Free Flight: Duration

STAYING UP Quinn Now its spring Free Flighters fancy turns thoughts knee high grass blue skies anticipation summer contest trail opportunity bring out new-machines confined basement garage Southern California blessed legendary tall green stuff thousand acres border area field thanks recent monsoons winter building frenzy yielded two Coupes big Mulvihill P-30 BoomBox No 5 Im anxious anyone get out serious testing Lost Hill FAI Team Selection Finals observed Jim Quinns airfoil used very successful Fantasy Wakefield design gained lot followers fact present two team qualifiers craft Roger Maves George Xenakis first alternate Bob Milligans too much difficulty posting fourS Quinns derivation Gard 7510 shown tracing directly Cygnet Soft ware computer printout Note thickness distribution turbulator placements Top left Wakefield Coupe Reverse Montreal hubs manufac tured designer John Morrill Very easy installation low maintenance Close up bottom left Morrill Wakefield Hub seen US Wakefield Team member Norm Furutanis latest craft will flown FF World Champs Yugoslavia 1991 Above isometric Morrill hub 56 Model Aviation Duration John Oldenkamp 3331 Adams Avenue San Diego CA 92116 During Easter Sunday test session author holds up latest Coupe dHiver P30 ships Quinn-87 airfoil clearly evident both planes Carin Howard Photo GARD 7510 Morrill FiB Hub minute flights under very marginal lift conditions Altitudes under power impressive glide superb Mentally storing holed up workshop made five planes chords ranging 36 58 just see could better beloved USA 5 cum Simplex reverse 7% bottom foils Eureka case no exaggeration now have direct powerful climbs much improved glides course confidence starting line could wind max torque find silly thermals Quinn-87 illustrated modification very popular Gard 7510 forward upper camber much reduced lower 70% thickened somewhat provide structural integrity leading edge sharp dares trailing edge relatively blunt thick accommodate either rectangular monocoque format Some caveats airfoil must flown about 65% balance point should turbulated shown must accompanied stabilizer rounded Phillips entry leading edge lest lots stally whoop-de-dos occur turbulence will Recent cottage industry samplings As alluded BoomBox piece Model Aviation July 1990 flock new products have come downstream First among quite apropos Quinn-87 discussion above updated version Foiled Again computer software program designed Free Flighters Pauline Bernard Crowe doing business Cygnet Software 24843 Del Prado Suite 141 Dana Point California 92629 illustrations printed traced program contains several hundred public domain airfoils Quinn-87 Gard 7510 among can used IBM compatibles plus dot-matrix outputs plot straight diagonal thicken glim modify extraordinary menu outlines Mail order price $4495 plus California sales tax residents Continued page 173 July 1991 57 tarIine Internationals VEI ngtne Hun liner Mirror image photo left shows quality interior parts other key features Thumb fingers give good idea size Milled aluminum stabilizer mounts Starline Perforations allow adhesive build-up safe operation unit may recessed tailpiane mounted flush bottom Useful thrust bearing sets P-30 props Champion Model Products oseoioc snows typical use ingenious right/left winder Old Time Twin Pushers developed San Diego Orbiteer Fudo Takagi Unit adapts standard -in hand drill chuck made last IRIL Quality kit SALE $9995 LIST $ 139~ SALE LIST $1 19~ SALE $7995 LIST 114~ SALE $7995 LIST 114~ Ask Co sea IC aC local dealer available order direct GARDEN 1731 NW Madrid Way Boca Raton FL 33432 Call Anytime 407-367-7744 Free Catalog MasterCard VISA Accepted good place digress bit suggest before getting too far electrification process take hard look fuselage design model have chosen moments some other details Seniorita just right such conversion Some models however have relatively short nose moments could make very hard get final balance right such cases might consider forward location added front former wilt allow shift battery pack farther forward necessary attain desired CG location Another problem some designs fuselage sides cabin area parallel Indeed some fuselages rather shapely bowed sides cabin area Nevertheless suggest use side rails immobilize battery side-toContinued oil page 174 FF Duration/Oldenkamp Continued page 56 John Morrill has already given us durable efficient Sidewinder rubber winder Simple Stooge universal necessities Gumbanders now offers two elegantly engineered reverse Montreal stop front hubs Wakefield Coupe dHiver fail-safe utterly simple lightweight 21 7 THE SUPERIOR GLOW PLUGS GO FASTFLYERSAREBACKII Puts sting eng ne Unique flat-wound spiral coil element high temperature glass-to-metal seal add up faster ignition increased RPM 1/2A GloBee plugs designed exclusively 0491051 Cox engines Ask new GB-5RX Speed Plug GB-5R Racing Plug GB-5P Sport Plug local dealer today unavailable locally write call Twinn-K collect pricing delivery information FREE GloBee Catalog MAKE THE GLOBEE INDY CONNECTION Twinn-K Inc 10296 W Washington St Indianapolis IN 46231 Telephone 317-839-6579 FAX 317-839-8928 grams respectively Fussy types can lighten bit Dremel tool use Mulvihill projects desired Carefully crafted field strippable under minute huge bargain investment assuring proper fold time $2450 Wake $1950 Coupe direct John Morrill Miniature Engines 143 Richmond Street El Segundo California 90245 Gas enthusiasts will praise Sal Frucianos latest import super high