Radio Control SOARING Dan Pruss BACK kid could take latest rubber-powered pride joy grocery store have butcher weigh him seemed market street corner butcher acted like family Walking supennarket today 12-ft Sailplane might get far soup pickles aisle did manage get far counter precut pre weighed prepackaged meats con tact butcher would probably through intercom plate glass wall Forget about scale thats OK because David Munson Saint Louis MO has come up gad get calls Weight Stick Its simply length aluminum bar calibrated middle outward pounds ounces use Weight Stick has suspend whatever weighed string end Stick placing Stick table surface has sharp edge have move Stick until teeters tables edge direct reading can made right printed scale scale ranges fraction ounce 10 lb Being solid aluminum measuring inch inch cross section bar straight rigid would also serve well alignment tool spars lead ing trailing edges gadget priced $1395 should hobby shops time read can also order direct Weight/Stick Co PO Box 29952 St Louis MO 63129 Add $200 postage handling Challenge month Heres following specifications should en able sketch model out sketch should able draw few reference lines begin construction However assumed club has reference various airfoil sections profiles three Eppier airfoilslike ones used Curt Wellers flying wing 48 Model Aviation Cull Weller Austrli shows flying wing Above Want build dont need plansread directions column have finished time would take make wing conventional design trickiest part RC installation Below isnt visible transmittar does feature control mixer youll have plane since uses elevons combined ailerons/elevators Model uses plywood keel secure receiver batteries tubes wing-alignment pins design has flown over 200 timesmuch competition Curt has done nicely model presented part 1SF Seminar held near Zurich Switzerland last December specs flying wing shown photos column what its worth de sign approach construction straightforward simple flying wing scribe has ever seen Curt Weller Schubertgasse Austria de signed model has successfully logged over 200 flights bad model especially flying wings thermals best has performed very well Speed Dis tance types tasks specifica tions Wingspan 2600mm Leading Edge Sweep 20Centerline Chord 350mm Centerline Airfoil Eppler 180 Wing tip Chord 220mm Wing tip Airfoil Eppler 184 degree negative incidence El evons 450mm length tip fins winglets 250mm high join two-thirds wing tip wings trailing edge forward see photo Theres modest taper winglets side profile designer claims isnt crit ical winglets also basically flat plates Center Gravity 18% MAC Suggestions start 15% move back 18% range dont exceed 20% Towhook position 75% back wing centerline construction Curt used foam cores Continued page 150 David Munsons Weight/Stick L now market has no moving parts based principle old Archemedes Its calibrated/graduated aluminum bar will weigh anything can hang its cordand can read graduations fractions ounce 10 lb spoiler Installation R ultimate simplicity no cables no horns no linkages get stuck out adjustment Actuation via torque rod removable Magnets hold closed Air pressure closes details column Perma-Grit TM Lifetime * Carbide Sanding Tools Tungsten Carbide grit hardest material next diamond * Outlasts sandpaper 100s times * Tools will load up * Grit cant tear loose * Makes fitting blending fairing pleasure * Fairs IE TE foam undercutting * Rapid stock Removal batter control * Saves time money aggravation * Replaces plane knite rasp ing blocks excellent tools modeler can use Don Lowe Professional Engineer Ask Dealer send check M 0 No CODs DG Products 209 Carrlands Dr Dayton OH 45429 513 294-1192 Tungsten carbide grit brazed steel 9 long tool use balsa hardwoods fiberglass beaded foams epoxy fillers plexiglas Made US Average Modelers Use 1100Flat Coarse/Fine$695 F101 Fiat Fine$695 F102Fiat Coarse$695 1200 us Coarse/Fine$695 1201 1 /8 Tangent Coarse/Fine$695 1202 d Coarse/Fine$625 R203A Reund Coarse/fine$495 R204 d Coarse/Fine$495 Postage Paid Ohio residents add 11% tax TOLEDO/84THIRTIETH ANNUAL RIO EXPOSITION Reserve April 6 7 81984enter competition excit-TOLEDO SPORTS ARENA attend worlds greatesting awards CompetitionONE MAIN STREET radio control model show Wemodels will accepted duringTOLEDO OHIO featuring world sshow hours till 10 am Sunday largest Swap Shops nomorning no entry fee APRIL 6 7& 8 dealers complete refreshmentComplete nc systems will Saturday Nightpresented first second andFRIDAY9am 6pm centersSATURDAY 9am Auction raffles complete ncSUNDAY9am m systems accessories acres free parking Bring latest completely ~nished models display third place winners new Microwave Oven will award ed lucky winner Best Show Open public three great days Weak Signals RIO Club PO Box 5772 Toledo Ohio 43613 May 1984 49 EU UAU~ hinge allows control uuvIz surface removal tools lost pins problems PATENT painting XPENDINGcoveringrepair transportation storage etc Rotate Insert o 90 RC Helicopters/Jolly Continued naoe 146 range attempting fly rotor out range can cause over-revving lugging system depending whether using too much positive negative pitch wrong throttle setting Following rest manual should see Superior assembled problems Next month will cover final set-up flying Superior Until next month flying new Helicopter radios fitted invert-flight switch careful incident fellow club flier using systems hovering reached up flip aileron dual-rate got invert switch instead broken machine boot using invert switch check see can de activate switch control board transmitter good idea Ed Baxter drop appropriate-size wheel collar over offending switch lock place Keep cards letters coming well photos questions BCNU Lary Jolly 5501 W Como Santa Ana CA 92703 RC Soaring/Pruss Continued naqe 49 Wing joiners using steel rods join two wing halves through center keel-like ply wood piece plywood also cradles receiver batteries other photo pretty well explains same photo also shows two fiberglass tubes aid aligning supporting wing rods note caution due youre going cut foam cores After have determined approximate size foam blocks cut both short ends block angle 200 effect will give wing 2O sweep Remember swept-back wing true airfoil must parallel chord line other words can t take rectangular block attach rib templates two ends make cuts cut off 200 sweep expect resulting airfoil section intended have Curt used basic foam/balsa construc tion technique has become quite stan dard type wing-building Wing rod supports spars leading edge part wing Foam removed center section after wing completed radio gear could accommodated intend build up wing using standard built-up methods use old way stacking sheets balsa 3 SIZES 146 3 8-6 126 495 approximate wing ribs size shaping stack between root rib tip rib pretty good way go especially wing case transitions Eppler 180 Eppler 184 Simply have root rib tip rib accurately cut suitable template mate rial such aluminum