ON NOVEMBER 8 1961 experimental airplane crashed hometown Flint MI Being three years old time didnt think much event Years later attending University Michigan learned plane friend helped its wing tunnel test still didnt think much about 1980 EAA Convention Osh kosh digging through some ancient Sport Aviations found Dean Delt Air 250 covers love model especially attractive Peanut Scale event because 13-in span gives quite bit wing area motor length room detailing first glance might think model would unstable because 1 has no horizontal stabilizer 2 propeller back 3 full-size planes total flight time less 30 seconds Participation Northrop Flying Wing Contest has shown tailless planes inherently unstable once trimmed Regarding propeller location first Scale model Lesher Teal pusher ConFull-Size Plan Pages 90-91 ES Lynne Buben trary concerns flying would compared backing trailer far stability concerned very stable fact propellers vertical area behind center gravity CG has some fin effect As far model hav ing scale flight performance its first flight longer original planes total air time model proved very stable flier Construction wings elevons reflex tabs built separate parts ease trimming construction Twin spars made /46 sq balsa add tor sional rigidity wing reflex tabs formed cutting shape /32 sheet soaking water rubberbanding onto applesauce-sized jar After dry sand taper trailing edge cover white tissue fuselage formed running sq stringers between bulkheads nose segment just forward canopy composed crescent-shaped /32 sheet balsa cutouts form compound curve can covered two sections time very tip nose carved solid balsa nose hook inserted removable piece makes motor stuff ing much easier make model look really snazzy make pitot boom round toothpick covered red tissue have healthy respect other peoples airplanes eyes leave off during flight Once pieces covered white tissue shrunk alcohol time assemble model fin can attached topmost fuselage string er poking holes through tissue flowing Hot Stuff junction join wings fuselage first tem porarily cut away tissue vicinity wing attached Glue inside rib middle stringer spars Bulkheads D E Finally rejoin tissue fuselage cutting first flight unique advanced home-built aircraft result ed tragedy its designerlbuilder Herbert F Deanfor reas ons still unknown Its delight Peanut Scale 64 Model Aviation out profile wing elevons must joined wing about 150 up deflection reflex tabs necessary tailless airplane fly color trim can now added cutting strips red blue tissue attaching model 50-50 mixture dope thinner ensure airplane its pretty stripes part company first launch brush thinner over trim Because original airplane re tractable landing gear chose model plane gear up configuration may wish add tail skid pro tect propeller propeller made /32 sheet balsa cut two identical paddle shapes about 2Y4 long 1 /2 wide Soak water rubberband around glass tilted about 15 vertical Make hub approximately X6 glue dried propeller blades onto hub about 150 pitch 250 dihedral Make sure concave side blades aft run wire through around hub Push seg ment copper Hot Stuff tubing tail block making sure wire pro peller shaft will able turn freely thrust Delt-Air should 0-0 directed straight nose hook used two small beads between propeller hub tail block applied drop oil reduce friction word about instrument panels no bonus points cockpit detail Peanut rules size canopy makes instrument panel improvement general impression made instrument panel out paper glued it made model much realistic altimeter set 820 feet ground altitude Flint Bishop Airport Save making canopy last because some plastics cloud presence dope fumes Use sheet plastic similar thickness found surrounding cosmetics packaged Hot Stuff plastic too thick model will heavy too thin likely tear formed experimented three thick nesses purchased hobby store found two samples clouded near Hot Stuff near thinned dope doing field repairs careful use other glues near canopy first step making canopy carve block same shape canopy sand smooth cover block coat thin dope sand dope again sand extrafine sandpaper procedure eliminates wood grain texture Make sure final coat dope completely dry before proceeding satisfied finish canopy block make frame slightly bigger block attach sheet plastic frame adhesive tape Use heat gun soften Continued page 167 January1985 65 Propeller dihedral necessary blades clear elevons f Note strument panel especially needed model type Twin spars prevent warps author shows launch Dean Delt-Air 250 Peanut Hold fuselage right hand prop left model should banked tothe left siightiyfor launching Trim made modeling tissue Stripes numbers antigiare panel colored red leading edges wing fin light blue Flight adjusting isnt difficult M52 Thermal & Slope Graphite reinforcing Rudder & Full Flying Stab Wing Span 52 Airfoil Eppler 387 Flying Weight 12-13 oz Wing Loading 53- 57 oz/sqft can high started LINDSEY MICRO PRODUCTS IMP 1000 Ultra Light Slope Aileron & Elevator Wing Span 41 Length 285 Airfoil Eppler 211 Flying Weight 13 14 oz Wing Loading 65 75 oz/sqft kits designed putfun sport flying wood construction include hardware needed Both require Two Channel Radio Mini Servos 250 MAH BATT $25OOea includesshipping UPS COD add$165-- cash CAadd 6%tax Dealer lnauiries Invited 160-A N Fairview Ave Suite 104 Goleta CA 93117 805 683 2042 md special Thank RG Moul Editorial Director Aeromodeller 4agazine sharing facts photos report received following letter interest rom Bob Larsh Central Indiana Leromodelers CIA Enclosed old picture Carl }oldberg snapped 1939 Nationals etroit Note holds model look g suspiciously close being large ver ion later-kitted A/B Interceptor snapshot recently found hoto album long-deceased old-time iodeler number copies made engine under magnifying glass oks like standard Brown Jr ound confronted Carl 4 Toledo Trade Show picture le quite amazed see also cognized model immediately aid experimental jobs e period worked two years ying develop good competi machine nothing prob ms never able tame Carl aid engine Brown ery powerful homebuilt motor made n individual Chicago Carl lamented iat return engine asnt sale also commented e able determine optimum esign pylon height configura particular model reem hasized virtues down thrust im should noted Carl also ying Class Interceptor prototype ic 39 Nats resembled 1941 kit iodel very closely recently attended CIA Old imers meets Wright Patterson AFB ayton OH have access small st adequate flying site behind Air orce Museum field mowed turf id fantastic place fly can ar yourself away museum long ough put few Old-Timer flights also pleasure meeting some name brand Old-Timers visit ith relative Bill Haught Old-Timers small groups quality ways high Clarence Haught 3226 Honeysuckle r Coeur dAlene ID 83814 Dean Delt-AirlBuben Continued page 65 film pressing frame around canopy block Remove block cut out canopy console fingers didnt wear gloves using heat gun attach canopy fuselage use toothpick apply Elmers contact