NO OCR TEXT NO OCR TEXT NO OCR TEXT same Remove second wing panel plan install vertical-grain shear webs Fit 3/33 balsa sheet between ribs up against spars Mark inside cut form I-beam mark top bottom spar face glue spars channel Either will job Make servo extension tubes soaking 1/32 x 2 balsa sheet taping place around 1/2-inch dowel Remove dry glue wing panels before joining wings together Weight wing panel using /8 sq shim keep level Butt second panel first 1 1/2-inch block under tip rib get proper dihedral Glue /8 plywood spar joiners using epoxy clamp till set Glue balsa block trailing edge hard point wing bolts Turn wing over bottom up sheet leading trailing edges 3/33 balsa sheet Sheet center section out rib 5 add capstrips Turn wing right side up weight wing panel time using re shim keep level Using Robart incidence meter root rib set wing 00 Use meter check tip rib 0 degrees sure panel twisted can sheet leading trailing edges glue dry repeat procedure other wing panel should guarantee straight wing Add capstrips center section sheeting Attach 3/ x 1 leading edge plane shape Drill two 3/ holes leading edge glue 3/g dowels Ailerons made two 3/ x 214 aileron stock glued together Dry-fit aileron wing Sig Easy Hinges will glued after aircraft covered Add balsa block center rear wing Cut wingtip blocks shape hollow lighten Glue tips finish shaping sanding wing Set wing aside now Cut four engine nacelle sides 1/ balsa sheet four doublers 1/33 plywood Cut two NA-2 NA-3 formers Lite Ply Place firewalls waxed paper flat work surface Stand up nacelle sides next firewall Using straightedge glue place Reinforce triangular stock Glue NA-2 proper location using tn-stock also now have rigid box Before adding nacelles wing best much work possible Mount engines fit cowls mount fit c wire landing gear Now can cut out bays between rib R-3 rib R-4 back spars Weight wing down work surface set 00 using Robart incidence meter Slide engine nacelles check 00 Turn wing over Glue NA-3 pulling rear nacelle together moisten necessary Sheet bottom nacelle I/ balsa cross grain can install fuel tanks servos time made nacelle tops using fiberglass balsa plug cowls nacelle tops available Fiberglass Specialties 38624 Mt Kisco Drive Sterling Heights MI 48310 Glue hardwood blocks secure cowls nacelle tops pan head screws Fuselage Make two fuselage sides using 3/~ balsa sheet Glue up pieces get length width Cut two 1/32 doublers glue inside fuselage sides Tape both sides together true up October 1994 43 Servo extension tubes 1/32 balsa tubes formed around 1/2-inchThe wing has sheeted ailerons installed temporarily dowel Install before joining wing panelswhile tip blocks cut shaped Wing ready covernote nacelle cutouts LE Stab framework has completed hinging progress Balsa plug made lay up fiberglass engine nacelle top also available Fiberglass Specialties Make wing cutout using sabre saw fine-tooth blade Drill hole first start cut cut belly pan time Cut formers Lite Ply cross grain Lay fuselage sides plan mark inside former locations Tape clamp rear fuselage together Using two #64 rubber bands location install formers Check fuselage alignment using top view plan sure straight Zap cyanoacrylate glue joints Glue F-2A F-4b using spacers guide saw cut later Sheet bottom fuselage lfg balsa cross grain leaving front open help locating wing dowel plates Using scarf joints make up enough /8 x planks 54 inches long plank fuselage top Glue plank dead center top alternate plank bottom top both sides till filled Using method will have cut scarf joint either end shave down last plank fit either side After planking sand smooth fill cracks Red Devil one-time spackle Glue balsa nose block carve sand shape Lay fuselage upside down cradle Use Zona saw cut belly pan Remove center section F-3 Lay wing saddle check good fit Mark drill leading edge two I8 dowels Remove wing glue wing bolt plates fuselage side Use triangular stock Return wing saddle glue wing dowel plates through hole left front fuselage Align wing fuselage Drill tap plates 1/4.20 bolts Finish sheeting front fuselage fit belly pan use Zap bottle caps bolt conduits Just drill 1/4. inch hole top bottle cap insert bolt tighten down wing fill around cap flush job Using scrap 3/ balsa act spacer fin stab glue balsa block both sides fin carve sand shape Remove scrap Now have slots accept fin stab Build rudder stabilizer 3/g balsa Dry-fit Sig Easy Hinges Cut hole rudder bottom Glue Formica 1/32 plywood 032 aluminum side form pocket tail wheel Use 2-56 bolt axle have used type wheel least six different aircraft have never pulled rudder off Glue fin subfin fuselage stab can slid temporarily install servos pushrods After fuselage has painted finished covered stab can permanently installed Controls Use servo engine servo elevator half servo aileron 1/4-scale servo rudder Use 4-40 pushrods ailerons tail surfaces Aileron throw 3/4 inch way elevator inch way rudder can get like lot control movement use exponential dual rates born 44 Model Aviation ne nacelle top cowl removed Nacelle sides 1/8Nacelle installation progress Bottom sheeting crossbalsa doubled 1/32 plywoodgrained l/e balsa Wheels four inches diameter Fuselage planking progress Alternating strips up oneBottle tops used wing bolt recesses belly pan down makes job easierplace bottle tops can trimmed level Wing stab checked Robart meter 00 incidenceSeparate pushrods used elevator half Elevator can still Stab glued place pointbe removed point covering Note tail wheel Tail group pilot 15-inch Sig canopy Surfaces builtCanopy attched button-head screws Fuselage finished I8 balsa mated Sig Easy Hingeswith light fiberglass cloth Z-poxy resin fingers Finish I covered wing stabilizer UltraCote used light glass cloth Z-poxy finishing resin fuselage rudder fin used Sig Koverall nitrate dope coated fuselage cowls nacelle tops auto primer painted Hobbypoxy trim also Hobbypoxy pilot installed under 15-inch Sig bubble canopy plans show plywood block glued fuselage balance point large screw eye fits Hang assembled aircraft hook balance using Robart incidence meter looking 00 Mine came out nose heavy moved radio battery rearward achieve balance now time flight testing Flying The main thing twin get two engines running reliably ran both engines thru full tank fuel checked idle high speed plane held level nose pointing straight up Everything checked out just fine filled both fuel tanks pumped up retract air tank range-checked radio controls everything go taxiied out midfield applied full power What beautiful sound two engines make Takeoff straightno veering After climbout turned right put nose down make pass over field heard awful sound aileron flutter Editors note See article flutter issue immediately cut power made emergency landing good smooth touchdown Witch handled very well aileron partly working Checking damage found S 148 servo stripped gears both 2-56 pushrods bent Back workshop installed two new 59201 HD servos 4-40 pushrods also counterbalanced both ailerons using 1/16 music wire imbedded aileron mid-span 3/4-ounce lead slider sinker epoxied wire end forward hingeline cured flutter problem next flights uneventful Witch very stable will standard maneuvers Takeoffs landings breeze am confident Witch will fly engine out So would like build fine flying twin send set plans cant beat sound twin ber 1994 45 Type RO sport Wlngapen 84 inches Engine elzeAype Two OS Max 90s Number eervoe 7 Flying weight 17 pounds Conetrucilon Built-up CoverlngflnIeh Hobbypoxy UltraCote NO OCR TEXT MIO USE ROCKUIUUGLASI SOUCUMUJIS WINO nS lUSTS UWS 0$ SKEET UICEUK SODSuUrUSOCKLEK 0MKUUft00E / 5054 UUU U U/IIKSL1A 551 OU$ftUSLUDSUAUSSIa 0COURYSUKSUSIE QKKSUo SMOT USCOCLI SIDES 555 IUSULT flEM ELI UTlBOLSD 501ST SKEI4 AD USSUC 556 ISEDUS I4 - UUSSCACOgOCU SflCm mm 4554$ SO 0 Ut SO 0555 PUs 11W ST VUUIS 1St SMUt 11514 US$51 PLACEUIICESSUUUTO RU ASKS ISU CU 14555UIIN 2 WITCH CRAFT IDESNED DRAWN BY 3 JOHN TANZER ALL RIGHTS REVED K/7TANSASA A AA IA VtSDAA REARLJA BALSA ERAS /7 -Il TAO WA 2 IAAAA ASLRIAN STOCK LATISATIA IJAALSA TIASANI ASATA SAtAN 5591Q STAG SECTION NT TIC S -TI JOINER SOAK SALT AAAA tACKJA C AJSA BLOAT NASTALLAS B SNATAN AFTER RAtTlES AlAS LA O Q -AtpCp@jj TOMCAT TOSA FAR *55 BK OT A0-Q K-SQ -A ALP INSCIT PAST SPOt NASA START2 EATA SAAb A-A I AhS AJAR 545A AJAR WITCH CRAFT DESIGNED DRAWN BY JOHN TANZER 993 StAT IT NT TTA STARTS RIGHTS RESERVED 0 0 CD 0 Co 0 i C D CD 0 CD 0 0
Edition: Model Aviation - 1994/10
Page Numbers: 39, 40, 41, 43, 44, 45, 46, 47, 48
