Straight lines simple structure commend 4 Bits builders whod like real going machine pylon has added advantage being good sport flier between races 14 Model Aviation four bits Designed Dave Jackson Text Bill Cranston ONE OF TI-IF popular fastest growing competitive events make RC scene long time Quickie 500 racing Basically Quickie 500 racing 500 sq 40-sized front-rotor en gine aircraft objective Quickie 500 racing provide closed course racing will encourage participation sport novice racing enthusiast lowest cost Racing aircraft lot fun fun shared average RCer Racing need require specialized hard build fly aircraft Racing aircraft will fun event such Quickie 500 provides average RCer oppor tunity Race simple easy build air craft Fly stable docile aircraft can sport flown well raced competitive stock out-ofthe-box 40 FR mill required virtually carveyour-own props mix-your-own blend secret fuel other specialized tech niques Formula boys use Race some assurance youve got just good chance win next RCer perhaps three four differ ent aircraft currently being flown Quickie 500 racing event air craft similar design 4 BITS departure designs 4 BITS shoulder wing 500 sq aircraft designed exclusively Quickie 500 racing Since introduction May 1975 ofthe4 BITS has win ners circle racing contest entered 4 BITS has proven stable competitive Quickie 500 racing air craft currently being flown Between rac ing weekends 4 BITS has doubled sport aircraft flying Fun-Flys just being flown fun flying Stable speed landings almost walk speed beginners experts agree 4 BITS fun aircraft sport flying aircraft Quickie 500 racing IuseIage assembly through step 11 instructions inner lamination sides 1/64 ply Plywood bottom fastened bench small brads Check parts squareness Assembly through step 19 instructions note 1f4 spacer rear locating fuselage exactly over centerline reference drawn board identical bends result both sides Winners 500 Club meet Auxiliary II Phoenix right left Bob Shaw Bill Cranston Mike Cooke Len Spina Three jobs right Quickie 500 and/or sport flying fine airplane 4 Bits Its placed meet entered extremely popularand successfulin Southwest Specifications Fuselage Shoulder wing box type laminated 1/64 ply superior strength rigid engine platform Engine Side mount 0-degree offset thrust Wing 500 sq excluding tips semisymmetrical 0-degree incidence Stab 18% wing area kness 0-degree incidence Weight 3 41/4 Ibs ready-to-fly less fuel Finish N4onoKote Solar Film racing conventional sport flying Construction Start construction studying plans construction steps woods ac cessones hobby shop items use new instant glues Cyanoacrylate such Hot Stuff Zap etc highly recommended except high stress areas Use epoxy glues areas use fast set epoxies particularly firewall area Fast epoxies allow adequate penetration especially joining plywoods Use epoxy glue called construction steps experience has proven necessity laminating 1/64 ply fuselage sides use 3M type 77 equivalent use water-based contact cement Dont additional beefing-up 4 BITS abnormally strong Beefing up will add unnecessary weight no increase strength Fuselage Cut out two fuselage sides /8 balsa sheeting Laminate 1/64 ply using contact cement balsa sides sure make right left side Note ar rows plans indicate fuselage sides bottom etc outlines 2 Mark location bulkhead #1 ply inner side fuselage sides 3 Glue alsa stringers ply side fuse sides Set aside dry 4 Cut out 3/32 ply bottom mark fore-aft center line Also mark location bulkhead #1 5 Cut Out firewall mark January 1976 15 Above Squared fuselage provides ample space ideal radio installation spite slim ness ship Below Neat installation aileron servo Holes nylon bolts Bill Cranston taching rpm side-mounted 40 engine before race racing ship covered two colors Monokote Solar Film Heavier covering can used sport flying Four Bits center line both vertically horizontally 6 Draw least 36 straight reference line work surface 7 Lay bottom 3/32 ply over ref erence line aligning center line ply bottom work surface reference line Using small brads nail ply bottom work surface Leave enough brad ex posed easy removal later 8 Cut out balsa #1 bulkhead sure balsa grain vertical glued ply bottom Glue #1 bulkhead place ply bottom making sure bulkhead square bottom 9 Cut out two /4 X a wingsaddle fuselage spacers Glue lower spacer ply bottom noting location plans Note 4 BITS does use bulkhead location L K 40 $42 /5 01 Si4 2 0 40 ZW40 0 014040 34 o 4140N 01 -J 240 0 auJ002 444 2 N. $4-I 4 0 440240 0 404040I014i40ZWO X404012 40 040 0 2 0 ii II /FX I3 -lit TFL z 2 4 4 4 2 2 0 2 4 F 1 V 0 44 4 4 $4ILI 0 40 0 -0 40 0 + I. 42 U 2 X 00 210 41 z t 0 4 0 I0 0 n01 24 04 40 040 o40 FT ni .440 IL WI -i4ZZZZ i z I 4- 5 4 y 4 44- 0140 16 Model Aviation 02 4040 10 Epoxy glue firewall ply bottom firewall flush front edge ply bottom Using square absolutely certain firewall true center line bottom ply true vertically 11 Cut out ply landing gear block Epoxy glue bottom butting up #1 bulkhead 12 After both firewall landing gear block epoxy has set glue fuse sides ply bottom Use epoxy glue firewall #1 bulkhead sure alsa fuselage stringers snug against ply bottom Use clamps firewall #1 bulkhead locations 13 Glue upper wing-saddle fuselage spacer location spacer will help keep fuselage sides true top 14 After fuselage assembly epoxy has set pull rear fuselage sides using scrap a spacer rear sure fuselage sides centered over work surface ref erence line Note Scrap a should tack glued place vertical fin location 15 Glue upper lower alsa rear fuselage spacers locations indicated plans omit spacers 16 Cut out ly pine front top block epoxy glue block fuselage firewall 17 Cut out hatch balsa Length 4 approximately 3 wide Length important 18 Cut out rear /16 hard balsa top block Balsa grain should crossways fuselage Sand rear edge top block approximately 45 degrees match wing saddle contour 19 Using hatch spacer epoxy glue rear top block #1 bulkhead fuselage sides glue hatch 20 Cut out I/g balsa fuselage rear top sheeting glue fuse 21 Allowing ample time fuselage assembly dry remove hatch pull brads remove assembly work surface 22 Invert fuselage glue tail wheel ply bracket support rear fuselage glue 1/8 balsa bottom sheeting fuse 23 Cut out two pruce hatch hold-down blocks Fit epoxy glue fuselage locations shown plans 24 Drill four s hatch locations shown plans plug holes ls Sand flush Use epoxy glue dowel plugs 25 Tack glue hatch fuselage 26 Sand entire fuselage rounding cor ners no greater ve scrap a rear fuselage until fuselage has sanded 27 Remove hatch epoxy glue alsa corner bracing top bottom firewall Wing 1 Make rib template 1/16 ply Note rib semi-symmetrical Mark bot tom ribs ribs cut out Make 16 1/16 ribs and4 3/32 ribs 2 Cut tape left wing plan right wing plan tape plans building surface wing built piece 3 Using 1/16 X balsa pine make two 25 shims Align rear shims rear spar indicated plans tape shim down 4 Make main spars pruce pine substitute balsa main spars Tape bottom par shim noting rear spar aligns rear shim 5 Assembling ribs over bottom spar glue ribs except two 3/32 center ribs two 1/16 center ribs sure ribs marking down 6 Glue top par ribs 7 Glue trailing edge stock ribs noting trailing-edge joint right wing cut center joint Note trailing edge made purchased pre-cut 1 k 8 Glue alsa sub-leading edge continued page 72 January 1976 17 Wing construction through step 10 wing assembly instruction Because no dihedral wing can assembled piece flat workbench Note ply joiner Completed wing ready tor sanding 0-section leading edge portion yields maximum strength warp resistance trailing edge laminated Note spar webs between inboard ribs Wing assembly through step 14 Note clamping method applying trailing edge sheeting Herd wood placed between clamp jaws balsa Use epoxy glue operation P R 0 D U CT S N C SVILLE ROAD OW GROVE PA 19090 659-3900 De-Lux CHICKEN STICKS last uch class chicken sticks fancy grip plastic tube touch yellow ch better color bloody fingers 6 package $125 shock read back package PROP-bC HI-TORK SPINNER Solve problem prop coming loose Get smoother idle Nylon spinner cone avail able 1/2 134 2 2VA 24 2/4 white black red Hardware kit available 4-24 4-28 6 mm 7 mm threads WANT TO START SOMETHING Hi-Tork Hi-RPM 12-volt starter has taken whole world storm Guaranteed two full years features higher torpue RPMs other starter heavy-duty long-life motor instant strip switch Four Bits continued provide epoxy lock 2 Bending aluminum brackets slightly outward provide snug fit fuselage install dont glue blocks fuselage approximate locations 3 Install wing fuselage taking ex treme care wing alignment Rubberband wing position satisfied alignment mark bottom wing along fuselage sides future reference 4 Through wing hold-down bolt holes mark location wing hold-down blocks fuselage pencil about 2 lead useful 5 Remove wing check marks center wing-hold down blocks Move blocks fuselage until marks centered install wing mark check satisfied mark wing hold-down aluminum bracket locations fuse 6 Remove blocks drill 13/64 tapping hole secure blocks position using epoxy glue fiberglass Fiberglass must used 7 Re-install wing position tap four wing block holes ap Tap through wing bolt holes far pos sible tap remove wing finish tap procedure will help correct misalignment wing bolt holes drilled wing StabilizerVertical Fin Construct stabilizer vertical fin control surfaces dorsal fairings a sheeting shown plans 2 Glue tips stab vertical fin Tack glue rudder elevator sand stab vertical fin shape Note control surfaces tapered StabilizerFin Installation Slide stabilizer cut-out fuse lage Make sure stab centered fuselage Measure stabilizer tips fuselage center-line firewall Mark bottom stabilizer reference 2 Install wing place slide stabilizer place after end fuselage slide forward observing wing-stab rela tionship sure wing/stabilizer appears parallel Sand either cut-out necessary 3 Check stabilizer incidence yard stick placed top stabilizer along side fuselage will line up w lowest portion wing saddle 4 satisfied stabilizer loca tion incidence glue stabilizer place 5 Slide vertical fin place check squareness stabilizer using square glue fin place 6 Glue dorsal fairing vertical fin fuselage fairings stabilizer-fuselage sand Control SurfacesHinging control surfaces should beveled leading edge indicated plans Beveled amount should allow surface move about 30 degrees either side center use living hinges recom mended type hinge will keep hinge gap minimum now allow wide hinge gaps especially aileron elevator Use least four hinges elevator three per aileron two rudder Instant glue makes easy hinge installation Landing Gear Either purchase landing gear pre-formed make template shown plans Secure gear fuselage least two ylon bolts Drill tap fuselage landing gear block Use 2 main gear wheels wheel Engine Mount Fuel Tank Side-mount engine type mounting provides correct carburetor-fuel tank relationship sure check engine offset down-thrust slight amount right-off set two degrees max wont hurt no downth rust Finishing recommended aircraft finish MonoKote Solar Film etc weight consideration type finish will add appreciable weight second ease repair durable also allows complete sealing hingeline gap CG Set CG indicated plans 4 BITS raced allow CG limits vary plus minus htly forward acceptable recommended balance point never 72 Model Aviation GLOW PLUG KLIP . Got Together Now fully assembled convenience unbreakable Glow Plug Klip still carries same unconditional guar antee ever breaks well replace free 39GC Cox Testors other l/2A engines 4OGC 09 80 engines anaaes 01 ola-Time air racing ianaing wing tip 4 Bits rounds pylon Electronic Flight Timer S12SO-hit $17SO-assenbId SKIPPED VIA FIRST CLASS MAIL FULL ONE YEAR GUARANTEE ACTUAL SIZE