MOUSE RACING months photos focus /2A Mouse Racing photo taken Tree Town Modelaires Memorial Day con test shows entry Junior contestant Da vid Schuette being pitted dad Jim little models tricky pit youre using spring starter engine can see both inboard outboard wings ing stabilized spring starter being en gaged wound further advantage stabiliz ing plane manner pilot can assured plane angled either towards away center circle its released thereby allowing smooth takeoff Another photo shows unfortunate incident Mouse Racing Northwest Regionals Open event severe line tangle pi lots heat Remi Dawson Canada dark-colored jacket Bob Boling El Cer rito CA rain hood Tom Knoppi Portland OR Remis plane crashed lines other two fliers remained tangled Remi remaining two planes went Steadying both wings engaging/wind ing spring starter Mouse Racer three pilots went down after line tangle Mousetwo still trying keep planes under control crashed Fuel shutoffs required Mouse Racers might have saved day Photo Hawk GRAIN0 PLYRUDDERf TAIL SKID BLOCK 3/i HARD BALSA BARRACUDA WING MOD% LIGHT BALSASPRUCE modifications Barracuda Quickie Rat see July 1988 column aimed im proving its reliability longevity explanations months column wires wound around pilots also hit dirt Tom Knoppi can seen still trying fly plane hes sitting down can also see pitman John McCollum back camera has rushed try untangle things Theresa Byerly L Wesley Mullins doing good careful job Junior Mouse Racing Northwest Regionals Hawk FILL/VENT UNIFLOW TANK OVERFLOW1 FUEL TUBING LiPINCHER OUTBOARD j~-4 WHEEL COLLAR COMPRESSION SPRING TOP VIEW OF FUSELAGE TANK OMITTED FOR CLARITY L 1As MW PINCHER Heres neat gadget pinching off overflow tube suction-feed fuel tank points out deficiencies Mouse Racers dont have fuel shutoffs planes equipped pilots could have shut down saved planes other race Larry Dziak should have used spruce wing spars instead balsa ones Slow Rat Structural failure occurred shaking down plane pit stop As speeds keep going up need stronger planes becomes more evident 82 Model Aviation Control Lbe Racing John Ballard 10102 Kimblewlck Dr LouisvIlle KY 40223 John McCollum pits famous McMoue Racer Note knee pad kneeling comfort battery lead taped arm prevent its catching plane during launch want win Racing its small things can really count Mike Hawk photo Continued page 183 BYRON ORIGI NALSINCf 5oI U5 3M-i Pitts Special continues provide modelers enjoyable RIO experience second-to-none its fast easy-building injection molded foam design its spectacular aerobatic flight characteristics thrill owning Byron Pitts will never grow old just ask proud owner nine years has over 600 flights Puffs first Complete Kit-Concept packages last item necessary finish basic aircraft cluded items like tires fuel tank specialized hardware part package add glue radio engine choice final finish youre looking unique experience Pills S~ciat See Local Byron Dealer Today Full Line Byron Kits Accessories Fuels Byron Originals Inc ox 279 Grove IA 51445 12/364-3165 Step Twelve Soak tank alcohol lac quer thinner run hot tap water through tank flush out grindings Step Thirteen Place end tank over piece 005-in brass shim stock pencil outline brass Remove tank scribe outline brass allowing A-in over lap sides solder flaps Cut out end piece Bend flaps position part end tank check fit Remove end piece pretin solder flaps edges tank will mate Put end back tank solder place Start soldering iron corner move iron around tank until smooth fillet formed Clean tank thor oughly both inside out check seams voids pinholes YB jp TL8 3 /AJ , Thee IMS6TEO INTO 8 4 4 P~ 7iee air pickup tube See also Table B nested tubes soldered together plugging solder Step Fourteen Repeat Step Thirteen other end cap tank Step Fifteen Immerse completed tank flux solvent lacquer thinner several hours Slosh tank fluid make sure inte rior tank clean Step Sixteen Check tank leaks con necting fuel pickup overflow tubes piece fuel line Place long piece fuel line air pickup tube Immerse tank ba sin water put free end fuel line mouth blow Look air bub bles escaping forming solder joints tank Rework required Step Seventeen Use bunch elbow grease buffing exterior tank steel wool want look good dont Plug tubes first Step Eighteen Rough up inside speed pan heavy sandpaper plan mount fuel tank Rough up part tank will mate pan similar manner thoroughly clean both tank pan before applying RTV adhesive area Press tank place keep under light pressure RTV sets Any RTV adhesives market will work application RTV -temperature-vulcanizingEd Step Nineteen Form free end air pickup tube away side fuselage Appropriate gaps % hA % B end air pickup tube should positioned faces propeller airflow hope loyal readers enjoyed article takes immense amount work pull such piece together thanks once again Nick Sher help Thats time Please remember gather up bits pieces information photos etc have lying around Mail inclusion CL Speed column CL Racing/Ballard continued page 82 Another photographer Hawks photos event shows two Juniors doing excellent job piloting Theresa Byerly Wesley Mullins weather must have chilly day having fuel shutoffs Mouse Racers definitely subject damage line tangles some other unfortunate incidentoccur have seen several cases engine has started backwards pit stop fact has apparent pitman plane released moved backwards lap two until either engine quit someone man aged capture Such embarrassing incidents could have prevented fuel shutoffs installed extremely important competitor multiple-pilot Racing events have overview activities occurring Obviously must con trol own aircraft behooves him ob serve other pilots enter exit cir cle aware flying styles other pilots will help eliminate confu sion resulting unfortunate crash competitors plane landing home pit ting area secrets flying good race have smooth efficient pitman pho tos shows John McCollum pitting famed McMouse Northwest Regionals Note has plane well stabilized refuels has cord glow plug battery taped arm cant get entangled plane Hes also wearing kneeling pad ease pain kneeling hard surface dur October 1989 183 building flying select Byron Puffs next P/C project--thousands other satisfied customers have detailed InfoPack send $200 Catalogs just $300 RC DESIGNS pleased introduce Weasel customizable monoplane SPECIFICATIONS Engine size40-502 cycle Radio4 channel Weight4-b lbs FuselageEpoxy-Glass WingFoam & Balsa Tail SectionBalsa Cowl Epoxy Glass e molded Balsa & necessary hardware included Over two years d6sign development have gone Weasel YOU mind detailed easy understand instructions make Weasel quick build fun fly Advanced Sport Pattern flyers will appreciate excellent flying characteristics ability customize airframe suit eye need Weasel can pour power tear up sky pull back cruise afternoon away Designed & Engineered RC DESIGNS 75 Price Drive Wilmington Ohio 45177 513382-2158 Hrs 4-8 pm12-6 pm Man-FriSaturdays ing pit stop As have mentioned before popularity Mouse Racing has increase 88 far 89 Racing season Slow Rat Alt Racing competitors aware performance speed 35-powered high-tech Slow Rat model As speeds get ever faster due competitors improving engine/tank combinations propellers wind shear planes airframes goes up drastically pilot Slow Rat trips fuel shutoff plane traveling 125-140 mph commences shake down lose airspeed quickly tre mendous stresses applied wings Present-day Slow Rats dont use MonoKote silk coverings Wings completely