Arrowplane

U David Larsen hen first Competition Fun-Fly CFF models arrived scene thought needed flying skills trainer progressed point could touch-and-go confidence reasoned needed model could several touch and-gos few secondsand dozen rolls blink eye However CFF models used carbon fiber other exotic materials demanded computer radio needed really needed Pattern trainer Old-Timer model float airplane So let urge have CFF model simmer back burner couple years 8 Model Aviation os author Graphic Design Caila Kunz Above Engine mount setup shows engine position nose gear mounting Two-ounce fuel tank rubber-banded opposite side mount Right Light weight tack dihedral makes model very agile directionally stable no problem experienced pilot June1998 9 David Larsen launches prototype model simple underhand toss Design has undergone two years flight testing 1995 decided time satisfy urge studied plans looked CFF models figured could guesstimate dimensions size surfaces needed engine 40 wasnt busy Fugi 099 sons airboat 40 generally considered too big average CFF model design would have fit Fugi 099 Two years fun 50 test flights later prototype Arrowplane still going strong am having blast simple easy build inexpensive semi-CFF model airplane designed flown closein low altitudes 36-inch wingspan has problem Since common sizes balsa come 36-inch lengths wingspan limit made building easy retrospect Im glad kept size model small small model uses less expensive engine miserly amount fuel needed cost wood covering minimal aluminum arrow shaft deer-hunting hobby fit bill fuselage get idea Im cheapskate Well dont mind having fun model can built $20 requires two ounces fuel per flight Arrowplane will ROG Rise Off Ground wire outriggers installed underhand toss will launch model calm conditions dual-rate radio desirable takeoff landings real fun happens high rate Rolls very fast 20-foot-diameter loops make flying confined area easy model flies slowly have time enjoy show thumbs creating beginner should save model until he/she has mastered aileron trainer CONSTRUCTION As begin study plans will notice model simple uses three channels standard servo operates June1998 11 p wing still pinned down incidence meter used align arrow shaft shaft resting TE hole drilled fuselage parallel building board View wing bottom shows aileron flex cable tube plywood outrigger mounting points servo rails Bottom sheeting will glued next Type RC Sport Wingspan 36 inches Engine 09- 15 two-stroke Functions Elevator aileron throttle Flying weight 36 ounces Construction Built-up Finish Heat-shrink film Tailboom attached fuselage medium CyA sewn KevlarTM ribbon Saturate wood ribbon thin CyA sewing complete ailerons another hooked elevator miniservo handles throttle standard servo can used throttle mini wanted save much weight could miss rudder occasion enough include prototype Number Two have other models will knife-edge stall turns Ailerons Tail Feathers Construction begins pieces made medium-weight balsa sticks Cut length pin down 34 x ing edge ailerons Add ieces until both ailerons completed would better control horn mounting plates made hard balsa An alternative method poke holes wood saturate mounting area thin cyanoacrylate CyA glue vertical fin built directly plan alsa sticks horizontal stab includes 1 1A wide center section remaining pieces levator built up similar fashion except uses 3/ x ing edge piece leading edge wider because bevel hinge must sanded piece builder routinely glues piece triangle stock onto leading edge ailerons elevators dont have go bother sanding bevel can use eading edge material preparing hinge installation must bevel leading edge moving pieces plan shows allerons elevator hinged top because use sewn cloth hinges wife makes hinges one-inch-wide pieces Supershrink Coverite Solartex Worldtex whatever fabric covering have available White natural colors seems work best since dont show under other hues convenient covering has adhesive Draw straight line down middle strip covering sew two strips covering together using line guide adhesive sides should face other seam medium-to-fine stitches great wife uses computerized sewing machine $20 treadle job will trick Granite State has iron-on gapless hinge will work same greatest advantages hinges gapless free moving like use CyA hinges Robart hinges please glue es scrap hinge locations secure gluing ailerons tail feathers dry remove building board sand smooth model slow flier necessary round leading edges tail feathers too much just take off corners Dont taper