C onE rot S _____________Be Navy Carrier Richard Perry OF ALL questions get about Carrier flying common subject concerns effects acceleration fuel original questions vary detail concern engines refuse run consistently die takeoff problem almost always can traced acceleration effects Before get started subiect would like Ted Kravers Lockheed Hercules C-i 30 built test effects flapped wing broad multi-engine slipstream Slow flight very good needs Scale points better high speed competitive sight Sound quite unique introduce new source Profile interesting tank Les Pardues profile Guardian allows outboard uniflow vent Carrier plans Dave Trible Air Mod Products interfering rear exhaust TWA engine Richard discusses effects vent placeBox 411 Raymore MO 64083 sent plans ment engine performance areat lenoth months column Profile models Douglas Devastator Japanese Val Devastator smaller model 315 square inches 44-in span Val has 390 sq 43-in span Hellcat also available have good success Midwest Carrier competition Both models have good scale outlines Plans $400 Daves models simple machines flaps other gadgets reports good low speeds instability Two unique fea tures contribute low-speed handling airfoil downthrust airfoil has very blunt leading edge produces usable lift high angles attack gentle stall characteristics Thickness varies 15% root 23-25% tips Downthrust five degrees unique Carrier Continued page 120 April1981 49 M ~ iflcations Th i mm 111111ca 1245 81 jfl-____ IlliIIIIi liii 111111 IIHIL1111111 III IIIWeight 12 Engine 91 line drixe unit 1 eperate detachahi presheeted wing panels 2 lreassemhiled fuselage frame 1 lreassemhiled stabilizer clevators vertical fin rudderU L 4 Epuxy Glass cnwl wheelpants 5 Furmed hatch clear canupy Wayne Ulerys outstanding design Leo Loudenslagers Laser 200 geared 90 offered Model Merchant nearly constructed model critical fuselage & control surfaces framing wing sheeting has done Just some finish up ready fly best available 6 Aluminum landing gear 554 E Fronton SI Brownsville TX 78520 Features * MOST STREAMLINED * COOL RUNNING * COMPUTED FOR YOUR ENGINE * NOTHING TO ADJUST * NO STRAPS NT FALL OFF * TAPPED FOR MUFFLER PRESSURE * LIGHT WEIGHT. 19 - 46 size approx 3/4 oz 50 90 size approx 1-1/2 oz * PROVEN IN NATIONAL COMPETITION LOWEST POWER LOSS PRICE $2000 POSTAGE & HANDLING 0 OHIO RESIDENTS ADOL SALES TAX 0 K & B 40 BAFFLE ADAPTERS AVAILABLE . AND STILL NO UNSIGHTLY STRAPS ONLY $200 ADDITIONAL ROBERT PAUL PREPAID CHECK OR 1462 ORCHARD GROVE MONEY ORDER TO LAKEWOOD OHIO 44107 US clear followed further wet sanding No 400 paper Nationals next day let plane sit two weeks wet-sand using No 600 paper Finally ready rubbing compound Start red compound white use Turtle Wax liquid rubbing compound plane should now ready very light coat wax wantOr use long tedious proccess neces sary top finish airplane worked Gene has worked very similar operations just about everybody wants beautiful finish Stunt plane information stunt PAMPA write Wynn Paul 1640 MaywickDit Lexington KY 40504 CL Carrier/Perry Continued page 49 models CL model Dave claims really improves low-speed handling downthrust airfoil result experiments model variable thrust line removable wings variety configura tions could tried common problem among Carrier models classes engine goes rich lean air must set too lean too rich ground get good run air probability getting good setting first time out low such model suction systems lean ground setting will often cause loss power takeoff Uniflow tank venting used Stunt models has single vent tube ending near fuel pickup tube tank supplies fuel under constant pressure pickup tube Under flight condi tions however pressure carburetor can vary considerably variation pressure thus fuel mixture caused acceleration lateral inboard/outboard positioning tank vent either atmospheric pressure crankcase pressure determines effect centrifugal acceleration fuel supply engine vent inboard carburetor centrifugal acceleration will increase fuel pressure carb speed increases vent outboard carb engine will go leaner speed increases effects reduced pressure systems just same model accelerates takeoff fuel pressure reduced greater distance end vent carb greater effect No would expect suction engine keep running peak speed ifthe fuel tank suddenly moved foot below engine effect takeoff acceleration Profile Carrier engine standard uniflow tank published details Profile Carrier fuel tanks few years ago primary feature uniflow vent location