HALF-A RACERS fun No doubt about of Control Line Racings events Scale Racers Mouse Racers really fun contests youre going racing course its better win thought mind may want look over Sky-Baby truly competitive machine has evolved over period five years least airplanes has winners circle often actual Sky-Baby ship after model patterned first known Art Chesters original Sweepea Goodyear racer Sweepea II built its longer deeper fuselage old Sweepea sold Chesters mechanic Lynn Kauffold stretched deepened its fuselage renamed resulting air craft Sky-Baby Unhappily both Sweepea II SkyBaby crashed 1949 within few weeks other both fatally thus two faster unique early Good year-class racers gone model As modeling subject SkyBaby has quite lot going midwing clean strong flies banking long tail moment assures good response V-tail unit racing philosophy holds necessarily fastest airplane wins Rather winner first cross finish line end model SkyBaby excellent choice conceived first superb flierreliable tough simple possible fast anything else youre likely come up against achieve Sky-Baby bit unusual its tilted nose its V-tail Well tell about V-tails can some really neat things once understood Sky-Baby uses elevator its left stabilizer configuration will im part right rudder effect help hold lines tight just need during take-off landing Up other end slant-mounted engine arranged fall readily pitmans hand fastest pit stops resists flooding affords good cylinder needle valve protection event ofamishap front end model employs 68 Model Aviation Control Line Racing fun easiest way get 1/2A such designs mid-wing location V-tail plus features unusual amount piywood adding very little weight firmly ties engine mount landing gear wings bellerank mount really solid properly aligned unit Furthermore wing has basswood leading edge basswood tail nylon-reinforced told tough airplane Construction various components can produced order like obvious have come together sooner later find conven ient proceed following manner Select nice flat sheet light -in stock wing Cut length cut leading edge taper Glue bass wood leading edge tape place allow dry Pick really firm piece of4-in stock fuselage jigsaw shape Glue place tail-skid mount landing gear re inforcements two 1/32 plywood nose doubler Set aside dry Finish cutting wing shape cut small circular recess bellcrank mount Plane sand wing airfoil shape use flat-bottom lifting airfoil section center tips washedout 1/16-in tip avoid tip stall upper surface formed much like HL Glider wing using straight slope behind high point LE right wing sharp left LE remains round done cause right wing stall first thereby maintaining line tension landing speeds Assemble bellerank mount 1/16 plywood wing mount Install 2-56 blind mounting nut wing mount assembly fill nut threads modeling clay keep glue paint out later Glue wing mount wing Set aside Cut slot fuselage stabilizer clean up slot wing carve sand fuselage Bend landing gear wire shape assemble wheels axles dont think using anything other carefully soldered washers Assemble landing gear fuselage sewing soft wire through drilled holes Cut plywood firewall shape drill mounting holes insert 256 blind mounting nuts Plug threads modeling clay secure nuts Hot Stuff Note angle front plywood wing mount will establish proper engine off-set Epoxy wing wing mount assembly slot fuselage epoxy firewall fuselage wing mount Fillet joints Sig Epoxolite equivalent Cut stabilizer shape piece Sand streamline airfoil Cut nearly through center crack proper dihedral angle secure angle Hot Stuff Next apply strip nylon tape top bottom dihedral break using epoxy glue Allow cure sand smooth separate elevator left stabilizer half Epoxy stabilizer assembly fuse lage slot glue nylon tape strips fuselagelower stabilizer joint side Epoxy tail skid place add reinforcing patch lightweight airplane will accelerate faster heavy going hold weight down Carefully sand whole model smooth fill dings nicks Sand some Brush single coat K&B Superpoxy Primer cured sand No 200 paper Protect wheels paint aluminum foil Add line guide Spray two very thin coats yellow Superpoxy cured lightly wet-sand No 400 wet-or-dry paper Add decals desiredlicense number racing number etc Allow dry completely Finish single coat clear Super poxy protect everything Hinge elevator did remember paint didnt stabilizer using dental floss sewn Figure-8 pattern through drilled holes way will never bind paint Assemble entire control system model engine pretty darned hard beat good Cox Black Widow parts fit right can forget new ones funny exhausts though can either matter skill luck best racing engine bought dollar garage sale Anyway Black Widow Tee Dee 049 cylinder highcompression head jacked-up couple extra gaskets may just combina tion looking Nothing radical understand just want reliable both starting running touchy needle setting up engine sure locate fuel pick-up tube will outside flying circle Flying two ways go propellers Tornado 5-4 fast right out box relatively tough what usually use However Cox 5-4 gray can cut down 4/8 area trimmed balanced etc will skosh fasterbut will much likely break during botched takeoff landing several approaches subject fuel well nitro will go faster will take considerable toll January 1983 69 Trim colordecal sheet cutto shape Lettering numbersare press/transfersheets available art sUDDIY stores engines plugs Something like Cox Racing Fuel usually just about right giving good turn speed good starting engine longevity normal fuel-engine combination however may find yourself making pitstops requiredand know youre going win sitting ground trick make up can long-range fuel adding part volume castor oil ugh four parts unleaded gasoline Coleman stove fuel excellent add part mix four parts racing fuel gasoline contains energy per unit volume does alcohol therefore engine can run leaner needle setting give few extra laps lines control safety link racer Take good care Always make up lines same type handle connectors air plane will using avoid variables Also make up lines nominal 42 ft required make up pair 5 over length set 5 under length contest use shortest length allowed contest committee may measure some what differently did Additionally legally shorter lines can offer very slight advantage terms both speed distance flown over long lines legal C1 IN Ia a U aa N c3 LL length Examine lines connectors carefully before race wipe off accumulation oil grime clean paper towel crud can contribute sticky controls Racing Control Line race definitely team effort between ground crew pitman pilot have already shown build setup com petitive airplane modest cost Now well take care ground crew using same winning although inexpensive philosophy First provide pitman starting glove start left-hand us cheap cotton work glove Secure pair heavy duty D-size dry-cells back glove means battery box hobby shop several turns electrical tape wrapped around glove Brass rings soldered up -in brass strip placed thumb forefinger wired batterieswiring parallel Because likelihood shorts good idea place on-off switch