QOPS June issue requested readers let know name reliable YS engine parts source Right after issue came out ran Radio Souths Tony Stiliman contest Tony told bone pick about YS parts source request asked asked remembered Id got ten YS sleeve piston combination about eight months ago Well did remember right wrote column Id got ten YS parts him Radio South 9003 N Davis Highway Pensacola FL 32514 phone 1-904/478 6745 Tony told keeps good stock YS parts hand ready ship youve written column long have cover wide range topics dont want go over topic again good reason reason recurring topic controversialsuch downwind turn Ive used columns biplane-versusmonoplane issue Pattern competition may end up way too Another good reason repeating topic strong general interest changing model popu lation have RC fliers entering leaving hobby time Most people reading column werent RC five six years ago So occasionally bring back old topic because its new large percentage readers preceding explanation Im going launch repeat some earlier topics Hey Ron snap roll Show four-point roll common questions readers fliers club field lot maneuvers that difficult perform fliers havent thought through what control inputs required perform snap roll fourpoint roll two good examples snap roll really easy What diffi cult about getting airplane stopped its supposed First lets review snap roll side outside ones difference direction elevator moves Up elevator used its inside snap roll Down elevator input its outside snap roll Snap rolls can initiated either upright inverted flight Fliers generally com fortable doing inside snap rolls upright flight outside snap rolls inverted flight probably because airplane moves away ground Unless flier confident about structural integrity airplane snap roll should itiated engine idle snap roll vi olent maneuver can place high stress airplane remember memorable snap roll did day After maneuver heard terrible clatter ing sound coming airplane landed immediately turned out cast aluminum motor mount airplane broken three pieces engine bouncing around side engine compartment Id recommend first snap roll way upright flight bring engine idle simultaneously apply full Up eleva tor full Left aileron full Left rudder As soon see airplane begin roll let go controls youll probably get snap roll controls held longer may get two snap rolls can give Right aileron Right rudder instead Left fliers right-handed left inside snap rolls feel better may asking both rudder aile ron input required maneuver sim ple answer snap roll stalling ma neuver use elevator aileron no rudder will probably get barrel roll thats another story rudder input causes wing stall unbalanced lift other wing causes violent rolling airplane Some airplanes will snap roll eleva tor rudder input no aileron because rud der can cause wing stall help aileron input However can get re liable snap rolls using three controls about outside snap roll Roll air plane inverted reduce throttle idle simultaneously apply Down elevator Left aileron Left rudder Dont forget air plane will probably inverted recovers Exciting isnt Have fun snap rolls Now four-point roll Ever since learned four-point roll thought graceful pretty maneuvers Pat tern airplane can did mean say Pattern air plane too because sport airplanes have too much dihedral four-point roll Let ex plain Starting upright level flight roll airplane until wings vertical remove aileron input Before wings get vertical feed top rudder rolling right put left rudder wing dihedral right fuselage side area large enough have sufficient rud der authority airplane will now sus tained knife-edge flight right wing down Theres lot ifs good rea son Being able continously maintain knifeedge flight often requires lot trimming done airplane Ive written about several times before Corrective trimming can volve changing wing dihedral adding some aerodynamic foolers accomplish same result Some models will pitch toward can opy top rudder applied knife-edge will pitch away canopy top rudder applied opposite knife-edge right wing up rather down Once again thats other story Lets keep mechanics performing four-point roll assuming airplane capa ble doing pilot moves controls right way 48 Model Aviation Rado Confrol Sport Aerobatics Ron Van Putte III Sleepy Oaks Rd Ft Walton Beach FL 32548 Whats Grandma putting Pattern flight No Its Mike Hayden Baton Rouge LA showing us what takes keep hat head high wind blowing Snapshot taken 1990 Emerald Coast Pattern Champs held EglIn AFB FL Steve Rojecki will compete Tournament Champions Las Vegas Bucker Jungmelster built Dick Hanson Steve did MonoKote job test flight came few days after photos taken Note canopy missing having arrived Dick yet Once youve established first point stop ping roll wings vertical checked path airplane top rudder roll inverted flight remove aileron put Now gets bit sticky As airplane rolling inverted bleed off top