Functional 46powered model just fun FOR SOME FLIERS participation relatively basic level acrobatic skill enough work put something supposed fun Bushfly put together lust fun fraternity mind absence cowl semi ultralight configuration resulted effort keep model simple possible However structural details complicated necessary hold finished product up what consider reasonably decent standard quality based observation experiences field over years such detail 17-inch wheel-to wheel stance main gear Its purpose give high-wing trainer same ground-handling stability low-wing model main gear mounted wide apart normally found Pattern model example overshot landing Bushfly can circled up still speed rollout tipping up grounding prop Another feature involves little extra building effort 1/32 plywood inlay both sides middle area elevator bottom area rudder gives firm no-slop footing horns adds strength deflection needed leaves balsa core clear easy hinge-slotting prevents warpage/splitting adds insignificant amount weight Bushfly uses scrap foam fillers open spaces center section otherwise fully sheeted frame wing way borrowing simplicity fully bridged strength conventional foam-core wing root joint center section weight glue coated both sides conventionally constructed foam-core wing panel Bushfly weighs about six pounds dry give take including soft engine mount four standard servos arrow-shafttype linkage elevator rudder aircraft plywood landing gear spreader 46 engine tank 2-inch spinner prop CONSTRUCTION As project read way through construction text turn brain before studying plans use thin cyanoacrylate CyA glue fast assembly put waxed paper under work lest discover structure has glued itself down firmly workbench Some suppliers Lone Star instance sell 4-6-lb very light sheet Unless otherwise noted blocking sheet Bushfly thicker /s extra-light few pennies some suppliers will select dead straight pieces requested such um balsa stab elevator Wing Make right left panel Construct frames integral bottom skins gluing individual framing members down skin build Trim back edge skin sharp X-Acto knife metal straightedge least 30 inches long supplier sands wing skins down thin side use /32 otherwise use A6 Make rib template stiff card stock scrap 2 plywood sharp pair tin snips makes short work trimming thin plywood two ribs sides center section cut 3A6 light balsa others cut medium-weight 3A2 cut stack make sure match up Notches spars first five inboard ribs er accept /g x 3/ spar doublers main spars i/is x 3/ hard straight-grained balsa Place bottom spar its doubler position glue ribs place install top spars Notice back five inches 8 Model Aviation om wing surface flat plane Weight back five inches down flat workbench build twist-free wing panel 1/ medium balsa front trimmer should match up closely front cut rib back cut rib butt-jointed against trailing edge glued flush back edge bottom skin Leave 13h inches skin spars trailing edge extending root end panel use building center section Save rib template later use laying out wing saddle fits wing holds 00 incidence assembling two panels form one-piece wing aware center section filled between framing members scrap foam small pieces foam can blocked out hacksaw blade sanded contour coarse sanding paddle hot-wire cutting necessary gluing foam adjacent use epoxy aliphatic-resin glues some glues chemically incompatible foam will make mess 1 h-back center section faced A6 plywood cut match dihedral drilled accommodate /6 front hold-down dowel Taper back end dowel pencil sharpener tapered back end anchored hole drilled front A6 plywood scab reinforcement spars meet root center Predrill holes plywood parts before gluing place back scab root joint spars /32 plywood also serves front face aileron servo well back face well also 1/32 plywood Set up two panels jig otherwise supported such no twist within panel other root joint held 00 incidence correct dihedral angle Complete center section installing dowel foam fills sure bottom skins fit neatly root foam fills meet form root joint glued 30-minute epoxy Glue A6 vertical-grained spar webbing place before adding top wing skin Use slow-curing glue will give time apply top framing surfaces entire panel before placing skin position taping down top edge front trimmer fully sheeted wing will take permanent stiff setincluding twistso sure true Reinforce center section fourinch glass cloth epoxy rounding leading edge wing panels good idea mark line zero-incidence plane intersects front face use softlead pencil Round up down line maintain incidence integrity wing Use same principle form tips Adjustment wing incidence can done shimming sanding back edge wing saddle Any such adjustment should feathered front saddle since wing fixed non-adjustable position front holddown dowel Doublers fitted maybe 1/s inch below saddle cut possible need adjustment mind Balsa sands easily plywood doesnt ailerons cut 3/ x 2 aileron stock trimmed 3/ x 1 will leave trailing edge just tad less 3/ts thick Leave wayits good insurance against flutter Use Goldberg equal long heavy-duty /8 aileron horn wires -20 tap drill set will needed put threaded holes rear hold-down blocks can cut raft plywood 3/ maple Tail Surfaces rudder fin cut 3/ sheet stab elevator sheet inlays middle elevator bottom rudder cut 1A2 plywood plywood pieces epoxied surfaces held down securely office binder clips epoxy cures Install hinges elevator rudder ailerons Slot stab fin wing control surfaces can dry fitted Note cut-out rudder 10 Model Aviation owl wide-stance main gear slender tail section OS 46 soft mount Bushfly what author calls utilitarian machine Photos author Graphic Desion carla Kunz Functions Throttle elevator rudder ailerons Type RC Sportltrainer Wingspan 61 inches Engine 40-46 two-stroke Flying weight 6 pounds approx Construction Built-up Covering/finish Silkspan dope Radio installation Battery under receiverthey