THERE ARE six FAI world records radio-controlled models emphasize fuel economy spring 1977 five records resided USA Giertz Texas held landplane duration 1429 51 having taken record Japan held landplane straight-line distance 266 mi taken Italy closed-course Atta distance 424 mi n USSR Bowles California held seaplane straightline distance 135 mi iously also held USA Petersen West Virginia held seaplane closed-course distance 153 mi taken Germany remain ing economy record seaplane duration 61817 held Kaiser Germany September 1976 two attempts extend landplane duration record failed first ended after seven hours fuel pressure regulator gave out two thirds fuel still remaining tanks second attempt seriously damaged underpowered model stalled first slow turn after takeoff hard say day dis tressing decided work other records until reliability improved Shark designed FAI seaplane economy records Since never seen seaplane fly hull design derived previous record-holding models Brice Petersen Dale Reed bottom has no V flat except step shape may produce rougher ride V hull needs remarkably little power takeoff Plywood sheeting used bottom front hull balsa sheeting behind step An unusual feature fuselage hull sides top made open built-up struc biggest problems flying FAI records lining up required CD observers and/or timers once get folks give up day pressure fly abort due weather etc So wind bends grass stirs up choppy sea John Taliman hands over transmitter author restrains Shark its fin Power hybrid Diesel both mixture throttle servos SHARK Authors restarts Shark second try day previous landplane distance attempts Weber built 29 diesels Although tank remote managed record flight pressure 36 Model Aviation ture depends MonoKote cov ering strength during takeoff land ing fuselage contains 1976 Kraft radio SHARK SETS 2 MORE RECORDS September 2 after report completed Shark set anew closedcourse seaplane record 508 kilome ters 315565 miles same flight established new seaplane endur ance record 9 hrs 7 mm 37 sec 11-lb seaplane gross powered 29 diesel Six fuel economy rec ords four categories have set Weber date seaplane duration record broken twice exceeded ovn previous record landplane closed course distance twice Russian record intervening between Webers flights II 0 I FEET L/ 1 Breaking German-held seaplane duration record Record Shark forced down time 75623 system four servos Rudder ele vator servos well receiver reached through hatch between wing tail Mixture throttle servos under engine pylon three amperehour battery located nose has ade quate capacity 24 hours 7-foot wing span requires four-foot balsa sheets splices able obtain some excellent lightweight long Midwest wood tapered 1067 sq wing uses Clark Y airfoil increased 15% thickness 33% stab has 9% Clark Z Yes Virginia other Clark airfoils Clark Y lower profile flat beginning 30% behind leading edge Z begin ningat 15% Shark inboard wing halves cov ered transparent yellow blue MonoKote visibility against differing sky backgrounds outboard halves white reflect light spotlights planned use continue flying night Economical power supplied hy brid 40 diesel engine Having learned build 29 diesels landplane distance records expected little difficulty 40 However higher speed operation ne cessary water takeoff proved unsatisfactory Only after hours teststand experimentation engine modifi cation did behave well meantime bitten 13 stiwhes worth Con trary established tradition folklore engine pulls fuel suction 42 percent fuel December1977 37 2 remaining U Richard Weber Things deceivingly peaceful Shark passed old German record Transmitter charged auto battery right foreground Finding suitable water site tedious problem aerial photograph consulted Since radio sealed salt water avoided Although flat-bottomed hull gives rough ride takeoffs full load remarkably easy requiring surprisingly little power lift off wing airfoil Clark V increased 15% thickness stabilizer airfoil 9% Clark Z Two hours flight Concorde passed overhead Shark would still flying after jet reached Paris tanks located under Shark wing After Shark completed early year necessary choose seaplane record attempt first Two facts decisive Surpassing German duration record would produce econ omy record monopoly USA Also further duration experience should help later try landplane duration rec ord conceivable Shark could exceed landplane record Finding flying site proved un expected problem Because radio sealed compartment wanted avoid salt water Large freshwater lakes hard find Maryland Inquiries several RC fields hobby shops did uncover place seaplane models flown regularly beautiful four-acre farm pond found aerial photo graph farmer said no county policeman visiting flying field sug gested lake Bowie Md city fathers probably never seen radio-controlled model decided refuse permission Nearby rivers inaccessible banks low-flying aircraft too people Finally heard new lake Columbia Md ideal dura tion attempt June 3 dawned sunny cool windy official witnesses record tempt met about 830 am Lake Elkhorn Assisting CD Luther Jackson John Tallman Kenny Greenhouse PGRC Glenn Scillian DCRC Pre vious Shark test flights demonstrated Power Prop 11/6 could take ofT easily both empty carrying fourpound bottle water aboard engine completely reliable ticipated troublefree day After fueling up 84 fi oz weigh-in just under 11 pounds some photos digital watch es recorded start what expected long flight Thermal activity evident before 10 am times low throttle plus full down trim plus down pressure control stick necessary keep Shark sight again downdraft would demand full up trim much power stay above ground model high throttle cut back difficult hear engine During periods 50 minutes flight realized silence really meant engine stopped decision made land Shark ground would have wait wind blow ashore lake landing broke forward fuselage joint quick 38 Model Aviation Flying hours end much test pilots endurance aircraft Shielding eyes avoiding stiff neck Dick became prone pilot Note transmitter charger cord glue job some sticky MonoKote put us back business engine apparently stopped cause too lean Test flights used just four-ounce tank fuselage Now long fuel lines connecting two series tanks resistance caused overlean condition servo mixture control full rich Moral test complete configuration fore record attempt After refueling reweighing engine adjustments another flight tried takeoff near full throttle thing beauty soon after clearing dam engine died blind landing below dam would disastrous little alti tude airspeed much will power Shark turned around nursed back water landing Would engine con tinue misbehave day suction wrong approach fuel system concluded near full throttle en gine still going lean because long way down tanks full throttle really needed rather try ing adjust throttle mixture settings further third takeoff made half throttle Maintaining altitude never re quired smaller throttle opening provided better suction After two engine failures crew could relax fearing strike three next Time passed 115 over two hours after takeoff Concorde Dulles Airport flew overhead Someone remarked should still flying arrived Parisa fantastic thought thermals apply down elevator gingerly fear cooling engine too much dive downdrafts lots power needed stay above uneven terrain seemed like Continued page 90 December1977 39 tired happy crew after successful flight L B John Tailman Glen Scillian uuur iawaun ana UICK vycoer ur inc six IRI categories RC fuel economy Weber now holds threeprevious two landplane straight-line distance 266 miles closed-course distance 424 miles Weber 7-1/2-ft Shark Inboard wing halves covered transparent yellow blue Mon okote visibility against differing sky backgrounds Outboard halves white reflect light spot lights since planned fly night pic Carol Jean Weber others Kenny Greenhouse r Roger Edwards won 1976 Southwest Regionals two Guardians accompanying photos comparing two models can readily see differ ent shape vertical tail ab sence subrudders prototype Other differences less obvious can seen better drawings fuselages two aircraft very similar rest design went through some significant changes between prototype production aircraft horizontal tail area increased creasing span along some other minor changes shape vertical sta bilizer increased area changed shape wing span increased raising aspect ratio Sweep angle also changed slightly Slow-speed handling apparently problem prototype since changes aimed improving aspect performance addition larger tail surfaces flap span creased Fixed slots added forward ailerons spoilers installed improve roll response end result product review product review product review Raceplane Drawings Morrison Repla-Tech now sales outlet 85 Hirschs fabulous raceplane drawings Over 235 drawings fered Repla-Techs new raceplane catalog 25 cents Included models Wedell Williams Gee Bee Keith Rider Howard racers plus Morrison Repla-Toch 48500 McKenzie Hwy. Vida OR 97488 product review product review product review two airplanes similar appearance quite different detail XTB3F-25 much AF-25 rounded tail As model smaller tail flaps XTB3F-25 might cause slow-speed performance slightly worse AF-25 model just full-scale airplanes difference should very significant except very light mod els long nose would tend put balance point too far forward smaller tail Ron Duly flew XTB3F-2S models first place both Class Class II Nats performance potential later issues Ill cover some other less known carrier aircraft including car rier arm German Luftwaffe aircraft would particularly like see have questions concerning specific aircraft let know Richard L Perry 5016 ngelita Ave Dayton OH 45424 Shark Weber continued page 39 other always present transmitter battery kept charged connecting battery field box field box battery voltage began drop car battery pressed service new record surpass German mark 2% needed 62551 As duration approached grew appre hensive Would engine let us down now fuel holding out somewhat rich mixture long could glide necessary engine kept purring new record Now lets go broke take risks stretch record far possi ble thermals engine slowed bare tick-over mixture adjusted leaner An hour half later tac tics contributed sudden termination flight flying slowly 50 feet some trees beside lake left wingtip stalled Shark turned toward trees encouraged wind blowing way Hard right rudder little im mediate effect slow-flying plane desperation opened throttle blow air across rudder try clear tops trees engine im mediately died lean within two seconds Shark firmly ensnared 60 feet up tallest oak tree end record flight PROP SAFETY interest promoting safety following being published upon request Top Flite Models Inc Top Flite Models Inc has announced adoption Standards Instructions Warnings respect using propellers safely properly Standards carefully developed cooperation other propeller manufacturers model engine kit manufacturers others anticipated Instructions Warnings will adopted propeller manufacturers also engine kit equipment manu facturers Top Flite has purposely omitted copy right Instructions Warnings order segments industry volved propellers may freely use Standards Additionally Top Flite states copies Standards will available cost plus small handling charge inter ested manufacturer distributor dealer inclusion product distribution modelers INSTRUCTION AND WARNING SHEET Use Propellers Safely & Properly 1 Fo correct propeller size sod pitch follow advice engine manufacturer prop chart availahle frea dasler Top Flits 2 Install prop curved side facing Securely tighten propeller nut use correct wrench purpose 3 When starting engine hasp spectators away 20 feet out path rotating prop 4 Keep hands away prop much possihle use chicken stick device electric starter follow instructions supplied device 5 Keep face hody away path prop start run engine 6 Make engine adjustments hehind rotating prop 7 To stop engine cut off fuel sapply follow engine manufacturers directions Dont use hands fingers part hody Dont threw anything running engine 8 Discard props nicks scratches splits cracks sign wear damage Never repair alter shave hend propl Normal engine vihration can loosen prop inspect end retighten necessaryl Additional Precautions A Use safety glasses starting running angina B Dont run engine area loose gravel sand prop may throw such material face eyes C KEEP AWAY FROM PROP Loose clothingshirt sleeves ties scarfsor loose ohiects pencils screw drivers may fafl out shirt jacket pockets prop D Make certain glow plug dip connector secure will pop nff otherwise get intO reining prop E If spinner used certain its edges touch prop hlades Additional Special Warnings Instructions Nylon Propellers Nylon props affected hy amount moisture air will heceme hrittle hreak too dry Since amount moisture may vary greatly time manu facture follows 1 Boil propeller water 30 minutes hef ore first use Water should cover entire prop cover pat Let prop stay water until cool 2 You can add dye IRit etc water identify hoiled props against unhoiled 3 After use prop remove engine