ping ri gr period ecificatios consider winch vinch s some del artciD ecm nnIr ir 0 . IC exte moma mUier e art ned th han whats b rs has cc well ws mi s work thatf Wor t some ol can kL Lmvs t German wt owner motor Sos mud Sf11 ml rofler does tim auso Belgium large motor edge up ther everyone possE Iglit 111W us West deed lung II d have blue line ting Ins k. f jul chani control ad conditio ad novel w pters inc ickly having new line Country United States West Germany Austria Great Britain Netherlands Belgium Switzerland turn 140150 Bosch 85100 165203 100 100 76 Bosch Bosch Bosch Lucas Bosch core con m Thats aided m V C g le mit p turna turnaroun of mc rnal tum d L 8 RU sing re U mold aver 120u mae molds uuluw ers ad Critic ci c -diani West dark oben nt Cieri iertrieb 8039 mans also Drum DIa mm 51127 33-40 plus adapters 30-80 4250 4565 50-60 25-100 gear hake liar 2Mo 1989 F flngC Gr460284 eterAu63270 isNeH020I9id i72245 286 W8280 Need270iu 2791397 Werner2401310 Roland1235 r Larry1410 pt Friedrich51flfl ichard Stew4270 3onestroo Henk1032701 rorp Espenr4-2/1014u gou Marital2401480 iWilfriedH020/10 al Dave sen KarstenHO mod2501490 Guy1470 soi-i 8/92501450 owski CP~ 9%2501380 Rich2048241 , Franca Milan245 ragg EddyIRG14l4oi Zdenek/92251405 Tadashi2801450 Miguel 260 1390 tip Iv uIl carudder conirilenca 1 aaynhivmtrlcai italy andes thIs drag signiflcar s IaTop speed ru LtCd18-second vsky Cze w winch m wrn measu r resistan values us informatioi Belohor es Oetween s data flownatff NO OCR TEXT shipping box ci fuselages Si wings h fact world-class F3] thin RoIf Girsbe very popular change some competitors sections withstanu u winches arry Jolly flew Hans net 89T Larry put flights etition several 01 rounds Con world-class F3B m commercially Tragfiachenbau er StraBe 12 E West Germany said think better slit hes very little writing whether oj nore experience e 89T longer orner competit mc eithei large mod nt insj dici moaeit tuninn othei may chast -pieceFirst -madeanal] cklngwith ar-perfect worki offered n first d vel air definite W rhaps theyre competita sta automot Jewel write Cervene Czechoslovaicia Czechoslovakian ships Ellipse three- ice slightly Lful West Ge tures wing up LV Muller r Czechoslova Ellipse ye re however g models esen fine gc I0 uch indeveloped sten design~ xl the moldinj F3B machine hours nto making 40 hours pet Its kind c v for wh truction igh au-i theyi aevelop di onder such m hase rangin d dollars ost developmc id tlng see tag drag ou nted servos fi ct-drive link Some mod mnkages breeze Oni ver linkaj size down slovakian team dcv away wit nylon line 1 nylofl tube screwed FU Krzyszror Ja skich 8/102 modelers drag sed rudder ill cables es al"t ibles short Fly McDaniel Power New Solid State On-Board Glow-Plug Drivers Now can drive 1 2 glow plugs efficiently automatically new McDaniel On-Board Glow-Plug Drivers engine 2 4 stroke glow has 1 2 cylinders Model 471 472 On-Board Glow-Plug Driver will ease jobs starting maintaining idle during taxiing power down flight maneuvers FEATURES INCLUDE Servo Reversing Optically Coupled Circuitry No RFI Automatic Shutdown Via TX RX Connector Plug Battery Pack Remote Glow Plug Indicator Panels Available Separately Battery Pack AC Charger NOT Included Available Separately See Local Hobby Dealer Contact McDaniel R/C Inc 1654 Crofton Blvd Suite 4 Crofton MD 21114 Visa MC accepted Phone 301721-6303 301721-6306 unified Nearly models used aile rons elevator rudder flaps very few having additional spoilers Com puter radios have become must mixing camber changing Most observed using crow configuration called butterfly Europe landing Europeans Americans used dif ferent styles transmitters European style use tray neckstrap allow ing pilots easily neatly install rain covers tray American way course employ hand-held transmitters Stick mode also showed cultural varia tion pilots using Mode Mode H popular America Oth ers using nonstandard stick configura tions various sorts comparing outline design top five placing models find following 1 Three models straight dihe dral wing Two wings threepiece flat center section 2 Four models wings straight trailing edges tapered leading edges reverse 3 Three models stepped taper wings two straight taper 4 Only Epsilon equipped Schuemann-like wing planform 5 Three models T-tails two con ventional tails 6 Four models slip-on nose cones canopy radio access point time no single oufline ap pears hold winning formula F3B models arent total look-alikes case some categories competition De signs show different mixes various features components according builders differing views what works best makes interesting event French Aero Club did excellent job organizing championships troduced some new ideas well usual four discrete audio signals distance task visual light indicator added case confusion light flashed several seconds after base cross ing give team members chance double-check signal organizers also provided individual lap flip cards see allowed teams check laps instantly also see what competition doing idea very popular contestants will likely become must future World Champs Another new idea no landing area clearly marked red tape 10 meters directly behind winches full length winch setup area Any model landing area penalized 100 points duration task winches set up once left place until completion task common prac tice USA F3B contests no landing area quite long Likewise model flying less three-meters al Continued page 202 104 Model Aviation D&J 900 Lucy ELECTRONICS Road ll Ml 48843 5462644 service makes R/C equipment utilizing state art electronics Spectrum Analyzer Precision Frequency Measuring equipment True 1991 Standards endorsed AMA & RCMA Transmitter Slicker Program FCC LicensedSpeed Control RepairsQuality Service Transmitter Checks Only includes GOLD/SILVER sticker $400 Transmitter & Receiver Calibration $2400 Frequency Upgrades & Changes crystals extra $2900 Bench Time Repairs per hour S25OO Transmitters service will receive AMA/RCMA sticker ADD $500 FOR SHIPPING & INSURANCE TURN AROUND TIME TWO WEEKS OR LESSI ____ usVISA/MASTERCARD ACCEPTEDCOD THE GUARDIAN ANGEL m WATCHES OVER YOUR PLANE LIKE NOTHING ELSE IN THIS WORLD CRASH PREVENTION SYSTEM rides aircraft performing functions Worlds First Audible ESV Battery Monitor Simple Battery Cyder Audible Power Indicator Lost Aircraft Finder Range Tester Interference Monitor supported PCM Radio Systems PROTECT YOUR INVESTMENT AND FLY WITH COMPLETE CONFIDENCE Unlike other simple monitoring devices ThE GUARDIAN ANGEL protects losing aircraft six different ways unique audible voltmeter actually lets hear condition Ni-Cd batteries Continuous beeps spaced about 20 seconds apact get closer closer batteries discharge occur faster beep per second DONT FLY l No LEDs meters remember look Much better designs warn its too late l ThE GUARDIAN ANGEL also simple battery cycler measutes battery capacity Its interference monitot signaling channel clear Use find lost aircraft weeds As range tester accurately tells youre out range Finally slow constant beeps serve remind receiver No dead batteries get field l Easily connects unused servo channel between servo receiver Units shipped tinned leads add $800 Futaba connectors specify model ,ih THE GUARDIAN ANGEL s ii LOW POWER WEIGHS 06 OZ SMALL SIZE RELIABLE ACCURATE EASY TO INSTALL 30 day money back guarantee l ORDER DIRECT List Price S3995 Special Introductory Price $2995 ——plus $300 Postage HandlingFlorida residents add 6% sales tax Write cull information Dealer & distributor inquiries welcome Ti. ra Microsystems Engineering Inc 813 968-9510 PO Box 340608 Tampa Florida 33694 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
Edition: Model Aviation - 1990/06
Page Numbers: 95, 96, 97, 98, 99, 100, 104, 202