rudder ease bit Down elevator right tail wont wiggle air plane will sustained inverted flight Okay youre halfway Roll airplane same direction started out previously wings vertical again remove aileron input As airplane rolling ease off Down elevator put Right rudder did right youll have airplane sustained knife-edge flight left wing down Roll airplane upright easing out top rudder airplane rolls easy doubt anyone will say four-point roll easy anyone has ca pable airplane practices maneuver dili gently can least decently once youll get right may result flying buddies saying beauty worth Yep get dings airplane taking field back use wing stab covers protect dont Well no wonder airplane mess use covers flying surfaces air planes several years material used quilted bedspread fabric purchased fabric store did great job protecting wings hor izontal stabilizer vertical fin inside fabric would snag projections airplane mairing covers difficult apply remove watched Paul Verger Lafayette LA put wing covers Eclipse wings exposed aileron pushrods aileron horns slid right nicely padded great Paul told bought Vellux blanket local K-Mart cut fit sewed cov ers up himself guy hasnt built airplane since Doolitle led Tokyo Raiders Anyway looked Vellux blanket thing market Lady Pepperell Vellux Sensation blanket found stock several discount department stores sell twin-size blanket about $20 full-size about $25 correspondingly larger sizes can probably get three wing stab covers twin-size blanket Continued page 163 Quiet Aviation Arrives Ultimate Engine Starting Simplicity POWER HANDLE COILED CORD Great Runway Restarts Durable Acrylic Non-slip Grip 6 Foot C oiled Cord Holds Ni-Starter Preferred Tray Experts Sport Flyers STABILIZOR Professional Strap Aircraft Quality Aluminum Allows Access High Tech Transmitter Functions RUBBER-AFTER MUFFLER Put away excuses An affordable durable effective noise surpressor available Check out features eAdvanced Silicone Mtl ought weight 1/2 ounce Aerodynamic Inexpensive eDurable Easily Installed NO Power Loss Effective 4-10 db attenuation STABILIZOR$4995 POWER HANDLE & CORD$2495 RUBBER-AFTER MUFFLER$1995 POSTAGE & HANDLINGFREE Washington Resdents Add 8 1%DEALER 150051155 INVITED KDI 10426 SE 206TH P1 WA 98031 854-8053 Dynamic Duo Durability Stand Ready Help Take Encounters Planet Earth DuraPlane II 25-size 3-channel basic flight trainer scuffle ground isnt some thing should have face own may have gotten own dont think model should stand After two team So join up airplanes thatll stick through thick thin Dumcraft Inc 71007 Oidwd Grove Drive Royal 0al NI 48061 DuraBat 40-size 4-channel aerobatic trainer Original design 3 times F3A National Champion CHIP HYDE. JEKYLL SPEC Length 67 Span 66 Wing Area 770 sq Engine 60 size 10cc Basic Kit $205/ Semibuilt Kit $365 Direct trom PATTERN TEK 320H Turtle Creek Ct Tel 408298-0311 San Jose CA951 25Photo Courtcy FUTABA CORP FAX 408298-6538 Amerca August 1990 49 ue iien verger rauls WITS flCIS Van Putte taking wing off Atlanta bought Paul Folding plane holder Radio South commonly called parker Southeast Pattern circuit RC Pylon Racing/Hager Continued page 159 April 22 As usual contests Mother Nature firm control day started out sunny breezy early afternoon real gale blowingbut fortunately came straight down course day Flying curtailed after four rounds Q500 three rounds QM Did know Scat Cat has 16-oz-per-sq-ft wing load ing obvious day Takeoffs land ings often vertical sometimes upside down Nevertheless contest big success 24 entries Q500 18 CCS members up North CD Lany Osborn wishes convey per sonal thanks us supporting event displaying good sportsmanship pro fessionalism made excellent impression Sky Corral members according Larry went long way toward reviving interest racing Pueblo area dont know Sky Corral birthplaces Quarter Midget Seventies recent race before Formula event about five years ago attended Dave Shadel California crowd now Thanks Sky Corral people came out help though several hadnt seen race before welcome new people flew Rick Wilson Jim Cizek Bruce Thompson Don Dea ver Jim Vance Nick Bellino Bob Larson won third place Sportsman first race ever Heres order finish Q500 note S tsman 1 Duane Gall 2 Hal Gar wood 3 Steve Vaughn 5 4 Larry Osbom 5 5 Bob Larson 5 6 Steve Gooderham 7 Tom Neff 5 8 Dave Martinelli 9 Bob Pederson 5 10 Gene Eggert Quarter Midget fast furious al though four entries little planes handled winds better Quickies did coming down chute pylon No 1 added tailwind achieved truly cosmic speeds Larry Osborn took first place honorary non-Nelson-engine category entry nicelooking nice-flying Miss Paranoia P-51 Cox power circa 1979 Martinelli Gall Garwood decided usual make der finish Nelson category topic fu ture debate also first contest un official local Formula Q event flown FQ combination Formula airframe Q500 power plant resulting sort domesti cated Fl eight have built