ONLY II58 TESTED & APPROVED K IRK LAND WA 9E033 cially aft Slide bat tery servos etc fore-afi obtain balance point Remember check CG accessories installed pushrods fuel tank prop etc Control Surface Movements Initially set up surface movements follow ing Elevator Aileron -3/16 up down Rudder % right left Radio Installation Use servo trays possible 4 BITS will accept three KPS-12 type servos mounted side-by-side tray Use aileron servo side mount bracket Wrap battery foam install receiver-servo area use NyRod acceptable rudder pushrod should used elevator sure aileron control horns free after installation wing Some filing wing hold-down blocks may necessary Use flex cable engine throttle hook-up Flying 4 BITS will very re sponsive Set control surface movements suit individual preference never set response allow snap-roll aircraft raced find point increase elevator throw until snap-roll obtained back-off hole control horn general sport flying set control surface movements limited flying ability Always however start out soft controls Youll find 4 BITS fun aircraft youve ever flown racing watch out guys -Korda/Oldenkamp continued page 40 winds down free-wheeling begins particularly shaft gets bent little landing knock vibration sets An easy way cure since nose plug gets lot wear simply cant made lit forever coat fiveminute epoxy slip place pull out let dry doesnt work put piece masking tape top outer joint just after winding point being noseplug should free fall out airplane hits something gets upset upon landing References Balsa plywood spruce music wire rubber strip dowels tubing tissue Lite-Coat dope rubber lubricant etc available directly Sig Manu facturing Co Montezuma Iowa local hobby shops Sandpaper Titebond glue Five-Mm ute Epoxy glue--from variety hardware stores Plastic Propellers Peck-Polymers has some excellent units up 9/2 diameter Peck-Polymers P0 Box 2498 La Mesa Ca 92041 Rubber Winding Hook Jim Crockett Replicas l442 N Fruit Ave Fresno Ca 93728 PermaGloss Coverite may newest revolution covering material Heres unsolicited testimonial editor RC Modeler Mr Don Dewey quote part August 1975 issue .. iron-on plastic fabrics several minor dis advantages Among high gloss plastic look could hidden several coats exhaust residue addition materials have tendency sag during periods extreme humidity changes. d like have next model covered fabric far stronger silk covers up minor surface imperfections actually contains four coats paint realistic painted fabric appearance no plastic sheen will never shatter sag scratch best all have iron sanded framework l find aircraft covered Coverite PermaGloss will have lightest yet strongest coverings can possibly apply addition will have painted fabric appearance would find difficult equal silk dope aircraft particularly strength-to-weight ratio w standpoint realistic appearance strength durability ease repair mention ease application aGloss may newest revolution covering materials C0Vi-i i Chestnut St Phila Pa 19106 U QUE PLANS FOR GAS MODELERS PRICE INCLUDE PATTERNO 42 Eoig P26A $14 . 45 BOio 940-3 P12 $9 0ip OR] $7 47 C Bk P4-E $15 pod XIII $10 47 Oohook F11C-2 $15 l 17 $9 47 CoIC BeIIdie $11 Pp $8 48 GM GlodMbe $10 OHBoo 0 $9 49 SI Koode P017 $10 FBI 2B6C $11 $0 Polith Fl PO $10 rpe 46 Plo] DIII 50, $9 82 Slooo TW SB7 $10 Sop 07F1$11 $7 Co 010 FoIoo $15 54 MoMB-i$14 57 CoSO2C1 Soo $14 57 Boote 0,i0oiI$95B Boejo0B9Boobe$9 6AEGGVBoobeS1260Doog 0-SB00$$12 ___66 Coo 2GSI1ockef5F1 $14 $20 07 Liod Look Siio $12 $94610MOBE 4B Mc 109K Fl025 $20 2$ $25 50Doog 0i OCS$25 * 50Fo 5170 $2 5149SB I0 $1oole, 4089 $10so .512 $6C Wooho,k P40 $15RE BORE TO ADD20 -~ 47B Mo Molligo $12POE HANDLING BINS MODELOOMS QUICKEST MAIL SERVICE January 1976 73 Sflu 4 vOiCe PeiCtS SI 1401dfl AgO jflhjdLJLKjlilft ito UJA.n Ra.isteiisciaesi RI/Salt b0diiO. fS.mat 545 etitog *i MYIfl Shiv SRSet OfOpOSte-gO paid iSqflhRy Dtie
Edition: Model Aviation - 1976/01
Page Numbers: 14, 15, 16, 17, 72, 73
Straight lines simple structure commend 4 Bits builders whod like real going machine pylon has added advantage being good sport flier between races 14 Model Aviation four bits Designed Dave Jackson Text Bill Cranston ONE OF TI-IF popular fastest growing competitive events make RC scene long time Quickie 500 racing Basically Quickie 500 racing 500 sq 40-sized front-rotor en gine aircraft objective Quickie 500 racing provide closed course racing will encourage participation sport novice racing enthusiast lowest cost Racing aircraft lot fun fun shared average RCer Racing need require specialized hard build fly aircraft Racing aircraft will fun event such Quickie 500 provides average RCer oppor tunity Race simple easy build air craft Fly stable docile aircraft can sport flown well raced competitive stock out-ofthe-box 40 FR mill required virtually carveyour-own props mix-your-own blend secret fuel other specialized tech niques Formula boys use Race some assurance youve got just good chance win next RCer perhaps three four differ ent aircraft currently being flown Quickie 500 racing event air craft similar design 4 BITS departure designs 4 BITS shoulder wing 500 sq aircraft designed exclusively Quickie 500 racing Since introduction May 1975 ofthe4 BITS has win ners circle racing contest entered 4 BITS has proven stable competitive Quickie 500 racing air craft currently being flown Between rac ing weekends 4 BITS has doubled sport aircraft flying Fun-Flys just being flown fun flying Stable speed landings almost walk speed beginners experts agree 4 BITS fun aircraft sport flying aircraft Quickie 500 racing IuseIage assembly through step 11 instructions inner lamination sides 1/64 ply Plywood bottom fastened bench small brads Check parts squareness Assembly through step 19 instructions note 1f4 spacer rear locating fuselage exactly over centerline reference drawn board identical bends result both sides Winners 500 Club meet Auxiliary II Phoenix right left Bob Shaw Bill Cranston Mike Cooke Len Spina Three jobs right Quickie 500 and/or sport flying fine airplane 4 Bits Its placed meet entered extremely popularand successfulin Southwest Specifications Fuselage Shoulder wing box type laminated 1/64 ply superior strength rigid engine platform Engine Side mount 0-degree offset thrust Wing 500 sq excluding tips semisymmetrical 0-degree incidence Stab 18% wing area kness 0-degree incidence Weight 3 41/4 Ibs ready-to-fly less fuel Finish N4onoKote Solar Film racing conventional sport flying Construction Start construction studying plans construction steps woods ac cessones hobby shop items use new instant glues Cyanoacrylate such Hot Stuff Zap etc highly recommended except high stress areas Use epoxy glues areas use fast set epoxies particularly firewall area Fast epoxies allow adequate penetration especially joining plywoods Use epoxy glue called construction steps experience has proven necessity laminating 1/64 ply fuselage sides use 3M type 77 equivalent use water-based contact cement Dont additional beefing-up 4 BITS abnormally strong Beefing up will add unnecessary weight no increase strength Fuselage Cut out two fuselage sides /8 balsa sheeting Laminate 1/64 ply using contact cement balsa sides sure make right left side Note ar rows plans indicate fuselage sides bottom etc outlines 2 Mark location bulkhead #1 ply inner side fuselage sides 3 Glue alsa stringers ply side fuse sides Set aside dry 4 Cut out 3/32 ply bottom mark fore-aft center line Also mark location bulkhead #1 5 Cut Out firewall mark January 1976 15 Above Squared fuselage provides ample space ideal radio installation spite slim ness ship Below Neat installation aileron servo Holes nylon bolts Bill Cranston taching rpm side-mounted 40 engine before race racing ship covered two colors Monokote Solar Film Heavier covering can used sport flying Four Bits center line both vertically horizontally 6 Draw least 36 straight reference line work surface 7 Lay bottom 3/32 ply over ref erence line aligning center line ply bottom work surface reference line Using small brads nail ply bottom work surface Leave enough brad ex posed easy removal later 8 Cut out balsa #1 bulkhead sure balsa grain vertical glued ply bottom Glue #1 bulkhead place ply bottom making sure bulkhead square bottom 9 Cut out two /4 X a wingsaddle fuselage spacers Glue lower spacer ply bottom noting location plans Note 4 BITS does use bulkhead location L K 40 $42 /5 01 Si4 2 0 40 ZW40 0 014040 34 o 4140N 01 -J 240 0 auJ002 444 2 N. $4-I 4 0 440240 0 404040I014i40ZWO X404012 40 040 0 2 0 ii II /FX I3 -lit TFL z 2 4 4 4 2 2 0 2 4 F 1 V 0 44 4 4 $4ILI 0 40 0 -0 40 0 + I. 42 U 2 X 00 210 41 z t 0 4 0 I0 0 n01 24 04 40 040 o40 FT ni .440 IL WI -i4ZZZZ i z I 4- 5 4 y 4 44- 0140 16 Model Aviation 02 4040 10 Epoxy glue firewall ply bottom firewall flush front edge ply bottom Using square absolutely certain firewall true center line bottom ply true vertically 11 Cut out ply landing gear block Epoxy glue bottom butting up #1 bulkhead 12 After both firewall landing gear block epoxy has set glue fuse sides ply bottom Use epoxy glue firewall #1 bulkhead sure alsa fuselage stringers snug against ply bottom Use clamps firewall #1 bulkhead locations 13 Glue upper wing-saddle fuselage spacer location spacer will help keep fuselage sides true top 14 After fuselage assembly epoxy has set pull rear fuselage sides using scrap a spacer rear sure fuselage sides centered over work surface ref erence line Note Scrap a should tack glued place vertical fin location 15 Glue upper lower alsa rear fuselage spacers locations indicated plans omit spacers 16 Cut out ly pine front top block epoxy glue block fuselage firewall 17 Cut out hatch balsa Length 4 approximately 3 wide Length important 18 Cut out rear /16 hard balsa top block Balsa grain should crossways fuselage Sand rear edge top block approximately 45 degrees match wing saddle contour 19 Using hatch spacer epoxy glue rear top block #1 bulkhead fuselage sides glue hatch 20 Cut out I/g balsa fuselage rear top sheeting glue fuse 21 Allowing ample time fuselage assembly dry remove hatch pull brads remove assembly work surface 22 Invert fuselage glue tail wheel ply bracket support rear fuselage glue 1/8 balsa bottom sheeting fuse 23 Cut out two pruce hatch hold-down blocks Fit epoxy glue fuselage locations shown plans 24 Drill four s hatch locations shown plans plug holes ls Sand flush Use epoxy glue dowel plugs 25 Tack glue hatch fuselage 26 Sand entire fuselage rounding cor ners no greater ve scrap a rear fuselage until fuselage has sanded 27 Remove hatch epoxy glue alsa corner bracing top bottom firewall Wing 1 Make rib template 1/16 ply Note rib semi-symmetrical Mark bot tom ribs ribs cut out Make 16 1/16 ribs and4 3/32 ribs 2 Cut tape left wing plan right wing plan tape plans building surface wing built piece 3 Using 1/16 X balsa pine make two 25 shims Align rear shims rear spar indicated plans tape shim down 4 Make main spars pruce pine substitute balsa main spars Tape bottom par shim noting rear spar aligns rear shim 5 Assembling ribs over bottom spar glue ribs except two 3/32 center ribs two 1/16 center ribs sure ribs marking down 6 Glue top par ribs 7 Glue trailing edge stock ribs noting trailing-edge joint right wing cut center joint Note trailing edge made purchased pre-cut 1 k 8 Glue alsa sub-leading edge continued page 72 January 1976 17 Wing construction through step 10 wing assembly instruction Because no dihedral wing can assembled piece flat workbench Note ply joiner Completed wing ready tor sanding 0-section leading edge portion yields maximum strength warp resistance trailing edge laminated Note spar webs between inboard ribs Wing assembly through step 14 Note clamping method applying trailing edge sheeting Herd wood placed between clamp jaws balsa Use epoxy glue operation P R 0 D U CT S N C SVILLE ROAD