A proven trophy winner 09-powered Class Free Flight has near vertical climb flawless transition CLASS-A GAS hotly con tested event free-flight power competi tion today feel due number factors availability number good factory engines requiring tuning good manageable size model FAI power influence above spectacular per formance needs check entries A-gas Nats US Free Flight Champs Taft note con tests requiring fly-off settle final stand ings confirm popularity As free-flight models DixieGal came about effort build bet ter mousetrap always admired Geodetic Union Jack structures some time have eyed -A Galaxie Vic Cunningham Galaxie Clarence Haught Photos Tim Christie however apologies Vic always seemed overbuilt -A model re sisted temptation build design Later firming up new Class-A ship kept thinking rigid Galaxie surfaces new ship built around hot Cox TD09 happened have lying around 315 sq should just about right some time have flying Dixielander Class Dixielander George Fuller Eng lish equivalent Starduster English have flying small-field rules years have developed small highclimbing models capable handling large powerplants Dixielander using 350 sq in-wing powered Supertigre 15 anything boring So pattern set Galaxie-type surfaces Dixielander type fuselage mated together sized 09 engine christened Dixie-Gal resulting model presented has given great deal pleasure has added extensively trophy shelf elect build Dixie-Gal know will disappointed has near vertical climb gets up lift lurks transitions flawlessly spirited glide strive classic European look Right Typical English styling Union Jack Construction provides rigidity high-speed climb flutter problems Structure virtually warp-proof 34 Model Aviation Below High pylon long moment arm rear fin force layout handles high power output Cox TD 09 No down- side-thrust required configuration Author contemplates prop change Cox TD 09 handles 7/4 prop well Spectacular climb tailored new Category II rules Construction Wing Tail As free-flight models construction should begin flying surfaces may covered allowed cure out fuselage being fabricated havent built geodetic structures before start stabilizer work up wing like use white glue ap plied brush building structures such will find geodetic struc tures very rigid warp-free sure building flat surface built-in warps permanent Notch trailing edge ribs indicated pin plan along bot tom spar leading edge Fit straight ribs top center spar Next cut geo detic ribs spar location trim ex act length striving good tight fit spar main rib intersection dry notch geodetic ribs receive top front spar Line up notch location straightedge cut single-edge razor blade strip masking tape along side razor blade makes good depth reference Add tip plates gussets Fit 1/s dowel rubberband anchor center spar loca tion shown brace well scrap small plywood hole reinforcement trailing edge added after covering Wing construction follows essentially same procedure stabilizer few extra stepsI used detest plans half wing shown until began drawing plans publication became aware space limitations As builder have two options may build right wing shown grease plan cooking oil shortening make trans parent turn over build left wing build both panels once building right wing directly over plan left wing directly above right leading edges mated up mirror image effect system provides accurate rib spacing via notched training edge left panel mated leading edges Proceed construction stabilizer through straight rib stage omitting dihedral ribs Prior adding geodetic ribs warps called plan must initiated Cut wing panels apart dihedral joints block up outer end trailing edge tip panels 1/16 washout avoid tip stall prior complete stall wing Block up outer end right wing main panel leading edge /8 washin necessary compensate reduced lift produced inboard wing during right turning flight will help prevent right spiral dives under power strong thermal glide conditions left main panel built flat building board Install geodetic ribs except adjacent dihedral ribs completely dry remove wing panels board sand dihedral angles Secure main panJanuary 1977 35 Stabilizer tilts 45 degrees dethermalizing Remote fuse location works best rear fin force layouts Ship combines Class perform ance handling ease 1/2A ships I/IS RISS\ KEY3/IS X 1/4 LEADING EDGE N -- -------- --2~----------IdWX VS SPRUCE SF615 X 3/4 TRAILING EDGE 3/325 1/4 SFRUCE-J SPRUCE RESmAENT I/B NIB~\ YU SNEEr TIPS / lAS GREET BESETS 3/ISX 1/4 LEADING EDGE ~I6 S VS SPARE \7 /lB 5 3/4 TRAILING EDGE Al 1/32 PLY -I/S DOWEL IRDfOR VS UET GUSSETS A11/6 5 I/S I/S GREETSPRUCE 14TISAFISLE II I/M FIX MERO SAILON PILLETS J NOtE OFFSET 1/32 PLY---- Al Si XN / MUff S DETAIL I/S PLY FIREWALL LISt PLY DOIBILER ENDS HERE 4RFECT 96 RECTANIC MODIFY OUTLET II TO EXIT FWD TIRERjJ SOLDER 15flLEFT GIDE SEET RETAL 33211 3/32 SHEET DIHEDRAL DETAIL I/IS SHEET ll\\ /LMma8IOD\ TIP DETAIL IM IL B-I A 1 I/S DOWELJGRAIN LEFPYLON 3 LAMNAIlOIS SEE SECTION GRAINvu WWA GRAINRIGHTVBX MS CENTER FIREWALL I/B PLY\ MG SO 41 09 10 ENGINE TARE OUTLET0—LAISNNG SKE WING WARPS RGHT MAIN 1/S WAS14N LEFT MAIN FLAT TIPS IllS WASHOUT 3/32 X I/S Il\II/I PLY SPRUCE 1W ZZZZrrzn STABILIZER RIBS I/rn SHEET WINO RIBS I/IS SlEET I/U RUD 3/32 X S/S LONGERONS DIAGONALS ElrN v-- -DY LINE- SHEET/5 ALIBI --ISIDESFUEL TUBING DY STOP GET FOR 40 C/L CABLEWINS GUIOE 0I23456 FLY RIGHT RIGHT DIXIE GAL CLARENCE NAUGHT lAB PLAISGNG\ SPUT DOWEL KEY F6 R /7 N 3/32 SHEET TIPS 45 34 A L1132 PLYWOOD \-I/s SHEET 1/4 ALUIt SNIfFER TUBE Above A modified Perfect #6 Rectank inletted 1/32 ply fuselage doubler Husky skid protects model hard DT landings Right Wing keys pylon 1/8 dowel assuring positive alignment Fuse snuffer goes through fuselage allow instant fuse length adjust ments Tatone squeeze-off controls engine run Dixie-Gal els board Block up tip panels proper dihedral angle glue main panels thoroughly dry join main pan els center similar manner Allow dry add dihedral braces ribs center rib geodetic dihedral ribs center planking gussets Notch geodetic ribs install front spar surfaces now ready thor ough sanding Shape leading edges care fully maintain airfoil shown plan Employ sanding block long enough span three four ribs insure uniform ity Blend ribs trailing edge smoothly Work carefully taking care dam age structures corners sanding block Dust thoroughly Determine point what covering material plan use structure plenty adequate plastic films elect use proceed according manufacturers instructions recommend medium Silkspan wing main panels Japanese tissue wing tips stabilizer Prior cover ing paper predope perimeters structures two coats dope sanding after first coat Apply tissue covering water shrink apply two coats clear dope Cut trim colored Japanese tissue AMA numbers should applied thinner time Follow three coats clear dope wing two stabilizer Set flying surfaces aside cure prefer ably secured some sort jig holding fixture insure alignment Fuselage Before starting fuselage con struction study plan carefully order thoroughly familiar design Prefabrication certain parts subas semblies will aid overall progress Start construction pylon Cut center lamination 1/16 plywood Add outer laminations 3/32 sheet balsa bonded contact cement left balsa lamination ends engine mount Check plan proper grain direction will note pylon offset right allows engine thrust line centered mounts bonded directly plywood pylon core Secure 5/16 sq engine mount stock pylon assembly epoxy Space suit width engine being used Dont waste time try ing buy 5/16 sq engine mount stock hobby shop Have friend table saw rip oak maple Cut longeron diagonal stock medium 3/32 sheet Notch top bot tom rudder top pylon Glue up light 1/8 stock rudder sub-fin sembly dry cut shape add 1/16 /8 spruce hard edging Cut fuse lage sides medium 1/16 sheet Glue up some medium /8 stock wing rest Begin final fuselage assembly pinning right side plan sure building board flat curve will built right fuselage disastrous results Install longerons diagonal bracing Fill support pylon tank area shown plan right side detail Add py lon engine mount rudder-sub fin subassemblies Align /8 plywood firewall secure Add fill structural members pylon finally left fuselage side Let sembly dry thoroughly least overnight Remove fuselage board sand carefully Secure 1/32 plywood doublers front fuselage contact cement Check top pylon proper incidence angle install wing rest reinforcing triangle stock Wing runners hold-down dowels complete pylon Build up stabilizer rest install fuse lage Glide turn will controlled stab tilt recommend stab rest stalled built-in tilt align stabil izer right main wing panel will avoid lot unnecessary shimming later Purchase Perfect number six Rec tank Remove stock fuel outlet seal hole Install new fuel feed i/8in copper tubing picking up fuel bottom rear tank exiting front left corner near timer Cut openings fuselage plywood doublers tank timer Secure tank epoxy glue building fillet glue around tank Note tank projects out fuse lage approximately half tank depth Bend length /2-in aluminum tubing dethermalizer line guide install rear fuselage shown plan Add aluminum snuffer tube DT band hook forward fuselage location Sand fuselage well apply two coats dope cover plywood doublers aft Japanese tissue Cover balance lightweight fiberglass cloth silk ad hered dope continued page 82 January1977 37 1st RC Masters Class 1st RC Advanced 1st RC Novice 1st Formula Pylon 1st Quarter Midget Pylon 1st CL Stunt Open 1st CL Stunt Senior 1st CL Stunt Junior WORLD CHAMPIONSHIP 1976 HOLLAND 1st 2nd 3rd CL STUNT MORE 1976 NATIONALS 1st CL Combat Op & Sr 1st CL Slow Comb Op & Sr 1st CL Carrier II Op Jr Sr 1st CL Carrier Sr Jr 1st CL Class D Speed Open 1st CL Class C Speed Sr & Jr 1st CL Class B Speed Op& Sr 1st CL Cl ASpeed Op SrJr 1st CL Formula 40 Open 1st CL Class B Proto Jr 1st FF Class B Open 1st FF Class C Open HIGH PERFORMANCE * COMPETITION PROVEN * THIN RIGID BLADES OF HARD MAPLE WOOD * SUPERBLY FINISHED COMPLETELY FUEL PROOF SPECIAL PRO SERIES 2 FOQ RC-FREE FLIGHT CONTROL LINE DIAPITcHPRIcE 5%34e9 63459 733%4119 S3%456119 945677%129 10467139 106W ew139 10SEW149 114677% 7A7%5159 11SEW159 11%67169 126179 125W179 1356219 1456249 1556299 164%6379 W WIOE5LAOE EW EXTRA WIDE SERIES 400 B FOR SPEED NG AovANCED OESIGN NO 1 IN PYLON RAcING LEAOING SPEED RECORD HOLDER OF ALL TIMES RC PYLON RACING OIA PITCH PRICE 5/3%4119 7 55h6 129 7 SN 5%N SN 129 5% SA77A 169 9 5577% 169 CONTROL LINE EED& RACING DIA PITCH PRICE 4%657119 4%55%119 6755%129 77510% 11139 55149 59N 9%N149 5%77%149 91213199 N NARROW RC Helicopters continued storage problem usually store belt notches cut flange upper part cooling fan housing wont work Super-Baby because gets way collective bellcrank simple 1/16 music-wire clip made side fuselage plates see sketch has worked well no problems M/R pitch set plus 2 degrees full collective carburetor-needle valve richened tail-rotor speed lift-off 7000 rpms Super-Baby 48 M/R half-throttle stick half-carburetor barrel open per kit instructions Throt tle trim set half start full engage clutch shut off en gine full close Blade tracking checked brought dead simple turn ball joints pitch arm much needed welcome change everything checked out Super-Baby both ready fly First flight Super-Baby flew very first attempt took small trim change tail rotor fly hands off ran several tankfulls through ing take-offs landings hovering did things very well novice someone learning fly However translational flying left great deal desired will list some undesira ble things did case should read further will also tell Dixie-Gal/Haught continued page 37 Apply two coats dope add microballoon fillets around base pylon desired Continue finish trim until desired effect achieved Fabricate landing skid 3/32 music wire install fuselage Make up DT line control-line cable Rig stop using short piece fuel tubing tied DT line bear against aluminum tube line guide rear fuselage 40-degree stab pop up will bring Dixie-Gal down damage Check alignment pylon rudder straightedge taut thread held against edge pylon alignment rudder perfect correct neces sary Band wing align carefully measuring base rudder tips satisfied square install wing keys Mount engine 7-4 prop timer fuel line Assemble complete airplane check CG Model should balance ard wing trailing edge Ballast necessary Nose weight can added securing sheet lead under engine mount screws within fuselage beneath timer Make final check specified warps undesirable character istics have eliminated now really super Super-Baby Undesirable Characteristics I Collective undefined lift-off 2 Causes helicopter swim lift-offs 3 Blade speed constant 4 Helicopter porpoising hover flight 5 Very sluggish cyclic control 6 Hard turn stop 7 Obvious need tail-rotor mix 8 Excessive head tilt before fuselage follows 9 Reduction collective causes instant reduction blade speed Fortunately have quite lot experience Schluter collective head Gazelle problems quickly recognized solutions hard come Next months column will deal solutions one Helicopter Holdouts have holding off getting RC helicopters cause price Kavan has announced new prices Jet Ranger $32000 Alouette $16000 am sure prices will never lower now time RC helicopters no longer mys tery part help may need now readily available Just call will see Walt Schoonard 2080 Sharon Rd Winter