RADIO CONTROL SOARING ors note pleased welcome Mike Garton aboard full-time RC Soaring columnist Mikes initial column generated quite bit favorable response readers Mike will cover Slope Thermal Soaring combined Ibrinat rather separate columns run past Please give him plenty support lie reports full spectrum RC Soaring Thanks choosing new Snaring columnist said careful what wish just might get will best publish variety Thermal Slope Soaring topics Please send interesting Soaring pictures caption information scratch-build send some photos explain what makes airplane unique Mike Fox placed first Hand-Launched Glider 1998 Nationals long ago visiting Davenport Iowa opportunity see Mike test-fly latest Hand-Launched Glider calls new scratch-built creation Focus Focus weighs 8 ounces rudder elevator flaperon controls has triple-taper composite vacuum-bagged wing Mike used blue foam inner panels lighter gray foam tips airfoil 5A7035 thinned 7% thickness V-tail also vacuum-bagged fiberglass over blue foam Mike scratch-built moIdedcarbonandKevlarTM fuselage pod used tapered carbon tailboom the Wind Contents Rotary Driver System package Two complete couplers servo spline adaptors Allen wrench kite store tailboom length generous extreme Logic Focus looks similar Brian Buasss Feather design know Mike designed model before Feather design publicized case two great designers independently went similar design direction flight-testing Focus went well windy day model no trouble penetrating Mike thermaled up near limits visibility several times sink rate very low Focus certainly will contender year Harley Michaelis has announced Rotary Driver System RDS commercially available know Soaring press will covering product see Modelers Mall August issue will spend little time description time practical implementation tips Web sites detailed descriptions RDS listed end column Harley invented RDS linkage system has using homebrew version formerly called RADS years RDS uses torque rod transfer rotary servo movement control surface movement special coupler connects torque rod top servo output gear coupler now available commercially comes adapters fit splines Airtronics Hitec Futaba servos Other servo types can accommodated following supplied instructions FORMICA CONTROL POCKETSURFACE Diagram typical Rotary Driver System RDS installation 110 Model Aviation Fox Davenport IA new Focus hand-launch glider model weighs 8 ounces Photo author Detail pylon area Mikes scratch-built Focus Hatch provides battery access Photo author V SERVO /TORQUE ROn COUPLER HEARING TUBE other end torque tube pocket made FormicaTM countertop samples embedded control surface just aft hinge line see diagram pocket must made fit particular control surface secret linkage bend torque tube just before enters pocket Rotations torque rod cause bent part rod rotate up down torque rod also slips slightly fore aft pocket during rotation primary advantage RDS drag reduction windtunnel study conducted Dr Werner Wurz Switzerland measured drag external flap aileron linkages Dr Wurz concluded four external linkages create about 10% total drag typical glider roughly equivalent drag horizontal tail secondary advantage RDS linkages cant snag anything Wings equipped RDS slide easily foam-core beds wing bags end Stacking wings also works because no external linkage scratch adjoining wings first saw RDS years ago pessimistic about radical linkages concerns about difficulty installation slop forces servo maintainability Later bought used Genie sailplane direct Harley already RDS installed ailerons slopfree trouble-free installed RDS next full-house glider flew last summer will share things learned Installation easy first RDS took afternoon put because unsure what might critical installed three systems about two hours total Most dimensions noncritical doubtful build mock-up first first installation presheeted obechi wing used Dremel router cut through skin obechi control surface FormicaTM pocket much easier trying fit Learn paint like pros Fast easy way make stitches Simple method finishing tapes use simple system 4Order over internet secure site Paint over fiberglass fabric $1995 US Plus Shipping & handling F&M Enterprises Auburn Dale Drive El Toro California USA 92630-5006 Web address http I/www stits com Phone fax 949-583-1455 E1ib~iII Glow Plugs Introduces NEW SUPER COOL Plug Hi Temp Insulator oniy $229 addition FIREBALL RC IDLE BAR plug $229 Hot & Standard Non-Idle Bar plugs still $195 Swanson Associates PO Box 151 Wayne NJ 07470MIL TheD DIntroductory pnce44 New 29 span 270 1T1 sq wing quick build Bee busy 1st time builders ARF guys can quickly build Fly fast slow set up mild & forgiving wild & snappy plane light enough indoor systems strong enough speed 400 Weighs 14 oz speed 400 8-500 mab cells - uses 01 10 glow power weighs 9 10 oz Cox 049 can fly R/C C02 GM 300 could also flown ass glider recommended trying teach themselves fly As RIC glider weighs 6 7 oz will survive crashes kit very complete wood high quality parts dont need knife build No hardware needed include user feiendly iron-onclearmylarcovering Introductory price $44 including shipping Trexler balloon wheels & tire pump $10 extra accept credit card & COD orders Tel 480-649 1534 Fax 480-649 9040 Web site wwwclancyaviationcom Hours Mon thru Fri 10AM -4PM MST September 1999 111 Exploded view RDS coupler Hitec HS85MG servo scale servo types can used RDS photos Scott Bottorf Authors trick making perfect RDS FormicaTM pockets Rods serve temporary spacers Process takes about 30 minutes I__Ill JIl1 L1iM [] ques Military Civilian Helicopters Sailpianes have worlds kirgest aircraft documentation collection 7400 different full color photo studies 1903-1998 35000 3-view line drawings 1999 Catalog/Guide 228 pages .LCanada Mexca $1000 tuope$1500 Bob BankaeAso ca & Aus alia $1800 AIRCRAFT DOCUMENTATION 3114 Yukon Avenue a Mesa CA 92626 714 979-8058 httg//wwwimtnet/ims/scalehtml TRU-TURN now offers very finest versatile light-weight PROP HUBS turned solid barstock inside out true running hub new hub will mount motor standard TRU-TURN adapter kit big bird multi-bolt applications TRU-TURN has covered TRU-TURN also has PROP NUT will fit motor precision PROP NUTS come engine thread sizes two different shapes available stock Ask hobby dealer name El Made n U 5 PRECISION MODEL PRODUCTS ey Romco Manufacturing Inc QUALITY VERSATILITY GREAT LOOKS TY PO Box 836 South Houston Texas 77587 713 / 943-1867 Visit us Internet ru-turnnet pocket under obechi fibergtassed over area restore strength Some marketing literature RDS claims slop-free system Genie bought Harley slop-free first created wasnt quite way As linkage presence tack stop depends imptementation controtling factor toterances inside dimension FormicaTf pocket pocket fits loosety witi have slop takes skitl iteration get spacers pockets flat right thickness tendency end up nonparallel surfaces after sanding can test fit before instatlation remake pocket until satisfied dislike procedures require skill developed simple direct method make slopfree pockets Ideally inside dimensions FormicaTM pocket will couple thousandths inch larger torque rod accomplish cut least three lengths rod wax lay bottom FormicaTM piece see photo rods act temporary spacers Make plywood spacers slightly thinner rod diameter Exact height level surfaces spacers critical process CyA cyanoacrylate glue spacers bottom piece FormicaTt Mix up epoxy thickened microballoons put some top spacers Put top FormicaTM piece Place FormicaiM sandwich rigid flat surface stack flat piece thick hardwood heavy weight sandwich weight forces excess epoxy out until top FormicaTNf piece resting pieces rod After structure dries pull out rods resulting spacer/epoxy combination exactly thickness rods typical FormicaiM samples lumber stores large enough make two pockets make two pockets step handsaw apart Total pocket creation time less 30 minutes four Result slop-free time concern about strain servo unfounded effective moment arm control surface usually perpendicular distance pushrod hinge line moment arm determines much aerodynamic force servo will feel first glance might guess effective moment arm RDS about /8 inch certainly would gear-down force arrangement result huge aerodynamic forces servo actual effective moment arm RDS complicated determine depends tolerances stiffness elements installed system cases will 112 Model Aviation ance between free tip bent torque rod hinge line typical RDS installation Three Meter glider about 3/4 inch aerodynamic force transferred control surface servo similar standard external linkage 3¼-inch control horn can scale RDS up down large small airplanes Just remember compare estimate effective moment arm properly-sized external control horn Flutter no likely other linkage During year flying tested maintainability RDS RDS test installation included flaps 900 down travel Most time remembered raise flaps just before touchdown glider lands its flaps something must give FormicaiM pockets pretty strong use plastic-geared servos will strip gears used metal-geared servos joint between torque rod servo coupler broke easily removed servo fixed problem got back action new RDS couplers different coupler will still point failure linkage overloaded setscrew will slip will circumferentially gouge torque rod replacement process will easy commercial version RDS setscrew will allow easy removal reinstallation coupler servos accessible type maintenance possible between contest rounds ces Tapered carbon tailbooms Wind kite store Boulder CO 800 204-5483 http//wwwintothewindcom Logic HLG Northeast Sailplane Products 16 Kirby Ln Williston VT 05495 802 658-9482 http//wwwnesailcom Feather HLG Raptor Aerosports 9710 Zelzah Ave #108 Northridge CA 91325 818 993-0570 http//wwwraptorrccom RDS Distributed through Great Planes Horizon hobby stores Ask about local hobby store Detailed RDS information http//wwwhollydaycom/rads/radshtm http//bminetlproptlrds Drag external linkages study http//headecleabsdlrde/Airfoils/linkagehtm Only fl US Hobby Line Model Airplanes Helicopters Boats Cars SE $AiE 6555WehL AenroB FIRE FEVARP 1010 SC GWW IOTOE DARE AFTER SUNSET OEEE Woo Soo 40 LenOYr TOT S/CrAY 5265-24 lOS tRW #945 56 JAGUAR 4OARP IrenoOYYB DEALERS ARID DISTRIBUTORS INOUIAIES WELCOME flBfliflIflM 14002494544 a1-2014604544 WE ACCEPOn ViSA MASYCA CHAD & DIOCOUIIR CARDS 151CM SUBJECT TO CHANGE WITHOUT NOTICE STORE HOURS MONDAY TIERO THURSDAY 10-AM TO TPM FYISAY SAM TO 9PM SATURDAYS lSEM TO 4PM PACITAUSRA AND SHIPPINS RYE SOUS NEW JERSEY OSSISYNTS ASS SPA SALES TAO US HOBBY INC 100 #400NACNIE AVE MOONACHIE NJ 07074 EEE WOO Opa U10 LerrUth TS/ 53W WORYI 33 lEen0U2 SHO US HOBBY INC 17th Annual GREATER SOUTHWEST September 17-19 just South D/FW Awards Pruzesand Raffle RAM 750 AMAJPO ApprovedAMA rules apply Turbine pilots Wavier inline manual fuel shutoff req CDSolomonTET 5 AllenDFoS s E-mailallenrcl@junocomFt 972-263-5913 David Hudsonit 2Ei67 MU cipal OTT 972-264-7574dIothiao Call forNiacjsi detailsI\J671ETrooce W x 5 Onsite$25 00 Pre-reg$2000 Hosted GPMAA September1999 113 Have suggestion about magazine Let us know Model Aviation Suggestion Line Tel 765 288-4899 extension 223 COO P00 AT ED WORLDS LARGEST MANUFACTURER OF SUPERIOR EPOXY-GLASS COWLS WHEEL PANTS SSORIES CALL NOW 810 677-0213 810 677-0414 tordero onlyl [] Send $100 Open $200 inMonday Friday $300 outside USA 10 am 4 pm EST PIPER CUB E-3/ARP 40 SR/LOS/I ALL WUSO 05551 0EEE WrRg OWn AT Length 43 VUeLoEnt 70 AS IEerrEOAJ 1 FAN FLY Al RPORT 45
Edition: Model Aviation - 1999/09