OW GROVE PA 19090 659-3900 De-Lux CHICKEN STICKS last uch class chicken sticks fancy grip plastic tube touch yellow ch better color bloody fingers 6 package $125 shock read back package PROP-bC HI-TORK SPINNER Solve problem prop coming loose Get smoother idle Nylon spinner cone avail able 1/2 134 2 2VA 24 2/4 white black red Hardware kit available 4-24 4-28 6 mm 7 mm threads WANT TO START SOMETHING Hi-Tork Hi-RPM 12-volt starter has taken whole world storm Guaranteed two full years features higher torpue RPMs other starter heavy-duty long-life motor instant strip switch Four Bits continued provide epoxy lock 2 Bending aluminum brackets slightly outward provide snug fit fuselage install dont glue blocks fuselage approximate locations 3 Install wing fuselage taking ex treme care wing alignment Rubberband wing position satisfied alignment mark bottom wing along fuselage sides future reference 4 Through wing hold-down bolt holes mark location wing hold-down blocks fuselage pencil about 2 lead useful 5 Remove wing check marks center wing-hold down blocks Move blocks fuselage until marks centered install wing mark check satisfied mark wing hold-down aluminum bracket locations fuse 6 Remove blocks drill 13/64 tapping hole secure blocks position using epoxy glue fiberglass Fiberglass must used 7 Re-install wing position tap four wing block holes ap Tap through wing bolt holes far pos sible tap remove wing finish tap procedure will help correct misalignment wing bolt holes drilled wing StabilizerVertical Fin Construct stabilizer vertical fin control surfaces dorsal fairings a sheeting shown plans 2 Glue tips stab vertical fin Tack glue rudder elevator sand stab vertical fin shape Note control surfaces tapered StabilizerFin Installation Slide stabilizer cut-out fuse lage Make sure stab centered fuselage Measure stabilizer tips fuselage center-line firewall Mark bottom stabilizer reference 2 Install wing place slide stabilizer place after end fuselage slide forward observing wing-stab rela tionship sure wing/stabilizer appears parallel Sand either cut-out necessary 3 Check stabilizer incidence yard stick placed top stabilizer along side fuselage will line up w lowest portion wing saddle 4 satisfied stabilizer loca tion incidence glue stabilizer place 5 Slide vertical fin place check squareness stabilizer using square glue fin place 6 Glue dorsal fairing vertical fin fuselage fairings stabilizer-fuselage sand Control SurfacesHinging control surfaces should beveled leading edge indicated plans Beveled amount should allow surface move about 30 degrees either side center use living hinges recom mended type hinge will keep hinge gap minimum now allow wide hinge gaps especially aileron elevator Use least four hinges elevator three per aileron two rudder Instant glue makes easy hinge installation Landing Gear Either purchase landing gear pre-formed make template shown plans Secure gear fuselage least two ylon bolts Drill tap fuselage landing gear block Use 2 main gear wheels wheel Engine Mount Fuel Tank Side-mount engine type mounting provides correct carburetor-fuel tank relationship sure check engine offset down-thrust slight amount right-off set two degrees max wont hurt no downth rust Finishing recommended aircraft finish MonoKote Solar Film etc weight consideration type finish will add appreciable weight second ease repair durable also allows complete sealing hingeline gap CG Set CG indicated plans 4 BITS raced allow CG limits vary plus minus htly forward acceptable recommended balance point never 72 Model Aviation GLOW PLUG KLIP . Got Together Now fully assembled convenience unbreakable Glow Plug Klip still carries same unconditional guar antee ever breaks well replace free 39GC Cox Testors other l/2A engines 4OGC 09 80 engines anaaes 01 ola-Time air racing ianaing wing tip 4 Bits rounds pylon Electronic Flight Timer S12SO-hit $17SO-assenbId SKIPPED VIA FIRST CLASS MAIL FULL ONE YEAR GUARANTEE ACTUAL SIZE ONLY II58 TESTED & APPROVED K IRK LAND WA 9E033 cially aft Slide bat tery servos etc fore-afi obtain balance point Remember check CG accessories installed pushrods fuel tank prop etc Control Surface Movements Initially set up surface movements follow ing Elevator Aileron -3/16 up down Rudder % right left Radio Installation Use servo trays possible 4 BITS will accept three KPS-12 type servos mounted side-by-side tray Use aileron servo side mount bracket Wrap battery foam install receiver-servo area use NyRod acceptable rudder pushrod should used elevator sure aileron control horns free after installation wing Some filing wing hold-down blocks may necessary Use flex cable engine throttle hook-up Flying 4 BITS will very re sponsive Set control surface movements suit individual preference never set response allow snap-roll aircraft raced find point increase elevator throw until snap-roll obtained back-off hole control horn general sport flying set control surface movements limited flying ability Always however start out soft controls Youll find 4 BITS fun aircraft youve ever flown racing watch out guys -Korda/Oldenkamp continued page 40 winds down free-wheeling begins particularly shaft gets bent little landing knock vibration sets An easy way cure since nose plug gets lot wear simply cant made lit forever coat fiveminute epoxy slip place pull out let dry doesnt work put piece masking tape top outer joint just after winding point being noseplug should free fall out airplane hits something gets upset upon landing References Balsa plywood spruce music wire rubber strip dowels tubing tissue Lite-Coat dope rubber lubricant etc available directly Sig Manu facturing Co Montezuma Iowa local hobby shops Sandpaper Titebond glue Five-Mm ute Epoxy glue--from variety hardware stores Plastic Propellers Peck-Polymers has some excellent units up 9/2 diameter Peck-Polymers P0 Box 2498 La Mesa Ca 92041 Rubber Winding Hook Jim Crockett Replicas l442 N Fruit Ave Fresno Ca 93728 PermaGloss Coverite may newest revolution covering material Heres unsolicited testimonial editor RC Modeler Mr Don Dewey quote part August 1975 issue .. iron-on plastic fabrics several minor dis advantages Among high gloss plastic look could hidden several coats exhaust residue addition materials have tendency sag during periods extreme humidity changes. d like have next model covered fabric far stronger silk covers up minor surface imperfections actually contains four coats paint realistic painted fabric appearance no plastic sheen will never shatter sag scratch best all have iron sanded framework l find aircraft covered Coverite PermaGloss will have lightest yet strongest coverings can possibly apply addition will have painted fabric appearance would find difficult equal silk dope aircraft particularly strength-to-weight ratio w standpoint realistic appearance strength durability ease repair mention ease application aGloss may newest revolution covering materials C0Vi-i i Chestnut St Phila Pa 19106 U QUE PLANS FOR GAS MODELERS PRICE INCLUDE PATTERNO 42 Eoig P26A $14 . 45 BOio 940-3 P12 $9 0ip OR] $7 47 C Bk P4-E $15 pod XIII $10 47 Oohook F11C-2 $15 l 17 $9 47 CoIC BeIIdie $11 Pp $8 48 GM GlodMbe $10 OHBoo 0 $9 49 SI Koode P017 $10 FBI 2B6C $11 $0 Polith Fl PO $10 rpe 46 Plo] DIII 50, $9 82 Slooo TW SB7 $10 Sop 07F1$11 $7 Co 010 FoIoo $15 54 MoMB-i$14 57 CoSO2C1 Soo $14 57 Boote 0,i0oiI$95B Boejo0B9Boobe$9 6AEGGVBoobeS1260Doog 0-SB00$$12 ___66 Coo 2GSI1ockef5F1 $14 $20 07 Liod Look Siio $12 $94610MOBE 4B Mc 109K Fl025 $20 2$ $25 50Doog 0i OCS$25 * 50Fo 5170 $2 5149SB I0 $1oole, 4089 $10so .512 $6C Wooho,k P40 $15RE BORE TO ADD20 -~ 47B Mo Molligo $12POE HANDLING BINS MODELOOMS QUICKEST MAIL SERVICE January 1976 73 Sflu 4 vOiCe PeiCtS SI 1401dfl AgO jflhjdLJLKjlilft ito UJA.n Ra.isteiisciaesi RI/Salt b0diiO. fS.mat 545 etitog *i MYIfl Shiv SRSet OfOpOSte-gO paid iSqflhRy Dtie
Edition: Model Aviation - 1976/01
Page Numbers: 14, 15, 16, 17, 72, 73
Straight lines simple structure commend 4 Bits builders whod like real going machine pylon has added advantage being good sport flier between races 14 Model Aviation four bits Designed Dave Jackson Text Bill Cranston ONE OF TI-IF popular fastest growing competitive events make RC scene long time Quickie 500 racing Basically Quickie 500 racing 500 sq 40-sized front-rotor en gine aircraft objective Quickie 500 racing provide closed course racing will encourage participation sport novice racing enthusiast lowest cost Racing aircraft lot fun fun shared average RCer Racing need require specialized hard build fly aircraft Racing aircraft will fun event such Quickie 500 provides average RCer oppor tunity Race simple easy build air craft Fly stable docile aircraft can sport flown well raced competitive stock out-ofthe-box 40 FR mill required virtually carveyour-own props mix-your-own blend secret fuel other specialized tech niques Formula boys use Race some assurance youve got just good chance win next RCer perhaps three four differ ent aircraft currently being flown Quickie 500 racing event air craft similar design 4 BITS departure designs 4 BITS shoulder wing 500 sq aircraft designed exclusively Quickie 500 racing Since introduction May 1975 ofthe4 BITS has win ners circle racing contest entered 4 BITS has proven stable competitive Quickie 500 racing air craft currently being flown Between rac ing weekends 4 BITS has doubled sport aircraft flying Fun-Flys just being flown fun flying Stable speed landings almost walk speed beginners experts agree 4 BITS fun aircraft sport flying aircraft Quickie 500 racing IuseIage assembly through step 11 instructions inner lamination sides 1/64 ply Plywood bottom fastened bench small brads Check parts squareness Assembly through step 19 instructions note 1f4 spacer rear locating fuselage exactly over centerline reference drawn board identical bends result both sides Winners 500 Club meet Auxiliary II Phoenix right left Bob Shaw Bill Cranston Mike Cooke Len Spina Three jobs right Quickie 500 and/or sport flying fine airplane 4 Bits Its placed meet entered extremely popularand successfulin Southwest Specifications Fuselage Shoulder wing box type laminated 1/64 ply superior strength rigid engine platform Engine Side mount 0-degree offset thrust Wing 500 sq excluding tips semisymmetrical 0-degree incidence Stab 18% wing area kness 0-degree incidence Weight 3 41/4 Ibs ready-to-fly less fuel Finish N4onoKote Solar Film racing conventional sport flying Construction Start construction studying plans construction steps woods ac cessones hobby shop items use new instant glues Cyanoacrylate such Hot Stuff Zap etc highly recommended except high stress areas Use epoxy glues areas use fast set epoxies particularly firewall area Fast epoxies allow adequate penetration especially joining plywoods Use epoxy glue called construction steps experience has proven necessity laminating 1/64 ply fuselage sides use 3M type 77 equivalent use water-based contact cement Dont additional beefing-up 4 BITS abnormally strong Beefing up will add unnecessary weight no increase strength Fuselage Cut out two fuselage sides /8 balsa sheeting Laminate 1/64 ply using contact cement balsa sides sure make right left side Note ar rows plans indicate fuselage sides bottom etc outlines 2 Mark location bulkhead #1 ply inner side fuselage sides 3 Glue alsa stringers ply side fuse sides Set aside dry 4 Cut out 3/32 ply bottom mark fore-aft center line Also mark location bulkhead #1 5 Cut Out firewall mark January 1976 15 Above Squared fuselage provides ample space ideal radio installation spite slim ness ship Below Neat installation aileron servo Holes nylon bolts Bill Cranston taching rpm side-mounted 40 engine before race racing ship covered two colors Monokote Solar Film Heavier covering can used sport flying Four Bits center line both vertically horizontally 6 Draw least 36 