NO OCR TEXT NO OCR TEXT THIS SAILPLANE conceived state-of-the-art design F3B competi tion utilizes combination Euro pean American unique features produce & highly competitive F3B machine Foam fiberglass technology used extremely strong structure can handle powerful winches having moderate empty weight unballasted wing loading range 115 oz/sq ft fiberglass fuselage foam wing cores being made commercially available nominal cost assist average modeler reproducing Sailplane should stated onset author has competed world class F3B competition American team tri als However plane/pilot combination did place 3rd F3B speed 1983 LSF International Tournament Chicago LarK g sirong spnng holds thewings tightly hatch makes connection removal easy Right Horn base burled control surfaceforatreamlining Simple linkage used minimize projecting objects Trim adjustments made atthe servo end otthe linkage Left ite strips ironed onto tne traiiing eage OT wing iop OT ins nap nunge nwp scull lower aileron surface shown allow downward movement yet resist binding Keep controm u 24 Model Aviation Above right wing root Front cable operates aileron ana rear cable operates flap Right Ballast slugs inserted wing ballast tubes through hatch removing wings making often-required loading changes simple task 2nd F3B 1984 Nationals Reno believed design has potential far beyond its present accomplishments current F3B rules emphasize speed task Speed task can potentially win since best can done regarding duration distance tie Eppler 205 airfoil chosen Europa mind quite number good airfoils also could have used Airfoil type being interesting fun experiment produces relatively small differ ence overall performance F3B competitive Sailplane events consistently high launch pilot/plane flying experience primary importance Zoom launches executed quite well Europa has launched couple powerful winches country foldinz winz Left close lookatthe radio Installation Ball links pop off fiap aileron servos roreasywing removal Right Stit foam rubber squeezed intothe hatch area keepthe ballast slugs moving around ballast must snug enough forthe Ga speed run Left small noTcnea Diocl slips under fuselage rear deck fasten canopy rubberbanu rIuu uuwn flu irrn nIgHT Left aide fin showing rudder cable horn Steel cables used control surfaces provide very tight control no slop Left right sIde fin showing position pinned rudder hinges stab drive fitting Right Closeup tail sembly design stabliator root section avoids usual diagonal cutouts trailing edge allow rudder swing date say would possible difficult deter point wing will break actually breaking Europa wing has mild sweepback Experimentation indicates sweep yields effective dihedral crease result improved turning characteristics Sweep also has psychological effect appearing moving faster whether Flaps chosen glide path control over authors usual preference spoilers done achieve com bination landing control launching aid control surface Approxi mately 100 flap produces some increase launch height amount deflec tion depends pilots launching technique other factors such wind speed ballast Full-flap deflection also useful aborted attempt Sailplane can safely dive very steep angle landed slowly launch ing area much shorter time Sailplane feature thus less working time consumed relaunch Flaps have some undesirable side ef 26 Model Aviation ianajrirui test .flying site europa utilizes state-ot-mne-art crew F3B uuugn fea1uus ommerciaIiy-avaIIabie components greatly simplify construction fin Made s though Some additional drag created hinge line amount drag produced subject consider able debate Europa have used MonoKote seals gaps minimize effect Also pitch-up effect flaps deflected severe enough mixer correct stabilizer trim necessary use electronic mixer transmitter mechanical mixer plane could used Another difficulty using flaps glide path control pan cake effect retracting flaps slow speed overcome slightly higher landing speed can used Ailerons rudder driven inde pendent servos have electronic cou pler transmitter ailerons rudder can coupled uncoupled flight An alternative would have coupled continuously simply connecting both servos aileron channel Y-harness Europa stabilator quite thin might expected create pitch-sensitive condition has proven case flight testing stabilator root section does extend aft rudder hinge line avoids usual diagonal cutout stabilator trailing edge allow rudder swing Direct-drive control cables used control surfaces done dis courage flutter developing due floppy linkages Care must taken choosing cables have close fit outer tubing slop will appear 900 bend point cables Flaps ailer ons driven about center length also lessen possibility flutter Ballast carried wing order keep fuselage small ballast tubes can hold up 56 lb ballast Filling tubes capacity would raise Europa wing loading little over F3B limit Being capable changing ballast quickly F3B important particularly decide working time avoid having remove wings time ballast changed access hatch has designed top fuselage Ballast made up x 2-in brass tubes filled lead see Callisto 82 article October 1982 Model Aviation using ballast tube always completely filled ballast ballast dowel dummy slugs held place stiff piece foam squeezed hatch area first thought Europa would good Sailplane AMA Unlimited duration events because its weight Early tried type event did particularly well Yet some well-known fliers using Sailplanes wing loadings comparable level higher quite successfully July1985 27 Left spars built-up external core straightedge weights used ensure trueness Above wing joiner tubes being fitted spars Proper wing dl hedrai sweep must estabiished spars correct wing-fuseiage alignment Roove pars soiia ana run Ins full loiner tubes completeiy installed before spars go wi paneis procedure differs usual construction methods Right Cutting foam wing cores hot wire See text source cores spar notches core used reference Foam between notches will completely removed replaced spar Photo credit bythe author duration-type events Later discov ered main problem plane simply required different piloting technique lighter ship windy conditions Europa actual ly has advantage over conventional duration designs Lighter planes hav ing add ballast match wing loadI ings Europa Europa has superior strength designed fly higher airspeeds Building lighter weight version Europa specifically duration events has also considered should make interesting Sailplane AAILERON CONTROL CABLE TUBE-y FLAP CONTROL CABLEFUBE LEFT WING ~--6 FLAP CCNTROL1 CABLE TUBE Il/3D GD NEASS WING TUNE CUP HOOE WING RETAINER CUT CORE ROOT TBOARD LEAN OR ROUT RIB TO MATCH ROE FANRID I/IN PLY ROOT RIB NNN-------\~N--- TNT - aDIAnGWa- 3/32 PLY 71 OUTRIDE WEB I/O ID CARI MOTOR TUB TUB ED 3W SPRUCE WING PIN ANCHOR BLOCKS W NO P N TUBE 3/IN LW SPRUCE ALEADING EDGE 3/IN 3/N SPRUCE TIP_________ 3/RMESIUM BALSASTABILATOR LEFT SIDE SHEET ___________ 1/IN 1/4 GPRGCE TRAILING EDGEG PF B FUSELAGE IS 3 LAYERS GE 6 UZ /50 FT 216 PLY FIBERGLASS CLOTH CANGEY TRIM LINE B AB 11W PLY SPRUI SPAN itself Construction expected modelers choosing build Europa F3B competition have reasonable amount construction experience Modelers like usually have own building techniques may actually make design modifications along way Therefore general building notes will given rather step-by-step instructions fiberglass fuselage commercially available Viking Models 2026 Spring Lake Dr Martinez CA 94553 Likewise foam wing cores available Viking can make core templates plans cut yourself standard hot wire cutter used Wing wing spar full length solid construction made spruce plywood balsa capped carbon fiber tape after installation core carbon fiber tape can eliminated substituting carbon fiber spars instead spruce spars However carbon fiber spars sometimes difficult obtain 28 Model Aviation core aft ot spar cut two pieces aid cutting ballast tube holes close-up OT tne ballast tuow nulOS made using small templates clr cular holes guides hot wire cutter Top wing showing epoxied-on carbonflbertape Control cabletubing can seen Imbedded foam availabie carbonfiber spars can used instead spruce Full-Size Plans Available. See Page 164 3 EACH2-7/82-7/H VIA PLY EXTERNAL3/B US BALSA WEBLEANG EDGENOTE 3/B VERTICAL GRAIN [ii-i BALSA WEB ENTIRE LENGTHWING DRAL OF SPANSECTON D-DSECTION C-C BALSA BLGCK WINGTIP OH N 3/B SPRSCE SPAR FOAM CORE WINS z WIDE CARBON FIBER TAPE EPOSIED ON TOP B BOTTOM OF CORE FROM THIS LOCATION TO WING ROOT WING PLAN TOP VIEWL4RALSA ANSENOTE CONTROL CABLES 1/16 PLY BALLASTNOTE FLAP HINGES LOCATES ompON LONER SURFACE OF WINGRIGHT SIDEBLOCKSiC HONN3/IA 3/H BALSAT E STOCK -WHEEL COLLAR FOR LOCAING STAB ON -I/HOD BRASS SECTION E-E TSBING iii I/IA 1/4 SPRGCE TRAILING EGGE -2B 3/B SPRUCE CARBON FIRERSPAR ________________TAFE lAG PLY 13/8 SPRUCE- EB3/B BALSA SECTION F-F'INTERNAL TORSO BRASSCGRBONV/ES TUBINGFIBER TAPESECTION B-B -I/IA PLY ROOT SECTION 5-5 RIB 3/30 BALSA HATCH COVERI/B BRASS /TUSE NOTE AILERON HINGES LOCATES ON OPPER SURFACE OF WINS AIRS ROOT FOAM CORE TEMPLATES IVI6IHIZ GRAIN BALSA CAPS TO COVER WCBARE FOAM AFTER CGTTINS SOT FLAPS 02/S AILERONS AILERONLEFTRISHT CABLEFLAPFLAPMICROBALLOON CABLEFILLER BALSA ~lIE ETI PLY S HE ETI NO SECTION A-AFOOM CARBONCORE FIBE TAPEID GIA ITOWEL SPRUCE LEADING EDGEI/IA BALSA SVEETINS 3/B PLY \\V4 BALSA5o/H3RN IOTOJNT SPRUCE FUSELAGE VIFW MN TH LOC3/H BALSA FELECTRICAL SPECIFICATIONSI/B OS BRASSTERMINAL WINS SPAN110TGBE OcLOERED WINS AREA930 55 IN I/IS I/B BALSALENGTH505 HATCH FRAMESTAB AREA114 55 INSTABILATOR DRIVE WEISHT EMPTY. 74 OZ WINS LUGGING -- liD OZ/SS FT WINS JOINTER5/IA OIA B-U/A ___IA WING PIN S/30DIA A15/AVA PLY INSERT STAB JOINTERO. 3/3001G 3-7/IA AILERON THROW. V 3/4 TO 1/4 AT TE H RUISDER ThROW. 4 AT TE JI I/O AT TEF DEFLAP THROW55 BALLAST CAP. 56 LBS NUTE- FIN SIDES COVERED /HSO FILL SOlD WITH EPOSYWITH I/IA SALSU SOWN TO GNU MICROBALLOONSFUSE TOP BUT NOT EXTENDINGTGRO8EARiS/j/ INTO FUSE SHEETINSNOT SHOWN ON SID VIEW IS TUTAL ISNESS 3/BBEFORE SHAPINGII ALSA QISHEET FUSELAGE SIDE VIEW-___ F3/H PLY 1/4LOCATN OF STAB EPLYI/B TUBECONTROL TSBINS TO/PA 006 LOCATION________________ 23HSA BALSA / SHEET SECTION H-H 1/455 SPRUCE LEADING EDGEI/IA BALSA TINSSECTION I-I spars separately constructed unit core Build completely building board except rear 3/ ply webbing wing tubes carefully align spars building MODEL AVIATION EUROPA F 3 B COMPETITION SAILPLANE DESIGNED BY TERRY EDMONDS TRACING BY JOE DEMARCO Bottom ottfle wing Just priorto gluing onthe sheeting Chord-wise seam core ballast stop plate visible plc Flaps ailerons being cut band saw Core bed underneath wing keep level goes through Taper aileron leading edge allow downward motion July1985 29 Left Slots wing hinges Ailerons hinged top surface flaps bottom surface Pm-notching hinge blocks will make alignment easier Right fin has V4-in balsa sheet core stabilator control cable tubing embedded core Left fin rudder after sheeting has applied shaped rudder made solid sheet balsa Right stabilator under construction Joiner tubing installed full-length pieces assure alignment Later stab cut left right halves board proper dihedral sweepback single length brass wing tubing fit cavities Some hollowing-out Y2 ply webbing may necessary proper fit wing tube Install rear webbing filling cavity microballoons epoxy Finally tubing can cut off A6 beyond end spars core must cut two pieces spar installed spar notches core templates refer ence whole area between notch es eventually cut out also time cut out cavities ballast tubes method cut core piece aft spar two pieces end ballast tubes perpendicular trailing edge cavities can easily cut out hot wire foam cutter Small templates tangent circles can made core pieces spar epoxied back together time Place pieces back core beds weigh down until fully cured Next carbon fiber tape can epoxied top bottom core over spars Regular pinned hinges used control surfaces requires installing balsa anchor blocks foam core intended locations Note hinges flaps bottom surface aileron hinges top Use single blocks both wing control surface also pre-notch blocks hinges making easy hinge alignment Anchor blocks horns also stalled now Install ballast tubes ballast stop plates control cable tubings dowel hook anchors cores point initial fitting wing fuselage should done Carefully align wing panels fuselage sure have equal incidence glue rear wing pin tubes anchor blocks Prepare cores installation sheeting will slightly raised portion over carbon fiber tape can corrected final-sanding sheeting top surface Glue sheeting followed leading edge trailing edge tip blocks Make final fit wing panels fuselage glue ply root ribs Sand wing shape sand down bump over carbon fiber tape smooth contour Saw out flaps ailerons band saw handy Putting wing panel lower core bed keeps level going through saw Trim raw edges install balsa caps Note leading edge ailerons has tapered gap bottom hinge line allow downward deflection Hinges horns can now fitted glue until wings have covered horns have mount ing tabs cut off epoxied directly slot anchor blocks Small holes should drilled horn base epoxy hold onto stabilator very simply made %-in balsa sheet edged spruce strips hard part sanding shape using ply root rib gauge lit tle practice can shaped accurately jointer wire tubes should installed full-length pieces later cut left right halves assure alignment Wheel collars installed front wire locking stabilator fin rear jointer wire bent slightly give some grab commonly done Fin rudder fin has -in balsa core core built up spruce edg Continued page 128 30 Model Aviation MINI-STRIPS PRECISION DIE-CUT Medium Garnet SAVES TIMEREPLACEMENTPies Garnet AND EFFORT $155SANDING BELTSAssId Water Pratt TEE ALUMINUM EXTRUSION SANDING BLOCK hi us BUFF-STUFF Sail-adhesive sand paper Luge True Seduce Went Wear Del 11 Inch $250 Handy Use22 inch $365 RUFF F SELF ADHESIVE SHEET SANDPAPER MAKE YOUR OWN SPECIAL SANDING SHAPES Na mssy glue ar dryhIR hiM Medium Fine r Flue $99 M N $699 COMPACT 10 inch HACK SAW SAWS ANYTHING ANYWHERE Saw has rugged die-casl trum cemlertuhie chip-pruel plastic Iq sad handle Receding ne P justahle B hlade gives pad walk access Cuts weed plastic m# HARDENED MUSIC WIREextra hlndes-SIS199 Safety/Preston Continued page 125 models reader Col Bill Webb found out hard way Bill flies Colum bus Aero Club field apparently has some overhead power lines skirt flying area However Bill thinks RF emission high-voltage trans mission lines caused interference radio resulted loss model follows flying Old Reliable high-quality three-channel radio good 25 glow engine good weather sunny wind five eight mph just chopped throttle make approach land lost control plane went slow lazy left turn flew power lines gripped big hand could have lodged plane tighter can see Bill included color photos accompany column called Ohio Power Company snt truck out crew said hO wiyY wires main lines ultra-high voltage ground ing damp could help talked other club members past have hit strange glitches same end field think theory interference correct wires over 2700 feet away closest point nothing like has ever happened before feel bad about loss plane worth life try retrieve previous Safety column reported result modeler trying retrieve model caught overhead power lines died under circumstances attempt such retrieval yourself Call power company Bills case will perform job themselves accept fact just lost model last sobering story before leave month couple weeks ago received phone call Kevin Stone Massachusetts modeler told about incident occurred bending A-inch music wire landing gear around %-inch-diameter hardened steel mandrel mandrel snapped struck Kevin face resulted loss eye freak accident perhaps However points out need consider wearing safety glasses both workshop out flying field Till next monthHave safe John Preston 12235 Ti/den wood Dr Rockville MD 20852 responding advertisers riention read about Model Aviation Europoa/Edmonds Continued page 30 ing pieces ply insert control cable tubing stab drive fitting must made up installed now Cut A-in slot top fuselage tail boom fit fin core position Mark top boom lies fin sides Glue balsa fin side sheeting marks up Build up rudder sand fin rudder shape Pinned hinges used rudder should fit no hinge line gap Fuselage Cut out opening top access hatch small frame con structed around inside edges opening hatch cover made out balsa sanded contour fuselage wing rod tube fuselage should have glued fitting wing fuselage Plywood spruce microballoons/epoxy mixture used additional support wing rod tube fin now glued fuselage tail boom wing panels installed making certain fin perpendicular wing may help ful also have stabilator doing Control cable tubes fuse lage should secured along entire length least much possible 128 Model Aviation r NYLON SCREWS No fancy packaging Just great selection low prices 6-32 x17/s100 Os 8-32x2MlOOsa 10-24x 1112100 sa 1O-32x2lOOsa 114-20X2_____ 120ea 1/4 20 x 3200 Os 1/4. x 4600 ea Solialler larger sizes also available Shipping Under $10 add $150 Over $10 Free SPECIAI 516 Greenway Drive London KY 40741 Dealer Inquiries welcome L APPLIED DESIGN CORPORATION 738 Pann St El SegUnds CA 90245 WICH Padded tall aAd carves Handy ta Maid Easy Use $235 Add 20% postage Send 25 cattlog i LIONS BONN Ultimate Fun Fly Competition Model Ideal Sunday Flyer Excellent OS 65 PS ptIonally slow land ing speed le enough 1st AIleron model easily framed less U hrs. balsa raft plywood construction ed full sise plans EngIne45 61 Wingspan62 Length OA54 WIng Area850 sq Weight Sf 6 Lbs Wing LoadIng15 17 ox Designed Uob Lame kit market sold satisfaction guarantee money back LIST PRICE 94 S 5995 Introductory prIce offor limIted time Prepald Continental USA Texas Residents Add 5% Sales Tax Sand Money Orders Cashiers Check Next Day Shipping Allow 2 Weeks personal checks clear Sorry no COD Curtis Model Aircraft 3002 M Canterbury Circle Sherman Texas 75090 AC 214-U936155 High-speed maneuvering can cause unsupported tubes distort interfere control Finish MonoKote recommended wood surfaces K&B paint fuselage Alternately other finishes could considered weight buildup should avoided F3B models tend relatively heavy adding unneces sary finish weight Installation flap aileron cables installed per plans servo arrangement will have close photographs Kraft KPS-24 servos used prototype because have high torque tight centering aileron flap servos in-line rudder stabilator servos across in-line servos mounted plywood tray make installation removal easier other servos rails Ball links used attach flap aileron linkage links snapped forefinger link easily unsnapped placing small flat-blade screwdriver underneath twisting Aileron differential adjusted take-off point servo wheel Flying Hand toss model few times check out control sensitivity Hook winch build up fairly large line tension before launching recom mended become familiar Europa before using flaps large degree very easy use too much flap actually decrease performance rather increase Europa can also successfully launched high-start word cau tion use heavy-duty high-start stretch minimum 12 pounds pull Europa light airplane Speed runs should first flown out ballast get feel ship Slowly add ballast find highest speed point Remember keep nose down turns avoid losing momen tum Split-S turns effective turns two practice altitude first Radio Technique/Myers Continued page 34 ations RC flying will become safer best results everything should parallel redundant transmitter batteries servos plane Well frIends readers weve covered lot ground column started ultra-simple receiver no larger thumbnail have progressed through discussion possible advan tages obtained grouping RC channels concepts safer RC system on-board sampling com puter multiple parallel redundancy doesnt exist yet Weve looked what what might tip hat John Preston have talked little philosophy hope youve enjoyed Keep writing George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Toledo/Pruss Continued page 38 already have set good track record Davey also manufactures Sport Winch Powrzoom Winch Hobby Lobby rare Sailplanes Germany Hobby Lobbys line will hard top Schulgleiter SG-38 kit masterpiece full choice woods de tailed fittings thatsells for$128 -scale has span 102 area 1627 sq m also carry Gnmau Baby Reiher all-fiberglass state-of-theart Speed Astir spans over 12 ft latter priced $680 Bob Martin showed another Two-Meter bird called Pussycat has simple straightforward construction very tractive linesdesigned both Thermal Slope Soaring MEN Model Engineering Nor walk Dwight Holley F3B World Champion 1981 Dwights basically all-wood model caused fiberglass school construction sit up take notice Dwights Gobbler avail able MEN did everything glass ships did except better has 114 July 1985 129
Edition: Model Aviation - 1985/07
Page Numbers: 22, 23, 24, 25, 26, 27, 28, 29, 30, 128, 129
NO OCR TEXT NO OCR TEXT THIS SAILPLANE conceived state-of-the-art design F3B competi tion utilizes combination Euro pean American unique features produce & highly competitive F3B machine Foam fiberglass technology used extremely strong structure can handle powerful winches having moderate empty weight unballasted wing loading range 115 oz/sq ft fiberglass fuselage foam wing cores being made commercially available nominal cost assist average modeler reproducing Sailplane should stated onset author has competed world class F3B competition American team tri als However plane/pilot combination did place 3rd F3B speed 1983 LSF International Tournament Chicago LarK g sirong spnng holds thewings tightly hatch makes connection removal easy Right Horn base burled control surfaceforatreamlining Simple linkage used minimize projecting objects Trim adjustments made atthe servo end otthe linkage Left ite strips ironed onto tne traiiing eage OT wing iop OT ins nap nunge nwp scull lower aileron surface shown allow downward movement yet resist binding Keep controm u 24 Model Aviation Above right wing root Front cable operates aileron ana rear cable operates flap Right Ballast slugs inserted wing ballast tubes through hatch removing wings making often-required loading changes simple task 2nd F3B 1984 Nationals Reno believed design has potential far beyond its present accomplishments current F3B rules emphasize speed task Speed task can potentially win since best can done regarding duration distance tie Eppler 205 airfoil chosen Europa mind quite number good airfoils also could have used Airfoil type being interesting fun experiment produces relatively small differ ence overall performance F3B competitive Sailplane events consistently high launch pilot/plane flying experience primary importance Zoom launches executed quite well Europa has launched couple powerful winches country foldinz winz Left close lookatthe radio Installation Ball links pop off fiap aileron servos roreasywing removal Right Stit foam rubber squeezed intothe hatch area keepthe ballast slugs moving around ballast must snug enough forthe Ga speed run Left small noTcnea Diocl slips under fuselage rear deck fasten canopy rubberbanu rIuu uuwn flu irrn nIgHT Left aide fin showing rudder cable horn Steel cables used control surfaces provide very tight control no slop Left right sIde fin showing position pinned rudder hinges stab drive fitting Right Closeup tail sembly design stabliator root section avoids usual diagonal cutouts trailing edge allow rudder swing date say would possible difficult deter point wing will break actually breaking Europa wing has mild sweepback Experimentation indicates sweep yields effective dihedral crease result improved turning characteristics Sweep also has psychological effect appearing moving faster whether Flaps chosen glide path control over authors usual preference spoilers done achieve com bination landing control launching aid control surface Approxi mately 100 flap produces some increase launch height amount deflec tion depends pilots launching technique other factors such wind speed ballast Full-flap deflection also useful aborted attempt Sailplane can safely dive very steep angle landed slowly launch ing area much shorter time Sailplane feature thus less working time consumed relaunch Flaps have some undesirable side ef 26 Model Aviation ianajrirui test .flying site europa utilizes state-ot-mne-art crew F3B uuugn fea1uus ommerciaIiy-avaIIabie components greatly simplify construction fin Made s though Some additional drag created hinge line amount drag produced subject consider able debate Europa have used MonoKote seals gaps minimize effect Also pitch-up effect flaps deflected severe enough mixer correct stabilizer trim necessary use electronic mixer transmitter mechanical mixer plane could used Another difficulty using flaps glide path control pan cake effect retracting flaps slow speed overcome slightly higher landing speed can used Ailerons rudder driven inde pendent servos have electronic cou pler transmitter ailerons rudder can coupled uncoupled flight An alternative would have coupled continuously simply connecting both servos aileron channel Y-harness Europa stabilator quite thin might expected create pitch-sensitive condition has proven case flight testing stabilator root section does extend aft rudder hinge line avoids usual diagonal cutout stabilator trailing edge allow rudder swing Direct-drive control cables used control surfaces done dis courage flutter developing due floppy linkages Care must taken choosing cables have close fit outer tubing slop will appear 900 bend point cables Flaps ailer ons driven about center length also lessen possibility flutter Ballast carried wing order keep fuselage small ballast tubes can hold up 56 lb ballast Filling tubes capacity would raise Europa wing loading little over F3B limit Being capable changing ballast quickly F3B important particularly decide working time avoid having remove wings time ballast changed access hatch has designed top fuselage Ballast made up x 2-in brass tubes filled lead see Callisto 82 article October 1982 Model Aviation using ballast tube always completely filled ballast ballast dowel dummy