Page Numbers: 110, 111, 112, 113
RADIO CONTROL SOARING ors note pleased welcome Mike Garton aboard full-time RC Soaring columnist Mikes initial column generated quite bit favorable response readers Mike will cover Slope Thermal Soaring combined Ibrinat rather separate columns run past Please give him plenty support lie reports full spectrum RC Soaring Thanks choosing new Snaring columnist said careful what wish just might get will best publish variety Thermal Slope Soaring topics Please send interesting Soaring pictures caption information scratch-build send some photos explain what makes airplane unique Mike Fox placed first Hand-Launched Glider 1998 Nationals long ago visiting Davenport Iowa opportunity see Mike test-fly latest Hand-Launched Glider calls new scratch-built creation Focus Focus weighs 8 ounces rudder elevator flaperon controls has triple-taper composite vacuum-bagged wing Mike used blue foam inner panels lighter gray foam tips airfoil 5A7035 thinned 7% thickness V-tail also vacuum-bagged fiberglass over blue foam Mike scratch-built moIdedcarbonandKevlarTM fuselage pod used tapered carbon tailboom the Wind Contents Rotary Driver System package Two complete couplers servo spline adaptors Allen wrench kite store tailboom length generous extreme Logic Focus looks similar Brian Buasss Feather design know Mike designed model before Feather design publicized case two great designers independently went similar design direction flight-testing Focus went well windy day model no trouble penetrating Mike thermaled up near limits visibility several times sink rate very low Focus certainly will contender year Harley Michaelis has announced Rotary Driver System RDS commercially available know Soaring press will covering product see Modelers Mall August issue will spend little time description time practical implementation tips Web sites detailed descriptions RDS listed end column Harley invented RDS linkage system has using homebrew version formerly called RADS years RDS uses torque rod transfer rotary servo movement control surface movement special coupler connects torque rod top servo output gear coupler now available commercially comes adapters fit splines Airtronics Hitec Futaba servos Other servo types can accommodated following supplied instructions FORMICA CONTROL POCKETSURFACE Diagram typical Rotary Driver System RDS installation 110 Model Aviation Fox Davenport IA new Focus hand-launch glider model weighs 8 ounces Photo author Detail pylon area Mikes scratch-built Focus Hatch provides battery access Photo author V SERVO /TORQUE ROn COUPLER HEARING TUBE other end torque tube pocket made FormicaTM countertop samples embedded control surface just aft hinge line see diagram pocket must made fit particular control surface secret linkage bend torque tube just before enters pocket Rotations torque rod cause bent part rod rotate up down torque rod also slips slightly fore aft pocket during rotation primary advantage RDS drag reduction windtunnel study conducted Dr Werner Wurz Switzerland measured drag external flap aileron linkages Dr Wurz concluded four external linkages create about 10% total drag typical glider roughly equivalent drag horizontal tail secondary advantage RDS linkages cant snag anything Wings equipped RDS slide easily foam-core beds wing bags end Stacking wings also works because no external linkage scratch adjoining wings first saw RDS years ago pessimistic about radical linkages concerns about difficulty installation slop forces servo maintainability Later bought used Genie sailplane direct Harley already RDS installed ailerons slopfree trouble-free installed RDS next full-house glider flew last summer will share things learned Installation easy first RDS took afternoon put because unsure what might critical installed three systems about two hours total Most dimensions noncritical doubtful build mock-up first first installation presheeted obechi wing used Dremel router cut through skin obechi control surface FormicaTM pocket much easier trying fit Learn paint like pros Fast easy way make stitches Simple method finishing tapes use simple system 4Order over internet secure site Paint over fiberglass fabric $1995 US Plus Shipping & handling F&M Enterprises Auburn Dale Drive El Toro California USA 92630-5006 Web address http I/www stits com Phone fax 949-583-1455 E1ib~iII Glow Plugs Introduces NEW SUPER COOL Plug Hi Temp Insulator oniy $229 addition FIREBALL RC IDLE BAR plug $229 Hot & Standard Non-Idle Bar plugs still $195 Swanson Associates PO Box 151 Wayne NJ 07470MIL TheD DIntroductory pnce44 New 29 span 270 1T1 sq wing quick build Bee busy 1st time builders ARF guys can quickly build Fly fast slow set up mild & forgiving wild & snappy plane light enough indoor systems strong enough speed 400 Weighs 14 oz speed 400 8-500 mab cells - uses 01 10 glow power weighs 9 10 oz Cox 049 can fly R/C C02 GM 300 could also flown ass glider recommended trying teach themselves fly As RIC glider weighs 6 7 oz will survive crashes kit very complete wood high quality parts dont need knife build No hardware needed include user feiendly iron-onclearmylarcovering Introductory price $44 including shipping Trexler balloon wheels & tire pump $10 extra accept credit card & COD orders Tel 480-649 1534 Fax 480-649 9040 Web site wwwclancyaviationcom Hours Mon thru Fri 10AM -4PM MST September 1999 111 Exploded view RDS coupler Hitec HS85MG servo scale servo types can used RDS photos Scott Bottorf Authors trick making perfect RDS FormicaTM pockets Rods serve temporary spacers Process takes about 30 minutes I__Ill JIl1 L1iM [] ques Military Civilian Helicopters Sailpianes have worlds kirgest aircraft documentation collection 7400 different full color photo studies 1903-1998 35000 3-view line drawings 1999 Catalog/Guide 228 pages .LCanada Mexca $1000 tuope$1500 Bob BankaeAso ca & Aus alia $1800 AIRCRAFT DOCUMENTATION 3114 Yukon Avenue a Mesa CA 92626 714 979-8058 httg//wwwimtnet/ims/scalehtml TRU-TURN now offers very finest versatile light-weight PROP HUBS turned solid barstock inside out true running hub new hub will mount motor standard TRU-TURN adapter kit big bird multi-bolt applications TRU-TURN has covered TRU-TURN also has PROP NUT will fit motor precision PROP NUTS come engine thread sizes two different shapes available stock Ask hobby dealer name El Made n U 5 PRECISION MODEL PRODUCTS ey Romco Manufacturing Inc QUALITY VERSATILITY GREAT LOOKS TY PO Box 836 South Houston Texas 77587 713 / 943-1867 Visit us Internet ru-turnnet pocket under obechi fibergtassed over area restore strength Some marketing literature RDS claims slop-free system Genie bought Harley slop-free first created wasnt quite way As linkage presence tack stop depends imptementation controtling factor toterances inside dimension FormicaTf pocket pocket fits loosety witi have slop takes skitl iteration get spacers pockets flat right thickness tendency end up nonparallel surfaces after sanding can test fit before instatlation remake pocket until satisfied dislike procedures require skill developed simple direct method make slopfree pockets Ideally inside dimensions FormicaTM pocket will couple thousandths inch larger torque rod accomplish cut least three lengths rod wax lay bottom FormicaTM piece see photo rods act temporary spacers Make plywood spacers slightly thinner rod diameter Exact height level surfaces spacers critical process CyA cyanoacrylate glue spacers bottom piece FormicaTt Mix up epoxy thickened microballoons put some top spacers Put top FormicaTM piece Place FormicaiM sandwich rigid flat surface stack flat piece thick hardwood heavy weight sandwich weight forces excess epoxy out until top FormicaTNf piece resting pieces rod After structure dries pull out rods resulting spacer/epoxy combination exactly thickness rods typical FormicaiM samples lumber stores large enough make two pockets make two pockets step handsaw apart Total pocket creation time less 30 minutes four Result slop-free time concern about strain servo unfounded effective moment arm control surface usually perpendicular distance pushrod hinge line moment arm determines much aerodynamic force servo will feel first glance might guess effective moment arm RDS about /8 inch certainly would gear-down force arrangement result huge aerodynamic forces servo actual effective moment arm RDS complicated determine depends tolerances stiffness elements installed system cases will 112 Model Aviation ance between free tip bent torque rod hinge line typical RDS installation Three Meter glider about 3/4 inch aerodynamic force transferred control surface servo similar standard external linkage 3¼-inch control horn can scale RDS up down large small airplanes Just remember compare estimate effective moment arm properly-sized external control horn Flutter no likely other linkage During year flying tested maintainability RDS RDS test installation included flaps 900 down travel Most time remembered raise flaps just before touchdown glider lands its flaps something must give FormicaiM pockets pretty strong use plastic-geared servos will strip gears used metal-geared servos joint between torque rod servo coupler broke easily removed servo fixed problem got back action new RDS couplers different coupler will still point failure linkage overloaded setscrew will slip will circumferentially gouge torque rod replacement process will easy commercial version RDS setscrew will allow easy removal reinstallation coupler servos accessible type maintenance possible between contest rounds ces Tapered carbon tailbooms Wind kite store Boulder CO 800 204-5483 http//wwwintothewindcom Logic HLG Northeast Sailplane Products 16 Kirby Ln Williston VT 05495 802 658-9482 http//wwwnesailcom Feather HLG Raptor Aerosports 9710 Zelzah Ave #108 Northridge CA 91325 818 993-0570 http//wwwraptorrccom RDS Distributed through Great Planes Horizon hobby stores Ask about local hobby store Detailed RDS information http//wwwhollydaycom/rads/radshtm http//bminetlproptlrds Drag external linkages study http//headecleabsdlrde/Airfoils/linkagehtm Only fl US Hobby Line Model Airplanes Helicopters Boats Cars SE $AiE 6555WehL AenroB FIRE FEVARP 1010 SC GWW IOTOE DARE AFTER SUNSET OEEE Woo Soo 40 LenOYr TOT S/CrAY 5265-24 lOS tRW #945 56 JAGUAR 4OARP IrenoOYYB DEALERS ARID DISTRIBUTORS INOUIAIES WELCOME flBfliflIflM 14002494544 a1-2014604544 WE ACCEPOn ViSA MASYCA CHAD & DIOCOUIIR CARDS 151CM SUBJECT TO CHANGE WITHOUT NOTICE STORE HOURS MONDAY TIERO THURSDAY 10-AM TO TPM FYISAY SAM TO 9PM SATURDAYS lSEM TO 4PM PACITAUSRA AND SHIPPINS RYE SOUS NEW JERSEY OSSISYNTS ASS SPA SALES TAO US HOBBY INC 100 #400NACNIE AVE MOONACHIE NJ 07074 EEE WOO Opa U10 LerrUth TS/ 53W WORYI 33 lEen0U2 SHO US HOBBY INC 17th Annual GREATER SOUTHWEST September 17-19 just South D/FW Awards Pruzesand Raffle RAM 750 AMAJPO ApprovedAMA rules apply Turbine pilots Wavier inline manual fuel shutoff req CDSolomonTET 5 AllenDFoS s E-mailallenrcl@junocomFt 972-263-5913 David Hudsonit 2Ei67 MU cipal OTT 972-264-7574dIothiao Call forNiacjsi detailsI\J671ETrooce W x 5 Onsite$25 00 Pre-reg$2000 Hosted GPMAA September1999 113 Have suggestion about magazine Let us know Model Aviation Suggestion Line Tel 765 288-4899 extension 223 COO P00 AT ED WORLDS LARGEST MANUFACTURER OF SUPERIOR EPOXY-GLASS COWLS WHEEL PANTS SSORIES CALL NOW 810 677-0213 810 677-0414 tordero onlyl [] Send $100 Open $200 inMonday Friday $300 outside USA 10 am 4 pm EST PIPER CUB E-3/ARP 40 SR/LOS/I ALL WUSO 05551 0EEE WrRg OWn AT Length 43 VUeLoEnt 70 AS IEerrEOAJ 1 FAN FLY Al RPORT 45
Edition: Model Aviation - 1999/09