quality enginerun timer PMT features mousetrap-like action closes down fuel line should positively end full tank disasters unit lovingly machined stamped edges rolled much thick brass evidence on-off switch works good feel plus machined fitting supports both ends fuel line Weight 14 grams settings 0 30 seconds Adding Sals line pair superlight stabilizer platforms fit both square circular tail booms FAI Gas Rubber Nordic hinged pull-apart units hardened steel bearing-wire axle long life smooth pop-up Easy installation cyanoacrylate epoxy weigh two grams Very slick Sals company Starline International 6146 East Cactus Wren Road Scottsdale Arizona 85253 Starlines catalog goes buck also lists thermal sensing equipment booms motor tubes propeller hubs three four function timers tools other staff Sal searches far wide fill FF needs Kudos him latest gems Champion Model Products owner Georqe Schroedter well known excellent kitting supply items marketing two new P-30 rubber parts overlooked First blue 95-in plastic props thin flexible ones weigh 65 grams flying trim used maestro Bob White second pairs nicely machined brass bushings inside diameter 3/M offer reduced friction better prop function Bushings $150 per pair blue screws 75 cents maybe-cheating side sand off mold release marks allowed polish unit Crest Aim toothpaste dazzling whatever maybe illegal rate order up CMP 880 Carmen Court LaVerne California 91750 tell good guy George MA sent July 1991 173 colortul tee Uee Z first barrelshaped racers constructed Granville Brothers Springfield Massachusetts During 1931 won five races including prestigious Thompson Trophy Cleveland Ohio National Air Races Z also direct forerunner famous Gee Bee R1 R-2 PEATURES TWO TYPES OF COWLINGS TYPES OF WHEELS HARD AND FLEXIBLE TIRES ILED INTERIOR ILLA~Send $3 complete illustrated catalogDEPT MA 181 PAWNEE ST SAN MARCOS CALIFORNIA 92069 ConvasiorKopski Ccr dhw7pae 173 side being sure keep straight Use scrap balsa shims needed fit between rails sides Install bottom battery support rails complete battery compartment structure rails easy way create flat surface battery curvy fuselage bottom also provide space cooling air outflow certain designs unusually deep bellies support rails increase battery weight side profile reduce pendulum effect would otherwise present Finally add great deal strength relatively little weight rails made lightweight %-inbalsa sheet capped %-in-sq spruce toughen battery rest surface spaced lie under middle row cells thus impede airflow around cells ends supports glued two added formers course bottom /l6 fuselage planking also glued rails chose make rails average depth about 1% in order bring top battery pack level about 1/2 below side window line location permits incoming air flowing over front battery compartment former pass over pack down through cells three rails 25 uses two seven-packs reasoning justin-case variety What wanted install three six-packs 18 cells 40 someday plane turn out tail-heavy Id need restack 25s 14 cells achieve forward battery weight Using three rails/rows cells gives versatility Still two rows need 25 As photos show leave battery packs exposed rather covering plastic wrap way airflow can contact much cell surface possible packs completely covered can uncover em least space far enough apart ample airflow contacts outer plastic wrap Since Ive mentioned battery cooling PODUCT . Announcing AIL1JEW no-step infinite advance electronic ignition full-function high energy capacitive discharge system uses no mechanical linkage! Prices less battery spark plug Single cylinder$10000 Twin cylinder$12500 Instablock$1500 Stitt 1/4 x32 sparkplug$1000 Installation good engine .$3000 Shipping handling$350 COD$330 number times let back up explain about general motor batteries get anywhere warm hot during use harder theyre used higher average current hotter get Since its potentially damaging make already hot pack hotter through charging its often necessary cool pack following flight before recharging Cooling can done removing pack exposing cooler environment cool grass air etc forcing air plane small blower pack doesnt get hot first place however neednt cooled Thats expose batteries maximum airflow Provided plane flown over range throttle average current less maximum flight spans reasonable duration say seven minutes generous amounts cool outside air allowed freely flow around through cells flier will able charge safely immediately upon landing Such operating conditions readily attained kind models under discussion well Gliders some sport designs As rule aerobatic ships Pylon Racers other hot designs maximum power conditions prevail fly too brieflyabout three four minutes averagefor in-flight cooling eatures include Simple installation No adiustment Small size Light weight Low battery drain Immersion proof packaging Epoxy potted coil very tough No engine modification No parts wear Quadras 35-42-52 Zenoahs 23-38-62 Instablock pre-timed pre-mounted sensor block Simply remove magneto screw Instablock plug module coil ground strap battery Flip prop Fer Info send S1O0 address 174 Model Aviation VINYLWRITE CUSTOM LElTERING Providing elegant time saving economical finishing touch modelers EZ TO APPLY Our lettering comes prpaced prealignedsaving hours cutting fuss aligning individual letters decals text custom computer cut 3M cast vinyl l thin 17 colors pe styles including Military BFock high NOW Al LE Stencil Maslc&1 Color Outlining Priced right no minimum charge ~OThC7tNGPremium Eg AMA plus number