m RTICLESins toon floatj will reveir rvelo itlv diffeiarato off oint se oftenand decide models reasc muca ii strike Ui craft have standai di Mn e cran will w load-cam down rest Qac flJ NO OCR TEXT hat CG The Center-of-Gi WC The Wing Chord 2 positive SZ Stabilizer parallel Longitu4 LA may MT The Motor Thri FT The Float Top un ought ne floats ry slightly higi flying appro ers float ig top th idinal axis line o line winz baseline models aerocyr re accurately id ne airplar iN designers zero eline win [rfoil ot example set positive over sti nd power 0 mrs lea mneral refe cular plans few di water mu adinal axis li ser always S4 angle attac craft consistei Still ice line thrust line ie position floats vhats mosi measuring ly safe longit g zero zontal stabiii igh exact sding tr ases will selage layout zero Much Its normal stab may design re other cont1 o negin wi angle tha r flight t uecessarv gentle swith pr adjust model out use oats C2fl ifidence hon slightly titude over winches penalized 100 points occasionally caused pilot distance task fly diagonally across course final lap two avoid low pass over winches complaint heard about safety rules first imple mented World Champs F3B safety rules currently under consideration ClAM F3B Subcommittee expe rience gained years competition will certainly valuable feature RC Soaring World Cham pionships December 1989 Model Avia tion author Byron Blakeslee pictured sev eral models mentioned present article Floatplanes/Munn Continued page 108 0 top line floats held stabilizer zero line exactly level viewed side front end floats will slightly lower rear end front edge wing should cases slightly higher trailing edge flat-bot tomed Clark-Y-type airfoil some variation air foil position permissible since such airfoil can generate lift slightly negative angle attack Because know airplane will fly its horizontal stabilizer zero degrees airstream can feel confident being very close correct rigging angle theory float rides level on-step airplane will moving through airstream its normal flying attitude adding extra 0 angle have provided extra drag weight floats airplane should gen erate enough lift takeoff speed fly off water little no need elevator pro ceed gentle climb aircraft rest its floats av erage model will appear sitting slightly moderately tail-low because floats have greater displacement front step help counteract combined downward forces must withstandthat power ap plied well above considerable drag water rushing against forward section point pilots stop worrying about float rigging secure knowledge sheer power lots elevator will probably over come remaining minor inconsistencies ever other variables can affect floats per formance include float design itself floats response moving water smoothness finish position prop re spect float tip step CG cor rectly mated Only after conducting number flight tests can determine best rigging throttle advanced both pulling power engine low tail position will tend lift rear end floats toward level attitude no application eleva tor model should get on-step within 30 50 ft depending its power weight As does floats will produce considerably less spray particularly small spray rails have installed along forward bottom edges floats model will accelerate rapidly skims along water actually lifting off except brief skips due water surface tur bulence very slight application up elevator will get smoothly air pre ferred trim model gets on-step quickly lifts off water application up elevator shortly afterward wing operating slightly positive angle necessary step position Although shouldnt cause THE SUPERIOR GLOW PLUGS FOR GO FAST FLYERS ARE BACK! Puts sting engine Unique flat-wound spiral coil element high temperature glass-to-metal seal add up faster ignition increased RPM 1/2A GloBee plugs designed exclusively 049/051 Cox engines Ask new GB-5RX Speed Plug GB-5R Racing Plug GB-5P Sport Plug local dealer today unavailable locally write call Twinn-K collect pricing delivery information FREE GloBee Catalog MAKE THE GLOBEE / INDY CONNECTION Twinn-K Inc 10296 W Washington St Indianapolis IN 46231 Telephone 317-839-6579 FAX 317-839-8928 ing Span 81 Engine 9015 2cyc Wing Area 1100 sq 1218 4cyc Machine Cut Wood Kit including wire londing gear & wing 1aining hdwe VISA & MC accepted $120 Add 500 post & handling Add 300 COD Ohio residents add 60% tax free Catalog send SASE Air Flair1513-878-7487 PQ Box 2075 Foirborn Ohio 45324 serious worries small penalty paid aircraft will exhibit marked ten dency balloon instant touchdown especially done too high speed too steep angle too much elevator flaring will cause porpoising multiskip landings can slow aircraft substantially before touchdown danger tip stalls loss control might able live condition Still its best correct reducing difference angle between float top stabilizer zero line can done strut adjustment Lower rear end floats increments no % between tests until angle achieved requires just slight touch up elevator go very light step gentle climb Some experimenting needed since aircraft high-lift airfoil Clark Y will require much less change alignment will symmetrical near-symmetrical airfoil ar rive desired performance level aircraft has gotten on-step seems glued water often generating lots spray front requiring healthy dose up eleva tor lift off wing being held too nega tive angle attack produce adequate lift such case lower front end floats adjusting strut length increments about / less between tests Incidentally inaccu rate float-to-wing incidence alignment common rigging problem seen pilots seem content live probably cause pilots accustomed giving tricycle-geared ships shot up elevator rotate Common acceptable practice good float flying Several things can cause model plough sluggishly through water power ap plied flier holding too much up elevator forces rear end floats deeper water creating much drag airplane can get on-step frequent cause Reversed float rigging can also lead sluggish performance causes wing operate far too negative angle driving rear end floats water Positioning CG much too far behind float step another possible cause air craft hunkers down water Finally cul prit may simply insufficient power overcome lift-off failure First can change lower pitch prop try again Such prop produces thrust lower ward speeds may boost plane requires Second its sometimes possible break ploughing tendency brief shot down elevator will lift rear end floats Continued page 204 202 Model Aviation Hundreds cowls kits plans Strong lightweight one-piece construction Exact duplicates manufacturers original Also radial cowls wheelpants SendSlOOfor8-pg brocliureOrcall 703-890-60179 am-9 pm EDT phone orders information FIBERGLASS Box 530 Goodview VA 24095 F3B Tech/Edmonds Continued page 104 No654 Tamecat$1525 RO TrainerlspartSter 40150 2-stroke 48161 4-stroke power Wingspan 66 Styled like Navys F14 Four plan sheets No 655 Astrostar$800 FF AMA Class NB Gas plane spans 67 uses 3251350CC power No 656 XF13C$550 CL Profile 15 Carrier plane spans 27% No 193StIletto CL Stunt model McDonald winner 1976 19801982 PAl World Champo 6575 No 262 Creshmeeter CL Crash-proof trainer twn ninesi 5/30 35/40 power$ 125 No 310 1930 Fleet Biplane AC Spsrt Scale fnr 35/40 4-channel Wingspan 56 14 scale Two streets $ 625 No 314 Dnke II AC Ken Wftards flying heal 3-channel 15-power Fly land rernonablo gear $ 375 No 326 Taylor Cub AC Dne Snulls Schoolyard-Scale MOn 2-3 channel Spans 50 in.6 350 No 332 Zephyr RC Swat 2-channel glider hand-launch tow thennal slope soaring.$ 200 No 386 Lawer 200 tIC Sport Scale replica championship Aernhaitc flier Uses 40 power 4-5 channel Two sheets. 6 1075 No 447 112A VAlue America 110 OhI-limer ISA Tesocs model 049 glow 2-channelo.S 650 No 460 440 110 Shoalder-wing sport filer 4-cycle 40-one engine 4 channels.. $ 850 No 465 Eu Max II 110 Fon-fly sporlster 40-size enginen spans 52 Lightweight structure $ 798 No 533 Cesena C-37 RO Schoolyard Scale famoas SOs plane fnr 049110 power 2-ch spans 42 in $ StO No 539 Slmttar Sloujlotlon 15 110 Tailess flying wing 15 engines spans 60 ones 3-ch AC $ 550 oNo569Olectroetreak 110 Electric aerohafic plane spans 44 uses 05 raotsr $ 550 onNo 570Buwy Bee FF Pee Wee-SO plone fur 02 power spans 30 hon either sheet-Salon halt-up surfaces$ 400 0No 572TR-260 AC Sport Scale Aeruliatic plaae 4-sernhre 80/65 power spans 66 in$ 1100 o eJ No 576Serandlpinyl ndeor 828 record-holder spans 17A in$ 325 onNo 578Schwelzer 1-265 110 Qanrter-scale Sailplane spans 125 Twa plan sheets$ 1475 No 561Gee Bee Model Y AC Oulden Age Racer spans 72 14 scale 60 pswer Three plan sheets$ 1175 -No 566 Snapdragon AC Fan-fly/nportster 25130 engines spans 45 in.