sheeted /l6 balsa added strength recent Tree Town contest Larry Dziaks Slow Rat lost outboard wing during shake-down procedure Shaking down Racer involves ra pid successive full-Up/full-Down elevator con trol input resulting rapid up/down pitching model causes airspeed bleed off quickly enabling pilot land have plane moving slowly enough pitman can grab easily photos shows wrecked plane factor caused Larrys problem upper lower wing spars balsawood instead spruce hardwood wing spruce leading edge some terior / plywood lamination stress wing balsa spars could stand Any Racing enthusiast planning Slow Rat project should include Ia-in-sq spruce upper lower wing spars Quickie Rat improvements Racing buffs will recall July 1988 column featured Texas Quickie Rat called Barracuda event quite popular Dallas area included supplementary event Lake Charles AMA Nats Race times event now mid-16-sec range best race time 140 laps 607 New rules ing discussed fall 1989 reduce en gine venturi bore 315 30 seen necessary reduce speed planes three-up Racing will little manage able Bill Bischoff has indicated will have Bar racuda kits Out soon will com plete fuel tank fuel shutoff engine mount necessary hardware month am en closing some Barracuda modifications will improve both performance ease pit ting Wing To make wing strong possible add x 3/8-in full-span spruce spar joint between leading edge existing maple spar balsa will make wing quite bit stiffer Use medium-hard wood front portion wing ahead spruce spar light wood rear portion will reduce overall weight sacrificing strength Rudder occasions Racer flips over its back Perhaps catch missed control line snags ground present Barracuda de sign features second elevator control horn top elevator line fuel shut off attached plane flips over second control horn will receive very solid smack ground/hardtop generally cracks elevator around hinges addi tion small plywood rudder merely protects top-mounted control horn impacting ground during flipover grain outer plywood skins should run vertically top hardwood engine mount extension should grooved accept rudder thereby allowing stronger joint made Overflow pincher sport-type Racing events such Formula Unlimited and/or Quickie Rat require use nonpressurized fuel tanks desirable use tank socalled uniflow design Typically overflow line such tank pinched off after filling tank means al ligator clamp mounted tankthe scheme use Slow Rat sketch months column shows different gadget ing same job involves use music-wire pincher flexible fuel overflow vent line pincher wire extends through fuse lage has coil spring other side ap ply pinch wheel collar end hold everything together tank being filled pitman pushes wheel collar against fuselage thereby releasing pinch overflow vent line tank full wheel collar set free whereupon spring causes pincher wire pinch vent line shut device easy make very reliable can installed lo cation easy reach Remember uniflow-style fuel tank installation build Barracuda modifica tions let know performs Northwest Super Sport Race John Thompson Cottage Grove OR has sent copy 1989 rules event type Racing another aimed beginner intermediate-level participant hope can experience CL Racing having make financial investment needed fly success bigger Racing events Continued page 188 184 Model Aviation THESE NEW KITS CONTAIN CLEAR PLASTIC FuSELAGE VELCRO FAING MALR E. HARDWARE HUGHES 530F KIT INCLUDES METAL LANDING GEAR STRUTS & CLAMPS ILLUSTRATED Y STEP INSTRI NS E & G Enterprises ializIng Vacuum Formed Helicopter Fuselages er Inquiries Invited II Available Al Local Dealer Call Direct J 23015 Del Lago # 0-2 na Hills CA 92653 our Ordering/Message Recorder 714 859-2030 Kit Price. $9695 Terms US currency accept Mastecad & Visa corns $300 Pp $450 $350 HacOlieg tesideols add 6% sales tao ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE model built rules should able flown pitted intermediate-level partici pants rules appear work successfully drizzle circuit could used Rac ing enthusiasts other areas country Basically rules follow AMA Slow Rat Event 312 rules Deviations AMA rules areas engine requirements fuel tank design pull-test control line specifica tion quote Northwest rules respect engine all operate suction feed engine shall plain-bearing type single bypass intake port No variable in-flight adjusting carburetors allowed used AMA Slow Rat Race however other modification intake permissible also no restriction regarding engine rework ex cept major components shall produced original manufacturer no nonfactory material may added engine respect fuel tank cated outboard side fuselage tank may designed cowl en gine Pull test 35 lb Lines stranded construction Propellers Scale Racing have asked several Racers typical starting point Scale Race prop generally use KellyWizard III McCollum/Garner-type Scale Racing propeller After removing flashing Kelly prop will generally require thinning pitch distribution both props should follows measured Prather prop gauge Station I3 3 pitch Station II3 4 pitch Station 1114 4 pitch Station V4/2 pich Station VI43A pitch Station VII5 pitch Station VIII54 pitch After props pitched thin upper sur face blade tips around 025030 thick carefully balance prop using dynamic balancer general length prop will 6 however have found some engines require 63/5-in prop some blade short 6A will have try several propeller mod ifications both test stand flight plane/engine combination achieve maxi mum speeds As always solicit comments photos Texas Wildcat/Darkow Continued page 87 edge flat surface being careful keep straight Glue rear wing ribs lower half trailing edge leaving / clearance back Glue up per half trailing edge rear lower half wing ribs Remove wing building board Mark wing rib locations 2-in intervals A-in leading edge glue ribs place Rubberbands may used hold everything together After checking alignment carefully glue ribs spars Add leading edge planking complete D-tube spar wing will become quite rigid Plank cen ter section install cap strips glue shape tips Set wing aside time being drilling holes strut fittings 1uselage Cut upper lower halves shape two pieces /2 x 3 x 36-in medium-soft balsa Join center line Make cutouts wing tween engine mounts Epoxy engine mounts place Cut /16 ply nose doublers shape glue fuselage Drill landing gear mount holes through lower engine mount indicated plan Glue %2OD brass tubes holes flush fuselage sides Drill %-in holes en gine bellcrank mounts dummy ex hausts drill 12A-in holes %-in centers shown plan glue 1-in lengths A-in doweling holes Tail assembly Cut rudder stabilizer elevator shape Join elevator halves strip /6 x A-in spruce Join elevator stabilizer nylon hinges Cut out stabilizer slot glue tail assembly fuselage being care ful maintain correct alignment Mount /32 wire tail skid spruce block glue unit notch rear fu 188 Model Aviation TWO NEW FLIGHT BOXES Completely assembled finished Made uSA Both top qsatity wood COnOtruction Two large drawers unique drawer locka small boo 0 plun shipping large boo $12500 plus shipping includes met compartmentbattery/power panel compartmentadlustable fuselage Cradles Mosey back guarastee Send SI tsr apace call 14151 747-O$47 leave meseage Flights Fancy Aesmudellng P0 Boo La Honda Ca B4020 CL Racing/Ballard Continued page 184 ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE CULPEPPER MODELS INC 2526 Washington DnbuqmeIA 52001 3191583-4830
Edition: Model Aviation - 1989/10