NO OCR TEXT NO OCR TEXT NO OCR TEXT same Remove second wing panel plan install vertical-grain shear webs Fit 3/33 balsa sheet between ribs up against spars Mark inside cut form I-beam mark top bottom spar face glue spars channel Either will job Make servo extension tubes soaking 1/32 x 2 balsa sheet taping place around 1/2-inch dowel Remove dry glue wing panels before joining wings together Weight wing panel using /8 sq shim keep level Butt second panel first 1 1/2-inch block under tip rib get proper dihedral Glue /8 plywood spar joiners using epoxy clamp till set Glue balsa block trailing edge hard point wing bolts Turn wing over bottom up sheet leading trailing edges 3/33 balsa sheet Sheet center section out rib 5 add capstrips Turn wing right side up weight wing panel time using re shim keep level Using Robart incidence meter root rib set wing 00 Use meter check tip rib 0 degrees sure panel twisted can sheet leading trailing edges glue dry repeat procedure other wing panel should guarantee straight wing Add capstrips center section sheeting Attach 3/ x 1 leading edge plane shape Drill two 3/ holes leading edge glue 3/g dowels Ailerons made two 3/ x 214 aileron stock glued together Dry-fit aileron wing Sig Easy Hinges will glued after aircraft covered Add balsa block center rear wing Cut wingtip blocks shape hollow lighten Glue tips finish shaping sanding wing Set wing aside now Cut four engine nacelle sides 1/ balsa sheet four doublers 1/33 plywood Cut two NA-2 NA-3 formers Lite Ply Place firewalls waxed paper flat work surface Stand up nacelle sides next firewall Using straightedge glue place Reinforce triangular stock Glue NA-2 proper location using tn-stock also now have rigid box Before adding nacelles wing best much work possible Mount engines fit cowls mount fit c wire landing gear Now can cut out bays between rib R-3 rib R-4 back spars Weight wing down work surface set 00 using Robart incidence meter Slide engine nacelles check 00 Turn wing over Glue NA-3 pulling rear nacelle together moisten necessary Sheet bottom nacelle I/ balsa cross grain can install fuel tanks servos time made nacelle tops using fiberglass balsa plug cowls nacelle tops available Fiberglass Specialties 38624 Mt Kisco Drive Sterling Heights MI 48310 Glue hardwood blocks secure cowls nacelle tops pan head screws Fuselage Make two fuselage sides using 3/~ balsa sheet Glue up pieces get length width Cut two 1/32 doublers glue inside fuselage sides Tape both sides together true up October 1994 43 Servo extension tubes 1/32 balsa tubes formed around 1/2-inchThe wing has sheeted ailerons installed temporarily dowel Install before joining wing panelswhile tip blocks cut shaped Wing ready covernote nacelle cutouts LE Stab framework has completed hinging progress Balsa plug made lay up fiberglass engine nacelle top also available Fiberglass Specialties Make wing cutout using sabre saw fine-tooth blade Drill hole first start cut cut belly pan time Cut formers Lite Ply cross grain Lay fuselage sides plan mark inside former locations Tape clamp rear fuselage together Using two #64 rubber bands location install formers Check fuselage alignment using top view plan sure straight Zap cyanoacrylate glue joints Glue F-2A F-4b using spacers guide saw cut later Sheet bottom fuselage lfg balsa cross grain leaving front open help locating wing dowel plates Using scarf joints make up enough /8 x planks 54 inches long plank fuselage top Glue plank dead center top alternate plank bottom top both sides till filled Using method will have cut scarf joint either end shave down last plank fit either side After planking sand smooth fill cracks Red Devil one-time spackle Glue balsa nose block carve sand shape Lay fuselage upside down cradle Use Zona saw cut belly pan Remove center section F-3 Lay wing saddle check good fit Mark drill leading edge two I8 dowels Remove wing glue wing bolt plates fuselage side Use triangular stock Return wing saddle glue wing dowel plates through hole left front fuselage Align wing fuselage Drill tap plates 1/4.20 bolts Finish sheeting front fuselage fit belly pan use Zap bottle caps bolt conduits Just drill 1/4. inch hole top bottle cap insert bolt tighten down wing fill around cap flush job Using scrap 3/ balsa act spacer fin stab glue balsa block both sides fin carve sand shape Remove scrap Now have slots accept fin stab Build rudder stabilizer 3/g balsa Dry-fit Sig Easy Hinges Cut hole rudder bottom Glue Formica 1/32 plywood 032 aluminum side form pocket tail wheel Use 2-56 bolt axle have used type wheel least six different aircraft have never pulled rudder off Glue fin subfin fuselage stab can slid temporarily install servos pushrods After fuselage has painted finished covered stab can permanently installed Controls Use servo engine servo elevator half servo aileron 1/4-scale servo rudder Use 4-40 pushrods ailerons tail surfaces Aileron throw 3/4 inch way elevator inch way rudder can get like lot control movement use exponential dual rates born 44 Model Aviation ne nacelle top cowl removed Nacelle sides 1/8Nacelle installation progress Bottom sheeting crossbalsa doubled 1/32 plywoodgrained l/e balsa Wheels four inches diameter Fuselage planking progress Alternating strips up oneBottle tops used wing bolt recesses belly pan down makes job easierplace bottle tops can trimmed level Wing stab checked Robart meter 00 incidenceSeparate pushrods used elevator half Elevator can still Stab glued place pointbe removed point covering Note tail wheel Tail group pilot 15-inch Sig canopy Surfaces builtCanopy attched button-head screws Fuselage finished I8 balsa mated Sig Easy Hingeswith light fiberglass cloth Z-poxy resin fingers Finish I covered wing stabilizer UltraCote used light glass cloth Z-poxy finishing resin fuselage rudder fin used Sig Koverall nitrate dope coated fuselage cowls nacelle tops auto primer painted Hobbypoxy trim also Hobbypoxy pilot installed under 15-inch Sig bubble canopy plans show plywood block glued fuselage balance point large screw eye fits Hang assembled aircraft hook balance using Robart incidence meter looking 00 Mine came out nose heavy moved radio battery rearward achieve balance now time flight testing Flying The main thing twin get two engines running reliably ran both engines thru full tank fuel checked idle high speed plane held level nose pointing straight up Everything checked out just fine filled both fuel tanks pumped up retract air tank range-checked radio controls everything go taxiied out midfield applied full power What beautiful sound two engines make Takeoff straightno veering After climbout turned right put nose down make pass over field heard awful sound aileron flutter Editors note See article flutter issue immediately cut power made emergency landing good smooth touchdown Witch handled very well aileron partly working Checking damage found S 148 servo stripped gears both 2-56 pushrods bent Back workshop installed two new 59201 HD servos 4-40 pushrods also counterbalanced both ailerons using 1/16 music wire imbedded aileron mid-span 3/4-ounce lead slider sinker epoxied wire end forward hingeline cured flutter problem next flights uneventful Witch very stable will standard maneuvers Takeoffs landings breeze am confident Witch will fly engine out So would like build fine flying twin send set plans cant beat sound twin ber 1994 45 Type RO sport Wlngapen 84 inches Engine elzeAype Two OS Max 90s Number eervoe 7 Flying weight 17 pounds Conetrucilon Built-up CoverlngflnIeh Hobbypoxy UltraCote NO OCR TEXT MIO USE ROCKUIUUGLASI SOUCUMUJIS WINO nS lUSTS UWS 0$ SKEET UICEUK SODSuUrUSOCKLEK 0MKUUft00E / 5054 UUU U U/IIKSL1A 551 OU$ftUSLUDSUAUSSIa 0COURYSUKSUSIE QKKSUo SMOT USCOCLI SIDES 555 IUSULT flEM ELI UTlBOLSD 501ST SKEI4 AD USSUC 556 ISEDUS I4 - UUSSCACOgOCU SflCm mm 4554$ SO 0 Ut SO 0555 PUs 11W ST VUUIS 1St SMUt 11514 US$51 PLACEUIICESSUUUTO RU ASKS ISU CU 14555UIIN 2 WITCH CRAFT IDESNED DRAWN BY 3 JOHN TANZER ALL RIGHTS REVED K/7TANSASA A AA IA VtSDAA REARLJA BALSA ERAS /7 -Il TAO WA 2 IAAAA ASLRIAN STOCK LATISATIA IJAALSA TIASANI ASATA SAtAN 5591Q STAG SECTION NT TIC S -TI JOINER SOAK SALT AAAA tACKJA C AJSA BLOAT NASTALLAS B SNATAN AFTER RAtTlES AlAS LA O Q -AtpCp@jj TOMCAT TOSA FAR *55 BK OT A0-Q K-SQ -A ALP INSCIT PAST SPOt NASA START2 EATA SAAb A-A I AhS AJAR 545A AJAR WITCH CRAFT DESIGNED DRAWN BY JOHN TANZER 993 StAT IT NT TTA STARTS RIGHTS RESERVED 0 0 CD 0 Co 0 i C D CD 0 CD 0 0
Edition: Model Aviation - 1994/10
Page Numbers: 39, 40, 41, 43, 44, 45, 46, 47, 48
NO OCR TEXT NO OCR TEXT NO OCR TEXT same Remove second wing panel plan install vertical-grain shear webs Fit 3/33 balsa sheet between ribs up against spars Mark inside cut form I-beam mark top bottom spar face glue spars channel Either will job Make servo extension tubes soaking 1/32 x 2 balsa sheet taping place around 1/2-inch dowel Remove dry glue wing panels before joining wings together Weight wing panel using /8 sq shim keep level Butt second panel first 1 1/2-inch block under tip rib get proper dihedral Glue /8 plywood spar joiners using epoxy clamp till set Glue balsa block trailing edge hard point wing bolts Turn wing over bottom up sheet leading trailing edges 3/33 balsa sheet Sheet center section out rib 5 add capstrips Turn wing right side up weight wing panel time using re shim keep level Using Robart incidence meter root rib set wing 00 Use meter check tip rib 0 degrees sure panel twisted can sheet leading trailing edges glue dry repeat procedure other wing panel should guarantee straight wing Add capstrips center section sheeting Attach 3/ x 1 leading edge plane shape Drill two 3/ holes leading edge glue 3/g dowels Ailerons made two 3/ x 214 aileron stock glued together Dry-fit aileron wing Sig Easy Hinges will glued after aircraft covered Add balsa block center rear wing Cut wingtip blocks shape hollow lighten Glue tips finish shaping sanding wing Set wing aside now Cut four engine nacelle sides 1/ balsa sheet four doublers 1/33 plywood Cut two NA-2 NA-3 formers Lite Ply Place firewalls waxed paper flat work surface Stand up nacelle sides next firewall Using straightedge glue place Reinforce triangular stock Glue NA-2 proper location using tn-stock also now have rigid box Before adding nacelles wing best much work possible Mount engines fit cowls mount fit c wire landing gear Now can cut out bays between rib R-3 rib R-4 back spars Weight wing down work surface set 00 using Robart incidence meter Slide engine nacelles check 00 Turn wing over Glue NA-3 pulling rear nacelle together moisten necessary Sheet bottom nacelle I/ balsa cross grain can install fuel tanks servos