Radio Control Giant Scale John de Vries Colonel USAF Ret REDUNDANT key word month rather 11 talk about redundancy Giant Scale models decided advantage Big builders have over compatriots havent gotten word yet models 99 out 100 instances capable carrying smidgen extra weight lets us add number redundant bits pieces equip ment resulting installation goes toward making models much safer fly Early Giant movement modelers discovered need double-up servos control flying surfaces talking about separate servo aileron dual servos rudder elevators Admittedly early days Big Birds servos generated about 40 in-oz torque wasnt unusual find model flying surfaces could blown down air loads double doses servo power werent available us have continued practiceeven though Giant servos availableto main tain redundancy control systems models course Y-connected servos require long servo-wire leads feature sometimes makes radios subject RF interference picked up long leads However weve gotten around problem putting chokes leads As result have strong control systems respond just way want Moving bit further down redundancy road Ace R/C others designed redundant battery systems Since weak link RC systems inevitable Ni-Cd battery pack redundant batteries have saved uncounted hard BJ MeyerHickoryCreek TX painted Balsa USA Phaeton9O L represent flag Lone Star state Daughter Elaine stands beside Maloney 100-powered model will soon carry 8mm movie camera J-4 SportsterultralightAbove 1/3-scale Emil Agostas Weaverville NC latest design intends power 11 4-in-span bird OS Max 91 FSR 50 Model Aviation John P Violette LaPlace LA 1/10-scale Westcraft 9-17G Four ST 75s power its 40-lb weight Wingspan 18120 Radio system usesAce R/C redundantbatterysystem two receivers John has thoroughiy documented both prototype aircraft its medalwinning crew Landing gear retraction mechanism worm-gear type Dan Lutz Falibrook CA Boeing F4B-2 models top-line Navy fighter Thirties its Quadra 35 may exchanged Q40 help lift crafts 221/i-lb weight landings Using twin 1200 mAli receiver/servo batteries automatic switch-over event battery failure just plain common sense Today isnt unusual find Giant Scale model contains two receivers may both tuned same transmitter exotic installations second receiver may tuned second backup transmitter Its good idea youre going doublereceiver route install model separated far possible will minimize mutual interference particularly two RC fre quencies used Twin receivers amount complete may use word again totally redundant control system Add dual-battery system talked about above probability successful model flight goes up astronomically best part whole exercise model weight increased nominallya pound less some other things can improve effects redundant radio/battery system example can choose control side elevator system other side receiver number two works well larger Giants will practically assure flap back model will continue function doesnt take too much horseback engineer ing run two sets rudder controls either rudders dual servos can set run tail wheel its primary control function secondary control rudder other can set up run rudder primary second ary function being tail wheel simply paralleling pushrods have won local state lottery may inclined double-servo ailerons too certainly wont hurt completely dual-control model youre inclined toward use cable control systems closed-loop method has much recommend Both sides servo control arm connected control surface hornsas prototype control cable installa tions loss single cable will thus have minimal adverse effect Admittedly its bit fussier connect four cables servo arm case elevator control two Ups two Downs example efforts worth course youll have find suitable locations extra pulley wheels direct control wires within model theyre needed Usually ever can parallel wires through paired pulleysfollowing prototype practice too use bellcrank idlers can help put wires want short pushrod servo drives bellcranks common axle actual control wires attached bellcranks mustnt forget engines double-up kick isnt unique Giants its still good idea provide glow plug heat two-cycle-powered Giants does keep plug lit idle rpm assures engine can accelerated after idling descent Itll take battery micro-switch thats turned throttle servo brought back idle gasoline-powered engines theres IMAA safety rule mandates servooperated engine cutoff cutoff works ignition circuit Theres nothing complicated about installing cutoff modelers add second manual button ground out Continued page 140 *DARNED GOOD AIRMEN Lightest weight Pilots Available .. * FULL BODY PILOT KIT Ltfellke Vitoyl aloe robber parts Easy assemble ord finish Kit eorttains Pilot head harods boots helmet cap goggles foil templates easy itstroctiorts Fully positiortable 100. Height- Weight-NEW Low Prtcas NO206 Scalelle2 oz S7 No205- /5 Scale14t o3 oz s8PL/r\L/ No204-1/4 Scale174oz S 9V IYV NO203-1/3 Scale23sBoa sl6 SPORTSMAN 01 550NSTORMPR- FULL 000001 OUSTAll R/C DGA Designs . OGA Designs 00 DA Designs e DGA Designs es OGA Designee S C C 01 0 S 0 0 0 0 o0 C C SC 0 0 0 05 c a01 z0 S 0 0 0 *BUST PILOT KIT Ltelle ohyl lot, at4be polIo ElI contaIns Plot head helmet spelt cap gooSes 04 JacketEasy assemble tinsy - Height Wtght- Low prises No 05OScale 3-10 340S NoteshOcole3-78t-tOOagOS 00OScele4-30t-t2oas7PP No OS ale 0-00 2-taos140P Aatosndng raallsttn attainable plastics.. OOcotothell odreme light easleht em completed cli 000401 PlOt ChehtSelllflaoellttlCOh0etteCtOfltfl8bOll1C0otdOdl0lClft 0 Send slOO tar Catalog S New Colt State Rasdeos add 75 sates lee. Sand check MO. COOs Allow 3 eese Cflepk clear S DGA Designs 0 DA @6 DGA Designs September 1987 51 Still Usingbld Fashioned Wing Hinges-You will gain control efficiency eliminating gap between moveable stationary control surfaces EASY TO INSTALL will amazed performance1/4 DEEP SLIT ALQi gained using simple inexpen-I MATAGSR~ LW THE sive improvement FREE MOVEMENT 450 STRONG AND LIGHTWEIGHT COMPLETELY FUELPROOF-2STRARSITPINTOMJA SAVALL HOLE EVERY RtICHOR COMPATABLE WITH ALL IRON-ONSo osia CE4AORYLATE GLUE IS Hais CAFELAER MATER IALSACl7CV 8TLL CARRY GLUE COMES iN 3 FT LENGTHSENOSE OiAtr SMALL 118 ORPRiCE 3 ft $250 _________________________________________IVSERT SMALL LARGE 114FOR ADD TSAIIdL SEC7t1Tl EVER ER RiICHES OtT OF F ISV L AdS SAltS AS ACEDED FOR FIAIISAPAS Send Free info fine products FOURMOST PRODUCTS 4040 24th Avenue Forest Grove OR 97116 GAPLESS HiNGE SLOTTER Simplifies installation Gapless Hingas Makes Slots 4 Siaes Balsa itI t CE $250 1 TRIM KNIFE Trim Knife designed precisely edge trim excess cover ing material model Can used outside edges straight curved Blade can set trom 1/16 1/4 simple adlustment screw Trim Knife mill make perfect overlap ous seams Works witn cover ig materials 6 blades Trim Knife Set includes 6 blades $900 Trim Knife Blades 5 per pack $300 m -IA No Notches Straight Cuts Heavy duty estra sharp no notch blade Same sice regular blades tip does flex cusing strip png thicker materials Great big birds Big Bird Blades box 100 blades$950 Trial size package 20 blades$250 RC Scale/Wischers Continued page 137 flights between charges Heavy flight loads single servo also place extra drain batteries Hobbypoxy colors Pettit Paint Co manufac turers Hobbypoxy products has published mulas mixing colors used contemporary Israeli Air Force aircraft colors Pale Green FS-34227 Tan FS-30219 Sand FS-33531 Light Gray FS-36622 Two colors Tan Light Gray same used contemporary USAF aircraft published column earlier formulas Light Gray 12 parts