share foam sleeve Recharge aileron connectors stored under rubber band use accommodate stab actually piece cut down its center area maybe inch width reinforced plywood inlays both sides Make sure cutout rudder clears elevator full right full left rudder Use aliphatic glue attach hinges will seize up throw gets works Pin Klett-type hinges round toothpicks Checking set roll wing relative elevator accurately done eyeballing model rear see elevator touches both tips down dihedral-angle wing using trailing edge stab elevator trailing edge wing ailerons reference elements another reason dry fitting parts before final hinging Fuselage Cut two side panels medium sheet balsa Cut Y32 plywood doublers epoxy inside faces side panels sure make right side left side plywood indications plans front back wing saddle cut Lite Ply side portions what amounts formers two stations Note plans crossmembers formers cut t balsa sheet except holddown structures made raft plywood battery bay faced A2 plywood inside firewall raft plywood has 10 downthrust built sides top firewall beefed up A6 plywood extending maybe inch behind L extending under fuel tank floor top edge serves cleat support A6 plywood floor Note front barrier restraining tank leaving space two inches between front tank inside face firewall aware front end fuselage back far doublers gently tapered bending curvature empennage no doublers resist distort taper helps keep bending down June1997 11 Dry-fitting empennage progress Allows linkage Hatch removedlines linkages exposed service Steering installed points directly control horns linkage entrapped can slide horizontally steering arm rotates Clips hold 1/32 plywood inlays place elevator until epoxy cures Adds deflection strength important area helps link elevator sides Tank floor 1/16 plywood a barrier front Front wing hold-down dowel /16 diameter holes drilled blind nuts installed prior attachment firewall fuselage graceful contour extra-long tail blocking gives stab fin solid base gluing main gear wheels mounted legs made hacksawing Great Planes 40-size aluminum gear two parts flattening upper bends rebending bolting resulting legs aircraft plywood gear support exactly leisure building have heavy duty vise solid workbench may need little help chore inlays middle area elevator bottom rudder cut tA2 plywood areas worked sanded down t/i2 using ruler guide keep edges cut-down area straight plywood pieces epoxied surfaces held down securely place ordinary office binder clips until epoxy has cured Before closing belly empennage install elevator rudder linkage rudder elevator dry fitted linkage can installed pointing straight horns inside antenna desired scavenge tube flexcable set route back through length tail antenna will thread binding Covering The Bushily designed permit use doped-on silkspan familiar material silk like fibrous tissue paper Give balsa surfaces three coats clear dope Cut pieces silkspan needed cover surfaces Just prior applying piece wet touching down onto wet paper towels bottom flat baking pan soft bristle brush paint wet tissue onto surface clear dope dope strikes through silkspan sticks surface water dry water evaporates shrinking silkspan tight smooth surface hides grain wood surface will bag wrinkle color coats applied maximum lightness go easy color coats Always apply dope well-ventilated workspace like outdoors nice day battery receiver taped together couple turns masking tape receiver top terminals exposed little piece corrugated cardboard sandwiched between pack encased single foamrubber sleeve secured bay built fuselage purpose compact vibration protection battery receiver has used times over years problems electronic otherwise fuel tank located back leverage arm center fuel weight balance point short #possible keep balance point creeping rearward fuel burned off flight Wrap terrycloth toweling around tank tape place continuous-coverage masking tape gives unit slick outside surface slides nicely place bulking up too large space gives adequate protection against fuel frothing Note throttle linkage passes right tank steering linkage under tank floor accessible through /s Lite Ply hatch under nose Preflight Be sure balance point significantly behind point indicated plans Tail-heavy bad news Balance model roll placing skid tabletop supporting front end spinner adding weight high wingtip normally needed offset imbalance side-mounted muffler Flying I will spare enthusiasm designer own efforts Built straight Bushily will compare favorably other trainers its size power its up blue ground considerably less troublesome accommodating les Day 6127 Knollwood Dr Falls Church VA 22041 Safe ana Lasy Rt Flying has favorite beginning pilots instructors six step tested program completely presented easy understand guide Chapters include Aerodynamics Selecting trainer plane c flight orming take offs Landing patterns ly landing plane Leaming about Safety Cost $995 Building Flying RC Sailpianes pa Electric Gliders explores intricacies different type K/C flying Chapters include Landing methods Thermal flying Slope soaring Operating electric motors power systems Choosing batteries charging Building tips techniques Cost $1195 Call Nighthawk Publishing 1-800-390-HAWK Send Check Money Order P 0 Box 15019 Colorado Springs CO 80935 RIC Sport Competition Aerobatics comprehensive manual takes pilot exciting world RC aerobatics intricacies acrobatic flight presented easy understand steps have proven time again under actual traioing conditions Chapters include Choosing aerobatic airplanes o selection sting precisely trimming airplanes ral aerobatic maneuvers detailed instructions Contest preparation actual competition tips Cost $1395 Alto available pocket guide containing reproduction of acrobatic maneuvers Cost $299 Shipping & Handling charge $250 added book purchased 14 Model Aviation
Edition: Model Aviation - 1997/06
Page Numbers: 8, 10, 11, 14
