The 1991 F3B team logo available pins patches T-shirts can ordered address given text US F3B team fundraising now full swing Soaring enthusiasts no doubt know United States has sent team F3B World Championships held other year since 1977 1991 World Champs will August Netherlands nearly 30 countries com peting Making up U S team top three fin ishers team selection finals held Denver last Labor DayLarry Jolly Daryl Perkins Joe Wurts Los Angeles area guys definitely world-class fliers believe have excellent shot winning World Champs team trophy something have never done Itll proud day American Sailplaners can pull off AMA pays entry fees transportation over seas living costs during contest team has substantial additional expense almost 48 Model Aviation Radio Confrol Soaring Byron Blakeslee 3134 N WInn*ago Dr Sdalla CO 80135 superlative quarter-scale DG-300 Jamie Carpenters Concord NH answer re alistic can get Jamie scratch-built everything Graupner spoilers instru ments H Designs pilot 8 1/2-lb Sailplane has molded fuselage foam core wings stab both balsa sheeted time RC Scale World Championships bold ID numbers fuse wing bottom Byrons -scale Roke ASK-la Vinyiwrite purchased good-flying ship Tony Arnoux imparts Miami years worth practice home week Europe just prior champs have traditionally supported team purchasing special logo souvenirs year Byron made vacuum pump wing bag ging old refrigerator compressor pump hss rope handles both ends Jamie Carpenters DG-300 aloft Eppier 27 long Building how-to text 214 airfoil gIves realistic flight speed Left Harley Michaeiiss latest Jouster won prestigious Northwest Soaring SocIetys 1990 Season Point Championship refined se quel Keetah its Harleys beat far terms structure performance handling Right Jouster has all-wood glassed-over fuselage all-foam-core wing unusually rigid fiat center section new type internal aileron driver called DADS tEA IN CONIRON J Losing control can night- modeling radio repair So avoid mare wrong response toa inflated repair costs undue given command can take its service time Radio South toll model fast economical inyour nerves e radio service wallet Radio South wejTI depend Radio know feel aboutElU h customer satisfaction hobby too areI] just motto Its avid RC enthusiasts way life nearly half century Let us put back control combined experienceincQj oil Free Order Line Orders Only Pleaserepair information 1-800-962-7802 5524 N Palafox Pensacola FL 32503 904 434-0909 pins patches T-shirts sale Prices $250 pin $300 patch $500 pinand-patch set $1200 T-shirt Dont get indicate T-shirt size Additional contribu tions team fund course welcome Please send order USA F3B Team Fund PO Box 3242 Lakewood CA 911703242 Team Manager Randy Spencer wrote say team practices going well Speed duration priority far dis tance practice begin soon team looking F3B events attend early part season help stay attuned pres sures actual contest conditions Randy also sent short biographical sketches of team members Im sure readers will interested learning about three magnificent fliers Larry Jolly started flying RC Sailplanes com petitively 1979 has won five Nats Sail plane competitions both Unlimited Stan dard classes Larry won first F3H World cross-country Sailplane championship held South Africa 1985 flying model own design member 1989 US F3B team placed 10th World champs held near Paris Larry known modelers LIMP kit manufacturing company produces line top Sailplane designs also recog nized activities movie world spe cial effects having built flown aircraft such films Die Hard Flight Intruder Miracle Landing Airwoif Larry Heli copter columnist Model Aviation con tributing columnist MAN magazine Daryl Perkins has flying Sailplanes since 1985 immediately drawn Slope Racing aspect sport because need speed quickly became premier fliers Slope Race circuit win ning 1988 1989 Hans Weiss Memorial Slope Race both classes 1989 Nats Slope Races club local races Drawing racing experience Daryl excels F3B speed distance tasks Joe Wurts design engineer working air craft conceptual design Lockheed Advanced Development company professional career training BS MS Aero EngineerBALSA WOOD 1/8iNcH3648 1/8 1/80912 BALSA WOOD1/6 3/161216 STICKS1/8 1/41418 1/8 3/817 22 1/16INcH3848 1/8 1/21826 1/16 1/16061/8 3/42635 1/163/3207 1/16 1/609 1/1603/1610 1/16 1/411 1/163/814 1/16 7 1/16 3/422 3/16iNcH3648 12 143/163/161416 16 3/16 1/41520 183/163/61722 213/16 127 303/16 3/43041 3/33INcH3648 I/4INcH3648 3/32 3/3208121/4 1/41722 3/32 1/810141/43/81927 3/323/1611161/4 1/22231 3/32 1/414171/4 445 3/323/61020 3/32 1/21722________ 3/32 533 Doobi BIa Wood Prce Sproce 004 8,wooo Slicks 5/16INcH3648 5/16 05/162329 5/16 3/62532 5/1601/23039 0/163/44256 3/8INcH3648 3/8 03/82940 3/8 01/23344 3/8 3/44764 I/3INcH3648 1/2 1/24052 1/23/45675 TRIANGULAR CUT BALSA 1/4 1/436 3/8 36 1/2 036 3/4 0 36 1 0 1 36 BALSA PLANKS 3/4336190 1236178 1336246 104036324 2236246 2336352 20436496 33o36524 3436728 27 31 40 50 65 BALSA SHEETS 1INcH3648 1/16 12939 3/32 3 1/8 13547 3/16 13952 1/4 0 14461 3/8 0 15777 1/2 0 17094 2iNcH3648 1/3223243 1/16023951 3/32 8 1/824964 3/16 7 1/426790 3/8282110 1/22121161 TAIBI 3iNcH3646 1/3234357 1/1634662 3/32 0 35675 1/836486 3/160377102 1/4390120 5/163110143 3/83128171 1/23161214 4INcH3648 1/3247093 1/19478108 3/32488117 /54 102 135 3/164 122 162 1/44 140 207 3/8 5 290 1/24 234 348 ing definite assets pursuit improved design construction techniques highperformance Sailplanes has flown competi tively since 1977 Nats placed sec ond first contest Through years has maintained diversi fied interest sport shown sampling accomplishments three-time winner International Slope Race winner first Mas ters Soaring contest winner 1989 Nats Hand-Launch event winner 20 consecutive cross-country events since 1983 course rec ords holder FAT certified World Record two National records declared dis tance 141 miles launch landing Joes wins accomplished planes own design using advanced composite construc tion methods Joe dedicated using knowl edge experience representing United States Soaring