$ 600 CNo 586Marteh FtC Slope-Soaring Satptane spans 411n nsea 2 110 channelsS 425 C 0No 593Taylorcraft 110 Sport Scale Ightylane Solids standard 2-piecer clipped-wino air chow stunner Spans either 70 0 5815 30/40 two-stroke 40148 four-stroke engine Two plan sheets no docernentatlon $1000 0 No 595Sparrow 110 Sporlster ten 25 eeginen spans 43 in6650 oNo 596Coronet 150 FtC-Assist 3d-Timer enlarged 15015 spans 72 ones 40-she 4-stroku/30-SiZe 2-stroke$950 S598 0No 601NIckel 110 Sporloter r/aA engine 3110 channelo Spans 44 fl0No 603Sparrow Hawk P30 FF Competition ruSher-power plane wan 87 NaSa Spans SO in$225 No 607 Curtlee Seagull AC GlanS Scale hiptane spans 00 uses Qoadra/Zenesh power Three plan sheets mc $2400 No 609 Taperwlng AC rhA Pylon Racer spans 29 Plan plos nne parts template sheet 698 E 0 No 610 Protobype 110 Span hiplane spans 49 onen 45/2-cycle 80/4-cycle power S 850 No 612 NVCL Dragonfly CL ISA Corehat plane all-wend spans 24 Per reed-salon engine 200 No 614 Etectmotator 110 Electric sportuter 05 direct-drive motor spans 44 S 575 No 619 KeIth Alder R4 PP Scale Golden Age racer mhhor power spans 18 S 300 o ENo 620 GImlet 40 110 Spars/Pattern plane spans 60 40150 engine 2 sheets$ 1100 z noNo 632 QuIck P-SO PP Compafliton raSher-power P-SO-class plane spans SO in$ 325 C ClNo 623Hendereon Longeter AC Quarter-scalu 1933 itiroer spans 90A 4-stroke 40140 engine 3 plan sht no 6 1650 No624Keleher Lark 110 Quarter-wale honreholit spans 69 60/90 4-stroke power 2 plan sheets no mc$ 1100 No 626Sweepee FtC Sport/Pattero canards funeard-swept wing spoon 64 uses 40 power 2 plan sheets$1300 No 626Prime Cut FtC Sport/Aerehatic plane spans 9010 ones Quadra 35/40-size power Twa plan sheets$ 1300 No 629P518 Mustang CL Mostly-cardhoard Sport Scale craft spans 60 ones 30140 power Two plans sheets ne decS 1275 CNo 630OrigInal Ply Baby FtC Qfd-Timer spans 72 ones 19/25 2-cycle 40 4-cycle power 2 plan sheets$ 1150 No 632P-51H PP Lahomir Kootnys An-scale RoSher muriel spans 23 in$ 325 C noNo 633Once AC Slopo Soarer spans 75 ones twist-wing control Two-cS FtC XMTR Save electronic reisingS 675 N No 634 552C Heltdlver CL Preitle sport/Stueter spans 54 35/40 power$ 575 0 No 635 Gemblert PP Indoor Bostonlan ruSher-power cahin plane spans 15% in$ 200 no No 636 Keytwo AC Td-geared low-wing sportuter 20125 power spans 44 $ 575 E 0 No 637 A-S Shilke PP Compeititen plane AMA Classes 8 15123 power spoon 60 $ 675 o No 636 Owl Racer CL ikA Scale Racer 049 power spans 20 225 No 639 Skyvolt AC Tri-geared Electric nerehafic nportster 05/15 power spans 50i/ g No 640 BIrd Prey CL AMA Fast Corehat plane 30 power spsns 5304 In 5 550 C 0 No 641 UI Ole Rellabte AC Old-Timer sport flier spans 5004 ISA engines 5 -0No 642 SIp 89 CL PartIal plan updates deBots 40 sendon 35cc power Spans 2204 in$ 225 0No 643Nodule tIB PP SotOke flying wing COn power spans SO in$ 325 CNo 644Bellenca Columbia AC Schoolyard Scale 2 AC channels ihA engine Wingspan 46 in$ 575 onNo 645LaIrd Solution CL Profile Scale Siplane spans 30 25/35 power$ 575 0No 646Wtnter Hawk PP Rohher-pawer Coupe riCher competition plane spans 47 inS 375 No 647Con SpecIal CL Semlscale Siplane ISA engine spans 24 in$ 300 No 64$Curtles OC-2 PP Sinus Outdoor Gas Flying Scale Siplane ones electric power spans 24in HiLine Mini-fl motor$ 325 No 649Thlngamabob AC/CL Motireorie trainer 25 gas 05 electric power npaos Sun$ 475 No 65047/88 AC SpecIal AC Aerohaitc sport plane 40 power spans 6110 3 plan sheets$ 1075 oonNo 651Consortium AC Hand-Launch Hi-Start Glider spans 60 in6 850 anNo 652Der Fledermeus FtC Low-wing sport plane 20125 power spans 55 in$ 675 00No 653Avanti CL Profile Sport Scale canard hinfloer fur hon 049s spans 30 in$ 575 on- i C le numbers plans wish order best handling pease no incude meno n o o quests payment some other service plans order 193262310314326332386447 ~0 o 460465533539569570572576 C --578581586588593595598601 ~P;603607609610612614619620 622623624626628629630632 633634635636637638639640 oon641642643644645646647648 o a 650651652653654655656 no Plan price includes first class postage US delivery Air Mail over 300 miles 10 w- For orders non-US address lease add $250 br Air Mail oSta e handlin Ian Make check money order payable US funds draws US bank Model Aviation c/u AMA 1810 10 - Samuel Morse Dr Reston VA 22090 Please allow 3 6 weeks delivery Please print carefullyEnclosed $ _ NAME __________________________________________ AMA No _______________ STREET N CITY STATE __________________ ZIP______________ third way reduce drag allow better ac celeration carefulty rock aircraft ailerons lifting first other float free very touchy maneuver however experienced pilots shoutd attempt best approach seek assistance expe rienced float pilots can check rigging help necessary adjustments angle between top float 1 lifting surface wing has properly ad justed landings become remarkably easier After turning wind simply reduce power until have steady smooth descent Try avoid using elevator Its often useful point reduce power add touch ep trim lowering airspeed white maintaining same rate descent Just before touchdown takes practice determine exact timing aircraft can flare stightty very gentle touch stp elevatoror preferably slight addition power object touch water same relatively flat attitude plane sumed lift-off extra power touchdown helps prevent pt stowing caused water drag Reduce power gradually after touchdown obtain smooth transition taxi speed technique also ensures against dumping aircraft comes necessary abort takeoff ctose fly ing speed Once youve flown properly rigged floatplane - world wilt seem much friendtier happier place Its welt worth trouble get right Note same general testing technique can apptied amphibians well except rather adjusting strut length adjusts angle attack wing increasing angte shift center-of-gravity slightly forward reducing shift CG bit rear makes possible achieve atmost flying youre on-step attitude signif- icant use elevator Ultimate FOAM CUTTING WIRE Out performs music wire nichrome Pkg 8 Send $400 plus $225 shipping handling Warden Woodworke 14935 MarIe Warren Ml 48093 313294-0890 JEUZTS P K0UN Sq J 4 L LIi 1st US RIC Flight School Stop Crashing Start Learning CLASSES FILLING FAST Info pack $300 1st US RIC FLIGHT SCHOOL 521 S Sawyer Shawano WI 54166 7151 R2829R11 THEt PEAK DETECTOR Tim Abrens aa seen JAN 90 RCM LCD READOUTSASE FOR BROCHURE EASY HOOKUP ASTRO 132 & its CHARGERS repaid TEMPERATURE SENSINGTX Ren add 6% tax 1 28 CELLS AERO ELECTRONICSRT 6 BOX 54J AUSTIN TX 78737512 288-3220 179pm 204 Model Aviation
Edition: Model Aviation - 1990/06
Page Numbers: 106, 107, 108, 202, 204
m RTICLESins toon floatj will reveir rvelo itlv diffeiarato off oint se oftenand decide models reasc muca ii strike Ui craft have standai di Mn e cran will w load-cam down rest Qac flJ NO OCR TEXT hat CG The Center-of-Gi WC The Wing Chord 2 positive SZ Stabilizer parallel Longitu4 LA may MT The Motor Thri FT The Float Top un ought ne floats ry slightly higi flying appro ers float ig top th idinal axis line o line winz baseline models aerocyr re accurately id ne airplar iN designers zero eline win [rfoil ot example set positive over sti nd power 0 mrs lea mneral refe cular plans few di water mu adinal axis li ser always S4 angle attac craft consistei Still ice line thrust line ie position floats vhats mosi measuring ly safe longit g zero zontal stabiii igh exact sding tr ases will selage layout zero Much Its normal stab may design re other cont1 o negin wi angle tha r flight t uecessarv gentle swith pr adjust model out use oats C2fl ifidence hon slightly titude over winches penalized 100 points occasionally caused pilot distance task fly diagonally across course final lap two avoid low pass over winches complaint heard about safety rules first imple mented World Champs F3B safety rules currently under consideration ClAM F3B Subcommittee expe rience gained years competition will certainly valuable feature RC Soaring World Cham pionships December 1989 Model Avia tion author Byron Blakeslee pictured sev eral models mentioned present article Floatplanes/Munn Continued page 108 0 top line floats held stabilizer zero line exactly level viewed side front end floats will slightly lower rear end front edge wing should cases slightly higher trailing edge flat-bot tomed Clark-Y-type airfoil some variation air foil position permissible since such airfoil can generate lift slightly negative angle attack Because know airplane will fly its horizontal stabilizer zero degrees airstream can feel confident being very close correct rigging angle theory float rides level on-step airplane will moving through airstream its normal flying attitude adding extra 0 angle have provided extra drag weight floats airplane should gen erate enough lift takeoff speed fly off water little no need elevator pro ceed gentle climb aircraft rest its floats av erage model will appear sitting slightly moderately tail-low because floats have greater displacement front step help counteract combined downward forces must withstandthat power ap plied well above considerable drag water rushing against forward section point pilots stop worrying about float rigging secure knowledge sheer power lots elevator will probably over come remaining minor inconsistencies ever other variables can affect floats per formance include float design itself floats response moving water smoothness finish position prop re spect float tip step CG cor rectly mated Only after conducting number flight tests can determine best rigging throttle advanced both pulling power engine low tail position will tend lift rear end floats toward level attitude no application eleva tor model should get on-step within 30 50 ft depending its power weight As does floats will produce considerably less spray particularly small spray rails have installed along forward bottom edges floats model will accelerate rapidly skims along water actually lifting off except brief skips due water surface tur bulence very slight application up elevator will get smoothly air pre ferred trim model gets on-step quickly lifts off water application up elevator shortly afterward wing operating slightly positive angle necessary step position Although shouldnt cause THE SUPERIOR GLOW PLUGS FOR GO FAST FLYERS ARE BACK! Puts sting engine Unique flat-wound spiral coil element high temperature glass-to-metal seal add up faster ignition increased RPM 1/2A GloBee plugs designed