circuit too Just remember turn needing Notice pitman grasps model engine thumb ring falls naturally top glow head forefinger ring crankcase Important sure scrape colored coating crankcase ring contacts order ensure good electrical contact bulb will nicely fuel model find convenient use 10cc disposable syringe hold just enough fill prime engine very convenient ever becomes necessary short-tank order come out right number pit stops Five minutes before race no time get act together Check out pack necessary gear night before good nights sleep lot productive last-minute panic dont pay attention us circleswe know better everything panic mode best thing can practice flying same pilot/pitman combina tion youll racing hint fast starts warm up engine two-minute warning shut down holding models tail straight up press rag hubdont ever throw rag prop can break prop crankshaft Top off tank keeping plug hot firmly grasping prop turn smartly can feel engine bump 10 seconds stop bumping engage wind starter spring word Go everything should Tips pilots dive whip gliding model pitman model glides Continued page 168 70 Model Aviation 0123456 -I/IA PLYI/IA PLY BELLCRANK MOUNT ONIflChOS BELLCRANK MOUNTIon nRINGUNDER SlOE OF WINSNO WING-TIP WEIGHT DRILL I/BNOTE SLANT FOR ENSINE OFF-SETIS REQUIRED LINE OUIUEPLY RIND UOES ATOP 032 PLGSTIC01/400 BASS LE l/IGHERE ALIUN HOLESSOWN SOLOI / LINE GUISEBERG I/S CRANK II AIRFOIL HIGH POINT USE 002 WIRE LEADOUTS III\.I---WING SHEET BALSA MEDIUM I/IA PLO BINS RECESSED INTO WING I USE 2-56 BLIND MIG Io NUT B SCREW TO1F11 RETAIN BELLCRANHU --7 L WASHOUT TIP I/IA FROM THIS PT I/I6WIRE LU NOTEU TYPE TAIL GOLOBERS /SA HORN _________ON UNDERSIDE OF ELEVATOR SUGGEST SEWN DENTAL FLOSS HINGES 1/450 BASSNOTE ENUINE IS MOUNTEDH REINFORCEMENTSON SLANT WITH CYLINDER AND NEEDLE VALUE TO- RISHY OF CENTER LINE, DRILL I/BI/BPLY FIREWALLV" -HPLACES FORWINO~ 256BLIND--UT MOUNTING NUTSDESIGNED FOR COG 049 BLACK BELLCRANK MOUNT NYLON TAPE REINFORCEMENT IICOLORSCHEME CREAMOVER ALL DIG WHEELSRED WHITE BLUE RACING STRIPEAMA CLASS SCALE MOUSE RACER BLACK ANTI-GLARE NUMBERSSPAN lB 0/4 WEIGHT 5 5/4 O DESISNED BY FRANK SCOTT TOLEDO/ 83 TWENTY-NI NTH ANNUAL RADIO CONTROL EXPOSITI ON TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO Reserve April 8 9 10 1983 attend wolds greatest radio con trol model show featu ring worlds largest Swap Shops no dealers complete ref resh ment centers Saturday Night Auction raffles complete nc systems accessories acres free parking Bring latest com pletely finished models display enter com petition exciting awards Complete nc systems will presented first second third place win ners new Video Cassette Recorder will awarded lucky winner Best Show Open public three great days 89& FRIDAY9amto6pm SATURDAY 9am to6pm SUNDAY 9am to43Opm presented Weak Signals RIC Club PO Box 5772 Toledo Ohio 43613 Propeller cont 0030 suggested Assume E 085 calculate MPH using HP value engine 10cc power curve proceed follows 1 Align edge HP RPM values taken engine curve 2 Place T-pin L intersection pivot edge right side aligns calculated MPH value 3 Read J J scale calculate diameter pitch shown 4 Determine F thrust before propellers will attain 85% effi ciency because low p/d general application MPH might need recal culated after first approximation results will quite accurate may proceed confidence carve oddball propeller described have accurate engine airframe drag data Just conform parameters defined earlier however play nomograph conjunction engine curve propeller efficiency curve will conclude typical 10cc engine Pattern airplane will get essentially equivalent performance using 10A x 7 .oranllx7.oranllx7.oran 11 x 8 About will change engine RPM Sky Baby/Scott Continued page 70 lot faster can run try land airplane about quarter eighth lap short him can save lot time round Tips pitmen model touches down will travelling pretty fast biggest target strongest part As engine its mounting seems pretty good trick field dead-stick though moving airplane its nose filled fuel syringe held left hand already wired starting thus leaving right hand free catching Fly smooth race Sky-Baby well soon see winners circle Materials list 1 x 3 x 36 Balsa hardFuselage 1 x 3 x 36 Balsa lightWing 11/16 x 2 x 18 BassTail 1 x Wing tail skid mount 1/32 PlywoodDoublers 1/12 PlywoodWing mount PlywoodFirewall 062 Diameter wireLanding gear 045 Diameter wirePushrod 032 Diameter wireTail skid 025 Diameter wireLead-outs 5-Minute epoxy glue Hot Stuff Goldberg control horn set Goldberg nylon reinforcing tape 2-56 Blind mounting nuts 5 2-56 x -in Screws 5 K&B Superpoxy Primer yellow clear Cox Black Widow engine Tomado 5-4 nylon prop FF Scale/Warner Continued page 57 prop shaft apply little heat match hot soldering iron contract neatly onto wire making hook wont cut rubber motor can used make winding tubes shrunk size bigger sizes used wiring hamesses retain flexibility toughness small bit shrunk end axle holds wheel Another hint Hot Stuff addicts involves what dam stuff wont set up youre tired waiting used blow fine baking soda dusting joint using just pinch between thumb first finger ground back forth blowing toward wet adhesive new product finding its way shelves hobby stores lifesaver time saver smell Ithink breathing may no good comes small bottle pump-tray nozzle used evapor ates almost instantly Although can used prep surfaces five bucks bottle prefer just save until need instant setting Its super-glue acceleratormakes cyanoacrylate glues set up almost instantly Several manufac turers ZAP Ace Hot Stuff market Make own planes own wheels local surplus auto parts store hardware store two can relied stock variety sizes 0 rings make great-looking tires gas jobs weight factor Peanuts dont recommend clever rubber-motor hook-ons some guys use have seen couple break very inopportune times figure has enough trouble adding another thing go wrong Like simple weird models Dave Aronstein Mid-Hudson Model Masters Baron Von Heinigrabbers outfit has plans ranging ultralight Goldwing Miles Libellula has Peanut plans HE 100 Gipsy Moth Stinson Reliant Goon Monocoupe others Ive seen ultralights Cloudbuster fly claim two-minute model exaggerated Send him buck plans list put some fun back jaded existence Dave Aronstein 50 Pasture Lane Poughkeepsie NY 12603 address final hint day comes other neighbor pages Bob Meuser Bob pre-shrinks superfine tissue frame takes Sharpie pen art-supply store saws open guts containing ink sloshed around small pan lacquer thinner about -in depth resulting mess swabbed onto tissue using absorbent material inside mop Bob says abbing back forth north south east west repeating plain lacquer thinner managed get fairly Somewhat similar results may obtained using Marks-a-Lot alcohol-based felt pen overlapping strokes fancy quick-and-dirty way get job done especially condenser paper Yellow seems work best Thanks great support 5 x 7 contrasty prints see too seldom hints share Bill Warner 423-C San Vicente Blvd Santa Monica CA 90402 SAFE FLYING IS NO ACCIDENT 168 Model Aviation
Edition: Model Aviation - 1983/01
