NO OCR TEXT NO OCR TEXT completed uncovered model Thisylew plus plansand cutawaydrawing should make everything cleat Among 40-size engines used have K&B HP 05 Nose gear installation deta picture DuBrosteering arm us ed Engine mounting simple used Blue Max prototypes have powered K&B 40 HP 40 OS 40 engines have worked well HP OS seemed give better vertical performance Before go construction plane let say highperformance talk does mean Blue Max hard fly contrary plane very easy fly would hesitate recommend flier very little time flying aileron trainer thing would have keep control throws far maximum have never able find single bad trait Blue Max proto types have five including shown pictures 24Model Aviation build Blue Max much fun can have h can fun-fly events right plane Construction First make yoi Cut out major parts start gluing building pro go much easier Left Aileron installation author uses ball link connectors Top Right Take off hatch back what servos rudder elevator Above Right wing removed fuel tank battery throttle Left Tail surfaces stralgnuorwara simple Adjust control throws according text start wnn tnei ever setting feels comfortable Right dont need cut lightening holes wing ribs WN N FiT -CIIP OFF N T14E AV/k-I S WUT FAWCVS IM 51 - -WAZELS 4TI- CUB -CHUCI OFF IN CHINA! -ME-IMIN sI-IW III / FLY 1/16 CAP STRIPS OPND BOTTOM 6 I/32LITE PLY DCIJBLER UPTO NOSE REIN F jLOCK SERVO ROD TO NOSE WHEEL 7I/4XI/2LEFIN T E POST AND FIN MOUNT 1/4 SHEET TAPERED RUDDER 3/16 X 1/4 SPRUCE LE AND SPAR I/32LITE PLY AFT DOUBLER 3/16 SPRUCE ELEV JOINER 3/16 SHEET ELEVATcRS 1/4 SHEET VENTRAL WITH I/16SKID I/B SHEEr BALSA SIDES I/4 FRAMES 1/8 SHEET BALSA lOP/BOTTOM CRCSGRAIN I/B LITE-PLY SPAR _____________ REINFORCING C/S ONLY I/B LITE PLY RIB REINF OVER 1/4 DOWEL HOLD DOWNN 1/4 DOWEL INTO I/B PLYWDOD BLOCK I/BBALSA HATCH TRIANGLE STOCK 1/4 PLY FIREWALL KM 40 MOUNT DU BRO STEER ARM 2 WHEEL ON 3/16 3/16 STEERABLE NOSE GEAR 7 / / / 2 I/2WHEELS ON DUBRO /AXLES 1/16 PLYWOOD10 32 LE JOINERNYLON BOLTS SIG SKYBOLT L GEAR ON I/8FLY MOUNT THRU V2SOSPRUCE I/16LITE SHEET ALLLEAND CS 3/16 X 1/4 SPRUCE SPARS 7 I/8LITEpLY HAICH IIA I/B SHEET WEBS 1/850 SPRUCE L E 1/32 PLYDO FUSELA3E DOUBLER I/16x TE SHEET TOP AND BOTTOM 1/4 X 3/8 AILERON SPAR 3/8x 11/2 AILERO~J 7 7 1/32 PLY TIP PLATES 3/32Th1B5 ALL SAME SHAPE Left left wing panel under construction Note marks top ribs right panel should built same place atop plans rib marking bottom Right Left rightwlng panels assembled center rib Has unique construction Left Assembled wing balsa sheeting ready glued leading edge wrapped around top bottom piece Right sheeting has installed right wing panel hasnt yet trimmed center rib Photos author ribs can made either two ways first make stack blank balsa pieces cut ribs same time jigsaw band saw second method make rib template plywood metal cut out rib separately leaving little extra around edges stack ribs pin together can sanded final shape After ribs cut out sanded use felt-tip pen mark top side ribs still stacked done make sure airfoil same along wing though airfoil supposed symmetrical its very hard make perfect ribs side usually little different other lightening holes optional cut out because look good under transparent MonoKote rest parts should cut out match plans Wing Construction little different sport planes build Start pinning down bottom trailing edge TE sheet over left-hand portion plans shape 3/ x / TE piece match taper back ribs glue top sheet already pinned down Next put piece /16 scrap plans 2 in front TE sheet support front ribs sit properly Now glue %2 ribs half wing keeping square work sur face must sure ribs glued down marked side up Add sq spruce leading edge LE strip top bottom Y16 x / spruce spars sure leave little extra length center can later cut exact length needed perfect fit center rib right panel dry panel can re moved plan right panel can built over same area difference right panel should assembled marked side ribs down Glue balsa shear webs both panels center rib should now construct ed first gluing Lite Ply doublers both sides sure grain direction shown plans Cut center 26Model Aviation XII ietropfliestfle aL rna I-un ny VUI1I5 wiui EIIUUUUO IJfl Max series its best performance winds light-to-medluim 1/8 LITE PLY1/4 DOWEL1/8 SO SPRUCELEADING EDGE SHEETING IS ONE -I/IS LIGHT BALSACG RANGE 3/3D BALSA EDGE DREETING _______________OPTIONALI/IR 3/B BALSA CAPSYRIPS I/4 3/B BALSABALSA AILERON1/4 BALSA TRAILING EDGE 1/83/18 ALGA TIP PLATES LAMINATEDPLYWOOD2ITYPICAL WING RIB FROM I/3D PLYWLOD AND 1/16 BALSA-PLY TOWARDS THE INSIDESPAR JOINER ENTER RIBTYPICAL CENTER RIBI/43/IB DWBLERSPRUCE 1/32 PLYWOOD DOUBLERS WING TIP PLATE7 FUSELAGE OUBLER 3/IRI/4ELEVATOR 1/4 BALSA SHEET 1/4 BALSA________________ I/O TRI S OUTLINE OF STOCKFUSELAGE SIDES SIDE NOT SHOWN FIN INCIDENCE1/B BALSA SHEETFOR CLARITY OR OS-SI OSITIVESIDES TOPABOTTOM [v32][b-1-10-1-10]]ItBEVEL V/i 7XIIl/Al ON RAFTL/-1Il//Il DL 4 TANK- - 1/32 PLYI IyyAIl//Il RECEIVER -DOUBLERR(JDDR CO RANGEI/O TRI-STOCI LEVATOR AND RUDDER rII lii F4 THROTTLE ERVO AREAISPRUCE -2BATTERY AREAAREA O CIS M-40IF-IEND OFDOUBLER __CU MOUNTI/DSG SPRUCE WITH I/BPLYWOODSIDETOP AND BOTTOM _F2 TAPPED HOLES GEAR MOUNT FUSELAGESHEETING IS CROSS-- STEERINGVIEW ARM 4S35S0 0/IS NOSE GEAR FON COMPlUSE 010 SKYBOLT GEARDESIRES SHAPE OF SKYBOLTMA GABA GA SPORT F LY INS CON SIMILAR MOUNTED 5/52 IWITH 10-32 NYLON BOLTS MODEL AV ATION I/B LITE PLYSKYBOLT GEAR 2 WHEEL j 2-1/4 WHEELS ONORIGINAL SHAPE BANNER OR OD-BROIIDES GNED BY 3 M ALLEN JR AXLES0 2 ELAGE HATCH LANDING GEAR PATTERNRAC NG BY JOE DEMARCO 5____________________________ BKTS RESERVED FULL-SIZE PLANS AVAILABLESEE PAGE 164 rib shown dotted lines plan A-in-wide section cut out clear / ply spar joiner Glue center rib back together spar joiner place section cut out LE joiner should slid slot front center rib glued place assembly shown photos wing halves now glued together center rib Start test-fitting three pieces together cutting spars LE necessary over plan make sure sweepback set proper angle satisfied fit line up wing over plan prop up level Measure distance center LE table same thing TE wing should set up measurements same both right left panel glue together center rib Sheet leading edge done side time Start edge-gluing three /16 x 3 x 36 sheets together edgewise making sheet 9 36 Two sheets size required side Get bowl hot water small sponge wet outside sheets Wipe hot water center third sheet lengthwise let soak few minutes sheet soaking spread glue structure front spar sheet will stick thick cyanoacrylate CyA glues should used operation Stand wing up TE locate center sheet wet side out over LE Roll sheeting down onto both top bottom same time rub don glue can set dry trim excess sheet off around edges center rib other half wing done same manner trimmed center rib putting sheeting After both halves sheeted check warps arent great no problem sheeting warped side must split placing straightedge bottom sheeting cutting along center tip razor blade X-Acto knife twist wing straight reglue sheeting cut Use regular CyA glue process will easily remove twists panels providing cap strips center sheeting have installed top center sheeting cap strips now added Flip wing over bottom facing cut center rib clear aileron servo Add spruce servo rails shown pictures Scraps wing spar wood good purpose Glue bottom center sheeting cap strips cut hole aileron servo sheeting next step install aileron horns center TE pieces suggest using Du-Bro similar aileron horns Make TE pieces out sheet balsa x 1 TE stock can find size trailing edge stock can make things much easier Groove front pieces clear aileron horns glue place over horns careful get glue wire will bind up link age Make ailerons either sheet balsa x 1% TE stock Add A2 ply wing bolt doublers top bottom shown plan tips now made laminating A2 ply /16 balsa should glued until wing tips have covered glued plywood facing inside Fuselage Start gluing A2 ply dou blers front rear sure make right left side Make formers sticks shown plan F-2 should cut out shown dotted lines plan depending what tank intend use tank Kraft Slimline 4 oz what use dont need cut former Please note top piece F-2 made sq spruce helps support Left Bottom view wing center section after leading edge center sheeting have added Note servo cutout cen ter rib rails have added Right Center section now compiete hoie servo aileron horns installed Left Fuselage doublers being glued place Note marks behind doublersto avoid building two side Right ship has doublers rear weilwhich author notes very important ldeaily Blue Max II should come out weighing about 3 lb 28Model Aviation center rib aasemiy nas completed sparand leading edge joiners have glued piace have doublers loads wing mount side laying flat table doublers up glue Formers F-2 F-3 place using triangle make sure square Glue other side top two formers Drill firewall engine mount fuel lines pushrods Glue firewall front glue A-in triangle stock behind Place assembly over top view plan pin down Pull rear fuselage together glue sure straight Glue Former F-4 ply landing gear mounting plate should glued bottom x spruce glued top should now glue Lite Ply hatch frame Put bottom cross-grain sheeting A-in triangle around gear mount shown plan Drill tap landing gear mount 10-32 nylon bolts planes have used Sig Skybolt landing gearrebent desired shape front view proper shape shown plan dotted lines shown shape Skybolt gear buy am sure aluminum landing gears will work fine particular gear inexpensive readily available Place hatch position glue balsa fillers both sides Drill hatch mount wood screws outer Ny-rod tubes rudder Continued page 117 February 198529 Left Glue formers TO 0fl sloe using triangle make sure theyre square dry glue amer sloe picture Right firewall complete blind mounting nuts glued place balsa triangle stock added corners strength ii Left Dowel wing through /a plywood plate holds wing front securely Install plywood plate wing place good fit Right 1/4 plywood rear mounting plate being installed wax paper between wing bottom fuselage eft landing gear installed 10-32 nylon bolts Author uses Sig Skybolt landing gear reshaped per plans Right Jote vertical fin post embedded rear fuselage post greatly strengthens fin Installation ltS sturdy model times control rudder flyaways common Todays models neutral stability superior aerobatic performance generally bite dust seconds after loss radio signal As Sam pointed out devices cur rently market will retard throttle event interference loss transmitter signalbut require power on-board battery pack order function readers have simple solution close engine throttle upon loss power onboard battery pack please drop line Meanwhile please make sure airborne battery packs wont ejected takeoff could result just embaTrassment Have safe month John Preston 12235 Tilden wood Dr Rockville MD 20852 Blue Max/Allen Continued page 29 elevator should glued now Remem ber have come up hatch area Make sure exit fuse lage sides far enough forward interfere rudder post Mount completed wing fuse lage. First open hole dowel will go center rib test-fit dowel glue Line up wing fuselage make sure centered square dowel temporarily place slide ply wing mount place dowel glue front F-2 move wing until glue dry triangle stock can now added front wing mount wing still place slide piece wax paper between wing TE fuselage rear mounting plate glued Use 5-mm epoxy glue ply plate place under wing Hold firmly against bottom wing until glue has set Remove wax paper double check make sure wing straight Now drill down through wing doublers through mounting plate Drill out hole wing /I6 tap hole plate 10-32 bolt Add baisa top block fuselage front wing top rear balsa crossgrain sheeting Tall surfaces Build over plan shown sure use spruce leap ing trailing edges stab Cut tle hole top fuselage sheeting clear x rudder post leave part out adds great deal strength installed fin Glue stab bottom fuse lage making sure properly aligned Glue fin sub-fin place Sand rudder tapered shape suggest cut out lightening holes shown plan tail Blue Max quite long everything rear should kept light possible Finishing touches Final-sand everything cover plane ironon covering materials strongly recom mend MonoKote its strength ease application also make hinges Out same material have never failure Install engine mount nose gear nose gear goes up through mount steering arm just below mount wheel collar either inside top mount hold gear place know someone coil bender strongly recommend use Y6-in wire nose gear heavyduty struts save lot props case bender available %2-in gear will work just fine Install tank run fuel lines through center mount Mount engine 6-32 bolts out mount far enough leave room fuel lines come through Mount rudder elevator servos back under hatch Make sure far enough rearward allow receiver placed just ahead Use cable pushrod go rudder servo nose gear cable housing should firmly glued down over its en tire length prevent flexing throttle servo mounted aileron ser vo tray just ahead F-3 flat floor cable pushrod should used throttle also Battery location fuselage depends needed balancing purposes normally under wing right behind tank aileron servo mounted wing rails installed earlier Use sheet metal screws attaching servo con ventional manner CG should fall somewhere between limits shown plan best way check CG place fingers under spars both sides wing slide fingers out equally both sides limits method shown wing plan Desired control throws starting ailerons Y6 up down elevator own rudder 1A left right throws will give easy-to-fly responsive airplane After some test flights throws can adjusted whatever flier feels comfortable first flight open throttle holding slight back pressure elevator will lift off ground about 30 40 feet Let clImb out can get feel way flies its up Blue Max very versatile airplane Continued page 120 February 1 98511 7 Safety/Preston Continued page 20 especially tough events require tight maneuvering quick landings feel Blue Max superior almost event has ever flown inun til gets windy wind starts blow heavier 60-size planes have definite advantage scaled-up 60 ver sion plane might future proj ect cure problem am sure will disappointed Blue Max II Anyone has ever flown has fallen love its fly ing characteristics Have fun Fun/Winter Continued page 33 weight etc have long run-time overall duration probably will greater highest altitude will reached fly less think best-rateof-climb angle assumes means less dead weight hang prop due climb better duration plane merely device keep power system off ground until energy consumed think true Rubber Scale Indoor models applies everywhere concern have power burn tank full gas dont have power burn small-engined powered Sailplane Electric Gas angle climb frustratingly shallow very long run gets plane up launch height easily Sailplane stalls such shallow angle tiny prop just soon puttoo much dead weightupon hanging li-in drill sure throws chips disk area prop comes mind does 1/16-in drill air blast 12- 13-in folder times greater screaming 6-4 tiny prop stalls hold same nose-up steadily can dethermalize way groundat full throttle Textbook experts frothing know mans meat anothers poison John Worth AMA executive director now has LeCrate insists trying possible approach no matter unlikely Hes flying poor thing death though seems worse wear Gordon Burford Australia gave him l0-in-dia Pylon prop Yes Pylon pitch unknown Its strange club prop blades squared off outside hub lots blade area high pitch near hub almost flat near tips Thin blades sharp edges would pay dime Electrics John added 3 mm best time itand six 12 Ah cells insted seven just 2-to-i reduction switched 800 mAb cells Duration virtually same around 13 minutes could get pinpoint height once flight used speed controller could regain height second time 800s John gets pin point height second time same flight using controller extended cruise shallow climb Evans Wing modification Bill Evans modification own Simitar Deuce extremely happy airplane six flights Don Srull testing fiddling sticks along way find wing have few special traits trail-dragger ship starts roll full up hold full up way until 5 6 ft high runs along snappily two-thirds throttle steering rudder find best Using aileron trim soaring circles engine idling dead eventually model beings wind down occasional stick needed have 2A dihedral tip 5-ft wing trim circle rudder alone maintains altitude add touch inside aileron another rudder aileron rudder end up almost flat tight hands-off circles pushed extreme crossed controls eventually see what looks like rudder reversal comes out circle no needs turn dime still-lower vertical tail perhaps dorsal fin would cure truly no need speed range wide ship obviously highly efficient lightened structure electric power would make absolute world-beater grossly overpowered 19 should 120Model Aviation Blue Max/Allen Continued page 117 Great Lakes Model Company 517876-7825 100 Michigan Ave AuGres MI 48703 Send SASE flincher Deuler Inquiries Welcome List Price $28500 Factory Direct $22800 Michiganresidontsadd4%salestax VINTASI R-C PLAN CONSOLIDATED PlY-BA CATALINA 9FT WINGSPAN ALL RIASS FULL FORMERS SHOWN ON PLANS11 PLASTIC ENGCOWLS PR CLEAR GUN BLiSTERS $660 PR 4 LARGE PLAN SHEETS Plans $1695 GFT WING SPAN MODEL PSY-SA ENGINE COWLS $ 650 PR Plans $1295 GUN fiLISTERS $ 430 PR ADD S2O POSTAGE CATALOGOVER 50 PLANS tiDo DEALERS WRITE WORLD 0 WWE SID MORGAN 13157 ORMONDBELLEVILLE MICH48111 USA AT-6 SNJ-HARVARD 63375 Wingspan ngine s Complete
Edition: Model Aviation - 1985/02
Page Numbers: 22, 23, 24, 25, 26, 27, 28, 29, 117, 120
NO OCR TEXT NO OCR TEXT completed uncovered model Thisylew plus plansand cutawaydrawing should make everything cleat Among 40-size engines used have K&B HP 05 Nose gear installation deta picture DuBrosteering arm us ed Engine mounting simple used Blue Max prototypes have powered K&B 40 HP 40 OS 40 engines have worked well HP OS seemed give better vertical performance Before go construction plane let say highperformance talk does mean Blue Max hard fly contrary plane very easy fly would hesitate recommend flier very little time flying aileron trainer thing would have keep control throws far maximum have never able find single bad trait Blue Max proto types have five including shown pictures 24Model Aviation build Blue Max much fun can have h can fun-fly events right plane Construction First make yoi Cut out major parts start gluing building pro go much easier Left Aileron installation author uses ball link connectors Top Right Take off hatch back what servos rudder elevator Above Right wing removed fuel tank battery throttle Left Tail surfaces stralgnuorwara simple Adjust control throws according text start wnn tnei ever setting feels comfortable Right dont need cut lightening holes wing ribs WN N FiT -CIIP OFF N T14E AV/k-I S WUT FAWCVS IM 51 - -WAZELS 4TI- CUB -CHUCI OFF IN CHINA! -ME-IMIN sI-IW III / FLY 1/16 CAP STRIPS OPND BOTTOM 6 I/32LITE PLY DCIJBLER UPTO NOSE REIN F jLOCK SERVO ROD TO NOSE WHEEL 7I/4XI/2LEFIN T E POST AND FIN MOUNT 1/4 SHEET TAPERED RUDDER 3/16 X 1/4 SPRUCE LE AND SPAR I/32LITE PLY AFT DOUBLER 3/16 SPRUCE ELEV JOINER 3/16 SHEET ELEVATcRS 1/4 SHEET VENTRAL WITH I/16SKID I/B SHEEr BALSA SIDES I/4 FRAMES 1/8 SHEET BALSA lOP/BOTTOM CRCSGRAIN I/B LITE-PLY SPAR _____________ REINFORCING C/S ONLY I/B LITE PLY RIB REINF OVER 1/4 DOWEL HOLD DOWNN 1/4 DOWEL INTO I/B PLYWDOD BLOCK I/BBALSA HATCH TRIANGLE STOCK 1/4 PLY FIREWALL KM 40 MOUNT DU BRO STEER ARM 2 WHEEL ON 3/16 3/16 STEERABLE NOSE GEAR 7 / / / 2 I/2WHEELS ON DUBRO /AXLES 1/16 PLYWOOD10 32 LE JOINERNYLON BOLTS SIG SKYBOLT L GEAR ON I/8FLY MOUNT THRU V2SOSPRUCE I/16LITE SHEET ALLLEAND CS 3/16 X 1/4 SPRUCE SPARS 7 I/8LITEpLY HAICH IIA I/B SHEET WEBS 1/850 SPRUCE L E 1/32 PLYDO FUSELA3E DOUBLER I/16x TE SHEET TOP AND BOTTOM 1/4 X 3/8 AILERON SPAR 3/8x 11/2 AILERO~J 7 7 1/32 PLY TIP PLATES 3/32Th1B5 ALL SAME SHAPE Left left wing panel under construction Note marks top ribs right panel should built same place atop plans rib marking bottom Right Left rightwlng panels assembled center rib Has unique construction Left Assembled wing balsa sheeting ready glued leading edge wrapped around top bottom piece Right sheeting has installed right wing panel hasnt yet trimmed center rib Photos author ribs can made either two ways first make stack blank balsa pieces cut ribs same time jigsaw band saw second method make rib template plywood metal cut out rib separately leaving little extra around edges stack ribs pin together can sanded final shape After ribs cut out sanded use felt-tip pen mark top side ribs still stacked done make sure airfoil same along wing though airfoil supposed symmetrical its very hard make perfect ribs side usually little different other lightening holes optional cut out because look good under transparent MonoKote rest parts should cut out match plans Wing Construction little different sport planes build Start pinning down bottom trailing edge TE sheet over left-hand portion plans shape 3/ x / TE piece match taper back ribs glue top sheet already pinned down Next put piece /16 scrap plans 2 in front TE sheet support front ribs sit properly Now glue %2 ribs half wing keeping square work sur face must sure ribs glued down marked side up Add sq spruce leading edge LE strip top bottom Y16 x / spruce spars sure leave little extra length center can later cut exact length needed perfect fit center rib right panel dry panel can re moved plan right panel can built over same area difference right panel should assembled marked side ribs down Glue balsa shear webs both panels center rib should now construct ed first gluing Lite Ply doublers both sides sure grain direction shown plans Cut center 26Model Aviation XII ietropfliestfle aL rna I-un ny VUI1I5 wiui EIIUUUUO IJfl Max series its best performance winds light-to-medluim 1/8 LITE PLY1/4 DOWEL1/8 SO SPRUCELEADING EDGE SHEETING IS ONE -I/IS LIGHT BALSACG RANGE 3/3D BALSA EDGE DREETING _______________OPTIONALI/IR 3/B BALSA