exclusively 049/051 Cox engines Ask new GB-5RX Speed Plug GB-5R Racing Plug GB-5P Sport Plug local dealer today unavailable locally write call Twinn-K collect pricing delivery information FREE GloBee Catalog MAKE THE GLOBEE / INDY CONNECTION Twinn-K Inc 10296 W Washington St Indianapolis IN 46231 Telephone 317-839-6579 FAX 317-839-8928 ing Span 81 Engine 9015 2cyc Wing Area 1100 sq 1218 4cyc Machine Cut Wood Kit including wire londing gear & wing 1aining hdwe VISA & MC accepted $120 Add 500 post & handling Add 300 COD Ohio residents add 60% tax free Catalog send SASE Air Flair1513-878-7487 PQ Box 2075 Foirborn Ohio 45324 serious worries small penalty paid aircraft will exhibit marked ten dency balloon instant touchdown especially done too high speed too steep angle too much elevator flaring will cause porpoising multiskip landings can slow aircraft substantially before touchdown danger tip stalls loss control might able live condition Still its best correct reducing difference angle between float top stabilizer zero line can done strut adjustment Lower rear end floats increments no % between tests until angle achieved requires just slight touch up elevator go very light step gentle climb Some experimenting needed since aircraft high-lift airfoil Clark Y will require much less change alignment will symmetrical near-symmetrical airfoil ar rive desired performance level aircraft has gotten on-step seems glued water often generating lots spray front requiring healthy dose up eleva tor lift off wing being held too nega tive angle attack produce adequate lift such case lower front end floats adjusting strut length increments about / less between tests Incidentally inaccu rate float-to-wing incidence alignment common rigging problem seen pilots seem content live probably cause pilots accustomed giving tricycle-geared ships shot up elevator rotate Common acceptable practice good float flying Several things can cause model plough sluggishly through water power ap plied flier holding too much up elevator forces rear end floats deeper water creating much drag airplane can get on-step frequent cause Reversed float rigging can also lead sluggish performance causes wing operate far too negative angle driving rear end floats water Positioning CG much too far behind float step another possible cause air craft hunkers down water Finally cul prit may simply insufficient power overcome lift-off failure First can change lower pitch prop try again Such prop produces thrust lower ward speeds may boost plane requires Second its sometimes possible break ploughing tendency brief shot down elevator will lift rear end floats Continued page 204 202 Model Aviation Hundreds cowls kits plans Strong lightweight one-piece construction Exact duplicates manufacturers original Also radial cowls wheelpants SendSlOOfor8-pg brocliureOrcall 703-890-60179 am-9 pm EDT phone orders information FIBERGLASS Box 530 Goodview VA 24095 F3B Tech/Edmonds Continued page 104 No654 Tamecat$1525 RO TrainerlspartSter 40150 2-stroke 48161 4-stroke power Wingspan 66 Styled like Navys F14 Four plan sheets No 655 Astrostar$800 FF AMA Class NB Gas plane spans 67 uses 3251350CC power No 656 XF13C$550 CL Profile 15 Carrier plane spans 27% No 193StIletto CL Stunt model McDonald winner 1976 19801982 PAl World Champo 6575 No 262 Creshmeeter CL Crash-proof trainer twn ninesi 5/30 35/40 power$ 125 No 310 1930 Fleet Biplane AC Spsrt Scale fnr 35/40 4-channel Wingspan 56 14 scale Two streets $ 625 No 314 Dnke II AC Ken Wftards flying heal 3-channel 15-power Fly land rernonablo gear $ 375 No 326 Taylor Cub AC Dne Snulls Schoolyard-Scale MOn 2-3 channel Spans 50 in.6 350 No 332 Zephyr RC Swat 2-channel glider hand-launch tow thennal slope soaring.$ 200 No 386 Lawer 200 tIC Sport Scale replica championship Aernhaitc flier Uses 40 power 4-5 channel Two sheets. 6 1075 No 447 112A VAlue America 110 OhI-limer ISA Tesocs model 049 glow 2-channelo.S 650 No 460 440 110 Shoalder-wing sport filer 4-cycle 40-one engine 4 channels.. $ 850 No 465 Eu Max II 110 Fon-fly sporlster 40-size enginen spans 52 Lightweight structure $ 798 No 533 Cesena C-37 RO Schoolyard Scale famoas SOs plane fnr 049110 power 2-ch spans 42 in $ StO No 539 Slmttar Sloujlotlon 15 110 Tailess flying wing 15 engines spans 60 ones 3-ch AC $ 550 oNo569Olectroetreak 110 Electric aerohafic plane spans 44 uses 05 raotsr $ 550 onNo 570Buwy Bee FF Pee Wee-SO plone fur 02 power spans 30 hon either sheet-Salon halt-up surfaces$ 400 0No 572TR-260 AC Sport Scale Aeruliatic plaae 4-sernhre 80/65 power spans 66 in$ 1100 o eJ No 576Serandlpinyl ndeor 828 record-holder spans 17A in$ 325 onNo 578Schwelzer 1-265 110 Qanrter-scale Sailplane spans 125 Twa plan sheets$ 1475 No 561Gee Bee Model Y AC Oulden Age Racer spans 72 14 scale 60 pswer Three plan sheets$ 1175 -No 566 Snapdragon AC Fan-fly/nportster 25130 engines spans 45 in.$ 600 CNo 586Marteh FtC Slope-Soaring Satptane spans 411n nsea 2 110 channelsS 425 C 0No 593Taylorcraft 110 Sport Scale Ightylane Solids standard 2-piecer clipped-wino air chow stunner Spans either 70 0 5815 30/40 two-stroke 40148 four-stroke engine Two plan sheets no docernentatlon $1000 0 No 595Sparrow 110 Sporlster ten 25 eeginen spans 43 in6650 oNo 596Coronet 150 FtC-Assist 3d-Timer enlarged 15015 spans 72 ones 40-she 4-stroku/30-SiZe 2-stroke$950 S598 0No 601NIckel 110 Sporloter r/aA engine 3110 channelo Spans 44 fl0No 603Sparrow Hawk P30 FF Competition ruSher-power plane wan 87 NaSa Spans SO in$225 No 607 Curtlee Seagull AC GlanS Scale hiptane spans 00 uses Qoadra/Zenesh power Three plan sheets mc $2400 No 609 Taperwlng AC rhA Pylon Racer spans 29 Plan plos nne parts template sheet 698 E 0 No 610 Protobype 110 Span hiplane spans 49 onen 45/2-cycle 80/4-cycle power S 850 No 612 NVCL Dragonfly CL ISA Corehat plane all-wend spans 24 Per reed-salon engine 200 No 614 Etectmotator 110 Electric sportuter 05 direct-drive motor spans 44 S 575 No 619 KeIth Alder R4 PP Scale Golden Age racer mhhor power spans 18 S 300 o ENo 620 GImlet 40 110 Spars/Pattern plane spans 60 40150 engine 2 sheets$ 1100 z noNo 632 QuIck P-SO PP Compafliton raSher-power P-SO-class plane spans SO in$ 325 C ClNo 623Hendereon Longeter AC Quarter-scalu 1933 itiroer spans 90A 4-stroke 40140 engine 3 plan sht no 6 1650 No624Keleher Lark 110 Quarter-wale honreholit spans 69 60/90 4-stroke power 2 plan sheets no mc$ 1100 No 626Sweepee FtC Sport/Pattero canards funeard-swept wing spoon 64 uses 40 power 2 plan sheets$1300 No 626Prime Cut FtC Sport/Aerehatic plane spans 9010 ones Quadra 35/40-size power Twa plan sheets$ 1300 No 629P518 Mustang CL Mostly-cardhoard Sport Scale craft spans 60 ones 30140 power Two plans sheets ne decS 1275 CNo 630OrigInal Ply Baby FtC Qfd-Timer spans 72 ones 19/25 2-cycle 40 4-cycle power 2 plan sheets$ 1150 No 632P-51H PP Lahomir Kootnys An-scale RoSher muriel spans 23 in$ 325 C noNo 633Once AC Slopo Soarer spans 75 ones twist-wing control Two-cS FtC XMTR Save electronic reisingS 675 N No 634 552C Heltdlver CL Preitle sport/Stueter spans 54 35/40 power$ 575 0 No 635 Gemblert PP Indoor Bostonlan ruSher-power cahin plane spans 15% in$ 200 no No 636 Keytwo AC Td-geared low-wing sportuter 20125 power spans 44 $ 575 E 0 No 637 A-S Shilke PP Compeititen plane AMA Classes 8 15123 power spoon 60 $ 675 o No 636 Owl Racer CL ikA Scale Racer 049 power spans 20 225 No 639 Skyvolt AC Tri-geared Electric nerehafic nportster 05/15 power spans 50i/ g No 640 BIrd Prey CL AMA Fast Corehat plane 30 power spsns 5304 In 5 550 C 0 No 641 UI Ole Rellabte AC Old-Timer sport flier spans 5004 ISA engines 5 -0No 642 SIp 89 CL PartIal plan updates deBots 40 sendon 35cc power Spans 2204 in$ 225 0No 643Nodule tIB PP SotOke flying wing COn power spans SO in$ 325 CNo 644Bellenca Columbia AC Schoolyard Scale 2 AC channels ihA engine Wingspan 46 in$ 575 onNo 645LaIrd Solution CL Profile Scale Siplane spans 30 25/35 power$ 575 0No 646Wtnter Hawk PP Rohher-pawer Coupe riCher competition plane spans 47 inS 375 No 647Con SpecIal CL Semlscale Siplane ISA engine spans 24 in$ 300 No 64$Curtles OC-2 PP Sinus Outdoor Gas Flying Scale Siplane ones electric power spans 24in HiLine Mini-fl motor$ 325 No 649Thlngamabob AC/CL Motireorie trainer 25 gas 05 electric power npaos Sun$ 475 No 65047/88 AC SpecIal AC Aerohaitc sport plane 40 power spans 6110 3 plan sheets$ 1075 oonNo 651Consortium AC Hand-Launch Hi-Start Glider spans 60 in6 850 anNo 652Der Fledermeus FtC Low-wing sport plane 20125 power spans 55 in$ 675 00No 653Avanti CL Profile Sport Scale canard hinfloer fur hon 049s spans 30 in$ 575 on- i C le numbers plans wish order best handling pease no incude meno n o o quests payment some other service plans order 193262310314326332386447 ~0 o 460465533539569570572576 C --578581586588593595598601 ~P;603607609610612614619620 622623624626628629630632 633634635636637638639640 oon641642643644645646647648 o a 650651652653654655656 no Plan price includes first class postage US delivery Air Mail over 300 miles 10 w- For orders non-US address lease add $250 br Air Mail oSta e handlin Ian Make check money order payable US funds draws US bank Model Aviation c/u AMA 1810 10 - Samuel Morse Dr Reston VA 22090 Please allow 3 6 weeks delivery Please print carefullyEnclosed $ _ NAME __________________________________________ AMA No _______________ STREET N CITY STATE __________________ ZIP______________ third way reduce drag allow better ac celeration carefulty rock aircraft ailerons lifting first other float free very touchy maneuver however experienced pilots shoutd attempt best approach seek