Edition: Model Aviation - 1997/06
Page Numbers: 8, 10, 11, 14
Functional 46powered model just fun FOR SOME FLIERS participation relatively basic level acrobatic skill enough work put something supposed fun Bushfly put together lust fun fraternity mind absence cowl semi ultralight configuration resulted effort keep model simple possible However structural details complicated necessary hold finished product up what consider reasonably decent standard quality based observation experiences field over years such detail 17-inch wheel-to wheel stance main gear Its purpose give high-wing trainer same ground-handling stability low-wing model main gear mounted wide apart normally found Pattern model example overshot landing Bushfly can circled up still speed rollout tipping up grounding prop Another feature involves little extra building effort 1/32 plywood inlay both sides middle area elevator bottom area rudder gives firm no-slop footing horns adds strength deflection needed leaves balsa core clear easy hinge-slotting prevents warpage/splitting adds insignificant amount weight Bushfly uses scrap foam fillers open spaces center section otherwise fully sheeted frame wing way borrowing simplicity fully bridged strength conventional foam-core wing root joint center section weight glue coated both sides conventionally constructed foam-core wing panel Bushfly weighs about six pounds dry give take including soft engine mount four standard servos arrow-shafttype linkage elevator rudder aircraft plywood landing gear spreader 46 engine tank 2-inch spinner prop CONSTRUCTION As project read way through construction text turn brain before studying plans use thin cyanoacrylate CyA glue fast assembly put waxed paper under work lest discover structure has glued itself down firmly workbench Some suppliers Lone Star instance sell 4-6-lb very light sheet Unless otherwise noted blocking sheet Bushfly thicker /s extra-light few pennies some suppliers will select dead straight pieces requested such um balsa stab elevator Wing Make right left panel Construct frames integral bottom skins gluing individual framing members down skin build Trim back edge skin sharp X-Acto knife metal straightedge least 30 inches long supplier sands wing skins down thin side use /32 otherwise use A6 Make rib template stiff card stock scrap 2 plywood sharp pair tin snips makes short work trimming thin plywood two ribs sides center section cut 3A6 light balsa others cut medium-weight 3A2 cut stack make sure match up Notches spars first five inboard ribs er accept /g x 3/ spar doublers main spars i/is x 3/ hard straight-grained balsa Place bottom spar its doubler position glue ribs place install top spars Notice back five inches 8 Model Aviation om wing surface flat plane Weight back five inches down flat workbench build twist-free wing panel 1/ medium balsa front trimmer should match up closely front cut rib back cut rib butt-jointed against trailing edge glued flush back edge bottom skin Leave 13h inches skin spars trailing edge extending root end panel use building center section Save rib template later use laying out wing saddle fits wing holds 00 incidence assembling two panels form one-piece wing aware center section filled between framing members scrap foam small pieces foam can blocked out hacksaw blade sanded contour coarse sanding paddle hot-wire cutting necessary gluing foam adjacent use epoxy aliphatic-resin glues some glues chemically incompatible foam will make mess 1 h-back center section faced A6 plywood cut match dihedral drilled accommodate /6 front hold-down dowel Taper back end dowel pencil sharpener tapered back end anchored hole drilled front A6 plywood scab reinforcement spars meet root center Predrill holes plywood parts before gluing place back scab root joint spars /32 plywood also serves front face aileron servo well back face well also 1/32 plywood Set up two panels jig otherwise supported such no twist within panel other root joint held 00 incidence correct dihedral angle Complete center section installing dowel foam fills sure bottom skins fit neatly root foam fills meet form root joint glued 30-minute epoxy Glue A6 vertical-grained spar webbing place before adding top wing skin Use slow-curing glue will give time apply top framing surfaces entire panel before placing skin position taping down top edge front trimmer fully sheeted wing will take permanent stiff setincluding twistso sure true Reinforce center section fourinch glass cloth epoxy rounding leading edge wing panels good idea mark line zero-incidence plane intersects front face use softlead pencil Round up down line maintain incidence integrity wing Use same principle form tips Adjustment wing incidence can done shimming sanding back edge wing saddle Any such adjustment should feathered front saddle since wing fixed non-adjustable position front holddown dowel Doublers fitted maybe 1/s inch below saddle cut possible need adjustment mind Balsa sands easily plywood doesnt ailerons cut 3/ x 2 aileron stock trimmed 3/ x 1 will leave trailing edge just tad less 3/ts thick Leave wayits good insurance against flutter Use Goldberg equal long heavy-duty /8 aileron horn wires -20 tap drill set will needed put threaded holes rear hold-down blocks can cut raft plywood 3/ maple Tail Surfaces rudder fin cut 3/ sheet stab elevator sheet inlays middle elevator bottom rudder cut 1A2 plywood plywood pieces epoxied surfaces held down securely office binder clips epoxy cures Install hinges elevator rudder ailerons Slot stab fin wing control surfaces can dry fitted Note cut-out rudder 10 Model Aviation owl wide-stance main gear slender tail section OS 46 soft mount Bushfly what author calls utilitarian machine Photos author Graphic Desion carla Kunz Functions Throttle elevator rudder ailerons Type RC Sportltrainer Wingspan 61 inches Engine 40-46 two-stroke Flying weight 6 pounds approx Construction Built-up Covering/finish