Formica plywood before stacking lumber between just carve sand away airfoil changes between two templates just fall place laying out wing use favorite wing construction dont forget degree washout Dihedral zero degrees Only two servos needed Nice ever since control surfaces elevonsthat combining functions elevators aileronsyou need mixing capabilities either transmitter airborne system model shown winglets plugged theres tape holding picture formed fit ting extends full wing tip chord length just adds little strength fin tip juncture As flying 200 flights says something design Austria tasks similar F3B flown regular com petition Flying wings frequently have inherent weak point designtheir pitch instability low- high-speed ranges Mr Weller claims design doesnt show tendencies Paul Clements Presents BEAUTIFUL S4A&6 AWARD-WINNING COMPETITOR AMA & PAl PATTERN DESIGN e Designed Manufactured See dealer distributor available send check money order VISA MasterCard plus $700 UPS shipping Paul Clements ITT UWI MODELI AR 2 Paofl lAd 47454 Phone 812J 7233601 WING SPAN ING AREA sq in Basic Kit $9895 MOTOR u in Deluse Kit $14995 WEIGHTB 9 lbs BASIC KIT INCLUDES Fiberglans toselage bulkhead instelled molded fin foam wing ntab cores L6 blocks wires nnnegearwire4tiberglassfapeplans instractions DELUXE KIT INCLUDES abnoe plot balsa hardwood tiberglass wing tips hinges tibergiass pooh rods aileron linkage nnap links LG stropsand screws wing bolts control horns nose gear steering arm Bro throOle linkage Pm-Built Price Magic DragonEngine 25 cu Wing Span 55 Trainer Radio 3 4 Channels balsa ceestrecilee Ready te flea sand mud Sever Ceatrel s hinged ItalIc laming gear 5/32 anne gear strut Fitted campy leetrectlss heckles mad hardweee hudaded Pre-Built Price $12495 Engine 40 Cu Fire Fox Wing Span 52/s Radio 4 Channels heiea ceastmectlea Ready te fise sand Sever Central ear faces hiaged Has heN. wing Hake landing gear AK wheel part moentad seals leatailed Fitted camepy lestractlea heakiet ned hardware hudaded 6 Other ModelsSend Free Brochure 990 16th StreetSead checker M0 Palm HarborCredit Card ecceptad ROAdd $550 LIPS FL 33563shipping 350 PSI erIe DEALER INQUIRIES INWTED 2 ECH RC tB13t78S8560FLree add 5% tel 150 Model Aviation Scale Appearance Simple Assembly No Slots No Pins EBERLES IS YOUR HEADQUARTERS FOR HEIJCOPTERS EBLE& COUPtETE LOGE OF HEUCOPTERS PARTS & ACCESSORIES um o COMPETITOR PRO Fully aerobatic collective pitch plus new added bearings PRO model with ENYA 60X 5 OS6IFSR. 44995 ENYA chrome hell46995 OS 6IFSRH hell46995 O ANUOa4OING TN AVAILAUUTV 0 KALF HWJCOflUS__ BARON 20-collctive pitch 5 BARON 50A MARK ill auto rotation collective pitch .. 29995 BARON SOC custom olective pitch36795 BARON 50 custom BlmckheadMK II46195 o CUSTOM Hal-BOY collective pitch automatic tail rotor compensation & aerobic kit ENYA 60X34995 OS 61FSR35995 ENVA chrome hell37995 OS 61FSRH hell. 95 o SUPER MINIBOY collective pitch autorotation tail ro tor compensatio& aerobic kit ENYA 4OCX28495 ENVA 4SCX29495 OS 4OFSR28995 OS 4SFSR29995 o HEUCOPTER &ENGR*COMBO ENYA6OX OS61FSR HP6I Gold Cup ENVA 60X hell OS 61F8flhell Some engines Endt*&s4pIy please order soon Cal Sot pelces O RADIOS Airtronics Fat*o JR &Kraft AJRTRONICS 6 channel hell standard25496 JR Century seven 4501 seivos25495 PWI Seal Range ci AC NalICOPIiI Send $2 complete catalg Z ORDERING INFORMATION ALL ORDERS SHIPPED DAILY UPS 0425 add 350 $264100add40$101-overadd600 BLUE LABEL- held 30 days Pennsylvania Residents add 6% sales tax add 10% merchandise total COD charge $165 Payment Ebedes simply take order will endeavor answer COD orders cash money order certified check fast service please question may have will assist recommending ri9bt helicopter send certified check money-orderer use credit card Personal checks will particular needs along prompt service equals troublefree lying l Helicopters & Fly Wel Co-Pilot Everytime Fly ICI$ 412586-97669-9 PM 586-7768TO cgjcr 672 PI1TSBURGH RD BUTLER PA 16001E waddle oscillation about verti cal axis sometimes does occur certain high speeds suggestion alleviate tendency came Helmut Wehren feels winglets 20% shorter height chord extended match chord length wing tip airfoil section winglet Eppler 220 yaw would eliminated says paper anyway airfoil winglet would shaped upper camber airfoil would inward sides winglets So have Sailplane plans can built over weekend compact enough can sneak out house under tall brothers flight jacket new RC frequencies means planes air same time flying wing could just advantage look up gaggle 20or soother types Spoiler installation Although shown foam wing installation system could used type wing construction Actuation via torque rod tube smaller crew fastens short sleeve onto torque rod longer screw drivesactually pushesthe spoiler up spoiler aluminum has two pieces tin can material epoxied Small magnets buried wing hold spoiler down via tin can material its closed position Hinging done simply Scotch tape MonoKote Positive actuation up position Airflow over wing closes spoilers Just simpleif simplestof systems setup whole drive system can made removable just pass See Toledo Dan Pruss 131 E Pennington Ln Plainfield IL 60544 RC Old-Timers/Mathews Continued oaoe 51 natural hinge lines rudder elevator would fine 1A-chord balance point would good starting place Goettingen 527 airfoil something ex cess originals A-to-/s horsepower power plant would nice chose present Dragon Fly example low-wing designs could highly competitive 50% flight-time bonus frankly have never seen example Dragon Fly flight find puzzling So wholl first order plan No 2G3 John Pond PO Box 3215 San Jose CA 95156 send photo low wings Paul Forrete Ben Loma CA has winning /2A Texaco rather regularly Peerless Panther thereby proving old wives tales about nasty habits low wings un founded hard work slightlyreduced Sadler Pacemaker Id bet betting kind too will change some preconceived notions published enlarged Panther De cember 1979 Model Aviation Still available MA Full-Size Plan No 283 $5 Panther II SAM-legal due changes nose configuration airfoil section has proven popular sport fliers around world am pres ently designing another Panther around 40 four-stroke anticipate too will jewel Comets Golden Eagle seldom-seen design its three options wing location kit would build see photo ad April 1938 Model Airplane News three versions high- mid- low-wing shown John Pond plan No 7C3 45-in-span design would present some challenges construc tion RC installation would cer tainly something get out Playboy rut Bill Atwoods Starliner still another seldom-seen designyet lots charm potential old ad May 1939 MAN proves point verted Hi-Speed engine Starliner cap tured first place Low-Wing event placed sixth against nearly 400 other models 20-sec-motor-run event fly ing two minutes 53 sec big March 5 meet atPomona CA goes say same sensational model Continued page 1S4 May1984 151
Edition: Model Aviation - 1984/05