assistance expe rienced float pilots can check rigging help necessary adjustments angle between top float 1 lifting surface wing has properly ad justed landings become remarkably easier After turning wind simply reduce power until have steady smooth descent Try avoid using elevator Its often useful point reduce power add touch ep trim lowering airspeed white maintaining same rate descent Just before touchdown takes practice determine exact timing aircraft can flare stightty very gentle touch stp elevatoror preferably slight addition power object touch water same relatively flat attitude plane sumed lift-off extra power touchdown helps prevent pt stowing caused water drag Reduce power gradually after touchdown obtain smooth transition taxi speed technique also ensures against dumping aircraft comes necessary abort takeoff ctose fly ing speed Once youve flown properly rigged floatplane - world wilt seem much friendtier happier place Its welt worth trouble get right Note same general testing technique can apptied amphibians well except rather adjusting strut length adjusts angle attack wing increasing angte shift center-of-gravity slightly forward reducing shift CG bit rear makes possible achieve atmost flying youre on-step attitude signif- icant use elevator Ultimate FOAM CUTTING WIRE Out performs music wire nichrome Pkg 8 Send $400 plus $225 shipping handling Warden Woodworke 14935 MarIe Warren Ml 48093 313294-0890 JEUZTS P K0UN Sq J 4 L LIi 1st US RIC Flight School Stop Crashing Start Learning CLASSES FILLING FAST Info pack $300 1st US RIC FLIGHT SCHOOL 521 S Sawyer Shawano WI 54166 7151 R2829R11 THEt PEAK DETECTOR Tim Abrens aa seen JAN 90 RCM LCD READOUTSASE FOR BROCHURE EASY HOOKUP ASTRO 132 & its CHARGERS repaid TEMPERATURE SENSINGTX Ren add 6% tax 1 28 CELLS AERO ELECTRONICSRT 6 BOX 54J AUSTIN TX 78737512 288-3220 179pm 204 Model Aviation
Edition: Model Aviation - 1990/06
Page Numbers: 106, 107, 108, 202, 204
m RTICLESins toon floatj will reveir rvelo itlv diffeiarato off oint se oftenand decide models reasc muca ii strike Ui craft have standai di Mn e cran will w load-cam down rest Qac flJ NO OCR TEXT hat CG The Center-of-Gi WC The Wing Chord 2 positive SZ Stabilizer parallel Longitu4 LA may MT The Motor Thri FT The Float Top un ought ne floats ry slightly higi flying appro ers float ig top th idinal axis line o line winz baseline models aerocyr re accurately id ne airplar iN designers zero eline win [rfoil ot example set positive over sti nd power 0 mrs lea mneral refe cular plans few di water mu adinal axis li ser always S4 angle attac craft consistei Still ice line thrust line ie position floats vhats mosi measuring ly safe longit g zero zontal stabiii igh exact sding tr ases will selage layout zero Much Its normal stab may design re other cont1 o negin wi angle tha r flight t uecessarv gentle swith pr adjust model out use oats C2fl ifidence hon slightly titude over winches penalized 100 points occasionally caused pilot distance task fly diagonally across course final lap two avoid low pass over winches complaint heard about safety rules first imple mented World Champs F3B safety rules currently under consideration ClAM F3B Subcommittee expe rience gained years competition will certainly valuable feature RC Soaring World Cham pionships December 1989 Model Avia tion author Byron Blakeslee pictured sev eral models mentioned present article Floatplanes/Munn Continued page 108 0 top line floats held stabilizer zero line exactly level viewed side front end floats will slightly lower rear end front edge wing should cases slightly higher trailing edge flat-bot tomed Clark-Y-type airfoil some variation air foil position permissible since such airfoil can generate lift slightly negative angle attack Because know airplane will fly its horizontal stabilizer zero degrees airstream can feel confident being very close correct rigging angle theory float rides level on-step airplane will moving through airstream its normal flying attitude adding extra 0 angle have provided extra drag weight floats airplane should gen erate enough lift takeoff speed fly off water little no need elevator pro ceed gentle climb aircraft rest its floats av erage model will appear sitting slightly moderately tail-low because floats have greater displacement front step help counteract combined downward forces must withstandthat power ap plied well above considerable drag water rushing against forward section point pilots stop worrying about float rigging secure knowledge sheer power lots elevator will probably over come remaining minor inconsistencies ever other variables can affect floats per formance include float design itself floats response moving water smoothness finish position prop re spect float tip step CG cor rectly mated Only after conducting number flight tests can determine best rigging throttle advanced both pulling power engine low tail position will tend lift rear end floats toward level attitude no application eleva tor model should get on-step within 30 50 ft depending its power weight As does floats will produce considerably less spray particularly small spray rails have installed along forward bottom edges floats model will accelerate rapidly skims along water actually lifting off except brief skips due water surface tur bulence very slight application up elevator will get smoothly air pre ferred trim model gets on-step quickly lifts off water application up elevator shortly afterward wing operating slightly positive angle necessary step position Although shouldnt cause THE SUPERIOR GLOW PLUGS FOR GO FAST FLYERS ARE BACK! Puts sting engine Unique flat-wound spiral coil element high temperature glass-to-metal seal add up faster ignition increased RPM 1/2A GloBee plugs designed exclusively 049/051 Cox engines Ask new GB-5RX Speed Plug GB-5R Racing Plug GB-5P Sport Plug local dealer today unavailable locally write call Twinn-K collect pricing delivery information FREE GloBee Catalog MAKE THE GLOBEE / INDY CONNECTION Twinn-K Inc 10296 W Washington St Indianapolis IN 46231 Telephone 317-839-6579 FAX 317-839-8928 ing Span 81 Engine 9015 2cyc Wing Area 1100 sq 1218 4cyc Machine Cut Wood Kit including wire londing gear & wing 1aining hdwe VISA & MC accepted $120 Add 500 post & handling Add 300 COD Ohio residents add 60% tax free Catalog send SASE Air Flair1513-878-7487 PQ Box 2075 Foirborn Ohio 45324 serious worries small penalty paid aircraft will exhibit marked ten dency balloon instant touchdown especially done too high speed too steep angle too much elevator flaring will cause porpoising multiskip landings can slow aircraft substantially before touchdown danger tip stalls loss control might able live condition Still its best correct reducing difference angle between float top stabilizer zero line can done strut adjustment Lower rear end floats increments no % between tests until angle achieved requires just slight touch up elevator go very light step gentle climb Some experimenting needed since aircraft high-lift airfoil Clark Y will require much less change alignment will symmetrical near-symmetrical airfoil ar rive desired performance level aircraft has gotten on-step seems glued water often generating lots spray front requiring healthy dose up eleva tor lift off wing being held too nega tive angle attack produce adequate lift such case lower front end floats adjusting strut length increments about / less between tests Incidentally inaccu rate float-to-wing incidence alignment common rigging problem seen pilots seem content live probably cause pilots accustomed giving tricycle-geared ships shot up elevator rotate Common acceptable practice good float flying Several things can cause model plough sluggishly through water power ap plied flier holding too much up elevator forces rear end floats deeper water creating much drag airplane can get on-step frequent cause Reversed float rigging can also lead sluggish performance causes wing operate far too negative angle driving rear end floats water Positioning CG much too far behind float step another possible cause air craft hunkers down water Finally cul prit may simply insufficient power overcome lift-off failure First can change lower pitch prop try again Such prop produces thrust lower ward speeds may boost plane requires Second its sometimes possible break ploughing tendency brief shot down elevator will lift rear end floats Continued page 204 202 Model Aviation Hundreds cowls kits plans Strong lightweight one-piece construction Exact duplicates manufacturers original Also radial cowls wheelpants SendSlOOfor8-pg brocliureOrcall 703-890-60179 am-9 pm EDT phone orders information FIBERGLASS Box 530 Goodview VA 24095 F3B Tech/Edmonds Continued page 104 No654 Tamecat$1525 RO TrainerlspartSter 40150 2-stroke 48161 4-stroke power Wingspan 66 Styled like Navys F14 Four plan sheets No 655 Astrostar$800 FF AMA Class NB Gas plane spans 67 uses 3251350CC power No 656 XF13C$550 CL Profile 15 Carrier plane spans 27% No 193StIletto CL Stunt model McDonald winner 1976 19801982 PAl World Champo 6575 No 262 Creshmeeter CL Crash-proof trainer twn ninesi 5/30 35/40 power$ 125 No 310 1930 Fleet Biplane AC Spsrt Scale fnr 35/40 4-channel Wingspan 56 14 scale Two streets $ 625 No 314 Dnke II AC Ken Wftards flying heal 3-channel 15-power Fly land rernonablo gear $ 375 No 326 Taylor Cub AC Dne Snulls Schoolyard-Scale MOn 2-3 channel Spans 50 in.6 350 No 332 Zephyr RC Swat 2-channel glider hand-launch tow thennal slope soaring.$ 200 No 386 Lawer 200 tIC Sport Scale replica championship Aernhaitc flier Uses 40 power 4-5 channel Two sheets. 