wrap meist cloth paper towel rag store water tight plastic hag 90 Model Aviation FINE QUALITY KITS AND ACCESSORIES 5 SCALE PLASTIC KITS FLYING MODEL ACCESSORIES SCALE PILOTS INE GUNS WHEELS & WHEEL PANTS ENGINE KITS & CYLINDERS SEND 501 FOR COMPLETE CATALOG 181 Dept MA PAWNEE STREET ILLIANS SAN MARCOS CALIFORNIA 9 ScALS DRAWINGS/I MORRISON1977 cATALOG 25$ ii TECH ENZIE HWY InternatIohe/ VIDA OREGON 97460 MR MODELER manufacture special ized accessories make R/C modeling easier never out stock items manufacture Seeyour deal er send first class stamp catalog sheets listing over 70 items complete pictures prices OVER 12 YEARS SERVICE WHEELS RO WHEELS Smooth inflatable wheels big airplanes Features two piece bolt gether hubs hub caps Wheels can inflated deflated thru tiny valve side tire pressure de sire Truly remark able realistic looking wheel I$795 Pair 450R4-1 /2 Diameter995 Pair SOOR 5 Diameter11 95 Pair 550R5-1 /2 Diameter1 395 Pair 600R ameter1 595 Pair Low bounce shock absorbing wheels featuring 6 spoke dura hub finest quality hand inspected 175Tor RWheels 1-3/4$219 Pair 200 T RWheels 2239 Pair 225 T R SWheels 2-1/4259 Pair 250 T R SWheels 2-1/2279 Pair 275 T R 5Wheels 2-3/4299 Pair 300 T R 5Wheels 3319 Pair 325 T RWheels 3-1 /4339 Pair 350 T RWheels 3-1/2359 Pair DUBRO PRODUCTS INCORPORATED 480 BONNER ROAD WAUCONDA ILL 60084 total duration 75623 Fortunately FAI Sporting Code states explicitly required seaplanes land water So new record record-setting plane tree top Glenn Scillian went get help friends area spied ropes holding up canopy ropes hatchet John Tallmans car plunged through poison ivy base plane-eating tree climbed tree attacked offending branches After long exhausting work Shark fell stages ground delighted find damage minimal Lots fuel left later measure ment showed 35 fi oz 42% origi nal fuel remained tanks enough additional 5 hours same rate fuel usage longer leaner mixture ligher model ever records made actual rather potential performance Surpassing German record 25% quite satis fying result Special thanks order official witnesses some took day va cation leave help Friday lake busy Particular recognition due invisible Kenny Greenhouse Long ago Kenny assigned role documenting record attempts camera have never picture record articles Thanks also Dean Smith Lee Shiflett supplied critical parts flight Record setting exciting re warding activity doesnt require weekly travel follow contest circuit yet can compete entire world Opti mizing element modelair frame engine fuel system other componentsis necessary succeed Originality needed since wont find standardized approaches seen nor mal competition Free flight neglected area USA has 27 outdoor free flight records nearly held eastern European countries Control line radio control also have room improved performances Lets get going Tow Signs/Layers continued page 50 remaining raw fabric edges aliphatic glue has thinned 50-50 water Coat just /8-in margin fab ric will effectively stop edges raveling yet leave letter flexi ble After glue dry remove letter board trim off excess thread rough fabric edges part stiffener extends beyond edge letter Leave connector pole extra long now Photo 14 shows steps forming connector end connector pole Notice letters square front corners must have fabric cut out slight ly area Slip two sequins place leaving 1/16 3/32 between Although hole sequins small can forced over bamboo easily shish kebab style scrap ply wood hole makes fine tool push trim off bamboo leaving about 1/32 projecting form good glue joint Now glue sequins place epoxy sure form complete fillet epoxy between bamboo sequin surfaces As form inboard fillet let epoxy cover joint between connector line thread connector pole reinforcement junction pole sequins thread must good strong since entire towing load concentrated point last step letter finished Slide split-shot weight place photo 14 squeeze tightly fastened over both connector line thread fabric Youll have trim fabric edge back little get weight right position shapes other characters vary illustrated construc tion principles same charac ter has connector pole front connector loops back strip bamboo stiffens edge lead ing edge character needs balance December1977 91 WHOLE NEW LINE OF SMOOTH INFLATABLE BIG WHEELS 4 4Y 5 51h& 6 TREAD T SMOOTH R SLICKS 5 2
Edition: Model Aviation - 1977/12
Page Numbers: 36, 37, 38, 39, 90, 91
THERE ARE six FAI world records radio-controlled models emphasize fuel economy spring 1977 five records resided USA Giertz Texas held landplane duration 1429 51 having taken record Japan held landplane straight-line distance 266 mi taken Italy closed-course Atta distance 424 mi n USSR Bowles California held seaplane straightline distance 135 mi iously also held USA Petersen West Virginia held seaplane closed-course distance 153 mi taken Germany remain ing economy record seaplane duration 61817 held Kaiser Germany September 1976 two attempts extend landplane duration record failed first ended after seven hours fuel pressure regulator gave out two thirds fuel still remaining tanks second attempt seriously damaged underpowered model stalled first slow turn after takeoff hard say day dis tressing decided work other records until reliability improved Shark designed FAI seaplane economy records Since never seen seaplane fly hull design derived previous record-holding models Brice Petersen Dale Reed bottom has no V flat except step shape may produce rougher ride V hull needs remarkably little power takeoff Plywood sheeting used bottom front hull balsa sheeting behind step An unusual feature fuselage hull sides top made open built-up struc biggest problems flying FAI records lining up required CD observers and/or timers once get folks give up day pressure fly abort due weather etc So wind bends grass stirs up choppy sea John Taliman hands over transmitter author restrains Shark its fin Power hybrid Diesel both mixture throttle servos SHARK Authors restarts Shark second try day previous landplane distance attempts Weber built 29 diesels Although tank remote managed record flight pressure 36 Model Aviation ture depends MonoKote cov ering strength during takeoff land ing fuselage contains 1976 Kraft radio SHARK SETS 2 MORE RECORDS September 2 after report completed Shark set anew closedcourse seaplane record 508 kilome ters 315565 miles same flight established new seaplane endur ance record 9 hrs 7 mm 37 sec 11-lb seaplane gross powered 29 diesel Six fuel economy rec ords four categories have set Weber date seaplane duration record broken twice exceeded ovn previous record landplane closed course distance twice Russian record intervening between Webers flights II 0 I FEET L/ 1 Breaking German-held seaplane duration record Record Shark forced down time 75623 system four servos Rudder ele vator servos well receiver reached through hatch between wing tail Mixture throttle servos under engine pylon three amperehour battery located nose has ade quate capacity 24 hours 7-foot wing span requires four-foot balsa sheets splices able obtain some excellent lightweight long Midwest wood tapered 1067 sq wing uses Clark Y airfoil increased 15% thickness 33% stab has 9% Clark Z Yes Virginia other Clark airfoils Clark Y lower profile flat beginning 30% behind leading edge Z begin ningat 15% Shark inboard wing halves cov ered transparent yellow blue MonoKote visibility against differing sky backgrounds outboard halves white reflect light spotlights planned use continue flying night Economical power supplied hy brid 40 diesel engine Having learned build 29 diesels landplane distance records expected little difficulty 40 However higher speed operation ne cessary water takeoff proved unsatisfactory Only after hours teststand experimentation engine modifi cation did behave well meantime bitten 13 stiwhes worth Con trary established tradition folklore engine pulls fuel suction 42 percent fuel December1977 37 2 remaining U Richard Weber Things deceivingly peaceful Shark passed old German record Transmitter charged auto battery right foreground Finding suitable water site tedious problem aerial photograph consulted Since radio sealed salt water avoided Although flat-bottomed hull gives rough ride takeoffs full load remarkably easy requiring surprisingly little power lift off wing airfoil Clark V increased 15% thickness stabilizer airfoil 9% Clark Z Two hours flight Concorde passed overhead Shark would still flying after jet reached Paris tanks located under Shark wing After Shark completed early year necessary choose seaplane record attempt first Two facts decisive Surpassing German duration record would produce econ omy record monopoly USA Also further duration experience should help later try landplane duration rec ord conceivable Shark could exceed landplane record Finding flying site proved un expected problem Because radio sealed compartment wanted avoid salt water Large freshwater lakes hard find Maryland Inquiries several RC fields hobby shops did uncover place seaplane models flown regularly beautiful four-acre farm pond found aerial photo graph farmer said no county policeman visiting flying field sug gested lake Bowie Md city fathers probably never seen radio-controlled model decided refuse permission Nearby rivers inaccessible banks low-flying aircraft too people Finally heard new lake Columbia Md ideal dura tion attempt June 3 dawned sunny cool windy official witnesses record tempt met about 830 am Lake Elkhorn Assisting CD Luther Jackson John Tallman Kenny Greenhouse PGRC Glenn Scillian DCRC Pre vious Shark test flights demonstrated Power Prop 11/6 could take ofT easily both empty carrying fourpound bottle water aboard engine completely reliable ticipated troublefree day After fueling up 84 fi oz weigh-in just under 11 pounds some photos digital watch es recorded start what expected long flight Thermal activity evident before 10 am times low throttle plus full down trim plus down pressure control stick necessary keep Shark sight again downdraft would demand full up trim much power stay above ground model high throttle cut back difficult hear engine During periods 50 minutes flight realized silence really meant engine stopped decision made land Shark ground would have wait wind blow ashore lake landing broke forward fuselage joint quick 38 Model Aviation Flying hours end much test pilots endurance aircraft Shielding eyes avoiding stiff neck Dick became prone pilot Note transmitter charger cord glue job some sticky MonoKote put us back business engine apparently stopped cause too lean Test flights used just four-ounce tank fuselage Now long fuel lines connecting two series tanks resistance caused overlean condition servo mixture control full rich Moral test complete configuration fore record attempt After refueling reweighing engine adjustments another flight tried takeoff near full throttle thing beauty soon after clearing dam engine died blind landing below dam would disastrous little alti tude airspeed much will power Shark turned around nursed back water landing Would engine con tinue misbehave day suction wrong approach fuel system concluded near full throttle en gine still going lean because long way down tanks full throttle really needed rather try ing adjust throttle mixture settings further third takeoff made half throttle Maintaining altitude never re quired smaller throttle opening provided better suction After two engine failures crew could relax fearing strike three next Time passed 115 over two hours after takeoff Concorde Dulles Airport flew overhead Someone remarked should still flying arrived Parisa fantastic thought thermals apply down elevator gingerly fear cooling engine too much dive downdrafts lots power needed stay above uneven terrain seemed like Continued page 90 December1977 39 tired happy crew after successful flight L B John Tailman Glen Scillian uuur iawaun ana UICK vycoer ur inc six IRI categories RC fuel economy Weber now holds threeprevious two landplane straight-line distance 266 miles closed-course distance 424 miles Weber 7-1/2-ft Shark Inboard wing halves covered transparent yellow blue Mon okote visibility against differing sky backgrounds Outboard halves white reflect light spot lights since planned fly night pic Carol Jean Weber others Kenny Greenhouse r Roger Edwards won 1976 Southwest Regionals two Guardians accompanying photos comparing two models can readily see differ ent shape vertical tail ab sence subrudders prototype Other differences less obvious can seen better drawings fuselages two aircraft very similar rest design went through some significant changes between prototype production aircraft horizontal tail area increased creasing span along some other minor changes shape vertical sta bilizer increased area changed shape wing span increased raising aspect ratio Sweep angle also changed slightly Slow-speed handling apparently problem prototype since changes aimed improving aspect performance addition larger tail surfaces flap span creased Fixed slots added forward ailerons spoilers installed improve roll response end result product review product review product review Raceplane Drawings