Page Numbers: 68, 69, 70, 168
HALF-A RACERS fun No doubt about of Control Line Racings events Scale Racers Mouse Racers really fun contests youre going racing course its better win thought mind may want look over Sky-Baby truly competitive machine has evolved over period five years least airplanes has winners circle often actual Sky-Baby ship after model patterned first known Art Chesters original Sweepea Goodyear racer Sweepea II built its longer deeper fuselage old Sweepea sold Chesters mechanic Lynn Kauffold stretched deepened its fuselage renamed resulting air craft Sky-Baby Unhappily both Sweepea II SkyBaby crashed 1949 within few weeks other both fatally thus two faster unique early Good year-class racers gone model As modeling subject SkyBaby has quite lot going midwing clean strong flies banking long tail moment assures good response V-tail unit racing philosophy holds necessarily fastest airplane wins Rather winner first cross finish line end model SkyBaby excellent choice conceived first superb flierreliable tough simple possible fast anything else youre likely come up against achieve Sky-Baby bit unusual its tilted nose its V-tail Well tell about V-tails can some really neat things once understood Sky-Baby uses elevator its left stabilizer configuration will im part right rudder effect help hold lines tight just need during take-off landing Up other end slant-mounted engine arranged fall readily pitmans hand fastest pit stops resists flooding affords good cylinder needle valve protection event ofamishap front end model employs 68 Model Aviation Control Line Racing fun easiest way get 1/2A such designs mid-wing location V-tail plus features unusual amount piywood adding very little weight firmly ties engine mount landing gear wings bellerank mount really solid properly aligned unit Furthermore wing has basswood leading edge basswood tail nylon-reinforced told tough airplane Construction various components can produced order like obvious have come together sooner later find conven ient proceed following manner Select nice flat sheet light -in stock wing Cut length cut leading edge taper Glue bass wood leading edge tape place allow dry Pick really firm piece of4-in stock fuselage jigsaw shape Glue place tail-skid mount landing gear re inforcements two 1/32 plywood nose doubler Set aside dry Finish cutting wing shape cut small circular recess bellcrank mount Plane sand wing airfoil shape use flat-bottom lifting airfoil section center tips washedout 1/16-in tip avoid tip stall upper surface formed much like HL Glider wing using straight slope behind high point LE right wing sharp left LE remains round done cause right wing stall first thereby maintaining line tension landing speeds Assemble bellerank mount 1/16 plywood wing mount Install 2-56 blind mounting nut wing mount assembly fill nut threads modeling clay keep glue paint out later Glue wing mount wing Set aside Cut slot fuselage stabilizer clean up slot wing carve sand fuselage Bend landing gear wire shape assemble wheels axles dont think using anything other carefully soldered washers Assemble landing gear fuselage sewing soft wire through drilled holes Cut plywood firewall shape drill mounting holes insert 256 blind mounting nuts Plug threads modeling clay secure nuts Hot Stuff Note angle front plywood wing mount will establish proper engine off-set Epoxy wing wing mount assembly slot fuselage epoxy firewall fuselage wing mount Fillet joints Sig Epoxolite equivalent Cut stabilizer shape piece Sand streamline airfoil Cut nearly through center crack proper dihedral angle secure angle Hot Stuff Next apply strip nylon tape top bottom dihedral break using epoxy glue Allow cure sand smooth separate elevator left stabilizer half Epoxy stabilizer assembly fuse lage slot glue nylon tape strips fuselagelower stabilizer joint side Epoxy tail skid place add reinforcing patch lightweight airplane will accelerate faster heavy going hold weight down Carefully sand whole model smooth fill dings nicks Sand some Brush single coat K&B Superpoxy Primer cured sand No 200 paper Protect wheels paint aluminum foil Add line guide Spray two very thin coats yellow Superpoxy cured lightly wet-sand No 400 wet-or-dry paper Add decals desiredlicense number racing number etc Allow dry completely Finish single coat clear Super poxy protect everything Hinge elevator did remember paint didnt stabilizer using dental floss sewn Figure-8 pattern through drilled holes way will never bind paint Assemble entire control system model engine pretty darned hard beat good Cox Black Widow parts fit right can forget new ones funny exhausts though can either matter skill luck best racing engine bought dollar garage sale Anyway Black Widow Tee Dee 049 cylinder highcompression head jacked-up couple extra gaskets may just combina tion looking Nothing radical understand just want reliable both starting running touchy needle setting up engine sure locate fuel pick-up tube will outside flying circle Flying two ways go propellers Tornado 5-4 fast right out box relatively tough what usually use However Cox 5-4 gray can cut down 4/8 area trimmed balanced etc will skosh fasterbut will much likely break during botched takeoff landing several approaches subject fuel well nitro will go faster will take considerable toll January 1983 69 Trim colordecal sheet cutto shape Lettering numbersare press/transfersheets available art sUDDIY stores engines plugs Something like Cox Racing Fuel usually just about right giving good turn speed good starting engine longevity normal fuel-engine combination however may find yourself making pitstops requiredand know youre going win sitting ground trick make up can long-range fuel adding part volume castor oil ugh four parts unleaded gasoline Coleman stove fuel excellent add part mix four parts racing fuel gasoline contains energy per unit volume does alcohol therefore engine can run leaner needle setting give few extra laps lines control safety link racer Take good care Always make up lines same type handle connectors air plane will using avoid variables Also make up lines nominal 42 ft required make up pair 5 over length set 5 under length contest use shortest length allowed contest committee may measure some what differently did Additionally legally shorter lines can offer very slight advantage terms both speed distance flown over long lines legal C1 IN Ia a U aa N c3 LL length Examine lines connectors carefully before race wipe off accumulation oil grime clean paper towel crud can contribute sticky controls Racing Control Line race definitely team effort between ground crew pitman pilot have already shown build setup com petitive airplane modest cost Now well take care ground crew using same winning although inexpensive philosophy First provide pitman starting glove start left-hand us cheap cotton work glove Secure pair heavy duty D-size dry-cells back glove means battery box hobby shop several turns electrical tape wrapped around glove Brass rings soldered up -in brass strip placed thumb forefinger wired batterieswiring parallel Because likelihood shorts good idea