ping ri gr period ecificatios consider winch vinch s some del artciD ecm nnIr ir 0 . IC exte moma mUier e art ned th han whats b rs has cc well ws mi s work thatf Wor t some ol can kL Lmvs t German wt owner motor Sos mud Sf11 ml rofler does tim auso Belgium large motor edge up ther everyone possE Iglit 111W us West deed lung II d have blue line ting Ins k. f jul chani control ad conditio ad novel w pters inc ickly having new line Country United States West Germany Austria Great Britain Netherlands Belgium Switzerland turn 140150 Bosch 85100 165203 100 100 76 Bosch Bosch Bosch Lucas Bosch core con m Thats aided m V C g le mit p turna turnaroun of mc rnal tum d L 8 RU sing re U mold aver 120u mae molds uuluw ers ad Critic ci c -diani West dark oben nt Cieri iertrieb 8039 mans also Drum DIa mm 51127 33-40 plus adapters 30-80 4250 4565 50-60 25-100 gear hake liar 2Mo 1989 F flngC Gr460284 eterAu63270 isNeH020I9id i72245 286 W8280 Need270iu 2791397 Werner2401310 Roland1235 r Larry1410 pt Friedrich51flfl ichard Stew4270 3onestroo Henk1032701 rorp Espenr4-2/1014u gou Marital2401480 iWilfriedH020/10 al Dave sen KarstenHO mod2501490 Guy1470 soi-i 8/92501450 owski CP~ 9%2501380 Rich2048241 , Franca Milan245 ragg EddyIRG14l4oi Zdenek/92251405 Tadashi2801450 Miguel 260 1390 tip Iv uIl carudder conirilenca 1 aaynhivmtrlcai italy andes thIs drag signiflcar s IaTop speed ru LtCd18-second vsky Cze w winch m wrn measu r resistan values us informatioi Belohor es Oetween s data flownatff NO OCR TEXT shipping box ci fuselages Si wings h fact world-class F3] thin RoIf Girsbe very popular change some competitors sections withstanu u winches arry Jolly flew Hans net 89T Larry put flights etition several 01 rounds Con world-class F3B m commercially Tragfiachenbau er StraBe 12 E West Germany said think better slit hes very little writing whether oj nore experience e 89T longer orner competit mc eithei large mod nt insj dici moaeit tuninn othei may chast -pieceFirst -madeanal] cklngwith ar-perfect worki offered n first d vel air definite W rhaps theyre competita sta automot Jewel write Cervene Czechoslovaicia Czechoslovakian ships Ellipse three- ice slightly Lful West Ge tures wing up LV Muller r Czechoslova Ellipse ye re however g models esen fine gc I0 uch indeveloped sten design~ xl the moldinj F3B machine hours nto making 40 hours pet Its kind c v for wh truction igh au-i theyi aevelop di onder such m hase rangin d dollars ost developmc id tlng see tag drag ou nted servos fi ct-drive link Some mod mnkages breeze Oni ver linkaj size down slovakian team dcv away wit nylon line 1 nylofl tube screwed FU Krzyszror Ja skich 8/102 modelers drag sed rudder ill cables es al"t ibles short Fly McDaniel Power New Solid State On-Board Glow-Plug Drivers Now can drive 1 2 glow plugs efficiently automatically new McDaniel On-Board Glow-Plug Drivers engine 2 4 stroke glow has 1 2 cylinders Model 471 472 On-Board Glow-Plug Driver will ease jobs starting maintaining idle during taxiing power down flight maneuvers FEATURES INCLUDE Servo Reversing Optically Coupled Circuitry No RFI Automatic Shutdown Via TX RX Connector Plug Battery Pack Remote Glow Plug Indicator Panels Available Separately Battery Pack AC Charger NOT Included Available Separately See Local Hobby Dealer Contact McDaniel R/C Inc 1654 Crofton Blvd Suite 4 Crofton MD 21114 Visa MC accepted Phone 301721-6303 301721-6306 unified Nearly models used aile rons elevator rudder flaps very few having additional spoilers Com puter radios have become must mixing camber changing Most observed using crow configuration called butterfly Europe landing Europeans Americans used dif ferent styles transmitters European style use tray neckstrap allow ing pilots easily neatly install rain covers tray American way course employ hand-held transmitters Stick mode also showed cultural varia tion pilots using Mode Mode H popular America Oth ers using nonstandard stick configura tions various sorts comparing outline design top five placing models find following 1 Three models straight dihe dral wing Two wings threepiece flat center section 2 Four models wings straight trailing edges tapered leading edges reverse 3 Three models stepped taper wings two straight taper 4 Only Epsilon equipped Schuemann-like wing planform 5 Three models T-tails two con ventional tails 6 Four models slip-on nose cones canopy radio access point time no single oufline ap pears hold winning formula F3B models arent total look-alikes case some categories competition De signs show different mixes various features components according builders differing views what works best makes interesting event French Aero Club did excellent job organizing championships troduced some new ideas well usual four discrete audio signals distance task visual light indicator added case confusion light flashed several seconds after base cross ing give team members chance double-check signal organizers also provided individual lap flip cards see allowed teams check laps instantly also see what competition doing idea very popular contestants will likely become must future World Champs Another new idea no landing area clearly marked red tape 10 meters directly behind winches full length winch setup area Any model landing area penalized 100 points duration task winches set up once left place until completion task common prac tice USA F3B contests no landing area quite long Likewise model flying less three-meters al Continued page 202 104 Model Aviation D&J 900 Lucy ELECTRONICS Road ll Ml 48843 5462644 service makes R/C equipment utilizing state art electronics Spectrum Analyzer Precision Frequency Measuring equipment True 1991 Standards endorsed AMA & RCMA Transmitter Slicker Program FCC LicensedSpeed Control RepairsQuality Service Transmitter Checks Only includes GOLD/SILVER sticker $400 Transmitter & Receiver Calibration $2400 Frequency Upgrades & Changes crystals extra $2900 Bench Time Repairs per hour S25OO Transmitters service will receive AMA/RCMA sticker ADD $500 FOR SHIPPING & INSURANCE TURN AROUND TIME TWO WEEKS OR LESSI ____ usVISA/MASTERCARD ACCEPTEDCOD THE GUARDIAN ANGEL m WATCHES OVER YOUR PLANE LIKE NOTHING ELSE IN THIS WORLD CRASH PREVENTION SYSTEM rides aircraft performing functions Worlds First Audible ESV Battery Monitor Simple Battery Cyder Audible Power Indicator Lost Aircraft Finder Range Tester Interference Monitor supported PCM Radio Systems PROTECT YOUR INVESTMENT AND FLY WITH COMPLETE CONFIDENCE Unlike other simple monitoring devices ThE GUARDIAN ANGEL protects losing aircraft six different ways unique audible voltmeter actually lets hear condition Ni-Cd batteries Continuous beeps spaced about 20 seconds apact get closer closer batteries discharge occur faster beep per second DONT FLY l No LEDs meters remember look Much better designs warn its too late l ThE GUARDIAN ANGEL also simple battery cycler measutes battery capacity Its interference monitot signaling channel clear Use find lost aircraft weeds As range tester accurately tells youre out range Finally slow constant beeps serve remind receiver No dead batteries get field l Easily connects unused servo channel between servo receiver Units shipped tinned leads add $800 Futaba connectors specify model ,ih THE GUARDIAN ANGEL s ii LOW POWER WEIGHS 06 OZ SMALL SIZE RELIABLE ACCURATE EASY TO INSTALL 30 day money back guarantee l ORDER DIRECT List Price S3995 Special Introductory Price $2995 ——plus $300 Postage HandlingFlorida residents add 6% sales tax Write cull information Dealer & distributor inquiries welcome Ti. ra Microsystems Engineering Inc 813 968-9510 PO Box 340608 Tampa Florida 33694 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
Edition: Model Aviation - 1990/06
Page Numbers: 95, 96, 97, 98, 99, 100, 104, 202