front tank have used type tank success no means adjusting vent location except putting spacers under tank accompanying drawing shows tank can fine-tuned get exactly engine response desired movable vent initially should set about 34-in inboard left side looking forward side tank use needle valve would set maximum engine rpm opened until first drop engine speed occurs setting can found consis tently avoids too-lean mixture takeoff Fly model note in-flight mixtureit will probably rich engine rich flight move vent tube out about i-in time until flight mixture optimum sure keep tank filled during process Once best setting found vent can soldered place final note pump-equipped engines subject same acceleration problems can draw fuel location output pressure constant An engine pump backplate must mounted cylinder vertical side-mounted will go rich flightperhaps too much compensated lean ground setting RichardL Perry 416 WoodhiliDrive Golds boro NC 27530 CL Speed/Hempel Continued page 51 joint Next form sheet aluminum around solid cone Start edge using fingers bend metal Work slowly dont crease metal use X-Acto hammer plastic head gently tap edge will lie flat match solid cone other edge same way Roll cone flat surface sheet metal will conform solid cone shape metal must overlap 1/16-in remain together have smooth joint Brazing cones Remove solid cone sheet aluminum cone must held horizontally joint top prevent flux running off Both hands needed brazing hold torch apply brazing rod Use pair needle-nose pliers hold cone Wrap rubberband around handles keep pliers closed Clamp pliers vise braze use flux right tube will get lot liquid few crystals crystals important part flux empty tube flux small bottle mix thoroughly brazing rod Use same rod apply flux along joint Light torch adjust center blue flame extends /4 5/16-in nozzle Apply heat along joint flux will change liquid white crusty buildup Now move heat small end cone As temperature increases flux will tum back liquid look like water Dip rod bottle flux put joint As rod starts melt move flame rod down joint dont remain spoi longer necessary Watch heat 120 Model Aviation DEALER S DISTRIRUTOR INQUIRIES INVifED 5121 541-3867
Edition: Model Aviation - 1981/04
Page Numbers: 49, 120
Edition: Model Aviation - 1981/04
Page Numbers: 49, 120
C onE rot S _____________Be Navy Carrier Richard Perry OF ALL questions get about Carrier flying common subject concerns effects acceleration fuel original questions vary detail concern engines refuse run consistently die takeoff problem almost always can traced acceleration effects Before get started subiect would like Ted Kravers Lockheed Hercules C-i 30 built test effects flapped wing broad multi-engine slipstream Slow flight very good needs Scale points better high speed competitive sight Sound quite unique introduce new source Profile interesting tank Les Pardues profile Guardian allows outboard uniflow vent Carrier plans Dave Trible Air Mod Products interfering rear exhaust TWA engine Richard discusses effects vent placeBox 411 Raymore MO 64083 sent plans ment engine performance areat lenoth months column Profile models Douglas Devastator Japanese Val Devastator smaller model 315 square inches 44-in span Val has 390 sq 43-in span Hellcat also available have good success Midwest Carrier competition Both models have good scale outlines Plans $400 Daves models simple machines flaps other gadgets reports good low speeds instability Two unique fea tures contribute low-speed handling airfoil downthrust airfoil has very blunt leading edge produces usable lift high angles attack gentle stall characteristics Thickness varies 15% root 23-25% tips Downthrust five degrees unique Carrier Continued page 120 April1981 49 M ~ iflcations Th i mm 111111ca 1245 81 jfl-____ IlliIIIIi liii 111111 IIHIL1111111 III IIIWeight 12 Engine 91 line drixe unit 1 eperate detachahi presheeted wing panels 2 lreassemhiled fuselage frame 1 lreassemhiled stabilizer clevators vertical fin rudderU L 4 Epuxy Glass cnwl wheelpants 5 Furmed hatch clear canupy Wayne Ulerys outstanding design Leo Loudenslagers Laser 200 geared 90 offered Model Merchant nearly constructed model critical fuselage & control surfaces framing wing sheeting has done Just some finish up ready fly best available 6 Aluminum landing gear 554 E Fronton SI Brownsville TX 78520 Features * MOST STREAMLINED * COOL RUNNING * COMPUTED FOR YOUR ENGINE * NOTHING TO ADJUST * NO STRAPS NT FALL OFF * TAPPED FOR MUFFLER PRESSURE * LIGHT WEIGHT. 