HIO White five parts H55 Cream two parts H70 Gray Tan five parts H65 Bright Red three parts HIO White two parts H49 Cub Yellow part H70 Gray part H81 Black Pale Green II parts H70 Gray seven parts H47 Bright Yellow part H24 Dark Blue part H Ifi White part H57 Bright Orange Sand 14 parts H55 Cream two parts H70 Gray part H65 Bright Red part HIO White Bob Dolly Wiseher 5-22] Lapham Peak Rd Delafield WI 530 J8 RC Old-Timers/Mathews Continued page 49 ials Lake Rocket City now Sig sure easy install particularly strip stock like use Old-Timers need cut slot wood knife slide hinge dry flow thin CyA glue seam bit stiff like Old-Timers control surface air loads usually low control inputs infrequent additional battery drain due stiff hinges likely insignificant Finally note some amusement other Old-Timer columnists another pub lication challenges us report onand take stand aboutthe raging dispute hassle over SAM Society Antique Modelers RC competition rules will compete national level primarily due sort hostility competition tends create what otherwise nice people included fore express own opinions would totally unfair intent column influence opinion rather create interest fascinating aspect hobby chronicle its history hope various sundry warring parties will soon recognize damage such attitudes doing will get back basic function recreational activity. enjoy what Its worth Ive spent last eight months developing ELT entry-level trainer trying combine aerodynamic parameters Old-Timer easier construction techniques contemporary design Talk about challenge sixth revision currently flying both OS 20 four-stroker K&B 20 Sportster two-stroker results develop ment flying perhaps significant worth comment friend flying site recently called attention OS four-stroker aw first Surpass series though advertised such correct Just take look bubbles head covers. high-lift cams forth have obviously used Further switching engines produces virtually no difference linear velocity models flight Conclusion least instance 20 four-stroker right 20 twostroker Dee B Mathews 909 Maize Rd Townhouse 734 Wichita KS 87212 RC Giant Scale/de Vries Continued page 51 ignitionone can reached safely outside model Im suggesting yet another servo-operated kill switch What Im saying safety redundancy manual switch such positive factors such switches should used much universally now subject good friend Ed Carrol suggested rather simple effective idea redundif transmitter adding couple wires plug switch Ed has dual-battened Krafts Futabas hes flown several times during day simple flip switch gives him freshly charged battery transmitter hes off two-day weekend Giant rally really doesnt have worry about having stay motel recharge trans mitter actual use Ed has stuck extra set transmitter batteries back case some Velcro doesnt look sexy system works like gangbusters have give credit inspiration column newfound friend John P Violette LaPlace LA Johns magnificent B-17G model appears months effort rather exten sive correspondence John fully documented history prototype Fortress Con gressional Medals Honor awarded its crewand developed what amounts complete history well Boeings letter Charles 0 Brown 8101 Sonar Rl Clinton MD 20735 Charlies gone route trying document specific Grumman Bearcat has come up empty Any out can provide photos anything concerned F8F-2 civilian llcense number N7700C flown air shows Bill Fornoff se drop Charlie line know Dan Lutz will happy see Boeing F4B-2 months column Since Dans picture know hes recovered its just physical recovery either since hes back workshop first met Dan gave SO-cent tour Kraft factory like fivebuck tour about 10 years ago Emil Agosta Dry Ridge Models 59 McCurry RdWeavervilleNC28787isatitagain Back designing beautiful Giant models latest J-4 Sportster -scale has span 114 1824 sq wing area Itll powered OS Max 91 FSR bones weigh tad under seven pounds guessti mate radio engine covering ultralight Scale model will top out between 12 13 lb prototype model flown Emil will probably offer drawings maybe kit Bill Hannans done another onel Volume 2 Intern ational Peanuts & Pistachios out 140 Model Aviation INTERCEPTOR Ready Fly $695 U build Kit $4 95 Note Please odd $3 P & H 1st 3 models Add tO % price additional model COMPANY PO Box 68132 Portland OR 97268 Fokker D-VII VK Model Aircraft PO Box 3007 Aurora IL 60505 312-357-1883 contains six drawings time around em look suitable quarter-scale larger treatment last drawing book MiniMax ultralight shows powered Rotax engine dedicated Scale nut could build model use Supertigre 2500 power Supertigre minimum cosmetic additions could easily pass scale engine Bills latest book available $495 plus $150 P&H PO Box Escondido CA 92025 hell autograph no extra charge Finally Fred Wallman promised set scale landing gear parts eternal quarterscale Ryan B-5 thats filling local workshop past three years has made great progress Hes developed some sporty-looking drawings looks like gearll fit perfectly interim hes also come up neat method making swirls Ryan cowling quarter-scale swirls have diameter make aluminum printers plate sheets using drill press -in dowel mandrel some 150-grit sand paper glued its base actual cowling sections will cut swirled aluminum aid pre-fitted cardboard templates John de Vries 4610 MoffatLn Colorado Springs CO 80915 RCHelicopters Continued page 53 obo Kalt someone starts importing again Kobe really surprised just realistic Kobe-made Hughes looks air Im going add Du-Bro -scale pilot figure soon have time paint up addition will look realistic side beneflt flying gasoline-powered Helicopters because low oil content fuel virtually nothing clean up after flying session Just wipe off concrete grime charge batteries fill tank go fly again Hughes 300 stays track has needed no maintenance far could attributed part Dave Robertsons skill assembling model credit must also given Kobes robust design Like said before hope someone out finds way overcome yen/dollar problem decides import Kobe line Flying Hughes 300 such neat experi ence wish could share BCNU Larry Jolly 5501 W Como Santa Ana CA 92703 RC Pylon Racing/HagerPlanarlan/Wainfan Continued page 54Continued page 56 15 Pt Jeff Faleo 15 Pt Lee Pohar 14 Pt Ori Steinmetz 12 Pt Dino Goegan 12 Pt Dick Shields 12 Pt Dan Kane Sr 11 Pt Bob Loehner 9 Pt Bob Bentley 8 pt Tom Barrett 8 Pt Ron Jacobs 8 pt Bruce Balko 6 Pt J&ry Aarsted6 Pt Scott Justice 5 Pt Bob Lyttle 5 Pt Dave Smith 2 Pt Fastest time 13969 went Dan Kane Jr Thanks participants thanks Orv Steinmetz interesting entertaining report See next month Bill Hager 706 Glen Haven Dr Conroe IX 77385 tical canted either fore aft laterally next step add upper longerons form side cabin should first attached trailing edge bent position sure bottom fuselage securely pinned down building board before adding top longerons will lift up warp bent place Once upper longerons have attached cabin top cross members side diagonals canard bearers installed putting canard bearers sure details other Zimbabwe Model Products kits call write Full color deluxe catalog-SI 00 C--ZIMPRO MARKETING Manufactuers Repesentatnve & npo e s o P ne can Poductsp PO BOX 3076 OAK RIDGE TENNESSEE 37830 Tel 615482-6188 September 1987 141 AIR WOLF EPOXY FIBERGLASS FUSELAGE S TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $20000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 Z n 526 ALL BALSA ARF KIT features pre-assembled wood ply fuselage fully sheeted wings stab & rudder epoxy cowl Lexan canopy hardware
Edition: Model Aviation - 1987/09