ping ri gr period ecificatios consider winch vinch s some del artciD ecm nnIr ir 0 . IC exte moma mUier e art ned th han whats b rs has cc well ws mi s work thatf Wor t some ol can kL Lmvs t German wt owner motor Sos mud Sf11 ml rofler does tim auso Belgium large motor edge up ther everyone possE Iglit 111W us West deed lung II d have blue line ting Ins k. f jul chani control ad conditio ad novel w pters inc ickly having new line Country United States West Germany Austria Great Britain Netherlands Belgium Switzerland turn 140150 Bosch 85100 165203 100 100 76 Bosch Bosch Bosch Lucas Bosch core con m Thats aided m V C g le mit p turna turnaroun of mc rnal tum d L 8 RU sing re U mold aver 120u mae molds uuluw ers ad Critic ci c -diani West dark oben nt Cieri iertrieb 8039 mans also Drum DIa mm 51127 33-40 plus adapters 30-80 4250 4565 50-60 25-100 gear hake liar 2Mo 1989 F flngC Gr460284 eterAu63270 isNeH020I9id i72245 286 W8280 Need270iu 2791397 Werner2401310 Roland1235 r Larry1410 pt Friedrich51flfl ichard Stew4270 3onestroo Henk1032701 rorp Espenr4-2/1014u gou Marital2401480 iWilfriedH020/10 al Dave sen KarstenHO mod2501490 Guy1470 soi-i 8/92501450 owski CP~ 9%2501380 Rich2048241 , Franca Milan245 ragg EddyIRG14l4oi Zdenek/92251405 Tadashi2801450 Miguel 260 1390 tip Iv uIl carudder conirilenca 1 aaynhivmtrlcai italy andes thIs drag signiflcar s IaTop speed ru LtCd18-second vsky Cze w winch m wrn measu r resistan values us informatioi Belohor es Oetween s data flownatff NO OCR TEXT shipping box ci fuselages Si wings h fact world-class F3] thin RoIf Girsbe very popular change some competitors sections withstanu u winches arry Jolly flew Hans net 89T Larry put flights etition several 01 rounds Con world-class F3B m commercially Tragfiachenbau er StraBe 12 E West Germany said think better slit hes very little writing whether oj nore experience e 89T longer orner competit mc eithei large mod nt insj dici moaeit tuninn othei may chast -pieceFirst -madeanal] cklngwith ar-perfect worki offered n first d vel air definite W rhaps theyre competita sta automot Jewel write Cervene Czechoslovaicia Czechoslovakian ships Ellipse three- ice slightly Lful West Ge tures wing up LV Muller r Czechoslova Ellipse ye re however g models esen fine gc I0 uch indeveloped sten design~ xl the moldinj F3B machine hours nto making 40 hours pet Its kind c v for wh truction igh au-i theyi aevelop di onder such m hase rangin d dollars ost developmc id tlng see tag drag ou nted servos fi ct-drive link Some mod mnkages breeze Oni ver linkaj size down slovakian team dcv away wit nylon line 1 nylofl tube screwed FU Krzyszror Ja skich 8/102 modelers drag sed rudder ill cables es al"t ibles short Fly McDaniel Power New Solid State On-Board Glow-Plug Drivers Now can drive 1 2 glow plugs efficiently automatically new McDaniel On-Board Glow-Plug Drivers engine 2 4 stroke glow has 1 2 cylinders Model 471 472 On-Board Glow-Plug Driver will ease jobs starting maintaining idle during taxiing power down flight maneuvers FEATURES INCLUDE Servo Reversing Optically Coupled Circuitry No RFI Automatic Shutdown Via TX RX Connector Plug Battery Pack Remote Glow Plug Indicator Panels Available Separately Battery Pack AC Charger NOT Included Available Separately See Local Hobby Dealer Contact McDaniel R/C Inc 1654 Crofton Blvd Suite 4 Crofton MD 21114 Visa MC accepted Phone 301721-6303 301721-6306 unified Nearly models used aile rons elevator rudder flaps very few having additional spoilers Com puter radios have become must mixing camber changing Most observed using crow configuration called butterfly Europe landing Europeans Americans used dif ferent styles transmitters European style use tray neckstrap allow ing pilots easily neatly install rain covers tray American way course employ hand-held transmitters Stick mode also showed cultural varia tion pilots using Mode Mode H popular America Oth ers using nonstandard stick configura tions various sorts comparing outline design top five placing models find following 1 Three models straight dihe dral wing Two wings threepiece flat center section 2 Four models wings straight trailing edges tapered leading edges reverse 3 Three models stepped taper wings two straight taper 4 Only Epsilon equipped Schuemann-like wing planform 5 Three models T-tails two con ventional tails 6 Four models slip-on nose cones canopy radio access point time no single oufline ap pears hold winning formula F3B models arent total look-alikes case some categories competition De signs show different mixes various features components according builders differing views what works best makes interesting event French Aero Club did excellent job organizing championships troduced some new ideas well usual four discrete audio signals distance task visual light indicator added case confusion light flashed several seconds after base cross ing give team members chance double-check signal organizers also provided individual lap flip cards see allowed teams check laps instantly also see what competition doing idea very popular contestants will likely become must future World Champs Another new idea no landing area clearly marked red tape 10 meters directly behind winches full length winch setup area Any model landing area penalized 100 points duration task winches set up once left place until completion task common prac tice USA F3B contests no landing area quite long Likewise model flying less three-meters al Continued page 202 104 Model Aviation D&J 900 Lucy ELECTRONICS Road ll Ml 48843 5462644 service makes R/C equipment utilizing state art electronics Spectrum Analyzer Precision Frequency Measuring equipment True 1991 Standards endorsed AMA & RCMA Transmitter Slicker Program FCC LicensedSpeed Control RepairsQuality Service Transmitter Checks Only includes GOLD/SILVER sticker $400 Transmitter & Receiver Calibration $2400 Frequency Upgrades & Changes crystals extra $2900 Bench Time Repairs per hour S25OO Transmitters service will receive AMA/RCMA sticker ADD $500 FOR SHIPPING & INSURANCE TURN AROUND TIME TWO WEEKS OR LESSI ____ usVISA/MASTERCARD ACCEPTEDCOD THE GUARDIAN ANGEL m WATCHES OVER YOUR PLANE LIKE NOTHING ELSE IN THIS WORLD CRASH PREVENTION SYSTEM rides aircraft performing functions Worlds First Audible ESV Battery Monitor Simple Battery Cyder Audible Power Indicator Lost Aircraft Finder Range Tester Interference Monitor supported PCM Radio Systems PROTECT YOUR INVESTMENT AND FLY WITH COMPLETE CONFIDENCE Unlike other simple monitoring devices ThE GUARDIAN ANGEL protects losing aircraft six different ways unique audible voltmeter actually lets hear condition Ni-Cd batteries Continuous beeps spaced about 20 seconds apact get closer closer batteries discharge occur faster beep per second DONT FLY l No LEDs meters remember look Much better designs warn its too late l ThE GUARDIAN ANGEL also simple battery cycler measutes battery capacity Its interference monitot signaling channel clear Use find lost aircraft weeds As range tester accurately tells youre out range Finally slow constant beeps serve remind receiver No dead batteries get field l Easily connects unused servo channel between servo receiver Units shipped tinned leads add $800 Futaba connectors specify model ,ih THE GUARDIAN ANGEL s ii LOW POWER WEIGHS 06 OZ SMALL SIZE RELIABLE ACCURATE EASY TO INSTALL 30 day money back guarantee l ORDER DIRECT List Price S3995 Special Introductory Price $2995 ——plus $300 Postage HandlingFlorida residents add 6% sales tax Write cull information Dealer & distributor inquiries welcome Ti. ra Microsystems Engineering Inc 813 968-9510 PO Box 340608 Tampa Florida 33694 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
Edition: Model Aviation - 1990/06