area date three survived until race day due various problems three werent going very fast pilots volunteered sus pend flying after two heats other events could completed best opening-day events weve seen Out 31 airplanes flown 38 heats total 113 flights three wipeouts due pi lot error did inadvertently test crash barriers passed test addition seven first-time racers took airplanes home less piece Thanks Larry Osborn Sky Corral providing us great site great weekend great contest Lets again next year Thanks Duane Keep contest reports coming guys See next month RC Aerobatics/Van Putte Continued page 49 Vellux material three layers DuPont nylon fibers sandwiching two polyurethane foam layers outside feels like deep pile velvet cannot snag anything wife made up set covers about hour Whether can buy same material fab ric store dont know can should cheaper $7 new set cost Check out FF Old-Timers/Baker Continued page 59 RC Gliders started Germans prior WW II way Zaic did much popu larize light Free Flight Gliders try %-in strip rubber about 25 50 ft long about 100 ft line will find pleasant way sport fly Regarding problem towing autorudder advice Use tow hook mounted midline fuselage about 450 ahead line vertical through center-of-gravity will allow tow full length line will get up plane will controllable well sorts cause hook ahead CG will have some leverage Launch bit angle wind model will trying turn away against rudder trim during initial part climb speed builds rudder takes hold will turn wind re lease point will passes over di rection rudder turn other words flight path will sort S-shaped second bit advice flying just joy have no interest what SAM-legal add autorudder aint hard arent going melt toothbrush handles glue build model enjoy old designs using some modern tech niques just now occurred S-turn tow technique described essentially old S-turn Hand-Launched Glider technique throw sidearm left rudder goes accord ing plan banked launch gets right climb ing turn left rudder acting correct right bank S-shaped flight pattern re sults transition left circling glide Onward through fog Walt Kelly used have Pogo say Argo-USA long importer Elfin 249cc diesel replica says unit now going manufactured USA flip side announcement list SAM-approved pre-1950 diesels bet would send list too sells Orwick en gines spark ignition supplies favorite Battleaxe diesel Write 3229 Dianora Dr Palos Verdes Peninsula CA 90274 tel 1213/377-6186 lot talk about too much space left will have typefast Since men tioned diesels need tell old buddy Eric Clutton has new book available $11 postpaid Dr Diesels Diary Wanted Know About Model Diesels can highly recommend book Eric truly diePROPELLERS NEW CYCLE IES 100 THP DESIGN TAILORED HELICAL PITCH DEVELOPED TO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW DIA PITCH THP PRICE 1266V77IzS 136778 146778 1567 16678 NEW PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10T020%INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534 634 72833/,456 8334568 8Io4566/o7 10 45667 67 h I5W 16EW 12 1256 1356 1456 16 678 ii RC PYLON RACING SERIES 500 DIA PITCHPRICE 75N 5AN 8I 677I,8 SERIES 400C 977/7 W WIDE BLADE EW EXTRA WIDE N NARROW August 1990 163 THE LEADER IN COMPETITION
Edition: Model Aviation - 1990/08
Page Numbers: 48, 49, 163
QOPS June issue requested readers let know name reliable YS engine parts source Right after issue came out ran Radio Souths Tony Stiliman contest Tony told bone pick about YS parts source request asked asked remembered Id got ten YS sleeve piston combination about eight months ago Well did remember right wrote column Id got ten YS parts him Radio South 9003 N Davis Highway Pensacola FL 32514 phone 1-904/478 6745 Tony told keeps good stock YS parts hand ready ship youve written column long have cover wide range topics dont want go over topic again good reason reason recurring topic controversialsuch downwind turn Ive used columns biplane-versusmonoplane issue Pattern competition may end up way too Another good reason repeating topic strong general interest changing model popu lation have RC fliers entering leaving hobby time Most people reading column werent RC five six years ago So occasionally bring back old topic because its new large percentage readers preceding explanation Im going launch repeat some earlier topics Hey Ron snap roll Show four-point roll common questions readers fliers club field lot maneuvers that difficult perform fliers havent thought through what control inputs required perform snap roll fourpoint roll two good examples snap roll really easy What diffi cult about getting airplane stopped its supposed First lets review snap roll side outside ones difference direction elevator moves Up elevator used its inside snap roll Down elevator input its outside snap roll Snap rolls can initiated either upright inverted flight Fliers generally com fortable doing inside snap rolls