elevator aileron trailing edges Leave k sand edges slightly round Vacuum balsa dust pieces wipe tack cloth Mark centerline horizontal stab center arrow shaft fuselage will attached Determine location vertical stab glue place Remember vertical tail feathers will bit off center Use right triangle keep vertical stab perpendicular horizontal stab glue dries Glue piece ngle stock side vertical stab opposite arrow shaft location Hinge elevator cover tail feathers using sewn binges cover first hinge job Set pieces aside final assembly Wing Two rib outlines shown plans Dennis Johnson drew plans suggested diamond-shaped airfoil Since already several dozen flights prototype original airfoil knew conventional shape worked great have time build diamond airfoil version have included plans consideration ten ribs single half rib must cut out before starting wing construction use See-Temp semitransparent template material make pattern plan template can 12 Model Aviation wplane bones Tail section attached until after covering installation gearadjust position under proper balance obtained Engine mount epoxied wing iM dowel pins mount place Slight right thrust acceptable no left thrust please K V balsa leading edge 09 to 15 motor choice sheeting deleted beyond tins paint clarity I _______ dotted area 14 o%balso q bolos spar1 top botton ettery iver 5toPandbetiems II 14 e V diamondantenna tube V lite plyairfoil spar locationI I outrigger doublerH HI145 oap strip aileron fec cableHtop bottom V balsa tip rib511 ribs II balsa ribsaileron flee cable ~~0I 14 X14 balsa trailing14c balsa trailingVs balsa guoset14o cap strip14a balsa gusset edgsparedge sheetingtopbetween arrows bottomtop bottom II III1 - ii V arrow shaft fuselagc 14 balsa gusset 14 X 14 balsa 14 balsa gusset b X balsa \V 14 X 14 balsa jj 14 balsa aileron control born mount -1 vertiosi stobarrow shaft 14 balsa trianglehorisontol stab cross section detoil IOiibel5a 14 balsa gusset 5 113455 ii 1414 balsa cut fit motor V plywood rooter mount VN ALL RIGHTS RESERVEDalso -n F CD -o 0 Cj CD CD Co CD Co wheel 34 meic wire V dowel ARROWPLANE AEROBATICISPORT MODEL DESIGNERBUILDEP David Lareen DRAFTER Dennis Johnson WINGSPAN 86 WEIGI4T 2i lb POWER 099 15 glow c7N Cr II 9N zI &j 4 Cr U z 4 -I I LilKJ 514 Model Aviation

U David Larsen hen first Competition Fun-Fly CFF models arrived scene thought needed flying skills trainer progressed point could touch-and-go confidence reasoned needed model could several touch and-gos few secondsand dozen rolls blink eye However CFF models used carbon fiber other exotic materials demanded computer radio needed really needed Pattern trainer Old-Timer model float airplane So let urge have CFF model simmer back burner couple years 8 Model Aviation os author Graphic Design Caila Kunz Above Engine mount setup shows engine position nose gear mounting Two-ounce fuel tank rubber-banded opposite side mount Right Light weight tack dihedral makes model very agile directionally stable no problem experienced pilot June1998 9 David Larsen launches prototype model simple underhand toss Design has undergone two years flight testing 1995 decided time satisfy urge studied plans looked CFF models figured could guesstimate dimensions size surfaces needed engine 40 wasnt busy Fugi 099 sons airboat 40 generally considered too big average CFF model design would have fit Fugi 099 Two years fun 50 test flights later prototype Arrowplane still going strong am having blast simple easy build inexpensive semi-CFF model airplane designed flown closein low altitudes 36-inch wingspan has problem Since common sizes balsa come 36-inch lengths wingspan limit made building easy retrospect Im glad kept size model small small model uses less expensive engine miserly amount fuel needed cost wood covering minimal aluminum arrow shaft deer-hunting hobby fit bill fuselage get idea Im cheapskate Well dont mind having fun model can built $20 requires two ounces fuel per flight Arrowplane will ROG Rise Off Ground wire outriggers installed underhand toss will launch model calm conditions dual-rate radio desirable takeoff landings real fun happens high rate Rolls very fast 20-foot-diameter loops make flying confined area easy model flies slowly have time enjoy show thumbs creating beginner should save model until he/she has mastered aileron trainer CONSTRUCTION As begin study plans will notice model simple uses three channels standard servo operates June1998 11 p wing still pinned down incidence meter used align arrow shaft shaft resting TE hole drilled fuselage