CAPSYRIPS I/4 3/B BALSABALSA AILERON1/4 BALSA TRAILING EDGE 1/83/18 ALGA TIP PLATES LAMINATEDPLYWOOD2ITYPICAL WING RIB FROM I/3D PLYWLOD AND 1/16 BALSA-PLY TOWARDS THE INSIDESPAR JOINER ENTER RIBTYPICAL CENTER RIBI/43/IB DWBLERSPRUCE 1/32 PLYWOOD DOUBLERS WING TIP PLATE7 FUSELAGE OUBLER 3/IRI/4ELEVATOR 1/4 BALSA SHEET 1/4 BALSA________________ I/O TRI S OUTLINE OF STOCKFUSELAGE SIDES SIDE NOT SHOWN FIN INCIDENCE1/B BALSA SHEETFOR CLARITY OR OS-SI OSITIVESIDES TOPABOTTOM [v32][b-1-10-1-10]]ItBEVEL V/i 7XIIl/Al ON RAFTL/-1Il//Il DL 4 TANK- - 1/32 PLYI IyyAIl//Il RECEIVER -DOUBLERR(JDDR CO RANGEI/O TRI-STOCI LEVATOR AND RUDDER rII lii F4 THROTTLE ERVO AREAISPRUCE -2BATTERY AREAAREA O CIS M-40IF-IEND OFDOUBLER __CU MOUNTI/DSG SPRUCE WITH I/BPLYWOODSIDETOP AND BOTTOM _F2 TAPPED HOLES GEAR MOUNT FUSELAGESHEETING IS CROSS-- STEERINGVIEW ARM 4S35S0 0/IS NOSE GEAR FON COMPlUSE 010 SKYBOLT GEARDESIRES SHAPE OF SKYBOLTMA GABA GA SPORT F LY INS CON SIMILAR MOUNTED 5/52 IWITH 10-32 NYLON BOLTS MODEL AV ATION I/B LITE PLYSKYBOLT GEAR 2 WHEEL j 2-1/4 WHEELS ONORIGINAL SHAPE BANNER OR OD-BROIIDES GNED BY 3 M ALLEN JR AXLES0 2 ELAGE HATCH LANDING GEAR PATTERNRAC NG BY JOE DEMARCO 5____________________________ BKTS RESERVED FULL-SIZE PLANS AVAILABLESEE PAGE 164 rib shown dotted lines plan A-in-wide section cut out clear / ply spar joiner Glue center rib back together spar joiner place section cut out LE joiner should slid slot front center rib glued place assembly shown photos wing halves now glued together center rib Start test-fitting three pieces together cutting spars LE necessary over plan make sure sweepback set proper angle satisfied fit line up wing over plan prop up level Measure distance center LE table same thing TE wing should set up measurements same both right left panel glue together center rib Sheet leading edge done side time Start edge-gluing three /16 x 3 x 36 sheets together edgewise making sheet 9 36 Two sheets size required side Get bowl hot water small sponge wet outside sheets Wipe hot water center third sheet lengthwise let soak few minutes sheet soaking spread glue structure front spar sheet will stick thick cyanoacrylate CyA glues should used operation Stand wing up TE locate center sheet wet side out over LE Roll sheeting down onto both top bottom same time rub don glue can set dry trim excess sheet off around edges center rib other half wing done same manner trimmed center rib putting sheeting After both halves sheeted check warps arent great no problem sheeting warped side must split placing straightedge bottom sheeting cutting along center tip razor blade X-Acto knife twist wing straight reglue sheeting cut Use regular CyA glue process will easily remove twists panels providing cap strips center sheeting have installed top center sheeting cap strips now added Flip wing over bottom facing cut center rib clear aileron servo Add spruce servo rails shown pictures Scraps wing spar wood good purpose Glue bottom center sheeting cap strips cut hole aileron servo sheeting next step install aileron horns center TE pieces suggest using Du-Bro similar aileron horns Make TE pieces out sheet balsa x 1 TE stock can find size trailing edge stock can make things much easier Groove front pieces clear aileron horns glue place over horns careful get glue wire will bind up link age Make ailerons either sheet balsa x 1% TE stock Add A2 ply wing bolt doublers top bottom shown plan tips now made laminating A2 ply /16 balsa should glued until wing tips have covered glued plywood facing inside Fuselage Start gluing A2 ply dou blers front rear sure make right left side Make formers sticks shown plan F-2 should cut out shown dotted lines plan depending what tank intend use tank Kraft Slimline 4 oz what use dont need cut former Please note top piece F-2 made sq spruce helps support Left Bottom view wing center section after leading edge center sheeting have added Note servo cutout cen ter rib rails have added Right Center section now compiete hoie servo aileron horns installed Left Fuselage doublers being glued place Note marks behind doublersto avoid building two side Right ship has doublers rear weilwhich author notes very important ldeaily Blue Max II should come out weighing about 3 lb 28Model Aviation center rib aasemiy nas completed sparand leading edge joiners have glued piace have doublers loads wing mount side laying flat table doublers up glue Formers F-2 F-3 place using triangle make sure square Glue other side top two formers Drill firewall engine mount fuel lines pushrods Glue firewall front glue A-in triangle stock behind Place assembly over top view plan pin down Pull rear fuselage together glue sure straight Glue Former F-4 ply landing gear mounting plate should glued bottom x spruce glued top should now glue Lite Ply hatch frame Put bottom cross-grain sheeting A-in triangle around gear mount shown plan Drill tap landing gear mount 10-32 nylon bolts planes have used Sig Skybolt landing gearrebent desired shape front view proper shape shown plan dotted lines shown shape Skybolt gear buy am sure aluminum landing gears will work fine particular gear inexpensive readily available Place hatch position glue balsa fillers both sides Drill hatch mount wood screws outer Ny-rod tubes rudder Continued page 117 February 198529 Left Glue formers TO 0fl sloe using triangle make sure theyre square dry glue amer sloe picture Right firewall complete blind mounting nuts glued place balsa triangle stock added corners strength ii Left Dowel wing through /a plywood plate holds wing front securely Install plywood plate wing place good fit Right 1/4 plywood rear mounting plate being installed wax paper between wing bottom fuselage eft landing gear installed 10-32 nylon bolts Author uses Sig Skybolt landing gear reshaped per plans Right Jote vertical fin post embedded rear fuselage post greatly strengthens fin Installation ltS sturdy model times control rudder flyaways common Todays models neutral stability superior aerobatic performance generally bite dust seconds after loss radio signal As Sam pointed out devices cur rently market will retard throttle event interference loss transmitter signalbut require power on-board battery pack order function readers have simple solution close engine throttle upon loss power onboard battery pack please drop line Meanwhile please make sure airborne battery packs wont ejected takeoff could result just embaTrassment Have safe month John Preston 12235 Tilden wood Dr Rockville MD 20852 Blue Max/Allen Continued page 29 elevator should glued now Remem ber have come up hatch area Make sure exit fuse lage sides far enough forward interfere rudder post Mount completed wing fuse lage. First open hole dowel will go center rib test-fit dowel glue Line up wing fuselage make sure centered square dowel temporarily place slide ply wing mount place dowel glue front F-2 move wing until glue dry triangle stock can now added front wing mount wing still place slide piece wax paper between wing TE fuselage rear mounting plate glued Use 5-mm epoxy glue ply plate place under wing Hold firmly against bottom wing until glue has set Remove wax paper double check make sure wing straight Now drill down through wing doublers through mounting plate Drill out hole wing /I6 tap hole plate 10-32 bolt Add baisa top block fuselage front wing top rear balsa crossgrain sheeting Tall surfaces Build over plan shown sure use spruce leap ing trailing edges stab Cut tle hole top fuselage sheeting clear x rudder post leave part out adds great deal strength installed fin Glue stab bottom fuse lage making sure properly aligned Glue fin sub-fin place Sand rudder tapered shape suggest cut out lightening holes shown plan tail Blue Max quite long everything rear should kept light possible Finishing touches Final-sand everything cover plane ironon covering materials strongly recom mend MonoKote its strength ease application also make hinges Out same material have never failure Install engine mount nose gear nose gear goes up through mount steering arm just below mount wheel collar either inside top mount hold gear place know someone coil bender strongly recommend use Y6-in wire nose gear heavyduty struts save lot props case bender available %2-in gear will work just fine Install tank run fuel lines through center mount Mount engine 6-32 bolts out mount far enough leave room fuel lines come through Mount rudder elevator servos back under hatch Make sure far enough rearward allow receiver placed just ahead Use cable pushrod go rudder servo nose gear cable housing should firmly glued down over its en tire length prevent flexing throttle servo mounted aileron ser vo tray just ahead F-3 flat floor cable pushrod should used throttle also Battery location fuselage depends needed balancing purposes normally under wing right behind tank aileron servo mounted wing rails installed earlier Use sheet metal screws attaching servo con ventional manner CG should fall somewhere between limits shown plan best way check CG place fingers under spars both sides wing slide fingers out equally both sides limits method shown wing plan Desired control throws starting ailerons Y6 up down elevator own rudder 1A left right throws will give easy-to-fly responsive airplane After some test flights throws can adjusted whatever flier feels comfortable first flight open throttle holding slight back pressure elevator will lift off ground about 30 40 feet Let clImb out can get feel way flies its up Blue Max very versatile airplane Continued page 120 February 1 98511 7 Safety/Preston Continued page 20 especially tough events require tight maneuvering quick landings feel Blue Max superior almost event has ever flown inun til gets windy wind starts blow heavier 60-size planes have definite advantage scaled-up 60 ver sion plane might future proj ect cure problem am sure will disappointed Blue Max II Anyone has ever flown has fallen love its fly ing characteristics Have fun Fun/Winter Continued page 33 weight etc have long run-time overall duration probably will greater highest altitude will reached fly less think best-rateof-climb angle assumes means less dead weight hang prop due climb better duration plane merely device keep power system off ground until energy consumed think true Rubber Scale Indoor models applies everywhere concern have power burn tank full gas dont have power burn small-engined powered Sailplane Electric Gas angle climb frustratingly shallow very long run gets plane up launch height easily Sailplane stalls such shallow angle tiny prop just soon puttoo much dead weightupon hanging li-in drill sure throws chips disk area prop comes mind does 1/16-in drill air blast 12- 13-in folder times greater screaming 6-4 tiny prop stalls hold same nose-up steadily can dethermalize way groundat full throttle Textbook experts frothing know mans meat anothers poison John Worth AMA executive director now has LeCrate insists trying possible approach no matter unlikely Hes flying poor thing death though seems worse wear Gordon Burford Australia gave him l0-in-dia Pylon prop Yes Pylon pitch unknown Its strange club prop blades squared off outside hub lots blade area high pitch near hub almost flat near tips Thin blades sharp edges would pay dime Electrics John added 3 mm best time itand six 12 Ah cells insted seven just 2-to-i reduction switched 800 mAb cells Duration virtually same around 13 minutes could get pinpoint height once flight used speed controller could regain height second time 800s John gets pin point height second time same flight using controller extended cruise shallow climb Evans Wing modification Bill Evans modification own Simitar Deuce extremely happy airplane six flights Don Srull testing fiddling sticks along way find wing have few special traits trail-dragger ship starts roll full up hold full up way until 5 6 ft high runs along snappily two-thirds throttle steering rudder find best Using aileron trim soaring circles engine idling dead eventually model beings wind down occasional stick needed have 2A dihedral tip 5-ft wing trim circle rudder alone maintains altitude add touch inside aileron another rudder aileron rudder end up almost flat tight hands-off circles pushed extreme crossed controls eventually see what looks like rudder reversal comes out circle no needs turn dime still-lower vertical tail perhaps dorsal fin would cure truly no need speed range wide ship obviously highly efficient lightened structure electric power would make absolute world-beater grossly overpowered 19 should 120Model Aviation Blue Max/Allen Continued page 117 Great Lakes Model Company 517876-7825 100 Michigan Ave AuGres MI 48703 Send SASE flincher Deuler Inquiries Welcome List Price $28500 Factory Direct $22800 Michiganresidontsadd4%salestax VINTASI R-C PLAN CONSOLIDATED PlY-BA CATALINA 9FT WINGSPAN ALL RIASS FULL FORMERS SHOWN ON PLANS11 PLASTIC ENGCOWLS PR CLEAR GUN BLiSTERS $660 PR 4 LARGE PLAN SHEETS Plans $1695 GFT WING SPAN MODEL PSY-SA ENGINE COWLS $ 650 PR Plans $1295 GUN fiLISTERS $ 430 PR ADD S2O POSTAGE CATALOGOVER 50 PLANS tiDo DEALERS WRITE WORLD 0 WWE SID MORGAN 13157 ORMONDBELLEVILLE MICH48111 USA AT-6 SNJ-HARVARD 63375 Wingspan ngine s Complete
Edition: Model Aviation - 1985/02
Page Numbers: 22, 23, 24, 25, 26, 27, 28, 29, 117, 120
NO OCR TEXT NO OCR TEXT completed uncovered model Thisylew plus plansand cutawaydrawing should make everything cleat Among 40-size engines used have K&B HP 05 Nose gear installation deta picture DuBrosteering arm us ed Engine mounting simple used Blue Max prototypes have powered K&B 40 HP 40 OS 40 engines have worked well HP OS seemed give better vertical performance Before go construction plane let say highperformance talk does mean Blue Max hard fly contrary plane very easy fly would hesitate recommend flier very little time flying aileron trainer thing would have keep control throws far maximum have never able find single bad trait Blue Max proto types have five including shown pictures 24Model Aviation build Blue Max much fun can have h can fun-fly events right plane Construction First make yoi Cut out major parts start gluing building pro go much easier Left Aileron installation author uses ball link connectors Top Right Take off hatch back what servos rudder elevator Above Right wing removed fuel tank battery throttle Left Tail surfaces stralgnuorwara simple Adjust control throws according text start wnn tnei ever setting feels comfortable Right dont need cut lightening holes wing ribs WN N FiT -CIIP OFF N T14E AV/k-I S WUT FAWCVS IM 51 - -WAZELS 4TI- CUB -CHUCI OFF IN CHINA! -ME-IMIN sI-IW III / FLY 1/16 CAP STRIPS OPND BOTTOM 6 I/32LITE PLY DCIJBLER UPTO NOSE REIN F jLOCK SERVO ROD TO NOSE WHEEL 7I/4XI/2LEFIN T E POST AND FIN MOUNT 1/4 SHEET TAPERED RUDDER 3/16 X 1/4 SPRUCE LE AND SPAR I/32LITE PLY AFT DOUBLER 3/16 SPRUCE ELEV JOINER 3/16 SHEET ELEVATcRS 1/4 SHEET VENTRAL WITH I/16SKID I/B SHEEr BALSA SIDES I/4 FRAMES 1/8 SHEET BALSA lOP/BOTTOM CRCSGRAIN I/B LITE-PLY SPAR _____________ REINFORCING C/S ONLY I/B LITE PLY RIB REINF OVER 1/4 DOWEL HOLD DOWNN 1/4 DOWEL INTO I/B PLYWDOD BLOCK I/BBALSA HATCH TRIANGLE STOCK 1/4 PLY FIREWALL KM 40 MOUNT DU BRO STEER ARM 2 WHEEL ON 3/16 3/16 STEERABLE NOSE GEAR 7 / / / 2 I/2WHEELS ON DUBRO /AXLES 1/16 PLYWOOD10 32 LE JOINERNYLON BOLTS SIG SKYBOLT L GEAR ON I/8FLY MOUNT THRU V2SOSPRUCE I/16LITE SHEET ALLLEAND CS 3/16 X 1/4 SPRUCE SPARS 7 I/8LITEpLY HAICH IIA I/B SHEET WEBS 1/850 SPRUCE L E 1/32 PLYDO FUSELA3E DOUBLER I/16x TE SHEET TOP AND BOTTOM 1/4 X 3/8 AILERON SPAR 3/8x 11/2 AILERO~J 7 7 1/32 PLY TIP PLATES 3/32Th1B5 ALL SAME SHAPE Left left wing panel under construction Note marks top ribs right panel should built same place atop plans rib marking bottom Right Left rightwlng panels assembled center rib Has unique construction Left Assembled wing balsa sheeting ready glued leading edge wrapped around top bottom piece Right sheeting has installed right wing panel hasnt yet trimmed center rib Photos author ribs can made either two ways first make stack blank balsa pieces cut ribs same time jigsaw band saw second method make rib template plywood metal cut out rib separately leaving little extra around edges stack ribs pin together can sanded final shape After ribs cut out sanded use felt-tip pen mark top side ribs still stacked done make sure airfoil same along wing though airfoil supposed symmetrical its very hard make perfect ribs side usually little different other lightening holes optional cut out because look good under transparent MonoKote rest parts should cut out match plans Wing Construction little different sport planes build Start pinning down bottom trailing edge TE sheet over left-hand portion plans shape 3/ x / TE piece match taper back ribs glue top sheet already pinned down Next put piece /16 scrap plans 2 in front TE sheet support front ribs sit properly Now glue %2 ribs half wing keeping square work sur face must sure ribs glued down marked side up Add sq spruce leading edge LE strip top bottom Y16 x / spruce spars sure leave little extra length center can later cut exact length needed perfect fit center rib right panel dry panel can re moved plan right panel can built over same area difference right panel should assembled marked side ribs down Glue balsa shear webs both panels center rib should now construct ed first gluing Lite Ply doublers both sides sure grain direction shown plans Cut center 26Model Aviation XII ietropfliestfle aL rna I-un ny VUI1I5 wiui EIIUUUUO IJfl Max series its best performance winds light-to-medluim 1/8 LITE PLY1/4 DOWEL1/8 SO SPRUCELEADING EDGE SHEETING IS ONE -I/IS LIGHT BALSACG RANGE 3/3D BALSA EDGE DREETING _______________OPTIONALI/IR 3/B BALSA CAPSYRIPS I/4 3/B BALSABALSA AILERON1/4 BALSA TRAILING EDGE 1/83/18 ALGA TIP PLATES LAMINATEDPLYWOOD2ITYPICAL WING RIB FROM I/3D PLYWLOD AND 1/16 BALSA-PLY TOWARDS THE INSIDESPAR JOINER ENTER RIBTYPICAL CENTER RIBI/43/IB DWBLERSPRUCE 1/32 PLYWOOD DOUBLERS WING TIP PLATE7 FUSELAGE OUBLER 3/IRI/4ELEVATOR 1/4 BALSA SHEET 1/4 BALSA________________ I/O TRI S OUTLINE OF STOCKFUSELAGE SIDES SIDE NOT SHOWN FIN INCIDENCE1/B BALSA SHEETFOR CLARITY OR OS-SI OSITIVESIDES TOPABOTTOM [v32][b-1-10-1-10]]ItBEVEL V/i 7XIIl/Al ON RAFTL/-1Il//Il DL 4 TANK- - 1/32 PLYI IyyAIl//Il RECEIVER -DOUBLERR(JDDR CO RANGEI/O TRI-STOCI LEVATOR AND RUDDER rII lii F4 THROTTLE ERVO AREAISPRUCE -2BATTERY AREAAREA O CIS M-40IF-IEND OFDOUBLER __CU MOUNTI/DSG SPRUCE WITH I/BPLYWOODSIDETOP AND BOTTOM _F2 TAPPED HOLES GEAR MOUNT FUSELAGESHEETING IS CROSS-- STEERINGVIEW ARM 4S35S0 0/IS NOSE GEAR FON COMPlUSE 010 SKYBOLT GEARDESIRES SHAPE OF SKYBOLTMA GABA GA SPORT F LY INS CON SIMILAR MOUNTED 5/52 IWITH 10-32 NYLON BOLTS MODEL AV ATION I/B LITE PLYSKYBOLT GEAR 2 WHEEL j 2-1/4 WHEELS ONORIGINAL SHAPE BANNER OR OD-BROIIDES GNED BY 3 M ALLEN JR AXLES0 2 ELAGE HATCH LANDING GEAR PATTERNRAC NG BY JOE DEMARCO 5____________________________ BKTS RESERVED FULL-SIZE PLANS AVAILABLESEE PAGE 164 rib shown dotted lines plan A-in-wide section cut out clear / ply spar joiner Glue center rib back together spar joiner place section cut out LE joiner should slid slot front center rib glued place assembly shown photos wing halves now glued together center rib Start test-fitting three pieces together cutting spars LE necessary over plan make sure sweepback set proper angle satisfied fit line up wing over plan prop up level Measure distance center LE table same thing TE wing should set up measurements same both right left panel glue together center rib Sheet leading edge done side time Start edge-gluing three /16 x 3 x 36 sheets together edgewise making sheet 9 36 Two sheets size required side Get bowl hot water small sponge wet outside sheets Wipe hot water center third sheet lengthwise let soak few minutes sheet soaking spread glue structure front spar sheet will stick thick cyanoacrylate CyA glues should used operation Stand wing up TE locate center sheet wet side out over LE Roll sheeting down onto both top bottom same time rub don glue can set dry trim excess sheet off around edges center rib other half wing done same manner trimmed center rib putting sheeting After both halves sheeted check warps arent great no problem sheeting warped side must split placing straightedge bottom sheeting cutting along center tip razor blade X-Acto knife twist wing straight reglue sheeting cut Use regular CyA glue process will easily remove twists panels providing cap strips center sheeting have installed top center sheeting cap strips now added Flip wing over bottom facing cut center rib clear aileron servo Add spruce servo rails shown pictures Scraps wing spar wood good purpose Glue bottom center sheeting cap strips cut hole aileron servo sheeting next step install aileron horns center TE pieces suggest using Du-Bro similar aileron horns Make TE pieces out sheet balsa x 1 TE stock can find size trailing edge stock can make things much easier Groove front pieces clear aileron horns glue place over horns careful get glue wire will bind up link age Make ailerons either sheet balsa x 1% TE stock Add A2 ply wing bolt doublers top bottom shown plan tips now made laminating A2 ply /16 balsa should glued until wing tips have covered glued plywood facing inside Fuselage Start gluing A2 ply dou blers front rear sure make right left side Make formers sticks shown plan F-2 should cut out shown dotted lines plan depending what tank intend use tank Kraft Slimline 4 oz what use dont need cut former Please note top piece F-2 made sq spruce helps support Left Bottom view wing center section after leading edge center sheeting have added Note servo cutout cen ter rib rails have added Right Center section now compiete hoie servo aileron horns installed Left Fuselage doublers being glued place Note marks behind doublersto avoid building two side Right ship has doublers rear weilwhich author notes very important ldeaily Blue Max II should come out weighing about 3 lb 28Model Aviation center rib aasemiy nas completed sparand leading edge joiners have glued piace have doublers loads wing mount side laying flat table doublers up glue Formers F-2 