Page Numbers: 50, 51, 140, 141
Radio Control Giant Scale John de Vries Colonel USAF Ret REDUNDANT key word month rather 11 talk about redundancy Giant Scale models decided advantage Big builders have over compatriots havent gotten word yet models 99 out 100 instances capable carrying smidgen extra weight lets us add number redundant bits pieces equip ment resulting installation goes toward making models much safer fly Early Giant movement modelers discovered need double-up servos control flying surfaces talking about separate servo aileron dual servos rudder elevators Admittedly early days Big Birds servos generated about 40 in-oz torque wasnt unusual find model flying surfaces could blown down air loads double doses servo power werent available us have continued practiceeven though Giant servos availableto main tain redundancy control systems models course Y-connected servos require long servo-wire leads feature sometimes makes radios subject RF interference picked up long leads However weve gotten around problem putting chokes leads As result have strong control systems respond just way want Moving bit further down redundancy road Ace R/C others designed redundant battery systems Since weak link RC systems inevitable Ni-Cd battery pack redundant batteries have saved uncounted hard BJ MeyerHickoryCreek TX painted Balsa USA Phaeton9O L represent flag Lone Star state Daughter Elaine stands beside Maloney 100-powered model will soon carry 8mm movie camera J-4 SportsterultralightAbove 1/3-scale Emil Agostas Weaverville NC latest design intends power 11 4-in-span bird OS Max 91 FSR 50 Model Aviation John P Violette LaPlace LA 1/10-scale Westcraft 9-17G Four ST 75s power its 40-lb weight Wingspan 18120 Radio system usesAce R/C redundantbatterysystem two receivers John has thoroughiy documented both prototype aircraft its medalwinning crew Landing gear retraction mechanism worm-gear type Dan Lutz Falibrook CA Boeing F4B-2 models top-line Navy fighter Thirties its Quadra 35 may exchanged Q40 help lift crafts 221/i-lb weight landings Using twin 1200 mAli receiver/servo batteries automatic switch-over event battery failure just plain common sense Today isnt unusual find Giant Scale model contains two receivers may both tuned same transmitter exotic installations second receiver may tuned second backup transmitter Its good idea youre going doublereceiver route install model separated far possible will minimize mutual interference particularly two RC fre quencies used Twin receivers amount complete may use word again totally redundant control system Add dual-battery system talked about above probability successful model flight goes up astronomically best part whole exercise model weight increased nominallya pound less some other things can improve effects redundant radio/battery system example can choose control side elevator system other side receiver number two works well larger Giants will practically assure flap back model will continue function doesnt take too much horseback engineer ing run two sets rudder controls either rudders dual servos can set run tail wheel its primary control function secondary control rudder other can set up run rudder primary second ary function being tail wheel simply paralleling pushrods have won local state lottery may inclined double-servo ailerons too certainly wont hurt completely dual-control model youre inclined toward use cable control systems closed-loop method has much recommend Both sides servo control arm connected control surface hornsas prototype control cable installa tions loss single cable will thus have minimal adverse effect Admittedly its bit fussier connect four cables servo arm case elevator control two Ups two Downs example efforts worth course youll have find suitable locations extra pulley wheels direct control wires within model theyre needed Usually ever can parallel wires through paired pulleysfollowing prototype practice too use bellcrank idlers can help put wires want short pushrod servo drives bellcranks common axle actual control wires attached bellcranks mustnt forget engines double-up kick isnt unique Giants its still good idea provide glow plug heat two-cycle-powered Giants does keep plug lit idle rpm assures engine can accelerated after idling descent Itll take battery micro-switch thats turned throttle servo brought back idle gasoline-powered engines theres IMAA safety rule mandates servooperated engine cutoff cutoff works ignition circuit Theres nothing complicated about installing cutoff modelers add second manual button ground out Continued page 140 *DARNED GOOD AIRMEN Lightest weight Pilots Available .. * FULL BODY PILOT KIT Ltfellke Vitoyl aloe robber parts Easy assemble ord finish Kit eorttains Pilot head harods boots helmet cap goggles foil templates easy itstroctiorts Fully positiortable 100. Height- Weight-NEW Low Prtcas NO206 Scalelle2 oz S7 No205- /5 Scale14t o3 oz s8PL/r\L/ No204-1/4 Scale174oz S 9V IYV NO203-1/3 Scale23sBoa sl6 SPORTSMAN 01 550NSTORMPR- FULL 000001 OUSTAll R/C DGA Designs . OGA Designs 00 DA Designs e DGA Designs es OGA Designee S C C 01 0 S 0 0 0 0 o0 C C SC 0 0 0 05 c a01 z0 S 0 0 0 *BUST PILOT KIT Ltelle ohyl lot, at4be polIo ElI contaIns Plot head helmet spelt cap gooSes 04 JacketEasy assemble tinsy - Height Wtght- Low prises No 05OScale 3-10 340S NoteshOcole3-78t-tOOagOS 00OScele4-30t-t2oas7PP No OS ale 0-00 2-taos140P Aatosndng raallsttn attainable plastics.. OOcotothell odreme light easleht em completed cli 000401 PlOt ChehtSelllflaoellttlCOh0etteCtOfltfl8bOll1C0otdOdl0lClft 0 Send slOO tar Catalog S New Colt State Rasdeos add 75 sates lee. Sand check MO. COOs Allow 3 eese Cflepk clear S DGA Designs 0 DA @6 DGA Designs September 1987 51 Still Usingbld Fashioned Wing Hinges-You will gain control efficiency eliminating gap between moveable stationary control surfaces EASY TO INSTALL will amazed performance1/4 DEEP SLIT ALQi gained using simple inexpen-I MATAGSR~ LW THE sive improvement FREE MOVEMENT 450 STRONG AND LIGHTWEIGHT COMPLETELY FUELPROOF-2STRARSITPINTOMJA SAVALL HOLE EVERY RtICHOR COMPATABLE WITH ALL IRON-ONSo osia CE4AORYLATE GLUE IS Hais CAFELAER MATER IALSACl7CV 8TLL CARRY GLUE COMES iN 3 FT LENGTHSENOSE OiAtr SMALL 118 ORPRiCE 3 ft $250 _________________________________________IVSERT SMALL LARGE 114FOR ADD TSAIIdL SEC7t1Tl EVER ER RiICHES OtT OF F ISV L AdS SAltS AS ACEDED FOR FIAIISAPAS Send Free info fine products FOURMOST PRODUCTS 4040 24th Avenue Forest Grove OR 97116 GAPLESS HiNGE SLOTTER Simplifies installation Gapless Hingas Makes Slots 4 Siaes Balsa itI t CE $250 1 TRIM KNIFE Trim Knife designed precisely edge trim excess cover ing material model Can used outside edges straight curved Blade can set trom 1/16 1/4 simple adlustment screw Trim Knife mill make perfect overlap ous seams Works witn cover ig materials 6 blades Trim Knife Set includes 6 blades $900 Trim Knife Blades 5 per pack $300 m -IA No Notches Straight Cuts Heavy duty estra sharp no notch blade Same sice regular blades tip does flex cusing strip png thicker materials Great big birds Big Bird Blades box 100 blades$950 Trial size package 20 blades$250 RC Scale/Wischers Continued page 137 flights between charges Heavy flight loads single servo also place extra drain batteries Hobbypoxy colors Pettit Paint Co manufac turers Hobbypoxy products has published mulas mixing colors used contemporary Israeli Air Force aircraft colors Pale Green FS-34227 Tan FS-30219 Sand FS-33531 Light Gray FS-36622 Two colors Tan Light Gray same used contemporary USAF aircraft published column earlier formulas Light