NO OCR TEXT LETS GET thing straight start its Stephens Akin Its Laser 200 its probably best aerobatic airplane world Sure started out life Stephens wing plan form same Stephens tail looks about same does landing gear take off turtledeck replace bubble canopy whole airplane looks like Stephens Akro isnt can take Leo Louden slagers word should know being guy has spent past 14 years developing airplane consistently beats Pitts Zlins Yaks Flying unique Laser 200 Leo has won 1980 World Cham pionship six last seven US National Aerobatics Championships Except brief mental lapse 1978 would now seeking unprecedented third-straight World Cham pionship Freely acknowledging Stephens Akro its designers inspiration Leo nevertheless insists airplane called Laser 200 200 being its horsepower incorrectly re ferring Stephens fears people will ex pect Laser-like performance plansbuilt Stephens Akros no plans avail able Laser nor does have thought publishing future now second Laser 200 action built Leos close friend co-worker Jim Roberts registered N2OJJbut other simi lar airplanes appear coming years will strictly work develop own modifications Stephens As exam ple Henry Haighs Superstar N8HH looks lot like Laser 200 copy Haigh perennial runner-up Loudenslager prolific aerobatic designers worked out own improvements old design story Leo Laser 200 goes back scene first official US National Aerobatics Championships held part first Reno Air Races September 1964 wasnt precision competition flying new solution problem high stick forces super-spade comes play aileron has displaced few degrees thus lightening load turned Loudenslager air show flying Duane Cole Bob Hoover USAF Thunderbirds saw ultimate mastery flying Leo left life Air Force GI summer 1966 begun career flying American Airlines tender age 22 about same time picked aerobatics number-one sideline being pointed di rection modified deHavilland Chipmunk Lindsay Parsons pioneers Ameri can competitive aerobatics magazine article August 1967 about prototype Stephens Akro its pilot Margaret Ritchie attracted Leo airplane thought building lacked appeal knew much work entailed having built cars racing wanted get air quickly possible fortunate able get designer Clayton Stephens built one-piece wood wing Gerry Zimmerman build fuselage enlargement Formula racer Miss San Bernardino raced aerobatic ace Art Scholl January 1971 stock Stephens Akro assembled though Leos enthusiasm understandably tempered loss Margaret Ritchie first airplane crash during practice two years earlier Since generally November 1982 87 ne Instrument panel pretty conventional bare minimum flight navigational aids its clip center special holding diagrams some difficult aerobatic flight sequences ever flown Laser 200s origin big Formula racer evident its mid-wing design waythe cylinder head cheek fairings tapered back wing root agreed accident resulted pilots physical problems rather anything herent airplane Leo went ahead plans initial test flight made middle April 1971 led immediately long process modification has turned Stephens Laser 200 Roll control first problem ailerons no neutral feel Leo explained closed up gap could stop airplane point ability stop exactly pilot wants much 30 off vital airplane flown serious competition Leos first contest ever Brookhaven Long Island summer 1971 Skipping usual entering point Sportsman Cate gory Leo went right Intermediate won beating pair Decathalon pilots exactly sort contest have since become accustomed being single Pitts Special seen competition Loudenslagers first victory new Stephens Akro few weeks later came 1971 US Na tional Championships also happened qualifying meet selection US team destined go 1972 World Championships spot team hardly realistic goal rookie still plenty pressure learn read Aresti System maneuver symbols design Free-Style sequence met requirements could flown inexperienced aerobat long before contest mechanical prob lems began appear form failed ex haust valve broken oil line meant new cylinder expenditure money could afford loss precious practice time Leo starting see draw backs developing airplane himself same time two-week practice session contest site near Oak Grove TX consisted mainly some 30 flights design prove Free-Style se quence pushed myself limit Leo ex plained sore muscle hurt whimpered cried little bit realized over head end practice period about 20 hours flying difficult ma neuvers expected face contest just second contest first try Unlimited Category Leo indeed over head never attempted vertical snap roll new Stephens other airplane yet fly Unknown sequence pilot got fly prior practice Out 13 entries placed 10th far behind well known pilots day Gene Soucy Charlie Hillard Bob Herendeen Art Scholl behind some other newcomers big-time like Tom Poberezny Bill Thomas worked way up gradual way Leo impressed officials Aerobatic Club America enough land spot US team assistant John Armstrong would judge Being center action Salon de Provence France proved immense help coming years Leo already set sights World Championships first dual matter perfecting himself air plane 1 aware 1971 aircraft unstable maneuvers such outside snap roll control pressures extremely high After flying arm aching built second horizontal tail get boost up moved elevator hinge rearward working equally serious problem stick-snatch under some conditions stick would return neutral would lock extreme position invited Florida legendary self-taught genius aerobatic design Curtis Pitts though Leo totally involved chief rival marvelous little Pitts Special its creator gra ciously volunteered advice adding 20% area horizontal stabilizer should cure stick-snatch problem As Pitts ideas worked 1972 improving airplane ex perience self-confidence Leo placed 5th National Championships good enough qualify place US team except qualifying meets held odd-numbered years World Championships held even-numbered years 1973 slipped 7th since no country bid 1974 World Championships no US team fail make 1974 worked way up 4th Nationals less 2% behind winner though no immediate World Championships sight star clearly rising No longer unanimous pilot needed Pitts Special running 1975 obviously year decision Leo Continued page 160 88 Model Aviation Among changes dictated hundreds hours high-G flying dual bracing wires enlarged tail surfaces Just part travels Loudensagerand Laser 200 theywon seven US World Championship dominate sport well designed fixed landing gear can almost clean retracts its lot lighter simpler has tapered aluminum strut fiberglass wheel pants quadra engine PERFORMANCE 37 lbs capacity 35 cc develops over 20 HP 8000-10000 RPM Part credit impressive performance weight ratio due Schnuerle porting combined piston port induction QUALITY Precision machining continuous testing run ever engine factor has made Quadra No 1 world component detail design Quadra provides ultimate quality reliability Model II needle main bearings Model Ill e/needle main bearings Model 111111 le bearing piston pin Roller bearing crank pin 4 WAYS BETTER IN POWERING LARGE SCALE AIRCRAFT SERVICEABILITY simplicity design provides accessible maintenance free engine market ECONOMY Quadra offers value money other comparable engine Alter youve flown Quadra Youll never safis tied wifh anyfhing less TML Manutaciuring Ltd Huron Industrial Park Canada Avenue Huron Park Ontario Canada NOM lYS Telephone 519 2286514 Telen 064-7181 plans collector shows Yn-in brass takeoff line tank pressure primary airflow engine cooling exits fuselage through two holes cowl hatch surround muffler exhaust tubes An optional cooling exit through lightening hole top Former F3 shown plans coming through open cockpit can lead some fuel oil spray through open cockpit wheel pants made light balsa stiffened /32-in plywood sheet inside Brass steel flanges shape flanges shown plans inside windshield outline silver-soldered onto landing gear mounting wheel pants method allows wheel pants removed necessary Fairings 3/32-in music wire landing gear made two 5/33 -in balsa sheets glued epoxy shown plans tail wheel gear formed l/l~in piano wire wire-wrapped onto piece of/16-in plywood glued onto bottom model Finishing After filling sanding com pleted entire model covered Japan ese tissue doped Graupner Cloy diluted 50% acetone wing tail surfaces filled five six undiluted coats fuselage wing stabilizer applied coat VIK varnish lightly dry-sanded after half days hardening sprayed several coats VIK paint sanding very fine sandpaper after first coat Since Graupner VIK dopes generally available US standard fuel-proof dope should used first coat open framework should shrink tissue tight subsequent coats should Non Warranty Repair Service Kraft Futaba Electronic RIG Equipment 204 N StoneLi]Greenwood MS 38930 Telephone 1601 453-1699 low-shrink dope reduce chance warping framework decorations put Humbrol paint After finishing plane mounted windshield cut sheet rhodoid celluloid butyrate sheet plastic stiffened frame aluminum tubing tubing slit longitudinally shaped coated epoxy inside Insert windshield pinch tube Cut two small slits fuselage insert flattened tubing Glue fill intersection Finish joint paint making windshield intersection disappear cowling shaped hollowed pieces -in balsa attached fuselage screw through flange mounted Former F2 Two guide pins inside cowling align cowling flush fuselage sides Finally remember little care cockpit FreeFIight RIC Assist SUPER BRIGADIER 66 66 SpanFor 25 Power Plan ant24 hnneIRfC Old favorite #RCF F2 $995ca R/G version has ailerons SUPER BRIGADIER 44 1/2A RIC Free-Flight Assist Plan set $495 44 Span RIC Training#RCFF-3 Prices Complete Plans Sub Assembly Detailed Parts Lists Add $200 Mailing Tube Send $100 retundabie Complete Information Kits some really great things comel 1 58 Model Aviation DEALER INQUIRIES /NV/TED CONTIOLINE TANKS PRDF/LECDMBATRAT WIDE & NARROW WEDGE 15 -- 6 oz Capacities UNIFLOW & STINDD Custom Dliii Fuels Ingredients detailed brochure5OC stamps/check oni CAROLINA TAFFINDER 8345 Delhi Road Charleston Hgts SC 29405 A Power Panel POWER starter-pump-plug AMMETER indication plug condition ALL 12-Volt battery Battery Cord MatIng Plugs 3 x 5 Easy Mounting AWT Quality HobbyProducts Fiber-Glass Tapes Fiber-Glass Cloths Polyester Resin Air-O-Fill Micro-Balloons Primers Thinner Engine Oil Engine Cleaner Protective Gloves Dust Masks Sponge & Applicator Kits Ask products local hobby shop send self-addressed stamped envelope free catalogue discount KIN-CRAYr MFG INC RJ/2 Box 481E Ashland Kentucky 41101 606 928-4763 OnlyThe standard Power Panel shown also available two new versions smaller $2395 Mini Panel flexible Pual Range Panel gives option 1-1/2 2 volts glow plug Flying weight finished model 56 ozThe lead-out position should between 18% 20% wing chord use aluminum Veco Fox spinner Remember keep total weight down avoid use unproductive nose weight extra care should taken build tail plane stabilizer elevator rudder very light engine use HP 40 quite powerful lighter some other en gines general size custom-made muffler also lightweight mounted well back fuselage tending move center gravity rearward cooling system muffler engine runs well over heating power loss HP 40 powerful easy handle use 9/32-in spraybar Spectre has very pleasing look build am sure will give much pleasure has given Happy flying Laser Airplane/Berliner Continued page 88 found way blocked least temporarily Early year discovered crack main spar wing complete surprise ashe long aware unbraced wing might strong enough repeated violent maneuvers Such disappointment airplane gave serious thought dumping getting first new super competition versions Improves Engine Life Restriction Type 100-Mesh Screen Removable Cleaning Threaded Two-Part Aluminum Body 160 Model Aviation $119 Dealer Pitts Special type S-i T Curtis Pitts offered him switch monoplane pioneering considerable success its chief rival would have admission failure having wasted yearsonly admit biplane best very least couldnt done great deal very serious thought during period realized important airplane Stephens Akro N lOLL become airplane meant competition So much aerobatic airplanes two wings new stronger wing being built Leo went work rest airplane since couldnt fly wing anyway cut off fuselage just behind cockpit threw away front part keeping backbone tail already broken two longerons wing mount come close jumping out occasion new fuselage built lighter stronger thus safer new wing built craftsman Texas modified NACA 23012 airfoil routed spar beefed-up center section giving ultimate strength excess 10 Gs wing plan form remained same originally designed Eddie Allenbaugh Leo gives credit lot good numbers still airplane Allenbaugh best known racing designs such Jackrabbit 1930s died before prototype Stephens completed though Leo feels designed longerons tail racing high-speed snap rolls gives Allenbaugh lot credit eventual success design Along major structural changes fuselage came obvious change replacement heavy plexigiass bubble low-drag canopy fairs smoothly new turtledeck cut weight added lateral area knife-edge flight almost incidental cruising speed rose 136mph 158 mph can blessing long crosscountry flights contests work finished major en gineering help Bud Storms Joe Oshin ski Jr long before 1975 National Championships 1976 World Champion ship qualifications nothing left original Stephens Akro fuselage frame work aft pilots seat some time before Canadian air show promoter hung Laser name craft very much new airplane deserving name its own Aligned againstLeo andtheLaserforthe 1975 Unlimited title no fewer 19 men woman flying Pitts Specials division clear could Professionals Choicedetailing adds immeasurably planes appearance Solve Sanding Problems SPEED STIX Disposable Sanding Tools Inconvenient Hard-to-Sand Spots S Use Wet Dry 03 Sanding Grades 100 120 160 $485 Regular SPEED STIX 9 Stix 3 grade 1/4 3/8 1/2 diam $295 Mini SPEED STIX Set 6 1/8 3/16 1/4 diam 120 & 180 Orders Postpaid Order Direct Precision Sanding Tools 2930 Skyview Ave Pueblo CO 81008 Eve Phone 303 542-6200 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX AMA Membership161 Ace RC Inc140 Aero Publishers132 Aerotrend Products6 Air Design133 AirtronicsInside Front Cover A-justo-jig Co153 Phase Art136 Americas Hobby Center123 Andrews Aircraft Model Co 156 Applied Design Corp 