Page Numbers: 95, 96, 97, 98, 99, 100, 104, 202
ping ri gr period ecificatios consider winch vinch s some del artciD ecm nnIr ir 0 . IC exte moma mUier e art ned th han whats b rs has cc well ws mi s work thatf Wor t some ol can kL Lmvs t German wt owner motor Sos mud Sf11 ml rofler does tim auso Belgium large motor edge up ther everyone possE Iglit 111W us West deed lung II d have blue line ting Ins k. f jul chani control ad conditio ad novel w pters inc ickly having new line Country United States West Germany Austria Great Britain Netherlands Belgium Switzerland turn 140150 Bosch 85100 165203 100 100 76 Bosch Bosch Bosch Lucas Bosch core con m Thats aided m V C g le mit p turna turnaroun of mc rnal tum d L 8 RU sing re U mold aver 120u mae molds uuluw ers ad Critic ci c -diani West dark oben nt Cieri iertrieb 8039 mans also Drum DIa mm 51127 33-40 plus adapters 30-80 4250 4565 50-60 25-100 gear hake liar 2Mo 1989 F flngC Gr460284 eterAu63270 isNeH020I9id i72245 286 W8280 Need270iu 2791397 Werner2401310 Roland1235 r Larry1410 pt Friedrich51flfl ichard Stew4270 3onestroo Henk1032701 rorp Espenr4-2/1014u gou Marital2401480 iWilfriedH020/10 al Dave sen KarstenHO mod2501490 Guy1470 soi-i 8/92501450 owski CP~ 9%2501380 Rich2048241 , Franca Milan245 ragg EddyIRG14l4oi Zdenek/92251405 Tadashi2801450 Miguel 260 1390 tip Iv uIl carudder conirilenca 1 aaynhivmtrlcai italy andes thIs drag signiflcar s IaTop speed ru LtCd18-second vsky Cze w winch m wrn measu r resistan values us informatioi Belohor es Oetween s data flownatff NO OCR TEXT shipping box ci fuselages Si wings h fact world-class F3] thin RoIf Girsbe very popular change some competitors sections withstanu u winches arry Jolly flew Hans net 89T Larry put flights etition several 01 rounds Con world-class F3B m commercially Tragfiachenbau er StraBe 12 E West Germany said think better slit hes very little writing whether oj nore experience e 89T longer orner competit mc eithei large mod nt insj dici moaeit tuninn othei may chast -pieceFirst -madeanal] cklngwith ar-perfect worki offered n first d vel air definite W rhaps theyre competita sta automot Jewel write Cervene Czechoslovaicia Czechoslovakian ships Ellipse three- ice slightly Lful West Ge tures wing up LV Muller r Czechoslova Ellipse ye re however g models esen fine gc I0 uch indeveloped sten design~ xl the moldinj F3B machine hours nto making 40 hours pet Its kind c v for wh truction igh au-i theyi aevelop di onder such m hase rangin d dollars ost developmc id tlng see tag drag ou nted servos fi ct-drive link Some mod mnkages breeze Oni ver linkaj size down slovakian team dcv away wit nylon line 1 nylofl tube screwed FU Krzyszror Ja skich 8/102 modelers drag sed rudder ill cables es al"t ibles short Fly McDaniel Power New Solid State On-Board Glow-Plug Drivers Now can drive 1 2 glow plugs efficiently automatically new McDaniel On-Board Glow-Plug Drivers engine 2 4 stroke glow has 1 2 cylinders Model 471 472 On-Board Glow-Plug Driver will ease jobs starting maintaining idle during taxiing power down flight maneuvers FEATURES INCLUDE Servo Reversing Optically Coupled Circuitry No RFI Automatic Shutdown Via TX RX Connector Plug Battery Pack Remote Glow Plug Indicator Panels Available Separately Battery Pack AC Charger NOT Included Available Separately See Local Hobby Dealer Contact McDaniel R/C Inc 1654 Crofton Blvd Suite 4 Crofton MD 21114 Visa MC accepted Phone 301721-6303 301721-6306 unified Nearly models used aile rons elevator rudder flaps very few having additional spoilers Com puter radios have become must mixing camber changing Most observed using crow configuration called butterfly Europe landing Europeans Americans used dif ferent styles transmitters European style use tray neckstrap allow ing pilots easily neatly install rain covers tray American way course employ hand-held transmitters Stick mode also showed cultural varia tion pilots using Mode Mode H popular America Oth ers using nonstandard stick configura tions various sorts comparing outline design top five placing models find following 1 Three models straight dihe dral wing Two wings threepiece flat center section 2 Four models wings straight trailing edges tapered leading edges reverse 3 Three models stepped taper wings two straight taper 4 Only Epsilon equipped Schuemann-like wing planform 5 Three models T-tails two con ventional tails 6 Four models slip-on nose cones canopy radio access point time no single oufline ap pears hold winning formula F3B models arent total look-alikes case some categories competition De signs show different mixes various features components according builders differing views what works best makes interesting event French Aero Club did excellent job organizing championships troduced some new ideas well usual four discrete audio signals distance task visual light indicator added case confusion light flashed several seconds after base cross ing give team members chance double-check signal organizers also provided individual lap flip cards see allowed teams check laps instantly also see what competition doing idea very popular contestants will likely become must future World Champs Another new idea no landing area clearly marked red tape 10 meters directly behind winches full length winch setup area Any model landing area penalized 100 points duration task winches set up once left place until completion task common prac tice USA F3B contests no landing area quite long Likewise model flying less three-meters al Continued page 202 104 Model Aviation D&J 900 Lucy ELECTRONICS Road ll Ml 48843 5462644 service makes R/C equipment utilizing state art electronics Spectrum Analyzer Precision Frequency Measuring equipment True 1991 Standards endorsed AMA & RCMA Transmitter Slicker Program FCC LicensedSpeed Control RepairsQuality Service Transmitter Checks Only includes GOLD/SILVER sticker $400 Transmitter & Receiver Calibration $2400 Frequency Upgrades & Changes crystals extra $2900 Bench Time Repairs per hour S25OO Transmitters service will receive AMA/RCMA sticker ADD $500 FOR SHIPPING & INSURANCE TURN AROUND TIME TWO WEEKS OR LESSI ____ usVISA/MASTERCARD ACCEPTEDCOD THE GUARDIAN ANGEL m WATCHES OVER YOUR PLANE LIKE NOTHING ELSE IN THIS WORLD CRASH PREVENTION SYSTEM rides aircraft performing functions Worlds First Audible ESV Battery Monitor Simple Battery Cyder Audible Power Indicator Lost Aircraft Finder Range Tester Interference Monitor supported PCM Radio Systems PROTECT YOUR INVESTMENT AND FLY WITH COMPLETE CONFIDENCE Unlike other simple monitoring devices ThE GUARDIAN ANGEL protects losing aircraft six different ways unique audible voltmeter actually lets hear condition Ni-Cd batteries Continuous beeps spaced about 20 seconds apact get closer closer batteries discharge occur faster beep per second DONT FLY l No LEDs meters remember look Much better designs warn its too late l ThE GUARDIAN ANGEL also simple battery cycler measutes battery capacity Its interference monitot signaling channel clear Use find lost aircraft weeds As range tester accurately tells youre out range Finally slow constant beeps serve remind receiver No dead batteries get field l Easily connects unused servo channel between servo receiver Units shipped tinned leads add $800 Futaba connectors specify model ,ih THE GUARDIAN ANGEL s ii LOW POWER WEIGHS 06 OZ SMALL SIZE RELIABLE ACCURATE EASY TO INSTALL 30 day money back guarantee l ORDER DIRECT List Price S3995 Special Introductory Price $2995 ——plus $300 Postage HandlingFlorida residents add 6% sales tax Write cull information Dealer & distributor inquiries welcome Ti. ra Microsystems Engineering Inc 813 968-9510 PO Box 340608 Tampa Florida 33694 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
Edition: Model Aviation - 1990/06