6 1075 No 447 112A VAlue America 110 OhI-limer ISA Tesocs model 049 glow 2-channelo.S 650 No 460 440 110 Shoalder-wing sport filer 4-cycle 40-one engine 4 channels.. $ 850 No 465 Eu Max II 110 Fon-fly sporlster 40-size enginen spans 52 Lightweight structure $ 798 No 533 Cesena C-37 RO Schoolyard Scale famoas SOs plane fnr 049110 power 2-ch spans 42 in $ StO No 539 Slmttar Sloujlotlon 15 110 Tailess flying wing 15 engines spans 60 ones 3-ch AC $ 550 oNo569Olectroetreak 110 Electric aerohafic plane spans 44 uses 05 raotsr $ 550 onNo 570Buwy Bee FF Pee Wee-SO plone fur 02 power spans 30 hon either sheet-Salon halt-up surfaces$ 400 0No 572TR-260 AC Sport Scale Aeruliatic plaae 4-sernhre 80/65 power spans 66 in$ 1100 o eJ No 576Serandlpinyl ndeor 828 record-holder spans 17A in$ 325 onNo 578Schwelzer 1-265 110 Qanrter-scale Sailplane spans 125 Twa plan sheets$ 1475 No 561Gee Bee Model Y AC Oulden Age Racer spans 72 14 scale 60 pswer Three plan sheets$ 1175 -No 566 Snapdragon AC Fan-fly/nportster 25130 engines spans 45 in.$ 600 CNo 586Marteh FtC Slope-Soaring Satptane spans 411n nsea 2 110 channelsS 425 C 0No 593Taylorcraft 110 Sport Scale Ightylane Solids standard 2-piecer clipped-wino air chow stunner Spans either 70 0 5815 30/40 two-stroke 40148 four-stroke engine Two plan sheets no docernentatlon $1000 0 No 595Sparrow 110 Sporlster ten 25 eeginen spans 43 in6650 oNo 596Coronet 150 FtC-Assist 3d-Timer enlarged 15015 spans 72 ones 40-she 4-stroku/30-SiZe 2-stroke$950 S598 0No 601NIckel 110 Sporloter r/aA engine 3110 channelo Spans 44 fl0No 603Sparrow Hawk P30 FF Competition ruSher-power plane wan 87 NaSa Spans SO in$225 No 607 Curtlee Seagull AC GlanS Scale hiptane spans 00 uses Qoadra/Zenesh power Three plan sheets mc $2400 No 609 Taperwlng AC rhA Pylon Racer spans 29 Plan plos nne parts template sheet 698 E 0 No 610 Protobype 110 Span hiplane spans 49 onen 45/2-cycle 80/4-cycle power S 850 No 612 NVCL Dragonfly CL ISA Corehat plane all-wend spans 24 Per reed-salon engine 200 No 614 Etectmotator 110 Electric sportuter 05 direct-drive motor spans 44 S 575 No 619 KeIth Alder R4 PP Scale Golden Age racer mhhor power spans 18 S 300 o ENo 620 GImlet 40 110 Spars/Pattern plane spans 60 40150 engine 2 sheets$ 1100 z noNo 632 QuIck P-SO PP Compafliton raSher-power P-SO-class plane spans SO in$ 325 C ClNo 623Hendereon Longeter AC Quarter-scalu 1933 itiroer spans 90A 4-stroke 40140 engine 3 plan sht no 6 1650 No624Keleher Lark 110 Quarter-wale honreholit spans 69 60/90 4-stroke power 2 plan sheets no mc$ 1100 No 626Sweepee FtC Sport/Pattero canards funeard-swept wing spoon 64 uses 40 power 2 plan sheets$1300 No 626Prime Cut FtC Sport/Aerehatic plane spans 9010 ones Quadra 35/40-size power Twa plan sheets$ 1300 No 629P518 Mustang CL Mostly-cardhoard Sport Scale craft spans 60 ones 30140 power Two plans sheets ne decS 1275 CNo 630OrigInal Ply Baby FtC Qfd-Timer spans 72 ones 19/25 2-cycle 40 4-cycle power 2 plan sheets$ 1150 No 632P-51H PP Lahomir Kootnys An-scale RoSher muriel spans 23 in$ 325 C noNo 633Once AC Slopo Soarer spans 75 ones twist-wing control Two-cS FtC XMTR Save electronic reisingS 675 N No 634 552C Heltdlver CL Preitle sport/Stueter spans 54 35/40 power$ 575 0 No 635 Gemblert PP Indoor Bostonlan ruSher-power cahin plane spans 15% in$ 200 no No 636 Keytwo AC Td-geared low-wing sportuter 20125 power spans 44 $ 575 E 0 No 637 A-S Shilke PP Compeititen plane AMA Classes 8 15123 power spoon 60 $ 675 o No 636 Owl Racer CL ikA Scale Racer 049 power spans 20 225 No 639 Skyvolt AC Tri-geared Electric nerehafic nportster 05/15 power spans 50i/ g No 640 BIrd Prey CL AMA Fast Corehat plane 30 power spsns 5304 In 5 550 C 0 No 641 UI Ole Rellabte AC Old-Timer sport flier spans 5004 ISA engines 5 -0No 642 SIp 89 CL PartIal plan updates deBots 40 sendon 35cc power Spans 2204 in$ 225 0No 643Nodule tIB PP SotOke flying wing COn power spans SO in$ 325 CNo 644Bellenca Columbia AC Schoolyard Scale 2 AC channels ihA engine Wingspan 46 in$ 575 onNo 645LaIrd Solution CL Profile Scale Siplane spans 30 25/35 power$ 575 0No 646Wtnter Hawk PP Rohher-pawer Coupe riCher competition plane spans 47 inS 375 No 647Con SpecIal CL Semlscale Siplane ISA engine spans 24 in$ 300 No 64$Curtles OC-2 PP Sinus Outdoor Gas Flying Scale Siplane ones electric power spans 24in HiLine Mini-fl motor$ 325 No 649Thlngamabob AC/CL Motireorie trainer 25 gas 05 electric power npaos Sun$ 475 No 65047/88 AC SpecIal AC Aerohaitc sport plane 40 power spans 6110 3 plan sheets$ 1075 oonNo 651Consortium AC Hand-Launch Hi-Start Glider spans 60 in6 850 anNo 652Der Fledermeus FtC Low-wing sport plane 20125 power spans 55 in$ 675 00No 653Avanti CL Profile Sport Scale canard hinfloer fur hon 049s spans 30 in$ 575 on- i C le numbers plans wish order best handling pease no incude meno n o o quests payment some other service plans order 193262310314326332386447 ~0 o 460465533539569570572576 C --578581586588593595598601 ~P;603607609610612614619620 622623624626628629630632 633634635636637638639640 oon641642643644645646647648 o a 650651652653654655656 no Plan price includes first class postage US delivery Air Mail over 300 miles 10 w- For orders non-US address lease add $250 br Air Mail oSta e handlin Ian Make check money order payable US funds draws US bank Model Aviation c/u AMA 1810 10 - Samuel Morse Dr Reston VA 22090 Please allow 3 6 weeks delivery Please print carefullyEnclosed $ _ NAME __________________________________________ AMA No _______________ STREET N CITY STATE __________________ ZIP______________ third way reduce drag allow better ac celeration carefulty rock aircraft ailerons lifting first other float free very touchy maneuver however experienced pilots shoutd attempt best approach seek assistance expe rienced float pilots can check rigging help necessary adjustments angle between top float 1 lifting surface wing has properly ad justed landings become remarkably easier After turning wind simply reduce power until have steady smooth descent Try avoid using elevator Its often useful point reduce power add touch ep trim lowering airspeed white maintaining same rate descent Just before touchdown takes practice determine exact timing aircraft can flare stightty very gentle touch stp elevatoror preferably slight addition power object touch water same relatively flat attitude plane sumed lift-off extra power touchdown helps prevent pt stowing caused water drag Reduce power gradually after touchdown obtain smooth transition taxi speed technique also ensures against dumping aircraft comes necessary abort takeoff ctose fly ing speed Once youve flown properly rigged floatplane - world wilt seem much friendtier happier place Its welt worth trouble get right Note same general testing technique can apptied amphibians well except rather adjusting strut length adjusts angle attack wing increasing angte shift center-of-gravity slightly forward reducing shift CG bit rear makes possible achieve atmost flying youre on-step attitude signif- icant use elevator Ultimate FOAM CUTTING WIRE Out performs music wire nichrome Pkg 8 Send $400 plus $225 shipping handling Warden Woodworke 14935 MarIe Warren Ml 48093 313294-0890 JEUZTS P K0UN Sq J 4 L LIi 1st US RIC Flight School Stop Crashing Start Learning CLASSES FILLING FAST Info pack $300 1st US RIC FLIGHT SCHOOL 521 S Sawyer Shawano WI 54166 7151 R2829R11 THEt PEAK DETECTOR Tim Abrens aa seen JAN 90 RCM LCD READOUTSASE FOR BROCHURE EASY HOOKUP ASTRO 132 & its CHARGERS repaid TEMPERATURE SENSINGTX Ren add 6% tax 1 28 CELLS AERO ELECTRONICSRT 6 BOX 54J AUSTIN TX 78737512 288-3220 179pm 204 Model Aviation
Edition: Model Aviation - 1990/06
Page Numbers: 106, 107, 108, 202, 204
m RTICLESins toon floatj will reveir rvelo itlv diffeiarato off oint se oftenand decide models reasc muca ii strike Ui craft have standai di Mn e cran will w load-cam down rest Qac flJ NO OCR TEXT hat CG The Center-of-Gi WC The Wing Chord 2 positive SZ Stabilizer parallel Longitu4 LA may MT The Motor Thri FT The Float Top un ought ne floats ry slightly higi flying appro ers float ig top th idinal axis line o line winz baseline models aerocyr re accurately id ne airplar iN designers zero eline win [rfoil ot example set positive over sti nd power 0 mrs lea mneral refe cular plans few di water mu adinal axis li ser always S4 angle attac craft consistei Still ice line thrust line ie position floats vhats mosi measuring ly safe longit g zero zontal stabiii igh exact sding tr ases will selage layout zero Much Its normal stab may design re other cont1 o negin wi angle tha r flight t uecessarv gentle swith pr adjust model out use oats C2fl ifidence hon slightly titude over winches penalized 100 points occasionally caused pilot distance task fly diagonally across course final lap two avoid low pass over winches complaint heard about safety rules first imple mented World Champs F3B safety rules currently under consideration ClAM F3B Subcommittee expe rience gained years competition will certainly valuable feature RC Soaring World Cham pionships December 1989 Model Avia tion author Byron Blakeslee pictured sev eral models mentioned present article Floatplanes/Munn Continued page 108 0 top line floats held stabilizer zero line exactly level viewed side front end floats will slightly lower rear end front edge wing should cases slightly higher trailing edge flat-bot tomed Clark-Y-type airfoil some variation air foil position permissible since such airfoil can generate lift slightly negative angle attack Because know airplane will fly its horizontal stabilizer