NO OCR TEXT NO OCR TEXT tion flat bench elevate out board ends two tip sections 6 match angled ribs Using sharp razor slice 1/16 joined ribs side main spars fit plywood dihedral braces Install braces check fit glue joints everything dry install bottom front spar leading edge tips glued two tip ribs Notice slant upwards become flush top top spar stubs Use scrap spar material fill between bottom main spars tips Sheet center section between spars sand completed wing stab rudder built right over plan just wing two 2 plywood spar doublers should elimi nated add much strength area plan shows 3/16-sq hardwood elevator carry-through /16 dowel will work well complete join mating surfaces sand outlines match Fuselage fuselage sides cut medium 8-lb /32 balsa sheet Dont cut wing saddle sides until after doublers glued place doublers also 3/n balsathis time hard-stock laid 450 angle grain sides doublers cemented place pin two sides together sand same outline sanding block 100-grit sandpaper still pinned together cut wing saddle drill -in holes wing-mounting dowels Separate sides add 3A2-sq longerons uprights well servoand tank-mounting rails Cut out drill firewall two cabin formers epoxy T nuts back side Left using stiller-type tall wheel steering load rudder hinges greatly reduced ground handling smoother responsive Right torsion bar landing gear easy install absorbs slot pain incurred hard landings Use type landing gear necessary simpilfy wing changes switching three-channel trainer four-channel aerobatics trainer 30 Model Aviation Muffler pressure easyto come helps maintain constantfuel flowto engine throttle control linkage has U-shaped bend just below exhaust stack acts adjustment provides strain relief servo should something bind Left Sherl Smothers cranks up Double Duty Leslie Lunch holds Model lean excellentthree-channeitrainer asthesewomen will attest Above generous tip-dihedraled wing gives Double Duty flying sense Its own abliltyto recoverfrom worst attItudes given time can save new flier 7--z 7-N PL N1 77 7N K 7 7I 1015K Z CrCL NGI N N1 -777--7 - BALSF 3HTU L TUB 0 DIR TPILV4HiL -7--- SQ L0NGR0N5 m AL5R DOUBI~R $HET TOP& BOTTOM BRLSA R~S BALSA SPAR 16 8 roP&BOTTOII N K-K Kr 96 4 7-7- -777 7 7 7p x3 *DIR flJ5IC WIR 3 / Left Trim 1/16 both top bottom two center ribs allow center-section sheeting Adding webbing during Initial assembly helps keep ribs vertical Right tip bows slant up blend airfoil Trim top spars butt against flat side bows bottom spars cut flush tip rib scrap 3/16 balsa used fill between tip Left The bottom fuselage flat both fuselage sides joined bottom bottom isqulte easyto assemblethe uprights keep both sides same Use medium 3/32 balsa forthe longerons uprights Right simple boxfuselage uses onlythe firewall two formers join sides throttle line Ny-Rod guides should installed atthls point construction Drill firewall before joining Left A 18-In plywood tail wheel pad cut out mounted after fuselage top bottom have sheeted pad allows free movement thetillerwithout modifying thetali wheel mount Right Gussets odd angles can cut holding stock overthe desired location marking outline gusset razor knife grain gusset should always run 45 angie joint itself firewall mounting bolts start assembling fuselage gluing two cabin formers place sides Make sure perpendicular side checking right triangle dry glue other fuselage side formers being sure perfect alignment first Bring tail together glue dry mount firewall prefer use epoxy hold firewall place Sheet bottom fuselage back wing saddle tail 6 balsa grain running across fuselage very tail balsa replaced V16 plywood tail wheel mount Build up glue landing gear mount place just front first cabin former Install Nyrod guides cabin area tail Drill Nyrod supports trim fit between fuselage sides Slip over Nyrods epoxy place Epoxy -in copper-tube fuel overflow lines well throttle line through firewall install floor tank compartment Wedge tank place foam connect copper tubes fuel tubing Watch eliminate kinks lines Finish cross-grain sheeting sand completed fuselage original covered Mono Kote material suggested 32 Model Aviation Full-Size Plans Available. See Page 188 316% SIr BALSASILtEDL3M PlY DOUBLER STA ILIZEN TYPICALS/15 510 TINGEBALSA FRMBE 016 BALSA WING WEB BOTTERN _BAF 110 BALjB0J 3/BWONLF ELEVATOR 3/IN DOEDT/10 DODD DORN BALSABOTTOM I/IS PLY V0 PLY DIHEDRAL BRACES BASIC TRAINER D/B NUOT RUD RODSV 1 WIREa TELSTAB TARESCREATION ROtORPASOEDIT WASIORC1NREISE TOILMOBAL110 PLYWOOD LA MOSINT DETAIL I/O PLYWOOD DIHEDRAL BRACESWING TIP DETAIL ADVANCED TRAINERDOT TO STOLE LS REDO DOLO 5/30 BALSO SIDESOROD 110 MA DOLES LANGEAR PATTERN TRIM PIN POD COSTED W RB RIB BOTTERN I/B BALSA NREET /7 I/IFSFL BALSAS/TO 60FUSELAGETOP VIEWL~\IYS BW ARSOEDOSSI/N PLY TRAYLANDING II\TO FIT FIN SAN DO 3/16 NALNAS/SO BALOM SLEETOOJSLER TO PIDEWOLLCARDED NYROD SATFUSELAGE ODORTODOSTLE LPSE NABEDEAR-SOFT ORE PUWIRODID TO IS EBSINE 3/TA SA WALSA.---PIT TO SAIDB-I PREP RECEIVER/ LARSUDROSSTONEA RALSA/3/TO RALSA STEED ISSIOEDOISY 00 S/IN BALSATAE BALSA ASSETS/TTERTSM 7 MCEST VIEWSASO510CSTATO%SRGREET DF S DO WAIBfI ~BLE DUTY OUTLINE FARTBASIC WIRE _TRAYRAILS/ RIBSDESISIED BY F RANDOLPH O 10 DIATRACING BY OE DEMARCO ________________________WREELS .aa Wt 0IA 3 43 0 3/TA NA BALSA FUSELAGE SIDE SPECIFICATIONS *160 SF60NT-lAO MODEL AVIATION /7 7 BALSA AG OS E T S r S -TANSA BALSAL POSNAPASFADS TOP 0100 PATTON RIGHT PANEL 3/B BALSA MAPS STUBS DDE AND BOTTOM 116 BALSA DENS . AERTISAL ORAlS PLY DIOEADAL MACES \ / lAIr BALGO1 SPEED TEI 3/SO Cod BDJSICAL I/B B00551 DALSO OUSOEDS TYPICAL DINGE LOCATION LEFT V ANEL I/IN BALSA RIDS Ir 3/A RALSA AILSOUS STOCK I/4DO MALSA. LEARPG EDAD lAD BALSA CENTER SECTION SOEEDIDO DDE N BOTTOM NALO BOOIll \OLERON III TON SERYOI WING PLAN ADVANCED TRAINER new modeling oldtimer good alternative would Micafilm very light strong covering Whatever choose follow lli AM PLY IB 3/IN60 TOP NBOTfl RIGHT PANEL 110 BALSA /660165/5 BALSA TE BALSAN PATTON BALSA SENSED ILIJ 116 BALSA11/0 SA lAG RIDS I WARS TOP 1 3/N%3/D NALNA SOtSaREA ASSLE LEFT PANEB BOSTON TOP B SODSAGEj MB BALSA 10 BALSA OITEOtL IN AIr BALSA CENTER TOP S NOTTOU\ -fr AR 60 BALSA E zvIi- -i IF -s 116 PLD _ ISIJ/0L BALSA IIDEPAAERY CENTI R SEC TIONGRAIN 1 ADEO ADOAR,ALONT END AAOEII NIB TO ThIS 1---ARSLI II /AI LYE 310 BALSAlAD DIA I/IS SAT E TOP N BOTTOMWANIC WIRE TRIM I/O TOP N SHEET 2 OF DOUBLE DUTY Trim covering away center stab covered fuselage epoxy slot proJune1987 33 0PA1 AMBIfl WINflINAINELK manufacturers instructions application rudder elevator hinges original made MonoKote hinge surfaces way familiar vided Epoxy tin rudder fuselage same way Trim covering away epoxy -in wing-mounting dowels place Cut out -in plywood tail wheel bracket pad epoxy thelocation shown mount tail wheel epoxy small wood screws Bend U-shaped tiller-holder slip piece fuel tube over tiller before capturing holder attaching rudder Before bolting engine mount firewall good idea paint firewall coat epoxy engine mounted attach fuel line carb overflow line muffler pressure tap Run piece soft iron wire through throttle Nyrod connect throttle arm U-shaped bend wire arm acts adjustment well providing strain relief servo Bend up landing gear legs Add wheels hold place gear mount metal brackets small wood screws Before installing radio assemble airplane check balance point Move battery pack servos around until balances indicated plans install radio maintain balance Connect elevator rudder servos Nyrods devises horns Make Z-bend throttle wire engage servo Check see thing reacts properly transmitter controls After range check airplane ready fly Flying Some taxi time order before first flight get feel airplane steers same ground air Hold stick well back taxiing will find ground handling gentle takeoff roll straight true first flight hold ground little forward stick until tail well up rotate airplane size such small engine climb-out exceptional balance shown plans no warps level flight should well within trim range transmitter rudder-type airplanes ex hibit some tail wag turn initiated will find tendency minimum machine Level flight can maintained throttle two notches above idle Landings almost automatic Set up approach back off throttle enjoy graceful sight comes land little flare tail wheel lands first airplane down bounce simple-to-fly configuration lets teach friends wife children fly still enjoy flying yourselfall very small investment time money fuel should have long happy life has Ailerons addition wing equipped ailerons simple inexpensive Continued page 144 34Model Aviation Thu center section aileroned wing treated differently tip-dihedraled wing well aileron servo formed separating trailing edges center ribs Because smaller size lift up center ribs proper position 1/16 shims aileron hardware simple 1/8-in brass tubing 3/32 music wire horns Slip tube wire before bending area between horns filled scrap wood Flying slow stable Double Dutygives new pilottimetothinkthrough decisions later become instinctive reflexes develop switch alleroned wing THE LEADER IN COMPETITION PROPELLERS NEW 4 CYCLE ES 100 THP DESIGN ORED HELICAL PITCH DEVELOPEDTO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALITHE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW DIAPITCH THP 1286778 136778 148778 1567 16678 NEW ii PRICE 299 379 479 689 989 PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10T020/oINCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534149 634149 72833456179 8334568189 845667199 9458677199 1045667209 106W8W209 106EW219 114677778229 115W229 116EW239 1167239 124W279 125W279 1256279 P1356349 1456459 1556859 164N969 16678989 j RC PYLON RACING SERIES 500 DIAPITCHPRICE 7SN 5N279 86778299 SERIES 400C 866777/289 9777289 W WIDE BLADE EW EXTRA WIDE IU NAARAW 1987 Cobra 400 Twin Complete WItfl Hub 4Spring Starter CID Gas & Oilngine $25000 ial Mount$2000yiition Unit$8995Limited Price Exh Stacks$1495Spark Adv$6995 Visa Master Card COD Add 5% Send $200 Catalog Homer Sales Inc 300 Dixie Hwy Beecher IL 60401 F1hone 312 946-2515 Double Duty/Randolph Continued page 34 method turning DoubleDuty good gentle advanced trainer Most flight characteristics remain same slightly smaller wing stability almost like Free Flight model somewhat reduced use less dihedral aileron-equipped wing Roll response very smooth would expected course elevator throttle responses remain same Transition three-channel sys tem full-house arrangement really easy sweaty hands time reduced first few minutes first flight Confidence first thing required comfortable flyingand airplane confidence builder Construction wing uses same airfoil method construction original tip-dihedraled wing addition ailerons hardware about different lets start point two panels complete readr joined plywood di hedral braces Notice two center ribsone panelare cut half main spar two nose ribs joined back half ribs form sides well will hold aileron servo front well main spar back scrap V16 sheet balsa trimmed fit between ribs Join wing panels dihedral braces before adding center ribs front bottom spar top trailing edge sheet center section sheeted just original wing top servo well left open Add -in sheet tips before ailerons Y16 x -in stock tapered A6 trailing edge Stock can purchased sanded shape Glue 2-in pieces aileron stock trailing edge betweenthe lasttwo ribs Sandtoblendinto tips aileron torque rods made slipping brass tube over 3/az music wire bending wire shape shown Note left right Mark location torque rod arms trailing edge relieve trailing edge locations piece rolled-up sandpaper give arms free movement Glue brass tubing place trailing edge careful get glue tubes check proper locationthat left left side etc Hold ailerons against torque rods drill leading edges match barbs end rods Slightly hollow out leading edges holes inboard allow torque rods seat thus close gap between ailerons wing After ailerons wing covered mount ailerons using epoxy secure torque rods Mount servo plywood tray glued scrap balsa risers both ends servo well Standard aileron hardware used connect aileron horns servo Plug servo receiver check proper movement Carefully sight along wing warps correct might have crept during covering wing should fit perfectly saddle fuselage trim trailing edge saddie until does Good flying Radio Technique/Myers Continued page 39 Another subject AMA has continuing effort collect type acceptance data FCC soon piece equipment qualifies hasnt roaring success have some old type acceptances Ace RIG Inc Silver Seven data newer 1980 far know idea information will stored AMA HQ made available Contest Directors others purpose identi fring narrow-band transmitter designs people doing contest-entrant transmitter proc essing will print information soon get ff1 get George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 responding advertisers mention read about Model Avi ation 144 Model Aviation
Edition: Model Aviation - 1987/06
Page Numbers: 28, 29, 30, 31, 32, 33, 34, 144