F-3 place using triangle make sure square Glue other side top two formers Drill firewall engine mount fuel lines pushrods Glue firewall front glue A-in triangle stock behind Place assembly over top view plan pin down Pull rear fuselage together glue sure straight Glue Former F-4 ply landing gear mounting plate should glued bottom x spruce glued top should now glue Lite Ply hatch frame Put bottom cross-grain sheeting A-in triangle around gear mount shown plan Drill tap landing gear mount 10-32 nylon bolts planes have used Sig Skybolt landing gearrebent desired shape front view proper shape shown plan dotted lines shown shape Skybolt gear buy am sure aluminum landing gears will work fine particular gear inexpensive readily available Place hatch position glue balsa fillers both sides Drill hatch mount wood screws outer Ny-rod tubes rudder Continued page 117 February 198529 Left Glue formers TO 0fl sloe using triangle make sure theyre square dry glue amer sloe picture Right firewall complete blind mounting nuts glued place balsa triangle stock added corners strength ii Left Dowel wing through /a plywood plate holds wing front securely Install plywood plate wing place good fit Right 1/4 plywood rear mounting plate being installed wax paper between wing bottom fuselage eft landing gear installed 10-32 nylon bolts Author uses Sig Skybolt landing gear reshaped per plans Right Jote vertical fin post embedded rear fuselage post greatly strengthens fin Installation ltS sturdy model times control rudder flyaways common Todays models neutral stability superior aerobatic performance generally bite dust seconds after loss radio signal As Sam pointed out devices cur rently market will retard throttle event interference loss transmitter signalbut require power on-board battery pack order function readers have simple solution close engine throttle upon loss power onboard battery pack please drop line Meanwhile please make sure airborne battery packs wont ejected takeoff could result just embaTrassment Have safe month John Preston 12235 Tilden wood Dr Rockville MD 20852 Blue Max/Allen Continued page 29 elevator should glued now Remem ber have come up hatch area Make sure exit fuse lage sides far enough forward interfere rudder post Mount completed wing fuse lage. First open hole dowel will go center rib test-fit dowel glue Line up wing fuselage make sure centered square dowel temporarily place slide ply wing mount place dowel glue front F-2 move wing until glue dry triangle stock can now added front wing mount wing still place slide piece wax paper between wing TE fuselage rear mounting plate glued Use 5-mm epoxy glue ply plate place under wing Hold firmly against bottom wing until glue has set Remove wax paper double check make sure wing straight Now drill down through wing doublers through mounting plate Drill out hole wing /I6 tap hole plate 10-32 bolt Add baisa top block fuselage front wing top rear balsa crossgrain sheeting Tall surfaces Build over plan shown sure use spruce leap ing trailing edges stab Cut tle hole top fuselage sheeting clear x rudder post leave part out adds great deal strength installed fin Glue stab bottom fuse lage making sure properly aligned Glue fin sub-fin place Sand rudder tapered shape suggest cut out lightening holes shown plan tail Blue Max quite long everything rear should kept light possible Finishing touches Final-sand everything cover plane ironon covering materials strongly recom mend MonoKote its strength ease application also make hinges Out same material have never failure Install engine mount nose gear nose gear goes up through mount steering arm just below mount wheel collar either inside top mount hold gear place know someone coil bender strongly recommend use Y6-in wire nose gear heavyduty struts save lot props case bender available %2-in gear will work just fine Install tank run fuel lines through center mount Mount engine 6-32 bolts out mount far enough leave room fuel lines come through Mount rudder elevator servos back under hatch Make sure far enough rearward allow receiver placed just ahead Use cable pushrod go rudder servo nose gear cable housing should firmly glued down over its en tire length prevent flexing throttle servo mounted aileron ser vo tray just ahead F-3 flat floor cable pushrod should used throttle also Battery location fuselage depends needed balancing purposes normally under wing right behind tank aileron servo mounted wing rails installed earlier Use sheet metal screws attaching servo con ventional manner CG should fall somewhere between limits shown plan best way check CG place fingers under spars both sides wing slide fingers out equally both sides limits method shown wing plan Desired control throws starting ailerons Y6 up down elevator own rudder 1A left right throws will give easy-to-fly responsive airplane After some test flights throws can adjusted whatever flier feels comfortable first flight open throttle holding slight back pressure elevator will lift off ground about 30 40 feet Let clImb out can get feel way flies its up Blue Max very versatile airplane Continued page 120 February 1 98511 7 Safety/Preston Continued page 20 especially tough events require tight maneuvering quick landings feel Blue Max superior almost event has ever flown inun til gets windy wind starts blow heavier 60-size planes have definite advantage scaled-up 60 ver sion plane might future proj ect cure problem am sure will disappointed Blue Max II Anyone has ever flown has fallen love its fly ing characteristics Have fun Fun/Winter Continued page 33 weight etc have long run-time overall duration probably will greater highest altitude will reached fly less think best-rateof-climb angle assumes means less dead weight hang prop due climb better duration plane merely device keep power system off ground until energy consumed think true Rubber Scale Indoor models applies everywhere concern have power burn tank full gas dont have power burn small-engined powered Sailplane Electric Gas angle climb frustratingly shallow very long run gets plane up launch height easily Sailplane stalls such shallow angle tiny prop just soon puttoo much dead weightupon hanging li-in drill sure throws chips disk area prop comes mind does 1/16-in drill air blast 12- 13-in folder times greater screaming 6-4 tiny prop stalls hold same nose-up steadily can dethermalize way groundat full throttle Textbook experts frothing know mans meat anothers poison John Worth AMA executive director now has LeCrate insists trying possible approach no matter unlikely Hes flying poor thing death though seems worse wear Gordon Burford Australia gave him l0-in-dia Pylon prop Yes Pylon pitch unknown Its strange club prop blades squared off outside hub lots blade area high pitch near hub almost flat near tips Thin blades sharp edges would pay dime Electrics John added 3 mm best time itand six 12 Ah cells insted seven just 2-to-i reduction switched 800 mAb cells Duration virtually same around 13 minutes could get pinpoint height once flight used speed controller could regain height second time 800s John gets pin point height second time same flight using controller extended cruise shallow climb Evans Wing modification Bill Evans modification own Simitar Deuce extremely happy airplane six flights Don Srull testing fiddling sticks along way find wing have few special traits trail-dragger ship starts roll full up hold full up way until 5 6 ft high runs along snappily two-thirds throttle steering rudder find best Using aileron trim soaring circles engine idling dead eventually model beings wind down occasional stick needed have 2A dihedral tip 5-ft wing trim circle rudder alone maintains altitude add touch inside aileron another rudder aileron rudder end up almost flat tight hands-off circles pushed extreme crossed controls eventually see what looks like rudder reversal comes out circle no needs turn dime still-lower vertical tail perhaps dorsal fin would cure truly no need speed range wide ship obviously highly efficient lightened structure electric power would make absolute world-beater grossly overpowered 19 should 120Model Aviation Blue Max/Allen Continued page 117 Great Lakes Model Company 517876-7825 100 Michigan Ave AuGres MI 48703 Send SASE flincher Deuler Inquiries Welcome List Price $28500 Factory Direct $22800 Michiganresidontsadd4%salestax VINTASI R-C PLAN CONSOLIDATED PlY-BA CATALINA 9FT WINGSPAN ALL RIASS FULL FORMERS SHOWN ON PLANS11 PLASTIC ENGCOWLS PR CLEAR GUN BLiSTERS $660 PR 4 LARGE PLAN SHEETS Plans $1695 GFT WING SPAN MODEL PSY-SA ENGINE COWLS $ 650 PR Plans $1295 GUN fiLISTERS $ 430 PR ADD S2O POSTAGE CATALOGOVER 50 PLANS tiDo DEALERS WRITE WORLD 0 WWE SID MORGAN 13157 ORMONDBELLEVILLE MICH48111 USA AT-6 SNJ-HARVARD 63375 Wingspan ngine s Complete
Edition: Model Aviation - 1985/02
Page Numbers: 22, 23, 24, 25, 26, 27, 28, 29, 117, 120
NO OCR TEXT NO OCR TEXT completed uncovered model Thisylew plus plansand cutawaydrawing should make everything cleat Among 40-size engines used have K&B HP 05 Nose gear installation deta picture DuBrosteering arm us ed Engine mounting simple used Blue Max prototypes have powered K&B 40 HP 40 OS 40 engines have worked well HP OS seemed give better vertical performance Before go construction plane let say highperformance talk does mean Blue Max hard fly contrary plane very easy fly would hesitate recommend flier very little time flying aileron trainer thing would have keep control throws far maximum have never able find single bad trait Blue Max proto types have five including shown pictures 24Model Aviation build Blue Max much fun can have h can fun-fly events right plane Construction First make yoi Cut out major parts start gluing building pro go much easier Left Aileron installation author uses ball link connectors Top Right Take off hatch back what servos rudder elevator Above Right wing removed fuel tank battery throttle Left Tail surfaces stralgnuorwara simple Adjust control throws according text start wnn tnei ever setting feels comfortable Right dont need cut lightening holes wing ribs WN N FiT -CIIP OFF N T14E AV/k-I S WUT FAWCVS IM 51 - -WAZELS 4TI- CUB -CHUCI OFF IN CHINA! -ME-IMIN sI-IW III / FLY 1/16 CAP STRIPS OPND BOTTOM 6 I/32LITE PLY DCIJBLER UPTO NOSE REIN F jLOCK SERVO ROD TO NOSE WHEEL 7I/4XI/2LEFIN T E POST AND FIN MOUNT 1/4 SHEET TAPERED RUDDER 3/16 X 1/4 SPRUCE LE AND SPAR I/32LITE PLY AFT DOUBLER 3/16 SPRUCE ELEV JOINER 3/16 SHEET ELEVATcRS 1/4 SHEET VENTRAL WITH I/16SKID I/B SHEEr BALSA SIDES I/4 FRAMES 1/8 SHEET BALSA lOP/BOTTOM CRCSGRAIN I/B LITE-PLY SPAR _____________ REINFORCING C/S ONLY I/B LITE PLY RIB REINF OVER 1/4 DOWEL HOLD DOWNN 1/4 DOWEL INTO I/B PLYWDOD BLOCK I/BBALSA HATCH TRIANGLE STOCK 1/4 PLY FIREWALL KM 40 MOUNT DU BRO STEER ARM 2 WHEEL ON 3/16 3/16 STEERABLE NOSE GEAR 7 / / / 2 I/2WHEELS ON DUBRO /AXLES 1/16 PLYWOOD10 32 LE JOINERNYLON BOLTS SIG SKYBOLT L GEAR ON I/8FLY MOUNT THRU V2SOSPRUCE I/16LITE SHEET ALLLEAND CS 3/16 X 1/4 SPRUCE SPARS 7 I/8LITEpLY HAICH IIA I/B SHEET WEBS 1/850 SPRUCE L E 1/32 PLYDO FUSELA3E DOUBLER I/16x TE SHEET TOP AND BOTTOM 1/4 X 3/8 AILERON SPAR 3/8x 11/2 AILERO~J 7 7 1/32 PLY TIP PLATES 3/32Th1B5 ALL SAME SHAPE Left left wing panel under construction Note marks top ribs right panel should built same place atop plans rib marking bottom Right Left rightwlng panels assembled center rib Has unique construction Left Assembled wing balsa sheeting ready glued leading edge wrapped around top bottom piece Right sheeting has installed right wing panel hasnt yet trimmed center rib Photos author ribs can made either two ways first make stack blank balsa pieces cut ribs same time jigsaw band saw second method make rib template plywood metal cut out rib separately leaving little extra around edges stack ribs pin together can sanded final shape After ribs cut out sanded use felt-tip pen mark top side ribs still stacked done make sure airfoil same along wing though airfoil supposed symmetrical its very hard make perfect ribs side usually little different other lightening holes optional cut out because look good under transparent MonoKote rest parts should cut out match plans Wing Construction little different sport planes build Start pinning down bottom trailing edge TE sheet over left-hand portion plans shape 3/ x / TE piece match taper back ribs glue top sheet already pinned down Next put piece /16 scrap plans 2 in front TE sheet support front ribs sit properly Now glue %2 ribs half wing keeping square work sur face must sure ribs glued down marked side up Add sq spruce leading edge LE strip top bottom Y16 x / spruce spars sure leave little extra length center can later cut exact length needed perfect fit center rib right panel dry panel can re moved plan right panel can built over same area difference right panel should assembled marked side ribs down Glue balsa shear webs both panels center rib should now construct ed first gluing Lite Ply doublers both sides sure grain direction shown plans Cut center 26Model Aviation XII ietropfliestfle aL rna I-un ny VUI1I5 wiui EIIUUUUO IJfl Max series its best performance winds light-to-medluim 1/8 LITE PLY1/4 DOWEL1/8 SO SPRUCELEADING EDGE SHEETING IS ONE -I/IS LIGHT BALSACG RANGE 3/3D BALSA EDGE DREETING _______________OPTIONALI/IR 3/B BALSA CAPSYRIPS I/4 3/B BALSABALSA AILERON1/4 BALSA TRAILING EDGE 1/83/18 ALGA TIP PLATES LAMINATEDPLYWOOD2ITYPICAL WING RIB FROM I/3D PLYWLOD AND 1/16 BALSA-PLY TOWARDS THE INSIDESPAR JOINER ENTER RIBTYPICAL CENTER RIBI/43/IB DWBLERSPRUCE 1/32 PLYWOOD DOUBLERS WING TIP PLATE7 FUSELAGE OUBLER 3/IRI/4ELEVATOR 1/4 BALSA SHEET 1/4 BALSA________________ I/O TRI S OUTLINE OF STOCKFUSELAGE SIDES SIDE NOT SHOWN FIN INCIDENCE1/B BALSA SHEETFOR CLARITY OR OS-SI OSITIVESIDES TOPABOTTOM [v32][b-1-10-1-10]]ItBEVEL V/i 7XIIl/Al ON RAFTL/-1Il//Il DL 4 TANK- - 1/32 PLYI IyyAIl//Il RECEIVER -DOUBLERR(JDDR CO RANGEI/O TRI-STOCI LEVATOR AND RUDDER rII lii F4 THROTTLE ERVO AREAISPRUCE -2BATTERY AREAAREA O CIS M-40IF-IEND OFDOUBLER __CU MOUNTI/DSG SPRUCE WITH I/BPLYWOODSIDETOP AND BOTTOM _F2 TAPPED HOLES GEAR MOUNT FUSELAGESHEETING IS CROSS-- STEERINGVIEW ARM 4S35S0 0/IS NOSE GEAR FON COMPlUSE 010 SKYBOLT GEARDESIRES SHAPE OF SKYBOLTMA GABA GA SPORT F LY INS CON SIMILAR MOUNTED 5/52 IWITH 10-32 NYLON BOLTS MODEL AV ATION I/B LITE PLYSKYBOLT GEAR 2 WHEEL j 2-1/4 WHEELS ONORIGINAL SHAPE BANNER OR OD-BROIIDES GNED BY 3 M ALLEN JR AXLES0 2 ELAGE HATCH LANDING GEAR PATTERNRAC NG BY JOE DEMARCO 5____________________________ BKTS RESERVED FULL-SIZE PLANS AVAILABLESEE PAGE 164 rib shown dotted lines plan A-in-wide section cut out clear / ply spar joiner Glue center rib back together spar joiner place section cut out LE joiner should slid slot front center rib glued place assembly shown photos wing halves now glued together center rib Start test-fitting three pieces together cutting spars LE necessary over plan make sure sweepback set proper angle satisfied fit line up wing over plan prop up level Measure distance center LE table same thing TE wing should set up measurements same both right left panel glue together center rib Sheet leading edge done side time Start edge-gluing three /16 x 3 x 36 sheets together edgewise making sheet 9 36 Two sheets size required side Get bowl hot water small sponge wet outside sheets Wipe hot water center third sheet lengthwise let soak few minutes sheet soaking spread glue structure front spar sheet will stick thick cyanoacrylate CyA glues should used operation Stand wing up TE locate center sheet wet side out over LE Roll sheeting down onto both top bottom same time rub don glue can set dry trim excess sheet off around edges center rib other half wing done same manner trimmed center rib putting sheeting After both halves sheeted check warps arent great no problem sheeting warped side must split placing straightedge bottom sheeting cutting along center tip razor blade X-Acto knife twist wing straight reglue sheeting cut Use regular CyA glue process will easily remove twists panels providing cap strips center sheeting have installed top center sheeting cap strips now added Flip wing over bottom facing cut center rib clear aileron servo Add spruce servo rails shown pictures Scraps wing spar wood good purpose Glue bottom center sheeting cap strips cut hole aileron servo sheeting next step install aileron horns center TE pieces suggest using Du-Bro similar aileron horns Make TE pieces out sheet balsa x 1 TE stock can find size trailing edge stock can make things much easier Groove front pieces clear aileron horns glue place over horns careful get glue wire will bind up link age Make ailerons either sheet balsa x 1% TE stock Add A2 ply wing bolt doublers top bottom shown plan tips now made laminating A2 ply /16 balsa should glued until wing tips have covered glued plywood facing inside Fuselage Start gluing A2 ply dou blers front rear sure make right left side Make formers sticks shown plan F-2 should cut out shown dotted lines plan depending what tank intend use tank Kraft Slimline 4 oz what use dont need cut former Please note top piece F-2 made sq spruce helps support Left Bottom view wing center section after leading edge center sheeting have added Note servo cutout cen ter rib rails have added Right Center section now compiete hoie servo aileron horns installed Left Fuselage doublers being glued place Note marks behind doublersto avoid building two side Right ship has doublers rear weilwhich author notes very important ldeaily Blue Max II should come out weighing about 3 lb 28Model Aviation center rib aasemiy nas completed sparand leading edge joiners have glued piace have doublers loads wing mount side laying flat table doublers up glue Formers F-2 F-3 place using triangle make sure square Glue other side top two formers Drill firewall engine mount fuel lines pushrods Glue firewall front glue A-in triangle stock behind Place assembly over top view plan pin down Pull rear fuselage together glue sure straight Glue Former F-4 ply landing gear mounting plate should glued bottom x spruce glued top should now glue Lite Ply hatch frame Put bottom cross-grain sheeting A-in triangle around gear mount shown plan Drill tap landing gear mount 10-32 nylon bolts planes have used Sig Skybolt landing gearrebent desired shape front view proper shape shown plan dotted lines shown shape Skybolt gear buy am sure aluminum landing gears will work fine particular gear inexpensive readily available Place hatch position glue balsa fillers both sides Drill hatch mount wood screws outer Ny-rod tubes rudder Continued page 117 February 198529 Left Glue formers TO 0fl sloe using triangle make sure theyre square dry glue amer sloe picture Right firewall complete blind mounting nuts glued place balsa triangle stock added corners strength ii Left Dowel wing through /a plywood plate holds wing front securely Install plywood plate wing place good fit Right 1/4 plywood rear mounting plate being installed wax paper between wing bottom fuselage eft landing gear installed 10-32 nylon bolts Author uses Sig Skybolt landing gear reshaped per plans Right Jote vertical fin post embedded rear fuselage post greatly strengthens fin Installation ltS sturdy model times control rudder flyaways common Todays models neutral stability superior aerobatic performance generally bite dust seconds after loss radio signal As Sam pointed out devices cur rently market will retard throttle event interference loss transmitter signalbut require power on-board battery pack order function readers have simple solution close engine throttle upon loss power onboard battery pack please drop line Meanwhile please make sure airborne battery packs wont ejected takeoff could result just embaTrassment Have safe month John Preston 12235 Tilden wood Dr Rockville MD 20852 Blue Max/Allen Continued page 29 elevator should glued now Remem ber have come up hatch area Make sure exit fuse lage sides far enough forward interfere rudder post Mount completed wing fuse lage. First open hole dowel will go center rib test-fit dowel glue Line up wing fuselage make sure centered square dowel temporarily place slide ply wing mount place dowel glue front F-2 move wing until glue dry triangle stock can now added front wing mount wing still place slide piece wax paper between wing TE fuselage rear mounting plate glued Use 5-mm epoxy glue ply plate place under wing Hold firmly against bottom wing until glue has set Remove wax paper double check make sure wing straight Now drill down through wing doublers through mounting plate Drill out hole wing /I6 tap hole plate 10-32 bolt Add baisa top block fuselage front wing top rear balsa crossgrain sheeting Tall surfaces Build over plan shown sure use spruce leap ing trailing edges stab Cut tle hole top fuselage sheeting clear x rudder post leave part out adds great deal strength installed fin Glue stab bottom fuse lage making sure properly aligned Glue fin sub-fin place Sand rudder tapered shape suggest cut out lightening holes shown plan tail Blue Max quite long everything rear should kept light possible Finishing touches Final-sand everything cover plane ironon covering materials strongly recom mend MonoKote its strength ease application also make hinges Out same material have never failure Install engine mount nose gear nose gear goes up through mount steering arm just below mount wheel collar either inside top mount hold gear place know someone coil bender strongly recommend use Y6-in wire nose gear heavyduty struts save lot props case bender available %2-in gear will work just fine Install tank run fuel lines through center mount Mount engine 6-32 bolts out mount far enough leave room fuel lines come through Mount rudder elevator servos back under hatch Make sure far enough rearward allow receiver placed just ahead Use cable pushrod go rudder servo nose gear cable housing should firmly glued down over its en tire length prevent flexing throttle servo mounted aileron ser vo tray just ahead F-3 flat floor cable pushrod should used throttle also Battery location fuselage depends needed balancing purposes normally under wing right behind tank