Holland Harleys latest design Sailplane enthusiasts name Harley can mean Harley Michaelis Walla Walla Hes designs pubContinued page 147 BIRCH PLY WOOD 1/84 12 12195 1/64 1224389 1/64 1248801 1/64048483204 1/481277 1/40120 12196 1/4012024314 1/4012048626 3/61212193 3/8 0 12 0 3/8 770 1/2 12 I2216 1/2 1224433 1/2 1248865 1/3261264 1/32 120 12127 1/320 1224257 1/320 1246506 1/1661283 1/160 /2 12125 1/16 1224250 1/16 1248500 3/3261297 3/321212194 3/320 12024387 3/32 1248774 1/8612107 1/80 12 12213 1/8 12 24425 TAPERED TRAILING 1/8 1248850 EDGE3648 3/16060 12791/80 1/22432 3/16 12 121063/16 3/43143 3/16 12243141/40 14258 3/16 12048626 5/16 11/44765 _________________ 3/80 1I/25677 * OPEN TO THE PUBLIC * LITE PLYWOOD 1/8121282 1/801224164 1/8 12048328 April 1991 49 Superior Aircraft Materials 12020-G Centralia iian Gardens California 90716 865-3220 Handling Charge S500 $375 COD mum Order $2000 plus UPS accept Personal checks COD fornia Residents add 68A Sales Tax pends suspect type aircraft question have no doubt lot experi mentation remains done Keith Shaw has demonstrated irrefutably sport Scale models fighter aircraft will fly very well aerobatic perform ance excess full Scale capability may same subjects built com petitive levels Scale fidelity atten dant higher wing loadings will comfort ably capable Scale flight maneuvers seems door open right now lot highly competitive Electric pow ered Scale airplanes make appear ance responding advertisers mention read about Model Aviation Soaring/Blakeslee Continued page 49 lished model magazines always seems think up better ways doing things No disre spect insurance agents Harley missed true callinghe should have aeronautical design engineer Harley sends us info lat est Enclosed some photos Open class Jouster refined sequel previous designsthe Atrix December 1986 MA Keetab June 1989 RCM Span 120 area 1038 sq all-up weight 60 70 oz de pending balsa grade radio gear used best far terms structure performance handlingthe bastion popular line kit Gliders flew 1990 sea son championships Northwest Soaring Society Others have used much-touted designs laud comparative performance handling Jouster-type airframes Jouster has all-foam-core wing un usually rigid flat center section has 3/8-in balsa vertical webs set between top bottom spars made up strips l/ ply cut 3A wide carbon fiber epoxy laminate between Sturdy receptacles receive spring steel support blades extending tip sections Tips lock simple mechanism couples aileron hardware Featured new type aileron driver thats easy make call DADS Direct Ail eron Drivers bind-free slop-free light sim ple totally internal no bellcrank ex ternal clevis threaded rod horn exit guide April 1991 147 Made America ILW American Technology RJL Manufactures USA RJL RIC & U/C ENGiNES 15 thru 61 Forster Glow & Ignition Engines ACTORY PARTS & SERVICE FOR HB Engines Cox Conquest 15 Kraft 61 Taipan AC HGK Engines Testor/McCoy Series 21 Forster Remco Viking twin Cot write free information RJL Industries P0 Box 5 Sierra Macire CA 91025 818 359-0016 S D A monthly publication covering International RC Soaring Scene mUSk $19 yr$261yrlstClsss CanadmilexIco $261yr US funds Asia & Pacific $421yr US funds Eun2pe & UK $3Wyr US fund Surface MaN ForsIgn 221yr US funds R/C SOARING DIGEST PO Box 6680 Concord CA 94524 LET US BUILD YOUR NEXT R/C AIR CRAFT WE WILL BUILD ANY AIR CRAFT INLUDING GIANT SCALE IN THE BONES OR READY TO FLY PROMPT DELIVERY NO DEPOSIT REQUIRED BYRON KITS WELCOME BUILT TO FLY CALL FOR PRICE QUOTE FRANK V PONTERI MODEL AIRCRAFT CO 609 391-1855 last time really enjayed building kit Stinson high quality hand cut kit lots vacuformed extras piece detailed Fiberglass Cowl Wire parts pre-bent complete hardware package included Kit requires 5 servos 7 flaps Wing Span 74 Wt 8-9 lbs Engine Sizes 60-120T FS 60-90 TS Plug Wing Panel easy transporting Go ahead Spoil Yourself Deserve ltl $15900 Postage & Handling Color Catalog nine other quality kits $300 info write Call 517-781-3000 Fax 517-781-4322 AERODROME MODELS LTD S Miller Rd naw Ml 48603 Servos center-clustered including wing helps preserve good roll response avoids long leads needed servos placed outboard Hidden A-in nylon bolts firmly secure wing After trying several newer airfoils Ive set tIed 5D7032 used has particularly pleasing handling thermaling characteristics wide speed range its thick enough typically used chords fully recess pop ular smaller servos Incidentally SD7037 wind tunnel model tested Princeton built model want known its polars en hanced paper-thin trailing edge would impractical field use Hence claims about its alleged superiority over 5D7032 S302 1 might taken grain salt Jousters curvaceous sturdy fuselage wood fin made light balsa glassed over painted rudder stab simple lightweight built-up structures Inte gral aluminum sharks teeth fit slot nose quick braldng needed wing placement light tail feathers balance generally attained using 800-mAh pack out additional lead fuselage profile retains pronounced droop snoot Ia Keetah keeps flaps off turf landing droop lowers centerof-gravity stabilizing pendulum effect avoids exasperating last-second belly rota tions ruin landings use both Airtronics Vision Ace Mi croPro radios functions needed op timize performance friend handles ship very well however using four-channel radio three-way Y-hamess runs rudder two aileron servos plugged aileron channel just pushes elevator stick ward needed pitch compensation down flap throttle stick Flaps reflexed speed throttle trim tab Jouster eliminates need spend fortune get fine performance cost materials wood adhesives hardware covering etc about $100 counting cores friend Harry Smith modelers modeler can provide dandy pink foam cores $35 including shipping address 814 Home Walla Walla WA 99362 Anyone interested Jouster might get Kee tah plans #1045 @ $1150 RC Modeler magazine have $12 package make Jouster includes complete new construc tion text detail sheets DADS fabrication spring steel bars fiberglass canopy latter eliminates need make male plug female mold canopy Im 26 5 