Morrison Repla-Tech now sales outlet 85 Hirschs fabulous raceplane drawings Over 235 drawings fered Repla-Techs new raceplane catalog 25 cents Included models Wedell Williams Gee Bee Keith Rider Howard racers plus Morrison Repla-Toch 48500 McKenzie Hwy. Vida OR 97488 product review product review product review two airplanes similar appearance quite different detail XTB3F-25 much AF-25 rounded tail As model smaller tail flaps XTB3F-25 might cause slow-speed performance slightly worse AF-25 model just full-scale airplanes difference should very significant except very light mod els long nose would tend put balance point too far forward smaller tail Ron Duly flew XTB3F-2S models first place both Class Class II Nats performance potential later issues Ill cover some other less known carrier aircraft including car rier arm German Luftwaffe aircraft would particularly like see have questions concerning specific aircraft let know Richard L Perry 5016 ngelita Ave Dayton OH 45424 Shark Weber continued page 39 other always present transmitter battery kept charged connecting battery field box field box battery voltage began drop car battery pressed service new record surpass German mark 2% needed 62551 As duration approached grew appre hensive Would engine let us down now fuel holding out somewhat rich mixture long could glide necessary engine kept purring new record Now lets go broke take risks stretch record far possi ble thermals engine slowed bare tick-over mixture adjusted leaner An hour half later tac tics contributed sudden termination flight flying slowly 50 feet some trees beside lake left wingtip stalled Shark turned toward trees encouraged wind blowing way Hard right rudder little im mediate effect slow-flying plane desperation opened throttle blow air across rudder try clear tops trees engine im mediately died lean within two seconds Shark firmly ensnared 60 feet up tallest oak tree end record flight PROP SAFETY interest promoting safety following being published upon request Top Flite Models Inc Top Flite Models Inc has announced adoption Standards Instructions Warnings respect using propellers safely properly Standards carefully developed cooperation other propeller manufacturers model engine kit manufacturers others anticipated Instructions Warnings will adopted propeller manufacturers also engine kit equipment manu facturers Top Flite has purposely omitted copy right Instructions Warnings order segments industry volved propellers may freely use Standards Additionally Top Flite states copies Standards will available cost plus small handling charge inter ested manufacturer distributor dealer inclusion product distribution modelers INSTRUCTION AND WARNING SHEET Use Propellers Safely & Properly 1 Fo correct propeller size sod pitch follow advice engine manufacturer prop chart availahle frea dasler Top Flits 2 Install prop curved side facing Securely tighten propeller nut use correct wrench purpose 3 When starting engine hasp spectators away 20 feet out path rotating prop 4 Keep hands away prop much possihle use chicken stick device electric starter follow instructions supplied device 5 Keep face hody away path prop start run engine 6 Make engine adjustments hehind rotating prop 7 To stop engine cut off fuel sapply follow engine manufacturers directions Dont use hands fingers part hody Dont threw anything running engine 8 Discard props nicks scratches splits cracks sign wear damage Never repair alter shave hend propl Normal engine vihration can loosen prop inspect end retighten necessaryl Additional Precautions A Use safety glasses starting running angina B Dont run engine area loose gravel sand prop may throw such material face eyes C KEEP AWAY FROM PROP Loose clothingshirt sleeves ties scarfsor loose ohiects pencils screw drivers may fafl out shirt jacket pockets prop D Make certain glow plug dip connector secure will pop nff otherwise get intO reining prop E If spinner used certain its edges touch prop hlades Additional Special Warnings Instructions Nylon Propellers Nylon props affected hy amount moisture air will heceme hrittle hreak too dry Since amount moisture may vary greatly time manu facture follows 1 Boil propeller water 30 minutes hef ore first use Water should cover entire prop cover pat Let prop stay water until cool 2 You can add dye IRit etc water identify hoiled props against unhoiled 3 After use prop remove engine wrap meist cloth paper towel rag store water tight plastic hag 90 Model Aviation FINE QUALITY KITS AND ACCESSORIES 5 SCALE PLASTIC KITS FLYING MODEL ACCESSORIES SCALE PILOTS INE GUNS WHEELS & WHEEL PANTS ENGINE KITS & CYLINDERS SEND 501 FOR COMPLETE CATALOG 181 Dept MA PAWNEE STREET ILLIANS SAN MARCOS CALIFORNIA 9 ScALS DRAWINGS/I MORRISON1977 cATALOG 25$ ii TECH ENZIE HWY InternatIohe/ VIDA OREGON 97460 MR MODELER manufacture special ized accessories make R/C modeling easier never out stock items manufacture Seeyour deal er send first class stamp catalog sheets listing over 70 items complete pictures prices OVER 12 YEARS SERVICE WHEELS RO WHEELS Smooth inflatable wheels big airplanes Features two piece bolt gether hubs hub caps Wheels can inflated deflated thru tiny valve side tire pressure de sire Truly remark able realistic looking wheel I$795 Pair 450R4-1 /2 Diameter995 Pair SOOR 5 Diameter11 95 Pair 550R5-1 /2 Diameter1 395 Pair 600R ameter1 595 Pair Low bounce shock absorbing wheels featuring 6 spoke dura hub finest quality hand inspected 175Tor RWheels 1-3/4$219 Pair 200 T RWheels 2239 Pair 225 T R SWheels 2-1/4259 Pair 250 T R SWheels 2-1/2279 Pair 275 T R 5Wheels 2-3/4299 Pair 300 T R 5Wheels 3319 Pair 325 T RWheels 3-1 /4339 Pair 350 T RWheels 3-1/2359 Pair DUBRO PRODUCTS INCORPORATED 480 BONNER ROAD WAUCONDA ILL 60084 total duration 75623 Fortunately FAI Sporting Code states explicitly required seaplanes land water So new record record-setting plane tree top Glenn Scillian went get help friends area spied ropes holding up canopy ropes hatchet John Tallmans car plunged through poison ivy base plane-eating tree climbed tree attacked offending branches After long exhausting work Shark fell stages ground delighted find damage minimal Lots fuel left later measure ment showed 35 fi oz 42% origi nal fuel remained tanks enough additional 5 hours same rate fuel usage longer leaner mixture ligher model ever records made actual rather potential performance Surpassing German record 25% quite satis fying result Special thanks order official witnesses some took day va cation leave help Friday lake busy Particular recognition due invisible Kenny Greenhouse Long ago Kenny assigned role documenting record attempts camera have never picture record articles Thanks also Dean Smith Lee Shiflett supplied critical parts flight Record setting exciting re warding activity doesnt require weekly travel follow contest circuit yet can compete entire world Opti mizing element modelair frame engine fuel system other componentsis necessary succeed Originality needed since wont find standardized approaches seen nor mal competition Free flight neglected area USA has 27 outdoor free flight records nearly held eastern European countries Control line radio control also have room improved performances Lets get going Tow Signs/Layers continued page 50 remaining raw fabric edges aliphatic glue has thinned 50-50 water Coat just /8-in margin fab ric will effectively stop edges raveling yet leave letter flexi ble After glue dry remove letter board trim off excess thread rough fabric edges part stiffener extends beyond edge letter Leave connector pole extra long now Photo 14 shows steps forming connector end connector pole Notice letters square front corners must have fabric cut out slight ly area Slip two sequins place leaving 1/16 3/32 between Although hole sequins small can forced over bamboo easily shish kebab style scrap ply wood hole makes fine tool push trim off bamboo leaving about 1/32 projecting form good glue joint Now glue sequins place epoxy sure form complete fillet epoxy between bamboo sequin surfaces As form inboard fillet let epoxy cover joint between connector line thread connector pole reinforcement junction pole sequins thread must good strong since entire towing load concentrated point last step letter finished Slide split-shot weight place photo 14 squeeze tightly fastened over both connector line thread fabric Youll have trim fabric edge back little get weight right position shapes other characters vary illustrated construc tion principles same charac ter has connector pole front connector loops back strip bamboo stiffens edge lead ing edge character needs balance December1977 91 WHOLE NEW LINE OF SMOOTH INFLATABLE BIG WHEELS 4 4Y 5 51h& 6 TREAD T SMOOTH R SLICKS 5 2
Edition: Model Aviation - 1977/12
Page Numbers: 36, 37, 38, 39, 90, 91
THERE ARE six FAI world records radio-controlled models emphasize fuel economy spring 1977 five records resided USA Giertz Texas held landplane duration 1429 51 having taken record Japan held landplane straight-line distance 266 mi taken Italy closed-course Atta distance 424 mi n USSR Bowles California held seaplane straightline distance 135 mi iously also held USA Petersen West Virginia held seaplane closed-course distance 153 mi taken Germany remain ing economy record seaplane duration 61817 held Kaiser Germany September 1976 two attempts extend landplane duration record failed first ended after seven hours fuel pressure regulator gave out two thirds fuel still remaining tanks second attempt seriously damaged underpowered model stalled first slow turn after takeoff hard say day dis tressing decided work other records until reliability improved Shark designed FAI seaplane economy records Since never seen seaplane fly hull design derived previous record-holding models Brice Petersen Dale Reed bottom has no V flat except step shape may produce rougher ride V hull needs remarkably little power takeoff Plywood sheeting used bottom front hull balsa sheeting behind step An unusual feature fuselage hull sides top made open built-up struc biggest problems flying FAI records lining up required CD observers and/or timers once get folks give up day pressure fly abort due weather etc So wind bends grass stirs up choppy sea John Taliman hands over transmitter author restrains Shark its fin Power hybrid Diesel both mixture throttle servos SHARK Authors restarts Shark second try day previous landplane distance attempts Weber built 29 diesels Although tank remote managed record flight pressure 36 Model Aviation ture depends MonoKote cov ering strength during takeoff land ing fuselage contains 1976 Kraft radio SHARK SETS 2 MORE RECORDS September 2 after report completed Shark set anew closedcourse seaplane record 508 kilome ters 315565 miles same flight established new seaplane endur ance record 9 hrs 7 mm 37 sec 11-lb seaplane gross powered 29 diesel Six fuel economy rec ords four categories have set Weber date seaplane duration record broken twice exceeded ovn previous record landplane closed course distance twice Russian record intervening between Webers flights II 0 I FEET L/ 1 Breaking German-held seaplane duration record Record Shark forced down time 75623 system four servos Rudder ele vator servos well receiver reached through hatch between wing tail Mixture throttle servos under engine pylon three amperehour battery located nose has ade quate capacity 24 hours 7-foot wing span requires four-foot balsa sheets splices able obtain some excellent lightweight long Midwest wood tapered 1067 sq wing uses Clark Y airfoil increased 15% thickness 33% stab has 9% Clark Z Yes Virginia other Clark airfoils Clark Y lower profile flat beginning 30% behind leading edge Z begin ningat 15% Shark inboard wing halves cov ered transparent yellow blue MonoKote visibility against differing sky backgrounds outboard halves white reflect light spotlights planned use continue flying night Economical power supplied hy brid 40 diesel engine Having learned build 29 diesels landplane distance records expected little difficulty 40 However higher speed operation ne cessary water takeoff proved unsatisfactory Only after hours teststand experimentation engine modifi cation did behave well meantime bitten 13 stiwhes worth Con trary established tradition folklore engine pulls fuel suction 42 percent fuel December1977 37 2 remaining U Richard Weber Things deceivingly peaceful Shark passed old German record Transmitter charged auto battery right foreground Finding suitable water site tedious problem aerial photograph consulted Since radio sealed salt water avoided Although flat-bottomed hull gives rough ride takeoffs full load remarkably easy requiring surprisingly little power lift off wing airfoil Clark V increased 15% thickness stabilizer airfoil 9% Clark Z Two hours flight Concorde passed overhead Shark would still flying after jet reached Paris tanks located under Shark wing After Shark completed early year necessary choose seaplane record attempt first Two facts decisive Surpassing German duration record would produce econ omy record monopoly USA Also further duration experience should help later try landplane duration rec ord