Park FL 32789 Phone 305 4221531 days 305 647-1335 nights time may occur you view assembled model may have created monster Half-A-size model twice normal engine size may feel inclined wear hard hat have pre-dug fox hole near launch site Let assure will necessary Flight Testing may begin few hand glides over legendary tall grass However personally have never located phenomena Actually couple tosses determine model n ither diving stalling sufficient Hand gliding cant really tell much too variables exist Glide trim best worked out after power pattern established Dixie-Gal should tested full power using fuel prop plan use competition first flight launch 60-degree angle slightly right wind right wing down slightly three-second engine run model should move out smartly maintaining 60-degree climbing angle should turn approximately onequarter turn right Try remember exactly what happened test flight Transition may may good such short engine run speed will built up normal Glide point should safe Use 30-second DT fuse avoid extensive chasing 82 Model Aviation OUT- PERFORMS ALL OTHERS AT THE 1976 NATIONALS well continue increase engine run two second increments until nine seconds reached Transition should good five-second run no later seven seconds Three-quarters turn nine sec onds about right Climb angle will crease speed builds turn will im prove transition Glide should just above stalling speed calm days slightly faster rough air Make adjustments time according following four basic rules Climb Turnrudder tab Use 1/16 X alsa shaped like trailing edge stock glue side rudder trailing edge Pylon models must turn right under power Climb Anglestab incidence Raise trailing edge increase Raise leading edge decrease Shim matchbook cover plywood 1/32 time Glide Turnstab tilt Model will turn toward high tip Right tip high right turn Should about right main wing panel Glide Angleshift CG Add lead tail slow glide add lead nose increase speed above trim changes will act inde pendently another excep tion stabilizer tilt shim placed under end stab rest will have effect one-half shim thickness being placed under stab lead ing edge center will reduce climb angle Removal stab tilt shims will have reverse effect will increase climb angle Fly Dixie-Gal often thoroughly familiar flight characteristics Enter competition chance can Dixie-Gal has won several trophies can same TIMER CL Scale/Stott continued page 30 After filler has sanded smooth time add surface detailing such panel markings rivets hatches etc good base sanding sealer primers very little fin ish color paint will necessary cover model like add tint finish ing color sanding sealer primer obtain still better paint covering may think awful amount work involved building model will definitely pay off re ceive 1st place trophy Some time ago received letter Bob Jones Long Beach Calif sent some pictures Me-109K Bob formed model fiberglass wings control surfaces said really enjoys working fiber glass Working fiberglass requires 000 S 0 S 0 0 0 0 0 S S S 0 S 0 0 S 0 S S S S S S S S S S S 0 S S 0 0 S 0 0 0 Features include ABC Piston Liner Ball Bearings Perry Carburetor Flywheel gned cup electric starter Underwater Pick-up Integral Cavitation Plate Skeg Tough Transom Mounting Plate withstand stress flat-out racing different style building since wooden plug made first female mold first positive Bob didnt want engine parts visible spent quite bit time energy local machine shop devising right-angle gear drive engine engine McCoy 60 rigged run backwards through two gears prop will turn correct direction also has retracts shock absorbing retractable tail wheel hatches spring loaded hinged Bob estimates should weigh 7 8 lbs finished has working Me109K two years true test patience Mike F Stott 118 E Wheeler St N Mankato MN S6001 006 6 6 S S S 0 S S S S 0 S 0 S 0 S 0 S S 0 0 0 S S 0 S 0 0 0 0 0 S 0 S 0 0 0 0 S 0 THE 35cc 21 OUTBOARD Heres tough hot K & B 35cc 21 engine. member family first its kind . destined set pace other engines will follow water-cooled competition engine ultimate outboard engines Fast powerful easy install . simple 4 BOLT INSTALLATION off running January1977 83 Modeler Has Everything Will Appreciate Langleys Model Aero Engine 1903 Robert Meyer Curator National Air & Space Museum Smithsonian Institution Illustrated orical Collectors Item $500 Cumberland Press 4926 Del Ray Avenue Bethesda Maryland 20014
Edition: Model Aviation - 1977/01
Page Numbers: 34, 35, 36, 37, 82, 83
A proven trophy winner 09-powered Class Free Flight has near vertical climb flawless transition CLASS-A GAS hotly con tested event free-flight power competi tion today feel due number factors availability number good factory engines requiring tuning good manageable size model FAI power influence above spectacular per formance needs check entries A-gas Nats US Free Flight Champs Taft note con tests requiring fly-off settle final stand ings confirm popularity As free-flight models DixieGal came about effort build bet ter mousetrap always admired Geodetic Union Jack structures some time have eyed -A Galaxie Vic Cunningham Galaxie Clarence Haught Photos Tim Christie however apologies Vic always seemed overbuilt -A model re sisted temptation build design Later firming up new Class-A ship kept thinking rigid Galaxie surfaces new ship built around hot Cox TD09 happened have lying around 315 sq should just about right some time have flying Dixielander Class Dixielander George Fuller Eng lish equivalent Starduster English have flying small-field rules years have developed small highclimbing models capable handling large powerplants Dixielander using 350 sq in-wing powered Supertigre 15 anything boring So pattern set Galaxie-type surfaces Dixielander type fuselage mated together sized 09 engine christened Dixie-Gal resulting model presented has given great deal pleasure has added extensively trophy shelf elect build Dixie-Gal know will disappointed has near vertical climb gets up lift lurks transitions flawlessly spirited glide strive classic European look Right Typical English styling Union Jack Construction provides rigidity high-speed climb flutter problems Structure virtually warp-proof 34 Model Aviation Below High pylon long moment arm rear fin force layout handles high power output Cox TD 09 No down- side-thrust required configuration Author contemplates prop change Cox TD 09 handles 7/4 prop well Spectacular climb tailored new Category II rules Construction Wing Tail As free-flight models construction should begin flying surfaces may covered allowed cure out fuselage being fabricated havent built geodetic structures before start stabilizer work up wing like use white glue ap plied brush building structures such will find geodetic struc tures very rigid warp-free sure building flat surface built-in warps permanent Notch trailing edge ribs indicated pin plan along bot tom spar leading edge Fit straight ribs top center spar Next cut geo detic ribs spar location trim ex act length striving good tight fit spar main rib intersection dry notch geodetic ribs receive top front spar Line up notch location straightedge cut single-edge razor blade strip masking tape along side razor blade makes good depth reference Add tip plates gussets Fit 1/s dowel rubberband anchor center spar loca tion shown brace well scrap small plywood hole reinforcement trailing edge added after covering Wing construction follows essentially same procedure stabilizer few extra stepsI used detest plans half wing shown until began drawing plans publication became aware space limitations As builder have two options may build right wing shown grease plan cooking oil shortening make trans parent turn over build left wing build both panels once building right wing directly over plan left wing directly above right leading edges mated up mirror image effect system provides accurate rib spacing via notched training edge left panel mated leading edges Proceed construction stabilizer through straight rib stage omitting dihedral ribs Prior adding geodetic ribs warps called plan must initiated Cut wing panels apart dihedral joints block up outer end trailing edge tip panels 1/16 washout avoid tip stall prior complete stall wing Block up outer end right wing main panel leading edge /8 washin necessary compensate reduced lift produced inboard wing during right turning flight will help prevent right spiral dives under power strong thermal glide conditions left main panel built flat building board Install geodetic ribs except adjacent dihedral ribs completely dry remove wing panels board sand dihedral angles Secure main panJanuary 1977 35 Stabilizer tilts 45 degrees dethermalizing Remote fuse location works best rear fin force layouts Ship combines Class perform ance handling ease 1/2A ships I/IS RISS\ KEY3/IS X 1/4 LEADING EDGE N -- -------- --2~----------IdWX VS SPRUCE SF615 X 3/4 TRAILING EDGE 3/325 1/4 SFRUCE-J SPRUCE RESmAENT I/B NIB~\ YU SNEEr TIPS / lAS GREET BESETS 3/ISX 1/4 LEADING EDGE ~I6 S VS SPARE \7 /lB 5 3/4 TRAILING EDGE Al 1/32 PLY -I/S DOWEL IRDfOR VS UET GUSSETS A11/6 5 I/S I/S GREETSPRUCE 14TISAFISLE II I/M FIX MERO SAILON PILLETS J NOtE OFFSET 1/32 PLY---- Al Si XN / MUff S DETAIL I/S PLY FIREWALL LISt PLY DOIBILER ENDS HERE 4RFECT 96 RECTANIC MODIFY OUTLET II TO EXIT FWD TIRERjJ SOLDER 15flLEFT GIDE SEET RETAL 33211 3/32 SHEET DIHEDRAL DETAIL I/IS SHEET ll\\ /LMma8IOD\ TIP DETAIL IM IL B-I A 1 I/S DOWELJGRAIN LEFPYLON 3 LAMNAIlOIS SEE SECTION GRAINvu WWA GRAINRIGHTVBX MS CENTER FIREWALL I/B PLY\ MG SO 41 09 10 ENGINE TARE OUTLET0—LAISNNG SKE WING WARPS RGHT MAIN 1/S WAS14N LEFT MAIN FLAT TIPS IllS WASHOUT 3/32 X I/S Il\II/I PLY SPRUCE 1W ZZZZrrzn STABILIZER RIBS I/rn SHEET WINO RIBS I/IS SlEET I/U RUD 3/32 X S/S LONGERONS DIAGONALS ElrN v-- -DY LINE- SHEET/5 ALIBI --ISIDESFUEL TUBING DY STOP GET FOR 40 C/L CABLEWINS GUIOE 0I23456 FLY RIGHT RIGHT DIXIE GAL CLARENCE NAUGHT lAB PLAISGNG\ SPUT DOWEL KEY F6 R /7 N 3/32 SHEET TIPS 45 34 A L1132 PLYWOOD \-I/s SHEET 1/4 ALUIt SNIfFER TUBE Above A modified Perfect #6 Rectank inletted 1/32 ply fuselage doubler Husky skid protects model hard DT landings Right Wing keys pylon 1/8 dowel assuring positive alignment Fuse snuffer goes through fuselage allow instant fuse length adjust ments Tatone squeeze-off controls engine run Dixie-Gal els board Block up tip panels proper dihedral angle glue main panels thoroughly dry join main pan els center similar manner Allow dry add dihedral braces ribs center rib geodetic dihedral ribs center planking gussets Notch geodetic ribs install front spar surfaces now ready thor ough sanding Shape leading edges care fully maintain airfoil shown plan Employ sanding block long enough span three four ribs insure uniform ity Blend ribs trailing edge smoothly Work carefully taking care dam age structures corners sanding block Dust thoroughly Determine point what covering material plan use structure plenty adequate plastic films elect use proceed according manufacturers instructions recommend medium Silkspan wing main panels Japanese tissue wing tips stabilizer Prior cover ing paper predope perimeters structures two coats dope sanding after first coat Apply tissue covering water shrink apply two coats clear dope Cut trim colored Japanese tissue AMA numbers should applied thinner time Follow three coats clear dope wing two stabilizer Set flying surfaces aside cure prefer ably secured some sort jig holding fixture insure alignment Fuselage Before starting fuselage con struction study plan carefully order thoroughly familiar design Prefabrication certain parts subas semblies will aid overall progress Start construction pylon Cut center lamination 1/16 plywood Add outer laminations 3/32 sheet balsa bonded contact cement left balsa lamination ends engine mount Check plan proper grain direction will note pylon offset right allows engine thrust line centered mounts bonded directly plywood pylon core Secure 5/16 sq engine mount stock pylon assembly epoxy Space suit width engine being used Dont waste time try ing buy 5/16 sq engine mount stock hobby shop Have friend table saw rip oak maple Cut longeron diagonal stock medium 3/32 sheet Notch top bot tom rudder top pylon Glue up light 1/8 stock rudder sub-fin sembly dry cut shape add 1/16 /8 spruce hard edging Cut fuse lage sides medium 1/16 sheet Glue up some medium /8 stock wing rest Begin final fuselage assembly pinning right side plan sure building board flat curve will built right fuselage disastrous results Install longerons diagonal bracing Fill support pylon tank area shown plan right side detail Add py lon engine mount rudder-sub fin subassemblies Align /8 plywood firewall secure Add fill structural members pylon finally left fuselage side Let sembly dry thoroughly least overnight Remove fuselage board sand carefully Secure 1/32 plywood doublers front fuselage contact cement Check top pylon proper incidence angle install wing rest reinforcing triangle stock Wing runners hold-down dowels complete pylon Build up stabilizer rest install fuse lage Glide turn will controlled stab tilt recommend stab rest stalled built-in tilt align stabil izer right main wing panel will avoid lot unnecessary shimming later Purchase Perfect number six Rec tank Remove stock fuel outlet seal hole Install new fuel feed i/8in copper tubing picking up fuel bottom rear tank exiting front left corner near timer Cut openings