high S POELOFFTHECAARIER TAPEJhigh 2high plus $ISOP& H Call write complete info Mlorders processed sponrectAMA0YOURE DONSIpack & sample ITS FREE VINYWEm CUSTON LETrERING 16043 Tulsa StreetTCustom Letter Today Granada Hills CA 91344The VINYLWRITE Way 818363-7131 Noonto6PM PadlIce Mail order CA res add taL QUARTER SCALE Almost Ready Fly EXTRA 300 QS Wing Span 80 Wing Area 1060 sq Weight 14 lbs EXTRA 300 QS beautiful flying 114 scale model aircraft won 1990 US Aerobatic Championships Using factory drawings have put together very exciting balsa scale airplane has sparkling performance full size machine making real contender top honors IMAA IMAC competition kit contaians accurate framed balsa fuselage balsa sheeted plug-in wings tail feathers scale landing gear epoxy fairings wheel pants canopy frame cowl also molded epoxy glass kit also contains wood ply parts required complete model plus illustrated assembly manual Summer Sale Special For details call write ZIMPRO MARKETINO PO BOX 5776 OAK RIDGE TN 37830 PHONE 615-4826188 C GOODIES Cochran St Suite 281805 581-5061 SImI Valley Ca 93065 BuILDING ACCESSORIES #2 SPAN NOW IN 36 & 72 LENGTHS iLVti1 APPLY APPLY FRAME TO DRY 5 CI jER ANEWEDGE ON YOUR NO 11 DUAL BLADE EXACTO OR SHARPENER UBER BLADES ECONDS SAVES TIME AND BLADE REPLACEMENTS OND EDJER REG $1500 SPEC $1275 ARKANSAS STONE REG $1100 SPEC $925 MIC EDJER REG $ 850 SPEC $725 $175 SHIPPING & HANDLING SEE BROCHURE FOR OTHER MODELS PRICES ARE CASH CARDS 6% MORE 20% DEPOSIT-COD effective radio compartment aft %-in balsa former such large Electric theres plenty room radio youre limited microsized Normal-sized servos can arranged tray A-in birch ply shown case tray glued two /e-in-sq balsa rails latter glued fuselage side verticals well %-in former front doubled fuselage verticals trailing edge location 250-mAh receiver pack doublesticky Velcroed Radio Shack part number 64-2345 A-in former fuselage FTER YOU DID ALL THE WORK THE MAGIC MAGNET BUILDER finest model building equipment manufactured 4tok4 a/I c/Ie,zIAwh1e%&o%~o/ekuue/d/a4war /aea age 4/ haw/to 4heoe hony Ma mane/ woe /yyaeaI Jhe0 /aa4h/ dealer order direct . 500A Magic Magnet Builder contains 16x48 Steel Base Plate 30 Magnets 10 stands $ 9450 5008 Master Magic Magnet Builder contains 16 x 48 Steel base plate 60 Magnets 10 stands 10 Vert press 10 steps 10 rib holders 40 sets nuts & bolts$16895 503B Base Plate Extension 16x 16 Steel Base plate building giants$2695 SOlA Unassembled Magnets 10 pak$ 1195 SOiB Assembled Magnets 10 pak$2200 502 Stands 10 uprights primarily doe fuselage assy$ 950 504 Vertical press 5 pak holding spars leading trailing edges position$ 995 505 Steps 5 pack adjustable leading & trailing edge positioning$ 995 506 Rib Holder 10 pak Use magnet building faster$ 995 507 R&R Tool Magnet Mover$ 1 75 TELDON J LIND COMPANY 3151 caravelle Dr Lake Havasu city AZ 86403 S 16021453-7970 Send self addressed stamped envelope catalog products M/C & Visa accepted floor level receiver attached same former above pack Before attaching Velcro formers coat wood surfaces Ambroid similar glue allow dry sand lightly will make Velcro adhere much better chose install hatch fuselage bottom shown topside hatch may suitable foryour model Whatever location hatch allows access motor wiring charge jack switch speed control latter also doublesticky Velcroed place case front sandwich former youre building Seniorita may wondering about photo showing top forward cabin structure Yes its modified Instead putting shapely balsa blocks wing front center added balsa stock above below fuselage piece FF shaped shown also substituted 1/e-in hold-down dowels supplied kit Since WHY LET OUR AIRPLANE DO ALL THE FLYING NFO $500 BUILD & FLY THE miniMAX YOURSELF AWARDED Grand Champion Reserve Grand Champion U Itralight 1989 Sun-N-FUn Fly-In *Computer Designed3 Axis Control Part 103 UltralightEasy Construction * Wood Construction electrified plane heavier originally intended recommend follow suit Please make sure glue joints area good fitting well madeyour wing attached Incidentally found No 117 Continued page 182 Sport Scale EXTRA 300 Span 68 700 sq lbs Now very attractive EXTRA 300 joins DALOTEL 650 CAP 21 ZMPs group 61 -91 powered Sport Scale Aero batic Aircraft Like other 20 AlmostReady-to-Fly models Zimbabwe Model Products range Balsa Kit fea tures accurately framed fuslage plug-in sheeted wings tail feathers scale appearance landing gear epoxy cowl clear canopy Summer Sale Special 00 details call write ZIMPRO MARKETING PO BOX 5776 OAK RIDGE TN 37830 PHONE 615-482-6188 TEAM INC BOX 338M BRADYVILLE TN 37026 6151 765-5397July 1991175 GUN 20 X3 $325 HEN CF NG * MODE PANE * IONYASEAA AWE MEN RE RE OW REGU AR N S OCIL P ANS GE OUR AMOGE WOE RIMOS AU HEN CMOU P NsDAY SERICE OtR~R1/2 EF3/4 UP 19 YRIARRREVIAT NAME 124S2 lI16S2 LIE SI 37 DeEM' COSRE ROE 4U Voo8ht COO F4U 15 IRE JEI4S JEflEy 27 L1EdbRUER NX211 29 EMOG TOpRESELEE 36 6ERRLIRd LYRORdEE 35 DEoo 0-46A UbRE 29 BORiGE 500 Sport 33 SOLo ToLmLOr Ll6LEP38 25 tIgi CORE U2U1/4 38 Coo CROLRO PEYSe 19 CarOL. 814 17 PEIEIERE 07 PLE 31 EMYLR GERSER 13 SapeomliEse 16R 36 GEREE GELUROR9E 38 Look E1RcLOA #11 43 GEwE AERORRE TBF 42 Roe 8170 PLyPEEO 38 18A NLOOhR1l R25 34 EEROCiCOOESNC72 37 CR0 ROBs 503C1 25 CROOE 1311 42 34 DOER TECOOP DC-3 33 CwEO New6 P6E 32 DoE11LOlR GUll 31 50 P48364 P128 32 SpEUld 811DEE 22 l8Ewsrd IkRM81l 34 TUEEERRE 818 EACRE 35 No E6E111gOo 33 BOR P26A Low Wg 35 S11EEEEE TW SR7 42 DIE NOSqOLOR 506 37 SORERO PT17 43 N Rib Widow P61 38 TANS 166 Teo13 42 CN11d1vo SB2C4 26 EErIE 1011010 4AT 31 811000 ALE ERR 33 GEE. J2F DoCk 27 CSRO60k F7C1 28 216 Aaphib 238 16 ll1gR 8400 806 31 LIodys LU1ELRR 31 HowEErd ROOPRIR 31 C Sporhok P91-2 33 AEERO C3 SIO 38 TREGRER FORCE Sp 03 EJoLeElL FILER ISE GE I1/ 5z 114Sl 2232032433266344 132350 2U52U3022660$45ME" 21 31832 52465538864552~ 15514 344324 69334 9154E 15514 224320 45334 6U54En0362 255183743247553tt04452.4 235243453268546~ 15316 224324 45336I60.3EJ8l 90562 305304553U9056212037. 