aileron servo mounted wing rails installed earlier Use sheet metal screws attaching servo con ventional manner CG should fall somewhere between limits shown plan best way check CG place fingers under spars both sides wing slide fingers out equally both sides limits method shown wing plan Desired control throws starting ailerons Y6 up down elevator own rudder 1A left right throws will give easy-to-fly responsive airplane After some test flights throws can adjusted whatever flier feels comfortable first flight open throttle holding slight back pressure elevator will lift off ground about 30 40 feet Let clImb out can get feel way flies its up Blue Max very versatile airplane Continued page 120 February 1 98511 7 Safety/Preston Continued page 20 especially tough events require tight maneuvering quick landings feel Blue Max superior almost event has ever flown inun til gets windy wind starts blow heavier 60-size planes have definite advantage scaled-up 60 ver sion plane might future proj ect cure problem am sure will disappointed Blue Max II Anyone has ever flown has fallen love its fly ing characteristics Have fun Fun/Winter Continued page 33 weight etc have long run-time overall duration probably will greater highest altitude will reached fly less think best-rateof-climb angle assumes means less dead weight hang prop due climb better duration plane merely device keep power system off ground until energy consumed think true Rubber Scale Indoor models applies everywhere concern have power burn tank full gas dont have power burn small-engined powered Sailplane Electric Gas angle climb frustratingly shallow very long run gets plane up launch height easily Sailplane stalls such shallow angle tiny prop just soon puttoo much dead weightupon hanging li-in drill sure throws chips disk area prop comes mind does 1/16-in drill air blast 12- 13-in folder times greater screaming 6-4 tiny prop stalls hold same nose-up steadily can dethermalize way groundat full throttle Textbook experts frothing know mans meat anothers poison John Worth AMA executive director now has LeCrate insists trying possible approach no matter unlikely Hes flying poor thing death though seems worse wear Gordon Burford Australia gave him l0-in-dia Pylon prop Yes Pylon pitch unknown Its strange club prop blades squared off outside hub lots blade area high pitch near hub almost flat near tips Thin blades sharp edges would pay dime Electrics John added 3 mm best time itand six 12 Ah cells insted seven just 2-to-i reduction switched 800 mAb cells Duration virtually same around 13 minutes could get pinpoint height once flight used speed controller could regain height second time 800s John gets pin point height second time same flight using controller extended cruise shallow climb Evans Wing modification Bill Evans modification own Simitar Deuce extremely happy airplane six flights Don Srull testing fiddling sticks along way find wing have few special traits trail-dragger ship starts roll full up hold full up way until 5 6 ft high runs along snappily two-thirds throttle steering rudder find best Using aileron trim soaring circles engine idling dead eventually model beings wind down occasional stick needed have 2A dihedral tip 5-ft wing trim circle rudder alone maintains altitude add touch inside aileron another rudder aileron rudder end up almost flat tight hands-off circles pushed extreme crossed controls eventually see what looks like rudder reversal comes out circle no needs turn dime still-lower vertical tail perhaps dorsal fin would cure truly no need speed range wide ship obviously highly efficient lightened structure electric power would make absolute world-beater grossly overpowered 19 should 120Model Aviation Blue Max/Allen Continued page 117 Great Lakes Model Company 517876-7825 100 Michigan Ave AuGres MI 48703 Send SASE flincher Deuler Inquiries Welcome List Price $28500 Factory Direct $22800 Michiganresidontsadd4%salestax VINTASI R-C PLAN CONSOLIDATED PlY-BA CATALINA 9FT WINGSPAN ALL RIASS FULL FORMERS SHOWN ON PLANS11 PLASTIC ENGCOWLS PR CLEAR GUN BLiSTERS $660 PR 4 LARGE PLAN SHEETS Plans $1695 GFT WING SPAN MODEL PSY-SA ENGINE COWLS $ 650 PR Plans $1295 GUN fiLISTERS $ 430 PR ADD S2O POSTAGE CATALOGOVER 50 PLANS tiDo DEALERS WRITE WORLD 0 WWE SID MORGAN 13157 ORMONDBELLEVILLE MICH48111 USA AT-6 SNJ-HARVARD 63375 Wingspan ngine s Complete
Edition: Model Aviation - 1985/02
Page Numbers: 22, 23, 24, 25, 26, 27, 28, 29, 117, 120
NO OCR TEXT NO OCR TEXT completed uncovered model Thisylew plus plansand cutawaydrawing should make everything cleat Among 40-size engines used have K&B HP 05 Nose gear installation deta picture DuBrosteering arm us ed Engine mounting simple used Blue Max prototypes have powered K&B 40 HP 40 OS 40 engines have worked well HP OS seemed give better vertical performance Before go construction plane let say highperformance talk does mean Blue Max hard fly contrary plane very easy fly would hesitate recommend flier very little time flying aileron trainer thing would have keep control throws far maximum have never able find single bad trait Blue Max proto types have five including shown pictures 24Model Aviation build Blue Max much fun can have h can fun-fly events right plane Construction First make yoi Cut out major parts start gluing building pro go much easier Left Aileron installation author uses ball link connectors Top Right Take off hatch back what servos rudder elevator Above Right wing removed fuel tank battery throttle Left Tail surfaces stralgnuorwara simple Adjust control throws according text start wnn tnei ever setting feels comfortable Right dont need cut lightening holes wing ribs WN N FiT -CIIP OFF N T14E AV/k-I S WUT FAWCVS IM 51 - -WAZELS 4TI- CUB -CHUCI OFF IN CHINA! -ME-IMIN sI-IW III / FLY 1/16 CAP STRIPS OPND BOTTOM 6 I/32LITE PLY DCIJBLER UPTO NOSE REIN F jLOCK SERVO ROD TO NOSE WHEEL 7I/4XI/2LEFIN T E POST AND FIN MOUNT 1/4 SHEET TAPERED RUDDER 3/16 X 1/4 SPRUCE LE AND SPAR I/32LITE PLY AFT DOUBLER 3/16 SPRUCE ELEV JOINER 3/16 SHEET ELEVATcRS 1/4 SHEET VENTRAL WITH I/16SKID I/B SHEEr BALSA SIDES I/4 FRAMES 1/8 SHEET BALSA lOP/BOTTOM CRCSGRAIN I/B LITE-PLY SPAR _____________ REINFORCING C/S ONLY I/B LITE PLY RIB REINF OVER 1/4 DOWEL HOLD DOWNN 1/4 DOWEL INTO I/B PLYWDOD BLOCK I/BBALSA HATCH TRIANGLE STOCK 1/4 PLY FIREWALL KM 40 MOUNT DU BRO STEER ARM 2 WHEEL ON 3/16 3/16 STEERABLE NOSE GEAR 7 / / / 2 I/2WHEELS ON DUBRO /AXLES 1/16 PLYWOOD10 32 LE JOINERNYLON BOLTS SIG SKYBOLT L GEAR ON I/8FLY MOUNT THRU V2SOSPRUCE I/16LITE SHEET ALLLEAND CS 3/16 X 1/4 SPRUCE SPARS 7 I/8LITEpLY HAICH IIA I/B SHEET WEBS 1/850 SPRUCE L E 1/32 PLYDO FUSELA3E DOUBLER I/16x TE SHEET TOP AND BOTTOM 1/4 X 3/8 AILERON SPAR 3/8x 11/2 AILERO~J 7 7 1/32 PLY TIP PLATES 3/32Th1B5 ALL SAME SHAPE Left left wing panel under construction Note marks top ribs right panel should built same place atop plans rib marking bottom Right Left rightwlng panels assembled center rib Has unique construction Left Assembled wing balsa sheeting ready glued leading edge wrapped around top bottom piece Right sheeting has installed right wing panel hasnt yet trimmed center rib Photos author ribs can made either two ways first make stack blank balsa pieces cut ribs same time jigsaw band saw second method make rib template plywood metal cut out rib separately leaving little extra around edges stack ribs pin together can sanded final shape After ribs cut out sanded use felt-tip pen mark top side ribs still stacked done make sure airfoil same along wing though airfoil supposed symmetrical its very hard make perfect ribs side usually little different other lightening holes optional cut out because look good under transparent MonoKote rest parts should cut out match plans Wing Construction little different sport planes build Start pinning down bottom trailing edge TE sheet over left-hand portion plans shape 3/ x / TE piece match taper back ribs glue top sheet already pinned down Next put piece /16 scrap plans 2 in front TE sheet support front ribs sit properly Now glue %2 ribs half wing keeping square work sur face must sure ribs glued down marked side up Add sq spruce leading edge LE strip top bottom Y16 x / spruce spars sure leave little extra length center can later cut exact length needed perfect fit center rib right panel dry panel can re moved plan right panel can built over same area difference right panel should assembled marked side ribs down Glue balsa shear webs both panels center rib should now construct ed first gluing Lite Ply doublers both sides sure grain direction shown plans Cut center 26Model Aviation XII ietropfliestfle aL rna I-un ny VUI1I5 wiui EIIUUUUO IJfl Max series its best performance winds light-to-medluim 1/8 LITE PLY1/4 DOWEL1/8 SO SPRUCELEADING EDGE SHEETING IS ONE -I/IS LIGHT BALSACG RANGE 3/3D BALSA EDGE DREETING _______________OPTIONALI/IR 3/B BALSA CAPSYRIPS I/4 3/B BALSABALSA AILERON1/4 BALSA TRAILING EDGE 1/83/18 ALGA TIP PLATES LAMINATEDPLYWOOD2ITYPICAL WING RIB FROM I/3D PLYWLOD AND 1/16 BALSA-PLY TOWARDS THE INSIDESPAR JOINER ENTER RIBTYPICAL CENTER RIBI/43/IB DWBLERSPRUCE 1/32 PLYWOOD DOUBLERS WING TIP PLATE7 FUSELAGE OUBLER 3/IRI/4ELEVATOR 1/4 BALSA SHEET 1/4 BALSA________________ I/O TRI S OUTLINE OF STOCKFUSELAGE SIDES SIDE NOT SHOWN FIN INCIDENCE1/B BALSA SHEETFOR CLARITY OR OS-SI OSITIVESIDES TOPABOTTOM [v32][b-1-10-1-10]]ItBEVEL V/i 7XIIl/Al ON RAFTL/-1Il//Il DL 4 TANK- - 1/32 PLYI IyyAIl//Il RECEIVER -DOUBLERR(JDDR CO RANGEI/O TRI-STOCI LEVATOR AND RUDDER rII lii F4 THROTTLE ERVO AREAISPRUCE -2BATTERY AREAAREA O CIS M-40IF-IEND OFDOUBLER __CU MOUNTI/DSG SPRUCE WITH I/BPLYWOODSIDETOP AND BOTTOM _F2 TAPPED HOLES GEAR MOUNT FUSELAGESHEETING IS CROSS-- STEERINGVIEW ARM 4S35S0 0/IS NOSE GEAR FON COMPlUSE 010 SKYBOLT GEARDESIRES SHAPE OF SKYBOLTMA GABA GA SPORT F LY INS CON SIMILAR MOUNTED 5/52 IWITH 10-32 NYLON BOLTS MODEL AV ATION I/B LITE PLYSKYBOLT GEAR 2 WHEEL j 2-1/4 WHEELS ONORIGINAL SHAPE BANNER OR OD-BROIIDES GNED BY 3 M ALLEN JR AXLES0 2 ELAGE HATCH LANDING GEAR PATTERNRAC NG BY JOE DEMARCO 5____________________________ BKTS RESERVED FULL-SIZE PLANS AVAILABLESEE PAGE 164 rib shown dotted lines plan A-in-wide section cut out clear / ply spar joiner Glue center rib back together spar joiner place section cut out LE joiner should slid slot front center rib glued place assembly shown photos wing halves now glued together center rib Start test-fitting three pieces together cutting spars LE necessary over plan make sure sweepback set proper angle satisfied fit line up wing over plan prop up level Measure distance center LE table same thing TE wing should set up measurements same both right left panel glue together center rib Sheet leading edge done side time Start edge-gluing three /16 x 3 x 36 sheets together edgewise making sheet 9 36 Two sheets size required side Get bowl hot water small sponge wet outside sheets Wipe hot water center third sheet lengthwise let soak few minutes sheet soaking spread glue structure front spar sheet will stick thick cyanoacrylate CyA glues should used operation Stand wing up TE locate center sheet wet side out over LE Roll sheeting down onto both top bottom same time rub don glue can set dry trim excess sheet off around edges center rib other half wing done same manner trimmed center rib putting sheeting After both halves sheeted check warps arent great no problem sheeting warped side must split placing straightedge bottom sheeting cutting along center tip razor blade X-Acto knife twist wing straight reglue sheeting cut Use regular CyA glue process will easily remove twists panels providing cap strips center sheeting have installed top center sheeting cap strips now added Flip wing over bottom facing cut center rib clear aileron servo Add spruce servo rails shown pictures Scraps wing spar wood good purpose Glue bottom center sheeting cap strips cut hole aileron servo sheeting next step install aileron horns center TE pieces suggest using Du-Bro similar aileron horns Make TE pieces out sheet balsa x 1 TE stock can find size trailing edge stock can make things much easier Groove front pieces clear aileron horns glue place over horns careful get glue wire will bind up link age Make ailerons either sheet balsa x 1% TE stock Add A2 ply wing bolt doublers top bottom shown plan tips now made laminating A2 ply /16 balsa should glued until wing tips have covered glued plywood facing inside Fuselage Start gluing A2 ply dou blers front rear sure make right left side Make formers sticks shown plan F-2 should cut out shown dotted lines plan depending what tank intend use tank Kraft Slimline 4 oz what use dont need cut former Please note top piece F-2 made sq spruce helps support Left Bottom view wing center section after leading edge center sheeting have added Note servo cutout cen ter rib rails have added Right Center section now compiete hoie servo aileron horns installed Left Fuselage doublers being glued place Note marks behind doublersto avoid building two side Right ship has doublers rear weilwhich author notes very important ldeaily Blue Max II should come out weighing about 3 lb 28Model Aviation center rib aasemiy nas completed sparand leading edge joiners have glued piace have doublers loads wing mount side laying flat table doublers up glue Formers F-2 F-3 place using triangle make sure square Glue other side top two formers Drill firewall engine mount fuel lines pushrods Glue firewall front glue A-in triangle stock behind Place assembly over top view plan pin down Pull rear fuselage together glue sure straight Glue Former F-4 ply landing gear mounting plate should glued bottom x spruce glued top should now glue Lite Ply hatch frame Put bottom cross-grain sheeting A-in triangle around gear mount shown plan Drill tap landing gear mount 10-32 nylon bolts planes have used Sig Skybolt landing gearrebent desired shape front view proper shape shown plan dotted lines shown shape Skybolt gear buy am sure aluminum landing gears will work fine particular gear inexpensive readily available Place hatch position glue balsa fillers both sides Drill hatch mount wood screws outer Ny-rod tubes rudder Continued page 117 February 198529 Left Glue formers TO 0fl sloe using triangle make sure theyre square dry glue amer sloe picture Right firewall complete blind mounting nuts glued place balsa triangle stock added corners strength ii Left Dowel wing through /a plywood plate holds wing front securely Install plywood plate wing place good fit Right 1/4 plywood rear mounting plate being installed wax paper between wing bottom fuselage eft landing gear installed 10-32 nylon bolts Author uses Sig Skybolt landing gear reshaped per plans Right Jote vertical fin post embedded rear fuselage post greatly strengthens fin Installation ltS sturdy model times control rudder flyaways common Todays models neutral stability superior aerobatic performance generally bite dust seconds after loss radio signal As Sam pointed out devices cur rently market will retard throttle event interference loss transmitter signalbut require power on-board battery pack order function readers have simple solution close engine throttle upon loss power onboard battery pack please drop line Meanwhile please make sure airborne battery packs wont ejected takeoff could result just embaTrassment Have safe month John Preston 12235 Tilden wood Dr Rockville MD 20852 Blue Max/Allen Continued page 29 elevator should glued now Remem ber have come up hatch area Make sure exit fuse lage sides far enough forward interfere rudder post Mount completed wing fuse lage. First open hole dowel will go center rib test-fit dowel glue Line up wing fuselage make sure centered square dowel temporarily place slide ply wing mount place dowel glue front F-2 move wing until glue dry triangle stock can now added front wing mount wing still place slide piece wax paper between wing TE fuselage rear mounting plate glued Use 5-mm epoxy glue ply plate place under wing Hold firmly against bottom wing until glue has set Remove wax paper double check make sure wing straight Now drill down through wing doublers through mounting plate Drill out hole wing /I6 tap hole plate 10-32 bolt Add baisa top block fuselage front wing top rear balsa crossgrain sheeting Tall surfaces Build over plan shown sure use spruce leap ing trailing edges stab Cut tle hole top fuselage sheeting clear x rudder post leave part out adds great deal strength installed fin Glue stab bottom fuse lage making sure properly aligned Glue fin sub-fin place Sand rudder tapered shape suggest cut out lightening holes shown plan tail Blue Max quite long everything rear should kept light possible Finishing touches Final-sand everything cover plane ironon covering materials strongly recom mend MonoKote its strength ease application also make hinges Out same material have never failure Install engine mount nose gear nose gear goes up through mount steering arm just below mount wheel collar either inside top mount hold gear place know someone coil bender strongly recommend use Y6-in wire nose gear heavyduty struts save lot props case bender available %2-in gear will work just fine Install tank run fuel lines through center mount Mount engine 6-32 bolts out mount far enough leave room fuel lines come through Mount rudder elevator servos back under hatch Make sure far enough rearward allow receiver placed just ahead Use cable pushrod go rudder servo nose gear cable housing should firmly glued down over its en tire length prevent flexing throttle servo mounted aileron ser vo tray just ahead F-3 flat floor cable pushrod should used throttle also Battery location fuselage depends needed balancing purposes normally under wing right behind tank aileron servo mounted wing rails installed earlier Use sheet metal screws attaching servo con ventional manner CG should fall somewhere between limits shown plan best way check CG place fingers under spars both sides wing slide fingers out equally both sides limits method shown wing plan Desired control throws starting ailerons Y6 up down elevator own rudder 1A left right throws will give easy-to-fly responsive airplane After some test flights throws can adjusted whatever flier feels comfortable first flight open throttle holding slight back pressure elevator will lift off ground about 30 40 feet Let clImb out can get feel way flies its up Blue Max very versatile airplane Continued page 120 February 1 98511 7 Safety/Preston Continued page 20 especially tough events require tight maneuvering quick landings feel Blue Max superior almost event has ever flown inun til gets windy wind starts blow heavier 60-size planes have definite advantage scaled-up 60 ver sion plane might future proj ect cure problem am sure will disappointed Blue Max II Anyone has ever flown has fallen love its fly ing characteristics Have fun Fun/Winter Continued page 33 weight etc have long run-time overall duration probably will greater highest altitude will reached fly less think best-rateof-climb angle assumes means less dead weight hang prop due climb better duration plane merely device keep power system off ground until energy consumed think true Rubber Scale Indoor models applies everywhere concern have power burn tank full gas dont have power burn small-engined powered Sailplane Electric Gas angle climb frustratingly shallow very long run gets plane up launch height easily Sailplane stalls such shallow angle tiny prop just soon puttoo much dead weightupon hanging li-in drill sure throws chips disk area prop comes mind does 1/16-in drill air blast 12- 13-in folder times greater screaming 6-4 tiny prop stalls hold same nose-up steadily can dethermalize way groundat full throttle Textbook experts frothing know mans meat anothers poison John Worth AMA executive director now has LeCrate insists trying possible approach no matter unlikely Hes flying poor thing death though seems worse wear Gordon Burford Australia gave him l0-in-dia Pylon prop Yes Pylon pitch unknown Its strange club prop blades squared off outside hub lots blade area high pitch near hub almost flat near tips Thin blades sharp edges would pay dime Electrics John added 3 mm best time itand six 12 Ah cells insted seven just 2-to-i reduction switched 800 mAb cells Duration virtually same around 13 minutes could get pinpoint height once flight used speed controller could regain height second time 800s John gets pin point height second time same flight using controller extended cruise shallow climb Evans Wing modification Bill Evans modification own Simitar Deuce extremely happy airplane six flights Don Srull testing fiddling sticks along way find wing have few special traits trail-dragger ship starts roll full up hold full up way until 5 6 ft high runs along snappily two-thirds throttle steering rudder find best Using aileron trim soaring circles engine idling dead eventually model beings wind down occasional stick needed have 2A dihedral tip 5-ft wing trim circle rudder alone maintains altitude add touch inside aileron another rudder aileron rudder end up almost flat tight hands-off circles pushed extreme crossed controls eventually see what looks like rudder reversal comes out circle no needs turn dime still-lower vertical tail perhaps dorsal fin would cure truly no need speed range wide ship obviously highly efficient lightened structure electric power would make absolute world-beater grossly overpowered 19 should 120Model Aviation Blue Max/Allen Continued page 117 Great Lakes Model Company 517876-7825 100 Michigan Ave AuGres MI 48703 Send SASE flincher Deuler Inquiries Welcome List Price $28500 Factory Direct $22800 Michiganresidontsadd4%salestax VINTASI R-C PLAN CONSOLIDATED PlY-BA CATALINA 9FT WINGSPAN ALL RIASS FULL FORMERS SHOWN ON PLANS11 PLASTIC ENGCOWLS PR CLEAR GUN BLiSTERS $660 PR 4 LARGE PLAN SHEETS Plans $1695 GFT WING SPAN MODEL PSY-SA ENGINE COWLS $ 650 PR Plans $1295 GUN fiLISTERS $ 430 PR ADD S2O POSTAGE CATALOGOVER 50 PLANS tiDo DEALERS WRITE WORLD 0 WWE SID MORGAN 13157 ORMONDBELLEVILLE MICH48111 USA AT-6 SNJ-HARVARD 63375 Wingspan ngine s Complete
Edition: Model Aviation - 1985/02