fuselage plywood doublers tank timer Secure tank epoxy glue building fillet glue around tank Note tank projects out fuse lage approximately half tank depth Bend length /2-in aluminum tubing dethermalizer line guide install rear fuselage shown plan Add aluminum snuffer tube DT band hook forward fuselage location Sand fuselage well apply two coats dope cover plywood doublers aft Japanese tissue Cover balance lightweight fiberglass cloth silk ad hered dope continued page 82 January1977 37 1st RC Masters Class 1st RC Advanced 1st RC Novice 1st Formula Pylon 1st Quarter Midget Pylon 1st CL Stunt Open 1st CL Stunt Senior 1st CL Stunt Junior WORLD CHAMPIONSHIP 1976 HOLLAND 1st 2nd 3rd CL STUNT MORE 1976 NATIONALS 1st CL Combat Op & Sr 1st CL Slow Comb Op & Sr 1st CL Carrier II Op Jr Sr 1st CL Carrier Sr Jr 1st CL Class D Speed Open 1st CL Class C Speed Sr & Jr 1st CL Class B Speed Op& Sr 1st CL Cl ASpeed Op SrJr 1st CL Formula 40 Open 1st CL Class B Proto Jr 1st FF Class B Open 1st FF Class C Open HIGH PERFORMANCE * COMPETITION PROVEN * THIN RIGID BLADES OF HARD MAPLE WOOD * SUPERBLY FINISHED COMPLETELY FUEL PROOF SPECIAL PRO SERIES 2 FOQ RC-FREE FLIGHT CONTROL LINE DIAPITcHPRIcE 5%34e9 63459 733%4119 S3%456119 945677%129 10467139 106W ew139 10SEW149 114677% 7A7%5159 11SEW159 11%67169 126179 125W179 1356219 1456249 1556299 164%6379 W WIOE5LAOE EW EXTRA WIDE SERIES 400 B FOR SPEED NG AovANCED OESIGN NO 1 IN PYLON RAcING LEAOING SPEED RECORD HOLDER OF ALL TIMES RC PYLON RACING OIA PITCH PRICE 5/3%4119 7 55h6 129 7 SN 5%N SN 129 5% SA77A 169 9 5577% 169 CONTROL LINE EED& RACING DIA PITCH PRICE 4%657119 4%55%119 6755%129 77510% 11139 55149 59N 9%N149 5%77%149 91213199 N NARROW RC Helicopters continued storage problem usually store belt notches cut flange upper part cooling fan housing wont work Super-Baby because gets way collective bellcrank simple 1/16 music-wire clip made side fuselage plates see sketch has worked well no problems M/R pitch set plus 2 degrees full collective carburetor-needle valve richened tail-rotor speed lift-off 7000 rpms Super-Baby 48 M/R half-throttle stick half-carburetor barrel open per kit instructions Throt tle trim set half start full engage clutch shut off en gine full close Blade tracking checked brought dead simple turn ball joints pitch arm much needed welcome change everything checked out Super-Baby both ready fly First flight Super-Baby flew very first attempt took small trim change tail rotor fly hands off ran several tankfulls through ing take-offs landings hovering did things very well novice someone learning fly However translational flying left great deal desired will list some undesira ble things did case should read further will also tell Dixie-Gal/Haught continued page 37 Apply two coats dope add microballoon fillets around base pylon desired Continue finish trim until desired effect achieved Fabricate landing skid 3/32 music wire install fuselage Make up DT line control-line cable Rig stop using short piece fuel tubing tied DT line bear against aluminum tube line guide rear fuselage 40-degree stab pop up will bring Dixie-Gal down damage Check alignment pylon rudder straightedge taut thread held against edge pylon alignment rudder perfect correct neces sary Band wing align carefully measuring base rudder tips satisfied square install wing keys Mount engine 7-4 prop timer fuel line Assemble complete airplane check CG Model should balance ard wing trailing edge Ballast necessary Nose weight can added securing sheet lead under engine mount screws within fuselage beneath timer Make final check specified warps undesirable character istics have eliminated now really super Super-Baby Undesirable Characteristics I Collective undefined lift-off 2 Causes helicopter swim lift-offs 3 Blade speed constant 4 Helicopter porpoising hover flight 5 Very sluggish cyclic control 6 Hard turn stop 7 Obvious need tail-rotor mix 8 Excessive head tilt before fuselage follows 9 Reduction collective causes instant reduction blade speed Fortunately have quite lot experience Schluter collective head Gazelle problems quickly recognized solutions hard come Next months column will deal solutions one Helicopter Holdouts have holding off getting RC helicopters cause price Kavan has announced new prices Jet Ranger $32000 Alouette $16000 am sure prices will never lower now time RC helicopters no longer mys tery part help may need now readily available Just call will see Walt Schoonard 2080 Sharon Rd Winter Park FL 32789 Phone 305 4221531 days 305 647-1335 nights time may occur you view assembled model may have created monster Half-A-size model twice normal engine size may feel inclined wear hard hat have pre-dug fox hole near launch site Let assure will necessary Flight Testing may begin few hand glides over legendary tall grass However personally have never located phenomena Actually couple tosses determine model n ither diving stalling sufficient Hand gliding cant really tell much too variables exist Glide trim best worked out after power pattern established Dixie-Gal should tested full power using fuel prop plan use competition first flight launch 60-degree angle slightly right wind right wing down slightly three-second engine run model should move out smartly maintaining 60-degree climbing angle should turn approximately onequarter turn right Try remember exactly what happened test flight Transition may may good such short engine run speed will built up normal Glide point should safe Use 30-second DT fuse avoid extensive chasing 82 Model Aviation OUT- PERFORMS ALL OTHERS AT THE 1976 NATIONALS well continue increase engine run two second increments until nine seconds reached Transition should good five-second run no later seven seconds Three-quarters turn nine sec onds about right Climb angle will crease speed builds turn will im prove transition Glide should just above stalling speed calm days slightly faster rough air Make adjustments time according following four basic rules Climb Turnrudder tab Use 1/16 X alsa shaped like trailing edge stock glue side rudder trailing edge Pylon models must turn right under power Climb Anglestab incidence Raise trailing edge increase Raise leading edge decrease Shim matchbook cover plywood 1/32 time Glide Turnstab tilt Model will turn toward high tip Right tip high right turn Should about right main wing panel Glide Angleshift CG Add lead tail slow glide add lead nose increase speed above trim changes will act inde pendently another excep tion stabilizer tilt shim placed under end stab rest will have effect one-half shim thickness being placed under stab lead ing edge center will reduce climb angle Removal stab tilt shims will have reverse effect will increase climb angle Fly Dixie-Gal often thoroughly familiar flight characteristics Enter competition chance can Dixie-Gal has won several trophies can same TIMER CL Scale/Stott continued page 30 After filler has sanded smooth time add surface detailing such panel markings rivets hatches etc good base sanding sealer primers very little fin ish color paint will necessary cover model like add tint finish ing color sanding sealer primer obtain still better paint covering may think awful amount work involved building model will definitely pay off re ceive 1st place trophy Some time ago received letter Bob Jones Long Beach Calif sent some pictures Me-109K Bob formed model fiberglass wings control surfaces said really enjoys working fiber glass Working fiberglass requires 000 S 0 S 0 0 0 0 0 S S S 0 S 0 0 S 0 S S S S S S S S S S S 0 S S 0 0 S 0 0 0 Features include ABC Piston Liner Ball Bearings Perry Carburetor Flywheel gned cup electric starter Underwater Pick-up Integral Cavitation Plate Skeg Tough Transom Mounting Plate withstand stress flat-out racing different style building since wooden plug made first female mold first positive Bob didnt want engine parts visible spent quite bit time energy local machine shop devising right-angle gear drive engine engine McCoy 60 rigged run backwards through two gears prop will turn correct direction also has retracts shock absorbing retractable tail wheel hatches spring loaded hinged Bob estimates should weigh 7 8 lbs finished has working Me109K two years true test patience Mike F Stott 118 E Wheeler St N Mankato MN S6001 006 6 6 S S S 0 S S S S 0 S 0 S 0 S 0 S S 0 0 0 S S 0 S 0 0 0 0 0 S 0 S 0 0 0 0 S 0 THE 35cc 21 OUTBOARD Heres tough hot K & B 35cc 21 engine. member family first its kind . destined set pace other engines will follow water-cooled competition engine ultimate outboard engines Fast powerful easy install . simple 4 BOLT INSTALLATION off running January1977 83 Modeler Has Everything Will Appreciate Langleys Model Aero Engine 1903 Robert Meyer Curator National Air & Space Museum Smithsonian Institution Illustrated orical Collectors Item $500 Cumberland Press 4926 Del Ray Avenue Bethesda Maryland 20014
Edition: Model Aviation - 1977/01
Page Numbers: 34, 35, 36, 37, 82, 83
A proven trophy winner 09-powered Class Free Flight has near vertical climb flawless transition CLASS-A GAS hotly con tested event free-flight power competi tion today feel due number factors availability number good factory engines requiring tuning good manageable size model FAI power influence above spectacular per formance needs check entries A-gas Nats US Free Flight Champs Taft note con tests requiring fly-off settle final stand ings confirm popularity As free-flight models DixieGal came about effort build bet ter mousetrap always admired Geodetic Union Jack structures some time have eyed -A Galaxie Vic Cunningham Galaxie Clarence Haught Photos Tim Christie however apologies Vic always seemed overbuilt -A model re sisted temptation build design Later firming up new Class-A ship kept thinking rigid Galaxie surfaces new ship built around hot Cox TD09 happened have lying around 315 sq should just about right some time have flying Dixielander Class Dixielander George Fuller Eng lish equivalent Starduster English have flying small-field rules years have developed small highclimbing models capable handling large powerplants Dixielander using 350 sq in-wing powered Supertigre 15 anything boring So pattern set Galaxie-type surfaces Dixielander type fuselage mated together sized 09 engine christened Dixie-Gal resulting model presented has given great deal pleasure has added extensively trophy shelf elect build Dixie-Gal know will disappointed has near vertical climb gets up lift lurks transitions flawlessly spirited glide strive classic European look Right Typical English styling Union Jack Construction provides rigidity high-speed climb flutter problems Structure virtually warp-proof 34 Model Aviation Below High pylon long moment arm rear fin force layout handles high power output Cox TD 09 No down- side-thrust required configuration Author contemplates prop change Cox TD 09 handles 7/4 prop well Spectacular climb tailored new Category II rules Construction Wing Tail As free-flight models construction should begin flying surfaces may covered allowed cure out fuselage being fabricated havent built geodetic structures before start stabilizer work up wing like use white glue ap plied brush building structures such will find geodetic struc tures very rigid warp-free sure building flat surface built-in warps permanent Notch trailing edge ribs indicated pin plan along bot tom spar leading edge Fit straight ribs top center spar Next cut geo detic ribs spar location trim ex act length striving good tight fit spar main rib intersection dry notch geodetic ribs receive top front spar Line up notch location straightedge cut single-edge razor blade strip masking tape along side razor blade makes good depth reference Add tip plates gussets Fit 1/s dowel rubberband anchor center spar loca tion shown brace well scrap small plywood hole reinforcement trailing edge added after covering Wing construction follows essentially same procedure stabilizer few extra stepsI used detest plans half wing shown until began drawing plans publication became aware space limitations As builder have two options may build right wing shown grease plan cooking oil shortening make trans parent turn over build left wing build both panels once building right wing directly over plan left wing directly above right leading edges mated up mirror image effect system provides accurate rib spacing via notched training edge left panel mated leading edges Proceed construction stabilizer through straight rib stage omitting dihedral ribs Prior adding geodetic ribs warps called plan must initiated Cut wing panels apart dihedral joints block up outer end trailing edge tip panels 1/16 washout avoid tip stall prior complete stall wing Block up outer end right wing main panel leading edge /8 washin necessary compensate reduced lift produced inboard wing during right turning flight will help prevent right spiral dives under power strong thermal glide conditions left main panel built flat building board Install geodetic ribs except adjacent dihedral ribs completely dry remove wing panels board sand dihedral angles Secure main panJanuary 1977 35 Stabilizer tilts 45 degrees dethermalizing Remote fuse location works best rear fin force layouts Ship combines Class perform ance handling ease 1/2A ships I/IS RISS\ KEY3/IS X 1/4 LEADING EDGE N -- -------- --2~----------IdWX VS SPRUCE SF615 X 3/4 TRAILING EDGE 3/325 1/4 SFRUCE-J SPRUCE