Silkspan dope Radio installation Battery under receiverthey share foam sleeve Recharge aileron connectors stored under rubber band use accommodate stab actually piece cut down its center area maybe inch width reinforced plywood inlays both sides Make sure cutout rudder clears elevator full right full left rudder Use aliphatic glue attach hinges will seize up throw gets works Pin Klett-type hinges round toothpicks Checking set roll wing relative elevator accurately done eyeballing model rear see elevator touches both tips down dihedral-angle wing using trailing edge stab elevator trailing edge wing ailerons reference elements another reason dry fitting parts before final hinging Fuselage Cut two side panels medium sheet balsa Cut Y32 plywood doublers epoxy inside faces side panels sure make right side left side plywood indications plans front back wing saddle cut Lite Ply side portions what amounts formers two stations Note plans crossmembers formers cut t balsa sheet except holddown structures made raft plywood battery bay faced A2 plywood inside firewall raft plywood has 10 downthrust built sides top firewall beefed up A6 plywood extending maybe inch behind L extending under fuel tank floor top edge serves cleat support A6 plywood floor Note front barrier restraining tank leaving space two inches between front tank inside face firewall aware front end fuselage back far doublers gently tapered bending curvature empennage no doublers resist distort taper helps keep bending down June1997 11 Dry-fitting empennage progress Allows linkage Hatch removedlines linkages exposed service Steering installed points directly control horns linkage entrapped can slide horizontally steering arm rotates Clips hold 1/32 plywood inlays place elevator until epoxy cures Adds deflection strength important area helps link elevator sides Tank floor 1/16 plywood a barrier front Front wing hold-down dowel /16 diameter holes drilled blind nuts installed prior attachment firewall fuselage graceful contour extra-long tail blocking gives stab fin solid base gluing main gear wheels mounted legs made hacksawing Great Planes 40-size aluminum gear two parts flattening upper bends rebending bolting resulting legs aircraft plywood gear support exactly leisure building have heavy duty vise solid workbench may need little help chore inlays middle area elevator bottom rudder cut tA2 plywood areas worked sanded down t/i2 using ruler guide keep edges cut-down area straight plywood pieces epoxied surfaces held down securely place ordinary office binder clips until epoxy has cured Before closing belly empennage install elevator rudder linkage rudder elevator dry fitted linkage can installed pointing straight horns inside antenna desired scavenge tube flexcable set route back through length tail antenna will thread binding Covering The Bushily designed permit use doped-on silkspan familiar material silk like fibrous tissue paper Give balsa surfaces three coats clear dope Cut pieces silkspan needed cover surfaces Just prior applying piece wet touching down onto wet paper towels bottom flat baking pan soft bristle brush paint wet tissue onto surface clear dope dope strikes through silkspan sticks surface water dry water evaporates shrinking silkspan tight smooth surface hides grain wood surface will bag wrinkle color coats applied maximum lightness go easy color coats Always apply dope well-ventilated workspace like outdoors nice day battery receiver taped together couple turns masking tape receiver top terminals exposed little piece corrugated cardboard sandwiched between pack encased single foamrubber sleeve secured bay built fuselage purpose compact vibration protection battery receiver has used times over years problems electronic otherwise fuel tank located back leverage arm center fuel weight balance point short #possible keep balance point creeping rearward fuel burned off flight Wrap terrycloth toweling around tank tape place continuous-coverage masking tape gives unit slick outside surface slides nicely place bulking up too large space gives adequate protection against fuel frothing Note throttle linkage passes right tank steering linkage under tank floor accessible through /s Lite Ply hatch under nose Preflight Be sure balance point significantly behind point indicated plans Tail-heavy bad news Balance model roll placing skid tabletop supporting front end spinner adding weight high wingtip normally needed offset imbalance side-mounted muffler Flying I will spare enthusiasm designer own efforts Built straight Bushily will compare favorably other trainers its size power its up blue ground considerably less troublesome accommodating les Day 6127 Knollwood Dr Falls Church VA 22041 Safe ana Lasy Rt Flying has favorite beginning pilots instructors six step tested program completely presented easy understand guide Chapters include Aerodynamics Selecting trainer plane c flight orming take offs Landing patterns ly landing plane Leaming about Safety Cost $995 Building Flying RC Sailpianes pa Electric Gliders explores intricacies different type K/C flying Chapters include Landing methods Thermal flying Slope soaring Operating electric motors power systems Choosing batteries charging Building tips techniques Cost $1195 Call Nighthawk Publishing 1-800-390-HAWK Send Check Money Order P 0 Box 15019 Colorado Springs CO 80935 RIC Sport Competition Aerobatics comprehensive manual takes pilot exciting world RC aerobatics intricacies acrobatic flight presented easy understand steps have proven time again under actual traioing conditions Chapters include Choosing aerobatic airplanes o selection sting precisely trimming airplanes ral aerobatic maneuvers detailed instructions Contest preparation actual competition tips Cost $1395 Alto available pocket guide containing reproduction of acrobatic maneuvers Cost $299 Shipping & Handling charge $250 added book purchased 14 Model Aviation