time made nacelle tops using fiberglass balsa plug cowls nacelle tops available Fiberglass Specialties 38624 Mt Kisco Drive Sterling Heights MI 48310 Glue hardwood blocks secure cowls nacelle tops pan head screws Fuselage Make two fuselage sides using 3/~ balsa sheet Glue up pieces get length width Cut two 1/32 doublers glue inside fuselage sides Tape both sides together true up October 1994 43 Servo extension tubes 1/32 balsa tubes formed around 1/2-inchThe wing has sheeted ailerons installed temporarily dowel Install before joining wing panelswhile tip blocks cut shaped Wing ready covernote nacelle cutouts LE Stab framework has completed hinging progress Balsa plug made lay up fiberglass engine nacelle top also available Fiberglass Specialties Make wing cutout using sabre saw fine-tooth blade Drill hole first start cut cut belly pan time Cut formers Lite Ply cross grain Lay fuselage sides plan mark inside former locations Tape clamp rear fuselage together Using two #64 rubber bands location install formers Check fuselage alignment using top view plan sure straight Zap cyanoacrylate glue joints Glue F-2A F-4b using spacers guide saw cut later Sheet bottom fuselage lfg balsa cross grain leaving front open help locating wing dowel plates Using scarf joints make up enough /8 x planks 54 inches long plank fuselage top Glue plank dead center top alternate plank bottom top both sides till filled Using method will have cut scarf joint either end shave down last plank fit either side After planking sand smooth fill cracks Red Devil one-time spackle Glue balsa nose block carve sand shape Lay fuselage upside down cradle Use Zona saw cut belly pan Remove center section F-3 Lay wing saddle check good fit Mark drill leading edge two I8 dowels Remove wing glue wing bolt plates fuselage side Use triangular stock Return wing saddle glue wing dowel plates through hole left front fuselage Align wing fuselage Drill tap plates 1/4.20 bolts Finish sheeting front fuselage fit belly pan use Zap bottle caps bolt conduits Just drill 1/4. inch hole top bottle cap insert bolt tighten down wing fill around cap flush job Using scrap 3/ balsa act spacer fin stab glue balsa block both sides fin carve sand shape Remove scrap Now have slots accept fin stab Build rudder stabilizer 3/g balsa Dry-fit Sig Easy Hinges Cut hole rudder bottom Glue Formica 1/32 plywood 032 aluminum side form pocket tail wheel Use 2-56 bolt axle have used type wheel least six different aircraft have never pulled rudder off Glue fin subfin fuselage stab can slid temporarily install servos pushrods After fuselage has painted finished covered stab can permanently installed Controls Use servo engine servo elevator half servo aileron 1/4-scale servo rudder Use 4-40 pushrods ailerons tail surfaces Aileron throw 3/4 inch way elevator inch way rudder can get like lot control movement use exponential dual rates born 44 Model Aviation ne nacelle top cowl removed Nacelle sides 1/8Nacelle installation progress Bottom sheeting crossbalsa doubled 1/32 plywoodgrained l/e balsa Wheels four inches diameter Fuselage planking progress Alternating strips up oneBottle tops used wing bolt recesses belly pan down makes job easierplace bottle tops can trimmed level Wing stab checked Robart meter 00 incidenceSeparate pushrods used elevator half Elevator can still Stab glued place pointbe removed point covering Note tail wheel Tail group pilot 15-inch Sig canopy Surfaces builtCanopy attched button-head screws Fuselage finished I8 balsa mated Sig Easy Hingeswith light fiberglass cloth Z-poxy resin fingers Finish I covered wing stabilizer UltraCote used light glass cloth Z-poxy finishing resin fuselage rudder fin used Sig Koverall nitrate dope coated fuselage cowls nacelle tops auto primer painted Hobbypoxy trim also Hobbypoxy pilot installed under 15-inch Sig bubble canopy plans show plywood block glued fuselage balance point large screw eye fits Hang assembled aircraft hook balance using Robart incidence meter looking 00 Mine came out nose heavy moved radio battery rearward achieve balance now time flight testing Flying The main thing twin get two engines running reliably ran both engines thru full tank fuel checked idle high speed plane held level nose pointing straight up Everything checked out just fine filled both fuel tanks pumped up retract air tank range-checked radio controls everything go taxiied out midfield applied full power What beautiful sound two engines make Takeoff straightno veering After climbout turned right put nose down make pass over field heard awful sound aileron flutter Editors note See article flutter issue immediately cut power made emergency landing good smooth touchdown Witch handled very well aileron partly working Checking damage found S 148 servo stripped gears both 2-56 pushrods bent Back workshop installed two new 59201 HD servos 4-40 pushrods also counterbalanced both ailerons using 1/16 music wire imbedded aileron mid-span 3/4-ounce lead slider sinker epoxied wire end forward hingeline cured flutter problem next flights uneventful Witch very stable will standard maneuvers Takeoffs landings breeze am confident Witch will fly engine out So would like build fine flying twin send set plans cant beat sound twin ber 1994 45 Type RO sport Wlngapen 84 inches Engine elzeAype Two OS Max 90s Number eervoe 7 Flying weight 17 pounds Conetrucilon Built-up CoverlngflnIeh Hobbypoxy UltraCote NO OCR TEXT MIO USE ROCKUIUUGLASI SOUCUMUJIS WINO nS lUSTS UWS 0$ SKEET UICEUK SODSuUrUSOCKLEK 0MKUUft00E / 5054 UUU U U/IIKSL1A 551 OU$ftUSLUDSUAUSSIa 0COURYSUKSUSIE QKKSUo SMOT USCOCLI SIDES 555 IUSULT flEM ELI UTlBOLSD 501ST SKEI4 AD USSUC 556 ISEDUS I4 - UUSSCACOgOCU SflCm mm 4554$ SO 0 Ut SO 0555 PUs 11W ST VUUIS 1St SMUt 11514 US$51 PLACEUIICESSUUUTO RU ASKS ISU CU 14555UIIN 2 WITCH CRAFT IDESNED DRAWN BY 3 JOHN TANZER ALL RIGHTS REVED K/7TANSASA A AA IA VtSDAA REARLJA BALSA ERAS /7 -Il TAO WA 2 IAAAA ASLRIAN STOCK LATISATIA IJAALSA TIASANI ASATA SAtAN 5591Q STAG SECTION NT TIC S -TI JOINER SOAK SALT AAAA tACKJA C AJSA BLOAT NASTALLAS B SNATAN AFTER RAtTlES AlAS LA O Q -AtpCp@jj TOMCAT TOSA FAR *55 BK OT A0-Q K-SQ -A ALP INSCIT PAST SPOt NASA START2 EATA SAAb A-A I AhS AJAR 545A AJAR WITCH CRAFT DESIGNED DRAWN BY JOHN TANZER 993 StAT IT NT TTA STARTS RIGHTS RESERVED 0 0 CD 0 Co 0 i C D CD 0 CD 0 0
Edition: Model Aviation - 1994/10
Page Numbers: 39, 40, 41, 43, 44, 45, 46, 47, 48
NO OCR TEXT NO OCR TEXT NO OCR TEXT same Remove second wing panel plan install vertical-grain shear webs Fit 3/33 balsa sheet between ribs up against spars Mark inside cut form I-beam mark top bottom spar face glue spars channel Either will job Make servo extension tubes soaking 1/32 x 2 balsa sheet taping place around 1/2-inch dowel Remove dry glue wing panels before joining wings together Weight wing panel using /8 sq shim keep level Butt second panel first 1 1/2-inch block under tip rib get proper dihedral Glue /8 plywood spar joiners using epoxy clamp till set Glue balsa block trailing edge hard point wing bolts Turn wing over bottom up sheet leading trailing edges 3/33 balsa sheet Sheet center section out rib 5 add capstrips Turn wing right side up weight wing panel time using re shim keep level Using Robart incidence meter root rib set wing 00 Use meter check tip rib 0 degrees sure panel twisted can sheet leading trailing edges glue dry repeat procedure other wing panel should guarantee straight wing Add capstrips center section sheeting Attach 3/ x 1 leading edge plane shape Drill two 3/ holes leading edge glue 3/g dowels Ailerons made two 3/ x 214 aileron stock glued together Dry-fit aileron wing Sig Easy Hinges will glued after aircraft covered Add balsa block center rear wing Cut wingtip blocks shape hollow lighten Glue tips finish shaping sanding wing Set wing aside now Cut four engine nacelle sides 1/ balsa sheet four doublers 1/33 plywood Cut two NA-2 NA-3 formers Lite Ply Place firewalls waxed paper flat work surface Stand up nacelle sides next firewall Using straightedge glue place Reinforce triangular stock Glue NA-2 proper location using tn-stock also now have rigid box Before adding nacelles wing best much work possible Mount engines fit cowls mount fit c wire landing gear Now can cut out bays between rib R-3 rib R-4 back spars Weight wing down work surface set 00 using Robart incidence meter Slide engine nacelles check 00 Turn wing over Glue NA-3 pulling rear nacelle together moisten necessary Sheet bottom nacelle I/ balsa cross grain can install fuel tanks servos time made nacelle tops using fiberglass balsa plug cowls nacelle tops available Fiberglass Specialties 38624 Mt Kisco Drive Sterling Heights MI 48310 Glue hardwood blocks secure cowls nacelle tops pan head screws Fuselage Make two fuselage sides using 3/~ balsa sheet Glue up pieces get length width Cut two 1/32 doublers glue inside fuselage sides Tape both sides together true up October 1994 43 Servo extension tubes 1/32 balsa tubes formed around 1/2-inchThe wing has sheeted ailerons installed temporarily dowel Install before joining wing panelswhile tip blocks cut shaped Wing ready covernote nacelle cutouts LE Stab framework has completed hinging progress Balsa plug made lay up fiberglass engine nacelle top also available Fiberglass Specialties Make wing cutout using sabre saw fine-tooth blade Drill hole first start cut cut belly pan time Cut formers Lite Ply cross grain Lay fuselage sides plan mark inside former locations Tape clamp rear fuselage together Using two #64 rubber bands location install formers Check fuselage alignment using