NO OCR TEXT NO OCR TEXT tion flat bench elevate out board ends two tip sections 6 match angled ribs Using sharp razor slice 1/16 joined ribs side main spars fit plywood dihedral braces Install braces check fit glue joints everything dry install bottom front spar leading edge tips glued two tip ribs Notice slant upwards become flush top top spar stubs Use scrap spar material fill between bottom main spars tips Sheet center section between spars sand completed wing stab rudder built right over plan just wing two 2 plywood spar doublers should elimi nated add much strength area plan shows 3/16-sq hardwood elevator carry-through /16 dowel will work well complete join mating surfaces sand outlines match Fuselage fuselage sides cut medium 8-lb /32 balsa sheet Dont cut wing saddle sides until after doublers glued place doublers also 3/n balsathis time hard-stock laid 450 angle grain sides doublers cemented place pin two sides together sand same outline sanding block 100-grit sandpaper still pinned together cut wing saddle drill -in holes wing-mounting dowels Separate sides add 3A2-sq longerons uprights well servoand tank-mounting rails Cut out drill firewall two cabin formers epoxy T nuts back side Left using stiller-type tall wheel steering load rudder hinges greatly reduced ground handling smoother responsive Right torsion bar landing gear easy install absorbs slot pain incurred hard landings Use type landing gear necessary simpilfy wing changes switching three-channel trainer four-channel aerobatics trainer 30 Model Aviation Muffler pressure easyto come helps maintain constantfuel flowto engine throttle control linkage has U-shaped bend just below exhaust stack acts adjustment provides strain relief servo should something bind Left Sherl Smothers cranks up Double Duty Leslie Lunch holds Model lean excellentthree-channeitrainer asthesewomen will attest Above generous tip-dihedraled wing gives Double Duty flying sense Its own abliltyto recoverfrom worst attItudes given time can save new flier 7--z 7-N PL N1 77 7N K 7 7I 1015K Z CrCL NGI N N1 -777--7 - BALSF 3HTU L TUB 0 DIR TPILV4HiL -7--- SQ L0NGR0N5 m AL5R DOUBI~R $HET TOP& BOTTOM BRLSA R~S BALSA SPAR 16 8 roP&BOTTOII N K-K Kr 96 4 7-7- -777 7 7 7p x3 *DIR flJ5IC WIR 3 / Left Trim 1/16 both top bottom two center ribs allow center-section sheeting Adding webbing during Initial assembly helps keep ribs vertical Right tip bows slant up blend airfoil Trim top spars butt against flat side bows bottom spars cut flush tip rib scrap 3/16 balsa used fill between tip Left The bottom fuselage flat both fuselage sides joined bottom bottom isqulte easyto assemblethe uprights keep both sides same Use medium 3/32 balsa forthe longerons uprights Right simple boxfuselage uses onlythe firewall two formers join sides throttle line Ny-Rod guides should installed atthls point construction Drill firewall before joining Left A 18-In plywood tail wheel pad cut out mounted after fuselage top bottom have sheeted pad allows free movement thetillerwithout modifying thetali wheel mount Right Gussets odd angles can cut holding stock overthe desired location marking outline gusset razor knife grain gusset should always run 45 angie joint itself firewall mounting bolts start assembling fuselage gluing two cabin formers place sides Make sure perpendicular side checking right triangle dry glue other fuselage side formers being sure perfect alignment first Bring tail together glue dry mount firewall prefer use epoxy hold firewall place Sheet bottom fuselage back wing saddle tail 6 balsa grain running across fuselage very tail balsa replaced V16 plywood tail wheel mount Build up glue landing gear mount place just front first cabin former Install Nyrod guides cabin area tail Drill Nyrod supports trim fit between fuselage sides Slip over Nyrods epoxy place Epoxy -in copper-tube fuel overflow lines well throttle line through firewall install floor tank compartment Wedge tank place foam connect copper tubes fuel tubing Watch eliminate kinks lines Finish cross-grain sheeting sand completed fuselage original covered Mono Kote material suggested 32 Model Aviation Full-Size Plans Available. See Page 188 316% SIr BALSASILtEDL3M PlY DOUBLER STA ILIZEN TYPICALS/15 510 TINGEBALSA FRMBE 016 BALSA WING WEB BOTTERN _BAF 110 BALjB0J 3/BWONLF ELEVATOR 3/IN DOEDT/10 DODD DORN BALSABOTTOM I/IS PLY V0 PLY DIHEDRAL BRACES BASIC TRAINER D/B NUOT RUD RODSV 1 WIREa TELSTAB TARESCREATION ROtORPASOEDIT WASIORC1NREISE TOILMOBAL110 PLYWOOD LA MOSINT DETAIL I/O PLYWOOD DIHEDRAL BRACESWING TIP DETAIL ADVANCED TRAINERDOT TO STOLE LS REDO DOLO 5/30 BALSO SIDESOROD 110 MA DOLES LANGEAR PATTERN TRIM PIN POD COSTED W RB RIB BOTTERN I/B BALSA NREET /7 I/IFSFL BALSAS/TO 60FUSELAGETOP VIEWL~\IYS BW ARSOEDOSSI/N PLY TRAYLANDING II\TO FIT FIN SAN DO 3/16 NALNAS/SO BALOM SLEETOOJSLER TO PIDEWOLLCARDED NYROD SATFUSELAGE ODORTODOSTLE LPSE NABEDEAR-SOFT ORE PUWIRODID TO IS EBSINE 3/TA SA WALSA.---PIT TO SAIDB-I PREP RECEIVER/ LARSUDROSSTONEA RALSA/3/TO RALSA STEED ISSIOEDOISY 00 S/IN BALSATAE BALSA ASSETS/TTERTSM 7 MCEST VIEWSASO510CSTATO%SRGREET DF S DO WAIBfI ~BLE DUTY OUTLINE FARTBASIC WIRE _TRAYRAILS/ RIBSDESISIED BY F RANDOLPH O 10 DIATRACING BY OE DEMARCO ________________________WREELS .aa Wt 0IA 3 43 0 3/TA NA BALSA FUSELAGE SIDE SPECIFICATIONS *160 SF60NT-lAO MODEL AVIATION /7 7 BALSA AG OS E T S r S -TANSA BALSAL POSNAPASFADS TOP 0100 PATTON RIGHT PANEL 3/B BALSA MAPS STUBS DDE AND BOTTOM 116 BALSA DENS . AERTISAL ORAlS PLY DIOEADAL MACES \ / lAIr BALGO1 SPEED TEI 3/SO Cod BDJSICAL I/B B00551 DALSO OUSOEDS TYPICAL DINGE LOCATION LEFT V ANEL I/IN BALSA RIDS Ir 3/A RALSA AILSOUS STOCK I/4DO MALSA. LEARPG EDAD lAD BALSA CENTER SECTION SOEEDIDO DDE N BOTTOM NALO BOOIll \OLERON III TON SERYOI WING PLAN ADVANCED TRAINER new modeling oldtimer good alternative would Micafilm very light strong covering Whatever choose follow lli AM PLY IB 3/IN60 TOP NBOTfl RIGHT PANEL 110 BALSA /660165/5 BALSA TE BALSAN PATTON BALSA SENSED ILIJ 116 BALSA11/0 SA lAG RIDS I WARS TOP 1 3/N%3/D NALNA SOtSaREA ASSLE LEFT PANEB BOSTON TOP B SODSAGEj MB BALSA 10 BALSA OITEOtL IN AIr BALSA CENTER TOP S NOTTOU\ -fr AR 60 BALSA E zvIi- -i IF -s 116 PLD _ ISIJ/0L BALSA IIDEPAAERY CENTI R SEC TIONGRAIN 1 ADEO ADOAR,ALONT END AAOEII NIB TO ThIS 1---ARSLI II /AI LYE 310 BALSAlAD DIA I/IS SAT E TOP N BOTTOMWANIC WIRE TRIM I/O TOP N SHEET 2 OF DOUBLE DUTY Trim covering away center stab covered fuselage epoxy slot proJune1987 33 0PA1 AMBIfl WINflINAINELK manufacturers instructions application rudder elevator hinges original made MonoKote hinge surfaces way familiar vided Epoxy tin rudder fuselage same way Trim covering away epoxy -in wing-mounting dowels place Cut out -in plywood tail wheel bracket pad epoxy thelocation shown mount tail wheel epoxy small wood screws Bend U-shaped tiller-holder slip piece fuel tube over tiller before capturing holder attaching rudder Before bolting engine mount firewall good idea paint firewall coat epoxy engine mounted attach fuel line carb overflow line muffler pressure tap Run piece soft iron wire through throttle Nyrod connect throttle arm U-shaped bend wire arm acts adjustment well providing strain relief servo Bend up landing gear legs Add wheels hold place gear mount metal brackets small wood screws Before installing radio assemble airplane check balance point Move battery pack servos around until balances indicated plans install radio maintain balance Connect elevator rudder servos Nyrods devises horns Make Z-bend throttle wire engage servo Check see thing reacts properly transmitter controls After range check airplane ready fly Flying Some taxi time order before first flight get feel airplane steers same ground air Hold stick well back taxiing will find ground handling gentle takeoff roll straight true first flight hold ground little forward stick until tail well up rotate airplane size such small engine climb-out exceptional balance shown plans no warps level flight should well within trim range transmitter rudder-type airplanes ex hibit some tail wag turn initiated will find tendency minimum machine Level flight can maintained throttle two notches above idle Landings almost automatic Set up approach back off throttle enjoy graceful sight comes land little flare tail wheel lands first airplane down bounce simple-to-fly configuration lets teach friends wife children fly still enjoy flying yourselfall very small investment time money fuel should have long happy life has Ailerons addition wing equipped ailerons simple inexpensive Continued page 144 34Model Aviation Thu center section aileroned wing treated differently tip-dihedraled wing well aileron servo formed separating trailing edges center ribs Because smaller size lift up center ribs proper position 1/16 shims aileron hardware simple 1/8-in brass tubing 3/32 music wire horns Slip tube wire before bending area between horns filled scrap wood Flying slow stable Double Dutygives new pilottimetothinkthrough decisions later become instinctive reflexes develop switch alleroned wing THE LEADER IN COMPETITION PROPELLERS NEW 4 CYCLE ES 100 THP DESIGN ORED HELICAL PITCH DEVELOPEDTO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALITHE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW DIAPITCH THP 1286778 136778 148778 1567 16678 NEW ii PRICE 299 379 479 689 989 PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10T020/oINCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534149 634149 72833456179 8334568189 845667199 9458677199 1045667209 106W8W209 106EW219 114677778229 115W229 116EW239 1167239 124W279 125W279 1256279 P1356349 1456459 1556859 164N969 16678989 j RC PYLON RACING SERIES 500 DIAPITCHPRICE 7SN 5N279 86778299 SERIES 400C 866777/289 9777289 W WIDE BLADE EW EXTRA WIDE IU NAARAW 1987 Cobra 400 Twin Complete WItfl Hub 4Spring Starter CID Gas & Oilngine $25000 ial Mount$2000yiition Unit$8995Limited Price Exh Stacks$1495Spark Adv$6995 Visa Master Card COD Add 5% Send $200 Catalog Homer Sales Inc 300 Dixie Hwy Beecher IL 60401 F1hone 312 946-2515 Double Duty/Randolph Continued page 34 method turning DoubleDuty good gentle advanced trainer Most flight characteristics remain same slightly smaller wing stability almost like Free Flight model somewhat reduced use less dihedral aileron-equipped wing Roll response very smooth would expected course elevator throttle responses remain same Transition three-channel sys tem full-house arrangement really easy sweaty hands time reduced first few minutes first flight Confidence first thing required comfortable flyingand airplane confidence builder Construction wing uses same airfoil method construction original tip-dihedraled wing addition ailerons hardware about different lets start point two panels complete readr joined plywood di hedral braces Notice two center ribsone panelare cut half main spar two nose ribs joined back half ribs form sides well will hold aileron servo front well main spar back scrap V16 sheet balsa trimmed fit between ribs Join wing panels dihedral braces before adding center ribs front bottom spar top trailing edge sheet center section sheeted just original wing top servo well left open Add -in sheet tips before ailerons Y16 x -in stock tapered A6 trailing edge Stock can purchased sanded shape Glue 2-in pieces aileron stock trailing edge betweenthe lasttwo ribs Sandtoblendinto tips aileron torque rods made slipping brass tube over 3/az music wire bending wire shape shown Note left right Mark location torque rod arms trailing edge relieve trailing edge locations piece rolled-up sandpaper give arms free movement Glue brass tubing place trailing edge careful get glue tubes check proper locationthat left left side etc Hold ailerons against torque rods drill leading edges match barbs end rods Slightly hollow out leading edges holes inboard allow torque rods seat thus close gap between ailerons wing After ailerons wing covered mount ailerons using epoxy secure torque rods Mount servo plywood tray glued scrap balsa risers both ends servo well Standard aileron hardware used connect aileron horns servo Plug servo receiver check proper movement Carefully sight along wing warps correct might have crept during covering wing should fit perfectly saddle fuselage trim trailing edge saddie until does Good flying Radio Technique/Myers Continued page 39 Another subject AMA has continuing effort collect type acceptance data FCC soon piece equipment qualifies hasnt roaring success have some old type acceptances Ace RIG Inc Silver Seven data newer 1980 far know idea information will stored AMA HQ made available Contest Directors others purpose identi fring narrow-band transmitter designs people doing contest-entrant transmitter proc essing will print information soon get ff1 get George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 responding advertisers mention read about Model Avi ation 144 Model Aviation
Edition: Model Aviation - 1987/06
Page Numbers: 28, 29, 30, 31, 32, 33, 34, 144