upright flight outside snap rolls inverted flight probably because airplane moves away ground Unless flier confident about structural integrity airplane snap roll should itiated engine idle snap roll vi olent maneuver can place high stress airplane remember memorable snap roll did day After maneuver heard terrible clatter ing sound coming airplane landed immediately turned out cast aluminum motor mount airplane broken three pieces engine bouncing around side engine compartment Id recommend first snap roll way upright flight bring engine idle simultaneously apply full Up eleva tor full Left aileron full Left rudder As soon see airplane begin roll let go controls youll probably get snap roll controls held longer may get two snap rolls can give Right aileron Right rudder instead Left fliers right-handed left inside snap rolls feel better may asking both rudder aile ron input required maneuver sim ple answer snap roll stalling ma neuver use elevator aileron no rudder will probably get barrel roll thats another story rudder input causes wing stall unbalanced lift other wing causes violent rolling airplane Some airplanes will snap roll eleva tor rudder input no aileron because rud der can cause wing stall help aileron input However can get re liable snap rolls using three controls about outside snap roll Roll air plane inverted reduce throttle idle simultaneously apply Down elevator Left aileron Left rudder Dont forget air plane will probably inverted recovers Exciting isnt Have fun snap rolls Now four-point roll Ever since learned four-point roll thought graceful pretty maneuvers Pat tern airplane can did mean say Pattern air plane too because sport airplanes have too much dihedral four-point roll Let ex plain Starting upright level flight roll airplane until wings vertical remove aileron input Before wings get vertical feed top rudder rolling right put left rudder wing dihedral right fuselage side area large enough have sufficient rud der authority airplane will now sus tained knife-edge flight right wing down Theres lot ifs good rea son Being able continously maintain knifeedge flight often requires lot trimming done airplane Ive written about several times before Corrective trimming can volve changing wing dihedral adding some aerodynamic foolers accomplish same result Some models will pitch toward can opy top rudder applied knife-edge will pitch away canopy top rudder applied opposite knife-edge right wing up rather down Once again thats other story Lets keep mechanics performing four-point roll assuming airplane capa ble doing pilot moves controls right way 48 Model Aviation Rado Confrol Sport Aerobatics Ron Van Putte III Sleepy Oaks Rd Ft Walton Beach FL 32548 Whats Grandma putting Pattern flight No Its Mike Hayden Baton Rouge LA showing us what takes keep hat head high wind blowing Snapshot taken 1990 Emerald Coast Pattern Champs held EglIn AFB FL Steve Rojecki will compete Tournament Champions Las Vegas Bucker Jungmelster built Dick Hanson Steve did MonoKote job test flight came few days after photos taken Note canopy missing having arrived Dick yet Once youve established first point stop ping roll wings vertical checked path airplane top rudder roll inverted flight remove aileron put Now gets bit sticky As airplane rolling inverted bleed off top rudder ease bit Down elevator right tail wont wiggle air plane will sustained inverted flight Okay youre halfway Roll airplane same direction started out previously wings vertical again remove aileron input As airplane rolling ease off Down elevator put Right rudder did right youll have airplane sustained knife-edge flight left wing down Roll airplane upright easing out top rudder airplane rolls easy doubt anyone will say four-point roll easy anyone has ca pable airplane practices maneuver dili gently can least decently once youll get right may result flying buddies saying beauty worth Yep get dings airplane taking field back use wing stab covers protect dont Well no wonder airplane mess use covers flying surfaces air planes several years material used quilted bedspread fabric purchased fabric store did great job protecting wings hor izontal stabilizer vertical fin inside fabric would snag projections airplane mairing covers difficult apply remove watched Paul Verger Lafayette LA put wing covers Eclipse wings exposed aileron pushrods aileron horns slid right nicely padded great Paul told bought Vellux blanket local K-Mart cut fit sewed cov ers up himself guy hasnt built airplane since Doolitle led Tokyo Raiders Anyway looked Vellux blanket thing market Lady Pepperell Vellux Sensation blanket found stock several discount department stores sell twin-size blanket about $20 full-size about $25 correspondingly larger sizes can probably get three wing stab covers twin-size blanket Continued page 163 Quiet Aviation Arrives Ultimate Engine Starting Simplicity POWER HANDLE COILED CORD Great Runway Restarts