top view plan sure straight Zap cyanoacrylate glue joints Glue F-2A F-4b using spacers guide saw cut later Sheet bottom fuselage lfg balsa cross grain leaving front open help locating wing dowel plates Using scarf joints make up enough /8 x planks 54 inches long plank fuselage top Glue plank dead center top alternate plank bottom top both sides till filled Using method will have cut scarf joint either end shave down last plank fit either side After planking sand smooth fill cracks Red Devil one-time spackle Glue balsa nose block carve sand shape Lay fuselage upside down cradle Use Zona saw cut belly pan Remove center section F-3 Lay wing saddle check good fit Mark drill leading edge two I8 dowels Remove wing glue wing bolt plates fuselage side Use triangular stock Return wing saddle glue wing dowel plates through hole left front fuselage Align wing fuselage Drill tap plates 1/4.20 bolts Finish sheeting front fuselage fit belly pan use Zap bottle caps bolt conduits Just drill 1/4. inch hole top bottle cap insert bolt tighten down wing fill around cap flush job Using scrap 3/ balsa act spacer fin stab glue balsa block both sides fin carve sand shape Remove scrap Now have slots accept fin stab Build rudder stabilizer 3/g balsa Dry-fit Sig Easy Hinges Cut hole rudder bottom Glue Formica 1/32 plywood 032 aluminum side form pocket tail wheel Use 2-56 bolt axle have used type wheel least six different aircraft have never pulled rudder off Glue fin subfin fuselage stab can slid temporarily install servos pushrods After fuselage has painted finished covered stab can permanently installed Controls Use servo engine servo elevator half servo aileron 1/4-scale servo rudder Use 4-40 pushrods ailerons tail surfaces Aileron throw 3/4 inch way elevator inch way rudder can get like lot control movement use exponential dual rates born 44 Model Aviation ne nacelle top cowl removed Nacelle sides 1/8Nacelle installation progress Bottom sheeting crossbalsa doubled 1/32 plywoodgrained l/e balsa Wheels four inches diameter Fuselage planking progress Alternating strips up oneBottle tops used wing bolt recesses belly pan down makes job easierplace bottle tops can trimmed level Wing stab checked Robart meter 00 incidenceSeparate pushrods used elevator half Elevator can still Stab glued place pointbe removed point covering Note tail wheel Tail group pilot 15-inch Sig canopy Surfaces builtCanopy attched button-head screws Fuselage finished I8 balsa mated Sig Easy Hingeswith light fiberglass cloth Z-poxy resin fingers Finish I covered wing stabilizer UltraCote used light glass cloth Z-poxy finishing resin fuselage rudder fin used Sig Koverall nitrate dope coated fuselage cowls nacelle tops auto primer painted Hobbypoxy trim also Hobbypoxy pilot installed under 15-inch Sig bubble canopy plans show plywood block glued fuselage balance point large screw eye fits Hang assembled aircraft hook balance using Robart incidence meter looking 00 Mine came out nose heavy moved radio battery rearward achieve balance now time flight testing Flying The main thing twin get two engines running reliably ran both engines thru full tank fuel checked idle high speed plane held level nose pointing straight up Everything checked out just fine filled both fuel tanks pumped up retract air tank range-checked radio controls everything go taxiied out midfield applied full power What beautiful sound two engines make Takeoff straightno veering After climbout turned right put nose down make pass over field heard awful sound aileron flutter Editors note See article flutter issue immediately cut power made emergency landing good smooth touchdown Witch handled very well aileron partly working Checking damage found S 148 servo stripped gears both 2-56 pushrods bent Back workshop installed two new 59201 HD servos 4-40 pushrods also counterbalanced both ailerons using 1/16 music wire imbedded aileron mid-span 3/4-ounce lead slider sinker epoxied wire end forward hingeline cured flutter problem next flights uneventful Witch very stable will standard maneuvers Takeoffs landings breeze am confident Witch will fly engine out So would like build fine flying twin send set plans cant beat sound twin ber 1994 45 Type RO sport Wlngapen 84 inches Engine elzeAype Two OS Max 90s Number eervoe 7 Flying weight 17 pounds Conetrucilon Built-up CoverlngflnIeh Hobbypoxy UltraCote NO OCR TEXT MIO USE ROCKUIUUGLASI SOUCUMUJIS WINO nS lUSTS UWS 0$ SKEET UICEUK SODSuUrUSOCKLEK 0MKUUft00E / 5054 UUU U U/IIKSL1A 551 OU$ftUSLUDSUAUSSIa 0COURYSUKSUSIE QKKSUo SMOT USCOCLI SIDES 555 IUSULT flEM ELI UTlBOLSD 501ST SKEI4 AD USSUC 556 ISEDUS I4 - UUSSCACOgOCU SflCm mm 4554$ SO 0 Ut SO 0555 PUs 11W ST VUUIS 1St SMUt 11514 US$51 PLACEUIICESSUUUTO RU ASKS ISU CU 14555UIIN 2 WITCH CRAFT IDESNED DRAWN BY 3 JOHN TANZER ALL RIGHTS REVED K/7TANSASA A AA IA VtSDAA REARLJA BALSA ERAS /7 -Il TAO WA 2 IAAAA ASLRIAN STOCK LATISATIA IJAALSA TIASANI ASATA SAtAN 5591Q STAG SECTION NT TIC S -TI JOINER SOAK SALT AAAA tACKJA C AJSA BLOAT NASTALLAS B SNATAN AFTER RAtTlES AlAS LA O Q -AtpCp@jj TOMCAT TOSA FAR *55 BK OT A0-Q K-SQ -A ALP INSCIT PAST SPOt NASA START2 EATA SAAb A-A I AhS AJAR 545A AJAR WITCH CRAFT DESIGNED DRAWN BY JOHN TANZER 993 StAT IT NT TTA STARTS RIGHTS RESERVED 0 0 CD 0 Co 0 i C D CD 0 CD 0 0
Edition: Model Aviation - 1994/10
Page Numbers: 39, 40, 41, 43, 44, 45, 46, 47, 48
NO OCR TEXT NO OCR TEXT NO OCR TEXT same Remove second wing panel plan install vertical-grain shear webs Fit 3/33 balsa sheet between ribs up against spars Mark inside cut form I-beam mark top bottom spar face glue spars channel Either will job Make servo extension tubes soaking 1/32 x 2 balsa sheet taping place around 1/2-inch dowel Remove dry glue wing panels before joining wings together Weight wing panel using /8 sq shim keep level Butt second panel first 1 1/2-inch block under tip rib get proper dihedral Glue /8 plywood spar joiners using epoxy clamp till set Glue balsa block trailing edge hard point wing bolts Turn wing over bottom up sheet leading trailing edges 3/33 balsa sheet Sheet center section out rib 5 add capstrips Turn wing right side up weight wing panel time using re shim keep level Using Robart incidence meter root rib set wing 00 Use meter check tip rib 0 degrees sure panel twisted can sheet leading trailing edges glue dry repeat procedure other wing panel should guarantee straight wing Add capstrips center section sheeting Attach 3/ x 1 leading edge plane shape Drill two 3/ holes leading edge glue 3/g dowels Ailerons made two 3/ x 214 aileron stock glued together Dry-fit aileron wing Sig Easy Hinges will glued after aircraft covered Add balsa block center rear wing Cut wingtip blocks shape hollow lighten Glue tips finish shaping sanding wing Set wing aside now Cut four engine nacelle sides 1/ balsa sheet four doublers 1/33 plywood Cut two NA-2 NA-3 formers Lite Ply Place firewalls waxed paper flat work surface Stand up nacelle sides next firewall Using straightedge glue place Reinforce triangular stock Glue NA-2 proper location using tn-stock also now have rigid box Before adding nacelles wing best much work possible Mount engines fit cowls mount fit c wire landing gear Now can cut out bays between rib R-3 rib R-4 back spars Weight wing down work surface set 00 using Robart incidence meter Slide engine nacelles check 00 Turn wing over Glue NA-3 pulling rear nacelle together moisten necessary Sheet bottom nacelle I/ balsa cross grain can install fuel tanks servos time made nacelle tops using fiberglass balsa plug cowls nacelle tops available Fiberglass Specialties 38624 Mt Kisco Drive Sterling Heights MI 48310 Glue hardwood blocks secure cowls nacelle tops pan head screws Fuselage Make two fuselage sides using 3/~ balsa sheet Glue up pieces get length width Cut two 1/32 doublers glue inside fuselage sides Tape both sides together true up October 1994 43 Servo extension tubes 1/32 balsa tubes formed around 1/2-inchThe wing has sheeted ailerons installed temporarily dowel Install before joining wing panelswhile tip blocks cut shaped Wing ready covernote nacelle cutouts LE Stab framework has completed hinging progress Balsa plug made lay up fiberglass engine nacelle top also available Fiberglass Specialties Make wing cutout using sabre saw fine-tooth blade Drill hole first start cut cut belly pan time Cut formers Lite Ply cross grain Lay fuselage sides plan mark inside former locations Tape clamp rear fuselage together Using two #64 rubber bands location install formers Check fuselage alignment using top view plan sure straight Zap cyanoacrylate glue joints Glue F-2A F-4b using spacers guide saw cut later Sheet bottom fuselage lfg balsa cross grain leaving front open help locating wing dowel plates Using scarf joints make up enough /8 x planks 54 inches long plank fuselage top Glue plank dead center top alternate plank bottom top both sides till filled Using method will have cut scarf joint either end shave down last plank fit either side After planking sand smooth fill cracks Red Devil one-time spackle Glue balsa nose block carve sand shape Lay fuselage upside down cradle Use Zona saw cut belly pan Remove center section F-3 Lay wing saddle check good fit Mark drill leading edge two I8 dowels Remove wing glue wing bolt plates fuselage side Use triangular stock Return wing saddle glue wing dowel plates through hole left front fuselage Align wing fuselage Drill tap plates 1/4.20 bolts Finish sheeting front fuselage fit belly pan use Zap bottle caps bolt conduits Just drill 1/4. inch hole top bottle cap insert bolt tighten down wing fill around