place on-off switch circuit too Just remember turn needing Notice pitman grasps model engine thumb ring falls naturally top glow head forefinger ring crankcase Important sure scrape colored coating crankcase ring contacts order ensure good electrical contact bulb will nicely fuel model find convenient use 10cc disposable syringe hold just enough fill prime engine very convenient ever becomes necessary short-tank order come out right number pit stops Five minutes before race no time get act together Check out pack necessary gear night before good nights sleep lot productive last-minute panic dont pay attention us circleswe know better everything panic mode best thing can practice flying same pilot/pitman combina tion youll racing hint fast starts warm up engine two-minute warning shut down holding models tail straight up press rag hubdont ever throw rag prop can break prop crankshaft Top off tank keeping plug hot firmly grasping prop turn smartly can feel engine bump 10 seconds stop bumping engage wind starter spring word Go everything should Tips pilots dive whip gliding model pitman model glides Continued page 168 70 Model Aviation 0123456 -I/IA PLYI/IA PLY BELLCRANK MOUNT ONIflChOS BELLCRANK MOUNTIon nRINGUNDER SlOE OF WINSNO WING-TIP WEIGHT DRILL I/BNOTE SLANT FOR ENSINE OFF-SETIS REQUIRED LINE OUIUEPLY RIND UOES ATOP 032 PLGSTIC01/400 BASS LE l/IGHERE ALIUN HOLESSOWN SOLOI / LINE GUISEBERG I/S CRANK II AIRFOIL HIGH POINT USE 002 WIRE LEADOUTS III\.I---WING SHEET BALSA MEDIUM I/IA PLO BINS RECESSED INTO WING I USE 2-56 BLIND MIG Io NUT B SCREW TO1F11 RETAIN BELLCRANHU --7 L WASHOUT TIP I/IA FROM THIS PT I/I6WIRE LU NOTEU TYPE TAIL GOLOBERS /SA HORN _________ON UNDERSIDE OF ELEVATOR SUGGEST SEWN DENTAL FLOSS HINGES 1/450 BASSNOTE ENUINE IS MOUNTEDH REINFORCEMENTSON SLANT WITH CYLINDER AND NEEDLE VALUE TO- RISHY OF CENTER LINE, DRILL I/BI/BPLY FIREWALLV" -HPLACES FORWINO~ 256BLIND--UT MOUNTING NUTSDESIGNED FOR COG 049 BLACK BELLCRANK MOUNT NYLON TAPE REINFORCEMENT IICOLORSCHEME CREAMOVER ALL DIG WHEELSRED WHITE BLUE RACING STRIPEAMA CLASS SCALE MOUSE RACER BLACK ANTI-GLARE NUMBERSSPAN lB 0/4 WEIGHT 5 5/4 O DESISNED BY FRANK SCOTT TOLEDO/ 83 TWENTY-NI NTH ANNUAL RADIO CONTROL EXPOSITI ON TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO Reserve April 8 9 10 1983 attend wolds greatest radio con trol model show featu ring worlds largest Swap Shops no dealers complete ref resh ment centers Saturday Night Auction raffles complete nc systems accessories acres free parking Bring latest com pletely finished models display enter com petition exciting awards Complete nc systems will presented first second third place win ners new Video Cassette Recorder will awarded lucky winner Best Show Open public three great days 89& FRIDAY9amto6pm SATURDAY 9am to6pm SUNDAY 9am to43Opm presented Weak Signals RIC Club PO Box 5772 Toledo Ohio 43613 Propeller cont 0030 suggested Assume E 085 calculate MPH using HP value engine 10cc power curve proceed follows 1 Align edge HP RPM values taken engine curve 2 Place T-pin L intersection pivot edge right side aligns calculated MPH value 3 Read J J scale calculate diameter pitch shown 4 Determine F thrust before propellers will attain 85% effi ciency because low p/d general application MPH might need recal culated after first approximation results will quite accurate may proceed confidence carve oddball propeller described have accurate engine airframe drag data Just conform parameters defined earlier however play nomograph conjunction engine curve propeller efficiency curve will conclude typical 10cc engine Pattern airplane will get essentially equivalent performance using 10A x 7 .oranllx7.oranllx7.oran 11 x 8 About will change engine RPM Sky Baby/Scott Continued page 70 lot faster can run try land airplane about quarter eighth lap short him can save lot time round Tips pitmen model touches down will travelling pretty fast biggest target strongest part As engine its mounting seems pretty good trick field dead-stick though moving airplane its nose filled fuel syringe held left hand already wired starting thus leaving right hand free catching Fly smooth race Sky-Baby well soon see winners circle Materials list 1 x 3 x 36 Balsa hardFuselage 1 x 3 x 36 Balsa lightWing 11/16 x 2 x 18 BassTail 1 x Wing tail skid mount 1/32 PlywoodDoublers 1/12 PlywoodWing mount PlywoodFirewall 062 Diameter wireLanding gear 045 Diameter wirePushrod 032 Diameter wireTail skid 025 Diameter wireLead-outs 5-Minute epoxy glue Hot Stuff Goldberg control horn set Goldberg nylon reinforcing tape 2-56 Blind mounting nuts 5 2-56 x -in Screws 5 K&B Superpoxy Primer yellow clear Cox Black Widow engine Tomado 5-4 nylon prop FF Scale/Warner Continued page 57 prop shaft apply little heat match hot soldering iron contract neatly onto wire making hook wont cut rubber motor can used make winding tubes shrunk size bigger sizes used wiring hamesses retain flexibility toughness small bit shrunk end axle holds wheel Another hint Hot Stuff addicts involves what dam stuff wont set up youre tired waiting used blow fine baking soda dusting joint using just pinch between thumb first finger ground back forth blowing toward wet adhesive new product finding its way shelves hobby stores lifesaver time saver smell Ithink breathing may no good comes small bottle pump-tray nozzle used evapor ates almost instantly Although can used prep surfaces five bucks bottle prefer just save until need instant setting Its super-glue acceleratormakes cyanoacrylate glues set up almost instantly Several manufac turers ZAP Ace Hot Stuff market Make own planes own wheels local surplus auto parts store hardware store two can relied stock variety sizes 0 rings make great-looking tires gas jobs weight factor Peanuts dont recommend clever rubber-motor hook-ons some guys use have seen couple break very inopportune times figure has enough trouble adding another thing go wrong Like simple weird models Dave Aronstein Mid-Hudson Model Masters Baron Von Heinigrabbers outfit has plans ranging ultralight Goldwing Miles Libellula has Peanut plans HE 100 Gipsy Moth Stinson Reliant Goon Monocoupe others Ive seen ultralights Cloudbuster fly claim two-minute model exaggerated Send him buck plans list put some fun back jaded existence Dave Aronstein 50 Pasture Lane Poughkeepsie NY 12603 address final hint day comes other neighbor pages Bob Meuser Bob pre-shrinks superfine tissue frame takes Sharpie pen art-supply store saws open guts containing ink sloshed around small pan lacquer thinner about -in depth resulting mess swabbed onto tissue using absorbent material inside mop Bob says abbing back forth north south east west repeating plain lacquer thinner managed get fairly Somewhat similar results may obtained using Marks-a-Lot alcohol-based felt pen overlapping strokes fancy quick-and-dirty way get job done especially condenser paper Yellow seems work best Thanks great support 5 x 7 contrasty prints see too seldom hints share Bill Warner 423-C San Vicente Blvd Santa Monica CA 90402 SAFE FLYING IS NO ACCIDENT 168 Model Aviation
Edition: Model Aviation - 1983/01