Page Numbers: 48, 49, 150, 151
Radio Control SOARING Dan Pruss BACK kid could take latest rubber-powered pride joy grocery store have butcher weigh him seemed market street corner butcher acted like family Walking supennarket today 12-ft Sailplane might get far soup pickles aisle did manage get far counter precut pre weighed prepackaged meats con tact butcher would probably through intercom plate glass wall Forget about scale thats OK because David Munson Saint Louis MO has come up gad get calls Weight Stick Its simply length aluminum bar calibrated middle outward pounds ounces use Weight Stick has suspend whatever weighed string end Stick placing Stick table surface has sharp edge have move Stick until teeters tables edge direct reading can made right printed scale scale ranges fraction ounce 10 lb Being solid aluminum measuring inch inch cross section bar straight rigid would also serve well alignment tool spars lead ing trailing edges gadget priced $1395 should hobby shops time read can also order direct Weight/Stick Co PO Box 29952 St Louis MO 63129 Add $200 postage handling Challenge month Heres following specifications should en able sketch model out sketch should able draw few reference lines begin construction However assumed club has reference various airfoil sections profiles three Eppier airfoilslike ones used Curt Wellers flying wing 48 Model Aviation Cull Weller Austrli shows flying wing Above Want build dont need plansread directions column have finished time would take make wing conventional design trickiest part RC installation Below isnt visible transmittar does feature control mixer youll have plane since uses elevons combined ailerons/elevators Model uses plywood keel secure receiver batteries tubes wing-alignment pins design has flown over 200 timesmuch competition Curt has done nicely model presented part 1SF Seminar held near Zurich Switzerland last December specs flying wing shown photos column what its worth de sign approach construction straightforward simple flying wing scribe has ever seen Curt Weller Schubertgasse Austria de signed model has successfully logged over 200 flights bad model especially flying wings thermals best has performed very well Speed Dis tance types tasks specifica tions Wingspan 2600mm Leading Edge Sweep 20Centerline Chord 350mm Centerline Airfoil Eppler 180 Wing tip Chord 220mm Wing tip Airfoil Eppler 184 degree negative incidence El evons 450mm length tip fins winglets 250mm high join two-thirds wing tip wings trailing edge forward see photo Theres modest taper winglets side profile designer claims isnt crit ical winglets also basically flat plates Center Gravity 18% MAC Suggestions start 15% move back 18% range dont exceed 20% Towhook position 75% back wing centerline construction Curt used foam cores Continued page 150 David Munsons Weight/Stick L now market has no moving parts based principle old Archemedes Its calibrated/graduated aluminum bar will weigh anything can hang its cordand can read graduations fractions ounce 10 lb spoiler Installation R ultimate simplicity no cables no horns no linkages get stuck out adjustment Actuation via torque rod removable Magnets hold closed Air pressure closes details column Perma-Grit TM Lifetime * Carbide Sanding Tools Tungsten Carbide grit hardest material next diamond * Outlasts sandpaper 100s times * Tools will load up * Grit cant tear loose * Makes fitting blending fairing pleasure * Fairs IE TE foam undercutting * Rapid stock Removal batter control * Saves time money aggravation * Replaces plane knite rasp ing blocks excellent tools modeler can use Don Lowe Professional Engineer Ask Dealer send check M 0 No CODs DG Products 209 Carrlands Dr Dayton OH 45429 513 294-1192 Tungsten carbide grit brazed steel 9 long tool use balsa hardwoods fiberglass beaded foams epoxy fillers plexiglas Made US Average Modelers Use 1100Flat Coarse/Fine$695 F101 Fiat Fine$695 F102Fiat Coarse$695 1200 us Coarse/Fine$695 1201 1 /8 Tangent Coarse/Fine$695 1202 d Coarse/Fine$625 R203A Reund Coarse/fine$495 R204 d Coarse/Fine$495 Postage Paid Ohio residents add 11% tax TOLEDO/84THIRTIETH ANNUAL RIO EXPOSITION Reserve April 6 7 81984enter competition excit-TOLEDO SPORTS ARENA attend worlds greatesting awards CompetitionONE MAIN STREET radio control model show Wemodels will accepted duringTOLEDO OHIO featuring world sshow hours till 10 am Sunday largest Swap Shops nomorning no entry fee APRIL 6 7& 8 dealers complete refreshmentComplete nc systems will Saturday Nightpresented first second andFRIDAY9am 6pm centersSATURDAY 9am Auction raffles complete ncSUNDAY9am m systems accessories acres free parking Bring latest completely ~nished models display third place winners new Microwave Oven will award ed lucky winner Best Show Open public three great days Weak Signals RIO Club PO Box 5772 Toledo Ohio 43613 May 1984 49 EU UAU~ hinge allows control uuvIz surface removal tools lost pins problems PATENT painting XPENDINGcoveringrepair transportation storage etc Rotate Insert o 90 RC Helicopters/Jolly Continued naoe 146 range attempting fly rotor out range can cause over-revving lugging system depending whether using too much positive negative pitch wrong throttle setting Following rest manual should see Superior assembled problems Next month will cover final set-up flying Superior Until next month flying new Helicopter radios fitted invert-flight switch careful incident fellow club flier using systems hovering reached up flip aileron dual-rate got invert switch instead broken machine boot using invert switch check see can de activate switch control board transmitter good idea Ed Baxter drop appropriate-size wheel collar over offending switch lock place Keep cards letters coming well photos questions BCNU Lary Jolly 5501 W Como Santa Ana CA 92703 RC Soaring/Pruss Continued naqe 49 Wing joiners using steel rods join two wing halves through center keel-like ply wood piece plywood also cradles receiver batteries other photo pretty well explains same photo also shows two fiberglass tubes aid aligning supporting wing rods note caution due youre going cut foam cores After have determined approximate size foam blocks cut both short ends block angle 200 effect will give wing 2O sweep Remember swept-back wing true airfoil must parallel chord line other words can t take rectangular block attach rib templates two ends make cuts cut off 200 sweep expect resulting airfoil section intended have Curt used basic foam/balsa construc tion technique has become quite stan dard type wing-building Wing rod supports spars leading edge part wing Foam removed center section after wing completed radio gear could accommodated intend build up wing using standard built-up methods use old way stacking sheets balsa 3 SIZES 146 3 8-6 126 495 approximate wing ribs size shaping stack between root rib tip rib pretty good way go especially wing case transitions Eppler 180 Eppler 184 Simply have root rib tip rib accurately cut suitable template mate