cement bottom canopy fuselage glue dries clear press canopy Use thin white detail ing tape around junction wind shield breaks back canopy made paper attached white glue plane now ready fly Flight trimming Start single loop 3A2-in rubber about half times length fuselage Since tail less planes sensitive thrust line location conventional ones trim model glide first gradually crease power glide tests make sure elevons deflected up least 150 wing neither wing has wash-in Wash-in warp results outer airfoils being leading-edge-up board ones Add just enough winds backwards take up slack motor launch hold plane fuselage approximately CG gently push air model pitches up add nose weight pitches down add little clay back fuselage Unless model spirals steeply ground concentrate pitch before moving turn trim model seems very sensitive pitch mean small amounts clay tend make large difference plane just doesnt seem trimma ble add bit up-elevon deflection nose weight try again improves planes stability moving CG forward compensates resulting pitch-down tendency increasing elevons pitch-up torque Conversely plane trimmed lot nose weight gets too heavy try taking out some elevons up-deflection removing some nose weight PRODUCTS FOR THE DISCERNING MODELER Complete Line Exhaust Systems * TunedMuffled Tuned Pipes * Headers Venturi Mufflers * Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems Unsurpassed Workmanshio 8 Performance January1955 167 Want REV- UP Pieps P Average lnventoy 4009 Prep! ever SD Sizes Per 411 Events Now About Custom Tuned Engines P Cembat Raciag Free Flight 5 Sped Ceinpetitien Accessories 5 Parts Pyle, Racing Pattern 5 Sport FF 5 U/C. Rage Inventory! Specialists Custom Ce 1D S Reed Engines Std S R/C Caste Parts Ce Engines Cemplete Inventory Dl Individual Steck Parts Current ZD 5 Medalliea Engines New Parts Fer Discontinued Ce Eagines Rep/ku Orwick 23 29 60 Engines Ignition Engine Accessories Visa 5 MasterCard Welcome Detailed Drochure Send 75V Rustom Kraftsmanship PO 2699 Laguna Nil/s CA 92654 Ph 714130-5162 %e LONS oztaO model Will sensitive flight perturbations will stay up longer Once model trimmed pitch turn trim can added Bank plane slightly left again just few turns motor observe turn ing radius planes does turn warp little left fin deflection plane spirals ground orbit turn gets tighter increase updeflection outside elevon correct spiral adjust fin deflection achieve desirable turn radius After glide trim has established add few turns motor launch same left bank used glide tests plane pitches up add shim between fuselage top tail block pitch-down correction add shim bottom tail block Similarly take out left turn add shim left side tail block vice versa correcting too much right turn Gradually add turns motor sneak up planes full-power per formance maximum turns motor give satisfactory flight times try warping little curvature propeller blades necessary use A-in motor heavier motor will move CO forward compensate taking off some nose weight adding tail weight Dont put off seemingly-com plicated trimming process model flies like didoff boardyou will need nose weight shims warps will see Dean Delt-Air 250 ready forgive worst launch techniquesas long have wound motor right direction Work ArealHux Continued page 67 use department stores confuse aluminum type used shelving aluminum brackets standards may handle load level all-steel units have shown no sign fatigue over past five years Select plug-in bracket locking screw install screw next slot above bracket installations spacing brack ets other wall stud 32 inches adequate supporting model airplanes key tafe shelf mount wall Note weight shelf places pressure screw corner bracket pulling outward wall Plugs will certainly work Molley bolts resist being pulled out load range plasterboard wall could break up recommend mount brackets screws directly wall studs relieves plasterboard paneling stress makes unit strong wall itself locate studs use stud finder magnet device points nails con cealed wall Most studs 16 inch es apart Since distance can vary should prove location stud Use small finishing nail check across proposed location note nail passes through plasterboard easily mark center point small holes easily patched screws fbr wrought iron brackets should 2A-in #10 pan head Use 3-in #10 flat head wood screw countersunk holes steel standards Drill A-in hole stud prevent splitting Does sound like am trying rig shelf earthquake way am call accidental overloadthat hap pens someone uses swivel chair ________________________________ climb up look shelf adequate strength suggestions relate proceeds chin-ups edge shelf models about six-foot span falls Its nice know shelf will smaller survive believe best choice shelving Most people will find can easily material hollow core door panel remove models shelf old favorite building workbenches look-see shorter especially hinge-up type limited reach buy step stool climb up work areas considerably lighter safety step stool will also make hanplywood chip board already dy chair workbench framed inside will remain flat brackets should mounted 20-inch door costs about $1800 have top shelf about 18 inches below seen sale little $1000 ceiling places shelf about the brackets available height door height few come 14- 18-inch sizes work Senior Falcon rest its landing gear areas looks impoitant have rudder just touch ceiling can use gray stamped-metal brackets smaller models can move shelf ridge stamped center gives closer ceiling Large trike-gear bracket enough strength moderate models cannot rotate fall loads attractive stronger shelf nose will rest against ceil bracket scrolled wrought iron type ing main gear will rest against scroll brace gives maximum strength wood trim front edge However 16-inch bracket reasonably tail-dragger must have support priced larger mail box bracket behind CG raise tail oneavailable costs considerably inch wheel chocks prevent rolling off 16-inch unit next item assemble door brackets shown photo panels required length door adjustable steel standard type designed 80 inches long need cut 168 Model Aviation nate Fun Fly competition Model ideal Sunday Flyer Excellent 05 61 FS ptionally slow land ing speed le enough 1st AilerOn model easily framed less B hrs balsa & Aircraft plywood construction ed full size plans Engine45 61 WIngspan62 Length OA54 Wing Area550 sq WeIghtA 6 Lbs Wing Loading IS 17 Os Designed Bob Lalne kit market sold satisfaction guarantee money back LIST PRICE 94 S 5995 introductory price offor limited time Prepaid Continental USA Texas Residents Add 5% Sales Tax Send 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 214-593-6135 TAPER ACETM Rib Profiler makes tapered eliptical wing design easy Works faster computer Adjusts locks size rib instantly Curve plates provided draw 3 different full symmetrical 3 different semi-symmetrical airfoils Flat bottom airfoils can also drawn Send check MO $2795 Jim Denaro 543 Bedford Street Concord MA 01742 L
Edition: Model Aviation - 1985/01
Page Numbers: 64, 65, 167, 168