slugs held place stiff piece foam squeezed hatch area first thought Europa would good Sailplane AMA Unlimited duration events because its weight Early tried type event did particularly well Yet some well-known fliers using Sailplanes wing loadings comparable level higher quite successfully July1985 27 Left spars built-up external core straightedge weights used ensure trueness Above wing joiner tubes being fitted spars Proper wing dl hedrai sweep must estabiished spars correct wing-fuseiage alignment Roove pars soiia ana run Ins full loiner tubes completeiy installed before spars go wi paneis procedure differs usual construction methods Right Cutting foam wing cores hot wire See text source cores spar notches core used reference Foam between notches will completely removed replaced spar Photo credit bythe author duration-type events Later discov ered main problem plane simply required different piloting technique lighter ship windy conditions Europa actual ly has advantage over conventional duration designs Lighter planes hav ing add ballast match wing loadI ings Europa Europa has superior strength designed fly higher airspeeds Building lighter weight version Europa specifically duration events has also considered should make interesting Sailplane AAILERON CONTROL CABLE TUBE-y FLAP CONTROL CABLEFUBE LEFT WING ~--6 FLAP CCNTROL1 CABLE TUBE Il/3D GD NEASS WING TUNE CUP HOOE WING RETAINER CUT CORE ROOT TBOARD LEAN OR ROUT RIB TO MATCH ROE FANRID I/IN PLY ROOT RIB NNN-------\~N--- TNT - aDIAnGWa- 3/32 PLY 71 OUTRIDE WEB I/O ID CARI MOTOR TUB TUB ED 3W SPRUCE WING PIN ANCHOR BLOCKS W NO P N TUBE 3/IN LW SPRUCE ALEADING EDGE 3/IN 3/N SPRUCE TIP_________ 3/RMESIUM BALSASTABILATOR LEFT SIDE SHEET ___________ 1/IN 1/4 GPRGCE TRAILING EDGEG PF B FUSELAGE IS 3 LAYERS GE 6 UZ /50 FT 216 PLY FIBERGLASS CLOTH CANGEY TRIM LINE B AB 11W PLY SPRUI SPAN itself Construction expected modelers choosing build Europa F3B competition have reasonable amount construction experience Modelers like usually have own building techniques may actually make design modifications along way Therefore general building notes will given rather step-by-step instructions fiberglass fuselage commercially available Viking Models 2026 Spring Lake Dr Martinez CA 94553 Likewise foam wing cores available Viking can make core templates plans cut yourself standard hot wire cutter used Wing wing spar full length solid construction made spruce plywood balsa capped carbon fiber tape after installation core carbon fiber tape can eliminated substituting carbon fiber spars instead spruce spars However carbon fiber spars sometimes difficult obtain 28 Model Aviation core aft ot spar cut two pieces aid cutting ballast tube holes close-up OT tne ballast tuow nulOS made using small templates clr cular holes guides hot wire cutter Top wing showing epoxied-on carbonflbertape Control cabletubing can seen Imbedded foam availabie carbonfiber spars can used instead spruce Full-Size Plans Available. See Page 164 3 EACH2-7/82-7/H VIA PLY EXTERNAL3/B US BALSA WEBLEANG EDGENOTE 3/B VERTICAL GRAIN [ii-i BALSA WEB ENTIRE LENGTHWING DRAL OF SPANSECTON D-DSECTION C-C BALSA BLGCK WINGTIP OH N 3/B SPRSCE SPAR FOAM CORE WINS z WIDE CARBON FIBER TAPE EPOSIED ON TOP B BOTTOM OF CORE FROM THIS LOCATION TO WING ROOT WING PLAN TOP VIEWL4RALSA ANSENOTE CONTROL CABLES 1/16 PLY BALLASTNOTE FLAP HINGES LOCATES ompON LONER SURFACE OF WINGRIGHT SIDEBLOCKSiC HONN3/IA 3/H BALSAT E STOCK -WHEEL COLLAR FOR LOCAING STAB ON -I/HOD BRASS SECTION E-E TSBING iii I/IA 1/4 SPRGCE TRAILING EGGE -2B 3/B SPRUCE CARBON FIRERSPAR ________________TAFE lAG PLY 13/8 SPRUCE- EB3/B BALSA SECTION F-F'INTERNAL TORSO BRASSCGRBONV/ES TUBINGFIBER TAPESECTION B-B -I/IA PLY ROOT SECTION 5-5 RIB 3/30 BALSA HATCH COVERI/B BRASS /TUSE NOTE AILERON HINGES LOCATES ON OPPER SURFACE OF WINS AIRS ROOT FOAM CORE TEMPLATES IVI6IHIZ GRAIN BALSA CAPS TO COVER WCBARE FOAM AFTER CGTTINS SOT FLAPS 02/S AILERONS AILERONLEFTRISHT CABLEFLAPFLAPMICROBALLOON CABLEFILLER BALSA ~lIE ETI PLY S HE ETI NO SECTION A-AFOOM CARBONCORE FIBE TAPEID GIA ITOWEL SPRUCE LEADING EDGEI/IA BALSA SVEETINS 3/B PLY \\V4 BALSA5o/H3RN IOTOJNT SPRUCE FUSELAGE VIFW MN TH LOC3/H BALSA FELECTRICAL SPECIFICATIONSI/B OS BRASSTERMINAL WINS SPAN110TGBE OcLOERED WINS AREA930 55 IN I/IS I/B BALSALENGTH505 HATCH FRAMESTAB AREA114 55 INSTABILATOR DRIVE WEISHT EMPTY. 74 OZ WINS LUGGING -- liD OZ/SS FT WINS JOINTER5/IA OIA B-U/A ___IA WING PIN S/30DIA A15/AVA PLY INSERT STAB JOINTERO. 3/3001G 3-7/IA AILERON THROW. V 3/4 TO 1/4 AT TE H RUISDER ThROW. 4 AT TE JI I/O AT TEF DEFLAP THROW55 BALLAST CAP. 56 LBS NUTE- FIN SIDES COVERED /HSO FILL SOlD WITH EPOSYWITH I/IA SALSU SOWN TO GNU MICROBALLOONSFUSE TOP BUT NOT EXTENDINGTGRO8EARiS/j/ INTO FUSE SHEETINSNOT SHOWN ON SID VIEW IS TUTAL ISNESS 3/BBEFORE SHAPINGII ALSA QISHEET FUSELAGE SIDE VIEW-___ F3/H PLY 1/4LOCATN OF STAB EPLYI/B TUBECONTROL TSBINS TO/PA 006 LOCATION________________ 23HSA BALSA / SHEET SECTION H-H 1/455 SPRUCE LEADING EDGEI/IA BALSA TINSSECTION I-I spars separately constructed unit core Build completely building board except rear 3/ ply webbing wing tubes carefully align spars building MODEL AVIATION EUROPA F 3 B COMPETITION SAILPLANE DESIGNED BY TERRY EDMONDS TRACING BY JOE DEMARCO Bottom ottfle wing Just priorto gluing onthe sheeting Chord-wise seam core ballast stop plate visible plc Flaps ailerons being cut band saw Core bed underneath wing keep level goes through Taper aileron leading edge allow downward motion July1985 29 Left Slots wing hinges Ailerons hinged top surface flaps bottom surface Pm-notching hinge blocks will make alignment easier Right fin has V4-in balsa sheet core stabilator control cable tubing embedded core Left fin rudder after sheeting has applied shaped rudder made solid sheet balsa Right stabilator under construction Joiner tubing installed full-length pieces assure alignment Later stab cut left right halves board proper dihedral sweepback single length brass wing tubing fit cavities Some hollowing-out Y2 ply webbing may necessary proper fit wing tube Install rear webbing filling cavity microballoons epoxy Finally tubing can cut off A6 beyond end spars core must cut two pieces spar installed spar notches core templates refer ence whole area between notch es eventually cut out also time cut out cavities ballast tubes method cut core piece aft spar two pieces end ballast tubes perpendicular trailing edge cavities can easily cut out hot wire foam cutter Small templates tangent circles can made core pieces spar epoxied back together time Place pieces back core beds weigh down until fully cured Next carbon fiber tape can epoxied top bottom core over spars Regular pinned hinges used control surfaces requires installing balsa anchor blocks foam core intended locations Note hinges flaps bottom surface aileron hinges top Use single blocks both wing control surface also pre-notch blocks hinges making easy hinge alignment Anchor blocks horns also stalled now Install ballast tubes ballast stop plates control cable tubings dowel hook anchors cores point initial fitting wing fuselage should done Carefully align wing panels fuselage sure have equal incidence glue rear wing pin tubes anchor blocks Prepare cores installation sheeting will slightly raised portion over carbon fiber tape can corrected final-sanding sheeting top surface Glue sheeting followed leading edge trailing edge tip blocks Make final fit wing panels fuselage glue ply root ribs Sand wing shape sand down bump over carbon fiber tape smooth contour Saw out flaps ailerons band saw handy Putting wing panel lower core bed keeps level going through saw Trim raw edges install balsa caps Note leading edge ailerons has tapered gap bottom hinge line allow downward deflection Hinges horns can now fitted glue until wings have covered horns have mount ing tabs cut off epoxied directly slot anchor blocks Small holes should drilled horn base epoxy hold onto stabilator very simply made %-in balsa sheet edged spruce strips hard part sanding shape using ply root rib gauge lit tle practice can shaped accurately jointer wire tubes should installed full-length pieces later cut left right halves assure alignment Wheel collars installed front wire locking stabilator fin rear jointer wire bent slightly give some grab commonly done Fin rudder fin has -in balsa core core built up spruce edg Continued page 128 30 Model Aviation MINI-STRIPS PRECISION DIE-CUT Medium Garnet SAVES TIMEREPLACEMENTPies Garnet AND EFFORT $155SANDING BELTSAssId Water Pratt TEE ALUMINUM EXTRUSION SANDING BLOCK hi us BUFF-STUFF Sail-adhesive sand paper Luge True Seduce Went Wear Del 11 Inch $250 Handy Use22 inch $365 RUFF F SELF ADHESIVE SHEET SANDPAPER MAKE YOUR OWN SPECIAL SANDING SHAPES Na mssy glue ar dryhIR hiM Medium Fine r Flue $99 M N $699 COMPACT 10 inch HACK SAW SAWS ANYTHING ANYWHERE Saw has rugged die-casl trum cemlertuhie chip-pruel plastic Iq sad handle Receding ne P justahle B hlade gives pad walk access Cuts weed plastic m# HARDENED MUSIC WIREextra hlndes-SIS199 Safety/Preston Continued page 125 models reader Col Bill Webb found out hard way Bill flies Colum bus Aero Club field apparently has some overhead power lines skirt flying area However Bill thinks RF emission high-voltage trans mission lines caused interference radio resulted loss model follows flying Old Reliable high-quality three-channel radio good 25 glow engine good weather sunny wind five eight mph just chopped throttle make approach land lost control plane went slow lazy left turn flew power lines gripped big hand could have lodged plane tighter can see Bill included color photos accompany column called Ohio Power Company snt truck out crew said hO wiyY wires main lines ultra-high voltage ground ing damp could help talked other club members past have hit strange glitches same end field think theory interference correct wires over 2700 feet away closest point nothing like has ever happened before feel bad about loss plane worth life try retrieve previous Safety column reported result modeler trying retrieve model caught overhead power lines died under circumstances attempt such retrieval yourself Call power company Bills case will perform job themselves accept fact just lost model last sobering story before leave month couple weeks ago received phone call Kevin Stone Massachusetts modeler told about incident occurred bending A-inch music wire landing gear around %-inch-diameter hardened steel mandrel mandrel snapped struck Kevin face resulted loss eye freak accident perhaps However points out need consider wearing safety glasses both workshop out flying field Till next monthHave safe John Preston 12235 Ti/den wood Dr Rockville MD 20852 responding advertisers riention read about Model Aviation Europoa/Edmonds Continued page 30 ing pieces ply insert control cable tubing stab drive fitting must made up installed now Cut A-in slot top fuselage tail boom fit fin core position Mark top boom lies fin sides Glue balsa fin side sheeting marks up Build up rudder sand fin rudder shape Pinned hinges used rudder should fit no hinge line gap Fuselage Cut out opening top access hatch small frame con structed around inside edges opening hatch cover made out balsa sanded contour fuselage wing rod tube fuselage should have glued fitting wing fuselage Plywood spruce microballoons/epoxy mixture used additional support wing rod tube fin now glued fuselage tail boom wing panels installed making certain fin perpendicular wing may help ful also have stabilator doing Control cable tubes fuse lage should secured along entire length least much possible 128 Model Aviation r NYLON SCREWS No fancy packaging Just great selection low prices 6-32 x17/s100 Os 8-32x2MlOOsa 10-24x 1112100 sa 1O-32x2lOOsa 114-20X2_____ 120ea 1/4 20 x 3200 Os 1/4. x 4600 ea Solialler larger sizes also available Shipping Under $10 add $150 Over $10 Free SPECIAI 516 Greenway Drive London KY 40741 Dealer Inquiries welcome L APPLIED DESIGN CORPORATION 738 Pann St El SegUnds CA 90245 WICH Padded tall aAd carves Handy ta Maid Easy Use $235 Add 20% postage Send 25 cattlog i LIONS BONN Ultimate Fun Fly Competition Model Ideal Sunday Flyer Excellent OS 65 PS ptIonally slow land ing speed le enough 1st AIleron model easily framed less U hrs. balsa raft plywood construction ed full sise plans EngIne45 61 Wingspan62 Length OA54 WIng Area850 sq Weight Sf 6 Lbs Wing LoadIng15 17 ox Designed Uob Lame kit market sold satisfaction guarantee money back LIST PRICE 94 S 5995 Introductory prIce offor limIted time Prepald Continental USA Texas Residents Add 5% Sales Tax Sand Money Orders Cashiers Check Next Day Shipping Allow 2 Weeks personal checks clear Sorry no COD Curtis Model Aircraft 3002 M Canterbury Circle Sherman Texas 75090 AC 214-U936155 High-speed maneuvering can cause unsupported tubes distort interfere control Finish MonoKote recommended wood surfaces K&B paint fuselage Alternately other finishes could considered weight buildup should avoided F3B models tend relatively heavy adding unneces sary finish weight Installation flap aileron cables installed per plans servo arrangement will have close photographs Kraft KPS-24 servos used prototype because have high torque tight centering aileron flap servos in-line rudder stabilator servos across in-line servos mounted plywood tray make installation removal easier other servos rails Ball links used attach flap aileron linkage links snapped forefinger link easily unsnapped placing small flat-blade screwdriver underneath twisting Aileron differential adjusted take-off point servo wheel Flying Hand toss model few times check out control sensitivity Hook winch build up fairly large line tension before launching recom mended become familiar Europa before using flaps large degree very easy use too much flap actually decrease performance rather increase Europa can also successfully launched high-start word cau tion use heavy-duty high-start stretch minimum 12 pounds pull Europa light airplane Speed runs should first flown out ballast get feel ship Slowly add ballast find highest speed point Remember keep nose down turns avoid losing momen tum Split-S turns effective turns two practice altitude first Radio Technique/Myers Continued page 34 ations RC flying will become safer best results everything should parallel redundant transmitter batteries servos plane Well frIends readers weve covered lot ground column started ultra-simple receiver no larger thumbnail have progressed through discussion possible advan tages obtained grouping RC channels concepts safer RC system on-board sampling com puter multiple parallel redundancy doesnt exist yet Weve looked what what might tip hat John Preston have talked little philosophy hope youve enjoyed Keep writing George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Toledo/Pruss Continued page 38 already have set good track record Davey also manufactures Sport Winch Powrzoom Winch Hobby Lobby rare Sailplanes Germany Hobby Lobbys line will hard top Schulgleiter SG-38 kit masterpiece full choice woods de tailed fittings thatsells for$128 -scale has span 102 area 1627 sq m also carry Gnmau Baby Reiher all-fiberglass state-of-theart Speed Astir spans over 12 ft latter priced $680 Bob Martin showed another Two-Meter bird called Pussycat has simple straightforward construction very tractive linesdesigned both Thermal Slope Soaring MEN Model Engineering Nor walk Dwight Holley F3B World Champion 1981 Dwights basically all-wood model caused fiberglass school construction sit up take notice Dwights Gobbler avail able MEN did everything glass ships did except better has 114 July 1985 129
Edition: Model Aviation - 1985/07
Page Numbers: 22, 23, 24, 25, 26, 27, 28, 29, 30, 128, 129
NO OCR TEXT NO OCR TEXT THIS SAILPLANE conceived state-of-the-art design F3B competi tion utilizes combination Euro pean American unique features produce & highly competitive F3B machine Foam fiberglass technology used extremely strong structure can handle powerful winches having moderate empty weight unballasted wing loading range 115 oz/sq ft fiberglass fuselage foam wing cores being made commercially available nominal cost assist average modeler reproducing Sailplane should stated onset author has competed world class F3B competition American team tri als However plane/pilot combination did place 3rd F3B speed 1983 LSF International Tournament Chicago LarK g sirong spnng holds thewings tightly hatch makes connection removal easy Right Horn base burled control surfaceforatreamlining Simple linkage used minimize projecting objects Trim adjustments made atthe servo end otthe linkage Left ite strips ironed onto tne traiiing eage OT wing iop OT ins nap nunge nwp scull lower aileron surface shown allow downward movement yet resist binding Keep controm u 24 Model Aviation Above right wing root Front cable operates aileron ana rear cable operates flap Right Ballast slugs inserted wing ballast tubes through hatch removing wings making often-required loading changes simple task 2nd F3B 1984 Nationals Reno believed design has potential far beyond its present accomplishments current F3B rules emphasize speed task Speed task can potentially win since best can done regarding duration distance tie Eppler 205 airfoil chosen Europa mind quite number good airfoils also could have used Airfoil type being interesting fun experiment produces relatively small differ ence overall performance F3B competitive Sailplane events consistently high launch pilot/plane flying experience primary importance Zoom launches executed quite well Europa has launched couple powerful winches country foldinz winz Left close lookatthe radio Installation Ball links pop off fiap aileron servos roreasywing removal Right Stit foam rubber squeezed intothe hatch area keepthe ballast slugs moving around ballast must snug enough forthe Ga speed run Left small noTcnea Diocl slips under fuselage rear deck fasten canopy rubberbanu rIuu uuwn flu irrn nIgHT Left aide fin showing rudder cable horn Steel cables used control surfaces provide very tight control no slop Left right sIde fin showing position pinned rudder hinges stab drive fitting Right Closeup tail sembly design stabliator root section avoids usual diagonal cutouts trailing edge allow rudder swing date say would possible difficult deter point wing will break actually breaking Europa wing has mild sweepback Experimentation indicates sweep yields effective dihedral crease result improved turning characteristics Sweep also has psychological effect appearing moving faster whether Flaps chosen glide path control over authors usual preference spoilers done achieve com bination landing control launching aid control surface Approxi mately 100 flap produces some increase launch height amount deflec tion depends pilots launching technique other factors such wind speed ballast Full-flap deflection also useful aborted attempt Sailplane can safely dive very steep angle landed slowly launch ing area much shorter time Sailplane feature thus less working time consumed relaunch Flaps have some undesirable side ef 26 Model Aviation ianajrirui test .flying site europa utilizes state-ot-mne-art crew F3B uuugn fea1uus ommerciaIiy-avaIIabie components greatly simplify construction fin Made s though Some additional drag created hinge line amount drag produced subject consider able debate Europa have used MonoKote seals gaps minimize effect Also pitch-up effect flaps deflected severe enough mixer correct stabilizer trim necessary use electronic mixer transmitter mechanical mixer plane could used Another difficulty using flaps glide path control pan cake effect retracting flaps slow speed overcome slightly higher landing speed can used Ailerons rudder driven inde pendent servos have electronic cou pler transmitter ailerons rudder can coupled uncoupled flight An alternative would have coupled continuously simply connecting both servos aileron channel Y-harness Europa stabilator quite thin might expected create pitch-sensitive condition has proven case flight testing stabilator root section does extend aft rudder hinge line avoids usual diagonal cutout stabilator trailing edge allow rudder swing Direct-drive control cables used control surfaces done dis courage flutter developing due floppy linkages Care must taken choosing cables have close fit outer tubing slop will appear 900 bend point cables Flaps ailer ons driven about center length also lessen possibility flutter Ballast carried wing order keep fuselage small ballast tubes can hold up 56 lb ballast Filling tubes capacity would raise Europa wing loading little over F3B limit Being capable changing ballast quickly F3B important particularly decide working time avoid having remove wings time ballast changed access hatch has designed top fuselage Ballast made up x 2-in brass tubes filled lead see Callisto 82 article October 1982 Model Aviation using ballast tube always completely filled ballast ballast dowel dummy slugs held place stiff piece foam squeezed hatch area first thought Europa would good Sailplane AMA Unlimited duration events because its weight Early tried type event did particularly well Yet some well-known fliers using Sailplanes wing loadings comparable level higher quite successfully July1985 27 Left spars built-up external core straightedge weights used ensure trueness Above wing joiner tubes being fitted spars Proper wing dl hedrai sweep must estabiished spars correct wing-fuseiage alignment Roove pars soiia ana run Ins full loiner tubes completeiy installed before spars go wi paneis procedure differs usual construction methods Right Cutting foam wing cores hot wire See text source cores spar notches core used reference Foam between notches will completely removed replaced spar Photo credit bythe author duration-type events Later discov ered main problem plane simply required different piloting technique lighter ship windy conditions Europa actual ly has advantage over conventional duration designs Lighter planes hav ing add ballast match wing loadI ings Europa Europa has superior strength designed fly higher airspeeds Building lighter weight version Europa specifically duration events has also considered should make interesting Sailplane AAILERON CONTROL CABLE TUBE-y FLAP CONTROL CABLEFUBE LEFT WING ~--6 FLAP CCNTROL1 CABLE TUBE Il/3D GD NEASS WING TUNE CUP HOOE WING RETAINER CUT CORE ROOT TBOARD LEAN OR ROUT RIB TO MATCH ROE FANRID I/IN PLY ROOT RIB NNN-------\~N--- TNT - aDIAnGWa- 3/32 PLY 71 OUTRIDE WEB I/O ID CARI MOTOR TUB TUB ED 3W SPRUCE WING PIN ANCHOR BLOCKS W NO P N TUBE 3/IN LW SPRUCE ALEADING EDGE 3/IN 3/N SPRUCE TIP_________ 3/RMESIUM BALSASTABILATOR LEFT SIDE SHEET ___________ 1/IN 1/4 GPRGCE TRAILING EDGEG PF B FUSELAGE IS 3 LAYERS GE 6 UZ /50 FT 216 PLY FIBERGLASS CLOTH CANGEY TRIM LINE B AB 11W PLY SPRUI SPAN itself Construction expected modelers choosing build Europa F3B competition have reasonable amount construction experience Modelers like usually have own building techniques may actually make design modifications along way Therefore general building notes will given rather step-by-step instructions fiberglass fuselage commercially available Viking Models 2026 Spring Lake Dr Martinez CA 94553 Likewise foam wing cores available Viking can make core templates plans cut yourself standard hot wire cutter used Wing wing spar full length solid construction made spruce plywood balsa capped carbon fiber tape after installation core carbon fiber tape can eliminated substituting carbon fiber spars instead spruce spars However carbon fiber spars sometimes difficult obtain 28 Model Aviation core aft ot spar cut two pieces aid cutting ballast tube holes close-up OT tne ballast tuow nulOS made using small templates clr cular holes guides hot wire cutter Top wing showing epoxied-on carbonflbertape Control cabletubing can seen Imbedded foam availabie carbonfiber spars can used instead spruce Full-Size Plans Available. See Page 164 3 EACH2-7/82-7/H VIA PLY EXTERNAL3/B US BALSA WEBLEANG EDGENOTE 3/B VERTICAL GRAIN [ii-i BALSA WEB ENTIRE LENGTHWING DRAL OF SPANSECTON D-DSECTION C-C BALSA BLGCK WINGTIP OH N 3/B SPRSCE SPAR FOAM CORE WINS z WIDE CARBON FIBER TAPE EPOSIED ON TOP B BOTTOM OF CORE FROM THIS LOCATION TO WING ROOT WING PLAN TOP VIEWL4RALSA ANSENOTE CONTROL CABLES 1/16 PLY BALLASTNOTE FLAP HINGES LOCATES ompON LONER SURFACE OF WINGRIGHT SIDEBLOCKSiC HONN3/IA 3/H BALSAT E STOCK -WHEEL COLLAR FOR LOCAING STAB ON -I/HOD BRASS SECTION E-E TSBING iii I/IA 1/4 SPRGCE TRAILING EGGE -2B 3/B SPRUCE CARBON FIRERSPAR ________________TAFE lAG PLY 13/8 SPRUCE- EB3/B BALSA SECTION F-F'INTERNAL TORSO BRASSCGRBONV/ES TUBINGFIBER TAPESECTION B-B -I/IA PLY ROOT SECTION 5-5 RIB 3/30 BALSA HATCH COVERI/B BRASS /TUSE NOTE AILERON HINGES LOCATES ON OPPER SURFACE OF WINS AIRS ROOT FOAM CORE TEMPLATES IVI6IHIZ GRAIN BALSA CAPS TO COVER WCBARE FOAM AFTER CGTTINS SOT FLAPS 02/S AILERONS AILERONLEFTRISHT CABLEFLAPFLAPMICROBALLOON CABLEFILLER BALSA ~lIE ETI PLY S HE ETI NO SECTION A-AFOOM CARBONCORE FIBE TAPEID GIA ITOWEL SPRUCE LEADING EDGEI/IA BALSA SVEETINS 3/B PLY \\V4 BALSA5o/H3RN IOTOJNT SPRUCE FUSELAGE VIFW MN TH LOC3/H BALSA FELECTRICAL SPECIFICATIONSI/B OS BRASSTERMINAL WINS SPAN110TGBE OcLOERED WINS AREA930 55 IN I/IS I/B BALSALENGTH505 HATCH FRAMESTAB AREA114 55 INSTABILATOR DRIVE WEISHT EMPTY. 74 OZ WINS LUGGING -- liD OZ/SS FT WINS JOINTER5/IA OIA B-U/A ___IA WING PIN S/30DIA A15/AVA PLY INSERT STAB JOINTERO. 3/3001G 3-7/IA AILERON THROW. V 3/4 TO 1/4 AT TE H RUISDER ThROW. 