NO OCR TEXT NO OCR TEXT tion flat bench elevate out board ends two tip sections 6 match angled ribs Using sharp razor slice 1/16 joined ribs side main spars fit plywood dihedral braces Install braces check fit glue joints everything dry install bottom front spar leading edge tips glued two tip ribs Notice slant upwards become flush top top spar stubs Use scrap spar material fill between bottom main spars tips Sheet center section between spars sand completed wing stab rudder built right over plan just wing two 2 plywood spar doublers should elimi nated add much strength area plan shows 3/16-sq hardwood elevator carry-through /16 dowel will work well complete join mating surfaces sand outlines match Fuselage fuselage sides cut medium 8-lb /32 balsa sheet Dont cut wing saddle sides until after doublers glued place doublers also 3/n balsathis time hard-stock laid 450 angle grain sides doublers cemented place pin two sides together sand same outline sanding block 100-grit sandpaper still pinned together cut wing saddle drill -in holes wing-mounting dowels Separate sides add 3A2-sq longerons uprights well servoand tank-mounting rails Cut out drill firewall two cabin formers epoxy T nuts back side Left using stiller-type tall wheel steering load rudder hinges greatly reduced ground handling smoother responsive Right torsion bar landing gear easy install absorbs slot pain incurred hard landings Use type landing gear necessary simpilfy wing changes switching three-channel trainer four-channel aerobatics trainer 30 Model Aviation Muffler pressure easyto come helps maintain constantfuel flowto engine throttle control linkage has U-shaped bend just below exhaust stack acts adjustment provides strain relief servo should something bind Left Sherl Smothers cranks up Double Duty Leslie Lunch holds Model lean excellentthree-channeitrainer asthesewomen will attest Above generous tip-dihedraled wing gives Double Duty flying sense Its own abliltyto recoverfrom worst attItudes given time can save new flier 7--z 7-N PL N1 77 7N K 7 7I 1015K Z CrCL NGI N N1 -777--7 - BALSF 3HTU L TUB 0 DIR TPILV4HiL -7--- SQ L0NGR0N5 m AL5R DOUBI~R $HET TOP& BOTTOM BRLSA R~S BALSA SPAR 16 8 roP&BOTTOII N K-K Kr 96 4 7-7- -777 7 7 7p x3 *DIR flJ5IC WIR 3 / Left Trim 1/16 both top bottom two center ribs allow center-section sheeting Adding webbing during Initial assembly helps keep ribs vertical Right tip bows slant up blend airfoil Trim top spars butt against flat side bows bottom spars cut flush tip rib scrap 3/16 balsa used fill between tip Left The bottom fuselage flat both fuselage sides joined bottom bottom isqulte easyto assemblethe uprights keep both sides same Use medium 3/32 balsa forthe longerons uprights Right simple boxfuselage uses onlythe firewall two formers join sides throttle line Ny-Rod guides should installed atthls point construction Drill firewall before joining Left A 18-In plywood tail wheel pad cut out mounted after fuselage top bottom have sheeted pad allows free movement thetillerwithout modifying thetali wheel mount Right Gussets odd angles can cut holding stock overthe desired location marking outline gusset razor knife grain gusset should always run 45 angie joint itself firewall mounting bolts start assembling fuselage gluing two cabin formers place sides Make sure perpendicular side checking right triangle dry glue other fuselage side formers being sure perfect alignment first Bring tail together glue dry mount firewall prefer use epoxy hold firewall place Sheet bottom fuselage back wing saddle tail 6 balsa grain running across fuselage very tail balsa replaced V16 plywood tail wheel mount Build up glue landing gear mount place just front first cabin former Install Nyrod guides cabin area tail Drill Nyrod supports trim fit between fuselage sides Slip over Nyrods epoxy place Epoxy -in copper-tube fuel overflow lines well throttle line through firewall install floor tank compartment Wedge tank place foam connect copper tubes fuel tubing Watch eliminate kinks lines Finish cross-grain sheeting sand completed fuselage original covered Mono Kote material suggested 32 Model Aviation Full-Size Plans Available. See Page 188 316% SIr BALSASILtEDL3M PlY DOUBLER STA ILIZEN TYPICALS/15 510 TINGEBALSA FRMBE 016 BALSA WING WEB BOTTERN _BAF 110 BALjB0J 3/BWONLF ELEVATOR 3/IN DOEDT/10 DODD DORN BALSABOTTOM I/IS PLY V0 PLY DIHEDRAL BRACES BASIC TRAINER D/B NUOT RUD RODSV 1 WIREa TELSTAB TARESCREATION ROtORPASOEDIT WASIORC1NREISE TOILMOBAL110 PLYWOOD LA MOSINT DETAIL I/O PLYWOOD DIHEDRAL BRACESWING TIP DETAIL ADVANCED TRAINERDOT TO STOLE LS REDO DOLO 5/30 BALSO SIDESOROD 110 MA DOLES LANGEAR PATTERN TRIM PIN POD COSTED W RB RIB BOTTERN I/B BALSA NREET /7 I/IFSFL BALSAS/TO 60FUSELAGETOP VIEWL~\IYS BW ARSOEDOSSI/N PLY TRAYLANDING II\TO FIT FIN SAN DO 3/16 NALNAS/SO BALOM SLEETOOJSLER TO PIDEWOLLCARDED NYROD SATFUSELAGE ODORTODOSTLE LPSE NABEDEAR-SOFT ORE PUWIRODID TO IS EBSINE 3/TA SA WALSA.---PIT TO SAIDB-I PREP RECEIVER/ LARSUDROSSTONEA RALSA/3/TO RALSA STEED ISSIOEDOISY 00 S/IN BALSATAE BALSA ASSETS/TTERTSM 7 MCEST VIEWSASO510CSTATO%SRGREET DF S DO WAIBfI ~BLE DUTY OUTLINE FARTBASIC WIRE _TRAYRAILS/ RIBSDESISIED BY F RANDOLPH O 10 DIATRACING BY OE DEMARCO ________________________WREELS .aa Wt 0IA 3 43 0 3/TA NA BALSA FUSELAGE SIDE SPECIFICATIONS *160 SF60NT-lAO MODEL AVIATION /7 7 BALSA AG OS E T S r S -TANSA BALSAL POSNAPASFADS TOP 0100 PATTON RIGHT PANEL 3/B BALSA MAPS STUBS DDE AND BOTTOM 116 BALSA DENS . AERTISAL ORAlS PLY DIOEADAL MACES \ / lAIr BALGO1 SPEED TEI 3/SO Cod BDJSICAL I/B B00551 DALSO OUSOEDS TYPICAL DINGE LOCATION LEFT V ANEL I/IN BALSA RIDS Ir 3/A RALSA AILSOUS STOCK I/4DO MALSA. LEARPG EDAD lAD BALSA CENTER SECTION SOEEDIDO DDE N BOTTOM NALO BOOIll \OLERON III TON SERYOI WING PLAN ADVANCED TRAINER new modeling oldtimer good alternative would Micafilm very light strong covering Whatever choose follow lli AM PLY IB 3/IN60 TOP NBOTfl RIGHT PANEL 110 BALSA /660165/5 BALSA TE BALSAN PATTON BALSA SENSED ILIJ 116 BALSA11/0 SA lAG RIDS I WARS TOP 1 3/N%3/D NALNA SOtSaREA ASSLE LEFT PANEB BOSTON TOP B SODSAGEj MB BALSA 10 BALSA OITEOtL IN AIr BALSA CENTER TOP S NOTTOU\ -fr AR 60 BALSA E zvIi- -i IF -s 116 PLD _ ISIJ/0L BALSA IIDEPAAERY CENTI R SEC TIONGRAIN 1 ADEO ADOAR,ALONT END AAOEII NIB TO ThIS 1---ARSLI II /AI LYE 310 BALSAlAD DIA I/IS SAT E TOP N BOTTOMWANIC WIRE TRIM I/O TOP N SHEET 2 OF DOUBLE DUTY Trim covering away center stab covered fuselage epoxy slot proJune1987 33 0PA1 AMBIfl WINflINAINELK manufacturers instructions application rudder elevator hinges original made MonoKote hinge surfaces way familiar vided Epoxy tin rudder fuselage same way Trim covering away epoxy -in wing-mounting dowels place Cut out -in plywood tail wheel bracket pad epoxy thelocation shown mount tail wheel epoxy small wood screws Bend U-shaped tiller-holder slip piece fuel tube over tiller before capturing holder attaching rudder Before bolting engine mount firewall good idea paint firewall coat epoxy engine mounted attach fuel line carb overflow line muffler pressure tap Run piece soft iron wire through throttle Nyrod connect throttle arm U-shaped bend wire arm acts adjustment well providing strain relief servo Bend up landing gear legs Add wheels hold place gear mount metal brackets small wood screws Before installing radio assemble airplane check balance point Move battery pack servos around until balances indicated plans install radio maintain balance Connect elevator rudder servos Nyrods devises horns Make Z-bend throttle wire engage servo Check see thing reacts properly transmitter controls After range check airplane ready fly Flying Some taxi time order before first flight get feel airplane steers same ground air Hold stick well back taxiing will find ground handling gentle takeoff roll straight true first flight hold ground little forward stick until tail well up rotate airplane size such small engine climb-out exceptional balance shown plans no warps level flight should well within trim range transmitter rudder-type airplanes ex hibit some tail wag turn initiated will find tendency minimum machine Level flight can maintained throttle two notches above idle Landings almost automatic Set up approach back off throttle enjoy graceful sight comes land little flare tail wheel lands first airplane down bounce simple-to-fly configuration lets teach friends wife children fly still enjoy flying yourselfall very small investment time money fuel should have long happy life has Ailerons addition wing equipped ailerons simple inexpensive Continued page 144 34Model Aviation Thu center section aileroned wing treated differently tip-dihedraled wing well aileron servo formed separating trailing edges center ribs Because smaller size lift up center ribs proper position 1/16 shims aileron hardware simple 1/8-in brass tubing 3/32 music wire horns Slip tube wire before bending area between horns filled scrap wood Flying slow stable Double Dutygives new pilottimetothinkthrough decisions later become instinctive reflexes develop switch alleroned wing THE LEADER IN COMPETITION PROPELLERS NEW 4 CYCLE ES 100 THP DESIGN ORED HELICAL PITCH DEVELOPEDTO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALITHE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW DIAPITCH THP 1286778 136778 148778 1567 16678 NEW ii PRICE 299 379 479 689 989 PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10T020/oINCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534149 634149 72833456179 8334568189 845667199 9458677199 1045667209 106W8W209 106EW219 114677778229 115W229 116EW239 1167239 124W279 125W279 1256279 P1356349 1456459 1556859 164N969 16678989 j RC PYLON RACING SERIES 500 DIAPITCHPRICE 7SN 5N279 86778299 SERIES 400C 866777/289 9777289 W WIDE BLADE EW EXTRA WIDE IU NAARAW 1987 Cobra 400 Twin Complete WItfl Hub 4Spring Starter CID Gas & Oilngine $25000 ial Mount$2000yiition Unit$8995Limited Price Exh Stacks$1495Spark Adv$6995 Visa Master Card COD Add 5% Send $200 Catalog Homer Sales Inc 300 Dixie Hwy Beecher IL 60401 F1hone 312 946-2515 Double Duty/Randolph Continued page 34 method turning DoubleDuty good gentle advanced trainer Most flight characteristics remain same slightly smaller wing stability almost like Free Flight model somewhat reduced use less dihedral aileron-equipped wing Roll response very smooth would expected course elevator throttle responses remain same Transition three-channel sys tem full-house arrangement really easy sweaty hands time reduced first few minutes first flight Confidence first thing required comfortable flyingand airplane confidence builder Construction wing uses same airfoil method construction original tip-dihedraled wing addition ailerons hardware about different lets start point two panels complete readr joined plywood di hedral braces Notice two center ribsone panelare cut half main spar two nose ribs joined back half ribs form sides well will hold aileron servo front well main spar back scrap V16 sheet balsa trimmed fit between ribs Join wing panels dihedral braces before adding center ribs front bottom spar top trailing edge sheet center section sheeted just original wing top servo well left open Add -in sheet tips before ailerons Y16 x -in stock tapered A6 trailing edge Stock can purchased sanded shape Glue 2-in pieces aileron stock trailing edge betweenthe lasttwo ribs Sandtoblendinto tips aileron torque rods made slipping brass tube over 3/az music wire bending wire shape shown Note left right Mark location torque rod arms trailing edge relieve trailing edge locations piece rolled-up sandpaper give arms free movement Glue brass tubing place trailing edge careful get glue tubes check proper locationthat left left side etc Hold ailerons against torque rods drill leading edges match barbs end rods Slightly hollow out leading edges holes inboard allow torque rods seat thus close gap between ailerons wing After ailerons wing covered mount ailerons using epoxy secure torque rods Mount servo plywood tray glued scrap balsa risers both ends servo well Standard aileron hardware used connect aileron horns servo Plug servo receiver check proper movement Carefully sight along wing warps correct might have crept during covering wing should fit perfectly saddle fuselage trim trailing edge saddie until does Good flying Radio Technique/Myers Continued page 39 Another subject AMA has continuing effort collect type acceptance data FCC soon piece equipment qualifies hasnt roaring success have some old type acceptances Ace RIG Inc Silver Seven data newer 1980 far know idea information will stored AMA HQ made available Contest Directors others purpose identi fring narrow-band transmitter designs people doing contest-entrant transmitter proc essing will print information soon get ff1 get George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 responding advertisers mention read about Model Avi ation 144 Model Aviation
Edition: Model Aviation - 1987/06