Page Numbers: 95, 96, 97, 98, 99, 100, 104, 202
ping ri gr period ecificatios consider winch vinch s some del artciD ecm nnIr ir 0 . IC exte moma mUier e art ned th han whats b rs has cc well ws mi s work thatf Wor t some ol can kL Lmvs t German wt owner motor Sos mud Sf11 ml rofler does tim auso Belgium large motor edge up ther everyone possE Iglit 111W us West deed lung II d have blue line ting Ins k. f jul chani control ad conditio ad novel w pters inc ickly having new line Country United States West Germany Austria Great Britain Netherlands Belgium Switzerland turn 140150 Bosch 85100 165203 100 100 76 Bosch Bosch Bosch Lucas Bosch core con m Thats aided m V C g le mit p turna turnaroun of mc rnal tum d L 8 RU sing re U mold aver 120u mae molds uuluw ers ad Critic ci c -diani West dark oben nt Cieri iertrieb 8039 mans also Drum DIa mm 51127 33-40 plus adapters 30-80 4250 4565 50-60 25-100 gear hake liar 2Mo 1989 F flngC Gr460284 eterAu63270 isNeH020I9id i72245 286 W8280 Need270iu 2791397 Werner2401310 Roland1235 r Larry1410 pt Friedrich51flfl ichard Stew4270 3onestroo Henk1032701 rorp Espenr4-2/1014u gou Marital2401480 iWilfriedH020/10 al Dave sen KarstenHO mod2501490 Guy1470 soi-i 8/92501450 owski CP~ 9%2501380 Rich2048241 , Franca Milan245 ragg EddyIRG14l4oi Zdenek/92251405 Tadashi2801450 Miguel 260 1390 tip Iv uIl carudder conirilenca 1 aaynhivmtrlcai italy andes thIs drag signiflcar s IaTop speed ru LtCd18-second vsky Cze w winch m wrn measu r resistan values us informatioi Belohor es Oetween s data flownatff NO OCR TEXT shipping box ci fuselages Si wings h fact world-class F3] thin RoIf Girsbe very popular change some competitors sections withstanu u winches arry Jolly flew Hans net 89T Larry put flights etition several 01 rounds Con world-class F3B m commercially Tragfiachenbau er StraBe 12 E West Germany said think better slit hes very little writing whether oj nore experience e 89T longer orner competit mc eithei large mod nt insj dici moaeit tuninn othei may chast -pieceFirst -madeanal] cklngwith ar-perfect worki offered n first d vel air definite W rhaps theyre competita sta automot Jewel write Cervene Czechoslovaicia Czechoslovakian ships Ellipse three- ice slightly Lful West Ge tures wing up LV Muller r Czechoslova Ellipse ye re however g models esen fine gc I0 uch indeveloped sten design~ xl the moldinj F3B machine hours nto making 40 hours pet Its kind c v for wh truction igh au-i theyi aevelop di onder such m hase rangin d dollars ost developmc id tlng see tag drag ou nted servos fi ct-drive link Some mod mnkages breeze Oni ver linkaj size down slovakian team dcv away wit nylon line 1 nylofl tube screwed FU Krzyszror Ja skich 8/102 modelers drag sed rudder ill cables es al"t ibles short Fly McDaniel Power New Solid State On-Board Glow-Plug Drivers Now can drive 1 2 glow plugs efficiently automatically new McDaniel On-Board Glow-Plug Drivers engine 2 4 stroke glow has 1 2 cylinders Model 471 472 On-Board Glow-Plug Driver will ease jobs starting maintaining idle during taxiing power down flight maneuvers FEATURES INCLUDE Servo Reversing Optically Coupled Circuitry No RFI Automatic Shutdown Via TX RX Connector Plug Battery Pack Remote Glow Plug Indicator Panels Available Separately Battery Pack AC Charger NOT Included Available Separately See Local Hobby Dealer Contact McDaniel R/C Inc 1654 Crofton Blvd Suite 4 Crofton MD 21114 Visa MC accepted Phone 301721-6303 301721-6306 unified Nearly models used aile rons elevator rudder flaps very few having additional spoilers Com puter radios have become must mixing camber changing Most observed using crow configuration called butterfly Europe landing Europeans Americans used dif ferent styles transmitters European style use tray neckstrap allow ing pilots easily neatly install rain covers tray American way course employ hand-held transmitters Stick mode also showed cultural varia tion pilots using Mode Mode H popular America Oth ers using nonstandard stick configura tions various sorts comparing outline design top five placing models find following 1 Three models straight dihe dral wing Two wings threepiece flat center section 2 Four models wings straight trailing edges tapered leading edges reverse 3 Three models stepped taper wings two straight taper 4 Only Epsilon equipped Schuemann-like wing planform 5 Three models T-tails two con ventional tails 6 Four models slip-on nose cones canopy radio access point time no single oufline ap pears hold winning formula F3B models arent total look-alikes case some categories competition De signs show different mixes various features components according builders differing views what works best makes interesting event French Aero Club did excellent job organizing championships troduced some new ideas well usual four discrete audio signals distance task visual light indicator added case confusion light flashed several seconds after base cross ing give team members chance double-check signal organizers also provided individual lap flip cards see allowed teams check laps instantly also see what competition doing idea very popular contestants will likely become must future World Champs Another new idea no landing area clearly marked red tape 10 meters directly behind winches full length winch setup area Any model landing area penalized 100 points duration task winches set up once left place until completion task common prac tice USA F3B contests no landing area quite long Likewise model flying less three-meters al Continued page 202 104 Model Aviation D&J 900 Lucy ELECTRONICS Road ll Ml 48843 5462644 service makes R/C equipment utilizing state art electronics Spectrum Analyzer Precision Frequency Measuring equipment True 1991 Standards endorsed AMA & RCMA Transmitter Slicker Program FCC LicensedSpeed Control RepairsQuality Service Transmitter Checks Only includes GOLD/SILVER sticker $400 Transmitter & Receiver Calibration $2400 Frequency Upgrades & Changes crystals extra $2900 Bench Time Repairs per hour S25OO Transmitters service will receive AMA/RCMA sticker ADD $500 FOR SHIPPING & INSURANCE TURN AROUND TIME TWO WEEKS OR LESSI ____ usVISA/MASTERCARD ACCEPTEDCOD THE GUARDIAN ANGEL m WATCHES OVER YOUR PLANE LIKE NOTHING ELSE IN THIS WORLD CRASH PREVENTION SYSTEM rides aircraft performing functions Worlds First Audible ESV Battery Monitor Simple Battery Cyder Audible Power Indicator Lost Aircraft Finder Range Tester Interference Monitor supported PCM Radio Systems PROTECT YOUR INVESTMENT AND FLY WITH COMPLETE CONFIDENCE Unlike other simple monitoring devices ThE GUARDIAN ANGEL protects losing aircraft six different ways unique audible voltmeter actually lets hear condition Ni-Cd batteries Continuous beeps spaced about 20 seconds apact get closer closer batteries discharge occur faster beep per second DONT FLY l No LEDs meters remember look Much better designs warn its too late l ThE GUARDIAN ANGEL also simple battery cycler measutes battery capacity Its interference monitot signaling channel clear Use find lost aircraft weeds As range tester accurately tells youre out range Finally slow constant beeps serve remind receiver No dead batteries get field l Easily connects unused servo channel between servo receiver Units shipped tinned leads add $800 Futaba connectors specify model ,ih THE GUARDIAN ANGEL s ii LOW POWER WEIGHS 06 OZ SMALL SIZE RELIABLE ACCURATE EASY TO INSTALL 30 day money back guarantee l ORDER DIRECT List Price S3995 Special Introductory Price $2995 ——plus $300 Postage HandlingFlorida residents add 6% sales tax Write cull information Dealer & distributor inquiries welcome Ti. ra Microsystems Engineering Inc 813 968-9510 PO Box 340608 Tampa Florida 33694 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
Edition: Model Aviation - 1990/06