rial such aluminum Formica plywood before stacking lumber between just carve sand away airfoil changes between two templates just fall place laying out wing use favorite wing construction dont forget degree washout Dihedral zero degrees Only two servos needed Nice ever since control surfaces elevonsthat combining functions elevators aileronsyou need mixing capabilities either transmitter airborne system model shown winglets plugged theres tape holding picture formed fit ting extends full wing tip chord length just adds little strength fin tip juncture As flying 200 flights says something design Austria tasks similar F3B flown regular com petition Flying wings frequently have inherent weak point designtheir pitch instability low- high-speed ranges Mr Weller claims design doesnt show tendencies Paul Clements Presents BEAUTIFUL S4A&6 AWARD-WINNING COMPETITOR AMA & PAl PATTERN DESIGN e Designed Manufactured See dealer distributor available send check money order VISA MasterCard plus $700 UPS shipping Paul Clements ITT UWI MODELI AR 2 Paofl lAd 47454 Phone 812J 7233601 WING SPAN ING AREA sq in Basic Kit $9895 MOTOR u in Deluse Kit $14995 WEIGHTB 9 lbs BASIC KIT INCLUDES Fiberglans toselage bulkhead instelled molded fin foam wing ntab cores L6 blocks wires nnnegearwire4tiberglassfapeplans instractions DELUXE KIT INCLUDES abnoe plot balsa hardwood tiberglass wing tips hinges tibergiass pooh rods aileron linkage nnap links LG stropsand screws wing bolts control horns nose gear steering arm Bro throOle linkage Pm-Built Price Magic DragonEngine 25 cu Wing Span 55 Trainer Radio 3 4 Channels balsa ceestrecilee Ready te flea sand mud Sever Ceatrel s hinged ItalIc laming gear 5/32 anne gear strut Fitted campy leetrectlss heckles mad hardweee hudaded Pre-Built Price $12495 Engine 40 Cu Fire Fox Wing Span 52/s Radio 4 Channels heiea ceastmectlea Ready te fise sand Sever Central ear faces hiaged Has heN. wing Hake landing gear AK wheel part moentad seals leatailed Fitted camepy lestractlea heakiet ned hardware hudaded 6 Other ModelsSend Free Brochure 990 16th StreetSead checker M0 Palm HarborCredit Card ecceptad ROAdd $550 LIPS FL 33563shipping 350 PSI erIe DEALER INQUIRIES INWTED 2 ECH RC tB13t78S8560FLree add 5% tel 150 Model Aviation Scale Appearance Simple Assembly No Slots No Pins EBERLES IS YOUR HEADQUARTERS FOR HEIJCOPTERS EBLE& COUPtETE LOGE OF HEUCOPTERS PARTS & ACCESSORIES um o COMPETITOR PRO Fully aerobatic collective pitch plus new added bearings PRO model with ENYA 60X 5 OS6IFSR. 44995 ENYA chrome hell46995 OS 6IFSRH hell46995 O ANUOa4OING TN AVAILAUUTV 0 KALF HWJCOflUS__ BARON 20-collctive pitch 5 BARON 50A MARK ill auto rotation collective pitch .. 29995 BARON SOC custom olective pitch36795 BARON 50 custom BlmckheadMK II46195 o CUSTOM Hal-BOY collective pitch automatic tail rotor compensation & aerobic kit ENYA 60X34995 OS 61FSR35995 ENVA chrome hell37995 OS 61FSRH hell. 95 o SUPER MINIBOY collective pitch autorotation tail ro tor compensatio& aerobic kit ENYA 4OCX28495 ENVA 4SCX29495 OS 4OFSR28995 OS 4SFSR29995 o HEUCOPTER &ENGR*COMBO ENYA6OX OS61FSR HP6I Gold Cup ENVA 60X hell OS 61F8flhell Some engines Endt*&s4pIy please order soon Cal Sot pelces O RADIOS Airtronics Fat*o JR &Kraft AJRTRONICS 6 channel hell standard25496 JR Century seven 4501 seivos25495 PWI Seal Range ci AC NalICOPIiI Send $2 complete catalg Z ORDERING INFORMATION ALL ORDERS SHIPPED DAILY UPS 0425 add 350 $264100add40$101-overadd600 BLUE LABEL- held 30 days Pennsylvania Residents add 6% sales tax add 10% merchandise total COD charge $165 Payment Ebedes simply take order will endeavor answer COD orders cash money order certified check fast service please question may have will assist recommending ri9bt helicopter send certified check money-orderer use credit card Personal checks will particular needs along prompt service equals troublefree lying l Helicopters & Fly Wel Co-Pilot Everytime Fly ICI$ 412586-97669-9 PM 586-7768TO cgjcr 672 PI1TSBURGH RD BUTLER PA 16001E waddle oscillation about verti cal axis sometimes does occur certain high speeds suggestion alleviate tendency came Helmut Wehren feels winglets 20% shorter height chord extended match chord length wing tip airfoil section winglet Eppler 220 yaw would eliminated says paper anyway airfoil winglet would shaped upper camber airfoil would inward sides winglets So have Sailplane plans can built over weekend compact enough can sneak out house under tall brothers flight jacket new RC frequencies means planes air same time flying wing could just advantage look up gaggle 20or soother types Spoiler installation Although shown foam wing installation system could used type wing construction Actuation via torque rod tube smaller crew fastens short sleeve onto torque rod longer screw drivesactually pushesthe spoiler up spoiler aluminum has two pieces tin can material epoxied Small magnets buried wing hold spoiler down via tin can material its closed position Hinging done simply Scotch tape MonoKote Positive actuation up position Airflow over wing closes spoilers Just simpleif simplestof systems setup whole drive system can made removable just pass See Toledo Dan Pruss 131 E Pennington Ln Plainfield IL 60544 RC Old-Timers/Mathews Continued oaoe 51 natural hinge lines rudder elevator would fine 1A-chord balance point would good starting place Goettingen 527 airfoil something ex cess originals A-to-/s horsepower power plant would nice chose present Dragon Fly example low-wing designs could highly competitive 50% flight-time bonus frankly have never seen example Dragon Fly flight find puzzling So wholl first order plan No 2G3 John Pond PO Box 3215 San Jose CA 95156 send photo low wings Paul Forrete Ben Loma CA has winning /2A Texaco rather regularly Peerless Panther thereby proving old wives tales about nasty habits low wings un founded hard work slightlyreduced Sadler Pacemaker Id bet betting kind too will change some preconceived notions published enlarged Panther De cember 1979 Model Aviation Still available MA Full-Size Plan No 283 $5 Panther II SAM-legal due changes nose configuration airfoil section has proven popular sport fliers around world am pres ently designing another Panther around 40 four-stroke anticipate too will jewel Comets Golden Eagle seldom-seen design its three options wing location kit would build see photo ad April 1938 Model Airplane News three versions high- mid- low-wing shown John Pond plan No 7C3 45-in-span design would present some challenges construc tion RC installation would cer tainly something get out Playboy rut Bill Atwoods Starliner still another seldom-seen designyet lots charm potential old ad May 1939 MAN proves point verted Hi-Speed engine Starliner cap tured first place Low-Wing event placed sixth against nearly 400 other models 20-sec-motor-run event fly ing two minutes 53 sec big March 5 meet atPomona CA goes say same sensational model Continued page 1S4 May1984 151
Edition: Model Aviation - 1984/05