27319 39 226 70545 L2 1843152832056E334I12556 18 322 27 328 54y44r7SE$55 08S 52 34878 560104 4694589 14 51221 516. 530o4349 114512174514355324 544 70356 15510224313444$2660388952 P4514 214358 43538 SCALE PLAN 275254133255538Look E1eo34 30328405308032FOrd3M4AT6 5154077 3580 8170 56 36433755 552A 825 56 15451523322644535114 8-26 6 1951E 204524 57336 SIlo ToL 4 11 5151645203 0 odlyPe e 6 47540 71 150oo6 123I718432237 3549467458 1i516224320444532594448958 134516205204033253580558 1045121545153132662345 5351219516393285 34078552 165152343204733264448456 14 513 21 520 42 532 63 45 84 58 2045163143256254582552366 3742441135815060865 33 540 4950 99 75 144$13214 518433686O 25525374535 38 53857 248 32 52248 5309652 1945282954058555I8168 154318 2245241 36534 S4342-l~~2 21516 314322 ~36 2153153033005 2 12451519522 1851O27514534326107 48 123161832O3733649$48j7445 601120tt 8060 8EFORE ORDERING* 315 SCALE IlIAG Start M151184E188 URGER 515 ooPLANS AVAILABLE AT ONE RE SU8E TO ADD TOE USU-PRICES FOFI ALL DESIGNS AL LEZ FUR PACKAGING PORTAGE AND INSURANCE ABOUT TROUSASED ADDITIONAL PLANS RHANY SIZES 75 CATALOG 5200 OR PRICE LIST ALONE 51.R BY______________________________________ AIR FOREIGN 33____ eve an0 e uppy o 180001 Pr68AEIRIIEEE ROE FIndRIte 8919R"""" 91880LI0 810 lB ADAPTOR ThROW-A-WAY YOUR COLLETS CHUCK & WRENCH USE OUR ADAPTOR & 532 CAPONALL DREMEL POWER TOOLS RUNS 100% TRUE & CONCENTRIC AT FULL RPM ESS CHUCK $1895 DREMEL 850 395 DO NOT NEED ADAPTOR TO USE KEYLESS CHUCK STEEL SAW AND ARBOR HARDENED GROUND & POUSHED STEEL USED FOR CUTTiNG PLASTIC WOOD SOfl METALS LEXAN PLEXIGLASS & ETC AVAILABLE IN 006 008 010 012 014 U016018 020023025 028 032THICKNESS 1 OUISIDE DIAMETER @ $075 Ek NO 502ARBOR $600 NO 503 1X014X1/4SAW$600 OUR SAWS ONLY WORK WITH OUR ARBOR MICRO SELFSTARTING TORCH No Rod flinl 01 matIlel dull O 05 lIre Piezo SeIl-SlarIing bullon 0 A micro size adjollable flame 6 IS Al 2370 up II 3 hOurs Ope Ales IlandAld ci9Arelle gh bulane old relillable Tank 5 omforlably 144 palm yosr ha d made htgl-tmpact bIer allows safe non2 s p comlorlable grip Sapplted mill - a blab MT770 Blow Torch$3588 cAn 01 Dutanel MT771 SobER 4 ozS800 EASTERN TOOL& SUPPLY CO I49GRANDST-NYCNY 10013 WRITE FOR CATALOG $300 ORDERS 212 925-1008 WHEN ORDERING PPD ADD $300 OFFICE 212-228-3749 COD ADO $500 FAX212-925-1510 RADIO SOUTH N Palafox Pensacola FL 32503 Fil j 4 PRO est Hinge Install IPlastlcI inning messy epORyInstBnt glues neededIspecial Paper pecial hinge slogGer neededNo alignment neceBsely RC $24SIpkg 19 cale $44SIpkg 24 use cyanoacryIate adhesives available local hobby shop call 904-434-0909 Conversion/Kopski Continued page 175 rubberbands much nicer job strapping wing tied-together No 64stheyre long enough easily cross large wing chord longer bands however wide 64s youll need use use seven eight side Continued next month Card nal/Haught Continued page 50 Dont forget bush length brass tube did flap joiner Install hinges join elevator stabilizer Wrap tube bushing layer glass cloth reinforcement Give assembly final sanding Fuselage phase goes quickly Cut core profile medium-lightweight sheet A-in balsa Cut out engine mount fuel tank stabilizer wing locations Make two plywood nose doublers fit fuselage core hardwood engine mounts Once have good fit glue works together wood glue clamp overnight assembly drying bend landing gear tail skid Wrap tall skid wire length hardwood dowel drill hole rear fuselage accommodate skid its dowel Make hole slighfly larger diameter dowel Attach skid-and-dowel epoxy wood glue fuselage dry trim plywood necessary order set new dimension RIC world Fly Wire Technology hereTo tulfill wildest RIC dreams engine place Drill mounting holes install blind mounting nuts rear same time drill holes landing gear mounting straps install straps gear Secure nuts drop solder youve ever caught face red because nuts backed out youll know suggest Make thick fuselage doublers lightweight 3/o-in sheet Cut shape glue place Carve pleasing contour dry Taper can kept minimum doublers approach trailing edge wing since stringers take over job point Select several fairly firm strips n balsa stringers Begin top stringer forms top stabilizers home slot make sure its properly aligned Fit short length stringer under stabilizer slot anchor covering fit small piece leading edge stabilizer Install remaining stingers Make block support pushrod guide install between second third stringers Allow stringers dry trim taper back rudder post shown plan top view other end fuselage carve fuel tank well install fuel tank Because thickness doublers filler vent tubes tank may need either relocated extended clear fuselage youre using dummy five-cylinder engine build now used Williams Bros kit cylinders mounting plywood cylinder mount shown plan mount screwed engine mounts nose long wood screws entire engine can removed desired Mount small light weight VidEo/Sound Transmitter Systems model ujrcrutt helicopter Actually OUO what modUl sees televiSion RUcord oo VOR Hear engineo wind up sir howl hy See Streets rooftops helow us guide model through its paces Experience ultimate hreuth tuking reulism See new dimension RIO world Experience Fly hy Wire Technolugy Kits Otirt $77505 Complote units start $124503 Send fur free See us St R/O Shows md hohhy shops Truely new dimension ton RIO World IOPERFUN 158P59AT158 182 Model Aviation