Page Numbers: 82, 183, 184, 188
MOUSE RACING months photos focus /2A Mouse Racing photo taken Tree Town Modelaires Memorial Day con test shows entry Junior contestant Da vid Schuette being pitted dad Jim little models tricky pit youre using spring starter engine can see both inboard outboard wings ing stabilized spring starter being en gaged wound further advantage stabiliz ing plane manner pilot can assured plane angled either towards away center circle its released thereby allowing smooth takeoff Another photo shows unfortunate incident Mouse Racing Northwest Regionals Open event severe line tangle pi lots heat Remi Dawson Canada dark-colored jacket Bob Boling El Cer rito CA rain hood Tom Knoppi Portland OR Remis plane crashed lines other two fliers remained tangled Remi remaining two planes went Steadying both wings engaging/wind ing spring starter Mouse Racer three pilots went down after line tangle Mousetwo still trying keep planes under control crashed Fuel shutoffs required Mouse Racers might have saved day Photo Hawk GRAIN0 PLYRUDDERf TAIL SKID BLOCK 3/i HARD BALSA BARRACUDA WING MOD% LIGHT BALSASPRUCE modifications Barracuda Quickie Rat see July 1988 column aimed im proving its reliability longevity explanations months column wires wound around pilots also hit dirt Tom Knoppi can seen still trying fly plane hes sitting down can also see pitman John McCollum back camera has rushed try untangle things Theresa Byerly L Wesley Mullins doing good careful job Junior Mouse Racing Northwest Regionals Hawk FILL/VENT UNIFLOW TANK OVERFLOW1 FUEL TUBING LiPINCHER OUTBOARD j~-4 WHEEL COLLAR COMPRESSION SPRING TOP VIEW OF FUSELAGE TANK OMITTED FOR CLARITY L 1As MW PINCHER Heres neat gadget pinching off overflow tube suction-feed fuel tank points out deficiencies Mouse Racers dont have fuel shutoffs planes equipped pilots could have shut down saved planes other race Larry Dziak should have used spruce wing spars instead balsa ones Slow Rat Structural failure occurred shaking down plane pit stop As speeds keep going up need stronger planes becomes more evident 82 Model Aviation Control Lbe Racing John Ballard 10102 Kimblewlck Dr LouisvIlle KY 40223 John McCollum pits famous McMoue Racer Note knee pad kneeling comfort battery lead taped arm prevent its catching plane during launch want win Racing its small things can really count Mike Hawk photo Continued page 183 BYRON ORIGI NALSINCf 5oI U5 3M-i Pitts Special continues provide modelers enjoyable RIO experience second-to-none its fast easy-building injection molded foam design its spectacular aerobatic flight characteristics thrill owning Byron Pitts will never grow old just ask proud owner nine years has over 600 flights Puffs first Complete Kit-Concept packages last item necessary finish basic aircraft cluded items like tires fuel tank specialized hardware part package add glue radio engine choice final finish youre looking unique experience Pills S~ciat See Local Byron Dealer Today Full Line Byron Kits Accessories Fuels Byron Originals Inc ox 279 Grove IA 51445 12/364-3165 Step Twelve Soak tank alcohol lac quer thinner run hot tap water through tank flush out grindings Step Thirteen Place end tank over piece 005-in brass shim stock pencil outline brass Remove tank scribe outline brass allowing A-in over lap sides solder flaps Cut out end piece Bend flaps position part end tank check fit Remove end piece pretin solder flaps edges tank will mate Put end back tank solder place Start soldering iron corner move iron around tank until smooth fillet formed Clean tank thor oughly both inside out check seams voids pinholes YB jp TL8 3 /AJ , Thee IMS6TEO INTO 8 4 4 P~ 7iee air pickup tube See also Table B nested tubes soldered together plugging solder Step Fourteen Repeat Step Thirteen other end cap tank Step Fifteen Immerse completed tank flux solvent lacquer thinner several hours Slosh tank fluid make sure inte rior tank clean Step Sixteen Check tank leaks con necting fuel pickup overflow tubes piece fuel line Place long piece fuel line air pickup tube Immerse tank ba sin water put free end fuel line mouth blow Look air bub bles escaping forming solder joints tank Rework required Step Seventeen Use bunch elbow grease buffing exterior tank steel wool want look good dont Plug tubes first Step Eighteen Rough up inside speed pan heavy sandpaper plan mount fuel tank Rough up part tank will mate pan similar manner thoroughly clean both tank pan before applying RTV adhesive area Press tank place keep under light pressure RTV sets Any RTV adhesives market will work application RTV -temperature-vulcanizingEd Step Nineteen Form free end air pickup tube away side fuselage Appropriate gaps % hA % B end air pickup tube should positioned faces propeller airflow hope loyal readers enjoyed article takes immense amount work pull such piece together thanks once again Nick Sher help Thats time Please remember gather up bits pieces information photos etc have lying around Mail inclusion CL Speed column CL Racing/Ballard continued page 82 Another photographer Hawks photos event shows two Juniors doing excellent job piloting Theresa Byerly Wesley Mullins weather must have chilly day having fuel shutoffs Mouse Racers definitely subject damage line tangles some other unfortunate incidentoccur have seen several cases engine has started backwards pit stop fact has apparent pitman plane released moved backwards lap two until either engine quit someone man aged capture Such embarrassing incidents could have prevented fuel shutoffs installed extremely important competitor multiple-pilot Racing events have overview activities occurring Obviously must con trol own aircraft behooves him ob serve other pilots enter exit cir cle aware flying styles other pilots will help eliminate confu sion resulting unfortunate crash competitors plane landing home pit ting area secrets flying good race have smooth efficient pitman pho tos shows John McCollum pitting famed McMouse Northwest Regionals Note has plane well stabilized refuels has cord glow plug battery taped arm cant get entangled plane Hes also wearing kneeling pad ease pain kneeling hard surface dur October 1989 183 building flying select Byron Puffs next P/C project--thousands other satisfied customers have detailed InfoPack send $200 Catalogs just $300 RC DESIGNS pleased introduce Weasel customizable monoplane SPECIFICATIONS Engine size40-502 cycle Radio4 channel Weight4-b lbs FuselageEpoxy-Glass WingFoam & Balsa Tail SectionBalsa Cowl Epoxy Glass e molded Balsa & necessary hardware included Over two years d6sign development have gone Weasel YOU mind detailed easy understand instructions make Weasel quick build fun fly Advanced Sport Pattern flyers will appreciate excellent flying characteristics ability customize airframe suit eye need Weasel can pour power tear up sky pull back cruise afternoon away Designed & Engineered RC DESIGNS 75 Price Drive Wilmington Ohio 45177 513382-2158 Hrs 4-8 pm12-6 pm Man-FriSaturdays ing pit stop As have mentioned before popularity Mouse Racing has increase 88 far 89 Racing season Slow Rat Alt Racing competitors aware performance speed 35-powered high-tech Slow Rat model As speeds get ever faster due competitors improving engine/tank combinations propellers wind shear planes airframes goes up drastically pilot Slow Rat trips fuel shutoff plane traveling 125-140 mph commences shake down lose airspeed quickly tre mendous stresses applied wings Present-day Slow Rats dont use MonoKote silk coverings