straight reference line work surface 7 Lay bottom 3/32 ply over ref erence line aligning center line ply bottom work surface reference line Using small brads nail ply bottom work surface Leave enough brad ex posed easy removal later 8 Cut out balsa #1 bulkhead sure balsa grain vertical glued ply bottom Glue #1 bulkhead place ply bottom making sure bulkhead square bottom 9 Cut out two /4 X a wingsaddle fuselage spacers Glue lower spacer ply bottom noting location plans Note 4 BITS does use bulkhead location L K 40 $42 /5 01 Si4 2 0 40 ZW40 0 014040 34 o 4140N 01 -J 240 0 auJ002 444 2 N. $4-I 4 0 440240 0 404040I014i40ZWO X404012 40 040 0 2 0 ii II /FX I3 -lit TFL z 2 4 4 4 2 2 0 2 4 F 1 V 0 44 4 4 $4ILI 0 40 0 -0 40 0 + I. 42 U 2 X 00 210 41 z t 0 4 0 I0 0 n01 24 04 40 040 o40 FT ni .440 IL WI -i4ZZZZ i z I 4- 5 4 y 4 44- 0140 16 Model Aviation 02 4040 10 Epoxy glue firewall ply bottom firewall flush front edge ply bottom Using square absolutely certain firewall true center line bottom ply true vertically 11 Cut out ply landing gear block Epoxy glue bottom butting up #1 bulkhead 12 After both firewall landing gear block epoxy has set glue fuse sides ply bottom Use epoxy glue firewall #1 bulkhead sure alsa fuselage stringers snug against ply bottom Use clamps firewall #1 bulkhead locations 13 Glue upper wing-saddle fuselage spacer location spacer will help keep fuselage sides true top 14 After fuselage assembly epoxy has set pull rear fuselage sides using scrap a spacer rear sure fuselage sides centered over work surface ref erence line Note Scrap a should tack glued place vertical fin location 15 Glue upper lower alsa rear fuselage spacers locations indicated plans omit spacers 16 Cut out ly pine front top block epoxy glue block fuselage firewall 17 Cut out hatch balsa Length 4 approximately 3 wide Length important 18 Cut out rear /16 hard balsa top block Balsa grain should crossways fuselage Sand rear edge top block approximately 45 degrees match wing saddle contour 19 Using hatch spacer epoxy glue rear top block #1 bulkhead fuselage sides glue hatch 20 Cut out I/g balsa fuselage rear top sheeting glue fuse 21 Allowing ample time fuselage assembly dry remove hatch pull brads remove assembly work surface 22 Invert fuselage glue tail wheel ply bracket support rear fuselage glue 1/8 balsa bottom sheeting fuse 23 Cut out two pruce hatch hold-down blocks Fit epoxy glue fuselage locations shown plans 24 Drill four s hatch locations shown plans plug holes ls Sand flush Use epoxy glue dowel plugs 25 Tack glue hatch fuselage 26 Sand entire fuselage rounding cor ners no greater ve scrap a rear fuselage until fuselage has sanded 27 Remove hatch epoxy glue alsa corner bracing top bottom firewall Wing 1 Make rib template 1/16 ply Note rib semi-symmetrical Mark bot tom ribs ribs cut out Make 16 1/16 ribs and4 3/32 ribs 2 Cut tape left wing plan right wing plan tape plans building surface wing built piece 3 Using 1/16 X balsa pine make two 25 shims Align rear shims rear spar indicated plans tape shim down 4 Make main spars pruce pine substitute balsa main spars Tape bottom par shim noting rear spar aligns rear shim 5 Assembling ribs over bottom spar glue ribs except two 3/32 center ribs two 1/16 center ribs sure ribs marking down 6 Glue top par ribs 7 Glue trailing edge stock ribs noting trailing-edge joint right wing cut center joint Note trailing edge made purchased pre-cut 1 k 8 Glue alsa sub-leading edge continued page 72 January 1976 17 Wing construction through step 10 wing assembly instruction Because no dihedral wing can assembled piece flat workbench Note ply joiner Completed wing ready tor sanding 0-section leading edge portion yields maximum strength warp resistance trailing edge laminated Note spar webs between inboard ribs Wing assembly through step 14 Note clamping method applying trailing edge sheeting Herd wood placed between clamp jaws balsa Use epoxy glue operation P R 0 D U CT S N C SVILLE ROAD OW GROVE PA 19090 659-3900 De-Lux CHICKEN STICKS last uch class chicken sticks fancy grip plastic tube touch yellow ch better color bloody fingers 6 package $125 shock read back package PROP-bC HI-TORK SPINNER Solve problem prop coming loose Get smoother idle Nylon spinner cone avail able 1/2 134 2 2VA 24 2/4 white black red Hardware kit available 4-24 4-28 6 mm 7 mm threads WANT TO START SOMETHING Hi-Tork Hi-RPM 12-volt starter has taken whole world storm Guaranteed two full years features higher torpue RPMs other starter heavy-duty long-life motor instant strip switch Four Bits continued provide epoxy lock 2 Bending aluminum brackets slightly outward provide snug fit fuselage install dont glue blocks fuselage approximate locations 3 Install wing fuselage taking ex treme care wing alignment Rubberband wing position satisfied alignment mark bottom wing along fuselage sides future reference 4 Through wing hold-down bolt holes mark location wing hold-down blocks fuselage pencil about 2 lead useful 5 Remove wing check marks center wing-hold down blocks Move blocks fuselage until marks centered install wing mark check satisfied mark wing hold-down aluminum bracket locations fuse 6 Remove blocks drill 13/64 tapping hole secure blocks position using epoxy glue fiberglass Fiberglass must used 7 Re-install wing position tap four wing block holes ap Tap through wing bolt holes far pos sible tap remove wing finish tap procedure will help correct misalignment wing bolt holes drilled wing StabilizerVertical Fin Construct stabilizer vertical fin control surfaces dorsal fairings a sheeting shown plans 2 Glue tips stab vertical fin Tack glue rudder elevator sand stab vertical fin shape Note control surfaces tapered StabilizerFin Installation Slide stabilizer cut-out fuse lage Make sure stab centered fuselage Measure stabilizer tips fuselage center-line firewall Mark bottom stabilizer reference 2 Install wing place slide stabilizer place after end fuselage slide forward observing wing-stab rela tionship sure wing/stabilizer appears parallel Sand either cut-out necessary 3 Check stabilizer incidence yard stick placed top stabilizer along side fuselage will line up w lowest portion wing saddle 4 satisfied stabilizer loca tion incidence glue stabilizer place 5 Slide vertical fin place check squareness stabilizer using square glue fin place 6 Glue dorsal fairing vertical fin fuselage fairings stabilizer-fuselage sand Control SurfacesHinging control surfaces should beveled leading edge indicated plans Beveled amount should allow surface move about 30 degrees either side center use living hinges recom mended type hinge will keep hinge gap minimum now allow wide hinge gaps especially aileron elevator Use least four hinges elevator three per aileron two rudder Instant glue makes easy hinge installation Landing Gear Either purchase landing gear pre-formed make template shown plans Secure gear fuselage least two ylon bolts Drill tap fuselage landing gear block Use 2 main gear wheels wheel Engine Mount Fuel Tank Side-mount engine type mounting provides correct carburetor-fuel tank relationship sure check engine offset down-thrust slight amount right-off set two degrees max wont hurt no downth rust Finishing recommended aircraft finish MonoKote Solar Film etc weight consideration type finish will add appreciable weight second ease repair durable also allows complete sealing hingeline gap CG Set CG indicated plans 4 BITS raced allow CG limits vary plus minus htly forward acceptable recommended balance point never 72 Model Aviation GLOW PLUG KLIP . Got Together Now fully assembled convenience unbreakable Glow Plug Klip still carries same unconditional guar antee ever breaks well replace free 39GC Cox Testors other l/2A engines 4OGC 09 80 engines anaaes 01 ola-Time air racing ianaing wing tip 4 Bits rounds pylon Electronic Flight Timer S12SO-hit $17SO-assenbId SKIPPED VIA FIRST CLASS MAIL FULL ONE YEAR GUARANTEE ACTUAL SIZE ONLY II58 TESTED & APPROVED K IRK LAND WA 9E033 cially aft Slide bat tery servos etc fore-afi obtain balance point Remember check CG accessories installed pushrods fuel tank prop etc Control Surface Movements Initially set up surface movements follow ing Elevator Aileron -3/16 up down Rudder % right left Radio Installation Use servo trays possible 4 BITS will accept three KPS-12 type servos mounted side-by-side tray Use aileron servo side mount bracket Wrap battery foam install receiver-servo area use NyRod acceptable rudder pushrod should used elevator sure aileron control horns free after installation wing Some filing wing hold-down blocks may necessary Use flex cable engine throttle hook-up Flying 4 BITS will very re sponsive Set control surface movements suit individual preference never set response allow snap-roll aircraft raced find point increase elevator throw until snap-roll obtained back-off hole control horn general sport flying set control surface movements limited flying ability Always however start out soft controls Youll find 4 BITS fun aircraft youve ever flown racing watch out guys -Korda/Oldenkamp continued page 40 winds down free-wheeling begins particularly shaft gets bent little landing knock vibration sets An easy way cure since nose plug gets lot wear simply cant made lit forever coat fiveminute epoxy slip place pull out let dry doesnt work put piece masking tape top outer joint just after winding point being noseplug should free fall out airplane hits something gets upset upon landing References Balsa plywood spruce music wire rubber strip dowels tubing tissue Lite-Coat dope rubber lubricant etc available directly Sig Manu facturing Co Montezuma Iowa local hobby shops Sandpaper Titebond glue Five-Mm ute Epoxy glue--from variety hardware stores Plastic Propellers Peck-Polymers has some excellent units up 9/2 diameter Peck-Polymers P0 Box 2498 La Mesa Ca 92041 Rubber Winding Hook Jim Crockett Replicas l442 N Fruit Ave Fresno Ca 93728 PermaGloss Coverite may newest revolution covering material Heres unsolicited testimonial editor RC Modeler Mr Don Dewey quote part August 1975 issue .. iron-on plastic fabrics several minor dis advantages Among high gloss plastic look could hidden several coats exhaust residue addition materials have tendency sag during periods extreme humidity changes. d like have next model covered fabric far stronger silk covers up minor surface imperfections actually contains four coats paint realistic painted fabric appearance no plastic sheen will never shatter sag scratch best all have iron sanded framework l find aircraft covered Coverite PermaGloss will have lightest yet strongest coverings can possibly apply addition will have painted fabric appearance would find difficult equal silk dope aircraft particularly strength-to-weight ratio w standpoint realistic appearance strength durability ease repair mention ease application aGloss may newest revolution covering materials C0Vi-i i Chestnut St Phila Pa 19106 U QUE PLANS FOR GAS MODELERS PRICE INCLUDE PATTERNO 42 Eoig P26A $14 . 45 BOio 940-3 P12 $9 0ip OR] $7 47 C Bk P4-E $15 pod XIII $10 47 Oohook F11C-2 $15 l 17 $9 47 CoIC BeIIdie $11 Pp $8 48 GM GlodMbe $10 OHBoo 0 $9 49 SI Koode P017 $10 FBI 2B6C $11 $0 Polith Fl PO $10 rpe 46 Plo] DIII 50, $9 82 Slooo TW SB7 $10 Sop 07F1$11 $7 Co 010 FoIoo $15 54 MoMB-i$14 57 CoSO2C1 Soo $14 57 Boote 0,i0oiI$95B Boejo0B9Boobe$9 6AEGGVBoobeS1260Doog 0-SB00$$12 ___66 Coo 2GSI1ockef5F1 $14 $20 07 Liod Look Siio $12 $94610MOBE 4B Mc 109K Fl025 $20 2$ $25 50Doog 0i OCS$25 * 50Fo 5170 $2 5149SB I0 $1oole, 4089 $10so .512 $6C Wooho,k P40 $15RE BORE TO ADD20 -~ 47B Mo Molligo $12POE HANDLING BINS MODELOOMS QUICKEST MAIL SERVICE January 1976 73 Sflu 4 vOiCe PeiCtS SI 1401dfl AgO jflhjdLJLKjlilft ito UJA.n Ra.isteiisciaesi RI/Salt b0diiO. fS.mat 545 etitog *i MYIfl Shiv SRSet OfOpOSte-gO paid iSqflhRy Dtie
Edition: Model Aviation - 1976/01