cap flush job Using scrap 3/ balsa act spacer fin stab glue balsa block both sides fin carve sand shape Remove scrap Now have slots accept fin stab Build rudder stabilizer 3/g balsa Dry-fit Sig Easy Hinges Cut hole rudder bottom Glue Formica 1/32 plywood 032 aluminum side form pocket tail wheel Use 2-56 bolt axle have used type wheel least six different aircraft have never pulled rudder off Glue fin subfin fuselage stab can slid temporarily install servos pushrods After fuselage has painted finished covered stab can permanently installed Controls Use servo engine servo elevator half servo aileron 1/4-scale servo rudder Use 4-40 pushrods ailerons tail surfaces Aileron throw 3/4 inch way elevator inch way rudder can get like lot control movement use exponential dual rates born 44 Model Aviation ne nacelle top cowl removed Nacelle sides 1/8Nacelle installation progress Bottom sheeting crossbalsa doubled 1/32 plywoodgrained l/e balsa Wheels four inches diameter Fuselage planking progress Alternating strips up oneBottle tops used wing bolt recesses belly pan down makes job easierplace bottle tops can trimmed level Wing stab checked Robart meter 00 incidenceSeparate pushrods used elevator half Elevator can still Stab glued place pointbe removed point covering Note tail wheel Tail group pilot 15-inch Sig canopy Surfaces builtCanopy attched button-head screws Fuselage finished I8 balsa mated Sig Easy Hingeswith light fiberglass cloth Z-poxy resin fingers Finish I covered wing stabilizer UltraCote used light glass cloth Z-poxy finishing resin fuselage rudder fin used Sig Koverall nitrate dope coated fuselage cowls nacelle tops auto primer painted Hobbypoxy trim also Hobbypoxy pilot installed under 15-inch Sig bubble canopy plans show plywood block glued fuselage balance point large screw eye fits Hang assembled aircraft hook balance using Robart incidence meter looking 00 Mine came out nose heavy moved radio battery rearward achieve balance now time flight testing Flying The main thing twin get two engines running reliably ran both engines thru full tank fuel checked idle high speed plane held level nose pointing straight up Everything checked out just fine filled both fuel tanks pumped up retract air tank range-checked radio controls everything go taxiied out midfield applied full power What beautiful sound two engines make Takeoff straightno veering After climbout turned right put nose down make pass over field heard awful sound aileron flutter Editors note See article flutter issue immediately cut power made emergency landing good smooth touchdown Witch handled very well aileron partly working Checking damage found S 148 servo stripped gears both 2-56 pushrods bent Back workshop installed two new 59201 HD servos 4-40 pushrods also counterbalanced both ailerons using 1/16 music wire imbedded aileron mid-span 3/4-ounce lead slider sinker epoxied wire end forward hingeline cured flutter problem next flights uneventful Witch very stable will standard maneuvers Takeoffs landings breeze am confident Witch will fly engine out So would like build fine flying twin send set plans cant beat sound twin ber 1994 45 Type RO sport Wlngapen 84 inches Engine elzeAype Two OS Max 90s Number eervoe 7 Flying weight 17 pounds Conetrucilon Built-up CoverlngflnIeh Hobbypoxy UltraCote NO OCR TEXT MIO USE ROCKUIUUGLASI SOUCUMUJIS WINO nS lUSTS UWS 0$ SKEET UICEUK SODSuUrUSOCKLEK 0MKUUft00E / 5054 UUU U U/IIKSL1A 551 OU$ftUSLUDSUAUSSIa 0COURYSUKSUSIE QKKSUo SMOT USCOCLI SIDES 555 IUSULT flEM ELI UTlBOLSD 501ST SKEI4 AD USSUC 556 ISEDUS I4 - UUSSCACOgOCU SflCm mm 4554$ SO 0 Ut SO 0555 PUs 11W ST VUUIS 1St SMUt 11514 US$51 PLACEUIICESSUUUTO RU ASKS ISU CU 14555UIIN 2 WITCH CRAFT IDESNED DRAWN BY 3 JOHN TANZER ALL RIGHTS REVED K/7TANSASA A AA IA VtSDAA REARLJA BALSA ERAS /7 -Il TAO WA 2 IAAAA ASLRIAN STOCK LATISATIA IJAALSA TIASANI ASATA SAtAN 5591Q STAG SECTION NT TIC S -TI JOINER SOAK SALT AAAA tACKJA C AJSA BLOAT NASTALLAS B SNATAN AFTER RAtTlES AlAS LA O Q -AtpCp@jj TOMCAT TOSA FAR *55 BK OT A0-Q K-SQ -A ALP INSCIT PAST SPOt NASA START2 EATA SAAb A-A I AhS AJAR 545A AJAR WITCH CRAFT DESIGNED DRAWN BY JOHN TANZER 993 StAT IT NT TTA STARTS RIGHTS RESERVED 0 0 CD 0 Co 0 i C D CD 0 CD 0 0
Edition: Model Aviation - 1994/10
Page Numbers: 39, 40, 41, 43, 44, 45, 46, 47, 48
NO OCR TEXT NO OCR TEXT NO OCR TEXT same Remove second wing panel plan install vertical-grain shear webs Fit 3/33 balsa sheet between ribs up against spars Mark inside cut form I-beam mark top bottom spar face glue spars channel Either will job Make servo extension tubes soaking 1/32 x 2 balsa sheet taping place around 1/2-inch dowel Remove dry glue wing panels before joining wings together Weight wing panel using /8 sq shim keep level Butt second panel first 1 1/2-inch block under tip rib get proper dihedral Glue /8 plywood spar joiners using epoxy clamp till set Glue balsa block trailing edge hard point wing bolts Turn wing over bottom up sheet leading trailing edges 3/33 balsa sheet Sheet center section out rib 5 add capstrips Turn wing right side up weight wing panel time using re shim keep level Using Robart incidence meter root rib set wing 00 Use meter check tip rib 0 degrees sure panel twisted can sheet leading trailing edges glue dry repeat procedure other wing panel should guarantee straight wing Add capstrips center section sheeting Attach 3/ x 1 leading edge plane shape Drill two 3/ holes leading edge glue 3/g dowels Ailerons made two 3/ x 214 aileron stock glued together Dry-fit aileron wing Sig Easy Hinges will glued after aircraft covered Add balsa block center rear wing Cut wingtip blocks shape hollow lighten Glue tips finish shaping sanding wing Set wing aside now Cut four engine nacelle sides 1/ balsa sheet four doublers 1/33 plywood Cut two NA-2 NA-3 formers Lite Ply Place firewalls waxed paper flat work surface Stand up nacelle sides next firewall Using straightedge glue place Reinforce triangular stock Glue NA-2 proper location using tn-stock also now have rigid box Before adding nacelles wing best much work possible Mount engines fit cowls mount fit c wire landing gear Now can cut out bays between rib R-3 rib R-4 back spars Weight wing down work surface set 00 using Robart incidence meter Slide engine nacelles check 00 Turn wing over Glue NA-3 pulling rear nacelle together moisten necessary Sheet bottom nacelle I/ balsa cross grain can install fuel tanks servos time made nacelle tops using fiberglass balsa plug cowls nacelle tops available Fiberglass Specialties 38624 Mt Kisco Drive Sterling Heights MI 48310 Glue hardwood blocks secure cowls nacelle tops pan head screws Fuselage Make two fuselage sides using 3/~ balsa sheet Glue up pieces get length width Cut two 1/32 doublers glue inside fuselage sides Tape both sides together true up October 1994 43 Servo extension tubes 1/32 balsa tubes formed around 1/2-inchThe wing has sheeted ailerons installed temporarily dowel Install before joining wing panelswhile tip blocks cut shaped Wing ready covernote nacelle cutouts LE Stab framework has completed hinging progress Balsa plug made lay up fiberglass engine nacelle top also available Fiberglass Specialties Make wing cutout using sabre saw fine-tooth blade Drill hole first start cut cut belly pan time Cut formers Lite Ply cross grain Lay fuselage sides plan mark inside former locations Tape clamp rear fuselage together Using two #64 rubber bands location install formers Check fuselage alignment using top view plan sure straight Zap cyanoacrylate glue joints Glue F-2A F-4b using spacers guide saw cut later Sheet bottom fuselage lfg balsa cross grain leaving front open help locating wing dowel plates Using scarf joints make up enough /8 x planks 54 inches long plank fuselage top Glue plank dead center top alternate plank bottom top both sides till filled Using method will have cut scarf joint either end shave down last plank fit either side After planking sand smooth fill cracks Red Devil one-time spackle Glue balsa nose block carve sand shape Lay fuselage upside down cradle Use Zona saw cut belly pan Remove center section F-3 Lay wing saddle check good fit Mark drill leading edge two I8 dowels Remove wing glue wing bolt plates fuselage side Use triangular stock Return wing saddle glue wing dowel plates through hole left front fuselage Align wing fuselage Drill tap plates 1/4.20 bolts Finish sheeting front fuselage fit belly pan use Zap bottle caps bolt conduits Just drill 1/4. inch hole top bottle cap insert bolt tighten down wing fill around cap flush job Using scrap 3/ balsa act spacer fin stab glue balsa block both sides fin carve sand shape Remove scrap Now have slots accept fin stab Build rudder stabilizer 3/g balsa Dry-fit Sig Easy Hinges Cut hole rudder bottom Glue Formica 1/32 plywood 032 aluminum side form pocket tail wheel Use 2-56 bolt axle have used type wheel least six different aircraft have never pulled rudder off Glue fin subfin fuselage stab can slid temporarily install servos pushrods After fuselage has painted finished covered stab can permanently installed Controls Use servo engine servo elevator half servo aileron 1/4-scale servo rudder Use 4-40 pushrods ailerons tail surfaces Aileron throw 3/4 inch way elevator inch way rudder can get like lot control movement use exponential dual rates born 44 Model Aviation ne nacelle top cowl removed Nacelle sides 1/8Nacelle installation progress Bottom sheeting crossbalsa doubled 1/32 plywoodgrained l/e balsa Wheels four inches diameter Fuselage planking progress Alternating strips up oneBottle tops used wing bolt