132 BK Products 140 Balsa USA 119 Richard G Barron 156 Bavarian Precision ProductS 84 Behrens Plan Service 150 Brownsell Flag & Decal 155 BuckeyeBalsa 131 Byron Originals 21 CB Associates64 California Model Imports64 Carlberg Companies150 Carolina-Taffinder158 Johnnie Casburn Mfg Co89 Charlies RC Goodies113 Circus Hobbies142-148 Consumers Hobby Corp134-135 Contempo Enterprises116 Coverite151 Cox Hobbies2 DA Enterprises 160 C&D Engineering 154 DG Products 130 DGM Industries 118 Jim Denaro Model Products 117 Bob Dively Model Aircraft 157 Du-Bro Products 8 Eastcraft Specialty Products 14 Eastern Soaring Supplies 137 Enya Model Products Co de Back Cover FAI Model Supply155 FHS supply Inc4 Flightilne Shirts137 Flyline Models127 Fourmost Products112 Fox Mfg153 Full Command Systems126 Fults Tooling121 Futaba Corp America85 Gemini Models Inc131 Gorham Model Products141 Great Lakes Model & Mold Co31 Grish Brothers118 124 GT Models130 Carl Goldberg Models15 Great Planes Model Mfg Co159 Historic Aviation11 Hobby Barn114-115 Hobby Capitol Distributors10 Hobby Horn149 Hobby Radio Shop131 Hobby Shack157 Hobbypoxy Products154 155 Horizon Model Crafts149 Homer Sales131 Hunt Models130 Identity Check Co152 Ikon Northwest122 Indoor Model Supplies155 Indy RC Sales138-139 J-5 Enterprises 65 Jomar Products 127 K&B Manufacturing 162 K&S Engineering 121 Kin-Craft Mfg Inc 160 Kraft RC Electronics 65 Kraft Systems 117 Kustom KraftsmanshiP 122 Litco Systems 19 Lone Star Models 127 MACS Products 127 Majestic Models 162 Mallory Models 83 McDaniel RC Service 124 Jim Messers Quality Model Products Midwest Products7 Mills Airplane Models136 Miniature Aircraft Supply31 Model Engineering Norwalk152 Model Helicopter USA133 Model Merchant126 Model Products Corp125 Mutchiers Hobbies128-129 Mr Gs Products120 Jerry Nelson & Co150 162 Nor-Cal Avionics Inc20 Orline RC Aircraft113 Pacific Saliplanes120 Peck-Polymers112 Pica Products9 Pierce Aero Co116 Dave Platt Models125 Plaza Hobby Craft14 Precision Sanding Tools160 Proctor Enterprises154 Prop Shop14 RF Enterprises140 RJL Industries156 RLFProducts118 Repla-Tech International137 Roush Mfg141 Saf-Flite Models157 Sailplane Factory4 Satellite City163 Sheldons Hobby Shop84 Sig Mfg Co13 Square Loop Hobby Center158 Sterling Models20 Sullivan Products133 Tatone Products83 Taylor-Craft Ltd156 Teja Engineering65 Top Flite Models1 Trail Mfg158 WE Technical Services 154158 Whale Hobbies118 Williams Brothers4 Windsor Propeller Co 150160 World EnginesBackdover Xplorer Enterprises132 CA Zaic Co132 Zenith Aviation Books5 Nick Ziroli Models120 124 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX result Loudens lager whipped 20 Pitts since 1968 anything Pitts won big American meet Super Chipmunk flown great Harold Krier Now doubts about effectiveness combination Loudenslager monoplane erased good Along Pitta jockeys Henry Haigh Clint McHenry Bill Thomas Bob Davis Betty Everest Leo made long trek USSR 1976 World Championships first test airplane against rest world official results contest mean little cheating officials obvious winning Soviet pilots emharassed Americans disillu sioned talked seriously about retir ing sport Back home time quickly healed wounds entire team back action Leo again won National Championship time margin almost 500 points out total 18000 no longer surprise see monoplane top Loudenslagers basic idea working out just way planned Though appreciably better best modified Pitts Laser its long wings long fuselage graceful movements scored points No doubt about airplane looks better performing rolling 3600 turns vertical hesitation rolls stubby violent little biplane Leos third straight national victory tied him respect then-retired Gene Soucy came 1977 time almost 600 points over young Kermit Weeks hottest modified Pitts S-I Ss Again Laser monoplane field 19 again Leo qualified lead US team against world 1978 World Championships guaran teed very important future sport failed lot honest 1976 meet USSR would probably never another major rules changes made prior contest host Czech Aeroclub taken very unusual step formally announcing would fair contest Still no doubted need Eastern European socialist govern ment grab opportunity score points home folks momentarily eclipsing alltoo-obvious successes capitalism As turned out 1978 World Champion ships could hardly have fairly conscientiously run Czechs did everything possible ensure meet conducted way sports founders wanted itto sportsmanship second safety future game seems assured contest just getting underway no US team expected treated fairly results first four rounds flying announced did believe up-and-up first round brought Loudenslager Laser 200 Fine Quality Flying Models Catalog Si 50 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books 4, 444 MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 ~Maicnea rerrurmuflC System TOP PERFORMANCE K&8 ENGINES 16 Airplane 4 Marine K&8 FUELSK&B GLOW PLUGS 7 Blends4 chsiceS Matched Finish System BEST APPEARANCE K&8 FIBtRGLASS CLOTH K&B Micrs-Ballsons FILLER K&8 SUPER POXY RtSIN K&B SUPER POXY THINNtR K&B SUPER POXY PRIMER K&B SUPER POXY PAINT K&B MIXING CUPS FiiF 162 Model Aviation Marco Avenue Reno Nevada 89509Jj 702-322-0664
Edition: Model Aviation - 1982/11
Page Numbers: 86, 87, 88, 158, 160, 162
NO OCR TEXT LETS GET thing straight start its Stephens Akin Its Laser 200 its probably best aerobatic airplane world Sure started out life Stephens wing plan form same Stephens tail looks about same does landing gear take off turtledeck replace bubble canopy whole airplane looks like Stephens Akro isnt can take Leo Louden slagers word should know being guy has spent past 14 years developing airplane consistently beats Pitts Zlins Yaks Flying unique Laser 200 Leo has won 1980 World Cham pionship six last seven US National Aerobatics Championships Except brief mental lapse 1978 would now seeking unprecedented third-straight World Cham pionship Freely acknowledging Stephens Akro its designers inspiration Leo nevertheless insists airplane called Laser 200 200 being its horsepower incorrectly re ferring Stephens fears people will ex pect Laser-like performance plansbuilt Stephens Akros no plans avail able Laser nor does have thought publishing future now second Laser 200 action built Leos close friend co-worker Jim Roberts registered N2OJJbut other simi lar airplanes appear coming years will strictly work develop own modifications Stephens As exam ple Henry Haighs Superstar N8HH looks lot like Laser 200 copy Haigh perennial runner-up Loudenslager prolific aerobatic designers worked out own improvements old design story Leo Laser 200 goes back scene first official US National Aerobatics Championships held part first Reno Air Races September 1964 wasnt precision competition flying new solution problem high stick forces super-spade comes play aileron has displaced few degrees thus lightening load turned Loudenslager air show flying Duane Cole Bob Hoover USAF Thunderbirds saw ultimate mastery flying Leo left life Air Force GI summer 1966 begun career flying American Airlines tender age 22 about same time picked aerobatics number-one sideline being pointed di rection modified deHavilland Chipmunk Lindsay Parsons pioneers Ameri can competitive aerobatics magazine article August 1967 about prototype Stephens Akro its pilot Margaret Ritchie attracted Leo airplane thought building lacked appeal knew much work entailed having built cars racing wanted get air quickly possible fortunate able get designer Clayton Stephens built one-piece wood wing Gerry Zimmerman build fuselage enlargement Formula racer Miss San Bernardino raced aerobatic ace Art Scholl January 1971 stock Stephens Akro assembled though Leos enthusiasm understandably tempered loss Margaret Ritchie first airplane crash during practice two years earlier Since generally November 1982 87 ne Instrument panel pretty conventional bare minimum flight navigational aids its clip center special holding diagrams some difficult aerobatic flight sequences ever flown Laser 200s origin big Formula racer evident its mid-wing design waythe cylinder head cheek fairings tapered back wing root agreed accident resulted pilots physical problems rather anything herent airplane Leo went ahead plans initial test flight made middle April 1971 led immediately long process modification has turned Stephens Laser 200 Roll control first problem ailerons no neutral feel Leo explained closed up gap could stop airplane point ability stop exactly pilot wants much 30 off vital airplane flown serious competition Leos first contest ever Brookhaven Long Island summer 1971 Skipping usual entering point Sportsman Cate gory Leo went right Intermediate won beating pair Decathalon pilots exactly sort contest have since become accustomed being single Pitts Special seen competition Loudenslagers first victory new Stephens Akro few weeks later came 1971 US Na tional Championships also happened qualifying meet selection US team destined go 1972 World Championships spot team hardly realistic goal rookie still plenty pressure learn read Aresti System maneuver symbols design Free-Style sequence met requirements could flown inexperienced aerobat long before contest mechanical prob lems began appear form failed ex haust valve broken oil line meant new cylinder expenditure money could afford loss precious practice time Leo starting see draw backs developing airplane himself same time two-week practice session contest site near Oak Grove TX consisted mainly some 30 flights design prove Free-Style se quence pushed myself limit Leo ex plained sore muscle hurt whimpered cried little bit realized over head end practice period about 20 hours flying difficult ma neuvers expected face contest just second contest first try Unlimited Category Leo indeed over head never attempted vertical snap roll new Stephens other airplane yet fly Unknown sequence pilot got fly prior practice Out 13 entries placed 10th far behind well known pilots day Gene Soucy Charlie Hillard Bob Herendeen Art Scholl behind some other newcomers big-time like Tom Poberezny Bill Thomas worked way up gradual way Leo impressed officials Aerobatic Club America enough land spot US team assistant John Armstrong would judge Being center action Salon de Provence France proved immense help coming years Leo already set sights World Championships first dual matter perfecting himself air plane 1 aware 1971 aircraft unstable maneuvers such outside snap roll control pressures extremely high After flying arm aching built second horizontal tail get boost up moved elevator hinge rearward working equally serious problem stick-snatch under some conditions stick would return neutral would lock extreme position invited Florida legendary self-taught genius aerobatic design Curtis Pitts though Leo totally involved chief rival marvelous little Pitts Special its creator gra ciously volunteered advice adding 20% area horizontal stabilizer should cure stick-snatch problem As Pitts ideas worked 1972 improving airplane ex perience self-confidence Leo placed 5th National Championships good enough qualify place US team except qualifying meets held odd-numbered years World Championships held even-numbered years 1973 slipped 7th since no country bid 1974 World Championships no US team fail make 1974 worked way up 4th Nationals less 2% behind winner though no immediate World Championships sight star clearly rising No longer unanimous pilot needed Pitts Special running 1975 obviously year decision Leo Continued page 160 88 Model Aviation Among changes dictated hundreds hours high-G flying dual bracing wires enlarged tail surfaces Just part travels Loudensagerand Laser 200 theywon seven US World Championship dominate sport well designed fixed landing gear can almost clean retracts its lot lighter simpler has tapered aluminum strut fiberglass wheel pants quadra engine PERFORMANCE 37 lbs capacity 35 cc develops over 20 HP 8000-10000 RPM Part credit impressive performance weight ratio due Schnuerle porting combined piston port induction QUALITY Precision machining continuous testing run ever engine factor has made Quadra No 1 world component detail design Quadra provides ultimate quality reliability Model II needle main bearings Model Ill e/needle main bearings Model 111111 le bearing piston pin Roller bearing crank pin 4 WAYS BETTER IN POWERING LARGE SCALE AIRCRAFT SERVICEABILITY simplicity design provides accessible maintenance free engine market ECONOMY Quadra offers value money other comparable engine Alter youve flown Quadra Youll never safis tied wifh anyfhing less TML Manutaciuring Ltd Huron Industrial Park Canada Avenue Huron Park Ontario Canada NOM lYS Telephone 519 2286514 Telen 064-7181 plans collector shows Yn-in brass takeoff line tank pressure primary airflow engine cooling exits fuselage through two holes cowl hatch surround muffler exhaust tubes An optional cooling exit through lightening hole top Former F3 shown plans coming through open cockpit can lead some fuel oil spray through open cockpit wheel pants made light balsa stiffened /32-in plywood sheet inside Brass steel flanges shape flanges shown plans inside windshield outline silver-soldered onto landing gear mounting wheel pants method allows wheel pants removed necessary Fairings 3/32-in music wire landing gear made two 5/33 -in balsa sheets glued epoxy shown plans tail wheel gear formed l/l~in piano wire wire-wrapped onto piece of/16-in plywood glued onto bottom model Finishing After filling sanding com pleted entire model covered Japan ese tissue doped Graupner Cloy diluted 50% acetone wing tail surfaces filled five six undiluted coats fuselage wing stabilizer applied coat VIK varnish lightly dry-sanded after half days hardening sprayed several coats VIK paint sanding very fine sandpaper after first coat Since Graupner VIK dopes generally available US standard fuel-proof dope should used first coat open framework should shrink tissue tight subsequent coats should Non Warranty Repair Service Kraft Futaba Electronic RIG Equipment 204 N StoneLi]Greenwood MS 38930 Telephone 1601 453-1699 low-shrink dope reduce chance warping framework decorations put Humbrol paint After finishing plane mounted windshield cut sheet rhodoid celluloid butyrate sheet plastic stiffened frame aluminum tubing tubing slit longitudinally shaped coated epoxy inside Insert windshield pinch tube Cut