Page Numbers: 48, 49, 150, 151
Radio Control SOARING Dan Pruss BACK kid could take latest rubber-powered pride joy grocery store have butcher weigh him seemed market street corner butcher acted like family Walking supennarket today 12-ft Sailplane might get far soup pickles aisle did manage get far counter precut pre weighed prepackaged meats con tact butcher would probably through intercom plate glass wall Forget about scale thats OK because David Munson Saint Louis MO has come up gad get calls Weight Stick Its simply length aluminum bar calibrated middle outward pounds ounces use Weight Stick has suspend whatever weighed string end Stick placing Stick table surface has sharp edge have move Stick until teeters tables edge direct reading can made right printed scale scale ranges fraction ounce 10 lb Being solid aluminum measuring inch inch cross section bar straight rigid would also serve well alignment tool spars lead ing trailing edges gadget priced $1395 should hobby shops time read can also order direct Weight/Stick Co PO Box 29952 St Louis MO 63129 Add $200 postage handling Challenge month Heres following specifications should en able sketch model out sketch should able draw few reference lines begin construction However assumed club has reference various airfoil sections profiles three Eppier airfoilslike ones used Curt Wellers flying wing 48 Model Aviation Cull Weller Austrli shows flying wing Above Want build dont need plansread directions column have finished time would take make wing conventional design trickiest part RC installation Below isnt visible transmittar does feature control mixer youll have plane since uses elevons combined ailerons/elevators Model uses plywood keel secure receiver batteries tubes wing-alignment pins design has flown over 200 timesmuch competition Curt has done nicely model presented part 1SF Seminar held near Zurich Switzerland last December specs flying wing shown photos column what its worth de sign approach construction straightforward simple flying wing scribe has ever seen Curt Weller Schubertgasse Austria de signed model has successfully logged over 200 flights bad model especially flying wings thermals best has performed very well Speed Dis tance types tasks specifica tions Wingspan 2600mm Leading Edge Sweep 20Centerline Chord 350mm Centerline Airfoil Eppler 180 Wing tip Chord 220mm Wing tip Airfoil Eppler 184 degree negative incidence El evons 450mm length tip fins winglets 250mm high join two-thirds wing tip wings trailing edge forward see photo Theres modest taper winglets side profile designer claims isnt crit ical winglets also basically flat plates Center Gravity 18% MAC Suggestions start 15% move back 18% range dont exceed 20% Towhook position 75% back wing centerline construction Curt used foam cores Continued page 150 David Munsons Weight/Stick L now market has no moving parts based principle old Archemedes Its calibrated/graduated aluminum bar will weigh anything can hang its cordand can read graduations fractions ounce 10 lb spoiler Installation R ultimate simplicity no cables no horns no linkages get stuck out adjustment Actuation via torque rod removable Magnets hold closed Air pressure closes details column Perma-Grit TM Lifetime * Carbide Sanding Tools Tungsten Carbide grit hardest material next diamond * Outlasts sandpaper 100s times * Tools will load up * Grit cant tear loose * Makes fitting blending fairing pleasure * Fairs IE TE foam undercutting * Rapid stock Removal batter control * Saves time money aggravation * Replaces plane knite rasp ing blocks excellent tools modeler can use Don Lowe Professional Engineer Ask Dealer send check M 0 No CODs DG Products 209 Carrlands Dr Dayton OH 45429 513 294-1192 Tungsten carbide grit brazed steel 9 long tool use balsa hardwoods fiberglass beaded foams epoxy fillers plexiglas Made US Average Modelers Use 1100Flat Coarse/Fine$695 F101 Fiat Fine$695 F102Fiat Coarse$695 1200 us Coarse/Fine$695 1201 1 /8 Tangent Coarse/Fine$695 1202 d Coarse/Fine$625 R203A Reund Coarse/fine$495 R204 d Coarse/Fine$495 Postage Paid Ohio residents add 11% tax TOLEDO/84THIRTIETH ANNUAL RIO EXPOSITION Reserve April 6 7 81984enter competition excit-TOLEDO SPORTS ARENA attend worlds greatesting awards CompetitionONE MAIN STREET radio control model show Wemodels will accepted duringTOLEDO OHIO featuring world sshow hours till 10 am Sunday largest Swap Shops nomorning no entry fee APRIL 6 7& 8 dealers complete refreshmentComplete nc systems will Saturday Nightpresented first second andFRIDAY9am 6pm centersSATURDAY 9am Auction raffles complete ncSUNDAY9am m systems accessories acres free parking Bring latest completely ~nished models display third place winners new Microwave Oven will award ed lucky winner Best Show Open public three great days Weak Signals RIO Club PO Box 5772 Toledo Ohio 43613 May 1984 49 EU UAU~ hinge allows control uuvIz surface removal tools lost pins problems PATENT painting XPENDINGcoveringrepair transportation storage etc Rotate Insert o 90 RC Helicopters/Jolly Continued naoe 146 range attempting fly rotor out range can cause over-revving lugging system depending whether using too much positive negative pitch wrong throttle setting Following rest manual should see Superior assembled problems Next month will cover final set-up flying Superior Until next month flying new Helicopter radios fitted invert-flight switch careful incident fellow club flier using systems hovering reached up flip aileron dual-rate got invert switch instead broken machine boot using invert switch check see can de activate switch control board transmitter good idea Ed Baxter drop appropriate-size wheel collar over offending switch lock place Keep cards letters coming well photos questions BCNU Lary Jolly 5501 W Como Santa Ana CA 92703 RC Soaring/Pruss Continued naqe 49 Wing joiners using steel rods join two wing halves through center keel-like ply wood piece plywood also cradles receiver batteries other photo pretty well explains same photo also shows two fiberglass tubes aid aligning supporting wing rods note caution due youre going cut foam cores After have determined approximate size foam blocks cut both short ends block angle 200 effect will give wing 2O sweep Remember swept-back wing true airfoil must parallel chord line other words can t take rectangular block attach rib templates two ends make cuts cut off 200 sweep expect resulting airfoil section intended have Curt used basic foam/balsa construc tion technique has become quite stan dard type wing-building Wing rod supports spars leading edge part wing Foam removed center section after wing completed radio gear could accommodated intend build up wing using standard built-up methods use old way stacking sheets balsa 3 SIZES 146 3 8-6 126 495 approximate wing ribs size shaping stack between root rib tip rib pretty good way go especially wing case transitions Eppler 180 Eppler 184 Simply have root rib tip rib accurately cut suitable