Wings completely sheeted /l6 balsa added strength recent Tree Town contest Larry Dziaks Slow Rat lost outboard wing during shake-down procedure Shaking down Racer involves ra pid successive full-Up/full-Down elevator con trol input resulting rapid up/down pitching model causes airspeed bleed off quickly enabling pilot land have plane moving slowly enough pitman can grab easily photos shows wrecked plane factor caused Larrys problem upper lower wing spars balsawood instead spruce hardwood wing spruce leading edge some terior / plywood lamination stress wing balsa spars could stand Any Racing enthusiast planning Slow Rat project should include Ia-in-sq spruce upper lower wing spars Quickie Rat improvements Racing buffs will recall July 1988 column featured Texas Quickie Rat called Barracuda event quite popular Dallas area included supplementary event Lake Charles AMA Nats Race times event now mid-16-sec range best race time 140 laps 607 New rules ing discussed fall 1989 reduce en gine venturi bore 315 30 seen necessary reduce speed planes three-up Racing will little manage able Bill Bischoff has indicated will have Bar racuda kits Out soon will com plete fuel tank fuel shutoff engine mount necessary hardware month am en closing some Barracuda modifications will improve both performance ease pit ting Wing To make wing strong possible add x 3/8-in full-span spruce spar joint between leading edge existing maple spar balsa will make wing quite bit stiffer Use medium-hard wood front portion wing ahead spruce spar light wood rear portion will reduce overall weight sacrificing strength Rudder occasions Racer flips over its back Perhaps catch missed control line snags ground present Barracuda de sign features second elevator control horn top elevator line fuel shut off attached plane flips over second control horn will receive very solid smack ground/hardtop generally cracks elevator around hinges addi tion small plywood rudder merely protects top-mounted control horn impacting ground during flipover grain outer plywood skins should run vertically top hardwood engine mount extension should grooved accept rudder thereby allowing stronger joint made Overflow pincher sport-type Racing events such Formula Unlimited and/or Quickie Rat require use nonpressurized fuel tanks desirable use tank socalled uniflow design Typically overflow line such tank pinched off after filling tank means al ligator clamp mounted tankthe scheme use Slow Rat sketch months column shows different gadget ing same job involves use music-wire pincher flexible fuel overflow vent line pincher wire extends through fuse lage has coil spring other side ap ply pinch wheel collar end hold everything together tank being filled pitman pushes wheel collar against fuselage thereby releasing pinch overflow vent line tank full wheel collar set free whereupon spring causes pincher wire pinch vent line shut device easy make very reliable can installed lo cation easy reach Remember uniflow-style fuel tank installation build Barracuda modifica tions let know performs Northwest Super Sport Race John Thompson Cottage Grove OR has sent copy 1989 rules event type Racing another aimed beginner intermediate-level participant hope can experience CL Racing having make financial investment needed fly success bigger Racing events Continued page 188 184 Model Aviation THESE NEW KITS CONTAIN CLEAR PLASTIC FuSELAGE VELCRO FAING MALR E. HARDWARE HUGHES 530F KIT INCLUDES METAL LANDING GEAR STRUTS & CLAMPS ILLUSTRATED Y STEP INSTRI NS E & G Enterprises ializIng Vacuum Formed Helicopter Fuselages er Inquiries Invited II Available Al Local Dealer Call Direct J 23015 Del Lago # 0-2 na Hills CA 92653 our Ordering/Message Recorder 714 859-2030 Kit Price. $9695 Terms US currency accept Mastecad & Visa corns $300 Pp $450 $350 HacOlieg tesideols add 6% sales tao ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE model built rules should able flown pitted intermediate-level partici pants rules appear work successfully drizzle circuit could used Rac ing enthusiasts other areas country Basically rules follow AMA Slow Rat Event 312 rules Deviations AMA rules areas engine requirements fuel tank design pull-test control line specifica tion quote Northwest rules respect engine all operate suction feed engine shall plain-bearing type single bypass intake port No variable in-flight adjusting carburetors allowed used AMA Slow Rat Race however other modification intake permissible also no restriction regarding engine rework ex cept major components shall produced original manufacturer no nonfactory material may added engine respect fuel tank cated outboard side fuselage tank may designed cowl en gine Pull test 35 lb Lines stranded construction Propellers Scale Racing have asked several Racers typical starting point Scale Race prop generally use KellyWizard III McCollum/Garner-type Scale Racing propeller After removing flashing Kelly prop will generally require thinning pitch distribution both props should follows measured Prather prop gauge Station I3 3 pitch Station II3 4 pitch Station 1114 4 pitch Station V4/2 pich Station VI43A pitch Station VII5 pitch Station VIII54 pitch After props pitched thin upper sur face blade tips around 025030 thick carefully balance prop using dynamic balancer general length prop will 6 however have found some engines require 63/5-in prop some blade short 6A will have try several propeller mod ifications both test stand flight plane/engine combination achieve maxi mum speeds As always solicit comments photos Texas Wildcat/Darkow Continued page 87 edge flat surface being careful keep straight Glue rear wing ribs lower half trailing edge leaving / clearance back Glue up per half trailing edge rear lower half wing ribs Remove wing building board Mark wing rib locations 2-in intervals A-in leading edge glue ribs place Rubberbands may used hold everything together After checking alignment carefully glue ribs spars Add leading edge planking complete D-tube spar wing will become quite rigid Plank cen ter section install cap strips glue shape tips Set wing aside time being drilling holes strut fittings 1uselage Cut upper lower halves shape two pieces /2 x 3 x 36-in medium-soft balsa Join center line Make cutouts wing tween engine mounts Epoxy engine mounts place Cut /16 ply nose doublers shape glue fuselage Drill landing gear mount holes through lower engine mount indicated plan Glue %2OD brass tubes holes flush fuselage sides Drill %-in holes en gine bellcrank mounts dummy ex hausts drill 12A-in holes %-in centers shown plan glue 1-in lengths A-in doweling holes Tail assembly Cut rudder stabilizer elevator shape Join elevator halves strip /6 x A-in spruce Join elevator stabilizer nylon hinges Cut out stabilizer slot glue tail assembly fuselage being care ful maintain correct alignment Mount /32 wire tail skid spruce block glue unit notch rear fu 188 Model Aviation TWO NEW FLIGHT BOXES Completely assembled finished Made uSA Both top qsatity wood COnOtruction Two large drawers unique drawer locka small boo 0 plun shipping large boo $12500 plus shipping includes met compartmentbattery/power panel compartmentadlustable fuselage Cradles Mosey back guarastee Send SI tsr apace call 14151 747-O$47 leave meseage Flights Fancy Aesmudellng P0 Boo La Honda Ca B4020 CL Racing/Ballard Continued page 184 ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE CULPEPPER MODELS INC 2526 Washington DnbuqmeIA 52001 3191583-4830
Edition: Model Aviation - 1989/10