zero degrees airstream can feel confident being very close correct rigging angle theory float rides level on-step airplane will moving through airstream its normal flying attitude adding extra 0 angle have provided extra drag weight floats airplane should gen erate enough lift takeoff speed fly off water little no need elevator pro ceed gentle climb aircraft rest its floats av erage model will appear sitting slightly moderately tail-low because floats have greater displacement front step help counteract combined downward forces must withstandthat power ap plied well above considerable drag water rushing against forward section point pilots stop worrying about float rigging secure knowledge sheer power lots elevator will probably over come remaining minor inconsistencies ever other variables can affect floats per formance include float design itself floats response moving water smoothness finish position prop re spect float tip step CG cor rectly mated Only after conducting number flight tests can determine best rigging throttle advanced both pulling power engine low tail position will tend lift rear end floats toward level attitude no application eleva tor model should get on-step within 30 50 ft depending its power weight As does floats will produce considerably less spray particularly small spray rails have installed along forward bottom edges floats model will accelerate rapidly skims along water actually lifting off except brief skips due water surface tur bulence very slight application up elevator will get smoothly air pre ferred trim model gets on-step quickly lifts off water application up elevator shortly afterward wing operating slightly positive angle necessary step position Although shouldnt cause THE SUPERIOR GLOW PLUGS FOR GO FAST FLYERS ARE BACK! Puts sting engine Unique flat-wound spiral coil element high temperature glass-to-metal seal add up faster ignition increased RPM 1/2A GloBee plugs designed exclusively 049/051 Cox engines Ask new GB-5RX Speed Plug GB-5R Racing Plug GB-5P Sport Plug local dealer today unavailable locally write call Twinn-K collect pricing delivery information FREE GloBee Catalog MAKE THE GLOBEE / INDY CONNECTION Twinn-K Inc 10296 W Washington St Indianapolis IN 46231 Telephone 317-839-6579 FAX 317-839-8928 ing Span 81 Engine 9015 2cyc Wing Area 1100 sq 1218 4cyc Machine Cut Wood Kit including wire londing gear & wing 1aining hdwe VISA & MC accepted $120 Add 500 post & handling Add 300 COD Ohio residents add 60% tax free Catalog send SASE Air Flair1513-878-7487 PQ Box 2075 Foirborn Ohio 45324 serious worries small penalty paid aircraft will exhibit marked ten dency balloon instant touchdown especially done too high speed too steep angle too much elevator flaring will cause porpoising multiskip landings can slow aircraft substantially before touchdown danger tip stalls loss control might able live condition Still its best correct reducing difference angle between float top stabilizer zero line can done strut adjustment Lower rear end floats increments no % between tests until angle achieved requires just slight touch up elevator go very light step gentle climb Some experimenting needed since aircraft high-lift airfoil Clark Y will require much less change alignment will symmetrical near-symmetrical airfoil ar rive desired performance level aircraft has gotten on-step seems glued water often generating lots spray front requiring healthy dose up eleva tor lift off wing being held too nega tive angle attack produce adequate lift such case lower front end floats adjusting strut length increments about / less between tests Incidentally inaccu rate float-to-wing incidence alignment common rigging problem seen pilots seem content live probably cause pilots accustomed giving tricycle-geared ships shot up elevator rotate Common acceptable practice good float flying Several things can cause model plough sluggishly through water power ap plied flier holding too much up elevator forces rear end floats deeper water creating much drag airplane can get on-step frequent cause Reversed float rigging can also lead sluggish performance causes wing operate far too negative angle driving rear end floats water Positioning CG much too far behind float step another possible cause air craft hunkers down water Finally cul prit may simply insufficient power overcome lift-off failure First can change lower pitch prop try again Such prop produces thrust lower ward speeds may boost plane requires Second its sometimes possible break ploughing tendency brief shot down elevator will lift rear end floats Continued page 204 202 Model Aviation Hundreds cowls kits plans Strong lightweight one-piece construction Exact duplicates manufacturers original Also radial cowls wheelpants SendSlOOfor8-pg brocliureOrcall 703-890-60179 am-9 pm EDT phone orders information FIBERGLASS Box 530 Goodview VA 24095 F3B Tech/Edmonds Continued page 104 No654 Tamecat$1525 RO TrainerlspartSter 40150 2-stroke 48161 4-stroke power Wingspan 66 Styled like Navys F14 Four plan sheets No 655 Astrostar$800 FF AMA Class NB Gas plane spans 67 uses 3251350CC power No 656 XF13C$550 CL Profile 15 Carrier plane spans 27% No 193StIletto CL Stunt model McDonald winner 1976 19801982 PAl World Champo 6575 No 262 Creshmeeter CL Crash-proof trainer twn ninesi 5/30 35/40 power$ 125 No 310 1930 Fleet Biplane AC Spsrt Scale fnr 35/40 4-channel Wingspan 56 14 scale Two streets $ 625 No 314 Dnke II AC Ken Wftards flying heal 3-channel 15-power Fly land rernonablo gear $ 375 No 326 Taylor Cub AC Dne Snulls Schoolyard-Scale MOn 2-3 channel Spans 50 in.6 350 No 332 Zephyr RC Swat 2-channel glider hand-launch tow thennal slope soaring.$ 200 No 386 Lawer 200 tIC Sport Scale replica championship Aernhaitc flier Uses 40 power 4-5 channel Two sheets. 6 1075 No 447 112A VAlue America 110 OhI-limer ISA Tesocs model 049 glow 2-channelo.S 650 No 460 440 110 Shoalder-wing sport filer 4-cycle 40-one engine 4 channels.. $ 850 No 465 Eu Max II 110 Fon-fly sporlster 40-size enginen spans 52 Lightweight structure $ 798 No 533 Cesena C-37 RO Schoolyard Scale famoas SOs plane fnr 049110 power 2-ch spans 42 in $ StO No 539 Slmttar Sloujlotlon 15 110 Tailess flying wing 15 engines spans 60 ones 3-ch AC $ 550 oNo569Olectroetreak 110 Electric aerohafic plane spans 44 uses 05 raotsr $ 550 onNo 570Buwy Bee FF Pee Wee-SO plone fur 02 power spans 30 hon either sheet-Salon halt-up surfaces$ 400 0No 572TR-260 AC Sport Scale Aeruliatic plaae 4-sernhre 80/65 power spans 66 in$ 1100 o eJ No 576Serandlpinyl ndeor 828 record-holder spans 17A in$ 325 onNo 578Schwelzer 1-265 110 Qanrter-scale Sailplane spans 125 Twa plan sheets$ 1475 No 561Gee Bee Model Y AC Oulden Age Racer spans 72 14 scale 60 pswer Three plan sheets$ 1175 -No 566 Snapdragon AC Fan-fly/nportster 25130 engines spans 45 in.$ 600 CNo 586Marteh FtC Slope-Soaring Satptane spans 411n nsea 2 110 channelsS 425 C 0No 593Taylorcraft 110 Sport Scale Ightylane Solids standard 2-piecer clipped-wino air chow stunner Spans either 70 0 5815 30/40 two-stroke 40148 four-stroke engine Two plan sheets no docernentatlon $1000 0 No 595Sparrow 110 Sporlster ten 25 eeginen spans 43 in6650 oNo 596Coronet 150 FtC-Assist 3d-Timer enlarged 15015 spans 72 ones 40-she 4-stroku/30-SiZe 2-stroke$950 S598 0No 601NIckel 110 Sporloter r/aA engine 3110 channelo Spans 44 fl0No 603Sparrow Hawk P30 FF Competition ruSher-power plane wan 87 NaSa Spans SO in$225 No 607 Curtlee Seagull AC GlanS Scale hiptane spans 00 uses Qoadra/Zenesh power Three plan sheets mc $2400 No 609 Taperwlng AC rhA Pylon Racer spans 29 Plan plos nne parts template sheet 698 E 0 No 610 Protobype 110 Span hiplane spans 49 onen 45/2-cycle 80/4-cycle power S 850 No 612 NVCL Dragonfly CL ISA Corehat plane all-wend spans 24 Per reed-salon engine 200 No 614 Etectmotator 110 Electric sportuter 05 direct-drive motor spans 44 S 575 No 619 KeIth Alder R4 PP Scale Golden Age racer mhhor power spans 18 S 300 o ENo 620 GImlet 40 110 Spars/Pattern plane spans 60 40150 engine 2 sheets$ 1100 z noNo 632 QuIck P-SO PP Compafliton raSher-power P-SO-class plane spans SO in$ 325 C ClNo 623Hendereon Longeter AC Quarter-scalu 1933 itiroer spans 90A 4-stroke 40140 engine 3 plan sht no 6 1650 No624Keleher Lark 110 Quarter-wale honreholit spans 69 60/90 4-stroke power 2 plan sheets no mc$ 1100 No 626Sweepee FtC Sport/Pattero canards funeard-swept wing spoon 64 uses 40 power 2 plan sheets$1300 No 626Prime Cut FtC Sport/Aerehatic plane spans 9010 ones Quadra 35/40-size power Twa plan sheets$ 1300 No 629P518 Mustang CL Mostly-cardhoard Sport Scale craft spans 60 ones 30140 power Two plans sheets ne decS 1275 CNo 630OrigInal Ply Baby FtC Qfd-Timer spans 72 ones 19/25 2-cycle 40 4-cycle power 2 plan sheets$ 1150 No 632P-51H PP Lahomir Kootnys An-scale RoSher muriel spans 23 in$ 325 C noNo 633Once AC Slopo Soarer spans 75 ones twist-wing control Two-cS FtC XMTR Save electronic reisingS 675 N No 634 552C Heltdlver CL Preitle sport/Stueter spans 54 35/40 power$ 575 0 No 635 Gemblert PP Indoor Bostonlan ruSher-power cahin plane spans 15% in$ 200 no No 636 Keytwo AC Td-geared low-wing sportuter 20125 power spans 44 $ 575 E 0 No 637 A-S Shilke PP Compeititen plane AMA Classes 8 15123 power spoon 60 $ 675 o No 636 Owl Racer CL ikA Scale Racer 049 power spans 20 225 No 639 Skyvolt AC Tri-geared Electric nerehafic nportster 05/15 power spans 50i/ g No 640 BIrd Prey CL AMA Fast Corehat plane 30 power spsns 5304 In 5 550 C 0 No 641 UI Ole Rellabte AC Old-Timer sport flier spans 5004 ISA engines 5 -0No 642 SIp 89 CL PartIal plan updates