Page Numbers: 68, 69, 70, 168
HALF-A RACERS fun No doubt about of Control Line Racings events Scale Racers Mouse Racers really fun contests youre going racing course its better win thought mind may want look over Sky-Baby truly competitive machine has evolved over period five years least airplanes has winners circle often actual Sky-Baby ship after model patterned first known Art Chesters original Sweepea Goodyear racer Sweepea II built its longer deeper fuselage old Sweepea sold Chesters mechanic Lynn Kauffold stretched deepened its fuselage renamed resulting air craft Sky-Baby Unhappily both Sweepea II SkyBaby crashed 1949 within few weeks other both fatally thus two faster unique early Good year-class racers gone model As modeling subject SkyBaby has quite lot going midwing clean strong flies banking long tail moment assures good response V-tail unit racing philosophy holds necessarily fastest airplane wins Rather winner first cross finish line end model SkyBaby excellent choice conceived first superb flierreliable tough simple possible fast anything else youre likely come up against achieve Sky-Baby bit unusual its tilted nose its V-tail Well tell about V-tails can some really neat things once understood Sky-Baby uses elevator its left stabilizer configuration will im part right rudder effect help hold lines tight just need during take-off landing Up other end slant-mounted engine arranged fall readily pitmans hand fastest pit stops resists flooding affords good cylinder needle valve protection event ofamishap front end model employs 68 Model Aviation Control Line Racing fun easiest way get 1/2A such designs mid-wing location V-tail plus features unusual amount piywood adding very little weight firmly ties engine mount landing gear wings bellerank mount really solid properly aligned unit Furthermore wing has basswood leading edge basswood tail nylon-reinforced told tough airplane Construction various components can produced order like obvious have come together sooner later find conven ient proceed following manner Select nice flat sheet light -in stock wing Cut length cut leading edge taper Glue bass wood leading edge tape place allow dry Pick really firm piece of4-in stock fuselage jigsaw shape Glue place tail-skid mount landing gear re inforcements two 1/32 plywood nose doubler Set aside dry Finish cutting wing shape cut small circular recess bellcrank mount Plane sand wing airfoil shape use flat-bottom lifting airfoil section center tips washedout 1/16-in tip avoid tip stall upper surface formed much like HL Glider wing using straight slope behind high point LE right wing sharp left LE remains round done cause right wing stall first thereby maintaining line tension landing speeds Assemble bellerank mount 1/16 plywood wing mount Install 2-56 blind mounting nut wing mount assembly fill nut threads modeling clay keep glue paint out later Glue wing mount wing Set aside Cut slot fuselage stabilizer clean up slot wing carve sand fuselage Bend landing gear wire shape assemble wheels axles dont think using anything other carefully soldered washers Assemble landing gear fuselage sewing soft wire through drilled holes Cut plywood firewall shape drill mounting holes insert 256 blind mounting nuts Plug threads modeling clay secure nuts Hot Stuff Note angle front plywood wing mount will establish proper engine off-set Epoxy wing wing mount assembly slot fuselage epoxy firewall fuselage wing mount Fillet joints Sig Epoxolite equivalent Cut stabilizer shape piece Sand streamline airfoil Cut nearly through center crack proper dihedral angle secure angle Hot Stuff Next apply strip nylon tape top bottom dihedral break using epoxy glue Allow cure sand smooth separate elevator left stabilizer half Epoxy stabilizer assembly fuse lage slot glue nylon tape strips fuselagelower stabilizer joint side Epoxy tail skid place add reinforcing patch lightweight airplane will accelerate faster heavy going hold weight down Carefully sand whole model smooth fill dings nicks Sand some Brush single coat K&B Superpoxy Primer cured sand No 200 paper Protect wheels paint aluminum foil Add line guide Spray two very thin coats yellow Superpoxy cured lightly wet-sand No 400 wet-or-dry paper Add decals desiredlicense number racing number etc Allow dry completely Finish single coat clear Super poxy protect everything Hinge elevator did remember paint didnt stabilizer using dental floss sewn Figure-8 pattern through drilled holes way will never bind paint Assemble entire control system model engine pretty darned hard beat good Cox Black Widow parts fit right can forget new ones funny exhausts though can either matter skill luck best racing engine bought dollar garage sale Anyway Black Widow Tee Dee 049 cylinder highcompression head jacked-up couple extra gaskets may just combina tion looking Nothing radical understand just want reliable both starting running touchy needle setting up engine sure locate fuel pick-up tube will outside flying circle Flying two ways go propellers Tornado 5-4 fast right out box relatively tough what usually use However Cox 5-4 gray can cut down 4/8 area trimmed balanced etc will skosh fasterbut will much likely break during botched takeoff landing several approaches subject fuel well nitro will go faster will take considerable toll January 1983 69 Trim colordecal sheet cutto shape Lettering numbersare press/transfersheets available art sUDDIY stores engines plugs Something like Cox Racing Fuel usually just about right giving good turn speed good starting engine longevity normal fuel-engine combination however may find yourself making pitstops requiredand know youre going win sitting ground trick make up can long-range fuel adding part volume castor oil ugh four parts unleaded gasoline Coleman stove fuel excellent add part mix four parts racing fuel gasoline contains energy per unit volume does alcohol therefore engine can run leaner needle setting give few extra laps lines control safety link racer Take good care Always make up lines same type handle connectors air plane will using avoid variables Also make up lines nominal 42 ft required make up pair 5 over length set 5 under length contest use shortest length allowed contest committee may measure some what differently did Additionally legally shorter lines can offer very slight advantage terms both speed distance flown over long lines legal C1 IN Ia a U aa N c3 LL length Examine lines connectors carefully before race wipe off accumulation oil grime clean paper towel crud can contribute sticky controls Racing Control Line race definitely team effort between ground crew pitman pilot have already shown build setup com petitive airplane modest cost Now well take care ground crew using same winning although inexpensive philosophy First provide pitman starting glove start left-hand us cheap cotton work glove Secure pair heavy duty D-size dry-cells back glove means battery box hobby shop several turns electrical tape wrapped around glove Brass rings soldered up -in brass strip placed thumb forefinger wired batterieswiring parallel Because likelihood