Durable Acrylic Non-slip Grip 6 Foot C oiled Cord Holds Ni-Starter Preferred Tray Experts Sport Flyers STABILIZOR Professional Strap Aircraft Quality Aluminum Allows Access High Tech Transmitter Functions RUBBER-AFTER MUFFLER Put away excuses An affordable durable effective noise surpressor available Check out features eAdvanced Silicone Mtl ought weight 1/2 ounce Aerodynamic Inexpensive eDurable Easily Installed NO Power Loss Effective 4-10 db attenuation STABILIZOR$4995 POWER HANDLE & CORD$2495 RUBBER-AFTER MUFFLER$1995 POSTAGE & HANDLINGFREE Washington Resdents Add 8 1%DEALER 150051155 INVITED KDI 10426 SE 206TH P1 WA 98031 854-8053 Dynamic Duo Durability Stand Ready Help Take Encounters Planet Earth DuraPlane II 25-size 3-channel basic flight trainer scuffle ground isnt some thing should have face own may have gotten own dont think model should stand After two team So join up airplanes thatll stick through thick thin Dumcraft Inc 71007 Oidwd Grove Drive Royal 0al NI 48061 DuraBat 40-size 4-channel aerobatic trainer Original design 3 times F3A National Champion CHIP HYDE. JEKYLL SPEC Length 67 Span 66 Wing Area 770 sq Engine 60 size 10cc Basic Kit $205/ Semibuilt Kit $365 Direct trom PATTERN TEK 320H Turtle Creek Ct Tel 408298-0311 San Jose CA951 25Photo Courtcy FUTABA CORP FAX 408298-6538 Amerca August 1990 49 ue iien verger rauls WITS flCIS Van Putte taking wing off Atlanta bought Paul Folding plane holder Radio South commonly called parker Southeast Pattern circuit RC Pylon Racing/Hager Continued page 159 April 22 As usual contests Mother Nature firm control day started out sunny breezy early afternoon real gale blowingbut fortunately came straight down course day Flying curtailed after four rounds Q500 three rounds QM Did know Scat Cat has 16-oz-per-sq-ft wing load ing obvious day Takeoffs land ings often vertical sometimes upside down Nevertheless contest big success 24 entries Q500 18 CCS members up North CD Lany Osborn wishes convey per sonal thanks us supporting event displaying good sportsmanship pro fessionalism made excellent impression Sky Corral members according Larry went long way toward reviving interest racing Pueblo area dont know Sky Corral birthplaces Quarter Midget Seventies recent race before Formula event about five years ago attended Dave Shadel California crowd now Thanks Sky Corral people came out help though several hadnt seen race before welcome new people flew Rick Wilson Jim Cizek Bruce Thompson Don Dea ver Jim Vance Nick Bellino Bob Larson won third place Sportsman first race ever Heres order finish Q500 note S tsman 1 Duane Gall 2 Hal Gar wood 3 Steve Vaughn 5 4 Larry Osbom 5 5 Bob Larson 5 6 Steve Gooderham 7 Tom Neff 5 8 Dave Martinelli 9 Bob Pederson 5 10 Gene Eggert Quarter Midget fast furious al though four entries little planes handled winds better Quickies did coming down chute pylon No 1 added tailwind achieved truly cosmic speeds Larry Osborn took first place honorary non-Nelson-engine category entry nicelooking nice-flying Miss Paranoia P-51 Cox power circa 1979 Martinelli Gall Garwood decided usual make der finish Nelson category topic fu ture debate also first contest un official local Formula Q event flown FQ combination Formula airframe Q500 power plant resulting sort domesti cated Fl eight have built area date three survived until race day due various problems three werent going very fast pilots volunteered sus pend flying after two heats other events could completed best opening-day events weve seen Out 31 airplanes flown 38 heats total 113 flights three wipeouts due pi lot error did inadvertently test crash barriers passed test addition seven first-time racers took airplanes home less piece Thanks Larry Osborn Sky Corral providing us great site great weekend great contest Lets again next year Thanks Duane Keep contest reports coming guys See next month RC Aerobatics/Van Putte Continued page 49 Vellux material three layers DuPont nylon fibers sandwiching two polyurethane foam layers outside feels like deep pile velvet cannot snag anything wife made up set covers about hour Whether can buy same material fab ric store dont know can should cheaper $7 new set cost Check out FF Old-Timers/Baker Continued page 59 RC Gliders started Germans prior WW II way Zaic did much popu larize light Free Flight Gliders try %-in strip rubber about 25 50 ft long about 100 ft line will find pleasant way sport fly Regarding problem towing autorudder advice Use tow hook mounted midline fuselage about 450 ahead line vertical through center-of-gravity will allow tow full length line will get up plane will controllable well sorts cause hook ahead CG will have some leverage Launch bit angle wind model will trying turn away against rudder trim during initial part climb speed builds rudder takes hold will turn wind re lease point will passes over di rection rudder turn other words flight path will sort S-shaped