19 - 46 size approx 3/4 oz 50 90 size approx 1-1/2 oz * PROVEN IN NATIONAL COMPETITION LOWEST POWER LOSS PRICE $2000 POSTAGE & HANDLING 0 OHIO RESIDENTS ADOL SALES TAX 0 K & B 40 BAFFLE ADAPTERS AVAILABLE . AND STILL NO UNSIGHTLY STRAPS ONLY $200 ADDITIONAL ROBERT PAUL PREPAID CHECK OR 1462 ORCHARD GROVE MONEY ORDER TO LAKEWOOD OHIO 44107 US clear followed further wet sanding No 400 paper Nationals next day let plane sit two weeks wet-sand using No 600 paper Finally ready rubbing compound Start red compound white use Turtle Wax liquid rubbing compound plane should now ready very light coat wax wantOr use long tedious proccess neces sary top finish airplane worked Gene has worked very similar operations just about everybody wants beautiful finish Stunt plane information stunt PAMPA write Wynn Paul 1640 MaywickDit Lexington KY 40504 CL Carrier/Perry Continued page 49 models CL model Dave claims really improves low-speed handling downthrust airfoil result experiments model variable thrust line removable wings variety configura tions could tried common problem among Carrier models classes engine goes rich lean air must set too lean too rich ground get good run air probability getting good setting first time out low such model suction systems lean ground setting will often cause loss power takeoff Uniflow tank venting used Stunt models has single vent tube ending near fuel pickup tube tank supplies fuel under constant pressure pickup tube Under flight condi tions however pressure carburetor can vary considerably variation pressure thus fuel mixture caused acceleration lateral inboard/outboard positioning tank vent either atmospheric pressure crankcase pressure determines effect centrifugal acceleration fuel supply engine vent inboard carburetor centrifugal acceleration will increase fuel pressure carb speed increases vent outboard carb engine will go leaner speed increases effects reduced pressure systems just same model accelerates takeoff fuel pressure reduced greater distance end vent carb greater effect No would expect suction engine keep running peak speed ifthe fuel tank suddenly moved foot below engine effect takeoff acceleration Profile Carrier engine standard uniflow tank published details Profile Carrier fuel tanks few years ago primary feature uniflow vent location front tank have used type tank success no means adjusting vent location except putting spacers under tank accompanying drawing shows tank can fine-tuned get exactly engine response desired movable vent initially should set about 34-in inboard left side looking forward side tank use needle valve would set maximum engine rpm opened until first drop engine speed occurs setting can found consis tently avoids too-lean mixture takeoff Fly model note in-flight mixtureit will probably rich engine rich flight move vent tube out about i-in time until flight mixture optimum sure keep tank filled during process Once best setting found vent can soldered place final note pump-equipped engines subject same acceleration problems can draw fuel location output pressure constant An engine pump backplate must mounted cylinder vertical side-mounted will go rich flightperhaps too much compensated lean ground setting RichardL Perry 416 WoodhiliDrive Golds boro NC 27530 CL Speed/Hempel Continued page 51 joint Next form sheet aluminum around solid cone Start edge using fingers bend metal Work slowly dont crease metal use X-Acto hammer plastic head gently tap edge will lie flat match solid cone other edge same way Roll cone flat surface sheet metal will conform solid cone shape metal must overlap 1/16-in remain together have smooth joint Brazing cones Remove solid cone sheet aluminum cone must held horizontally joint top prevent flux running off Both hands needed brazing hold torch apply brazing rod Use pair needle-nose pliers hold cone Wrap rubberband around handles keep pliers closed Clamp pliers vise braze use flux right tube will get lot liquid few crystals crystals important part flux empty tube flux small bottle mix thoroughly brazing rod Use same rod apply flux along joint Light torch adjust center blue flame extends /4 5/16-in nozzle Apply heat along joint flux will change liquid white crusty buildup Now move heat small end cone As temperature increases flux will tum back liquid look like water Dip rod bottle flux put joint As rod starts melt move flame rod down joint dont remain spoi longer necessary Watch heat 120 Model Aviation DEALER S DISTRIRUTOR INQUIRIES INVifED 5121 541-3867