Page Numbers: 14, 15, 16, 17, 72, 73
Straight lines simple structure commend 4 Bits builders whod like real going machine pylon has added advantage being good sport flier between races 14 Model Aviation four bits Designed Dave Jackson Text Bill Cranston ONE OF TI-IF popular fastest growing competitive events make RC scene long time Quickie 500 racing Basically Quickie 500 racing 500 sq 40-sized front-rotor en gine aircraft objective Quickie 500 racing provide closed course racing will encourage participation sport novice racing enthusiast lowest cost Racing aircraft lot fun fun shared average RCer Racing need require specialized hard build fly aircraft Racing aircraft will fun event such Quickie 500 provides average RCer oppor tunity Race simple easy build air craft Fly stable docile aircraft can sport flown well raced competitive stock out-ofthe-box 40 FR mill required virtually carveyour-own props mix-your-own blend secret fuel other specialized tech niques Formula boys use Race some assurance youve got just good chance win next RCer perhaps three four differ ent aircraft currently being flown Quickie 500 racing event air craft similar design 4 BITS departure designs 4 BITS shoulder wing 500 sq aircraft designed exclusively Quickie 500 racing Since introduction May 1975 ofthe4 BITS has win ners circle racing contest entered 4 BITS has proven stable competitive Quickie 500 racing air craft currently being flown Between rac ing weekends 4 BITS has doubled sport aircraft flying Fun-Flys just being flown fun flying Stable speed landings almost walk speed beginners experts agree 4 BITS fun aircraft sport flying aircraft Quickie 500 racing IuseIage assembly through step 11 instructions inner lamination sides 1/64 ply Plywood bottom fastened bench small brads Check parts squareness Assembly through step 19 instructions note 1f4 spacer rear locating fuselage exactly over centerline reference drawn board identical bends result both sides Winners 500 Club meet Auxiliary II Phoenix right left Bob Shaw Bill Cranston Mike Cooke Len Spina Three jobs right Quickie 500 and/or sport flying fine airplane 4 Bits Its placed meet entered extremely popularand successfulin Southwest Specifications Fuselage Shoulder wing box type laminated 1/64 ply superior strength rigid engine platform Engine Side mount 0-degree offset thrust Wing 500 sq excluding tips semisymmetrical 0-degree incidence Stab 18% wing area kness 0-degree incidence Weight 3 41/4 Ibs ready-to-fly less fuel Finish N4onoKote Solar Film racing conventional sport flying Construction Start construction studying plans construction steps woods ac cessones hobby shop items use new instant glues Cyanoacrylate such Hot Stuff Zap etc highly recommended except high stress areas Use epoxy glues areas use fast set epoxies particularly firewall area Fast epoxies allow adequate penetration especially joining plywoods Use epoxy glue called construction steps experience has proven necessity laminating 1/64 ply fuselage sides use 3M type 77 equivalent use water-based contact cement Dont additional beefing-up 4 BITS abnormally strong Beefing up will add unnecessary weight no increase strength Fuselage Cut out two fuselage sides /8 balsa sheeting Laminate 1/64 ply using contact cement balsa sides sure make right left side Note ar rows plans indicate fuselage sides bottom etc outlines 2 Mark location bulkhead #1 ply inner side fuselage sides 3 Glue alsa stringers ply side fuse sides Set aside dry 4 Cut out 3/32 ply bottom mark fore-aft center line Also mark location bulkhead #1 5 Cut Out firewall mark January 1976 15 Above Squared fuselage provides ample space ideal radio installation spite slim ness ship Below Neat installation aileron servo Holes nylon bolts Bill Cranston taching rpm side-mounted 40 engine before race racing ship covered two colors Monokote Solar Film Heavier covering can used sport flying Four Bits center line both vertically horizontally 6 Draw least 36 straight reference line work surface 7 Lay bottom 3/32 ply over ref erence line aligning center line ply bottom work surface reference line Using small brads nail ply bottom work surface Leave enough brad ex posed easy removal later 8 Cut out balsa #1 bulkhead sure balsa grain vertical glued ply bottom Glue #1 bulkhead place ply bottom making sure bulkhead square bottom 9 Cut out two /4 X a wingsaddle fuselage spacers Glue lower spacer ply bottom noting location plans Note 4 BITS does use bulkhead location L K 40 $42 /5 01 Si4 2 0 40 ZW40 0 014040 34 o 4140N 01 -J 240 0 auJ002 444 2 N. $4-I 4 0 440240 0 404040I014i40ZWO X404012 40 040 0 2 0 ii II /FX I3 -lit TFL z 2 4 4 4 2 2 0 2 4 F 1 V 0 44 4 4 $4ILI 0 40 0 -0 40 0 + I. 42 U 2 X 00 210 41 z t 0 4 0 I0 0 n01 24 04 40 040 o40 FT ni .440 IL WI -i4ZZZZ i z I 4- 5 4 y 4 44- 0140 16 Model Aviation 02 4040 10 Epoxy glue firewall ply bottom firewall flush front edge ply bottom Using square absolutely certain firewall true center line bottom ply true vertically 11 Cut out ply landing gear block Epoxy glue bottom butting up #1 bulkhead 12 After both firewall landing gear block epoxy has set glue fuse sides ply bottom Use epoxy glue firewall #1 bulkhead sure alsa fuselage stringers snug against ply bottom Use clamps firewall #1 bulkhead locations 13 Glue upper wing-saddle fuselage spacer location spacer will help keep fuselage sides true top 14 After fuselage assembly epoxy has set pull rear fuselage sides using scrap a spacer rear sure fuselage sides centered over work surface ref erence line Note Scrap a should tack glued place vertical fin location 15 Glue upper lower alsa rear fuselage spacers locations indicated plans omit spacers 16 Cut out ly pine front top block epoxy glue block fuselage firewall 17 Cut out hatch balsa Length 4 approximately 3 wide Length important 18 Cut out rear /16 hard balsa top block Balsa grain should crossways fuselage Sand rear edge top block approximately 45 degrees match wing saddle contour 19 Using hatch spacer epoxy glue rear top block #1 bulkhead fuselage sides glue hatch 20 Cut out I/g balsa fuselage rear top sheeting glue fuse 21 Allowing ample time fuselage assembly dry remove hatch pull brads remove assembly work surface 22 Invert fuselage glue tail wheel ply bracket support rear fuselage glue 1/8 balsa bottom sheeting fuse 23 Cut out two pruce hatch hold-down blocks Fit epoxy glue fuselage locations shown plans 24 Drill four s hatch locations shown plans plug holes ls Sand flush Use epoxy glue dowel plugs 25 Tack glue hatch fuselage 26 Sand entire fuselage rounding cor ners no greater ve scrap a rear fuselage until fuselage has sanded 27 Remove hatch epoxy glue alsa corner bracing top bottom firewall Wing 1 Make rib template 1/16 ply Note rib semi-symmetrical Mark bot tom ribs ribs cut out Make 16 1/16 ribs and4 3/32 ribs 2 Cut tape left wing plan right wing plan tape plans building surface wing built piece 3 Using 1/16 X balsa pine make two 25 shims Align rear shims rear spar indicated plans tape shim down 4 Make main spars pruce pine substitute balsa main spars Tape bottom par shim noting rear spar aligns rear shim 5 Assembling ribs over bottom spar glue ribs except two 3/32 center ribs two 1/16 center ribs sure ribs marking down 6 Glue top par ribs 7 Glue trailing edge stock ribs noting trailing-edge joint right wing cut center joint Note trailing edge made purchased pre-cut 1 k 8 Glue alsa sub-leading edge continued page 72 January 1976 17 Wing construction through step 10 wing assembly instruction Because no dihedral wing can assembled piece flat workbench Note ply joiner Completed wing ready tor sanding 0-section leading edge portion yields maximum strength warp resistance trailing edge laminated Note spar webs between inboard ribs Wing assembly through step 14 Note clamping method applying trailing edge sheeting Herd wood placed between clamp jaws balsa Use epoxy glue operation P R 0 D U CT S N C SVILLE ROAD OW GROVE PA 19090 659-3900 De-Lux CHICKEN STICKS last uch class chicken sticks fancy grip plastic tube touch yellow ch better color bloody fingers 6 package $125 shock read back package PROP-bC HI-TORK SPINNER Solve problem prop coming loose Get smoother idle Nylon spinner cone avail able 1/2 134 2 2VA 24 2/4 white black red Hardware kit available 4-24 4-28 6 mm 7 mm threads WANT TO START SOMETHING Hi-Tork Hi-RPM 12-volt starter has taken whole world storm Guaranteed two full years features higher torpue RPMs other starter heavy-duty long-life motor instant strip switch Four Bits continued provide epoxy lock 2 Bending aluminum brackets slightly outward provide snug fit fuselage install dont glue blocks fuselage approximate locations 3 Install wing fuselage taking ex treme care wing alignment Rubberband wing position satisfied alignment mark bottom wing along fuselage sides future reference 4 Through wing hold-down bolt holes mark location wing hold-down blocks fuselage pencil about 2 lead useful 5 Remove wing check marks center wing-hold down blocks Move blocks fuselage until marks centered install wing mark check satisfied mark wing hold-down aluminum bracket locations fuse 6 Remove blocks drill 13/64 tapping hole secure blocks position using epoxy glue fiberglass Fiberglass must used 7 Re-install wing position tap four wing block holes ap Tap through wing bolt holes far pos sible tap remove wing finish tap procedure will help correct misalignment wing bolt holes drilled wing StabilizerVertical Fin Construct stabilizer vertical fin control surfaces dorsal fairings a sheeting shown plans 2 Glue tips stab vertical fin Tack glue rudder elevator sand stab vertical fin shape Note control surfaces tapered StabilizerFin Installation Slide stabilizer cut-out fuse lage Make sure stab centered fuselage Measure stabilizer tips fuselage center-line firewall Mark bottom stabilizer reference 2 Install wing place slide stabilizer place after end fuselage slide forward observing wing-stab rela tionship sure wing/stabilizer appears parallel Sand either cut-out necessary 3 Check stabilizer incidence yard stick placed top stabilizer along side fuselage will line up w lowest portion wing saddle 4 satisfied stabilizer loca tion incidence glue stabilizer place 5 Slide vertical fin place check squareness stabilizer using square glue fin place 6 Glue dorsal fairing vertical fin fuselage fairings stabilizer-fuselage sand Control SurfacesHinging control surfaces should beveled leading edge indicated plans Beveled amount should allow surface move about 30 degrees either side center use living hinges recom mended type hinge will keep hinge gap minimum now allow wide hinge gaps especially aileron elevator Use least four hinges elevator three per aileron two rudder Instant glue makes easy hinge installation Landing Gear Either purchase landing gear pre-formed make template shown plans Secure gear fuselage least two ylon bolts Drill tap fuselage landing gear block Use 2 main gear wheels wheel Engine Mount Fuel Tank Side-mount engine type mounting provides correct carburetor-fuel tank relationship sure check engine offset down-thrust slight amount right-off set two degrees max wont hurt no downth rust Finishing recommended aircraft finish MonoKote Solar Film etc weight consideration type finish will add appreciable weight second ease repair durable also allows complete sealing hingeline gap CG Set CG indicated plans 4 BITS raced allow CG limits vary plus minus htly forward acceptable recommended balance point never 72 Model Aviation GLOW PLUG KLIP . Got Together Now fully assembled convenience unbreakable Glow Plug Klip still carries same unconditional guar antee ever breaks well replace free 39GC Cox Testors other l/2A engines 4OGC 09 80 engines anaaes 01 ola-Time air racing ianaing wing tip 4 Bits rounds pylon Electronic Flight Timer S12SO-hit $17SO-assenbId SKIPPED VIA FIRST CLASS MAIL