Page Numbers: 22, 23, 24, 25, 26, 27, 28, 29, 117, 120
NO OCR TEXT NO OCR TEXT completed uncovered model Thisylew plus plansand cutawaydrawing should make everything cleat Among 40-size engines used have K&B HP 05 Nose gear installation deta picture DuBrosteering arm us ed Engine mounting simple used Blue Max prototypes have powered K&B 40 HP 40 OS 40 engines have worked well HP OS seemed give better vertical performance Before go construction plane let say highperformance talk does mean Blue Max hard fly contrary plane very easy fly would hesitate recommend flier very little time flying aileron trainer thing would have keep control throws far maximum have never able find single bad trait Blue Max proto types have five including shown pictures 24Model Aviation build Blue Max much fun can have h can fun-fly events right plane Construction First make yoi Cut out major parts start gluing building pro go much easier Left Aileron installation author uses ball link connectors Top Right Take off hatch back what servos rudder elevator Above Right wing removed fuel tank battery throttle Left Tail surfaces stralgnuorwara simple Adjust control throws according text start wnn tnei ever setting feels comfortable Right dont need cut lightening holes wing ribs WN N FiT -CIIP OFF N T14E AV/k-I S WUT FAWCVS IM 51 - -WAZELS 4TI- CUB -CHUCI OFF IN CHINA! -ME-IMIN sI-IW III / FLY 1/16 CAP STRIPS OPND BOTTOM 6 I/32LITE PLY DCIJBLER UPTO NOSE REIN F jLOCK SERVO ROD TO NOSE WHEEL 7I/4XI/2LEFIN T E POST AND FIN MOUNT 1/4 SHEET TAPERED RUDDER 3/16 X 1/4 SPRUCE LE AND SPAR I/32LITE PLY AFT DOUBLER 3/16 SPRUCE ELEV JOINER 3/16 SHEET ELEVATcRS 1/4 SHEET VENTRAL WITH I/16SKID I/B SHEEr BALSA SIDES I/4 FRAMES 1/8 SHEET BALSA lOP/BOTTOM CRCSGRAIN I/B LITE-PLY SPAR _____________ REINFORCING C/S ONLY I/B LITE PLY RIB REINF OVER 1/4 DOWEL HOLD DOWNN 1/4 DOWEL INTO I/B PLYWDOD BLOCK I/BBALSA HATCH TRIANGLE STOCK 1/4 PLY FIREWALL KM 40 MOUNT DU BRO STEER ARM 2 WHEEL ON 3/16 3/16 STEERABLE NOSE GEAR 7 / / / 2 I/2WHEELS ON DUBRO /AXLES 1/16 PLYWOOD10 32 LE JOINERNYLON BOLTS SIG SKYBOLT L GEAR ON I/8FLY MOUNT THRU V2SOSPRUCE I/16LITE SHEET ALLLEAND CS 3/16 X 1/4 SPRUCE SPARS 7 I/8LITEpLY HAICH IIA I/B SHEET WEBS 1/850 SPRUCE L E 1/32 PLYDO FUSELA3E DOUBLER I/16x TE SHEET TOP AND BOTTOM 1/4 X 3/8 AILERON SPAR 3/8x 11/2 AILERO~J 7 7 1/32 PLY TIP PLATES 3/32Th1B5 ALL SAME SHAPE Left left wing panel under construction Note marks top ribs right panel should built same place atop plans rib marking bottom Right Left rightwlng panels assembled center rib Has unique construction Left Assembled wing balsa sheeting ready glued leading edge wrapped around top bottom piece Right sheeting has installed right wing panel hasnt yet trimmed center rib Photos author ribs can made either two ways first make stack blank balsa pieces cut ribs same time jigsaw band saw second method make rib template plywood metal cut out rib separately leaving little extra around edges stack ribs pin together can sanded final shape After ribs cut out sanded use felt-tip pen mark top side ribs still stacked done make sure airfoil same along wing though airfoil supposed symmetrical its very hard make perfect ribs side usually little different other lightening holes optional cut out because look good under transparent MonoKote rest parts should cut out match plans Wing Construction little different sport planes build Start pinning down bottom trailing edge TE sheet over left-hand portion plans shape 3/ x / TE piece match taper back ribs glue top sheet already pinned down Next put piece /16 scrap plans 2 in front TE sheet support front ribs sit properly Now glue %2 ribs half wing keeping square work sur face must sure ribs glued down marked side up Add sq spruce leading edge LE strip top bottom Y16 x / spruce spars sure leave little extra length center can later cut exact length needed perfect fit center rib right panel dry panel can re moved plan right panel can built over same area difference right panel should assembled marked side ribs down Glue balsa shear webs both panels center rib should now construct ed first gluing Lite Ply doublers both sides sure grain direction shown plans Cut center 26Model Aviation XII ietropfliestfle aL rna I-un ny VUI1I5 wiui EIIUUUUO IJfl Max series its best performance winds light-to-medluim 1/8 LITE PLY1/4 DOWEL1/8 SO SPRUCELEADING EDGE SHEETING IS ONE -I/IS LIGHT BALSACG RANGE 3/3D BALSA EDGE DREETING _______________OPTIONALI/IR 3/B BALSA CAPSYRIPS I/4 3/B BALSABALSA AILERON1/4 BALSA TRAILING EDGE 1/83/18 ALGA TIP PLATES LAMINATEDPLYWOOD2ITYPICAL WING RIB FROM I/3D PLYWLOD AND 1/16 BALSA-PLY TOWARDS THE INSIDESPAR JOINER ENTER RIBTYPICAL CENTER RIBI/43/IB DWBLERSPRUCE 1/32 PLYWOOD DOUBLERS WING TIP PLATE7 FUSELAGE OUBLER 3/IRI/4ELEVATOR 1/4 BALSA SHEET 1/4 BALSA________________ I/O TRI S OUTLINE OF STOCKFUSELAGE SIDES SIDE NOT SHOWN FIN INCIDENCE1/B BALSA SHEETFOR CLARITY OR OS-SI OSITIVESIDES TOPABOTTOM [v32][b-1-10-1-10]]ItBEVEL V/i 7XIIl/Al ON RAFTL/-1Il//Il DL 4 TANK- - 1/32 PLYI IyyAIl//Il RECEIVER -DOUBLERR(JDDR CO RANGEI/O TRI-STOCI LEVATOR AND RUDDER rII lii F4 THROTTLE ERVO AREAISPRUCE -2BATTERY AREAAREA O CIS M-40IF-IEND OFDOUBLER __CU MOUNTI/DSG SPRUCE WITH I/BPLYWOODSIDETOP AND BOTTOM _F2 TAPPED HOLES GEAR MOUNT FUSELAGESHEETING IS CROSS-- STEERINGVIEW ARM 4S35S0 0/IS NOSE GEAR FON COMPlUSE 010 SKYBOLT GEARDESIRES SHAPE OF SKYBOLTMA GABA GA SPORT F LY INS CON SIMILAR MOUNTED 5/52 IWITH 10-32 NYLON BOLTS MODEL AV ATION I/B LITE PLYSKYBOLT GEAR 2 WHEEL j 2-1/4 WHEELS ONORIGINAL SHAPE BANNER OR OD-BROIIDES GNED BY 3 M ALLEN JR AXLES0 2 ELAGE HATCH LANDING GEAR PATTERNRAC NG BY JOE DEMARCO 5____________________________ BKTS RESERVED FULL-SIZE PLANS AVAILABLESEE PAGE 164 rib shown dotted lines plan A-in-wide section cut out clear / ply spar joiner Glue center rib back together spar joiner place section cut out LE joiner should slid slot front center rib glued place assembly shown photos wing halves now glued together center rib Start test-fitting three pieces together cutting spars LE necessary over plan make sure sweepback set proper angle satisfied fit line up wing over plan prop up level Measure distance center LE table same thing TE wing should set up measurements same both right left panel glue together center rib Sheet leading edge done side time Start edge-gluing three /16 x 3 x 36 sheets together edgewise making sheet 9 36 Two sheets size required side Get bowl hot water small sponge wet outside sheets Wipe hot water center third sheet lengthwise let soak few minutes sheet soaking spread glue structure front spar sheet will stick thick cyanoacrylate CyA glues should used operation Stand wing up TE locate center sheet wet side out over LE Roll sheeting down onto both top bottom same time rub don glue can set dry trim excess sheet off around edges center rib other half wing done same manner trimmed center rib putting sheeting After both halves sheeted check warps arent great no problem sheeting warped side must split placing straightedge bottom sheeting cutting along center tip razor blade X-Acto knife twist wing straight reglue sheeting cut Use regular CyA glue process will easily remove twists panels providing cap strips center sheeting have installed top center sheeting cap strips now added Flip wing over bottom facing cut center rib clear aileron servo Add spruce servo rails shown pictures Scraps wing spar wood good purpose Glue bottom center sheeting cap strips cut hole aileron servo sheeting next step install aileron horns center TE pieces suggest using Du-Bro similar aileron horns Make TE pieces out sheet balsa x 1 TE stock can find size trailing edge stock can make things much easier Groove front pieces clear aileron horns glue place over horns careful get glue wire will bind up link age Make ailerons either sheet balsa x 1% TE stock Add A2 ply wing bolt doublers top bottom shown plan tips now made laminating A2 ply /16 balsa should glued until wing tips have covered glued plywood facing inside Fuselage Start gluing A2 ply dou blers front rear sure make right left side Make formers sticks shown plan F-2 should cut out shown dotted lines plan depending what tank intend use tank Kraft Slimline 4 oz what use dont need cut former Please note top piece F-2 made sq spruce helps support Left Bottom view wing center section after leading edge center sheeting have added Note servo cutout cen ter rib rails have added Right Center section now compiete hoie servo aileron horns installed Left Fuselage doublers being glued place Note marks behind doublersto avoid building two side Right ship has doublers rear weilwhich author notes very important ldeaily Blue Max II should come out weighing about 3 lb 28Model Aviation center rib aasemiy nas completed sparand leading edge joiners have glued piace have doublers loads wing mount side laying flat table doublers up glue Formers F-2 F-3 place using triangle make sure square Glue other side top two formers Drill firewall engine mount fuel lines pushrods Glue firewall front glue A-in triangle stock behind Place assembly over top view plan pin down Pull rear fuselage together glue sure straight Glue Former F-4 ply landing gear mounting plate should glued bottom x spruce glued top should now glue Lite Ply hatch frame Put bottom cross-grain sheeting A-in triangle around gear mount shown plan Drill tap landing gear mount 10-32 nylon bolts planes have used Sig Skybolt landing gearrebent desired shape front view proper shape shown plan dotted lines shown shape Skybolt gear buy am sure aluminum landing gears will work fine particular gear inexpensive readily available Place hatch position glue balsa fillers both sides Drill hatch mount wood screws outer Ny-rod tubes rudder Continued page 117 February 198529 Left Glue formers TO 0fl sloe using triangle make sure theyre square dry glue amer sloe picture Right firewall complete blind mounting nuts glued place balsa triangle stock added corners strength ii Left Dowel wing through /a plywood plate holds wing front securely Install plywood plate wing place good fit Right 1/4 plywood rear mounting plate being installed wax paper between wing bottom fuselage eft landing gear installed 10-32 nylon bolts Author uses Sig Skybolt landing gear reshaped per plans Right Jote vertical fin post embedded rear fuselage post greatly strengthens fin Installation ltS sturdy model times control rudder flyaways common Todays models neutral stability superior aerobatic performance generally bite dust seconds after loss radio signal As Sam pointed out devices cur rently market will retard throttle event interference loss transmitter signalbut require power on-board battery pack order function readers have simple solution close engine throttle upon loss power onboard battery pack please drop line Meanwhile please make sure airborne battery packs wont ejected takeoff could result just embaTrassment Have safe month John Preston 12235 Tilden wood Dr Rockville MD 20852 Blue Max/Allen Continued page 29 elevator should glued now Remem ber have come up hatch area Make sure exit fuse lage sides far enough forward interfere rudder post Mount completed wing fuse lage. First open hole dowel will go center rib test-fit dowel glue Line up wing fuselage make sure centered square dowel temporarily place slide ply wing mount place dowel glue front F-2 move wing until glue dry triangle stock can now added front wing mount wing still place slide piece wax paper between wing TE fuselage rear mounting plate glued Use 5-mm epoxy glue ply plate place under wing Hold firmly against bottom wing until glue has set Remove wax paper double check make sure wing straight Now drill down through wing doublers through mounting plate Drill out hole wing /I6 tap hole plate 10-32 bolt Add baisa top block fuselage front wing top rear balsa crossgrain sheeting Tall surfaces Build over plan shown sure use spruce leap ing trailing edges stab Cut tle hole top fuselage sheeting clear x rudder post leave part out adds great deal strength installed fin Glue stab bottom fuse lage making sure properly aligned Glue fin sub-fin place Sand rudder tapered shape suggest cut out lightening holes shown plan tail Blue Max quite long everything rear should kept light possible Finishing touches Final-sand everything cover plane ironon covering materials strongly recom mend MonoKote its strength ease application also make hinges Out same material have never failure Install engine mount nose gear nose gear goes up through mount steering arm just below mount wheel collar either inside top mount hold gear place know someone coil bender strongly recommend use Y6-in wire nose gear heavyduty struts save lot props case bender available %2-in gear will work just fine Install tank run fuel lines through center mount Mount engine 6-32 bolts out mount far enough leave room fuel lines come through Mount rudder elevator servos back under hatch Make sure far enough rearward allow receiver placed just ahead Use cable pushrod go rudder servo nose gear cable housing should firmly glued down over its en tire length prevent flexing throttle servo mounted aileron ser vo tray just ahead F-3 flat floor cable pushrod should used throttle also Battery location fuselage depends needed balancing purposes normally under wing right behind tank aileron servo mounted wing rails installed earlier Use sheet metal screws attaching servo con ventional manner CG should fall somewhere between limits shown plan best way check CG place fingers under spars both sides wing slide fingers out equally both sides limits method shown wing plan Desired control throws starting ailerons Y6 up down elevator own rudder 1A left right throws will give easy-to-fly responsive airplane After some test flights throws can adjusted whatever flier feels comfortable first flight open throttle holding slight back pressure elevator will lift off ground about 30 40 feet Let clImb out can get feel way flies its up Blue Max very versatile airplane Continued page 120 February 1 98511 7 Safety/Preston Continued page 20 especially tough events require tight maneuvering quick landings feel Blue Max superior almost event has ever flown inun til gets windy wind starts blow heavier 60-size planes have definite advantage scaled-up 60 ver sion plane might future proj ect cure problem am sure will disappointed Blue Max II Anyone has ever flown has fallen love its fly ing characteristics Have fun Fun/Winter Continued page 33 weight etc have long run-time overall duration probably will greater highest altitude will reached fly less think best-rateof-climb angle assumes means less dead weight hang prop due climb better duration plane merely device keep power system off ground until energy consumed think true Rubber Scale Indoor models applies everywhere concern have power burn tank full gas dont have power burn small-engined powered Sailplane Electric Gas angle climb frustratingly shallow very long run gets plane up launch height easily Sailplane stalls such shallow angle tiny prop just soon puttoo much dead weightupon hanging li-in drill sure throws chips disk area prop comes mind does 1/16-in drill air blast 12- 13-in folder times greater screaming 6-4 tiny prop stalls hold same nose-up steadily can dethermalize way groundat full throttle Textbook experts frothing know mans meat anothers poison John Worth AMA executive director now has LeCrate insists trying possible approach no matter unlikely Hes flying poor thing death though seems worse wear Gordon Burford Australia gave him l0-in-dia Pylon prop Yes Pylon pitch unknown Its strange club prop blades squared off outside hub lots blade area high pitch near hub almost flat near tips Thin blades sharp edges would pay dime Electrics John added 3 mm best time itand six 12 Ah cells insted seven just 2-to-i reduction switched 800 mAb cells Duration virtually same around 13 minutes could get pinpoint height once flight used speed controller could regain height second time 800s John gets pin point height second time same flight using controller extended cruise shallow climb Evans Wing modification Bill Evans modification own Simitar Deuce extremely happy airplane six flights Don Srull testing fiddling sticks along way find wing have few special traits trail-dragger ship starts roll full up hold full up way until 5 6 ft high runs along snappily two-thirds throttle steering rudder find best Using aileron trim soaring circles engine idling dead eventually model beings wind down occasional stick needed have 2A dihedral tip 5-ft wing trim circle rudder alone maintains altitude add touch inside aileron another rudder aileron rudder end up almost flat tight hands-off circles pushed extreme crossed controls eventually see what looks like rudder reversal comes out circle no needs turn dime still-lower vertical tail perhaps dorsal fin would cure truly no need speed range wide ship obviously highly efficient lightened structure electric power would make absolute world-beater grossly overpowered 19 should 120Model Aviation Blue Max/Allen Continued page 117 Great Lakes Model Company 517876-7825 100 Michigan Ave AuGres MI 48703 Send SASE flincher Deuler Inquiries Welcome List Price $28500 Factory Direct $22800 Michiganresidontsadd4%salestax VINTASI R-C PLAN CONSOLIDATED PlY-BA CATALINA 9FT WINGSPAN ALL RIASS FULL FORMERS SHOWN ON PLANS11 PLASTIC ENGCOWLS PR CLEAR GUN BLiSTERS $660 PR 4 LARGE PLAN SHEETS Plans $1695 GFT WING SPAN MODEL PSY-SA ENGINE COWLS $ 650 PR Plans $1295 GUN fiLISTERS $ 430 PR ADD S2O POSTAGE CATALOGOVER 50 PLANS tiDo DEALERS WRITE WORLD 0 WWE SID MORGAN 13157 ORMONDBELLEVILLE MICH48111 USA AT-6 SNJ-HARVARD 63375 Wingspan ngine s Complete
Edition: Model Aviation - 1985/02
Page Numbers: 22, 23, 24, 25, 26, 27, 28, 29, 117, 120
NO OCR TEXT NO OCR TEXT completed uncovered model Thisylew plus plansand cutawaydrawing should make everything cleat Among 40-size engines used have K&B HP 05 Nose gear installation deta picture DuBrosteering arm us ed Engine mounting simple used Blue Max prototypes have powered K&B 40 HP 40 OS 40 engines have worked well HP OS seemed give better vertical performance Before go construction plane let say highperformance talk does mean Blue Max hard fly contrary plane very easy fly would hesitate recommend flier very little time flying aileron trainer thing would have keep control throws far maximum have never able find single bad trait Blue Max proto types have five including shown pictures 24Model Aviation build Blue Max much fun can have h can fun-fly events right plane Construction First make yoi Cut out major parts start gluing building pro go much easier Left Aileron installation author uses ball link connectors Top Right Take off hatch back what servos rudder elevator Above Right wing removed fuel tank battery throttle Left Tail surfaces stralgnuorwara simple Adjust control throws according text start wnn tnei ever setting feels comfortable Right dont need cut lightening holes wing ribs WN N FiT -CIIP OFF N T14E AV/k-I S WUT FAWCVS IM 51 - -WAZELS 4TI- CUB -CHUCI OFF IN CHINA! -ME-IMIN sI-IW III / FLY 1/16 CAP STRIPS OPND BOTTOM 6 I/32LITE PLY DCIJBLER UPTO NOSE REIN F jLOCK SERVO ROD TO NOSE WHEEL 7I/4XI/2LEFIN T E POST AND FIN MOUNT 1/4 SHEET TAPERED RUDDER 3/16 X 1/4 SPRUCE LE AND SPAR I/32LITE PLY AFT DOUBLER 3/16 SPRUCE ELEV JOINER 3/16 SHEET ELEVATcRS 1/4 SHEET VENTRAL WITH I/16SKID I/B SHEEr BALSA SIDES I/4 FRAMES 1/8 SHEET BALSA lOP/BOTTOM CRCSGRAIN I/B LITE-PLY SPAR _____________ REINFORCING C/S ONLY I/B LITE PLY RIB REINF OVER 1/4 DOWEL HOLD DOWNN 1/4 DOWEL INTO I/B PLYWDOD BLOCK I/BBALSA HATCH TRIANGLE STOCK 1/4 PLY FIREWALL KM 40 MOUNT DU BRO STEER ARM 2 WHEEL ON 3/16 3/16 STEERABLE NOSE GEAR 7 / / / 2 I/2WHEELS ON DUBRO /AXLES 1/16 PLYWOOD10 32 LE JOINERNYLON BOLTS SIG SKYBOLT L GEAR ON I/8FLY MOUNT THRU V2SOSPRUCE I/16LITE SHEET ALLLEAND CS 3/16 X 1/4 SPRUCE SPARS 7 I/8LITEpLY HAICH IIA I/B SHEET WEBS 1/850 SPRUCE L E 1/32 PLYDO FUSELA3E DOUBLER I/16x TE SHEET TOP AND BOTTOM 1/4 X 3/8 AILERON SPAR 3/8x 11/2 AILERO~J 7 7 1/32 PLY TIP PLATES 3/32Th1B5 ALL SAME SHAPE Left left wing panel under construction Note marks top ribs right panel should built same place atop plans rib marking bottom Right Left rightwlng panels assembled center rib Has unique construction Left Assembled wing balsa sheeting ready glued leading edge wrapped around top bottom piece Right sheeting has installed right wing panel hasnt yet trimmed center rib Photos author ribs can made either two ways first make stack blank balsa pieces cut ribs same time jigsaw band saw second method make rib template plywood metal cut out rib separately leaving little extra around edges stack ribs pin together can sanded final shape After ribs cut out sanded use felt-tip pen mark top side ribs still stacked done make sure airfoil same along wing though airfoil supposed symmetrical its very hard make perfect ribs side usually little different other lightening holes optional cut out because look good under transparent MonoKote rest parts should cut out match plans Wing Construction little different sport planes build Start pinning down bottom trailing edge TE sheet over left-hand portion plans shape 3/ x / TE piece match taper back ribs glue top sheet already pinned down Next put piece /16 scrap plans 2 in front TE sheet support front ribs sit properly Now glue %2 ribs half wing keeping square work sur face must sure ribs glued down marked side up Add sq spruce leading edge LE strip top bottom Y16 x / spruce spars sure leave little extra length center can later cut exact length needed perfect fit center rib right panel dry panel can re moved plan right panel can built over same area difference right panel should assembled marked side ribs down Glue balsa shear webs both panels center rib should now construct ed first gluing Lite Ply doublers both sides sure grain direction shown plans Cut center 26Model Aviation XII ietropfliestfle aL rna I-un ny VUI1I5 wiui EIIUUUUO IJfl Max series its best performance winds light-to-medluim 1/8 LITE PLY1/4 DOWEL1/8 SO SPRUCELEADING EDGE SHEETING IS ONE -I/IS LIGHT BALSACG RANGE 3/3D BALSA EDGE DREETING _______________OPTIONALI/IR 3/B BALSA CAPSYRIPS I/4 3/B BALSABALSA AILERON1/4 BALSA TRAILING EDGE 1/83/18 ALGA TIP PLATES LAMINATEDPLYWOOD2ITYPICAL WING RIB FROM I/3D PLYWLOD AND 1/16 BALSA-PLY TOWARDS THE INSIDESPAR JOINER ENTER RIBTYPICAL CENTER RIBI/43/IB DWBLERSPRUCE 1/32 PLYWOOD DOUBLERS WING TIP PLATE7 FUSELAGE OUBLER 3/IRI/4ELEVATOR 1/4 BALSA SHEET 1/4 BALSA________________ I/O TRI S OUTLINE OF STOCKFUSELAGE SIDES SIDE NOT SHOWN FIN INCIDENCE1/B BALSA SHEETFOR CLARITY OR OS-SI OSITIVESIDES TOPABOTTOM [v32][b-1-10-1-10]]ItBEVEL V/i 7XIIl/Al ON RAFTL/-1Il//Il DL 4 TANK- - 1/32 PLYI IyyAIl//Il RECEIVER -DOUBLERR(JDDR CO RANGEI/O TRI-STOCI LEVATOR AND RUDDER rII lii F4 THROTTLE ERVO AREAISPRUCE -2BATTERY AREAAREA O CIS M-40IF-IEND OFDOUBLER __CU MOUNTI/DSG SPRUCE WITH I/BPLYWOODSIDETOP AND BOTTOM _F2 TAPPED HOLES GEAR MOUNT FUSELAGESHEETING IS CROSS-- STEERINGVIEW ARM 4S35S0 0/IS NOSE GEAR FON COMPlUSE 010 SKYBOLT GEARDESIRES SHAPE OF SKYBOLTMA GABA GA SPORT F LY INS CON SIMILAR MOUNTED 5/52 IWITH 10-32 NYLON BOLTS MODEL AV ATION I/B LITE PLYSKYBOLT GEAR 2 WHEEL j 2-1/4 WHEELS ONORIGINAL SHAPE BANNER OR OD-BROIIDES GNED BY 3 M ALLEN JR AXLES0 2 ELAGE HATCH LANDING GEAR PATTERNRAC NG BY JOE DEMARCO 5____________________________ BKTS RESERVED FULL-SIZE PLANS AVAILABLESEE PAGE 164 rib shown dotted lines plan A-in-wide section cut out clear / ply spar joiner Glue center rib back together spar joiner place section cut out LE joiner should slid slot front center rib glued place assembly shown photos wing halves now glued together center rib Start test-fitting three pieces together cutting spars LE necessary over plan make sure sweepback set proper angle satisfied fit line up wing over plan prop up level Measure distance center LE table same thing TE wing should set up measurements same both right left panel glue together center rib Sheet leading edge done side time Start edge-gluing three /16 x 3 x 36 sheets together edgewise making sheet 9 36 Two sheets size required side Get bowl hot water small sponge wet outside sheets Wipe hot water center third sheet lengthwise let soak few minutes sheet soaking spread glue structure front spar sheet will stick thick cyanoacrylate CyA glues should used operation Stand wing up TE locate center sheet wet side out over LE Roll sheeting down onto both top bottom same time rub don glue can set dry trim excess sheet off around edges center rib other half wing done same manner trimmed center rib putting sheeting After both halves sheeted check warps arent great no problem sheeting warped side must split placing straightedge bottom sheeting cutting along center tip razor blade X-Acto knife twist wing straight reglue sheeting cut Use regular CyA glue process will easily remove twists panels providing cap strips center sheeting have installed top center sheeting cap strips now added Flip wing over bottom facing cut center rib clear aileron servo Add spruce servo rails shown pictures Scraps wing spar wood good purpose Glue bottom center sheeting cap strips cut hole aileron servo sheeting next step install aileron horns center TE pieces suggest using Du-Bro similar aileron horns Make TE pieces out sheet balsa x 1 TE stock can find size trailing edge stock can make things much easier Groove front pieces clear aileron horns glue place over horns careful get glue wire will bind up link age Make ailerons either sheet balsa x 1% TE stock Add A2 ply wing bolt doublers top bottom shown plan tips now made laminating A2 ply /16 balsa should glued until wing tips have covered glued plywood facing inside Fuselage Start gluing A2 ply dou blers front rear sure make right left side Make formers sticks shown plan F-2 should cut out shown dotted lines plan depending what tank intend use tank Kraft Slimline 4 oz what use dont need cut former Please note top piece F-2 made sq spruce helps support Left Bottom view wing center section after leading edge center sheeting have added Note servo cutout cen ter rib rails have added Right Center section now compiete hoie servo aileron horns installed Left Fuselage doublers being glued place Note marks behind doublersto avoid building two side Right ship has doublers rear weilwhich author notes very important ldeaily Blue Max II should come out weighing about 3 lb 28Model Aviation center rib aasemiy nas completed sparand leading edge joiners have glued piace have doublers loads wing mount side laying flat table doublers up glue Formers F-2 F-3 place using triangle make sure square Glue other side top two formers Drill firewall engine mount fuel lines pushrods Glue firewall front glue A-in triangle stock behind Place assembly over top view plan pin down Pull rear fuselage together glue sure straight Glue Former F-4 ply landing gear mounting plate should glued bottom x spruce glued top should now glue Lite Ply hatch frame Put bottom cross-grain sheeting A-in triangle around gear mount shown plan Drill tap landing gear mount 10-32 nylon bolts planes have used Sig Skybolt landing gearrebent desired shape front view proper shape shown plan dotted lines shown shape Skybolt gear buy am sure aluminum landing gears will work fine particular gear inexpensive readily available Place hatch position glue balsa fillers both sides Drill hatch mount wood screws outer Ny-rod tubes rudder Continued page 117 February 198529 Left Glue formers TO 0fl sloe using triangle make sure theyre square dry glue amer sloe picture Right firewall complete blind mounting nuts glued place balsa triangle stock added corners strength ii Left Dowel wing through /a plywood plate holds wing front securely Install plywood plate wing place good fit Right 1/4 plywood rear mounting plate being installed wax paper between wing bottom fuselage eft landing gear installed 10-32 nylon bolts Author uses Sig Skybolt landing gear reshaped per plans Right Jote vertical fin post embedded rear fuselage post greatly strengthens fin Installation ltS sturdy model times control rudder flyaways common Todays models neutral stability superior aerobatic performance generally bite dust seconds after loss radio signal As Sam pointed out devices cur rently market will retard throttle event interference loss transmitter signalbut require power on-board battery pack order function readers have simple solution close engine throttle upon loss power onboard battery pack please drop line Meanwhile please make sure airborne battery packs wont ejected takeoff could result just embaTrassment Have safe month John Preston 12235 Tilden wood Dr Rockville MD 20852 Blue Max/Allen Continued page 29 elevator should glued now Remem ber have come up hatch area Make sure exit fuse lage sides far enough forward interfere rudder post Mount completed wing fuse lage. First open hole dowel will go center rib test-fit dowel glue Line up wing fuselage make sure centered square dowel temporarily place slide ply wing mount place dowel glue front F-2 move wing until glue dry triangle stock can now added front wing mount wing still place slide piece wax paper between wing TE fuselage rear mounting plate glued Use 5-mm epoxy glue ply plate place under wing Hold firmly against bottom wing until glue has set Remove wax paper double check make sure wing straight Now drill down through wing doublers through mounting plate Drill out hole wing /I6 tap hole plate 10-32 bolt Add baisa top block fuselage front wing top rear balsa crossgrain sheeting Tall surfaces Build over plan shown sure use spruce leap ing trailing edges stab Cut tle hole top fuselage sheeting clear x rudder post leave part out adds great deal strength installed fin Glue stab bottom fuse lage making sure properly aligned Glue fin sub-fin place Sand rudder tapered shape suggest cut out lightening holes shown plan tail Blue Max quite long everything rear should kept light possible Finishing touches Final-sand everything cover plane ironon covering materials strongly recom mend MonoKote its strength ease application also make hinges Out same material have never failure Install engine mount nose gear nose gear goes up through mount steering arm just below mount wheel collar either inside top mount hold gear place know someone coil bender strongly recommend use Y6-in wire nose gear heavyduty struts save lot props case bender available %2-in gear will work just fine Install tank run fuel lines through center mount Mount engine 6-32 bolts out mount far enough leave room fuel lines come through Mount rudder elevator servos back under hatch Make sure far enough rearward allow receiver placed just ahead Use cable pushrod go rudder servo nose gear cable housing should firmly glued down over its en tire length prevent flexing throttle servo mounted aileron ser vo tray just ahead F-3 flat floor cable pushrod should used throttle also Battery location fuselage depends needed balancing purposes normally under wing right behind tank aileron servo mounted wing rails installed earlier Use sheet metal screws attaching servo con ventional manner CG should fall somewhere between limits shown plan best way check CG place fingers under spars both sides wing slide fingers out equally both sides limits method shown wing plan Desired control throws starting ailerons Y6 up down elevator own rudder 1A left right throws will give easy-to-fly responsive airplane After some test flights throws can adjusted whatever flier feels comfortable first flight open throttle holding slight back pressure elevator will lift off ground about 30 40 feet Let clImb out can get feel way flies its up Blue Max very versatile airplane Continued page 120 February 1 98511 7 Safety/Preston Continued page 20 especially tough events require tight maneuvering quick landings feel Blue Max superior almost event has ever flown inun til gets windy wind starts blow heavier 60-size planes have definite advantage scaled-up 60 ver sion plane might future proj ect cure problem am sure will disappointed Blue Max II Anyone has ever flown has fallen love its fly ing characteristics Have fun Fun/Winter Continued page 33 weight etc have long run-time overall duration probably will greater highest altitude will reached fly less think best-rateof-climb angle assumes means less dead weight hang prop due climb better duration plane merely device keep power system off ground until energy consumed think true Rubber Scale Indoor models applies everywhere concern have power burn tank full gas dont have power burn small-engined powered Sailplane Electric Gas angle climb frustratingly shallow very long run gets plane up launch height easily Sailplane stalls such shallow angle tiny prop just soon puttoo much dead weightupon hanging li-in drill sure throws chips disk area prop comes mind does 1/16-in drill air blast 12- 13-in folder times greater screaming 6-4 tiny prop stalls hold same nose-up steadily can dethermalize way groundat full throttle Textbook experts frothing know mans meat anothers poison John Worth AMA executive director now has LeCrate insists trying possible approach no matter unlikely Hes flying poor thing death though seems worse wear Gordon Burford Australia gave him l0-in-dia Pylon prop Yes Pylon pitch unknown Its strange club prop blades squared off outside hub lots blade area high pitch near hub almost flat near tips Thin blades sharp edges would pay dime Electrics John added 3 mm best time itand six 12 Ah cells insted seven just 2-to-i reduction switched 800 mAb cells Duration virtually same around 13 minutes could get pinpoint height once flight used speed controller could regain height second time 800s John gets pin point height second time same flight using controller extended cruise shallow climb Evans Wing modification Bill Evans modification own Simitar Deuce extremely happy airplane six flights Don Srull testing fiddling sticks along way find wing have few special traits trail-dragger ship starts roll full up hold full up way until 5 6 ft high runs along snappily two-thirds throttle steering rudder find best Using aileron trim soaring circles engine idling dead eventually model beings wind down occasional stick needed have 2A dihedral tip 5-ft wing trim circle rudder alone maintains altitude add touch inside aileron another rudder aileron rudder end up almost flat tight hands-off circles pushed extreme crossed controls eventually see what looks like rudder reversal comes out circle no needs turn dime still-lower vertical tail perhaps dorsal fin would cure truly no need speed range wide ship obviously highly efficient lightened structure electric power would make absolute world-beater grossly overpowered 19 should 120Model Aviation Blue Max/Allen Continued page 117 Great Lakes Model Company 517876-7825 100 Michigan Ave AuGres MI 48703 Send SASE flincher Deuler Inquiries Welcome List Price $28500 Factory Direct $22800 Michiganresidontsadd4%salestax VINTASI R-C PLAN CONSOLIDATED PlY-BA CATALINA 9FT WINGSPAN ALL RIASS FULL FORMERS SHOWN ON PLANS11 PLASTIC ENGCOWLS PR CLEAR GUN BLiSTERS $660 PR 4 LARGE PLAN SHEETS Plans $1695 GFT WING SPAN MODEL PSY-SA ENGINE COWLS $ 650 PR Plans $1295 GUN fiLISTERS $ 430 PR ADD S2O POSTAGE CATALOGOVER 50 PLANS tiDo DEALERS WRITE WORLD 0 WWE SID MORGAN 13157 ORMONDBELLEVILLE MICH48111 USA AT-6 SNJ-HARVARD 63375 Wingspan ngine s Complete
Edition: Model Aviation - 1985/02
Page Numbers: 22, 23, 24, 25, 26, 27, 28, 29, 117, 120
NO OCR TEXT NO OCR TEXT completed uncovered model Thisylew plus plansand cutawaydrawing should make everything cleat Among 40-size engines used have K&B HP 05 Nose gear installation deta picture DuBrosteering arm us ed Engine mounting simple used Blue Max prototypes have powered K&B 40 HP 40 OS 40 engines have worked well HP OS seemed give better vertical performance Before go construction plane let say highperformance talk does mean Blue Max hard fly contrary plane very easy fly would hesitate recommend flier very little time flying aileron trainer thing would have keep control throws far maximum have never able find single bad trait Blue Max proto types have five including shown pictures 24Model Aviation build Blue Max much fun can have h can fun-fly events right plane Construction First make yoi Cut out major parts start gluing building pro go much easier Left Aileron installation author uses ball link connectors Top Right Take off hatch back what servos rudder elevator Above Right wing removed fuel tank battery throttle Left Tail surfaces stralgnuorwara simple Adjust control throws according text start wnn tnei ever setting feels comfortable Right dont need cut lightening holes wing ribs WN N FiT -CIIP OFF N T14E AV/k-I S WUT FAWCVS IM 51 - -WAZELS 4TI- CUB -CHUCI OFF IN CHINA! -ME-IMIN sI-IW III / FLY 1/16 CAP STRIPS OPND BOTTOM 6 I/32LITE PLY DCIJBLER UPTO NOSE REIN F jLOCK SERVO ROD TO NOSE WHEEL 7I/4XI/2LEFIN T E POST AND FIN MOUNT 1/4 SHEET TAPERED RUDDER 3/16 X 1/4 SPRUCE LE AND SPAR I/32LITE PLY AFT DOUBLER 3/16 SPRUCE ELEV JOINER 3/16 SHEET ELEVATcRS 1/4 SHEET VENTRAL WITH I/16SKID I/B SHEEr BALSA SIDES I/4 FRAMES 1/8 SHEET BALSA lOP/BOTTOM CRCSGRAIN I/B LITE-PLY SPAR _____________ REINFORCING C/S ONLY I/B LITE PLY RIB REINF OVER 1/4 DOWEL HOLD DOWNN 1/4 DOWEL INTO I/B PLYWDOD BLOCK I/BBALSA HATCH TRIANGLE STOCK 1/4 PLY FIREWALL KM 40 MOUNT DU BRO STEER ARM 2 WHEEL ON 3/16 3/16 STEERABLE NOSE GEAR 7 / / / 2 I/2WHEELS ON DUBRO /AXLES 1/16 PLYWOOD10 32 LE JOINERNYLON BOLTS SIG SKYBOLT L GEAR ON I/8FLY MOUNT THRU V2SOSPRUCE I/16LITE SHEET ALLLEAND CS 3/16 X 1/4 SPRUCE SPARS 7 I/8LITEpLY HAICH IIA I/B SHEET WEBS 1/850 SPRUCE L E 1/32 PLYDO FUSELA3E DOUBLER I/16x TE SHEET TOP AND BOTTOM 1/4 X 3/8 AILERON SPAR 3/8x 11/2 AILERO~J 7 7 1/32 PLY TIP PLATES 3/32Th1B5 ALL SAME SHAPE Left left wing panel under construction Note marks top ribs right panel should built same place atop plans rib marking bottom Right Left rightwlng panels assembled center rib Has unique construction Left Assembled wing balsa sheeting ready glued leading edge wrapped around top bottom piece Right sheeting has installed right wing panel hasnt yet trimmed center rib Photos author ribs can made either two ways first make stack blank balsa pieces cut ribs same time jigsaw band saw second method make rib template plywood metal cut out rib separately leaving little extra around edges stack ribs pin together can sanded final shape After ribs cut out sanded use felt-tip pen mark top side ribs still stacked done make sure airfoil same along wing though airfoil supposed symmetrical its very hard make perfect ribs side usually little different other lightening holes optional cut out because look good under transparent MonoKote rest parts should cut out match plans Wing Construction little different sport planes build Start pinning down bottom trailing edge TE sheet over left-hand portion plans shape 3/ x / TE piece match taper back ribs glue top sheet already pinned down Next put piece /16 scrap plans 2 in front TE sheet support front ribs sit properly Now glue %2 ribs half wing keeping square work sur face must sure ribs glued down marked side up Add sq spruce leading edge LE strip top bottom Y16 x / spruce spars sure leave little extra length center can later cut exact length needed perfect fit center rib right panel dry panel can re moved plan right panel can built over same area difference right panel should assembled marked side ribs down Glue balsa shear webs both panels center rib should now construct ed first gluing Lite Ply doublers both sides sure grain direction shown plans Cut center 26Model Aviation XII ietropfliestfle aL rna I-un ny VUI1I5 wiui EIIUUUUO IJfl Max series its best performance winds light-to-medluim 1/8 LITE PLY1/4 DOWEL1/8 SO SPRUCELEADING EDGE SHEETING IS ONE -I/IS LIGHT BALSACG RANGE 3/3D BALSA EDGE DREETING _______________OPTIONALI/IR 3/B BALSA CAPSYRIPS I/4 3/B BALSABALSA AILERON1/4 BALSA TRAILING EDGE 1/83/18 ALGA TIP PLATES LAMINATEDPLYWOOD2ITYPICAL WING RIB FROM I/3D PLYWLOD AND 1/16 BALSA-PLY TOWARDS THE INSIDESPAR JOINER ENTER RIBTYPICAL CENTER RIBI/43/IB DWBLERSPRUCE 1/32 PLYWOOD DOUBLERS WING TIP PLATE7 FUSELAGE OUBLER 3/IRI/4ELEVATOR 1/4 BALSA SHEET 1/4 BALSA________________ I/O TRI S OUTLINE OF STOCKFUSELAGE SIDES SIDE NOT SHOWN FIN INCIDENCE1/B BALSA SHEETFOR CLARITY OR OS-SI OSITIVESIDES TOPABOTTOM [v32][b-1-10-1-10]]ItBEVEL V/i 7XIIl/Al ON RAFTL/-1Il//Il DL 4 TANK- - 1/32 PLYI IyyAIl//Il RECEIVER -DOUBLERR(JDDR CO RANGEI/O TRI-STOCI LEVATOR AND RUDDER rII lii F4 THROTTLE ERVO AREAISPRUCE -2BATTERY AREAAREA O CIS M-40IF-IEND OFDOUBLER __CU MOUNTI/DSG SPRUCE WITH I/BPLYWOODSIDETOP AND BOTTOM _F2 TAPPED HOLES GEAR MOUNT FUSELAGESHEETING IS CROSS-- STEERINGVIEW ARM 4S35S0 0/IS NOSE GEAR FON COMPlUSE 010 SKYBOLT GEARDESIRES SHAPE OF SKYBOLTMA GABA GA SPORT F LY INS CON SIMILAR MOUNTED 5/52 IWITH 10-32 NYLON BOLTS MODEL AV ATION I/B LITE PLYSKYBOLT GEAR 2 WHEEL j 2-1/4 WHEELS ONORIGINAL SHAPE BANNER OR OD-BROIIDES GNED BY 3 M ALLEN JR AXLES0 2 ELAGE HATCH LANDING GEAR PATTERNRAC NG BY JOE DEMARCO 5____________________________ BKTS RESERVED FULL-SIZE PLANS AVAILABLESEE PAGE 164 rib shown dotted lines plan A-in-wide section cut out clear / ply spar joiner Glue center rib back together spar joiner place section cut out LE joiner should slid slot front center rib glued place assembly shown photos wing halves now glued together center rib Start test-fitting three pieces together cutting spars LE necessary over plan make sure sweepback set proper angle satisfied fit line up wing over plan prop up level Measure distance center LE table same thing TE wing should set up measurements same both right left panel glue together center rib Sheet leading edge done side time Start edge-gluing three /16 x 3 x 36 sheets together edgewise making sheet 9 36 Two sheets size required side Get bowl hot water small sponge wet outside sheets Wipe hot water center third sheet lengthwise let soak few minutes sheet soaking spread glue structure front spar sheet will stick thick cyanoacrylate CyA glues should used operation Stand wing up TE locate center sheet wet side out over LE Roll sheeting down onto both top bottom same time rub don glue can set dry trim excess sheet off around edges center rib other half wing done same manner trimmed center rib putting sheeting After both halves sheeted check warps arent great no problem sheeting warped side must split placing straightedge bottom sheeting cutting along center tip razor blade X-Acto knife twist wing straight reglue sheeting cut Use regular CyA glue process will easily remove twists panels providing cap strips center sheeting have installed top center sheeting cap strips now added Flip wing over bottom facing cut center rib clear aileron servo Add spruce servo rails shown pictures Scraps wing spar wood good purpose Glue bottom center sheeting cap strips cut hole aileron servo sheeting next step install aileron horns center TE pieces suggest using Du-Bro similar aileron horns Make TE pieces out sheet balsa x 1 TE stock can find size trailing edge stock can make things much easier Groove front pieces clear aileron horns glue place over horns careful get glue wire will bind up link age Make ailerons either sheet balsa x 1% TE stock Add A2 ply wing bolt doublers top bottom shown plan tips now made laminating A2 ply /16 balsa should glued until wing tips have covered glued plywood facing inside Fuselage Start gluing A2 ply dou blers front rear sure make right left side Make formers sticks shown plan F-2 should cut out shown dotted lines plan depending what tank intend use tank Kraft Slimline 4 oz what use dont need cut former Please note top piece F-2 made sq spruce helps support Left Bottom view wing center section after leading edge center sheeting have added Note servo cutout cen ter rib rails have added Right Center section now compiete hoie servo aileron horns installed Left Fuselage doublers being glued place Note marks behind doublersto avoid building two side Right ship has doublers rear weilwhich author notes very important ldeaily Blue Max II should come out weighing about 3 lb 28Model Aviation center rib aasemiy nas completed sparand leading edge joiners have glued piace have doublers loads wing mount side