STAYING UP Quinn Now its spring Free Flighters fancy turns thoughts knee high grass blue skies anticipation summer contest trail opportunity bring out new-machines confined basement garage Southern California blessed legendary tall green stuff thousand acres border area field thanks recent monsoons winter building frenzy yielded two Coupes big Mulvihill P-30 BoomBox No 5 Im anxious anyone get out serious testing Lost Hill FAI Team Selection Finals observed Jim Quinns airfoil used very successful Fantasy Wakefield design gained lot followers fact present two team qualifiers craft Roger Maves George Xenakis first alternate Bob Milligans too much difficulty posting fourS Quinns derivation Gard 7510 shown tracing directly Cygnet Soft ware computer printout Note thickness distribution turbulator placements Top left Wakefield Coupe Reverse Montreal hubs manufac tured designer John Morrill Very easy installation low maintenance Close up bottom left Morrill Wakefield Hub seen US Wakefield Team member Norm Furutanis latest craft will flown FF World Champs Yugoslavia 1991 Above isometric Morrill hub 56 Model Aviation Duration John Oldenkamp 3331 Adams Avenue San Diego CA 92116 During Easter Sunday test session author holds up latest Coupe dHiver P30 ships Quinn-87 airfoil clearly evident both planes Carin Howard Photo GARD 7510 Morrill FiB Hub minute flights under very marginal lift conditions Altitudes under power impressive glide superb Mentally storing holed up workshop made five planes chords ranging 36 58 just see could better beloved USA 5 cum Simplex reverse 7% bottom foils Eureka case no exaggeration now have direct powerful climbs much improved glides course confidence starting line could wind max torque find silly thermals Quinn-87 illustrated modification very popular Gard 7510 forward upper camber much reduced lower 70% thickened somewhat provide structural integrity leading edge sharp dares trailing edge relatively blunt thick accommodate either rectangular monocoque format Some caveats airfoil must flown about 65% balance point should turbulated shown must accompanied stabilizer rounded Phillips entry leading edge lest lots stally whoop-de-dos occur turbulence will Recent cottage industry samplings As alluded BoomBox piece Model Aviation July 1990 flock new products have come downstream First among quite apropos Quinn-87 discussion above updated version Foiled Again computer software program designed Free Flighters Pauline Bernard Crowe doing business Cygnet Software 24843 Del Prado Suite 141 Dana Point California 92629 illustrations printed traced program contains several hundred public domain airfoils Quinn-87 Gard 7510 among can used IBM compatibles plus dot-matrix outputs plot straight diagonal thicken glim modify extraordinary menu outlines Mail order price $4495 plus California sales tax residents Continued page 173 July 1991 57 tarIine Internationals VEI ngtne Hun liner Mirror image photo left shows quality interior parts other key features Thumb fingers give good idea size Milled aluminum stabilizer mounts Starline Perforations allow adhesive build-up safe operation unit may recessed tailpiane mounted flush bottom Useful thrust bearing sets P-30 props Champion Model Products oseoioc snows typical use ingenious right/left winder Old Time Twin Pushers developed San Diego Orbiteer Fudo Takagi Unit adapts standard -in hand drill chuck made last IRIL Quality kit SALE $9995 LIST $ 139~ SALE LIST $1 19~ SALE $7995 LIST 114~ SALE $7995 LIST 114~ Ask Co sea IC aC local dealer available order direct GARDEN 1731 NW Madrid Way Boca Raton FL 33432 Call Anytime 407-367-7744 Free Catalog MasterCard VISA Accepted good place digress bit suggest before getting too far electrification process take hard look fuselage design model have chosen moments some other details Seniorita just right such conversion Some models however have relatively short nose moments could make very hard get final balance right such cases might consider forward location added front former wilt allow shift battery pack farther forward necessary attain desired CG location Another problem some designs fuselage sides cabin area parallel Indeed some fuselages rather shapely bowed sides cabin area Nevertheless suggest use side rails immobilize battery side-toContinued oil page 174 FF Duration/Oldenkamp Continued page 56 John Morrill has already given us durable efficient Sidewinder rubber winder Simple Stooge universal necessities Gumbanders now offers two elegantly engineered reverse Montreal stop front hubs Wakefield Coupe dHiver fail-safe utterly simple lightweight 21 7 THE SUPERIOR GLOW PLUGS GO FASTFLYERSAREBACKII Puts sting eng ne Unique flat-wound spiral coil element high temperature glass-to-metal seal add up faster ignition increased RPM 1/2A GloBee plugs designed exclusively 0491051 Cox engines Ask new GB-5RX Speed Plug GB-5R Racing Plug GB-5P Sport Plug local dealer today unavailable locally write call Twinn-K collect pricing delivery information FREE GloBee Catalog MAKE THE GLOBEE INDY CONNECTION Twinn-K Inc 10296 W Washington St Indianapolis IN 46231 Telephone 317-839-6579 FAX 317-839-8928 grams respectively Fussy types can lighten bit Dremel tool use Mulvihill projects desired Carefully