template mate rial such aluminum Formica plywood before stacking lumber between just carve sand away airfoil changes between two templates just fall place laying out wing use favorite wing construction dont forget degree washout Dihedral zero degrees Only two servos needed Nice ever since control surfaces elevonsthat combining functions elevators aileronsyou need mixing capabilities either transmitter airborne system model shown winglets plugged theres tape holding picture formed fit ting extends full wing tip chord length just adds little strength fin tip juncture As flying 200 flights says something design Austria tasks similar F3B flown regular com petition Flying wings frequently have inherent weak point designtheir pitch instability low- high-speed ranges Mr Weller claims design doesnt show tendencies Paul Clements Presents BEAUTIFUL S4A&6 AWARD-WINNING COMPETITOR AMA & PAl PATTERN DESIGN e Designed Manufactured See dealer distributor available send check money order VISA MasterCard plus $700 UPS shipping Paul Clements ITT UWI MODELI AR 2 Paofl lAd 47454 Phone 812J 7233601 WING SPAN ING AREA sq in Basic Kit $9895 MOTOR u in Deluse Kit $14995 WEIGHTB 9 lbs BASIC KIT INCLUDES Fiberglans toselage bulkhead instelled molded fin foam wing ntab cores L6 blocks wires nnnegearwire4tiberglassfapeplans instractions DELUXE KIT INCLUDES abnoe plot balsa hardwood tiberglass wing tips hinges tibergiass pooh rods aileron linkage nnap links LG stropsand screws wing bolts control horns nose gear steering arm Bro throOle linkage Pm-Built Price Magic DragonEngine 25 cu Wing Span 55 Trainer Radio 3 4 Channels balsa ceestrecilee Ready te flea sand mud Sever Ceatrel s hinged ItalIc laming gear 5/32 anne gear strut Fitted campy leetrectlss heckles mad hardweee hudaded Pre-Built Price $12495 Engine 40 Cu Fire Fox Wing Span 52/s Radio 4 Channels heiea ceastmectlea Ready te fise sand Sever Central ear faces hiaged Has heN. wing Hake landing gear AK wheel part moentad seals leatailed Fitted camepy lestractlea heakiet ned hardware hudaded 6 Other ModelsSend Free Brochure 990 16th StreetSead checker M0 Palm HarborCredit Card ecceptad ROAdd $550 LIPS FL 33563shipping 350 PSI erIe DEALER INQUIRIES INWTED 2 ECH RC tB13t78S8560FLree add 5% tel 150 Model Aviation Scale Appearance Simple Assembly No Slots No Pins EBERLES IS YOUR HEADQUARTERS FOR HEIJCOPTERS EBLE& COUPtETE LOGE OF HEUCOPTERS PARTS & ACCESSORIES um o COMPETITOR PRO Fully aerobatic collective pitch plus new added bearings PRO model with ENYA 60X 5 OS6IFSR. 44995 ENYA chrome hell46995 OS 6IFSRH hell46995 O ANUOa4OING TN AVAILAUUTV 0 KALF HWJCOflUS__ BARON 20-collctive pitch 5 BARON 50A MARK ill auto rotation collective pitch .. 29995 BARON SOC custom olective pitch36795 BARON 50 custom BlmckheadMK II46195 o CUSTOM Hal-BOY collective pitch automatic tail rotor compensation & aerobic kit ENYA 60X34995 OS 61FSR35995 ENVA chrome hell37995 OS 61FSRH hell. 95 o SUPER MINIBOY collective pitch autorotation tail ro tor compensatio& aerobic kit ENYA 4OCX28495 ENVA 4SCX29495 OS 4OFSR28995 OS 4SFSR29995 o HEUCOPTER &ENGR*COMBO ENYA6OX OS61FSR HP6I Gold Cup ENVA 60X hell OS 61F8flhell Some engines Endt*&s4pIy please order soon Cal Sot pelces O RADIOS Airtronics Fat*o JR &Kraft AJRTRONICS 6 channel hell standard25496 JR Century seven 4501 seivos25495 PWI Seal Range ci AC NalICOPIiI Send $2 complete catalg Z ORDERING INFORMATION ALL ORDERS SHIPPED DAILY UPS 0425 add 350 $264100add40$101-overadd600 BLUE LABEL- held 30 days Pennsylvania Residents add 6% sales tax add 10% merchandise total COD charge $165 Payment Ebedes simply take order will endeavor answer COD orders cash money order certified check fast service please question may have will assist recommending ri9bt helicopter send certified check money-orderer use credit card Personal checks will particular needs along prompt service equals troublefree lying l Helicopters & Fly Wel Co-Pilot Everytime Fly ICI$ 412586-97669-9 PM 586-7768TO cgjcr 672 PI1TSBURGH RD BUTLER PA 16001E waddle oscillation about verti cal axis sometimes does occur certain high speeds suggestion alleviate tendency came Helmut Wehren feels winglets 20% shorter height chord extended match chord length wing tip airfoil section winglet Eppler 220 yaw would eliminated says paper anyway airfoil winglet would shaped upper camber airfoil would inward sides winglets So have Sailplane plans can built over weekend compact enough can sneak out house under tall brothers flight jacket new RC frequencies means planes air same time flying wing could just advantage look up gaggle 20or soother types Spoiler installation Although shown foam wing installation system could used type wing construction Actuation via torque rod tube smaller crew fastens short sleeve onto torque rod longer screw drivesactually pushesthe spoiler up spoiler aluminum has two pieces tin can material epoxied Small magnets buried wing hold spoiler down via tin can material its closed position Hinging done simply Scotch tape MonoKote Positive actuation up position Airflow over wing closes spoilers Just simpleif simplestof systems setup whole drive system can made removable just pass See Toledo Dan Pruss 131 E Pennington Ln Plainfield IL 60544 RC Old-Timers/Mathews Continued oaoe 51 natural hinge lines rudder elevator would fine 1A-chord balance point would good starting place Goettingen 527 airfoil something ex cess originals A-to-/s horsepower power plant would nice chose present Dragon Fly example low-wing designs could highly competitive 50% flight-time bonus frankly have never seen example Dragon Fly flight find puzzling So wholl first order plan No 2G3 John Pond PO Box 3215 San Jose CA 95156 send photo low wings Paul Forrete Ben Loma CA has winning /2A Texaco rather regularly Peerless Panther thereby proving old wives tales about nasty habits low wings un founded hard work slightlyreduced Sadler Pacemaker Id bet betting kind too will change some preconceived notions published enlarged Panther De cember 1979 Model Aviation Still available MA Full-Size Plan No 283 $5 Panther II SAM-legal due changes nose configuration airfoil section has proven popular sport fliers around world am pres ently designing another Panther around 40 four-stroke anticipate too will jewel Comets Golden Eagle seldom-seen design its three options wing location kit would build see photo ad April 1938 Model Airplane News three versions high- mid- low-wing shown John Pond plan No 7C3 45-in-span design would present some challenges construc tion RC installation would cer tainly something get out Playboy rut Bill Atwoods Starliner still another seldom-seen designyet lots charm potential old ad May 1939 MAN proves point verted Hi-Speed engine Starliner cap tured first place Low-Wing event placed sixth against nearly 400 other models 20-sec-motor-run event fly ing two minutes 53 sec big March 5 meet atPomona CA goes say same sensational model Continued page 1S4 May1984 151