two small slits fuselage insert flattened tubing Glue fill intersection Finish joint paint making windshield intersection disappear cowling shaped hollowed pieces -in balsa attached fuselage screw through flange mounted Former F2 Two guide pins inside cowling align cowling flush fuselage sides Finally remember little care cockpit FreeFIight RIC Assist SUPER BRIGADIER 66 66 SpanFor 25 Power Plan ant24 hnneIRfC Old favorite #RCF F2 $995ca R/G version has ailerons SUPER BRIGADIER 44 1/2A RIC Free-Flight Assist Plan set $495 44 Span RIC Training#RCFF-3 Prices Complete Plans Sub Assembly Detailed Parts Lists Add $200 Mailing Tube Send $100 retundabie Complete Information Kits some really great things comel 1 58 Model Aviation DEALER INQUIRIES /NV/TED CONTIOLINE TANKS PRDF/LECDMBATRAT WIDE & NARROW WEDGE 15 -- 6 oz Capacities UNIFLOW & STINDD Custom Dliii Fuels Ingredients detailed brochure5OC stamps/check oni CAROLINA TAFFINDER 8345 Delhi Road Charleston Hgts SC 29405 A Power Panel POWER starter-pump-plug AMMETER indication plug condition ALL 12-Volt battery Battery Cord MatIng Plugs 3 x 5 Easy Mounting AWT Quality HobbyProducts Fiber-Glass Tapes Fiber-Glass Cloths Polyester Resin Air-O-Fill Micro-Balloons Primers Thinner Engine Oil Engine Cleaner Protective Gloves Dust Masks Sponge & Applicator Kits Ask products local hobby shop send self-addressed stamped envelope free catalogue discount KIN-CRAYr MFG INC RJ/2 Box 481E Ashland Kentucky 41101 606 928-4763 OnlyThe standard Power Panel shown also available two new versions smaller $2395 Mini Panel flexible Pual Range Panel gives option 1-1/2 2 volts glow plug Flying weight finished model 56 ozThe lead-out position should between 18% 20% wing chord use aluminum Veco Fox spinner Remember keep total weight down avoid use unproductive nose weight extra care should taken build tail plane stabilizer elevator rudder very light engine use HP 40 quite powerful lighter some other en gines general size custom-made muffler also lightweight mounted well back fuselage tending move center gravity rearward cooling system muffler engine runs well over heating power loss HP 40 powerful easy handle use 9/32-in spraybar Spectre has very pleasing look build am sure will give much pleasure has given Happy flying Laser Airplane/Berliner Continued page 88 found way blocked least temporarily Early year discovered crack main spar wing complete surprise ashe long aware unbraced wing might strong enough repeated violent maneuvers Such disappointment airplane gave serious thought dumping getting first new super competition versions Improves Engine Life Restriction Type 100-Mesh Screen Removable Cleaning Threaded Two-Part Aluminum Body 160 Model Aviation $119 Dealer Pitts Special type S-i T Curtis Pitts offered him switch monoplane pioneering considerable success its chief rival would have admission failure having wasted yearsonly admit biplane best very least couldnt done great deal very serious thought during period realized important airplane Stephens Akro N lOLL become airplane meant competition So much aerobatic airplanes two wings new stronger wing being built Leo went work rest airplane since couldnt fly wing anyway cut off fuselage just behind cockpit threw away front part keeping backbone tail already broken two longerons wing mount come close jumping out occasion new fuselage built lighter stronger thus safer new wing built craftsman Texas modified NACA 23012 airfoil routed spar beefed-up center section giving ultimate strength excess 10 Gs wing plan form remained same originally designed Eddie Allenbaugh Leo gives credit lot good numbers still airplane Allenbaugh best known racing designs such Jackrabbit 1930s died before prototype Stephens completed though Leo feels designed longerons tail racing high-speed snap rolls gives Allenbaugh lot credit eventual success design Along major structural changes fuselage came obvious change replacement heavy plexigiass bubble low-drag canopy fairs smoothly new turtledeck cut weight added lateral area knife-edge flight almost incidental cruising speed rose 136mph 158 mph can blessing long crosscountry flights contests work finished major en gineering help Bud Storms Joe Oshin ski Jr long before 1975 National Championships 1976 World Champion ship qualifications nothing left original Stephens Akro fuselage frame work aft pilots seat some time before Canadian air show promoter hung Laser name craft very much new airplane deserving name its own Aligned againstLeo andtheLaserforthe 1975 Unlimited title no fewer 19 men woman flying Pitts Specials division clear could Professionals Choicedetailing adds immeasurably planes appearance Solve Sanding Problems SPEED STIX Disposable Sanding Tools Inconvenient Hard-to-Sand Spots S Use Wet Dry 03 Sanding Grades 100 120 160 $485 Regular SPEED STIX 9 Stix 3 grade 1/4 3/8 1/2 diam $295 Mini SPEED STIX Set 6 1/8 3/16 1/4 diam 120 & 180 Orders Postpaid Order Direct Precision Sanding Tools 2930 Skyview Ave Pueblo CO 81008 Eve Phone 303 542-6200 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX AMA Membership161 Ace RC Inc140 Aero Publishers132 Aerotrend Products6 Air Design133 AirtronicsInside Front Cover A-justo-jig Co153 Phase Art136 Americas Hobby Center123 Andrews Aircraft Model Co 156 Applied Design Corp 132 BK Products 140 Balsa USA 119 Richard G Barron 156 Bavarian Precision ProductS 84 Behrens Plan Service 150 Brownsell Flag & Decal 155 BuckeyeBalsa 131 Byron Originals 21 CB Associates64 California Model Imports64 Carlberg Companies150 Carolina-Taffinder158 Johnnie Casburn Mfg Co89 Charlies RC Goodies113 Circus Hobbies142-148 Consumers Hobby Corp134-135 Contempo Enterprises116 Coverite151 Cox Hobbies2 DA Enterprises 160 C&D Engineering 154 DG Products 130 DGM Industries 118 Jim Denaro Model Products 117 Bob Dively Model Aircraft 157 Du-Bro Products 8 Eastcraft Specialty Products 14 Eastern Soaring Supplies 137 Enya Model Products Co de Back Cover FAI Model Supply155 FHS supply Inc4 Flightilne Shirts137 Flyline Models127 Fourmost Products112 Fox Mfg153 Full Command Systems126 Fults Tooling121 Futaba Corp America85 Gemini Models Inc131 Gorham Model Products141 Great Lakes Model & Mold Co31 Grish Brothers118 124 GT Models130 Carl Goldberg Models15 Great Planes Model Mfg Co159 Historic Aviation11 Hobby Barn114-115 Hobby Capitol Distributors10 Hobby Horn149 Hobby Radio Shop131 Hobby Shack157 Hobbypoxy Products154 155 Horizon Model Crafts149 Homer Sales131 Hunt Models130 Identity Check Co152 Ikon Northwest122 Indoor Model Supplies155 Indy RC Sales138-139 J-5 Enterprises 65 Jomar Products 127 K&B Manufacturing 162 K&S Engineering 121 Kin-Craft Mfg Inc 160 Kraft RC Electronics 65 Kraft Systems 117 Kustom KraftsmanshiP 122 Litco Systems 19 Lone Star Models 127 MACS Products 127 Majestic Models 162 Mallory Models 83 McDaniel RC Service 124 Jim Messers Quality Model Products Midwest Products7 Mills Airplane Models136 Miniature Aircraft Supply31 Model Engineering Norwalk152 Model Helicopter USA133 Model Merchant126 Model Products Corp125 Mutchiers Hobbies128-129 Mr Gs Products120 Jerry Nelson & Co150 162 Nor-Cal Avionics Inc20 Orline RC Aircraft113 Pacific Saliplanes120 Peck-Polymers112 Pica Products9 Pierce Aero Co116 Dave Platt Models125 Plaza Hobby Craft14 Precision Sanding Tools160 Proctor Enterprises154 Prop Shop14 RF Enterprises140 RJL Industries156 RLFProducts118 Repla-Tech International137 Roush Mfg141 Saf-Flite Models157 Sailplane Factory4 Satellite City163 Sheldons Hobby Shop84 Sig Mfg Co13 Square Loop Hobby Center158 Sterling Models20 Sullivan Products133 Tatone Products83 Taylor-Craft Ltd156 Teja Engineering65 Top Flite Models1 Trail Mfg158 WE Technical Services 154158 Whale Hobbies118 Williams Brothers4 Windsor Propeller Co 150160 World EnginesBackdover Xplorer Enterprises132 CA Zaic Co132 Zenith Aviation Books5 Nick Ziroli Models120 124 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX result Loudens lager whipped 20 Pitts since 1968 anything Pitts won big American meet Super Chipmunk flown great Harold Krier Now doubts about effectiveness combination Loudenslager monoplane erased good Along Pitta jockeys Henry Haigh Clint McHenry Bill Thomas Bob Davis Betty Everest Leo made long trek USSR 1976 World Championships first test airplane against rest world official results contest mean little cheating officials obvious winning Soviet pilots emharassed Americans disillu sioned talked seriously about retir ing sport Back home time quickly healed wounds entire team back action Leo again won National Championship time margin almost 500 points out total 18000 no longer surprise see monoplane top Loudenslagers basic idea working out just way planned Though appreciably better best modified Pitts Laser its long wings long fuselage graceful movements scored points No doubt about airplane looks better performing rolling 3600 turns vertical hesitation rolls stubby violent little biplane Leos third straight national victory tied him respect then-retired Gene Soucy came 1977 time almost 600 points over young Kermit Weeks hottest modified Pitts S-I Ss Again Laser monoplane field 19 again Leo qualified lead US team against world 1978 World Championships guaran teed very important future sport failed lot honest 1976 meet USSR would probably never another major rules changes made prior contest host Czech Aeroclub taken very unusual step formally announcing would fair contest Still no doubted need Eastern European socialist govern ment grab opportunity score points home folks momentarily eclipsing alltoo-obvious successes capitalism As turned out 1978 World Champion ships could hardly have fairly conscientiously run Czechs did everything possible ensure meet conducted way sports founders wanted itto sportsmanship second safety future game seems assured contest just getting underway no US team expected treated fairly results first four rounds flying announced did believe up-and-up first round brought Loudenslager Laser 200 Fine Quality Flying Models Catalog Si 50 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books 4, 444 MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 ~Maicnea rerrurmuflC System TOP PERFORMANCE K&8 ENGINES 16 Airplane 4 Marine K&8 FUELSK&B GLOW PLUGS 7 Blends4 chsiceS Matched Finish System BEST APPEARANCE K&8 FIBtRGLASS CLOTH K&B Micrs-Ballsons FILLER K&8 SUPER POXY RtSIN K&B SUPER POXY THINNtR K&B SUPER POXY PRIMER K&B SUPER POXY PAINT K&B MIXING CUPS FiiF 162 Model Aviation Marco Avenue Reno Nevada 89509Jj 702-322-0664
Edition: Model Aviation - 1982/11
Page Numbers: 86, 87, 88, 158, 160, 162
NO OCR TEXT LETS GET thing straight start its Stephens Akin Its Laser 200 its probably best aerobatic airplane world Sure started out life Stephens wing plan form same Stephens tail looks about same does landing gear take off turtledeck replace bubble canopy whole airplane looks like Stephens Akro isnt can take Leo Louden slagers word should know being guy has spent past 14 years developing airplane consistently beats Pitts Zlins Yaks Flying unique Laser 200 Leo has won 1980 World Cham pionship six last seven US National Aerobatics Championships Except brief mental lapse 1978 would now seeking unprecedented third-straight World Cham pionship Freely acknowledging Stephens Akro its designers inspiration Leo nevertheless insists airplane called Laser 200 200 being its horsepower incorrectly re ferring Stephens fears people will ex pect Laser-like performance plansbuilt Stephens Akros no plans avail able Laser nor does have thought publishing future now second Laser 200 action built Leos close friend co-worker Jim Roberts registered N2OJJbut other simi lar airplanes appear coming years will strictly work develop own modifications Stephens As exam ple Henry Haighs Superstar N8HH looks lot like Laser 200 copy Haigh perennial runner-up Loudenslager prolific aerobatic designers worked out own improvements old design story Leo Laser 200 goes back scene first official US National Aerobatics Championships held part first Reno Air Races September 1964 wasnt precision competition flying new solution problem high stick forces super-spade comes play aileron has displaced few degrees thus lightening load turned Loudenslager air show flying Duane Cole Bob Hoover USAF Thunderbirds saw ultimate mastery flying Leo left life Air Force GI summer 1966 begun career flying American Airlines tender age 22 about same time picked aerobatics number-one sideline being pointed di rection modified deHavilland Chipmunk Lindsay Parsons pioneers Ameri can competitive aerobatics magazine article August 1967 about prototype Stephens Akro its pilot Margaret Ritchie attracted Leo airplane thought building lacked appeal knew much work entailed having built cars racing wanted get air quickly possible fortunate able get designer Clayton Stephens built one-piece wood wing Gerry Zimmerman build fuselage enlargement Formula racer Miss San Bernardino raced aerobatic ace Art Scholl January 1971 stock Stephens Akro assembled though Leos enthusiasm understandably tempered loss Margaret Ritchie first airplane crash during practice two years earlier Since generally November 1982 87 ne Instrument panel pretty conventional bare minimum flight navigational aids its clip center special holding diagrams some difficult aerobatic flight sequences ever flown Laser 200s origin big Formula racer evident its mid-wing design waythe cylinder head cheek fairings tapered back wing root agreed accident resulted pilots physical problems rather anything herent airplane Leo went ahead plans initial test flight made middle April 1971 led immediately long process modification has turned Stephens Laser 200 Roll control first problem ailerons no neutral feel Leo explained closed up gap could stop airplane point ability stop exactly pilot wants much 30 off vital airplane flown serious competition Leos first contest ever Brookhaven Long Island summer 1971 Skipping usual entering point Sportsman Cate gory Leo went right Intermediate won beating pair Decathalon pilots exactly sort contest have since become accustomed being single Pitts Special seen competition Loudenslagers first victory new Stephens Akro few weeks later came 1971 US Na tional Championships also happened qualifying meet selection US team destined go 1972 World Championships spot team hardly realistic goal rookie still plenty pressure learn read Aresti System