Edition: Model Aviation - 1985/01
Page Numbers: 64, 65, 167, 168
ON NOVEMBER 8 1961 experimental airplane crashed hometown Flint MI Being three years old time didnt think much event Years later attending University Michigan learned plane friend helped its wing tunnel test still didnt think much about 1980 EAA Convention Osh kosh digging through some ancient Sport Aviations found Dean Delt Air 250 covers love model especially attractive Peanut Scale event because 13-in span gives quite bit wing area motor length room detailing first glance might think model would unstable because 1 has no horizontal stabilizer 2 propeller back 3 full-size planes total flight time less 30 seconds Participation Northrop Flying Wing Contest has shown tailless planes inherently unstable once trimmed Regarding propeller location first Scale model Lesher Teal pusher ConFull-Size Plan Pages 90-91 ES Lynne Buben trary concerns flying would compared backing trailer far stability concerned very stable fact propellers vertical area behind center gravity CG has some fin effect As far model hav ing scale flight performance its first flight longer original planes total air time model proved very stable flier Construction wings elevons reflex tabs built separate parts ease trimming construction Twin spars made /46 sq balsa add tor sional rigidity wing reflex tabs formed cutting shape /32 sheet soaking water rubberbanding onto applesauce-sized jar After dry sand taper trailing edge cover white tissue fuselage formed running sq stringers between bulkheads nose segment just forward canopy composed crescent-shaped /32 sheet balsa cutouts form compound curve can covered two sections time very tip nose carved solid balsa nose hook inserted removable piece makes motor stuff ing much easier make model look really snazzy make pitot boom round toothpick covered red tissue have healthy respect other peoples airplanes eyes leave off during flight Once pieces covered white tissue shrunk alcohol time assemble model fin can attached topmost fuselage string er poking holes through tissue flowing Hot Stuff junction join wings fuselage first tem porarily cut away tissue vicinity wing attached Glue inside rib middle stringer spars Bulkheads D E Finally rejoin tissue fuselage cutting first flight unique advanced home-built aircraft result ed tragedy its designerlbuilder Herbert F Deanfor reas ons still unknown Its delight Peanut Scale 64 Model Aviation out profile wing elevons must joined wing about 150 up deflection reflex tabs necessary tailless airplane fly color trim can now added cutting strips red blue tissue attaching model 50-50 mixture dope thinner ensure airplane its pretty stripes part company first launch brush thinner over trim Because original airplane re tractable landing gear chose model plane gear up configuration may wish add tail skid pro tect propeller propeller made /32 sheet balsa cut two identical paddle shapes about 2Y4 long 1 /2 wide Soak water rubberband around glass tilted about 15 vertical Make hub approximately X6 glue dried propeller blades onto hub about 150 pitch 250 dihedral Make sure concave side blades aft run wire through around hub Push seg ment copper Hot Stuff tubing tail block making sure wire pro peller shaft will able turn freely thrust Delt-Air should 0-0 directed straight nose hook used two small beads between propeller hub tail block applied drop oil reduce friction word about instrument panels no bonus points cockpit detail Peanut rules size canopy makes instrument panel improvement general impression made instrument panel out paper glued it made model much realistic altimeter set 820 feet ground altitude Flint Bishop Airport Save making canopy last because some plastics cloud presence dope fumes Use sheet plastic similar thickness found surrounding cosmetics packaged Hot Stuff plastic too thick model will heavy too thin likely tear formed experimented three thick nesses purchased hobby store found two samples clouded near Hot Stuff near thinned dope doing field repairs careful use other glues near canopy first step making canopy carve block same shape canopy sand smooth cover block coat thin dope sand dope again sand extrafine sandpaper procedure eliminates wood grain texture Make sure final coat dope completely dry before proceeding satisfied finish canopy block make frame slightly bigger block attach sheet plastic frame adhesive tape Use heat gun soften Continued page 167 January1985 65 Propeller dihedral necessary blades clear elevons f Note strument panel especially needed model type Twin spars prevent warps author shows launch Dean Delt-Air 250 Peanut Hold fuselage right hand prop left model should banked tothe left siightiyfor launching Trim made modeling tissue Stripes numbers antigiare panel colored red leading edges wing fin light blue Flight adjusting isnt difficult M52 Thermal & Slope Graphite reinforcing Rudder & Full Flying Stab Wing Span 52 Airfoil Eppler 387 Flying Weight 12-13 oz Wing Loading 53- 57 oz/sqft can high started LINDSEY MICRO PRODUCTS IMP 1000 Ultra Light Slope Aileron & Elevator Wing Span 41 Length 285 Airfoil Eppler 211 Flying Weight 13 14 oz Wing Loading 65 75 oz/sqft kits designed putfun sport flying wood construction include hardware needed Both require Two Channel Radio Mini Servos 250 MAH BATT $25OOea includesshipping UPS COD add$165-- cash CAadd 6%tax Dealer lnauiries Invited 160-A N Fairview Ave Suite 104 Goleta CA 93117 805 683 2042 md special Thank RG Moul Editorial Director Aeromodeller 4agazine sharing facts photos report received following letter interest rom Bob Larsh Central Indiana Leromodelers CIA Enclosed old picture Carl }oldberg snapped 1939 Nationals etroit Note holds model look g suspiciously close being large ver ion later-kitted A/B Interceptor snapshot recently found hoto album long-deceased old-time iodeler number copies made engine under magnifying glass oks like standard Brown Jr ound confronted Carl 4 Toledo Trade Show picture le quite amazed see also cognized model immediately aid experimental jobs e period worked two years ying develop good competi machine nothing prob ms never able tame Carl aid engine Brown ery powerful homebuilt motor made n individual Chicago Carl lamented iat return engine asnt sale also commented e able determine optimum esign pylon height configura particular model reem hasized virtues down thrust im should noted Carl also ying Class Interceptor prototype ic 39 Nats resembled 1941 kit iodel very closely recently attended CIA Old imers meets Wright Patterson AFB ayton OH have access small st adequate flying site behind Air orce Museum field mowed turf id fantastic place fly can ar yourself away museum long ough put few Old-Timer flights also pleasure meeting some name brand Old-Timers visit ith relative Bill Haught Old-Timers small groups quality ways high Clarence Haught 3226 Honeysuckle r Coeur dAlene ID 83814 Dean Delt-AirlBuben Continued page 65 film pressing frame around canopy block Remove block cut out canopy console fingers didnt wear gloves using