shorts good idea place on-off switch circuit too Just remember turn needing Notice pitman grasps model engine thumb ring falls naturally top glow head forefinger ring crankcase Important sure scrape colored coating crankcase ring contacts order ensure good electrical contact bulb will nicely fuel model find convenient use 10cc disposable syringe hold just enough fill prime engine very convenient ever becomes necessary short-tank order come out right number pit stops Five minutes before race no time get act together Check out pack necessary gear night before good nights sleep lot productive last-minute panic dont pay attention us circleswe know better everything panic mode best thing can practice flying same pilot/pitman combina tion youll racing hint fast starts warm up engine two-minute warning shut down holding models tail straight up press rag hubdont ever throw rag prop can break prop crankshaft Top off tank keeping plug hot firmly grasping prop turn smartly can feel engine bump 10 seconds stop bumping engage wind starter spring word Go everything should Tips pilots dive whip gliding model pitman model glides Continued page 168 70 Model Aviation 0123456 -I/IA PLYI/IA PLY BELLCRANK MOUNT ONIflChOS BELLCRANK MOUNTIon nRINGUNDER SlOE OF WINSNO WING-TIP WEIGHT DRILL I/BNOTE SLANT FOR ENSINE OFF-SETIS REQUIRED LINE OUIUEPLY RIND UOES ATOP 032 PLGSTIC01/400 BASS LE l/IGHERE ALIUN HOLESSOWN SOLOI / LINE GUISEBERG I/S CRANK II AIRFOIL HIGH POINT USE 002 WIRE LEADOUTS III\.I---WING SHEET BALSA MEDIUM I/IA PLO BINS RECESSED INTO WING I USE 2-56 BLIND MIG Io NUT B SCREW TO1F11 RETAIN BELLCRANHU --7 L WASHOUT TIP I/IA FROM THIS PT I/I6WIRE LU NOTEU TYPE TAIL GOLOBERS /SA HORN _________ON UNDERSIDE OF ELEVATOR SUGGEST SEWN DENTAL FLOSS HINGES 1/450 BASSNOTE ENUINE IS MOUNTEDH REINFORCEMENTSON SLANT WITH CYLINDER AND NEEDLE VALUE TO- RISHY OF CENTER LINE, DRILL I/BI/BPLY FIREWALLV" -HPLACES FORWINO~ 256BLIND--UT MOUNTING NUTSDESIGNED FOR COG 049 BLACK BELLCRANK MOUNT NYLON TAPE REINFORCEMENT IICOLORSCHEME CREAMOVER ALL DIG WHEELSRED WHITE BLUE RACING STRIPEAMA CLASS SCALE MOUSE RACER BLACK ANTI-GLARE NUMBERSSPAN lB 0/4 WEIGHT 5 5/4 O DESISNED BY FRANK SCOTT TOLEDO/ 83 TWENTY-NI NTH ANNUAL RADIO CONTROL EXPOSITI ON TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO Reserve April 8 9 10 1983 attend wolds greatest radio con trol model show featu ring worlds largest Swap Shops no dealers complete ref resh ment centers Saturday Night Auction raffles complete nc systems accessories acres free parking Bring latest com pletely finished models display enter com petition exciting awards Complete nc systems will presented first second third place win ners new Video Cassette Recorder will awarded lucky winner Best Show Open public three great days 89& FRIDAY9amto6pm SATURDAY 9am to6pm SUNDAY 9am to43Opm presented Weak Signals RIC Club PO Box 5772 Toledo Ohio 43613 Propeller cont 0030 suggested Assume E 085 calculate MPH using HP value engine 10cc power curve proceed follows 1 Align edge HP RPM values taken engine curve 2 Place T-pin L intersection pivot edge right side aligns calculated MPH value 3 Read J J scale calculate diameter pitch shown 4 Determine F thrust before propellers will attain 85% effi ciency because low p/d general application MPH might need recal culated after first approximation results will quite accurate may proceed confidence carve oddball propeller described have accurate engine airframe drag data Just conform parameters defined earlier however play nomograph conjunction engine curve propeller efficiency curve will conclude typical 10cc engine Pattern airplane will get essentially equivalent performance using 10A x 7 .oranllx7.oranllx7.oran 11 x 8 About will change engine RPM Sky Baby/Scott Continued page 70 lot faster can run try land airplane about quarter eighth lap short him can save lot time round Tips pitmen model touches down will travelling pretty fast biggest target strongest part As engine its mounting seems pretty good trick field dead-stick though moving airplane its nose filled fuel syringe held left hand already wired starting thus leaving right hand free catching Fly smooth race Sky-Baby well soon see winners circle Materials list 1 x 3 x 36 Balsa hardFuselage 1 x 3 x 36 Balsa lightWing 11/16 x 2 x 18 BassTail 1 x Wing tail skid mount 1/32 PlywoodDoublers 1/12 PlywoodWing mount PlywoodFirewall 062 Diameter wireLanding gear 045 Diameter wirePushrod 032 Diameter wireTail skid 025 Diameter wireLead-outs 5-Minute epoxy glue Hot Stuff Goldberg control horn set Goldberg nylon reinforcing tape 2-56 Blind mounting nuts 5 2-56 x -in Screws 5 K&B Superpoxy Primer yellow clear Cox Black Widow engine Tomado 5-4 nylon prop FF Scale/Warner Continued page 57 prop shaft apply little heat match hot soldering iron contract neatly onto wire making hook wont cut rubber motor can used make winding tubes shrunk size bigger sizes used wiring hamesses retain flexibility toughness small bit shrunk end axle holds wheel Another hint Hot Stuff addicts involves what dam stuff wont set up youre tired waiting used blow fine baking soda dusting joint using just pinch between thumb first finger ground back forth blowing toward wet adhesive new product finding its way shelves hobby stores lifesaver time saver smell Ithink breathing may no good comes small bottle pump-tray nozzle used evapor ates almost instantly Although can used prep surfaces five bucks bottle prefer just save until need instant setting Its super-glue acceleratormakes cyanoacrylate glues set up almost instantly Several manufac turers ZAP Ace Hot Stuff market Make own planes own wheels local surplus auto parts store hardware store two can relied stock variety sizes 0 rings make great-looking tires gas jobs weight factor Peanuts dont recommend clever rubber-motor hook-ons some guys use have seen couple break very inopportune times figure has enough trouble adding another thing go wrong Like simple weird models Dave Aronstein Mid-Hudson Model Masters Baron Von Heinigrabbers outfit has plans ranging ultralight Goldwing Miles Libellula has Peanut plans HE 100 Gipsy Moth Stinson Reliant Goon Monocoupe others Ive seen ultralights Cloudbuster fly claim two-minute model exaggerated Send him buck plans list put some fun back jaded existence Dave Aronstein 50 Pasture Lane Poughkeepsie NY 12603 address final hint day comes other neighbor pages Bob Meuser Bob pre-shrinks superfine tissue frame takes Sharpie pen art-supply store saws open guts containing ink sloshed around small pan lacquer thinner about -in depth resulting mess swabbed onto tissue using absorbent material inside mop Bob says abbing back forth north south east west repeating plain lacquer thinner managed get fairly Somewhat similar results may obtained using Marks-a-Lot alcohol-based felt pen overlapping strokes fancy quick-and-dirty way get job done especially condenser paper Yellow seems work best Thanks great support 5 x 7 contrasty prints see too seldom hints share Bill Warner 423-C San Vicente Blvd Santa Monica CA 90402 SAFE FLYING IS NO ACCIDENT 168 Model Aviation