4 AT TE JI I/O AT TEF DEFLAP THROW55 BALLAST CAP. 56 LBS NUTE- FIN SIDES COVERED /HSO FILL SOlD WITH EPOSYWITH I/IA SALSU SOWN TO GNU MICROBALLOONSFUSE TOP BUT NOT EXTENDINGTGRO8EARiS/j/ INTO FUSE SHEETINSNOT SHOWN ON SID VIEW IS TUTAL ISNESS 3/BBEFORE SHAPINGII ALSA QISHEET FUSELAGE SIDE VIEW-___ F3/H PLY 1/4LOCATN OF STAB EPLYI/B TUBECONTROL TSBINS TO/PA 006 LOCATION________________ 23HSA BALSA / SHEET SECTION H-H 1/455 SPRUCE LEADING EDGEI/IA BALSA TINSSECTION I-I spars separately constructed unit core Build completely building board except rear 3/ ply webbing wing tubes carefully align spars building MODEL AVIATION EUROPA F 3 B COMPETITION SAILPLANE DESIGNED BY TERRY EDMONDS TRACING BY JOE DEMARCO Bottom ottfle wing Just priorto gluing onthe sheeting Chord-wise seam core ballast stop plate visible plc Flaps ailerons being cut band saw Core bed underneath wing keep level goes through Taper aileron leading edge allow downward motion July1985 29 Left Slots wing hinges Ailerons hinged top surface flaps bottom surface Pm-notching hinge blocks will make alignment easier Right fin has V4-in balsa sheet core stabilator control cable tubing embedded core Left fin rudder after sheeting has applied shaped rudder made solid sheet balsa Right stabilator under construction Joiner tubing installed full-length pieces assure alignment Later stab cut left right halves board proper dihedral sweepback single length brass wing tubing fit cavities Some hollowing-out Y2 ply webbing may necessary proper fit wing tube Install rear webbing filling cavity microballoons epoxy Finally tubing can cut off A6 beyond end spars core must cut two pieces spar installed spar notches core templates refer ence whole area between notch es eventually cut out also time cut out cavities ballast tubes method cut core piece aft spar two pieces end ballast tubes perpendicular trailing edge cavities can easily cut out hot wire foam cutter Small templates tangent circles can made core pieces spar epoxied back together time Place pieces back core beds weigh down until fully cured Next carbon fiber tape can epoxied top bottom core over spars Regular pinned hinges used control surfaces requires installing balsa anchor blocks foam core intended locations Note hinges flaps bottom surface aileron hinges top Use single blocks both wing control surface also pre-notch blocks hinges making easy hinge alignment Anchor blocks horns also stalled now Install ballast tubes ballast stop plates control cable tubings dowel hook anchors cores point initial fitting wing fuselage should done Carefully align wing panels fuselage sure have equal incidence glue rear wing pin tubes anchor blocks Prepare cores installation sheeting will slightly raised portion over carbon fiber tape can corrected final-sanding sheeting top surface Glue sheeting followed leading edge trailing edge tip blocks Make final fit wing panels fuselage glue ply root ribs Sand wing shape sand down bump over carbon fiber tape smooth contour Saw out flaps ailerons band saw handy Putting wing panel lower core bed keeps level going through saw Trim raw edges install balsa caps Note leading edge ailerons has tapered gap bottom hinge line allow downward deflection Hinges horns can now fitted glue until wings have covered horns have mount ing tabs cut off epoxied directly slot anchor blocks Small holes should drilled horn base epoxy hold onto stabilator very simply made %-in balsa sheet edged spruce strips hard part sanding shape using ply root rib gauge lit tle practice can shaped accurately jointer wire tubes should installed full-length pieces later cut left right halves assure alignment Wheel collars installed front wire locking stabilator fin rear jointer wire bent slightly give some grab commonly done Fin rudder fin has -in balsa core core built up spruce edg Continued page 128 30 Model Aviation MINI-STRIPS PRECISION DIE-CUT Medium Garnet SAVES TIMEREPLACEMENTPies Garnet AND EFFORT $155SANDING BELTSAssId Water Pratt TEE ALUMINUM EXTRUSION SANDING BLOCK hi us BUFF-STUFF Sail-adhesive sand paper Luge True Seduce Went Wear Del 11 Inch $250 Handy Use22 inch $365 RUFF F SELF ADHESIVE SHEET SANDPAPER MAKE YOUR OWN SPECIAL SANDING SHAPES Na mssy glue ar dryhIR hiM Medium Fine r Flue $99 M N $699 COMPACT 10 inch HACK SAW SAWS ANYTHING ANYWHERE Saw has rugged die-casl trum cemlertuhie chip-pruel plastic Iq sad handle Receding ne P justahle B hlade gives pad walk access Cuts weed plastic m# HARDENED MUSIC WIREextra hlndes-SIS199 Safety/Preston Continued page 125 models reader Col Bill Webb found out hard way Bill flies Colum bus Aero Club field apparently has some overhead power lines skirt flying area However Bill thinks RF emission high-voltage trans mission lines caused interference radio resulted loss model follows flying Old Reliable high-quality three-channel radio good 25 glow engine good weather sunny wind five eight mph just chopped throttle make approach land lost control plane went slow lazy left turn flew power lines gripped big hand could have lodged plane tighter can see Bill included color photos accompany column called Ohio Power Company snt truck out crew said hO wiyY wires main lines ultra-high voltage ground ing damp could help talked other club members past have hit strange glitches same end field think theory interference correct wires over 2700 feet away closest point nothing like has ever happened before feel bad about loss plane worth life try retrieve previous Safety column reported result modeler trying retrieve model caught overhead power lines died under circumstances attempt such retrieval yourself Call power company Bills case will perform job themselves accept fact just lost model last sobering story before leave month couple weeks ago received phone call Kevin Stone Massachusetts modeler told about incident occurred bending A-inch music wire landing gear around %-inch-diameter hardened steel mandrel mandrel snapped struck Kevin face resulted loss eye freak accident perhaps However points out need consider wearing safety glasses both workshop out flying field Till next monthHave safe John Preston 12235 Ti/den wood Dr Rockville MD 20852 responding advertisers riention read about Model Aviation Europoa/Edmonds Continued page 30 ing pieces ply insert control cable tubing stab drive fitting must made up installed now Cut A-in slot top fuselage tail boom fit fin core position Mark top boom lies fin sides Glue balsa fin side sheeting marks up Build up rudder sand fin rudder shape Pinned hinges used rudder should fit no hinge line gap Fuselage Cut out opening top access hatch small frame con structed around inside edges opening hatch cover made out balsa sanded contour fuselage wing rod tube fuselage should have glued fitting wing fuselage Plywood spruce microballoons/epoxy mixture used additional support wing rod tube fin now glued fuselage tail boom wing panels installed making certain fin perpendicular wing may help ful also have stabilator doing Control cable tubes fuse lage should secured along entire length least much possible 128 Model Aviation r NYLON SCREWS No fancy packaging Just great selection low prices 6-32 x17/s100 Os 8-32x2MlOOsa 10-24x 1112100 sa 1O-32x2lOOsa 114-20X2_____ 120ea 1/4 20 x 3200 Os 1/4. x 4600 ea Solialler larger sizes also available Shipping Under $10 add $150 Over $10 Free SPECIAI 516 Greenway Drive London KY 40741 Dealer Inquiries welcome L APPLIED DESIGN CORPORATION 738 Pann St El SegUnds CA 90245 WICH Padded tall aAd carves Handy ta Maid Easy Use $235 Add 20% postage Send 25 cattlog i LIONS BONN Ultimate Fun Fly Competition Model Ideal Sunday Flyer Excellent OS 65 PS ptIonally slow land ing speed le enough 1st AIleron model easily framed less U hrs. balsa raft plywood construction ed full sise plans EngIne45 61 Wingspan62 Length OA54 WIng Area850 sq Weight Sf 6 Lbs Wing LoadIng15 17 ox Designed Uob Lame kit market sold satisfaction guarantee money back LIST PRICE 94 S 5995 Introductory prIce offor limIted time Prepald Continental USA Texas Residents Add 5% Sales Tax Sand Money Orders Cashiers Check Next Day Shipping Allow 2 Weeks personal checks clear Sorry no COD Curtis Model Aircraft 3002 M Canterbury Circle Sherman Texas 75090 AC 214-U936155 High-speed maneuvering can cause unsupported tubes distort interfere control Finish MonoKote recommended wood surfaces K&B paint fuselage Alternately other finishes could considered weight buildup should avoided F3B models tend relatively heavy adding unneces sary finish weight Installation flap aileron cables installed per plans servo arrangement will have close photographs Kraft KPS-24 servos used prototype because have high torque tight centering aileron flap servos in-line rudder stabilator servos across in-line servos mounted plywood tray make installation removal easier other servos rails Ball links used attach flap aileron linkage links snapped forefinger link easily unsnapped placing small flat-blade screwdriver underneath twisting Aileron differential adjusted take-off point servo wheel Flying Hand toss model few times check out control sensitivity Hook winch build up fairly large line tension before launching recom mended become familiar Europa before using flaps large degree very easy use too much flap actually decrease performance rather increase Europa can also successfully launched high-start word cau tion use heavy-duty high-start stretch minimum 12 pounds pull Europa light airplane Speed runs should first flown out ballast get feel ship Slowly add ballast find highest speed point Remember keep nose down turns avoid losing momen tum Split-S turns effective turns two practice altitude first Radio Technique/Myers Continued page 34 ations RC flying will become safer best results everything should parallel redundant transmitter batteries servos plane Well frIends readers weve covered lot ground column started ultra-simple receiver no larger thumbnail have progressed through discussion possible advan tages obtained grouping RC channels concepts safer RC system on-board sampling com puter multiple parallel redundancy doesnt exist yet Weve looked what what might tip hat John Preston have talked little philosophy hope youve enjoyed Keep writing George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Toledo/Pruss Continued page 38 already have set good track record Davey also manufactures Sport Winch Powrzoom Winch Hobby Lobby rare Sailplanes Germany Hobby Lobbys line will hard top Schulgleiter SG-38 kit masterpiece full choice woods de tailed fittings thatsells for$128 -scale has span 102 area 1627 sq m also carry Gnmau Baby Reiher all-fiberglass state-of-theart Speed Astir spans over 12 ft latter priced $680 Bob Martin showed another Two-Meter bird called Pussycat has simple straightforward construction very tractive linesdesigned both Thermal Slope Soaring MEN Model Engineering Nor walk Dwight Holley F3B World Champion 1981 Dwights basically all-wood model caused fiberglass school construction sit up take notice Dwights Gobbler avail able MEN did everything glass ships did except better has 114 July 1985 129
Edition: Model Aviation - 1985/07
Page Numbers: 22, 23, 24, 25, 26, 27, 28, 29, 30, 128, 129
NO OCR TEXT NO OCR TEXT THIS SAILPLANE conceived state-of-the-art design F3B competi tion utilizes combination Euro pean American unique features produce & highly competitive F3B machine Foam fiberglass technology used extremely strong structure can handle powerful winches having moderate empty weight unballasted wing loading range 115 oz/sq ft fiberglass fuselage foam wing cores being made commercially available nominal cost assist average modeler reproducing Sailplane should stated onset author has competed world class F3B competition American team tri als However plane/pilot combination did place 3rd F3B speed 1983 LSF International Tournament Chicago LarK g sirong spnng holds thewings tightly hatch makes connection removal easy Right Horn base burled control surfaceforatreamlining Simple linkage used minimize projecting objects Trim adjustments made atthe servo end otthe linkage Left ite strips ironed onto tne traiiing eage OT wing iop OT ins nap nunge nwp scull lower aileron surface shown allow downward movement yet resist binding Keep controm u 24 Model Aviation Above right wing root Front cable operates aileron ana rear cable operates flap Right Ballast slugs inserted wing ballast tubes through hatch removing wings making often-required loading changes simple task 2nd F3B 1984 Nationals Reno believed design has potential far beyond its present accomplishments current F3B rules emphasize speed task Speed task can potentially win since best can done regarding duration distance tie Eppler 205 airfoil chosen Europa mind quite number good airfoils also could have used Airfoil type being interesting fun experiment produces relatively small differ ence overall performance F3B competitive Sailplane events consistently high launch pilot/plane flying experience primary importance Zoom launches executed quite well Europa has launched couple powerful winches country foldinz winz Left close lookatthe radio Installation Ball links pop off fiap aileron servos roreasywing removal Right Stit foam rubber squeezed intothe hatch area keepthe ballast slugs moving around ballast must snug enough forthe Ga speed run Left small noTcnea Diocl slips under fuselage rear deck fasten canopy rubberbanu rIuu uuwn flu irrn nIgHT Left aide fin showing rudder cable horn Steel cables used control surfaces provide very tight control no slop Left right sIde fin showing position pinned rudder hinges stab drive fitting Right Closeup tail sembly design stabliator root section avoids usual diagonal cutouts trailing edge allow rudder swing date say would possible difficult deter point wing will break actually breaking Europa wing has mild sweepback Experimentation indicates sweep yields effective dihedral crease result improved turning characteristics Sweep also has psychological effect appearing moving faster whether Flaps chosen glide path control over authors usual preference spoilers done achieve com bination landing control launching aid control surface Approxi mately 100 flap produces some increase launch height amount deflec tion depends pilots launching technique other factors such wind speed ballast Full-flap deflection also useful aborted attempt Sailplane can safely dive very steep angle landed slowly launch ing area much shorter time Sailplane feature thus less working time consumed relaunch Flaps have some undesirable side ef 26 Model Aviation ianajrirui test .flying site europa utilizes state-ot-mne-art crew F3B uuugn fea1uus ommerciaIiy-avaIIabie components greatly simplify construction fin Made s though Some additional drag created hinge line amount drag produced subject consider able debate Europa have used MonoKote seals gaps minimize effect Also pitch-up effect flaps deflected severe enough mixer correct stabilizer trim necessary use electronic mixer transmitter mechanical mixer plane could used Another difficulty using flaps glide path control pan cake effect retracting flaps slow speed overcome slightly higher landing speed can used Ailerons rudder driven inde pendent servos have electronic cou pler transmitter ailerons rudder can coupled uncoupled flight An alternative would have coupled continuously simply connecting both servos aileron channel Y-harness Europa stabilator quite thin might expected create pitch-sensitive condition has proven case flight testing stabilator root section does extend aft rudder hinge line avoids usual diagonal cutout stabilator trailing edge allow rudder swing Direct-drive control cables used control surfaces done dis courage flutter developing due floppy linkages Care must taken choosing cables have close fit outer tubing slop will appear 900 bend point cables Flaps ailer ons driven about center length also lessen possibility flutter Ballast carried wing order keep fuselage small ballast tubes can hold up 56 lb ballast Filling tubes capacity would raise Europa wing loading little over F3B limit Being capable changing ballast quickly F3B important particularly decide working time avoid having remove wings time ballast changed access hatch has designed top fuselage Ballast made up x 2-in brass tubes filled lead see Callisto 82 article October 1982 Model Aviation using ballast tube always completely filled ballast ballast dowel dummy slugs held place stiff piece foam squeezed hatch area first thought Europa would good Sailplane AMA Unlimited duration events because its weight Early tried type event did particularly well Yet some well-known fliers using Sailplanes wing loadings comparable level higher quite successfully July1985 27 Left spars built-up external core straightedge weights used ensure trueness Above wing joiner tubes being fitted spars Proper wing dl hedrai sweep must estabiished spars correct wing-fuseiage alignment Roove pars soiia ana run Ins full loiner tubes completeiy installed before spars go wi paneis procedure differs usual construction methods Right Cutting foam wing cores hot wire See text source cores spar notches core used reference Foam between notches will completely removed replaced spar Photo credit bythe author duration-type events Later discov ered main problem plane simply required different piloting technique lighter ship windy conditions Europa actual ly has advantage over conventional duration designs Lighter planes hav ing add ballast match wing loadI ings Europa Europa has superior strength designed fly higher airspeeds Building lighter weight version Europa specifically duration events has also considered should make interesting Sailplane AAILERON CONTROL CABLE TUBE-y FLAP CONTROL CABLEFUBE LEFT WING ~--6 FLAP CCNTROL1 CABLE TUBE Il/3D GD NEASS WING TUNE CUP HOOE WING RETAINER CUT CORE ROOT TBOARD LEAN OR ROUT RIB TO MATCH ROE FANRID I/IN PLY ROOT RIB NNN-------\~N--- TNT - aDIAnGWa- 3/32 PLY 71 OUTRIDE WEB I/O ID CARI MOTOR TUB TUB ED 3W SPRUCE WING PIN ANCHOR BLOCKS W NO P N TUBE 3/IN LW SPRUCE ALEADING EDGE 3/IN 3/N SPRUCE TIP_________ 3/RMESIUM BALSASTABILATOR LEFT SIDE SHEET ___________ 1/IN 1/4 GPRGCE TRAILING EDGEG PF B FUSELAGE IS 3 LAYERS GE 6 UZ /50 FT 216 PLY FIBERGLASS CLOTH CANGEY TRIM LINE B AB 11W PLY SPRUI SPAN itself Construction expected modelers choosing build Europa F3B competition have reasonable amount construction experience Modelers like usually have own building techniques may actually make design modifications along way Therefore general building notes will given rather step-by-step instructions fiberglass fuselage commercially available Viking Models 2026 Spring Lake Dr Martinez CA 94553 Likewise foam wing cores available Viking can make core templates plans cut yourself standard hot wire cutter used Wing wing spar full length solid construction made spruce plywood balsa capped carbon fiber tape after installation core carbon fiber tape can eliminated substituting carbon fiber spars instead spruce spars However carbon fiber spars sometimes difficult obtain 28 Model Aviation core aft ot spar cut two pieces aid cutting ballast tube holes close-up OT tne ballast tuow nulOS made using small templates clr cular holes guides hot wire cutter Top wing showing epoxied-on carbonflbertape Control cabletubing can seen Imbedded foam availabie carbonfiber spars can used instead spruce Full-Size Plans Available. See Page 164 3 EACH2-7/82-7/H VIA PLY EXTERNAL3/B US BALSA WEBLEANG EDGENOTE 3/B VERTICAL GRAIN [ii-i BALSA WEB ENTIRE LENGTHWING DRAL OF SPANSECTON D-DSECTION C-C BALSA BLGCK WINGTIP OH N 3/B SPRSCE SPAR FOAM CORE WINS z WIDE CARBON FIBER TAPE EPOSIED ON TOP B BOTTOM OF CORE FROM THIS LOCATION TO WING ROOT WING PLAN TOP VIEWL4RALSA ANSENOTE CONTROL CABLES 1/16 PLY BALLASTNOTE FLAP HINGES LOCATES ompON LONER SURFACE OF WINGRIGHT SIDEBLOCKSiC HONN3/IA 3/H BALSAT E STOCK -WHEEL COLLAR FOR LOCAING STAB ON -I/HOD BRASS SECTION E-E TSBING iii I/IA 1/4 SPRGCE TRAILING EGGE -2B 3/B SPRUCE CARBON FIRERSPAR ________________TAFE lAG PLY 13/8 SPRUCE- EB3/B BALSA SECTION F-F'INTERNAL TORSO BRASSCGRBONV/ES TUBINGFIBER TAPESECTION B-B -I/IA PLY ROOT SECTION 5-5 RIB 3/30 BALSA HATCH COVERI/B BRASS /TUSE NOTE AILERON HINGES LOCATES ON OPPER SURFACE OF WINS AIRS ROOT FOAM CORE TEMPLATES IVI6IHIZ GRAIN BALSA CAPS TO COVER WCBARE FOAM AFTER CGTTINS SOT FLAPS 02/S AILERONS AILERONLEFTRISHT CABLEFLAPFLAPMICROBALLOON CABLEFILLER BALSA ~lIE ETI PLY S HE ETI NO SECTION A-AFOOM CARBONCORE FIBE TAPEID GIA ITOWEL SPRUCE LEADING EDGEI/IA BALSA SVEETINS 3/B PLY \\V4 BALSA5o/H3RN IOTOJNT SPRUCE FUSELAGE VIFW MN TH LOC3/H BALSA FELECTRICAL SPECIFICATIONSI/B OS BRASSTERMINAL WINS SPAN110TGBE OcLOERED WINS AREA930 55 IN I/IS I/B BALSALENGTH505 HATCH FRAMESTAB AREA114 55 INSTABILATOR DRIVE WEISHT EMPTY. 74 OZ WINS LUGGING -- liD OZ/SS FT WINS JOINTER5/IA OIA B-U/A ___IA WING PIN S/30DIA A15/AVA PLY INSERT STAB JOINTERO. 3/3001G 3-7/IA AILERON THROW. V 3/4 TO 1/4 AT TE H RUISDER ThROW. 4 AT TE JI I/O AT TEF DEFLAP THROW55 BALLAST CAP. 56 LBS NUTE- FIN SIDES COVERED /HSO FILL SOlD WITH EPOSYWITH I/IA SALSU SOWN TO GNU MICROBALLOONSFUSE TOP BUT NOT EXTENDINGTGRO8EARiS/j/ INTO FUSE SHEETINSNOT SHOWN ON SID VIEW IS TUTAL ISNESS 3/BBEFORE SHAPINGII ALSA QISHEET FUSELAGE SIDE VIEW-___ F3/H PLY 1/4LOCATN OF STAB EPLYI/B TUBECONTROL TSBINS TO/PA 006 LOCATION________________ 23HSA BALSA / SHEET SECTION H-H 1/455 SPRUCE LEADING EDGEI/IA BALSA TINSSECTION I-I spars separately constructed unit core Build completely building board except rear 3/ ply webbing wing tubes carefully align spars building MODEL AVIATION EUROPA F 3 B COMPETITION SAILPLANE DESIGNED BY TERRY EDMONDS TRACING BY JOE DEMARCO Bottom ottfle wing Just priorto gluing onthe sheeting Chord-wise seam core ballast stop plate visible plc Flaps ailerons being cut band saw Core bed underneath wing keep level goes through Taper aileron leading edge allow downward motion July1985 29 Left Slots wing hinges Ailerons hinged top surface flaps bottom surface Pm-notching hinge blocks will make alignment easier Right fin has V4-in balsa sheet core stabilator control cable tubing embedded core Left fin rudder after sheeting has applied shaped rudder made solid sheet balsa Right stabilator under construction Joiner tubing installed full-length pieces assure alignment Later stab cut left right halves board proper dihedral sweepback single length brass wing tubing fit cavities Some hollowing-out Y2 ply webbing may necessary proper fit wing tube Install rear webbing filling cavity microballoons epoxy Finally tubing can cut off A6 beyond end spars core must cut two pieces spar installed spar notches core templates refer ence whole area between notch es eventually cut out also time cut out cavities ballast tubes method cut core piece aft spar two pieces end ballast tubes perpendicular trailing edge cavities can easily cut out hot wire foam cutter Small templates tangent circles can made core pieces spar epoxied back together time Place pieces back core beds weigh down until fully cured Next carbon fiber tape can epoxied top bottom core over spars Regular pinned hinges used control surfaces requires installing balsa anchor blocks foam core intended locations Note hinges flaps bottom surface aileron hinges top Use single blocks both wing control surface also pre-notch blocks hinges making easy hinge alignment Anchor blocks horns also stalled now Install ballast tubes ballast stop plates control cable tubings dowel hook anchors cores point initial fitting wing fuselage should done Carefully align wing panels fuselage sure have equal incidence glue rear wing pin tubes anchor blocks Prepare cores installation sheeting will slightly raised portion over carbon fiber tape can corrected final-sanding sheeting top surface Glue sheeting followed leading edge trailing edge tip blocks Make final fit wing panels fuselage glue ply root ribs Sand wing shape sand down bump over carbon fiber tape smooth contour Saw out flaps ailerons band saw handy Putting wing panel lower core bed keeps level going through saw Trim raw edges install balsa caps Note leading edge ailerons has tapered gap bottom hinge line allow downward deflection Hinges horns can now fitted glue until wings have covered horns have mount ing tabs cut off epoxied directly slot anchor blocks Small holes should drilled horn base epoxy hold onto stabilator very simply made %-in balsa sheet edged spruce strips hard part sanding shape using ply root rib gauge lit tle practice can shaped accurately jointer wire tubes should installed full-length pieces later cut left right halves assure alignment Wheel collars installed front wire locking stabilator fin rear jointer wire bent slightly give some grab commonly done Fin rudder fin has -in balsa core core built up spruce edg Continued page 128 30 Model Aviation MINI-STRIPS PRECISION DIE-CUT Medium Garnet SAVES TIMEREPLACEMENTPies Garnet AND EFFORT $155SANDING BELTSAssId Water Pratt TEE ALUMINUM EXTRUSION SANDING BLOCK hi us BUFF-STUFF Sail-adhesive sand paper Luge True Seduce Went Wear Del 11 Inch $250 Handy Use22 inch $365 RUFF F SELF ADHESIVE SHEET SANDPAPER MAKE YOUR OWN SPECIAL SANDING SHAPES Na mssy glue ar dryhIR hiM Medium Fine r Flue $99 M N $699 COMPACT 10 inch HACK SAW SAWS ANYTHING ANYWHERE Saw has rugged die-casl trum cemlertuhie chip-pruel plastic Iq sad handle Receding ne P justahle B hlade gives pad walk access Cuts weed plastic m# HARDENED MUSIC WIREextra hlndes-SIS199 Safety/Preston Continued page 125 models reader Col Bill Webb found out hard way Bill flies Colum bus Aero Club field apparently has some overhead power lines skirt flying area However Bill thinks RF emission high-voltage trans mission lines caused interference radio resulted loss model follows flying Old Reliable high-quality three-channel radio good 25 glow engine good weather sunny wind five eight mph just chopped throttle make approach land lost control plane went slow lazy left turn flew power lines gripped big hand could have lodged plane tighter can see Bill included color photos accompany column called Ohio Power Company snt truck out crew said hO wiyY wires main lines ultra-high voltage ground ing damp could help talked other club members past have hit strange glitches same end field think theory interference correct wires over 2700 feet away closest point nothing like has ever happened before feel bad about loss plane worth life try retrieve previous Safety column reported result modeler trying retrieve model caught overhead power lines died under circumstances attempt such retrieval yourself Call power company Bills case will perform job themselves accept fact just lost model last sobering story before leave month couple weeks ago received phone call Kevin Stone Massachusetts modeler told about incident occurred bending A-inch music wire landing gear around %-inch-diameter hardened steel