second bit advice flying just joy have no interest what SAM-legal add autorudder aint hard arent going melt toothbrush handles glue build model enjoy old designs using some modern tech niques just now occurred S-turn tow technique described essentially old S-turn Hand-Launched Glider technique throw sidearm left rudder goes accord ing plan banked launch gets right climb ing turn left rudder acting correct right bank S-shaped flight pattern re sults transition left circling glide Onward through fog Walt Kelly used have Pogo say Argo-USA long importer Elfin 249cc diesel replica says unit now going manufactured USA flip side announcement list SAM-approved pre-1950 diesels bet would send list too sells Orwick en gines spark ignition supplies favorite Battleaxe diesel Write 3229 Dianora Dr Palos Verdes Peninsula CA 90274 tel 1213/377-6186 lot talk about too much space left will have typefast Since men tioned diesels need tell old buddy Eric Clutton has new book available $11 postpaid Dr Diesels Diary Wanted Know About Model Diesels can highly recommend book Eric truly diePROPELLERS NEW CYCLE IES 100 THP DESIGN TAILORED HELICAL PITCH DEVELOPED TO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW DIA PITCH THP PRICE 1266V77IzS 136778 146778 1567 16678 NEW PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10T020%INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534 634 72833/,456 8334568 8Io4566/o7 10 45667 67 h I5W 16EW 12 1256 1356 1456 16 678 ii RC PYLON RACING SERIES 500 DIA PITCHPRICE 75N 5AN 8I 677I,8 SERIES 400C 977/7 W WIDE BLADE EW EXTRA WIDE N NARROW August 1990 163 THE LEADER IN COMPETITION
Edition: Model Aviation - 1990/08
Page Numbers: 48, 49, 163
QOPS June issue requested readers let know name reliable YS engine parts source Right after issue came out ran Radio Souths Tony Stiliman contest Tony told bone pick about YS parts source request asked asked remembered Id got ten YS sleeve piston combination about eight months ago Well did remember right wrote column Id got ten YS parts him Radio South 9003 N Davis Highway Pensacola FL 32514 phone 1-904/478 6745 Tony told keeps good stock YS parts hand ready ship youve written column long have cover wide range topics dont want go over topic again good reason reason recurring topic controversialsuch downwind turn Ive used columns biplane-versusmonoplane issue Pattern competition may end up way too Another good reason repeating topic strong general interest changing model popu lation have RC fliers entering leaving hobby time Most people reading column werent RC five six years ago So occasionally bring back old topic because its new large percentage readers preceding explanation Im going launch repeat some earlier topics Hey Ron snap roll Show four-point roll common questions readers fliers club field lot maneuvers that difficult perform fliers havent thought through what control inputs required perform snap roll fourpoint roll two good examples snap roll really easy What diffi cult about getting airplane stopped its supposed First lets review snap roll side outside ones difference direction elevator moves Up elevator used its inside snap roll Down elevator input its outside snap roll Snap rolls can initiated either upright inverted flight Fliers generally com fortable doing inside snap rolls upright flight outside snap rolls inverted flight probably because airplane moves away ground Unless flier confident about structural integrity airplane snap roll should itiated engine idle snap roll vi olent maneuver can place high stress airplane remember memorable snap roll did day After maneuver heard terrible clatter ing sound coming airplane landed immediately turned out cast aluminum motor mount airplane broken three pieces engine bouncing around side engine compartment Id recommend first snap roll way upright flight bring engine idle simultaneously apply full Up eleva tor full Left aileron full Left rudder As soon see airplane begin roll let go controls youll probably get snap roll controls held longer may get two snap rolls can give Right aileron Right rudder instead Left fliers right-handed left inside snap rolls feel better may asking both rudder aile ron input required maneuver sim ple answer snap roll stalling ma neuver use elevator aileron no rudder will probably get barrel roll thats another story rudder input causes wing stall unbalanced lift other wing causes violent rolling airplane Some airplanes will snap roll eleva tor rudder input no aileron because rud der can cause wing stall help aileron input However can get re liable snap rolls using three controls about outside snap roll Roll air plane inverted reduce throttle idle simultaneously apply Down elevator Left aileron Left rudder Dont forget air plane will probably inverted recovers Exciting isnt Have fun snap rolls Now four-point roll Ever since learned four-point roll thought graceful pretty maneuvers Pat tern airplane