Roosevelt Walla Walla WA 99362 telephone 509/5292562 Heres brief deseription Harley Michaelis DADS setup Picture three-inch-long 3A2 music wire MW shafts installed fore aft main part wing forward ailerons shafts ex tend inch beyond wings bent 45 0 angle same plane wing bent portions fit snug slots aileron front ends shafts bent 900 driven aileron pushrods As shafts rotate 450 bent wires move up down drive ai lerons Ingenious Vinylwrite Custom Lettering finish quarter-scale Roke ASK-18 needed ID num bers both sides fuselage bot tom left wing fuse numbers 25 high wing 6 high wasnt about attempt painting saw ad Vi nylwrite RC Soaring Digest sent off photo full-size ASK-iS copying ask ing what could Owner Art Morgen quick ly responded few samples suggested type style close what needed said Go self-sticking custom letters ber ries As received very thin 2-mil vinyl graphics properly spaced captured tween top bottom sheets peel off bot tom sheet place numbers whatever model rub down remove top sheet Thats process simple fast gives beautiful-looking lettering Art offers sizes shapes colors etc best bet write call information packet Vinylwrite 16043 Tulsa St Granada Hills CA 91344 telephone 818/363-7131 Seale Soaring Jamie Carpenter Concord NC kind enough send some photos beau tiful DG-300 following letter July 1990 issue MA showed picture Bill Wynans A-scale ASW 20 asked realistic can get Well after four years off-and-on work 600 hours design construction swer question Sailplane quarterscale DG-300 molded fuselage foam core wings stabilizer both balsa sheet ing parts plane did scratch-build Graupner spoilers struments H Designs pilot ship weighs 85 lb uses Eppler 214 airfoil Continued page 152 148 Model Aviation Stinson 108 T-50 uc7a CESSNSCAT QUAL Made 0 White Laminating Epoxy & Fiberglass Strong Lightweight No Pin Holes tle e Construction dor Fly McDaniel Power New Solid State On-Board Glow-Plug Drivers Now can drive 1 2 glow plugs efficiently automatically new McDaniel On-Board Glow-Plug Drivers engine 2 4 stroke glow has 1 2 cylinders Model 471 472 On-Board Glow-Plug Driver will ease jobs starting maintaining idle during taxiing power down ffight maneuvers FEATURES INCLUDE Servo Reversing Optically Coupled Circuitry No RH Automatic Shutdown Via TX RX Connector Plug Battery Pack Remote Glow Plug Indicator Panels Available Separately Battery Pack AC Charger NOT Included Available Separately See Local Hobby Dealer Contact McDaniel R/C Inc 1654 Crofton Blvd Suite 4 Crofton MD 21114 Soari ng/Blakeslee Continued page 147 gives very realistic flight speed would thrilled included picture column look forward seeing Scale projects featured Making own vacuwn pump Last months column contained Frank Westons article vacuum-bagging wings Franks remark about ing able make vacuum pump zero cost done right piqued inter#st seemed like challenge something akin scav enger hunt started visiting friend Ron Watts Colorado Springs Ron bag ging wings Pikes Peak SS guys told hed made pump refrigerator com pressor review refrigerator works com pressor increases pressure circulates refriger ant through condenser expansion valve evaporator take just compressor hook up hose inlet side exhaust outlet side have vacuum pump Recall per fect vacuum atmospheric pressure about 299 inches mercury 147 pounds per square Visa MC accepted Phone 301721-6303 301721-6306 inch sea level Ron used old GE refrigerator compressor got brothers appliance store California pulls about 22 inches steadily spits oil Out exhaust Apparently oil circu lates refrigerant lubricate compres sor Ron has exhaust pipe connected small tank serves oil separator Once opens valve lets oil drain back compressors oil reservoir Rons pump has homemade electronic vac uum regulator uses now-unavailable micro processor chip 30-lb Freon tank used reservoir tanks nonrefillable refrigeration shops throw away tip Julian Tamez excellent videotape Vacuum-Bag See Frank Westons ar ticle Channel 1 listing last months col umn Figuring Id let fingers walking got out Denver yellow pages combed through Refrigerator Repair listings Drew blank tried Appliance Repair found few places would sell used compressors around $50 New ones $150 up wasnt simple Frank implied Next Used Appliances section Pay dirt response query about junk refriger ators kind gentleman named Al said Yeah got dozen out back ing dump ke what want Once down excellent emporium located less savory section town discreetly asked Al junkers worked pointed Frigidaire said knew com pressor ran decided recondition refrigerator because too old So thats compressors scarce realized Used appliance dealers salvage good compressors re pair refrigerators have conked out Since knew zilch about business tried get quick course Al Seems loss re frigerant burned-out motors common faults Al added valves go wont pump over six inches vacuum Needs over 20 inches run fridge Before operate junk refrigerator choice refrigerant Freon similar gas should safely evacuated can hacksaw off inlet outlet pipes saving much possible Make sure get nec essary electrical partsnamely starting relay capacitor control thermostat inside cold space will wired relay isnt needed peculiarity Frigidaire com pressor rubber mounted between hefty steel bottom crossmember lower part cold-space sheet metal remove compres sor unbolt crossmember frame also noticed compressor ra diator piped up turned out oil cooler no external oil reservoir Rons GE Attached near inlet com pressor little cylinder about four inches long two inches diameter Al said filter decided Id better take crossmember along well length 4-in copper tubing hooked up icemaker Once home problem assemble everything compact pump possible Rons GE compressor four mounting feet made bolting wood base simple job crazy Frigidaire single rubber-clad posts top bottom wouldnt stand up itself Plus oil cooler stuck out 14 inches best course appeared to make use bottom mount crossmember Luckily compressor sitting bottom mount oil cooler just fit within length crossmember So crossmember would nicely base pump wire