Edition: Model Aviation - 1997/06
Page Numbers: 8, 10, 11, 14
Functional 46powered model just fun FOR SOME FLIERS participation relatively basic level acrobatic skill enough work put something supposed fun Bushfly put together lust fun fraternity mind absence cowl semi ultralight configuration resulted effort keep model simple possible However structural details complicated necessary hold finished product up what consider reasonably decent standard quality based observation experiences field over years such detail 17-inch wheel-to wheel stance main gear Its purpose give high-wing trainer same ground-handling stability low-wing model main gear mounted wide apart normally found Pattern model example overshot landing Bushfly can circled up still speed rollout tipping up grounding prop Another feature involves little extra building effort 1/32 plywood inlay both sides middle area elevator bottom area rudder gives firm no-slop footing horns adds strength deflection needed leaves balsa core clear easy hinge-slotting prevents warpage/splitting adds insignificant amount weight Bushfly uses scrap foam fillers open spaces center section otherwise fully sheeted frame wing way borrowing simplicity fully bridged strength conventional foam-core wing root joint center section weight glue coated both sides conventionally constructed foam-core wing panel Bushfly weighs about six pounds dry give take including soft engine mount four standard servos arrow-shafttype linkage elevator rudder aircraft plywood landing gear spreader 46 engine tank 2-inch spinner prop CONSTRUCTION As project read way through construction text turn brain before studying plans use thin cyanoacrylate CyA glue fast assembly put waxed paper under work lest discover structure has glued itself down firmly workbench Some suppliers Lone Star instance sell 4-6-lb very light sheet Unless otherwise noted blocking sheet Bushfly thicker /s extra-light few pennies some suppliers will select dead straight pieces requested such um balsa stab elevator Wing Make right left panel Construct frames integral bottom skins gluing individual framing members down skin build Trim back edge skin sharp X-Acto knife metal straightedge least 30 inches long supplier sands wing skins down thin side use /32 otherwise use A6 Make rib template stiff card stock scrap 2 plywood sharp pair tin snips makes short work trimming thin plywood two ribs sides center section cut 3A6 light balsa others cut medium-weight 3A2 cut stack make sure match up Notches spars first five inboard ribs er accept /g x 3/ spar doublers main spars i/is x 3/ hard straight-grained balsa Place bottom spar its doubler position glue ribs place install top spars Notice back five inches 8 Model Aviation om wing surface flat plane Weight back five inches down flat workbench build twist-free wing panel 1/ medium balsa front trimmer should match up closely front cut rib back cut rib butt-jointed against trailing edge glued flush back edge bottom skin Leave 13h inches skin spars trailing edge extending root end panel use building center section Save rib template later use laying out wing saddle fits wing holds 00 incidence assembling two panels form one-piece wing aware center section filled between framing members scrap foam small pieces foam can blocked out hacksaw blade sanded contour coarse sanding paddle hot-wire cutting necessary gluing foam adjacent use epoxy aliphatic-resin glues some glues chemically incompatible foam will make mess 1 h-back center section faced A6 plywood cut match dihedral drilled accommodate /6 front hold-down dowel Taper back end dowel pencil sharpener tapered back end anchored hole drilled front A6 plywood scab reinforcement spars meet root center Predrill holes plywood parts before gluing place back scab root joint spars /32 plywood also serves front face aileron servo well back face well also 1/32 plywood Set up two panels jig otherwise supported such no twist within panel other root joint held 00 incidence correct dihedral angle Complete center section installing dowel foam fills sure bottom skins fit neatly root foam fills meet form root joint glued 30-minute epoxy Glue A6 vertical-grained spar webbing place before adding top wing skin Use slow-curing glue will give time apply top framing surfaces entire panel before placing skin position taping down top edge front trimmer fully sheeted wing will take permanent stiff setincluding twistso sure true Reinforce center section fourinch glass cloth epoxy rounding leading edge wing panels good idea mark line zero-incidence plane intersects front face use softlead pencil Round up down line maintain incidence integrity wing Use same principle form tips Adjustment wing incidence can done shimming sanding back edge wing saddle Any such adjustment should feathered front saddle since wing fixed non-adjustable position front holddown dowel Doublers fitted maybe 1/s inch below saddle cut possible need adjustment mind Balsa sands easily plywood doesnt ailerons cut 3/ x 2 aileron stock trimmed 3/ x 1 will leave trailing edge just tad less 3/ts thick Leave wayits good insurance against flutter Use Goldberg equal long heavy-duty /8 aileron horn wires -20 tap drill set will needed put threaded holes rear hold-down blocks can cut raft plywood 3/ maple Tail Surfaces rudder fin cut 3/ sheet stab elevator sheet inlays middle elevator bottom rudder cut 1A2 plywood plywood pieces epoxied surfaces held down securely office binder clips epoxy cures Install hinges elevator rudder ailerons Slot stab fin wing control surfaces can dry fitted Note cut-out rudder 10 Model Aviation owl wide-stance main gear slender tail section OS 46 soft mount Bushfly what author calls utilitarian machine Photos author Graphic Desion carla Kunz Functions Throttle elevator rudder ailerons Type RC Sportltrainer Wingspan 61 inches Engine 40-46 two-stroke Flying weight 6 pounds approx Construction Built-up Covering/finish