maneuver symbols design Free-Style sequence met requirements could flown inexperienced aerobat long before contest mechanical prob lems began appear form failed ex haust valve broken oil line meant new cylinder expenditure money could afford loss precious practice time Leo starting see draw backs developing airplane himself same time two-week practice session contest site near Oak Grove TX consisted mainly some 30 flights design prove Free-Style se quence pushed myself limit Leo ex plained sore muscle hurt whimpered cried little bit realized over head end practice period about 20 hours flying difficult ma neuvers expected face contest just second contest first try Unlimited Category Leo indeed over head never attempted vertical snap roll new Stephens other airplane yet fly Unknown sequence pilot got fly prior practice Out 13 entries placed 10th far behind well known pilots day Gene Soucy Charlie Hillard Bob Herendeen Art Scholl behind some other newcomers big-time like Tom Poberezny Bill Thomas worked way up gradual way Leo impressed officials Aerobatic Club America enough land spot US team assistant John Armstrong would judge Being center action Salon de Provence France proved immense help coming years Leo already set sights World Championships first dual matter perfecting himself air plane 1 aware 1971 aircraft unstable maneuvers such outside snap roll control pressures extremely high After flying arm aching built second horizontal tail get boost up moved elevator hinge rearward working equally serious problem stick-snatch under some conditions stick would return neutral would lock extreme position invited Florida legendary self-taught genius aerobatic design Curtis Pitts though Leo totally involved chief rival marvelous little Pitts Special its creator gra ciously volunteered advice adding 20% area horizontal stabilizer should cure stick-snatch problem As Pitts ideas worked 1972 improving airplane ex perience self-confidence Leo placed 5th National Championships good enough qualify place US team except qualifying meets held odd-numbered years World Championships held even-numbered years 1973 slipped 7th since no country bid 1974 World Championships no US team fail make 1974 worked way up 4th Nationals less 2% behind winner though no immediate World Championships sight star clearly rising No longer unanimous pilot needed Pitts Special running 1975 obviously year decision Leo Continued page 160 88 Model Aviation Among changes dictated hundreds hours high-G flying dual bracing wires enlarged tail surfaces Just part travels Loudensagerand Laser 200 theywon seven US World Championship dominate sport well designed fixed landing gear can almost clean retracts its lot lighter simpler has tapered aluminum strut fiberglass wheel pants quadra engine PERFORMANCE 37 lbs capacity 35 cc develops over 20 HP 8000-10000 RPM Part credit impressive performance weight ratio due Schnuerle porting combined piston port induction QUALITY Precision machining continuous testing run ever engine factor has made Quadra No 1 world component detail design Quadra provides ultimate quality reliability Model II needle main bearings Model Ill e/needle main bearings Model 111111 le bearing piston pin Roller bearing crank pin 4 WAYS BETTER IN POWERING LARGE SCALE AIRCRAFT SERVICEABILITY simplicity design provides accessible maintenance free engine market ECONOMY Quadra offers value money other comparable engine Alter youve flown Quadra Youll never safis tied wifh anyfhing less TML Manutaciuring Ltd Huron Industrial Park Canada Avenue Huron Park Ontario Canada NOM lYS Telephone 519 2286514 Telen 064-7181 plans collector shows Yn-in brass takeoff line tank pressure primary airflow engine cooling exits fuselage through two holes cowl hatch surround muffler exhaust tubes An optional cooling exit through lightening hole top Former F3 shown plans coming through open cockpit can lead some fuel oil spray through open cockpit wheel pants made light balsa stiffened /32-in plywood sheet inside Brass steel flanges shape flanges shown plans inside windshield outline silver-soldered onto landing gear mounting wheel pants method allows wheel pants removed necessary Fairings 3/32-in music wire landing gear made two 5/33 -in balsa sheets glued epoxy shown plans tail wheel gear formed l/l~in piano wire wire-wrapped onto piece of/16-in plywood glued onto bottom model Finishing After filling sanding com pleted entire model covered Japan ese tissue doped Graupner Cloy diluted 50% acetone wing tail surfaces filled five six undiluted coats fuselage wing stabilizer applied coat VIK varnish lightly dry-sanded after half days hardening sprayed several coats VIK paint sanding very fine sandpaper after first coat Since Graupner VIK dopes generally available US standard fuel-proof dope should used first coat open framework should shrink tissue tight subsequent coats should Non Warranty Repair Service Kraft Futaba Electronic RIG Equipment 204 N StoneLi]Greenwood MS 38930 Telephone 1601 453-1699 low-shrink dope reduce chance warping framework decorations put Humbrol paint After finishing plane mounted windshield cut sheet rhodoid celluloid butyrate sheet plastic stiffened frame aluminum tubing tubing slit longitudinally shaped coated epoxy inside Insert windshield pinch tube Cut two small slits fuselage insert flattened tubing Glue fill intersection Finish joint paint making windshield intersection disappear cowling shaped hollowed pieces -in balsa attached fuselage screw through flange mounted Former F2 Two guide pins inside cowling align cowling flush fuselage sides Finally remember little care cockpit FreeFIight RIC Assist SUPER BRIGADIER 66 66 SpanFor 25 Power Plan ant24 hnneIRfC Old favorite #RCF F2 $995ca R/G version has ailerons SUPER BRIGADIER 44 1/2A RIC Free-Flight Assist Plan set $495 44 Span RIC Training#RCFF-3 Prices Complete Plans Sub Assembly Detailed Parts Lists Add $200 Mailing Tube Send $100 retundabie Complete Information Kits some really great things comel 1 58 Model Aviation DEALER INQUIRIES /NV/TED CONTIOLINE TANKS PRDF/LECDMBATRAT WIDE & NARROW WEDGE 15 -- 6 oz Capacities UNIFLOW & STINDD Custom Dliii Fuels Ingredients detailed brochure5OC stamps/check oni CAROLINA TAFFINDER 8345 Delhi Road Charleston Hgts SC 29405 A Power Panel POWER starter-pump-plug AMMETER indication plug condition ALL 12-Volt battery Battery Cord MatIng Plugs 3 x 5 Easy Mounting AWT Quality HobbyProducts Fiber-Glass Tapes Fiber-Glass Cloths Polyester Resin Air-O-Fill Micro-Balloons Primers Thinner Engine Oil Engine Cleaner Protective Gloves Dust Masks Sponge & Applicator Kits Ask products local hobby shop send self-addressed stamped envelope free catalogue discount KIN-CRAYr MFG INC RJ/2 Box 481E Ashland Kentucky 41101 606 928-4763 OnlyThe standard Power Panel shown also available two new versions smaller $2395 Mini Panel flexible Pual Range Panel gives option 1-1/2 2 volts glow plug Flying weight finished model 56 ozThe lead-out position should between 18% 20% wing chord use aluminum Veco Fox spinner Remember keep total weight down avoid use unproductive nose weight extra care should taken build tail plane stabilizer elevator rudder very light engine use HP 40 quite powerful lighter some other en gines general size custom-made muffler also lightweight mounted well back fuselage tending move center gravity rearward cooling system muffler engine runs well over heating power loss HP 40 powerful easy handle use 9/32-in spraybar Spectre has very pleasing look build am sure will give much pleasure has given Happy flying Laser Airplane/Berliner Continued page 88 found way blocked least temporarily Early year discovered crack main spar wing complete surprise ashe long aware unbraced wing might strong enough repeated violent maneuvers Such disappointment airplane gave serious thought dumping getting first new super competition versions Improves Engine Life Restriction Type 100-Mesh Screen Removable Cleaning Threaded Two-Part Aluminum Body 160 Model Aviation $119 Dealer Pitts Special type S-i T Curtis Pitts offered him switch monoplane pioneering considerable success its chief rival would have admission failure having wasted yearsonly admit biplane best very least couldnt done great deal very serious thought during period realized important airplane Stephens Akro N lOLL become airplane meant competition So much aerobatic airplanes two wings new stronger wing being built Leo went work rest airplane since couldnt fly wing anyway cut off fuselage just behind cockpit threw away front part keeping backbone tail already broken two longerons wing mount come close jumping out occasion new fuselage built lighter stronger thus safer new wing built craftsman Texas modified NACA 23012 airfoil routed spar beefed-up center section giving ultimate strength excess 10 Gs wing plan form remained same originally designed Eddie Allenbaugh Leo gives credit lot good numbers still airplane Allenbaugh best known racing designs such Jackrabbit 1930s died before prototype Stephens completed though Leo feels designed longerons tail racing high-speed snap rolls gives Allenbaugh lot credit eventual success design Along major structural changes fuselage came obvious change replacement heavy plexigiass bubble low-drag canopy fairs smoothly new turtledeck cut weight added lateral area knife-edge flight almost incidental cruising speed rose 136mph 158 mph can blessing long crosscountry flights contests work finished major en gineering help Bud Storms Joe Oshin ski Jr long before 1975 National Championships 1976 World Champion ship qualifications nothing left original Stephens Akro fuselage frame work aft pilots seat some time before Canadian air show promoter hung Laser name craft very much new airplane deserving name its own Aligned againstLeo andtheLaserforthe 1975 Unlimited title no fewer 19 men woman flying Pitts Specials division clear could Professionals Choicedetailing adds immeasurably planes appearance Solve Sanding Problems SPEED STIX Disposable Sanding Tools Inconvenient Hard-to-Sand Spots S Use Wet Dry 03 Sanding Grades 100 120 160 $485 Regular SPEED STIX 9 Stix 3 grade 1/4 3/8 1/2 diam $295 Mini SPEED STIX Set 6 1/8 3/16 1/4 diam 120 & 180 Orders Postpaid Order Direct Precision Sanding Tools 2930 Skyview Ave Pueblo CO 81008 Eve Phone 303 542-6200 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX AMA Membership161 Ace RC Inc140 Aero Publishers132 Aerotrend Products6 Air Design133 AirtronicsInside Front Cover A-justo-jig Co153 Phase Art136 Americas Hobby Center123 Andrews Aircraft Model Co 156 Applied Design Corp 132 BK Products 140 Balsa USA 119 Richard G Barron 156 Bavarian Precision ProductS 84 Behrens Plan Service 150 Brownsell Flag & Decal 155 BuckeyeBalsa 131 Byron Originals 21 CB Associates64 California Model Imports64 Carlberg Companies150 Carolina-Taffinder158 Johnnie Casburn Mfg Co89 Charlies RC Goodies113 Circus Hobbies142-148 Consumers Hobby Corp134-135 Contempo Enterprises116 Coverite151 Cox Hobbies2 DA Enterprises 160 C&D Engineering 154 DG Products 130 DGM Industries 118 Jim Denaro Model Products 117 Bob Dively Model Aircraft 157 Du-Bro Products 8 Eastcraft Specialty Products 14 Eastern Soaring Supplies 137 Enya Model Products Co de Back Cover FAI Model Supply155 FHS supply Inc4 Flightilne Shirts137 Flyline Models127 Fourmost Products112 Fox Mfg153 Full Command Systems126 Fults Tooling121 Futaba Corp America85 Gemini Models Inc131 Gorham Model Products141 Great Lakes Model & Mold Co31 Grish Brothers118 124 GT Models130 Carl Goldberg Models15 Great Planes Model Mfg Co159 Historic Aviation11 Hobby Barn114-115 Hobby Capitol Distributors10 Hobby Horn149 Hobby Radio Shop131 Hobby Shack157 Hobbypoxy Products154 155 Horizon Model Crafts149 Homer Sales131 Hunt Models130 Identity Check Co152 Ikon Northwest122 Indoor Model Supplies155 Indy RC Sales138-139 J-5 Enterprises 65 Jomar Products 127 K&B Manufacturing 162 K&S Engineering 121 Kin-Craft Mfg Inc 160 Kraft RC Electronics 65 Kraft Systems 117 Kustom KraftsmanshiP 122 Litco Systems 19 Lone Star Models 127 MACS Products 127 Majestic Models 162 Mallory Models 83 McDaniel RC Service 124 Jim Messers Quality Model Products Midwest Products7 Mills Airplane Models136 Miniature Aircraft Supply31 Model Engineering Norwalk152 Model Helicopter USA133 Model Merchant126 Model Products Corp125 Mutchiers Hobbies128-129 Mr Gs Products120 Jerry Nelson & Co150 162 Nor-Cal Avionics Inc20 Orline RC Aircraft113 Pacific Saliplanes120 Peck-Polymers112 Pica Products9 Pierce Aero Co116 Dave Platt Models125 Plaza Hobby Craft14 Precision Sanding Tools160 Proctor Enterprises154 Prop Shop14 RF Enterprises140 RJL Industries156 RLFProducts118 Repla-Tech International137 Roush Mfg141 Saf-Flite Models157 Sailplane Factory4 Satellite City163 Sheldons Hobby Shop84 Sig Mfg Co13 Square Loop Hobby Center158 Sterling Models20 Sullivan Products133 Tatone Products83 Taylor-Craft Ltd156 Teja Engineering65 Top Flite Models1 Trail Mfg158 WE Technical Services 154158 Whale Hobbies118 Williams Brothers4 Windsor Propeller Co 150160 World EnginesBackdover Xplorer Enterprises132 CA Zaic Co132 Zenith Aviation Books5 Nick Ziroli Models120 124 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX result Loudens lager whipped 20 Pitts since 1968 anything Pitts won big American meet Super Chipmunk flown great Harold Krier Now doubts about effectiveness combination Loudenslager monoplane erased good Along Pitta jockeys Henry Haigh Clint McHenry Bill Thomas Bob Davis Betty Everest Leo made long trek USSR 1976 World Championships first test airplane against rest world official results contest mean little cheating officials obvious winning Soviet pilots emharassed Americans disillu sioned talked seriously about retir ing sport Back home time quickly healed wounds entire team back action Leo again won National Championship time margin almost 500 points out total 18000 no longer surprise see monoplane top Loudenslagers basic idea working out just way planned Though appreciably better best modified Pitts Laser its long wings long fuselage graceful movements scored points No doubt about airplane looks better performing rolling 3600 turns vertical hesitation rolls stubby violent little biplane Leos third straight national victory tied him respect then-retired Gene Soucy came 1977 time almost 600 points over young Kermit Weeks hottest modified Pitts S-I Ss Again Laser monoplane field 19 again Leo qualified lead US team against world 1978 World Championships guaran teed very important future sport failed lot honest 1976 meet USSR would probably never another major rules changes made prior contest host Czech Aeroclub taken very unusual step formally announcing would fair contest Still no doubted need Eastern European socialist govern ment grab opportunity score points home folks momentarily eclipsing alltoo-obvious successes capitalism As turned out 1978 World Champion ships could hardly have fairly conscientiously run Czechs did everything possible ensure meet conducted way sports founders wanted itto sportsmanship second safety future game seems assured contest just getting underway no US team expected treated fairly results first four rounds flying announced did believe up-and-up first round brought Loudenslager Laser 200 Fine Quality Flying Models Catalog Si 50 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books 4, 444 MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 ~Maicnea rerrurmuflC System TOP PERFORMANCE K&8 ENGINES 16 Airplane 4 Marine K&8 FUELSK&B GLOW PLUGS 7 Blends4 chsiceS Matched Finish System BEST APPEARANCE K&8 FIBtRGLASS CLOTH K&B Micrs-Ballsons FILLER K&8 SUPER POXY RtSIN K&B SUPER POXY THINNtR K&B SUPER POXY PRIMER K&B SUPER POXY PAINT K&B MIXING CUPS FiiF 162 Model Aviation Marco Avenue Reno Nevada 89509Jj 702-322-0664