mandrel mandrel snapped struck Kevin face resulted loss eye freak accident perhaps However points out need consider wearing safety glasses both workshop out flying field Till next monthHave safe John Preston 12235 Ti/den wood Dr Rockville MD 20852 responding advertisers riention read about Model Aviation Europoa/Edmonds Continued page 30 ing pieces ply insert control cable tubing stab drive fitting must made up installed now Cut A-in slot top fuselage tail boom fit fin core position Mark top boom lies fin sides Glue balsa fin side sheeting marks up Build up rudder sand fin rudder shape Pinned hinges used rudder should fit no hinge line gap Fuselage Cut out opening top access hatch small frame con structed around inside edges opening hatch cover made out balsa sanded contour fuselage wing rod tube fuselage should have glued fitting wing fuselage Plywood spruce microballoons/epoxy mixture used additional support wing rod tube fin now glued fuselage tail boom wing panels installed making certain fin perpendicular wing may help ful also have stabilator doing Control cable tubes fuse lage should secured along entire length least much possible 128 Model Aviation r NYLON SCREWS No fancy packaging Just great selection low prices 6-32 x17/s100 Os 8-32x2MlOOsa 10-24x 1112100 sa 1O-32x2lOOsa 114-20X2_____ 120ea 1/4 20 x 3200 Os 1/4. x 4600 ea Solialler larger sizes also available Shipping Under $10 add $150 Over $10 Free SPECIAI 516 Greenway Drive London KY 40741 Dealer Inquiries welcome L APPLIED DESIGN CORPORATION 738 Pann St El SegUnds CA 90245 WICH Padded tall aAd carves Handy ta Maid Easy Use $235 Add 20% postage Send 25 cattlog i LIONS BONN Ultimate Fun Fly Competition Model Ideal Sunday Flyer Excellent OS 65 PS ptIonally slow land ing speed le enough 1st AIleron model easily framed less U hrs. balsa raft plywood construction ed full sise plans EngIne45 61 Wingspan62 Length OA54 WIng Area850 sq Weight Sf 6 Lbs Wing LoadIng15 17 ox Designed Uob Lame kit market sold satisfaction guarantee money back LIST PRICE 94 S 5995 Introductory prIce offor limIted time Prepald Continental USA Texas Residents Add 5% Sales Tax Sand Money Orders Cashiers Check Next Day Shipping Allow 2 Weeks personal checks clear Sorry no COD Curtis Model Aircraft 3002 M Canterbury Circle Sherman Texas 75090 AC 214-U936155 High-speed maneuvering can cause unsupported tubes distort interfere control Finish MonoKote recommended wood surfaces K&B paint fuselage Alternately other finishes could considered weight buildup should avoided F3B models tend relatively heavy adding unneces sary finish weight Installation flap aileron cables installed per plans servo arrangement will have close photographs Kraft KPS-24 servos used prototype because have high torque tight centering aileron flap servos in-line rudder stabilator servos across in-line servos mounted plywood tray make installation removal easier other servos rails Ball links used attach flap aileron linkage links snapped forefinger link easily unsnapped placing small flat-blade screwdriver underneath twisting Aileron differential adjusted take-off point servo wheel Flying Hand toss model few times check out control sensitivity Hook winch build up fairly large line tension before launching recom mended become familiar Europa before using flaps large degree very easy use too much flap actually decrease performance rather increase Europa can also successfully launched high-start word cau tion use heavy-duty high-start stretch minimum 12 pounds pull Europa light airplane Speed runs should first flown out ballast get feel ship Slowly add ballast find highest speed point Remember keep nose down turns avoid losing momen tum Split-S turns effective turns two practice altitude first Radio Technique/Myers Continued page 34 ations RC flying will become safer best results everything should parallel redundant transmitter batteries servos plane Well frIends readers weve covered lot ground column started ultra-simple receiver no larger thumbnail have progressed through discussion possible advan tages obtained grouping RC channels concepts safer RC system on-board sampling com puter multiple parallel redundancy doesnt exist yet Weve looked what what might tip hat John Preston have talked little philosophy hope youve enjoyed Keep writing George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Toledo/Pruss Continued page 38 already have set good track record Davey also manufactures Sport Winch Powrzoom Winch Hobby Lobby rare Sailplanes Germany Hobby Lobbys line will hard top Schulgleiter SG-38 kit masterpiece full choice woods de tailed fittings thatsells for$128 -scale has span 102 area 1627 sq m also carry Gnmau Baby Reiher all-fiberglass state-of-theart Speed Astir spans over 12 ft latter priced $680 Bob Martin showed another Two-Meter bird called Pussycat has simple straightforward construction very tractive linesdesigned both Thermal Slope Soaring MEN Model Engineering Nor walk Dwight Holley F3B World Champion 1981 Dwights basically all-wood model caused fiberglass school construction sit up take notice Dwights Gobbler avail able MEN did everything glass ships did except better has 114 July 1985 129
Edition: Model Aviation - 1985/07
Page Numbers: 22, 23, 24, 25, 26, 27, 28, 29, 30, 128, 129
NO OCR TEXT NO OCR TEXT THIS SAILPLANE conceived state-of-the-art design F3B competi tion utilizes combination Euro pean American unique features produce & highly competitive F3B machine Foam fiberglass technology used extremely strong structure can handle powerful winches having moderate empty weight unballasted wing loading range 115 oz/sq ft fiberglass fuselage foam wing cores being made commercially available nominal cost assist average modeler reproducing Sailplane should stated onset author has competed world class F3B competition American team tri als However plane/pilot combination did place 3rd F3B speed 1983 LSF International Tournament Chicago LarK g sirong spnng holds thewings tightly hatch makes connection removal easy Right Horn base burled control surfaceforatreamlining Simple linkage used minimize projecting objects Trim adjustments made atthe servo end otthe linkage Left ite strips ironed onto tne traiiing eage OT wing iop OT ins nap nunge nwp scull lower aileron surface shown allow downward movement yet resist binding Keep controm u 24 Model Aviation Above right wing root Front cable operates aileron ana rear cable operates flap Right Ballast slugs inserted wing ballast tubes through hatch removing wings making often-required loading changes simple task 2nd F3B 1984 Nationals Reno believed design has potential far beyond its present accomplishments current F3B rules emphasize speed task Speed task can potentially win since best can done regarding duration distance tie Eppler 205 airfoil chosen Europa mind quite number good airfoils also could have used Airfoil type being interesting fun experiment produces relatively small differ ence overall performance F3B competitive Sailplane events consistently high launch pilot/plane flying experience primary importance Zoom launches executed quite well Europa has launched couple powerful winches country foldinz winz Left close lookatthe radio Installation Ball links pop off fiap aileron servos roreasywing removal Right Stit foam rubber squeezed intothe hatch area keepthe ballast slugs moving around ballast must snug enough forthe Ga speed run Left small noTcnea Diocl slips under fuselage rear deck fasten canopy rubberbanu rIuu uuwn flu irrn nIgHT Left aide fin showing rudder cable horn Steel cables used control surfaces provide very tight control no slop Left right sIde fin showing position pinned rudder hinges stab drive fitting Right Closeup tail sembly design stabliator root section avoids usual diagonal cutouts trailing edge allow rudder swing date say would possible difficult deter point wing will break actually breaking Europa wing has mild sweepback Experimentation indicates sweep yields effective dihedral crease result improved turning characteristics Sweep also has psychological effect appearing moving faster whether Flaps chosen glide path control over authors usual preference spoilers done achieve com bination landing control launching aid control surface Approxi mately 100 flap produces some increase launch height amount deflec tion depends pilots launching technique other factors such wind speed ballast Full-flap deflection also useful aborted attempt Sailplane can safely dive very steep angle landed slowly launch ing area much shorter time Sailplane feature thus less working time consumed relaunch Flaps have some undesirable side ef 26 Model Aviation ianajrirui test .flying site europa utilizes state-ot-mne-art crew F3B uuugn fea1uus ommerciaIiy-avaIIabie components greatly simplify construction fin Made s though Some additional drag created hinge line amount drag produced subject consider able debate Europa have used MonoKote seals gaps minimize effect Also pitch-up effect flaps deflected severe enough mixer correct stabilizer trim necessary use electronic mixer transmitter mechanical mixer plane could used Another difficulty using flaps glide path control pan cake effect retracting flaps slow speed overcome slightly higher landing speed can used Ailerons rudder driven inde pendent servos have electronic cou pler transmitter ailerons rudder can coupled uncoupled flight An alternative would have coupled continuously simply connecting both servos aileron channel Y-harness Europa stabilator quite thin might expected create pitch-sensitive condition has proven case flight testing stabilator root section does extend aft rudder hinge line avoids usual diagonal cutout stabilator trailing edge allow rudder swing Direct-drive control cables used control surfaces done dis courage flutter developing due floppy linkages Care must taken choosing cables have close fit outer tubing slop will appear 900 bend point cables Flaps ailer ons driven about center length also lessen possibility flutter Ballast carried wing order keep fuselage small ballast tubes can hold up 56 lb ballast Filling tubes capacity would raise Europa wing loading little over F3B limit Being capable changing ballast quickly F3B important particularly decide working time avoid having remove wings time ballast changed access hatch has designed top fuselage Ballast made up x 2-in brass tubes filled lead see Callisto 82 article October 1982 Model Aviation using ballast tube always completely filled ballast ballast dowel dummy slugs held place stiff piece foam squeezed hatch area first thought Europa would good Sailplane AMA Unlimited duration events because its weight Early tried type event did particularly well Yet some well-known fliers using Sailplanes wing loadings comparable level higher quite successfully July1985 27 Left spars built-up external core straightedge weights used ensure trueness Above wing joiner tubes being fitted spars Proper wing dl hedrai sweep must estabiished spars correct wing-fuseiage alignment Roove pars soiia ana run Ins full loiner tubes completeiy installed before spars go wi paneis procedure differs usual construction methods Right Cutting foam wing cores hot wire See text source cores spar notches core used reference Foam between notches will completely removed replaced spar Photo credit bythe author duration-type events Later discov ered main problem plane simply required different piloting technique lighter ship windy conditions Europa actual ly has advantage over conventional duration designs Lighter planes hav ing add ballast match wing loadI ings Europa Europa has superior strength designed fly higher airspeeds Building lighter weight version Europa specifically duration events has also considered should make interesting Sailplane AAILERON CONTROL CABLE TUBE-y FLAP CONTROL CABLEFUBE LEFT WING ~--6 FLAP CCNTROL1 CABLE TUBE Il/3D GD NEASS WING TUNE CUP HOOE WING RETAINER CUT CORE ROOT TBOARD LEAN OR ROUT RIB TO MATCH ROE FANRID I/IN PLY ROOT RIB NNN-------\~N--- TNT - aDIAnGWa- 3/32 PLY 71 OUTRIDE WEB I/O ID CARI MOTOR TUB TUB ED 3W SPRUCE WING PIN ANCHOR BLOCKS W NO P N TUBE 3/IN LW SPRUCE ALEADING EDGE 3/IN 3/N SPRUCE TIP_________ 3/RMESIUM BALSASTABILATOR LEFT SIDE SHEET ___________ 1/IN 1/4 GPRGCE TRAILING EDGEG PF B FUSELAGE IS 3 LAYERS GE 6 UZ /50 FT 216 PLY FIBERGLASS CLOTH CANGEY TRIM LINE B AB 11W PLY SPRUI SPAN itself Construction expected modelers choosing build Europa F3B competition have reasonable amount construction experience Modelers like usually have own building techniques may actually make design modifications along way Therefore general building notes will given rather step-by-step instructions fiberglass fuselage commercially available Viking Models 2026 Spring Lake Dr Martinez CA 94553 Likewise foam wing cores available Viking can make core templates plans cut yourself standard hot wire cutter used Wing wing spar full length solid construction made spruce plywood balsa capped carbon fiber tape after installation core carbon fiber tape can eliminated substituting carbon fiber spars instead spruce spars However carbon fiber spars sometimes difficult obtain 28 Model Aviation core aft ot spar cut two pieces aid cutting ballast tube holes close-up OT tne ballast tuow nulOS made using small templates clr cular holes guides hot wire cutter Top wing showing epoxied-on carbonflbertape Control cabletubing can seen Imbedded foam availabie carbonfiber spars can used instead spruce Full-Size Plans Available. See Page 164 3 EACH2-7/82-7/H VIA PLY EXTERNAL3/B US BALSA WEBLEANG EDGENOTE 3/B VERTICAL GRAIN [ii-i BALSA WEB ENTIRE LENGTHWING DRAL OF SPANSECTON D-DSECTION C-C BALSA BLGCK WINGTIP OH N 3/B SPRSCE SPAR FOAM CORE WINS z WIDE CARBON FIBER TAPE EPOSIED ON TOP B BOTTOM OF CORE FROM THIS LOCATION TO WING ROOT WING PLAN TOP VIEWL4RALSA ANSENOTE CONTROL CABLES 1/16 PLY BALLASTNOTE FLAP HINGES LOCATES ompON LONER SURFACE OF WINGRIGHT SIDEBLOCKSiC HONN3/IA 3/H BALSAT E STOCK -WHEEL COLLAR FOR LOCAING STAB ON -I/HOD BRASS SECTION E-E TSBING iii I/IA 1/4 SPRGCE TRAILING EGGE -2B 3/B SPRUCE CARBON FIRERSPAR ________________TAFE lAG PLY 13/8 SPRUCE- EB3/B BALSA SECTION F-F'INTERNAL TORSO BRASSCGRBONV/ES TUBINGFIBER TAPESECTION B-B -I/IA PLY ROOT SECTION 5-5 RIB 3/30 BALSA HATCH COVERI/B BRASS /TUSE NOTE AILERON HINGES LOCATES ON OPPER SURFACE OF WINS AIRS ROOT FOAM CORE TEMPLATES IVI6IHIZ GRAIN BALSA CAPS TO COVER WCBARE FOAM AFTER CGTTINS SOT FLAPS 02/S AILERONS AILERONLEFTRISHT CABLEFLAPFLAPMICROBALLOON CABLEFILLER BALSA ~lIE ETI PLY S HE ETI NO SECTION A-AFOOM CARBONCORE FIBE TAPEID GIA ITOWEL SPRUCE LEADING EDGEI/IA BALSA SVEETINS 3/B PLY \\V4 BALSA5o/H3RN IOTOJNT SPRUCE FUSELAGE VIFW MN TH LOC3/H BALSA FELECTRICAL SPECIFICATIONSI/B OS BRASSTERMINAL WINS SPAN110TGBE OcLOERED WINS AREA930 55 IN I/IS I/B BALSALENGTH505 HATCH FRAMESTAB AREA114 55 INSTABILATOR DRIVE WEISHT EMPTY. 74 OZ WINS LUGGING -- liD OZ/SS FT WINS JOINTER5/IA OIA B-U/A ___IA WING PIN S/30DIA A15/AVA PLY INSERT STAB JOINTERO. 3/3001G 3-7/IA AILERON THROW. V 3/4 TO 1/4 AT TE H RUISDER ThROW. 4 AT TE JI I/O AT TEF DEFLAP THROW55 BALLAST CAP. 56 LBS NUTE- FIN SIDES COVERED /HSO FILL SOlD WITH EPOSYWITH I/IA SALSU SOWN TO GNU MICROBALLOONSFUSE TOP BUT NOT EXTENDINGTGRO8EARiS/j/ INTO FUSE SHEETINSNOT SHOWN ON SID VIEW IS TUTAL ISNESS 3/BBEFORE SHAPINGII ALSA QISHEET FUSELAGE SIDE VIEW-___ F3/H PLY 1/4LOCATN OF STAB EPLYI/B TUBECONTROL TSBINS TO/PA 006 LOCATION________________ 23HSA BALSA / SHEET SECTION H-H 1/455 SPRUCE LEADING EDGEI/IA BALSA TINSSECTION I-I spars separately constructed unit core Build completely building board except rear 3/ ply webbing wing tubes carefully align spars building MODEL AVIATION EUROPA F 3 B COMPETITION SAILPLANE DESIGNED BY TERRY EDMONDS TRACING BY JOE DEMARCO Bottom ottfle wing Just priorto gluing onthe sheeting Chord-wise seam core ballast stop plate visible plc Flaps ailerons being cut band saw Core bed underneath wing keep level goes through Taper aileron leading edge allow downward motion July1985 29 Left Slots wing hinges Ailerons hinged top surface flaps bottom surface Pm-notching hinge blocks will make alignment easier Right fin has V4-in balsa sheet core stabilator control cable tubing embedded core Left fin rudder after sheeting has applied shaped rudder made solid sheet balsa Right stabilator under construction Joiner tubing installed full-length pieces assure alignment Later stab cut left right halves board proper dihedral sweepback single length brass wing tubing fit cavities Some hollowing-out Y2 ply webbing may necessary proper fit wing tube Install rear webbing filling cavity microballoons epoxy Finally tubing can cut off A6 beyond end spars core must cut two pieces spar installed spar notches core templates refer ence whole area between notch es eventually cut out also time cut out cavities ballast tubes method cut core piece aft spar two pieces end ballast tubes perpendicular trailing edge cavities can easily cut out hot wire foam cutter Small templates tangent circles can made core pieces spar epoxied back together time Place pieces back core beds weigh down until fully cured Next carbon fiber tape can epoxied top bottom core over spars Regular pinned hinges used control surfaces requires installing balsa anchor blocks foam core intended locations Note hinges flaps bottom surface aileron hinges top Use single blocks both wing control surface also pre-notch blocks hinges making easy hinge alignment Anchor blocks horns also stalled now Install ballast tubes ballast stop plates control cable tubings dowel hook anchors cores point initial fitting wing fuselage should done Carefully align wing panels fuselage sure have equal incidence glue rear wing pin tubes anchor blocks Prepare cores installation sheeting will slightly raised portion over carbon fiber tape can corrected final-sanding sheeting top surface Glue sheeting followed leading edge trailing edge tip blocks Make final fit wing panels fuselage glue ply root ribs Sand wing shape sand down bump over carbon fiber tape smooth contour Saw out flaps ailerons band saw handy Putting wing panel lower core bed keeps level going through saw Trim raw edges install balsa caps Note leading edge ailerons has tapered gap bottom hinge line allow downward deflection Hinges horns can now fitted glue until wings have covered horns have mount ing tabs cut off epoxied directly slot anchor blocks Small holes should drilled horn base epoxy hold onto stabilator very simply made %-in balsa sheet edged spruce strips hard part sanding shape using ply root rib gauge lit tle practice can shaped accurately jointer wire tubes should installed full-length pieces later cut left right halves assure alignment Wheel collars installed front wire locking stabilator fin rear jointer wire bent slightly give some grab commonly done Fin rudder fin has -in balsa core core built up spruce edg Continued page 128 30 Model Aviation MINI-STRIPS PRECISION DIE-CUT Medium Garnet SAVES TIMEREPLACEMENTPies Garnet AND EFFORT $155SANDING BELTSAssId Water Pratt TEE ALUMINUM EXTRUSION SANDING BLOCK hi us BUFF-STUFF Sail-adhesive sand paper Luge True Seduce Went Wear Del 11 Inch $250 Handy Use22 inch $365 RUFF F SELF ADHESIVE SHEET SANDPAPER MAKE YOUR OWN SPECIAL SANDING SHAPES Na mssy glue ar dryhIR hiM Medium Fine r Flue $99 M N $699 COMPACT 10 inch HACK SAW SAWS ANYTHING ANYWHERE Saw has rugged die-casl trum cemlertuhie chip-pruel plastic Iq sad handle Receding ne P justahle B hlade gives pad walk access Cuts weed plastic m# HARDENED MUSIC WIREextra hlndes-SIS199 Safety/Preston Continued page 125 models reader Col Bill Webb found out hard way Bill flies Colum bus Aero Club field apparently has some overhead power lines skirt flying area However Bill thinks RF emission high-voltage trans mission lines caused interference radio resulted loss model follows flying Old Reliable high-quality three-channel radio good 25 glow engine good weather sunny wind five eight mph just chopped throttle make approach land lost control plane went slow lazy left turn flew power lines gripped big hand could have lodged plane tighter can see Bill included color photos accompany column called Ohio Power Company snt truck out crew said hO wiyY wires main lines ultra-high voltage ground ing damp could help talked other club members past have hit strange glitches same end field think theory interference correct wires over 2700 feet away closest point nothing like has ever happened before feel bad about loss plane worth life try retrieve previous Safety column reported result modeler trying retrieve model caught overhead power lines died under circumstances attempt such retrieval yourself Call power company Bills case will perform job themselves accept fact just lost model last sobering story before leave month couple weeks ago received phone call Kevin Stone Massachusetts modeler told about incident occurred bending A-inch music wire landing gear around %-inch-diameter hardened steel mandrel mandrel snapped struck Kevin face resulted loss eye freak accident perhaps However points out need consider wearing safety glasses both workshop out flying field Till next monthHave safe John Preston 12235 Ti/den wood Dr Rockville MD 20852 responding advertisers riention read about Model Aviation Europoa/Edmonds Continued page 30 ing pieces ply insert control cable tubing stab drive fitting must made up installed now Cut A-in slot top fuselage tail boom fit fin core position Mark top boom lies fin sides Glue balsa fin side sheeting marks up Build up rudder sand fin rudder shape Pinned hinges used rudder should fit no hinge line gap Fuselage Cut out opening top access hatch small frame con structed around inside edges opening hatch cover made out balsa sanded contour fuselage wing rod tube fuselage should have glued fitting wing fuselage Plywood spruce microballoons/epoxy mixture used additional support wing rod tube fin now glued fuselage tail boom wing panels installed making certain fin perpendicular wing may help ful also have stabilator doing Control cable tubes fuse lage should secured along entire length least much possible 128 Model Aviation r NYLON SCREWS No fancy packaging Just great selection low prices 6-32 x17/s100 Os 8-32x2MlOOsa 10-24x 1112100 sa 1O-32x2lOOsa 114-20X2_____ 120ea 1/4 20 x 3200 Os 1/4. x 4600 ea Solialler larger sizes also available Shipping Under $10 add $150 Over $10 Free SPECIAI 516 Greenway Drive London KY 40741 Dealer Inquiries welcome L APPLIED DESIGN CORPORATION 738 Pann St El SegUnds CA 90245 WICH Padded tall aAd carves Handy ta Maid Easy Use $235 Add 20% postage Send 25 cattlog i LIONS BONN Ultimate Fun Fly Competition Model Ideal Sunday Flyer Excellent OS 65 PS ptIonally slow land ing speed le enough 1st AIleron model easily framed less U hrs. balsa raft plywood construction ed full sise plans EngIne45 61 Wingspan62 Length OA54 WIng Area850 sq Weight Sf 6 Lbs Wing LoadIng15 17 ox Designed Uob Lame kit market sold satisfaction guarantee money back LIST PRICE 94 S 5995 Introductory prIce offor limIted time Prepald Continental USA Texas Residents Add 5% Sales Tax Sand Money Orders Cashiers Check Next Day Shipping Allow 2 Weeks personal checks clear Sorry no COD Curtis Model Aircraft 3002 M Canterbury Circle Sherman Texas 75090 AC 214-U936155 High-speed maneuvering can cause unsupported tubes distort interfere control Finish MonoKote recommended wood surfaces K&B paint fuselage Alternately other finishes could considered weight buildup should avoided F3B models tend relatively heavy adding unneces sary finish weight Installation flap aileron cables installed per plans servo arrangement will have close photographs Kraft KPS-24 servos used prototype because have high torque tight centering aileron flap servos in-line rudder stabilator servos across in-line servos mounted plywood tray make installation removal easier other servos rails Ball links used attach flap aileron linkage links snapped forefinger link easily unsnapped placing small flat-blade screwdriver underneath twisting Aileron differential adjusted take-off point servo wheel Flying Hand toss model few times check out control sensitivity Hook winch build up fairly large line tension before launching recom mended become familiar Europa before using flaps large degree very easy use too much flap actually decrease performance rather increase Europa can also successfully launched high-start word cau tion use heavy-duty high-start stretch minimum 12 pounds pull Europa light airplane Speed runs should first flown out ballast get feel ship Slowly add ballast find highest speed point Remember keep nose down turns avoid losing momen tum Split-S turns effective turns two practice altitude first Radio Technique/Myers Continued page 34 ations RC flying will become safer best results everything should parallel redundant transmitter batteries servos plane Well frIends readers weve covered lot ground column started ultra-simple receiver no larger thumbnail have progressed through discussion possible advan tages obtained grouping RC channels concepts safer RC system on-board sampling com puter multiple parallel redundancy doesnt exist yet Weve looked what what might tip hat John Preston have talked little philosophy hope youve enjoyed Keep writing George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Toledo/Pruss Continued page 38 already have set good track record Davey also manufactures Sport Winch Powrzoom Winch Hobby Lobby rare Sailplanes Germany Hobby Lobbys line will hard top Schulgleiter SG-38 kit masterpiece full choice woods de tailed fittings thatsells for$128 -scale has span 102 area 1627 sq m also carry Gnmau Baby Reiher all-fiberglass state-of-theart Speed Astir spans over 12 ft latter priced $680 Bob Martin showed another Two-Meter bird called Pussycat has simple straightforward construction very tractive linesdesigned both Thermal Slope Soaring MEN Model Engineering Nor walk Dwight Holley F3B World Champion 1981 Dwights basically all-wood model caused fiberglass school construction sit up take notice Dwights Gobbler avail able MEN did everything glass ships did except better has 114 July 1985 129
Edition: Model Aviation - 1985/07