Silkspan dope Radio installation Battery under receiverthey share foam sleeve Recharge aileron connectors stored under rubber band use accommodate stab actually piece cut down its center area maybe inch width reinforced plywood inlays both sides Make sure cutout rudder clears elevator full right full left rudder Use aliphatic glue attach hinges will seize up throw gets works Pin Klett-type hinges round toothpicks Checking set roll wing relative elevator accurately done eyeballing model rear see elevator touches both tips down dihedral-angle wing using trailing edge stab elevator trailing edge wing ailerons reference elements another reason dry fitting parts before final hinging Fuselage Cut two side panels medium sheet balsa Cut Y32 plywood doublers epoxy inside faces side panels sure make right side left side plywood indications plans front back wing saddle cut Lite Ply side portions what amounts formers two stations Note plans crossmembers formers cut t balsa sheet except holddown structures made raft plywood battery bay faced A2 plywood inside firewall raft plywood has 10 downthrust built sides top firewall beefed up A6 plywood extending maybe inch behind L extending under fuel tank floor top edge serves cleat support A6 plywood floor Note front barrier restraining tank leaving space two inches between front tank inside face firewall aware front end fuselage back far doublers gently tapered bending curvature empennage no doublers resist distort taper helps keep bending down June1997 11 Dry-fitting empennage progress Allows linkage Hatch removedlines linkages exposed service Steering installed points directly control horns linkage entrapped can slide horizontally steering arm rotates Clips hold 1/32 plywood inlays place elevator until epoxy cures Adds deflection strength important area helps link elevator sides Tank floor 1/16 plywood a barrier front Front wing hold-down dowel /16 diameter holes drilled blind nuts installed prior attachment firewall fuselage graceful contour extra-long tail blocking gives stab fin solid base gluing main gear wheels mounted legs made hacksawing Great Planes 40-size aluminum gear two parts flattening upper bends rebending bolting resulting legs aircraft plywood gear support exactly leisure building have heavy duty vise solid workbench may need little help chore inlays middle area elevator bottom rudder cut tA2 plywood areas worked sanded down t/i2 using ruler guide keep edges cut-down area straight plywood pieces epoxied surfaces held down securely place ordinary office binder clips until epoxy has cured Before closing belly empennage install elevator rudder linkage rudder elevator dry fitted linkage can installed pointing straight horns inside antenna desired scavenge tube flexcable set route back through length tail antenna will thread binding Covering The Bushily designed permit use doped-on silkspan familiar material silk like fibrous tissue paper Give balsa surfaces three coats clear dope Cut pieces silkspan needed cover surfaces Just prior applying piece wet touching down onto wet paper towels bottom flat baking pan soft bristle brush paint wet tissue onto surface clear dope dope strikes through silkspan sticks surface water dry water evaporates shrinking silkspan tight smooth surface hides grain wood surface will bag wrinkle color coats applied maximum lightness go easy color coats Always apply dope well-ventilated workspace like outdoors nice day battery receiver taped together couple turns masking tape receiver top terminals exposed little piece corrugated cardboard sandwiched between pack encased single foamrubber sleeve secured bay built fuselage purpose compact vibration protection battery receiver has used times over years problems electronic otherwise fuel tank located back leverage arm center fuel weight balance point short #possible keep balance point creeping rearward fuel burned off flight Wrap terrycloth toweling around tank tape place continuous-coverage masking tape gives unit slick outside surface slides nicely place bulking up too large space gives adequate protection against fuel frothing Note throttle linkage passes right tank steering linkage under tank floor accessible through /s Lite Ply hatch under nose Preflight Be sure balance point significantly behind point indicated plans Tail-heavy bad news Balance model roll placing skid tabletop supporting front end spinner adding weight high wingtip normally needed offset imbalance side-mounted muffler Flying I will spare enthusiasm designer own efforts Built straight Bushily will compare favorably other trainers its size power its up blue ground considerably less troublesome accommodating les Day 6127 Knollwood Dr Falls Church VA 22041 Safe ana Lasy Rt Flying has favorite beginning pilots instructors six step tested program completely presented easy understand guide Chapters include Aerodynamics Selecting trainer plane c flight orming take offs Landing patterns ly landing plane Leaming about Safety Cost $995 Building Flying RC Sailpianes pa Electric Gliders explores intricacies different type K/C flying Chapters include Landing methods Thermal flying Slope soaring Operating electric motors power systems Choosing batteries charging Building tips techniques Cost $1195 Call Nighthawk Publishing 1-800-390-HAWK Send Check Money Order P 0 Box 15019 Colorado Springs CO 80935 RIC Sport Competition Aerobatics comprehensive manual takes pilot exciting world RC aerobatics intricacies acrobatic flight presented easy understand steps have proven time again under actual traioing conditions Chapters include Choosing aerobatic airplanes o selection sting precisely trimming airplanes ral aerobatic maneuvers detailed instructions Contest preparation actual competition tips Cost $1395 Alto available pocket guide containing reproduction of acrobatic maneuvers Cost $299 Shipping & Handling charge $250 added book purchased 14 Model Aviation