hoop could hold compressor base Freon tank could fit above cooler making piping runs short starting relay on/off switch would fit other side compressor next step obtaining other necessary parts especially vacuum regulator switch bit Serious Helicopter Hot Dogging PISTON/CYLINDER AbSEMBLIES Superior Horsepower wI Tuned Pipes True ABC Construction Finest Materials & Workmanship Arch Port Available OS SFN-RFN Other Types & Sizes Available Pattern Racing Send $100 complete Catalogue Engines Accessories PERFORMANCE SPECIALTIES 619-729-1658 PO Box 4003 Carlsbad CA 92008 152 Model Aviation asking around produced name Tom Overton member South Bay club Tom sells good subminiature adjustable switch $30 plus $2 S&H address 1302 Arleen Ave Sunnyvale CA 94007 bought vacuum gauge Grainger mechanical supply house $8 neighbor commercial re frigeration business gave both 30- 50pound Freon tanks bigger would efficient 30-pounder fit better piping retrospect Id recommend using A-ID vinyl tubing plastic tees Xs much possible theyre cheap produce good seal used A-in copper tubing icemaker three brass compression tees about $2 hardware store vac uum gauge switch could piped solidly tank thus freestanding use vinyl tubing brass pipe-threads-to-tubing adapters about $1 still required gauge switch Also parts would need mounted some sort panel valve Freon bottle has A-in cop per flare fitting dont have flaring tool ask folks purchase com pressor theyll flare end short piece copper along donating Freon tanknothing like making pest yourselr next obstacle what looked like inlet filter compressor stuck out too far Best cut off knew would danger ous because wasnt space use tubing cut ter hacksaw would make copper filings might later get sucked compressor Off went anyway already mess drilling out 5/ copper inlet pipe accept A-in copper couldnt hurt much shop vac wouldnt get filings Out inlet used small cotton swabs end tweezers carefully clean short length A-in copper soldered vinyl tubing could used connect pump rest plumbing Incidentally nothing inside filterlike part dont know what knowledgeable about refrigerator com pressors would care tell us about Id grateful letter electrical side Frigidaire straightforward Three wires go starting relay motor Al said extra wire includes capacitor starting winding cut 110-volt power cord added on/off switch obtained junk box Two wires connected vacuum switch replace thermostat wires controlling start ing relay caution note relay said Must mounted vertically Fine remained clamp vacuum hose would normally go bag plug power cord flip switch worked vacuum quickly built up max 23 inches played vacuum switch finally adjusting 15 incheswhich means pump goes off 15 comes 13 inches mercury supposed good vacuum extruded foams white bead-board lower gauge stayed quite constant pump off indicating vacuum wasnt leaking back through compressor piping con nections tight fact after pump shut off overnight still six inches vacuum next morning compressor runs very quietly no oil comes out ex haust Evidently doesnt need separator Rons does Some baggers use refrigerator compressors say shot compressor oil let time time good idea Thats other thing need learn about havent chance use pump bag ging yet Im sure will work okay Total inThkeA Load Off needs carry around deadweight Sullivan Skylite Its lightest conventional style wheel can buy Engineered unique foam core thin tough rubber skin Skylite cuts weight conventional wheel about half So can take off easier fly longer maneuver better Whats Skylites rugged build es re eated take- offs landings bit well its heftiest competitors never fails spring back round atter long model sits runway workbench So youve thinking about takingCsjJJii off weight talk dealer about seeingPRODUJIS light Skylite isPO Box 5166 Baltimore MD 21224 Getting Better Ideas Off Ground vestment about $56 mostly vacuum switch question long old pump like will last would costly ex tremely annoying fall $50 worth foam core carbon fiber glass cloth wet epoxy inside bag RC Pylon Racing/Hager Continued page 56 equipment racing ended after fifth round repairs made before racing would resume Sunday morning Saturday night food catered field stayed around presentation National Points Trophies Randy Ritch won national cham pionship followed Rony Barlevav Jim Allen R L Cranfill Dick Ritch Awards points given tenth place Racing started shortly after 900 am Sunday action picking up left off day before Gary Schmidt pushed Mike Del Ponte double cut round six put him down six points tighten things up quite bit Bob Nickle started Sunday off right putting what would fastest heat weekend 11745 round seven Randy Ritch Fred French fought lead against Doug White aker putting him down two points close races continued remainder day last round Spencer Wallace Jim Lime fought lead way finish line Spence turning 11910 Jims 11957 decision first place came down last heat day between Jim Allen Fred French Fred win would tied first Gary Schmidt have fly off result closest races either us ever Fred led first eight April 1991 153
Edition: Model Aviation - 1991/04
Page Numbers: 48, 49, 147, 148, 152, 153
The 1991 F3B team logo available pins patches T-shirts can ordered address given text US F3B team fundraising now full swing Soaring enthusiasts no doubt know United States has sent team F3B World Championships held other year since 1977 1991 World Champs will August Netherlands nearly 30 countries com peting Making up U S team top three fin ishers team selection finals held Denver last Labor DayLarry Jolly Daryl Perkins Joe Wurts Los Angeles area guys definitely world-class fliers believe have excellent shot winning World Champs team trophy something have never done Itll proud day American Sailplaners can pull off AMA pays entry fees transportation over seas living costs during contest team has substantial additional expense almost 48 Model Aviation Radio Confrol Soaring Byron Blakeslee 3134 N WInn*ago Dr Sdalla CO 80135 superlative quarter-scale DG-300 Jamie Carpenters Concord NH answer re alistic can get Jamie