can did mean say Pattern air plane too because sport airplanes have too much dihedral four-point roll Let ex plain Starting upright level flight roll airplane until wings vertical remove aileron input Before wings get vertical feed top rudder rolling right put left rudder wing dihedral right fuselage side area large enough have sufficient rud der authority airplane will now sus tained knife-edge flight right wing down Theres lot ifs good rea son Being able continously maintain knifeedge flight often requires lot trimming done airplane Ive written about several times before Corrective trimming can volve changing wing dihedral adding some aerodynamic foolers accomplish same result Some models will pitch toward can opy top rudder applied knife-edge will pitch away canopy top rudder applied opposite knife-edge right wing up rather down Once again thats other story Lets keep mechanics performing four-point roll assuming airplane capa ble doing pilot moves controls right way 48 Model Aviation Rado Confrol Sport Aerobatics Ron Van Putte III Sleepy Oaks Rd Ft Walton Beach FL 32548 Whats Grandma putting Pattern flight No Its Mike Hayden Baton Rouge LA showing us what takes keep hat head high wind blowing Snapshot taken 1990 Emerald Coast Pattern Champs held EglIn AFB FL Steve Rojecki will compete Tournament Champions Las Vegas Bucker Jungmelster built Dick Hanson Steve did MonoKote job test flight came few days after photos taken Note canopy missing having arrived Dick yet Once youve established first point stop ping roll wings vertical checked path airplane top rudder roll inverted flight remove aileron put Now gets bit sticky As airplane rolling inverted bleed off top rudder ease bit Down elevator right tail wont wiggle air plane will sustained inverted flight Okay youre halfway Roll airplane same direction started out previously wings vertical again remove aileron input As airplane rolling ease off Down elevator put Right rudder did right youll have airplane sustained knife-edge flight left wing down Roll airplane upright easing out top rudder airplane rolls easy doubt anyone will say four-point roll easy anyone has ca pable airplane practices maneuver dili gently can least decently once youll get right may result flying buddies saying beauty worth Yep get dings airplane taking field back use wing stab covers protect dont Well no wonder airplane mess use covers flying surfaces air planes several years material used quilted bedspread fabric purchased fabric store did great job protecting wings hor izontal stabilizer vertical fin inside fabric would snag projections airplane mairing covers difficult apply remove watched Paul Verger Lafayette LA put wing covers Eclipse wings exposed aileron pushrods aileron horns slid right nicely padded great Paul told bought Vellux blanket local K-Mart cut fit sewed cov ers up himself guy hasnt built airplane since Doolitle led Tokyo Raiders Anyway looked Vellux blanket thing market Lady Pepperell Vellux Sensation blanket found stock several discount department stores sell twin-size blanket about $20 full-size about $25 correspondingly larger sizes can probably get three wing stab covers twin-size blanket Continued page 163 Quiet Aviation Arrives Ultimate Engine Starting Simplicity POWER HANDLE COILED CORD Great Runway Restarts Durable Acrylic Non-slip Grip 6 Foot C oiled Cord Holds Ni-Starter Preferred Tray Experts Sport Flyers STABILIZOR Professional Strap Aircraft Quality Aluminum Allows Access High Tech Transmitter Functions RUBBER-AFTER MUFFLER Put away excuses An affordable durable effective noise surpressor available Check out features eAdvanced Silicone Mtl ought weight 1/2 ounce Aerodynamic Inexpensive eDurable Easily Installed NO Power Loss Effective 4-10 db attenuation STABILIZOR$4995 POWER HANDLE & CORD$2495 RUBBER-AFTER MUFFLER$1995 POSTAGE & HANDLINGFREE Washington Resdents Add 8 1%DEALER 150051155 INVITED KDI 10426 SE 206TH P1 WA 98031 854-8053 Dynamic Duo Durability Stand Ready Help Take Encounters Planet Earth DuraPlane II 25-size 3-channel basic flight trainer scuffle ground isnt some thing should have face own may have gotten own dont think model should stand After two team So join up airplanes thatll stick through thick thin Dumcraft Inc 71007 Oidwd Grove Drive Royal 0al NI 48061 DuraBat 40-size 4-channel aerobatic trainer Original design 3 times F3A National Champion CHIP HYDE. JEKYLL SPEC Length 67 Span 66 Wing Area 770 sq Engine 60 size 10cc Basic Kit $205/ Semibuilt Kit $365 Direct trom PATTERN TEK 320H Turtle Creek Ct Tel 408298-0311 San Jose CA951 25Photo Courtcy FUTABA CORP FAX 408298-6538 Amerca August 1990 49 ue iien verger rauls WITS flCIS Van Putte taking wing off Atlanta bought Paul Folding plane holder Radio South commonly called parker Southeast Pattern circuit RC Pylon Racing/Hager Continued page 159 April 22 As usual contests Mother Nature firm control day started out sunny