Page Numbers: 110, 111, 112, 113
RADIO CONTROL SOARING ors note pleased welcome Mike Garton aboard full-time RC Soaring columnist Mikes initial column generated quite bit favorable response readers Mike will cover Slope Thermal Soaring combined Ibrinat rather separate columns run past Please give him plenty support lie reports full spectrum RC Soaring Thanks choosing new Snaring columnist said careful what wish just might get will best publish variety Thermal Slope Soaring topics Please send interesting Soaring pictures caption information scratch-build send some photos explain what makes airplane unique Mike Fox placed first Hand-Launched Glider 1998 Nationals long ago visiting Davenport Iowa opportunity see Mike test-fly latest Hand-Launched Glider calls new scratch-built creation Focus Focus weighs 8 ounces rudder elevator flaperon controls has triple-taper composite vacuum-bagged wing Mike used blue foam inner panels lighter gray foam tips airfoil 5A7035 thinned 7% thickness V-tail also vacuum-bagged fiberglass over blue foam Mike scratch-built moIdedcarbonandKevlarTM fuselage pod used tapered carbon tailboom the Wind Contents Rotary Driver System package Two complete couplers servo spline adaptors Allen wrench kite store tailboom length generous extreme Logic Focus looks similar Brian Buasss Feather design know Mike designed model before Feather design publicized case two great designers independently went similar design direction flight-testing Focus went well windy day model no trouble penetrating Mike thermaled up near limits visibility several times sink rate very low Focus certainly will contender year Harley Michaelis has announced Rotary Driver System RDS commercially available know Soaring press will covering product see Modelers Mall August issue will spend little time description time practical implementation tips Web sites detailed descriptions RDS listed end column Harley invented RDS linkage system has using homebrew version formerly called RADS years RDS uses torque rod transfer rotary servo movement control surface movement special coupler connects torque rod top servo output gear coupler now available commercially comes adapters fit splines Airtronics Hitec Futaba servos Other servo types can accommodated following supplied instructions FORMICA CONTROL POCKETSURFACE Diagram typical Rotary Driver System RDS installation 110 Model Aviation Fox Davenport IA new Focus hand-launch glider model weighs 8 ounces Photo author Detail pylon area Mikes scratch-built Focus Hatch provides battery access Photo author V SERVO /TORQUE ROn COUPLER HEARING TUBE other end torque tube pocket made FormicaTM countertop samples embedded control surface just aft hinge line see diagram pocket must made fit particular control surface secret linkage bend torque tube just before enters pocket Rotations torque rod cause bent part rod rotate up down torque rod also slips slightly fore aft pocket during rotation primary advantage RDS drag reduction windtunnel study conducted Dr Werner Wurz Switzerland measured drag external flap aileron linkages Dr Wurz concluded four external linkages create about 10% total drag typical glider roughly equivalent drag horizontal tail secondary advantage RDS linkages cant snag anything Wings equipped RDS slide easily foam-core beds wing bags end Stacking wings also works because no external linkage scratch adjoining wings first saw RDS years ago pessimistic about radical linkages concerns about difficulty installation slop forces servo maintainability Later bought used Genie sailplane direct Harley already RDS installed ailerons slopfree trouble-free installed RDS next full-house glider flew last summer will share things learned Installation easy first RDS took afternoon put because unsure what might critical installed three systems about two hours total Most dimensions noncritical doubtful build mock-up first first installation presheeted obechi wing used Dremel router cut through skin obechi control surface FormicaTM pocket much easier trying fit Learn paint like pros Fast easy way make stitches Simple method finishing tapes use simple system 4Order over internet secure site Paint over fiberglass fabric $1995 US Plus Shipping & handling F&M Enterprises Auburn Dale Drive El Toro California USA 92630-5006 Web address http I/www stits com Phone fax 949-583-1455 E1ib~iII Glow Plugs Introduces NEW SUPER COOL Plug Hi Temp Insulator oniy $229 addition FIREBALL RC IDLE BAR plug $229 Hot & Standard Non-Idle Bar plugs still $195 Swanson Associates PO Box 151 Wayne NJ 07470MIL TheD DIntroductory pnce44 New 29 span 270 1T1 sq wing quick build Bee busy 1st time builders ARF guys can quickly build Fly fast slow set up mild & forgiving wild & snappy plane light enough indoor systems strong enough speed 400 Weighs 14 oz speed 400 8-500 mab cells - uses 01 10 glow power weighs 9 10 oz Cox 049 can fly R/C C02 GM 300 could also flown ass glider recommended trying teach themselves fly As RIC glider weighs 6 7 oz will survive crashes kit very complete wood high quality parts dont need knife build No hardware needed include user feiendly iron-onclearmylarcovering Introductory price $44 including shipping Trexler balloon wheels & tire pump $10 extra accept credit card & COD orders Tel 480-649 1534 Fax 480-649 9040 Web site wwwclancyaviationcom Hours Mon thru Fri 10AM -4PM MST September 1999 111 Exploded view RDS coupler Hitec HS85MG servo scale servo types can used RDS photos Scott Bottorf Authors trick making perfect RDS FormicaTM pockets Rods serve temporary spacers Process takes about 30 minutes I__Ill JIl1 L1iM [] ques Military Civilian Helicopters Sailpianes have worlds kirgest aircraft documentation collection 7400 different full color photo studies 1903-1998 35000 3-view line drawings 1999 