Edition: Model Aviation - 1983/01
Page Numbers: 68, 69, 70, 168
HALF-A RACERS fun No doubt about of Control Line Racings events Scale Racers Mouse Racers really fun contests youre going racing course its better win thought mind may want look over Sky-Baby truly competitive machine has evolved over period five years least airplanes has winners circle often actual Sky-Baby ship after model patterned first known Art Chesters original Sweepea Goodyear racer Sweepea II built its longer deeper fuselage old Sweepea sold Chesters mechanic Lynn Kauffold stretched deepened its fuselage renamed resulting air craft Sky-Baby Unhappily both Sweepea II SkyBaby crashed 1949 within few weeks other both fatally thus two faster unique early Good year-class racers gone model As modeling subject SkyBaby has quite lot going midwing clean strong flies banking long tail moment assures good response V-tail unit racing philosophy holds necessarily fastest airplane wins Rather winner first cross finish line end model SkyBaby excellent choice conceived first superb flierreliable tough simple possible fast anything else youre likely come up against achieve Sky-Baby bit unusual its tilted nose its V-tail Well tell about V-tails can some really neat things once understood Sky-Baby uses elevator its left stabilizer configuration will im part right rudder effect help hold lines tight just need during take-off landing Up other end slant-mounted engine arranged fall readily pitmans hand fastest pit stops resists flooding affords good cylinder needle valve protection event ofamishap front end model employs 68 Model Aviation Control Line Racing fun easiest way get 1/2A such designs mid-wing location V-tail plus features unusual amount piywood adding very little weight firmly ties engine mount landing gear wings bellerank mount really solid properly aligned unit Furthermore wing has basswood leading edge basswood tail nylon-reinforced told tough airplane Construction various components can produced order like obvious have come together sooner later find conven ient proceed following manner Select nice flat sheet light -in stock wing Cut length cut leading edge taper Glue bass wood leading edge tape place allow dry Pick really firm piece of4-in stock fuselage jigsaw shape Glue place tail-skid mount landing gear re inforcements two 1/32 plywood nose doubler Set aside dry Finish cutting wing shape cut small circular recess bellcrank mount Plane sand wing airfoil shape use flat-bottom lifting airfoil section center tips washedout 1/16-in tip avoid tip stall upper surface formed much like HL Glider wing using straight slope behind high point LE right wing sharp left LE remains round done cause right wing stall first thereby maintaining line tension landing speeds Assemble bellerank mount 1/16 plywood wing mount Install 2-56 blind mounting nut wing mount assembly fill nut threads modeling clay keep glue paint out later Glue wing mount wing Set aside Cut slot fuselage stabilizer clean up slot wing carve sand fuselage Bend landing gear wire shape assemble wheels axles dont think using anything other carefully soldered washers Assemble landing gear fuselage sewing soft wire through drilled holes Cut plywood firewall shape drill mounting holes insert 256 blind mounting nuts Plug threads modeling clay secure nuts Hot Stuff Note angle front plywood wing mount will establish proper engine off-set Epoxy wing wing mount assembly slot fuselage epoxy firewall fuselage wing mount Fillet joints Sig Epoxolite equivalent Cut stabilizer shape piece Sand streamline airfoil Cut nearly through center crack proper dihedral angle secure angle Hot Stuff Next apply strip nylon tape top bottom dihedral break using epoxy glue Allow cure sand smooth separate elevator left stabilizer half Epoxy stabilizer assembly fuse lage slot glue nylon tape strips fuselagelower stabilizer joint side Epoxy tail skid place add reinforcing patch lightweight airplane will accelerate faster heavy going hold weight down Carefully sand whole model smooth fill dings nicks Sand some Brush single coat K&B Superpoxy Primer cured sand No 200 paper Protect wheels paint aluminum foil Add line guide Spray two very thin coats yellow Superpoxy cured lightly wet-sand No 400 wet-or-dry paper Add decals desiredlicense number racing number etc Allow dry completely Finish single coat clear Super poxy protect everything Hinge elevator did remember paint didnt stabilizer using dental floss sewn Figure-8 pattern through drilled holes way will never bind paint Assemble entire control system model engine pretty darned hard beat good Cox Black Widow parts fit right can forget new ones funny exhausts though can either matter skill luck best racing engine bought dollar garage sale Anyway Black Widow Tee Dee 049 cylinder highcompression head jacked-up couple extra gaskets may just combina tion looking Nothing radical understand just want reliable both starting running touchy needle setting up engine sure locate fuel pick-up tube will outside flying circle Flying two ways go propellers Tornado 5-4 fast right out box relatively tough what usually use However Cox 5-4 gray can cut down 4/8 area trimmed balanced etc will skosh fasterbut will much likely break during botched takeoff landing several approaches subject fuel well nitro will go faster will take considerable toll January 1983 69 Trim colordecal sheet cutto shape Lettering numbersare press/transfersheets available art sUDDIY stores engines plugs Something like Cox Racing Fuel usually just about right giving good turn speed good starting engine longevity normal fuel-engine combination however may find yourself making pitstops requiredand know youre going win sitting ground trick make up can long-range fuel adding part volume castor oil ugh four parts unleaded gasoline Coleman stove fuel excellent add part mix four parts racing fuel gasoline contains energy per unit volume does alcohol therefore engine can run leaner needle setting give few extra laps lines control safety link racer Take good care Always make up lines same type handle connectors air plane will using avoid variables Also make up lines nominal 42 ft required make up pair 5 over length set 5 under length contest use shortest length allowed contest committee may measure some what differently did Additionally legally shorter lines can offer very slight advantage terms both speed distance flown over long lines legal C1 IN Ia a U aa N c3 LL length Examine lines connectors carefully before race wipe off accumulation oil grime clean paper towel crud can contribute sticky controls Racing Control Line race definitely team effort between ground crew pitman pilot have already shown build setup com petitive airplane modest cost Now well take care ground crew using same winning although inexpensive philosophy First provide pitman starting glove start left-hand us cheap cotton work glove Secure pair heavy duty D-size dry-cells back glove means battery box hobby shop several turns electrical tape wrapped around glove Brass rings soldered up -in brass strip placed thumb forefinger wired batterieswiring parallel