Page Numbers: 82, 183, 184, 188
MOUSE RACING months photos focus /2A Mouse Racing photo taken Tree Town Modelaires Memorial Day con test shows entry Junior contestant Da vid Schuette being pitted dad Jim little models tricky pit youre using spring starter engine can see both inboard outboard wings ing stabilized spring starter being en gaged wound further advantage stabiliz ing plane manner pilot can assured plane angled either towards away center circle its released thereby allowing smooth takeoff Another photo shows unfortunate incident Mouse Racing Northwest Regionals Open event severe line tangle pi lots heat Remi Dawson Canada dark-colored jacket Bob Boling El Cer rito CA rain hood Tom Knoppi Portland OR Remis plane crashed lines other two fliers remained tangled Remi remaining two planes went Steadying both wings engaging/wind ing spring starter Mouse Racer three pilots went down after line tangle Mousetwo still trying keep planes under control crashed Fuel shutoffs required Mouse Racers might have saved day Photo Hawk GRAIN0 PLYRUDDERf TAIL SKID BLOCK 3/i HARD BALSA BARRACUDA WING MOD% LIGHT BALSASPRUCE modifications Barracuda Quickie Rat see July 1988 column aimed im proving its reliability longevity explanations months column wires wound around pilots also hit dirt Tom Knoppi can seen still trying fly plane hes sitting down can also see pitman John McCollum back camera has rushed try untangle things Theresa Byerly L Wesley Mullins doing good careful job Junior Mouse Racing Northwest Regionals Hawk FILL/VENT UNIFLOW TANK OVERFLOW1 FUEL TUBING LiPINCHER OUTBOARD j~-4 WHEEL COLLAR COMPRESSION SPRING TOP VIEW OF FUSELAGE TANK OMITTED FOR CLARITY L 1As MW PINCHER Heres neat gadget pinching off overflow tube suction-feed fuel tank points out deficiencies Mouse Racers dont have fuel shutoffs planes equipped pilots could have shut down saved planes other race Larry Dziak should have used spruce wing spars instead balsa ones Slow Rat Structural failure occurred shaking down plane pit stop As speeds keep going up need stronger planes becomes more evident 82 Model Aviation Control Lbe Racing John Ballard 10102 Kimblewlck Dr LouisvIlle KY 40223 John McCollum pits famous McMoue Racer Note knee pad kneeling comfort battery lead taped arm prevent its catching plane during launch want win Racing its small things can really count Mike Hawk photo Continued page 183 BYRON ORIGI NALSINCf 5oI U5 3M-i Pitts Special continues provide modelers enjoyable RIO experience second-to-none its fast easy-building injection molded foam design its spectacular aerobatic flight characteristics thrill owning Byron Pitts will never grow old just ask proud owner nine years has over 600 flights Puffs first Complete Kit-Concept packages last item necessary finish basic aircraft cluded items like tires fuel tank specialized hardware part package add glue radio engine choice final finish youre looking unique experience Pills S~ciat See Local Byron Dealer Today Full Line Byron Kits Accessories Fuels Byron Originals Inc ox 279 Grove IA 51445 12/364-3165 Step Twelve Soak tank alcohol lac quer thinner run hot tap water through tank flush out grindings Step Thirteen Place end tank over piece 005-in brass shim stock pencil outline brass Remove tank scribe outline brass allowing A-in over lap sides solder flaps Cut out end piece Bend flaps position part end tank check fit Remove end piece pretin solder flaps edges tank will mate Put end back tank solder place Start soldering iron corner move iron around tank until smooth fillet formed Clean tank thor oughly both inside out check seams voids pinholes YB jp TL8 3 /AJ , Thee IMS6TEO INTO 8 4 4 P~ 7iee air pickup tube See also Table B nested tubes soldered together plugging solder Step Fourteen Repeat Step Thirteen other end cap tank Step Fifteen Immerse completed tank flux solvent lacquer thinner several hours Slosh tank fluid make sure inte rior tank clean Step Sixteen Check tank leaks con necting fuel pickup overflow tubes piece fuel line Place long piece fuel line air pickup tube Immerse tank ba sin water put free end fuel line mouth blow Look air bub bles escaping forming solder joints tank Rework required Step Seventeen Use bunch elbow grease buffing exterior tank steel wool want look good dont Plug tubes first Step Eighteen Rough up inside speed pan heavy sandpaper plan mount fuel tank Rough up part tank will mate pan similar manner thoroughly clean both tank pan before applying RTV adhesive area Press tank place keep under light pressure RTV sets Any RTV adhesives market will work application RTV -temperature-vulcanizingEd Step Nineteen Form free end air pickup tube away side fuselage Appropriate gaps % hA % B end air pickup tube should positioned faces propeller airflow hope loyal readers enjoyed article takes immense amount work pull such piece together thanks once again Nick Sher help Thats time Please remember gather up bits pieces information photos etc have lying around Mail inclusion CL Speed column CL Racing/Ballard continued page 82 Another photographer Hawks photos event shows two Juniors doing excellent job piloting Theresa Byerly Wesley Mullins weather must have chilly day having fuel shutoffs Mouse Racers definitely subject damage line tangles some other unfortunate incidentoccur have seen several cases engine has started backwards pit stop fact has apparent pitman plane released moved backwards lap two until either engine quit someone man aged capture Such embarrassing incidents could have prevented fuel shutoffs installed extremely important competitor multiple-pilot Racing events have overview activities occurring Obviously must con trol own aircraft behooves him ob serve other pilots enter exit cir cle aware flying styles other pilots will help eliminate confu sion resulting unfortunate crash competitors plane landing home pit ting area secrets flying good race have smooth efficient pitman pho tos shows John McCollum pitting famed McMouse Northwest Regionals Note has plane well stabilized refuels has cord glow plug battery taped arm cant get entangled plane Hes also wearing kneeling pad ease pain kneeling hard surface dur October 1989 183 building flying select Byron Puffs next P/C project--thousands other satisfied customers have detailed InfoPack send $200 Catalogs just $300 RC DESIGNS pleased introduce Weasel customizable monoplane SPECIFICATIONS Engine size40-502 cycle Radio4 channel Weight4-b lbs FuselageEpoxy-Glass WingFoam & Balsa Tail SectionBalsa Cowl Epoxy Glass e molded Balsa & necessary hardware included Over two years d6sign development have gone Weasel YOU mind detailed easy understand instructions make Weasel quick build fun fly Advanced Sport Pattern flyers will appreciate excellent flying characteristics ability customize airframe suit eye need Weasel can pour power tear up sky pull back cruise afternoon away Designed & Engineered RC DESIGNS 75 Price Drive Wilmington Ohio 45177 513382-2158 Hrs 4-8 pm12-6 pm Man-FriSaturdays ing pit stop As have mentioned before popularity Mouse Racing has increase 88 far 89 Racing season Slow Rat Alt Racing competitors aware performance speed 35-powered high-tech Slow Rat model As speeds get ever faster due competitors improving engine/tank combinations propellers wind shear planes airframes goes up drastically pilot Slow Rat trips fuel shutoff plane traveling 125-140 mph commences shake down lose airspeed quickly tre mendous stresses applied wings Present-day Slow Rats dont use