parallel building board View wing bottom shows aileron flex cable tube plywood outrigger mounting points servo rails Bottom sheeting will glued next Type RC Sport Wingspan 36 inches Engine 09- 15 two-stroke Functions Elevator aileron throttle Flying weight 36 ounces Construction Built-up Finish Heat-shrink film Tailboom attached fuselage medium CyA sewn KevlarTM ribbon Saturate wood ribbon thin CyA sewing complete ailerons another hooked elevator miniservo handles throttle standard servo can used throttle mini wanted save much weight could miss rudder occasion enough include prototype Number Two have other models will knife-edge stall turns Ailerons Tail Feathers Construction begins pieces made medium-weight balsa sticks Cut length pin down 34 x ing edge ailerons Add ieces until both ailerons completed would better control horn mounting plates made hard balsa An alternative method poke holes wood saturate mounting area thin cyanoacrylate CyA glue vertical fin built directly plan alsa sticks horizontal stab includes 1 1A wide center section remaining pieces levator built up similar fashion except uses 3/ x ing edge piece leading edge wider because bevel hinge must sanded piece builder routinely glues piece triangle stock onto leading edge ailerons elevators dont have go bother sanding bevel can use eading edge material preparing hinge installation must bevel leading edge moving pieces plan shows allerons elevator hinged top because use sewn cloth hinges wife makes hinges one-inch-wide pieces Supershrink Coverite Solartex Worldtex whatever fabric covering have available White natural colors seems work best since dont show under other hues convenient covering has adhesive Draw straight line down middle strip covering sew two strips covering together using line guide adhesive sides should face other seam medium-to-fine stitches great wife uses computerized sewing machine $20 treadle job will trick Granite State has iron-on gapless hinge will work same greatest advantages hinges gapless free moving like use CyA hinges Robart hinges please glue es scrap hinge locations secure gluing ailerons tail feathers dry remove building board sand smooth model slow flier necessary round leading edges tail feathers too much just take off corners Dont taper elevator aileron trailing edges Leave k sand edges slightly round Vacuum balsa dust pieces wipe tack cloth Mark centerline horizontal stab center arrow shaft fuselage will attached Determine location vertical stab glue place Remember vertical tail feathers will bit off center Use right triangle keep vertical stab perpendicular horizontal stab glue dries Glue piece ngle stock side vertical stab opposite arrow shaft location Hinge elevator cover tail feathers using sewn binges cover first hinge job Set pieces aside final assembly Wing Two rib outlines shown plans Dennis Johnson drew plans suggested diamond-shaped airfoil Since already several dozen flights prototype original airfoil knew conventional shape worked great have time build diamond airfoil version have included plans consideration ten ribs single half rib must cut out before starting wing construction use See-Temp semitransparent template material make pattern plan template can 12 Model Aviation wplane bones Tail section attached until after covering installation gearadjust position under proper balance obtained Engine mount epoxied wing iM dowel pins mount place Slight right thrust acceptable no left thrust please K V balsa leading edge 09 to 15 motor choice sheeting deleted beyond tins paint clarity I _______ dotted area 14 o%balso q bolos spar1 top botton ettery iver 5toPandbetiems II 14 e V diamondantenna tube V lite plyairfoil spar locationI I outrigger doublerH HI145 oap strip aileron fec cableHtop bottom V balsa tip rib511 ribs II balsa ribsaileron flee cable ~~0I 14 X14 balsa trailing14c balsa trailingVs balsa guoset14o cap strip14a balsa gusset edgsparedge sheetingtopbetween arrows bottomtop bottom II III1 - ii V arrow shaft fuselagc 14 balsa gusset 14 X 14 balsa 14 balsa gusset b X balsa \V 14 X 14 balsa jj 14 balsa aileron control born mount -1 vertiosi stobarrow shaft 14 balsa trianglehorisontol stab cross section detoil IOiibel5a 14 balsa gusset 5 113455 ii 1414 balsa cut fit motor V plywood rooter mount VN ALL RIGHTS RESERVEDalso -n F CD -o 0 Cj CD CD Co CD Co wheel 34 meic wire V dowel ARROWPLANE AEROBATICISPORT MODEL DESIGNERBUILDEP David Lareen DRAFTER Dennis Johnson WINGSPAN 86 WEIGI4T 2i lb POWER 099 15 glow c7N Cr II 9N zI &j 4 Cr U z 4 -I I LilKJ 514 Model Aviation