Page Numbers: 28, 29, 30, 31, 32, 33, 34, 144
NO OCR TEXT NO OCR TEXT tion flat bench elevate out board ends two tip sections 6 match angled ribs Using sharp razor slice 1/16 joined ribs side main spars fit plywood dihedral braces Install braces check fit glue joints everything dry install bottom front spar leading edge tips glued two tip ribs Notice slant upwards become flush top top spar stubs Use scrap spar material fill between bottom main spars tips Sheet center section between spars sand completed wing stab rudder built right over plan just wing two 2 plywood spar doublers should elimi nated add much strength area plan shows 3/16-sq hardwood elevator carry-through /16 dowel will work well complete join mating surfaces sand outlines match Fuselage fuselage sides cut medium 8-lb /32 balsa sheet Dont cut wing saddle sides until after doublers glued place doublers also 3/n balsathis time hard-stock laid 450 angle grain sides doublers cemented place pin two sides together sand same outline sanding block 100-grit sandpaper still pinned together cut wing saddle drill -in holes wing-mounting dowels Separate sides add 3A2-sq longerons uprights well servoand tank-mounting rails Cut out drill firewall two cabin formers epoxy T nuts back side Left using stiller-type tall wheel steering load rudder hinges greatly reduced ground handling smoother responsive Right torsion bar landing gear easy install absorbs slot pain incurred hard landings Use type landing gear necessary simpilfy wing changes switching three-channel trainer four-channel aerobatics trainer 30 Model Aviation Muffler pressure easyto come helps maintain constantfuel flowto engine throttle control linkage has U-shaped bend just below exhaust stack acts adjustment provides strain relief servo should something bind Left Sherl Smothers cranks up Double Duty Leslie Lunch holds Model lean excellentthree-channeitrainer asthesewomen will attest Above generous tip-dihedraled wing gives Double Duty flying sense Its own abliltyto recoverfrom worst attItudes given time can save new flier 7--z 7-N PL N1 77 7N K 7 7I 1015K Z CrCL NGI N N1 -777--7 - BALSF 3HTU L TUB 0 DIR TPILV4HiL -7--- SQ L0NGR0N5 m AL5R DOUBI~R $HET TOP& BOTTOM BRLSA R~S BALSA SPAR 16 8 roP&BOTTOII N K-K Kr 96 4 7-7- -777 7 7 7p x3 *DIR flJ5IC WIR 3 / Left Trim 1/16 both top bottom two center ribs allow center-section sheeting Adding webbing during Initial assembly helps keep ribs vertical Right tip bows slant up blend airfoil Trim top spars butt against flat side bows bottom spars cut flush tip rib scrap 3/16 balsa used fill between tip Left The bottom fuselage flat both fuselage sides joined bottom bottom isqulte easyto assemblethe uprights keep both sides same Use medium 3/32 balsa forthe longerons uprights Right simple boxfuselage uses onlythe firewall two formers join sides throttle line Ny-Rod guides should installed atthls point construction Drill firewall before joining Left A 18-In plywood tail wheel pad cut out mounted after fuselage top bottom have sheeted pad allows free movement thetillerwithout modifying thetali wheel mount Right Gussets odd angles can cut holding stock overthe desired location marking outline gusset razor knife grain gusset should always run 45 angie joint itself firewall mounting bolts start assembling fuselage gluing two cabin formers place sides Make sure perpendicular side checking right triangle dry glue other fuselage side formers being sure perfect alignment first Bring tail together glue dry mount firewall prefer use epoxy hold firewall place Sheet bottom fuselage back wing saddle tail 6 balsa grain running across fuselage very tail balsa replaced V16 plywood tail wheel mount Build up glue landing gear mount place just front first cabin former Install Nyrod guides cabin area tail Drill Nyrod supports trim fit between fuselage sides Slip over Nyrods epoxy place Epoxy -in copper-tube fuel overflow lines well throttle line through firewall install floor tank compartment Wedge tank place foam connect copper tubes fuel tubing Watch eliminate kinks lines Finish cross-grain sheeting sand completed fuselage original covered Mono Kote material suggested 32 Model Aviation Full-Size Plans Available. See Page 188 316% SIr BALSASILtEDL3M PlY DOUBLER STA ILIZEN TYPICALS/15 510 TINGEBALSA FRMBE 016 BALSA WING WEB BOTTERN _BAF 110 BALjB0J 3/BWONLF ELEVATOR 3/IN DOEDT/10 DODD DORN BALSABOTTOM I/IS PLY V0 PLY DIHEDRAL BRACES BASIC TRAINER D/B NUOT RUD RODSV 1 WIREa TELSTAB TARESCREATION ROtORPASOEDIT WASIORC1NREISE TOILMOBAL110 PLYWOOD LA MOSINT DETAIL I/O PLYWOOD DIHEDRAL BRACESWING TIP DETAIL ADVANCED TRAINERDOT TO STOLE LS REDO DOLO 5/30 BALSO SIDESOROD 110 MA DOLES LANGEAR PATTERN TRIM PIN POD COSTED W RB RIB BOTTERN I/B BALSA NREET /7 I/IFSFL BALSAS/TO 60FUSELAGETOP VIEWL~\IYS BW ARSOEDOSSI/N PLY TRAYLANDING II\TO FIT FIN SAN DO 3/16 NALNAS/SO BALOM SLEETOOJSLER TO PIDEWOLLCARDED NYROD SATFUSELAGE ODORTODOSTLE LPSE NABEDEAR-SOFT ORE PUWIRODID TO IS EBSINE 3/TA SA WALSA.---PIT TO SAIDB-I PREP RECEIVER/ LARSUDROSSTONEA RALSA/3/TO RALSA STEED ISSIOEDOISY 00 S/IN BALSATAE BALSA ASSETS/TTERTSM 7 MCEST VIEWSASO510CSTATO%SRGREET DF S DO WAIBfI ~BLE DUTY OUTLINE FARTBASIC WIRE _TRAYRAILS/ RIBSDESISIED BY F RANDOLPH O 10 DIATRACING BY OE DEMARCO ________________________WREELS .aa Wt 0IA 3 43 0 3/TA NA BALSA FUSELAGE SIDE SPECIFICATIONS *160 SF60NT-lAO MODEL AVIATION /7 7 BALSA AG OS E T S r S -TANSA BALSAL POSNAPASFADS TOP 0100 PATTON RIGHT PANEL 3/B BALSA MAPS STUBS DDE AND BOTTOM 116 BALSA DENS . AERTISAL ORAlS PLY DIOEADAL MACES \ / lAIr BALGO1 SPEED TEI 3/SO Cod BDJSICAL I/B B00551 DALSO OUSOEDS TYPICAL DINGE LOCATION LEFT V ANEL I/IN BALSA RIDS Ir 3/A RALSA AILSOUS STOCK I/4DO MALSA. LEARPG EDAD lAD BALSA CENTER SECTION SOEEDIDO DDE N BOTTOM NALO BOOIll \OLERON III TON SERYOI WING PLAN ADVANCED TRAINER new modeling oldtimer good alternative would Micafilm very light strong covering Whatever choose follow lli AM PLY IB 3/IN60 TOP NBOTfl RIGHT PANEL 110 BALSA /660165/5 BALSA TE BALSAN PATTON BALSA SENSED ILIJ 116 BALSA11/0 SA lAG RIDS I WARS TOP 1 3/N%3/D NALNA SOtSaREA ASSLE LEFT PANEB BOSTON TOP B SODSAGEj MB BALSA 10 BALSA OITEOtL IN AIr BALSA CENTER TOP S NOTTOU\ -fr AR 60 BALSA E zvIi- -i IF -s 116 PLD _ ISIJ/0L BALSA IIDEPAAERY CENTI R SEC TIONGRAIN 1 ADEO ADOAR,ALONT END AAOEII NIB TO ThIS 1---ARSLI II /AI LYE 310 BALSAlAD DIA I/IS SAT E TOP N BOTTOMWANIC WIRE TRIM I/O TOP N SHEET 2 OF DOUBLE DUTY Trim covering away center stab covered fuselage epoxy slot proJune1987 33 0PA1 AMBIfl WINflINAINELK manufacturers instructions application rudder elevator hinges original made MonoKote hinge surfaces way familiar vided Epoxy tin rudder fuselage same way Trim covering away epoxy -in wing-mounting dowels place Cut out -in plywood tail wheel bracket pad epoxy thelocation shown mount tail wheel epoxy small wood screws Bend U-shaped tiller-holder slip piece fuel tube over tiller before capturing holder attaching rudder Before bolting engine mount firewall good idea paint firewall coat epoxy engine mounted attach fuel line carb overflow line muffler pressure tap Run piece soft iron wire through throttle Nyrod connect throttle arm U-shaped bend wire arm acts adjustment well providing strain relief servo Bend up landing gear legs Add wheels hold place gear mount metal brackets small wood screws Before installing radio assemble airplane check balance point Move battery pack servos around until balances indicated plans install radio maintain balance Connect elevator rudder servos Nyrods devises horns Make Z-bend throttle wire engage servo Check see thing reacts properly transmitter controls After range check airplane ready fly Flying Some taxi time order before first flight get feel airplane steers same ground air Hold stick well back taxiing will find ground handling gentle takeoff roll straight true first flight hold ground little forward stick until tail well up rotate airplane size such small engine climb-out exceptional balance shown plans no warps level flight should well within trim range transmitter rudder-type airplanes ex hibit some tail wag turn initiated will find tendency minimum machine Level flight can maintained throttle two notches above idle Landings almost automatic Set up approach back off throttle enjoy graceful sight comes land little flare tail wheel lands first airplane down bounce simple-to-fly configuration lets teach friends wife children fly still enjoy flying yourselfall very small investment time money fuel should have long happy life has Ailerons addition wing equipped ailerons simple inexpensive Continued page 144 34Model Aviation Thu center section aileroned wing treated differently tip-dihedraled wing well aileron servo formed separating trailing edges center ribs Because smaller size lift up center ribs proper position 1/16 shims aileron hardware simple 1/8-in brass tubing 3/32 music wire horns Slip tube wire before bending area between horns filled scrap wood Flying slow stable Double Dutygives new pilottimetothinkthrough decisions later become instinctive reflexes develop switch alleroned wing THE LEADER IN COMPETITION PROPELLERS NEW 4 CYCLE ES 100 THP DESIGN ORED HELICAL PITCH DEVELOPEDTO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALITHE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW DIAPITCH THP 1286778 136778 148778 1567 16678 NEW ii PRICE 299 379 479 689 989 PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10T020/oINCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534149 634149 72833456179 8334568189 845667199 9458677199 1045667209 106W8W209 106EW219 114677778229 115W229 116EW239 1167239 124W279 125W279 1256279 P1356349 1456459 1556859 164N969 16678989 j RC PYLON RACING SERIES 500 DIAPITCHPRICE 7SN 5N279 86778299 SERIES 400C 866777/289 9777289 W WIDE BLADE EW EXTRA WIDE IU NAARAW 1987 Cobra 400 Twin Complete WItfl Hub 4Spring Starter CID Gas & Oilngine $25000 ial Mount$2000yiition Unit$8995Limited Price Exh Stacks$1495Spark Adv$6995 Visa Master Card COD Add 5% Send $200 Catalog Homer Sales Inc 300 Dixie Hwy Beecher IL 60401 F1hone 312 946-2515 Double Duty/Randolph Continued page 34 method turning DoubleDuty good gentle advanced trainer Most flight characteristics remain same slightly smaller wing stability almost like Free Flight model somewhat reduced use less dihedral aileron-equipped wing Roll response very smooth would expected course elevator throttle responses remain same Transition three-channel sys tem full-house arrangement really easy sweaty hands time reduced first few minutes first flight Confidence first thing required comfortable flyingand airplane confidence builder Construction wing uses same airfoil method construction original tip-dihedraled wing addition ailerons hardware about different lets start point two panels complete readr joined plywood di hedral braces Notice two center ribsone panelare cut half main spar two nose ribs joined back half ribs form sides well will hold aileron servo front well main spar back scrap V16 sheet balsa trimmed fit between ribs Join wing panels dihedral braces before adding center ribs front bottom spar top trailing edge sheet center section sheeted just original wing top servo well left open Add -in sheet tips before ailerons Y16 x -in stock tapered A6 trailing edge Stock can purchased sanded shape Glue 2-in pieces aileron stock trailing edge betweenthe lasttwo ribs Sandtoblendinto tips aileron torque rods made slipping brass tube over 3/az music wire bending wire shape shown Note left right Mark location torque rod arms trailing edge relieve trailing edge locations piece rolled-up sandpaper give arms free movement Glue brass tubing place trailing edge careful get glue tubes check proper locationthat left left side etc Hold ailerons against torque rods drill leading edges match barbs end rods Slightly hollow out leading edges holes inboard allow torque rods seat thus close gap between ailerons wing After ailerons wing covered mount ailerons using epoxy secure torque rods Mount servo plywood tray glued scrap balsa risers both ends servo well Standard aileron hardware used connect aileron horns servo Plug servo receiver check proper movement Carefully sight along wing warps correct might have crept during covering wing should fit perfectly saddle fuselage trim trailing edge saddie until does Good flying Radio Technique/Myers Continued page 39 Another subject AMA has continuing effort collect type acceptance data FCC soon piece equipment qualifies hasnt roaring success have some old type acceptances Ace RIG Inc Silver Seven data newer 1980 far know idea information will stored AMA HQ made available Contest Directors others purpose identi fring narrow-band transmitter designs people doing contest-entrant transmitter proc essing will print information soon get ff1 get George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 responding advertisers mention read about Model Avi ation 144 Model Aviation
Edition: Model Aviation - 1987/06
