Radio Control: Scale

U k Scale 0 Bob Dolly Wischer THE DC/RC CLUB Washington D C area conducted its first annual scale meet Bealton Va Flying Circus Aerodrome September promises become another great scale contest footsteps already famous Rhinebeck series Twenty-five entrants flew four classes including Sport Scale Y2A Sail plane new Team Scale event builder must flier hoped latter arrangement will bring out excellent scale projects too often produced builders proficient fliers team concept being expounded cure ills competition get some hangar queens out onto flying field common country-wide trend entries tail-draggers Sport Scale won Don Srull flying same Dornier 23G 0S-powered twin placed third Riverside Nats Brown B-2 Racer Bill Hinnant finished second Bill accomplished pattern flier Brown fast stable flight 1911 Avro D flown third place George Marsden spite crash after low level stall turn awarded Best-of-Show trophy included five-channel R-S Systems radio First place team event won builder Russ Hibbard Nieu port 28 flown Dave Hibbard An SE-5 Frank Goodwin Vance Hurd pilot placed second Hurst Bowers Continued page 89 Plexiglas die forming corrugated sheets used Waco ailerons shown top left its right untrimmed molded strut cuff Mounted wood form right produced cuff seconds heat vacuum Above Steps producing pilots cap left balsa mold fish-line seams center trimmed styrene cap right finished cap colored paper visor Right Plastic foam pilot styrene cap boots cloth scraps clothing14 long weight ounce Taxiing Z-pound Mud flJosen-kit Mr Mulligan idrby Lrawtord DC/RC Bealton caie Meet KGL IAT LA /4#u0ace4 7th Annual Pre-Season Radio System Check-up Pcs Valid until May 15 1978 FULL TIME TECHNICIANS FACTORY TRAINED ST TEST EQUIPMENT NEW MODERN SHOP ONLY GENUINE FACTORY PARTS SFACTION GUARANTEED r PRE-SEASOV SPECIAL ONLY $2495 plus postaqe Less AMA Coupon Repair Net Cost Perform Transmitter Battery Load Check Perform Transmitter Crystal Frequency Count Perform Receiver Battery Load Check Check Battery Charging Circuit Tune Transmitter R F Check Receiver Sensitivity & Adjust Align Receiver RF IF Stages Check Receiver Logic Align Transmitter Encoder Check Servo Stalled Motor Current Repair parts additional Check Servo Mechanics Adjust Servo Centering Perform System Servo Noise Check Shock Test Complete Airborne System Range Check System System Flight Test Necessary Kraft Great Lakes Inc 6787 Wales Ave PO Box 2482 North CantonOhio 44720 BankAmericard Master Charge Welcome gj Mark Porter Dave Male 216 499-8310 Aez404e41 CWCe having spectator young good looking female attempt fly Daves airplane no assistance airplane suffered indignity near-misses lot staggering aroundall ac tually performed Tom still hidden crowd enjoyed shows us got some good ideas air shows own After building new Royal Electronics Corp two-channel receiv ers Id like thank George Myers encouraging non electronics-oriented RC fliers build Radio Technique September 1977 Mine went together very quickly worked first time switched addition certainly agree four-channel conversion should made before integrated cir cuit installed four-channel con version costs $195 builders will probably want build way small soldering iron l/16in tip should used preclude getting solder bridges circuit board New Orleans contest talked Stan John longtime contest director Crescent City R/C Club discussing what takes have popular contest poor contests dont last long competition fliers pass word about bad contests faster about good ones obvious criteria come mind flying site contest admin istration judging weather food just about standard CCRCC con test very good just put 16th annual contest obviously have experience knowledge put fine meet October weather great along Gulf Coast say finest season year club puts food fests Friday Saturday night free contestants family So Stan John wonder ing New Orleans contests always have rather modest attendance As kind hope New Orleans Fall Carnival stays well kept secret us regular attenders Maybe way will have chance place top three Advanced next year Ron Van Puue 12 Connie Dr Shal imar FL 32579 RC Scale/Wischers continued page 26 Boeing F4B2 also piloted Dave Hib bard finished third scale plane attracted attention didnt com pete contest quarter-scale Mr Mulligan Nosen kit flown Kirby Crawford model airshow followed meet 23 pounds did meet rule requirements Power 16 cu Roper chain-saw engine ignition shielded Kraft radio aluminum firewall Sat urday flying followed charcoal broiled hamburger hot dog cookout hangar party Vacuum Forming Small Parts Producing light-weight small plastic parts aid Mattel Vac-U-Form toy has advantages Parts can reproduced quantity minimum cost effort part exactly like mold duplicate preceding part Its possibilities limited users imagination easiest material form 010 0 15 thick sheet styrene ob tainable