Page Numbers: 95, 96, 97, 98, 99, 100, 104, 202
ping ri gr period ecificatios consider winch vinch s some del artciD ecm nnIr ir 0 . IC exte moma mUier e art ned th han whats b rs has cc well ws mi s work thatf Wor t some ol can kL Lmvs t German wt owner motor Sos mud Sf11 ml rofler does tim auso Belgium large motor edge up ther everyone possE Iglit 111W us West deed lung II d have blue line ting Ins k. f jul chani control ad conditio ad novel w pters inc ickly having new line Country United States West Germany Austria Great Britain Netherlands Belgium Switzerland turn 140150 Bosch 85100 165203 100 100 76 Bosch Bosch Bosch Lucas Bosch core con m Thats aided m V C g le mit p turna turnaroun of mc rnal tum d L 8 RU sing re U mold aver 120u mae molds uuluw ers ad Critic ci c -diani West dark oben nt Cieri iertrieb 8039 mans also Drum DIa mm 51127 33-40 plus adapters 30-80 4250 4565 50-60 25-100 gear hake liar 2Mo 1989 F flngC Gr460284 eterAu63270 isNeH020I9id i72245 286 W8280 Need270iu 2791397 Werner2401310 Roland1235 r Larry1410 pt Friedrich51flfl ichard Stew4270 3onestroo Henk1032701 rorp Espenr4-2/1014u gou Marital2401480 iWilfriedH020/10 al Dave sen KarstenHO mod2501490 Guy1470 soi-i 8/92501450 owski CP~ 9%2501380 Rich2048241 , Franca Milan245 ragg EddyIRG14l4oi Zdenek/92251405 Tadashi2801450 Miguel 260 1390 tip Iv uIl carudder conirilenca 1 aaynhivmtrlcai italy andes thIs drag signiflcar s IaTop speed ru LtCd18-second vsky Cze w winch m wrn measu r resistan values us informatioi Belohor es Oetween s data flownatff NO OCR TEXT shipping box ci fuselages Si wings h fact world-class F3] thin RoIf Girsbe very popular change some competitors sections withstanu u winches arry Jolly flew Hans net 89T Larry put flights etition several 01 rounds Con world-class F3B m commercially Tragfiachenbau er StraBe 12 E West Germany said think better slit hes very little writing whether oj nore experience e 89T longer orner competit mc eithei large mod nt insj dici moaeit tuninn othei may chast -pieceFirst -madeanal] cklngwith ar-perfect worki offered n first d vel air definite W rhaps theyre competita sta automot Jewel write Cervene Czechoslovaicia Czechoslovakian ships Ellipse three- ice slightly Lful West Ge tures wing up LV Muller r Czechoslova Ellipse ye re however g models esen fine gc I0 uch indeveloped sten design~ xl the moldinj F3B machine hours nto making 40 hours pet Its kind c v for wh truction igh au-i theyi aevelop di onder such m hase rangin d dollars ost developmc id tlng see tag drag ou nted servos fi ct-drive link Some mod mnkages breeze Oni ver linkaj size down slovakian team dcv away wit nylon line 1 nylofl tube screwed FU Krzyszror Ja skich 8/102 modelers drag sed rudder ill cables es al"t ibles short Fly McDaniel Power New Solid State On-Board Glow-Plug Drivers Now can drive 1 2 glow plugs efficiently automatically new McDaniel On-Board Glow-Plug Drivers engine 2 4 stroke glow has 1 2 cylinders Model 471 472 On-Board Glow-Plug Driver will ease jobs starting maintaining idle during taxiing power down flight maneuvers FEATURES INCLUDE Servo Reversing Optically Coupled Circuitry No RFI Automatic Shutdown Via TX RX Connector Plug Battery Pack Remote Glow Plug Indicator Panels Available Separately Battery Pack AC Charger NOT Included Available Separately See Local Hobby Dealer Contact McDaniel R/C Inc 1654 Crofton Blvd Suite 4 Crofton MD 21114 Visa MC accepted Phone 301721-6303 301721-6306 unified Nearly models used aile rons elevator rudder flaps very few having additional spoilers Com puter radios have become must mixing camber changing Most observed using crow configuration called butterfly Europe landing Europeans Americans used dif ferent styles transmitters European style use tray neckstrap allow ing pilots easily neatly install rain covers tray American way course employ hand-held transmitters Stick mode also showed cultural varia tion pilots using Mode Mode H popular America Oth ers using nonstandard stick configura tions various sorts comparing outline design top five placing models find following 1 Three models straight dihe dral wing Two wings threepiece flat center section 2 Four models wings straight trailing edges tapered leading edges reverse 3 Three models stepped taper wings two straight taper 4 Only Epsilon equipped Schuemann-like wing planform 5 Three models T-tails two con ventional tails 6 Four models slip-on nose cones canopy radio access point time no single oufline ap pears hold winning formula F3B models arent total look-alikes case some categories competition De signs show different mixes various features components according builders differing views what works best makes interesting event French Aero Club did excellent job organizing championships troduced some new ideas well usual four discrete audio signals distance task visual light indicator added case confusion light flashed several seconds after base cross ing give team members chance double-check signal organizers also provided individual lap flip cards see allowed teams check laps instantly also see what competition doing idea very popular contestants will likely become must future World Champs Another new idea no landing area clearly marked red tape 10 meters directly behind winches full length winch setup area Any model landing area penalized 100 points duration task winches set up once left place until completion task common prac tice USA F3B contests no landing area quite long Likewise model flying less three-meters al Continued page 202 104 Model Aviation D&J 900 Lucy ELECTRONICS Road ll Ml 48843 5462644 service makes R/C equipment utilizing state art electronics Spectrum Analyzer Precision Frequency Measuring equipment True 1991 Standards endorsed AMA & RCMA Transmitter Slicker Program FCC LicensedSpeed Control RepairsQuality Service Transmitter Checks Only includes GOLD/SILVER sticker $400 Transmitter & Receiver Calibration $2400 Frequency Upgrades & Changes crystals extra $2900 Bench Time Repairs per hour S25OO Transmitters service will receive AMA/RCMA sticker ADD $500 FOR SHIPPING & INSURANCE TURN AROUND TIME TWO WEEKS OR LESSI ____ usVISA/MASTERCARD ACCEPTEDCOD THE GUARDIAN ANGEL m WATCHES OVER YOUR PLANE LIKE NOTHING ELSE IN THIS WORLD CRASH PREVENTION SYSTEM rides aircraft performing functions Worlds First Audible ESV Battery Monitor Simple Battery Cyder Audible Power Indicator Lost Aircraft Finder Range Tester Interference Monitor supported PCM Radio Systems PROTECT YOUR INVESTMENT AND FLY WITH COMPLETE CONFIDENCE Unlike other simple monitoring devices ThE GUARDIAN ANGEL protects losing aircraft six different ways unique audible voltmeter actually lets hear condition Ni-Cd batteries Continuous beeps spaced about 20 seconds apact get closer closer batteries discharge occur faster beep per second DONT FLY l No LEDs meters remember look Much better designs warn its too late l ThE GUARDIAN ANGEL also simple battery cycler measutes battery capacity Its interference monitot signaling channel clear Use find lost aircraft weeds As range tester accurately tells youre out range Finally slow constant beeps serve remind receiver No dead batteries get field l Easily connects unused servo channel between servo receiver Units shipped tinned leads add $800 Futaba connectors specify model ,ih THE GUARDIAN ANGEL s ii LOW POWER WEIGHS 06 OZ SMALL SIZE RELIABLE ACCURATE EASY TO INSTALL 30 day money back guarantee l ORDER DIRECT List Price S3995 Special Introductory Price $2995 ——plus $300 Postage HandlingFlorida residents add 6% sales tax Write cull information Dealer & distributor inquiries welcome Ti. ra Microsystems Engineering Inc 813 968-9510 PO Box 340608 Tampa Florida 33694 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
Edition: Model Aviation - 1990/06