Gray 12 parts HIO White five parts H55 Cream two parts H70 Gray Tan five parts H65 Bright Red three parts HIO White two parts H49 Cub Yellow part H70 Gray part H81 Black Pale Green II parts H70 Gray seven parts H47 Bright Yellow part H24 Dark Blue part H Ifi White part H57 Bright Orange Sand 14 parts H55 Cream two parts H70 Gray part H65 Bright Red part HIO White Bob Dolly Wiseher 5-22] Lapham Peak Rd Delafield WI 530 J8 RC Old-Timers/Mathews Continued page 49 ials Lake Rocket City now Sig sure easy install particularly strip stock like use Old-Timers need cut slot wood knife slide hinge dry flow thin CyA glue seam bit stiff like Old-Timers control surface air loads usually low control inputs infrequent additional battery drain due stiff hinges likely insignificant Finally note some amusement other Old-Timer columnists another pub lication challenges us report onand take stand aboutthe raging dispute hassle over SAM Society Antique Modelers RC competition rules will compete national level primarily due sort hostility competition tends create what otherwise nice people included fore express own opinions would totally unfair intent column influence opinion rather create interest fascinating aspect hobby chronicle its history hope various sundry warring parties will soon recognize damage such attitudes doing will get back basic function recreational activity. enjoy what Its worth Ive spent last eight months developing ELT entry-level trainer trying combine aerodynamic parameters Old-Timer easier construction techniques contemporary design Talk about challenge sixth revision currently flying both OS 20 four-stroker K&B 20 Sportster two-stroker results develop ment flying perhaps significant worth comment friend flying site recently called attention OS four-stroker aw first Surpass series though advertised such correct Just take look bubbles head covers. high-lift cams forth have obviously used Further switching engines produces virtually no difference linear velocity models flight Conclusion least instance 20 four-stroker right 20 twostroker Dee B Mathews 909 Maize Rd Townhouse 734 Wichita KS 87212 RC Giant Scale/de Vries Continued page 51 ignitionone can reached safely outside model Im suggesting yet another servo-operated kill switch What Im saying safety redundancy manual switch such positive factors such switches should used much universally now subject good friend Ed Carrol suggested rather simple effective idea redundif transmitter adding couple wires plug switch Ed has dual-battened Krafts Futabas hes flown several times during day simple flip switch gives him freshly charged battery transmitter hes off two-day weekend Giant rally really doesnt have worry about having stay motel recharge trans mitter actual use Ed has stuck extra set transmitter batteries back case some Velcro doesnt look sexy system works like gangbusters have give credit inspiration column newfound friend John P Violette LaPlace LA Johns magnificent B-17G model appears months effort rather exten sive correspondence John fully documented history prototype Fortress Con gressional Medals Honor awarded its crewand developed what amounts complete history well Boeings letter Charles 0 Brown 8101 Sonar Rl Clinton MD 20735 Charlies gone route trying document specific Grumman Bearcat has come up empty Any out can provide photos anything concerned F8F-2 civilian llcense number N7700C flown air shows Bill Fornoff se drop Charlie line know Dan Lutz will happy see Boeing F4B-2 months column Since Dans picture know hes recovered its just physical recovery either since hes back workshop first met Dan gave SO-cent tour Kraft factory like fivebuck tour about 10 years ago Emil Agosta Dry Ridge Models 59 McCurry RdWeavervilleNC28787isatitagain Back designing beautiful Giant models latest J-4 Sportster -scale has span 114 1824 sq wing area Itll powered OS Max 91 FSR bones weigh tad under seven pounds guessti mate radio engine covering ultralight Scale model will top out between 12 13 lb prototype model flown Emil will probably offer drawings maybe kit Bill Hannans done another onel Volume 2 Intern ational Peanuts & Pistachios out 140 Model Aviation INTERCEPTOR Ready Fly $695 U build Kit $4 95 Note Please odd $3 P & H 1st 3 models Add tO % price additional model COMPANY PO Box 68132 Portland OR 97268 Fokker D-VII VK Model Aircraft PO Box 3007 Aurora IL 60505 312-357-1883 contains six drawings time around em look suitable quarter-scale larger treatment last drawing book MiniMax ultralight shows powered Rotax engine dedicated Scale nut could build model use Supertigre 2500 power Supertigre minimum cosmetic additions could easily pass scale engine Bills latest book available $495 plus $150 P&H PO Box Escondido CA 92025 hell autograph no extra charge Finally Fred Wallman promised set scale landing gear parts eternal quarterscale Ryan B-5 thats filling local workshop past three years has made great progress Hes developed some sporty-looking drawings looks like gearll fit perfectly interim hes also come up neat method making swirls Ryan cowling quarter-scale swirls have diameter make aluminum printers plate sheets using drill press -in dowel mandrel some 150-grit sand paper glued its base actual cowling sections will cut swirled aluminum aid pre-fitted cardboard templates John de Vries 4610 MoffatLn Colorado Springs CO 80915 RCHelicopters Continued page 53 obo Kalt someone starts importing again Kobe really surprised just realistic Kobe-made Hughes looks air Im going add Du-Bro -scale pilot figure soon have time paint up addition will look realistic side beneflt flying gasoline-powered Helicopters because low oil content fuel virtually nothing clean up after flying session Just wipe off concrete grime charge batteries fill tank go fly again Hughes 300 stays track has needed no maintenance far could attributed part Dave Robertsons skill assembling model credit must also given Kobes robust design Like said before hope someone out finds way overcome yen/dollar problem decides import Kobe line Flying Hughes 300 such neat experi ence wish could share BCNU Larry Jolly 5501 W Como Santa Ana CA 92703 RC Pylon Racing/HagerPlanarlan/Wainfan Continued page 54Continued page 56 15 Pt Jeff Faleo 15 Pt Lee Pohar 14 Pt Ori Steinmetz 12 Pt Dino Goegan 12 Pt Dick Shields 12 Pt Dan Kane Sr 11 Pt Bob Loehner 9 Pt Bob Bentley 8 pt Tom Barrett 8 Pt Ron Jacobs 8 pt Bruce Balko 6 Pt J&ry Aarsted6 Pt Scott Justice 5 Pt Bob Lyttle 5 Pt Dave Smith 2 Pt Fastest time 13969 went Dan Kane Jr Thanks participants thanks Orv Steinmetz interesting entertaining report See next month Bill Hager 706 Glen Haven Dr Conroe IX 77385 tical canted either fore aft laterally next step add upper longerons form side cabin should first attached trailing edge bent position sure bottom fuselage securely pinned down building board before adding top longerons will lift up warp bent place Once upper longerons have attached cabin top cross members side diagonals canard bearers installed putting canard bearers sure details other Zimbabwe Model Products kits call write Full color deluxe catalog-SI 00 C--ZIMPRO MARKETING Manufactuers Repesentatnve & npo e s o P ne can Poductsp PO BOX 3076 OAK RIDGE TENNESSEE 37830 Tel 615482-6188 September 1987 141 AIR WOLF EPOXY FIBERGLASS FUSELAGE S TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $20000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 Z n 526 ALL BALSA ARF KIT features pre-assembled wood ply fuselage fully sheeted wings stab & rudder epoxy cowl Lexan canopy hardware
Edition: Model Aviation - 1987/09