Page Numbers: 28, 29, 30, 31, 32, 33, 34, 144
NO OCR TEXT NO OCR TEXT tion flat bench elevate out board ends two tip sections 6 match angled ribs Using sharp razor slice 1/16 joined ribs side main spars fit plywood dihedral braces Install braces check fit glue joints everything dry install bottom front spar leading edge tips glued two tip ribs Notice slant upwards become flush top top spar stubs Use scrap spar material fill between bottom main spars tips Sheet center section between spars sand completed wing stab rudder built right over plan just wing two 2 plywood spar doublers should elimi nated add much strength area plan shows 3/16-sq hardwood elevator carry-through /16 dowel will work well complete join mating surfaces sand outlines match Fuselage fuselage sides cut medium 8-lb /32 balsa sheet Dont cut wing saddle sides until after doublers glued place doublers also 3/n balsathis time hard-stock laid 450 angle grain sides doublers cemented place pin two sides together sand same outline sanding block 100-grit sandpaper still pinned together cut wing saddle drill -in holes wing-mounting dowels Separate sides add 3A2-sq longerons uprights well servoand tank-mounting rails Cut out drill firewall two cabin formers epoxy T nuts back side Left using stiller-type tall wheel steering load rudder hinges greatly reduced ground handling smoother responsive Right torsion bar landing gear easy install absorbs slot pain incurred hard landings Use type landing gear necessary simpilfy wing changes switching three-channel trainer four-channel aerobatics trainer 30 Model Aviation Muffler pressure easyto come helps maintain constantfuel flowto engine throttle control linkage has U-shaped bend just below exhaust stack acts adjustment provides strain relief servo should something bind Left Sherl Smothers cranks up Double Duty Leslie Lunch holds Model lean excellentthree-channeitrainer asthesewomen will attest Above generous tip-dihedraled wing gives Double Duty flying sense Its own abliltyto recoverfrom worst attItudes given time can save new flier 7--z 7-N PL N1 77 7N K 7 7I 1015K Z CrCL NGI N N1 -777--7 - BALSF 3HTU L TUB 0 DIR TPILV4HiL -7--- SQ L0NGR0N5 m AL5R DOUBI~R $HET TOP& BOTTOM BRLSA R~S BALSA SPAR 16 8 roP&BOTTOII N K-K Kr 96 4 7-7- -777 7 7 7p x3 *DIR flJ5IC WIR 3 / Left Trim 1/16 both top bottom two center ribs allow center-section sheeting Adding webbing during Initial assembly helps keep ribs vertical Right tip bows slant up blend airfoil Trim top spars butt against flat side bows bottom spars cut flush tip rib scrap 3/16 balsa used fill between tip Left The bottom fuselage flat both fuselage sides joined bottom bottom isqulte easyto assemblethe uprights keep both sides same Use medium 3/32 balsa forthe longerons uprights Right simple boxfuselage uses onlythe firewall two formers join sides throttle line Ny-Rod guides should installed atthls point construction Drill firewall before joining Left A 18-In plywood tail wheel pad cut out mounted after fuselage top bottom have sheeted pad allows free movement thetillerwithout modifying thetali wheel mount Right Gussets odd angles can cut holding stock overthe desired location marking outline gusset razor knife grain gusset should always run 45 angie joint itself firewall mounting bolts start assembling fuselage gluing two cabin formers place sides Make sure perpendicular side checking right triangle dry glue other fuselage side formers being sure perfect alignment first Bring tail together glue dry mount firewall prefer use epoxy hold firewall place Sheet bottom fuselage back wing saddle tail 6 balsa grain running across fuselage very tail balsa replaced V16 plywood tail wheel mount Build up glue landing gear mount place just front first cabin former Install Nyrod guides cabin area tail Drill Nyrod supports trim fit between fuselage sides Slip over Nyrods epoxy place Epoxy -in copper-tube fuel overflow lines well throttle line through firewall install floor tank compartment Wedge tank place foam connect copper tubes fuel tubing Watch eliminate kinks lines Finish cross-grain sheeting sand completed fuselage original covered Mono Kote material suggested 32 Model Aviation Full-Size Plans Available. See Page 188 316% SIr BALSASILtEDL3M PlY DOUBLER STA ILIZEN TYPICALS/15 510 TINGEBALSA FRMBE 016 BALSA WING WEB BOTTERN _BAF 110 BALjB0J 3/BWONLF ELEVATOR 3/IN DOEDT/10 DODD DORN BALSABOTTOM I/IS PLY V0 PLY DIHEDRAL BRACES BASIC TRAINER D/B NUOT RUD RODSV 1 WIREa TELSTAB TARESCREATION ROtORPASOEDIT WASIORC1NREISE TOILMOBAL110 PLYWOOD LA MOSINT DETAIL I/O PLYWOOD DIHEDRAL BRACESWING TIP DETAIL ADVANCED TRAINERDOT TO STOLE LS REDO DOLO 5/30 BALSO SIDESOROD 110 MA DOLES LANGEAR PATTERN TRIM PIN POD COSTED W RB RIB BOTTERN I/B BALSA NREET /7 I/IFSFL BALSAS/TO 60FUSELAGETOP VIEWL~\IYS BW ARSOEDOSSI/N PLY TRAYLANDING II\TO FIT FIN SAN DO 3/16 NALNAS/SO BALOM SLEETOOJSLER TO PIDEWOLLCARDED NYROD SATFUSELAGE ODORTODOSTLE LPSE NABEDEAR-SOFT ORE PUWIRODID TO IS EBSINE 3/TA SA WALSA.---PIT TO SAIDB-I PREP RECEIVER/ LARSUDROSSTONEA RALSA/3/TO RALSA STEED ISSIOEDOISY 00 S/IN BALSATAE BALSA ASSETS/TTERTSM 7 MCEST VIEWSASO510CSTATO%SRGREET DF S DO WAIBfI ~BLE DUTY OUTLINE FARTBASIC WIRE _TRAYRAILS/ RIBSDESISIED BY F RANDOLPH O 10 DIATRACING BY OE DEMARCO ________________________WREELS .aa Wt 0IA 3 43 0 3/TA NA BALSA FUSELAGE SIDE SPECIFICATIONS *160 SF60NT-lAO MODEL AVIATION /7 7 BALSA AG OS E T S r S -TANSA BALSAL POSNAPASFADS TOP 0100 PATTON RIGHT PANEL 3/B BALSA MAPS STUBS DDE AND BOTTOM 116 BALSA DENS . AERTISAL ORAlS PLY DIOEADAL MACES \ / lAIr BALGO1 SPEED TEI 3/SO Cod BDJSICAL I/B B00551 DALSO OUSOEDS TYPICAL DINGE LOCATION LEFT V ANEL I/IN BALSA RIDS Ir 3/A RALSA AILSOUS STOCK I/4DO MALSA. LEARPG EDAD lAD BALSA CENTER SECTION SOEEDIDO DDE N BOTTOM NALO BOOIll \OLERON III TON SERYOI WING PLAN ADVANCED TRAINER new modeling oldtimer good alternative would Micafilm very light strong covering Whatever choose follow lli AM PLY IB 3/IN60 TOP NBOTfl RIGHT PANEL 110 BALSA /660165/5 BALSA TE BALSAN PATTON BALSA SENSED ILIJ 116 BALSA11/0 SA lAG RIDS I WARS TOP 1 3/N%3/D NALNA SOtSaREA ASSLE LEFT PANEB BOSTON TOP B SODSAGEj MB BALSA 10 BALSA OITEOtL IN AIr BALSA CENTER TOP S NOTTOU\ -fr AR 60 BALSA E zvIi- -i IF -s 116 PLD _ ISIJ/0L BALSA IIDEPAAERY CENTI R SEC TIONGRAIN 1 ADEO ADOAR,ALONT END AAOEII NIB TO ThIS 1---ARSLI II /AI LYE 310 BALSAlAD DIA I/IS SAT E TOP N BOTTOMWANIC WIRE TRIM I/O TOP N SHEET 2 OF DOUBLE DUTY Trim covering away center stab covered fuselage epoxy slot proJune1987 33 0PA1 AMBIfl WINflINAINELK manufacturers instructions application rudder elevator hinges original made MonoKote hinge surfaces way familiar vided Epoxy tin rudder fuselage same way Trim covering away epoxy -in wing-mounting dowels place Cut out -in plywood tail wheel bracket pad epoxy thelocation shown mount tail wheel epoxy small wood screws Bend U-shaped tiller-holder slip piece fuel tube over tiller before capturing holder attaching rudder Before bolting engine mount firewall good idea paint firewall coat epoxy engine mounted attach fuel line carb overflow line muffler pressure tap Run piece soft iron wire through throttle Nyrod connect throttle arm U-shaped bend wire arm acts adjustment well providing strain relief servo Bend up landing gear legs Add wheels hold place gear mount metal brackets small wood screws Before installing radio assemble airplane check balance point Move battery pack servos around until balances indicated plans install radio maintain balance Connect elevator rudder servos Nyrods devises horns Make Z-bend throttle wire engage servo Check see thing reacts properly transmitter controls After range check airplane ready fly Flying Some taxi time order before first flight get feel airplane steers same ground air Hold stick well back taxiing will find ground handling gentle takeoff roll straight true first flight hold ground little forward stick until tail well up rotate airplane size such small engine climb-out exceptional balance shown plans no warps level flight should well within trim range transmitter rudder-type airplanes ex hibit some tail wag turn initiated will find tendency minimum machine Level flight can maintained throttle two notches above idle Landings almost automatic Set up approach back off throttle enjoy graceful sight comes land little flare tail wheel lands first airplane down bounce simple-to-fly configuration lets teach friends wife children fly still enjoy flying yourselfall very small investment time money fuel should have long happy life has Ailerons addition wing equipped ailerons simple inexpensive Continued page 144 34Model Aviation Thu center section aileroned wing treated differently tip-dihedraled wing well aileron servo formed separating trailing edges center ribs Because smaller size lift up center ribs proper position 1/16 shims aileron hardware simple 1/8-in brass tubing 3/32 music wire horns Slip tube wire before bending area between horns filled scrap wood Flying slow stable Double Dutygives new pilottimetothinkthrough decisions later become instinctive reflexes develop switch alleroned wing THE LEADER IN COMPETITION PROPELLERS NEW 4 CYCLE ES 100 THP DESIGN ORED HELICAL PITCH DEVELOPEDTO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALITHE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW DIAPITCH THP 1286778 136778 148778 1567 16678 NEW ii PRICE 299 379 479 689 989 PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10T020/oINCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534149 634149 72833456179 8334568189 845667199 9458677199 1045667209 106W8W209 106EW219 114677778229 115W229 116EW239 1167239 124W279 125W279 1256279 P1356349 1456459 1556859 164N969 16678989 j RC PYLON RACING SERIES 500 DIAPITCHPRICE 7SN 5N279 86778299 SERIES 400C 866777/289 9777289 W WIDE BLADE EW EXTRA WIDE IU NAARAW 1987 Cobra 400 Twin Complete WItfl Hub 4Spring Starter CID Gas & Oilngine $25000 ial Mount$2000yiition Unit$8995Limited Price Exh Stacks$1495Spark Adv$6995 Visa Master Card COD Add 5% Send $200 Catalog Homer Sales Inc 300 Dixie Hwy Beecher IL 60401 F1hone 312 946-2515 Double Duty/Randolph Continued page 34 method turning DoubleDuty good gentle advanced trainer Most flight characteristics remain same slightly smaller wing stability almost like Free Flight model somewhat reduced use less dihedral aileron-equipped wing Roll response very smooth would expected course elevator throttle responses remain same Transition three-channel sys tem full-house arrangement really easy sweaty hands time reduced first few minutes first flight Confidence first thing required comfortable flyingand airplane confidence builder Construction wing uses same airfoil method construction original tip-dihedraled wing addition ailerons hardware about different lets start point two panels complete readr joined plywood di hedral braces Notice two center ribsone panelare cut half main spar two nose ribs joined back half ribs form sides well will hold aileron servo front well main spar back scrap V16 sheet balsa trimmed fit between ribs Join wing panels dihedral braces before adding center ribs front bottom spar top trailing edge sheet center section sheeted just original wing top servo well left open Add -in sheet tips before ailerons Y16 x -in stock tapered A6 trailing edge Stock can purchased sanded shape Glue 2-in pieces aileron stock trailing edge betweenthe lasttwo ribs Sandtoblendinto tips aileron torque rods made slipping brass tube over 3/az music wire bending wire shape shown Note left right Mark location torque rod arms trailing edge relieve trailing edge locations piece rolled-up sandpaper give arms free movement Glue brass tubing place trailing edge careful get glue tubes check proper locationthat left left side etc Hold ailerons against torque rods drill leading edges match barbs end rods Slightly hollow out leading edges holes inboard allow torque rods seat thus close gap between ailerons wing After ailerons wing covered mount ailerons using epoxy secure torque rods Mount servo plywood tray glued scrap balsa risers both ends servo well Standard aileron hardware used connect aileron horns servo Plug servo receiver check proper movement Carefully sight along wing warps correct might have crept during covering wing should fit perfectly saddle fuselage trim trailing edge saddie until does Good flying Radio Technique/Myers Continued page 39 Another subject AMA has continuing effort collect type acceptance data FCC soon piece equipment qualifies hasnt roaring success have some old type acceptances Ace RIG Inc Silver Seven data newer 1980 far know idea information will stored AMA HQ made available Contest Directors others purpose identi fring narrow-band transmitter designs people doing contest-entrant transmitter proc essing will print information soon get ff1 get George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 responding advertisers mention read about Model Avi ation 144 Model Aviation
Edition: Model Aviation - 1987/06