recesses belly pan down makes job easierplace bottle tops can trimmed level Wing stab checked Robart meter 00 incidenceSeparate pushrods used elevator half Elevator can still Stab glued place pointbe removed point covering Note tail wheel Tail group pilot 15-inch Sig canopy Surfaces builtCanopy attched button-head screws Fuselage finished I8 balsa mated Sig Easy Hingeswith light fiberglass cloth Z-poxy resin fingers Finish I covered wing stabilizer UltraCote used light glass cloth Z-poxy finishing resin fuselage rudder fin used Sig Koverall nitrate dope coated fuselage cowls nacelle tops auto primer painted Hobbypoxy trim also Hobbypoxy pilot installed under 15-inch Sig bubble canopy plans show plywood block glued fuselage balance point large screw eye fits Hang assembled aircraft hook balance using Robart incidence meter looking 00 Mine came out nose heavy moved radio battery rearward achieve balance now time flight testing Flying The main thing twin get two engines running reliably ran both engines thru full tank fuel checked idle high speed plane held level nose pointing straight up Everything checked out just fine filled both fuel tanks pumped up retract air tank range-checked radio controls everything go taxiied out midfield applied full power What beautiful sound two engines make Takeoff straightno veering After climbout turned right put nose down make pass over field heard awful sound aileron flutter Editors note See article flutter issue immediately cut power made emergency landing good smooth touchdown Witch handled very well aileron partly working Checking damage found S 148 servo stripped gears both 2-56 pushrods bent Back workshop installed two new 59201 HD servos 4-40 pushrods also counterbalanced both ailerons using 1/16 music wire imbedded aileron mid-span 3/4-ounce lead slider sinker epoxied wire end forward hingeline cured flutter problem next flights uneventful Witch very stable will standard maneuvers Takeoffs landings breeze am confident Witch will fly engine out So would like build fine flying twin send set plans cant beat sound twin ber 1994 45 Type RO sport Wlngapen 84 inches Engine elzeAype Two OS Max 90s Number eervoe 7 Flying weight 17 pounds Conetrucilon Built-up CoverlngflnIeh Hobbypoxy UltraCote NO OCR TEXT MIO USE ROCKUIUUGLASI SOUCUMUJIS WINO nS lUSTS UWS 0$ SKEET UICEUK SODSuUrUSOCKLEK 0MKUUft00E / 5054 UUU U U/IIKSL1A 551 OU$ftUSLUDSUAUSSIa 0COURYSUKSUSIE QKKSUo SMOT USCOCLI SIDES 555 IUSULT flEM ELI UTlBOLSD 501ST SKEI4 AD USSUC 556 ISEDUS I4 - UUSSCACOgOCU SflCm mm 4554$ SO 0 Ut SO 0555 PUs 11W ST VUUIS 1St SMUt 11514 US$51 PLACEUIICESSUUUTO RU ASKS ISU CU 14555UIIN 2 WITCH CRAFT IDESNED DRAWN BY 3 JOHN TANZER ALL RIGHTS REVED K/7TANSASA A AA IA VtSDAA REARLJA BALSA ERAS /7 -Il TAO WA 2 IAAAA ASLRIAN STOCK LATISATIA IJAALSA TIASANI ASATA SAtAN 5591Q STAG SECTION NT TIC S -TI JOINER SOAK SALT AAAA tACKJA C AJSA BLOAT NASTALLAS B SNATAN AFTER RAtTlES AlAS LA O Q -AtpCp@jj TOMCAT TOSA FAR *55 BK OT A0-Q K-SQ -A ALP INSCIT PAST SPOt NASA START2 EATA SAAb A-A I AhS AJAR 545A AJAR WITCH CRAFT DESIGNED DRAWN BY JOHN TANZER 993 StAT IT NT TTA STARTS RIGHTS RESERVED 0 0 CD 0 Co 0 i C D CD 0 CD 0 0
Edition: Model Aviation - 1994/10
Page Numbers: 39, 40, 41, 43, 44, 45, 46, 47, 48
NO OCR TEXT NO OCR TEXT NO OCR TEXT same Remove second wing panel plan install vertical-grain shear webs Fit 3/33 balsa sheet between ribs up against spars Mark inside cut form I-beam mark top bottom spar face glue spars channel Either will job Make servo extension tubes soaking 1/32 x 2 balsa sheet taping place around 1/2-inch dowel Remove dry glue wing panels before joining wings together Weight wing panel using /8 sq shim keep level Butt second panel first 1 1/2-inch block under tip rib get proper dihedral Glue /8 plywood spar joiners using epoxy clamp till set Glue balsa block trailing edge hard point wing bolts Turn wing over bottom up sheet leading trailing edges 3/33 balsa sheet Sheet center section out rib 5 add capstrips Turn wing right side up weight wing panel time using re shim keep level Using Robart incidence meter root rib set wing 00 Use meter check tip rib 0 degrees sure panel twisted can sheet leading trailing edges glue dry repeat procedure other wing panel should guarantee straight wing Add capstrips center section sheeting Attach 3/ x 1 leading edge plane shape Drill two 3/ holes leading edge glue 3/g dowels Ailerons made two 3/ x 214 aileron stock glued together Dry-fit aileron wing Sig Easy Hinges will glued after aircraft covered Add balsa block center rear wing Cut wingtip blocks shape hollow lighten Glue tips finish shaping sanding wing Set wing aside now Cut four engine nacelle sides 1/ balsa sheet four doublers 1/33 plywood Cut two NA-2 NA-3 formers Lite Ply Place firewalls waxed paper flat work surface Stand up nacelle sides next firewall Using straightedge glue place Reinforce triangular stock Glue NA-2 proper location using tn-stock also now have rigid box Before adding nacelles wing best much work possible Mount engines fit cowls mount fit c wire landing gear Now can cut out bays between rib R-3 rib R-4 back spars Weight wing down work surface set 00 using Robart incidence meter Slide engine nacelles check 00 Turn wing over Glue NA-3 pulling rear nacelle together moisten necessary Sheet bottom nacelle I/ balsa cross grain can install fuel tanks servos time made nacelle tops using fiberglass balsa plug cowls nacelle tops available Fiberglass Specialties 38624 Mt Kisco Drive Sterling Heights MI 48310 Glue hardwood blocks secure cowls nacelle tops pan head screws Fuselage Make two fuselage sides using 3/~ balsa sheet Glue up pieces get length width Cut two 1/32 doublers glue inside fuselage sides Tape both sides together true up October 1994 43 Servo extension tubes 1/32 balsa tubes formed around 1/2-inchThe wing has sheeted ailerons installed temporarily dowel Install before joining wing panelswhile tip blocks cut shaped Wing ready covernote nacelle cutouts LE Stab framework has completed hinging progress Balsa plug made lay up fiberglass engine nacelle top also available Fiberglass Specialties Make wing cutout using sabre saw fine-tooth blade Drill hole first start cut cut belly pan time Cut formers Lite Ply cross grain Lay fuselage sides plan mark inside former locations Tape clamp rear fuselage together Using two #64 rubber bands location install formers Check fuselage alignment using top view plan sure straight Zap cyanoacrylate glue joints Glue F-2A F-4b using spacers guide saw cut later Sheet bottom fuselage lfg balsa cross grain leaving front open help locating wing dowel plates Using scarf joints make up enough /8 x planks 54 inches long plank fuselage top Glue plank dead center top alternate plank bottom top both sides till filled Using method will have cut scarf joint either end shave down last plank fit either side After planking sand smooth fill cracks Red Devil one-time spackle Glue balsa nose block carve sand shape Lay fuselage upside down cradle Use Zona saw cut belly pan Remove center section F-3 Lay wing saddle check good fit Mark drill leading edge two I8 dowels Remove wing glue wing bolt plates fuselage side Use triangular stock Return wing saddle glue wing dowel plates through hole left front fuselage Align wing fuselage Drill tap plates 1/4.20 bolts Finish sheeting front fuselage fit belly pan use Zap bottle caps bolt conduits Just drill 1/4. inch hole top bottle cap insert bolt tighten down wing fill around cap flush job Using scrap 3/ balsa act spacer fin stab glue balsa block both sides fin carve sand shape Remove scrap Now have slots accept fin stab Build rudder stabilizer 3/g balsa Dry-fit Sig Easy Hinges Cut hole rudder bottom Glue Formica 1/32 plywood 032 aluminum side form pocket tail wheel Use 2-56 bolt axle have used type wheel least six different aircraft have never pulled rudder off Glue fin subfin fuselage stab can slid temporarily install servos pushrods After fuselage has painted finished covered stab can permanently installed Controls Use servo engine servo elevator half servo aileron 1/4-scale servo rudder Use 4-40 pushrods ailerons tail surfaces Aileron throw 3/4 inch way elevator inch way rudder can get like lot control movement use exponential dual rates born 44 Model Aviation ne nacelle top cowl removed Nacelle sides 1/8Nacelle installation progress Bottom sheeting crossbalsa doubled 1/32 plywoodgrained l/e balsa Wheels four inches diameter Fuselage planking progress Alternating strips up oneBottle tops used wing bolt recesses belly pan down makes job easierplace bottle tops can trimmed level Wing stab checked Robart meter 00 incidenceSeparate pushrods used elevator half Elevator can still Stab glued place pointbe removed point covering Note tail wheel Tail group pilot 15-inch Sig canopy Surfaces builtCanopy attched button-head screws Fuselage finished I8 balsa mated Sig Easy Hingeswith light fiberglass cloth Z-poxy resin fingers Finish I covered wing stabilizer UltraCote used light glass cloth Z-poxy finishing resin fuselage rudder fin used Sig Koverall nitrate dope coated fuselage cowls nacelle tops auto primer painted Hobbypoxy trim also Hobbypoxy pilot installed under 15-inch Sig bubble canopy plans show plywood block glued fuselage balance point large screw eye fits Hang assembled aircraft hook balance using Robart incidence meter looking 00 Mine came out nose heavy moved radio battery rearward achieve balance now time flight testing Flying The main thing twin get two engines running reliably ran both engines thru full tank fuel checked idle high speed