scratch-built everything Graupner spoilers instru ments H Designs pilot 8 1/2-lb Sailplane has molded fuselage foam core wings stab both balsa sheeted time RC Scale World Championships bold ID numbers fuse wing bottom Byrons -scale Roke ASK-la Vinyiwrite purchased good-flying ship Tony Arnoux imparts Miami years worth practice home week Europe just prior champs have traditionally supported team purchasing special logo souvenirs year Byron made vacuum pump wing bag ging old refrigerator compressor pump hss rope handles both ends Jamie Carpenters DG-300 aloft Eppier 27 long Building how-to text 214 airfoil gIves realistic flight speed Left Harley Michaeiiss latest Jouster won prestigious Northwest Soaring SocIetys 1990 Season Point Championship refined se quel Keetah its Harleys beat far terms structure performance handling Right Jouster has all-wood glassed-over fuselage all-foam-core wing unusually rigid fiat center section new type internal aileron driver called DADS tEA IN CONIRON J Losing control can night- modeling radio repair So avoid mare wrong response toa inflated repair costs undue given command can take its service time Radio South toll model fast economical inyour nerves e radio service wallet Radio South wejTI depend Radio know feel aboutElU h customer satisfaction hobby too areI] just motto Its avid RC enthusiasts way life nearly half century Let us put back control combined experienceincQj oil Free Order Line Orders Only Pleaserepair information 1-800-962-7802 5524 N Palafox Pensacola FL 32503 904 434-0909 pins patches T-shirts sale Prices $250 pin $300 patch $500 pinand-patch set $1200 T-shirt Dont get indicate T-shirt size Additional contribu tions team fund course welcome Please send order USA F3B Team Fund PO Box 3242 Lakewood CA 911703242 Team Manager Randy Spencer wrote say team practices going well Speed duration priority far dis tance practice begin soon team looking F3B events attend early part season help stay attuned pres sures actual contest conditions Randy also sent short biographical sketches of team members Im sure readers will interested learning about three magnificent fliers Larry Jolly started flying RC Sailplanes com petitively 1979 has won five Nats Sail plane competitions both Unlimited Stan dard classes Larry won first F3H World cross-country Sailplane championship held South Africa 1985 flying model own design member 1989 US F3B team placed 10th World champs held near Paris Larry known modelers LIMP kit manufacturing company produces line top Sailplane designs also recog nized activities movie world spe cial effects having built flown aircraft such films Die Hard Flight Intruder Miracle Landing Airwoif Larry Heli copter columnist Model Aviation con tributing columnist MAN magazine Daryl Perkins has flying Sailplanes since 1985 immediately drawn Slope Racing aspect sport because need speed quickly became premier fliers Slope Race circuit win ning 1988 1989 Hans Weiss Memorial Slope Race both classes 1989 Nats Slope Races club local races Drawing racing experience Daryl excels F3B speed distance tasks Joe Wurts design engineer working air craft conceptual design Lockheed Advanced Development company professional career training BS MS Aero EngineerBALSA WOOD 1/8iNcH3648 1/8 1/80912 BALSA WOOD1/6 3/161216 STICKS1/8 1/41418 1/8 3/817 22 1/16INcH3848 1/8 1/21826 1/16 1/16061/8 3/42635 1/163/3207 1/16 1/609 1/1603/1610 1/16 1/411 1/163/814 1/16 7 1/16 3/422 3/16iNcH3648 12 143/163/161416 16 3/16 1/41520 183/163/61722 213/16 127 303/16 3/43041 3/33INcH3648 I/4INcH3648 3/32 3/3208121/4 1/41722 3/32 1/810141/43/81927 3/323/1611161/4 1/22231 3/32 1/414171/4 445 3/323/61020 3/32 1/21722________ 3/32 533 Doobi BIa Wood Prce Sproce 004 8,wooo Slicks 5/16INcH3648 5/16 05/162329 5/16 3/62532 5/1601/23039 0/163/44256 3/8INcH3648 3/8 03/82940 3/8 01/23344 3/8 3/44764 I/3INcH3648 1/2 1/24052 1/23/45675 TRIANGULAR CUT BALSA 1/4 1/436 3/8 36 1/2 036 3/4 0 36 1 0 1 36 BALSA PLANKS 3/4336190 1236178 1336246 104036324 2236246 2336352 20436496 33o36524 3436728 27 31 40 50 65 BALSA SHEETS 1INcH3648 1/16 12939 3/32 3 1/8 13547 3/16 13952 1/4 0 14461 3/8 0 15777 1/2 0 17094 2iNcH3648 1/3223243 1/16023951 3/32 8 1/824964 3/16 7 1/426790 3/8282110 1/22121161 TAIBI 3iNcH3646 1/3234357 1/1634662 3/32 0 35675 1/836486 3/160377102 1/4390120 5/163110143 3/83128171 1/23161214 4INcH3648 1/3247093 1/19478108 3/32488117 /54 102 135 3/164 122 162 1/44 140 207 3/8 5 290 1/24 234 348 ing definite assets pursuit improved design construction techniques highperformance Sailplanes has flown competi tively since 1977 Nats placed sec ond first contest Through years has maintained diversi fied interest sport shown sampling accomplishments three-time winner International Slope Race winner first Mas ters Soaring contest winner 1989 Nats Hand-Launch event winner 20 consecutive cross-country events since 1983 course rec ords holder FAT certified World Record two National records declared dis tance 141 miles launch landing Joes wins accomplished planes own design using advanced composite construc tion methods Joe dedicated using knowl edge experience representing United States Soaring Holland Harleys latest design Sailplane enthusiasts name Harley can mean Harley Michaelis Walla Walla Hes designs pubContinued page 147 BIRCH PLY WOOD 1/84 12 12195 1/64 1224389 1/64 1248801 1/64048483204 1/481277 1/40120 12196 1/4012024314 1/4012048626 3/61212193 3/8 0 12 0 3/8 770 1/2 12 I2216 1/2 1224433 1/2 1248865 1/3261264 1/32 120 12127 1/320 1224257 1/320 1246506 1/1661283 1/160 /2 12125 1/16 1224250 1/16 1248500 3/3261297 3/321212194 3/320 12024387 3/32 1248774 1/8612107 1/80 12 12213 1/8 12 24425 TAPERED TRAILING 1/8 1248850 EDGE3648 3/16060 12791/80 1/22432 3/16 12 121063/16 3/43143 3/16 12243141/40 14258 3/16 12048626 5/16 11/44765 _________________ 3/80 1I/25677 * OPEN TO THE PUBLIC * LITE PLYWOOD 1/8121282 1/801224164 1/8 12048328 April 1991 49 Superior Aircraft Materials 12020-G Centralia iian Gardens California 90716 865-3220 Handling Charge S500 $375 COD mum Order $2000 plus UPS accept Personal checks