crafted field strippable under minute huge bargain investment assuring proper fold time $2450 Wake $1950 Coupe direct John Morrill Miniature Engines 143 Richmond Street El Segundo California 90245 Gas enthusiasts will praise Sal Frucianos latest import super high quality enginerun timer PMT features mousetrap-like action closes down fuel line should positively end full tank disasters unit lovingly machined stamped edges rolled much thick brass evidence on-off switch works good feel plus machined fitting supports both ends fuel line Weight 14 grams settings 0 30 seconds Adding Sals line pair superlight stabilizer platforms fit both square circular tail booms FAI Gas Rubber Nordic hinged pull-apart units hardened steel bearing-wire axle long life smooth pop-up Easy installation cyanoacrylate epoxy weigh two grams Very slick Sals company Starline International 6146 East Cactus Wren Road Scottsdale Arizona 85253 Starlines catalog goes buck also lists thermal sensing equipment booms motor tubes propeller hubs three four function timers tools other staff Sal searches far wide fill FF needs Kudos him latest gems Champion Model Products owner Georqe Schroedter well known excellent kitting supply items marketing two new P-30 rubber parts overlooked First blue 95-in plastic props thin flexible ones weigh 65 grams flying trim used maestro Bob White second pairs nicely machined brass bushings inside diameter 3/M offer reduced friction better prop function Bushings $150 per pair blue screws 75 cents maybe-cheating side sand off mold release marks allowed polish unit Crest Aim toothpaste dazzling whatever maybe illegal rate order up CMP 880 Carmen Court LaVerne California 91750 tell good guy George MA sent July 1991 173 colortul tee Uee Z first barrelshaped racers constructed Granville Brothers Springfield Massachusetts During 1931 won five races including prestigious Thompson Trophy Cleveland Ohio National Air Races Z also direct forerunner famous Gee Bee R1 R-2 PEATURES TWO TYPES OF COWLINGS TYPES OF WHEELS HARD AND FLEXIBLE TIRES ILED INTERIOR ILLA~Send $3 complete illustrated catalogDEPT MA 181 PAWNEE ST SAN MARCOS CALIFORNIA 92069 ConvasiorKopski Ccr dhw7pae 173 side being sure keep straight Use scrap balsa shims needed fit between rails sides Install bottom battery support rails complete battery compartment structure rails easy way create flat surface battery curvy fuselage bottom also provide space cooling air outflow certain designs unusually deep bellies support rails increase battery weight side profile reduce pendulum effect would otherwise present Finally add great deal strength relatively little weight rails made lightweight %-inbalsa sheet capped %-in-sq spruce toughen battery rest surface spaced lie under middle row cells thus impede airflow around cells ends supports glued two added formers course bottom /l6 fuselage planking also glued rails chose make rails average depth about 1% in order bring top battery pack level about 1/2 below side window line location permits incoming air flowing over front battery compartment former pass over pack down through cells three rails 25 uses two seven-packs reasoning justin-case variety What wanted install three six-packs 18 cells 40 someday plane turn out tail-heavy Id need restack 25s 14 cells achieve forward battery weight Using three rails/rows cells gives versatility Still two rows need 25 As photos show leave battery packs exposed rather covering plastic wrap way airflow can contact much cell surface possible packs completely covered can uncover em least space far enough apart ample airflow contacts outer plastic wrap Since Ive mentioned battery cooling PODUCT . Announcing AIL1JEW no-step infinite advance electronic ignition full-function high energy capacitive discharge system uses no mechanical linkage! Prices less battery spark plug Single cylinder$10000 Twin cylinder$12500 Instablock$1500 Stitt 1/4 x32 sparkplug$1000 Installation good engine .$3000 Shipping handling$350 COD$330 number times let back up explain about general motor batteries get anywhere warm hot during use harder theyre used higher average current hotter get Since its potentially damaging make already hot pack hotter through charging its often necessary cool pack following flight before recharging Cooling can done removing pack exposing cooler environment cool grass air etc forcing air plane small blower pack doesnt get hot first place however neednt cooled Thats expose batteries maximum airflow Provided plane flown over range throttle average current less maximum flight spans reasonable duration say seven minutes generous amounts cool outside air allowed freely flow around through cells flier will able charge safely immediately upon landing Such operating conditions readily attained kind models under discussion well Gliders some sport designs As rule aerobatic ships Pylon Racers other hot designs maximum power conditions prevail fly too brieflyabout three four minutes averagefor in-flight cooling eatures include Simple installation No adiustment Small size Light weight Low battery drain Immersion proof packaging Epoxy potted coil very tough No engine modification No parts wear Quadras 35-42-52 Zenoahs 23-38-62 Instablock pre-timed pre-mounted sensor block Simply remove magneto screw Instablock plug module coil ground strap battery Flip prop Fer Info send S1O0 address 174 Model Aviation VINYLWRITE CUSTOM LElTERING Providing elegant time saving economical finishing touch modelers EZ TO APPLY Our lettering comes prpaced prealignedsaving