RESmAENT I/B NIB~\ YU SNEEr TIPS / lAS GREET BESETS 3/ISX 1/4 LEADING EDGE ~I6 S VS SPARE \7 /lB 5 3/4 TRAILING EDGE Al 1/32 PLY -I/S DOWEL IRDfOR VS UET GUSSETS A11/6 5 I/S I/S GREETSPRUCE 14TISAFISLE II I/M FIX MERO SAILON PILLETS J NOtE OFFSET 1/32 PLY---- Al Si XN / MUff S DETAIL I/S PLY FIREWALL LISt PLY DOIBILER ENDS HERE 4RFECT 96 RECTANIC MODIFY OUTLET II TO EXIT FWD TIRERjJ SOLDER 15flLEFT GIDE SEET RETAL 33211 3/32 SHEET DIHEDRAL DETAIL I/IS SHEET ll\\ /LMma8IOD\ TIP DETAIL IM IL B-I A 1 I/S DOWELJGRAIN LEFPYLON 3 LAMNAIlOIS SEE SECTION GRAINvu WWA GRAINRIGHTVBX MS CENTER FIREWALL I/B PLY\ MG SO 41 09 10 ENGINE TARE OUTLET0—LAISNNG SKE WING WARPS RGHT MAIN 1/S WAS14N LEFT MAIN FLAT TIPS IllS WASHOUT 3/32 X I/S Il\II/I PLY SPRUCE 1W ZZZZrrzn STABILIZER RIBS I/rn SHEET WINO RIBS I/IS SlEET I/U RUD 3/32 X S/S LONGERONS DIAGONALS ElrN v-- -DY LINE- SHEET/5 ALIBI --ISIDESFUEL TUBING DY STOP GET FOR 40 C/L CABLEWINS GUIOE 0I23456 FLY RIGHT RIGHT DIXIE GAL CLARENCE NAUGHT lAB PLAISGNG\ SPUT DOWEL KEY F6 R /7 N 3/32 SHEET TIPS 45 34 A L1132 PLYWOOD \-I/s SHEET 1/4 ALUIt SNIfFER TUBE Above A modified Perfect #6 Rectank inletted 1/32 ply fuselage doubler Husky skid protects model hard DT landings Right Wing keys pylon 1/8 dowel assuring positive alignment Fuse snuffer goes through fuselage allow instant fuse length adjust ments Tatone squeeze-off controls engine run Dixie-Gal els board Block up tip panels proper dihedral angle glue main panels thoroughly dry join main pan els center similar manner Allow dry add dihedral braces ribs center rib geodetic dihedral ribs center planking gussets Notch geodetic ribs install front spar surfaces now ready thor ough sanding Shape leading edges care fully maintain airfoil shown plan Employ sanding block long enough span three four ribs insure uniform ity Blend ribs trailing edge smoothly Work carefully taking care dam age structures corners sanding block Dust thoroughly Determine point what covering material plan use structure plenty adequate plastic films elect use proceed according manufacturers instructions recommend medium Silkspan wing main panels Japanese tissue wing tips stabilizer Prior cover ing paper predope perimeters structures two coats dope sanding after first coat Apply tissue covering water shrink apply two coats clear dope Cut trim colored Japanese tissue AMA numbers should applied thinner time Follow three coats clear dope wing two stabilizer Set flying surfaces aside cure prefer ably secured some sort jig holding fixture insure alignment Fuselage Before starting fuselage con struction study plan carefully order thoroughly familiar design Prefabrication certain parts subas semblies will aid overall progress Start construction pylon Cut center lamination 1/16 plywood Add outer laminations 3/32 sheet balsa bonded contact cement left balsa lamination ends engine mount Check plan proper grain direction will note pylon offset right allows engine thrust line centered mounts bonded directly plywood pylon core Secure 5/16 sq engine mount stock pylon assembly epoxy Space suit width engine being used Dont waste time try ing buy 5/16 sq engine mount stock hobby shop Have friend table saw rip oak maple Cut longeron diagonal stock medium 3/32 sheet Notch top bot tom rudder top pylon Glue up light 1/8 stock rudder sub-fin sembly dry cut shape add 1/16 /8 spruce hard edging Cut fuse lage sides medium 1/16 sheet Glue up some medium /8 stock wing rest Begin final fuselage assembly pinning right side plan sure building board flat curve will built right fuselage disastrous results Install longerons diagonal bracing Fill support pylon tank area shown plan right side detail Add py lon engine mount rudder-sub fin subassemblies Align /8 plywood firewall secure Add fill structural members pylon finally left fuselage side Let sembly dry thoroughly least overnight Remove fuselage board sand carefully Secure 1/32 plywood doublers front fuselage contact cement Check top pylon proper incidence angle install wing rest reinforcing triangle stock Wing runners hold-down dowels complete pylon Build up stabilizer rest install fuse lage Glide turn will controlled stab tilt recommend stab rest stalled built-in tilt align stabil izer right main wing panel will avoid lot unnecessary shimming later Purchase Perfect number six Rec tank Remove stock fuel outlet seal hole Install new fuel feed i/8in copper tubing picking up fuel bottom rear tank exiting front left corner near timer Cut openings fuselage plywood doublers tank timer Secure tank epoxy glue building fillet glue around tank Note tank projects out fuse lage approximately half tank depth Bend length /2-in aluminum tubing dethermalizer line guide install rear fuselage shown plan Add aluminum snuffer tube DT band hook forward fuselage location Sand fuselage well apply two coats dope cover plywood doublers aft Japanese tissue Cover balance lightweight fiberglass cloth silk ad hered dope continued page 82 January1977 37 1st RC Masters Class 1st RC Advanced 1st RC Novice 1st Formula Pylon 1st Quarter Midget Pylon 1st CL Stunt Open 1st CL Stunt Senior 1st CL Stunt Junior WORLD CHAMPIONSHIP 1976 HOLLAND 1st 2nd 3rd CL STUNT MORE 1976 NATIONALS 1st CL Combat Op & Sr 1st CL Slow Comb Op & Sr 1st CL Carrier II Op Jr Sr 1st CL Carrier Sr Jr 1st CL Class D Speed Open 1st CL Class C Speed Sr & Jr 1st CL Class B Speed Op& Sr 1st CL Cl ASpeed Op SrJr 1st CL Formula 40 Open 1st CL Class B Proto Jr 1st FF Class B Open 1st FF Class C Open HIGH PERFORMANCE * COMPETITION PROVEN * THIN RIGID BLADES OF HARD MAPLE WOOD * SUPERBLY FINISHED COMPLETELY FUEL PROOF SPECIAL PRO SERIES 2 FOQ RC-FREE FLIGHT CONTROL LINE DIAPITcHPRIcE 5%34e9 63459 733%4119 S3%456119 945677%129 10467139 106W ew139 10SEW149 114677% 7A7%5159 11SEW159 11%67169 126179 125W179 1356219 1456249 1556299 164%6379 W WIOE5LAOE EW EXTRA WIDE SERIES 400 B FOR SPEED NG AovANCED OESIGN NO 1 IN PYLON RAcING LEAOING SPEED RECORD HOLDER OF ALL TIMES RC PYLON RACING OIA PITCH PRICE 5/3%4119 7 55h6 129 7 SN 5%N SN 129 5% SA77A 169 9 5577% 169 CONTROL LINE EED& RACING DIA PITCH PRICE 4%657119 4%55%119 6755%129 77510% 11139 55149 59N 9%N149 5%77%149 91213199 N NARROW RC Helicopters continued storage problem usually store belt notches cut flange upper part cooling fan housing wont work Super-Baby because gets way collective bellcrank simple 1/16 music-wire clip made side fuselage plates see sketch has worked well no problems M/R pitch set plus 2 degrees full collective carburetor-needle valve richened tail-rotor speed lift-off 7000 rpms Super-Baby 48 M/R half-throttle stick half-carburetor barrel open per kit instructions Throt tle trim set half start full engage clutch shut off en gine full close Blade tracking checked brought dead simple turn ball joints pitch arm much needed welcome change everything checked out Super-Baby both ready fly First flight Super-Baby flew very first attempt took small trim change tail rotor fly hands off ran several tankfulls through ing take-offs landings hovering did things very well novice someone learning fly However translational flying left great deal desired will list some undesira ble things did case should read further will also tell Dixie-Gal/Haught continued page 37 Apply two coats dope add microballoon fillets around base pylon desired Continue finish trim until desired effect achieved Fabricate landing skid 3/32 music wire install fuselage Make up DT line control-line cable Rig stop using short piece fuel tubing tied DT line bear against aluminum tube line guide rear fuselage 40-degree stab pop up will bring Dixie-Gal down damage Check alignment pylon rudder straightedge taut thread held against edge pylon alignment rudder perfect correct neces sary Band wing align carefully measuring base rudder tips satisfied square install wing keys Mount engine 7-4 prop timer fuel line Assemble complete airplane check CG Model should balance ard wing trailing edge Ballast necessary Nose weight can added securing sheet lead under engine mount screws within fuselage beneath timer Make final check specified warps undesirable character istics have eliminated now really super Super-Baby Undesirable Characteristics I Collective undefined lift-off 2 Causes helicopter swim lift-offs 3 Blade speed constant 4 Helicopter porpoising hover flight 5 Very sluggish cyclic control 6 Hard turn stop 7 Obvious need tail-rotor mix 8 Excessive head tilt before fuselage follows 9 Reduction collective causes instant reduction blade speed Fortunately have quite lot experience Schluter collective head Gazelle problems quickly recognized solutions hard come Next months column will deal solutions one Helicopter Holdouts have holding off getting RC helicopters cause price Kavan has announced new prices Jet Ranger $32000 Alouette $16000 am sure prices will never lower now time RC helicopters no longer mys tery part help may need now readily available Just call will see Walt Schoonard 2080 Sharon Rd Winter Park FL 32789 Phone 305 4221531 days 305 647-1335 nights time may occur you view assembled model may have created monster Half-A-size model twice normal engine size may feel inclined wear hard hat have pre-dug fox hole near launch site Let assure will necessary Flight Testing may begin few hand glides over legendary tall grass However personally have never located phenomena Actually couple tosses determine model n ither diving stalling sufficient Hand gliding cant really tell much too variables exist Glide trim best worked out after power pattern established Dixie-Gal should tested full power using fuel prop plan use competition first flight launch 60-degree angle slightly right wind right wing down slightly three-second engine run model should move out smartly maintaining 60-degree climbing angle should turn approximately onequarter turn right Try remember exactly what happened test flight Transition may may good such short engine run speed will built up normal Glide point should safe Use 30-second DT fuse avoid extensive chasing 82 Model Aviation OUT- PERFORMS ALL OTHERS AT THE 1976 NATIONALS well continue increase engine run two second increments until nine seconds reached Transition should good five-second run no later seven seconds Three-quarters turn nine sec onds about right Climb angle will crease speed builds turn will im prove transition Glide should just above stalling speed calm days slightly faster rough air Make adjustments time according following four basic rules Climb Turnrudder tab Use 1/16 X alsa shaped like trailing edge stock glue side rudder trailing edge Pylon models must turn right under power Climb Anglestab incidence Raise trailing edge increase Raise leading edge decrease Shim matchbook cover plywood 1/32 time Glide Turnstab tilt Model will turn toward high tip Right tip high right turn Should about right main wing panel Glide Angleshift CG Add lead tail slow glide add lead nose increase speed above trim changes will act inde pendently another excep tion stabilizer tilt shim placed under end stab rest will have effect one-half shim thickness being placed under stab lead ing edge center will reduce climb angle Removal stab tilt shims will have reverse effect will increase climb angle Fly Dixie-Gal often thoroughly familiar flight characteristics Enter competition chance can Dixie-Gal has won several trophies can same TIMER CL Scale/Stott continued page 30 After filler has sanded smooth time add surface detailing such panel markings rivets hatches etc good base sanding sealer primers very little fin ish color paint will necessary cover model like add tint finish ing color sanding sealer primer obtain still better paint covering may think awful amount work involved building model will definitely pay off re ceive 1st place trophy Some time ago received letter Bob Jones Long Beach Calif sent some pictures Me-109K Bob formed model fiberglass wings control surfaces said really enjoys working fiber glass Working fiberglass requires 000 S 0 S 0 0 0 0 0 S S S 0 S 0 0 S 0 S S S S S S S S S S S 0 S S 0 0 S 0 0 0 Features include ABC Piston Liner Ball Bearings Perry Carburetor Flywheel gned cup electric starter Underwater Pick-up Integral Cavitation Plate Skeg Tough Transom Mounting Plate withstand stress flat-out racing different style building since wooden plug made first female mold first positive Bob didnt want engine parts visible spent quite bit time energy local machine shop devising right-angle gear drive engine engine McCoy 60 rigged run backwards through two gears prop will turn correct direction also has retracts shock absorbing retractable tail wheel hatches spring loaded hinged Bob estimates should weigh 7 8 lbs finished has working Me109K two years true test patience Mike F Stott 118 E Wheeler St N Mankato MN S6001 006 6 6 S S S 0 S S S S 0 S 0 S 0 S 0 S S 0 0 0 S S 0 S 0 0 0 0 0 S 0 S 0 0 0 0 S 0 THE 35cc 21 OUTBOARD Heres tough hot K & B 35cc 21 engine. member family first its kind . destined set pace other engines will follow water-cooled competition engine ultimate outboard engines Fast powerful easy install . simple 4 BOLT INSTALLATION off running January1977 83 Modeler Has Everything Will Appreciate Langleys Model Aero Engine 1903 Robert Meyer Curator National Air & Space Museum Smithsonian Institution Illustrated orical Collectors Item $500 Cumberland Press 4926 Del Ray Avenue Bethesda Maryland 20014
Edition: Model Aviation - 1977/01