COD fornia Residents add 68A Sales Tax pends suspect type aircraft question have no doubt lot experi mentation remains done Keith Shaw has demonstrated irrefutably sport Scale models fighter aircraft will fly very well aerobatic perform ance excess full Scale capability may same subjects built com petitive levels Scale fidelity atten dant higher wing loadings will comfort ably capable Scale flight maneuvers seems door open right now lot highly competitive Electric pow ered Scale airplanes make appear ance responding advertisers mention read about Model Aviation Soaring/Blakeslee Continued page 49 lished model magazines always seems think up better ways doing things No disre spect insurance agents Harley missed true callinghe should have aeronautical design engineer Harley sends us info lat est Enclosed some photos Open class Jouster refined sequel previous designsthe Atrix December 1986 MA Keetab June 1989 RCM Span 120 area 1038 sq all-up weight 60 70 oz de pending balsa grade radio gear used best far terms structure performance handlingthe bastion popular line kit Gliders flew 1990 sea son championships Northwest Soaring Society Others have used much-touted designs laud comparative performance handling Jouster-type airframes Jouster has all-foam-core wing un usually rigid flat center section has 3/8-in balsa vertical webs set between top bottom spars made up strips l/ ply cut 3A wide carbon fiber epoxy laminate between Sturdy receptacles receive spring steel support blades extending tip sections Tips lock simple mechanism couples aileron hardware Featured new type aileron driver thats easy make call DADS Direct Ail eron Drivers bind-free slop-free light sim ple totally internal no bellcrank ex ternal clevis threaded rod horn exit guide April 1991 147 Made America ILW American Technology RJL Manufactures USA RJL RIC & U/C ENGiNES 15 thru 61 Forster Glow & Ignition Engines ACTORY PARTS & SERVICE FOR HB Engines Cox Conquest 15 Kraft 61 Taipan AC HGK Engines Testor/McCoy Series 21 Forster Remco Viking twin Cot write free information RJL Industries P0 Box 5 Sierra Macire CA 91025 818 359-0016 S D A monthly publication covering International RC Soaring Scene mUSk $19 yr$261yrlstClsss CanadmilexIco $261yr US funds Asia & Pacific $421yr US funds Eun2pe & UK $3Wyr US fund Surface MaN ForsIgn 221yr US funds R/C SOARING DIGEST PO Box 6680 Concord CA 94524 LET US BUILD YOUR NEXT R/C AIR CRAFT WE WILL BUILD ANY AIR CRAFT INLUDING GIANT SCALE IN THE BONES OR READY TO FLY PROMPT DELIVERY NO DEPOSIT REQUIRED BYRON KITS WELCOME BUILT TO FLY CALL FOR PRICE QUOTE FRANK V PONTERI MODEL AIRCRAFT CO 609 391-1855 last time really enjayed building kit Stinson high quality hand cut kit lots vacuformed extras piece detailed Fiberglass Cowl Wire parts pre-bent complete hardware package included Kit requires 5 servos 7 flaps Wing Span 74 Wt 8-9 lbs Engine Sizes 60-120T FS 60-90 TS Plug Wing Panel easy transporting Go ahead Spoil Yourself Deserve ltl $15900 Postage & Handling Color Catalog nine other quality kits $300 info write Call 517-781-3000 Fax 517-781-4322 AERODROME MODELS LTD S Miller Rd naw Ml 48603 Servos center-clustered including wing helps preserve good roll response avoids long leads needed servos placed outboard Hidden A-in nylon bolts firmly secure wing After trying several newer airfoils Ive set tIed 5D7032 used has particularly pleasing handling thermaling characteristics wide speed range its thick enough typically used chords fully recess pop ular smaller servos Incidentally SD7037 wind tunnel model tested Princeton built model want known its polars en hanced paper-thin trailing edge would impractical field use Hence claims about its alleged superiority over 5D7032 S302 1 might taken grain salt Jousters curvaceous sturdy fuselage wood fin made light balsa glassed over painted rudder stab simple lightweight built-up structures Inte gral aluminum sharks teeth fit slot nose quick braldng needed wing placement light tail feathers balance generally attained using 800-mAh pack out additional lead fuselage profile retains pronounced droop snoot Ia Keetah keeps flaps off turf landing droop lowers centerof-gravity stabilizing pendulum effect avoids exasperating last-second belly rota tions ruin landings use both Airtronics Vision Ace Mi croPro radios functions needed op timize performance friend handles ship very well however using four-channel radio three-way Y-hamess runs rudder two aileron servos plugged aileron channel just pushes elevator stick ward needed pitch compensation down flap throttle stick Flaps reflexed speed throttle trim tab Jouster eliminates need spend fortune get fine performance cost materials wood adhesives hardware covering etc about $100 counting cores friend Harry Smith modelers modeler can provide dandy pink foam cores $35 including shipping address 814 Home Walla Walla WA 99362 Anyone interested Jouster might get Kee tah plans #1045 @ $1150 RC Modeler magazine have $12 package make Jouster includes complete new construc tion text detail sheets DADS fabrication spring steel bars fiberglass canopy latter eliminates need make male plug female mold canopy Im 26 5 Roosevelt Walla Walla WA 99362 telephone 509/5292562 Heres brief deseription Harley Michaelis DADS setup Picture three-inch-long 3A2 music wire MW shafts installed fore aft main part wing forward ailerons shafts ex tend inch beyond wings bent 45 0 angle same plane wing bent portions fit snug slots aileron front ends shafts bent 900 driven aileron pushrods As shafts rotate 450 bent wires move up down drive ai lerons Ingenious Vinylwrite Custom Lettering finish quarter-scale Roke ASK-18 needed ID num bers both sides fuselage bot tom left wing fuse numbers 25 high wing 6 high wasnt about attempt painting saw ad Vi nylwrite RC Soaring Digest sent off photo full-size ASK-iS copying ask ing what could Owner Art Morgen quick ly responded few samples suggested type style close what needed said Go self-sticking custom letters ber ries As received very thin 2-mil vinyl graphics properly spaced captured tween top bottom sheets