MonoKote silk coverings Wings completely sheeted /l6 balsa added strength recent Tree Town contest Larry Dziaks Slow Rat lost outboard wing during shake-down procedure Shaking down Racer involves ra pid successive full-Up/full-Down elevator con trol input resulting rapid up/down pitching model causes airspeed bleed off quickly enabling pilot land have plane moving slowly enough pitman can grab easily photos shows wrecked plane factor caused Larrys problem upper lower wing spars balsawood instead spruce hardwood wing spruce leading edge some terior / plywood lamination stress wing balsa spars could stand Any Racing enthusiast planning Slow Rat project should include Ia-in-sq spruce upper lower wing spars Quickie Rat improvements Racing buffs will recall July 1988 column featured Texas Quickie Rat called Barracuda event quite popular Dallas area included supplementary event Lake Charles AMA Nats Race times event now mid-16-sec range best race time 140 laps 607 New rules ing discussed fall 1989 reduce en gine venturi bore 315 30 seen necessary reduce speed planes three-up Racing will little manage able Bill Bischoff has indicated will have Bar racuda kits Out soon will com plete fuel tank fuel shutoff engine mount necessary hardware month am en closing some Barracuda modifications will improve both performance ease pit ting Wing To make wing strong possible add x 3/8-in full-span spruce spar joint between leading edge existing maple spar balsa will make wing quite bit stiffer Use medium-hard wood front portion wing ahead spruce spar light wood rear portion will reduce overall weight sacrificing strength Rudder occasions Racer flips over its back Perhaps catch missed control line snags ground present Barracuda de sign features second elevator control horn top elevator line fuel shut off attached plane flips over second control horn will receive very solid smack ground/hardtop generally cracks elevator around hinges addi tion small plywood rudder merely protects top-mounted control horn impacting ground during flipover grain outer plywood skins should run vertically top hardwood engine mount extension should grooved accept rudder thereby allowing stronger joint made Overflow pincher sport-type Racing events such Formula Unlimited and/or Quickie Rat require use nonpressurized fuel tanks desirable use tank socalled uniflow design Typically overflow line such tank pinched off after filling tank means al ligator clamp mounted tankthe scheme use Slow Rat sketch months column shows different gadget ing same job involves use music-wire pincher flexible fuel overflow vent line pincher wire extends through fuse lage has coil spring other side ap ply pinch wheel collar end hold everything together tank being filled pitman pushes wheel collar against fuselage thereby releasing pinch overflow vent line tank full wheel collar set free whereupon spring causes pincher wire pinch vent line shut device easy make very reliable can installed lo cation easy reach Remember uniflow-style fuel tank installation build Barracuda modifica tions let know performs Northwest Super Sport Race John Thompson Cottage Grove OR has sent copy 1989 rules event type Racing another aimed beginner intermediate-level participant hope can experience CL Racing having make financial investment needed fly success bigger Racing events Continued page 188 184 Model Aviation THESE NEW KITS CONTAIN CLEAR PLASTIC FuSELAGE VELCRO FAING MALR E. HARDWARE HUGHES 530F KIT INCLUDES METAL LANDING GEAR STRUTS & CLAMPS ILLUSTRATED Y STEP INSTRI NS E & G Enterprises ializIng Vacuum Formed Helicopter Fuselages er Inquiries Invited II Available Al Local Dealer Call Direct J 23015 Del Lago # 0-2 na Hills CA 92653 our Ordering/Message Recorder 714 859-2030 Kit Price. $9695 Terms US currency accept Mastecad & Visa corns $300 Pp $450 $350 HacOlieg tesideols add 6% sales tao ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE model built rules should able flown pitted intermediate-level partici pants rules appear work successfully drizzle circuit could used Rac ing enthusiasts other areas country Basically rules follow AMA Slow Rat Event 312 rules Deviations AMA rules areas engine requirements fuel tank design pull-test control line specifica tion quote Northwest rules respect engine all operate suction feed engine shall plain-bearing type single bypass intake port No variable in-flight adjusting carburetors allowed used AMA Slow Rat Race however other modification intake permissible also no restriction regarding engine rework ex cept major components shall produced original manufacturer no nonfactory material may added engine respect fuel tank cated outboard side fuselage tank may designed cowl en gine Pull test 35 lb Lines stranded construction Propellers Scale Racing have asked several Racers typical starting point Scale Race prop generally use KellyWizard III McCollum/Garner-type Scale Racing propeller After removing flashing Kelly prop will generally require thinning pitch distribution both props should follows measured Prather prop gauge Station I3 3 pitch Station II3 4 pitch Station 1114 4 pitch Station V4/2 pich Station VI43A pitch Station VII5 pitch Station VIII54 pitch After props pitched thin upper sur face blade tips around 025030 thick carefully balance prop using dynamic balancer general length prop will 6 however have found some engines require 63/5-in prop some blade short 6A will have try several propeller mod ifications both test stand flight plane/engine combination achieve maxi mum speeds As always solicit comments photos Texas Wildcat/Darkow Continued page 87 edge flat surface being careful keep straight Glue rear wing ribs lower half trailing edge leaving / clearance back Glue up per half trailing edge rear lower half wing ribs Remove wing building board Mark wing rib locations 2-in intervals A-in leading edge glue ribs place Rubberbands may used hold everything together After checking alignment carefully glue ribs spars Add leading edge planking complete D-tube spar wing will become quite rigid Plank cen ter section install cap strips glue shape tips Set wing aside time being drilling holes strut fittings 1uselage Cut upper lower halves shape two pieces /2 x 3 x 36-in medium-soft balsa Join center line Make cutouts wing tween engine mounts Epoxy engine mounts place Cut /16 ply nose doublers shape glue fuselage Drill landing gear mount holes through lower engine mount indicated plan Glue %2OD brass tubes holes flush fuselage sides Drill %-in holes en gine bellcrank mounts dummy ex hausts drill 12A-in holes %-in centers shown plan glue 1-in lengths A-in doweling holes Tail assembly Cut rudder stabilizer elevator shape Join elevator halves strip /6 x A-in spruce Join elevator stabilizer nylon hinges Cut out stabilizer slot glue tail assembly fuselage being care ful maintain correct alignment Mount /32 wire tail skid spruce block glue unit notch rear fu 188 Model Aviation TWO NEW FLIGHT BOXES Completely assembled finished Made uSA Both top qsatity wood COnOtruction Two large drawers unique drawer locka small boo 0 plun shipping large boo $12500 plus shipping includes met compartmentbattery/power panel compartmentadlustable fuselage Cradles Mosey back guarastee Send SI tsr apace call 14151 747-O$47 leave meseage Flights Fancy Aesmudellng P0 Boo La Honda Ca B4020 CL Racing/Ballard Continued page 184 ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE CULPEPPER MODELS INC 2526 Washington DnbuqmeIA 52001 3191583-4830