Edition: Model Aviation - 1982/11
Page Numbers: 86, 87, 88, 158, 160, 162
NO OCR TEXT LETS GET thing straight start its Stephens Akin Its Laser 200 its probably best aerobatic airplane world Sure started out life Stephens wing plan form same Stephens tail looks about same does landing gear take off turtledeck replace bubble canopy whole airplane looks like Stephens Akro isnt can take Leo Louden slagers word should know being guy has spent past 14 years developing airplane consistently beats Pitts Zlins Yaks Flying unique Laser 200 Leo has won 1980 World Cham pionship six last seven US National Aerobatics Championships Except brief mental lapse 1978 would now seeking unprecedented third-straight World Cham pionship Freely acknowledging Stephens Akro its designers inspiration Leo nevertheless insists airplane called Laser 200 200 being its horsepower incorrectly re ferring Stephens fears people will ex pect Laser-like performance plansbuilt Stephens Akros no plans avail able Laser nor does have thought publishing future now second Laser 200 action built Leos close friend co-worker Jim Roberts registered N2OJJbut other simi lar airplanes appear coming years will strictly work develop own modifications Stephens As exam ple Henry Haighs Superstar N8HH looks lot like Laser 200 copy Haigh perennial runner-up Loudenslager prolific aerobatic designers worked out own improvements old design story Leo Laser 200 goes back scene first official US National Aerobatics Championships held part first Reno Air Races September 1964 wasnt precision competition flying new solution problem high stick forces super-spade comes play aileron has displaced few degrees thus lightening load turned Loudenslager air show flying Duane Cole Bob Hoover USAF Thunderbirds saw ultimate mastery flying Leo left life Air Force GI summer 1966 begun career flying American Airlines tender age 22 about same time picked aerobatics number-one sideline being pointed di rection modified deHavilland Chipmunk Lindsay Parsons pioneers Ameri can competitive aerobatics magazine article August 1967 about prototype Stephens Akro its pilot Margaret Ritchie attracted Leo airplane thought building lacked appeal knew much work entailed having built cars racing wanted get air quickly possible fortunate able get designer Clayton Stephens built one-piece wood wing Gerry Zimmerman build fuselage enlargement Formula racer Miss San Bernardino raced aerobatic ace Art Scholl January 1971 stock Stephens Akro assembled though Leos enthusiasm understandably tempered loss Margaret Ritchie first airplane crash during practice two years earlier Since generally November 1982 87 ne Instrument panel pretty conventional bare minimum flight navigational aids its clip center special holding diagrams some difficult aerobatic flight sequences ever flown Laser 200s origin big Formula racer evident its mid-wing design waythe cylinder head cheek fairings tapered back wing root agreed accident resulted pilots physical problems rather anything herent airplane Leo went ahead plans initial test flight made middle April 1971 led immediately long process modification has turned Stephens Laser 200 Roll control first problem ailerons no neutral feel Leo explained closed up gap could stop airplane point ability stop exactly pilot wants much 30 off vital airplane flown serious competition Leos first contest ever Brookhaven Long Island summer 1971 Skipping usual entering point Sportsman Cate gory Leo went right Intermediate won beating pair Decathalon pilots exactly sort contest have since become accustomed being single Pitts Special seen competition Loudenslagers first victory new Stephens Akro few weeks later came 1971 US Na tional Championships also happened qualifying meet selection US team destined go 1972 World Championships spot team hardly realistic goal rookie still plenty pressure learn read Aresti System maneuver symbols design Free-Style sequence met requirements could flown inexperienced aerobat long before contest mechanical prob lems began appear form failed ex haust valve broken oil line meant new cylinder expenditure money could afford loss precious practice time Leo starting see draw backs developing airplane himself same time two-week practice session contest site near Oak Grove TX consisted mainly some 30 flights design prove Free-Style se quence pushed myself limit Leo ex plained sore muscle hurt whimpered cried little bit realized over head end practice period about 20 hours flying difficult ma neuvers expected face contest just second contest first try Unlimited Category Leo indeed over head never attempted vertical snap roll new Stephens other airplane yet fly Unknown sequence pilot got fly prior practice Out 13 entries placed 10th far behind well known pilots day Gene Soucy Charlie Hillard Bob Herendeen Art Scholl behind some other newcomers big-time like Tom Poberezny Bill Thomas worked way up gradual way Leo impressed officials Aerobatic Club America enough land spot US team assistant John Armstrong would judge Being center action Salon de Provence France proved immense help coming years Leo already set sights World Championships first dual matter perfecting himself air plane 1 aware 1971 aircraft unstable maneuvers such outside snap roll control pressures extremely high After flying arm aching built second horizontal tail get boost up moved elevator hinge rearward working equally serious problem stick-snatch under some conditions stick would return neutral would lock extreme position invited Florida legendary self-taught genius aerobatic design Curtis Pitts though Leo totally involved chief rival marvelous little Pitts Special its creator gra ciously volunteered advice adding 20% area horizontal stabilizer should cure stick-snatch problem As Pitts ideas worked 1972 improving airplane ex perience self-confidence Leo placed 5th National Championships good enough qualify place US team except qualifying meets held odd-numbered years World Championships held even-numbered years 1973 slipped 7th since no country bid 1974 World Championships no US team fail make 1974 worked way up 4th Nationals less 2% behind winner though no immediate World Championships sight star clearly rising No longer unanimous pilot needed Pitts Special running 1975 obviously year decision Leo Continued page 160 88 Model Aviation Among changes dictated hundreds hours high-G flying dual bracing wires enlarged tail surfaces Just part travels Loudensagerand Laser 200 theywon seven US World Championship dominate sport well designed fixed landing gear can almost clean retracts its lot lighter simpler has tapered aluminum strut fiberglass wheel pants quadra engine PERFORMANCE 37 lbs capacity 35 cc develops over 20 HP 8000-10000 RPM Part credit impressive performance weight ratio due Schnuerle porting combined piston port induction QUALITY Precision machining continuous testing run ever engine factor has made Quadra No 1 world component detail design Quadra provides ultimate quality reliability Model II needle main bearings Model Ill e/needle main bearings Model 111111 le bearing piston pin Roller bearing crank pin 4 WAYS BETTER IN POWERING LARGE SCALE AIRCRAFT SERVICEABILITY simplicity design provides accessible maintenance free engine market ECONOMY Quadra offers value money other comparable engine Alter youve flown Quadra Youll never safis tied wifh anyfhing less TML Manutaciuring Ltd Huron Industrial Park Canada Avenue Huron Park Ontario Canada NOM lYS Telephone 519 2286514 Telen 064-7181 plans collector shows Yn-in brass takeoff line tank pressure primary airflow engine cooling exits fuselage through two holes cowl hatch surround muffler exhaust tubes An optional cooling exit through lightening hole top Former F3 shown plans coming through open cockpit can lead some fuel oil spray through open cockpit wheel pants made light balsa stiffened /32-in plywood sheet inside Brass steel flanges shape flanges shown plans inside windshield outline silver-soldered onto landing gear mounting wheel pants method allows wheel pants removed necessary Fairings 3/32-in music wire landing gear made two 5/33 -in balsa sheets glued epoxy shown plans tail wheel gear formed l/l~in piano wire wire-wrapped onto piece of/16-in plywood glued onto bottom model Finishing After filling sanding com pleted entire model covered Japan ese tissue doped Graupner Cloy diluted 50% acetone wing tail surfaces filled five six undiluted coats fuselage wing stabilizer applied coat VIK varnish lightly dry-sanded after half days hardening sprayed several coats VIK paint sanding very fine sandpaper after first coat Since Graupner VIK dopes generally available US standard fuel-proof dope should used first coat open framework should shrink tissue tight subsequent coats should Non Warranty Repair Service Kraft Futaba Electronic RIG Equipment 204 N StoneLi]Greenwood MS 38930 Telephone 1601 453-1699 low-shrink dope reduce chance warping framework decorations put Humbrol paint After finishing plane mounted windshield cut sheet rhodoid celluloid butyrate sheet plastic stiffened frame aluminum tubing tubing slit longitudinally shaped coated epoxy inside Insert windshield pinch tube Cut two small slits fuselage insert flattened tubing Glue fill intersection Finish joint paint making windshield intersection disappear cowling shaped hollowed pieces -in balsa attached fuselage screw through flange mounted Former F2 Two guide pins inside cowling align cowling flush fuselage sides Finally remember little care cockpit FreeFIight RIC Assist SUPER BRIGADIER 66 66 SpanFor 25 Power Plan ant24 hnneIRfC Old favorite #RCF F2 $995ca R/G version has ailerons SUPER BRIGADIER 44 1/2A RIC Free-Flight Assist Plan set $495 44 Span RIC Training#RCFF-3 Prices Complete Plans Sub Assembly Detailed Parts Lists Add $200 Mailing Tube Send $100 retundabie Complete Information Kits some really great things comel 1 58 Model Aviation DEALER INQUIRIES /NV/TED CONTIOLINE TANKS PRDF/LECDMBATRAT WIDE & NARROW WEDGE 15 -- 6 oz Capacities UNIFLOW & STINDD Custom Dliii Fuels Ingredients detailed brochure5OC stamps/check oni CAROLINA TAFFINDER 8345 Delhi Road Charleston Hgts SC 29405 A Power Panel POWER starter-pump-plug AMMETER indication plug condition ALL 12-Volt battery Battery Cord MatIng Plugs 3 x 5 Easy Mounting AWT Quality HobbyProducts Fiber-Glass Tapes Fiber-Glass Cloths Polyester Resin Air-O-Fill Micro-Balloons Primers Thinner Engine Oil Engine Cleaner Protective Gloves Dust Masks Sponge & Applicator Kits Ask products local hobby shop send self-addressed stamped envelope free catalogue discount KIN-CRAYr MFG INC RJ/2 Box 481E Ashland Kentucky 41101 606 928-4763 OnlyThe standard Power Panel shown also available two new versions smaller $2395 Mini Panel flexible Pual Range Panel gives option 1-1/2 2 volts glow plug Flying weight finished model 56 ozThe lead-out position should between 18% 20% wing chord use aluminum Veco Fox spinner Remember keep total weight down avoid use unproductive nose weight extra care should taken build tail plane stabilizer elevator rudder very light engine use HP 40 quite powerful lighter some other en gines general size custom-made muffler also lightweight mounted well back fuselage tending move center gravity rearward cooling system muffler engine runs well over heating power loss HP 40 powerful easy handle use 9/32-in spraybar Spectre has very pleasing look build am sure will give much pleasure has given Happy flying Laser Airplane/Berliner Continued page 88 found way blocked least temporarily Early year discovered crack main spar wing complete surprise ashe long aware unbraced wing might strong enough repeated violent maneuvers Such disappointment airplane gave serious thought dumping getting first new super competition versions Improves Engine Life Restriction Type 100-Mesh Screen Removable Cleaning Threaded Two-Part Aluminum Body 160 Model Aviation $119 Dealer Pitts Special type S-i T Curtis Pitts offered him switch monoplane pioneering considerable success its chief rival would have admission failure having wasted yearsonly admit biplane best very least couldnt done great deal very serious thought during period realized important airplane Stephens Akro N lOLL become airplane meant competition So much aerobatic airplanes two wings new stronger wing being built Leo went work rest airplane since couldnt fly wing anyway cut off fuselage just behind cockpit threw away front part keeping backbone tail already broken two longerons wing mount come close jumping out occasion new fuselage built lighter stronger thus safer new wing built craftsman Texas modified NACA 23012 airfoil routed spar beefed-up center section giving ultimate strength excess 10 Gs wing plan form remained same originally designed Eddie Allenbaugh Leo gives credit lot good numbers still airplane Allenbaugh best known racing designs such Jackrabbit 1930s died before prototype Stephens completed though Leo feels designed longerons tail racing high-speed snap rolls gives