Page Numbers: 95, 96, 97, 98, 99, 100, 104, 202
ping ri gr period ecificatios consider winch vinch s some del artciD ecm nnIr ir 0 . IC exte moma mUier e art ned th han whats b rs has cc well ws mi s work thatf Wor t some ol can kL Lmvs t German wt owner motor Sos mud Sf11 ml rofler does tim auso Belgium large motor edge up ther everyone possE Iglit 111W us West deed lung II d have blue line ting Ins k. f jul chani control ad conditio ad novel w pters inc ickly having new line Country United States West Germany Austria Great Britain Netherlands Belgium Switzerland turn 140150 Bosch 85100 165203 100 100 76 Bosch Bosch Bosch Lucas Bosch core con m Thats aided m V C g le mit p turna turnaroun of mc rnal tum d L 8 RU sing re U mold aver 120u mae molds uuluw ers ad Critic ci c -diani West dark oben nt Cieri iertrieb 8039 mans also Drum DIa mm 51127 33-40 plus adapters 30-80 4250 4565 50-60 25-100 gear hake liar 2Mo 1989 F flngC Gr460284 eterAu63270 isNeH020I9id i72245 286 W8280 Need270iu 2791397 Werner2401310 Roland1235 r Larry1410 pt Friedrich51flfl ichard Stew4270 3onestroo Henk1032701 rorp Espenr4-2/1014u gou Marital2401480 iWilfriedH020/10 al Dave sen KarstenHO mod2501490 Guy1470 soi-i 8/92501450 owski CP~ 9%2501380 Rich2048241 , Franca Milan245 ragg EddyIRG14l4oi Zdenek/92251405 Tadashi2801450 Miguel 260 1390 tip Iv uIl carudder conirilenca 1 aaynhivmtrlcai italy andes thIs drag signiflcar s IaTop speed ru LtCd18-second vsky Cze w winch m wrn measu r resistan values us informatioi Belohor es Oetween s data flownatff NO OCR TEXT shipping box ci fuselages Si wings h fact world-class F3] thin RoIf Girsbe very popular change some competitors sections withstanu u winches arry Jolly flew Hans net 89T Larry put flights etition several 01 rounds Con world-class F3B m commercially Tragfiachenbau er StraBe 12 E West Germany said think better slit hes very little writing whether oj nore experience e 89T longer orner competit mc eithei large mod nt insj dici moaeit tuninn othei may chast -pieceFirst -madeanal] cklngwith ar-perfect worki offered n first d vel air definite W rhaps theyre competita sta automot Jewel write Cervene Czechoslovaicia Czechoslovakian ships Ellipse three- ice slightly Lful West Ge tures wing up LV Muller r Czechoslova Ellipse ye re however g models esen fine gc I0 uch indeveloped sten design~ xl the moldinj F3B machine hours nto making 40 hours pet Its kind c v for wh truction igh au-i theyi aevelop di onder such m hase rangin d dollars ost developmc id tlng see tag drag ou nted servos fi ct-drive link Some mod mnkages breeze Oni ver linkaj size down slovakian team dcv away wit nylon line 1 nylofl tube screwed FU Krzyszror Ja skich 8/102 modelers drag sed rudder ill cables es al"t ibles short Fly McDaniel Power New Solid State On-Board Glow-Plug Drivers Now can drive 1 2 glow plugs efficiently automatically new McDaniel On-Board Glow-Plug Drivers engine 2 4 stroke glow has 1 2 cylinders Model 471 472 On-Board Glow-Plug Driver will ease jobs starting maintaining idle during taxiing power down flight maneuvers FEATURES INCLUDE Servo Reversing Optically Coupled Circuitry No RFI Automatic Shutdown Via TX RX Connector Plug Battery Pack Remote Glow Plug Indicator Panels Available Separately Battery Pack AC Charger NOT Included Available Separately See Local Hobby Dealer Contact McDaniel R/C Inc 1654 Crofton Blvd Suite 4 Crofton MD 21114 Visa MC accepted Phone 301721-6303 301721-6306 unified Nearly models used aile rons elevator rudder flaps very few having additional spoilers Com puter radios have become must mixing camber changing Most observed using crow configuration called butterfly Europe landing Europeans Americans used dif ferent styles transmitters European style use tray neckstrap allow ing pilots easily neatly install rain covers tray American way course employ hand-held transmitters Stick mode also showed cultural varia tion pilots using Mode Mode H popular America Oth ers using nonstandard stick configura tions various sorts comparing outline design top five placing models find following 1 Three models straight dihe dral wing Two wings threepiece flat center section 2 Four models wings straight trailing edges tapered leading edges reverse 3 Three models stepped taper wings two straight taper 4 Only Epsilon equipped Schuemann-like wing planform 5 Three models T-tails two con ventional tails 6 Four models slip-on nose cones canopy radio access point time no single oufline ap pears hold winning formula F3B models arent total look-alikes case some categories competition De signs show different mixes various features components according builders differing views what works best makes interesting event French Aero Club did excellent job organizing championships troduced some new ideas well usual four discrete audio signals distance task visual light indicator added case confusion light flashed several seconds after base cross ing give team members chance double-check signal organizers also provided individual lap flip cards see allowed teams check laps instantly also see what competition doing idea very popular contestants will likely become must future World Champs Another new idea no landing area clearly marked red tape 10 meters directly behind winches full length winch setup area Any model landing area penalized 100 points duration task winches set up once left place until completion task common prac tice USA F3B contests no landing area quite long Likewise model flying less three-meters al Continued page 202 104 Model Aviation D&J 900 Lucy ELECTRONICS Road ll Ml 48843 5462644 service makes R/C equipment utilizing state art electronics Spectrum Analyzer Precision Frequency Measuring equipment True 1991 Standards endorsed AMA & RCMA Transmitter Slicker Program FCC LicensedSpeed Control RepairsQuality Service Transmitter Checks Only includes GOLD/SILVER sticker $400 Transmitter & Receiver Calibration $2400 Frequency Upgrades & Changes crystals extra $2900 Bench Time Repairs per hour S25OO Transmitters service will receive AMA/RCMA sticker ADD $500 FOR SHIPPING & INSURANCE TURN AROUND TIME TWO WEEKS OR LESSI ____ usVISA/MASTERCARD ACCEPTEDCOD THE GUARDIAN ANGEL m WATCHES OVER YOUR PLANE LIKE NOTHING ELSE IN THIS WORLD CRASH PREVENTION SYSTEM rides aircraft performing functions Worlds First Audible ESV Battery Monitor Simple Battery Cyder Audible Power Indicator Lost Aircraft Finder Range Tester Interference Monitor supported PCM Radio Systems PROTECT YOUR INVESTMENT AND FLY WITH COMPLETE CONFIDENCE Unlike other simple monitoring devices ThE GUARDIAN ANGEL protects losing aircraft six different ways unique audible voltmeter actually lets hear condition Ni-Cd batteries Continuous beeps spaced about 20 seconds apact get closer closer batteries discharge occur faster beep per second DONT FLY l No LEDs meters remember look Much better designs warn its too late l ThE GUARDIAN ANGEL also simple battery cycler measutes battery capacity Its interference monitot signaling channel clear Use find lost aircraft weeds As range tester accurately tells youre out range Finally slow constant beeps serve remind receiver No dead batteries get field l Easily connects unused servo channel between servo receiver Units shipped tinned leads add $800 Futaba connectors specify model ,ih THE GUARDIAN ANGEL s ii LOW POWER WEIGHS 06 OZ SMALL SIZE RELIABLE ACCURATE EASY TO INSTALL 30 day money back guarantee l ORDER DIRECT List Price S3995 Special Introductory Price $2995 ——plus $300 Postage HandlingFlorida residents add 6% sales tax Write cull information Dealer & distributor inquiries welcome Ti. ra Microsystems Engineering Inc 813 968-9510 PO Box 340608 Tampa Florida 33694 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