Page Numbers: 28, 29, 30, 31, 32, 33, 34, 144
NO OCR TEXT NO OCR TEXT tion flat bench elevate out board ends two tip sections 6 match angled ribs Using sharp razor slice 1/16 joined ribs side main spars fit plywood dihedral braces Install braces check fit glue joints everything dry install bottom front spar leading edge tips glued two tip ribs Notice slant upwards become flush top top spar stubs Use scrap spar material fill between bottom main spars tips Sheet center section between spars sand completed wing stab rudder built right over plan just wing two 2 plywood spar doublers should elimi nated add much strength area plan shows 3/16-sq hardwood elevator carry-through /16 dowel will work well complete join mating surfaces sand outlines match Fuselage fuselage sides cut medium 8-lb /32 balsa sheet Dont cut wing saddle sides until after doublers glued place doublers also 3/n balsathis time hard-stock laid 450 angle grain sides doublers cemented place pin two sides together sand same outline sanding block 100-grit sandpaper still pinned together cut wing saddle drill -in holes wing-mounting dowels Separate sides add 3A2-sq longerons uprights well servoand tank-mounting rails Cut out drill firewall two cabin formers epoxy T nuts back side Left using stiller-type tall wheel steering load rudder hinges greatly reduced ground handling smoother responsive Right torsion bar landing gear easy install absorbs slot pain incurred hard landings Use type landing gear necessary simpilfy wing changes switching three-channel trainer four-channel aerobatics trainer 30 Model Aviation Muffler pressure easyto come helps maintain constantfuel flowto engine throttle control linkage has U-shaped bend just below exhaust stack acts adjustment provides strain relief servo should something bind Left Sherl Smothers cranks up Double Duty Leslie Lunch holds Model lean excellentthree-channeitrainer asthesewomen will attest Above generous tip-dihedraled wing gives Double Duty flying sense Its own abliltyto recoverfrom worst attItudes given time can save new flier 7--z 7-N PL N1 77 7N K 7 7I 1015K Z CrCL NGI N N1 -777--7 - BALSF 3HTU L TUB 0 DIR TPILV4HiL -7--- SQ L0NGR0N5 m AL5R DOUBI~R $HET TOP& BOTTOM BRLSA R~S BALSA SPAR 16 8 roP&BOTTOII N K-K Kr 96 4 7-7- -777 7 7 7p x3 *DIR flJ5IC WIR 3 / Left Trim 1/16 both top bottom two center ribs allow center-section sheeting Adding webbing during Initial assembly helps keep ribs vertical Right tip bows slant up blend airfoil Trim top spars butt against flat side bows bottom spars cut flush tip rib scrap 3/16 balsa used fill between tip Left The bottom fuselage flat both fuselage sides joined bottom bottom isqulte easyto assemblethe uprights keep both sides same Use medium 3/32 balsa forthe longerons uprights Right simple boxfuselage uses onlythe firewall two formers join sides throttle line Ny-Rod guides should installed atthls point construction Drill firewall before joining Left A 18-In plywood tail wheel pad cut out mounted after fuselage top bottom have sheeted pad allows free movement thetillerwithout modifying thetali wheel mount Right Gussets odd angles can cut holding stock overthe desired location marking outline gusset razor knife grain gusset should always run 45 angie joint itself firewall mounting bolts start assembling fuselage gluing two cabin formers place sides Make sure perpendicular side checking right triangle dry glue other fuselage side formers being sure perfect alignment first Bring tail together glue dry mount firewall prefer use epoxy hold firewall place Sheet bottom fuselage back wing saddle tail 6 balsa grain running across fuselage very tail balsa replaced V16 plywood tail wheel mount Build up glue landing gear mount place just front first cabin former Install Nyrod guides cabin area tail Drill Nyrod supports trim fit between fuselage sides Slip over Nyrods epoxy place Epoxy -in copper-tube fuel overflow lines well throttle line through firewall install floor tank compartment Wedge tank place foam connect copper tubes fuel tubing Watch eliminate kinks lines Finish cross-grain sheeting sand completed fuselage original covered Mono Kote material suggested 32 Model Aviation Full-Size Plans Available. See Page 188 316% SIr BALSASILtEDL3M PlY DOUBLER STA ILIZEN TYPICALS/15 510 TINGEBALSA FRMBE 016 BALSA WING WEB BOTTERN _BAF 110 BALjB0J 3/BWONLF ELEVATOR 3/IN DOEDT/10 DODD DORN BALSABOTTOM I/IS PLY V0 PLY DIHEDRAL BRACES BASIC TRAINER D/B NUOT RUD RODSV 1 WIREa TELSTAB TARESCREATION ROtORPASOEDIT WASIORC1NREISE TOILMOBAL110 PLYWOOD LA MOSINT DETAIL I/O PLYWOOD DIHEDRAL BRACESWING TIP DETAIL ADVANCED TRAINERDOT TO STOLE LS REDO DOLO 5/30 BALSO SIDESOROD 110 MA DOLES LANGEAR PATTERN TRIM PIN POD COSTED W RB RIB BOTTERN I/B BALSA NREET /7 I/IFSFL BALSAS/TO 60FUSELAGETOP VIEWL~\IYS BW ARSOEDOSSI/N PLY TRAYLANDING II\TO FIT FIN SAN DO 3/16 NALNAS/SO BALOM SLEETOOJSLER TO PIDEWOLLCARDED NYROD SATFUSELAGE ODORTODOSTLE LPSE NABEDEAR-SOFT ORE PUWIRODID TO IS EBSINE 3/TA SA WALSA.---PIT TO SAIDB-I PREP RECEIVER/ LARSUDROSSTONEA RALSA/3/TO RALSA STEED ISSIOEDOISY 00 S/IN BALSATAE BALSA ASSETS/TTERTSM 7 MCEST VIEWSASO510CSTATO%SRGREET DF S DO WAIBfI ~BLE DUTY OUTLINE FARTBASIC WIRE _TRAYRAILS/ RIBSDESISIED BY F RANDOLPH O 10 DIATRACING BY OE DEMARCO ________________________WREELS .aa Wt 0IA 3 43 0 3/TA NA BALSA FUSELAGE SIDE SPECIFICATIONS *160 SF60NT-lAO MODEL AVIATION /7 7 BALSA AG OS E T S r S -TANSA BALSAL POSNAPASFADS TOP 0100 PATTON RIGHT PANEL 3/B BALSA MAPS STUBS DDE AND BOTTOM 116 BALSA DENS . AERTISAL ORAlS PLY DIOEADAL MACES \ / lAIr BALGO1 SPEED TEI 3/SO Cod BDJSICAL I/B B00551 DALSO OUSOEDS TYPICAL DINGE LOCATION LEFT V ANEL I/IN BALSA RIDS Ir 3/A RALSA AILSOUS STOCK I/4DO MALSA. LEARPG EDAD lAD BALSA CENTER SECTION SOEEDIDO DDE N BOTTOM NALO BOOIll \OLERON III TON SERYOI WING PLAN ADVANCED TRAINER new modeling oldtimer good alternative would Micafilm very light strong covering Whatever choose follow lli AM PLY IB 3/IN60 TOP NBOTfl RIGHT PANEL 110 BALSA /660165/5 BALSA TE BALSAN PATTON BALSA SENSED ILIJ 116 BALSA11/0 SA lAG RIDS I WARS TOP 1 3/N%3/D NALNA SOtSaREA ASSLE LEFT PANEB BOSTON TOP B SODSAGEj MB BALSA 10 BALSA OITEOtL IN AIr BALSA CENTER TOP S NOTTOU\ -fr AR 60 BALSA E zvIi- -i IF -s 116 PLD _ ISIJ/0L BALSA IIDEPAAERY CENTI R SEC TIONGRAIN 1 ADEO ADOAR,ALONT END AAOEII NIB TO ThIS 1---ARSLI II /AI LYE 310 BALSAlAD DIA I/IS SAT E TOP N BOTTOMWANIC WIRE TRIM I/O TOP N SHEET 2 OF DOUBLE DUTY Trim covering away center stab covered fuselage epoxy slot proJune1987 33 0PA1 AMBIfl WINflINAINELK manufacturers instructions application rudder elevator hinges original made MonoKote hinge surfaces way familiar vided Epoxy tin rudder fuselage same way Trim covering away epoxy -in wing-mounting dowels place Cut out -in plywood tail wheel bracket pad epoxy thelocation shown mount tail wheel epoxy small wood screws Bend U-shaped tiller-holder slip piece fuel tube over tiller before capturing holder attaching rudder Before bolting engine mount firewall good idea paint firewall coat epoxy engine mounted attach fuel line carb overflow line muffler pressure tap Run piece soft iron wire through throttle Nyrod connect throttle arm U-shaped bend wire arm acts adjustment well providing strain relief servo Bend up landing gear legs Add wheels hold place gear mount metal brackets small wood screws Before installing radio assemble airplane check balance point Move battery pack servos around until balances indicated plans install radio maintain balance Connect elevator rudder servos Nyrods devises horns Make Z-bend throttle wire engage servo Check see thing reacts properly transmitter controls After range check airplane ready fly Flying Some taxi time order before first flight get feel airplane steers same ground air Hold stick well back taxiing will find ground handling gentle takeoff roll straight true first flight hold ground little forward stick until tail well up rotate airplane size such small engine climb-out exceptional balance shown plans no warps level flight should well within trim range transmitter rudder-type airplanes ex hibit some tail wag turn initiated will find tendency minimum machine Level flight can maintained throttle two notches above idle Landings almost automatic Set up approach back off throttle enjoy graceful sight comes land little flare tail wheel lands first airplane down bounce simple-to-fly configuration lets teach friends wife children fly still enjoy flying yourselfall very small investment time money fuel should have long happy life has Ailerons addition wing equipped ailerons simple inexpensive Continued page 144 34Model Aviation Thu center section aileroned wing treated differently tip-dihedraled wing well aileron servo formed separating trailing edges center ribs Because smaller size lift up center ribs proper position 1/16 shims aileron hardware simple 1/8-in brass tubing 3/32 music wire horns Slip tube wire before bending area between horns filled scrap wood Flying slow stable Double Dutygives new pilottimetothinkthrough decisions later become instinctive reflexes develop switch alleroned wing THE LEADER IN COMPETITION PROPELLERS NEW 4 CYCLE ES 100 THP DESIGN ORED HELICAL PITCH DEVELOPEDTO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALITHE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW DIAPITCH THP 1286778 136778 148778 1567 16678 NEW ii PRICE 299 379 479 689 989 PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10T020/oINCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534149 634149 72833456179 8334568189 845667199 9458677199 1045667209 106W8W209 106EW219 114677778229 115W229 116EW239 1167239 124W279 125W279 1256279 P1356349 1456459 1556859 164N969 16678989 j RC PYLON RACING SERIES 500 DIAPITCHPRICE 7SN 5N279 86778299 SERIES 400C 866777/289 9777289 W WIDE BLADE EW EXTRA WIDE IU NAARAW 1987 Cobra 400 Twin Complete WItfl Hub 4Spring Starter CID Gas & Oilngine $25000 ial Mount$2000yiition Unit$8995Limited Price Exh Stacks$1495Spark Adv$6995 Visa Master Card COD Add 5% Send $200 Catalog Homer Sales Inc 300 Dixie Hwy Beecher IL 60401 F1hone 312 946-2515 Double Duty/Randolph Continued page 34 method turning DoubleDuty good gentle advanced trainer Most flight characteristics remain same slightly smaller wing stability almost like Free Flight model somewhat reduced use less dihedral aileron-equipped wing Roll response very smooth would expected course elevator throttle responses remain same Transition three-channel sys tem full-house arrangement really easy sweaty hands time reduced first few minutes first flight Confidence first thing required comfortable flyingand airplane confidence builder Construction wing uses same airfoil method construction original tip-dihedraled wing addition ailerons hardware about different lets start point two panels complete readr joined plywood di hedral braces Notice two center ribsone panelare cut half main spar two nose ribs joined back half ribs form sides well will hold aileron servo front well main spar back scrap V16 sheet balsa trimmed fit between ribs Join wing panels dihedral braces before adding center ribs front bottom spar top trailing edge sheet center section sheeted just original wing top servo well left open Add -in sheet tips before ailerons Y16 x -in stock tapered A6 trailing edge Stock can purchased sanded shape Glue 2-in pieces aileron stock trailing edge betweenthe lasttwo ribs Sandtoblendinto tips aileron torque rods made slipping brass tube over 3/az music wire bending wire shape shown Note left right Mark location torque rod arms trailing edge relieve trailing edge locations piece rolled-up sandpaper give arms free movement Glue brass tubing place trailing edge careful get glue tubes check proper locationthat left left side etc Hold ailerons against torque rods drill leading edges match barbs end rods Slightly hollow out leading edges holes inboard allow torque rods seat thus close gap between ailerons wing After ailerons wing covered mount ailerons using epoxy secure torque rods Mount servo plywood tray glued scrap balsa risers both ends servo well Standard aileron hardware used connect aileron horns servo Plug servo receiver check proper movement Carefully sight along wing warps correct might have crept during covering wing should fit perfectly saddle fuselage trim trailing edge saddie until does Good flying Radio Technique/Myers Continued page 39 Another subject AMA has continuing effort collect type acceptance data FCC soon piece equipment qualifies hasnt roaring success have some old type acceptances Ace RIG Inc Silver Seven data newer 1980 far know idea information will stored AMA HQ made available Contest Directors others purpose identi fring narrow-band transmitter designs people doing contest-entrant transmitter proc essing will print information soon get ff1 get George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 responding advertisers mention read about Model Avi ation 144 Model Aviation
Edition: Model Aviation - 1987/06