peel off bot tom sheet place numbers whatever model rub down remove top sheet Thats process simple fast gives beautiful-looking lettering Art offers sizes shapes colors etc best bet write call information packet Vinylwrite 16043 Tulsa St Granada Hills CA 91344 telephone 818/363-7131 Seale Soaring Jamie Carpenter Concord NC kind enough send some photos beau tiful DG-300 following letter July 1990 issue MA showed picture Bill Wynans A-scale ASW 20 asked realistic can get Well after four years off-and-on work 600 hours design construction swer question Sailplane quarterscale DG-300 molded fuselage foam core wings stabilizer both balsa sheet ing parts plane did scratch-build Graupner spoilers struments H Designs pilot ship weighs 85 lb uses Eppler 214 airfoil Continued page 152 148 Model Aviation Stinson 108 T-50 uc7a CESSNSCAT QUAL Made 0 White Laminating Epoxy & Fiberglass Strong Lightweight No Pin Holes tle e Construction dor Fly McDaniel Power New Solid State On-Board Glow-Plug Drivers Now can drive 1 2 glow plugs efficiently automatically new McDaniel On-Board Glow-Plug Drivers engine 2 4 stroke glow has 1 2 cylinders Model 471 472 On-Board Glow-Plug Driver will ease jobs starting maintaining idle during taxiing power down ffight maneuvers FEATURES INCLUDE Servo Reversing Optically Coupled Circuitry No RH Automatic Shutdown Via TX RX Connector Plug Battery Pack Remote Glow Plug Indicator Panels Available Separately Battery Pack AC Charger NOT Included Available Separately See Local Hobby Dealer Contact McDaniel R/C Inc 1654 Crofton Blvd Suite 4 Crofton MD 21114 Soari ng/Blakeslee Continued page 147 gives very realistic flight speed would thrilled included picture column look forward seeing Scale projects featured Making own vacuwn pump Last months column contained Frank Westons article vacuum-bagging wings Franks remark about ing able make vacuum pump zero cost done right piqued inter#st seemed like challenge something akin scav enger hunt started visiting friend Ron Watts Colorado Springs Ron bag ging wings Pikes Peak SS guys told hed made pump refrigerator com pressor review refrigerator works com pressor increases pressure circulates refriger ant through condenser expansion valve evaporator take just compressor hook up hose inlet side exhaust outlet side have vacuum pump Recall per fect vacuum atmospheric pressure about 299 inches mercury 147 pounds per square Visa MC accepted Phone 301721-6303 301721-6306 inch sea level Ron used old GE refrigerator compressor got brothers appliance store California pulls about 22 inches steadily spits oil Out exhaust Apparently oil circu lates refrigerant lubricate compres sor Ron has exhaust pipe connected small tank serves oil separator Once opens valve lets oil drain back compressors oil reservoir Rons pump has homemade electronic vac uum regulator uses now-unavailable micro processor chip 30-lb Freon tank used reservoir tanks nonrefillable refrigeration shops throw away tip Julian Tamez excellent videotape Vacuum-Bag See Frank Westons ar ticle Channel 1 listing last months col umn Figuring Id let fingers walking got out Denver yellow pages combed through Refrigerator Repair listings Drew blank tried Appliance Repair found few places would sell used compressors around $50 New ones $150 up wasnt simple Frank implied Next Used Appliances section Pay dirt response query about junk refriger ators kind gentleman named Al said Yeah got dozen out back ing dump ke what want Once down excellent emporium located less savory section town discreetly asked Al junkers worked pointed Frigidaire said knew com pressor ran decided recondition refrigerator because too old So thats compressors scarce realized Used appliance dealers salvage good compressors re pair refrigerators have conked out Since knew zilch about business tried get quick course Al Seems loss re frigerant burned-out motors common faults Al added valves go wont pump over six inches vacuum Needs over 20 inches run fridge Before operate junk refrigerator choice refrigerant Freon similar gas should safely evacuated can hacksaw off inlet outlet pipes saving much possible Make sure get nec essary electrical partsnamely starting relay capacitor control thermostat inside cold space will wired relay isnt needed peculiarity Frigidaire com pressor rubber mounted between hefty steel bottom crossmember lower part cold-space sheet metal remove compres sor unbolt crossmember frame also noticed compressor ra diator piped up turned out oil cooler no external oil reservoir Rons GE Attached near inlet com pressor little cylinder about four inches long two inches diameter Al said filter decided Id better take crossmember along well length 4-in copper tubing hooked up icemaker Once home problem assemble everything compact pump possible Rons GE compressor four mounting feet made bolting wood base simple job crazy Frigidaire single rubber-clad posts top bottom wouldnt stand up itself Plus oil cooler stuck out 14 inches best course appeared to make use bottom mount crossmember Luckily compressor sitting bottom mount oil cooler just fit within length crossmember So crossmember would nicely base pump wire hoop could hold compressor base Freon tank could fit above cooler making piping runs short starting relay on/off switch would fit other side compressor next step obtaining other necessary parts especially vacuum regulator switch bit Serious Helicopter Hot Dogging PISTON/CYLINDER AbSEMBLIES Superior Horsepower wI Tuned Pipes True ABC Construction Finest Materials & Workmanship Arch Port Available OS SFN-RFN Other Types & Sizes Available Pattern Racing Send $100 complete Catalogue Engines Accessories PERFORMANCE SPECIALTIES 619-729-1658 PO Box 4003 Carlsbad CA 92008 152 Model Aviation asking around produced name Tom Overton member South Bay club Tom sells good subminiature adjustable switch $30 plus $2 S&H address 1302 Arleen Ave Sunnyvale CA 94007 bought vacuum gauge Grainger mechanical supply house $8 neighbor commercial re frigeration business gave both 30- 50pound Freon tanks bigger would efficient 30-pounder fit