breezy early afternoon real gale blowingbut fortunately came straight down course day Flying curtailed after four rounds Q500 three rounds QM Did know Scat Cat has 16-oz-per-sq-ft wing load ing obvious day Takeoffs land ings often vertical sometimes upside down Nevertheless contest big success 24 entries Q500 18 CCS members up North CD Lany Osborn wishes convey per sonal thanks us supporting event displaying good sportsmanship pro fessionalism made excellent impression Sky Corral members according Larry went long way toward reviving interest racing Pueblo area dont know Sky Corral birthplaces Quarter Midget Seventies recent race before Formula event about five years ago attended Dave Shadel California crowd now Thanks Sky Corral people came out help though several hadnt seen race before welcome new people flew Rick Wilson Jim Cizek Bruce Thompson Don Dea ver Jim Vance Nick Bellino Bob Larson won third place Sportsman first race ever Heres order finish Q500 note S tsman 1 Duane Gall 2 Hal Gar wood 3 Steve Vaughn 5 4 Larry Osbom 5 5 Bob Larson 5 6 Steve Gooderham 7 Tom Neff 5 8 Dave Martinelli 9 Bob Pederson 5 10 Gene Eggert Quarter Midget fast furious al though four entries little planes handled winds better Quickies did coming down chute pylon No 1 added tailwind achieved truly cosmic speeds Larry Osborn took first place honorary non-Nelson-engine category entry nicelooking nice-flying Miss Paranoia P-51 Cox power circa 1979 Martinelli Gall Garwood decided usual make der finish Nelson category topic fu ture debate also first contest un official local Formula Q event flown FQ combination Formula airframe Q500 power plant resulting sort domesti cated Fl eight have built area date three survived until race day due various problems three werent going very fast pilots volunteered sus pend flying after two heats other events could completed best opening-day events weve seen Out 31 airplanes flown 38 heats total 113 flights three wipeouts due pi lot error did inadvertently test crash barriers passed test addition seven first-time racers took airplanes home less piece Thanks Larry Osborn Sky Corral providing us great site great weekend great contest Lets again next year Thanks Duane Keep contest reports coming guys See next month RC Aerobatics/Van Putte Continued page 49 Vellux material three layers DuPont nylon fibers sandwiching two polyurethane foam layers outside feels like deep pile velvet cannot snag anything wife made up set covers about hour Whether can buy same material fab ric store dont know can should cheaper $7 new set cost Check out FF Old-Timers/Baker Continued page 59 RC Gliders started Germans prior WW II way Zaic did much popu larize light Free Flight Gliders try %-in strip rubber about 25 50 ft long about 100 ft line will find pleasant way sport fly Regarding problem towing autorudder advice Use tow hook mounted midline fuselage about 450 ahead line vertical through center-of-gravity will allow tow full length line will get up plane will controllable well sorts cause hook ahead CG will have some leverage Launch bit angle wind model will trying turn away against rudder trim during initial part climb speed builds rudder takes hold will turn wind re lease point will passes over di rection rudder turn other words flight path will sort S-shaped second bit advice flying just joy have no interest what SAM-legal add autorudder aint hard arent going melt toothbrush handles glue build model enjoy old designs using some modern tech niques just now occurred S-turn tow technique described essentially old S-turn Hand-Launched Glider technique throw sidearm left rudder goes accord ing plan banked launch gets right climb ing turn left rudder acting correct right bank S-shaped flight pattern re sults transition left circling glide Onward through fog Walt Kelly used have Pogo say Argo-USA long importer Elfin 249cc diesel replica says unit now going manufactured USA flip side announcement list SAM-approved pre-1950 diesels bet would send list too sells Orwick en gines spark ignition supplies favorite Battleaxe diesel Write 3229 Dianora Dr Palos Verdes Peninsula CA 90274 tel 1213/377-6186 lot talk about too much space left will have typefast Since men tioned diesels need tell old buddy Eric Clutton has new book available $11 postpaid Dr Diesels Diary Wanted Know About Model Diesels can highly recommend book Eric truly diePROPELLERS NEW CYCLE IES 100 THP DESIGN TAILORED HELICAL PITCH DEVELOPED TO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW DIA PITCH THP PRICE 1266V77IzS 136778 146778 1567 16678 NEW PRO SERIES 3 NEW HIGH TECH AIRFOIL SECTION 10T020%INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534 634 72833/,456 8334568 8Io4566/o7 10 45667 67 h I5W 16EW 12 1256 1356 1456 16 678 ii RC PYLON RACING SERIES 500 DIA PITCHPRICE 75N 5AN 8I 677I,8 SERIES 400C 977/7 W WIDE BLADE EW EXTRA WIDE N NARROW August 1990 163 THE LEADER IN COMPETITION