Page Numbers: 22, 23, 24, 25, 26, 27, 28, 29, 30, 128, 129
NO OCR TEXT NO OCR TEXT THIS SAILPLANE conceived state-of-the-art design F3B competi tion utilizes combination Euro pean American unique features produce & highly competitive F3B machine Foam fiberglass technology used extremely strong structure can handle powerful winches having moderate empty weight unballasted wing loading range 115 oz/sq ft fiberglass fuselage foam wing cores being made commercially available nominal cost assist average modeler reproducing Sailplane should stated onset author has competed world class F3B competition American team tri als However plane/pilot combination did place 3rd F3B speed 1983 LSF International Tournament Chicago LarK g sirong spnng holds thewings tightly hatch makes connection removal easy Right Horn base burled control surfaceforatreamlining Simple linkage used minimize projecting objects Trim adjustments made atthe servo end otthe linkage Left ite strips ironed onto tne traiiing eage OT wing iop OT ins nap nunge nwp scull lower aileron surface shown allow downward movement yet resist binding Keep controm u 24 Model Aviation Above right wing root Front cable operates aileron ana rear cable operates flap Right Ballast slugs inserted wing ballast tubes through hatch removing wings making often-required loading changes simple task 2nd F3B 1984 Nationals Reno believed design has potential far beyond its present accomplishments current F3B rules emphasize speed task Speed task can potentially win since best can done regarding duration distance tie Eppler 205 airfoil chosen Europa mind quite number good airfoils also could have used Airfoil type being interesting fun experiment produces relatively small differ ence overall performance F3B competitive Sailplane events consistently high launch pilot/plane flying experience primary importance Zoom launches executed quite well Europa has launched couple powerful winches country foldinz winz Left close lookatthe radio Installation Ball links pop off fiap aileron servos roreasywing removal Right Stit foam rubber squeezed intothe hatch area keepthe ballast slugs moving around ballast must snug enough forthe Ga speed run Left small noTcnea Diocl slips under fuselage rear deck fasten canopy rubberbanu rIuu uuwn flu irrn nIgHT Left aide fin showing rudder cable horn Steel cables used control surfaces provide very tight control no slop Left right sIde fin showing position pinned rudder hinges stab drive fitting Right Closeup tail sembly design stabliator root section avoids usual diagonal cutouts trailing edge allow rudder swing date say would possible difficult deter point wing will break actually breaking Europa wing has mild sweepback Experimentation indicates sweep yields effective dihedral crease result improved turning characteristics Sweep also has psychological effect appearing moving faster whether Flaps chosen glide path control over authors usual preference spoilers done achieve com bination landing control launching aid control surface Approxi mately 100 flap produces some increase launch height amount deflec tion depends pilots launching technique other factors such wind speed ballast Full-flap deflection also useful aborted attempt Sailplane can safely dive very steep angle landed slowly launch ing area much shorter time Sailplane feature thus less working time consumed relaunch Flaps have some undesirable side ef 26 Model Aviation ianajrirui test .flying site europa utilizes state-ot-mne-art crew F3B uuugn fea1uus ommerciaIiy-avaIIabie components greatly simplify construction fin Made s though Some additional drag created hinge line amount drag produced subject consider able debate Europa have used MonoKote seals gaps minimize effect Also pitch-up effect flaps deflected severe enough mixer correct stabilizer trim necessary use electronic mixer transmitter mechanical mixer plane could used Another difficulty using flaps glide path control pan cake effect retracting flaps slow speed overcome slightly higher landing speed can used Ailerons rudder driven inde pendent servos have electronic cou pler transmitter ailerons rudder can coupled uncoupled flight An alternative would have coupled continuously simply connecting both servos aileron channel Y-harness Europa stabilator quite thin might expected create pitch-sensitive condition has proven case flight testing stabilator root section does extend aft rudder hinge line avoids usual diagonal cutout stabilator trailing edge allow rudder swing Direct-drive control cables used control surfaces done dis courage flutter developing due floppy linkages Care must taken choosing cables have close fit outer tubing slop will appear 900 bend point cables Flaps ailer ons driven about center length also lessen possibility flutter Ballast carried wing order keep fuselage small ballast tubes can hold up 56 lb ballast Filling tubes capacity would raise Europa wing loading little over F3B limit Being capable changing ballast quickly F3B important particularly decide working time avoid having remove wings time ballast changed access hatch has designed top fuselage Ballast made up x 2-in brass tubes filled lead see Callisto 82 article October 1982 Model Aviation using ballast tube always completely filled ballast ballast dowel dummy slugs held place stiff piece foam squeezed hatch area first thought Europa would good Sailplane AMA Unlimited duration events because its weight Early tried type event did particularly well Yet some well-known fliers using Sailplanes wing loadings comparable level higher quite successfully July1985 27 Left spars built-up external core straightedge weights used ensure trueness Above wing joiner tubes being fitted spars Proper wing dl hedrai sweep must estabiished spars correct wing-fuseiage alignment Roove pars soiia ana run Ins full loiner tubes completeiy installed before spars go wi paneis procedure differs usual construction methods Right Cutting foam wing cores hot wire See text source cores spar notches core used reference Foam between notches will completely removed replaced spar Photo credit bythe author duration-type events Later discov ered main problem plane simply required different piloting technique lighter ship windy conditions Europa actual ly has advantage over conventional duration designs Lighter planes hav ing add ballast match wing loadI ings Europa Europa has superior strength designed fly higher airspeeds Building lighter weight version Europa specifically duration events has also considered should make interesting Sailplane AAILERON CONTROL CABLE TUBE-y FLAP CONTROL CABLEFUBE LEFT WING ~--6 FLAP CCNTROL1 CABLE TUBE Il/3D GD NEASS WING TUNE CUP HOOE WING RETAINER CUT CORE ROOT TBOARD LEAN OR ROUT RIB TO MATCH ROE FANRID I/IN PLY ROOT RIB NNN-------\~N--- TNT - aDIAnGWa- 3/32 PLY 71 OUTRIDE WEB I/O ID CARI MOTOR TUB TUB ED 3W SPRUCE WING PIN ANCHOR BLOCKS W NO P N TUBE 3/IN LW SPRUCE ALEADING EDGE 3/IN 3/N SPRUCE TIP_________ 3/RMESIUM BALSASTABILATOR LEFT SIDE SHEET ___________ 1/IN 1/4 GPRGCE TRAILING EDGEG PF B FUSELAGE IS 3 LAYERS GE 6 UZ /50 FT 216 PLY FIBERGLASS CLOTH CANGEY TRIM LINE B AB 11W PLY SPRUI SPAN itself Construction expected modelers choosing build Europa F3B competition have reasonable amount construction experience Modelers like usually have own building techniques may actually make design modifications along way Therefore general building notes will given rather step-by-step instructions fiberglass fuselage commercially available Viking Models 2026 Spring Lake Dr Martinez CA 94553 Likewise foam wing cores available Viking can make core templates plans cut yourself standard hot wire cutter used Wing wing spar full length solid construction made spruce plywood balsa capped carbon fiber tape after installation core carbon fiber tape can eliminated substituting carbon fiber spars instead spruce spars However carbon fiber spars sometimes difficult obtain 28 Model Aviation core aft ot spar cut two pieces aid cutting ballast tube holes close-up OT tne ballast tuow nulOS made using small templates clr cular holes guides hot wire cutter Top wing showing epoxied-on carbonflbertape Control cabletubing can seen Imbedded foam availabie carbonfiber spars can used instead spruce Full-Size Plans Available. See Page 164 3 EACH2-7/82-7/H VIA PLY EXTERNAL3/B US BALSA WEBLEANG EDGENOTE 3/B VERTICAL GRAIN [ii-i BALSA WEB ENTIRE LENGTHWING DRAL OF SPANSECTON D-DSECTION C-C BALSA BLGCK WINGTIP OH N 3/B SPRSCE SPAR FOAM CORE WINS z WIDE CARBON FIBER TAPE EPOSIED ON TOP B BOTTOM OF CORE FROM THIS LOCATION TO WING ROOT WING PLAN TOP VIEWL4RALSA ANSENOTE CONTROL CABLES 1/16 PLY BALLASTNOTE FLAP HINGES LOCATES ompON LONER SURFACE OF WINGRIGHT SIDEBLOCKSiC HONN3/IA 3/H BALSAT E STOCK -WHEEL COLLAR FOR LOCAING STAB ON -I/HOD BRASS SECTION E-E TSBING iii I/IA 1/4 SPRGCE TRAILING EGGE -2B 3/B SPRUCE CARBON FIRERSPAR ________________TAFE lAG PLY 13/8 SPRUCE- EB3/B BALSA SECTION F-F'INTERNAL TORSO BRASSCGRBONV/ES TUBINGFIBER TAPESECTION B-B -I/IA PLY ROOT SECTION 5-5 RIB 3/30 BALSA HATCH COVERI/B BRASS /TUSE NOTE AILERON HINGES LOCATES ON OPPER SURFACE OF WINS AIRS ROOT FOAM CORE TEMPLATES IVI6IHIZ GRAIN BALSA CAPS TO COVER WCBARE FOAM AFTER CGTTINS SOT FLAPS 02/S AILERONS AILERONLEFTRISHT CABLEFLAPFLAPMICROBALLOON CABLEFILLER BALSA ~lIE ETI PLY S HE ETI NO SECTION A-AFOOM CARBONCORE FIBE TAPEID GIA ITOWEL SPRUCE LEADING EDGEI/IA BALSA SVEETINS 3/B PLY \\V4 BALSA5o/H3RN IOTOJNT SPRUCE FUSELAGE VIFW MN TH LOC3/H BALSA FELECTRICAL SPECIFICATIONSI/B OS BRASSTERMINAL WINS SPAN110TGBE OcLOERED WINS AREA930 55 IN I/IS I/B BALSALENGTH505 HATCH FRAMESTAB AREA114 55 INSTABILATOR DRIVE WEISHT EMPTY. 74 OZ WINS LUGGING -- liD OZ/SS FT WINS JOINTER5/IA OIA B-U/A ___IA WING PIN S/30DIA A15/AVA PLY INSERT STAB JOINTERO. 3/3001G 3-7/IA AILERON THROW. V 3/4 TO 1/4 AT TE H RUISDER ThROW. 4 AT TE JI I/O AT TEF DEFLAP THROW55 BALLAST CAP. 56 LBS NUTE- FIN SIDES COVERED /HSO FILL SOlD WITH EPOSYWITH I/IA SALSU SOWN TO GNU MICROBALLOONSFUSE TOP BUT NOT EXTENDINGTGRO8EARiS/j/ INTO FUSE SHEETINSNOT SHOWN ON SID VIEW IS TUTAL ISNESS 3/BBEFORE SHAPINGII ALSA QISHEET FUSELAGE SIDE VIEW-___ F3/H PLY 1/4LOCATN OF STAB EPLYI/B TUBECONTROL TSBINS TO/PA 006 LOCATION________________ 23HSA BALSA / SHEET SECTION H-H 1/455 SPRUCE LEADING EDGEI/IA BALSA TINSSECTION I-I spars separately constructed unit core Build completely building board except rear 3/ ply webbing wing tubes carefully align spars building MODEL AVIATION EUROPA F 3 B COMPETITION SAILPLANE DESIGNED BY TERRY EDMONDS TRACING BY JOE DEMARCO Bottom ottfle wing Just priorto gluing onthe sheeting Chord-wise seam core ballast stop plate visible plc Flaps ailerons being cut band saw Core bed underneath wing keep level goes through Taper aileron leading edge allow downward motion July1985 29 Left Slots wing hinges Ailerons hinged top surface flaps bottom surface Pm-notching hinge blocks will make alignment easier Right fin has V4-in balsa sheet core stabilator control cable tubing embedded core Left fin rudder after sheeting has applied shaped rudder made solid sheet balsa Right stabilator under construction Joiner tubing installed full-length pieces assure alignment Later stab cut left right halves board proper dihedral sweepback single length brass wing tubing fit cavities Some hollowing-out Y2 ply webbing may necessary proper fit wing tube Install rear webbing filling cavity microballoons epoxy Finally tubing can cut off A6 beyond end spars core must cut two pieces spar installed spar notches core templates refer ence whole area between notch es eventually cut out also time cut out cavities ballast tubes method cut core piece aft spar two pieces end ballast tubes perpendicular trailing edge cavities can easily cut out hot wire foam cutter Small templates tangent circles can made core pieces spar epoxied back together time Place pieces back core beds weigh down until fully cured Next carbon fiber tape can epoxied top bottom core over spars Regular pinned hinges used control surfaces requires installing balsa anchor blocks foam core intended locations Note hinges flaps bottom surface aileron hinges top Use single blocks both wing control surface also pre-notch blocks hinges making easy hinge alignment Anchor blocks horns also stalled now Install ballast tubes ballast stop plates control cable tubings dowel hook anchors cores point initial fitting wing fuselage should done Carefully align wing panels fuselage sure have equal incidence glue rear wing pin tubes anchor blocks Prepare cores installation sheeting will slightly raised portion over carbon fiber tape can corrected final-sanding sheeting top surface Glue sheeting followed leading edge trailing edge tip blocks Make final fit wing panels fuselage glue ply root ribs Sand wing shape sand down bump over carbon fiber tape smooth contour Saw out flaps ailerons band saw handy Putting wing panel lower core bed keeps level going through saw Trim raw edges install balsa caps Note leading edge ailerons has tapered gap bottom hinge line allow downward deflection Hinges horns can now fitted glue until wings have covered horns have mount ing tabs cut off epoxied directly slot anchor blocks Small holes should drilled horn base epoxy hold onto stabilator very simply made %-in balsa sheet edged spruce strips hard part sanding shape using ply root rib gauge lit tle practice can shaped accurately jointer wire tubes should installed full-length pieces later cut left right halves assure alignment Wheel collars installed front wire locking stabilator fin rear jointer wire bent slightly give some grab commonly done Fin rudder fin has -in balsa core core built up spruce edg Continued page 128 30 Model Aviation MINI-STRIPS PRECISION DIE-CUT Medium Garnet SAVES TIMEREPLACEMENTPies Garnet AND EFFORT $155SANDING BELTSAssId Water Pratt TEE ALUMINUM EXTRUSION SANDING BLOCK hi us BUFF-STUFF Sail-adhesive sand paper Luge True Seduce Went Wear Del 11 Inch $250 Handy Use22 inch $365 RUFF F SELF ADHESIVE SHEET SANDPAPER MAKE YOUR OWN SPECIAL SANDING SHAPES Na mssy glue ar dryhIR hiM Medium Fine r Flue $99 M N $699 COMPACT 10 inch HACK SAW SAWS ANYTHING ANYWHERE Saw has rugged die-casl trum cemlertuhie chip-pruel plastic Iq sad handle Receding ne P justahle B hlade gives pad walk access Cuts weed plastic m# HARDENED MUSIC WIREextra hlndes-SIS199 Safety/Preston Continued page 125 models reader Col Bill Webb found out hard way Bill flies Colum bus Aero Club field apparently has some overhead power lines skirt flying area However Bill thinks RF emission high-voltage trans mission lines caused interference radio resulted loss model follows flying Old Reliable high-quality three-channel radio good 25 glow engine good weather sunny wind five eight mph just chopped throttle make approach land lost control plane went slow lazy left turn flew power lines gripped big hand could have lodged plane tighter can see Bill included color photos accompany column called Ohio Power Company snt truck out crew said hO wiyY wires main lines ultra-high voltage ground ing damp could help talked other club members past have hit strange glitches same end field think theory interference correct wires over 2700 feet away closest point nothing like has ever happened before feel bad about loss plane worth life try retrieve previous Safety column reported result modeler trying retrieve model caught overhead power lines died under circumstances attempt such retrieval yourself Call power company Bills case will perform job themselves accept fact just lost model last sobering story before leave month couple weeks ago received phone call Kevin Stone Massachusetts modeler told about incident occurred bending A-inch music wire landing gear around %-inch-diameter hardened steel mandrel mandrel snapped struck Kevin face resulted loss eye freak accident perhaps However points out need consider wearing safety glasses both workshop out flying field Till next monthHave safe John Preston 12235 Ti/den wood Dr Rockville MD 20852 responding advertisers riention read about Model Aviation Europoa/Edmonds Continued page 30 ing pieces ply insert control cable tubing stab drive fitting must made up installed now Cut A-in slot top fuselage tail boom fit fin core position Mark top boom lies fin sides Glue balsa fin side sheeting marks up Build up rudder sand fin rudder shape Pinned hinges used rudder should fit no hinge line gap Fuselage Cut out opening top access hatch small frame con structed around inside edges opening hatch cover made out balsa sanded contour fuselage wing rod tube fuselage should have glued fitting wing fuselage Plywood spruce microballoons/epoxy mixture used additional support wing rod tube fin now glued fuselage tail boom wing panels installed making certain fin perpendicular wing may help ful also have stabilator doing Control cable tubes fuse lage should secured along entire length least much possible 128 Model Aviation r NYLON SCREWS No fancy packaging Just great selection low prices 6-32 x17/s100 Os 8-32x2MlOOsa 10-24x 1112100 sa 1O-32x2lOOsa 114-20X2_____ 120ea 1/4 20 x 3200 Os 1/4. x 4600 ea Solialler larger sizes also available Shipping Under $10 add $150 Over $10 Free SPECIAI 516 Greenway Drive London KY 40741 Dealer Inquiries welcome L APPLIED DESIGN CORPORATION 738 Pann St El SegUnds CA 90245 WICH Padded tall aAd carves Handy ta Maid Easy Use $235 Add 20% postage Send 25 cattlog i LIONS BONN Ultimate Fun Fly Competition Model Ideal Sunday Flyer Excellent OS 65 PS ptIonally slow land ing speed le enough 1st AIleron model easily framed less U hrs. balsa raft plywood construction ed full sise plans EngIne45 61 Wingspan62 Length OA54 WIng Area850 sq Weight Sf 6 Lbs Wing LoadIng15 17 ox Designed Uob Lame kit market sold satisfaction guarantee money back LIST PRICE 94 S 5995 Introductory prIce offor limIted time Prepald Continental USA Texas Residents Add 5% Sales Tax Sand Money Orders Cashiers Check Next Day Shipping Allow 2 Weeks personal checks clear Sorry no COD Curtis Model Aircraft 3002 M Canterbury Circle Sherman Texas 75090 AC 214-U936155 High-speed maneuvering can cause unsupported tubes distort interfere control Finish MonoKote recommended wood surfaces K&B paint fuselage Alternately other finishes could considered weight buildup should avoided F3B models tend relatively heavy adding unneces sary finish weight Installation flap aileron cables installed per plans servo arrangement will have close photographs Kraft KPS-24 servos used prototype because have high torque tight centering aileron flap servos in-line rudder stabilator servos across in-line servos mounted plywood tray make installation removal easier other servos rails Ball links used attach flap aileron linkage links snapped forefinger link easily unsnapped placing small flat-blade screwdriver underneath twisting Aileron differential adjusted take-off point servo wheel Flying Hand toss model few times check out control sensitivity Hook winch build up fairly large line tension before launching recom mended become familiar Europa before using flaps large degree very easy use too much flap actually decrease performance rather increase Europa can also successfully launched high-start word cau tion use heavy-duty high-start stretch minimum 12 pounds pull Europa light airplane Speed runs should first flown out ballast get feel ship Slowly add ballast find highest speed point Remember keep nose down turns avoid losing momen tum Split-S turns effective turns two practice altitude first Radio Technique/Myers Continued page 34 ations RC flying will become safer best results everything should parallel redundant transmitter batteries servos plane Well frIends readers weve covered lot ground column started ultra-simple receiver no larger thumbnail have progressed through discussion possible advan tages obtained grouping RC channels concepts safer RC system on-board sampling com puter multiple parallel redundancy doesnt exist yet Weve looked what what might tip hat John Preston have talked little philosophy hope youve enjoyed Keep writing George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Toledo/Pruss Continued page 38 already have set good track record Davey also manufactures Sport Winch Powrzoom Winch Hobby Lobby rare Sailplanes Germany Hobby Lobbys line will hard top Schulgleiter SG-38 kit masterpiece full choice woods de tailed fittings thatsells for$128 -scale has span 102 area 1627 sq m also carry Gnmau Baby Reiher all-fiberglass state-of-theart Speed Astir spans over 12 ft latter priced $680 Bob Martin showed another Two-Meter bird called Pussycat has simple straightforward construction very tractive linesdesigned both Thermal Slope Soaring MEN Model Engineering Nor walk Dwight Holley F3B World Champion 1981 Dwights basically all-wood model caused fiberglass school construction sit up take notice Dwights Gobbler avail able MEN did everything glass ships did except better has 114 July 1985 129
Edition: Model Aviation - 1985/07
Page Numbers: 22, 23, 24, 25, 26, 27, 28, 29, 30, 128, 129
NO OCR TEXT NO OCR TEXT THIS SAILPLANE conceived state-of-the-art design F3B competi tion utilizes combination Euro pean American unique features produce & highly competitive F3B machine Foam fiberglass technology used extremely strong structure can handle powerful winches having moderate empty weight unballasted wing loading range 115 oz/sq ft fiberglass fuselage foam wing cores being made commercially available nominal cost assist average modeler reproducing Sailplane should stated onset author has competed world class F3B competition American team tri als However plane/pilot combination did place 3rd F3B speed 1983 LSF International Tournament Chicago LarK g sirong spnng holds thewings tightly hatch makes connection removal easy Right Horn base burled control surfaceforatreamlining Simple linkage used minimize projecting objects Trim adjustments made atthe servo end otthe linkage Left ite strips ironed onto tne traiiing eage OT wing iop OT ins nap nunge nwp scull lower aileron surface shown allow downward movement yet resist binding Keep controm u 24 Model Aviation Above right wing root Front cable operates aileron ana rear cable operates flap Right Ballast slugs inserted wing ballast tubes through hatch removing wings making often-required loading changes simple task 2nd F3B 1984 Nationals Reno believed design has potential far beyond its present accomplishments current F3B rules emphasize speed task Speed task can potentially win since best can done regarding duration distance tie Eppler 205 airfoil chosen Europa mind quite number good airfoils also could have used Airfoil type being interesting fun experiment produces relatively small differ ence overall performance F3B competitive Sailplane events consistently high launch pilot/plane flying experience primary importance Zoom launches executed quite well Europa has launched couple powerful winches country foldinz winz Left close lookatthe radio Installation Ball links pop off fiap aileron servos roreasywing removal Right Stit foam rubber squeezed intothe hatch area keepthe ballast slugs moving around ballast must snug enough forthe Ga speed run Left small noTcnea Diocl slips under fuselage rear deck fasten canopy rubberbanu rIuu uuwn flu irrn nIgHT Left aide fin showing rudder cable horn Steel cables used control surfaces provide very tight control no slop Left right sIde fin showing position pinned rudder hinges stab drive fitting Right Closeup tail sembly design stabliator root section avoids usual diagonal cutouts trailing edge allow rudder swing date say would possible difficult deter point wing will break actually breaking Europa wing has mild sweepback Experimentation indicates sweep yields effective dihedral crease result improved turning characteristics Sweep also has psychological effect appearing moving faster whether Flaps chosen glide path control over authors usual preference spoilers done achieve com bination landing control launching aid control surface Approxi mately 100 flap produces some increase launch height amount deflec tion depends pilots launching technique other factors such wind speed ballast Full-flap deflection also useful aborted attempt Sailplane can safely dive very steep angle landed slowly launch ing area much shorter time Sailplane feature thus less working time consumed relaunch Flaps have some undesirable side ef 26 Model Aviation ianajrirui test .flying site europa utilizes state-ot-mne-art crew F3B uuugn fea1uus ommerciaIiy-avaIIabie components greatly simplify construction fin Made s though Some additional drag created hinge line amount drag produced subject consider able debate Europa have used MonoKote seals gaps minimize effect Also pitch-up effect flaps deflected severe enough mixer correct stabilizer trim necessary use electronic mixer transmitter mechanical mixer plane could used Another difficulty using flaps glide path control pan cake effect retracting flaps slow speed overcome slightly higher landing speed can used Ailerons rudder driven inde pendent servos have electronic cou pler transmitter ailerons rudder can coupled uncoupled flight An alternative would have coupled continuously simply connecting both servos aileron channel Y-harness Europa stabilator quite thin might expected create pitch-sensitive condition has proven case flight testing stabilator root section does extend aft rudder hinge line avoids usual diagonal cutout stabilator trailing edge allow rudder swing Direct-drive control cables used control surfaces done dis courage flutter developing due floppy linkages Care must taken choosing cables have close fit outer tubing slop will appear 900 bend point cables Flaps ailer ons driven about center length also lessen possibility flutter Ballast carried wing order keep fuselage small ballast tubes can hold up 56 lb ballast Filling tubes capacity would raise Europa wing loading little over F3B limit Being capable changing ballast quickly F3B important particularly decide working time avoid having remove wings time ballast changed access hatch has designed top fuselage Ballast made up x 2-in brass tubes filled lead see Callisto 82 article October 1982 Model Aviation using ballast tube always