Allenbaugh lot credit eventual success design Along major structural changes fuselage came obvious change replacement heavy plexigiass bubble low-drag canopy fairs smoothly new turtledeck cut weight added lateral area knife-edge flight almost incidental cruising speed rose 136mph 158 mph can blessing long crosscountry flights contests work finished major en gineering help Bud Storms Joe Oshin ski Jr long before 1975 National Championships 1976 World Champion ship qualifications nothing left original Stephens Akro fuselage frame work aft pilots seat some time before Canadian air show promoter hung Laser name craft very much new airplane deserving name its own Aligned againstLeo andtheLaserforthe 1975 Unlimited title no fewer 19 men woman flying Pitts Specials division clear could Professionals Choicedetailing adds immeasurably planes appearance Solve Sanding Problems SPEED STIX Disposable Sanding Tools Inconvenient Hard-to-Sand Spots S Use Wet Dry 03 Sanding Grades 100 120 160 $485 Regular SPEED STIX 9 Stix 3 grade 1/4 3/8 1/2 diam $295 Mini SPEED STIX Set 6 1/8 3/16 1/4 diam 120 & 180 Orders Postpaid Order Direct Precision Sanding Tools 2930 Skyview Ave Pueblo CO 81008 Eve Phone 303 542-6200 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX AMA Membership161 Ace RC Inc140 Aero Publishers132 Aerotrend Products6 Air Design133 AirtronicsInside Front Cover A-justo-jig Co153 Phase Art136 Americas Hobby Center123 Andrews Aircraft Model Co 156 Applied Design Corp 132 BK Products 140 Balsa USA 119 Richard G Barron 156 Bavarian Precision ProductS 84 Behrens Plan Service 150 Brownsell Flag & Decal 155 BuckeyeBalsa 131 Byron Originals 21 CB Associates64 California Model Imports64 Carlberg Companies150 Carolina-Taffinder158 Johnnie Casburn Mfg Co89 Charlies RC Goodies113 Circus Hobbies142-148 Consumers Hobby Corp134-135 Contempo Enterprises116 Coverite151 Cox Hobbies2 DA Enterprises 160 C&D Engineering 154 DG Products 130 DGM Industries 118 Jim Denaro Model Products 117 Bob Dively Model Aircraft 157 Du-Bro Products 8 Eastcraft Specialty Products 14 Eastern Soaring Supplies 137 Enya Model Products Co de Back Cover FAI Model Supply155 FHS supply Inc4 Flightilne Shirts137 Flyline Models127 Fourmost Products112 Fox Mfg153 Full Command Systems126 Fults Tooling121 Futaba Corp America85 Gemini Models Inc131 Gorham Model Products141 Great Lakes Model & Mold Co31 Grish Brothers118 124 GT Models130 Carl Goldberg Models15 Great Planes Model Mfg Co159 Historic Aviation11 Hobby Barn114-115 Hobby Capitol Distributors10 Hobby Horn149 Hobby Radio Shop131 Hobby Shack157 Hobbypoxy Products154 155 Horizon Model Crafts149 Homer Sales131 Hunt Models130 Identity Check Co152 Ikon Northwest122 Indoor Model Supplies155 Indy RC Sales138-139 J-5 Enterprises 65 Jomar Products 127 K&B Manufacturing 162 K&S Engineering 121 Kin-Craft Mfg Inc 160 Kraft RC Electronics 65 Kraft Systems 117 Kustom KraftsmanshiP 122 Litco Systems 19 Lone Star Models 127 MACS Products 127 Majestic Models 162 Mallory Models 83 McDaniel RC Service 124 Jim Messers Quality Model Products Midwest Products7 Mills Airplane Models136 Miniature Aircraft Supply31 Model Engineering Norwalk152 Model Helicopter USA133 Model Merchant126 Model Products Corp125 Mutchiers Hobbies128-129 Mr Gs Products120 Jerry Nelson & Co150 162 Nor-Cal Avionics Inc20 Orline RC Aircraft113 Pacific Saliplanes120 Peck-Polymers112 Pica Products9 Pierce Aero Co116 Dave Platt Models125 Plaza Hobby Craft14 Precision Sanding Tools160 Proctor Enterprises154 Prop Shop14 RF Enterprises140 RJL Industries156 RLFProducts118 Repla-Tech International137 Roush Mfg141 Saf-Flite Models157 Sailplane Factory4 Satellite City163 Sheldons Hobby Shop84 Sig Mfg Co13 Square Loop Hobby Center158 Sterling Models20 Sullivan Products133 Tatone Products83 Taylor-Craft Ltd156 Teja Engineering65 Top Flite Models1 Trail Mfg158 WE Technical Services 154158 Whale Hobbies118 Williams Brothers4 Windsor Propeller Co 150160 World EnginesBackdover Xplorer Enterprises132 CA Zaic Co132 Zenith Aviation Books5 Nick Ziroli Models120 124 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX result Loudens lager whipped 20 Pitts since 1968 anything Pitts won big American meet Super Chipmunk flown great Harold Krier Now doubts about effectiveness combination Loudenslager monoplane erased good Along Pitta jockeys Henry Haigh Clint McHenry Bill Thomas Bob Davis Betty Everest Leo made long trek USSR 1976 World Championships first test airplane against rest world official results contest mean little cheating officials obvious winning Soviet pilots emharassed Americans disillu sioned talked seriously about retir ing sport Back home time quickly healed wounds entire team back action Leo again won National Championship time margin almost 500 points out total 18000 no longer surprise see monoplane top Loudenslagers basic idea working out just way planned Though appreciably better best modified Pitts Laser its long wings long fuselage graceful movements scored points No doubt about airplane looks better performing rolling 3600 turns vertical hesitation rolls stubby violent little biplane Leos third straight national victory tied him respect then-retired Gene Soucy came 1977 time almost 600 points over young Kermit Weeks hottest modified Pitts S-I Ss Again Laser monoplane field 19 again Leo qualified lead US team against world 1978 World Championships guaran teed very important future sport failed lot honest 1976 meet USSR would probably never another major rules changes made prior contest host Czech Aeroclub taken very unusual step formally announcing would fair contest Still no doubted need Eastern European socialist govern ment grab opportunity score points home folks momentarily eclipsing alltoo-obvious successes capitalism As turned out 1978 World Champion ships could hardly have fairly conscientiously run Czechs did everything possible ensure meet conducted way sports founders wanted itto sportsmanship second safety future game seems assured contest just getting underway no US team expected treated fairly results first four rounds flying announced did believe up-and-up first round brought Loudenslager Laser 200 Fine Quality Flying Models Catalog Si 50 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books 4, 444 MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 ~Maicnea rerrurmuflC System TOP PERFORMANCE K&8 ENGINES 16 Airplane 4 Marine K&8 FUELSK&B GLOW PLUGS 7 Blends4 chsiceS Matched Finish System BEST APPEARANCE K&8 FIBtRGLASS CLOTH K&B Micrs-Ballsons FILLER K&8 SUPER POXY RtSIN K&B SUPER POXY THINNtR K&B SUPER POXY PRIMER K&B SUPER POXY PAINT K&B MIXING CUPS FiiF 162 Model Aviation Marco Avenue Reno Nevada 89509Jj 702-322-0664
Edition: Model Aviation - 1982/11
Page Numbers: 86, 87, 88, 158, 160, 162
NO OCR TEXT LETS GET thing straight start its Stephens Akin Its Laser 200 its probably best aerobatic airplane world Sure started out life Stephens wing plan form same Stephens tail looks about same does landing gear take off turtledeck replace bubble canopy whole airplane looks like Stephens Akro isnt can take Leo Louden slagers word should know being guy has spent past 14 years developing airplane consistently beats Pitts Zlins Yaks Flying unique Laser 200 Leo has won 1980 World Cham pionship six last seven US National Aerobatics Championships Except brief mental lapse 1978 would now seeking unprecedented third-straight World Cham pionship Freely acknowledging Stephens Akro its designers inspiration Leo nevertheless insists airplane called Laser 200 200 being its horsepower incorrectly re ferring Stephens fears people will ex pect Laser-like performance plansbuilt Stephens Akros no plans avail able Laser nor does have thought publishing future now second Laser 200 action built Leos close friend co-worker Jim Roberts registered N2OJJbut other simi lar airplanes appear coming years will strictly work develop own modifications Stephens As exam ple Henry Haighs Superstar N8HH looks lot like Laser 200 copy Haigh perennial runner-up Loudenslager prolific aerobatic designers worked out own improvements old design story Leo Laser 200 goes back scene first official US National Aerobatics Championships held part first Reno Air Races September 1964 wasnt precision competition flying new solution problem high stick forces super-spade comes play aileron has displaced few degrees thus lightening load turned Loudenslager air show flying Duane Cole Bob Hoover USAF Thunderbirds saw ultimate mastery flying Leo left life Air Force GI summer 1966 begun career flying American Airlines tender age 22 about same time picked aerobatics number-one sideline being pointed di rection modified deHavilland Chipmunk Lindsay Parsons pioneers Ameri can competitive aerobatics magazine article August 1967 about prototype Stephens Akro its pilot Margaret Ritchie attracted Leo airplane thought building lacked appeal knew much work entailed having built cars racing wanted get air quickly possible fortunate able get designer Clayton Stephens built one-piece wood wing Gerry Zimmerman build fuselage enlargement Formula racer Miss San Bernardino raced aerobatic ace Art Scholl January 1971 stock Stephens Akro assembled though Leos enthusiasm understandably tempered loss Margaret Ritchie first airplane crash during practice two years earlier Since generally November 1982 87 ne Instrument panel pretty conventional bare minimum flight navigational aids its clip center special holding diagrams some difficult aerobatic flight sequences ever flown Laser 200s origin big Formula racer evident its mid-wing design waythe cylinder head cheek fairings tapered back wing root agreed accident resulted pilots physical problems rather anything herent airplane Leo went ahead plans initial test flight made middle April 1971 led immediately long process modification has turned Stephens Laser 200 Roll control first problem ailerons no neutral feel Leo explained closed up gap could stop airplane point ability stop exactly pilot wants much 30 off vital airplane flown serious competition Leos first contest ever Brookhaven Long Island summer 1971 Skipping usual entering point Sportsman Cate gory Leo went right Intermediate won beating pair Decathalon pilots exactly sort contest have since become accustomed being single Pitts Special seen competition Loudenslagers first victory new Stephens Akro few weeks later came 1971 US Na tional Championships also happened qualifying meet selection US team destined go 1972 World Championships spot team hardly realistic goal rookie still plenty pressure learn read Aresti System maneuver symbols design Free-Style sequence met requirements could flown inexperienced aerobat long before contest mechanical prob lems began appear form failed ex haust valve broken oil line meant new cylinder expenditure money could afford loss precious practice time Leo starting see draw backs developing airplane himself same time two-week practice session contest site near Oak Grove TX consisted mainly some 30 flights design prove Free-Style se quence pushed myself limit Leo ex plained sore muscle hurt whimpered cried little bit realized over head end practice period about 20 hours flying difficult ma neuvers expected face contest just second contest first try Unlimited Category Leo indeed over head never attempted vertical snap roll new Stephens other airplane yet fly Unknown sequence pilot got fly prior practice Out 13 entries placed 10th far behind well known pilots day Gene Soucy Charlie Hillard Bob Herendeen Art Scholl behind some other newcomers big-time like Tom Poberezny Bill Thomas worked way up gradual way Leo impressed officials Aerobatic Club America enough land spot US team assistant John Armstrong would judge Being center action Salon de Provence France proved immense help coming years Leo already set sights World Championships first dual matter perfecting himself air plane 1 aware 1971 aircraft unstable maneuvers such outside snap roll control pressures extremely high After flying arm aching built second horizontal tail get boost up moved elevator hinge rearward working equally serious problem stick-snatch under some conditions stick would return neutral would lock extreme position invited Florida legendary self-taught genius aerobatic design Curtis Pitts though Leo totally involved chief rival marvelous little Pitts Special its creator gra ciously volunteered advice adding 20% area horizontal stabilizer should cure stick-snatch problem As Pitts ideas worked 1972 improving airplane ex perience self-confidence Leo placed 5th National Championships good enough qualify place US team except qualifying meets held odd-numbered years World Championships held even-numbered years 1973 slipped 7th since no country bid 1974 World Championships no US team fail make 1974 worked way up 4th Nationals less 2% behind winner though no immediate World Championships sight star clearly rising No longer unanimous pilot needed Pitts Special running 1975 obviously year decision Leo Continued page 160 88 Model Aviation Among changes dictated hundreds hours high-G flying dual bracing wires enlarged tail surfaces Just part travels Loudensagerand Laser 200 theywon seven US World Championship dominate sport well designed fixed landing gear can almost clean retracts its lot lighter simpler has tapered aluminum strut fiberglass wheel pants quadra engine PERFORMANCE 37 lbs capacity 35 cc develops over 20 HP 8000-10000 RPM Part credit impressive performance weight ratio due Schnuerle porting combined piston port induction QUALITY Precision machining continuous testing run ever engine factor has made Quadra No 1 world component detail design Quadra provides ultimate quality reliability Model II needle main bearings Model Ill e/needle main bearings Model 111111 le bearing piston pin Roller bearing crank pin 4 WAYS BETTER IN POWERING LARGE SCALE AIRCRAFT SERVICEABILITY simplicity design provides accessible maintenance free engine market ECONOMY Quadra offers value money other comparable engine Alter youve flown Quadra Youll never safis tied wifh anyfhing less TML Manutaciuring Ltd Huron Industrial Park Canada Avenue Huron Park Ontario Canada NOM lYS Telephone 519 2286514 Telen 064-7181 plans collector shows Yn-in brass takeoff line tank pressure primary airflow engine cooling exits fuselage through two holes cowl hatch surround muffler exhaust tubes An optional cooling exit