Catalog/Guide 228 pages .LCanada Mexca $1000 tuope$1500 Bob BankaeAso ca & Aus alia $1800 AIRCRAFT DOCUMENTATION 3114 Yukon Avenue a Mesa CA 92626 714 979-8058 httg//wwwimtnet/ims/scalehtml TRU-TURN now offers very finest versatile light-weight PROP HUBS turned solid barstock inside out true running hub new hub will mount motor standard TRU-TURN adapter kit big bird multi-bolt applications TRU-TURN has covered TRU-TURN also has PROP NUT will fit motor precision PROP NUTS come engine thread sizes two different shapes available stock Ask hobby dealer name El Made n U 5 PRECISION MODEL PRODUCTS ey Romco Manufacturing Inc QUALITY VERSATILITY GREAT LOOKS TY PO Box 836 South Houston Texas 77587 713 / 943-1867 Visit us Internet ru-turnnet pocket under obechi fibergtassed over area restore strength Some marketing literature RDS claims slop-free system Genie bought Harley slop-free first created wasnt quite way As linkage presence tack stop depends imptementation controtling factor toterances inside dimension FormicaTf pocket pocket fits loosety witi have slop takes skitl iteration get spacers pockets flat right thickness tendency end up nonparallel surfaces after sanding can test fit before instatlation remake pocket until satisfied dislike procedures require skill developed simple direct method make slopfree pockets Ideally inside dimensions FormicaTM pocket will couple thousandths inch larger torque rod accomplish cut least three lengths rod wax lay bottom FormicaTM piece see photo rods act temporary spacers Make plywood spacers slightly thinner rod diameter Exact height level surfaces spacers critical process CyA cyanoacrylate glue spacers bottom piece FormicaTt Mix up epoxy thickened microballoons put some top spacers Put top FormicaTM piece Place FormicaiM sandwich rigid flat surface stack flat piece thick hardwood heavy weight sandwich weight forces excess epoxy out until top FormicaTNf piece resting pieces rod After structure dries pull out rods resulting spacer/epoxy combination exactly thickness rods typical FormicaiM samples lumber stores large enough make two pockets make two pockets step handsaw apart Total pocket creation time less 30 minutes four Result slop-free time concern about strain servo unfounded effective moment arm control surface usually perpendicular distance pushrod hinge line moment arm determines much aerodynamic force servo will feel first glance might guess effective moment arm RDS about /8 inch certainly would gear-down force arrangement result huge aerodynamic forces servo actual effective moment arm RDS complicated determine depends tolerances stiffness elements installed system cases will 112 Model Aviation ance between free tip bent torque rod hinge line typical RDS installation Three Meter glider about 3/4 inch aerodynamic force transferred control surface servo similar standard external linkage 3¼-inch control horn can scale RDS up down large small airplanes Just remember compare estimate effective moment arm properly-sized external control horn Flutter no likely other linkage During year flying tested maintainability RDS RDS test installation included flaps 900 down travel Most time remembered raise flaps just before touchdown glider lands its flaps something must give FormicaiM pockets pretty strong use plastic-geared servos will strip gears used metal-geared servos joint between torque rod servo coupler broke easily removed servo fixed problem got back action new RDS couplers different coupler will still point failure linkage overloaded setscrew will slip will circumferentially gouge torque rod replacement process will easy commercial version RDS setscrew will allow easy removal reinstallation coupler servos accessible type maintenance possible between contest rounds ces Tapered carbon tailbooms Wind kite store Boulder CO 800 204-5483 http//wwwintothewindcom Logic HLG Northeast Sailplane Products 16 Kirby Ln Williston VT 05495 802 658-9482 http//wwwnesailcom Feather HLG Raptor Aerosports 9710 Zelzah Ave #108 Northridge CA 91325 818 993-0570 http//wwwraptorrccom RDS Distributed through Great Planes Horizon hobby stores Ask about local hobby store Detailed RDS information http//wwwhollydaycom/rads/radshtm http//bminetlproptlrds Drag external linkages study http//headecleabsdlrde/Airfoils/linkagehtm Only fl US Hobby Line Model Airplanes Helicopters Boats Cars SE $AiE 6555WehL AenroB FIRE FEVARP 1010 SC GWW IOTOE DARE AFTER SUNSET OEEE Woo Soo 40 LenOYr TOT S/CrAY 5265-24 lOS tRW #945 56 JAGUAR 4OARP IrenoOYYB DEALERS ARID DISTRIBUTORS INOUIAIES WELCOME flBfliflIflM 14002494544 a1-2014604544 WE ACCEPOn ViSA MASYCA CHAD & DIOCOUIIR CARDS 151CM SUBJECT TO CHANGE WITHOUT NOTICE STORE HOURS MONDAY TIERO THURSDAY 10-AM TO TPM FYISAY SAM TO 9PM SATURDAYS lSEM TO 4PM PACITAUSRA AND SHIPPINS RYE SOUS NEW JERSEY OSSISYNTS ASS SPA SALES TAO US HOBBY INC 100 #400NACNIE AVE MOONACHIE NJ 07074 EEE WOO Opa U10 LerrUth TS/ 53W WORYI 33 lEen0U2 SHO US HOBBY INC 17th Annual GREATER SOUTHWEST September 17-19 just South D/FW Awards Pruzesand Raffle RAM 750 AMAJPO ApprovedAMA rules apply Turbine pilots Wavier inline manual fuel shutoff req CDSolomonTET 5 AllenDFoS s E-mailallenrcl@junocomFt 972-263-5913 David Hudsonit 2Ei67 MU cipal OTT 972-264-7574dIothiao Call forNiacjsi detailsI\J671ETrooce W x 5 Onsite$25 00 Pre-reg$2000 Hosted GPMAA September1999 113 Have suggestion about magazine Let us know Model Aviation Suggestion Line Tel 765 288-4899 extension 223 COO P00 AT ED WORLDS LARGEST MANUFACTURER OF SUPERIOR EPOXY-GLASS COWLS WHEEL PANTS SSORIES CALL NOW 810 677-0213 810 677-0414 tordero onlyl [] Send $100 Open $200 inMonday Friday $300 outside USA 10 am 4 pm EST PIPER CUB E-3/ARP 40 SR/LOS/I ALL WUSO 05551 0EEE WrRg OWn AT Length 43 VUeLoEnt 70 AS IEerrEOAJ 1 FAN FLY Al RPORT 45