completely filled ballast ballast dowel dummy slugs held place stiff piece foam squeezed hatch area first thought Europa would good Sailplane AMA Unlimited duration events because its weight Early tried type event did particularly well Yet some well-known fliers using Sailplanes wing loadings comparable level higher quite successfully July1985 27 Left spars built-up external core straightedge weights used ensure trueness Above wing joiner tubes being fitted spars Proper wing dl hedrai sweep must estabiished spars correct wing-fuseiage alignment Roove pars soiia ana run Ins full loiner tubes completeiy installed before spars go wi paneis procedure differs usual construction methods Right Cutting foam wing cores hot wire See text source cores spar notches core used reference Foam between notches will completely removed replaced spar Photo credit bythe author duration-type events Later discov ered main problem plane simply required different piloting technique lighter ship windy conditions Europa actual ly has advantage over conventional duration designs Lighter planes hav ing add ballast match wing loadI ings Europa Europa has superior strength designed fly higher airspeeds Building lighter weight version Europa specifically duration events has also considered should make interesting Sailplane AAILERON CONTROL CABLE TUBE-y FLAP CONTROL CABLEFUBE LEFT WING ~--6 FLAP CCNTROL1 CABLE TUBE Il/3D GD NEASS WING TUNE CUP HOOE WING RETAINER CUT CORE ROOT TBOARD LEAN OR ROUT RIB TO MATCH ROE FANRID I/IN PLY ROOT RIB NNN-------\~N--- TNT - aDIAnGWa- 3/32 PLY 71 OUTRIDE WEB I/O ID CARI MOTOR TUB TUB ED 3W SPRUCE WING PIN ANCHOR BLOCKS W NO P N TUBE 3/IN LW SPRUCE ALEADING EDGE 3/IN 3/N SPRUCE TIP_________ 3/RMESIUM BALSASTABILATOR LEFT SIDE SHEET ___________ 1/IN 1/4 GPRGCE TRAILING EDGEG PF B FUSELAGE IS 3 LAYERS GE 6 UZ /50 FT 216 PLY FIBERGLASS CLOTH CANGEY TRIM LINE B AB 11W PLY SPRUI SPAN itself Construction expected modelers choosing build Europa F3B competition have reasonable amount construction experience Modelers like usually have own building techniques may actually make design modifications along way Therefore general building notes will given rather step-by-step instructions fiberglass fuselage commercially available Viking Models 2026 Spring Lake Dr Martinez CA 94553 Likewise foam wing cores available Viking can make core templates plans cut yourself standard hot wire cutter used Wing wing spar full length solid construction made spruce plywood balsa capped carbon fiber tape after installation core carbon fiber tape can eliminated substituting carbon fiber spars instead spruce spars However carbon fiber spars sometimes difficult obtain 28 Model Aviation core aft ot spar cut two pieces aid cutting ballast tube holes close-up OT tne ballast tuow nulOS made using small templates clr cular holes guides hot wire cutter Top wing showing epoxied-on carbonflbertape Control cabletubing can seen Imbedded foam availabie carbonfiber spars can used instead spruce Full-Size Plans Available. See Page 164 3 EACH2-7/82-7/H VIA PLY EXTERNAL3/B US BALSA WEBLEANG EDGENOTE 3/B VERTICAL GRAIN [ii-i BALSA WEB ENTIRE LENGTHWING DRAL OF SPANSECTON D-DSECTION C-C BALSA BLGCK WINGTIP OH N 3/B SPRSCE SPAR FOAM CORE WINS z WIDE CARBON FIBER TAPE EPOSIED ON TOP B BOTTOM OF CORE FROM THIS LOCATION TO WING ROOT WING PLAN TOP VIEWL4RALSA ANSENOTE CONTROL CABLES 1/16 PLY BALLASTNOTE FLAP HINGES LOCATES ompON LONER SURFACE OF WINGRIGHT SIDEBLOCKSiC HONN3/IA 3/H BALSAT E STOCK -WHEEL COLLAR FOR LOCAING STAB ON -I/HOD BRASS SECTION E-E TSBING iii I/IA 1/4 SPRGCE TRAILING EGGE -2B 3/B SPRUCE CARBON FIRERSPAR ________________TAFE lAG PLY 13/8 SPRUCE- EB3/B BALSA SECTION F-F'INTERNAL TORSO BRASSCGRBONV/ES TUBINGFIBER TAPESECTION B-B -I/IA PLY ROOT SECTION 5-5 RIB 3/30 BALSA HATCH COVERI/B BRASS /TUSE NOTE AILERON HINGES LOCATES ON OPPER SURFACE OF WINS AIRS ROOT FOAM CORE TEMPLATES IVI6IHIZ GRAIN BALSA CAPS TO COVER WCBARE FOAM AFTER CGTTINS SOT FLAPS 02/S AILERONS AILERONLEFTRISHT CABLEFLAPFLAPMICROBALLOON CABLEFILLER BALSA ~lIE ETI PLY S HE ETI NO SECTION A-AFOOM CARBONCORE FIBE TAPEID GIA ITOWEL SPRUCE LEADING EDGEI/IA BALSA SVEETINS 3/B PLY \\V4 BALSA5o/H3RN IOTOJNT SPRUCE FUSELAGE VIFW MN TH LOC3/H BALSA FELECTRICAL SPECIFICATIONSI/B OS BRASSTERMINAL WINS SPAN110TGBE OcLOERED WINS AREA930 55 IN I/IS I/B BALSALENGTH505 HATCH FRAMESTAB AREA114 55 INSTABILATOR DRIVE WEISHT EMPTY. 74 OZ WINS LUGGING -- liD OZ/SS FT WINS JOINTER5/IA OIA B-U/A ___IA WING PIN S/30DIA A15/AVA PLY INSERT STAB JOINTERO. 3/3001G 3-7/IA AILERON THROW. V 3/4 TO 1/4 AT TE H RUISDER ThROW. 4 AT TE JI I/O AT TEF DEFLAP THROW55 BALLAST CAP. 56 LBS NUTE- FIN SIDES COVERED /HSO FILL SOlD WITH EPOSYWITH I/IA SALSU SOWN TO GNU MICROBALLOONSFUSE TOP BUT NOT EXTENDINGTGRO8EARiS/j/ INTO FUSE SHEETINSNOT SHOWN ON SID VIEW IS TUTAL ISNESS 3/BBEFORE SHAPINGII ALSA QISHEET FUSELAGE SIDE VIEW-___ F3/H PLY 1/4LOCATN OF STAB EPLYI/B TUBECONTROL TSBINS TO/PA 006 LOCATION________________ 23HSA BALSA / SHEET SECTION H-H 1/455 SPRUCE LEADING EDGEI/IA BALSA TINSSECTION I-I spars separately constructed unit core Build completely building board except rear 3/ ply webbing wing tubes carefully align spars building MODEL AVIATION EUROPA F 3 B COMPETITION SAILPLANE DESIGNED BY TERRY EDMONDS TRACING BY JOE DEMARCO Bottom ottfle wing Just priorto gluing onthe sheeting Chord-wise seam core ballast stop plate visible plc Flaps ailerons being cut band saw Core bed underneath wing keep level goes through Taper aileron leading edge allow downward motion July1985 29 Left Slots wing hinges Ailerons hinged top surface flaps bottom surface Pm-notching hinge blocks will make alignment easier Right fin has V4-in balsa sheet core stabilator control cable tubing embedded core Left fin rudder after sheeting has applied shaped rudder made solid sheet balsa Right stabilator under construction Joiner tubing installed full-length pieces assure alignment Later stab cut left right halves board proper dihedral sweepback single length brass wing tubing fit cavities Some hollowing-out Y2 ply webbing may necessary proper fit wing tube Install rear webbing filling cavity microballoons epoxy Finally tubing can cut off A6 beyond end spars core must cut two pieces spar installed spar notches core templates refer ence whole area between notch es eventually cut out also time cut out cavities ballast tubes method cut core piece aft spar two pieces end ballast tubes perpendicular trailing edge cavities can easily cut out hot wire foam cutter Small templates tangent circles can made core pieces spar epoxied back together time Place pieces back core beds weigh down until fully cured Next carbon fiber tape can epoxied top bottom core over spars Regular pinned hinges used control surfaces requires installing balsa anchor blocks foam core intended locations Note hinges flaps bottom surface aileron hinges top Use single blocks both wing control surface also pre-notch blocks hinges making easy hinge alignment Anchor blocks horns also stalled now Install ballast tubes ballast stop plates control cable tubings dowel hook anchors cores point initial fitting wing fuselage should done Carefully align wing panels fuselage sure have equal incidence glue rear wing pin tubes anchor blocks Prepare cores installation sheeting will slightly raised portion over carbon fiber tape can corrected final-sanding sheeting top surface Glue sheeting followed leading edge trailing edge tip blocks Make final fit wing panels fuselage glue ply root ribs Sand wing shape sand down bump over carbon fiber tape smooth contour Saw out flaps ailerons band saw handy Putting wing panel lower core bed keeps level going through saw Trim raw edges install balsa caps Note leading edge ailerons has tapered gap bottom hinge line allow downward deflection Hinges horns can now fitted glue until wings have covered horns have mount ing tabs cut off epoxied directly slot anchor blocks Small holes should drilled horn base epoxy hold onto stabilator very simply made %-in balsa sheet edged spruce strips hard part sanding shape using ply root rib gauge lit tle practice can shaped accurately jointer wire tubes should installed full-length pieces later cut left right halves assure alignment Wheel collars installed front wire locking stabilator fin rear jointer wire bent slightly give some grab commonly done Fin rudder fin has -in balsa core core built up spruce edg Continued page 128 30 Model Aviation MINI-STRIPS PRECISION DIE-CUT Medium Garnet SAVES TIMEREPLACEMENTPies Garnet AND EFFORT $155SANDING BELTSAssId Water Pratt TEE ALUMINUM EXTRUSION SANDING BLOCK hi us BUFF-STUFF Sail-adhesive sand paper Luge True Seduce Went Wear Del 11 Inch $250 Handy Use22 inch $365 RUFF F SELF ADHESIVE SHEET SANDPAPER MAKE YOUR OWN SPECIAL SANDING SHAPES Na mssy glue ar dryhIR hiM Medium Fine r Flue $99 M N $699 COMPACT 10 inch HACK SAW SAWS ANYTHING ANYWHERE Saw has rugged die-casl trum cemlertuhie chip-pruel plastic Iq sad handle Receding ne P justahle B hlade gives pad walk access Cuts weed plastic m# HARDENED MUSIC WIREextra hlndes-SIS199 Safety/Preston Continued page 125 models reader Col Bill Webb found out hard way Bill flies Colum bus Aero Club field apparently has some overhead power lines skirt flying area However Bill thinks RF emission high-voltage trans mission lines caused interference radio resulted loss model follows flying Old Reliable high-quality three-channel radio good 25 glow engine good weather sunny wind five eight mph just chopped throttle make approach land lost control plane went slow lazy left turn flew power lines gripped big hand could have lodged plane tighter can see Bill included color photos accompany column called Ohio Power Company snt truck out crew said hO wiyY wires main lines ultra-high voltage ground ing damp could help talked other club members past have hit strange glitches same end field think theory interference correct wires over 2700 feet away closest point nothing like has ever happened before feel bad about loss plane worth life try retrieve previous Safety column reported result modeler trying retrieve model caught overhead power lines died under circumstances attempt such retrieval yourself Call power company Bills case will perform job themselves accept fact just lost model last sobering story before leave month couple weeks ago received phone call Kevin Stone Massachusetts modeler told about incident occurred bending A-inch music wire landing gear around %-inch-diameter hardened steel mandrel mandrel snapped struck Kevin face resulted loss eye freak accident perhaps However points out need consider wearing safety glasses both workshop out flying field Till next monthHave safe John Preston 12235 Ti/den wood Dr Rockville MD 20852 responding advertisers riention read about Model Aviation Europoa/Edmonds Continued page 30 ing pieces ply insert control cable tubing stab drive fitting must made up installed now Cut A-in slot top fuselage tail boom fit fin core position Mark top boom lies fin sides Glue balsa fin side sheeting marks up Build up rudder sand fin rudder shape Pinned hinges used rudder should fit no hinge line gap Fuselage Cut out opening top access hatch small frame con structed around inside edges opening hatch cover made out balsa sanded contour fuselage wing rod tube fuselage should have glued fitting wing fuselage Plywood spruce microballoons/epoxy mixture used additional support wing rod tube fin now glued fuselage tail boom wing panels installed making certain fin perpendicular wing may help ful also have stabilator doing Control cable tubes fuse lage should secured along entire length least much possible 128 Model Aviation r NYLON SCREWS No fancy packaging Just great selection low prices 6-32 x17/s100 Os 8-32x2MlOOsa 10-24x 1112100 sa 1O-32x2lOOsa 114-20X2_____ 120ea 1/4 20 x 3200 Os 1/4. x 4600 ea Solialler larger sizes also available Shipping Under $10 add $150 Over $10 Free SPECIAI 516 Greenway Drive London KY 40741 Dealer Inquiries welcome L APPLIED DESIGN CORPORATION 738 Pann St El SegUnds CA 90245 WICH Padded tall aAd carves Handy ta Maid Easy Use $235 Add 20% postage Send 25 cattlog i LIONS BONN Ultimate Fun Fly Competition Model Ideal Sunday Flyer Excellent OS 65 PS ptIonally slow land ing speed le enough 1st AIleron model easily framed less U hrs. balsa raft plywood construction ed full sise plans EngIne45 61 Wingspan62 Length OA54 WIng Area850 sq Weight Sf 6 Lbs Wing LoadIng15 17 ox Designed Uob Lame kit market sold satisfaction guarantee money back LIST PRICE 94 S 5995 Introductory prIce offor limIted time Prepald Continental USA Texas Residents Add 5% Sales Tax Sand Money Orders Cashiers Check Next Day Shipping Allow 2 Weeks personal checks clear Sorry no COD Curtis Model Aircraft 3002 M Canterbury Circle Sherman Texas 75090 AC 214-U936155 High-speed maneuvering can cause unsupported tubes distort interfere control Finish MonoKote recommended wood surfaces K&B paint fuselage Alternately other finishes could considered weight buildup should avoided F3B models tend relatively heavy adding unneces sary finish weight Installation flap aileron cables installed per plans servo arrangement will have close photographs Kraft KPS-24 servos used prototype because have high torque tight centering aileron flap servos in-line rudder stabilator servos across in-line servos mounted plywood tray make installation removal easier other servos rails Ball links used attach flap aileron linkage links snapped forefinger link easily unsnapped placing small flat-blade screwdriver underneath twisting Aileron differential adjusted take-off point servo wheel Flying Hand toss model few times check out control sensitivity Hook winch build up fairly large line tension before launching recom mended become familiar Europa before using flaps large degree very easy use too much flap actually decrease performance rather increase Europa can also successfully launched high-start word cau tion use heavy-duty high-start stretch minimum 12 pounds pull Europa light airplane Speed runs should first flown out ballast get feel ship Slowly add ballast find highest speed point Remember keep nose down turns avoid losing momen tum Split-S turns effective turns two practice altitude first Radio Technique/Myers Continued page 34 ations RC flying will become safer best results everything should parallel redundant transmitter batteries servos plane Well frIends readers weve covered lot ground column started ultra-simple receiver no larger thumbnail have progressed through discussion possible advan tages obtained grouping RC channels concepts safer RC system on-board sampling com puter multiple parallel redundancy doesnt exist yet Weve looked what what might tip hat John Preston have talked little philosophy hope youve enjoyed Keep writing George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Toledo/Pruss Continued page 38 already have set good track record Davey also manufactures Sport Winch Powrzoom Winch Hobby Lobby rare Sailplanes Germany Hobby Lobbys line will hard top Schulgleiter SG-38 kit masterpiece full choice woods de tailed fittings thatsells for$128 -scale has span 102 area 1627 sq m also carry Gnmau Baby Reiher all-fiberglass state-of-theart Speed Astir spans over 12 ft latter priced $680 Bob Martin showed another Two-Meter bird called Pussycat has simple straightforward construction very tractive linesdesigned both Thermal Slope Soaring MEN Model Engineering Nor walk Dwight Holley F3B World Champion 1981 Dwights basically all-wood model caused fiberglass school construction sit up take notice Dwights Gobbler avail able MEN did everything glass ships did except better has 114 July 1985 129
Edition: Model Aviation - 1985/07
Page Numbers: 22, 23, 24, 25, 26, 27, 28, 29, 30, 128, 129
NO OCR TEXT NO OCR TEXT THIS SAILPLANE conceived state-of-the-art design F3B competi tion utilizes combination Euro pean American unique features produce & highly competitive F3B machine Foam fiberglass technology used extremely strong structure can handle powerful winches having moderate empty weight unballasted wing loading range 115 oz/sq ft fiberglass fuselage foam wing cores being made commercially available nominal cost assist average modeler reproducing Sailplane should stated onset author has competed world class F3B competition American team tri als However plane/pilot combination did place 3rd F3B speed 1983 LSF International Tournament Chicago LarK g sirong spnng holds thewings tightly hatch makes connection removal easy Right Horn base burled control surfaceforatreamlining Simple linkage used minimize projecting objects Trim adjustments made atthe servo end otthe linkage Left ite strips ironed onto tne traiiing eage OT wing iop OT ins nap nunge nwp scull lower aileron surface shown allow downward movement yet resist binding Keep controm u 24 Model Aviation Above right wing root Front cable operates aileron ana rear cable operates flap Right Ballast slugs inserted wing ballast tubes through hatch removing wings making often-required loading changes simple task 2nd F3B 1984 Nationals Reno believed design has potential far beyond its present accomplishments current F3B rules emphasize speed task Speed task can potentially win since best can done regarding duration distance tie Eppler 205 airfoil chosen Europa mind quite number good airfoils also could have used Airfoil type being interesting fun experiment produces relatively small differ ence overall performance F3B competitive Sailplane events consistently high launch pilot/plane flying experience primary importance Zoom launches executed quite well Europa has launched couple powerful winches country foldinz winz Left close lookatthe radio Installation Ball links pop off fiap aileron servos roreasywing removal Right Stit foam rubber squeezed intothe hatch area keepthe ballast slugs moving around ballast must snug enough forthe Ga speed run Left small noTcnea Diocl slips under fuselage rear deck fasten canopy rubberbanu rIuu uuwn flu irrn nIgHT Left aide fin showing rudder cable horn Steel cables used control surfaces provide very tight control no slop Left right sIde fin showing position pinned rudder hinges stab drive fitting Right Closeup tail sembly design stabliator root section avoids usual diagonal cutouts trailing edge allow rudder swing date say would possible difficult deter point wing will break actually breaking Europa wing has mild sweepback Experimentation indicates sweep yields effective dihedral crease result improved turning characteristics Sweep also has psychological effect appearing moving faster whether Flaps chosen glide path control over authors usual preference spoilers done achieve com bination landing control launching aid control surface Approxi mately 100 flap produces some increase launch height amount deflec tion depends pilots launching technique other factors such wind speed ballast Full-flap deflection also useful aborted attempt Sailplane can safely dive very steep angle landed slowly launch ing area much shorter time Sailplane feature thus less working time consumed relaunch Flaps have some undesirable side ef 26 Model Aviation ianajrirui test .flying site europa utilizes state-ot-mne-art crew F3B uuugn fea1uus ommerciaIiy-avaIIabie components greatly simplify construction fin Made s though Some additional drag created hinge line amount drag produced subject consider able debate Europa have used MonoKote seals gaps minimize effect Also pitch-up effect flaps deflected severe enough mixer correct stabilizer trim necessary use electronic mixer transmitter mechanical mixer plane could used Another difficulty using flaps glide path control pan cake effect retracting flaps slow speed overcome slightly higher landing speed can used Ailerons rudder driven inde pendent servos have electronic cou pler transmitter ailerons rudder can coupled uncoupled flight An alternative would have coupled continuously simply connecting both servos aileron channel Y-harness Europa stabilator quite thin might expected create pitch-sensitive condition has proven case flight testing stabilator root section does extend aft rudder hinge line avoids usual diagonal cutout stabilator trailing edge allow rudder swing Direct-drive control cables used control surfaces done dis courage flutter developing due floppy linkages Care must taken choosing cables have close fit outer tubing slop will appear 900 bend point cables Flaps ailer ons driven about center length also lessen possibility flutter Ballast carried wing order keep fuselage small ballast tubes can hold up 56 lb ballast Filling tubes capacity would raise Europa wing loading little over F3B limit Being capable changing ballast quickly F3B important particularly decide working time avoid having remove wings time ballast changed access hatch has designed top fuselage Ballast made up x 2-in brass tubes filled lead see Callisto 82 article October 1982 Model Aviation using ballast tube always completely filled ballast ballast dowel dummy slugs held place stiff piece foam squeezed hatch area first thought Europa would good Sailplane AMA Unlimited duration events because its weight Early tried type event did particularly well Yet some well-known fliers using Sailplanes wing loadings comparable level higher quite successfully July1985 27 Left spars built-up external core straightedge weights used ensure trueness Above wing joiner tubes being fitted spars Proper wing dl hedrai sweep must estabiished spars correct wing-fuseiage alignment Roove pars soiia ana run Ins full loiner tubes completeiy installed before spars go wi paneis procedure differs usual construction methods Right Cutting foam wing cores hot wire See text source cores spar notches core used reference Foam between notches will completely removed replaced spar Photo credit bythe author duration-type events Later discov ered main problem plane simply required different piloting technique lighter ship windy conditions Europa actual ly has advantage over conventional duration designs Lighter planes hav ing add ballast match wing loadI ings Europa Europa has superior strength designed fly higher airspeeds Building lighter weight version Europa specifically duration events has also considered should make interesting Sailplane AAILERON CONTROL CABLE TUBE-y FLAP CONTROL CABLEFUBE LEFT WING ~--6 FLAP CCNTROL1 CABLE TUBE Il/3D GD NEASS WING TUNE CUP HOOE WING RETAINER CUT CORE ROOT TBOARD LEAN OR ROUT RIB TO MATCH ROE FANRID I/IN PLY ROOT RIB NNN-------\~N--- TNT - aDIAnGWa- 3/32 PLY 71 OUTRIDE WEB I/O ID CARI MOTOR TUB TUB ED 3W SPRUCE WING PIN ANCHOR BLOCKS W NO P N TUBE 3/IN LW SPRUCE ALEADING EDGE 3/IN 3/N SPRUCE TIP_________ 3/RMESIUM BALSASTABILATOR LEFT SIDE SHEET ___________ 1/IN 1/4 GPRGCE TRAILING EDGEG PF B FUSELAGE IS 3 LAYERS GE 6 UZ /50 FT 216 PLY FIBERGLASS CLOTH CANGEY TRIM LINE B AB 11W PLY SPRUI SPAN itself Construction expected modelers choosing build Europa F3B competition have reasonable amount construction experience Modelers like usually have own building techniques may actually make design modifications along way Therefore general building notes will given rather step-by-step instructions fiberglass fuselage commercially available Viking Models 2026 Spring Lake Dr Martinez CA 94553 Likewise foam wing cores available Viking can make core templates plans cut yourself standard hot wire cutter used Wing wing spar full length solid construction made spruce plywood balsa capped carbon fiber tape after installation core carbon fiber tape can eliminated substituting carbon fiber spars instead spruce spars However carbon fiber spars sometimes difficult obtain 28 Model Aviation core aft ot spar cut two pieces aid cutting ballast tube holes close-up OT tne ballast tuow nulOS made using small templates clr cular holes guides hot wire cutter Top wing showing epoxied-on carbonflbertape Control cabletubing can seen Imbedded foam availabie carbonfiber spars can used instead spruce Full-Size Plans Available. See Page 164 3 EACH2-7/82-7/H VIA PLY EXTERNAL3/B US BALSA WEBLEANG EDGENOTE 3/B VERTICAL GRAIN [ii-i BALSA WEB ENTIRE LENGTHWING DRAL OF SPANSECTON D-DSECTION C-C BALSA BLGCK WINGTIP OH N 3/B SPRSCE SPAR FOAM CORE WINS z WIDE CARBON FIBER TAPE EPOSIED ON TOP B BOTTOM OF CORE FROM THIS LOCATION TO WING ROOT WING PLAN TOP VIEWL4RALSA ANSENOTE CONTROL CABLES 1/16 PLY BALLASTNOTE FLAP HINGES LOCATES ompON LONER SURFACE OF WINGRIGHT SIDEBLOCKSiC HONN3/IA 3/H BALSAT E STOCK -WHEEL COLLAR FOR LOCAING STAB ON -I/HOD BRASS SECTION E-E TSBING iii I/IA 1/4 SPRGCE TRAILING EGGE -2B 3/B SPRUCE CARBON FIRERSPAR ________________TAFE lAG PLY 13/8 SPRUCE- EB3/B BALSA SECTION F-F'INTERNAL TORSO BRASSCGRBONV/ES TUBINGFIBER TAPESECTION B-B -I/IA PLY ROOT SECTION 5-5 RIB 3/30 BALSA HATCH COVERI/B BRASS /TUSE NOTE AILERON HINGES LOCATES ON OPPER SURFACE OF WINS AIRS ROOT FOAM CORE TEMPLATES IVI6IHIZ GRAIN BALSA CAPS TO COVER WCBARE FOAM AFTER CGTTINS SOT FLAPS 02/S AILERONS AILERONLEFTRISHT CABLEFLAPFLAPMICROBALLOON CABLEFILLER BALSA ~lIE ETI PLY S HE ETI NO SECTION A-AFOOM CARBONCORE FIBE TAPEID GIA ITOWEL SPRUCE LEADING EDGEI/IA BALSA SVEETINS 3/B PLY \\V4 BALSA5o/H3RN IOTOJNT SPRUCE FUSELAGE VIFW MN TH LOC3/H BALSA FELECTRICAL SPECIFICATIONSI/B OS BRASSTERMINAL WINS SPAN110TGBE OcLOERED WINS AREA930 55 IN I/IS I/B BALSALENGTH505 HATCH FRAMESTAB AREA114 55 INSTABILATOR DRIVE WEISHT EMPTY. 74 OZ WINS LUGGING -- liD OZ/SS FT WINS JOINTER5/IA OIA B-U/A ___IA WING PIN S/30DIA A15/AVA PLY INSERT STAB JOINTERO. 3/3001G 3-7/IA AILERON THROW. V 3/4 TO 1/4 AT TE H RUISDER ThROW. 