heat gun attach canopy fuselage use toothpick apply Elmers contact cement bottom canopy fuselage glue dries clear press canopy Use thin white detail ing tape around junction wind shield breaks back canopy made paper attached white glue plane now ready fly Flight trimming Start single loop 3A2-in rubber about half times length fuselage Since tail less planes sensitive thrust line location conventional ones trim model glide first gradually crease power glide tests make sure elevons deflected up least 150 wing neither wing has wash-in Wash-in warp results outer airfoils being leading-edge-up board ones Add just enough winds backwards take up slack motor launch hold plane fuselage approximately CG gently push air model pitches up add nose weight pitches down add little clay back fuselage Unless model spirals steeply ground concentrate pitch before moving turn trim model seems very sensitive pitch mean small amounts clay tend make large difference plane just doesnt seem trimma ble add bit up-elevon deflection nose weight try again improves planes stability moving CG forward compensates resulting pitch-down tendency increasing elevons pitch-up torque Conversely plane trimmed lot nose weight gets too heavy try taking out some elevons up-deflection removing some nose weight PRODUCTS FOR THE DISCERNING MODELER Complete Line Exhaust Systems * TunedMuffled Tuned Pipes * Headers Venturi Mufflers * Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems Unsurpassed Workmanshio 8 Performance January1955 167 Want REV- UP Pieps P Average lnventoy 4009 Prep! ever SD Sizes Per 411 Events Now About Custom Tuned Engines P Cembat Raciag Free Flight 5 Sped Ceinpetitien Accessories 5 Parts Pyle, Racing Pattern 5 Sport FF 5 U/C. Rage Inventory! Specialists Custom Ce 1D S Reed Engines Std S R/C Caste Parts Ce Engines Cemplete Inventory Dl Individual Steck Parts Current ZD 5 Medalliea Engines New Parts Fer Discontinued Ce Eagines Rep/ku Orwick 23 29 60 Engines Ignition Engine Accessories Visa 5 MasterCard Welcome Detailed Drochure Send 75V Rustom Kraftsmanship PO 2699 Laguna Nil/s CA 92654 Ph 714130-5162 %e LONS oztaO model Will sensitive flight perturbations will stay up longer Once model trimmed pitch turn trim can added Bank plane slightly left again just few turns motor observe turn ing radius planes does turn warp little left fin deflection plane spirals ground orbit turn gets tighter increase updeflection outside elevon correct spiral adjust fin deflection achieve desirable turn radius After glide trim has established add few turns motor launch same left bank used glide tests plane pitches up add shim between fuselage top tail block pitch-down correction add shim bottom tail block Similarly take out left turn add shim left side tail block vice versa correcting too much right turn Gradually add turns motor sneak up planes full-power per formance maximum turns motor give satisfactory flight times try warping little curvature propeller blades necessary use A-in motor heavier motor will move CO forward compensate taking off some nose weight adding tail weight Dont put off seemingly-com plicated trimming process model flies like didoff boardyou will need nose weight shims warps will see Dean Delt-Air 250 ready forgive worst launch techniquesas long have wound motor right direction Work ArealHux Continued page 67 use department stores confuse aluminum type used shelving aluminum brackets standards may handle load level all-steel units have shown no sign fatigue over past five years Select plug-in bracket locking screw install screw next slot above bracket installations spacing brack ets other wall stud 32 inches adequate supporting model airplanes key tafe shelf mount wall Note weight shelf places pressure screw corner bracket pulling outward wall Plugs will certainly work Molley bolts resist being pulled out load range plasterboard wall could break up recommend mount brackets screws directly wall studs relieves plasterboard paneling stress makes unit strong wall itself locate studs use stud finder magnet device points nails con cealed wall Most studs 16 inch es apart Since distance can vary should prove location stud Use small finishing nail check across proposed location note nail passes through plasterboard easily mark center point small holes easily patched screws fbr wrought iron brackets should 2A-in #10 pan head Use 3-in #10 flat head wood screw countersunk holes steel standards Drill A-in hole stud prevent splitting Does sound like am trying rig shelf earthquake way am call accidental overloadthat hap pens someone uses swivel chair ________________________________ climb up look shelf adequate strength suggestions relate proceeds chin-ups edge shelf models about six-foot span falls Its nice know shelf will smaller survive believe best choice shelving Most people will find can easily material hollow core door panel remove models shelf old favorite building workbenches look-see shorter especially hinge-up type limited reach buy step stool climb up work areas considerably lighter safety step stool will also make hanplywood chip board already dy chair workbench framed inside will remain flat brackets should mounted 20-inch door costs about $1800 have top shelf about 18 inches below seen sale little $1000 ceiling places shelf about the brackets available height door height few come 14- 18-inch sizes work Senior Falcon rest its landing gear areas looks impoitant have rudder just touch ceiling can use gray stamped-metal brackets smaller models can move shelf ridge stamped center gives closer ceiling Large trike-gear bracket enough strength moderate models cannot rotate fall loads attractive stronger shelf nose will rest against ceil bracket scrolled wrought iron type ing main gear will rest against scroll brace gives maximum strength wood trim front edge However 16-inch bracket reasonably tail-dragger must have support priced larger mail box bracket behind CG raise tail oneavailable costs considerably inch wheel chocks prevent rolling off 16-inch unit next item assemble door brackets shown photo panels required length door adjustable steel standard type designed 80 inches long need cut 168 Model Aviation nate Fun Fly competition Model ideal Sunday Flyer Excellent 05 61 FS ptionally slow land ing speed le enough 1st AilerOn model easily framed less B hrs balsa & Aircraft plywood construction ed full size plans Engine45 61 WIngspan62 Length OA54 Wing Area550 sq WeIghtA 6 Lbs Wing Loading IS 17 Os Designed Bob Lalne kit market sold satisfaction guarantee money back LIST PRICE 94 S 5995 introductory price offor limited time Prepaid Continental USA Texas Residents Add 5% Sales Tax Send 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 214-593-6135 TAPER ACETM Rib Profiler makes tapered eliptical wing design easy Works faster computer Adjusts locks size rib instantly Curve plates provided draw 3 different full symmetrical 3 different semi-symmetrical airfoils Flat bottom airfoils can also drawn Send check MO $2795 Jim Denaro 543 Bedford Street Concord MA 01742 L