conceivable Shark could exceed landplane record Finding flying site proved un expected problem Because radio sealed compartment wanted avoid salt water Large freshwater lakes hard find Maryland Inquiries several RC fields hobby shops did uncover place seaplane models flown regularly beautiful four-acre farm pond found aerial photo graph farmer said no county policeman visiting flying field sug gested lake Bowie Md city fathers probably never seen radio-controlled model decided refuse permission Nearby rivers inaccessible banks low-flying aircraft too people Finally heard new lake Columbia Md ideal dura tion attempt June 3 dawned sunny cool windy official witnesses record tempt met about 830 am Lake Elkhorn Assisting CD Luther Jackson John Tallman Kenny Greenhouse PGRC Glenn Scillian DCRC Pre vious Shark test flights demonstrated Power Prop 11/6 could take ofT easily both empty carrying fourpound bottle water aboard engine completely reliable ticipated troublefree day After fueling up 84 fi oz weigh-in just under 11 pounds some photos digital watch es recorded start what expected long flight Thermal activity evident before 10 am times low throttle plus full down trim plus down pressure control stick necessary keep Shark sight again downdraft would demand full up trim much power stay above ground model high throttle cut back difficult hear engine During periods 50 minutes flight realized silence really meant engine stopped decision made land Shark ground would have wait wind blow ashore lake landing broke forward fuselage joint quick 38 Model Aviation Flying hours end much test pilots endurance aircraft Shielding eyes avoiding stiff neck Dick became prone pilot Note transmitter charger cord glue job some sticky MonoKote put us back business engine apparently stopped cause too lean Test flights used just four-ounce tank fuselage Now long fuel lines connecting two series tanks resistance caused overlean condition servo mixture control full rich Moral test complete configuration fore record attempt After refueling reweighing engine adjustments another flight tried takeoff near full throttle thing beauty soon after clearing dam engine died blind landing below dam would disastrous little alti tude airspeed much will power Shark turned around nursed back water landing Would engine con tinue misbehave day suction wrong approach fuel system concluded near full throttle en gine still going lean because long way down tanks full throttle really needed rather try ing adjust throttle mixture settings further third takeoff made half throttle Maintaining altitude never re quired smaller throttle opening provided better suction After two engine failures crew could relax fearing strike three next Time passed 115 over two hours after takeoff Concorde Dulles Airport flew overhead Someone remarked should still flying arrived Parisa fantastic thought thermals apply down elevator gingerly fear cooling engine too much dive downdrafts lots power needed stay above uneven terrain seemed like Continued page 90 December1977 39 tired happy crew after successful flight L B John Tailman Glen Scillian uuur iawaun ana UICK vycoer ur inc six IRI categories RC fuel economy Weber now holds threeprevious two landplane straight-line distance 266 miles closed-course distance 424 miles Weber 7-1/2-ft Shark Inboard wing halves covered transparent yellow blue Mon okote visibility against differing sky backgrounds Outboard halves white reflect light spot lights since planned fly night pic Carol Jean Weber others Kenny Greenhouse r Roger Edwards won 1976 Southwest Regionals two Guardians accompanying photos comparing two models can readily see differ ent shape vertical tail ab sence subrudders prototype Other differences less obvious can seen better drawings fuselages two aircraft very similar rest design went through some significant changes between prototype production aircraft horizontal tail area increased creasing span along some other minor changes shape vertical sta bilizer increased area changed shape wing span increased raising aspect ratio Sweep angle also changed slightly Slow-speed handling apparently problem prototype since changes aimed improving aspect performance addition larger tail surfaces flap span creased Fixed slots added forward ailerons spoilers installed improve roll response end result product review product review product review Raceplane Drawings Morrison Repla-Tech now sales outlet 85 Hirschs fabulous raceplane drawings Over 235 drawings fered Repla-Techs new raceplane catalog 25 cents Included models Wedell Williams Gee Bee Keith Rider Howard racers plus Morrison Repla-Toch 48500 McKenzie Hwy. Vida OR 97488 product review product review product review two airplanes similar appearance quite different detail XTB3F-25 much AF-25 rounded tail As model smaller tail flaps XTB3F-25 might cause slow-speed performance slightly worse AF-25 model just full-scale airplanes difference should very significant except very light mod els long nose would tend put balance point too far forward smaller tail Ron Duly flew XTB3F-2S models first place both Class Class II Nats performance potential later issues Ill cover some other less known carrier aircraft including car rier arm German Luftwaffe aircraft would particularly like see have questions concerning specific aircraft let know Richard L Perry 5016 ngelita Ave Dayton OH 45424 Shark Weber continued page 39 other always present transmitter battery kept charged connecting battery field box field box battery voltage began drop car battery pressed service new record surpass German mark 2% needed 62551 As duration approached grew appre hensive Would engine let us down now fuel holding out somewhat rich mixture long could glide necessary engine kept purring new record Now lets go broke take risks stretch record far possi ble thermals engine slowed bare tick-over mixture adjusted leaner An hour half later tac tics contributed sudden termination flight flying slowly 50 feet some trees beside lake left wingtip stalled Shark turned toward trees encouraged wind blowing way Hard right rudder little im mediate effect slow-flying plane desperation opened throttle blow air across rudder try clear tops trees engine im mediately died lean within two seconds Shark firmly ensnared 60 feet up tallest oak tree end record flight PROP SAFETY interest promoting safety following being published upon request Top Flite Models Inc Top Flite Models Inc has announced adoption Standards Instructions Warnings respect using propellers safely properly Standards carefully developed cooperation other propeller manufacturers model engine kit manufacturers others anticipated Instructions Warnings will adopted propeller manufacturers also engine kit equipment manu facturers Top Flite has purposely omitted copy right Instructions Warnings order segments industry volved propellers may freely use Standards Additionally Top Flite states copies Standards will available cost plus small handling charge inter ested manufacturer distributor dealer inclusion product distribution modelers INSTRUCTION AND WARNING SHEET Use Propellers Safely & Properly 1 Fo correct propeller size sod pitch follow advice engine manufacturer prop chart availahle frea dasler Top Flits 2 Install prop curved side facing Securely tighten propeller nut use correct wrench purpose 3 When starting engine hasp spectators away 20 feet out path rotating prop 4 Keep hands away prop much possihle use chicken stick device electric starter follow instructions supplied device 5 Keep face hody away path prop start run engine 6 Make engine adjustments hehind rotating prop 7 To stop engine cut off fuel sapply follow engine manufacturers directions Dont use hands fingers part hody Dont threw anything running engine 8 Discard props nicks scratches splits cracks sign wear damage Never repair alter shave hend propl Normal engine vihration can loosen prop inspect end retighten necessaryl Additional Precautions A Use safety glasses starting running angina B Dont run engine area loose gravel sand prop may throw such material face eyes C KEEP AWAY FROM PROP Loose clothingshirt sleeves ties scarfsor loose ohiects pencils screw drivers may fafl out shirt jacket pockets prop D Make certain glow plug dip connector secure will pop nff otherwise get intO reining prop E If spinner used certain its edges touch prop hlades Additional Special Warnings Instructions Nylon Propellers Nylon props affected hy amount moisture air will heceme hrittle hreak too dry Since amount moisture may vary greatly time manu facture follows 1 Boil propeller water 30 minutes hef ore first use Water should cover entire prop cover pat Let prop stay water until cool 2 You can add dye IRit etc water identify hoiled props against unhoiled 3 After use prop remove engine wrap meist cloth paper towel rag store water tight plastic hag 90 Model Aviation FINE QUALITY KITS AND ACCESSORIES 5 SCALE PLASTIC KITS FLYING MODEL ACCESSORIES SCALE PILOTS INE GUNS WHEELS & WHEEL PANTS ENGINE KITS & CYLINDERS SEND 501 FOR COMPLETE CATALOG 181 Dept MA PAWNEE STREET ILLIANS SAN MARCOS CALIFORNIA 9 ScALS DRAWINGS/I MORRISON1977 cATALOG 25$ ii TECH ENZIE HWY InternatIohe/ VIDA OREGON 97460 MR MODELER manufacture special ized accessories make R/C modeling easier never out stock items manufacture Seeyour deal er send first class stamp catalog sheets listing over 70 items complete pictures prices OVER 12 YEARS SERVICE WHEELS RO WHEELS Smooth inflatable wheels big airplanes Features two piece bolt gether hubs hub caps Wheels can inflated deflated thru tiny valve side tire pressure de sire Truly remark able realistic looking wheel I$795 Pair 450R4-1 /2 Diameter995 Pair SOOR 5 Diameter11 95 Pair 550R5-1 /2 Diameter1 395 Pair 600R ameter1 595 Pair Low bounce shock absorbing wheels featuring 6 spoke dura hub finest quality hand inspected 175Tor RWheels 1-3/4$219 Pair 200 T RWheels 2239 Pair 225 T R SWheels 2-1/4259 Pair 250 T R SWheels 2-1/2279 Pair 275 T R 5Wheels 2-3/4299 Pair 300 T R 5Wheels 3319 Pair 325 T RWheels 3-1 /4339 Pair 350 T RWheels 3-1/2359 Pair DUBRO PRODUCTS INCORPORATED 480 BONNER ROAD WAUCONDA ILL 60084 total duration 75623 Fortunately FAI Sporting Code states explicitly required seaplanes land water So new record record-setting plane tree top Glenn Scillian went get help friends area spied ropes holding up canopy ropes hatchet John Tallmans car plunged through poison ivy base plane-eating tree climbed tree attacked offending branches After long exhausting work Shark fell stages ground delighted find damage minimal Lots fuel left later measure ment showed 35 fi oz 42% origi nal fuel remained tanks enough additional 5 hours same rate fuel usage longer leaner mixture ligher model ever records made actual rather potential performance Surpassing German record 25% quite satis fying result Special thanks order official witnesses some took day va cation leave help Friday lake busy Particular recognition due invisible Kenny Greenhouse Long ago Kenny assigned role documenting record attempts camera have never picture record articles Thanks also Dean Smith Lee Shiflett supplied critical parts flight Record setting exciting re warding activity doesnt require weekly travel follow contest circuit yet can compete entire world Opti mizing element modelair frame engine fuel system other componentsis necessary succeed Originality needed since wont find standardized approaches seen nor mal competition Free flight neglected area USA has 27 outdoor free flight records nearly held eastern European countries Control line radio control also have room improved performances Lets get going Tow Signs/Layers continued page 50 remaining raw fabric edges aliphatic glue has thinned 50-50 water Coat just /8-in margin fab ric will effectively stop edges raveling yet leave letter flexi ble After glue dry remove letter board trim off excess thread rough fabric edges part stiffener extends beyond edge letter Leave connector pole extra long now Photo 14 shows steps forming connector end connector pole Notice letters square front corners must have fabric cut out slight ly area Slip two sequins place leaving 1/16 3/32 between Although hole sequins small can forced over bamboo easily shish kebab style scrap ply wood hole makes fine tool push trim off bamboo leaving about 1/32 projecting form good glue joint Now glue sequins place epoxy sure form complete fillet epoxy between bamboo sequin surfaces As form inboard fillet let epoxy cover joint between connector line thread connector pole reinforcement junction pole sequins thread must good strong since entire towing load concentrated point last step letter finished Slide split-shot weight place photo 14 squeeze tightly fastened over both connector line thread fabric Youll have trim fabric edge back little get weight right position shapes other characters vary illustrated construc tion principles same charac ter has connector pole front connector loops back strip bamboo stiffens edge lead ing edge character needs balance December1977 91 WHOLE NEW LINE OF SMOOTH INFLATABLE BIG WHEELS 4 4Y 5 51h& 6 TREAD T SMOOTH R SLICKS 5 2
Edition: Model Aviation - 1977/12