deBots 40 sendon 35cc power Spans 2204 in$ 225 0No 643Nodule tIB PP SotOke flying wing COn power spans SO in$ 325 CNo 644Bellenca Columbia AC Schoolyard Scale 2 AC channels ihA engine Wingspan 46 in$ 575 onNo 645LaIrd Solution CL Profile Scale Siplane spans 30 25/35 power$ 575 0No 646Wtnter Hawk PP Rohher-pawer Coupe riCher competition plane spans 47 inS 375 No 647Con SpecIal CL Semlscale Siplane ISA engine spans 24 in$ 300 No 64$Curtles OC-2 PP Sinus Outdoor Gas Flying Scale Siplane ones electric power spans 24in HiLine Mini-fl motor$ 325 No 649Thlngamabob AC/CL Motireorie trainer 25 gas 05 electric power npaos Sun$ 475 No 65047/88 AC SpecIal AC Aerohaitc sport plane 40 power spans 6110 3 plan sheets$ 1075 oonNo 651Consortium AC Hand-Launch Hi-Start Glider spans 60 in6 850 anNo 652Der Fledermeus FtC Low-wing sport plane 20125 power spans 55 in$ 675 00No 653Avanti CL Profile Sport Scale canard hinfloer fur hon 049s spans 30 in$ 575 on- i C le numbers plans wish order best handling pease no incude meno n o o quests payment some other service plans order 193262310314326332386447 ~0 o 460465533539569570572576 C --578581586588593595598601 ~P;603607609610612614619620 622623624626628629630632 633634635636637638639640 oon641642643644645646647648 o a 650651652653654655656 no Plan price includes first class postage US delivery Air Mail over 300 miles 10 w- For orders non-US address lease add $250 br Air Mail oSta e handlin Ian Make check money order payable US funds draws US bank Model Aviation c/u AMA 1810 10 - Samuel Morse Dr Reston VA 22090 Please allow 3 6 weeks delivery Please print carefullyEnclosed $ _ NAME __________________________________________ AMA No _______________ STREET N CITY STATE __________________ ZIP______________ third way reduce drag allow better ac celeration carefulty rock aircraft ailerons lifting first other float free very touchy maneuver however experienced pilots shoutd attempt best approach seek assistance expe rienced float pilots can check rigging help necessary adjustments angle between top float 1 lifting surface wing has properly ad justed landings become remarkably easier After turning wind simply reduce power until have steady smooth descent Try avoid using elevator Its often useful point reduce power add touch ep trim lowering airspeed white maintaining same rate descent Just before touchdown takes practice determine exact timing aircraft can flare stightty very gentle touch stp elevatoror preferably slight addition power object touch water same relatively flat attitude plane sumed lift-off extra power touchdown helps prevent pt stowing caused water drag Reduce power gradually after touchdown obtain smooth transition taxi speed technique also ensures against dumping aircraft comes necessary abort takeoff ctose fly ing speed Once youve flown properly rigged floatplane - world wilt seem much friendtier happier place Its welt worth trouble get right Note same general testing technique can apptied amphibians well except rather adjusting strut length adjusts angle attack wing increasing angte shift center-of-gravity slightly forward reducing shift CG bit rear makes possible achieve atmost flying youre on-step attitude signif- icant use elevator Ultimate FOAM CUTTING WIRE Out performs music wire nichrome Pkg 8 Send $400 plus $225 shipping handling Warden Woodworke 14935 MarIe Warren Ml 48093 313294-0890 JEUZTS P K0UN Sq J 4 L LIi 1st US RIC Flight School Stop Crashing Start Learning CLASSES FILLING FAST Info pack $300 1st US RIC FLIGHT SCHOOL 521 S Sawyer Shawano WI 54166 7151 R2829R11 THEt PEAK DETECTOR Tim Abrens aa seen JAN 90 RCM LCD READOUTSASE FOR BROCHURE EASY HOOKUP ASTRO 132 & its CHARGERS repaid TEMPERATURE SENSINGTX Ren add 6% tax 1 28 CELLS AERO ELECTRONICSRT 6 BOX 54J AUSTIN TX 78737512 288-3220 179pm 204 Model Aviation
Edition: Model Aviation - 1990/06
Page Numbers: 106, 107, 108, 202, 204
m RTICLESins toon floatj will reveir rvelo itlv diffeiarato off oint se oftenand decide models reasc muca ii strike Ui craft have standai di Mn e cran will w load-cam down rest Qac flJ NO OCR TEXT hat CG The Center-of-Gi WC The Wing Chord 2 positive SZ Stabilizer parallel Longitu4 LA may MT The Motor Thri FT The Float Top un ought ne floats ry slightly higi flying appro ers float ig top th idinal axis line o line winz baseline models aerocyr re accurately id ne airplar iN designers zero eline win [rfoil ot example set positive over sti nd power 0 mrs lea mneral refe cular plans few di water mu adinal axis li ser always S4 angle attac craft consistei Still ice line thrust line ie position floats vhats mosi measuring ly safe longit g zero zontal stabiii igh exact sding tr ases will selage layout zero Much Its normal stab may design re other cont1 o negin wi angle tha r flight t uecessarv gentle swith pr adjust model out use oats C2fl ifidence hon slightly titude over winches penalized 100 points occasionally caused pilot distance task fly diagonally across course final lap two avoid low pass over winches complaint heard about safety rules first imple mented World Champs F3B safety rules currently under consideration ClAM F3B Subcommittee expe rience gained years competition will certainly valuable feature RC Soaring World Cham pionships December 1989 Model Avia tion author Byron Blakeslee pictured sev eral models mentioned present article Floatplanes/Munn Continued page 108 0 top line floats held stabilizer zero line exactly level viewed side front end floats will slightly lower rear end front edge wing should cases slightly higher trailing edge flat-bot tomed Clark-Y-type airfoil some variation air foil position permissible since such airfoil can generate lift slightly negative angle attack Because know airplane will fly its horizontal stabilizer zero degrees airstream can feel confident being very close correct rigging angle theory float rides level on-step airplane will moving through airstream its normal flying attitude adding extra 0 angle have provided extra drag weight floats airplane should gen erate enough lift takeoff speed fly off water little no need elevator pro ceed gentle climb aircraft rest its floats av erage model will appear sitting slightly moderately tail-low because floats have greater displacement front step help counteract combined downward forces must withstandthat power ap plied well above considerable drag water rushing against forward section point pilots stop worrying about float rigging secure knowledge sheer power lots elevator will probably over come remaining minor inconsistencies ever other variables can affect floats per formance include float design itself floats response moving water smoothness finish position prop re spect float tip step CG cor rectly mated Only after conducting number flight tests can determine best rigging throttle advanced both pulling power engine low tail position will tend lift rear end floats toward level attitude no application eleva tor model should get on-step within 30 50 ft depending its power weight As does floats will produce considerably less spray particularly small spray rails have installed along forward bottom edges floats model will accelerate rapidly skims along water actually lifting off except brief skips due water surface tur bulence very slight application up elevator will get smoothly air pre ferred trim model gets on-step quickly lifts off water application up elevator shortly afterward wing operating slightly positive angle necessary step position Although shouldnt cause THE SUPERIOR GLOW PLUGS FOR GO FAST FLYERS ARE BACK! Puts sting engine Unique flat-wound spiral coil element high temperature glass-to-metal seal add up faster ignition increased RPM 1/2A GloBee plugs designed exclusively 049/051 Cox engines Ask new GB-5RX Speed Plug GB-5R Racing Plug GB-5P Sport Plug local dealer today unavailable locally write call Twinn-K collect pricing delivery information FREE GloBee Catalog MAKE THE GLOBEE / INDY CONNECTION Twinn-K Inc 10296 W Washington St Indianapolis IN 46231 Telephone 317-839-6579 FAX 317-839-8928 ing Span 81 Engine 9015 2cyc Wing Area 1100 sq 1218 4cyc Machine Cut Wood Kit including wire londing gear & wing 1aining hdwe VISA & MC accepted $120 Add 500 post & handling Add 300 COD Ohio residents add 60% tax free Catalog send SASE Air Flair1513-878-7487 PQ Box 2075 Foirborn Ohio 45324 serious worries small penalty paid aircraft will exhibit marked ten dency balloon instant touchdown especially done too high speed too steep angle too much elevator flaring will cause porpoising multiskip landings can slow aircraft substantially before touchdown danger tip stalls loss control might able live condition Still its best correct reducing difference angle between float top stabilizer zero line can done strut adjustment Lower rear end floats increments no % between tests until angle achieved requires just slight touch up elevator go very light step gentle climb Some experimenting needed since aircraft high-lift airfoil Clark Y will require much less change alignment will symmetrical near-symmetrical airfoil ar rive desired performance level aircraft has gotten on-step seems glued water often generating lots spray front requiring healthy dose up eleva tor lift off wing being held too nega tive angle attack produce adequate lift such case lower front end floats adjusting strut length increments about / less between tests Incidentally inaccu rate float-to-wing incidence alignment common rigging problem seen pilots seem content live probably cause pilots accustomed giving tricycle-geared ships shot up elevator rotate