Page Numbers: 50, 51, 140, 141
Radio Control Giant Scale John de Vries Colonel USAF Ret REDUNDANT key word month rather 11 talk about redundancy Giant Scale models decided advantage Big builders have over compatriots havent gotten word yet models 99 out 100 instances capable carrying smidgen extra weight lets us add number redundant bits pieces equip ment resulting installation goes toward making models much safer fly Early Giant movement modelers discovered need double-up servos control flying surfaces talking about separate servo aileron dual servos rudder elevators Admittedly early days Big Birds servos generated about 40 in-oz torque wasnt unusual find model flying surfaces could blown down air loads double doses servo power werent available us have continued practiceeven though Giant servos availableto main tain redundancy control systems models course Y-connected servos require long servo-wire leads feature sometimes makes radios subject RF interference picked up long leads However weve gotten around problem putting chokes leads As result have strong control systems respond just way want Moving bit further down redundancy road Ace R/C others designed redundant battery systems Since weak link RC systems inevitable Ni-Cd battery pack redundant batteries have saved uncounted hard BJ MeyerHickoryCreek TX painted Balsa USA Phaeton9O L represent flag Lone Star state Daughter Elaine stands beside Maloney 100-powered model will soon carry 8mm movie camera J-4 SportsterultralightAbove 1/3-scale Emil Agostas Weaverville NC latest design intends power 11 4-in-span bird OS Max 91 FSR 50 Model Aviation John P Violette LaPlace LA 1/10-scale Westcraft 9-17G Four ST 75s power its 40-lb weight Wingspan 18120 Radio system usesAce R/C redundantbatterysystem two receivers John has thoroughiy documented both prototype aircraft its medalwinning crew Landing gear retraction mechanism worm-gear type Dan Lutz Falibrook CA Boeing F4B-2 models top-line Navy fighter Thirties its Quadra 35 may exchanged Q40 help lift crafts 221/i-lb weight landings Using twin 1200 mAli receiver/servo batteries automatic switch-over event battery failure just plain common sense Today isnt unusual find Giant Scale model contains two receivers may both tuned same transmitter exotic installations second receiver may tuned second backup transmitter Its good idea youre going doublereceiver route install model separated far possible will minimize mutual interference particularly two RC fre quencies used Twin receivers amount complete may use word again totally redundant control system Add dual-battery system talked about above probability successful model flight goes up astronomically best part whole exercise model weight increased nominallya pound less some other things can improve effects redundant radio/battery system example can choose control side elevator system other side receiver number two works well larger Giants will practically assure flap back model will continue function doesnt take too much horseback engineer ing run two sets rudder controls either rudders dual servos can set run tail wheel its primary control function secondary control rudder other can set up run rudder primary second ary function being tail wheel simply paralleling pushrods have won local state lottery may inclined double-servo ailerons too certainly wont hurt completely dual-control model youre inclined toward use cable control systems closed-loop method has much recommend Both sides servo control arm connected control surface hornsas prototype control cable installa tions loss single cable will thus have minimal adverse effect Admittedly its bit fussier connect four cables servo arm case elevator control two Ups two Downs example efforts worth course youll have find suitable locations extra pulley wheels direct control wires within model theyre needed Usually ever can parallel wires through paired pulleysfollowing prototype practice too use bellcrank idlers can help put wires want short pushrod servo drives bellcranks common axle actual control wires attached bellcranks mustnt forget engines double-up kick isnt unique Giants its still good idea provide glow plug heat two-cycle-powered Giants does keep plug lit idle rpm assures engine can accelerated after idling descent Itll take battery micro-switch thats turned throttle servo brought back idle gasoline-powered engines theres IMAA safety rule mandates servooperated engine cutoff cutoff works ignition circuit Theres nothing complicated about installing cutoff modelers add second manual button ground out Continued page 140 *DARNED GOOD AIRMEN Lightest weight Pilots Available .. * FULL BODY PILOT KIT Ltfellke Vitoyl aloe robber parts Easy assemble ord finish Kit eorttains Pilot head harods boots helmet cap goggles foil templates easy itstroctiorts Fully positiortable 100. Height- Weight-NEW Low Prtcas NO206 Scalelle2 oz S7 No205- /5 Scale14t o3 oz s8PL/r\L/ No204-1/4 Scale174oz S 9V IYV NO203-1/3 Scale23sBoa sl6 SPORTSMAN 01 550NSTORMPR- FULL 000001 OUSTAll R/C DGA Designs . OGA Designs 00 DA Designs e DGA Designs es OGA Designee S C C 01 0 S 0 0 0 0 o0 C C SC 0 0 0 05 c a01 z0 S 0 0 0 *BUST PILOT KIT Ltelle ohyl lot, at4be polIo ElI contaIns Plot head helmet spelt cap gooSes 04 JacketEasy assemble tinsy - Height Wtght- Low prises No 05OScale 3-10 340S NoteshOcole3-78t-tOOagOS 00OScele4-30t-t2oas7PP No OS ale 0-00 2-taos140P Aatosndng raallsttn attainable plastics.. OOcotothell odreme light easleht em completed cli 000401 PlOt ChehtSelllflaoellttlCOh0etteCtOfltfl8bOll1C0otdOdl0lClft 0 Send slOO tar Catalog S New Colt State Rasdeos add 75 sates lee. Sand check MO. COOs Allow 3 eese Cflepk clear S DGA Designs 0 DA @6 DGA Designs September 1987 51 Still Usingbld Fashioned Wing Hinges-You will gain control efficiency eliminating gap between moveable stationary control surfaces EASY TO INSTALL will amazed performance1/4 DEEP SLIT ALQi gained using simple inexpen-I MATAGSR~ LW THE sive improvement FREE MOVEMENT 450 STRONG AND LIGHTWEIGHT COMPLETELY FUELPROOF-2STRARSITPINTOMJA SAVALL HOLE EVERY RtICHOR COMPATABLE WITH ALL IRON-ONSo osia CE4AORYLATE GLUE IS Hais CAFELAER MATER IALSACl7CV 8TLL CARRY GLUE COMES iN 3 FT LENGTHSENOSE OiAtr SMALL 118 ORPRiCE 3 ft $250 _________________________________________IVSERT SMALL LARGE 114FOR ADD TSAIIdL SEC7t1Tl EVER ER RiICHES OtT OF F ISV L AdS SAltS AS ACEDED FOR FIAIISAPAS Send Free info fine products FOURMOST PRODUCTS 4040 24th Avenue Forest Grove OR 97116 GAPLESS HiNGE SLOTTER Simplifies installation Gapless Hingas Makes Slots 4 Siaes Balsa itI t CE $250 1 TRIM KNIFE Trim Knife designed precisely edge trim excess cover ing material model Can used outside edges straight curved Blade can set trom 1/16 1/4 simple adlustment screw Trim Knife mill make perfect overlap ous seams Works witn cover ig materials 6 blades Trim Knife Set includes 6 blades $900 Trim Knife Blades 5 per pack $300 m -IA No Notches Straight Cuts Heavy duty estra sharp no notch blade Same sice regular blades tip does flex cusing strip png thicker materials Great big birds Big Bird Blades box 100 blades$950 Trial size package 20 blades$250 RC Scale/Wischers Continued page 137 flights between charges Heavy flight loads single servo also place extra drain batteries Hobbypoxy colors Pettit Paint Co manufac turers Hobbypoxy products has published mulas mixing colors used contemporary Israeli Air Force aircraft colors Pale Green FS-34227 Tan FS-30219 Sand FS-33531 Light Gray FS-36622 Two colors Tan Light Gray same used contemporary USAF aircraft published column