FULL ONE YEAR GUARANTEE ACTUAL SIZE ONLY II58 TESTED & APPROVED K IRK LAND WA 9E033 cially aft Slide bat tery servos etc fore-afi obtain balance point Remember check CG accessories installed pushrods fuel tank prop etc Control Surface Movements Initially set up surface movements follow ing Elevator Aileron -3/16 up down Rudder % right left Radio Installation Use servo trays possible 4 BITS will accept three KPS-12 type servos mounted side-by-side tray Use aileron servo side mount bracket Wrap battery foam install receiver-servo area use NyRod acceptable rudder pushrod should used elevator sure aileron control horns free after installation wing Some filing wing hold-down blocks may necessary Use flex cable engine throttle hook-up Flying 4 BITS will very re sponsive Set control surface movements suit individual preference never set response allow snap-roll aircraft raced find point increase elevator throw until snap-roll obtained back-off hole control horn general sport flying set control surface movements limited flying ability Always however start out soft controls Youll find 4 BITS fun aircraft youve ever flown racing watch out guys -Korda/Oldenkamp continued page 40 winds down free-wheeling begins particularly shaft gets bent little landing knock vibration sets An easy way cure since nose plug gets lot wear simply cant made lit forever coat fiveminute epoxy slip place pull out let dry doesnt work put piece masking tape top outer joint just after winding point being noseplug should free fall out airplane hits something gets upset upon landing References Balsa plywood spruce music wire rubber strip dowels tubing tissue Lite-Coat dope rubber lubricant etc available directly Sig Manu facturing Co Montezuma Iowa local hobby shops Sandpaper Titebond glue Five-Mm ute Epoxy glue--from variety hardware stores Plastic Propellers Peck-Polymers has some excellent units up 9/2 diameter Peck-Polymers P0 Box 2498 La Mesa Ca 92041 Rubber Winding Hook Jim Crockett Replicas l442 N Fruit Ave Fresno Ca 93728 PermaGloss Coverite may newest revolution covering material Heres unsolicited testimonial editor RC Modeler Mr Don Dewey quote part August 1975 issue .. iron-on plastic fabrics several minor dis advantages Among high gloss plastic look could hidden several coats exhaust residue addition materials have tendency sag during periods extreme humidity changes. d like have next model covered fabric far stronger silk covers up minor surface imperfections actually contains four coats paint realistic painted fabric appearance no plastic sheen will never shatter sag scratch best all have iron sanded framework l find aircraft covered Coverite PermaGloss will have lightest yet strongest coverings can possibly apply addition will have painted fabric appearance would find difficult equal silk dope aircraft particularly strength-to-weight ratio w standpoint realistic appearance strength durability ease repair mention ease application aGloss may newest revolution covering materials C0Vi-i i Chestnut St Phila Pa 19106 U QUE PLANS FOR GAS MODELERS PRICE INCLUDE PATTERNO 42 Eoig P26A $14 . 45 BOio 940-3 P12 $9 0ip OR] $7 47 C Bk P4-E $15 pod XIII $10 47 Oohook F11C-2 $15 l 17 $9 47 CoIC BeIIdie $11 Pp $8 48 GM GlodMbe $10 OHBoo 0 $9 49 SI Koode P017 $10 FBI 2B6C $11 $0 Polith Fl PO $10 rpe 46 Plo] DIII 50, $9 82 Slooo TW SB7 $10 Sop 07F1$11 $7 Co 010 FoIoo $15 54 MoMB-i$14 57 CoSO2C1 Soo $14 57 Boote 0,i0oiI$95B Boejo0B9Boobe$9 6AEGGVBoobeS1260Doog 0-SB00$$12 ___66 Coo 2GSI1ockef5F1 $14 $20 07 Liod Look Siio $12 $94610MOBE 4B Mc 109K Fl025 $20 2$ $25 50Doog 0i OCS$25 * 50Fo 5170 $2 5149SB I0 $1oole, 4089 $10so .512 $6C Wooho,k P40 $15RE BORE TO ADD20 -~ 47B Mo Molligo $12POE HANDLING BINS MODELOOMS QUICKEST MAIL SERVICE January 1976 73 Sflu 4 vOiCe PeiCtS SI 1401dfl AgO jflhjdLJLKjlilft ito UJA.n Ra.isteiisciaesi RI/Salt b0diiO. fS.mat 545 etitog *i MYIfl Shiv SRSet OfOpOSte-gO paid iSqflhRy Dtie
Edition: Model Aviation - 1976/01
Page Numbers: 14, 15, 16, 17, 72, 73
Straight lines simple structure commend 4 Bits builders whod like real going machine pylon has added advantage being good sport flier between races 14 Model Aviation four bits Designed Dave Jackson Text Bill Cranston ONE OF TI-IF popular fastest growing competitive events make RC scene long time Quickie 500 racing Basically Quickie 500 racing 500 sq 40-sized front-rotor en gine aircraft objective Quickie 500 racing provide closed course racing will encourage participation sport novice racing enthusiast lowest cost Racing aircraft lot fun fun shared average RCer Racing need require specialized hard build fly aircraft Racing aircraft will fun event such Quickie 500 provides average RCer oppor tunity Race simple easy build air craft Fly stable docile aircraft can sport flown well raced competitive stock out-ofthe-box 40 FR mill required virtually carveyour-own props mix-your-own blend secret fuel other specialized tech niques Formula boys use Race some assurance youve got just good chance win next RCer perhaps three four differ ent aircraft currently being flown Quickie 500 racing event air craft similar design 4 BITS departure designs 4 BITS shoulder wing 500 sq aircraft designed exclusively Quickie 500 racing Since introduction May 1975 ofthe4 BITS has win ners circle racing contest entered 4 BITS has proven stable competitive Quickie 500 racing air craft currently being flown Between rac ing weekends 4 BITS has doubled sport aircraft flying Fun-Flys just being flown fun flying Stable speed landings almost walk speed beginners experts agree 4 BITS fun aircraft sport flying aircraft Quickie 500 racing IuseIage assembly through step 11 instructions inner lamination sides 1/64 ply Plywood bottom fastened bench small brads Check parts squareness Assembly through step 19 instructions note 1f4 spacer rear locating fuselage exactly over centerline reference drawn board identical bends result both sides Winners 500 Club meet Auxiliary II Phoenix right left Bob Shaw Bill Cranston Mike Cooke Len Spina Three jobs right Quickie 500 and/or sport flying fine airplane 4 Bits Its placed meet entered extremely popularand successfulin Southwest Specifications Fuselage Shoulder wing box type laminated 1/64 ply superior strength rigid engine platform Engine Side mount 0-degree offset thrust Wing 500 sq excluding tips semisymmetrical 0-degree incidence Stab 18% wing area kness 0-degree incidence Weight 3 41/4 Ibs ready-to-fly less fuel Finish N4onoKote Solar Film racing conventional sport flying Construction Start construction studying plans construction steps woods ac cessones hobby shop items use new instant glues Cyanoacrylate such Hot Stuff Zap etc highly recommended except high stress areas Use epoxy glues areas use fast set epoxies particularly firewall area Fast epoxies allow adequate penetration especially joining plywoods Use epoxy glue called construction steps experience has proven necessity laminating 1/64 ply fuselage sides use 3M type 77 equivalent use water-based contact cement Dont additional beefing-up 4 BITS abnormally strong Beefing up will add unnecessary weight no increase strength Fuselage Cut out two fuselage sides /8 balsa sheeting Laminate 1/64 ply using contact cement balsa sides sure make right left side Note ar rows plans indicate fuselage sides bottom etc outlines 2 Mark location bulkhead #1 ply inner side fuselage sides 3 Glue alsa stringers ply side fuse sides Set aside dry 4 Cut out 3/32 ply bottom mark fore-aft center line Also mark location bulkhead #1 5 Cut Out firewall mark January 1976 15 Above Squared fuselage provides ample space ideal radio installation spite slim ness ship Below Neat installation aileron servo Holes nylon bolts Bill Cranston taching rpm side-mounted 40 engine before race racing ship covered two colors Monokote Solar Film Heavier covering can used sport flying Four Bits center line both vertically horizontally 6 Draw least 36 straight reference line work surface 7 Lay bottom 3/32 ply over ref erence line aligning center line ply bottom work surface reference line Using small brads nail ply bottom work surface Leave enough brad ex posed easy removal later 8 Cut out balsa #1 bulkhead sure balsa grain vertical glued ply bottom Glue #1 bulkhead place ply bottom making sure bulkhead square bottom 9 Cut out two /4 X a wingsaddle fuselage spacers Glue lower spacer ply bottom noting location plans Note 4 BITS does use bulkhead location L K 40 $42 /5 01 Si4 2 0 40 ZW40 0 014040 34 o 4140N 01 -J 240 0 auJ002 444 2 N. $4-I 4 0 440240 0 404040I014i40ZWO X404012 40 040 0 2 0 ii II /FX I3 -lit TFL z 2 4 4 4 2 2 0 2 4 F 1 V 0 44 4 4 $4ILI 0 40 0 -0 40 0 + I. 42 U 2 X 00 210 41 z t 0 4 0 I0 0 n01 24 04 40 040 o40 FT ni .440 IL WI -i4ZZZZ i z I 4- 5 4 y 4 44- 0140 16 Model Aviation 02 4040 10 Epoxy glue firewall ply bottom firewall flush front edge ply bottom Using square absolutely certain firewall true center line bottom ply true vertically 11 Cut out ply landing gear block Epoxy glue bottom butting up #1 bulkhead 12 After both firewall landing gear block epoxy has set glue fuse sides ply bottom Use epoxy glue firewall #1 bulkhead sure alsa fuselage stringers snug against ply bottom Use clamps firewall #1 bulkhead locations 13 Glue upper wing-saddle fuselage spacer location spacer will help keep fuselage sides true top 14 After fuselage assembly epoxy has set pull rear fuselage sides using scrap a spacer rear sure fuselage sides centered over work surface ref erence line Note Scrap a should tack glued place vertical fin location 15 Glue upper lower alsa rear fuselage spacers locations indicated plans omit spacers 16 Cut out ly pine front top block epoxy glue block fuselage firewall 17 Cut out hatch balsa Length 4 approximately 3 wide Length important 18 Cut out rear /16 hard balsa top block Balsa grain should crossways fuselage Sand rear edge top block approximately 45 degrees match wing saddle contour 19 Using hatch spacer epoxy glue rear top block #1 bulkhead fuselage sides glue hatch 20 Cut out I/g balsa fuselage rear top sheeting glue fuse 21 Allowing ample time fuselage assembly dry remove hatch pull brads remove assembly work surface 22 Invert fuselage glue tail wheel ply bracket support rear fuselage glue 1/8 balsa bottom sheeting fuse 23 Cut out two pruce hatch hold-down blocks Fit epoxy glue fuselage locations shown plans 24 Drill four s hatch locations shown plans plug holes ls Sand flush Use epoxy glue dowel plugs 25 Tack glue hatch fuselage 26 Sand entire fuselage rounding cor ners no greater ve scrap a rear fuselage until fuselage has sanded 27 Remove hatch epoxy glue alsa corner bracing top bottom firewall Wing 1 Make rib template 1/16 ply Note rib semi-symmetrical Mark bot tom ribs ribs cut out Make 16 1/16 ribs and4 3/32 ribs 2 Cut tape left wing plan right wing plan tape plans building surface wing built piece 3 Using 1/16 X balsa pine make two 25 shims Align rear shims rear spar indicated plans tape shim down 4 Make main spars pruce pine substitute balsa main spars Tape bottom par shim noting rear spar aligns rear shim 5 Assembling ribs over bottom spar glue ribs except two 3/32 center ribs two 1/16 center ribs sure ribs marking down 6 Glue top par ribs 7 Glue trailing edge stock ribs noting trailing-edge joint right wing cut center joint Note trailing edge made purchased pre-cut 1 k 8 Glue alsa sub-leading edge continued page 72 January 1976 17 Wing construction through step 10 wing assembly instruction Because no dihedral wing can assembled piece flat workbench Note ply joiner Completed wing ready tor sanding 0-section leading edge portion yields maximum strength warp resistance trailing edge laminated Note spar webs between inboard ribs Wing assembly through step 14 Note clamping method applying trailing edge sheeting Herd wood placed between clamp jaws balsa Use epoxy glue