hours cutting fuss aligning individual letters decals text custom computer cut 3M cast vinyl l thin 17 colors pe styles including Military BFock high NOW Al LE Stencil Maslc&1 Color Outlining Priced right no minimum charge ~OThC7tNGPremium Eg AMA plus number high S POELOFFTHECAARIER TAPEJhigh 2high plus $ISOP& H Call write complete info Mlorders processed sponrectAMA0YOURE DONSIpack & sample ITS FREE VINYWEm CUSTON LETrERING 16043 Tulsa StreetTCustom Letter Today Granada Hills CA 91344The VINYLWRITE Way 818363-7131 Noonto6PM PadlIce Mail order CA res add taL QUARTER SCALE Almost Ready Fly EXTRA 300 QS Wing Span 80 Wing Area 1060 sq Weight 14 lbs EXTRA 300 QS beautiful flying 114 scale model aircraft won 1990 US Aerobatic Championships Using factory drawings have put together very exciting balsa scale airplane has sparkling performance full size machine making real contender top honors IMAA IMAC competition kit contaians accurate framed balsa fuselage balsa sheeted plug-in wings tail feathers scale landing gear epoxy fairings wheel pants canopy frame cowl also molded epoxy glass kit also contains wood ply parts required complete model plus illustrated assembly manual Summer Sale Special For details call write ZIMPRO MARKETINO PO BOX 5776 OAK RIDGE TN 37830 PHONE 615-4826188 C GOODIES Cochran St Suite 281805 581-5061 SImI Valley Ca 93065 BuILDING ACCESSORIES #2 SPAN NOW IN 36 & 72 LENGTHS iLVti1 APPLY APPLY FRAME TO DRY 5 CI jER ANEWEDGE ON YOUR NO 11 DUAL BLADE EXACTO OR SHARPENER UBER BLADES ECONDS SAVES TIME AND BLADE REPLACEMENTS OND EDJER REG $1500 SPEC $1275 ARKANSAS STONE REG $1100 SPEC $925 MIC EDJER REG $ 850 SPEC $725 $175 SHIPPING & HANDLING SEE BROCHURE FOR OTHER MODELS PRICES ARE CASH CARDS 6% MORE 20% DEPOSIT-COD effective radio compartment aft %-in balsa former such large Electric theres plenty room radio youre limited microsized Normal-sized servos can arranged tray A-in birch ply shown case tray glued two /e-in-sq balsa rails latter glued fuselage side verticals well %-in former front doubled fuselage verticals trailing edge location 250-mAh receiver pack doublesticky Velcroed Radio Shack part number 64-2345 A-in former fuselage FTER YOU DID ALL THE WORK THE MAGIC MAGNET BUILDER finest model building equipment manufactured 4tok4 a/I c/Ie,zIAwh1e%&o%~o/ekuue/d/a4war /aea age 4/ haw/to 4heoe hony Ma mane/ woe /yyaeaI Jhe0 /aa4h/ dealer order direct . 500A Magic Magnet Builder contains 16x48 Steel Base Plate 30 Magnets 10 stands $ 9450 5008 Master Magic Magnet Builder contains 16 x 48 Steel base plate 60 Magnets 10 stands 10 Vert press 10 steps 10 rib holders 40 sets nuts & bolts$16895 503B Base Plate Extension 16x 16 Steel Base plate building giants$2695 SOlA Unassembled Magnets 10 pak$ 1195 SOiB Assembled Magnets 10 pak$2200 502 Stands 10 uprights primarily doe fuselage assy$ 950 504 Vertical press 5 pak holding spars leading trailing edges position$ 995 505 Steps 5 pack adjustable leading & trailing edge positioning$ 995 506 Rib Holder 10 pak Use magnet building faster$ 995 507 R&R Tool Magnet Mover$ 1 75 TELDON J LIND COMPANY 3151 caravelle Dr Lake Havasu city AZ 86403 S 16021453-7970 Send self addressed stamped envelope catalog products M/C & Visa accepted floor level receiver attached same former above pack Before attaching Velcro formers coat wood surfaces Ambroid similar glue allow dry sand lightly will make Velcro adhere much better chose install hatch fuselage bottom shown topside hatch may suitable foryour model Whatever location hatch allows access motor wiring charge jack switch speed control latter also doublesticky Velcroed place case front sandwich former youre building Seniorita may wondering about photo showing top forward cabin structure Yes its modified Instead putting shapely balsa blocks wing front center added balsa stock above below fuselage piece FF shaped shown also substituted 1/e-in hold-down dowels supplied kit Since WHY LET OUR AIRPLANE DO ALL THE FLYING NFO $500 BUILD & FLY THE miniMAX YOURSELF AWARDED Grand Champion Reserve Grand Champion U Itralight 1989 Sun-N-FUn Fly-In *Computer Designed3 Axis Control Part 103 UltralightEasy Construction * Wood Construction electrified plane heavier originally intended recommend follow suit Please make sure glue joints area good fitting well madeyour wing attached Incidentally found No 117 Continued page 182 Sport Scale EXTRA 300 Span 68 700 sq lbs Now very attractive EXTRA 300 joins DALOTEL 650 CAP 21 ZMPs group 61 -91 powered Sport Scale Aero batic Aircraft Like other 20 AlmostReady-to-Fly models Zimbabwe Model Products range Balsa Kit fea tures accurately framed fuslage plug-in sheeted wings tail feathers scale appearance landing gear epoxy cowl clear canopy Summer Sale Special 00 details call write ZIMPRO MARKETING PO BOX 5776 OAK RIDGE TN 37830 PHONE 615-482-6188 TEAM INC BOX 338M BRADYVILLE TN 37026 6151 765-5397July 1991175 GUN 20 X3 $325 HEN CF NG * MODE PANE * IONYASEAA AWE MEN RE RE OW REGU AR N S OCIL P ANS GE OUR AMOGE WOE RIMOS AU HEN CMOU P NsDAY SERICE OtR~R1/2 EF3/4 UP 19 YRIARRREVIAT NAME 124S2 lI16S2 LIE SI 37 DeEM' COSRE ROE 4U Voo8ht COO F4U 15 IRE JEI4S JEflEy 27 L1EdbRUER NX211 29 EMOG TOpRESELEE 36 6ERRLIRd LYRORdEE 35 DEoo 0-46A UbRE 29 BORiGE 500 Sport 33 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J2F DoCk 27 CSRO60k F7C1 28 216 Aaphib 238 16 ll1gR 8400 806 31 LIodys LU1ELRR 31 HowEErd ROOPRIR 31 C Sporhok P91-2 33 AEERO C3 SIO 38 TREGRER FORCE Sp 03 EJoLeElL FILER ISE GE I1/ 5z 114Sl 2232032433266344 132350 2U52U3022660$45ME" 21 31832 52465538864552~ 15514 344324 69334 9154E 15514 224320 45334 6U54En0362 255183743247553tt04452.4 235243453268546~ 15316 224324 45336I60.3EJ8l 90562 305304553U9056212037. 