earlier formulas Light Gray 12 parts HIO White five parts H55 Cream two parts H70 Gray Tan five parts H65 Bright Red three parts HIO White two parts H49 Cub Yellow part H70 Gray part H81 Black Pale Green II parts H70 Gray seven parts H47 Bright Yellow part H24 Dark Blue part H Ifi White part H57 Bright Orange Sand 14 parts H55 Cream two parts H70 Gray part H65 Bright Red part HIO White Bob Dolly Wiseher 5-22] Lapham Peak Rd Delafield WI 530 J8 RC Old-Timers/Mathews Continued page 49 ials Lake Rocket City now Sig sure easy install particularly strip stock like use Old-Timers need cut slot wood knife slide hinge dry flow thin CyA glue seam bit stiff like Old-Timers control surface air loads usually low control inputs infrequent additional battery drain due stiff hinges likely insignificant Finally note some amusement other Old-Timer columnists another pub lication challenges us report onand take stand aboutthe raging dispute hassle over SAM Society Antique Modelers RC competition rules will compete national level primarily due sort hostility competition tends create what otherwise nice people included fore express own opinions would totally unfair intent column influence opinion rather create interest fascinating aspect hobby chronicle its history hope various sundry warring parties will soon recognize damage such attitudes doing will get back basic function recreational activity. enjoy what Its worth Ive spent last eight months developing ELT entry-level trainer trying combine aerodynamic parameters Old-Timer easier construction techniques contemporary design Talk about challenge sixth revision currently flying both OS 20 four-stroker K&B 20 Sportster two-stroker results develop ment flying perhaps significant worth comment friend flying site recently called attention OS four-stroker aw first Surpass series though advertised such correct Just take look bubbles head covers. high-lift cams forth have obviously used Further switching engines produces virtually no difference linear velocity models flight Conclusion least instance 20 four-stroker right 20 twostroker Dee B Mathews 909 Maize Rd Townhouse 734 Wichita KS 87212 RC Giant Scale/de Vries Continued page 51 ignitionone can reached safely outside model Im suggesting yet another servo-operated kill switch What Im saying safety redundancy manual switch such positive factors such switches should used much universally now subject good friend Ed Carrol suggested rather simple effective idea redundif transmitter adding couple wires plug switch Ed has dual-battened Krafts Futabas hes flown several times during day simple flip switch gives him freshly charged battery transmitter hes off two-day weekend Giant rally really doesnt have worry about having stay motel recharge trans mitter actual use Ed has stuck extra set transmitter batteries back case some Velcro doesnt look sexy system works like gangbusters have give credit inspiration column newfound friend John P Violette LaPlace LA Johns magnificent B-17G model appears months effort rather exten sive correspondence John fully documented history prototype Fortress Con gressional Medals Honor awarded its crewand developed what amounts complete history well Boeings letter Charles 0 Brown 8101 Sonar Rl Clinton MD 20735 Charlies gone route trying document specific Grumman Bearcat has come up empty Any out can provide photos anything concerned F8F-2 civilian llcense number N7700C flown air shows Bill Fornoff se drop Charlie line know Dan Lutz will happy see Boeing F4B-2 months column Since Dans picture know hes recovered its just physical recovery either since hes back workshop first met Dan gave SO-cent tour Kraft factory like fivebuck tour about 10 years ago Emil Agosta Dry Ridge Models 59 McCurry RdWeavervilleNC28787isatitagain Back designing beautiful Giant models latest J-4 Sportster -scale has span 114 1824 sq wing area Itll powered OS Max 91 FSR bones weigh tad under seven pounds guessti mate radio engine covering ultralight Scale model will top out between 12 13 lb prototype model flown Emil will probably offer drawings maybe kit Bill Hannans done another onel Volume 2 Intern ational Peanuts & Pistachios out 140 Model Aviation INTERCEPTOR Ready Fly $695 U build Kit $4 95 Note Please odd $3 P & H 1st 3 models Add tO % price additional model COMPANY PO Box 68132 Portland OR 97268 Fokker D-VII VK Model Aircraft PO Box 3007 Aurora IL 60505 312-357-1883 contains six drawings time around em look suitable quarter-scale larger treatment last drawing book MiniMax ultralight shows powered Rotax engine dedicated Scale nut could build model use Supertigre 2500 power Supertigre minimum cosmetic additions could easily pass scale engine Bills latest book available $495 plus $150 P&H PO Box Escondido CA 92025 hell autograph no extra charge Finally Fred Wallman promised set scale landing gear parts eternal quarterscale Ryan B-5 thats filling local workshop past three years has made great progress Hes developed some sporty-looking drawings looks like gearll fit perfectly interim hes also come up neat method making swirls Ryan cowling quarter-scale swirls have diameter make aluminum printers plate sheets using drill press -in dowel mandrel some 150-grit sand paper glued its base actual cowling sections will cut swirled aluminum aid pre-fitted cardboard templates John de Vries 4610 MoffatLn Colorado Springs CO 80915 RCHelicopters Continued page 53 obo Kalt someone starts importing again Kobe really surprised just realistic Kobe-made Hughes looks air Im going add Du-Bro -scale pilot figure soon have time paint up addition will look realistic side beneflt flying gasoline-powered Helicopters because low oil content fuel virtually nothing clean up after flying session Just wipe off concrete grime charge batteries fill tank go fly again Hughes 300 stays track has needed no maintenance far could attributed part Dave Robertsons skill assembling model credit must also given Kobes robust design Like said before hope someone out finds way overcome yen/dollar problem decides import Kobe line Flying Hughes 300 such neat experi ence wish could share BCNU Larry Jolly 5501 W Como Santa Ana CA 92703 RC Pylon Racing/HagerPlanarlan/Wainfan Continued page 54Continued page 56 15 Pt Jeff Faleo 15 Pt Lee Pohar 14 Pt Ori Steinmetz 12 Pt Dino Goegan 12 Pt Dick Shields 12 Pt Dan Kane Sr 11 Pt Bob Loehner 9 Pt Bob Bentley 8 pt Tom Barrett 8 Pt Ron Jacobs 8 pt Bruce Balko 6 Pt J&ry Aarsted6 Pt Scott Justice 5 Pt Bob Lyttle 5 Pt Dave Smith 2 Pt Fastest time 13969 went Dan Kane Jr Thanks participants thanks Orv Steinmetz interesting entertaining report See next month Bill Hager 706 Glen Haven Dr Conroe IX 77385 tical canted either fore aft laterally next step add upper longerons form side cabin should first attached trailing edge bent position sure bottom fuselage securely pinned down building board before adding top longerons will lift up warp bent place Once upper longerons have attached cabin top cross members side diagonals canard bearers installed putting canard bearers sure details other Zimbabwe Model Products kits call write Full color deluxe catalog-SI 00 C--ZIMPRO MARKETING Manufactuers Repesentatnve & npo e s o P ne can Poductsp PO BOX 3076 OAK RIDGE TENNESSEE 37830 Tel 615482-6188 September 1987 141 AIR WOLF EPOXY FIBERGLASS FUSELAGE S TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $20000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 Z n 526 ALL BALSA ARF KIT features pre-assembled wood ply fuselage fully sheeted wings stab & rudder epoxy cowl Lexan canopy hardware