Page Numbers: 34, 35, 36, 37, 82, 83
A proven trophy winner 09-powered Class Free Flight has near vertical climb flawless transition CLASS-A GAS hotly con tested event free-flight power competi tion today feel due number factors availability number good factory engines requiring tuning good manageable size model FAI power influence above spectacular per formance needs check entries A-gas Nats US Free Flight Champs Taft note con tests requiring fly-off settle final stand ings confirm popularity As free-flight models DixieGal came about effort build bet ter mousetrap always admired Geodetic Union Jack structures some time have eyed -A Galaxie Vic Cunningham Galaxie Clarence Haught Photos Tim Christie however apologies Vic always seemed overbuilt -A model re sisted temptation build design Later firming up new Class-A ship kept thinking rigid Galaxie surfaces new ship built around hot Cox TD09 happened have lying around 315 sq should just about right some time have flying Dixielander Class Dixielander George Fuller Eng lish equivalent Starduster English have flying small-field rules years have developed small highclimbing models capable handling large powerplants Dixielander using 350 sq in-wing powered Supertigre 15 anything boring So pattern set Galaxie-type surfaces Dixielander type fuselage mated together sized 09 engine christened Dixie-Gal resulting model presented has given great deal pleasure has added extensively trophy shelf elect build Dixie-Gal know will disappointed has near vertical climb gets up lift lurks transitions flawlessly spirited glide strive classic European look Right Typical English styling Union Jack Construction provides rigidity high-speed climb flutter problems Structure virtually warp-proof 34 Model Aviation Below High pylon long moment arm rear fin force layout handles high power output Cox TD 09 No down- side-thrust required configuration Author contemplates prop change Cox TD 09 handles 7/4 prop well Spectacular climb tailored new Category II rules Construction Wing Tail As free-flight models construction should begin flying surfaces may covered allowed cure out fuselage being fabricated havent built geodetic structures before start stabilizer work up wing like use white glue ap plied brush building structures such will find geodetic struc tures very rigid warp-free sure building flat surface built-in warps permanent Notch trailing edge ribs indicated pin plan along bot tom spar leading edge Fit straight ribs top center spar Next cut geo detic ribs spar location trim ex act length striving good tight fit spar main rib intersection dry notch geodetic ribs receive top front spar Line up notch location straightedge cut single-edge razor blade strip masking tape along side razor blade makes good depth reference Add tip plates gussets Fit 1/s dowel rubberband anchor center spar loca tion shown brace well scrap small plywood hole reinforcement trailing edge added after covering Wing construction follows essentially same procedure stabilizer few extra stepsI used detest plans half wing shown until began drawing plans publication became aware space limitations As builder have two options may build right wing shown grease plan cooking oil shortening make trans parent turn over build left wing build both panels once building right wing directly over plan left wing directly above right leading edges mated up mirror image effect system provides accurate rib spacing via notched training edge left panel mated leading edges Proceed construction stabilizer through straight rib stage omitting dihedral ribs Prior adding geodetic ribs warps called plan must initiated Cut wing panels apart dihedral joints block up outer end trailing edge tip panels 1/16 washout avoid tip stall prior complete stall wing Block up outer end right wing main panel leading edge /8 washin necessary compensate reduced lift produced inboard wing during right turning flight will help prevent right spiral dives under power strong thermal glide conditions left main panel built flat building board Install geodetic ribs except adjacent dihedral ribs completely dry remove wing panels board sand dihedral angles Secure main panJanuary 1977 35 Stabilizer tilts 45 degrees dethermalizing Remote fuse location works best rear fin force layouts Ship combines Class perform ance handling ease 1/2A ships I/IS RISS\ KEY3/IS X 1/4 LEADING EDGE N -- -------- --2~----------IdWX VS SPRUCE SF615 X 3/4 TRAILING EDGE 3/325 1/4 SFRUCE-J SPRUCE RESmAENT I/B NIB~\ YU SNEEr TIPS / lAS GREET BESETS 3/ISX 1/4 LEADING EDGE ~I6 S VS SPARE \7 /lB 5 3/4 TRAILING EDGE Al 1/32 PLY -I/S DOWEL IRDfOR VS UET GUSSETS A11/6 5 I/S I/S GREETSPRUCE 14TISAFISLE II I/M FIX MERO SAILON PILLETS J NOtE OFFSET 1/32 PLY---- Al Si XN / MUff S DETAIL I/S PLY FIREWALL LISt PLY DOIBILER ENDS HERE 4RFECT 96 RECTANIC MODIFY OUTLET II TO EXIT FWD TIRERjJ SOLDER 15flLEFT GIDE SEET RETAL 33211 3/32 SHEET DIHEDRAL DETAIL I/IS SHEET ll\\ /LMma8IOD\ TIP DETAIL IM IL B-I A 1 I/S DOWELJGRAIN LEFPYLON 3 LAMNAIlOIS SEE SECTION GRAINvu WWA GRAINRIGHTVBX MS CENTER FIREWALL I/B PLY\ MG SO 41 09 10 ENGINE TARE OUTLET0—LAISNNG SKE WING WARPS RGHT MAIN 1/S WAS14N LEFT MAIN FLAT TIPS IllS WASHOUT 3/32 X I/S Il\II/I PLY SPRUCE 1W ZZZZrrzn STABILIZER RIBS I/rn SHEET WINO RIBS I/IS SlEET I/U RUD 3/32 X S/S LONGERONS DIAGONALS ElrN v-- -DY LINE- SHEET/5 ALIBI --ISIDESFUEL TUBING DY STOP GET FOR 40 C/L CABLEWINS GUIOE 0I23456 FLY RIGHT RIGHT DIXIE GAL CLARENCE NAUGHT lAB PLAISGNG\ SPUT DOWEL KEY F6 R /7 N 3/32 SHEET TIPS 45 34 A L1132 PLYWOOD \-I/s SHEET 1/4 ALUIt SNIfFER TUBE Above A modified Perfect #6 Rectank inletted 1/32 ply fuselage doubler Husky skid protects model hard DT landings Right Wing keys pylon 1/8 dowel assuring positive alignment Fuse snuffer goes through fuselage allow instant fuse length adjust ments Tatone squeeze-off controls engine run Dixie-Gal els board Block up tip panels proper dihedral angle glue main panels thoroughly dry join main pan els center similar manner Allow dry add dihedral braces ribs center rib geodetic dihedral ribs center planking gussets Notch geodetic ribs install front spar surfaces now ready thor ough sanding Shape leading edges care fully maintain airfoil shown plan Employ sanding block long enough span three four ribs insure uniform ity Blend ribs trailing edge smoothly Work carefully taking care dam age structures corners sanding block Dust thoroughly Determine point what covering material plan use structure plenty adequate plastic films elect use proceed according manufacturers instructions recommend medium Silkspan wing main panels Japanese tissue wing tips stabilizer Prior cover ing paper predope perimeters structures two coats dope sanding after first coat Apply tissue covering water shrink apply two coats clear dope Cut trim colored Japanese tissue AMA numbers should applied thinner time Follow three coats clear dope wing two stabilizer Set flying surfaces aside cure prefer ably secured some sort jig holding fixture insure alignment Fuselage Before starting fuselage con struction study plan carefully order thoroughly familiar design Prefabrication certain parts subas semblies will aid overall progress Start construction pylon Cut center lamination 1/16 plywood Add outer laminations 3/32 sheet balsa bonded contact cement left balsa lamination ends engine mount Check plan proper grain direction will note pylon offset right allows engine thrust line centered mounts bonded directly plywood pylon core Secure 5/16 sq engine mount stock pylon assembly epoxy Space suit width engine being used Dont waste time try ing buy 5/16 sq engine mount stock hobby shop Have friend table saw rip oak maple Cut longeron diagonal stock medium 3/32 sheet Notch top bot tom rudder top pylon Glue up light 1/8 stock rudder sub-fin sembly dry cut shape add 1/16 /8 spruce hard edging Cut fuse lage sides medium 1/16 sheet Glue up some medium /8 stock wing rest Begin final fuselage assembly pinning right side plan sure building board flat curve will built right fuselage disastrous results Install longerons diagonal bracing Fill support pylon tank area shown plan right side detail Add py lon engine mount rudder-sub fin subassemblies Align /8 plywood firewall secure Add fill structural members pylon finally left fuselage side Let sembly dry thoroughly least overnight Remove fuselage board sand carefully Secure 1/32 plywood doublers front fuselage contact cement Check top pylon proper incidence angle install wing rest reinforcing triangle stock Wing runners hold-down dowels complete pylon Build up stabilizer rest install fuse lage Glide turn will controlled stab tilt recommend stab rest stalled built-in tilt align stabil izer right main wing panel will avoid lot unnecessary shimming later Purchase Perfect number six Rec tank Remove stock fuel outlet seal hole Install new fuel feed i/8in copper tubing picking up fuel bottom rear tank exiting front left corner near timer Cut openings fuselage plywood doublers tank timer Secure tank epoxy glue building fillet glue around tank Note tank projects out fuse lage approximately half tank depth Bend length /2-in aluminum tubing dethermalizer line guide install rear fuselage shown plan Add aluminum snuffer tube DT band hook forward fuselage location Sand fuselage well apply two coats dope cover plywood doublers aft Japanese tissue Cover balance lightweight fiberglass cloth silk ad hered dope continued page 82 January1977 37 1st RC Masters Class 1st RC Advanced 1st RC Novice 1st Formula Pylon 1st Quarter Midget Pylon 1st CL Stunt Open 1st CL Stunt Senior 1st CL Stunt Junior WORLD CHAMPIONSHIP 1976 HOLLAND 1st 2nd 3rd CL STUNT MORE 1976 NATIONALS 1st CL Combat Op & Sr 1st CL Slow Comb Op & Sr 1st CL Carrier II Op Jr Sr 1st CL Carrier Sr Jr 1st CL Class D Speed Open 1st CL Class C Speed Sr & Jr 1st CL Class B Speed Op& Sr 1st CL Cl ASpeed Op SrJr 1st CL Formula 40 Open 1st CL Class B Proto Jr 1st FF Class B Open 1st FF Class C Open HIGH PERFORMANCE * COMPETITION PROVEN * THIN RIGID BLADES OF HARD MAPLE WOOD * SUPERBLY FINISHED COMPLETELY FUEL PROOF SPECIAL PRO SERIES 2 FOQ RC-FREE FLIGHT CONTROL LINE DIAPITcHPRIcE 5%34e9 63459 733%4119 S3%456119 945677%129 10467139 106W ew139 10SEW149 114677% 7A7%5159 11SEW159 11%67169 126179 125W179 1356219 1456249 1556299 164%6379 W WIOE5LAOE EW EXTRA WIDE SERIES 400 B FOR SPEED NG AovANCED OESIGN NO 1 IN PYLON RAcING LEAOING SPEED RECORD HOLDER OF ALL TIMES RC PYLON RACING OIA PITCH PRICE 5/3%4119 7 55h6 129 7 SN 5%N SN 129 5% SA77A 169 9 5577% 169 CONTROL LINE EED& RACING DIA PITCH PRICE 4%657119 4%55%119 6755%129 77510% 11139 55149 59N 9%N149 5%77%149 91213199 N NARROW RC Helicopters continued storage problem usually store belt notches cut flange upper part cooling fan housing wont work Super-Baby because gets way collective bellcrank simple 1/16 music-wire clip made side fuselage plates see sketch has worked well no problems M/R pitch set plus 2 degrees full collective carburetor-needle valve richened tail-rotor speed lift-off 7000 rpms Super-Baby 48 M/R half-throttle stick half-carburetor barrel open per kit instructions Throt tle trim set half start full engage clutch shut off en gine full close Blade tracking checked brought dead simple turn ball joints pitch arm much needed welcome change everything checked out Super-Baby both ready fly First flight Super-Baby flew very first attempt took small trim change tail rotor fly hands off ran several tankfulls through ing take-offs landings hovering did things very well novice someone learning fly However translational flying left great deal desired will list some undesira ble things did case should read further will also tell Dixie-Gal/Haught continued page 37 Apply two coats dope add microballoon fillets around base pylon desired Continue finish trim until desired effect achieved Fabricate landing skid 3/32 music wire install fuselage Make up DT line control-line cable Rig stop using short piece fuel tubing tied DT line bear against aluminum tube line guide rear fuselage 40-degree stab pop up will bring Dixie-Gal down damage Check alignment pylon rudder straightedge taut thread held against edge pylon alignment rudder perfect correct neces sary Band wing align carefully measuring base rudder tips satisfied square install wing keys Mount engine 7-4 prop timer fuel line Assemble complete airplane check CG Model should balance ard wing trailing edge Ballast necessary Nose weight can added securing sheet lead under engine mount screws within fuselage beneath timer Make final check specified warps undesirable character istics have eliminated now really super Super-Baby Undesirable Characteristics I Collective undefined lift-off 2 Causes helicopter swim lift-offs 3 Blade speed constant 4 Helicopter porpoising hover flight 5 Very sluggish cyclic control 6 Hard turn stop 7 Obvious need tail-rotor mix 8 Excessive head tilt before fuselage follows 9 Reduction collective causes instant reduction blade speed Fortunately have quite lot experience Schluter collective head Gazelle problems quickly recognized solutions hard come Next months column will deal solutions one Helicopter Holdouts have holding off getting RC helicopters cause price Kavan has announced new prices Jet Ranger $32000 Alouette $16000 am sure prices will never lower now time RC helicopters no longer mys tery part help may need now readily available Just call will see