Edition: Model Aviation - 1984/05
Page Numbers: 48, 49, 150, 151
Radio Control SOARING Dan Pruss BACK kid could take latest rubber-powered pride joy grocery store have butcher weigh him seemed market street corner butcher acted like family Walking supennarket today 12-ft Sailplane might get far soup pickles aisle did manage get far counter precut pre weighed prepackaged meats con tact butcher would probably through intercom plate glass wall Forget about scale thats OK because David Munson Saint Louis MO has come up gad get calls Weight Stick Its simply length aluminum bar calibrated middle outward pounds ounces use Weight Stick has suspend whatever weighed string end Stick placing Stick table surface has sharp edge have move Stick until teeters tables edge direct reading can made right printed scale scale ranges fraction ounce 10 lb Being solid aluminum measuring inch inch cross section bar straight rigid would also serve well alignment tool spars lead ing trailing edges gadget priced $1395 should hobby shops time read can also order direct Weight/Stick Co PO Box 29952 St Louis MO 63129 Add $200 postage handling Challenge month Heres following specifications should en able sketch model out sketch should able draw few reference lines begin construction However assumed club has reference various airfoil sections profiles three Eppier airfoilslike ones used Curt Wellers flying wing 48 Model Aviation Cull Weller Austrli shows flying wing Above Want build dont need plansread directions column have finished time would take make wing conventional design trickiest part RC installation Below isnt visible transmittar does feature control mixer youll have plane since uses elevons combined ailerons/elevators Model uses plywood keel secure receiver batteries tubes wing-alignment pins design has flown over 200 timesmuch competition Curt has done nicely model presented part 1SF Seminar held near Zurich Switzerland last December specs flying wing shown photos column what its worth de sign approach construction straightforward simple flying wing scribe has ever seen Curt Weller Schubertgasse Austria de signed model has successfully logged over 200 flights bad model especially flying wings thermals best has performed very well Speed Dis tance types tasks specifica tions Wingspan 2600mm Leading Edge Sweep 20Centerline Chord 350mm Centerline Airfoil Eppler 180 Wing tip Chord 220mm Wing tip Airfoil Eppler 184 degree negative incidence El evons 450mm length tip fins winglets 250mm high join two-thirds wing tip wings trailing edge forward see photo Theres modest taper winglets side profile designer claims isnt crit ical winglets also basically flat plates Center Gravity 18% MAC Suggestions start 15% move back 18% range dont exceed 20% Towhook position 75% back wing centerline construction Curt used foam cores Continued page 150 David Munsons Weight/Stick L now market has no moving parts based principle old Archemedes Its calibrated/graduated aluminum bar will weigh anything can hang its cordand can read graduations fractions ounce 10 lb spoiler Installation R ultimate simplicity no cables no horns no linkages get stuck out adjustment Actuation via torque rod removable Magnets hold closed Air pressure closes details column Perma-Grit TM Lifetime * Carbide Sanding Tools Tungsten Carbide grit hardest material next diamond * Outlasts sandpaper 100s times * Tools will load up * Grit cant tear loose * Makes fitting blending fairing pleasure * Fairs IE TE foam undercutting * Rapid stock Removal batter control * Saves time money aggravation * Replaces plane knite rasp ing blocks excellent tools modeler can use Don Lowe Professional Engineer Ask Dealer send check M 0 No CODs DG Products 209 Carrlands Dr Dayton OH 45429 513 294-1192 Tungsten carbide grit brazed steel 9 long tool use balsa hardwoods fiberglass beaded foams epoxy fillers plexiglas Made US Average Modelers Use 1100Flat Coarse/Fine$695 F101 Fiat Fine$695 F102Fiat Coarse$695 1200 us Coarse/Fine$695 1201 1 /8 Tangent Coarse/Fine$695 1202 d Coarse/Fine$625 R203A Reund Coarse/fine$495 R204 d Coarse/Fine$495 Postage Paid Ohio residents add 11% tax TOLEDO/84THIRTIETH ANNUAL RIO EXPOSITION Reserve April 6 7 81984enter competition excit-TOLEDO SPORTS ARENA attend worlds greatesting awards CompetitionONE MAIN STREET radio control model show Wemodels will accepted duringTOLEDO OHIO featuring world sshow hours till 10 am Sunday largest Swap Shops nomorning no entry fee APRIL 6 7& 8 dealers complete refreshmentComplete nc systems will Saturday Nightpresented first second andFRIDAY9am 6pm centersSATURDAY 9am Auction raffles complete ncSUNDAY9am m systems accessories acres free parking Bring latest completely ~nished models display third place winners new Microwave Oven will award ed lucky winner Best Show Open public three great days Weak Signals RIO Club PO Box 5772 Toledo Ohio 43613 May 1984 49 EU UAU~ hinge allows control uuvIz surface removal tools lost pins problems PATENT painting XPENDINGcoveringrepair transportation storage etc Rotate Insert o 90 RC Helicopters/Jolly Continued naoe 146 range attempting fly rotor out range can cause over-revving lugging system depending whether using too much positive negative pitch wrong throttle setting Following rest manual should see Superior assembled problems Next month will cover final set-up flying Superior Until next month flying new Helicopter radios fitted invert-flight switch careful incident fellow club flier using systems hovering reached up flip aileron dual-rate got invert switch instead broken machine boot using invert switch check see can de activate switch control board transmitter good idea Ed Baxter drop appropriate-size wheel collar over offending switch lock place Keep cards letters coming well photos questions BCNU Lary Jolly 5501 W Como Santa Ana CA 92703 RC Soaring/Pruss Continued naqe 49 Wing joiners using steel rods join two wing halves through center keel-like ply wood piece plywood also cradles receiver batteries other photo pretty well explains same photo also shows two fiberglass tubes aid aligning supporting wing rods note caution due youre going cut foam cores After have determined approximate size foam blocks cut both short ends block angle 200 effect will give wing 2O sweep Remember swept-back wing true airfoil must parallel chord line other words can t take rectangular block attach rib templates two ends make cuts cut off 200 sweep expect resulting airfoil section intended have Curt used basic foam/balsa construc tion technique has become quite stan dard type wing-building Wing rod supports spars leading edge part wing Foam removed center section after wing completed radio gear could accommodated intend build up wing using standard built-up methods use old way stacking sheets balsa 3 SIZES 146 3 8-6 126 495 approximate wing ribs size shaping stack between root rib tip rib pretty good way go especially wing case transitions Eppler 180 Eppler 184 Simply have root rib tip rib