Edition: Model Aviation - 1990/06
Page Numbers: 95, 96, 97, 98, 99, 100, 104, 202
ping ri gr period ecificatios consider winch vinch s some del artciD ecm nnIr ir 0 . IC exte moma mUier e art ned th han whats b rs has cc well ws mi s work thatf Wor t some ol can kL Lmvs t German wt owner motor Sos mud Sf11 ml rofler does tim auso Belgium large motor edge up ther everyone possE Iglit 111W us West deed lung II d have blue line ting Ins k. f jul chani control ad conditio ad novel w pters inc ickly having new line Country United States West Germany Austria Great Britain Netherlands Belgium Switzerland turn 140150 Bosch 85100 165203 100 100 76 Bosch Bosch Bosch Lucas Bosch core con m Thats aided m V C g le mit p turna turnaroun of mc rnal tum d L 8 RU sing re U mold aver 120u mae molds uuluw ers ad Critic ci c -diani West dark oben nt Cieri iertrieb 8039 mans also Drum DIa mm 51127 33-40 plus adapters 30-80 4250 4565 50-60 25-100 gear hake liar 2Mo 1989 F flngC Gr460284 eterAu63270 isNeH020I9id i72245 286 W8280 Need270iu 2791397 Werner2401310 Roland1235 r Larry1410 pt Friedrich51flfl ichard Stew4270 3onestroo Henk1032701 rorp Espenr4-2/1014u gou Marital2401480 iWilfriedH020/10 al Dave sen KarstenHO mod2501490 Guy1470 soi-i 8/92501450 owski CP~ 9%2501380 Rich2048241 , Franca Milan245 ragg EddyIRG14l4oi Zdenek/92251405 Tadashi2801450 Miguel 260 1390 tip Iv uIl carudder conirilenca 1 aaynhivmtrlcai italy andes thIs drag signiflcar s IaTop speed ru LtCd18-second vsky Cze w winch m wrn measu r resistan values us informatioi Belohor es Oetween s data flownatff NO OCR TEXT shipping box ci fuselages Si wings h fact world-class F3] thin RoIf Girsbe very popular change some competitors sections withstanu u winches arry Jolly flew Hans net 89T Larry put flights etition several 01 rounds Con world-class F3B m commercially Tragfiachenbau er StraBe 12 E West Germany said think better slit hes very little writing whether oj nore experience e 89T longer orner competit mc eithei large mod nt insj dici moaeit tuninn othei may chast -pieceFirst -madeanal] cklngwith ar-perfect worki offered n first d vel air definite W rhaps theyre competita sta automot Jewel write Cervene Czechoslovaicia Czechoslovakian ships Ellipse three- ice slightly Lful West Ge tures wing up LV Muller r Czechoslova Ellipse ye re however g models esen fine gc I0 uch indeveloped sten design~ xl the moldinj F3B machine hours nto making 40 hours pet Its kind c v for wh truction igh au-i theyi aevelop di onder such m hase rangin d dollars ost developmc id tlng see tag drag ou nted servos fi ct-drive link Some mod mnkages breeze Oni ver linkaj size down slovakian team dcv away wit nylon line 1 nylofl tube screwed FU Krzyszror Ja skich 8/102 modelers drag sed rudder ill cables es al"t ibles short Fly McDaniel Power New Solid State On-Board Glow-Plug Drivers Now can drive 1 2 glow plugs efficiently automatically new McDaniel On-Board Glow-Plug Drivers engine 2 4 stroke glow has 1 2 cylinders Model 471 472 On-Board Glow-Plug Driver will ease jobs starting maintaining idle during taxiing power down flight maneuvers FEATURES INCLUDE Servo Reversing Optically Coupled Circuitry No RFI Automatic Shutdown Via TX RX Connector Plug Battery Pack Remote Glow Plug Indicator Panels Available Separately Battery Pack AC Charger NOT Included Available Separately See Local Hobby Dealer Contact McDaniel R/C Inc 1654 Crofton Blvd Suite 4 Crofton MD 21114 Visa MC accepted Phone 301721-6303 301721-6306 unified Nearly models used aile rons elevator rudder flaps very few having additional spoilers Com puter radios have become must mixing camber changing Most observed using crow configuration called butterfly Europe landing Europeans Americans used dif ferent styles transmitters European style use tray neckstrap allow ing pilots easily neatly install rain covers tray American way course employ hand-held transmitters Stick mode also showed cultural varia tion pilots using Mode Mode H popular America Oth ers using nonstandard stick configura tions various sorts comparing outline design top five placing models find following 1 Three models straight dihe dral wing Two wings threepiece flat center section 2 Four models wings straight trailing edges tapered leading edges reverse 3 Three models stepped taper wings two straight taper 4 Only Epsilon equipped Schuemann-like wing planform 5 Three models T-tails two con ventional tails 6 Four models slip-on nose cones canopy radio access point time no single oufline ap pears hold winning formula F3B models arent total look-alikes case some categories competition De signs show different mixes various features components according builders differing views what works best makes interesting event French Aero Club did excellent job organizing championships troduced some new ideas well usual four discrete audio signals distance task visual light indicator added case confusion light flashed several seconds after base cross ing give team members chance double-check signal organizers also provided individual lap flip cards see allowed teams check laps instantly also see what competition doing idea very popular contestants will likely become must future World Champs Another new idea no landing area clearly marked red tape 10 meters directly behind winches full length winch setup area Any model landing area penalized 100 points duration task winches set up once left place until completion task common prac tice USA F3B contests no landing area quite long Likewise model flying less three-meters al Continued page 202 104 Model Aviation D&J 900 Lucy ELECTRONICS Road ll Ml 48843 5462644 service makes R/C equipment utilizing state art electronics Spectrum Analyzer Precision Frequency Measuring equipment True 1991 Standards endorsed AMA & RCMA Transmitter Slicker Program FCC LicensedSpeed Control RepairsQuality Service Transmitter Checks Only includes GOLD/SILVER sticker $400 Transmitter & Receiver Calibration $2400 Frequency Upgrades & Changes crystals extra $2900 Bench Time Repairs per hour S25OO Transmitters service will receive AMA/RCMA sticker ADD $500 FOR SHIPPING & INSURANCE TURN AROUND TIME TWO WEEKS OR LESSI ____ usVISA/MASTERCARD ACCEPTEDCOD THE GUARDIAN ANGEL m WATCHES OVER YOUR PLANE LIKE NOTHING ELSE IN THIS WORLD CRASH PREVENTION SYSTEM rides aircraft performing functions Worlds First Audible ESV Battery Monitor Simple Battery Cyder Audible Power Indicator Lost Aircraft Finder Range Tester Interference Monitor supported PCM Radio Systems PROTECT YOUR INVESTMENT AND FLY WITH COMPLETE CONFIDENCE Unlike other simple monitoring devices ThE GUARDIAN ANGEL protects losing aircraft six different ways unique audible voltmeter actually lets hear condition Ni-Cd batteries Continuous beeps spaced about 20 seconds apact get closer closer batteries discharge occur faster beep per second DONT FLY l No LEDs meters remember look Much better designs warn its too late l ThE GUARDIAN ANGEL also simple battery cycler measutes battery capacity Its interference monitot signaling channel clear Use find lost aircraft weeds As range tester accurately tells youre out range Finally slow constant beeps serve remind receiver No dead batteries get field l Easily connects unused servo channel between servo receiver Units shipped tinned leads add $800 Futaba connectors specify model ,ih THE GUARDIAN ANGEL s ii LOW POWER WEIGHS 06 OZ SMALL SIZE RELIABLE ACCURATE EASY TO INSTALL 30 day money back guarantee l ORDER DIRECT List Price S3995 Special Introductory Price $2995 ——plus $300 Postage HandlingFlorida residents add 6% sales tax Write cull information Dealer & distributor inquiries welcome Ti. ra Microsystems Engineering Inc 813 968-9510 PO Box 340608 Tampa Florida 33694 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