laying flat table doublers up glue Formers F-2 F-3 place using triangle make sure square Glue other side top two formers Drill firewall engine mount fuel lines pushrods Glue firewall front glue A-in triangle stock behind Place assembly over top view plan pin down Pull rear fuselage together glue sure straight Glue Former F-4 ply landing gear mounting plate should glued bottom x spruce glued top should now glue Lite Ply hatch frame Put bottom cross-grain sheeting A-in triangle around gear mount shown plan Drill tap landing gear mount 10-32 nylon bolts planes have used Sig Skybolt landing gearrebent desired shape front view proper shape shown plan dotted lines shown shape Skybolt gear buy am sure aluminum landing gears will work fine particular gear inexpensive readily available Place hatch position glue balsa fillers both sides Drill hatch mount wood screws outer Ny-rod tubes rudder Continued page 117 February 198529 Left Glue formers TO 0fl sloe using triangle make sure theyre square dry glue amer sloe picture Right firewall complete blind mounting nuts glued place balsa triangle stock added corners strength ii Left Dowel wing through /a plywood plate holds wing front securely Install plywood plate wing place good fit Right 1/4 plywood rear mounting plate being installed wax paper between wing bottom fuselage eft landing gear installed 10-32 nylon bolts Author uses Sig Skybolt landing gear reshaped per plans Right Jote vertical fin post embedded rear fuselage post greatly strengthens fin Installation ltS sturdy model times control rudder flyaways common Todays models neutral stability superior aerobatic performance generally bite dust seconds after loss radio signal As Sam pointed out devices cur rently market will retard throttle event interference loss transmitter signalbut require power on-board battery pack order function readers have simple solution close engine throttle upon loss power onboard battery pack please drop line Meanwhile please make sure airborne battery packs wont ejected takeoff could result just embaTrassment Have safe month John Preston 12235 Tilden wood Dr Rockville MD 20852 Blue Max/Allen Continued page 29 elevator should glued now Remem ber have come up hatch area Make sure exit fuse lage sides far enough forward interfere rudder post Mount completed wing fuse lage. First open hole dowel will go center rib test-fit dowel glue Line up wing fuselage make sure centered square dowel temporarily place slide ply wing mount place dowel glue front F-2 move wing until glue dry triangle stock can now added front wing mount wing still place slide piece wax paper between wing TE fuselage rear mounting plate glued Use 5-mm epoxy glue ply plate place under wing Hold firmly against bottom wing until glue has set Remove wax paper double check make sure wing straight Now drill down through wing doublers through mounting plate Drill out hole wing /I6 tap hole plate 10-32 bolt Add baisa top block fuselage front wing top rear balsa crossgrain sheeting Tall surfaces Build over plan shown sure use spruce leap ing trailing edges stab Cut tle hole top fuselage sheeting clear x rudder post leave part out adds great deal strength installed fin Glue stab bottom fuse lage making sure properly aligned Glue fin sub-fin place Sand rudder tapered shape suggest cut out lightening holes shown plan tail Blue Max quite long everything rear should kept light possible Finishing touches Final-sand everything cover plane ironon covering materials strongly recom mend MonoKote its strength ease application also make hinges Out same material have never failure Install engine mount nose gear nose gear goes up through mount steering arm just below mount wheel collar either inside top mount hold gear place know someone coil bender strongly recommend use Y6-in wire nose gear heavyduty struts save lot props case bender available %2-in gear will work just fine Install tank run fuel lines through center mount Mount engine 6-32 bolts out mount far enough leave room fuel lines come through Mount rudder elevator servos back under hatch Make sure far enough rearward allow receiver placed just ahead Use cable pushrod go rudder servo nose gear cable housing should firmly glued down over its en tire length prevent flexing throttle servo mounted aileron ser vo tray just ahead F-3 flat floor cable pushrod should used throttle also Battery location fuselage depends needed balancing purposes normally under wing right behind tank aileron servo mounted wing rails installed earlier Use sheet metal screws attaching servo con ventional manner CG should fall somewhere between limits shown plan best way check CG place fingers under spars both sides wing slide fingers out equally both sides limits method shown wing plan Desired control throws starting ailerons Y6 up down elevator own rudder 1A left right throws will give easy-to-fly responsive airplane After some test flights throws can adjusted whatever flier feels comfortable first flight open throttle holding slight back pressure elevator will lift off ground about 30 40 feet Let clImb out can get feel way flies its up Blue Max very versatile airplane Continued page 120 February 1 98511 7 Safety/Preston Continued page 20 especially tough events require tight maneuvering quick landings feel Blue Max superior almost event has ever flown inun til gets windy wind starts blow heavier 60-size planes have definite advantage scaled-up 60 ver sion plane might future proj ect cure problem am sure will disappointed Blue Max II Anyone has ever flown has fallen love its fly ing characteristics Have fun Fun/Winter Continued page 33 weight etc have long run-time overall duration probably will greater highest altitude will reached fly less think best-rateof-climb angle assumes means less dead weight hang prop due climb better duration plane merely device keep power system off ground until energy consumed think true Rubber Scale Indoor models applies everywhere concern have power burn tank full gas dont have power burn small-engined powered Sailplane Electric Gas angle climb frustratingly shallow very long run gets plane up launch height easily Sailplane stalls such shallow angle tiny prop just soon puttoo much dead weightupon hanging li-in drill sure throws chips disk area prop comes mind does 1/16-in drill air blast 12- 13-in folder times greater screaming 6-4 tiny prop stalls hold same nose-up steadily can dethermalize way groundat full throttle Textbook experts frothing know mans meat anothers poison John Worth AMA executive director now has LeCrate insists trying possible approach no matter unlikely Hes flying poor thing death though seems worse wear Gordon Burford Australia gave him l0-in-dia Pylon prop Yes Pylon pitch unknown Its strange club prop blades squared off outside hub lots blade area high pitch near hub almost flat near tips Thin blades sharp edges would pay dime Electrics John added 3 mm best time itand six 12 Ah cells insted seven just 2-to-i reduction switched 800 mAb cells Duration virtually same around 13 minutes could get pinpoint height once flight used speed controller could regain height second time 800s John gets pin point height second time same flight using controller extended cruise shallow climb Evans Wing modification Bill Evans modification own Simitar Deuce extremely happy airplane six flights Don Srull testing fiddling sticks along way find wing have few special traits trail-dragger ship starts roll full up hold full up way until 5 6 ft high runs along snappily two-thirds throttle steering rudder find best Using aileron trim soaring circles engine idling dead eventually model beings wind down occasional stick needed have 2A dihedral tip 5-ft wing trim circle rudder alone maintains altitude add touch inside aileron another rudder aileron rudder end up almost flat tight hands-off circles pushed extreme crossed controls eventually see what looks like rudder reversal comes out circle no needs turn dime still-lower vertical tail perhaps dorsal fin would cure truly no need speed range wide ship obviously highly efficient lightened structure electric power would make absolute world-beater grossly overpowered 19 should 120Model Aviation Blue Max/Allen Continued page 117 Great Lakes Model Company 517876-7825 100 Michigan Ave AuGres MI 48703 Send SASE flincher Deuler Inquiries Welcome List Price $28500 Factory Direct $22800 Michiganresidontsadd4%salestax VINTASI R-C PLAN CONSOLIDATED PlY-BA CATALINA 9FT WINGSPAN ALL RIASS FULL FORMERS SHOWN ON PLANS11 PLASTIC ENGCOWLS PR CLEAR GUN BLiSTERS $660 PR 4 LARGE PLAN SHEETS Plans $1695 GFT WING SPAN MODEL PSY-SA ENGINE COWLS $ 650 PR Plans $1295 GUN fiLISTERS $ 430 PR ADD S2O POSTAGE CATALOGOVER 50 PLANS tiDo DEALERS WRITE WORLD 0 WWE SID MORGAN 13157 ORMONDBELLEVILLE MICH48111 USA AT-6 SNJ-HARVARD 63375 Wingspan ngine s Complete
Edition: Model Aviation - 1985/02
Page Numbers: 22, 23, 24, 25, 26, 27, 28, 29, 117, 120
NO OCR TEXT NO OCR TEXT completed uncovered model Thisylew plus plansand cutawaydrawing should make everything cleat Among 40-size engines used have K&B HP 05 Nose gear installation deta picture DuBrosteering arm us ed Engine mounting simple used Blue Max prototypes have powered K&B 40 HP 40 OS 40 engines have worked well HP OS seemed give better vertical performance Before go construction plane let say highperformance talk does mean Blue Max hard fly contrary plane very easy fly would hesitate recommend flier very little time flying aileron trainer thing would have keep control throws far maximum have never able find single bad trait Blue Max proto types have five including shown pictures 24Model Aviation build Blue Max much fun can have h can fun-fly events right plane Construction First make yoi Cut out major parts start gluing building pro go much easier Left Aileron installation author uses ball link connectors Top Right Take off hatch back what servos rudder elevator Above Right wing removed fuel tank battery throttle Left Tail surfaces stralgnuorwara simple Adjust control throws according text start wnn tnei ever setting feels comfortable Right dont need cut lightening holes wing ribs WN N FiT -CIIP OFF N T14E AV/k-I S WUT FAWCVS IM 51 - -WAZELS 4TI- CUB -CHUCI OFF IN CHINA! -ME-IMIN sI-IW III / FLY 1/16 CAP STRIPS OPND BOTTOM 6 I/32LITE PLY DCIJBLER UPTO NOSE REIN F jLOCK SERVO ROD TO NOSE WHEEL 7I/4XI/2LEFIN T E POST AND FIN MOUNT 1/4 SHEET TAPERED RUDDER 3/16 X 1/4 SPRUCE LE AND SPAR I/32LITE PLY AFT DOUBLER 3/16 SPRUCE ELEV JOINER 3/16 SHEET ELEVATcRS 1/4 SHEET VENTRAL WITH I/16SKID I/B SHEEr BALSA SIDES I/4 FRAMES 1/8 SHEET BALSA lOP/BOTTOM CRCSGRAIN I/B LITE-PLY SPAR _____________ REINFORCING C/S ONLY I/B LITE PLY RIB REINF OVER 1/4 DOWEL HOLD DOWNN 1/4 DOWEL INTO I/B PLYWDOD BLOCK I/BBALSA HATCH TRIANGLE STOCK 1/4 PLY FIREWALL KM 40 MOUNT DU BRO STEER ARM 2 WHEEL ON 3/16 3/16 STEERABLE NOSE GEAR 7 / / / 2 I/2WHEELS ON DUBRO /AXLES 1/16 PLYWOOD10 32 LE JOINERNYLON BOLTS SIG SKYBOLT L GEAR ON I/8FLY MOUNT THRU V2SOSPRUCE I/16LITE SHEET ALLLEAND CS 3/16 X 1/4 SPRUCE SPARS 7 I/8LITEpLY HAICH IIA I/B SHEET WEBS 1/850 SPRUCE L E 1/32 PLYDO FUSELA3E DOUBLER I/16x TE SHEET TOP AND BOTTOM 1/4 X 3/8 AILERON SPAR 3/8x 11/2 AILERO~J 7 7 1/32 PLY TIP PLATES 3/32Th1B5 ALL SAME SHAPE Left left wing panel under construction Note marks top ribs right panel should built same place atop plans rib marking bottom Right Left rightwlng panels assembled center rib Has unique construction Left Assembled wing balsa sheeting ready glued leading edge wrapped around top bottom piece Right sheeting has installed right wing panel hasnt yet trimmed center rib Photos author ribs can made either two ways first make stack blank balsa pieces cut ribs same time jigsaw band saw second method make rib template plywood metal cut out rib separately leaving little extra around edges stack ribs pin together can sanded final shape After ribs cut out sanded use felt-tip pen mark top side ribs still stacked done make sure airfoil same along wing though airfoil supposed symmetrical its very hard make perfect ribs side usually little different other lightening holes optional cut out because look good under transparent MonoKote rest parts should cut out match plans Wing Construction little different sport planes build Start pinning down bottom trailing edge TE sheet over left-hand portion plans shape 3/ x / TE piece match taper back ribs glue top sheet already pinned down Next put piece /16 scrap plans 2 in front TE sheet support front ribs sit properly Now glue %2 ribs half wing keeping square work sur face must sure ribs glued down marked side up Add sq spruce leading edge LE strip top bottom Y16 x / spruce spars sure leave little extra length center can later cut exact length needed perfect fit center rib right panel dry panel can re moved plan right panel can built over same area difference right panel should assembled marked side ribs down Glue balsa shear webs both panels center rib should now construct ed first gluing Lite Ply doublers both sides sure grain direction shown plans Cut center 26Model Aviation XII ietropfliestfle aL rna I-un ny VUI1I5 wiui EIIUUUUO IJfl Max series its best performance winds light-to-medluim 1/8 LITE PLY1/4 DOWEL1/8 SO SPRUCELEADING EDGE SHEETING IS ONE -I/IS LIGHT BALSACG RANGE 3/3D BALSA EDGE DREETING _______________OPTIONALI/IR 3/B BALSA CAPSYRIPS I/4 3/B BALSABALSA AILERON1/4 BALSA TRAILING EDGE 1/83/18 ALGA TIP PLATES LAMINATEDPLYWOOD2ITYPICAL WING RIB FROM I/3D PLYWLOD AND 1/16 BALSA-PLY TOWARDS THE INSIDESPAR JOINER ENTER RIBTYPICAL CENTER RIBI/43/IB DWBLERSPRUCE 1/32 PLYWOOD DOUBLERS WING TIP PLATE7 FUSELAGE OUBLER 3/IRI/4ELEVATOR 1/4 BALSA SHEET 1/4 BALSA________________ I/O TRI S OUTLINE OF STOCKFUSELAGE SIDES SIDE NOT SHOWN FIN INCIDENCE1/B BALSA SHEETFOR CLARITY OR OS-SI OSITIVESIDES TOPABOTTOM [v32][b-1-10-1-10]]ItBEVEL V/i 7XIIl/Al ON RAFTL/-1Il//Il DL 4 TANK- - 1/32 PLYI IyyAIl//Il RECEIVER -DOUBLERR(JDDR CO RANGEI/O TRI-STOCI LEVATOR AND RUDDER rII lii F4 THROTTLE ERVO AREAISPRUCE -2BATTERY AREAAREA O CIS M-40IF-IEND OFDOUBLER __CU MOUNTI/DSG SPRUCE WITH I/BPLYWOODSIDETOP AND BOTTOM _F2 TAPPED HOLES GEAR MOUNT FUSELAGESHEETING IS CROSS-- STEERINGVIEW ARM 4S35S0 0/IS NOSE GEAR FON COMPlUSE 010 SKYBOLT GEARDESIRES SHAPE OF SKYBOLTMA GABA GA SPORT F LY INS CON SIMILAR MOUNTED 5/52 IWITH 10-32 NYLON BOLTS MODEL AV ATION I/B LITE PLYSKYBOLT GEAR 2 WHEEL j 2-1/4 WHEELS ONORIGINAL SHAPE BANNER OR OD-BROIIDES GNED BY 3 M ALLEN JR AXLES0 2 ELAGE HATCH LANDING GEAR PATTERNRAC NG BY JOE DEMARCO 5____________________________ BKTS RESERVED FULL-SIZE PLANS AVAILABLESEE PAGE 164 rib shown dotted lines plan A-in-wide section cut out clear / ply spar joiner Glue center rib back together spar joiner place section cut out LE joiner should slid slot front center rib glued place assembly shown photos wing halves now glued together center rib Start test-fitting three pieces together cutting spars LE necessary over plan make sure sweepback set proper angle satisfied fit line up wing over plan prop up level Measure distance center LE table same thing TE wing should set up measurements same both right left panel glue together center rib Sheet leading edge done side time Start edge-gluing three /16 x 3 x 36 sheets together edgewise making sheet 9 36 Two sheets size required side Get bowl hot water small sponge wet outside sheets Wipe hot water center third sheet lengthwise let soak few minutes sheet soaking spread glue structure front spar sheet will stick thick cyanoacrylate CyA glues should used operation Stand wing up TE locate center sheet wet side out over LE Roll sheeting down onto both top bottom same time rub don glue can set dry trim excess sheet off around edges center rib other half wing done same manner trimmed center rib putting sheeting After both halves sheeted check warps arent great no problem sheeting warped side must split placing straightedge bottom sheeting cutting along center tip razor blade X-Acto knife twist wing straight reglue sheeting cut Use regular CyA glue process will easily remove twists panels providing cap strips center sheeting have installed top center sheeting cap strips now added Flip wing over bottom facing cut center rib clear aileron servo Add spruce servo rails shown pictures Scraps wing spar wood good purpose Glue bottom center sheeting cap strips cut hole aileron servo sheeting next step install aileron horns center TE pieces suggest using Du-Bro similar aileron horns Make TE pieces out sheet balsa x 1 TE stock can find size trailing edge stock can make things much easier Groove front pieces clear aileron horns glue place over horns careful get glue wire will bind up link age Make ailerons either sheet balsa x 1% TE stock Add A2 ply wing bolt doublers top bottom shown plan tips now made laminating A2 ply /16 balsa should glued until wing tips have covered glued plywood facing inside Fuselage Start gluing A2 ply dou blers front rear sure make right left side Make formers sticks shown plan F-2 should cut out shown dotted lines plan depending what tank intend use tank Kraft Slimline 4 oz what use dont need cut former Please note top piece F-2 made sq spruce helps support Left Bottom view wing center section after leading edge center sheeting have added Note servo cutout cen ter rib rails have added Right Center section now compiete hoie servo aileron horns installed Left Fuselage doublers being glued place Note marks behind doublersto avoid building two side Right ship has doublers rear weilwhich author notes very important ldeaily Blue Max II should come out weighing about 3 lb 28Model Aviation center rib aasemiy nas completed sparand leading edge joiners have glued piace have doublers loads wing mount side laying flat table doublers up glue Formers F-2 F-3 place using triangle make sure square Glue other side top two formers Drill firewall engine mount fuel lines pushrods Glue firewall front glue A-in triangle stock behind Place assembly over top view plan pin down Pull rear fuselage together glue sure straight Glue Former F-4 ply landing gear mounting plate should glued bottom x spruce glued top should now glue Lite Ply hatch frame Put bottom cross-grain sheeting A-in triangle around gear mount shown plan Drill tap landing gear mount 10-32 nylon bolts planes have used Sig Skybolt landing gearrebent desired shape front view proper shape shown plan dotted lines shown shape Skybolt gear buy am sure aluminum landing gears will work fine particular gear inexpensive readily available Place hatch position glue balsa fillers both sides Drill hatch mount wood screws outer Ny-rod tubes rudder Continued page 117 February 198529 Left Glue formers TO 0fl sloe using triangle make sure theyre square dry glue amer sloe picture Right firewall complete blind mounting nuts glued place balsa triangle stock added corners strength ii Left Dowel wing through /a plywood plate holds wing front securely Install plywood plate wing place good fit Right 1/4 plywood rear mounting plate being installed wax paper between wing bottom fuselage eft landing gear installed 10-32 nylon bolts Author uses Sig Skybolt landing gear reshaped per plans Right Jote vertical fin post embedded rear fuselage post greatly strengthens fin Installation ltS sturdy model times control rudder flyaways common Todays models neutral stability superior aerobatic performance generally bite dust seconds after loss radio signal As Sam pointed out devices cur rently market will retard throttle event interference loss transmitter signalbut require power on-board battery pack order function readers have simple solution close engine throttle upon loss power onboard battery pack please drop line Meanwhile please make sure airborne battery packs wont ejected takeoff could result just embaTrassment Have safe month John Preston 12235 Tilden wood Dr Rockville MD 20852 Blue Max/Allen Continued page 29 elevator should glued now Remem ber have come up hatch area Make sure exit fuse lage sides far enough forward interfere rudder post Mount completed wing fuse lage. First open hole dowel will go center rib test-fit dowel glue Line up wing fuselage make sure centered square dowel temporarily place slide ply wing mount place dowel glue front F-2 move wing until glue dry triangle stock can now added front wing mount wing still place slide piece wax paper between wing TE fuselage rear mounting plate glued Use 5-mm epoxy glue ply plate place under wing Hold firmly against bottom wing until glue has set Remove wax paper double check make sure wing straight Now drill down through wing doublers through mounting plate Drill out hole wing /I6 tap hole plate 10-32 bolt Add baisa top block fuselage front wing top rear balsa crossgrain sheeting Tall surfaces Build over plan shown sure use spruce leap ing trailing edges stab Cut tle hole top fuselage sheeting clear x rudder post leave part out adds great deal strength installed fin Glue stab bottom fuse lage making sure properly aligned Glue fin sub-fin place Sand rudder tapered shape suggest cut out lightening holes shown plan tail Blue Max quite long everything rear should kept light possible Finishing touches Final-sand everything cover plane ironon covering materials strongly recom mend MonoKote its strength ease application also make hinges Out same material have never failure Install engine mount nose gear nose gear goes up through mount steering arm just below mount wheel collar either inside top mount hold gear place know someone coil bender strongly recommend use Y6-in wire nose gear heavyduty struts save lot props case bender available %2-in gear will work just fine Install tank run fuel lines through center mount Mount engine 6-32 bolts out mount far enough leave room fuel lines come through Mount rudder elevator servos back under hatch Make sure far enough rearward allow receiver placed just ahead Use cable pushrod go rudder servo nose gear cable housing should firmly glued down over its en tire length prevent flexing throttle servo mounted aileron ser vo tray just ahead F-3 flat floor cable pushrod should used throttle also Battery location fuselage depends needed balancing