Because likelihood shorts good idea place on-off switch circuit too Just remember turn needing Notice pitman grasps model engine thumb ring falls naturally top glow head forefinger ring crankcase Important sure scrape colored coating crankcase ring contacts order ensure good electrical contact bulb will nicely fuel model find convenient use 10cc disposable syringe hold just enough fill prime engine very convenient ever becomes necessary short-tank order come out right number pit stops Five minutes before race no time get act together Check out pack necessary gear night before good nights sleep lot productive last-minute panic dont pay attention us circleswe know better everything panic mode best thing can practice flying same pilot/pitman combina tion youll racing hint fast starts warm up engine two-minute warning shut down holding models tail straight up press rag hubdont ever throw rag prop can break prop crankshaft Top off tank keeping plug hot firmly grasping prop turn smartly can feel engine bump 10 seconds stop bumping engage wind starter spring word Go everything should Tips pilots dive whip gliding model pitman model glides Continued page 168 70 Model Aviation 0123456 -I/IA PLYI/IA PLY BELLCRANK MOUNT ONIflChOS BELLCRANK MOUNTIon nRINGUNDER SlOE OF WINSNO WING-TIP WEIGHT DRILL I/BNOTE SLANT FOR ENSINE OFF-SETIS REQUIRED LINE OUIUEPLY RIND UOES ATOP 032 PLGSTIC01/400 BASS LE l/IGHERE ALIUN HOLESSOWN SOLOI / LINE GUISEBERG I/S CRANK II AIRFOIL HIGH POINT USE 002 WIRE LEADOUTS III\.I---WING SHEET BALSA MEDIUM I/IA PLO BINS RECESSED INTO WING I USE 2-56 BLIND MIG Io NUT B SCREW TO1F11 RETAIN BELLCRANHU --7 L WASHOUT TIP I/IA FROM THIS PT I/I6WIRE LU NOTEU TYPE TAIL GOLOBERS /SA HORN _________ON UNDERSIDE OF ELEVATOR SUGGEST SEWN DENTAL FLOSS HINGES 1/450 BASSNOTE ENUINE IS MOUNTEDH REINFORCEMENTSON SLANT WITH CYLINDER AND NEEDLE VALUE TO- RISHY OF CENTER LINE, DRILL I/BI/BPLY FIREWALLV" -HPLACES FORWINO~ 256BLIND--UT MOUNTING NUTSDESIGNED FOR COG 049 BLACK BELLCRANK MOUNT NYLON TAPE REINFORCEMENT IICOLORSCHEME CREAMOVER ALL DIG WHEELSRED WHITE BLUE RACING STRIPEAMA CLASS SCALE MOUSE RACER BLACK ANTI-GLARE NUMBERSSPAN lB 0/4 WEIGHT 5 5/4 O DESISNED BY FRANK SCOTT TOLEDO/ 83 TWENTY-NI NTH ANNUAL RADIO CONTROL EXPOSITI ON TOLEDO SPORTS ARENA ONE MAIN STREET TOLEDO OHIO Reserve April 8 9 10 1983 attend wolds greatest radio con trol model show featu ring worlds largest Swap Shops no dealers complete ref resh ment centers Saturday Night Auction raffles complete nc systems accessories acres free parking Bring latest com pletely finished models display enter com petition exciting awards Complete nc systems will presented first second third place win ners new Video Cassette Recorder will awarded lucky winner Best Show Open public three great days 89& FRIDAY9amto6pm SATURDAY 9am to6pm SUNDAY 9am to43Opm presented Weak Signals RIC Club PO Box 5772 Toledo Ohio 43613 Propeller cont 0030 suggested Assume E 085 calculate MPH using HP value engine 10cc power curve proceed follows 1 Align edge HP RPM values taken engine curve 2 Place T-pin L intersection pivot edge right side aligns calculated MPH value 3 Read J J scale calculate diameter pitch shown 4 Determine F thrust before propellers will attain 85% effi ciency because low p/d general application MPH might need recal culated after first approximation results will quite accurate may proceed confidence carve oddball propeller described have accurate engine airframe drag data Just conform parameters defined earlier however play nomograph conjunction engine curve propeller efficiency curve will conclude typical 10cc engine Pattern airplane will get essentially equivalent performance using 10A x 7 .oranllx7.oranllx7.oran 11 x 8 About will change engine RPM Sky Baby/Scott Continued page 70 lot faster can run try land airplane about quarter eighth lap short him can save lot time round Tips pitmen model touches down will travelling pretty fast biggest target strongest part As engine its mounting seems pretty good trick field dead-stick though moving airplane its nose filled fuel syringe held left hand already wired starting thus leaving right hand free catching Fly smooth race Sky-Baby well soon see winners circle Materials list 1 x 3 x 36 Balsa hardFuselage 1 x 3 x 36 Balsa lightWing 11/16 x 2 x 18 BassTail 1 x Wing tail skid mount 1/32 PlywoodDoublers 1/12 PlywoodWing mount PlywoodFirewall 062 Diameter wireLanding gear 045 Diameter wirePushrod 032 Diameter wireTail skid 025 Diameter wireLead-outs 5-Minute epoxy glue Hot Stuff Goldberg control horn set Goldberg nylon reinforcing tape 2-56 Blind mounting nuts 5 2-56 x -in Screws 5 K&B Superpoxy Primer yellow clear Cox Black Widow engine Tomado 5-4 nylon prop FF Scale/Warner Continued page 57 prop shaft apply little heat match hot soldering iron contract neatly onto wire making hook wont cut rubber motor can used make winding tubes shrunk size bigger sizes used wiring hamesses retain flexibility toughness small bit shrunk end axle holds wheel Another hint Hot Stuff addicts involves what dam stuff wont set up youre tired waiting used blow fine baking soda dusting joint using just pinch between thumb first finger ground back forth blowing toward wet adhesive new product finding its way shelves hobby stores lifesaver time saver smell Ithink breathing may no good comes small bottle pump-tray nozzle used evapor ates almost instantly Although can used prep surfaces five bucks bottle prefer just save until need instant setting Its super-glue acceleratormakes cyanoacrylate glues set up almost instantly Several manufac turers ZAP Ace Hot Stuff market Make own planes own wheels local surplus auto parts store hardware store two can relied stock variety sizes 0 rings make great-looking tires gas jobs weight factor Peanuts dont recommend clever rubber-motor hook-ons some guys use have seen couple break very inopportune times figure has enough trouble adding another thing go wrong Like simple weird models Dave Aronstein Mid-Hudson Model Masters Baron Von Heinigrabbers outfit has plans ranging ultralight Goldwing Miles Libellula has Peanut plans HE 100 Gipsy Moth Stinson Reliant Goon Monocoupe others Ive seen ultralights Cloudbuster fly claim two-minute model exaggerated Send him buck plans list put some fun back jaded existence Dave Aronstein 50 Pasture Lane Poughkeepsie NY 12603 address final hint day comes other neighbor pages Bob Meuser Bob pre-shrinks superfine tissue frame takes Sharpie pen art-supply store saws open guts containing ink sloshed around small pan lacquer thinner about -in depth resulting mess swabbed onto tissue using absorbent material inside mop Bob says abbing back forth north south east west repeating plain lacquer thinner managed get fairly Somewhat similar results may obtained using Marks-a-Lot alcohol-based felt pen overlapping strokes fancy quick-and-dirty way get job done especially condenser paper Yellow seems work best Thanks great support 5 x 7 contrasty prints see too seldom hints share Bill Warner 423-C San Vicente Blvd Santa Monica CA 90402 SAFE FLYING IS NO ACCIDENT 168 Model Aviation