CONTROL LINE DIAPITCHPRICE 5/3489 63489 733%4119 83%456129 94566% 77%139 104e7149 106W 8W149 1066W169 114677/ 7% 7% 8159 1166W169 hA67169 126179 125W179 1356219 1466249 1556309 164% 6389 W WIDE 6LADE 6W EXTRA WIDE SERIES 400 B FOR SPEED & RACING ADVANCED DESIGN NO 1 IN PYLON RACING LEADING SPEED RECORD HOLDER OF ALL TIMES RC PYLON RACING DIA PITCHPRICE 5% 3%4119 7 55%6129 7 5N 5%N 6N129 9% 6% 6% 7 7%7%169 9 6%77%169 CONTROL LINE SPEED& RACING DIA PITCHPRICE 4%6%7119 455%119 6788%129 77%10%11139 869149 89N 9%N149 8%77%149 912 13199 N NARROW February 1977 89 7 IIOUT-PERFORMS ALL OTHERS AT THE 1976 NATIONALS NEW FORD TRI MOTOR 1195 TIGER MOTH 1295 Unique because such amazing scale det kits relatively e~- nq ways 5Uh g~ thifl1two channel se aflOt1er bOOtS oif spring AOCl yourclearly shown t ill lnrngnly detailed Plastic Parts uuing aof realism-in-miniature 4 ZERO Nifty control line models Theyre easiest ones world assembleall wood no tissue coveringonly 6 9 parts depending model ex cept Biplanes have few Genuine Nylon motor mount L NEW MESSERSCHMITT 495 ready bolt place-Complete control system less handle lines decals landing gear wheels etc makes building cinch assembly literally minutes can use 049 engine THEYRE AT YOUR DEALER GET OVER AND SEE THEM NOW boosters plastic 6-pack beverage packaging device Simply cut three double loops slip onto batteries Neat simple didnt think enjoyable fringe bene fits writing column receiving newsletters clubs around coun try SCIF Flightplug publishing index American model engines among other goodies Most newsFF Old-Timers continued clean seemed lubricate well did experience 250-500 rpm drop over regular gas oil mix attribute Coleman fuel rather oil Models certainly clean up easier using Blendzall Odds Ends years have bound two number-6 dry cells together tape use booster batteries Somewhere during travels summer observed modeler eliminated sticky tape problem joining letters carry local contest results listing winning airplane engine combi nations Some newsletters available sub scription basis interested drop line names addresses edi tors OT Event MonthPylon Some times lie back grass watch cabin ship circle realistically light lift watch glide gracefully smooth wheel landing wonder Carl Goldberg really did us favor intro ducing pylon model course competition encourages de velopment engines became strong er models smaller something needed control resultant increase power Aeromodeling experience change almost revolutionary gas engine vs rubber power course led us state art today free flight turn factor increasing popularity Old-Timer Pylon high performance class within Old-Timer movement often provides close races contest score boards multitude good designs engine classes category Most very clearly pylon ships wing mounted pylon varying height above fuselage Others obvious example according SAM rules Section 1 2c cabin model defined model having wing mounted upon cabin enclosure similar full-scale aircraft would place models like Albatross Guff pylon class though wings mounted directly top fuselage having no windows have discussed situation nu merous contest directors opinions rate Pylon provides OldTimer enthusiast best both worlds Old-Timer ignition flying dash modern performance See two months Clarence Haught Route 5 Box 16 Coeur dAlene ID 83814 CL Racing/Lee continued page 33 preference wing interme diate span years have flown Buster 160 wing span full-size aircraft scales out 24 1 foot 5% scale factor al lows build model 228 want go small feel own ap plication about right size Third want landing gear placed Remember rules state gear must emerge model scale location may swept ward backward desired gear must exit scale location own preference gear towards 90 Model Aviation lIlT E12 5PAN 34 SCALE I 1111 tIjsrAN 44 tRa Lfl till BEGINNERS Clarence Buhi flew 02-powered Quaker recent Northwest Old Timer Champs Albany Ore Note reversed prop test flight