operation P R 0 D U CT S N C SVILLE ROAD OW GROVE PA 19090 659-3900 De-Lux CHICKEN STICKS last uch class chicken sticks fancy grip plastic tube touch yellow ch better color bloody fingers 6 package $125 shock read back package PROP-bC HI-TORK SPINNER Solve problem prop coming loose Get smoother idle Nylon spinner cone avail able 1/2 134 2 2VA 24 2/4 white black red Hardware kit available 4-24 4-28 6 mm 7 mm threads WANT TO START SOMETHING Hi-Tork Hi-RPM 12-volt starter has taken whole world storm Guaranteed two full years features higher torpue RPMs other starter heavy-duty long-life motor instant strip switch Four Bits continued provide epoxy lock 2 Bending aluminum brackets slightly outward provide snug fit fuselage install dont glue blocks fuselage approximate locations 3 Install wing fuselage taking ex treme care wing alignment Rubberband wing position satisfied alignment mark bottom wing along fuselage sides future reference 4 Through wing hold-down bolt holes mark location wing hold-down blocks fuselage pencil about 2 lead useful 5 Remove wing check marks center wing-hold down blocks Move blocks fuselage until marks centered install wing mark check satisfied mark wing hold-down aluminum bracket locations fuse 6 Remove blocks drill 13/64 tapping hole secure blocks position using epoxy glue fiberglass Fiberglass must used 7 Re-install wing position tap four wing block holes ap Tap through wing bolt holes far pos sible tap remove wing finish tap procedure will help correct misalignment wing bolt holes drilled wing StabilizerVertical Fin Construct stabilizer vertical fin control surfaces dorsal fairings a sheeting shown plans 2 Glue tips stab vertical fin Tack glue rudder elevator sand stab vertical fin shape Note control surfaces tapered StabilizerFin Installation Slide stabilizer cut-out fuse lage Make sure stab centered fuselage Measure stabilizer tips fuselage center-line firewall Mark bottom stabilizer reference 2 Install wing place slide stabilizer place after end fuselage slide forward observing wing-stab rela tionship sure wing/stabilizer appears parallel Sand either cut-out necessary 3 Check stabilizer incidence yard stick placed top stabilizer along side fuselage will line up w lowest portion wing saddle 4 satisfied stabilizer loca tion incidence glue stabilizer place 5 Slide vertical fin place check squareness stabilizer using square glue fin place 6 Glue dorsal fairing vertical fin fuselage fairings stabilizer-fuselage sand Control SurfacesHinging control surfaces should beveled leading edge indicated plans Beveled amount should allow surface move about 30 degrees either side center use living hinges recom mended type hinge will keep hinge gap minimum now allow wide hinge gaps especially aileron elevator Use least four hinges elevator three per aileron two rudder Instant glue makes easy hinge installation Landing Gear Either purchase landing gear pre-formed make template shown plans Secure gear fuselage least two ylon bolts Drill tap fuselage landing gear block Use 2 main gear wheels wheel Engine Mount Fuel Tank Side-mount engine type mounting provides correct carburetor-fuel tank relationship sure check engine offset down-thrust slight amount right-off set two degrees max wont hurt no downth rust Finishing recommended aircraft finish MonoKote Solar Film etc weight consideration type finish will add appreciable weight second ease repair durable also allows complete sealing hingeline gap CG Set CG indicated plans 4 BITS raced allow CG limits vary plus minus htly forward acceptable recommended balance point never 72 Model Aviation GLOW PLUG KLIP . Got Together Now fully assembled convenience unbreakable Glow Plug Klip still carries same unconditional guar antee ever breaks well replace free 39GC Cox Testors other l/2A engines 4OGC 09 80 engines anaaes 01 ola-Time air racing ianaing wing tip 4 Bits rounds pylon Electronic Flight Timer S12SO-hit $17SO-assenbId SKIPPED VIA FIRST CLASS MAIL FULL ONE YEAR GUARANTEE ACTUAL SIZE ONLY II58 TESTED & APPROVED K IRK LAND WA 9E033 cially aft Slide bat tery servos etc fore-afi obtain balance point Remember check CG accessories installed pushrods fuel tank prop etc Control Surface Movements Initially set up surface movements follow ing Elevator Aileron -3/16 up down Rudder % right left Radio Installation Use servo trays possible 4 BITS will accept three KPS-12 type servos mounted side-by-side tray Use aileron servo side mount bracket Wrap battery foam install receiver-servo area use NyRod acceptable rudder pushrod should used elevator sure aileron control horns free after installation wing Some filing wing hold-down blocks may necessary Use flex cable engine throttle hook-up Flying 4 BITS will very re sponsive Set control surface movements suit individual preference never set response allow snap-roll aircraft raced find point increase elevator throw until snap-roll obtained back-off hole control horn general sport flying set control surface movements limited flying ability Always however start out soft controls Youll find 4 BITS fun aircraft youve ever flown racing watch out guys -Korda/Oldenkamp continued page 40 winds down free-wheeling begins particularly shaft gets bent little landing knock vibration sets An easy way cure since nose plug gets lot wear simply cant made lit forever coat fiveminute epoxy slip place pull out let dry doesnt work put piece masking tape top outer joint just after winding point being noseplug should free fall out airplane hits something gets upset upon landing References Balsa plywood spruce music wire rubber strip dowels tubing tissue Lite-Coat dope rubber lubricant etc available directly Sig Manu facturing Co Montezuma Iowa local hobby shops Sandpaper Titebond glue Five-Mm ute Epoxy glue--from variety hardware stores Plastic Propellers Peck-Polymers has some excellent units up 9/2 diameter Peck-Polymers P0 Box 2498 La Mesa Ca 92041 Rubber Winding Hook Jim Crockett Replicas l442 N Fruit Ave Fresno Ca 93728 PermaGloss Coverite may newest revolution covering material Heres unsolicited testimonial editor RC Modeler Mr Don Dewey quote part August 1975 issue .. iron-on plastic fabrics several minor dis advantages Among high gloss plastic look could hidden several coats exhaust residue addition materials have tendency sag during periods extreme humidity changes. d like have next model covered fabric far stronger silk covers up minor surface imperfections actually contains four coats paint realistic painted fabric appearance no plastic sheen will never shatter sag scratch best all have iron sanded framework l find aircraft covered Coverite PermaGloss will have lightest yet strongest coverings can possibly apply addition will have painted fabric appearance would find difficult equal silk dope aircraft particularly strength-to-weight ratio w standpoint realistic appearance strength durability ease repair mention ease application aGloss may newest revolution covering materials C0Vi-i i Chestnut St Phila Pa 19106 U QUE PLANS FOR GAS MODELERS PRICE INCLUDE PATTERNO 42 Eoig P26A $14 . 45 BOio 940-3 P12 $9 0ip OR] $7 47 C Bk P4-E $15 pod XIII $10 47 Oohook F11C-2 $15 l 17 $9 47 CoIC BeIIdie $11 Pp $8 48 GM GlodMbe $10 OHBoo 0 $9 49 SI Koode P017 $10 FBI 2B6C $11 $0 Polith Fl PO $10 rpe 46 Plo] DIII 50, $9 82 Slooo TW SB7 $10 Sop 07F1$11 $7 Co 010 FoIoo $15 54 MoMB-i$14 57 CoSO2C1 Soo $14 57 Boote 0,i0oiI$95B Boejo0B9Boobe$9 6AEGGVBoobeS1260Doog 0-SB00$$12 ___66 Coo 2GSI1ockef5F1 $14 $20 07 Liod Look Siio $12 $94610MOBE 4B Mc 109K Fl025 $20 2$ $25 50Doog 0i OCS$25 * 50Fo 5170 $2 5149SB I0 $1oole, 4089 $10so .512 $6C Wooho,k P40 $15RE BORE TO ADD20 -~ 47B Mo Molligo $12POE HANDLING BINS MODELOOMS QUICKEST MAIL SERVICE January 1976 73 Sflu 4 vOiCe PeiCtS SI 1401dfl AgO jflhjdLJLKjlilft ito UJA.n Ra.isteiisciaesi RI/Salt b0diiO. fS.mat 545 etitog *i MYIfl Shiv SRSet OfOpOSte-gO paid iSqflhRy Dtie
Edition: Model Aviation - 1976/01
Page Numbers: 14, 15, 16, 17, 72, 73
Straight lines simple structure commend 4 Bits builders whod like real going machine pylon has added advantage being good sport flier between races 14 Model Aviation four bits Designed Dave Jackson Text Bill Cranston ONE OF TI-IF popular fastest growing competitive events make RC scene long time Quickie 500 racing Basically Quickie 500 racing 500 sq 40-sized front-rotor en gine aircraft objective Quickie 500 racing provide closed course racing will encourage participation sport novice racing enthusiast lowest cost Racing aircraft lot fun fun shared average RCer Racing need require specialized hard build fly aircraft Racing aircraft will fun event such Quickie 500 provides average RCer oppor tunity Race simple easy build air craft Fly stable docile aircraft can sport flown well raced competitive stock out-ofthe-box 40 FR mill required virtually carveyour-own props mix-your-own blend secret fuel other specialized tech niques Formula boys use Race some assurance youve got just good chance win next RCer perhaps three four differ ent aircraft currently being flown Quickie 500 racing event air craft similar design 4 BITS departure designs 4 BITS shoulder wing 500 sq aircraft designed exclusively Quickie 500 racing Since introduction May 1975 ofthe4 BITS has win ners circle racing contest entered 4 BITS has proven stable competitive Quickie 500 racing air craft currently being flown Between rac ing weekends 4 BITS has doubled sport aircraft flying Fun-Flys just being flown fun flying Stable speed landings almost walk speed beginners experts agree 4 BITS fun aircraft sport flying aircraft Quickie 500 racing IuseIage assembly through step 11 instructions inner lamination sides 1/64 ply Plywood bottom fastened bench small brads Check parts squareness Assembly through step 19 instructions note 1f4 spacer rear locating fuselage exactly over centerline reference drawn board identical bends result both sides Winners 500 Club meet Auxiliary II Phoenix right left Bob Shaw Bill Cranston Mike Cooke Len Spina Three jobs right Quickie 500 and/or sport flying fine airplane 4 Bits Its placed meet entered extremely popularand successfulin Southwest Specifications Fuselage Shoulder wing box type laminated 1/64 ply superior strength rigid engine platform Engine Side mount 0-degree offset thrust Wing 500 sq excluding tips semisymmetrical 0-degree incidence Stab 18% wing area kness 0-degree incidence Weight 3 41/4 Ibs ready-to-fly less fuel Finish N4onoKote Solar Film racing conventional sport flying Construction Start construction studying plans construction steps woods ac cessones hobby shop items use new instant glues Cyanoacrylate such Hot Stuff Zap etc highly recommended except high stress areas Use epoxy glues areas use fast set epoxies particularly firewall area Fast epoxies allow adequate penetration especially joining plywoods Use epoxy glue called construction steps experience has proven necessity laminating 1/64 ply fuselage sides use 3M type 77 equivalent use water-based contact cement Dont additional beefing-up 4 BITS abnormally strong Beefing up will add unnecessary weight no increase strength Fuselage Cut out two fuselage sides /8 balsa sheeting Laminate 1/64 ply using contact cement balsa sides sure make right left side Note ar rows plans indicate fuselage sides bottom etc outlines 2 Mark location bulkhead #1 ply inner side fuselage sides 3 Glue alsa stringers ply side fuse sides Set aside dry 4 Cut out 3/32 ply bottom mark fore-aft center line Also mark location bulkhead #1 5 Cut Out firewall mark January 1976 15 Above Squared fuselage provides ample space ideal radio installation spite slim ness ship Below Neat installation aileron servo Holes nylon bolts Bill Cranston taching rpm side-mounted 40 engine before race racing ship covered two colors Monokote Solar Film Heavier covering can used sport flying Four Bits center line both