Walt Schoonard 2080 Sharon Rd Winter Park FL 32789 Phone 305 4221531 days 305 647-1335 nights time may occur you view assembled model may have created monster Half-A-size model twice normal engine size may feel inclined wear hard hat have pre-dug fox hole near launch site Let assure will necessary Flight Testing may begin few hand glides over legendary tall grass However personally have never located phenomena Actually couple tosses determine model n ither diving stalling sufficient Hand gliding cant really tell much too variables exist Glide trim best worked out after power pattern established Dixie-Gal should tested full power using fuel prop plan use competition first flight launch 60-degree angle slightly right wind right wing down slightly three-second engine run model should move out smartly maintaining 60-degree climbing angle should turn approximately onequarter turn right Try remember exactly what happened test flight Transition may may good such short engine run speed will built up normal Glide point should safe Use 30-second DT fuse avoid extensive chasing 82 Model Aviation OUT- PERFORMS ALL OTHERS AT THE 1976 NATIONALS well continue increase engine run two second increments until nine seconds reached Transition should good five-second run no later seven seconds Three-quarters turn nine sec onds about right Climb angle will crease speed builds turn will im prove transition Glide should just above stalling speed calm days slightly faster rough air Make adjustments time according following four basic rules Climb Turnrudder tab Use 1/16 X alsa shaped like trailing edge stock glue side rudder trailing edge Pylon models must turn right under power Climb Anglestab incidence Raise trailing edge increase Raise leading edge decrease Shim matchbook cover plywood 1/32 time Glide Turnstab tilt Model will turn toward high tip Right tip high right turn Should about right main wing panel Glide Angleshift CG Add lead tail slow glide add lead nose increase speed above trim changes will act inde pendently another excep tion stabilizer tilt shim placed under end stab rest will have effect one-half shim thickness being placed under stab lead ing edge center will reduce climb angle Removal stab tilt shims will have reverse effect will increase climb angle Fly Dixie-Gal often thoroughly familiar flight characteristics Enter competition chance can Dixie-Gal has won several trophies can same TIMER CL Scale/Stott continued page 30 After filler has sanded smooth time add surface detailing such panel markings rivets hatches etc good base sanding sealer primers very little fin ish color paint will necessary cover model like add tint finish ing color sanding sealer primer obtain still better paint covering may think awful amount work involved building model will definitely pay off re ceive 1st place trophy Some time ago received letter Bob Jones Long Beach Calif sent some pictures Me-109K Bob formed model fiberglass wings control surfaces said really enjoys working fiber glass Working fiberglass requires 000 S 0 S 0 0 0 0 0 S S S 0 S 0 0 S 0 S S S S S S S S S S S 0 S S 0 0 S 0 0 0 Features include ABC Piston Liner Ball Bearings Perry Carburetor Flywheel gned cup electric starter Underwater Pick-up Integral Cavitation Plate Skeg Tough Transom Mounting Plate withstand stress flat-out racing different style building since wooden plug made first female mold first positive Bob didnt want engine parts visible spent quite bit time energy local machine shop devising right-angle gear drive engine engine McCoy 60 rigged run backwards through two gears prop will turn correct direction also has retracts shock absorbing retractable tail wheel hatches spring loaded hinged Bob estimates should weigh 7 8 lbs finished has working Me109K two years true test patience Mike F Stott 118 E Wheeler St N Mankato MN S6001 006 6 6 S S S 0 S S S S 0 S 0 S 0 S 0 S S 0 0 0 S S 0 S 0 0 0 0 0 S 0 S 0 0 0 0 S 0 THE 35cc 21 OUTBOARD Heres tough hot K & B 35cc 21 engine. member family first its kind . destined set pace other engines will follow water-cooled competition engine ultimate outboard engines Fast powerful easy install . simple 4 BOLT INSTALLATION off running January1977 83 Modeler Has Everything Will Appreciate Langleys Model Aero Engine 1903 Robert Meyer Curator National Air & Space Museum Smithsonian Institution Illustrated orical Collectors Item $500 Cumberland Press 4926 Del Ray Avenue Bethesda Maryland 20014
Edition: Model Aviation - 1977/01
Page Numbers: 34, 35, 36, 37, 82, 83
A proven trophy winner 09-powered Class Free Flight has near vertical climb flawless transition CLASS-A GAS hotly con tested event free-flight power competi tion today feel due number factors availability number good factory engines requiring tuning good manageable size model FAI power influence above spectacular per formance needs check entries A-gas Nats US Free Flight Champs Taft note con tests requiring fly-off settle final stand ings confirm popularity As free-flight models DixieGal came about effort build bet ter mousetrap always admired Geodetic Union Jack structures some time have eyed -A Galaxie Vic Cunningham Galaxie Clarence Haught Photos Tim Christie however apologies Vic always seemed overbuilt -A model re sisted temptation build design Later firming up new Class-A ship kept thinking rigid Galaxie surfaces new ship built around hot Cox TD09 happened have lying around 315 sq should just about right some time have flying Dixielander Class Dixielander George Fuller Eng lish equivalent Starduster English have flying small-field rules years have developed small highclimbing models capable handling large powerplants Dixielander using 350 sq in-wing powered Supertigre 15 anything boring So pattern set Galaxie-type surfaces Dixielander type fuselage mated together sized 09 engine christened Dixie-Gal resulting model presented has given great deal pleasure has added extensively trophy shelf elect build Dixie-Gal know will disappointed has near vertical climb gets up lift lurks transitions flawlessly spirited glide strive classic European look Right Typical English styling Union Jack Construction provides rigidity high-speed climb flutter problems Structure virtually warp-proof 34 Model Aviation Below High pylon long moment arm rear fin force layout handles high power output Cox TD 09 No down- side-thrust required configuration Author contemplates prop change Cox TD 09 handles 7/4 prop well Spectacular climb tailored new Category II rules Construction Wing Tail As free-flight models construction should begin flying surfaces may covered allowed cure out fuselage being fabricated havent built geodetic structures before start stabilizer work up wing like use white glue ap plied brush building structures such will find geodetic struc tures very rigid warp-free sure building flat surface built-in warps permanent Notch trailing edge ribs indicated pin plan along bot tom spar leading edge Fit straight ribs top center spar Next cut geo detic ribs spar location trim ex act length striving good tight fit spar main rib intersection dry notch geodetic ribs receive top front spar Line up notch location straightedge cut single-edge razor blade strip masking tape along side razor blade makes good depth reference Add tip plates gussets Fit 1/s dowel rubberband anchor center spar loca tion shown brace well scrap small plywood hole reinforcement trailing edge added after covering Wing construction follows essentially same procedure stabilizer few extra stepsI used detest plans half wing shown until began drawing plans publication became aware space limitations As builder have two options may build right wing shown grease plan cooking oil shortening make trans parent turn over build left wing build both panels once building right wing directly over plan left wing directly above right leading edges mated up mirror image effect system provides accurate rib spacing via notched training edge left panel mated leading edges Proceed construction stabilizer through straight rib stage omitting dihedral ribs Prior adding geodetic ribs warps called plan must initiated Cut wing panels apart dihedral joints block up outer end trailing edge tip panels 1/16 washout avoid tip stall prior complete stall wing Block up outer end right wing main panel leading edge /8 washin necessary compensate reduced lift produced inboard wing during right turning flight will help prevent right spiral dives under power strong thermal glide conditions left main panel built flat building board Install geodetic ribs except adjacent dihedral ribs completely dry remove wing panels board sand dihedral angles Secure main panJanuary 1977 35 Stabilizer tilts 45 degrees dethermalizing Remote fuse location works best rear fin force layouts Ship combines Class perform ance handling ease 1/2A ships I/IS RISS\ KEY3/IS X 1/4 LEADING EDGE N -- -------- --2~----------IdWX VS SPRUCE SF615 X 3/4 TRAILING EDGE 3/325 1/4 SFRUCE-J SPRUCE RESmAENT I/B NIB~\ YU SNEEr TIPS / lAS GREET BESETS 3/ISX 1/4 LEADING EDGE ~I6 S VS SPARE \7 /lB 5 3/4 TRAILING EDGE Al 1/32 PLY -I/S DOWEL IRDfOR VS UET GUSSETS A11/6 5 I/S I/S GREETSPRUCE 14TISAFISLE II I/M FIX MERO SAILON PILLETS J NOtE OFFSET 1/32 PLY---- Al Si XN / MUff S DETAIL I/S PLY FIREWALL LISt PLY DOIBILER ENDS HERE 4RFECT 96 RECTANIC MODIFY OUTLET II TO EXIT FWD TIRERjJ SOLDER 15flLEFT GIDE SEET RETAL 33211 3/32 SHEET DIHEDRAL DETAIL I/IS SHEET ll\\ /LMma8IOD\ TIP DETAIL IM IL B-I A 1 I/S DOWELJGRAIN LEFPYLON 3 LAMNAIlOIS SEE SECTION GRAINvu WWA GRAINRIGHTVBX MS CENTER FIREWALL I/B PLY\ MG SO 41 09 10 ENGINE TARE OUTLET0—LAISNNG SKE WING WARPS RGHT MAIN 1/S WAS14N LEFT MAIN FLAT TIPS IllS WASHOUT 3/32 X I/S Il\II/I PLY SPRUCE 1W ZZZZrrzn STABILIZER RIBS I/rn SHEET WINO RIBS I/IS SlEET I/U RUD 3/32 X S/S LONGERONS DIAGONALS ElrN v-- -DY LINE- SHEET/5 ALIBI --ISIDESFUEL TUBING DY STOP GET FOR 40 C/L CABLEWINS GUIOE 0I23456 FLY RIGHT RIGHT DIXIE GAL CLARENCE NAUGHT lAB PLAISGNG\ SPUT DOWEL KEY F6 R /7 N 3/32 SHEET TIPS 45 34 A L1132 PLYWOOD \-I/s SHEET 1/4 ALUIt SNIfFER TUBE Above A modified Perfect #6 Rectank inletted 1/32 ply fuselage doubler Husky skid protects model hard DT landings Right Wing keys pylon 1/8 dowel assuring positive alignment Fuse snuffer goes through fuselage allow instant fuse length adjust ments Tatone squeeze-off controls engine run Dixie-Gal els board Block up tip panels proper dihedral angle glue main panels thoroughly dry join main pan els center similar manner Allow dry add dihedral braces ribs center rib geodetic dihedral ribs center planking gussets Notch geodetic ribs install front spar surfaces now ready thor ough sanding Shape leading edges care fully maintain airfoil shown plan Employ sanding block long enough span three four ribs insure uniform ity Blend ribs trailing edge smoothly Work carefully taking care dam age structures corners sanding block Dust thoroughly Determine point what covering material plan use structure plenty adequate plastic films elect use proceed according manufacturers instructions recommend medium Silkspan wing main panels Japanese tissue wing tips stabilizer Prior cover ing paper predope perimeters structures two coats dope sanding after first coat Apply tissue covering water shrink apply two coats clear dope Cut trim colored Japanese tissue AMA numbers should applied thinner time Follow three coats clear dope wing two stabilizer Set flying surfaces aside cure prefer ably secured some sort jig holding fixture insure alignment Fuselage Before starting fuselage con struction study plan carefully order thoroughly familiar design Prefabrication certain parts subas semblies will aid overall progress Start construction pylon Cut center lamination 1/16 plywood Add outer laminations 3/32 sheet balsa bonded contact cement left balsa lamination ends engine mount Check plan proper grain direction will note pylon offset right allows engine thrust line centered mounts bonded directly plywood pylon core Secure 5/16 sq engine mount stock pylon assembly epoxy Space suit width engine being used Dont waste time try ing buy 5/16 sq engine mount stock hobby shop Have friend table saw rip oak maple Cut longeron diagonal stock medium 3/32 sheet Notch top bot tom rudder top pylon Glue up light 1/8 stock rudder sub-fin sembly dry cut shape add 1/16 /8 spruce hard edging Cut fuse lage sides medium 1/16 sheet Glue up some medium /8 stock wing rest Begin final fuselage assembly pinning right side plan sure building board flat curve will built right fuselage disastrous results Install longerons diagonal bracing Fill support pylon tank area shown plan right side detail Add py lon engine mount rudder-sub fin subassemblies Align /8 plywood firewall secure Add fill structural members pylon finally left fuselage side Let sembly dry thoroughly least overnight Remove fuselage board sand carefully Secure 1/32 plywood doublers front fuselage contact cement Check top pylon proper incidence angle install wing rest reinforcing triangle stock Wing runners hold-down dowels complete pylon Build up stabilizer rest install fuse lage Glide turn will controlled stab tilt recommend stab rest stalled built-in tilt align stabil izer right main wing panel will avoid lot unnecessary shimming later Purchase Perfect number six Rec tank Remove stock fuel outlet seal hole Install new fuel feed i/8in copper tubing picking up fuel bottom rear tank exiting front