Page Numbers: 28, 29, 30, 31, 32, 33, 34, 144
NO OCR TEXT NO OCR TEXT tion flat bench elevate out board ends two tip sections 6 match angled ribs Using sharp razor slice 1/16 joined ribs side main spars fit plywood dihedral braces Install braces check fit glue joints everything dry install bottom front spar leading edge tips glued two tip ribs Notice slant upwards become flush top top spar stubs Use scrap spar material fill between bottom main spars tips Sheet center section between spars sand completed wing stab rudder built right over plan just wing two 2 plywood spar doublers should elimi nated add much strength area plan shows 3/16-sq hardwood elevator carry-through /16 dowel will work well complete join mating surfaces sand outlines match Fuselage fuselage sides cut medium 8-lb /32 balsa sheet Dont cut wing saddle sides until after doublers glued place doublers also 3/n balsathis time hard-stock laid 450 angle grain sides doublers cemented place pin two sides together sand same outline sanding block 100-grit sandpaper still pinned together cut wing saddle drill -in holes wing-mounting dowels Separate sides add 3A2-sq longerons uprights well servoand tank-mounting rails Cut out drill firewall two cabin formers epoxy T nuts back side Left using stiller-type tall wheel steering load rudder hinges greatly reduced ground handling smoother responsive Right torsion bar landing gear easy install absorbs slot pain incurred hard landings Use type landing gear necessary simpilfy wing changes switching three-channel trainer four-channel aerobatics trainer 30 Model Aviation Muffler pressure easyto come helps maintain constantfuel flowto engine throttle control linkage has U-shaped bend just below exhaust stack acts adjustment provides strain relief servo should something bind Left Sherl Smothers cranks up Double Duty Leslie Lunch holds Model lean excellentthree-channeitrainer asthesewomen will attest Above generous tip-dihedraled wing gives Double Duty flying sense Its own abliltyto recoverfrom worst attItudes given time can save new flier 7--z 7-N PL N1 77 7N K 7 7I 1015K Z CrCL NGI N N1 -777--7 - BALSF 3HTU L TUB 0 DIR TPILV4HiL -7--- SQ L0NGR0N5 m AL5R DOUBI~R $HET TOP& BOTTOM BRLSA R~S BALSA SPAR 16 8 roP&BOTTOII N K-K Kr 96 4 7-7- -777 7 7 7p x3 *DIR flJ5IC WIR 3 / Left Trim 1/16 both top bottom two center ribs allow center-section sheeting Adding webbing during Initial assembly helps keep ribs vertical Right tip bows slant up blend airfoil Trim top spars butt against flat side bows bottom spars cut flush tip rib scrap 3/16 balsa used fill between tip Left The bottom fuselage flat both fuselage sides joined bottom bottom isqulte easyto assemblethe uprights keep both sides same Use medium 3/32 balsa forthe longerons uprights Right simple boxfuselage uses onlythe firewall two formers join sides throttle line Ny-Rod guides should installed atthls point construction Drill firewall before joining Left A 18-In plywood tail wheel pad cut out mounted after fuselage top bottom have sheeted pad allows free movement thetillerwithout modifying thetali wheel mount Right Gussets odd angles can cut holding stock overthe desired location marking outline gusset razor knife grain gusset should always run 45 angie joint itself firewall mounting bolts start assembling fuselage gluing two cabin formers place sides Make sure perpendicular side checking right triangle dry glue other fuselage side formers being sure perfect alignment first Bring tail together glue dry mount firewall prefer use epoxy hold firewall place Sheet bottom fuselage back wing saddle tail 6 balsa grain running across fuselage very tail balsa replaced V16 plywood tail wheel mount Build up glue landing gear mount place just front first cabin former Install Nyrod guides cabin area tail Drill Nyrod supports trim fit between fuselage sides Slip over Nyrods epoxy place Epoxy -in copper-tube fuel overflow lines well throttle line through firewall install floor tank compartment Wedge tank place foam connect copper tubes fuel tubing Watch eliminate kinks lines Finish cross-grain sheeting sand completed fuselage original covered Mono Kote material suggested 32 Model Aviation Full-Size Plans Available. See Page 188 316% SIr BALSASILtEDL3M PlY DOUBLER STA ILIZEN TYPICALS/15 510 TINGEBALSA FRMBE 016 BALSA WING WEB BOTTERN _BAF 110 BALjB0J 3/BWONLF ELEVATOR 3/IN DOEDT/10 DODD DORN BALSABOTTOM I/IS PLY V0 PLY DIHEDRAL BRACES BASIC TRAINER D/B NUOT RUD RODSV 1 WIREa TELSTAB TARESCREATION ROtORPASOEDIT WASIORC1NREISE TOILMOBAL110 PLYWOOD LA MOSINT DETAIL I/O PLYWOOD DIHEDRAL BRACESWING TIP DETAIL ADVANCED TRAINERDOT TO STOLE LS REDO DOLO 5/30 BALSO SIDESOROD 110 MA DOLES LANGEAR PATTERN TRIM PIN POD COSTED W RB RIB BOTTERN I/B BALSA NREET /7 I/IFSFL BALSAS/TO 60FUSELAGETOP VIEWL~\IYS BW ARSOEDOSSI/N PLY TRAYLANDING II\TO FIT FIN SAN DO 3/16 NALNAS/SO BALOM SLEETOOJSLER TO PIDEWOLLCARDED NYROD SATFUSELAGE ODORTODOSTLE LPSE NABEDEAR-SOFT ORE PUWIRODID TO IS EBSINE 3/TA SA WALSA.---PIT TO SAIDB-I PREP RECEIVER/ LARSUDROSSTONEA RALSA/3/TO RALSA STEED ISSIOEDOISY 00 S/IN BALSATAE BALSA ASSETS/TTERTSM 7 MCEST VIEWSASO510CSTATO%SRGREET DF S DO WAIBfI ~BLE DUTY OUTLINE FARTBASIC WIRE _TRAYRAILS/ RIBSDESISIED BY F RANDOLPH O 10 DIATRACING BY OE DEMARCO ________________________WREELS .aa Wt 0IA 3 43 0 3/TA NA BALSA FUSELAGE SIDE SPECIFICATIONS *160 SF60NT-lAO MODEL AVIATION /7 7 BALSA AG OS E T S r S -TANSA BALSAL POSNAPASFADS TOP 0100 PATTON RIGHT PANEL 3/B BALSA MAPS STUBS DDE AND BOTTOM 116 BALSA DENS . AERTISAL ORAlS PLY DIOEADAL MACES \ / lAIr BALGO1 SPEED TEI 3/SO Cod BDJSICAL I/B B00551 DALSO OUSOEDS TYPICAL DINGE LOCATION LEFT V ANEL I/IN BALSA RIDS Ir 3/A RALSA AILSOUS STOCK I/4DO MALSA. LEARPG EDAD lAD BALSA CENTER SECTION SOEEDIDO DDE N BOTTOM NALO BOOIll \OLERON III TON SERYOI WING PLAN ADVANCED TRAINER new modeling oldtimer good alternative would Micafilm very light strong covering Whatever choose follow lli AM PLY IB 3/IN60 TOP NBOTfl RIGHT PANEL 110 BALSA /660165/5 BALSA TE BALSAN PATTON BALSA SENSED ILIJ 116 BALSA11/0 SA lAG RIDS I WARS TOP 1 3/N%3/D NALNA SOtSaREA ASSLE LEFT PANEB BOSTON TOP B SODSAGEj MB BALSA 10 BALSA OITEOtL IN AIr BALSA CENTER TOP S NOTTOU\ -fr AR 60 BALSA E zvIi- -i IF -s 116 PLD _ ISIJ/0L BALSA IIDEPAAERY CENTI R SEC TIONGRAIN 1 ADEO ADOAR,ALONT END AAOEII NIB TO ThIS 1---ARSLI II /AI LYE 310 BALSAlAD DIA I/IS SAT E TOP N BOTTOMWANIC WIRE TRIM I/O TOP N SHEET 2 OF DOUBLE DUTY Trim covering away center stab covered fuselage epoxy slot proJune1987 33 0PA1 AMBIfl WINflINAINELK manufacturers instructions application rudder elevator hinges original made MonoKote hinge surfaces way familiar vided Epoxy tin rudder fuselage same way Trim covering away epoxy -in wing-mounting dowels place Cut out -in plywood tail wheel bracket pad epoxy thelocation shown mount tail wheel epoxy small wood screws Bend U-shaped tiller-holder slip piece fuel tube over tiller before capturing holder attaching rudder Before bolting engine mount firewall good idea paint firewall coat epoxy engine mounted attach fuel line carb overflow line muffler pressure tap Run piece soft iron wire through throttle Nyrod connect throttle arm U-shaped bend wire arm acts adjustment well providing strain relief servo Bend up landing gear legs Add wheels hold place gear mount metal brackets small wood screws Before installing radio assemble airplane check balance point Move battery pack servos around until balances indicated plans install radio maintain balance Connect elevator rudder servos Nyrods devises horns Make Z-bend throttle wire engage servo Check see thing reacts properly transmitter controls After range check airplane ready fly Flying Some taxi time order before first flight get feel airplane steers same ground air Hold stick well back taxiing will find ground handling gentle takeoff roll straight true first flight hold ground little forward stick until tail well up rotate airplane size such small engine climb-out exceptional balance shown plans no warps level flight should well within trim range transmitter rudder-type airplanes ex hibit some tail wag turn initiated will find tendency minimum machine Level flight can maintained throttle two notches above idle Landings almost automatic Set up approach back off throttle enjoy graceful sight comes land little flare tail wheel lands first airplane down bounce simple-to-fly configuration lets teach friends wife children fly still enjoy flying yourselfall very small investment time money fuel should have long happy life has Ailerons addition wing equipped ailerons simple inexpensive Continued page 144 34Model Aviation Thu center section aileroned wing treated differently tip-dihedraled wing well aileron servo formed separating trailing edges center ribs Because smaller size lift up center ribs proper position 1/16 shims aileron hardware simple 1/8-in brass tubing 3/32 music wire horns Slip tube wire before bending area between horns filled scrap wood Flying slow stable Double Dutygives new pilottimetothinkthrough decisions later become instinctive reflexes develop switch alleroned wing THE LEADER IN COMPETITION PROPELLERS NEW 4 CYCLE ES 100 THP DESIGN ORED HELICAL PITCH DEVELOPEDTO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALITHE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW DIAPITCH THP 1286778 136778 148778 1567 16678 NEW ii PRICE 299 379 479 689 989 PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10T020/oINCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534149 634149 72833456179 8334568189 845667199 9458677199 1045667209 106W8W209 106EW219 114677778229 115W229 116EW239 1167239 124W279 125W279 1256279 P1356349 1456459 1556859 164N969 16678989 j RC PYLON RACING SERIES 500 DIAPITCHPRICE 7SN 5N279 86778299 SERIES 400C 866777/289 9777289 W WIDE BLADE EW EXTRA WIDE IU NAARAW 1987 Cobra 400 Twin Complete WItfl Hub 4Spring Starter CID Gas & Oilngine $25000 ial Mount$2000yiition Unit$8995Limited Price Exh Stacks$1495Spark Adv$6995 Visa Master Card COD Add 5% Send $200 Catalog Homer Sales Inc 300 Dixie Hwy Beecher IL 60401 F1hone 312 946-2515 Double Duty/Randolph Continued page 34 method turning DoubleDuty good gentle advanced trainer Most flight characteristics remain same slightly smaller wing stability almost like Free Flight model somewhat reduced use less dihedral aileron-equipped wing Roll response very smooth would expected course elevator throttle responses remain same Transition three-channel sys tem full-house arrangement really easy sweaty hands time reduced first few minutes first flight Confidence first thing required comfortable flyingand airplane confidence builder Construction wing uses same airfoil method construction original tip-dihedraled wing addition ailerons hardware about different lets start point two panels complete readr joined plywood di hedral braces Notice two center ribsone panelare cut half main spar two nose ribs joined back half ribs form sides well will hold aileron servo front well main spar back scrap V16 sheet balsa trimmed fit between ribs Join wing panels dihedral braces before adding center ribs front bottom spar top trailing edge sheet center section sheeted just original wing top servo well left open Add -in sheet tips before ailerons Y16 x -in stock tapered A6 trailing edge Stock can purchased sanded shape Glue 2-in pieces aileron stock trailing edge betweenthe lasttwo ribs Sandtoblendinto tips aileron torque rods made slipping brass tube over 3/az music wire bending wire shape shown Note left right Mark location torque rod arms trailing edge relieve trailing edge locations piece rolled-up sandpaper give arms free movement Glue brass tubing place trailing edge careful get glue tubes check proper locationthat left left side etc Hold ailerons against torque rods drill leading edges match barbs end rods Slightly hollow out leading edges holes inboard allow torque rods seat thus close gap between ailerons wing After ailerons wing covered mount ailerons using epoxy secure torque rods Mount servo plywood tray glued scrap balsa risers both ends servo well Standard aileron hardware used connect aileron horns servo Plug servo receiver check proper movement Carefully sight along wing warps correct might have crept during covering wing should fit perfectly saddle fuselage trim trailing edge saddie until does Good flying Radio Technique/Myers Continued page 39 Another subject AMA has continuing effort collect type acceptance data FCC soon piece equipment qualifies hasnt roaring success have some old type acceptances Ace RIG Inc Silver Seven data newer 1980 far know idea information will stored AMA HQ made available Contest Directors others purpose identi fring narrow-band transmitter designs people doing contest-entrant transmitter proc essing will print information soon get ff1 get George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 responding advertisers mention read about Model Avi ation 144 Model Aviation