accurately cut suitable template mate rial such aluminum Formica plywood before stacking lumber between just carve sand away airfoil changes between two templates just fall place laying out wing use favorite wing construction dont forget degree washout Dihedral zero degrees Only two servos needed Nice ever since control surfaces elevonsthat combining functions elevators aileronsyou need mixing capabilities either transmitter airborne system model shown winglets plugged theres tape holding picture formed fit ting extends full wing tip chord length just adds little strength fin tip juncture As flying 200 flights says something design Austria tasks similar F3B flown regular com petition Flying wings frequently have inherent weak point designtheir pitch instability low- high-speed ranges Mr Weller claims design doesnt show tendencies Paul Clements Presents BEAUTIFUL S4A&6 AWARD-WINNING COMPETITOR AMA & PAl PATTERN DESIGN e Designed Manufactured See dealer distributor available send check money order VISA MasterCard plus $700 UPS shipping Paul Clements ITT UWI MODELI AR 2 Paofl lAd 47454 Phone 812J 7233601 WING SPAN ING AREA sq in Basic Kit $9895 MOTOR u in Deluse Kit $14995 WEIGHTB 9 lbs BASIC KIT INCLUDES Fiberglans toselage bulkhead instelled molded fin foam wing ntab cores L6 blocks wires nnnegearwire4tiberglassfapeplans instractions DELUXE KIT INCLUDES abnoe plot balsa hardwood tiberglass wing tips hinges tibergiass pooh rods aileron linkage nnap links LG stropsand screws wing bolts control horns nose gear steering arm Bro throOle linkage Pm-Built Price Magic DragonEngine 25 cu Wing Span 55 Trainer Radio 3 4 Channels balsa ceestrecilee Ready te flea sand mud Sever Ceatrel s hinged ItalIc laming gear 5/32 anne gear strut Fitted campy leetrectlss heckles mad hardweee hudaded Pre-Built Price $12495 Engine 40 Cu Fire Fox Wing Span 52/s Radio 4 Channels heiea ceastmectlea Ready te fise sand Sever Central ear faces hiaged Has heN. wing Hake landing gear AK wheel part moentad seals leatailed Fitted camepy lestractlea heakiet ned hardware hudaded 6 Other ModelsSend Free Brochure 990 16th StreetSead checker M0 Palm HarborCredit Card ecceptad ROAdd $550 LIPS FL 33563shipping 350 PSI erIe DEALER INQUIRIES INWTED 2 ECH RC tB13t78S8560FLree add 5% tel 150 Model Aviation Scale Appearance Simple Assembly No Slots No Pins EBERLES IS YOUR HEADQUARTERS FOR HEIJCOPTERS EBLE& COUPtETE LOGE OF HEUCOPTERS PARTS & ACCESSORIES um o COMPETITOR PRO Fully aerobatic collective pitch plus new added bearings PRO model with ENYA 60X 5 OS6IFSR. 44995 ENYA chrome hell46995 OS 6IFSRH hell46995 O ANUOa4OING TN AVAILAUUTV 0 KALF HWJCOflUS__ BARON 20-collctive pitch 5 BARON 50A MARK ill auto rotation collective pitch .. 29995 BARON SOC custom olective pitch36795 BARON 50 custom BlmckheadMK II46195 o CUSTOM Hal-BOY collective pitch automatic tail rotor compensation & aerobic kit ENYA 60X34995 OS 61FSR35995 ENVA chrome hell37995 OS 61FSRH hell. 95 o SUPER MINIBOY collective pitch autorotation tail ro tor compensatio& aerobic kit ENYA 4OCX28495 ENVA 4SCX29495 OS 4OFSR28995 OS 4SFSR29995 o HEUCOPTER &ENGR*COMBO ENYA6OX OS61FSR HP6I Gold Cup ENVA 60X hell OS 61F8flhell Some engines Endt*&s4pIy please order soon Cal Sot pelces O RADIOS Airtronics Fat*o JR &Kraft AJRTRONICS 6 channel hell standard25496 JR Century seven 4501 seivos25495 PWI Seal Range ci AC NalICOPIiI Send $2 complete catalg Z ORDERING INFORMATION ALL ORDERS SHIPPED DAILY UPS 0425 add 350 $264100add40$101-overadd600 BLUE LABEL- held 30 days Pennsylvania Residents add 6% sales tax add 10% merchandise total COD charge $165 Payment Ebedes simply take order will endeavor answer COD orders cash money order certified check fast service please question may have will assist recommending ri9bt helicopter send certified check money-orderer use credit card Personal checks will particular needs along prompt service equals troublefree lying l Helicopters & Fly Wel Co-Pilot Everytime Fly ICI$ 412586-97669-9 PM 586-7768TO cgjcr 672 PI1TSBURGH RD BUTLER PA 16001E waddle oscillation about verti cal axis sometimes does occur certain high speeds suggestion alleviate tendency came Helmut Wehren feels winglets 20% shorter height chord extended match chord length wing tip airfoil section winglet Eppler 220 yaw would eliminated says paper anyway airfoil winglet would shaped upper camber airfoil would inward sides winglets So have Sailplane plans can built over weekend compact enough can sneak out house under tall brothers flight jacket new RC frequencies means planes air same time flying wing could just advantage look up gaggle 20or soother types Spoiler installation Although shown foam wing installation system could used type wing construction Actuation via torque rod tube smaller crew fastens short sleeve onto torque rod longer screw drivesactually pushesthe spoiler up spoiler aluminum has two pieces tin can material epoxied Small magnets buried wing hold spoiler down via tin can material its closed position Hinging done simply Scotch tape MonoKote Positive actuation up position Airflow over wing closes spoilers Just simpleif simplestof systems setup whole drive system can made removable just pass See Toledo Dan Pruss 131 E Pennington Ln Plainfield IL 60544 RC Old-Timers/Mathews Continued oaoe 51 natural hinge lines rudder elevator would fine 1A-chord balance point would good starting place Goettingen 527 airfoil something ex cess originals A-to-/s horsepower power plant would nice chose present Dragon Fly example low-wing designs could highly competitive 50% flight-time bonus frankly have never seen example Dragon Fly flight find puzzling So wholl first order plan No 2G3 John Pond PO Box 3215 San Jose CA 95156 send photo low wings Paul Forrete Ben Loma CA has winning /2A Texaco rather regularly Peerless Panther thereby proving old wives tales about nasty habits low wings un founded hard work slightlyreduced Sadler Pacemaker Id bet betting kind too will change some preconceived notions published enlarged Panther De cember 1979 Model Aviation Still available MA Full-Size Plan No 283 $5 Panther II SAM-legal due changes nose configuration airfoil section has proven popular sport fliers around world am pres ently designing another Panther around 40 four-stroke anticipate too will jewel Comets Golden Eagle seldom-seen design its three options wing location kit would build see photo ad April 1938 Model Airplane News three versions high- mid- low-wing shown John Pond plan No 7C3 45-in-span design would present some challenges construc tion RC installation would cer tainly something get out Playboy rut Bill Atwoods Starliner still another seldom-seen designyet lots charm potential old ad May 1939 MAN proves point verted Hi-Speed engine Starliner cap tured first place Low-Wing event placed sixth against nearly 400 other models 20-sec-motor-run event fly ing two minutes 53 sec big March 5 meet atPomona CA goes say same sensational model Continued page 1S4 May1984 151