through lightening hole top Former F3 shown plans coming through open cockpit can lead some fuel oil spray through open cockpit wheel pants made light balsa stiffened /32-in plywood sheet inside Brass steel flanges shape flanges shown plans inside windshield outline silver-soldered onto landing gear mounting wheel pants method allows wheel pants removed necessary Fairings 3/32-in music wire landing gear made two 5/33 -in balsa sheets glued epoxy shown plans tail wheel gear formed l/l~in piano wire wire-wrapped onto piece of/16-in plywood glued onto bottom model Finishing After filling sanding com pleted entire model covered Japan ese tissue doped Graupner Cloy diluted 50% acetone wing tail surfaces filled five six undiluted coats fuselage wing stabilizer applied coat VIK varnish lightly dry-sanded after half days hardening sprayed several coats VIK paint sanding very fine sandpaper after first coat Since Graupner VIK dopes generally available US standard fuel-proof dope should used first coat open framework should shrink tissue tight subsequent coats should Non Warranty Repair Service Kraft Futaba Electronic RIG Equipment 204 N StoneLi]Greenwood MS 38930 Telephone 1601 453-1699 low-shrink dope reduce chance warping framework decorations put Humbrol paint After finishing plane mounted windshield cut sheet rhodoid celluloid butyrate sheet plastic stiffened frame aluminum tubing tubing slit longitudinally shaped coated epoxy inside Insert windshield pinch tube Cut two small slits fuselage insert flattened tubing Glue fill intersection Finish joint paint making windshield intersection disappear cowling shaped hollowed pieces -in balsa attached fuselage screw through flange mounted Former F2 Two guide pins inside cowling align cowling flush fuselage sides Finally remember little care cockpit FreeFIight RIC Assist SUPER BRIGADIER 66 66 SpanFor 25 Power Plan ant24 hnneIRfC Old favorite #RCF F2 $995ca R/G version has ailerons SUPER BRIGADIER 44 1/2A RIC Free-Flight Assist Plan set $495 44 Span RIC Training#RCFF-3 Prices Complete Plans Sub Assembly Detailed Parts Lists Add $200 Mailing Tube Send $100 retundabie Complete Information Kits some really great things comel 1 58 Model Aviation DEALER INQUIRIES /NV/TED CONTIOLINE TANKS PRDF/LECDMBATRAT WIDE & NARROW WEDGE 15 -- 6 oz Capacities UNIFLOW & STINDD Custom Dliii Fuels Ingredients detailed brochure5OC stamps/check oni CAROLINA TAFFINDER 8345 Delhi Road Charleston Hgts SC 29405 A Power Panel POWER starter-pump-plug AMMETER indication plug condition ALL 12-Volt battery Battery Cord MatIng Plugs 3 x 5 Easy Mounting AWT Quality HobbyProducts Fiber-Glass Tapes Fiber-Glass Cloths Polyester Resin Air-O-Fill Micro-Balloons Primers Thinner Engine Oil Engine Cleaner Protective Gloves Dust Masks Sponge & Applicator Kits Ask products local hobby shop send self-addressed stamped envelope free catalogue discount KIN-CRAYr MFG INC RJ/2 Box 481E Ashland Kentucky 41101 606 928-4763 OnlyThe standard Power Panel shown also available two new versions smaller $2395 Mini Panel flexible Pual Range Panel gives option 1-1/2 2 volts glow plug Flying weight finished model 56 ozThe lead-out position should between 18% 20% wing chord use aluminum Veco Fox spinner Remember keep total weight down avoid use unproductive nose weight extra care should taken build tail plane stabilizer elevator rudder very light engine use HP 40 quite powerful lighter some other en gines general size custom-made muffler also lightweight mounted well back fuselage tending move center gravity rearward cooling system muffler engine runs well over heating power loss HP 40 powerful easy handle use 9/32-in spraybar Spectre has very pleasing look build am sure will give much pleasure has given Happy flying Laser Airplane/Berliner Continued page 88 found way blocked least temporarily Early year discovered crack main spar wing complete surprise ashe long aware unbraced wing might strong enough repeated violent maneuvers Such disappointment airplane gave serious thought dumping getting first new super competition versions Improves Engine Life Restriction Type 100-Mesh Screen Removable Cleaning Threaded Two-Part Aluminum Body 160 Model Aviation $119 Dealer Pitts Special type S-i T Curtis Pitts offered him switch monoplane pioneering considerable success its chief rival would have admission failure having wasted yearsonly admit biplane best very least couldnt done great deal very serious thought during period realized important airplane Stephens Akro N lOLL become airplane meant competition So much aerobatic airplanes two wings new stronger wing being built Leo went work rest airplane since couldnt fly wing anyway cut off fuselage just behind cockpit threw away front part keeping backbone tail already broken two longerons wing mount come close jumping out occasion new fuselage built lighter stronger thus safer new wing built craftsman Texas modified NACA 23012 airfoil routed spar beefed-up center section giving ultimate strength excess 10 Gs wing plan form remained same originally designed Eddie Allenbaugh Leo gives credit lot good numbers still airplane Allenbaugh best known racing designs such Jackrabbit 1930s died before prototype Stephens completed though Leo feels designed longerons tail racing high-speed snap rolls gives Allenbaugh lot credit eventual success design Along major structural changes fuselage came obvious change replacement heavy plexigiass bubble low-drag canopy fairs smoothly new turtledeck cut weight added lateral area knife-edge flight almost incidental cruising speed rose 136mph 158 mph can blessing long crosscountry flights contests work finished major en gineering help Bud Storms Joe Oshin ski Jr long before 1975 National Championships 1976 World Champion ship qualifications nothing left original Stephens Akro fuselage frame work aft pilots seat some time before Canadian air show promoter hung Laser name craft very much new airplane deserving name its own Aligned againstLeo andtheLaserforthe 1975 Unlimited title no fewer 19 men woman flying Pitts Specials division clear could Professionals Choicedetailing adds immeasurably planes appearance Solve Sanding Problems SPEED STIX Disposable Sanding Tools Inconvenient Hard-to-Sand Spots S Use Wet Dry 03 Sanding Grades 100 120 160 $485 Regular SPEED STIX 9 Stix 3 grade 1/4 3/8 1/2 diam $295 Mini SPEED STIX Set 6 1/8 3/16 1/4 diam 120 & 180 Orders Postpaid Order Direct Precision Sanding Tools 2930 Skyview Ave Pueblo CO 81008 Eve Phone 303 542-6200 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX AMA Membership161 Ace RC Inc140 Aero Publishers132 Aerotrend Products6 Air Design133 AirtronicsInside Front Cover A-justo-jig Co153 Phase Art136 Americas Hobby Center123 Andrews Aircraft Model Co 156 Applied Design Corp 132 BK Products 140 Balsa USA 119 Richard G Barron 156 Bavarian Precision ProductS 84 Behrens Plan Service 150 Brownsell Flag & Decal 155 BuckeyeBalsa 131 Byron Originals 21 CB Associates64 California Model Imports64 Carlberg Companies150 Carolina-Taffinder158 Johnnie Casburn Mfg Co89 Charlies RC Goodies113 Circus Hobbies142-148 Consumers Hobby Corp134-135 Contempo Enterprises116 Coverite151 Cox Hobbies2 DA Enterprises 160 C&D Engineering 154 DG Products 130 DGM Industries 118 Jim Denaro Model Products 117 Bob Dively Model Aircraft 157 Du-Bro Products 8 Eastcraft Specialty Products 14 Eastern Soaring Supplies 137 Enya Model Products Co de Back Cover FAI Model Supply155 FHS supply Inc4 Flightilne Shirts137 Flyline Models127 Fourmost Products112 Fox Mfg153 Full Command Systems126 Fults Tooling121 Futaba Corp America85 Gemini Models Inc131 Gorham Model Products141 Great Lakes Model & Mold Co31 Grish Brothers118 124 GT Models130 Carl Goldberg Models15 Great Planes Model Mfg Co159 Historic Aviation11 Hobby Barn114-115 Hobby Capitol Distributors10 Hobby Horn149 Hobby Radio Shop131 Hobby Shack157 Hobbypoxy Products154 155 Horizon Model Crafts149 Homer Sales131 Hunt Models130 Identity Check Co152 Ikon Northwest122 Indoor Model Supplies155 Indy RC Sales138-139 J-5 Enterprises 65 Jomar Products 127 K&B Manufacturing 162 K&S Engineering 121 Kin-Craft Mfg Inc 160 Kraft RC Electronics 65 Kraft Systems 117 Kustom KraftsmanshiP 122 Litco Systems 19 Lone Star Models 127 MACS Products 127 Majestic Models 162 Mallory Models 83 McDaniel RC Service 124 Jim Messers Quality Model Products Midwest Products7 Mills Airplane Models136 Miniature Aircraft Supply31 Model Engineering Norwalk152 Model Helicopter USA133 Model Merchant126 Model Products Corp125 Mutchiers Hobbies128-129 Mr Gs Products120 Jerry Nelson & Co150 162 Nor-Cal Avionics Inc20 Orline RC Aircraft113 Pacific Saliplanes120 Peck-Polymers112 Pica Products9 Pierce Aero Co116 Dave Platt Models125 Plaza Hobby Craft14 Precision Sanding Tools160 Proctor Enterprises154 Prop Shop14 RF Enterprises140 RJL Industries156 RLFProducts118 Repla-Tech International137 Roush Mfg141 Saf-Flite Models157 Sailplane Factory4 Satellite City163 Sheldons Hobby Shop84 Sig Mfg Co13 Square Loop Hobby Center158 Sterling Models20 Sullivan Products133 Tatone Products83 Taylor-Craft Ltd156 Teja Engineering65 Top Flite Models1 Trail Mfg158 WE Technical Services 154158 Whale Hobbies118 Williams Brothers4 Windsor Propeller Co 150160 World EnginesBackdover Xplorer Enterprises132 CA Zaic Co132 Zenith Aviation Books5 Nick Ziroli Models120 124 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX result Loudens lager whipped 20 Pitts since 1968 anything Pitts won big American meet Super Chipmunk flown great Harold Krier Now doubts about effectiveness combination Loudenslager monoplane erased good Along Pitta jockeys Henry Haigh Clint McHenry Bill Thomas Bob Davis Betty Everest Leo made long trek USSR 1976 World Championships first test airplane against rest world official results contest mean little cheating officials obvious winning Soviet pilots emharassed Americans disillu sioned talked seriously about retir ing sport Back home time quickly healed wounds entire team back action Leo again won National Championship time margin almost 500 points out total 18000 no longer surprise see monoplane top Loudenslagers basic idea working out just way planned Though appreciably better best modified Pitts Laser its long wings long fuselage graceful movements scored points No doubt about airplane looks better performing rolling 3600 turns vertical hesitation rolls stubby violent little biplane Leos third straight national victory tied him respect then-retired Gene Soucy came 1977 time almost 600 points over young Kermit Weeks hottest modified Pitts S-I Ss Again Laser monoplane field 19 again Leo qualified lead US team against world 1978 World Championships guaran teed very important future sport failed lot honest 1976 meet USSR would probably never another major rules changes made prior contest host Czech Aeroclub taken very unusual step formally announcing would fair contest Still no doubted need Eastern European socialist govern ment grab opportunity score points home folks momentarily eclipsing alltoo-obvious successes capitalism As turned out 1978 World Champion ships could hardly have fairly conscientiously run Czechs did everything possible ensure meet conducted way sports founders wanted itto sportsmanship second safety future game seems assured contest just getting underway no US team expected treated fairly results first four rounds flying announced did believe up-and-up first round brought Loudenslager Laser 200 Fine Quality Flying Models Catalog Si 50 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books 4, 444 MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 ~Maicnea rerrurmuflC System TOP PERFORMANCE K&8 ENGINES 16 Airplane 4 Marine K&8 FUELSK&B GLOW PLUGS 7 Blends4 chsiceS Matched Finish System BEST APPEARANCE K&8 FIBtRGLASS CLOTH K&B Micrs-Ballsons FILLER K&8 SUPER POXY RtSIN K&B SUPER POXY THINNtR K&B SUPER POXY PRIMER K&B SUPER POXY PAINT K&B MIXING CUPS FiiF 162 Model Aviation Marco Avenue Reno Nevada 89509Jj 702-322-0664
Edition: Model Aviation - 1982/11
Page Numbers: 86, 87, 88, 158, 160, 162
NO OCR TEXT LETS GET thing straight start its Stephens Akin Its Laser 200 its probably best aerobatic airplane world Sure started out life Stephens wing plan form same Stephens tail looks about same does landing gear take off turtledeck replace bubble canopy whole airplane looks like Stephens Akro isnt can take Leo Louden slagers word should know being guy has spent past 14 years developing airplane consistently beats Pitts Zlins Yaks Flying unique Laser 200 Leo has won 1980 World Cham pionship six last seven US National Aerobatics Championships Except brief mental lapse 1978 would now seeking unprecedented third-straight World Cham pionship Freely acknowledging Stephens Akro its designers inspiration Leo nevertheless insists airplane called Laser 200 200 being its horsepower incorrectly re ferring Stephens fears people will ex pect Laser-like performance plansbuilt Stephens Akros no plans avail able Laser nor does have thought publishing future now second Laser 200 action built Leos close friend co-worker Jim Roberts registered N2OJJbut other simi lar airplanes appear coming years will strictly work develop own modifications Stephens As exam ple Henry Haighs Superstar N8HH looks lot like Laser 200 copy Haigh perennial runner-up Loudenslager prolific aerobatic designers worked out own improvements old design story Leo Laser 200 goes back scene first official US National Aerobatics Championships held part first Reno Air Races September 1964 wasnt precision competition flying new solution problem high stick forces super-spade comes play aileron has displaced few degrees thus lightening load turned Loudenslager air show flying Duane Cole Bob Hoover USAF Thunderbirds saw ultimate mastery flying Leo left life Air Force GI summer 1966 begun career flying American Airlines tender age 22 about same time picked aerobatics number-one sideline being pointed di rection modified deHavilland Chipmunk Lindsay Parsons pioneers Ameri can competitive aerobatics magazine article August 1967 about prototype Stephens Akro its pilot Margaret Ritchie attracted Leo airplane thought building lacked appeal knew much work entailed having built cars racing wanted get air quickly possible fortunate able get designer Clayton Stephens built one-piece wood wing Gerry Zimmerman build fuselage enlargement Formula racer Miss San