hobby shops art stores plastic supply houses Other mater ials formable such clear acetate butyrate sheet making transparent parts Vac-U-Form toy popu lar 20 years back still available stores sell recondi tioned toys Try garage rummage sales thrift shop Another source might store factory bulletin board machine cost 25 cents local Goodwill Store would bargain ten times amount machine consists February 1978 89 KRAFT $2495 500 $1995 frame holding 3 X 3 sheet plastic over heating element mount form single-stroke vacuum pump mounted box support buying used check oper ation element pump pump pulls heated plastic over form instantly produce part form must have slightly tapered sides known draft angle order extract molded part first uses made tool production two dozen sheets corrugated shape ailerons Waco Cabin YKS-6 3 length lim itation meant three pieces re quired surface joints invisible made along corrugation material used form 1/4 Plexiglas acrylic sheet chosen because gives very sharp corners impression produces its smoothness leaves no blemishes finished part dense hardwood such birch would likely have done well Grooves exact depth spacing machined Plexiglas hollowground blade circular table saw set 45 degrees just barely extending above saw table edge Plexiglas cut away saw connect corrugation grooves air flow single hole drilled area evacuate air pump dur ing forming process Plexiglas form set support provided Vac-U-Form held place two layers masking tape tape serves vacuum seal After sytrene part formed cut shape scissors fastened hollow balsa ailerons epoxy cement Dummy pilots can esisily molded cluding clothing shoes using parts dolls molds complete pilot made manner will weigh less ounce mold pilots cap can carved sanded balsa since absolutely smooth cap really desir able Wood grain balsa other softwood will offset styrene visible seams cap can repro duced cementing pieces fish line across top wood mold cap completed addition con struction paper visor held place contact cement Ordinary model cement dope will dissolve styrene can sprayed light dry coats dope out damage wet coat will cause warping change shape Enamel epoxy other paints harm less styrene Navigation lights best molded clear butyrate sheet red green color can applied inside give appearance transparent lenses Some strobe lights have shape will permit molding have ring lens will lock mold lens cannot extracted respect vacuum molding same other type parts cannot re moved back draft con dition exists whenever part smaller base top draft angle taper must used sides mold easy extraction part Small fairings strut cuffs louvers spection covers air scoops hinges doors can duplicated quantity minimum weight penalty rud der cable lead-out fairing fastened place screws can have screw heads reproduced part fairing adding pin heads mold part requires trimming painting fore cementing place New Competition Class stimulating suggestion new competition class semi-scale models offered Bob Lopshire Innovators Class plane need modeled after specific prototype may combination several planes different manu facturers purpose create new plane scale-like appearance may closely resemble particular air craft may bear similarity main idea bring back true fun RC class features Bob advocates combining two people team designer-builder other pilot Builder pilot would need team least two years lose standing class builder pilot could same person divi sion homebuilders either division plane would judged scalelike flight ingenuity realistic appearance would interesting see what scale modelers could produce giv en free reign designing planes own ideas hindrance having faithfully copy existing design Bob Wischer Ri 5-221 Lapham Peak Rd Delafield WI 53018 RC Pylon/Lane continued page 27 very difficult keep up airplane speed wonder will end firmly believe majority Formula pilots capable handling Formula ship speeds guys will think about times have seen guy very fast plane get trouble because could stay ahead Maybe should consider milder fuel stock props method keeping speed down allow little mar gin safety dont lose event expect will get blast few diehards believe all-out speed can appreciate feelings am looking preservation event people will participate Think about let know what ideas issue slowing down Formula keeping QM stated 1976-1977 AMA Rule Book Dave Lane 4477 W 136th St Haw thorne CA 90250 RC Helicopters/Schoonard continued page 28 Hardener Also couple sheets #600 grit wet-or-dry sandpaper Using color selected base color spray entire helicopter until coy90 Model Aviation Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground GREATEST B/C zBASIC TBAINER Design & Kit ALL TIME Ask over 25000 satisfied builders H-BAY dealers sold themSHALL WE SAY MORE Andresvs Airoraft Model Co Inc US Ete 1& Noeth St Topsfield Mass 01983 881-8541 Price $3995 kit per dollar bar em all