Edition: Model Aviation - 1999/09
Page Numbers: 110, 111, 112, 113
RADIO CONTROL SOARING ors note pleased welcome Mike Garton aboard full-time RC Soaring columnist Mikes initial column generated quite bit favorable response readers Mike will cover Slope Thermal Soaring combined Ibrinat rather separate columns run past Please give him plenty support lie reports full spectrum RC Soaring Thanks choosing new Snaring columnist said careful what wish just might get will best publish variety Thermal Slope Soaring topics Please send interesting Soaring pictures caption information scratch-build send some photos explain what makes airplane unique Mike Fox placed first Hand-Launched Glider 1998 Nationals long ago visiting Davenport Iowa opportunity see Mike test-fly latest Hand-Launched Glider calls new scratch-built creation Focus Focus weighs 8 ounces rudder elevator flaperon controls has triple-taper composite vacuum-bagged wing Mike used blue foam inner panels lighter gray foam tips airfoil 5A7035 thinned 7% thickness V-tail also vacuum-bagged fiberglass over blue foam Mike scratch-built moIdedcarbonandKevlarTM fuselage pod used tapered carbon tailboom the Wind Contents Rotary Driver System package Two complete couplers servo spline adaptors Allen wrench kite store tailboom length generous extreme Logic Focus looks similar Brian Buasss Feather design know Mike designed model before Feather design publicized case two great designers independently went similar design direction flight-testing Focus went well windy day model no trouble penetrating Mike thermaled up near limits visibility several times sink rate very low Focus certainly will contender year Harley Michaelis has announced Rotary Driver System RDS commercially available know Soaring press will covering product see Modelers Mall August issue will spend little time description time practical implementation tips Web sites detailed descriptions RDS listed end column Harley invented RDS linkage system has using homebrew version formerly called RADS years RDS uses torque rod transfer rotary servo movement control surface movement special coupler connects torque rod top servo output gear coupler now available commercially comes adapters fit splines Airtronics Hitec Futaba servos Other servo types can accommodated following supplied instructions FORMICA CONTROL POCKETSURFACE Diagram typical Rotary Driver System RDS installation 110 Model Aviation Fox Davenport IA new Focus hand-launch glider model weighs 8 ounces Photo author Detail pylon area Mikes scratch-built Focus Hatch provides battery access Photo author V SERVO /TORQUE ROn COUPLER HEARING TUBE other end torque tube pocket made FormicaTM countertop samples embedded control surface just aft hinge line see diagram pocket must made fit particular control surface secret linkage bend torque tube just before enters pocket Rotations torque rod cause bent part rod rotate up down torque rod also slips slightly fore aft pocket during rotation primary advantage RDS drag reduction windtunnel study conducted Dr Werner Wurz Switzerland measured drag external flap aileron linkages Dr Wurz concluded four external linkages create about 10% total drag typical glider roughly equivalent drag horizontal tail secondary advantage RDS linkages cant snag anything Wings equipped RDS slide easily foam-core beds wing bags end Stacking wings also works because no external linkage scratch adjoining wings first saw RDS years ago pessimistic about radical linkages concerns about difficulty installation slop forces servo maintainability Later bought used Genie sailplane direct Harley already RDS installed ailerons slopfree trouble-free installed RDS next full-house glider flew last summer will share things learned Installation easy first RDS took afternoon put because unsure what might critical installed three systems about two hours total Most dimensions noncritical doubtful build mock-up first first installation presheeted obechi wing used Dremel router cut through skin obechi control surface FormicaTM pocket much easier trying fit Learn paint like pros Fast easy way make stitches Simple method finishing tapes use simple system 4Order over internet secure site Paint over fiberglass fabric $1995 US Plus Shipping & handling F&M Enterprises Auburn Dale Drive El Toro California USA 92630-5006 Web address http I/www stits com Phone fax 949-583-1455 E1ib~iII Glow Plugs Introduces NEW SUPER COOL Plug Hi Temp Insulator oniy $229 addition FIREBALL RC IDLE BAR plug $229 Hot & Standard Non-Idle Bar plugs still $195 Swanson Associates PO Box 151 Wayne NJ 07470MIL TheD DIntroductory pnce44 New 29 span 270 1T1 sq wing quick build Bee busy 1st time builders ARF guys can quickly build Fly fast slow set up mild & forgiving wild & snappy plane light enough indoor systems strong enough speed 400 Weighs 14 oz speed 400 8-500 mab cells - uses 01 10 glow power weighs 9 10 oz Cox 049 can fly R/C C02 GM 300 could also flown ass glider recommended trying teach themselves fly As RIC glider weighs 6 7 oz will survive crashes kit very complete wood high quality parts dont need knife build No hardware needed include user feiendly iron-onclearmylarcovering Introductory price $44 including shipping Trexler balloon wheels & tire pump $10 extra accept credit card & COD orders Tel 480-649 1534 Fax 480-649 9040 Web site wwwclancyaviationcom Hours Mon thru Fri 10AM -4PM MST September 1999 111 Exploded view RDS coupler Hitec HS85MG servo scale servo types can used RDS photos Scott Bottorf Authors trick making perfect RDS FormicaTM pockets Rods serve temporary spacers Process takes about 30 minutes I__Ill JIl1 L1iM [] ques Military Civilian Helicopters Sailpianes have worlds kirgest aircraft documentation collection 7400 different full color photo studies 1903-1998 35000 3-view line