plane held level nose pointing straight up Everything checked out just fine filled both fuel tanks pumped up retract air tank range-checked radio controls everything go taxiied out midfield applied full power What beautiful sound two engines make Takeoff straightno veering After climbout turned right put nose down make pass over field heard awful sound aileron flutter Editors note See article flutter issue immediately cut power made emergency landing good smooth touchdown Witch handled very well aileron partly working Checking damage found S 148 servo stripped gears both 2-56 pushrods bent Back workshop installed two new 59201 HD servos 4-40 pushrods also counterbalanced both ailerons using 1/16 music wire imbedded aileron mid-span 3/4-ounce lead slider sinker epoxied wire end forward hingeline cured flutter problem next flights uneventful Witch very stable will standard maneuvers Takeoffs landings breeze am confident Witch will fly engine out So would like build fine flying twin send set plans cant beat sound twin ber 1994 45 Type RO sport Wlngapen 84 inches Engine elzeAype Two OS Max 90s Number eervoe 7 Flying weight 17 pounds Conetrucilon Built-up CoverlngflnIeh Hobbypoxy UltraCote NO OCR TEXT MIO USE ROCKUIUUGLASI SOUCUMUJIS WINO nS lUSTS UWS 0$ SKEET UICEUK SODSuUrUSOCKLEK 0MKUUft00E / 5054 UUU U U/IIKSL1A 551 OU$ftUSLUDSUAUSSIa 0COURYSUKSUSIE QKKSUo SMOT USCOCLI SIDES 555 IUSULT flEM ELI UTlBOLSD 501ST SKEI4 AD USSUC 556 ISEDUS I4 - UUSSCACOgOCU SflCm mm 4554$ SO 0 Ut SO 0555 PUs 11W ST VUUIS 1St SMUt 11514 US$51 PLACEUIICESSUUUTO RU ASKS ISU CU 14555UIIN 2 WITCH CRAFT IDESNED DRAWN BY 3 JOHN TANZER ALL RIGHTS REVED K/7TANSASA A AA IA VtSDAA REARLJA BALSA ERAS /7 -Il TAO WA 2 IAAAA ASLRIAN STOCK LATISATIA IJAALSA TIASANI ASATA SAtAN 5591Q STAG SECTION NT TIC S -TI JOINER SOAK SALT AAAA tACKJA C AJSA BLOAT NASTALLAS B SNATAN AFTER RAtTlES AlAS LA O Q -AtpCp@jj TOMCAT TOSA FAR *55 BK OT A0-Q K-SQ -A ALP INSCIT PAST SPOt NASA START2 EATA SAAb A-A I AhS AJAR 545A AJAR WITCH CRAFT DESIGNED DRAWN BY JOHN TANZER 993 StAT IT NT TTA STARTS RIGHTS RESERVED 0 0 CD 0 Co 0 i C D CD 0 CD 0 0
Edition: Model Aviation - 1994/10
Page Numbers: 39, 40, 41, 43, 44, 45, 46, 47, 48
NO OCR TEXT NO OCR TEXT NO OCR TEXT same Remove second wing panel plan install vertical-grain shear webs Fit 3/33 balsa sheet between ribs up against spars Mark inside cut form I-beam mark top bottom spar face glue spars channel Either will job Make servo extension tubes soaking 1/32 x 2 balsa sheet taping place around 1/2-inch dowel Remove dry glue wing panels before joining wings together Weight wing panel using /8 sq shim keep level Butt second panel first 1 1/2-inch block under tip rib get proper dihedral Glue /8 plywood spar joiners using epoxy clamp till set Glue balsa block trailing edge hard point wing bolts Turn wing over bottom up sheet leading trailing edges 3/33 balsa sheet Sheet center section out rib 5 add capstrips Turn wing right side up weight wing panel time using re shim keep level Using Robart incidence meter root rib set wing 00 Use meter check tip rib 0 degrees sure panel twisted can sheet leading trailing edges glue dry repeat procedure other wing panel should guarantee straight wing Add capstrips center section sheeting Attach 3/ x 1 leading edge plane shape Drill two 3/ holes leading edge glue 3/g dowels Ailerons made two 3/ x 214 aileron stock glued together Dry-fit aileron wing Sig Easy Hinges will glued after aircraft covered Add balsa block center rear wing Cut wingtip blocks shape hollow lighten Glue tips finish shaping sanding wing Set wing aside now Cut four engine nacelle sides 1/ balsa sheet four doublers 1/33 plywood Cut two NA-2 NA-3 formers Lite Ply Place firewalls waxed paper flat work surface Stand up nacelle sides next firewall Using straightedge glue place Reinforce triangular stock Glue NA-2 proper location using tn-stock also now have rigid box Before adding nacelles wing best much work possible Mount engines fit cowls mount fit c wire landing gear Now can cut out bays between rib R-3 rib R-4 back spars Weight wing down work surface set 00 using Robart incidence meter Slide engine nacelles check 00 Turn wing over Glue NA-3 pulling rear nacelle together moisten necessary Sheet bottom nacelle I/ balsa cross grain can install fuel tanks servos time made nacelle tops using fiberglass balsa plug cowls nacelle tops available Fiberglass Specialties 38624 Mt Kisco Drive Sterling Heights MI 48310 Glue hardwood blocks secure cowls nacelle tops pan head screws Fuselage Make two fuselage sides using 3/~ balsa sheet Glue up pieces get length width Cut two 1/32 doublers glue inside fuselage sides Tape both sides together true up October 1994 43 Servo extension tubes 1/32 balsa tubes formed around 1/2-inchThe wing has sheeted ailerons installed temporarily dowel Install before joining wing panelswhile tip blocks cut shaped Wing ready covernote nacelle cutouts LE Stab framework has completed hinging progress Balsa plug made lay up fiberglass engine nacelle top also available Fiberglass Specialties Make wing cutout using sabre saw fine-tooth blade Drill hole first start cut cut belly pan time Cut formers Lite Ply cross grain Lay fuselage sides plan mark inside former locations Tape clamp rear fuselage together Using two #64 rubber bands location install formers Check fuselage alignment using top view plan sure straight Zap cyanoacrylate glue joints Glue F-2A F-4b using spacers guide saw cut later Sheet bottom fuselage lfg balsa cross grain leaving front open help locating wing dowel plates Using scarf joints make up enough /8 x planks 54 inches long plank fuselage top Glue plank dead center top alternate plank bottom top both sides till filled Using method will have cut scarf joint either end shave down last plank fit either side After planking sand smooth fill cracks Red Devil one-time spackle Glue balsa nose block carve sand shape Lay fuselage upside down cradle Use Zona saw cut belly pan Remove center section F-3 Lay wing saddle check good fit Mark drill leading edge two I8 dowels Remove wing glue wing bolt plates fuselage side Use triangular stock Return wing saddle glue wing dowel plates through hole left front fuselage Align wing fuselage Drill tap plates 1/4.20 bolts Finish sheeting front fuselage fit belly pan use Zap bottle caps bolt conduits Just drill 1/4. inch hole top bottle cap insert bolt tighten down wing fill around cap flush job Using scrap 3/ balsa act spacer fin stab glue balsa block both sides fin carve sand shape Remove scrap Now have slots accept fin stab Build rudder stabilizer 3/g balsa Dry-fit Sig Easy Hinges Cut hole rudder bottom Glue Formica 1/32 plywood 032 aluminum side form pocket tail wheel Use 2-56 bolt axle have used type wheel least six different aircraft have never pulled rudder off Glue fin subfin fuselage stab can slid temporarily install servos pushrods After fuselage has painted finished covered stab can permanently installed Controls Use servo engine servo elevator half servo aileron 1/4-scale servo rudder Use 4-40 pushrods ailerons tail surfaces Aileron throw 3/4 inch way elevator inch way rudder can get like lot control movement use exponential dual rates born 44 Model Aviation ne nacelle top cowl removed Nacelle sides 1/8Nacelle installation progress Bottom sheeting crossbalsa doubled 1/32 plywoodgrained l/e balsa Wheels four inches diameter Fuselage planking progress Alternating strips up oneBottle tops used wing bolt recesses belly pan down makes job easierplace bottle tops can trimmed level Wing stab checked Robart meter 00 incidenceSeparate pushrods used elevator half Elevator can still Stab glued place pointbe removed point covering Note tail wheel Tail group pilot 15-inch Sig canopy Surfaces builtCanopy attched button-head screws Fuselage finished I8 balsa mated Sig Easy Hingeswith light fiberglass cloth Z-poxy resin fingers Finish I covered wing stabilizer UltraCote used light glass cloth Z-poxy finishing resin fuselage rudder fin used Sig Koverall nitrate dope coated fuselage cowls nacelle tops auto primer painted Hobbypoxy trim also Hobbypoxy pilot installed under 15-inch Sig bubble canopy plans show plywood block glued fuselage balance point large screw eye fits Hang assembled aircraft hook balance using Robart incidence meter looking 00 Mine came out nose heavy moved radio battery rearward achieve balance now time flight testing Flying The main thing twin get two engines running reliably ran both engines thru full tank fuel checked idle high speed plane held level nose pointing straight up Everything checked out just fine filled both fuel tanks pumped up retract air tank range-checked radio controls everything go taxiied out midfield applied full power What beautiful sound two engines make Takeoff straightno veering After climbout turned right put nose down make pass over field heard awful sound aileron flutter Editors note See article flutter issue immediately cut power made emergency landing good smooth touchdown Witch handled very well aileron partly working Checking damage found S 148 servo stripped gears both 2-56 pushrods bent Back workshop installed two new 59201 HD servos 4-40 pushrods also counterbalanced both ailerons using 1/16 music wire imbedded aileron mid-span 3/4-ounce lead slider sinker epoxied wire end forward hingeline cured flutter problem next flights uneventful Witch very stable will standard maneuvers Takeoffs landings breeze am confident Witch will fly engine out So would like build fine flying twin send set plans cant beat sound twin ber 1994 45 Type RO sport Wlngapen 84 inches Engine elzeAype Two OS Max 90s Number eervoe 7 Flying weight 17 pounds Conetrucilon Built-up CoverlngflnIeh Hobbypoxy UltraCote NO OCR TEXT MIO USE ROCKUIUUGLASI SOUCUMUJIS WINO nS lUSTS UWS 0$ SKEET UICEUK SODSuUrUSOCKLEK 0MKUUft00E / 5054 UUU U U/IIKSL1A 551 OU$ftUSLUDSUAUSSIa 0COURYSUKSUSIE QKKSUo SMOT USCOCLI SIDES 555 IUSULT flEM ELI UTlBOLSD 501ST SKEI4 AD USSUC 556 ISEDUS I4 - UUSSCACOgOCU SflCm mm 4554$ SO 0 Ut SO 0555 PUs 11W ST VUUIS 1St SMUt 11514 US$51 PLACEUIICESSUUUTO RU ASKS ISU CU 14555UIIN 2 WITCH CRAFT IDESNED DRAWN BY 3 JOHN TANZER ALL RIGHTS REVED K/7TANSASA A AA IA VtSDAA REARLJA BALSA ERAS /7 -Il TAO WA 2 IAAAA ASLRIAN STOCK LATISATIA IJAALSA TIASANI ASATA SAtAN 5591Q STAG SECTION NT TIC S -TI JOINER SOAK SALT AAAA tACKJA C AJSA BLOAT NASTALLAS B SNATAN AFTER RAtTlES AlAS LA O Q -AtpCp@jj TOMCAT TOSA FAR *55 BK OT A0-Q K-SQ -A ALP INSCIT PAST SPOt NASA START2 EATA SAAb A-A I AhS AJAR 545A AJAR WITCH CRAFT DESIGNED DRAWN BY JOHN TANZER 993 StAT IT NT TTA STARTS RIGHTS RESERVED 0 0 CD 0 Co 0 i C D CD 0 CD 0 0