left corner near timer Cut openings fuselage plywood doublers tank timer Secure tank epoxy glue building fillet glue around tank Note tank projects out fuse lage approximately half tank depth Bend length /2-in aluminum tubing dethermalizer line guide install rear fuselage shown plan Add aluminum snuffer tube DT band hook forward fuselage location Sand fuselage well apply two coats dope cover plywood doublers aft Japanese tissue Cover balance lightweight fiberglass cloth silk ad hered dope continued page 82 January1977 37 1st RC Masters Class 1st RC Advanced 1st RC Novice 1st Formula Pylon 1st Quarter Midget Pylon 1st CL Stunt Open 1st CL Stunt Senior 1st CL Stunt Junior WORLD CHAMPIONSHIP 1976 HOLLAND 1st 2nd 3rd CL STUNT MORE 1976 NATIONALS 1st CL Combat Op & Sr 1st CL Slow Comb Op & Sr 1st CL Carrier II Op Jr Sr 1st CL Carrier Sr Jr 1st CL Class D Speed Open 1st CL Class C Speed Sr & Jr 1st CL Class B Speed Op& Sr 1st CL Cl ASpeed Op SrJr 1st CL Formula 40 Open 1st CL Class B Proto Jr 1st FF Class B Open 1st FF Class C Open HIGH PERFORMANCE * COMPETITION PROVEN * THIN RIGID BLADES OF HARD MAPLE WOOD * SUPERBLY FINISHED COMPLETELY FUEL PROOF SPECIAL PRO SERIES 2 FOQ RC-FREE FLIGHT CONTROL LINE DIAPITcHPRIcE 5%34e9 63459 733%4119 S3%456119 945677%129 10467139 106W ew139 10SEW149 114677% 7A7%5159 11SEW159 11%67169 126179 125W179 1356219 1456249 1556299 164%6379 W WIOE5LAOE EW EXTRA WIDE SERIES 400 B FOR SPEED NG AovANCED OESIGN NO 1 IN PYLON RAcING LEAOING SPEED RECORD HOLDER OF ALL TIMES RC PYLON RACING OIA PITCH PRICE 5/3%4119 7 55h6 129 7 SN 5%N SN 129 5% SA77A 169 9 5577% 169 CONTROL LINE EED& RACING DIA PITCH PRICE 4%657119 4%55%119 6755%129 77510% 11139 55149 59N 9%N149 5%77%149 91213199 N NARROW RC Helicopters continued storage problem usually store belt notches cut flange upper part cooling fan housing wont work Super-Baby because gets way collective bellcrank simple 1/16 music-wire clip made side fuselage plates see sketch has worked well no problems M/R pitch set plus 2 degrees full collective carburetor-needle valve richened tail-rotor speed lift-off 7000 rpms Super-Baby 48 M/R half-throttle stick half-carburetor barrel open per kit instructions Throt tle trim set half start full engage clutch shut off en gine full close Blade tracking checked brought dead simple turn ball joints pitch arm much needed welcome change everything checked out Super-Baby both ready fly First flight Super-Baby flew very first attempt took small trim change tail rotor fly hands off ran several tankfulls through ing take-offs landings hovering did things very well novice someone learning fly However translational flying left great deal desired will list some undesira ble things did case should read further will also tell Dixie-Gal/Haught continued page 37 Apply two coats dope add microballoon fillets around base pylon desired Continue finish trim until desired effect achieved Fabricate landing skid 3/32 music wire install fuselage Make up DT line control-line cable Rig stop using short piece fuel tubing tied DT line bear against aluminum tube line guide rear fuselage 40-degree stab pop up will bring Dixie-Gal down damage Check alignment pylon rudder straightedge taut thread held against edge pylon alignment rudder perfect correct neces sary Band wing align carefully measuring base rudder tips satisfied square install wing keys Mount engine 7-4 prop timer fuel line Assemble complete airplane check CG Model should balance ard wing trailing edge Ballast necessary Nose weight can added securing sheet lead under engine mount screws within fuselage beneath timer Make final check specified warps undesirable character istics have eliminated now really super Super-Baby Undesirable Characteristics I Collective undefined lift-off 2 Causes helicopter swim lift-offs 3 Blade speed constant 4 Helicopter porpoising hover flight 5 Very sluggish cyclic control 6 Hard turn stop 7 Obvious need tail-rotor mix 8 Excessive head tilt before fuselage follows 9 Reduction collective causes instant reduction blade speed Fortunately have quite lot experience Schluter collective head Gazelle problems quickly recognized solutions hard come Next months column will deal solutions one Helicopter Holdouts have holding off getting RC helicopters cause price Kavan has announced new prices Jet Ranger $32000 Alouette $16000 am sure prices will never lower now time RC helicopters no longer mys tery part help may need now readily available Just call will see Walt Schoonard 2080 Sharon Rd Winter Park FL 32789 Phone 305 4221531 days 305 647-1335 nights time may occur you view assembled model may have created monster Half-A-size model twice normal engine size may feel inclined wear hard hat have pre-dug fox hole near launch site Let assure will necessary Flight Testing may begin few hand glides over legendary tall grass However personally have never located phenomena Actually couple tosses determine model n ither diving stalling sufficient Hand gliding cant really tell much too variables exist Glide trim best worked out after power pattern established Dixie-Gal should tested full power using fuel prop plan use competition first flight launch 60-degree angle slightly right wind right wing down slightly three-second engine run model should move out smartly maintaining 60-degree climbing angle should turn approximately onequarter turn right Try remember exactly what happened test flight Transition may may good such short engine run speed will built up normal Glide point should safe Use 30-second DT fuse avoid extensive chasing 82 Model Aviation OUT- PERFORMS ALL OTHERS AT THE 1976 NATIONALS well continue increase engine run two second increments until nine seconds reached Transition should good five-second run no later seven seconds Three-quarters turn nine sec onds about right Climb angle will crease speed builds turn will im prove transition Glide should just above stalling speed calm days slightly faster rough air Make adjustments time according following four basic rules Climb Turnrudder tab Use 1/16 X alsa shaped like trailing edge stock glue side rudder trailing edge Pylon models must turn right under power Climb Anglestab incidence Raise trailing edge increase Raise leading edge decrease Shim matchbook cover plywood 1/32 time Glide Turnstab tilt Model will turn toward high tip Right tip high right turn Should about right main wing panel Glide Angleshift CG Add lead tail slow glide add lead nose increase speed above trim changes will act inde pendently another excep tion stabilizer tilt shim placed under end stab rest will have effect one-half shim thickness being placed under stab lead ing edge center will reduce climb angle Removal stab tilt shims will have reverse effect will increase climb angle Fly Dixie-Gal often thoroughly familiar flight characteristics Enter competition chance can Dixie-Gal has won several trophies can same TIMER CL Scale/Stott continued page 30 After filler has sanded smooth time add surface detailing such panel markings rivets hatches etc good base sanding sealer primers very little fin ish color paint will necessary cover model like add tint finish ing color sanding sealer primer obtain still better paint covering may think awful amount work involved building model will definitely pay off re ceive 1st place trophy Some time ago received letter Bob Jones Long Beach Calif sent some pictures Me-109K Bob formed model fiberglass wings control surfaces said really enjoys working fiber glass Working fiberglass requires 000 S 0 S 0 0 0 0 0 S S S 0 S 0 0 S 0 S S S S S S S S S S S 0 S S 0 0 S 0 0 0 Features include ABC Piston Liner Ball Bearings Perry Carburetor Flywheel gned cup electric starter Underwater Pick-up Integral Cavitation Plate Skeg Tough Transom Mounting Plate withstand stress flat-out racing different style building since wooden plug made first female mold first positive Bob didnt want engine parts visible spent quite bit time energy local machine shop devising right-angle gear drive engine engine McCoy 60 rigged run backwards through two gears prop will turn correct direction also has retracts shock absorbing retractable tail wheel hatches spring loaded hinged Bob estimates should weigh 7 8 lbs finished has working Me109K two years true test patience Mike F Stott 118 E Wheeler St N Mankato MN S6001 006 6 6 S S S 0 S S S S 0 S 0 S 0 S 0 S S 0 0 0 S S 0 S 0 0 0 0 0 S 0 S 0 0 0 0 S 0 THE 35cc 21 OUTBOARD Heres tough hot K & B 35cc 21 engine. member family first its kind . destined set pace other engines will follow water-cooled competition engine ultimate outboard engines Fast powerful easy install . simple 4 BOLT INSTALLATION off running January1977 83 Modeler Has Everything Will Appreciate Langleys Model Aero Engine 1903 Robert Meyer Curator National Air & Space Museum Smithsonian Institution Illustrated orical Collectors Item $500 Cumberland Press 4926 Del Ray Avenue Bethesda Maryland 20014
Edition: Model Aviation - 1977/01
Page Numbers: 34, 35, 36, 37, 82, 83
A proven trophy winner 09-powered Class Free Flight has near vertical climb flawless transition CLASS-A GAS hotly con tested event free-flight power competi tion today feel due number factors availability number good factory engines requiring tuning good manageable size model FAI power influence above spectacular per formance needs check entries A-gas Nats US Free Flight Champs Taft note con tests requiring fly-off settle final stand ings confirm popularity As free-flight models DixieGal came about effort build bet ter mousetrap always admired Geodetic Union Jack structures some time have eyed -A Galaxie Vic Cunningham Galaxie Clarence Haught Photos Tim Christie however apologies Vic always seemed overbuilt -A model re sisted temptation build design Later firming up new Class-A ship kept thinking rigid Galaxie surfaces new ship built around hot Cox TD09 happened have lying around 315 sq should just about right some time have flying Dixielander Class Dixielander George Fuller Eng lish equivalent Starduster English have flying small-field rules years have developed small highclimbing models capable handling large powerplants Dixielander using 350 sq in-wing powered Supertigre 15 anything boring So pattern set Galaxie-type surfaces Dixielander type fuselage mated together sized 09 engine christened Dixie-Gal resulting model presented has given great deal pleasure has added extensively trophy shelf elect build Dixie-Gal know will disappointed has near vertical climb gets up lift lurks transitions flawlessly spirited glide strive classic European look Right Typical English styling Union Jack Construction provides rigidity high-speed climb flutter problems Structure virtually warp-proof 34 Model Aviation Below High pylon long moment arm rear fin force layout handles high power output Cox TD 09 No down- side-thrust required configuration Author contemplates prop change Cox TD 09 handles 7/4 prop well Spectacular climb tailored new Category II rules Construction Wing Tail As free-flight models construction should begin flying surfaces may covered allowed cure out fuselage being fabricated havent built geodetic structures before start stabilizer work up wing like use white glue ap plied brush building structures such will find geodetic struc tures very rigid warp-free sure building flat surface built-in warps permanent Notch trailing edge ribs indicated pin plan along bot tom spar leading edge Fit straight ribs top center spar Next cut geo detic ribs spar location trim ex act length striving good tight fit spar main rib intersection dry notch geodetic ribs receive top front spar Line up notch location straightedge cut single-edge razor blade strip masking tape along side razor blade makes good depth reference Add tip plates gussets Fit 1/s dowel rubberband anchor center spar loca tion shown brace well scrap small plywood hole reinforcement trailing edge added after covering Wing construction follows essentially same procedure stabilizer few extra stepsI used detest plans half wing shown until began drawing plans publication became aware space limitations As builder have two options may build right wing shown grease plan cooking oil shortening make trans parent turn over build left wing build both panels once building right wing directly over plan left wing directly above right leading edges mated up mirror image effect system provides accurate rib spacing via notched training edge left panel mated leading edges Proceed construction stabilizer through straight rib stage omitting dihedral ribs Prior adding geodetic ribs warps called plan must initiated Cut wing panels apart dihedral joints block up outer end trailing edge tip panels 1/16 washout avoid tip stall prior complete stall wing Block up outer end right wing main panel leading edge /8 washin necessary compensate reduced lift produced inboard wing during right turning flight will help prevent right spiral dives under power strong thermal glide conditions left main panel built flat building board Install geodetic ribs except adjacent dihedral ribs completely dry remove wing panels board sand dihedral angles Secure main panJanuary 1977 35 Stabilizer tilts 45 degrees dethermalizing Remote fuse location works best rear fin force layouts Ship combines Class perform ance handling ease 1/2A ships I/IS RISS\ KEY3/IS X 1/4 LEADING EDGE N -- -------- --2~----------IdWX VS SPRUCE SF615 X 3/4 TRAILING