Edition: Model Aviation - 1997/06
Page Numbers: 8, 10, 11, 14
Functional 46powered model just fun FOR SOME FLIERS participation relatively basic level acrobatic skill enough work put something supposed fun Bushfly put together lust fun fraternity mind absence cowl semi ultralight configuration resulted effort keep model simple possible However structural details complicated necessary hold finished product up what consider reasonably decent standard quality based observation experiences field over years such detail 17-inch wheel-to wheel stance main gear Its purpose give high-wing trainer same ground-handling stability low-wing model main gear mounted wide apart normally found Pattern model example overshot landing Bushfly can circled up still speed rollout tipping up grounding prop Another feature involves little extra building effort 1/32 plywood inlay both sides middle area elevator bottom area rudder gives firm no-slop footing horns adds strength deflection needed leaves balsa core clear easy hinge-slotting prevents warpage/splitting adds insignificant amount weight Bushfly uses scrap foam fillers open spaces center section otherwise fully sheeted frame wing way borrowing simplicity fully bridged strength conventional foam-core wing root joint center section weight glue coated both sides conventionally constructed foam-core wing panel Bushfly weighs about six pounds dry give take including soft engine mount four standard servos arrow-shafttype linkage elevator rudder aircraft plywood landing gear spreader 46 engine tank 2-inch spinner prop CONSTRUCTION As project read way through construction text turn brain before studying plans use thin cyanoacrylate CyA glue fast assembly put waxed paper under work lest discover structure has glued itself down firmly workbench Some suppliers Lone Star instance sell 4-6-lb very light sheet Unless otherwise noted blocking sheet Bushfly thicker /s extra-light few pennies some suppliers will select dead straight pieces requested such um balsa stab elevator Wing Make right left panel Construct frames integral bottom skins gluing individual framing members down skin build Trim back edge skin sharp X-Acto knife metal straightedge least 30 inches long supplier sands wing skins down thin side use /32 otherwise use A6 Make rib template stiff card stock scrap 2 plywood sharp pair tin snips makes short work trimming thin plywood two ribs sides center section cut 3A6 light balsa others cut medium-weight 3A2 cut stack make sure match up Notches spars first five inboard ribs er accept /g x 3/ spar doublers main spars i/is x 3/ hard straight-grained balsa Place bottom spar its doubler position glue ribs place install top spars Notice back five inches 8 Model Aviation om wing surface flat plane Weight back five inches down flat workbench build twist-free wing panel 1/ medium balsa front trimmer should match up closely front cut rib back cut rib butt-jointed against trailing edge glued flush back edge bottom skin Leave 13h inches skin spars trailing edge extending root end panel use building center section Save rib template later use laying out wing saddle fits wing holds 00 incidence assembling two panels form one-piece wing aware center section filled between framing members scrap foam small pieces foam can blocked out hacksaw blade sanded contour coarse sanding paddle hot-wire cutting necessary gluing foam adjacent use epoxy aliphatic-resin glues some glues chemically incompatible foam will make mess 1 h-back center section faced A6 plywood cut match dihedral drilled accommodate /6 front hold-down dowel Taper back end dowel pencil sharpener tapered back end anchored hole drilled front A6 plywood scab reinforcement spars meet root center Predrill holes plywood parts before gluing place back scab root joint spars /32 plywood also serves front face aileron servo well back face well also 1/32 plywood Set up two panels jig otherwise supported such no twist within panel other root joint held 00 incidence correct dihedral angle Complete center section installing dowel foam fills sure bottom skins fit neatly root foam fills meet form root joint glued 30-minute epoxy Glue A6 vertical-grained spar webbing place before adding top wing skin Use slow-curing glue will give time apply top framing surfaces entire panel before placing skin position taping down top edge front trimmer fully sheeted wing will take permanent stiff setincluding twistso sure true Reinforce center section fourinch glass cloth epoxy rounding leading edge wing panels good idea mark line zero-incidence plane intersects front face use softlead pencil Round up down line maintain incidence integrity wing Use same principle form tips Adjustment wing incidence can done shimming sanding back edge wing saddle Any such adjustment should feathered front saddle since wing fixed non-adjustable position front holddown dowel Doublers fitted maybe 1/s inch below saddle cut possible need adjustment mind Balsa sands easily plywood doesnt ailerons cut 3/ x 2 aileron stock trimmed 3/ x 1 will leave trailing edge just tad less 3/ts thick Leave wayits good insurance against flutter Use Goldberg equal long heavy-duty /8 aileron horn wires -20 tap drill set will needed put threaded holes rear hold-down blocks can cut raft plywood 3/ maple Tail Surfaces rudder fin cut 3/ sheet stab elevator sheet inlays middle elevator bottom rudder cut 1A2 plywood plywood pieces epoxied surfaces held down securely office binder clips epoxy cures Install hinges elevator rudder ailerons Slot stab fin wing control surfaces can dry fitted Note cut-out rudder 10 Model Aviation owl wide-stance main gear slender tail section OS 46 soft mount Bushfly what author calls utilitarian machine Photos author Graphic Desion carla Kunz Functions Throttle elevator rudder ailerons Type RC Sportltrainer Wingspan 61 inches Engine 40-46 two-stroke Flying weight 6 pounds approx Construction Built-up Covering/finish