Common acceptable practice good float flying Several things can cause model plough sluggishly through water power ap plied flier holding too much up elevator forces rear end floats deeper water creating much drag airplane can get on-step frequent cause Reversed float rigging can also lead sluggish performance causes wing operate far too negative angle driving rear end floats water Positioning CG much too far behind float step another possible cause air craft hunkers down water Finally cul prit may simply insufficient power overcome lift-off failure First can change lower pitch prop try again Such prop produces thrust lower ward speeds may boost plane requires Second its sometimes possible break ploughing tendency brief shot down elevator will lift rear end floats Continued page 204 202 Model Aviation Hundreds cowls kits plans Strong lightweight one-piece construction Exact duplicates manufacturers original Also radial cowls wheelpants SendSlOOfor8-pg brocliureOrcall 703-890-60179 am-9 pm EDT phone orders information FIBERGLASS Box 530 Goodview VA 24095 F3B Tech/Edmonds Continued page 104 No654 Tamecat$1525 RO TrainerlspartSter 40150 2-stroke 48161 4-stroke power Wingspan 66 Styled like Navys F14 Four plan sheets No 655 Astrostar$800 FF AMA Class NB Gas plane spans 67 uses 3251350CC power No 656 XF13C$550 CL Profile 15 Carrier plane spans 27% No 193StIletto CL Stunt model McDonald winner 1976 19801982 PAl World Champo 6575 No 262 Creshmeeter CL Crash-proof trainer twn ninesi 5/30 35/40 power$ 125 No 310 1930 Fleet Biplane AC Spsrt Scale fnr 35/40 4-channel Wingspan 56 14 scale Two streets $ 625 No 314 Dnke II AC Ken Wftards flying heal 3-channel 15-power Fly land rernonablo gear $ 375 No 326 Taylor Cub AC Dne Snulls Schoolyard-Scale MOn 2-3 channel Spans 50 in.6 350 No 332 Zephyr RC Swat 2-channel glider hand-launch tow thennal slope soaring.$ 200 No 386 Lawer 200 tIC Sport Scale replica championship Aernhaitc flier Uses 40 power 4-5 channel Two sheets. 6 1075 No 447 112A VAlue America 110 OhI-limer ISA Tesocs model 049 glow 2-channelo.S 650 No 460 440 110 Shoalder-wing sport filer 4-cycle 40-one engine 4 channels.. $ 850 No 465 Eu Max II 110 Fon-fly sporlster 40-size enginen spans 52 Lightweight structure $ 798 No 533 Cesena C-37 RO Schoolyard Scale famoas SOs plane fnr 049110 power 2-ch spans 42 in $ StO No 539 Slmttar Sloujlotlon 15 110 Tailess flying wing 15 engines spans 60 ones 3-ch AC $ 550 oNo569Olectroetreak 110 Electric aerohafic plane spans 44 uses 05 raotsr $ 550 onNo 570Buwy Bee FF Pee Wee-SO plone fur 02 power spans 30 hon either sheet-Salon halt-up surfaces$ 400 0No 572TR-260 AC Sport Scale Aeruliatic plaae 4-sernhre 80/65 power spans 66 in$ 1100 o eJ No 576Serandlpinyl ndeor 828 record-holder spans 17A in$ 325 onNo 578Schwelzer 1-265 110 Qanrter-scale Sailplane spans 125 Twa plan sheets$ 1475 No 561Gee Bee Model Y AC Oulden Age Racer spans 72 14 scale 60 pswer Three plan sheets$ 1175 -No 566 Snapdragon AC Fan-fly/nportster 25130 engines spans 45 in.$ 600 CNo 586Marteh FtC Slope-Soaring Satptane spans 411n nsea 2 110 channelsS 425 C 0No 593Taylorcraft 110 Sport Scale Ightylane Solids standard 2-piecer clipped-wino air chow stunner Spans either 70 0 5815 30/40 two-stroke 40148 four-stroke engine Two plan sheets no docernentatlon $1000 0 No 595Sparrow 110 Sporlster ten 25 eeginen spans 43 in6650 oNo 596Coronet 150 FtC-Assist 3d-Timer enlarged 15015 spans 72 ones 40-she 4-stroku/30-SiZe 2-stroke$950 S598 0No 601NIckel 110 Sporloter r/aA engine 3110 channelo Spans 44 fl0No 603Sparrow Hawk P30 FF Competition ruSher-power plane wan 87 NaSa Spans SO in$225 No 607 Curtlee Seagull AC GlanS Scale hiptane spans 00 uses Qoadra/Zenesh power Three plan sheets mc $2400 No 609 Taperwlng AC rhA Pylon Racer spans 29 Plan plos nne parts template sheet 698 E 0 No 610 Protobype 110 Span hiplane spans 49 onen 45/2-cycle 80/4-cycle power S 850 No 612 NVCL Dragonfly CL ISA Corehat plane all-wend spans 24 Per reed-salon engine 200 No 614 Etectmotator 110 Electric sportuter 05 direct-drive motor spans 44 S 575 No 619 KeIth Alder R4 PP Scale Golden Age racer mhhor power spans 18 S 300 o ENo 620 GImlet 40 110 Spars/Pattern plane spans 60 40150 engine 2 sheets$ 1100 z noNo 632 QuIck P-SO PP Compafliton raSher-power P-SO-class plane spans SO in$ 325 C ClNo 623Hendereon Longeter AC Quarter-scalu 1933 itiroer spans 90A 4-stroke 40140 engine 3 plan sht no 6 1650 No624Keleher Lark 110 Quarter-wale honreholit spans 69 60/90 4-stroke power 2 plan sheets no mc$ 1100 No 626Sweepee FtC Sport/Pattero canards funeard-swept wing spoon 64 uses 40 power 2 plan sheets$1300 No 626Prime Cut FtC Sport/Aerehatic plane spans 9010 ones Quadra 35/40-size power Twa plan sheets$ 1300 No 629P518 Mustang CL Mostly-cardhoard Sport Scale craft spans 60 ones 30140 power Two plans sheets ne decS 1275 CNo 630OrigInal Ply Baby FtC Qfd-Timer spans 72 ones 19/25 2-cycle 40 4-cycle power 2 plan sheets$ 1150 No 632P-51H PP Lahomir Kootnys An-scale RoSher muriel spans 23 in$ 325 C noNo 633Once AC Slopo Soarer spans 75 ones twist-wing control Two-cS FtC XMTR Save electronic reisingS 675 N No 634 552C Heltdlver CL Preitle sport/Stueter spans 54 35/40 power$ 575 0 No 635 Gemblert PP Indoor Bostonlan ruSher-power cahin plane spans 15% in$ 200 no No 636 Keytwo AC Td-geared low-wing sportuter 20125 power spans 44 $ 575 E 0 No 637 A-S Shilke PP Compeititen plane AMA Classes 8 15123 power spoon 60 $ 675 o No 636 Owl Racer CL ikA Scale Racer 049 power spans 20 225 No 639 Skyvolt AC Tri-geared Electric nerehafic nportster 05/15 power spans 50i/ g No 640 BIrd Prey CL AMA Fast Corehat plane 30 power spsns 5304 In 5 550 C 0 No 641 UI Ole Rellabte AC Old-Timer sport flier spans 5004 ISA engines 5 -0No 642 SIp 89 CL PartIal plan updates deBots 40 sendon 35cc power Spans 2204 in$ 225 0No 643Nodule tIB PP SotOke flying wing COn power spans SO in$ 325 CNo 644Bellenca Columbia AC Schoolyard Scale 2 AC channels ihA engine Wingspan 46 in$ 575 onNo 645LaIrd Solution CL Profile Scale Siplane spans 30 25/35 power$ 575 0No 646Wtnter Hawk PP Rohher-pawer Coupe riCher competition plane spans 47 inS 375 No 647Con SpecIal CL Semlscale Siplane ISA engine spans 24 in$ 300 No 64$Curtles OC-2 PP Sinus Outdoor Gas Flying Scale Siplane ones electric power spans 24in HiLine Mini-fl motor$ 325 No 649Thlngamabob AC/CL Motireorie trainer 25 gas 05 electric power npaos Sun$ 475 No 65047/88 AC SpecIal AC Aerohaitc sport plane 40 power spans 6110 3 plan sheets$ 1075 oonNo 651Consortium AC Hand-Launch Hi-Start Glider spans 60 in6 850 anNo 652Der Fledermeus FtC Low-wing sport plane 20125 power spans 55 in$ 675 00No 653Avanti CL Profile Sport Scale canard hinfloer fur hon 049s spans 30 in$ 575 on- i C le numbers plans wish order best handling pease no incude meno n o o quests payment some other service plans order 193262310314326332386447 ~0 o 460465533539569570572576 C --578581586588593595598601 ~P;603607609610612614619620 622623624626628629630632 633634635636637638639640 oon641642643644645646647648 o a 650651652653654655656 no Plan price includes first class postage US delivery Air Mail over 300 miles 10 w- For orders non-US address lease add $250 br Air Mail oSta e handlin Ian Make check money order payable US funds draws US bank Model Aviation c/u AMA 1810 10 - Samuel Morse Dr Reston VA 22090 Please allow 3 6 weeks delivery Please print carefullyEnclosed $ _ NAME __________________________________________ AMA No _______________ STREET N CITY STATE __________________ ZIP______________ third way reduce drag allow better ac celeration carefulty rock aircraft ailerons lifting first other float free very touchy maneuver however experienced pilots shoutd attempt best approach seek assistance expe rienced float pilots can check rigging help necessary adjustments angle between top float 1 lifting surface wing has properly ad justed landings become remarkably easier After turning wind simply reduce power until have steady smooth descent Try avoid using elevator Its often useful point reduce power add touch ep trim lowering airspeed white maintaining same rate descent Just before touchdown takes practice determine exact timing aircraft can flare stightty very gentle touch stp elevatoror preferably slight addition power object touch water same relatively flat attitude plane sumed lift-off extra power touchdown helps prevent pt stowing caused water drag Reduce power gradually after touchdown obtain smooth transition taxi speed technique also ensures against dumping aircraft comes necessary abort takeoff ctose fly ing speed Once youve flown properly rigged floatplane - world wilt seem much friendtier happier place Its welt worth trouble get right Note same general testing technique can apptied amphibians well except rather adjusting strut length adjusts angle attack wing increasing angte shift center-of-gravity slightly forward reducing shift CG bit rear makes possible achieve atmost flying youre on-step attitude signif- icant use elevator Ultimate FOAM CUTTING WIRE Out performs music wire nichrome Pkg 8 Send $400 plus $225 shipping handling Warden Woodworke 14935 MarIe Warren Ml 48093 313294-0890 JEUZTS P K0UN Sq J 4 L LIi 1st US RIC Flight School Stop Crashing Start Learning CLASSES FILLING FAST Info pack $300 1st US RIC FLIGHT SCHOOL 521 S Sawyer Shawano WI 54166 7151 R2829R11 THEt PEAK DETECTOR Tim Abrens aa seen JAN 90 RCM LCD READOUTSASE FOR BROCHURE EASY HOOKUP ASTRO 132 & its CHARGERS repaid TEMPERATURE SENSINGTX Ren add 6% tax 1 28 CELLS AERO ELECTRONICSRT 6 BOX 54J AUSTIN TX 78737512 288-3220 179pm 204 Model Aviation