Page Numbers: 36, 37, 38, 39, 90, 91
THERE ARE six FAI world records radio-controlled models emphasize fuel economy spring 1977 five records resided USA Giertz Texas held landplane duration 1429 51 having taken record Japan held landplane straight-line distance 266 mi taken Italy closed-course Atta distance 424 mi n USSR Bowles California held seaplane straightline distance 135 mi iously also held USA Petersen West Virginia held seaplane closed-course distance 153 mi taken Germany remain ing economy record seaplane duration 61817 held Kaiser Germany September 1976 two attempts extend landplane duration record failed first ended after seven hours fuel pressure regulator gave out two thirds fuel still remaining tanks second attempt seriously damaged underpowered model stalled first slow turn after takeoff hard say day dis tressing decided work other records until reliability improved Shark designed FAI seaplane economy records Since never seen seaplane fly hull design derived previous record-holding models Brice Petersen Dale Reed bottom has no V flat except step shape may produce rougher ride V hull needs remarkably little power takeoff Plywood sheeting used bottom front hull balsa sheeting behind step An unusual feature fuselage hull sides top made open built-up struc biggest problems flying FAI records lining up required CD observers and/or timers once get folks give up day pressure fly abort due weather etc So wind bends grass stirs up choppy sea John Taliman hands over transmitter author restrains Shark its fin Power hybrid Diesel both mixture throttle servos SHARK Authors restarts Shark second try day previous landplane distance attempts Weber built 29 diesels Although tank remote managed record flight pressure 36 Model Aviation ture depends MonoKote cov ering strength during takeoff land ing fuselage contains 1976 Kraft radio SHARK SETS 2 MORE RECORDS September 2 after report completed Shark set anew closedcourse seaplane record 508 kilome ters 315565 miles same flight established new seaplane endur ance record 9 hrs 7 mm 37 sec 11-lb seaplane gross powered 29 diesel Six fuel economy rec ords four categories have set Weber date seaplane duration record broken twice exceeded ovn previous record landplane closed course distance twice Russian record intervening between Webers flights II 0 I FEET L/ 1 Breaking German-held seaplane duration record Record Shark forced down time 75623 system four servos Rudder ele vator servos well receiver reached through hatch between wing tail Mixture throttle servos under engine pylon three amperehour battery located nose has ade quate capacity 24 hours 7-foot wing span requires four-foot balsa sheets splices able obtain some excellent lightweight long Midwest wood tapered 1067 sq wing uses Clark Y airfoil increased 15% thickness 33% stab has 9% Clark Z Yes Virginia other Clark airfoils Clark Y lower profile flat beginning 30% behind leading edge Z begin ningat 15% Shark inboard wing halves cov ered transparent yellow blue MonoKote visibility against differing sky backgrounds outboard halves white reflect light spotlights planned use continue flying night Economical power supplied hy brid 40 diesel engine Having learned build 29 diesels landplane distance records expected little difficulty 40 However higher speed operation ne cessary water takeoff proved unsatisfactory Only after hours teststand experimentation engine modifi cation did behave well meantime bitten 13 stiwhes worth Con trary established tradition folklore engine pulls fuel suction 42 percent fuel December1977 37 2 remaining U Richard Weber Things deceivingly peaceful Shark passed old German record Transmitter charged auto battery right foreground Finding suitable water site tedious problem aerial photograph consulted Since radio sealed salt water avoided Although flat-bottomed hull gives rough ride takeoffs full load remarkably easy requiring surprisingly little power lift off wing airfoil Clark V increased 15% thickness stabilizer airfoil 9% Clark Z Two hours flight Concorde passed overhead Shark would still flying after jet reached Paris tanks located under Shark wing After Shark completed early year necessary choose seaplane record attempt first Two facts decisive Surpassing German duration record would produce econ omy record monopoly USA Also further duration experience should help later try landplane duration rec ord conceivable Shark could exceed landplane record Finding flying site proved un expected problem Because radio sealed compartment wanted avoid salt water Large freshwater lakes hard find Maryland Inquiries several RC fields hobby shops did uncover place seaplane models flown regularly beautiful four-acre farm pond found aerial photo graph farmer said no county policeman visiting flying field sug gested lake Bowie Md city fathers probably never seen radio-controlled model decided refuse permission Nearby rivers inaccessible banks low-flying aircraft too people Finally heard new lake Columbia Md ideal dura tion attempt June 3 dawned sunny cool windy official witnesses record tempt met about 830 am Lake Elkhorn Assisting CD Luther Jackson John Tallman Kenny Greenhouse PGRC Glenn Scillian DCRC Pre vious Shark test flights demonstrated Power Prop 11/6 could take ofT easily both empty carrying fourpound bottle water aboard engine completely reliable ticipated troublefree day After fueling up 84 fi oz weigh-in just under 11 pounds some photos digital watch es recorded start what expected long flight Thermal activity evident before 10 am times low throttle plus full down trim plus down pressure control stick necessary keep Shark sight again downdraft would demand full up trim much power stay above ground model high throttle cut back difficult hear engine During periods 50 minutes flight realized silence really meant engine stopped decision made land Shark ground would have wait wind blow ashore lake landing broke forward fuselage joint quick 38 Model Aviation Flying hours end much test pilots endurance aircraft Shielding eyes avoiding stiff neck Dick became prone pilot Note transmitter charger cord glue job some sticky MonoKote put us back business engine apparently stopped cause too lean Test flights used just four-ounce tank fuselage Now long fuel lines connecting two series tanks resistance caused overlean condition servo mixture control full rich Moral test complete configuration fore record attempt After refueling reweighing engine adjustments another flight tried takeoff near full throttle thing beauty soon after clearing dam engine died blind landing below dam would disastrous little alti tude airspeed much will power Shark turned around nursed back water landing Would engine con tinue misbehave day suction wrong approach fuel system concluded near full throttle en gine still going lean because long way down tanks full throttle really needed rather try ing adjust throttle mixture settings further third takeoff made half throttle Maintaining altitude never re quired smaller throttle opening provided better suction After two engine failures crew could relax fearing strike three next Time passed 115 over two hours after takeoff Concorde Dulles Airport flew overhead Someone remarked should still flying arrived Parisa fantastic thought thermals apply down elevator gingerly fear cooling engine too much dive downdrafts lots power needed stay above uneven terrain seemed like Continued page 90 December1977 39 tired happy crew after successful flight L B John Tailman Glen Scillian uuur iawaun ana UICK vycoer ur inc six IRI categories RC fuel economy Weber now holds threeprevious two landplane straight-line distance 266 miles closed-course distance 424 miles Weber 7-1/2-ft Shark Inboard wing halves covered transparent yellow blue Mon okote visibility against differing sky backgrounds Outboard halves white reflect light spot lights since planned fly night pic Carol Jean Weber others Kenny Greenhouse r Roger Edwards won 1976 Southwest Regionals two Guardians accompanying photos comparing two models can readily see differ ent shape vertical tail ab sence subrudders prototype Other differences less obvious can seen better drawings fuselages two aircraft very similar rest design went through some significant changes between prototype production aircraft horizontal tail area increased creasing span along some other minor changes shape vertical sta bilizer increased area changed shape wing span increased raising aspect ratio Sweep angle also changed slightly Slow-speed handling apparently problem prototype since changes aimed improving aspect performance addition larger tail surfaces flap span creased Fixed slots added forward ailerons spoilers installed improve roll response end result product review product review product review Raceplane Drawings Morrison Repla-Tech now sales outlet 85 Hirschs fabulous raceplane drawings Over 235 drawings fered Repla-Techs new raceplane catalog 25 cents Included models Wedell Williams Gee Bee Keith Rider Howard racers plus Morrison Repla-Toch 48500 McKenzie Hwy. Vida OR 97488 product review product review product review two airplanes similar appearance quite different detail XTB3F-25 much AF-25 rounded tail As model smaller tail flaps XTB3F-25 might cause slow-speed performance slightly worse AF-25 model just full-scale airplanes difference should very significant except very light mod els long nose would tend put balance point too far forward smaller tail Ron Duly flew XTB3F-2S models first place both Class Class II Nats performance potential later issues Ill cover some other less known carrier aircraft including car rier arm German Luftwaffe aircraft would particularly like see have questions concerning specific aircraft let know Richard L Perry 5016 ngelita Ave Dayton OH 45424 Shark Weber continued page 39 other always present transmitter battery kept charged connecting battery field box field box battery voltage began drop car battery pressed service new record surpass German mark 2% needed 62551 As duration approached grew appre hensive Would engine let us down now fuel holding out somewhat rich mixture long could glide necessary engine kept purring new record Now lets go broke take risks stretch record far possi ble thermals engine slowed bare tick-over mixture adjusted leaner An hour half later tac tics contributed sudden termination flight flying slowly 50 feet some trees beside lake left wingtip stalled Shark turned toward trees encouraged wind blowing way Hard right rudder little im mediate effect slow-flying plane desperation opened throttle blow air across rudder try clear tops trees engine im mediately died lean within two seconds Shark firmly ensnared 60 feet up tallest oak tree end record flight PROP SAFETY interest promoting safety following being published upon request Top Flite Models Inc Top Flite Models Inc has announced adoption Standards Instructions Warnings respect using propellers safely properly Standards carefully developed cooperation other propeller manufacturers model engine kit manufacturers others anticipated Instructions Warnings will adopted propeller manufacturers also engine kit equipment manu facturers Top Flite has purposely omitted copy right Instructions Warnings order segments industry volved propellers may freely use Standards Additionally Top Flite states copies Standards will available cost plus small handling charge inter ested manufacturer distributor dealer inclusion product distribution modelers INSTRUCTION AND WARNING SHEET Use Propellers Safely & Properly 1 Fo correct propeller size sod pitch follow advice engine manufacturer prop chart availahle frea dasler Top Flits 2 Install prop curved side facing Securely tighten propeller nut use correct wrench purpose 3 When starting engine hasp spectators away 20 feet out path rotating prop 4 Keep hands away prop much possihle use chicken stick device electric starter follow instructions supplied device 5 Keep face hody away path prop start run engine 6 Make engine adjustments hehind rotating prop 7 To stop engine cut off fuel sapply follow engine manufacturers directions Dont use hands fingers part hody Dont threw anything running engine 8 Discard props nicks scratches splits cracks sign wear damage Never repair alter shave hend propl Normal engine vihration can loosen prop inspect end retighten necessaryl Additional Precautions A Use safety glasses starting running angina B Dont run engine area loose gravel sand prop may throw such material face eyes C KEEP AWAY FROM PROP Loose clothingshirt sleeves ties scarfsor loose ohiects pencils screw drivers may fafl out shirt jacket pockets prop D Make certain glow plug dip connector secure will pop nff otherwise get intO reining prop E If spinner used certain its edges touch prop hlades Additional Special Warnings Instructions Nylon Propellers Nylon props affected hy amount moisture air will heceme hrittle hreak too dry Since amount moisture may vary greatly time manu facture follows 1 Boil propeller water 30 minutes hef ore first use Water should cover entire prop cover pat Let prop stay water until cool 2 You can add dye IRit etc water identify hoiled props against