Silkspan dope Radio installation Battery under receiverthey share foam sleeve Recharge aileron connectors stored under rubber band use accommodate stab actually piece cut down its center area maybe inch width reinforced plywood inlays both sides Make sure cutout rudder clears elevator full right full left rudder Use aliphatic glue attach hinges will seize up throw gets works Pin Klett-type hinges round toothpicks Checking set roll wing relative elevator accurately done eyeballing model rear see elevator touches both tips down dihedral-angle wing using trailing edge stab elevator trailing edge wing ailerons reference elements another reason dry fitting parts before final hinging Fuselage Cut two side panels medium sheet balsa Cut Y32 plywood doublers epoxy inside faces side panels sure make right side left side plywood indications plans front back wing saddle cut Lite Ply side portions what amounts formers two stations Note plans crossmembers formers cut t balsa sheet except holddown structures made raft plywood battery bay faced A2 plywood inside firewall raft plywood has 10 downthrust built sides top firewall beefed up A6 plywood extending maybe inch behind L extending under fuel tank floor top edge serves cleat support A6 plywood floor Note front barrier restraining tank leaving space two inches between front tank inside face firewall aware front end fuselage back far doublers gently tapered bending curvature empennage no doublers resist distort taper helps keep bending down June1997 11 Dry-fitting empennage progress Allows linkage Hatch removedlines linkages exposed service Steering installed points directly control horns linkage entrapped can slide horizontally steering arm rotates Clips hold 1/32 plywood inlays place elevator until epoxy cures Adds deflection strength important area helps link elevator sides Tank floor 1/16 plywood a barrier front Front wing hold-down dowel /16 diameter holes drilled blind nuts installed prior attachment firewall fuselage graceful contour extra-long tail blocking gives stab fin solid base gluing main gear wheels mounted legs made hacksawing Great Planes 40-size aluminum gear two parts flattening upper bends rebending bolting resulting legs aircraft plywood gear support exactly leisure building have heavy duty vise solid workbench may need little help chore inlays middle area elevator bottom rudder cut tA2 plywood areas worked sanded down t/i2 using ruler guide keep edges cut-down area straight plywood pieces epoxied surfaces held down securely place ordinary office binder clips until epoxy has cured Before closing belly empennage install elevator rudder linkage rudder elevator dry fitted linkage can installed pointing straight horns inside antenna desired scavenge tube flexcable set route back through length tail antenna will thread binding Covering The Bushily designed permit use doped-on silkspan familiar material silk like fibrous tissue paper Give balsa surfaces three coats clear dope Cut pieces silkspan needed cover surfaces Just prior applying piece wet touching down onto wet paper towels bottom flat baking pan soft bristle brush paint wet tissue onto surface clear dope dope strikes through silkspan sticks surface water dry water evaporates shrinking silkspan tight smooth surface hides grain wood surface will bag wrinkle color coats applied maximum lightness go easy color coats Always apply dope well-ventilated workspace like outdoors nice day battery receiver taped together couple turns masking tape receiver top terminals exposed little piece corrugated cardboard sandwiched between pack encased single foamrubber sleeve secured bay built fuselage purpose compact vibration protection battery receiver has used times over years problems electronic otherwise fuel tank located back leverage arm center fuel weight balance point short #possible keep balance point creeping rearward fuel burned off flight Wrap terrycloth toweling around tank tape place continuous-coverage masking tape gives unit slick outside surface slides nicely place bulking up too large space gives adequate protection against fuel frothing Note throttle linkage passes right tank steering linkage under tank floor accessible through /s Lite Ply hatch under nose Preflight Be sure balance point significantly behind point indicated plans Tail-heavy bad news Balance model roll placing skid tabletop supporting front end spinner adding weight high wingtip normally needed offset imbalance side-mounted muffler Flying I will spare enthusiasm designer own efforts Built straight Bushily will compare favorably other trainers its size power its up blue ground considerably less troublesome accommodating les Day 6127 Knollwood Dr Falls Church VA 22041 Safe ana Lasy Rt Flying has favorite beginning pilots instructors six step tested program completely presented easy understand guide Chapters include Aerodynamics Selecting trainer plane c flight orming take offs Landing patterns ly landing plane Leaming about Safety Cost $995 Building Flying RC Sailpianes pa Electric Gliders explores intricacies different type K/C flying Chapters include Landing methods Thermal flying Slope soaring Operating electric motors power systems Choosing batteries charging Building tips techniques Cost $1195 Call Nighthawk Publishing 1-800-390-HAWK Send Check Money Order P 0 Box 15019 Colorado Springs CO 80935 RIC Sport Competition Aerobatics comprehensive manual takes pilot exciting world RC aerobatics intricacies acrobatic flight presented easy understand steps have proven time again under actual traioing conditions Chapters include Choosing aerobatic airplanes o selection sting precisely trimming airplanes ral aerobatic maneuvers detailed instructions Contest preparation actual competition tips Cost $1395 Alto available pocket guide containing reproduction of acrobatic maneuvers Cost $299 Shipping & Handling charge $250 added book purchased 14 Model Aviation