Edition: Model Aviation - 1985/01
Page Numbers: 64, 65, 167, 168
ON NOVEMBER 8 1961 experimental airplane crashed hometown Flint MI Being three years old time didnt think much event Years later attending University Michigan learned plane friend helped its wing tunnel test still didnt think much about 1980 EAA Convention Osh kosh digging through some ancient Sport Aviations found Dean Delt Air 250 covers love model especially attractive Peanut Scale event because 13-in span gives quite bit wing area motor length room detailing first glance might think model would unstable because 1 has no horizontal stabilizer 2 propeller back 3 full-size planes total flight time less 30 seconds Participation Northrop Flying Wing Contest has shown tailless planes inherently unstable once trimmed Regarding propeller location first Scale model Lesher Teal pusher ConFull-Size Plan Pages 90-91 ES Lynne Buben trary concerns flying would compared backing trailer far stability concerned very stable fact propellers vertical area behind center gravity CG has some fin effect As far model hav ing scale flight performance its first flight longer original planes total air time model proved very stable flier Construction wings elevons reflex tabs built separate parts ease trimming construction Twin spars made /46 sq balsa add tor sional rigidity wing reflex tabs formed cutting shape /32 sheet soaking water rubberbanding onto applesauce-sized jar After dry sand taper trailing edge cover white tissue fuselage formed running sq stringers between bulkheads nose segment just forward canopy composed crescent-shaped /32 sheet balsa cutouts form compound curve can covered two sections time very tip nose carved solid balsa nose hook inserted removable piece makes motor stuff ing much easier make model look really snazzy make pitot boom round toothpick covered red tissue have healthy respect other peoples airplanes eyes leave off during flight Once pieces covered white tissue shrunk alcohol time assemble model fin can attached topmost fuselage string er poking holes through tissue flowing Hot Stuff junction join wings fuselage first tem porarily cut away tissue vicinity wing attached Glue inside rib middle stringer spars Bulkheads D E Finally rejoin tissue fuselage cutting first flight unique advanced home-built aircraft result ed tragedy its designerlbuilder Herbert F Deanfor reas ons still unknown Its delight Peanut Scale 64 Model Aviation out profile wing elevons must joined wing about 150 up deflection reflex tabs necessary tailless airplane fly color trim can now added cutting strips red blue tissue attaching model 50-50 mixture dope thinner ensure airplane its pretty stripes part company first launch brush thinner over trim Because original airplane re tractable landing gear chose model plane gear up configuration may wish add tail skid pro tect propeller propeller made /32 sheet balsa cut two identical paddle shapes about 2Y4 long 1 /2 wide Soak water rubberband around glass tilted about 15 vertical Make hub approximately X6 glue dried propeller blades onto hub about 150 pitch 250 dihedral Make sure concave side blades aft run wire through around hub Push seg ment copper Hot Stuff tubing tail block making sure wire pro peller shaft will able turn freely thrust Delt-Air should 0-0 directed straight nose hook used two small beads between propeller hub tail block applied drop oil reduce friction word about instrument panels no bonus points cockpit detail Peanut rules size canopy makes instrument panel improvement general impression made instrument panel out paper glued it made model much realistic altimeter set 820 feet ground altitude Flint Bishop Airport Save making canopy last because some plastics cloud presence dope fumes Use sheet plastic similar thickness found surrounding cosmetics packaged Hot Stuff plastic too thick model will heavy too thin likely tear formed experimented three thick nesses purchased hobby store found two samples clouded near Hot Stuff near thinned dope doing field repairs careful use other glues near canopy first step making canopy carve block same shape canopy sand smooth cover block coat thin dope sand dope again sand extrafine sandpaper procedure eliminates wood grain texture Make sure final coat dope completely dry before proceeding satisfied finish canopy block make frame slightly bigger block attach sheet plastic frame adhesive tape Use heat gun soften Continued page 167 January1985 65 Propeller dihedral necessary blades clear elevons f Note strument panel especially needed model type Twin spars prevent warps author shows launch Dean Delt-Air 250 Peanut Hold fuselage right hand prop left model should banked tothe left siightiyfor launching Trim made modeling tissue Stripes numbers antigiare panel colored red leading edges wing fin light blue Flight adjusting isnt difficult M52 Thermal & Slope Graphite reinforcing Rudder & Full Flying Stab Wing Span 52 Airfoil Eppler 387 Flying Weight 12-13 oz Wing Loading 53- 57 oz/sqft can high started LINDSEY MICRO PRODUCTS IMP 1000 Ultra Light Slope Aileron & Elevator Wing Span 41 Length 285 Airfoil Eppler 211 Flying Weight 13 14 oz Wing Loading 65 75 oz/sqft kits designed putfun sport flying wood construction include hardware needed Both require Two Channel Radio Mini Servos 250 MAH BATT $25OOea includesshipping UPS COD add$165-- cash CAadd 6%tax Dealer lnauiries Invited 160-A N Fairview Ave Suite 104 Goleta CA 93117 805 683 2042 md special Thank RG Moul Editorial Director Aeromodeller 4agazine sharing facts photos report received following letter interest rom Bob Larsh Central Indiana Leromodelers CIA Enclosed old picture Carl }oldberg snapped 1939 Nationals etroit Note holds model look g suspiciously close being large ver ion later-kitted A/B Interceptor snapshot recently found hoto album long-deceased old-time iodeler number copies made engine under magnifying glass oks like standard Brown Jr ound confronted Carl 4 Toledo Trade Show picture le quite amazed see also cognized model immediately aid experimental jobs e period worked two years ying develop good competi machine nothing prob ms never able tame Carl aid engine Brown ery powerful homebuilt motor made n individual Chicago Carl lamented iat return engine asnt sale also commented e able determine optimum esign pylon height configura particular model reem hasized virtues down thrust im should noted Carl also ying Class Interceptor prototype ic 39 Nats resembled 1941 kit iodel very closely recently attended CIA Old imers meets Wright Patterson AFB ayton OH have access small st adequate flying site behind Air orce Museum field mowed turf id fantastic place fly can ar yourself away museum long ough put few Old-Timer flights also pleasure meeting some name brand Old-Timers visit ith relative Bill Haught Old-Timers small groups quality ways high Clarence Haught 3226 Honeysuckle r Coeur dAlene ID 83814 Dean Delt-AirlBuben Continued page 65 film pressing frame around canopy block Remove block cut out canopy console fingers didnt wear gloves using