unhoiled 3 After use prop remove engine wrap meist cloth paper towel rag store water tight plastic hag 90 Model Aviation FINE QUALITY KITS AND ACCESSORIES 5 SCALE PLASTIC KITS FLYING MODEL ACCESSORIES SCALE PILOTS INE GUNS WHEELS & WHEEL PANTS ENGINE KITS & CYLINDERS SEND 501 FOR COMPLETE CATALOG 181 Dept MA PAWNEE STREET ILLIANS SAN MARCOS CALIFORNIA 9 ScALS DRAWINGS/I MORRISON1977 cATALOG 25$ ii TECH ENZIE HWY InternatIohe/ VIDA OREGON 97460 MR MODELER manufacture special ized accessories make R/C modeling easier never out stock items manufacture Seeyour deal er send first class stamp catalog sheets listing over 70 items complete pictures prices OVER 12 YEARS SERVICE WHEELS RO WHEELS Smooth inflatable wheels big airplanes Features two piece bolt gether hubs hub caps Wheels can inflated deflated thru tiny valve side tire pressure de sire Truly remark able realistic looking wheel I$795 Pair 450R4-1 /2 Diameter995 Pair SOOR 5 Diameter11 95 Pair 550R5-1 /2 Diameter1 395 Pair 600R ameter1 595 Pair Low bounce shock absorbing wheels featuring 6 spoke dura hub finest quality hand inspected 175Tor RWheels 1-3/4$219 Pair 200 T RWheels 2239 Pair 225 T R SWheels 2-1/4259 Pair 250 T R SWheels 2-1/2279 Pair 275 T R 5Wheels 2-3/4299 Pair 300 T R 5Wheels 3319 Pair 325 T RWheels 3-1 /4339 Pair 350 T RWheels 3-1/2359 Pair DUBRO PRODUCTS INCORPORATED 480 BONNER ROAD WAUCONDA ILL 60084 total duration 75623 Fortunately FAI Sporting Code states explicitly required seaplanes land water So new record record-setting plane tree top Glenn Scillian went get help friends area spied ropes holding up canopy ropes hatchet John Tallmans car plunged through poison ivy base plane-eating tree climbed tree attacked offending branches After long exhausting work Shark fell stages ground delighted find damage minimal Lots fuel left later measure ment showed 35 fi oz 42% origi nal fuel remained tanks enough additional 5 hours same rate fuel usage longer leaner mixture ligher model ever records made actual rather potential performance Surpassing German record 25% quite satis fying result Special thanks order official witnesses some took day va cation leave help Friday lake busy Particular recognition due invisible Kenny Greenhouse Long ago Kenny assigned role documenting record attempts camera have never picture record articles Thanks also Dean Smith Lee Shiflett supplied critical parts flight Record setting exciting re warding activity doesnt require weekly travel follow contest circuit yet can compete entire world Opti mizing element modelair frame engine fuel system other componentsis necessary succeed Originality needed since wont find standardized approaches seen nor mal competition Free flight neglected area USA has 27 outdoor free flight records nearly held eastern European countries Control line radio control also have room improved performances Lets get going Tow Signs/Layers continued page 50 remaining raw fabric edges aliphatic glue has thinned 50-50 water Coat just /8-in margin fab ric will effectively stop edges raveling yet leave letter flexi ble After glue dry remove letter board trim off excess thread rough fabric edges part stiffener extends beyond edge letter Leave connector pole extra long now Photo 14 shows steps forming connector end connector pole Notice letters square front corners must have fabric cut out slight ly area Slip two sequins place leaving 1/16 3/32 between Although hole sequins small can forced over bamboo easily shish kebab style scrap ply wood hole makes fine tool push trim off bamboo leaving about 1/32 projecting form good glue joint Now glue sequins place epoxy sure form complete fillet epoxy between bamboo sequin surfaces As form inboard fillet let epoxy cover joint between connector line thread connector pole reinforcement junction pole sequins thread must good strong since entire towing load concentrated point last step letter finished Slide split-shot weight place photo 14 squeeze tightly fastened over both connector line thread fabric Youll have trim fabric edge back little get weight right position shapes other characters vary illustrated construc tion principles same charac ter has connector pole front connector loops back strip bamboo stiffens edge lead ing edge character needs balance December1977 91 WHOLE NEW LINE OF SMOOTH INFLATABLE BIG WHEELS 4 4Y 5 51h& 6 TREAD T SMOOTH R SLICKS 5 2
Edition: Model Aviation - 1977/12
Page Numbers: 36, 37, 38, 39, 90, 91
THERE ARE six FAI world records radio-controlled models emphasize fuel economy spring 1977 five records resided USA Giertz Texas held landplane duration 1429 51 having taken record Japan held landplane straight-line distance 266 mi taken Italy closed-course Atta distance 424 mi n USSR Bowles California held seaplane straightline distance 135 mi iously also held USA Petersen West Virginia held seaplane closed-course distance 153 mi taken Germany remain ing economy record seaplane duration 61817 held Kaiser Germany September 1976 two attempts extend landplane duration record failed first ended after seven hours fuel pressure regulator gave out two thirds fuel still remaining tanks second attempt seriously damaged underpowered model stalled first slow turn after takeoff hard say day dis tressing decided work other records until reliability improved Shark designed FAI seaplane economy records Since never seen seaplane fly hull design derived previous record-holding models Brice Petersen Dale Reed bottom has no V flat except step shape may produce rougher ride V hull needs remarkably little power takeoff Plywood sheeting used bottom front hull balsa sheeting behind step An unusual feature fuselage hull sides top made open built-up struc biggest problems flying FAI records lining up required CD observers and/or timers once get folks give up day pressure fly abort due weather etc So wind bends grass stirs up choppy sea John Taliman hands over transmitter author restrains Shark its fin Power hybrid Diesel both mixture throttle servos SHARK Authors restarts Shark second try day previous landplane distance attempts Weber built 29 diesels Although tank remote managed record flight pressure 36 Model Aviation ture depends MonoKote cov ering strength during takeoff land ing fuselage contains 1976 Kraft radio SHARK SETS 2 MORE RECORDS September 2 after report completed Shark set anew closedcourse seaplane record 508 kilome ters 315565 miles same flight established new seaplane endur ance record 9 hrs 7 mm 37 sec 11-lb seaplane gross powered 29 diesel Six fuel economy rec ords four categories have set Weber date seaplane duration record broken twice exceeded ovn previous record landplane closed course distance twice Russian record intervening between Webers flights II 0 I FEET L/ 1 Breaking German-held seaplane duration record Record Shark forced down time 75623 system four servos Rudder ele vator servos well receiver reached through hatch between wing tail Mixture throttle servos under engine pylon three amperehour battery located nose has ade quate capacity 24 hours 7-foot wing span requires four-foot balsa sheets splices able obtain some excellent lightweight long Midwest wood tapered 1067 sq wing uses Clark Y airfoil increased 15% thickness 33% stab has 9% Clark Z Yes Virginia other Clark airfoils Clark Y lower profile flat beginning 30% behind leading edge Z begin ningat 15% Shark inboard wing halves cov ered transparent yellow blue MonoKote visibility against differing sky backgrounds outboard halves white reflect light spotlights planned use continue flying night Economical power supplied hy brid 40 diesel engine Having learned build 29 diesels landplane distance records expected little difficulty 40 However higher speed operation ne cessary water takeoff proved unsatisfactory Only after hours teststand experimentation engine modifi cation did behave well meantime bitten 13 stiwhes worth Con trary established tradition folklore engine pulls fuel suction 42 percent fuel December1977 37 2 remaining U Richard Weber Things deceivingly peaceful Shark passed old German record Transmitter charged auto battery right foreground Finding suitable water site tedious problem aerial photograph consulted Since radio sealed salt water avoided Although flat-bottomed hull gives rough ride takeoffs full load remarkably easy requiring surprisingly little power lift off wing airfoil Clark V increased 15% thickness stabilizer airfoil 9% Clark Z Two hours flight Concorde passed overhead Shark would still flying after jet reached Paris tanks located under Shark wing After Shark completed early year necessary choose seaplane record attempt first Two facts decisive Surpassing German duration record would produce econ omy record monopoly USA Also further duration experience should help later try landplane duration rec ord conceivable Shark could exceed landplane record Finding flying site proved un expected problem Because radio sealed compartment wanted avoid salt water Large freshwater lakes hard find Maryland Inquiries several RC fields hobby shops did uncover place seaplane models flown regularly beautiful four-acre farm pond found aerial photo graph farmer said no county policeman visiting flying field sug gested lake Bowie Md city fathers probably never seen radio-controlled model decided refuse permission Nearby rivers inaccessible banks low-flying aircraft too people Finally heard new lake Columbia Md ideal dura tion attempt June 3 dawned sunny cool windy official witnesses record tempt met about 830 am Lake Elkhorn Assisting CD Luther Jackson John Tallman Kenny Greenhouse PGRC Glenn Scillian DCRC Pre vious Shark test flights demonstrated Power Prop 11/6 could take ofT easily both empty carrying fourpound bottle water aboard engine completely reliable ticipated troublefree day After fueling up 84 fi oz weigh-in just under 11 pounds some photos digital watch es recorded start what expected long flight Thermal activity evident before 10 am times low throttle plus full down trim plus down pressure control stick necessary keep Shark sight again downdraft would demand full up trim much power stay above ground model high throttle cut back difficult hear engine During periods 50 minutes flight realized silence really meant engine stopped decision made land Shark ground would have wait wind blow ashore lake landing broke forward fuselage joint quick 38 Model Aviation Flying hours end much test pilots endurance aircraft Shielding eyes avoiding stiff neck Dick became prone pilot Note transmitter charger cord glue job some sticky MonoKote put us back business engine apparently stopped cause too lean Test flights used just four-ounce tank fuselage Now long fuel lines connecting two series tanks resistance caused overlean condition servo mixture control full rich Moral test complete configuration fore record attempt After refueling reweighing engine adjustments another flight tried takeoff near full throttle thing beauty soon after clearing dam engine died blind landing below dam would disastrous little alti tude airspeed much will power Shark turned around nursed back water landing Would engine con tinue misbehave day suction wrong approach fuel system concluded near full throttle en gine still going lean because long way down tanks full throttle really needed rather try ing adjust throttle mixture settings further third takeoff made half throttle Maintaining altitude never re quired smaller throttle opening provided better suction After two engine failures crew could relax fearing strike three next Time passed 115 over two hours after takeoff Concorde Dulles Airport flew overhead Someone remarked should still flying arrived Parisa fantastic thought thermals apply down elevator gingerly fear cooling engine too much dive downdrafts lots power needed stay above uneven terrain seemed like Continued page 90 December1977 39 tired happy crew after successful flight L B John Tailman Glen Scillian uuur iawaun ana UICK vycoer ur inc six IRI categories RC fuel economy Weber now holds threeprevious two landplane straight-line distance 266 miles closed-course distance 424 miles Weber 7-1/2-ft Shark Inboard wing halves covered transparent yellow blue Mon okote visibility against differing sky backgrounds Outboard halves white reflect light spot lights since planned fly night pic Carol Jean Weber others Kenny Greenhouse r Roger Edwards won 1976 Southwest Regionals two Guardians accompanying photos comparing two models can readily see differ ent shape vertical tail ab sence subrudders prototype Other differences less obvious can seen better drawings fuselages two aircraft very similar rest design went through some significant changes between prototype production aircraft horizontal tail area increased creasing span along some other minor changes shape vertical sta bilizer increased area changed shape wing span increased raising aspect ratio Sweep angle also changed slightly Slow-speed handling apparently problem prototype since changes aimed improving aspect performance addition larger tail surfaces flap span creased Fixed slots added forward ailerons spoilers installed improve roll response end result product review product review