Edition: Model Aviation - 1994/10
Page Numbers: 39, 40, 41, 43, 44, 45, 46, 47, 48
NO OCR TEXT NO OCR TEXT NO OCR TEXT same Remove second wing panel plan install vertical-grain shear webs Fit 3/33 balsa sheet between ribs up against spars Mark inside cut form I-beam mark top bottom spar face glue spars channel Either will job Make servo extension tubes soaking 1/32 x 2 balsa sheet taping place around 1/2-inch dowel Remove dry glue wing panels before joining wings together Weight wing panel using /8 sq shim keep level Butt second panel first 1 1/2-inch block under tip rib get proper dihedral Glue /8 plywood spar joiners using epoxy clamp till set Glue balsa block trailing edge hard point wing bolts Turn wing over bottom up sheet leading trailing edges 3/33 balsa sheet Sheet center section out rib 5 add capstrips Turn wing right side up weight wing panel time using re shim keep level Using Robart incidence meter root rib set wing 00 Use meter check tip rib 0 degrees sure panel twisted can sheet leading trailing edges glue dry repeat procedure other wing panel should guarantee straight wing Add capstrips center section sheeting Attach 3/ x 1 leading edge plane shape Drill two 3/ holes leading edge glue 3/g dowels Ailerons made two 3/ x 214 aileron stock glued together Dry-fit aileron wing Sig Easy Hinges will glued after aircraft covered Add balsa block center rear wing Cut wingtip blocks shape hollow lighten Glue tips finish shaping sanding wing Set wing aside now Cut four engine nacelle sides 1/ balsa sheet four doublers 1/33 plywood Cut two NA-2 NA-3 formers Lite Ply Place firewalls waxed paper flat work surface Stand up nacelle sides next firewall Using straightedge glue place Reinforce triangular stock Glue NA-2 proper location using tn-stock also now have rigid box Before adding nacelles wing best much work possible Mount engines fit cowls mount fit c wire landing gear Now can cut out bays between rib R-3 rib R-4 back spars Weight wing down work surface set 00 using Robart incidence meter Slide engine nacelles check 00 Turn wing over Glue NA-3 pulling rear nacelle together moisten necessary Sheet bottom nacelle I/ balsa cross grain can install fuel tanks servos time made nacelle tops using fiberglass balsa plug cowls nacelle tops available Fiberglass Specialties 38624 Mt Kisco Drive Sterling Heights MI 48310 Glue hardwood blocks secure cowls nacelle tops pan head screws Fuselage Make two fuselage sides using 3/~ balsa sheet Glue up pieces get length width Cut two 1/32 doublers glue inside fuselage sides Tape both sides together true up October 1994 43 Servo extension tubes 1/32 balsa tubes formed around 1/2-inchThe wing has sheeted ailerons installed temporarily dowel Install before joining wing panelswhile tip blocks cut shaped Wing ready covernote nacelle cutouts LE Stab framework has completed hinging progress Balsa plug made lay up fiberglass engine nacelle top also available Fiberglass Specialties Make wing cutout using sabre saw fine-tooth blade Drill hole first start cut cut belly pan time Cut formers Lite Ply cross grain Lay fuselage sides plan mark inside former locations Tape clamp rear fuselage together Using two #64 rubber bands location install formers Check fuselage alignment using top view plan sure straight Zap cyanoacrylate glue joints Glue F-2A F-4b using spacers guide saw cut later Sheet bottom fuselage lfg balsa cross grain leaving front open help locating wing dowel plates Using scarf joints make up enough /8 x planks 54 inches long plank fuselage top Glue plank dead center top alternate plank bottom top both sides till filled Using method will have cut scarf joint either end shave down last plank fit either side After planking sand smooth fill cracks Red Devil one-time spackle Glue balsa nose block carve sand shape Lay fuselage upside down cradle Use Zona saw cut belly pan Remove center section F-3 Lay wing saddle check good fit Mark drill leading edge two I8 dowels Remove wing glue wing bolt plates fuselage side Use triangular stock Return wing saddle glue wing dowel plates through hole left front fuselage Align wing fuselage Drill tap plates 1/4.20 bolts Finish sheeting front fuselage fit belly pan use Zap bottle caps bolt conduits Just drill 1/4. inch hole top bottle cap insert bolt tighten down wing fill around cap flush job Using scrap 3/ balsa act spacer fin stab glue balsa block both sides fin carve sand shape Remove scrap Now have slots accept fin stab Build rudder stabilizer 3/g balsa Dry-fit Sig Easy Hinges Cut hole rudder bottom Glue Formica 1/32 plywood 032 aluminum side form pocket tail wheel Use 2-56 bolt axle have used type wheel least six different aircraft have never pulled rudder off Glue fin subfin fuselage stab can slid temporarily install servos pushrods After fuselage has painted finished covered stab can permanently installed Controls Use servo engine servo elevator half servo aileron 1/4-scale servo rudder Use 4-40 pushrods ailerons tail surfaces Aileron throw 3/4 inch way elevator inch way rudder can get like lot control movement use exponential dual rates born 44 Model Aviation ne nacelle top cowl removed Nacelle sides 1/8Nacelle installation progress Bottom sheeting crossbalsa doubled 1/32 plywoodgrained l/e balsa Wheels four inches diameter Fuselage planking progress Alternating strips up oneBottle tops used wing bolt recesses belly pan down makes job easierplace bottle tops can trimmed level Wing stab checked Robart meter 00 incidenceSeparate pushrods used elevator half Elevator can still Stab glued place pointbe removed point covering Note tail wheel Tail group pilot 15-inch Sig canopy Surfaces builtCanopy attched button-head screws Fuselage finished I8 balsa mated Sig Easy Hingeswith light fiberglass cloth Z-poxy resin fingers Finish I covered wing stabilizer UltraCote used light glass cloth Z-poxy finishing resin fuselage rudder fin used Sig Koverall nitrate dope coated fuselage cowls nacelle tops auto primer painted Hobbypoxy trim also Hobbypoxy pilot installed under 15-inch Sig bubble canopy plans show plywood block glued fuselage balance point large screw eye fits Hang assembled aircraft hook balance using Robart incidence meter looking 00 Mine came out nose heavy moved radio battery rearward achieve balance now time flight testing Flying The main thing twin get two engines running reliably ran both engines thru full tank fuel checked idle high speed plane held level nose pointing straight up Everything checked out just fine filled both fuel tanks pumped up retract air tank range-checked radio controls everything go taxiied out midfield applied full power What beautiful sound two engines make Takeoff straightno veering After climbout turned right put nose down make pass over field heard awful sound aileron flutter Editors note See article flutter issue immediately cut power made emergency landing good smooth touchdown Witch handled very well aileron partly working Checking damage found S 148 servo stripped gears both 2-56 pushrods bent Back workshop installed two new 59201 HD servos 4-40 pushrods also counterbalanced both ailerons using 1/16 music wire imbedded aileron mid-span 3/4-ounce lead slider sinker epoxied wire end forward hingeline cured flutter problem next flights uneventful Witch very stable will standard maneuvers Takeoffs landings breeze am confident Witch will fly engine out So would like build fine flying twin send set plans cant beat sound twin ber 1994 45 Type RO sport Wlngapen 84 inches Engine elzeAype Two OS Max 90s Number eervoe 7 Flying weight 17 pounds Conetrucilon Built-up CoverlngflnIeh Hobbypoxy UltraCote NO OCR TEXT MIO USE ROCKUIUUGLASI SOUCUMUJIS WINO nS lUSTS UWS 0$ SKEET UICEUK SODSuUrUSOCKLEK 0MKUUft00E / 5054 UUU U U/IIKSL1A 551 OU$ftUSLUDSUAUSSIa 0COURYSUKSUSIE QKKSUo SMOT USCOCLI SIDES 555 IUSULT flEM ELI UTlBOLSD 501ST SKEI4 AD USSUC 556 ISEDUS I4 - UUSSCACOgOCU SflCm mm 4554$ SO 0 Ut SO 0555 PUs 11W ST VUUIS 1St SMUt 11514 US$51 PLACEUIICESSUUUTO RU ASKS ISU CU 14555UIIN 2 WITCH CRAFT IDESNED DRAWN BY 3 JOHN TANZER ALL RIGHTS REVED K/7TANSASA A AA IA VtSDAA REARLJA BALSA ERAS /7 -Il TAO WA 2 IAAAA ASLRIAN STOCK LATISATIA IJAALSA TIASANI ASATA SAtAN 5591Q STAG SECTION NT TIC S -TI JOINER SOAK SALT AAAA tACKJA C AJSA BLOAT NASTALLAS B SNATAN AFTER RAtTlES AlAS LA O Q -AtpCp@jj TOMCAT TOSA FAR *55 BK OT A0-Q K-SQ -A ALP INSCIT PAST SPOt NASA START2 EATA SAAb A-A I AhS AJAR 545A AJAR WITCH CRAFT DESIGNED DRAWN BY JOHN TANZER 993 StAT IT NT TTA STARTS RIGHTS RESERVED 0 0 CD 0 Co 0 i C D CD 0 CD 0 0