heat gun attach canopy fuselage use toothpick apply Elmers contact cement bottom canopy fuselage glue dries clear press canopy Use thin white detail ing tape around junction wind shield breaks back canopy made paper attached white glue plane now ready fly Flight trimming Start single loop 3A2-in rubber about half times length fuselage Since tail less planes sensitive thrust line location conventional ones trim model glide first gradually crease power glide tests make sure elevons deflected up least 150 wing neither wing has wash-in Wash-in warp results outer airfoils being leading-edge-up board ones Add just enough winds backwards take up slack motor launch hold plane fuselage approximately CG gently push air model pitches up add nose weight pitches down add little clay back fuselage Unless model spirals steeply ground concentrate pitch before moving turn trim model seems very sensitive pitch mean small amounts clay tend make large difference plane just doesnt seem trimma ble add bit up-elevon deflection nose weight try again improves planes stability moving CG forward compensates resulting pitch-down tendency increasing elevons pitch-up torque Conversely plane trimmed lot nose weight gets too heavy try taking out some elevons up-deflection removing some nose weight PRODUCTS FOR THE DISCERNING MODELER Complete Line Exhaust Systems * TunedMuffled Tuned Pipes * Headers Venturi Mufflers * Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems Unsurpassed Workmanshio 8 Performance January1955 167 Want REV- UP Pieps P Average lnventoy 4009 Prep! ever SD Sizes Per 411 Events Now About Custom Tuned Engines P Cembat Raciag Free Flight 5 Sped Ceinpetitien Accessories 5 Parts Pyle, Racing Pattern 5 Sport FF 5 U/C. Rage Inventory! Specialists Custom Ce 1D S Reed Engines Std S R/C Caste Parts Ce Engines Cemplete Inventory Dl Individual Steck Parts Current ZD 5 Medalliea Engines New Parts Fer Discontinued Ce Eagines Rep/ku Orwick 23 29 60 Engines Ignition Engine Accessories Visa 5 MasterCard Welcome Detailed Drochure Send 75V Rustom Kraftsmanship PO 2699 Laguna Nil/s CA 92654 Ph 714130-5162 %e LONS oztaO model Will sensitive flight perturbations will stay up longer Once model trimmed pitch turn trim can added Bank plane slightly left again just few turns motor observe turn ing radius planes does turn warp little left fin deflection plane spirals ground orbit turn gets tighter increase updeflection outside elevon correct spiral adjust fin deflection achieve desirable turn radius After glide trim has established add few turns motor launch same left bank used glide tests plane pitches up add shim between fuselage top tail block pitch-down correction add shim bottom tail block Similarly take out left turn add shim left side tail block vice versa correcting too much right turn Gradually add turns motor sneak up planes full-power per formance maximum turns motor give satisfactory flight times try warping little curvature propeller blades necessary use A-in motor heavier motor will move CO forward compensate taking off some nose weight adding tail weight Dont put off seemingly-com plicated trimming process model flies like didoff boardyou will need nose weight shims warps will see Dean Delt-Air 250 ready forgive worst launch techniquesas long have wound motor right direction Work ArealHux Continued page 67 use department stores confuse aluminum type used shelving aluminum brackets standards may handle load level all-steel units have shown no sign fatigue over past five years Select plug-in bracket locking screw install screw next slot above bracket installations spacing brack ets other wall stud 32 inches adequate supporting model airplanes key tafe shelf mount wall Note weight shelf places pressure screw corner bracket pulling outward wall Plugs will certainly work Molley bolts resist being pulled out load range plasterboard wall could break up recommend mount brackets screws directly wall studs relieves plasterboard paneling stress makes unit strong wall itself locate studs use stud finder magnet device points nails con cealed wall Most studs 16 inch es apart Since distance can vary should prove location stud Use small finishing nail check across proposed location note nail passes through plasterboard easily mark center point small holes easily patched screws fbr wrought iron brackets should 2A-in #10 pan head Use 3-in #10 flat head wood screw countersunk holes steel standards Drill A-in hole stud prevent splitting Does sound like am trying rig shelf earthquake way am call accidental overloadthat hap pens someone uses swivel chair ________________________________ climb up look shelf adequate strength suggestions relate proceeds chin-ups edge shelf models about six-foot span falls Its nice know shelf will smaller survive believe best choice shelving Most people will find can easily material hollow core door panel remove models shelf old favorite building workbenches look-see shorter especially hinge-up type limited reach buy step stool climb up work areas considerably lighter safety step stool will also make hanplywood chip board already dy chair workbench framed inside will remain flat brackets should mounted 20-inch door costs about $1800 have top shelf about 18 inches below seen sale little $1000 ceiling places shelf about the brackets available height door height few come 14- 18-inch sizes work Senior Falcon rest its landing gear areas looks impoitant have rudder just touch ceiling can use gray stamped-metal brackets smaller models can move shelf ridge stamped center gives closer ceiling Large trike-gear bracket enough strength moderate models cannot rotate fall loads attractive stronger shelf nose will rest against ceil bracket scrolled wrought iron type ing main gear will rest against scroll brace gives maximum strength wood trim front edge However 16-inch bracket reasonably tail-dragger must have support priced larger mail box bracket behind CG raise tail oneavailable costs considerably inch wheel chocks prevent rolling off 16-inch unit next item assemble door brackets shown photo panels required length door adjustable steel standard type designed 80 inches long need cut 168 Model Aviation nate Fun Fly competition Model ideal Sunday Flyer Excellent 05 61 FS ptionally slow land ing speed le enough 1st AilerOn model easily framed less B hrs balsa & Aircraft plywood construction ed full size plans Engine45 61 WIngspan62 Length OA54 Wing Area550 sq WeIghtA 6 Lbs Wing Loading IS 17 Os Designed Bob Lalne kit market sold satisfaction guarantee money back LIST PRICE 94 S 5995 introductory price offor limited time Prepaid Continental USA Texas Residents Add 5% Sales Tax Send 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 214-593-6135 TAPER ACETM Rib Profiler makes tapered eliptical wing design easy Works faster computer Adjusts locks size rib instantly Curve plates provided draw 3 different full symmetrical 3 different semi-symmetrical airfoils Flat bottom airfoils can also drawn Send check MO $2795 Jim Denaro 543 Bedford Street Concord MA 01742 L