product review Raceplane Drawings Morrison Repla-Tech now sales outlet 85 Hirschs fabulous raceplane drawings Over 235 drawings fered Repla-Techs new raceplane catalog 25 cents Included models Wedell Williams Gee Bee Keith Rider Howard racers plus Morrison Repla-Toch 48500 McKenzie Hwy. Vida OR 97488 product review product review product review two airplanes similar appearance quite different detail XTB3F-25 much AF-25 rounded tail As model smaller tail flaps XTB3F-25 might cause slow-speed performance slightly worse AF-25 model just full-scale airplanes difference should very significant except very light mod els long nose would tend put balance point too far forward smaller tail Ron Duly flew XTB3F-2S models first place both Class Class II Nats performance potential later issues Ill cover some other less known carrier aircraft including car rier arm German Luftwaffe aircraft would particularly like see have questions concerning specific aircraft let know Richard L Perry 5016 ngelita Ave Dayton OH 45424 Shark Weber continued page 39 other always present transmitter battery kept charged connecting battery field box field box battery voltage began drop car battery pressed service new record surpass German mark 2% needed 62551 As duration approached grew appre hensive Would engine let us down now fuel holding out somewhat rich mixture long could glide necessary engine kept purring new record Now lets go broke take risks stretch record far possi ble thermals engine slowed bare tick-over mixture adjusted leaner An hour half later tac tics contributed sudden termination flight flying slowly 50 feet some trees beside lake left wingtip stalled Shark turned toward trees encouraged wind blowing way Hard right rudder little im mediate effect slow-flying plane desperation opened throttle blow air across rudder try clear tops trees engine im mediately died lean within two seconds Shark firmly ensnared 60 feet up tallest oak tree end record flight PROP SAFETY interest promoting safety following being published upon request Top Flite Models Inc Top Flite Models Inc has announced adoption Standards Instructions Warnings respect using propellers safely properly Standards carefully developed cooperation other propeller manufacturers model engine kit manufacturers others anticipated Instructions Warnings will adopted propeller manufacturers also engine kit equipment manu facturers Top Flite has purposely omitted copy right Instructions Warnings order segments industry volved propellers may freely use Standards Additionally Top Flite states copies Standards will available cost plus small handling charge inter ested manufacturer distributor dealer inclusion product distribution modelers INSTRUCTION AND WARNING SHEET Use Propellers Safely & Properly 1 Fo correct propeller size sod pitch follow advice engine manufacturer prop chart availahle frea dasler Top Flits 2 Install prop curved side facing Securely tighten propeller nut use correct wrench purpose 3 When starting engine hasp spectators away 20 feet out path rotating prop 4 Keep hands away prop much possihle use chicken stick device electric starter follow instructions supplied device 5 Keep face hody away path prop start run engine 6 Make engine adjustments hehind rotating prop 7 To stop engine cut off fuel sapply follow engine manufacturers directions Dont use hands fingers part hody Dont threw anything running engine 8 Discard props nicks scratches splits cracks sign wear damage Never repair alter shave hend propl Normal engine vihration can loosen prop inspect end retighten necessaryl Additional Precautions A Use safety glasses starting running angina B Dont run engine area loose gravel sand prop may throw such material face eyes C KEEP AWAY FROM PROP Loose clothingshirt sleeves ties scarfsor loose ohiects pencils screw drivers may fafl out shirt jacket pockets prop D Make certain glow plug dip connector secure will pop nff otherwise get intO reining prop E If spinner used certain its edges touch prop hlades Additional Special Warnings Instructions Nylon Propellers Nylon props affected hy amount moisture air will heceme hrittle hreak too dry Since amount moisture may vary greatly time manu facture follows 1 Boil propeller water 30 minutes hef ore first use Water should cover entire prop cover pat Let prop stay water until cool 2 You can add dye IRit etc water identify hoiled props against unhoiled 3 After use prop remove engine wrap meist cloth paper towel rag store water tight plastic hag 90 Model Aviation FINE QUALITY KITS AND ACCESSORIES 5 SCALE PLASTIC KITS FLYING MODEL ACCESSORIES SCALE PILOTS INE GUNS WHEELS & WHEEL PANTS ENGINE KITS & CYLINDERS SEND 501 FOR COMPLETE CATALOG 181 Dept MA PAWNEE STREET ILLIANS SAN MARCOS CALIFORNIA 9 ScALS DRAWINGS/I MORRISON1977 cATALOG 25$ ii TECH ENZIE HWY InternatIohe/ VIDA OREGON 97460 MR MODELER manufacture special ized accessories make R/C modeling easier never out stock items manufacture Seeyour deal er send first class stamp catalog sheets listing over 70 items complete pictures prices OVER 12 YEARS SERVICE WHEELS RO WHEELS Smooth inflatable wheels big airplanes Features two piece bolt gether hubs hub caps Wheels can inflated deflated thru tiny valve side tire pressure de sire Truly remark able realistic looking wheel I$795 Pair 450R4-1 /2 Diameter995 Pair SOOR 5 Diameter11 95 Pair 550R5-1 /2 Diameter1 395 Pair 600R ameter1 595 Pair Low bounce shock absorbing wheels featuring 6 spoke dura hub finest quality hand inspected 175Tor RWheels 1-3/4$219 Pair 200 T RWheels 2239 Pair 225 T R SWheels 2-1/4259 Pair 250 T R SWheels 2-1/2279 Pair 275 T R 5Wheels 2-3/4299 Pair 300 T R 5Wheels 3319 Pair 325 T RWheels 3-1 /4339 Pair 350 T RWheels 3-1/2359 Pair DUBRO PRODUCTS INCORPORATED 480 BONNER ROAD WAUCONDA ILL 60084 total duration 75623 Fortunately FAI Sporting Code states explicitly required seaplanes land water So new record record-setting plane tree top Glenn Scillian went get help friends area spied ropes holding up canopy ropes hatchet John Tallmans car plunged through poison ivy base plane-eating tree climbed tree attacked offending branches After long exhausting work Shark fell stages ground delighted find damage minimal Lots fuel left later measure ment showed 35 fi oz 42% origi nal fuel remained tanks enough additional 5 hours same rate fuel usage longer leaner mixture ligher model ever records made actual rather potential performance Surpassing German record 25% quite satis fying result Special thanks order official witnesses some took day va cation leave help Friday lake busy Particular recognition due invisible Kenny Greenhouse Long ago Kenny assigned role documenting record attempts camera have never picture record articles Thanks also Dean Smith Lee Shiflett supplied critical parts flight Record setting exciting re warding activity doesnt require weekly travel follow contest circuit yet can compete entire world Opti mizing element modelair frame engine fuel system other componentsis necessary succeed Originality needed since wont find standardized approaches seen nor mal competition Free flight neglected area USA has 27 outdoor free flight records nearly held eastern European countries Control line radio control also have room improved performances Lets get going Tow Signs/Layers continued page 50 remaining raw fabric edges aliphatic glue has thinned 50-50 water Coat just /8-in margin fab ric will effectively stop edges raveling yet leave letter flexi ble After glue dry remove letter board trim off excess thread rough fabric edges part stiffener extends beyond edge letter Leave connector pole extra long now Photo 14 shows steps forming connector end connector pole Notice letters square front corners must have fabric cut out slight ly area Slip two sequins place leaving 1/16 3/32 between Although hole sequins small can forced over bamboo easily shish kebab style scrap ply wood hole makes fine tool push trim off bamboo leaving about 1/32 projecting form good glue joint Now glue sequins place epoxy sure form complete fillet epoxy between bamboo sequin surfaces As form inboard fillet let epoxy cover joint between connector line thread connector pole reinforcement junction pole sequins thread must good strong since entire towing load concentrated point last step letter finished Slide split-shot weight place photo 14 squeeze tightly fastened over both connector line thread fabric Youll have trim fabric edge back little get weight right position shapes other characters vary illustrated construc tion principles same charac ter has connector pole front connector loops back strip bamboo stiffens edge lead ing edge character needs balance December1977 91 WHOLE NEW LINE OF SMOOTH INFLATABLE BIG WHEELS 4 4Y 5 51h& 6 TREAD T SMOOTH R SLICKS 5 2
Edition: Model Aviation - 1977/12
Page Numbers: 36, 37, 38, 39, 90, 91
THERE ARE six FAI world records radio-controlled models emphasize fuel economy spring 1977 five records resided USA Giertz Texas held landplane duration 1429 51 having taken record Japan held landplane straight-line distance 266 mi taken Italy closed-course Atta distance 424 mi n USSR Bowles California held seaplane straightline distance 135 mi iously also held USA Petersen West Virginia held seaplane closed-course distance 153 mi taken Germany remain ing economy record seaplane duration 61817 held Kaiser Germany September 1976 two attempts extend landplane duration record failed first ended after seven hours fuel pressure regulator gave out two thirds fuel still remaining tanks second attempt seriously damaged underpowered model stalled first slow turn after takeoff hard say day dis tressing decided work other records until reliability improved Shark designed FAI seaplane economy records Since never seen seaplane fly hull design derived previous record-holding models Brice Petersen Dale Reed bottom has no V flat except step shape may produce rougher ride V hull needs remarkably little power takeoff Plywood sheeting used bottom front hull balsa sheeting behind step An unusual feature fuselage hull sides top made open built-up struc biggest problems flying FAI records lining up required CD observers and/or timers once get folks give up day pressure fly abort due weather etc So wind bends grass stirs up choppy sea John Taliman hands over transmitter author restrains Shark its fin Power hybrid Diesel both mixture throttle servos SHARK Authors restarts Shark second try day previous landplane distance attempts Weber built 29 diesels Although tank remote managed record flight pressure 36 Model Aviation ture depends MonoKote cov ering strength during takeoff land ing fuselage contains 1976 Kraft radio SHARK SETS 2 MORE RECORDS September 2 after report completed Shark set anew closedcourse seaplane record 508 kilome ters 315565 miles same flight established new seaplane endur ance record 9 hrs 7 mm 37 sec 11-lb seaplane gross powered 29 diesel Six fuel economy rec ords four categories have set Weber date seaplane duration record broken twice exceeded ovn previous record landplane closed course distance twice Russian record intervening between Webers flights II 0 I FEET L/ 1 Breaking German-held seaplane duration record Record Shark forced down time 75623 system four servos Rudder ele vator servos well receiver reached through hatch between wing tail Mixture throttle servos under engine pylon three amperehour battery located nose has ade quate capacity 24 hours 7-foot wing span requires four-foot balsa sheets splices able obtain some excellent lightweight long Midwest wood tapered 1067 sq wing uses Clark Y airfoil increased 15% thickness 33% stab has 9% Clark Z Yes Virginia other Clark airfoils Clark Y lower profile flat beginning 30% behind leading edge Z begin ningat 15% Shark inboard wing halves cov ered transparent yellow blue MonoKote visibility against differing sky backgrounds outboard halves white reflect light spotlights planned use continue flying night Economical power supplied hy brid 40 diesel engine Having learned build 29 diesels landplane distance records expected little difficulty 40 However higher speed operation ne cessary water takeoff proved unsatisfactory Only after hours teststand experimentation engine modifi cation did behave well meantime bitten 13 stiwhes worth Con trary established tradition folklore engine pulls fuel suction 42 percent fuel December1977 37 2 remaining U Richard Weber Things deceivingly peaceful Shark passed old German record Transmitter charged auto battery right foreground Finding suitable water site tedious problem aerial photograph consulted Since radio sealed salt water avoided Although flat-bottomed hull gives rough ride takeoffs full load remarkably easy requiring surprisingly little power lift off wing airfoil Clark V increased 15% thickness stabilizer airfoil 9% Clark Z Two hours flight Concorde passed overhead Shark would still flying after jet reached Paris tanks located under Shark wing After Shark completed early year necessary choose seaplane record attempt first Two facts decisive Surpassing German duration record would produce econ omy record monopoly USA Also further duration experience should help later