4 AT TE JI I/O AT TEF DEFLAP THROW55 BALLAST CAP. 56 LBS NUTE- FIN SIDES COVERED /HSO FILL SOlD WITH EPOSYWITH I/IA SALSU SOWN TO GNU MICROBALLOONSFUSE TOP BUT NOT EXTENDINGTGRO8EARiS/j/ INTO FUSE SHEETINSNOT SHOWN ON SID VIEW IS TUTAL ISNESS 3/BBEFORE SHAPINGII ALSA QISHEET FUSELAGE SIDE VIEW-___ F3/H PLY 1/4LOCATN OF STAB EPLYI/B TUBECONTROL TSBINS TO/PA 006 LOCATION________________ 23HSA BALSA / SHEET SECTION H-H 1/455 SPRUCE LEADING EDGEI/IA BALSA TINSSECTION I-I spars separately constructed unit core Build completely building board except rear 3/ ply webbing wing tubes carefully align spars building MODEL AVIATION EUROPA F 3 B COMPETITION SAILPLANE DESIGNED BY TERRY EDMONDS TRACING BY JOE DEMARCO Bottom ottfle wing Just priorto gluing onthe sheeting Chord-wise seam core ballast stop plate visible plc Flaps ailerons being cut band saw Core bed underneath wing keep level goes through Taper aileron leading edge allow downward motion July1985 29 Left Slots wing hinges Ailerons hinged top surface flaps bottom surface Pm-notching hinge blocks will make alignment easier Right fin has V4-in balsa sheet core stabilator control cable tubing embedded core Left fin rudder after sheeting has applied shaped rudder made solid sheet balsa Right stabilator under construction Joiner tubing installed full-length pieces assure alignment Later stab cut left right halves board proper dihedral sweepback single length brass wing tubing fit cavities Some hollowing-out Y2 ply webbing may necessary proper fit wing tube Install rear webbing filling cavity microballoons epoxy Finally tubing can cut off A6 beyond end spars core must cut two pieces spar installed spar notches core templates refer ence whole area between notch es eventually cut out also time cut out cavities ballast tubes method cut core piece aft spar two pieces end ballast tubes perpendicular trailing edge cavities can easily cut out hot wire foam cutter Small templates tangent circles can made core pieces spar epoxied back together time Place pieces back core beds weigh down until fully cured Next carbon fiber tape can epoxied top bottom core over spars Regular pinned hinges used control surfaces requires installing balsa anchor blocks foam core intended locations Note hinges flaps bottom surface aileron hinges top Use single blocks both wing control surface also pre-notch blocks hinges making easy hinge alignment Anchor blocks horns also stalled now Install ballast tubes ballast stop plates control cable tubings dowel hook anchors cores point initial fitting wing fuselage should done Carefully align wing panels fuselage sure have equal incidence glue rear wing pin tubes anchor blocks Prepare cores installation sheeting will slightly raised portion over carbon fiber tape can corrected final-sanding sheeting top surface Glue sheeting followed leading edge trailing edge tip blocks Make final fit wing panels fuselage glue ply root ribs Sand wing shape sand down bump over carbon fiber tape smooth contour Saw out flaps ailerons band saw handy Putting wing panel lower core bed keeps level going through saw Trim raw edges install balsa caps Note leading edge ailerons has tapered gap bottom hinge line allow downward deflection Hinges horns can now fitted glue until wings have covered horns have mount ing tabs cut off epoxied directly slot anchor blocks Small holes should drilled horn base epoxy hold onto stabilator very simply made %-in balsa sheet edged spruce strips hard part sanding shape using ply root rib gauge lit tle practice can shaped accurately jointer wire tubes should installed full-length pieces later cut left right halves assure alignment Wheel collars installed front wire locking stabilator fin rear jointer wire bent slightly give some grab commonly done Fin rudder fin has -in balsa core core built up spruce edg Continued page 128 30 Model Aviation MINI-STRIPS PRECISION DIE-CUT Medium Garnet SAVES TIMEREPLACEMENTPies Garnet AND EFFORT $155SANDING BELTSAssId Water Pratt TEE ALUMINUM EXTRUSION SANDING BLOCK hi us BUFF-STUFF Sail-adhesive sand paper Luge True Seduce Went Wear Del 11 Inch $250 Handy Use22 inch $365 RUFF F SELF ADHESIVE SHEET SANDPAPER MAKE YOUR OWN SPECIAL SANDING SHAPES Na mssy glue ar dryhIR hiM Medium Fine r Flue $99 M N $699 COMPACT 10 inch HACK SAW SAWS ANYTHING ANYWHERE Saw has rugged die-casl trum cemlertuhie chip-pruel plastic Iq sad handle Receding ne P justahle B hlade gives pad walk access Cuts weed plastic m# HARDENED MUSIC WIREextra hlndes-SIS199 Safety/Preston Continued page 125 models reader Col Bill Webb found out hard way Bill flies Colum bus Aero Club field apparently has some overhead power lines skirt flying area However Bill thinks RF emission high-voltage trans mission lines caused interference radio resulted loss model follows flying Old Reliable high-quality three-channel radio good 25 glow engine good weather sunny wind five eight mph just chopped throttle make approach land lost control plane went slow lazy left turn flew power lines gripped big hand could have lodged plane tighter can see Bill included color photos accompany column called Ohio Power Company snt truck out crew said hO wiyY wires main lines ultra-high voltage ground ing damp could help talked other club members past have hit strange glitches same end field think theory interference correct wires over 2700 feet away closest point nothing like has ever happened before feel bad about loss plane worth life try retrieve previous Safety column reported result modeler trying retrieve model caught overhead power lines died under circumstances attempt such retrieval yourself Call power company Bills case will perform job themselves accept fact just lost model last sobering story before leave month couple weeks ago received phone call Kevin Stone Massachusetts modeler told about incident occurred bending A-inch music wire landing gear around %-inch-diameter hardened steel mandrel mandrel snapped struck Kevin face resulted loss eye freak accident perhaps However points out need consider wearing safety glasses both workshop out flying field Till next monthHave safe John Preston 12235 Ti/den wood Dr Rockville MD 20852 responding advertisers riention read about Model Aviation Europoa/Edmonds Continued page 30 ing pieces ply insert control cable tubing stab drive fitting must made up installed now Cut A-in slot top fuselage tail boom fit fin core position Mark top boom lies fin sides Glue balsa fin side sheeting marks up Build up rudder sand fin rudder shape Pinned hinges used rudder should fit no hinge line gap Fuselage Cut out opening top access hatch small frame con structed around inside edges opening hatch cover made out balsa sanded contour fuselage wing rod tube fuselage should have glued fitting wing fuselage Plywood spruce microballoons/epoxy mixture used additional support wing rod tube fin now glued fuselage tail boom wing panels installed making certain fin perpendicular wing may help ful also have stabilator doing Control cable tubes fuse lage should secured along entire length least much possible 128 Model Aviation r NYLON SCREWS No fancy packaging Just great selection low prices 6-32 x17/s100 Os 8-32x2MlOOsa 10-24x 1112100 sa 1O-32x2lOOsa 114-20X2_____ 120ea 1/4 20 x 3200 Os 1/4. x 4600 ea Solialler larger sizes also available Shipping Under $10 add $150 Over $10 Free SPECIAI 516 Greenway Drive London KY 40741 Dealer Inquiries welcome L APPLIED DESIGN CORPORATION 738 Pann St El SegUnds CA 90245 WICH Padded tall aAd carves Handy ta Maid Easy Use $235 Add 20% postage Send 25 cattlog i LIONS BONN Ultimate Fun Fly Competition Model Ideal Sunday Flyer Excellent OS 65 PS ptIonally slow land ing speed le enough 1st AIleron model easily framed less U hrs. balsa raft plywood construction ed full sise plans EngIne45 61 Wingspan62 Length OA54 WIng Area850 sq Weight Sf 6 Lbs Wing LoadIng15 17 ox Designed Uob Lame kit market sold satisfaction guarantee money back LIST PRICE 94 S 5995 Introductory prIce offor limIted time Prepald Continental USA Texas Residents Add 5% Sales Tax Sand Money Orders Cashiers Check Next Day Shipping Allow 2 Weeks personal checks clear Sorry no COD Curtis Model Aircraft 3002 M Canterbury Circle Sherman Texas 75090 AC 214-U936155 High-speed maneuvering can cause unsupported tubes distort interfere control Finish MonoKote recommended wood surfaces K&B paint fuselage Alternately other finishes could considered weight buildup should avoided F3B models tend relatively heavy adding unneces sary finish weight Installation flap aileron cables installed per plans servo arrangement will have close photographs Kraft KPS-24 servos used prototype because have high torque tight centering aileron flap servos in-line rudder stabilator servos across in-line servos mounted plywood tray make installation removal easier other servos rails Ball links used attach flap aileron linkage links snapped forefinger link easily unsnapped placing small flat-blade screwdriver underneath twisting Aileron differential adjusted take-off point servo wheel Flying Hand toss model few times check out control sensitivity Hook winch build up fairly large line tension before launching recom mended become familiar Europa before using flaps large degree very easy use too much flap actually decrease performance rather increase Europa can also successfully launched high-start word cau tion use heavy-duty high-start stretch minimum 12 pounds pull Europa light airplane Speed runs should first flown out ballast get feel ship Slowly add ballast find highest speed point Remember keep nose down turns avoid losing momen tum Split-S turns effective turns two practice altitude first Radio Technique/Myers Continued page 34 ations RC flying will become safer best results everything should parallel redundant transmitter batteries servos plane Well frIends readers weve covered lot ground column started ultra-simple receiver no larger thumbnail have progressed through discussion possible advan tages obtained grouping RC channels concepts safer RC system on-board sampling com puter multiple parallel redundancy doesnt exist yet Weve looked what what might tip hat John Preston have talked little philosophy hope youve enjoyed Keep writing George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Toledo/Pruss Continued page 38 already have set good track record Davey also manufactures Sport Winch Powrzoom Winch Hobby Lobby rare Sailplanes Germany Hobby Lobbys line will hard top Schulgleiter SG-38 kit masterpiece full choice woods de tailed fittings thatsells for$128 -scale has span 102 area 1627 sq m also carry Gnmau Baby Reiher all-fiberglass state-of-theart Speed Astir spans over 12 ft latter priced $680 Bob Martin showed another Two-Meter bird called Pussycat has simple straightforward construction very tractive linesdesigned both Thermal Slope Soaring MEN Model Engineering Nor walk Dwight Holley F3B World Champion 1981 Dwights basically all-wood model caused fiberglass school construction sit up take notice Dwights Gobbler avail able MEN did everything glass ships did except better has 114 July 1985 129
Edition: Model Aviation - 1985/07
Page Numbers: 22, 23, 24, 25, 26, 27, 28, 29, 30, 128, 129
NO OCR TEXT NO OCR TEXT THIS SAILPLANE conceived state-of-the-art design F3B competi tion utilizes combination Euro pean American unique features produce & highly competitive F3B machine Foam fiberglass technology used extremely strong structure can handle powerful winches having moderate empty weight unballasted wing loading range 115 oz/sq ft fiberglass fuselage foam wing cores being made commercially available nominal cost assist average modeler reproducing Sailplane should stated onset author has competed world class F3B competition American team tri als However plane/pilot combination did place 3rd F3B speed 1983 LSF International Tournament Chicago LarK g sirong spnng holds thewings tightly hatch makes connection removal easy Right Horn base burled control surfaceforatreamlining Simple linkage used minimize projecting objects Trim adjustments made atthe servo end otthe linkage Left ite strips ironed onto tne traiiing eage OT wing iop OT ins nap nunge nwp scull lower aileron surface shown allow downward movement yet resist binding Keep controm u 24 Model Aviation Above right wing root Front cable operates aileron ana rear cable operates flap Right Ballast slugs inserted wing ballast tubes through hatch removing wings making often-required loading changes simple task 2nd F3B 1984 Nationals Reno believed design has potential far beyond its present accomplishments current F3B rules emphasize speed task Speed task can potentially win since best can done regarding duration distance tie Eppler 205 airfoil chosen Europa mind quite number good airfoils also could have used Airfoil type being interesting fun experiment produces relatively small differ ence overall performance F3B competitive Sailplane events consistently high launch pilot/plane flying experience primary importance Zoom launches executed quite well Europa has launched couple powerful winches country foldinz winz Left close lookatthe radio Installation Ball links pop off fiap aileron servos roreasywing removal Right Stit foam rubber squeezed intothe hatch area keepthe ballast slugs moving around ballast must snug enough forthe Ga speed run Left small noTcnea Diocl slips under fuselage rear deck fasten canopy rubberbanu rIuu uuwn flu irrn nIgHT Left aide fin showing rudder cable horn Steel cables used control surfaces provide very tight control no slop Left right sIde fin showing position pinned rudder hinges stab drive fitting Right Closeup tail sembly design stabliator root section avoids usual diagonal cutouts trailing edge allow rudder swing date say would possible difficult deter point wing will break actually breaking Europa wing has mild sweepback Experimentation indicates sweep yields effective dihedral crease result improved turning characteristics Sweep also has psychological effect appearing moving faster whether Flaps chosen glide path control over authors usual preference spoilers done achieve com bination landing control launching aid control surface Approxi mately 100 flap produces some increase launch height amount deflec tion depends pilots launching technique other factors such wind speed ballast Full-flap deflection also useful aborted attempt Sailplane can safely dive very steep angle landed slowly launch ing area much shorter time Sailplane feature thus less working time consumed relaunch Flaps have some undesirable side ef 26 Model Aviation ianajrirui test .flying site europa utilizes state-ot-mne-art crew F3B uuugn fea1uus ommerciaIiy-avaIIabie components greatly simplify construction fin Made s though Some additional drag created hinge line amount drag produced subject consider able debate Europa have used MonoKote seals gaps minimize effect Also pitch-up effect flaps deflected severe enough mixer correct stabilizer trim necessary use electronic mixer transmitter mechanical mixer plane could used Another difficulty using flaps glide path control pan cake effect retracting flaps slow speed overcome slightly higher landing speed can used Ailerons rudder driven inde pendent servos have electronic cou pler transmitter ailerons rudder can coupled uncoupled flight An alternative would have coupled continuously simply connecting both servos aileron channel Y-harness Europa stabilator quite thin might expected create pitch-sensitive condition has proven case flight testing stabilator root section does extend aft rudder hinge line avoids usual diagonal cutout stabilator trailing edge allow rudder swing Direct-drive control cables used control surfaces done dis courage flutter developing due floppy linkages Care must taken choosing cables have close fit outer tubing slop will appear 900 bend point cables Flaps ailer ons driven about center length also lessen possibility flutter Ballast carried wing order keep fuselage small ballast tubes can hold up 56 lb ballast Filling tubes capacity would raise Europa wing loading little over F3B limit Being capable changing ballast quickly F3B important particularly decide working time avoid having remove wings time ballast changed access hatch has designed top fuselage Ballast made up x 2-in brass tubes filled lead see Callisto 82 article October 1982 Model Aviation using ballast tube always completely filled ballast ballast dowel dummy slugs held place stiff piece foam squeezed hatch area first thought Europa would good Sailplane AMA Unlimited duration events because its weight Early tried type event did particularly well Yet some well-known fliers using Sailplanes wing loadings comparable level higher quite successfully July1985 27 Left spars built-up external core straightedge weights used ensure trueness Above wing joiner tubes being fitted spars Proper wing dl hedrai sweep must estabiished spars correct wing-fuseiage alignment Roove pars soiia ana run Ins full loiner tubes completeiy installed before spars go wi paneis procedure differs usual construction methods Right Cutting foam wing cores hot wire See text source cores spar notches core used reference Foam between notches will completely removed replaced spar Photo credit bythe author duration-type events Later discov ered main problem plane simply required different piloting technique lighter ship windy conditions Europa actual ly has advantage over conventional duration designs Lighter planes hav ing add ballast match wing loadI ings Europa Europa has superior strength designed fly higher airspeeds Building lighter weight version Europa specifically duration events has also considered should make interesting Sailplane AAILERON CONTROL CABLE TUBE-y FLAP CONTROL CABLEFUBE LEFT WING ~--6 FLAP CCNTROL1 CABLE TUBE Il/3D GD NEASS WING TUNE CUP HOOE WING RETAINER CUT CORE ROOT TBOARD LEAN OR ROUT RIB TO MATCH ROE FANRID I/IN PLY ROOT RIB NNN-------\~N--- TNT - aDIAnGWa- 3/32 PLY 71 OUTRIDE WEB I/O ID CARI MOTOR TUB TUB ED 3W SPRUCE WING PIN ANCHOR BLOCKS W NO P N TUBE 3/IN LW SPRUCE ALEADING EDGE 3/IN 3/N SPRUCE TIP_________ 3/RMESIUM BALSASTABILATOR LEFT SIDE SHEET ___________ 1/IN 1/4 GPRGCE TRAILING EDGEG PF B FUSELAGE IS 3 LAYERS GE 6 UZ /50 FT 216 PLY FIBERGLASS CLOTH CANGEY TRIM LINE B AB 11W PLY SPRUI SPAN itself Construction expected modelers choosing build Europa F3B competition have reasonable amount construction experience Modelers like usually have own building techniques may actually make design modifications along way Therefore general building notes will given rather step-by-step instructions fiberglass fuselage commercially available Viking Models 2026 Spring Lake Dr Martinez CA 94553 Likewise foam wing cores available Viking can make core templates plans cut yourself standard hot wire cutter used Wing wing spar full length solid construction made spruce plywood balsa capped carbon fiber tape after installation core carbon fiber tape can eliminated substituting carbon fiber spars instead spruce spars However carbon fiber spars sometimes difficult obtain 28 Model Aviation core aft ot spar cut two pieces aid cutting ballast tube holes close-up OT tne ballast tuow nulOS made using small templates clr cular holes guides hot wire cutter Top wing showing epoxied-on carbonflbertape Control cabletubing can seen Imbedded foam availabie carbonfiber spars can used instead spruce Full-Size Plans Available. See Page 164 3 EACH2-7/82-7/H VIA PLY EXTERNAL3/B US BALSA WEBLEANG EDGENOTE 3/B VERTICAL GRAIN [ii-i BALSA WEB ENTIRE LENGTHWING DRAL OF SPANSECTON D-DSECTION C-C BALSA BLGCK WINGTIP OH N 3/B SPRSCE SPAR FOAM CORE WINS z WIDE CARBON FIBER TAPE EPOSIED ON TOP B BOTTOM OF CORE FROM THIS LOCATION TO WING ROOT WING PLAN TOP VIEWL4RALSA ANSENOTE CONTROL CABLES 1/16 PLY BALLASTNOTE FLAP HINGES LOCATES ompON LONER SURFACE OF WINGRIGHT SIDEBLOCKSiC HONN3/IA 3/H BALSAT E STOCK -WHEEL COLLAR FOR LOCAING STAB ON -I/HOD BRASS SECTION E-E TSBING iii I/IA 1/4 SPRGCE TRAILING EGGE -2B 3/B SPRUCE CARBON FIRERSPAR ________________TAFE lAG PLY 13/8 SPRUCE- EB3/B BALSA SECTION F-F'INTERNAL TORSO BRASSCGRBONV/ES TUBINGFIBER TAPESECTION B-B -I/IA PLY ROOT SECTION 5-5 RIB 3/30 BALSA HATCH COVERI/B BRASS /TUSE NOTE AILERON HINGES LOCATES ON OPPER SURFACE OF WINS AIRS ROOT FOAM CORE TEMPLATES IVI6IHIZ GRAIN BALSA CAPS TO COVER WCBARE FOAM AFTER CGTTINS SOT FLAPS 02/S AILERONS AILERONLEFTRISHT CABLEFLAPFLAPMICROBALLOON CABLEFILLER BALSA ~lIE ETI PLY S HE ETI NO SECTION A-AFOOM CARBONCORE FIBE TAPEID GIA ITOWEL SPRUCE LEADING EDGEI/IA BALSA SVEETINS 3/B PLY \\V4 BALSA5o/H3RN IOTOJNT SPRUCE FUSELAGE VIFW MN TH LOC3/H BALSA FELECTRICAL SPECIFICATIONSI/B OS BRASSTERMINAL WINS SPAN110TGBE OcLOERED WINS AREA930 55 IN I/IS I/B BALSALENGTH505 HATCH FRAMESTAB AREA114 55 INSTABILATOR DRIVE WEISHT EMPTY. 74 OZ WINS LUGGING -- liD OZ/SS FT WINS JOINTER5/IA OIA B-U/A ___IA WING PIN S/30DIA A15/AVA PLY INSERT STAB JOINTERO. 3/3001G 3-7/IA AILERON THROW. V 3/4 TO 1/4 AT TE H RUISDER ThROW. 4 AT TE JI I/O AT TEF DEFLAP THROW55 BALLAST CAP. 56 LBS NUTE- FIN SIDES COVERED /HSO FILL SOlD WITH EPOSYWITH I/IA SALSU SOWN TO GNU MICROBALLOONSFUSE TOP BUT NOT EXTENDINGTGRO8EARiS/j/ INTO FUSE SHEETINSNOT SHOWN ON SID VIEW IS TUTAL ISNESS 3/BBEFORE SHAPINGII ALSA QISHEET FUSELAGE SIDE VIEW-___ F3/H PLY 1/4LOCATN OF STAB EPLYI/B TUBECONTROL TSBINS TO/PA 006 LOCATION________________ 23HSA BALSA / SHEET SECTION H-H 1/455 SPRUCE LEADING EDGEI/IA BALSA TINSSECTION I-I spars separately constructed unit core Build completely building board except rear 3/ ply webbing wing tubes carefully align spars building MODEL AVIATION EUROPA F 3 B COMPETITION SAILPLANE DESIGNED BY TERRY EDMONDS TRACING BY JOE DEMARCO Bottom ottfle wing Just priorto gluing onthe sheeting Chord-wise seam core ballast stop plate visible plc Flaps ailerons being cut band saw Core bed underneath wing keep level goes through Taper aileron leading edge allow downward motion July1985 29 Left Slots wing hinges Ailerons hinged top surface flaps bottom surface Pm-notching hinge blocks will make alignment easier Right fin has V4-in balsa sheet core stabilator control cable tubing embedded core Left fin rudder after sheeting has applied shaped rudder made solid sheet balsa Right stabilator under construction Joiner tubing installed full-length pieces assure alignment Later stab cut left right halves board proper dihedral sweepback single length brass wing tubing fit cavities Some hollowing-out Y2 ply webbing may necessary proper fit wing tube Install rear webbing filling cavity microballoons epoxy Finally tubing can cut off A6 beyond end spars core must cut two pieces spar installed spar notches core templates refer ence whole area between notch es eventually cut out also time cut out cavities ballast tubes method cut core piece aft spar two pieces end ballast tubes perpendicular trailing edge cavities can easily cut out hot wire foam cutter Small templates tangent circles can made core pieces spar epoxied back together time Place pieces back core beds weigh down until fully cured Next carbon fiber tape can epoxied top bottom core over spars Regular pinned hinges used control surfaces requires installing balsa anchor blocks foam core intended locations Note hinges flaps bottom surface aileron hinges top Use single blocks both wing control surface also pre-notch blocks hinges making easy hinge alignment Anchor blocks horns also stalled now Install ballast tubes ballast stop plates control cable tubings dowel hook anchors cores point initial fitting wing fuselage should done Carefully align wing panels fuselage sure have equal incidence glue rear wing pin tubes anchor blocks Prepare cores installation sheeting will slightly raised portion over carbon fiber tape can corrected final-sanding sheeting top surface Glue sheeting followed leading edge trailing edge tip blocks Make final fit wing panels fuselage glue ply root ribs Sand wing shape sand down bump over carbon fiber tape smooth contour Saw out flaps ailerons band saw handy Putting wing panel lower core bed keeps level going through saw Trim raw edges install balsa caps Note leading edge ailerons has tapered gap bottom hinge line allow downward deflection Hinges horns can now fitted glue until wings have covered horns have mount ing tabs cut off epoxied directly slot anchor blocks Small holes should drilled horn base epoxy hold onto stabilator very simply made %-in balsa sheet edged spruce strips hard part sanding shape using ply root rib gauge lit tle practice can shaped accurately jointer wire tubes should installed full-length pieces later cut left right halves assure alignment Wheel collars installed front wire locking stabilator fin rear jointer wire bent slightly give some grab commonly done Fin rudder fin has -in balsa core core built up spruce edg Continued page 128 30 Model Aviation MINI-STRIPS PRECISION DIE-CUT Medium Garnet SAVES TIMEREPLACEMENTPies Garnet AND EFFORT $155SANDING BELTSAssId Water Pratt TEE ALUMINUM EXTRUSION SANDING BLOCK hi us BUFF-STUFF Sail-adhesive sand paper Luge True Seduce Went Wear Del 11 Inch $250 Handy Use22 inch $365 RUFF F SELF ADHESIVE SHEET SANDPAPER MAKE YOUR OWN SPECIAL SANDING SHAPES Na mssy glue ar dryhIR hiM Medium Fine r Flue $99 M N $699 COMPACT 10 inch HACK SAW SAWS ANYTHING ANYWHERE Saw has rugged die-casl trum cemlertuhie chip-pruel plastic Iq sad handle Receding ne P justahle B hlade gives pad walk access Cuts weed plastic m# HARDENED MUSIC WIREextra hlndes-SIS199 Safety/Preston Continued page 125 models reader Col Bill Webb found out hard way Bill flies Colum bus Aero Club field apparently has some overhead power lines skirt flying area However Bill thinks RF emission high-voltage trans mission lines caused interference radio resulted loss model follows flying Old Reliable high-quality three-channel radio good 25 glow engine good weather sunny wind five eight mph just chopped throttle make approach land lost control plane went slow lazy left turn flew power lines gripped big hand could have lodged plane tighter can see Bill included color photos accompany column called Ohio Power Company snt truck out crew said hO wiyY wires main lines ultra-high voltage ground ing damp could help talked other club members past have hit strange glitches same end field think theory interference correct wires over 2700 feet away closest point nothing like has ever happened before feel bad about loss plane worth life try retrieve previous Safety column reported result modeler trying retrieve model caught overhead power lines died under circumstances attempt such retrieval yourself Call power company Bills case will perform job themselves accept fact just lost model last sobering story before leave month couple weeks ago received phone call Kevin Stone Massachusetts modeler told about incident occurred bending A-inch music wire