drawings 1999 Catalog/Guide 228 pages .LCanada Mexca $1000 tuope$1500 Bob BankaeAso ca & Aus alia $1800 AIRCRAFT DOCUMENTATION 3114 Yukon Avenue a Mesa CA 92626 714 979-8058 httg//wwwimtnet/ims/scalehtml TRU-TURN now offers very finest versatile light-weight PROP HUBS turned solid barstock inside out true running hub new hub will mount motor standard TRU-TURN adapter kit big bird multi-bolt applications TRU-TURN has covered TRU-TURN also has PROP NUT will fit motor precision PROP NUTS come engine thread sizes two different shapes available stock Ask hobby dealer name El Made n U 5 PRECISION MODEL PRODUCTS ey Romco Manufacturing Inc QUALITY VERSATILITY GREAT LOOKS TY PO Box 836 South Houston Texas 77587 713 / 943-1867 Visit us Internet ru-turnnet pocket under obechi fibergtassed over area restore strength Some marketing literature RDS claims slop-free system Genie bought Harley slop-free first created wasnt quite way As linkage presence tack stop depends imptementation controtling factor toterances inside dimension FormicaTf pocket pocket fits loosety witi have slop takes skitl iteration get spacers pockets flat right thickness tendency end up nonparallel surfaces after sanding can test fit before instatlation remake pocket until satisfied dislike procedures require skill developed simple direct method make slopfree pockets Ideally inside dimensions FormicaTM pocket will couple thousandths inch larger torque rod accomplish cut least three lengths rod wax lay bottom FormicaTM piece see photo rods act temporary spacers Make plywood spacers slightly thinner rod diameter Exact height level surfaces spacers critical process CyA cyanoacrylate glue spacers bottom piece FormicaTt Mix up epoxy thickened microballoons put some top spacers Put top FormicaTM piece Place FormicaiM sandwich rigid flat surface stack flat piece thick hardwood heavy weight sandwich weight forces excess epoxy out until top FormicaTNf piece resting pieces rod After structure dries pull out rods resulting spacer/epoxy combination exactly thickness rods typical FormicaiM samples lumber stores large enough make two pockets make two pockets step handsaw apart Total pocket creation time less 30 minutes four Result slop-free time concern about strain servo unfounded effective moment arm control surface usually perpendicular distance pushrod hinge line moment arm determines much aerodynamic force servo will feel first glance might guess effective moment arm RDS about /8 inch certainly would gear-down force arrangement result huge aerodynamic forces servo actual effective moment arm RDS complicated determine depends tolerances stiffness elements installed system cases will 112 Model Aviation ance between free tip bent torque rod hinge line typical RDS installation Three Meter glider about 3/4 inch aerodynamic force transferred control surface servo similar standard external linkage 3¼-inch control horn can scale RDS up down large small airplanes Just remember compare estimate effective moment arm properly-sized external control horn Flutter no likely other linkage During year flying tested maintainability RDS RDS test installation included flaps 900 down travel Most time remembered raise flaps just before touchdown glider lands its flaps something must give FormicaiM pockets pretty strong use plastic-geared servos will strip gears used metal-geared servos joint between torque rod servo coupler broke easily removed servo fixed problem got back action new RDS couplers different coupler will still point failure linkage overloaded setscrew will slip will circumferentially gouge torque rod replacement process will easy commercial version RDS setscrew will allow easy removal reinstallation coupler servos accessible type maintenance possible between contest rounds ces Tapered carbon tailbooms Wind kite store Boulder CO 800 204-5483 http//wwwintothewindcom Logic HLG Northeast Sailplane Products 16 Kirby Ln Williston VT 05495 802 658-9482 http//wwwnesailcom Feather HLG Raptor Aerosports 9710 Zelzah Ave #108 Northridge CA 91325 818 993-0570 http//wwwraptorrccom RDS Distributed through Great Planes Horizon hobby stores Ask about local hobby store Detailed RDS information http//wwwhollydaycom/rads/radshtm http//bminetlproptlrds Drag external linkages study http//headecleabsdlrde/Airfoils/linkagehtm Only fl US Hobby Line Model Airplanes Helicopters Boats Cars SE $AiE 6555WehL AenroB FIRE FEVARP 1010 SC GWW IOTOE DARE AFTER SUNSET OEEE Woo Soo 40 LenOYr TOT S/CrAY 5265-24 lOS tRW #945 56 JAGUAR 4OARP IrenoOYYB DEALERS ARID DISTRIBUTORS INOUIAIES WELCOME flBfliflIflM 14002494544 a1-2014604544 WE ACCEPOn ViSA MASYCA CHAD & DIOCOUIIR CARDS 151CM SUBJECT TO CHANGE WITHOUT NOTICE STORE HOURS MONDAY TIERO THURSDAY 10-AM TO TPM FYISAY SAM TO 9PM SATURDAYS lSEM TO 4PM PACITAUSRA AND SHIPPINS RYE SOUS NEW JERSEY OSSISYNTS ASS SPA SALES TAO US HOBBY INC 100 #400NACNIE AVE MOONACHIE NJ 07074 EEE WOO Opa U10 LerrUth TS/ 53W WORYI 33 lEen0U2 SHO US HOBBY INC 17th Annual GREATER SOUTHWEST September 17-19 just South D/FW Awards Pruzesand Raffle RAM 750 AMAJPO ApprovedAMA rules apply Turbine pilots Wavier inline manual fuel shutoff req CDSolomonTET 5 AllenDFoS s E-mailallenrcl@junocomFt 972-263-5913 David Hudsonit 2Ei67 MU cipal OTT 972-264-7574dIothiao Call forNiacjsi detailsI\J671ETrooce W x 5 Onsite$25 00 Pre-reg$2000 Hosted GPMAA September1999 113 Have suggestion about magazine Let us know Model Aviation Suggestion Line Tel 765 288-4899 extension 223 COO P00 AT ED WORLDS LARGEST MANUFACTURER OF SUPERIOR EPOXY-GLASS COWLS WHEEL PANTS SSORIES CALL NOW 810 677-0213 810 677-0414 tordero onlyl [] Send $100 Open $200 inMonday Friday $300 outside USA 10 am 4 pm EST PIPER CUB E-3/ARP 40 SR/LOS/I ALL WUSO 05551 0EEE WrRg OWn AT Length 43 VUeLoEnt 70 AS IEerrEOAJ 1 FAN FLY Al RPORT 45