Edition: Model Aviation - 1987/09
Page Numbers: 50, 51, 140, 141
Radio Control Giant Scale John de Vries Colonel USAF Ret REDUNDANT key word month rather 11 talk about redundancy Giant Scale models decided advantage Big builders have over compatriots havent gotten word yet models 99 out 100 instances capable carrying smidgen extra weight lets us add number redundant bits pieces equip ment resulting installation goes toward making models much safer fly Early Giant movement modelers discovered need double-up servos control flying surfaces talking about separate servo aileron dual servos rudder elevators Admittedly early days Big Birds servos generated about 40 in-oz torque wasnt unusual find model flying surfaces could blown down air loads double doses servo power werent available us have continued practiceeven though Giant servos availableto main tain redundancy control systems models course Y-connected servos require long servo-wire leads feature sometimes makes radios subject RF interference picked up long leads However weve gotten around problem putting chokes leads As result have strong control systems respond just way want Moving bit further down redundancy road Ace R/C others designed redundant battery systems Since weak link RC systems inevitable Ni-Cd battery pack redundant batteries have saved uncounted hard BJ MeyerHickoryCreek TX painted Balsa USA Phaeton9O L represent flag Lone Star state Daughter Elaine stands beside Maloney 100-powered model will soon carry 8mm movie camera J-4 SportsterultralightAbove 1/3-scale Emil Agostas Weaverville NC latest design intends power 11 4-in-span bird OS Max 91 FSR 50 Model Aviation John P Violette LaPlace LA 1/10-scale Westcraft 9-17G Four ST 75s power its 40-lb weight Wingspan 18120 Radio system usesAce R/C redundantbatterysystem two receivers John has thoroughiy documented both prototype aircraft its medalwinning crew Landing gear retraction mechanism worm-gear type Dan Lutz Falibrook CA Boeing F4B-2 models top-line Navy fighter Thirties its Quadra 35 may exchanged Q40 help lift crafts 221/i-lb weight landings Using twin 1200 mAli receiver/servo batteries automatic switch-over event battery failure just plain common sense Today isnt unusual find Giant Scale model contains two receivers may both tuned same transmitter exotic installations second receiver may tuned second backup transmitter Its good idea youre going doublereceiver route install model separated far possible will minimize mutual interference particularly two RC fre quencies used Twin receivers amount complete may use word again totally redundant control system Add dual-battery system talked about above probability successful model flight goes up astronomically best part whole exercise model weight increased nominallya pound less some other things can improve effects redundant radio/battery system example can choose control side elevator system other side receiver number two works well larger Giants will practically assure flap back model will continue function doesnt take too much horseback engineer ing run two sets rudder controls either rudders dual servos can set run tail wheel its primary control function secondary control rudder other can set up run rudder primary second ary function being tail wheel simply paralleling pushrods have won local state lottery may inclined double-servo ailerons too certainly wont hurt completely dual-control model youre inclined toward use cable control systems closed-loop method has much recommend Both sides servo control arm connected control surface hornsas prototype control cable installa tions loss single cable will thus have minimal adverse effect Admittedly its bit fussier connect four cables servo arm case elevator control two Ups two Downs example efforts worth course youll have find suitable locations extra pulley wheels direct control wires within model theyre needed Usually ever can parallel wires through paired pulleysfollowing prototype practice too use bellcrank idlers can help put wires want short pushrod servo drives bellcranks common axle actual control wires attached bellcranks mustnt forget engines double-up kick isnt unique Giants its still good idea provide glow plug heat two-cycle-powered Giants does keep plug lit idle rpm assures engine can accelerated after idling descent Itll take battery micro-switch thats turned throttle servo brought back idle gasoline-powered engines theres IMAA safety rule mandates servooperated engine cutoff cutoff works ignition circuit Theres nothing complicated about installing cutoff modelers add second manual button ground out Continued page 140 *DARNED GOOD AIRMEN Lightest weight Pilots Available .. * FULL BODY PILOT KIT Ltfellke Vitoyl aloe robber parts Easy assemble ord finish Kit eorttains Pilot head harods boots helmet cap goggles foil templates easy itstroctiorts Fully positiortable 100. Height- Weight-NEW Low Prtcas NO206 Scalelle2 oz S7 No205- /5 Scale14t o3 oz s8PL/r\L/ No204-1/4 Scale174oz S 9V IYV NO203-1/3 Scale23sBoa sl6 SPORTSMAN 01 550NSTORMPR- FULL 000001 OUSTAll R/C DGA Designs . OGA Designs 00 DA Designs e DGA Designs es OGA Designee S C C 01 0 S 0 0 0 0 o0 C C SC 0 0 0 05 c a01 z0 S 0 0 0 *BUST PILOT KIT Ltelle ohyl lot, at4be polIo ElI contaIns Plot head helmet spelt cap gooSes 04 JacketEasy assemble tinsy - Height Wtght- Low prises No 05OScale 3-10 340S NoteshOcole3-78t-tOOagOS 00OScele4-30t-t2oas7PP No OS ale 0-00 2-taos140P Aatosndng raallsttn attainable plastics.. OOcotothell odreme light easleht em completed cli 000401 PlOt ChehtSelllflaoellttlCOh0etteCtOfltfl8bOll1C0otdOdl0lClft 0 Send slOO tar Catalog S New Colt State Rasdeos add 75 sates lee. Sand check MO. COOs Allow 3 eese Cflepk clear S DGA Designs 0 DA @6 DGA Designs September 1987 51 Still Usingbld Fashioned Wing Hinges-You will gain control efficiency eliminating gap between moveable stationary control surfaces EASY TO INSTALL will amazed performance1/4 DEEP SLIT ALQi gained using simple inexpen-I MATAGSR~ LW THE sive improvement FREE MOVEMENT 450 STRONG AND LIGHTWEIGHT COMPLETELY FUELPROOF-2STRARSITPINTOMJA SAVALL HOLE EVERY RtICHOR COMPATABLE WITH ALL IRON-ONSo osia CE4AORYLATE GLUE IS Hais CAFELAER MATER IALSACl7CV 8TLL CARRY GLUE COMES iN 3 FT LENGTHSENOSE OiAtr SMALL 118 ORPRiCE 3 ft $250 _________________________________________IVSERT SMALL LARGE 114FOR ADD TSAIIdL SEC7t1Tl EVER ER RiICHES OtT OF F ISV L AdS SAltS AS ACEDED FOR FIAIISAPAS Send Free info fine products FOURMOST PRODUCTS 4040 24th Avenue Forest Grove OR 97116 GAPLESS HiNGE SLOTTER Simplifies installation Gapless Hingas Makes Slots 4 Siaes Balsa itI t CE $250 1 TRIM KNIFE Trim Knife designed precisely edge trim excess cover ing material model Can used outside edges straight curved Blade can set trom 1/16 1/4 simple adlustment screw Trim Knife mill make perfect overlap ous seams Works witn cover ig materials 6 blades Trim Knife Set includes 6 blades $900 Trim Knife Blades 5 per pack $300 m -IA No Notches Straight Cuts Heavy duty estra sharp no notch blade Same sice regular blades tip does flex cusing strip png thicker materials Great big birds Big Bird Blades box 100 blades$950 Trial size package 20 blades$250 RC Scale/Wischers Continued page 137 flights between charges Heavy flight loads single servo also place extra drain batteries Hobbypoxy colors Pettit Paint Co manufac turers Hobbypoxy products has published mulas mixing colors used contemporary Israeli Air Force aircraft colors Pale Green FS-34227 Tan FS-30219 Sand FS-33531 Light Gray FS-36622 Two colors Tan Light Gray same used contemporary USAF aircraft