Bernardino raced aerobatic ace Art Scholl January 1971 stock Stephens Akro assembled though Leos enthusiasm understandably tempered loss Margaret Ritchie first airplane crash during practice two years earlier Since generally November 1982 87 ne Instrument panel pretty conventional bare minimum flight navigational aids its clip center special holding diagrams some difficult aerobatic flight sequences ever flown Laser 200s origin big Formula racer evident its mid-wing design waythe cylinder head cheek fairings tapered back wing root agreed accident resulted pilots physical problems rather anything herent airplane Leo went ahead plans initial test flight made middle April 1971 led immediately long process modification has turned Stephens Laser 200 Roll control first problem ailerons no neutral feel Leo explained closed up gap could stop airplane point ability stop exactly pilot wants much 30 off vital airplane flown serious competition Leos first contest ever Brookhaven Long Island summer 1971 Skipping usual entering point Sportsman Cate gory Leo went right Intermediate won beating pair Decathalon pilots exactly sort contest have since become accustomed being single Pitts Special seen competition Loudenslagers first victory new Stephens Akro few weeks later came 1971 US Na tional Championships also happened qualifying meet selection US team destined go 1972 World Championships spot team hardly realistic goal rookie still plenty pressure learn read Aresti System maneuver symbols design Free-Style sequence met requirements could flown inexperienced aerobat long before contest mechanical prob lems began appear form failed ex haust valve broken oil line meant new cylinder expenditure money could afford loss precious practice time Leo starting see draw backs developing airplane himself same time two-week practice session contest site near Oak Grove TX consisted mainly some 30 flights design prove Free-Style se quence pushed myself limit Leo ex plained sore muscle hurt whimpered cried little bit realized over head end practice period about 20 hours flying difficult ma neuvers expected face contest just second contest first try Unlimited Category Leo indeed over head never attempted vertical snap roll new Stephens other airplane yet fly Unknown sequence pilot got fly prior practice Out 13 entries placed 10th far behind well known pilots day Gene Soucy Charlie Hillard Bob Herendeen Art Scholl behind some other newcomers big-time like Tom Poberezny Bill Thomas worked way up gradual way Leo impressed officials Aerobatic Club America enough land spot US team assistant John Armstrong would judge Being center action Salon de Provence France proved immense help coming years Leo already set sights World Championships first dual matter perfecting himself air plane 1 aware 1971 aircraft unstable maneuvers such outside snap roll control pressures extremely high After flying arm aching built second horizontal tail get boost up moved elevator hinge rearward working equally serious problem stick-snatch under some conditions stick would return neutral would lock extreme position invited Florida legendary self-taught genius aerobatic design Curtis Pitts though Leo totally involved chief rival marvelous little Pitts Special its creator gra ciously volunteered advice adding 20% area horizontal stabilizer should cure stick-snatch problem As Pitts ideas worked 1972 improving airplane ex perience self-confidence Leo placed 5th National Championships good enough qualify place US team except qualifying meets held odd-numbered years World Championships held even-numbered years 1973 slipped 7th since no country bid 1974 World Championships no US team fail make 1974 worked way up 4th Nationals less 2% behind winner though no immediate World Championships sight star clearly rising No longer unanimous pilot needed Pitts Special running 1975 obviously year decision Leo Continued page 160 88 Model Aviation Among changes dictated hundreds hours high-G flying dual bracing wires enlarged tail surfaces Just part travels Loudensagerand Laser 200 theywon seven US World Championship dominate sport well designed fixed landing gear can almost clean retracts its lot lighter simpler has tapered aluminum strut fiberglass wheel pants quadra engine PERFORMANCE 37 lbs capacity 35 cc develops over 20 HP 8000-10000 RPM Part credit impressive performance weight ratio due Schnuerle porting combined piston port induction QUALITY Precision machining continuous testing run ever engine factor has made Quadra No 1 world component detail design Quadra provides ultimate quality reliability Model II needle main bearings Model Ill e/needle main bearings Model 111111 le bearing piston pin Roller bearing crank pin 4 WAYS BETTER IN POWERING LARGE SCALE AIRCRAFT SERVICEABILITY simplicity design provides accessible maintenance free engine market ECONOMY Quadra offers value money other comparable engine Alter youve flown Quadra Youll never safis tied wifh anyfhing less TML Manutaciuring Ltd Huron Industrial Park Canada Avenue Huron Park Ontario Canada NOM lYS Telephone 519 2286514 Telen 064-7181 plans collector shows Yn-in brass takeoff line tank pressure primary airflow engine cooling exits fuselage through two holes cowl hatch surround muffler exhaust tubes An optional cooling exit through lightening hole top Former F3 shown plans coming through open cockpit can lead some fuel oil spray through open cockpit wheel pants made light balsa stiffened /32-in plywood sheet inside Brass steel flanges shape flanges shown plans inside windshield outline silver-soldered onto landing gear mounting wheel pants method allows wheel pants removed necessary Fairings 3/32-in music wire landing gear made two 5/33 -in balsa sheets glued epoxy shown plans tail wheel gear formed l/l~in piano wire wire-wrapped onto piece of/16-in plywood glued onto bottom model Finishing After filling sanding com pleted entire model covered Japan ese tissue doped Graupner Cloy diluted 50% acetone wing tail surfaces filled five six undiluted coats fuselage wing stabilizer applied coat VIK varnish lightly dry-sanded after half days hardening sprayed several coats VIK paint sanding very fine sandpaper after first coat Since Graupner VIK dopes generally available US standard fuel-proof dope should used first coat open framework should shrink tissue tight subsequent coats should Non Warranty Repair Service Kraft Futaba Electronic RIG Equipment 204 N StoneLi]Greenwood MS 38930 Telephone 1601 453-1699 low-shrink dope reduce chance warping framework decorations put Humbrol paint After finishing plane mounted windshield cut sheet rhodoid celluloid butyrate sheet plastic stiffened frame aluminum tubing tubing slit longitudinally shaped coated epoxy inside Insert windshield pinch tube Cut two small slits fuselage insert flattened tubing Glue fill intersection Finish joint paint making windshield intersection disappear cowling shaped hollowed pieces -in balsa attached fuselage screw through flange mounted Former F2 Two guide pins inside cowling align cowling flush fuselage sides Finally remember little care cockpit FreeFIight RIC Assist SUPER BRIGADIER 66 66 SpanFor 25 Power Plan ant24 hnneIRfC Old favorite #RCF F2 $995ca R/G version has ailerons SUPER BRIGADIER 44 1/2A RIC Free-Flight Assist Plan set $495 44 Span RIC Training#RCFF-3 Prices Complete Plans Sub Assembly Detailed Parts Lists Add $200 Mailing Tube Send $100 retundabie Complete Information Kits some really great things comel 1 58 Model Aviation DEALER INQUIRIES /NV/TED CONTIOLINE TANKS PRDF/LECDMBATRAT WIDE & NARROW WEDGE 15 -- 6 oz Capacities UNIFLOW & STINDD Custom Dliii Fuels Ingredients detailed brochure5OC stamps/check oni CAROLINA TAFFINDER 8345 Delhi Road Charleston Hgts SC 29405 A Power Panel POWER starter-pump-plug AMMETER indication plug condition ALL 12-Volt battery Battery Cord MatIng Plugs 3 x 5 Easy Mounting AWT Quality HobbyProducts Fiber-Glass Tapes Fiber-Glass Cloths Polyester Resin Air-O-Fill Micro-Balloons Primers Thinner Engine Oil Engine Cleaner Protective Gloves Dust Masks Sponge & Applicator Kits Ask products local hobby shop send self-addressed stamped envelope free catalogue discount KIN-CRAYr MFG INC RJ/2 Box 481E Ashland Kentucky 41101 606 928-4763 OnlyThe standard Power Panel shown also available two new versions smaller $2395 Mini Panel flexible Pual Range Panel gives option 1-1/2 2 volts glow plug Flying weight finished model 56 ozThe lead-out position should between 18% 20% wing chord use aluminum Veco Fox spinner Remember keep total weight down avoid use unproductive nose weight extra care should taken build tail plane stabilizer elevator rudder very light engine use HP 40 quite powerful lighter some other en gines general size custom-made muffler also lightweight mounted well back fuselage tending move center gravity rearward cooling system muffler engine runs well over heating power loss HP 40 powerful easy handle use 9/32-in spraybar Spectre has very pleasing look build am sure will give much pleasure has given Happy flying Laser Airplane/Berliner Continued page 88 found way blocked least temporarily Early year discovered crack main spar wing complete surprise ashe long aware unbraced wing might strong enough repeated violent maneuvers Such disappointment airplane gave serious thought dumping getting first new super competition versions Improves Engine Life Restriction Type 100-Mesh Screen Removable Cleaning Threaded Two-Part Aluminum Body 160 Model Aviation $119 Dealer Pitts Special type S-i T Curtis Pitts offered him switch monoplane pioneering considerable success its chief rival would have admission failure having wasted yearsonly admit biplane best very least couldnt done great deal very serious thought during period realized important airplane Stephens Akro N lOLL become airplane meant competition So much aerobatic airplanes two wings new stronger wing being built Leo went work rest airplane since couldnt fly wing anyway cut off fuselage just behind cockpit threw away front part keeping backbone tail already broken two longerons wing mount come close jumping out occasion new fuselage built lighter stronger thus safer new wing built craftsman Texas modified NACA 23012 airfoil routed spar beefed-up center section giving ultimate strength excess 10 Gs wing plan form remained same originally designed Eddie Allenbaugh Leo gives credit lot good numbers still airplane Allenbaugh best known racing designs such Jackrabbit 1930s died before prototype Stephens completed though Leo feels designed longerons tail racing high-speed snap rolls gives Allenbaugh lot credit eventual success design Along major structural changes fuselage came obvious change replacement heavy plexigiass bubble low-drag canopy fairs smoothly new turtledeck cut weight added lateral area knife-edge flight almost incidental cruising speed rose 136mph 158 mph can blessing long crosscountry flights contests work finished major en gineering help Bud Storms Joe Oshin ski Jr long before 1975 National Championships 1976 World Champion ship qualifications nothing left original Stephens Akro fuselage frame work aft pilots seat some time before Canadian air show promoter hung Laser name craft very much new airplane deserving name its own Aligned againstLeo andtheLaserforthe 1975 Unlimited title no fewer 19 men woman flying Pitts Specials division clear could Professionals Choicedetailing adds immeasurably planes appearance Solve Sanding Problems SPEED STIX Disposable Sanding Tools Inconvenient Hard-to-Sand Spots S Use Wet Dry 03 Sanding Grades 100 120 160 $485 Regular SPEED STIX 9 Stix 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Enterprises132 CA Zaic Co132 Zenith Aviation Books5 Nick Ziroli Models120 124 ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX ADVERTISERS INDEX result Loudens lager whipped 20 Pitts since 1968 anything Pitts won big American meet Super Chipmunk flown great Harold Krier Now doubts about effectiveness combination Loudenslager monoplane erased good Along Pitta jockeys Henry Haigh Clint McHenry Bill Thomas Bob Davis Betty Everest Leo made long trek USSR 1976 World Championships first test airplane against rest world official results contest mean little cheating officials obvious winning Soviet pilots emharassed Americans disillu sioned talked seriously about retir ing sport Back home time quickly healed wounds entire team back action Leo again won National Championship time margin almost 500 points out total 18000 no longer surprise see monoplane top Loudenslagers basic idea working out just way planned Though appreciably better best modified Pitts Laser its long wings long fuselage graceful movements scored points No doubt about airplane looks better performing rolling 3600 turns vertical hesitation rolls stubby violent little biplane Leos third straight national victory tied him respect then-retired Gene Soucy came 1977 time almost 600 points over young Kermit Weeks hottest modified Pitts S-I Ss Again Laser monoplane field 19 again Leo qualified lead US team against world 1978 World Championships guaran teed very important future sport failed lot honest 1976 meet USSR would probably never another major rules changes made prior contest host Czech Aeroclub taken very unusual step formally announcing would fair contest Still no doubted need Eastern European socialist govern ment grab opportunity score points home folks momentarily eclipsing alltoo-obvious successes capitalism As turned out 1978 World Champion ships could hardly have fairly conscientiously run Czechs did everything possible ensure meet conducted way sports founders wanted itto sportsmanship second safety future game seems assured contest just getting underway no US team expected treated fairly results first four rounds flying announced did believe up-and-up first round brought Loudenslager Laser 200 Fine Quality Flying Models Catalog Si 50 98 RUBBER POWER KITS plus Gliders C/L RIC Accessories Books 4, 444 MAJESTIC MODELS 3273 West 129th Street Cleveland Ohio 44111 ~Maicnea rerrurmuflC System TOP PERFORMANCE K&8 ENGINES 16 Airplane 4 Marine K&8 FUELSK&B GLOW PLUGS 7 Blends4 chsiceS Matched Finish System BEST APPEARANCE K&8 FIBtRGLASS CLOTH K&B Micrs-Ballsons FILLER K&8 SUPER POXY RtSIN K&B SUPER POXY THINNtR K&B SUPER POXY PRIMER K&B SUPER POXY PAINT K&B MIXING CUPS FiiF 162 Model Aviation Marco Avenue Reno Nevada 89509Jj 702-322-0664