Edition: Model Aviation - 1989/10
Page Numbers: 82, 183, 184, 188
MOUSE RACING months photos focus /2A Mouse Racing photo taken Tree Town Modelaires Memorial Day con test shows entry Junior contestant Da vid Schuette being pitted dad Jim little models tricky pit youre using spring starter engine can see both inboard outboard wings ing stabilized spring starter being en gaged wound further advantage stabiliz ing plane manner pilot can assured plane angled either towards away center circle its released thereby allowing smooth takeoff Another photo shows unfortunate incident Mouse Racing Northwest Regionals Open event severe line tangle pi lots heat Remi Dawson Canada dark-colored jacket Bob Boling El Cer rito CA rain hood Tom Knoppi Portland OR Remis plane crashed lines other two fliers remained tangled Remi remaining two planes went Steadying both wings engaging/wind ing spring starter Mouse Racer three pilots went down after line tangle Mousetwo still trying keep planes under control crashed Fuel shutoffs required Mouse Racers might have saved day Photo Hawk GRAIN0 PLYRUDDERf TAIL SKID BLOCK 3/i HARD BALSA BARRACUDA WING MOD% LIGHT BALSASPRUCE modifications Barracuda Quickie Rat see July 1988 column aimed im proving its reliability longevity explanations months column wires wound around pilots also hit dirt Tom Knoppi can seen still trying fly plane hes sitting down can also see pitman John McCollum back camera has rushed try untangle things Theresa Byerly L Wesley Mullins doing good careful job Junior Mouse Racing Northwest Regionals Hawk FILL/VENT UNIFLOW TANK OVERFLOW1 FUEL TUBING LiPINCHER OUTBOARD j~-4 WHEEL COLLAR COMPRESSION SPRING TOP VIEW OF FUSELAGE TANK OMITTED FOR CLARITY L 1As MW PINCHER Heres neat gadget pinching off overflow tube suction-feed fuel tank points out deficiencies Mouse Racers dont have fuel shutoffs planes equipped pilots could have shut down saved planes other race Larry Dziak should have used spruce wing spars instead balsa ones Slow Rat Structural failure occurred shaking down plane pit stop As speeds keep going up need stronger planes becomes more evident 82 Model Aviation Control Lbe Racing John Ballard 10102 Kimblewlck Dr LouisvIlle KY 40223 John McCollum pits famous McMoue Racer Note knee pad kneeling comfort battery lead taped arm prevent its catching plane during launch want win Racing its small things can really count Mike Hawk photo Continued page 183 BYRON ORIGI NALSINCf 5oI U5 3M-i Pitts Special continues provide modelers enjoyable RIO experience second-to-none its fast easy-building injection molded foam design its spectacular aerobatic flight characteristics thrill owning Byron Pitts will never grow old just ask proud owner nine years has over 600 flights Puffs first Complete Kit-Concept packages last item necessary finish basic aircraft cluded items like tires fuel tank specialized hardware part package add glue radio engine choice final finish youre looking unique experience Pills S~ciat See Local Byron Dealer Today Full Line Byron Kits Accessories Fuels Byron Originals Inc ox 279 Grove IA 51445 12/364-3165 Step Twelve Soak tank alcohol lac quer thinner run hot tap water through tank flush out grindings Step Thirteen Place end tank over piece 005-in brass shim stock pencil outline brass Remove tank scribe outline brass allowing A-in over lap sides solder flaps Cut out end piece Bend flaps position part end tank check fit Remove end piece pretin solder flaps edges tank will mate Put end back tank solder place Start soldering iron corner move iron around tank until smooth fillet formed Clean tank thor oughly both inside out check seams voids pinholes YB jp TL8 3 /AJ , Thee IMS6TEO INTO 8 4 4 P~ 7iee air pickup tube See also Table B nested tubes soldered together plugging solder Step Fourteen Repeat Step Thirteen other end cap tank Step Fifteen Immerse completed tank flux solvent lacquer thinner several hours Slosh tank fluid make sure inte rior tank clean Step Sixteen Check tank leaks con necting fuel pickup overflow tubes piece fuel line Place long piece fuel line air pickup tube Immerse tank ba sin water put free end fuel line mouth blow Look air bub bles escaping forming solder joints tank Rework required Step Seventeen Use bunch elbow grease buffing exterior tank steel wool want look good dont Plug tubes first Step Eighteen Rough up inside speed pan heavy sandpaper plan mount fuel tank Rough up part tank will mate pan similar manner thoroughly clean both tank pan before applying RTV adhesive area Press tank place keep under light pressure RTV sets Any RTV adhesives market will work application RTV -temperature-vulcanizingEd Step Nineteen Form free end air pickup tube away side fuselage Appropriate gaps % hA % B end air pickup tube should positioned faces propeller airflow hope loyal readers enjoyed article takes immense amount work pull such piece together thanks once again Nick Sher help Thats time Please remember gather up bits pieces information photos etc have lying around Mail inclusion CL Speed column CL Racing/Ballard continued page 82 Another photographer Hawks photos event shows two Juniors doing excellent job piloting Theresa Byerly Wesley Mullins weather must have chilly day having fuel shutoffs Mouse Racers definitely subject damage line tangles some other unfortunate incidentoccur have seen several cases engine has started backwards pit stop fact has apparent pitman plane released moved backwards lap two until either engine quit someone man aged capture Such embarrassing incidents could have prevented fuel shutoffs installed extremely important competitor multiple-pilot Racing events have overview activities occurring Obviously must con trol own aircraft behooves him ob serve other pilots enter exit cir cle aware flying styles other pilots will help eliminate confu sion resulting unfortunate crash competitors plane landing home pit ting area secrets flying good race have smooth efficient pitman pho tos shows John McCollum pitting famed McMouse Northwest Regionals Note has plane well stabilized refuels has cord glow plug battery taped arm cant get entangled plane Hes also wearing kneeling pad ease pain kneeling hard surface dur October 1989 183 building flying select Byron Puffs next P/C project--thousands other satisfied customers have detailed InfoPack send $200 Catalogs just $300 RC DESIGNS pleased introduce Weasel customizable monoplane SPECIFICATIONS Engine size40-502 cycle Radio4 channel Weight4-b lbs FuselageEpoxy-Glass WingFoam & Balsa Tail SectionBalsa Cowl Epoxy Glass e molded Balsa & necessary hardware included Over two years d6sign development have gone Weasel YOU mind detailed easy understand instructions make Weasel quick build fun fly Advanced Sport Pattern flyers will appreciate excellent flying characteristics ability customize airframe suit eye need Weasel can pour power tear up sky pull back cruise afternoon away Designed & Engineered RC DESIGNS 75 Price Drive Wilmington Ohio 45177 513382-2158 Hrs 4-8 pm12-6 pm Man-FriSaturdays ing pit stop As have mentioned before popularity Mouse Racing has increase 88 far 89 Racing season Slow Rat Alt Racing competitors aware performance speed 35-powered high-tech Slow Rat model As speeds get ever faster due competitors improving engine/tank combinations propellers wind shear planes airframes goes up drastically pilot Slow Rat trips fuel shutoff plane traveling 125-140 mph commences shake down lose airspeed quickly tre mendous stresses applied wings Present-day