published column earlier formulas Light Gray 12 parts HIO White five parts H55 Cream two parts H70 Gray Tan five parts H65 Bright Red three parts HIO White two parts H49 Cub Yellow part H70 Gray part H81 Black Pale Green II parts H70 Gray seven parts H47 Bright Yellow part H24 Dark Blue part H Ifi White part H57 Bright Orange Sand 14 parts H55 Cream two parts H70 Gray part H65 Bright Red part HIO White Bob Dolly Wiseher 5-22] Lapham Peak Rd Delafield WI 530 J8 RC Old-Timers/Mathews Continued page 49 ials Lake Rocket City now Sig sure easy install particularly strip stock like use Old-Timers need cut slot wood knife slide hinge dry flow thin CyA glue seam bit stiff like Old-Timers control surface air loads usually low control inputs infrequent additional battery drain due stiff hinges likely insignificant Finally note some amusement other Old-Timer columnists another pub lication challenges us report onand take stand aboutthe raging dispute hassle over SAM Society Antique Modelers RC competition rules will compete national level primarily due sort hostility competition tends create what otherwise nice people included fore express own opinions would totally unfair intent column influence opinion rather create interest fascinating aspect hobby chronicle its history hope various sundry warring parties will soon recognize damage such attitudes doing will get back basic function recreational activity. enjoy what Its worth Ive spent last eight months developing ELT entry-level trainer trying combine aerodynamic parameters Old-Timer easier construction techniques contemporary design Talk about challenge sixth revision currently flying both OS 20 four-stroker K&B 20 Sportster two-stroker results develop ment flying perhaps significant worth comment friend flying site recently called attention OS four-stroker aw first Surpass series though advertised such correct Just take look bubbles head covers. high-lift cams forth have obviously used Further switching engines produces virtually no difference linear velocity models flight Conclusion least instance 20 four-stroker right 20 twostroker Dee B Mathews 909 Maize Rd Townhouse 734 Wichita KS 87212 RC Giant Scale/de Vries Continued page 51 ignitionone can reached safely outside model Im suggesting yet another servo-operated kill switch What Im saying safety redundancy manual switch such positive factors such switches should used much universally now subject good friend Ed Carrol suggested rather simple effective idea redundif transmitter adding couple wires plug switch Ed has dual-battened Krafts Futabas hes flown several times during day simple flip switch gives him freshly charged battery transmitter hes off two-day weekend Giant rally really doesnt have worry about having stay motel recharge trans mitter actual use Ed has stuck extra set transmitter batteries back case some Velcro doesnt look sexy system works like gangbusters have give credit inspiration column newfound friend John P Violette LaPlace LA Johns magnificent B-17G model appears months effort rather exten sive correspondence John fully documented history prototype Fortress Con gressional Medals Honor awarded its crewand developed what amounts complete history well Boeings letter Charles 0 Brown 8101 Sonar Rl Clinton MD 20735 Charlies gone route trying document specific Grumman Bearcat has come up empty Any out can provide photos anything concerned F8F-2 civilian llcense number N7700C flown air shows Bill Fornoff se drop Charlie line know Dan Lutz will happy see Boeing F4B-2 months column Since Dans picture know hes recovered its just physical recovery either since hes back workshop first met Dan gave SO-cent tour Kraft factory like fivebuck tour about 10 years ago Emil Agosta Dry Ridge Models 59 McCurry RdWeavervilleNC28787isatitagain Back designing beautiful Giant models latest J-4 Sportster -scale has span 114 1824 sq wing area Itll powered OS Max 91 FSR bones weigh tad under seven pounds guessti mate radio engine covering ultralight Scale model will top out between 12 13 lb prototype model flown Emil will probably offer drawings maybe kit Bill Hannans done another onel Volume 2 Intern ational Peanuts & Pistachios out 140 Model Aviation INTERCEPTOR Ready Fly $695 U build Kit $4 95 Note Please odd $3 P & H 1st 3 models Add tO % price additional model COMPANY PO Box 68132 Portland OR 97268 Fokker D-VII VK Model Aircraft PO Box 3007 Aurora IL 60505 312-357-1883 contains six drawings time around em look suitable quarter-scale larger treatment last drawing book MiniMax ultralight shows powered Rotax engine dedicated Scale nut could build model use Supertigre 2500 power Supertigre minimum cosmetic additions could easily pass scale engine Bills latest book available $495 plus $150 P&H PO Box Escondido CA 92025 hell autograph no extra charge Finally Fred Wallman promised set scale landing gear parts eternal quarterscale Ryan B-5 thats filling local workshop past three years has made great progress Hes developed some sporty-looking drawings looks like gearll fit perfectly interim hes also come up neat method making swirls Ryan cowling quarter-scale swirls have diameter make aluminum printers plate sheets using drill press -in dowel mandrel some 150-grit sand paper glued its base actual cowling sections will cut swirled aluminum aid pre-fitted cardboard templates John de Vries 4610 MoffatLn Colorado Springs CO 80915 RCHelicopters Continued page 53 obo Kalt someone starts importing again Kobe really surprised just realistic Kobe-made Hughes looks air Im going add Du-Bro -scale pilot figure soon have time paint up addition will look realistic side beneflt flying gasoline-powered Helicopters because low oil content fuel virtually nothing clean up after flying session Just wipe off concrete grime charge batteries fill tank go fly again Hughes 300 stays track has needed no maintenance far could attributed part Dave Robertsons skill assembling model credit must also given Kobes robust design Like said before hope someone out finds way overcome yen/dollar problem decides import Kobe line Flying Hughes 300 such neat experi ence wish could share BCNU Larry Jolly 5501 W Como Santa Ana CA 92703 RC Pylon Racing/HagerPlanarlan/Wainfan Continued page 54Continued page 56 15 Pt Jeff Faleo 15 Pt Lee Pohar 14 Pt Ori Steinmetz 12 Pt Dino Goegan 12 Pt Dick Shields 12 Pt Dan Kane Sr 11 Pt Bob Loehner 9 Pt Bob Bentley 8 pt Tom Barrett 8 Pt Ron Jacobs 8 pt Bruce Balko 6 Pt J&ry Aarsted6 Pt Scott Justice 5 Pt Bob Lyttle 5 Pt Dave Smith 2 Pt Fastest time 13969 went Dan Kane Jr Thanks participants thanks Orv Steinmetz interesting entertaining report See next month Bill Hager 706 Glen Haven Dr Conroe IX 77385 tical canted either fore aft laterally next step add upper longerons form side cabin should first attached trailing edge bent position sure bottom fuselage securely pinned down building board before adding top longerons will lift up warp bent place Once upper longerons have attached cabin top cross members side diagonals canard bearers installed putting canard bearers sure details other Zimbabwe Model Products kits call write Full color deluxe catalog-SI 00 C--ZIMPRO MARKETING Manufactuers Repesentatnve & npo e s o P ne can Poductsp PO BOX 3076 OAK RIDGE TENNESSEE 37830 Tel 615482-6188 September 1987 141 AIR WOLF EPOXY FIBERGLASS FUSELAGE S TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $20000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 Z n 526 ALL BALSA ARF KIT features pre-assembled wood ply fuselage fully sheeted wings stab & rudder epoxy cowl Lexan canopy hardware