landing gear around %-inch-diameter hardened steel mandrel mandrel snapped struck Kevin face resulted loss eye freak accident perhaps However points out need consider wearing safety glasses both workshop out flying field Till next monthHave safe John Preston 12235 Ti/den wood Dr Rockville MD 20852 responding advertisers riention read about Model Aviation Europoa/Edmonds Continued page 30 ing pieces ply insert control cable tubing stab drive fitting must made up installed now Cut A-in slot top fuselage tail boom fit fin core position Mark top boom lies fin sides Glue balsa fin side sheeting marks up Build up rudder sand fin rudder shape Pinned hinges used rudder should fit no hinge line gap Fuselage Cut out opening top access hatch small frame con structed around inside edges opening hatch cover made out balsa sanded contour fuselage wing rod tube fuselage should have glued fitting wing fuselage Plywood spruce microballoons/epoxy mixture used additional support wing rod tube fin now glued fuselage tail boom wing panels installed making certain fin perpendicular wing may help ful also have stabilator doing Control cable tubes fuse lage should secured along entire length least much possible 128 Model Aviation r NYLON SCREWS No fancy packaging Just great selection low prices 6-32 x17/s100 Os 8-32x2MlOOsa 10-24x 1112100 sa 1O-32x2lOOsa 114-20X2_____ 120ea 1/4 20 x 3200 Os 1/4. x 4600 ea Solialler larger sizes also available Shipping Under $10 add $150 Over $10 Free SPECIAI 516 Greenway Drive London KY 40741 Dealer Inquiries welcome L APPLIED DESIGN CORPORATION 738 Pann St El SegUnds CA 90245 WICH Padded tall aAd carves Handy ta Maid Easy Use $235 Add 20% postage Send 25 cattlog i LIONS BONN Ultimate Fun Fly Competition Model Ideal Sunday Flyer Excellent OS 65 PS ptIonally slow land ing speed le enough 1st AIleron model easily framed less U hrs. balsa raft plywood construction ed full sise plans EngIne45 61 Wingspan62 Length OA54 WIng Area850 sq Weight Sf 6 Lbs Wing LoadIng15 17 ox Designed Uob Lame kit market sold satisfaction guarantee money back LIST PRICE 94 S 5995 Introductory prIce offor limIted time Prepald Continental USA Texas Residents Add 5% Sales Tax Sand Money Orders Cashiers Check Next Day Shipping Allow 2 Weeks personal checks clear Sorry no COD Curtis Model Aircraft 3002 M Canterbury Circle Sherman Texas 75090 AC 214-U936155 High-speed maneuvering can cause unsupported tubes distort interfere control Finish MonoKote recommended wood surfaces K&B paint fuselage Alternately other finishes could considered weight buildup should avoided F3B models tend relatively heavy adding unneces sary finish weight Installation flap aileron cables installed per plans servo arrangement will have close photographs Kraft KPS-24 servos used prototype because have high torque tight centering aileron flap servos in-line rudder stabilator servos across in-line servos mounted plywood tray make installation removal easier other servos rails Ball links used attach flap aileron linkage links snapped forefinger link easily unsnapped placing small flat-blade screwdriver underneath twisting Aileron differential adjusted take-off point servo wheel Flying Hand toss model few times check out control sensitivity Hook winch build up fairly large line tension before launching recom mended become familiar Europa before using flaps large degree very easy use too much flap actually decrease performance rather increase Europa can also successfully launched high-start word cau tion use heavy-duty high-start stretch minimum 12 pounds pull Europa light airplane Speed runs should first flown out ballast get feel ship Slowly add ballast find highest speed point Remember keep nose down turns avoid losing momen tum Split-S turns effective turns two practice altitude first Radio Technique/Myers Continued page 34 ations RC flying will become safer best results everything should parallel redundant transmitter batteries servos plane Well frIends readers weve covered lot ground column started ultra-simple receiver no larger thumbnail have progressed through discussion possible advan tages obtained grouping RC channels concepts safer RC system on-board sampling com puter multiple parallel redundancy doesnt exist yet Weve looked what what might tip hat John Preston have talked little philosophy hope youve enjoyed Keep writing George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Toledo/Pruss Continued page 38 already have set good track record Davey also manufactures Sport Winch Powrzoom Winch Hobby Lobby rare Sailplanes Germany Hobby Lobbys line will hard top Schulgleiter SG-38 kit masterpiece full choice woods de tailed fittings thatsells for$128 -scale has span 102 area 1627 sq m also carry Gnmau Baby Reiher all-fiberglass state-of-theart Speed Astir spans over 12 ft latter priced $680 Bob Martin showed another Two-Meter bird called Pussycat has simple straightforward construction very tractive linesdesigned both Thermal Slope Soaring MEN Model Engineering Nor walk Dwight Holley F3B World Champion 1981 Dwights basically all-wood model caused fiberglass school construction sit up take notice Dwights Gobbler avail able MEN did everything glass ships did except better has 114 July 1985 129
Edition: Model Aviation - 1985/07
Page Numbers: 22, 23, 24, 25, 26, 27, 28, 29, 30, 128, 129
NO OCR TEXT NO OCR TEXT THIS SAILPLANE conceived state-of-the-art design F3B competi tion utilizes combination Euro pean American unique features produce & highly competitive F3B machine Foam fiberglass technology used extremely strong structure can handle powerful winches having moderate empty weight unballasted wing loading range 115 oz/sq ft fiberglass fuselage foam wing cores being made commercially available nominal cost assist average modeler reproducing Sailplane should stated onset author has competed world class F3B competition American team tri als However plane/pilot combination did place 3rd F3B speed 1983 LSF International Tournament Chicago LarK g sirong spnng holds thewings tightly hatch makes connection removal easy Right Horn base burled control surfaceforatreamlining Simple linkage used minimize projecting objects Trim adjustments made atthe servo end otthe linkage Left ite strips ironed onto tne traiiing eage OT wing iop OT ins nap nunge nwp scull lower aileron surface shown allow downward movement yet resist binding Keep controm u 24 Model Aviation Above right wing root Front cable operates aileron ana rear cable operates flap Right Ballast slugs inserted wing ballast tubes through hatch removing wings making often-required loading changes simple task 2nd F3B 1984 Nationals Reno believed design has potential far beyond its present accomplishments current F3B rules emphasize speed task Speed task can potentially win since best can done regarding duration distance tie Eppler 205 airfoil chosen Europa mind quite number good airfoils also could have used Airfoil type being interesting fun experiment produces relatively small differ ence overall performance F3B competitive Sailplane events consistently high launch pilot/plane flying experience primary importance Zoom launches executed quite well Europa has launched couple powerful winches country foldinz winz Left close lookatthe radio Installation Ball links pop off fiap aileron servos roreasywing removal Right Stit foam rubber squeezed intothe hatch area keepthe ballast slugs moving around ballast must snug enough forthe Ga speed run Left small noTcnea Diocl slips under fuselage rear deck fasten canopy rubberbanu rIuu uuwn flu irrn nIgHT Left aide fin showing rudder cable horn Steel cables used control surfaces provide very tight control no slop Left right sIde fin showing position pinned rudder hinges stab drive fitting Right Closeup tail sembly design stabliator root section avoids usual diagonal cutouts trailing edge allow rudder swing date say would possible difficult deter point wing will break actually breaking Europa wing has mild sweepback Experimentation indicates sweep yields effective dihedral crease result improved turning characteristics Sweep also has psychological effect appearing moving faster whether Flaps chosen glide path control over authors usual preference spoilers done achieve com bination landing control launching aid control surface Approxi mately 100 flap produces some increase launch height amount deflec tion depends pilots launching technique other factors such wind speed ballast Full-flap deflection also useful aborted attempt Sailplane can safely dive very steep angle landed slowly launch ing area much shorter time Sailplane feature thus less working time consumed relaunch Flaps have some undesirable side ef 26 Model Aviation ianajrirui test .flying site europa utilizes state-ot-mne-art crew F3B uuugn fea1uus ommerciaIiy-avaIIabie components greatly simplify construction fin Made s though Some additional drag created hinge line amount drag produced subject consider able debate Europa have used MonoKote seals gaps minimize effect Also pitch-up effect flaps deflected severe enough mixer correct stabilizer trim necessary use electronic mixer transmitter mechanical mixer plane could used Another difficulty using flaps glide path control pan cake effect retracting flaps slow speed overcome slightly higher landing speed can used Ailerons rudder driven inde pendent servos have electronic cou pler transmitter ailerons rudder can coupled uncoupled flight An alternative would have coupled continuously simply connecting both servos aileron channel Y-harness Europa stabilator quite thin might expected create pitch-sensitive condition has proven case flight testing stabilator root section does extend aft rudder hinge line avoids usual diagonal cutout stabilator trailing edge allow rudder swing Direct-drive control cables used control surfaces done dis courage flutter developing due floppy linkages Care must taken choosing cables have close fit outer tubing slop will appear 900 bend point cables Flaps ailer ons driven about center length also lessen possibility flutter Ballast carried wing order keep fuselage small ballast tubes can hold up 56 lb ballast Filling tubes capacity would raise Europa wing loading little over F3B limit Being capable changing ballast quickly F3B important particularly decide working time avoid having remove wings time ballast changed access hatch has designed top fuselage Ballast made up x 2-in brass tubes filled lead see Callisto 82 article October 1982 Model Aviation using ballast tube always completely filled ballast ballast dowel dummy slugs held place stiff piece foam squeezed hatch area first thought Europa would good Sailplane AMA Unlimited duration events because its weight Early tried type event did particularly well Yet some well-known fliers using Sailplanes wing loadings comparable level higher quite successfully July1985 27 Left spars built-up external core straightedge weights used ensure trueness Above wing joiner tubes being fitted spars Proper wing dl hedrai sweep must estabiished spars correct wing-fuseiage alignment Roove pars soiia ana run Ins full loiner tubes completeiy installed before spars go wi paneis procedure differs usual construction methods Right Cutting foam wing cores hot wire See text source cores spar notches core used reference Foam between notches will completely removed replaced spar Photo credit bythe author duration-type events Later discov ered main problem plane simply required different piloting technique lighter ship windy conditions Europa actual ly has advantage over conventional duration designs Lighter planes hav ing add ballast match wing loadI ings Europa Europa has superior strength designed fly higher airspeeds Building lighter weight version Europa specifically duration events has also considered should make interesting Sailplane AAILERON CONTROL CABLE TUBE-y FLAP CONTROL CABLEFUBE LEFT WING ~--6 FLAP CCNTROL1 CABLE TUBE Il/3D GD NEASS WING TUNE CUP HOOE WING RETAINER CUT CORE ROOT TBOARD LEAN OR ROUT RIB TO MATCH ROE FANRID I/IN PLY ROOT RIB NNN-------\~N--- TNT - aDIAnGWa- 3/32 PLY 71 OUTRIDE WEB I/O ID CARI MOTOR TUB TUB ED 3W SPRUCE WING PIN ANCHOR BLOCKS W NO P N TUBE 3/IN LW SPRUCE ALEADING EDGE 3/IN 3/N SPRUCE TIP_________ 3/RMESIUM BALSASTABILATOR LEFT SIDE SHEET ___________ 1/IN 1/4 GPRGCE TRAILING EDGEG PF B FUSELAGE IS 3 LAYERS GE 6 UZ /50 FT 216 PLY FIBERGLASS CLOTH CANGEY TRIM LINE B AB 11W PLY SPRUI SPAN itself Construction expected modelers choosing build Europa F3B competition have reasonable amount construction experience Modelers like usually have own building techniques may actually make design modifications along way Therefore general building notes will given rather step-by-step instructions fiberglass fuselage commercially available Viking Models 2026 Spring Lake Dr Martinez CA 94553 Likewise foam wing cores available Viking can make core templates plans cut yourself standard hot wire cutter used Wing wing spar full length solid construction made spruce plywood balsa capped carbon fiber tape after installation core carbon fiber tape can eliminated substituting carbon fiber spars instead spruce spars However carbon fiber spars sometimes difficult obtain 28 Model Aviation core aft ot spar cut two pieces aid cutting ballast tube holes close-up OT tne ballast tuow nulOS made using small templates clr cular holes guides hot wire cutter Top wing showing epoxied-on carbonflbertape Control cabletubing can seen Imbedded foam availabie carbonfiber spars can used instead spruce Full-Size Plans Available. See Page 164 3 EACH2-7/82-7/H VIA PLY EXTERNAL3/B US BALSA WEBLEANG EDGENOTE 3/B VERTICAL GRAIN [ii-i BALSA WEB ENTIRE LENGTHWING DRAL OF SPANSECTON D-DSECTION C-C BALSA BLGCK WINGTIP OH N 3/B SPRSCE SPAR FOAM CORE WINS z WIDE CARBON FIBER TAPE EPOSIED ON TOP B BOTTOM OF CORE FROM THIS LOCATION TO WING ROOT WING PLAN TOP VIEWL4RALSA ANSENOTE CONTROL CABLES 1/16 PLY BALLASTNOTE FLAP HINGES LOCATES ompON LONER SURFACE OF WINGRIGHT SIDEBLOCKSiC HONN3/IA 3/H BALSAT E STOCK -WHEEL COLLAR FOR LOCAING STAB ON -I/HOD BRASS SECTION E-E TSBING iii I/IA 1/4 SPRGCE TRAILING EGGE -2B 3/B SPRUCE CARBON FIRERSPAR ________________TAFE lAG PLY 13/8 SPRUCE- EB3/B BALSA SECTION F-F'INTERNAL TORSO BRASSCGRBONV/ES TUBINGFIBER TAPESECTION B-B -I/IA PLY ROOT SECTION 5-5 RIB 3/30 BALSA HATCH COVERI/B BRASS /TUSE NOTE AILERON HINGES LOCATES ON OPPER SURFACE OF WINS AIRS ROOT FOAM CORE TEMPLATES IVI6IHIZ GRAIN BALSA CAPS TO COVER WCBARE FOAM AFTER CGTTINS SOT FLAPS 02/S AILERONS AILERONLEFTRISHT CABLEFLAPFLAPMICROBALLOON CABLEFILLER BALSA ~lIE ETI PLY S HE ETI NO SECTION A-AFOOM CARBONCORE FIBE TAPEID GIA ITOWEL SPRUCE LEADING EDGEI/IA BALSA SVEETINS 3/B PLY \\V4 BALSA5o/H3RN IOTOJNT SPRUCE FUSELAGE VIFW MN TH LOC3/H BALSA FELECTRICAL SPECIFICATIONSI/B OS BRASSTERMINAL WINS SPAN110TGBE OcLOERED WINS AREA930 55 IN I/IS I/B BALSALENGTH505 HATCH FRAMESTAB AREA114 55 INSTABILATOR DRIVE WEISHT EMPTY. 74 OZ WINS LUGGING -- liD OZ/SS FT WINS JOINTER5/IA OIA B-U/A ___IA WING PIN S/30DIA A15/AVA PLY INSERT STAB JOINTERO. 3/3001G 3-7/IA AILERON THROW. V 3/4 TO 1/4 AT TE H RUISDER ThROW. 4 AT TE JI I/O AT TEF DEFLAP THROW55 BALLAST CAP. 56 LBS NUTE- FIN SIDES COVERED /HSO FILL SOlD WITH EPOSYWITH I/IA SALSU SOWN TO GNU MICROBALLOONSFUSE TOP BUT NOT EXTENDINGTGRO8EARiS/j/ INTO FUSE SHEETINSNOT SHOWN ON SID VIEW IS TUTAL ISNESS 3/BBEFORE SHAPINGII ALSA QISHEET FUSELAGE SIDE VIEW-___ F3/H PLY 1/4LOCATN OF STAB EPLYI/B TUBECONTROL TSBINS TO/PA 006 LOCATION________________ 23HSA BALSA / SHEET SECTION H-H 1/455 SPRUCE LEADING EDGEI/IA BALSA TINSSECTION I-I spars separately constructed unit core Build completely building board except rear 3/ ply webbing wing tubes carefully align spars building MODEL AVIATION EUROPA F 3 B COMPETITION SAILPLANE DESIGNED BY TERRY EDMONDS TRACING BY JOE DEMARCO Bottom ottfle wing Just priorto gluing onthe sheeting Chord-wise seam core ballast stop plate visible plc Flaps ailerons being cut band saw Core bed underneath wing keep level goes through Taper aileron leading edge allow downward motion July1985 29 Left Slots wing hinges Ailerons hinged top surface flaps bottom surface Pm-notching hinge blocks will make alignment easier Right fin has V4-in balsa sheet core stabilator control cable tubing embedded core Left fin rudder after sheeting has applied shaped rudder made solid sheet balsa Right stabilator under construction Joiner tubing installed full-length pieces assure alignment Later stab cut left right halves board proper dihedral sweepback single length brass wing tubing fit cavities Some hollowing-out Y2 ply webbing may necessary proper fit wing tube Install rear webbing filling cavity microballoons epoxy Finally tubing can cut off A6 beyond end spars core must cut two pieces spar installed spar notches core templates refer ence whole area between notch es eventually cut out also time cut out cavities ballast tubes method cut core piece aft spar two pieces end ballast tubes perpendicular trailing edge cavities can easily cut out hot wire foam cutter Small templates tangent circles can made core pieces spar epoxied back together time Place pieces back core beds weigh down until fully cured Next carbon fiber tape can epoxied top bottom core over spars Regular pinned hinges used control surfaces requires installing balsa anchor blocks foam core intended locations Note hinges flaps bottom surface aileron hinges top Use single blocks both wing control surface also pre-notch blocks hinges making easy hinge alignment Anchor blocks horns also stalled now Install ballast tubes ballast stop plates control cable tubings dowel hook anchors cores point initial fitting wing fuselage should done Carefully align wing panels fuselage sure have equal incidence glue rear wing pin tubes anchor blocks Prepare cores installation sheeting will slightly raised portion over carbon fiber tape can corrected final-sanding sheeting top surface Glue sheeting followed leading edge trailing edge tip blocks Make final fit wing panels fuselage glue ply root ribs Sand wing shape sand down bump over carbon fiber tape smooth contour Saw out flaps ailerons band saw handy Putting wing panel lower core bed keeps level going through saw Trim raw edges install balsa caps Note leading edge ailerons has tapered gap bottom hinge line allow downward deflection Hinges horns can now fitted glue until wings have covered horns have mount ing tabs cut off epoxied directly slot anchor blocks Small holes should drilled horn base epoxy hold onto stabilator very simply made %-in balsa sheet edged spruce strips hard part sanding shape using ply root rib gauge lit tle practice can shaped accurately jointer wire tubes should installed full-length pieces later cut left right halves assure alignment Wheel collars installed front wire locking stabilator fin rear jointer wire bent slightly give some grab commonly done Fin rudder fin has -in balsa core core built up spruce edg Continued page 128 30 Model Aviation MINI-STRIPS PRECISION DIE-CUT Medium Garnet SAVES TIMEREPLACEMENTPies Garnet AND EFFORT $155SANDING BELTSAssId Water Pratt TEE ALUMINUM EXTRUSION SANDING BLOCK hi us BUFF-STUFF Sail-adhesive sand paper Luge True Seduce Went Wear Del 11 Inch $250 Handy Use22 inch $365 RUFF F SELF ADHESIVE SHEET SANDPAPER MAKE YOUR OWN SPECIAL SANDING SHAPES Na mssy glue ar dryhIR hiM Medium Fine r Flue $99 M N $699 COMPACT 10 inch HACK SAW SAWS ANYTHING ANYWHERE Saw has rugged die-casl trum cemlertuhie chip-pruel plastic Iq sad handle Receding ne P justahle B hlade gives pad walk access Cuts weed plastic m# HARDENED MUSIC WIREextra hlndes-SIS199 Safety/Preston Continued page 125 models reader Col Bill Webb found out hard way Bill flies Colum bus Aero Club field apparently has some overhead power lines skirt flying area However Bill thinks RF emission high-voltage trans mission lines caused interference radio resulted loss model follows flying Old Reliable high-quality three-channel radio good 25 glow engine good weather sunny wind five eight mph just chopped throttle make approach land lost control plane went slow lazy left turn flew power lines gripped big hand could have lodged plane tighter can see Bill included color photos accompany column called Ohio Power Company snt truck out crew said hO wiyY wires main lines ultra-high voltage ground ing damp could help talked other club members past have hit strange glitches same end field think theory interference correct wires over 2700 feet away closest point nothing like has ever happened before feel bad about loss plane worth life try retrieve previous Safety column reported result modeler trying retrieve model caught overhead power lines died under circumstances attempt such retrieval yourself Call power company Bills case will perform job themselves accept fact just lost model last sobering story before leave month couple weeks ago received phone call Kevin Stone Massachusetts modeler told about incident occurred bending A-inch music wire landing gear around %-inch-diameter hardened steel mandrel mandrel snapped struck Kevin face resulted loss eye freak accident perhaps However points out need consider wearing safety glasses both workshop out flying field Till next monthHave safe John Preston 12235 Ti/den wood Dr Rockville MD 20852 responding advertisers riention read about Model Aviation Europoa/Edmonds Continued page 30 ing pieces ply insert control cable tubing stab drive fitting must made up installed now Cut A-in slot top fuselage tail boom fit fin core position Mark top boom lies fin sides Glue balsa fin side sheeting marks up Build up rudder sand fin rudder shape Pinned hinges used rudder should fit no hinge line gap Fuselage Cut out opening top access hatch small frame con structed around inside edges opening hatch cover made out balsa sanded contour fuselage wing rod tube fuselage should have glued fitting wing fuselage Plywood spruce microballoons/epoxy mixture used additional support wing rod tube fin now glued fuselage tail boom wing panels installed making certain fin perpendicular wing may help ful also have stabilator doing Control cable tubes fuse lage should secured along entire length least much possible 128 Model Aviation r NYLON SCREWS No fancy packaging Just great selection low prices 6-32 x17/s100 Os 8-32x2MlOOsa 10-24x 1112100 sa 1O-32x2lOOsa 114-20X2_____ 120ea 1/4 20 x 3200 Os 1/4. x 4600 ea Solialler larger sizes also available Shipping Under $10 add $150 Over $10 Free SPECIAI 516 Greenway Drive London KY 40741 Dealer Inquiries welcome L APPLIED DESIGN CORPORATION 738 Pann St El SegUnds CA 90245 WICH Padded tall aAd carves Handy ta Maid Easy Use $235 Add 20% postage Send 25 cattlog i LIONS BONN Ultimate Fun Fly Competition Model Ideal Sunday Flyer Excellent OS 65 PS ptIonally slow land ing speed le enough 1st AIleron model easily framed less U hrs. balsa raft plywood construction ed full sise plans EngIne45 61 Wingspan62 Length OA54 WIng Area850 sq Weight Sf 6 Lbs Wing LoadIng15 17 ox Designed Uob Lame kit market sold satisfaction guarantee money back LIST PRICE 94 S 5995 Introductory prIce offor limIted time Prepald Continental USA Texas Residents Add 5% Sales Tax Sand Money Orders Cashiers Check Next Day Shipping Allow 2 Weeks personal checks clear Sorry no COD Curtis Model Aircraft 3002 M Canterbury Circle Sherman Texas 75090 AC 214-U936155 High-speed maneuvering can cause unsupported tubes distort interfere control Finish MonoKote recommended wood surfaces K&B paint fuselage Alternately other finishes could considered weight buildup should avoided F3B models tend relatively heavy adding unneces sary finish weight Installation flap aileron cables installed per plans servo arrangement will have close photographs Kraft KPS-24 servos used prototype because have high torque tight centering aileron flap servos in-line rudder stabilator servos across in-line servos mounted plywood tray make installation removal easier other servos rails Ball links used attach flap aileron linkage links snapped forefinger link easily unsnapped placing small flat-blade screwdriver underneath twisting Aileron differential adjusted take-off point servo wheel Flying Hand toss model few times check out control sensitivity Hook winch build up fairly large line tension before launching recom mended become familiar Europa before using flaps large degree very easy use too much flap actually decrease performance rather increase Europa can also successfully launched high-start word cau tion use heavy-duty high-start stretch minimum 12 pounds pull Europa light airplane Speed runs should first flown out ballast get feel ship Slowly add ballast find highest speed point Remember keep nose down turns avoid losing momen tum Split-S turns effective turns two practice altitude first Radio Technique/Myers Continued page 34 ations RC flying will become safer best results everything should parallel redundant transmitter batteries servos plane Well frIends readers weve covered lot ground column started ultra-simple receiver no larger thumbnail have progressed through discussion possible advan tages obtained grouping RC channels concepts safer RC system on-board sampling com puter multiple parallel redundancy doesnt exist yet Weve looked what what might tip hat John Preston have talked little philosophy hope youve enjoyed Keep writing George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 Toledo/Pruss Continued page 38 already have set good track record Davey also manufactures Sport Winch Powrzoom Winch Hobby Lobby rare Sailplanes Germany Hobby Lobbys line will hard top Schulgleiter SG-38 kit masterpiece full choice woods de tailed fittings thatsells for$128 -scale has span 102 area 1627 sq m also carry Gnmau Baby Reiher all-fiberglass state-of-theart Speed Astir spans over 12 ft latter priced $680 Bob Martin showed another Two-Meter bird called Pussycat has simple straightforward construction very tractive linesdesigned both Thermal Slope Soaring MEN Model Engineering Nor walk Dwight Holley F3B World Champion 1981 Dwights basically all-wood model caused fiberglass school construction sit up take notice Dwights Gobbler avail able MEN did everything glass ships did except better has 114 July 1985 129