27319 39 226 70545 L2 1843152832056E334I12556 18 322 27 328 54y44r7SE$55 08S 52 34878 560104 4694589 14 51221 516. 530o4349 114512174514355324 544 70356 15510224313444$2660388952 P4514 214358 43538 SCALE PLAN 275254133255538Look E1eo34 30328405308032FOrd3M4AT6 5154077 3580 8170 56 36433755 552A 825 56 15451523322644535114 8-26 6 1951E 204524 57336 SIlo ToL 4 11 5151645203 0 odlyPe e 6 47540 71 150oo6 123I718432237 3549467458 1i516224320444532594448958 134516205204033253580558 1045121545153132662345 5351219516393285 34078552 165152343204733264448456 14 513 21 520 42 532 63 45 84 58 2045163143256254582552366 3742441135815060865 33 540 4950 99 75 144$13214 518433686O 25525374535 38 53857 248 32 52248 5309652 1945282954058555I8168 154318 2245241 36534 S4342-l~~2 21516 314322 ~36 2153153033005 2 12451519522 1851O27514534326107 48 123161832O3733649$48j7445 601120tt 8060 8EFORE ORDERING* 315 SCALE IlIAG Start M151184E188 URGER 515 ooPLANS AVAILABLE AT ONE RE SU8E TO ADD TOE USU-PRICES FOFI ALL DESIGNS AL LEZ FUR PACKAGING PORTAGE AND INSURANCE ABOUT TROUSASED ADDITIONAL PLANS RHANY SIZES 75 CATALOG 5200 OR PRICE LIST ALONE 51.R BY______________________________________ AIR FOREIGN 33____ eve an0 e uppy o 180001 Pr68AEIRIIEEE ROE FIndRIte 8919R"""" 91880LI0 810 lB ADAPTOR ThROW-A-WAY YOUR COLLETS CHUCK & WRENCH USE OUR ADAPTOR & 532 CAPONALL DREMEL POWER TOOLS RUNS 100% TRUE & CONCENTRIC AT FULL RPM ESS CHUCK $1895 DREMEL 850 395 DO NOT NEED ADAPTOR TO USE KEYLESS CHUCK STEEL SAW AND ARBOR HARDENED GROUND & POUSHED STEEL USED FOR CUTTiNG PLASTIC WOOD SOfl METALS LEXAN PLEXIGLASS & ETC AVAILABLE IN 006 008 010 012 014 U016018 020023025 028 032THICKNESS 1 OUISIDE DIAMETER @ $075 Ek NO 502ARBOR $600 NO 503 1X014X1/4SAW$600 OUR SAWS ONLY WORK WITH OUR ARBOR MICRO SELFSTARTING TORCH No Rod flinl 01 matIlel dull O 05 lIre Piezo SeIl-SlarIing bullon 0 A micro size adjollable flame 6 IS Al 2370 up II 3 hOurs Ope Ales IlandAld ci9Arelle gh bulane old relillable Tank 5 omforlably 144 palm yosr ha d made htgl-tmpact bIer allows safe non2 s p comlorlable grip Sapplted mill - a blab MT770 Blow Torch$3588 cAn 01 Dutanel MT771 SobER 4 ozS800 EASTERN TOOL& SUPPLY CO I49GRANDST-NYCNY 10013 WRITE FOR CATALOG $300 ORDERS 212 925-1008 WHEN ORDERING PPD ADD $300 OFFICE 212-228-3749 COD ADO $500 FAX212-925-1510 RADIO SOUTH N Palafox Pensacola FL 32503 Fil j 4 PRO est Hinge Install IPlastlcI inning messy epORyInstBnt glues neededIspecial Paper pecial hinge slogGer neededNo alignment neceBsely RC $24SIpkg 19 cale $44SIpkg 24 use cyanoacryIate adhesives available local hobby shop call 904-434-0909 Conversion/Kopski Continued page 175 rubberbands much nicer job strapping wing tied-together No 64stheyre long enough easily cross large wing chord longer bands however wide 64s youll need use use seven eight side Continued next month Card nal/Haught Continued page 50 Dont forget bush length brass tube did flap joiner Install hinges join elevator stabilizer Wrap tube bushing layer glass cloth reinforcement Give assembly final sanding Fuselage phase goes quickly Cut core profile medium-lightweight sheet A-in balsa Cut out engine mount fuel tank stabilizer wing locations Make two plywood nose doublers fit fuselage core hardwood engine mounts Once have good fit glue works together wood glue clamp overnight assembly drying bend landing gear tail skid Wrap tall skid wire length hardwood dowel drill hole rear fuselage accommodate skid its dowel Make hole slighfly larger diameter dowel Attach skid-and-dowel epoxy wood glue fuselage dry trim plywood necessary order set new dimension RIC world Fly Wire Technology hereTo tulfill wildest RIC dreams engine place Drill mounting holes install blind mounting nuts rear same time drill holes landing gear mounting straps install straps gear Secure nuts drop solder youve ever caught face red because nuts backed out youll know suggest Make thick fuselage doublers lightweight 3/o-in sheet Cut shape glue place Carve pleasing contour dry Taper can kept minimum doublers approach trailing edge wing since stringers take over job point Select several fairly firm strips n balsa stringers Begin top stringer forms top stabilizers home slot make sure its properly aligned Fit short length stringer under stabilizer slot anchor covering fit small piece leading edge stabilizer Install remaining stingers Make block support pushrod guide install between second third stringers Allow stringers dry trim taper back rudder post shown plan top view other end fuselage carve fuel tank well install fuel tank Because thickness doublers filler vent tubes tank may need either relocated extended clear fuselage youre using dummy five-cylinder engine build now used Williams Bros kit cylinders mounting plywood cylinder mount shown plan mount screwed engine mounts nose long wood screws entire engine can removed desired Mount small light weight VidEo/Sound Transmitter Systems model ujrcrutt helicopter Actually OUO what modUl sees televiSion RUcord oo VOR Hear engineo wind up sir howl hy See Streets rooftops helow us guide model through its paces Experience ultimate hreuth tuking reulism See new dimension RIO world Experience Fly hy Wire Technolugy Kits Otirt $77505 Complote units start $124503 Send fur free See us St R/O Shows md hohhy shops Truely new dimension ton RIO World IOPERFUN 158P59AT158 182 Model Aviation