Edition: Model Aviation - 1985/01
Page Numbers: 64, 65, 167, 168
ON NOVEMBER 8 1961 experimental airplane crashed hometown Flint MI Being three years old time didnt think much event Years later attending University Michigan learned plane friend helped its wing tunnel test still didnt think much about 1980 EAA Convention Osh kosh digging through some ancient Sport Aviations found Dean Delt Air 250 covers love model especially attractive Peanut Scale event because 13-in span gives quite bit wing area motor length room detailing first glance might think model would unstable because 1 has no horizontal stabilizer 2 propeller back 3 full-size planes total flight time less 30 seconds Participation Northrop Flying Wing Contest has shown tailless planes inherently unstable once trimmed Regarding propeller location first Scale model Lesher Teal pusher ConFull-Size Plan Pages 90-91 ES Lynne Buben trary concerns flying would compared backing trailer far stability concerned very stable fact propellers vertical area behind center gravity CG has some fin effect As far model hav ing scale flight performance its first flight longer original planes total air time model proved very stable flier Construction wings elevons reflex tabs built separate parts ease trimming construction Twin spars made /46 sq balsa add tor sional rigidity wing reflex tabs formed cutting shape /32 sheet soaking water rubberbanding onto applesauce-sized jar After dry sand taper trailing edge cover white tissue fuselage formed running sq stringers between bulkheads nose segment just forward canopy composed crescent-shaped /32 sheet balsa cutouts form compound curve can covered two sections time very tip nose carved solid balsa nose hook inserted removable piece makes motor stuff ing much easier make model look really snazzy make pitot boom round toothpick covered red tissue have healthy respect other peoples airplanes eyes leave off during flight Once pieces covered white tissue shrunk alcohol time assemble model fin can attached topmost fuselage string er poking holes through tissue flowing Hot Stuff junction join wings fuselage first tem porarily cut away tissue vicinity wing attached Glue inside rib middle stringer spars Bulkheads D E Finally rejoin tissue fuselage cutting first flight unique advanced home-built aircraft result ed tragedy its designerlbuilder Herbert F Deanfor reas ons still unknown Its delight Peanut Scale 64 Model Aviation out profile wing elevons must joined wing about 150 up deflection reflex tabs necessary tailless airplane fly color trim can now added cutting strips red blue tissue attaching model 50-50 mixture dope thinner ensure airplane its pretty stripes part company first launch brush thinner over trim Because original airplane re tractable landing gear chose model plane gear up configuration may wish add tail skid pro tect propeller propeller made /32 sheet balsa cut two identical paddle shapes about 2Y4 long 1 /2 wide Soak water rubberband around glass tilted about 15 vertical Make hub approximately X6 glue dried propeller blades onto hub about 150 pitch 250 dihedral Make sure concave side blades aft run wire through around hub Push seg ment copper Hot Stuff tubing tail block making sure wire pro peller shaft will able turn freely thrust Delt-Air should 0-0 directed straight nose hook used two small beads between propeller hub tail block applied drop oil reduce friction word about instrument panels no bonus points cockpit detail Peanut rules size canopy makes instrument panel improvement general impression made instrument panel out paper glued it made model much realistic altimeter set 820 feet ground altitude Flint Bishop Airport Save making canopy last because some plastics cloud presence dope fumes Use sheet plastic similar thickness found surrounding cosmetics packaged Hot Stuff plastic too thick model will heavy too thin likely tear formed experimented three thick nesses purchased hobby store found two samples clouded near Hot Stuff near thinned dope doing field repairs careful use other glues near canopy first step making canopy carve block same shape canopy sand smooth cover block coat thin dope sand dope again sand extrafine sandpaper procedure eliminates wood grain texture Make sure final coat dope completely dry before proceeding satisfied finish canopy block make frame slightly bigger block attach sheet plastic frame adhesive tape Use heat gun soften Continued page 167 January1985 65 Propeller dihedral necessary blades clear elevons f Note strument panel especially needed model type Twin spars prevent warps author shows launch Dean Delt-Air 250 Peanut Hold fuselage right hand prop left model should banked tothe left siightiyfor launching Trim made modeling tissue Stripes numbers antigiare panel colored red leading edges wing fin light blue Flight adjusting isnt difficult M52 Thermal & Slope Graphite reinforcing Rudder & Full Flying Stab Wing Span 52 Airfoil Eppler 387 Flying Weight 12-13 oz Wing Loading 53- 57 oz/sqft can high started LINDSEY MICRO PRODUCTS IMP 1000 Ultra Light Slope Aileron & Elevator Wing Span 41 Length 285 Airfoil Eppler 211 Flying Weight 13 14 oz Wing Loading 65 75 oz/sqft kits designed putfun sport flying wood construction include hardware needed Both require Two Channel Radio Mini Servos 250 MAH BATT $25OOea includesshipping UPS COD add$165-- cash CAadd 6%tax Dealer lnauiries Invited 160-A N Fairview Ave Suite 104 Goleta CA 93117 805 683 2042 md special Thank RG Moul Editorial Director Aeromodeller 4agazine sharing facts photos report received following letter interest rom Bob Larsh Central Indiana Leromodelers CIA Enclosed old picture Carl }oldberg snapped 1939 Nationals etroit Note holds model look g suspiciously close being large ver ion later-kitted A/B Interceptor snapshot recently found hoto album long-deceased old-time iodeler number copies made engine under magnifying glass oks like standard Brown Jr ound confronted Carl 4 Toledo Trade Show picture le quite amazed see also cognized model immediately aid experimental jobs e period worked two years ying develop good competi machine nothing prob ms never able tame Carl aid engine Brown ery powerful homebuilt motor made n individual Chicago Carl lamented iat return engine asnt sale also commented e able determine optimum esign pylon height configura particular model reem hasized virtues down thrust im should noted Carl also ying Class Interceptor prototype ic 39 Nats resembled 1941 kit iodel very closely recently attended CIA Old imers meets Wright Patterson AFB ayton OH have access small st adequate flying site behind Air orce Museum field mowed turf id fantastic place fly can ar yourself away museum long ough put few Old-Timer flights also pleasure meeting some name brand Old-Timers visit ith relative Bill Haught Old-Timers small groups quality ways high Clarence Haught 3226 Honeysuckle r Coeur dAlene ID 83814 Dean Delt-AirlBuben Continued page 65 film pressing frame around canopy block Remove block cut out canopy console fingers didnt wear gloves using