Edition: Model Aviation - 1987/06
Page Numbers: 28, 29, 30, 31, 32, 33, 34, 144
NO OCR TEXT NO OCR TEXT tion flat bench elevate out board ends two tip sections 6 match angled ribs Using sharp razor slice 1/16 joined ribs side main spars fit plywood dihedral braces Install braces check fit glue joints everything dry install bottom front spar leading edge tips glued two tip ribs Notice slant upwards become flush top top spar stubs Use scrap spar material fill between bottom main spars tips Sheet center section between spars sand completed wing stab rudder built right over plan just wing two 2 plywood spar doublers should elimi nated add much strength area plan shows 3/16-sq hardwood elevator carry-through /16 dowel will work well complete join mating surfaces sand outlines match Fuselage fuselage sides cut medium 8-lb /32 balsa sheet Dont cut wing saddle sides until after doublers glued place doublers also 3/n balsathis time hard-stock laid 450 angle grain sides doublers cemented place pin two sides together sand same outline sanding block 100-grit sandpaper still pinned together cut wing saddle drill -in holes wing-mounting dowels Separate sides add 3A2-sq longerons uprights well servoand tank-mounting rails Cut out drill firewall two cabin formers epoxy T nuts back side Left using stiller-type tall wheel steering load rudder hinges greatly reduced ground handling smoother responsive Right torsion bar landing gear easy install absorbs slot pain incurred hard landings Use type landing gear necessary simpilfy wing changes switching three-channel trainer four-channel aerobatics trainer 30 Model Aviation Muffler pressure easyto come helps maintain constantfuel flowto engine throttle control linkage has U-shaped bend just below exhaust stack acts adjustment provides strain relief servo should something bind Left Sherl Smothers cranks up Double Duty Leslie Lunch holds Model lean excellentthree-channeitrainer asthesewomen will attest Above generous tip-dihedraled wing gives Double Duty flying sense Its own abliltyto recoverfrom worst attItudes given time can save new flier 7--z 7-N PL N1 77 7N K 7 7I 1015K Z CrCL NGI N N1 -777--7 - BALSF 3HTU L TUB 0 DIR TPILV4HiL -7--- SQ L0NGR0N5 m AL5R DOUBI~R $HET TOP& BOTTOM BRLSA R~S BALSA SPAR 16 8 roP&BOTTOII N K-K Kr 96 4 7-7- -777 7 7 7p x3 *DIR flJ5IC WIR 3 / Left Trim 1/16 both top bottom two center ribs allow center-section sheeting Adding webbing during Initial assembly helps keep ribs vertical Right tip bows slant up blend airfoil Trim top spars butt against flat side bows bottom spars cut flush tip rib scrap 3/16 balsa used fill between tip Left The bottom fuselage flat both fuselage sides joined bottom bottom isqulte easyto assemblethe uprights keep both sides same Use medium 3/32 balsa forthe longerons uprights Right simple boxfuselage uses onlythe firewall two formers join sides throttle line Ny-Rod guides should installed atthls point construction Drill firewall before joining Left A 18-In plywood tail wheel pad cut out mounted after fuselage top bottom have sheeted pad allows free movement thetillerwithout modifying thetali wheel mount Right Gussets odd angles can cut holding stock overthe desired location marking outline gusset razor knife grain gusset should always run 45 angie joint itself firewall mounting bolts start assembling fuselage gluing two cabin formers place sides Make sure perpendicular side checking right triangle dry glue other fuselage side formers being sure perfect alignment first Bring tail together glue dry mount firewall prefer use epoxy hold firewall place Sheet bottom fuselage back wing saddle tail 6 balsa grain running across fuselage very tail balsa replaced V16 plywood tail wheel mount Build up glue landing gear mount place just front first cabin former Install Nyrod guides cabin area tail Drill Nyrod supports trim fit between fuselage sides Slip over Nyrods epoxy place Epoxy -in copper-tube fuel overflow lines well throttle line through firewall install floor tank compartment Wedge tank place foam connect copper tubes fuel tubing Watch eliminate kinks lines Finish cross-grain sheeting sand completed fuselage original covered Mono Kote material suggested 32 Model Aviation Full-Size Plans Available. See Page 188 316% SIr BALSASILtEDL3M PlY DOUBLER STA ILIZEN TYPICALS/15 510 TINGEBALSA FRMBE 016 BALSA WING WEB BOTTERN _BAF 110 BALjB0J 3/BWONLF ELEVATOR 3/IN DOEDT/10 DODD DORN BALSABOTTOM I/IS PLY V0 PLY DIHEDRAL BRACES BASIC TRAINER D/B NUOT RUD RODSV 1 WIREa TELSTAB TARESCREATION ROtORPASOEDIT WASIORC1NREISE TOILMOBAL110 PLYWOOD LA MOSINT DETAIL I/O PLYWOOD DIHEDRAL BRACESWING TIP DETAIL ADVANCED TRAINERDOT TO STOLE LS REDO DOLO 5/30 BALSO SIDESOROD 110 MA DOLES LANGEAR PATTERN TRIM PIN POD COSTED W RB RIB BOTTERN I/B BALSA NREET /7 I/IFSFL BALSAS/TO 60FUSELAGETOP VIEWL~\IYS BW ARSOEDOSSI/N PLY TRAYLANDING II\TO FIT FIN SAN DO 3/16 NALNAS/SO BALOM SLEETOOJSLER TO PIDEWOLLCARDED NYROD SATFUSELAGE ODORTODOSTLE LPSE NABEDEAR-SOFT ORE PUWIRODID TO IS EBSINE 3/TA SA WALSA.---PIT TO SAIDB-I PREP RECEIVER/ LARSUDROSSTONEA RALSA/3/TO RALSA STEED ISSIOEDOISY 00 S/IN BALSATAE BALSA ASSETS/TTERTSM 7 MCEST VIEWSASO510CSTATO%SRGREET DF S DO WAIBfI ~BLE DUTY OUTLINE FARTBASIC WIRE _TRAYRAILS/ RIBSDESISIED BY F RANDOLPH O 10 DIATRACING BY OE DEMARCO ________________________WREELS .aa Wt 0IA 3 43 0 3/TA NA BALSA FUSELAGE SIDE SPECIFICATIONS *160 SF60NT-lAO MODEL AVIATION /7 7 BALSA AG OS E T S r S -TANSA BALSAL POSNAPASFADS TOP 0100 PATTON RIGHT PANEL 3/B BALSA MAPS STUBS DDE AND BOTTOM 116 BALSA DENS . AERTISAL ORAlS PLY DIOEADAL MACES \ / lAIr BALGO1 SPEED TEI 3/SO Cod BDJSICAL I/B B00551 DALSO OUSOEDS TYPICAL DINGE LOCATION LEFT V ANEL I/IN BALSA RIDS Ir 3/A RALSA AILSOUS STOCK I/4DO MALSA. LEARPG EDAD lAD BALSA CENTER SECTION SOEEDIDO DDE N BOTTOM NALO BOOIll \OLERON III TON SERYOI WING PLAN ADVANCED TRAINER new modeling oldtimer good alternative would Micafilm very light strong covering Whatever choose follow lli AM PLY IB 3/IN60 TOP NBOTfl RIGHT PANEL 110 BALSA /660165/5 BALSA TE BALSAN PATTON BALSA SENSED ILIJ 116 BALSA11/0 SA lAG RIDS I WARS TOP 1 3/N%3/D NALNA SOtSaREA ASSLE LEFT PANEB BOSTON TOP B SODSAGEj MB BALSA 10 BALSA OITEOtL IN AIr BALSA CENTER TOP S NOTTOU\ -fr AR 60 BALSA E zvIi- -i IF -s 116 PLD _ ISIJ/0L BALSA IIDEPAAERY CENTI R SEC TIONGRAIN 1 ADEO ADOAR,ALONT END AAOEII NIB TO ThIS 1---ARSLI II /AI LYE 310 BALSAlAD DIA I/IS SAT E TOP N BOTTOMWANIC WIRE TRIM I/O TOP N SHEET 2 OF DOUBLE DUTY Trim covering away center stab covered fuselage epoxy slot proJune1987 33 0PA1 AMBIfl WINflINAINELK manufacturers instructions application rudder elevator hinges original made MonoKote hinge surfaces way familiar vided Epoxy tin rudder fuselage same way Trim covering away epoxy -in wing-mounting dowels place Cut out -in plywood tail wheel bracket pad epoxy thelocation shown mount tail wheel epoxy small wood screws Bend U-shaped tiller-holder slip piece fuel tube over tiller before capturing holder attaching rudder Before bolting engine mount firewall good idea paint firewall coat epoxy engine mounted attach fuel line carb overflow line muffler pressure tap Run piece soft iron wire through throttle Nyrod connect throttle arm U-shaped bend wire arm acts adjustment well providing strain relief servo Bend up landing gear legs Add wheels hold place gear mount metal brackets small wood screws Before installing radio assemble airplane check balance point Move battery pack servos around until balances indicated plans install radio maintain balance Connect elevator rudder servos Nyrods devises horns Make Z-bend throttle wire engage servo Check see thing reacts properly transmitter controls After range check airplane ready fly Flying Some taxi time order before first flight get feel airplane steers same ground air Hold stick well back taxiing will find ground handling gentle takeoff roll straight true first flight hold ground little forward stick until tail well up rotate airplane size such small engine climb-out exceptional balance shown plans no warps level flight should well within trim range transmitter rudder-type airplanes ex hibit some tail wag turn initiated will find tendency minimum machine Level flight can maintained throttle two notches above idle Landings almost automatic Set up approach back off throttle enjoy graceful sight comes land little flare tail wheel lands first airplane down bounce simple-to-fly configuration lets teach friends wife children fly still enjoy flying yourselfall very small investment time money fuel should have long happy life has Ailerons addition wing equipped ailerons simple inexpensive Continued page 144 34Model Aviation Thu center section aileroned wing treated differently tip-dihedraled wing well aileron servo formed separating trailing edges center ribs Because smaller size lift up center ribs proper position 1/16 shims aileron hardware simple 1/8-in brass tubing 3/32 music wire horns Slip tube wire before bending area between horns filled scrap wood Flying slow stable Double Dutygives new pilottimetothinkthrough decisions later become instinctive reflexes develop switch alleroned wing THE LEADER IN COMPETITION PROPELLERS NEW 4 CYCLE ES 100 THP DESIGN ORED HELICAL PITCH DEVELOPEDTO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALITHE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW DIAPITCH THP 1286778 136778 148778 1567 16678 NEW ii PRICE 299 379 479 689 989 PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10T020/oINCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534149 634149 72833456179 8334568189 845667199 9458677199 1045667209 106W8W209 106EW219 114677778229 115W229 116EW239 1167239 124W279 125W279 1256279 P1356349 1456459 1556859 164N969 16678989 j RC PYLON RACING SERIES 500 DIAPITCHPRICE 7SN 5N279 86778299 SERIES 400C 866777/289 9777289 W WIDE BLADE EW EXTRA WIDE IU NAARAW 1987 Cobra 400 Twin Complete WItfl Hub 4Spring Starter CID Gas & Oilngine $25000 ial Mount$2000yiition Unit$8995Limited Price Exh Stacks$1495Spark Adv$6995 Visa Master Card COD Add 5% Send $200 Catalog Homer Sales Inc 300 Dixie Hwy Beecher IL 60401 F1hone 312 946-2515 Double Duty/Randolph Continued page 34 method turning DoubleDuty good gentle advanced trainer Most flight characteristics remain same slightly smaller wing stability almost like Free Flight model somewhat reduced use less dihedral aileron-equipped wing Roll response very smooth would expected course elevator throttle responses remain same Transition three-channel sys tem full-house arrangement really easy sweaty hands time reduced first few minutes first flight Confidence first thing required comfortable flyingand airplane confidence builder Construction wing uses same airfoil method construction original tip-dihedraled wing addition ailerons hardware about different lets start point two panels complete readr joined plywood di hedral braces Notice two center ribsone panelare cut half main spar two nose ribs joined back half ribs form sides well will hold aileron servo front well main spar back scrap V16 sheet balsa trimmed fit between ribs Join wing panels dihedral braces before adding center ribs front bottom spar top trailing edge sheet center section sheeted just original wing top servo well left open Add -in sheet tips before ailerons Y16 x -in stock tapered A6 trailing edge Stock can purchased sanded shape Glue 2-in pieces aileron stock trailing edge betweenthe lasttwo ribs Sandtoblendinto tips aileron torque rods made slipping brass tube over 3/az music wire bending wire shape shown Note left right Mark location torque rod arms trailing edge relieve trailing edge locations piece rolled-up sandpaper give arms free movement Glue brass tubing place trailing edge careful get glue tubes check proper locationthat left left side etc Hold ailerons against torque rods drill leading edges match barbs end rods Slightly hollow out leading edges holes inboard allow torque rods seat thus close gap between ailerons wing After ailerons wing covered mount ailerons using epoxy secure torque rods Mount servo plywood tray glued scrap balsa risers both ends servo well Standard aileron hardware used connect aileron horns servo Plug servo receiver check proper movement Carefully sight along wing warps correct might have crept during covering wing should fit perfectly saddle fuselage trim trailing edge saddie until does Good flying Radio Technique/Myers Continued page 39 Another subject AMA has continuing effort collect type acceptance data FCC soon piece equipment qualifies hasnt roaring success have some old type acceptances Ace RIG Inc Silver Seven data newer 1980 far know idea information will stored AMA HQ made available Contest Directors others purpose identi fring narrow-band transmitter designs people doing contest-entrant transmitter proc essing will print information soon get ff1 get George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 responding advertisers mention read about Model Avi ation 144 Model Aviation