Slow Rats dont use MonoKote silk coverings Wings completely sheeted /l6 balsa added strength recent Tree Town contest Larry Dziaks Slow Rat lost outboard wing during shake-down procedure Shaking down Racer involves ra pid successive full-Up/full-Down elevator con trol input resulting rapid up/down pitching model causes airspeed bleed off quickly enabling pilot land have plane moving slowly enough pitman can grab easily photos shows wrecked plane factor caused Larrys problem upper lower wing spars balsawood instead spruce hardwood wing spruce leading edge some terior / plywood lamination stress wing balsa spars could stand Any Racing enthusiast planning Slow Rat project should include Ia-in-sq spruce upper lower wing spars Quickie Rat improvements Racing buffs will recall July 1988 column featured Texas Quickie Rat called Barracuda event quite popular Dallas area included supplementary event Lake Charles AMA Nats Race times event now mid-16-sec range best race time 140 laps 607 New rules ing discussed fall 1989 reduce en gine venturi bore 315 30 seen necessary reduce speed planes three-up Racing will little manage able Bill Bischoff has indicated will have Bar racuda kits Out soon will com plete fuel tank fuel shutoff engine mount necessary hardware month am en closing some Barracuda modifications will improve both performance ease pit ting Wing To make wing strong possible add x 3/8-in full-span spruce spar joint between leading edge existing maple spar balsa will make wing quite bit stiffer Use medium-hard wood front portion wing ahead spruce spar light wood rear portion will reduce overall weight sacrificing strength Rudder occasions Racer flips over its back Perhaps catch missed control line snags ground present Barracuda de sign features second elevator control horn top elevator line fuel shut off attached plane flips over second control horn will receive very solid smack ground/hardtop generally cracks elevator around hinges addi tion small plywood rudder merely protects top-mounted control horn impacting ground during flipover grain outer plywood skins should run vertically top hardwood engine mount extension should grooved accept rudder thereby allowing stronger joint made Overflow pincher sport-type Racing events such Formula Unlimited and/or Quickie Rat require use nonpressurized fuel tanks desirable use tank socalled uniflow design Typically overflow line such tank pinched off after filling tank means al ligator clamp mounted tankthe scheme use Slow Rat sketch months column shows different gadget ing same job involves use music-wire pincher flexible fuel overflow vent line pincher wire extends through fuse lage has coil spring other side ap ply pinch wheel collar end hold everything together tank being filled pitman pushes wheel collar against fuselage thereby releasing pinch overflow vent line tank full wheel collar set free whereupon spring causes pincher wire pinch vent line shut device easy make very reliable can installed lo cation easy reach Remember uniflow-style fuel tank installation build Barracuda modifica tions let know performs Northwest Super Sport Race John Thompson Cottage Grove OR has sent copy 1989 rules event type Racing another aimed beginner intermediate-level participant hope can experience CL Racing having make financial investment needed fly success bigger Racing events Continued page 188 184 Model Aviation THESE NEW KITS CONTAIN CLEAR PLASTIC FuSELAGE VELCRO FAING MALR E. HARDWARE HUGHES 530F KIT INCLUDES METAL LANDING GEAR STRUTS & CLAMPS ILLUSTRATED Y STEP INSTRI NS E & G Enterprises ializIng Vacuum Formed Helicopter Fuselages er Inquiries Invited II Available Al Local Dealer Call Direct J 23015 Del Lago # 0-2 na Hills CA 92653 our Ordering/Message Recorder 714 859-2030 Kit Price. $9695 Terms US currency accept Mastecad & Visa corns $300 Pp $450 $350 HacOlieg tesideols add 6% sales tao ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE model built rules should able flown pitted intermediate-level partici pants rules appear work successfully drizzle circuit could used Rac ing enthusiasts other areas country Basically rules follow AMA Slow Rat Event 312 rules Deviations AMA rules areas engine requirements fuel tank design pull-test control line specifica tion quote Northwest rules respect engine all operate suction feed engine shall plain-bearing type single bypass intake port No variable in-flight adjusting carburetors allowed used AMA Slow Rat Race however other modification intake permissible also no restriction regarding engine rework ex cept major components shall produced original manufacturer no nonfactory material may added engine respect fuel tank cated outboard side fuselage tank may designed cowl en gine Pull test 35 lb Lines stranded construction Propellers Scale Racing have asked several Racers typical starting point Scale Race prop generally use KellyWizard III McCollum/Garner-type Scale Racing propeller After removing flashing Kelly prop will generally require thinning pitch distribution both props should follows measured Prather prop gauge Station I3 3 pitch Station II3 4 pitch Station 1114 4 pitch Station V4/2 pich Station VI43A pitch Station VII5 pitch Station VIII54 pitch After props pitched thin upper sur face blade tips around 025030 thick carefully balance prop using dynamic balancer general length prop will 6 however have found some engines require 63/5-in prop some blade short 6A will have try several propeller mod ifications both test stand flight plane/engine combination achieve maxi mum speeds As always solicit comments photos Texas Wildcat/Darkow Continued page 87 edge flat surface being careful keep straight Glue rear wing ribs lower half trailing edge leaving / clearance back Glue up per half trailing edge rear lower half wing ribs Remove wing building board Mark wing rib locations 2-in intervals A-in leading edge glue ribs place Rubberbands may used hold everything together After checking alignment carefully glue ribs spars Add leading edge planking complete D-tube spar wing will become quite rigid Plank cen ter section install cap strips glue shape tips Set wing aside time being drilling holes strut fittings 1uselage Cut upper lower halves shape two pieces /2 x 3 x 36-in medium-soft balsa Join center line Make cutouts wing tween engine mounts Epoxy engine mounts place Cut /16 ply nose doublers shape glue fuselage Drill landing gear mount holes through lower engine mount indicated plan Glue %2OD brass tubes holes flush fuselage sides Drill %-in holes en gine bellcrank mounts dummy ex hausts drill 12A-in holes %-in centers shown plan glue 1-in lengths A-in doweling holes Tail assembly Cut rudder stabilizer elevator shape Join elevator halves strip /6 x A-in spruce Join elevator stabilizer nylon hinges Cut out stabilizer slot glue tail assembly fuselage being care ful maintain correct alignment Mount /32 wire tail skid spruce block glue unit notch rear fu 188 Model Aviation TWO NEW FLIGHT BOXES Completely assembled finished Made uSA Both top qsatity wood COnOtruction Two large drawers unique drawer locka small boo 0 plun shipping large boo $12500 plus shipping includes met compartmentbattery/power panel compartmentadlustable fuselage Cradles Mosey back guarastee Send SI tsr apace call 14151 747-O$47 leave meseage Flights Fancy Aesmudellng P0 Boo La Honda Ca B4020 CL Racing/Ballard Continued page 184 ZAP UNIVERSITY COLLEGE OF GLUE KNOWLEDGE CULPEPPER MODELS INC 2526 Washington DnbuqmeIA 52001 3191583-4830