try landplane duration rec ord conceivable Shark could exceed landplane record Finding flying site proved un expected problem Because radio sealed compartment wanted avoid salt water Large freshwater lakes hard find Maryland Inquiries several RC fields hobby shops did uncover place seaplane models flown regularly beautiful four-acre farm pond found aerial photo graph farmer said no county policeman visiting flying field sug gested lake Bowie Md city fathers probably never seen radio-controlled model decided refuse permission Nearby rivers inaccessible banks low-flying aircraft too people Finally heard new lake Columbia Md ideal dura tion attempt June 3 dawned sunny cool windy official witnesses record tempt met about 830 am Lake Elkhorn Assisting CD Luther Jackson John Tallman Kenny Greenhouse PGRC Glenn Scillian DCRC Pre vious Shark test flights demonstrated Power Prop 11/6 could take ofT easily both empty carrying fourpound bottle water aboard engine completely reliable ticipated troublefree day After fueling up 84 fi oz weigh-in just under 11 pounds some photos digital watch es recorded start what expected long flight Thermal activity evident before 10 am times low throttle plus full down trim plus down pressure control stick necessary keep Shark sight again downdraft would demand full up trim much power stay above ground model high throttle cut back difficult hear engine During periods 50 minutes flight realized silence really meant engine stopped decision made land Shark ground would have wait wind blow ashore lake landing broke forward fuselage joint quick 38 Model Aviation Flying hours end much test pilots endurance aircraft Shielding eyes avoiding stiff neck Dick became prone pilot Note transmitter charger cord glue job some sticky MonoKote put us back business engine apparently stopped cause too lean Test flights used just four-ounce tank fuselage Now long fuel lines connecting two series tanks resistance caused overlean condition servo mixture control full rich Moral test complete configuration fore record attempt After refueling reweighing engine adjustments another flight tried takeoff near full throttle thing beauty soon after clearing dam engine died blind landing below dam would disastrous little alti tude airspeed much will power Shark turned around nursed back water landing Would engine con tinue misbehave day suction wrong approach fuel system concluded near full throttle en gine still going lean because long way down tanks full throttle really needed rather try ing adjust throttle mixture settings further third takeoff made half throttle Maintaining altitude never re quired smaller throttle opening provided better suction After two engine failures crew could relax fearing strike three next Time passed 115 over two hours after takeoff Concorde Dulles Airport flew overhead Someone remarked should still flying arrived Parisa fantastic thought thermals apply down elevator gingerly fear cooling engine too much dive downdrafts lots power needed stay above uneven terrain seemed like Continued page 90 December1977 39 tired happy crew after successful flight L B John Tailman Glen Scillian uuur iawaun ana UICK vycoer ur inc six IRI categories RC fuel economy Weber now holds threeprevious two landplane straight-line distance 266 miles closed-course distance 424 miles Weber 7-1/2-ft Shark Inboard wing halves covered transparent yellow blue Mon okote visibility against differing sky backgrounds Outboard halves white reflect light spot lights since planned fly night pic Carol Jean Weber others Kenny Greenhouse r Roger Edwards won 1976 Southwest Regionals two Guardians accompanying photos comparing two models can readily see differ ent shape vertical tail ab sence subrudders prototype Other differences less obvious can seen better drawings fuselages two aircraft very similar rest design went through some significant changes between prototype production aircraft horizontal tail area increased creasing span along some other minor changes shape vertical sta bilizer increased area changed shape wing span increased raising aspect ratio Sweep angle also changed slightly Slow-speed handling apparently problem prototype since changes aimed improving aspect performance addition larger tail surfaces flap span creased Fixed slots added forward ailerons spoilers installed improve roll response end result product review product review product review Raceplane Drawings Morrison Repla-Tech now sales outlet 85 Hirschs fabulous raceplane drawings Over 235 drawings fered Repla-Techs new raceplane catalog 25 cents Included models Wedell Williams Gee Bee Keith Rider Howard racers plus Morrison Repla-Toch 48500 McKenzie Hwy. Vida OR 97488 product review product review product review two airplanes similar appearance quite different detail XTB3F-25 much AF-25 rounded tail As model smaller tail flaps XTB3F-25 might cause slow-speed performance slightly worse AF-25 model just full-scale airplanes difference should very significant except very light mod els long nose would tend put balance point too far forward smaller tail Ron Duly flew XTB3F-2S models first place both Class Class II Nats performance potential later issues Ill cover some other less known carrier aircraft including car rier arm German Luftwaffe aircraft would particularly like see have questions concerning specific aircraft let know Richard L Perry 5016 ngelita Ave Dayton OH 45424 Shark Weber continued page 39 other always present transmitter battery kept charged connecting battery field box field box battery voltage began drop car battery pressed service new record surpass German mark 2% needed 62551 As duration approached grew appre hensive Would engine let us down now fuel holding out somewhat rich mixture long could glide necessary engine kept purring new record Now lets go broke take risks stretch record far possi ble thermals engine slowed bare tick-over mixture adjusted leaner An hour half later tac tics contributed sudden termination flight flying slowly 50 feet some trees beside lake left wingtip stalled Shark turned toward trees encouraged wind blowing way Hard right rudder little im mediate effect slow-flying plane desperation opened throttle blow air across rudder try clear tops trees engine im mediately died lean within two seconds Shark firmly ensnared 60 feet up tallest oak tree end record flight PROP SAFETY interest promoting safety following being published upon request Top Flite Models Inc Top Flite Models Inc has announced adoption Standards Instructions Warnings respect using propellers safely properly Standards carefully developed cooperation other propeller manufacturers model engine kit manufacturers others anticipated Instructions Warnings will adopted propeller manufacturers also engine kit equipment manu facturers Top Flite has purposely omitted copy right Instructions Warnings order segments industry volved propellers may freely use Standards Additionally Top Flite states copies Standards will available cost plus small handling charge inter ested manufacturer distributor dealer inclusion product distribution modelers INSTRUCTION AND WARNING SHEET Use Propellers Safely & Properly 1 Fo correct propeller size sod pitch follow advice engine manufacturer prop chart availahle frea dasler Top Flits 2 Install prop curved side facing Securely tighten propeller nut use correct wrench purpose 3 When starting engine hasp spectators away 20 feet out path rotating prop 4 Keep hands away prop much possihle use chicken stick device electric starter follow instructions supplied device 5 Keep face hody away path prop start run engine 6 Make engine adjustments hehind rotating prop 7 To stop engine cut off fuel sapply follow engine manufacturers directions Dont use hands fingers part hody Dont threw anything running engine 8 Discard props nicks scratches splits cracks sign wear damage Never repair alter shave hend propl Normal engine vihration can loosen prop inspect end retighten necessaryl Additional Precautions A Use safety glasses starting running angina B Dont run engine area loose gravel sand prop may throw such material face eyes C KEEP AWAY FROM PROP Loose clothingshirt sleeves ties scarfsor loose ohiects pencils screw drivers may fafl out shirt jacket pockets prop D Make certain glow plug dip connector secure will pop nff otherwise get intO reining prop E If spinner used certain its edges touch prop hlades Additional Special Warnings Instructions Nylon Propellers Nylon props affected hy amount moisture air will heceme hrittle hreak too dry Since amount moisture may vary greatly time manu facture follows 1 Boil propeller water 30 minutes hef ore first use Water should cover entire prop cover pat Let prop stay water until cool 2 You can add dye IRit etc water identify hoiled props against unhoiled 3 After use prop remove engine wrap meist cloth paper towel rag store water tight plastic hag 90 Model Aviation FINE QUALITY KITS AND ACCESSORIES 5 SCALE PLASTIC KITS FLYING MODEL ACCESSORIES SCALE PILOTS INE GUNS WHEELS & WHEEL PANTS ENGINE KITS & CYLINDERS SEND 501 FOR COMPLETE CATALOG 181 Dept MA PAWNEE STREET ILLIANS SAN MARCOS CALIFORNIA 9 ScALS DRAWINGS/I MORRISON1977 cATALOG 25$ ii TECH ENZIE HWY InternatIohe/ VIDA OREGON 97460 MR MODELER manufacture special ized accessories make R/C modeling easier never out stock items manufacture Seeyour deal er send first class stamp catalog sheets listing over 70 items complete pictures prices OVER 12 YEARS SERVICE WHEELS RO WHEELS Smooth inflatable wheels big airplanes Features two piece bolt gether hubs hub caps Wheels can inflated deflated thru tiny valve side tire pressure de sire Truly remark able realistic looking wheel I$795 Pair 450R4-1 /2 Diameter995 Pair SOOR 5 Diameter11 95 Pair 550R5-1 /2 Diameter1 395 Pair 600R ameter1 595 Pair Low bounce shock absorbing wheels featuring 6 spoke dura hub finest quality hand inspected 175Tor RWheels 1-3/4$219 Pair 200 T RWheels 2239 Pair 225 T R SWheels 2-1/4259 Pair 250 T R SWheels 2-1/2279 Pair 275 T R 5Wheels 2-3/4299 Pair 300 T R 5Wheels 3319 Pair 325 T RWheels 3-1 /4339 Pair 350 T RWheels 3-1/2359 Pair DUBRO PRODUCTS INCORPORATED 480 BONNER ROAD WAUCONDA ILL 60084 total duration 75623 Fortunately FAI Sporting Code states explicitly required seaplanes land water So new record record-setting plane tree top Glenn Scillian went get help friends area spied ropes holding up canopy ropes hatchet John Tallmans car plunged through poison ivy base plane-eating tree climbed tree attacked offending branches After long exhausting work Shark fell stages ground delighted find damage minimal Lots fuel left later measure ment showed 35 fi oz 42% origi nal fuel remained tanks enough additional 5 hours same rate fuel usage longer leaner mixture ligher model ever records made actual rather potential performance Surpassing German record 25% quite satis fying result Special thanks order official witnesses some took day va cation leave help Friday lake busy Particular recognition due invisible Kenny Greenhouse Long ago Kenny assigned role documenting record attempts camera have never picture record articles Thanks also Dean Smith Lee Shiflett supplied critical parts flight Record setting exciting re warding activity doesnt require weekly travel follow contest circuit yet can compete entire world Opti mizing element modelair frame engine fuel system other componentsis necessary succeed Originality needed since wont find standardized approaches seen nor mal competition Free flight neglected area USA has 27 outdoor free flight records nearly held eastern European countries Control line radio control also have room improved performances Lets get going Tow Signs/Layers continued page 50 remaining raw fabric edges aliphatic glue has thinned 50-50 water Coat just /8-in margin fab ric will effectively stop edges raveling yet leave letter flexi ble After glue dry remove letter board trim off excess thread rough fabric edges part stiffener extends beyond edge letter Leave connector pole extra long now Photo 14 shows steps forming connector end connector pole Notice letters square front corners must have fabric cut out slight ly area Slip two sequins place leaving 1/16 3/32 between Although hole sequins small can forced over bamboo easily shish kebab style scrap ply wood hole makes fine tool push trim off bamboo leaving about 1/32 projecting form good glue joint Now glue sequins place epoxy sure form complete fillet epoxy between bamboo sequin surfaces As form inboard fillet let epoxy cover joint between connector line thread connector pole reinforcement junction pole sequins thread must good strong since entire towing load concentrated point last step letter finished Slide split-shot weight place photo 14 squeeze tightly fastened over both connector line thread fabric Youll have trim fabric edge back little get weight right position shapes other characters vary illustrated construc tion principles same charac ter has connector pole front connector loops back strip bamboo stiffens edge lead ing edge character needs balance December1977 91 WHOLE NEW LINE OF SMOOTH INFLATABLE BIG WHEELS 4 4Y 5 51h& 6 TREAD T SMOOTH R SLICKS 5 2