purposes normally under wing right behind tank aileron servo mounted wing rails installed earlier Use sheet metal screws attaching servo con ventional manner CG should fall somewhere between limits shown plan best way check CG place fingers under spars both sides wing slide fingers out equally both sides limits method shown wing plan Desired control throws starting ailerons Y6 up down elevator own rudder 1A left right throws will give easy-to-fly responsive airplane After some test flights throws can adjusted whatever flier feels comfortable first flight open throttle holding slight back pressure elevator will lift off ground about 30 40 feet Let clImb out can get feel way flies its up Blue Max very versatile airplane Continued page 120 February 1 98511 7 Safety/Preston Continued page 20 especially tough events require tight maneuvering quick landings feel Blue Max superior almost event has ever flown inun til gets windy wind starts blow heavier 60-size planes have definite advantage scaled-up 60 ver sion plane might future proj ect cure problem am sure will disappointed Blue Max II Anyone has ever flown has fallen love its fly ing characteristics Have fun Fun/Winter Continued page 33 weight etc have long run-time overall duration probably will greater highest altitude will reached fly less think best-rateof-climb angle assumes means less dead weight hang prop due climb better duration plane merely device keep power system off ground until energy consumed think true Rubber Scale Indoor models applies everywhere concern have power burn tank full gas dont have power burn small-engined powered Sailplane Electric Gas angle climb frustratingly shallow very long run gets plane up launch height easily Sailplane stalls such shallow angle tiny prop just soon puttoo much dead weightupon hanging li-in drill sure throws chips disk area prop comes mind does 1/16-in drill air blast 12- 13-in folder times greater screaming 6-4 tiny prop stalls hold same nose-up steadily can dethermalize way groundat full throttle Textbook experts frothing know mans meat anothers poison John Worth AMA executive director now has LeCrate insists trying possible approach no matter unlikely Hes flying poor thing death though seems worse wear Gordon Burford Australia gave him l0-in-dia Pylon prop Yes Pylon pitch unknown Its strange club prop blades squared off outside hub lots blade area high pitch near hub almost flat near tips Thin blades sharp edges would pay dime Electrics John added 3 mm best time itand six 12 Ah cells insted seven just 2-to-i reduction switched 800 mAb cells Duration virtually same around 13 minutes could get pinpoint height once flight used speed controller could regain height second time 800s John gets pin point height second time same flight using controller extended cruise shallow climb Evans Wing modification Bill Evans modification own Simitar Deuce extremely happy airplane six flights Don Srull testing fiddling sticks along way find wing have few special traits trail-dragger ship starts roll full up hold full up way until 5 6 ft high runs along snappily two-thirds throttle steering rudder find best Using aileron trim soaring circles engine idling dead eventually model beings wind down occasional stick needed have 2A dihedral tip 5-ft wing trim circle rudder alone maintains altitude add touch inside aileron another rudder aileron rudder end up almost flat tight hands-off circles pushed extreme crossed controls eventually see what looks like rudder reversal comes out circle no needs turn dime still-lower vertical tail perhaps dorsal fin would cure truly no need speed range wide ship obviously highly efficient lightened structure electric power would make absolute world-beater grossly overpowered 19 should 120Model Aviation Blue Max/Allen Continued page 117 Great Lakes Model Company 517876-7825 100 Michigan Ave AuGres MI 48703 Send SASE flincher Deuler Inquiries Welcome List Price $28500 Factory Direct $22800 Michiganresidontsadd4%salestax VINTASI R-C PLAN CONSOLIDATED PlY-BA CATALINA 9FT WINGSPAN ALL RIASS FULL FORMERS SHOWN ON PLANS11 PLASTIC ENGCOWLS PR CLEAR GUN BLiSTERS $660 PR 4 LARGE PLAN SHEETS Plans $1695 GFT WING SPAN MODEL PSY-SA ENGINE COWLS $ 650 PR Plans $1295 GUN fiLISTERS $ 430 PR ADD S2O POSTAGE CATALOGOVER 50 PLANS tiDo DEALERS WRITE WORLD 0 WWE SID MORGAN 13157 ORMONDBELLEVILLE MICH48111 USA AT-6 SNJ-HARVARD 63375 Wingspan ngine s Complete
Edition: Model Aviation - 1985/02
Page Numbers: 22, 23, 24, 25, 26, 27, 28, 29, 117, 120
NO OCR TEXT NO OCR TEXT completed uncovered model Thisylew plus plansand cutawaydrawing should make everything cleat Among 40-size engines used have K&B HP 05 Nose gear installation deta picture DuBrosteering arm us ed Engine mounting simple used Blue Max prototypes have powered K&B 40 HP 40 OS 40 engines have worked well HP OS seemed give better vertical performance Before go construction plane let say highperformance talk does mean Blue Max hard fly contrary plane very easy fly would hesitate recommend flier very little time flying aileron trainer thing would have keep control throws far maximum have never able find single bad trait Blue Max proto types have five including shown pictures 24Model Aviation build Blue Max much fun can have h can fun-fly events right plane Construction First make yoi Cut out major parts start gluing building pro go much easier Left Aileron installation author uses ball link connectors Top Right Take off hatch back what servos rudder elevator Above Right wing removed fuel tank battery throttle Left Tail surfaces stralgnuorwara simple Adjust control throws according text start wnn tnei ever setting feels comfortable Right dont need cut lightening holes wing ribs WN N FiT -CIIP OFF N T14E AV/k-I S WUT FAWCVS IM 51 - -WAZELS 4TI- CUB -CHUCI OFF IN CHINA! -ME-IMIN sI-IW III / FLY 1/16 CAP STRIPS OPND BOTTOM 6 I/32LITE PLY DCIJBLER UPTO NOSE REIN F jLOCK SERVO ROD TO NOSE WHEEL 7I/4XI/2LEFIN T E POST AND FIN MOUNT 1/4 SHEET TAPERED RUDDER 3/16 X 1/4 SPRUCE LE AND SPAR I/32LITE PLY AFT DOUBLER 3/16 SPRUCE ELEV JOINER 3/16 SHEET ELEVATcRS 1/4 SHEET VENTRAL WITH I/16SKID I/B SHEEr BALSA SIDES I/4 FRAMES 1/8 SHEET BALSA lOP/BOTTOM CRCSGRAIN I/B LITE-PLY SPAR _____________ REINFORCING C/S ONLY I/B LITE PLY RIB REINF OVER 1/4 DOWEL HOLD DOWNN 1/4 DOWEL INTO I/B PLYWDOD BLOCK I/BBALSA HATCH TRIANGLE STOCK 1/4 PLY FIREWALL KM 40 MOUNT DU BRO STEER ARM 2 WHEEL ON 3/16 3/16 STEERABLE NOSE GEAR 7 / / / 2 I/2WHEELS ON DUBRO /AXLES 1/16 PLYWOOD10 32 LE JOINERNYLON BOLTS SIG SKYBOLT L GEAR ON I/8FLY MOUNT THRU V2SOSPRUCE I/16LITE SHEET ALLLEAND CS 3/16 X 1/4 SPRUCE SPARS 7 I/8LITEpLY HAICH IIA I/B SHEET WEBS 1/850 SPRUCE L E 1/32 PLYDO FUSELA3E DOUBLER I/16x TE SHEET TOP AND BOTTOM 1/4 X 3/8 AILERON SPAR 3/8x 11/2 AILERO~J 7 7 1/32 PLY TIP PLATES 3/32Th1B5 ALL SAME SHAPE Left left wing panel under construction Note marks top ribs right panel should built same place atop plans rib marking bottom Right Left rightwlng panels assembled center rib Has unique construction Left Assembled wing balsa sheeting ready glued leading edge wrapped around top bottom piece Right sheeting has installed right wing panel hasnt yet trimmed center rib Photos author ribs can made either two ways first make stack blank balsa pieces cut ribs same time jigsaw band saw second method make rib template plywood metal cut out rib separately leaving little extra around edges stack ribs pin together can sanded final shape After ribs cut out sanded use felt-tip pen mark top side ribs still stacked done make sure airfoil same along wing though airfoil supposed symmetrical its very hard make perfect ribs side usually little different other lightening holes optional cut out because look good under transparent MonoKote rest parts should cut out match plans Wing Construction little different sport planes build Start pinning down bottom trailing edge TE sheet over left-hand portion plans shape 3/ x / TE piece match taper back ribs glue top sheet already pinned down Next put piece /16 scrap plans 2 in front TE sheet support front ribs sit properly Now glue %2 ribs half wing keeping square work sur face must sure ribs glued down marked side up Add sq spruce leading edge LE strip top bottom Y16 x / spruce spars sure leave little extra length center can later cut exact length needed perfect fit center rib right panel dry panel can re moved plan right panel can built over same area difference right panel should assembled marked side ribs down Glue balsa shear webs both panels center rib should now construct ed first gluing Lite Ply doublers both sides sure grain direction shown plans Cut center 26Model Aviation XII ietropfliestfle aL rna I-un ny VUI1I5 wiui EIIUUUUO IJfl Max series its best performance winds light-to-medluim 1/8 LITE PLY1/4 DOWEL1/8 SO SPRUCELEADING EDGE SHEETING IS ONE -I/IS LIGHT BALSACG RANGE 3/3D BALSA EDGE DREETING _______________OPTIONALI/IR 3/B BALSA CAPSYRIPS I/4 3/B BALSABALSA AILERON1/4 BALSA TRAILING EDGE 1/83/18 ALGA TIP PLATES LAMINATEDPLYWOOD2ITYPICAL WING RIB FROM I/3D PLYWLOD AND 1/16 BALSA-PLY TOWARDS THE INSIDESPAR JOINER ENTER RIBTYPICAL CENTER RIBI/43/IB DWBLERSPRUCE 1/32 PLYWOOD DOUBLERS WING TIP PLATE7 FUSELAGE OUBLER 3/IRI/4ELEVATOR 1/4 BALSA SHEET 1/4 BALSA________________ I/O TRI S OUTLINE OF STOCKFUSELAGE SIDES SIDE NOT SHOWN FIN INCIDENCE1/B BALSA SHEETFOR CLARITY OR OS-SI OSITIVESIDES TOPABOTTOM [v32][b-1-10-1-10]]ItBEVEL V/i 7XIIl/Al ON RAFTL/-1Il//Il DL 4 TANK- - 1/32 PLYI IyyAIl//Il RECEIVER -DOUBLERR(JDDR CO RANGEI/O TRI-STOCI LEVATOR AND RUDDER rII lii F4 THROTTLE ERVO AREAISPRUCE -2BATTERY AREAAREA O CIS M-40IF-IEND OFDOUBLER __CU MOUNTI/DSG SPRUCE WITH I/BPLYWOODSIDETOP AND BOTTOM _F2 TAPPED HOLES GEAR MOUNT FUSELAGESHEETING IS CROSS-- STEERINGVIEW ARM 4S35S0 0/IS NOSE GEAR FON COMPlUSE 010 SKYBOLT GEARDESIRES SHAPE OF SKYBOLTMA GABA GA SPORT F LY INS CON SIMILAR MOUNTED 5/52 IWITH 10-32 NYLON BOLTS MODEL AV ATION I/B LITE PLYSKYBOLT GEAR 2 WHEEL j 2-1/4 WHEELS ONORIGINAL SHAPE BANNER OR OD-BROIIDES GNED BY 3 M ALLEN JR AXLES0 2 ELAGE HATCH LANDING GEAR PATTERNRAC NG BY JOE DEMARCO 5____________________________ BKTS RESERVED FULL-SIZE PLANS AVAILABLESEE PAGE 164 rib shown dotted lines plan A-in-wide section cut out clear / ply spar joiner Glue center rib back together spar joiner place section cut out LE joiner should slid slot front center rib glued place assembly shown photos wing halves now glued together center rib Start test-fitting three pieces together cutting spars LE necessary over plan make sure sweepback set proper angle satisfied fit line up wing over plan prop up level Measure distance center LE table same thing TE wing should set up measurements same both right left panel glue together center rib Sheet leading edge done side time Start edge-gluing three /16 x 3 x 36 sheets together edgewise making sheet 9 36 Two sheets size required side Get bowl hot water small sponge wet outside sheets Wipe hot water center third sheet lengthwise let soak few minutes sheet soaking spread glue structure front spar sheet will stick thick cyanoacrylate CyA glues should used operation Stand wing up TE locate center sheet wet side out over LE Roll sheeting down onto both top bottom same time rub don glue can set dry trim excess sheet off around edges center rib other half wing done same manner trimmed center rib putting sheeting After both halves sheeted check warps arent great no problem sheeting warped side must split placing straightedge bottom sheeting cutting along center tip razor blade X-Acto knife twist wing straight reglue sheeting cut Use regular CyA glue process will easily remove twists panels providing cap strips center sheeting have installed top center sheeting cap strips now added Flip wing over bottom facing cut center rib clear aileron servo Add spruce servo rails shown pictures Scraps wing spar wood good purpose Glue bottom center sheeting cap strips cut hole aileron servo sheeting next step install aileron horns center TE pieces suggest using Du-Bro similar aileron horns Make TE pieces out sheet balsa x 1 TE stock can find size trailing edge stock can make things much easier Groove front pieces clear aileron horns glue place over horns careful get glue wire will bind up link age Make ailerons either sheet balsa x 1% TE stock Add A2 ply wing bolt doublers top bottom shown plan tips now made laminating A2 ply /16 balsa should glued until wing tips have covered glued plywood facing inside Fuselage Start gluing A2 ply dou blers front rear sure make right left side Make formers sticks shown plan F-2 should cut out shown dotted lines plan depending what tank intend use tank Kraft Slimline 4 oz what use dont need cut former Please note top piece F-2 made sq spruce helps support Left Bottom view wing center section after leading edge center sheeting have added Note servo cutout cen ter rib rails have added Right Center section now compiete hoie servo aileron horns installed Left Fuselage doublers being glued place Note marks behind doublersto avoid building two side Right ship has doublers rear weilwhich author notes very important ldeaily Blue Max II should come out weighing about 3 lb 28Model Aviation center rib aasemiy nas completed sparand leading edge joiners have glued piace have doublers loads wing mount side laying flat table doublers up glue Formers F-2 F-3 place using triangle make sure square Glue other side top two formers Drill firewall engine mount fuel lines pushrods Glue firewall front glue A-in triangle stock behind Place assembly over top view plan pin down Pull rear fuselage together glue sure straight Glue Former F-4 ply landing gear mounting plate should glued bottom x spruce glued top should now glue Lite Ply hatch frame Put bottom cross-grain sheeting A-in triangle around gear mount shown plan Drill tap landing gear mount 10-32 nylon bolts planes have used Sig Skybolt landing gearrebent desired shape front view proper shape shown plan dotted lines shown shape Skybolt gear buy am sure aluminum landing gears will work fine particular gear inexpensive readily available Place hatch position glue balsa fillers both sides Drill hatch mount wood screws outer Ny-rod tubes rudder Continued page 117 February 198529 Left Glue formers TO 0fl sloe using triangle make sure theyre square dry glue amer sloe picture Right firewall complete blind mounting nuts glued place balsa triangle stock added corners strength ii Left Dowel wing through /a plywood plate holds wing front securely Install plywood plate wing place good fit Right 1/4 plywood rear mounting plate being installed wax paper between wing bottom fuselage eft landing gear installed 10-32 nylon bolts Author uses Sig Skybolt landing gear reshaped per plans Right Jote vertical fin post embedded rear fuselage post greatly strengthens fin Installation ltS sturdy model times control rudder flyaways common Todays models neutral stability superior aerobatic performance generally bite dust seconds after loss radio signal As Sam pointed out devices cur rently market will retard throttle event interference loss transmitter signalbut require power on-board battery pack order function readers have simple solution close engine throttle upon loss power onboard battery pack please drop line Meanwhile please make sure airborne battery packs wont ejected takeoff could result just embaTrassment Have safe month John Preston 12235 Tilden wood Dr Rockville MD 20852 Blue Max/Allen Continued page 29 elevator should glued now Remem ber have come up hatch area Make sure exit fuse lage sides far enough forward interfere rudder post Mount completed wing fuse lage. First open hole dowel will go center rib test-fit dowel glue Line up wing fuselage make sure centered square dowel temporarily place slide ply wing mount place dowel glue front F-2 move wing until glue dry triangle stock can now added front wing mount wing still place slide piece wax paper between wing TE fuselage rear mounting plate glued Use 5-mm epoxy glue ply plate place under wing Hold firmly against bottom wing until glue has set Remove wax paper double check make sure wing straight Now drill down through wing doublers through mounting plate Drill out hole wing /I6 tap hole plate 10-32 bolt Add baisa top block fuselage front wing top rear balsa crossgrain sheeting Tall surfaces Build over plan shown sure use spruce leap ing trailing edges stab Cut tle hole top fuselage sheeting clear x rudder post leave part out adds great deal strength installed fin Glue stab bottom fuse lage making sure properly aligned Glue fin sub-fin place Sand rudder tapered shape suggest cut out lightening holes shown plan tail Blue Max quite long everything rear should kept light possible Finishing touches Final-sand everything cover plane ironon covering materials strongly recom mend MonoKote its strength ease application also make hinges Out same material have never failure Install engine mount nose gear nose gear goes up through mount steering arm just below mount wheel collar either inside top mount hold gear place know someone coil bender strongly recommend use Y6-in wire nose gear heavyduty struts save lot props case bender available %2-in gear will work just fine Install tank run fuel lines through center mount Mount engine 6-32 bolts out mount far enough leave room fuel lines come through Mount rudder elevator servos back under hatch Make sure far enough rearward allow receiver placed just ahead Use cable pushrod go rudder servo nose gear cable housing should firmly glued down over its en tire length prevent flexing throttle servo mounted aileron ser vo tray just ahead F-3 flat floor cable pushrod should used throttle also Battery location fuselage depends needed balancing purposes normally under wing right behind tank aileron servo mounted wing rails installed earlier Use sheet metal screws attaching servo con ventional manner CG should fall somewhere between limits shown plan best way check CG place fingers under spars both sides wing slide fingers out equally both sides limits method shown wing plan Desired control throws starting ailerons Y6 up down elevator own rudder 1A left right throws will give easy-to-fly responsive airplane After some test flights throws can adjusted whatever flier feels comfortable first flight open throttle holding slight back pressure elevator will lift off ground about 30 40 feet Let clImb out can get feel way flies its up Blue Max very versatile airplane Continued page 120 February 1 98511 7 Safety/Preston Continued page 20 especially tough events require tight maneuvering quick landings feel Blue Max superior almost event has ever flown inun til gets windy wind starts blow heavier 60-size planes have definite advantage scaled-up 60 ver sion plane might future proj ect cure problem am sure will disappointed Blue Max II Anyone has ever flown has fallen love its fly ing characteristics Have fun Fun/Winter Continued page 33 weight etc have long run-time overall duration probably will greater highest altitude will reached fly less think best-rateof-climb angle assumes means less dead weight hang prop due climb better duration plane merely device keep power system off ground until energy consumed think true Rubber Scale Indoor models applies everywhere concern have power burn tank full gas dont have power burn small-engined powered Sailplane Electric Gas angle climb frustratingly shallow very long run gets plane up launch height easily Sailplane stalls such shallow angle tiny prop just soon puttoo much dead weightupon hanging li-in drill sure throws chips disk area prop comes mind does 1/16-in drill air blast 12- 13-in folder times greater screaming 6-4 tiny prop stalls hold same nose-up steadily can dethermalize way groundat full throttle Textbook experts frothing know mans meat anothers poison John Worth AMA executive director now has LeCrate insists trying possible approach no matter unlikely Hes flying poor thing death though seems worse wear Gordon Burford Australia gave him l0-in-dia Pylon prop Yes Pylon pitch unknown Its strange club prop blades squared off outside hub lots blade area high pitch near hub almost flat near tips Thin blades sharp edges would pay dime Electrics John added 3 mm best time itand six 12 Ah cells insted seven just 2-to-i reduction switched 800 mAb cells Duration virtually same around 13 minutes could get pinpoint height once flight used speed controller could regain height second time 800s John gets pin point height second time same flight using controller extended cruise shallow climb Evans Wing modification Bill Evans modification own Simitar Deuce extremely happy airplane six flights Don Srull testing fiddling sticks along way find wing have few special traits trail-dragger ship starts roll full up hold full up way until 5 6 ft high runs along snappily two-thirds throttle steering rudder find best Using aileron trim soaring circles engine idling dead eventually model beings wind down occasional stick needed have 2A dihedral tip 5-ft wing trim circle rudder alone maintains altitude add touch inside aileron another rudder aileron rudder end up almost flat tight hands-off circles pushed extreme crossed controls eventually see what looks like rudder reversal comes out circle no needs turn dime still-lower vertical tail perhaps dorsal fin would cure truly no need speed range wide ship obviously highly efficient lightened structure electric power would make absolute world-beater grossly overpowered 19 should 120Model Aviation Blue Max/Allen Continued page 117 Great Lakes Model Company 517876-7825 100 Michigan Ave AuGres MI 48703 Send SASE flincher Deuler Inquiries Welcome List Price $28500 Factory Direct $22800 Michiganresidontsadd4%salestax VINTASI R-C PLAN CONSOLIDATED PlY-BA CATALINA 9FT WINGSPAN ALL RIASS FULL FORMERS SHOWN ON PLANS11 PLASTIC ENGCOWLS PR CLEAR GUN BLiSTERS $660 PR 4 LARGE PLAN SHEETS Plans $1695 GFT WING SPAN MODEL PSY-SA ENGINE COWLS $ 650 PR Plans $1295 GUN fiLISTERS $ 430 PR ADD S2O POSTAGE CATALOGOVER 50 PLANS tiDo DEALERS WRITE WORLD 0 WWE SID MORGAN 13157 ORMONDBELLEVILLE MICH48111 USA AT-6 SNJ-HARVARD 63375 Wingspan ngine s Complete