EDGE 3/325 1/4 SFRUCE-J SPRUCE RESmAENT I/B NIB~\ YU SNEEr TIPS / lAS GREET BESETS 3/ISX 1/4 LEADING EDGE ~I6 S VS SPARE \7 /lB 5 3/4 TRAILING EDGE Al 1/32 PLY -I/S DOWEL IRDfOR VS UET GUSSETS A11/6 5 I/S I/S GREETSPRUCE 14TISAFISLE II I/M FIX MERO SAILON PILLETS J NOtE OFFSET 1/32 PLY---- Al Si XN / MUff S DETAIL I/S PLY FIREWALL LISt PLY DOIBILER ENDS HERE 4RFECT 96 RECTANIC MODIFY OUTLET II TO EXIT FWD TIRERjJ SOLDER 15flLEFT GIDE SEET RETAL 33211 3/32 SHEET DIHEDRAL DETAIL I/IS SHEET ll\\ /LMma8IOD\ TIP DETAIL IM IL B-I A 1 I/S DOWELJGRAIN LEFPYLON 3 LAMNAIlOIS SEE SECTION GRAINvu WWA GRAINRIGHTVBX MS CENTER FIREWALL I/B PLY\ MG SO 41 09 10 ENGINE TARE OUTLET0—LAISNNG SKE WING WARPS RGHT MAIN 1/S WAS14N LEFT MAIN FLAT TIPS IllS WASHOUT 3/32 X I/S Il\II/I PLY SPRUCE 1W ZZZZrrzn STABILIZER RIBS I/rn SHEET WINO RIBS I/IS SlEET I/U RUD 3/32 X S/S LONGERONS DIAGONALS ElrN v-- -DY LINE- SHEET/5 ALIBI --ISIDESFUEL TUBING DY STOP GET FOR 40 C/L CABLEWINS GUIOE 0I23456 FLY RIGHT RIGHT DIXIE GAL CLARENCE NAUGHT lAB PLAISGNG\ SPUT DOWEL KEY F6 R /7 N 3/32 SHEET TIPS 45 34 A L1132 PLYWOOD \-I/s SHEET 1/4 ALUIt SNIfFER TUBE Above A modified Perfect #6 Rectank inletted 1/32 ply fuselage doubler Husky skid protects model hard DT landings Right Wing keys pylon 1/8 dowel assuring positive alignment Fuse snuffer goes through fuselage allow instant fuse length adjust ments Tatone squeeze-off controls engine run Dixie-Gal els board Block up tip panels proper dihedral angle glue main panels thoroughly dry join main pan els center similar manner Allow dry add dihedral braces ribs center rib geodetic dihedral ribs center planking gussets Notch geodetic ribs install front spar surfaces now ready thor ough sanding Shape leading edges care fully maintain airfoil shown plan Employ sanding block long enough span three four ribs insure uniform ity Blend ribs trailing edge smoothly Work carefully taking care dam age structures corners sanding block Dust thoroughly Determine point what covering material plan use structure plenty adequate plastic films elect use proceed according manufacturers instructions recommend medium Silkspan wing main panels Japanese tissue wing tips stabilizer Prior cover ing paper predope perimeters structures two coats dope sanding after first coat Apply tissue covering water shrink apply two coats clear dope Cut trim colored Japanese tissue AMA numbers should applied thinner time Follow three coats clear dope wing two stabilizer Set flying surfaces aside cure prefer ably secured some sort jig holding fixture insure alignment Fuselage Before starting fuselage con struction study plan carefully order thoroughly familiar design Prefabrication certain parts subas semblies will aid overall progress Start construction pylon Cut center lamination 1/16 plywood Add outer laminations 3/32 sheet balsa bonded contact cement left balsa lamination ends engine mount Check plan proper grain direction will note pylon offset right allows engine thrust line centered mounts bonded directly plywood pylon core Secure 5/16 sq engine mount stock pylon assembly epoxy Space suit width engine being used Dont waste time try ing buy 5/16 sq engine mount stock hobby shop Have friend table saw rip oak maple Cut longeron diagonal stock medium 3/32 sheet Notch top bot tom rudder top pylon Glue up light 1/8 stock rudder sub-fin sembly dry cut shape add 1/16 /8 spruce hard edging Cut fuse lage sides medium 1/16 sheet Glue up some medium /8 stock wing rest Begin final fuselage assembly pinning right side plan sure building board flat curve will built right fuselage disastrous results Install longerons diagonal bracing Fill support pylon tank area shown plan right side detail Add py lon engine mount rudder-sub fin subassemblies Align /8 plywood firewall secure Add fill structural members pylon finally left fuselage side Let sembly dry thoroughly least overnight Remove fuselage board sand carefully Secure 1/32 plywood doublers front fuselage contact cement Check top pylon proper incidence angle install wing rest reinforcing triangle stock Wing runners hold-down dowels complete pylon Build up stabilizer rest install fuse lage Glide turn will controlled stab tilt recommend stab rest stalled built-in tilt align stabil izer right main wing panel will avoid lot unnecessary shimming later Purchase Perfect number six Rec tank Remove stock fuel outlet seal hole Install new fuel feed i/8in copper tubing picking up fuel bottom rear tank exiting front left corner near timer Cut openings fuselage plywood doublers tank timer Secure tank epoxy glue building fillet glue around tank Note tank projects out fuse lage approximately half tank depth Bend length /2-in aluminum tubing dethermalizer line guide install rear fuselage shown plan Add aluminum snuffer tube DT band hook forward fuselage location Sand fuselage well apply two coats dope cover plywood doublers aft Japanese tissue Cover balance lightweight fiberglass cloth silk ad hered dope continued page 82 January1977 37 1st RC Masters Class 1st RC Advanced 1st RC Novice 1st Formula Pylon 1st Quarter Midget Pylon 1st CL Stunt Open 1st CL Stunt Senior 1st CL Stunt Junior WORLD CHAMPIONSHIP 1976 HOLLAND 1st 2nd 3rd CL STUNT MORE 1976 NATIONALS 1st CL Combat Op & Sr 1st CL Slow Comb Op & Sr 1st CL Carrier II Op Jr Sr 1st CL Carrier Sr Jr 1st CL Class D Speed Open 1st CL Class C Speed Sr & Jr 1st CL Class B Speed Op& Sr 1st CL Cl ASpeed Op SrJr 1st CL Formula 40 Open 1st CL Class B Proto Jr 1st FF Class B Open 1st FF Class C Open HIGH PERFORMANCE * COMPETITION PROVEN * THIN RIGID BLADES OF HARD MAPLE WOOD * SUPERBLY FINISHED COMPLETELY FUEL PROOF SPECIAL PRO SERIES 2 FOQ RC-FREE FLIGHT CONTROL LINE DIAPITcHPRIcE 5%34e9 63459 733%4119 S3%456119 945677%129 10467139 106W ew139 10SEW149 114677% 7A7%5159 11SEW159 11%67169 126179 125W179 1356219 1456249 1556299 164%6379 W WIOE5LAOE EW EXTRA WIDE SERIES 400 B FOR SPEED NG AovANCED OESIGN NO 1 IN PYLON RAcING LEAOING SPEED RECORD HOLDER OF ALL TIMES RC PYLON RACING OIA PITCH PRICE 5/3%4119 7 55h6 129 7 SN 5%N SN 129 5% SA77A 169 9 5577% 169 CONTROL LINE EED& RACING DIA PITCH PRICE 4%657119 4%55%119 6755%129 77510% 11139 55149 59N 9%N149 5%77%149 91213199 N NARROW RC Helicopters continued storage problem usually store belt notches cut flange upper part cooling fan housing wont work Super-Baby because gets way collective bellcrank simple 1/16 music-wire clip made side fuselage plates see sketch has worked well no problems M/R pitch set plus 2 degrees full collective carburetor-needle valve richened tail-rotor speed lift-off 7000 rpms Super-Baby 48 M/R half-throttle stick half-carburetor barrel open per kit instructions Throt tle trim set half start full engage clutch shut off en gine full close Blade tracking checked brought dead simple turn ball joints pitch arm much needed welcome change everything checked out Super-Baby both ready fly First flight Super-Baby flew very first attempt took small trim change tail rotor fly hands off ran several tankfulls through ing take-offs landings hovering did things very well novice someone learning fly However translational flying left great deal desired will list some undesira ble things did case should read further will also tell Dixie-Gal/Haught continued page 37 Apply two coats dope add microballoon fillets around base pylon desired Continue finish trim until desired effect achieved Fabricate landing skid 3/32 music wire install fuselage Make up DT line control-line cable Rig stop using short piece fuel tubing tied DT line bear against aluminum tube line guide rear fuselage 40-degree stab pop up will bring Dixie-Gal down damage Check alignment pylon rudder straightedge taut thread held against edge pylon alignment rudder perfect correct neces sary Band wing align carefully measuring base rudder tips satisfied square install wing keys Mount engine 7-4 prop timer fuel line Assemble complete airplane check CG Model should balance ard wing trailing edge Ballast necessary Nose weight can added securing sheet lead under engine mount screws within fuselage beneath timer Make final check specified warps undesirable character istics have eliminated now really super Super-Baby Undesirable Characteristics I Collective undefined lift-off 2 Causes helicopter swim lift-offs 3 Blade speed constant 4 Helicopter porpoising hover flight 5 Very sluggish cyclic control 6 Hard turn stop 7 Obvious need tail-rotor mix 8 Excessive head tilt before fuselage follows 9 Reduction collective causes instant reduction blade speed Fortunately have quite lot experience Schluter collective head Gazelle problems quickly recognized solutions hard come Next months column will deal solutions one Helicopter Holdouts have holding off getting RC helicopters cause price Kavan has announced new prices Jet Ranger $32000 Alouette $16000 am sure prices will never lower now time RC helicopters no longer mys tery part help may need now readily available Just call will see Walt Schoonard 2080 Sharon Rd Winter Park FL 32789 Phone 305 4221531 days 305 647-1335 nights time may occur you view assembled model may have created monster Half-A-size model twice normal engine size may feel inclined wear hard hat have pre-dug fox hole near launch site Let assure will necessary Flight Testing may begin few hand glides over legendary tall grass However personally have never located phenomena Actually couple tosses determine model n ither diving stalling sufficient Hand gliding cant really tell much too variables exist Glide trim best worked out after power pattern established Dixie-Gal should tested full power using fuel prop plan use competition first flight launch 60-degree angle slightly right wind right wing down slightly three-second engine run model should move out smartly maintaining 60-degree climbing angle should turn approximately onequarter turn right Try remember exactly what happened test flight Transition may may good such short engine run speed will built up normal Glide point should safe Use 30-second DT fuse avoid extensive chasing 82 Model Aviation OUT- PERFORMS ALL OTHERS AT THE 1976 NATIONALS well continue increase engine run two second increments until nine seconds reached Transition should good five-second run no later seven seconds Three-quarters turn nine sec onds about right Climb angle will crease speed builds turn will im prove transition Glide should just above stalling speed calm days slightly faster rough air Make adjustments time according following four basic rules Climb Turnrudder tab Use 1/16 X alsa shaped like trailing edge stock glue side rudder trailing edge Pylon models must turn right under power Climb Anglestab incidence Raise trailing edge increase Raise leading edge decrease Shim matchbook cover plywood 1/32 time Glide Turnstab tilt Model will turn toward high tip Right tip high right turn Should about right main wing panel Glide Angleshift CG Add lead tail slow glide add lead nose increase speed above trim changes will act inde pendently another excep tion stabilizer tilt shim placed under end stab rest will have effect one-half shim thickness being placed under stab lead ing edge center will reduce climb angle Removal stab tilt shims will have reverse effect will increase climb angle Fly Dixie-Gal often thoroughly familiar flight characteristics Enter competition chance can Dixie-Gal has won several trophies can same TIMER CL Scale/Stott continued page 30 After filler has sanded smooth time add surface detailing such panel markings rivets hatches etc good base sanding sealer primers very little fin ish color paint will necessary cover model like add tint finish ing color sanding sealer primer obtain still better paint covering may think awful amount work involved building model will definitely pay off re ceive 1st place trophy Some time ago received letter Bob Jones Long Beach Calif sent some pictures Me-109K Bob formed model fiberglass wings control surfaces said really enjoys working fiber glass Working fiberglass requires 000 S 0 S 0 0 0 0 0 S S S 0 S 0 0 S 0 S S S S S S S S S S S 0 S S 0 0 S 0 0 0 Features include ABC Piston Liner Ball Bearings Perry Carburetor Flywheel gned cup electric starter Underwater Pick-up Integral Cavitation Plate Skeg Tough Transom Mounting Plate withstand stress flat-out racing different style building since wooden plug made first female mold first positive Bob didnt want engine parts visible spent quite bit time energy local machine shop devising right-angle gear drive engine engine McCoy 60 rigged run backwards through two gears prop will turn correct direction also has retracts shock absorbing retractable tail wheel hatches spring loaded hinged Bob estimates should weigh 7 8 lbs finished has working Me109K two years true test patience Mike F Stott 118 E Wheeler St N Mankato MN S6001 006 6 6 S S S 0 S S S S 0 S 0 S 0 S 0 S S 0 0 0 S S 0 S 0 0 0 0 0 S 0 S 0 0 0 0 S 0 THE 35cc 21 OUTBOARD Heres tough hot K & B 35cc 21 engine. member family first its kind . destined set pace other engines will follow water-cooled competition engine ultimate outboard engines Fast powerful easy install . simple 4 BOLT INSTALLATION off running January1977 83 Modeler Has Everything Will Appreciate Langleys Model Aero Engine 1903 Robert Meyer Curator National Air & Space Museum Smithsonian Institution Illustrated orical Collectors Item $500 Cumberland Press 4926 Del Ray Avenue Bethesda Maryland 20014