heat gun attach canopy fuselage use toothpick apply Elmers contact cement bottom canopy fuselage glue dries clear press canopy Use thin white detail ing tape around junction wind shield breaks back canopy made paper attached white glue plane now ready fly Flight trimming Start single loop 3A2-in rubber about half times length fuselage Since tail less planes sensitive thrust line location conventional ones trim model glide first gradually crease power glide tests make sure elevons deflected up least 150 wing neither wing has wash-in Wash-in warp results outer airfoils being leading-edge-up board ones Add just enough winds backwards take up slack motor launch hold plane fuselage approximately CG gently push air model pitches up add nose weight pitches down add little clay back fuselage Unless model spirals steeply ground concentrate pitch before moving turn trim model seems very sensitive pitch mean small amounts clay tend make large difference plane just doesnt seem trimma ble add bit up-elevon deflection nose weight try again improves planes stability moving CG forward compensates resulting pitch-down tendency increasing elevons pitch-up torque Conversely plane trimmed lot nose weight gets too heavy try taking out some elevons up-deflection removing some nose weight PRODUCTS FOR THE DISCERNING MODELER Complete Line Exhaust Systems * TunedMuffled Tuned Pipes * Headers Venturi Mufflers * Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems Unsurpassed Workmanshio 8 Performance January1955 167 Want REV- UP Pieps P Average lnventoy 4009 Prep! ever SD Sizes Per 411 Events Now About Custom Tuned Engines P Cembat Raciag Free Flight 5 Sped Ceinpetitien Accessories 5 Parts Pyle, Racing Pattern 5 Sport FF 5 U/C. Rage Inventory! Specialists Custom Ce 1D S Reed Engines Std S R/C Caste Parts Ce Engines Cemplete Inventory Dl Individual Steck Parts Current ZD 5 Medalliea Engines New Parts Fer Discontinued Ce Eagines Rep/ku Orwick 23 29 60 Engines Ignition Engine Accessories Visa 5 MasterCard Welcome Detailed Drochure Send 75V Rustom Kraftsmanship PO 2699 Laguna Nil/s CA 92654 Ph 714130-5162 %e LONS oztaO model Will sensitive flight perturbations will stay up longer Once model trimmed pitch turn trim can added Bank plane slightly left again just few turns motor observe turn ing radius planes does turn warp little left fin deflection plane spirals ground orbit turn gets tighter increase updeflection outside elevon correct spiral adjust fin deflection achieve desirable turn radius After glide trim has established add few turns motor launch same left bank used glide tests plane pitches up add shim between fuselage top tail block pitch-down correction add shim bottom tail block Similarly take out left turn add shim left side tail block vice versa correcting too much right turn Gradually add turns motor sneak up planes full-power per formance maximum turns motor give satisfactory flight times try warping little curvature propeller blades necessary use A-in motor heavier motor will move CO forward compensate taking off some nose weight adding tail weight Dont put off seemingly-com plicated trimming process model flies like didoff boardyou will need nose weight shims warps will see Dean Delt-Air 250 ready forgive worst launch techniquesas long have wound motor right direction Work ArealHux Continued page 67 use department stores confuse aluminum type used shelving aluminum brackets standards may handle load level all-steel units have shown no sign fatigue over past five years Select plug-in bracket locking screw install screw next slot above bracket installations spacing brack ets other wall stud 32 inches adequate supporting model airplanes key tafe shelf mount wall Note weight shelf places pressure screw corner bracket pulling outward wall Plugs will certainly work Molley bolts resist being pulled out load range plasterboard wall could break up recommend mount brackets screws directly wall studs relieves plasterboard paneling stress makes unit strong wall itself locate studs use stud finder magnet device points nails con cealed wall Most studs 16 inch es apart Since distance can vary should prove location stud Use small finishing nail check across proposed location note nail passes through plasterboard easily mark center point small holes easily patched screws fbr wrought iron brackets should 2A-in #10 pan head Use 3-in #10 flat head wood screw countersunk holes steel standards Drill A-in hole stud prevent splitting Does sound like am trying rig shelf earthquake way am call accidental overloadthat hap pens someone uses swivel chair ________________________________ climb up look shelf adequate strength suggestions relate proceeds chin-ups edge shelf models about six-foot span falls Its nice know shelf will smaller survive believe best choice shelving Most people will find can easily material hollow core door panel remove models shelf old favorite building workbenches look-see shorter especially hinge-up type limited reach buy step stool climb up work areas considerably lighter safety step stool will also make hanplywood chip board already dy chair workbench framed inside will remain flat brackets should mounted 20-inch door costs about $1800 have top shelf about 18 inches below seen sale little $1000 ceiling places shelf about the brackets available height door height few come 14- 18-inch sizes work Senior Falcon rest its landing gear areas looks impoitant have rudder just touch ceiling can use gray stamped-metal brackets smaller models can move shelf ridge stamped center gives closer ceiling Large trike-gear bracket enough strength moderate models cannot rotate fall loads attractive stronger shelf nose will rest against ceil bracket scrolled wrought iron type ing main gear will rest against scroll brace gives maximum strength wood trim front edge However 16-inch bracket reasonably tail-dragger must have support priced larger mail box bracket behind CG raise tail oneavailable costs considerably inch wheel chocks prevent rolling off 16-inch unit next item assemble door brackets shown photo panels required length door adjustable steel standard type designed 80 inches long need cut 168 Model Aviation nate Fun Fly competition Model ideal Sunday Flyer Excellent 05 61 FS ptionally slow land ing speed le enough 1st AilerOn model easily framed less B hrs balsa & Aircraft plywood construction ed full size plans Engine45 61 WIngspan62 Length OA54 Wing Area550 sq WeIghtA 6 Lbs Wing Loading IS 17 Os Designed Bob Lalne kit market sold satisfaction guarantee money back LIST PRICE 94 S 5995 introductory price offor limited time Prepaid Continental USA Texas Residents Add 5% Sales Tax Send 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 214-593-6135 TAPER ACETM Rib Profiler makes tapered eliptical wing design easy Works faster computer Adjusts locks size rib instantly Curve plates provided draw 3 different full symmetrical 3 different semi-symmetrical airfoils Flat bottom airfoils can also drawn Send check MO $2795 Jim Denaro 543 Bedford Street Concord MA 01742 L