vertically horizontally 6 Draw least 36 straight reference line work surface 7 Lay bottom 3/32 ply over ref erence line aligning center line ply bottom work surface reference line Using small brads nail ply bottom work surface Leave enough brad ex posed easy removal later 8 Cut out balsa #1 bulkhead sure balsa grain vertical glued ply bottom Glue #1 bulkhead place ply bottom making sure bulkhead square bottom 9 Cut out two /4 X a wingsaddle fuselage spacers Glue lower spacer ply bottom noting location plans Note 4 BITS does use bulkhead location L K 40 $42 /5 01 Si4 2 0 40 ZW40 0 014040 34 o 4140N 01 -J 240 0 auJ002 444 2 N. $4-I 4 0 440240 0 404040I014i40ZWO X404012 40 040 0 2 0 ii II /FX I3 -lit TFL z 2 4 4 4 2 2 0 2 4 F 1 V 0 44 4 4 $4ILI 0 40 0 -0 40 0 + I. 42 U 2 X 00 210 41 z t 0 4 0 I0 0 n01 24 04 40 040 o40 FT ni .440 IL WI -i4ZZZZ i z I 4- 5 4 y 4 44- 0140 16 Model Aviation 02 4040 10 Epoxy glue firewall ply bottom firewall flush front edge ply bottom Using square absolutely certain firewall true center line bottom ply true vertically 11 Cut out ply landing gear block Epoxy glue bottom butting up #1 bulkhead 12 After both firewall landing gear block epoxy has set glue fuse sides ply bottom Use epoxy glue firewall #1 bulkhead sure alsa fuselage stringers snug against ply bottom Use clamps firewall #1 bulkhead locations 13 Glue upper wing-saddle fuselage spacer location spacer will help keep fuselage sides true top 14 After fuselage assembly epoxy has set pull rear fuselage sides using scrap a spacer rear sure fuselage sides centered over work surface ref erence line Note Scrap a should tack glued place vertical fin location 15 Glue upper lower alsa rear fuselage spacers locations indicated plans omit spacers 16 Cut out ly pine front top block epoxy glue block fuselage firewall 17 Cut out hatch balsa Length 4 approximately 3 wide Length important 18 Cut out rear /16 hard balsa top block Balsa grain should crossways fuselage Sand rear edge top block approximately 45 degrees match wing saddle contour 19 Using hatch spacer epoxy glue rear top block #1 bulkhead fuselage sides glue hatch 20 Cut out I/g balsa fuselage rear top sheeting glue fuse 21 Allowing ample time fuselage assembly dry remove hatch pull brads remove assembly work surface 22 Invert fuselage glue tail wheel ply bracket support rear fuselage glue 1/8 balsa bottom sheeting fuse 23 Cut out two pruce hatch hold-down blocks Fit epoxy glue fuselage locations shown plans 24 Drill four s hatch locations shown plans plug holes ls Sand flush Use epoxy glue dowel plugs 25 Tack glue hatch fuselage 26 Sand entire fuselage rounding cor ners no greater ve scrap a rear fuselage until fuselage has sanded 27 Remove hatch epoxy glue alsa corner bracing top bottom firewall Wing 1 Make rib template 1/16 ply Note rib semi-symmetrical Mark bot tom ribs ribs cut out Make 16 1/16 ribs and4 3/32 ribs 2 Cut tape left wing plan right wing plan tape plans building surface wing built piece 3 Using 1/16 X balsa pine make two 25 shims Align rear shims rear spar indicated plans tape shim down 4 Make main spars pruce pine substitute balsa main spars Tape bottom par shim noting rear spar aligns rear shim 5 Assembling ribs over bottom spar glue ribs except two 3/32 center ribs two 1/16 center ribs sure ribs marking down 6 Glue top par ribs 7 Glue trailing edge stock ribs noting trailing-edge joint right wing cut center joint Note trailing edge made purchased pre-cut 1 k 8 Glue alsa sub-leading edge continued page 72 January 1976 17 Wing construction through step 10 wing assembly instruction Because no dihedral wing can assembled piece flat workbench Note ply joiner Completed wing ready tor sanding 0-section leading edge portion yields maximum strength warp resistance trailing edge laminated Note spar webs between inboard ribs Wing assembly through step 14 Note clamping method applying trailing edge sheeting Herd wood placed between clamp jaws balsa Use epoxy glue operation P R 0 D U CT S N C SVILLE ROAD OW GROVE PA 19090 659-3900 De-Lux CHICKEN STICKS last uch class chicken sticks fancy grip plastic tube touch yellow ch better color bloody fingers 6 package $125 shock read back package PROP-bC HI-TORK SPINNER Solve problem prop coming loose Get smoother idle Nylon spinner cone avail able 1/2 134 2 2VA 24 2/4 white black red Hardware kit available 4-24 4-28 6 mm 7 mm threads WANT TO START SOMETHING Hi-Tork Hi-RPM 12-volt starter has taken whole world storm Guaranteed two full years features higher torpue RPMs other starter heavy-duty long-life motor instant strip switch Four Bits continued provide epoxy lock 2 Bending aluminum brackets slightly outward provide snug fit fuselage install dont glue blocks fuselage approximate locations 3 Install wing fuselage taking ex treme care wing alignment Rubberband wing position satisfied alignment mark bottom wing along fuselage sides future reference 4 Through wing hold-down bolt holes mark location wing hold-down blocks fuselage pencil about 2 lead useful 5 Remove wing check marks center wing-hold down blocks Move blocks fuselage until marks centered install wing mark check satisfied mark wing hold-down aluminum bracket locations fuse 6 Remove blocks drill 13/64 tapping hole secure blocks position using epoxy glue fiberglass Fiberglass must used 7 Re-install wing position tap four wing block holes ap Tap through wing bolt holes far pos sible tap remove wing finish tap procedure will help correct misalignment wing bolt holes drilled wing StabilizerVertical Fin Construct stabilizer vertical fin control surfaces dorsal fairings a sheeting shown plans 2 Glue tips stab vertical fin Tack glue rudder elevator sand stab vertical fin shape Note control surfaces tapered StabilizerFin Installation Slide stabilizer cut-out fuse lage Make sure stab centered fuselage Measure stabilizer tips fuselage center-line firewall Mark bottom stabilizer reference 2 Install wing place slide stabilizer place after end fuselage slide forward observing wing-stab rela tionship sure wing/stabilizer appears parallel Sand either cut-out necessary 3 Check stabilizer incidence yard stick placed top stabilizer along side fuselage will line up w lowest portion wing saddle 4 satisfied stabilizer loca tion incidence glue stabilizer place 5 Slide vertical fin place check squareness stabilizer using square glue fin place 6 Glue dorsal fairing vertical fin fuselage fairings stabilizer-fuselage sand Control SurfacesHinging control surfaces should beveled leading edge indicated plans Beveled amount should allow surface move about 30 degrees either side center use living hinges recom mended type hinge will keep hinge gap minimum now allow wide hinge gaps especially aileron elevator Use least four hinges elevator three per aileron two rudder Instant glue makes easy hinge installation Landing Gear Either purchase landing gear pre-formed make template shown plans Secure gear fuselage least two ylon bolts Drill tap fuselage landing gear block Use 2 main gear wheels wheel Engine Mount Fuel Tank Side-mount engine type mounting provides correct carburetor-fuel tank relationship sure check engine offset down-thrust slight amount right-off set two degrees max wont hurt no downth rust Finishing recommended aircraft finish MonoKote Solar Film etc weight consideration type finish will add appreciable weight second ease repair durable also allows complete sealing hingeline gap CG Set CG indicated plans 4 BITS raced allow CG limits vary plus minus htly forward acceptable recommended balance point never 72 Model Aviation GLOW PLUG KLIP . Got Together Now fully assembled convenience unbreakable Glow Plug Klip still carries same unconditional guar antee ever breaks well replace free 39GC Cox Testors other l/2A engines 4OGC 09 80 engines anaaes 01 ola-Time air racing ianaing wing tip 4 Bits rounds pylon Electronic Flight Timer S12SO-hit $17SO-assenbId SKIPPED VIA FIRST CLASS MAIL FULL ONE YEAR GUARANTEE ACTUAL SIZE ONLY II58 TESTED & APPROVED K IRK LAND WA 9E033 cially aft Slide bat tery servos etc fore-afi obtain balance point Remember check CG accessories installed pushrods fuel tank prop etc Control Surface Movements Initially set up surface movements follow ing Elevator Aileron -3/16 up down Rudder % right left Radio Installation Use servo trays possible 4 BITS will accept three KPS-12 type servos mounted side-by-side tray Use aileron servo side mount bracket Wrap battery foam install receiver-servo area use NyRod acceptable rudder pushrod should used elevator sure aileron control horns free after installation wing Some filing wing hold-down blocks may necessary Use flex cable engine throttle hook-up Flying 4 BITS will very re sponsive Set control surface movements suit individual preference never set response allow snap-roll aircraft raced find point increase elevator throw until snap-roll obtained back-off hole control horn general sport flying set control surface movements limited flying ability Always however start out soft controls Youll find 4 BITS fun aircraft youve ever flown racing watch out guys -Korda/Oldenkamp continued page 40 winds down free-wheeling begins particularly shaft gets bent little landing knock vibration sets An easy way cure since nose plug gets lot wear simply cant made lit forever coat fiveminute epoxy slip place pull out let dry doesnt work put piece masking tape top outer joint just after winding point being noseplug should free fall out airplane hits something gets upset upon landing References Balsa plywood spruce music wire rubber strip dowels tubing tissue Lite-Coat dope rubber lubricant etc available directly Sig Manu facturing Co Montezuma Iowa local hobby shops Sandpaper Titebond glue Five-Mm ute Epoxy glue--from variety hardware stores Plastic Propellers Peck-Polymers has some excellent units up 9/2 diameter Peck-Polymers P0 Box 2498 La Mesa Ca 92041 Rubber Winding Hook Jim Crockett Replicas l442 N Fruit Ave Fresno Ca 93728 PermaGloss Coverite may newest revolution covering material Heres unsolicited testimonial editor RC Modeler Mr Don Dewey quote part August 1975 issue .. iron-on plastic fabrics several minor dis advantages Among high gloss plastic look could hidden several coats exhaust residue addition materials have tendency sag during periods extreme humidity changes. d like have next model covered fabric far stronger silk covers up minor surface imperfections actually contains four coats paint realistic painted fabric appearance no plastic sheen will never shatter sag scratch best all have iron sanded framework l find aircraft covered Coverite PermaGloss will have lightest yet strongest coverings can possibly apply addition will have painted fabric appearance would find difficult equal silk dope aircraft particularly strength-to-weight ratio w standpoint realistic appearance strength durability ease repair mention ease application aGloss may newest revolution covering materials C0Vi-i i Chestnut St Phila Pa 19106 U QUE PLANS FOR GAS MODELERS PRICE INCLUDE PATTERNO 42 Eoig P26A $14 . 45 BOio 940-3 P12 $9 0ip OR] $7 47 C Bk P4-E $15 pod XIII $10 47 Oohook F11C-2 $15 l 17 $9 47 CoIC BeIIdie $11 Pp $8 48 GM GlodMbe $10 OHBoo 0 $9 49 SI Koode P017 $10 FBI 2B6C $11 $0 Polith Fl PO $10 rpe 46 Plo] DIII 50, $9 82 Slooo TW SB7 $10 Sop 07F1$11 $7 Co 010 FoIoo $15 54 MoMB-i$14 57 CoSO2C1 Soo $14 57 Boote 0,i0oiI$95B Boejo0B9Boobe$9 6AEGGVBoobeS1260Doog 0-SB00$$12 ___66 Coo 2GSI1ockef5F1 $14 $20 07 Liod Look Siio $12 $94610MOBE 4B Mc 109K Fl025 $20 2$ $25 50Doog 0i OCS$25 * 50Fo 5170 $2 5149SB I0 $1oole, 4089 $10so .512 $6C Wooho,k P40 $15RE BORE TO ADD20 -~ 47B Mo Molligo $12POE HANDLING BINS MODELOOMS QUICKEST MAIL SERVICE January 1976 73 Sflu 4 vOiCe PeiCtS SI 1401dfl AgO jflhjdLJLKjlilft ito UJA.n Ra.isteiisciaesi RI/Salt b0diiO. fS.mat 545 etitog *i MYIfl Shiv SRSet OfOpOSte-gO paid iSqflhRy Dtie