better piping retrospect Id recommend using A-ID vinyl tubing plastic tees Xs much possible theyre cheap produce good seal used A-in copper tubing icemaker three brass compression tees about $2 hardware store vac uum gauge switch could piped solidly tank thus freestanding use vinyl tubing brass pipe-threads-to-tubing adapters about $1 still required gauge switch Also parts would need mounted some sort panel valve Freon bottle has A-in cop per flare fitting dont have flaring tool ask folks purchase com pressor theyll flare end short piece copper along donating Freon tanknothing like making pest yourselr next obstacle what looked like inlet filter compressor stuck out too far Best cut off knew would danger ous because wasnt space use tubing cut ter hacksaw would make copper filings might later get sucked compressor Off went anyway already mess drilling out 5/ copper inlet pipe accept A-in copper couldnt hurt much shop vac wouldnt get filings Out inlet used small cotton swabs end tweezers carefully clean short length A-in copper soldered vinyl tubing could used connect pump rest plumbing Incidentally nothing inside filterlike part dont know what knowledgeable about refrigerator com pressors would care tell us about Id grateful letter electrical side Frigidaire straightforward Three wires go starting relay motor Al said extra wire includes capacitor starting winding cut 110-volt power cord added on/off switch obtained junk box Two wires connected vacuum switch replace thermostat wires controlling start ing relay caution note relay said Must mounted vertically Fine remained clamp vacuum hose would normally go bag plug power cord flip switch worked vacuum quickly built up max 23 inches played vacuum switch finally adjusting 15 incheswhich means pump goes off 15 comes 13 inches mercury supposed good vacuum extruded foams white bead-board lower gauge stayed quite constant pump off indicating vacuum wasnt leaking back through compressor piping con nections tight fact after pump shut off overnight still six inches vacuum next morning compressor runs very quietly no oil comes out ex haust Evidently doesnt need separator Rons does Some baggers use refrigerator compressors say shot compressor oil let time time good idea Thats other thing need learn about havent chance use pump bag ging yet Im sure will work okay Total inThkeA Load Off needs carry around deadweight Sullivan Skylite Its lightest conventional style wheel can buy Engineered unique foam core thin tough rubber skin Skylite cuts weight conventional wheel about half So can take off easier fly longer maneuver better Whats Skylites rugged build es re eated take- offs landings bit well its heftiest competitors never fails spring back round atter long model sits runway workbench So youve thinking about takingCsjJJii off weight talk dealer about seeingPRODUJIS light Skylite isPO Box 5166 Baltimore MD 21224 Getting Better Ideas Off Ground vestment about $56 mostly vacuum switch question long old pump like will last would costly ex tremely annoying fall $50 worth foam core carbon fiber glass cloth wet epoxy inside bag RC Pylon Racing/Hager Continued page 56 equipment racing ended after fifth round repairs made before racing would resume Sunday morning Saturday night food catered field stayed around presentation National Points Trophies Randy Ritch won national cham pionship followed Rony Barlevav Jim Allen R L Cranfill Dick Ritch Awards points given tenth place Racing started shortly after 900 am Sunday action picking up left off day before Gary Schmidt pushed Mike Del Ponte double cut round six put him down six points tighten things up quite bit Bob Nickle started Sunday off right putting what would fastest heat weekend 11745 round seven Randy Ritch Fred French fought lead against Doug White aker putting him down two points close races continued remainder day last round Spencer Wallace Jim Lime fought lead way finish line Spence turning 11910 Jims 11957 decision first place came down last heat day between Jim Allen Fred French Fred win would tied first Gary Schmidt have fly off result closest races either us ever Fred led first eight April 1991 153
Edition: Model Aviation - 1991/04
Page Numbers: 48, 49, 147, 148, 152, 153
The 1991 F3B team logo available pins patches T-shirts can ordered address given text US F3B team fundraising now full swing Soaring enthusiasts no doubt know United States has sent team F3B World Championships held other year since 1977 1991 World Champs will August Netherlands nearly 30 countries com peting Making up U S team top three fin ishers team selection finals held Denver last Labor DayLarry Jolly Daryl Perkins Joe Wurts Los Angeles area guys definitely world-class fliers believe have excellent shot winning World Champs team trophy something have never done Itll proud day American Sailplaners can pull off AMA pays entry fees transportation over seas living costs during contest team has substantial additional expense almost 48 Model Aviation Radio Confrol Soaring Byron Blakeslee 3134 N WInn*ago Dr Sdalla CO 80135 superlative quarter-scale DG-300 Jamie Carpenters Concord NH answer re alistic can get Jamie scratch-built everything Graupner spoilers instru ments H Designs pilot 8 1/2-lb Sailplane has molded fuselage foam core wings stab both balsa sheeted time RC Scale World Championships bold ID numbers fuse wing bottom Byrons -scale Roke ASK-la Vinyiwrite purchased good-flying ship Tony Arnoux imparts Miami years worth practice home week Europe just prior champs have traditionally supported team purchasing special logo souvenirs year Byron made vacuum pump wing bag ging old refrigerator compressor pump hss rope handles both ends Jamie Carpenters DG-300 aloft Eppier 27 long Building how-to text 214 airfoil gIves realistic flight speed Left Harley Michaeiiss latest Jouster won prestigious Northwest Soaring SocIetys 1990 Season Point Championship refined se quel Keetah its Harleys beat far terms structure performance handling Right Jouster has all-wood glassed-over fuselage all-foam-core wing unusually rigid fiat center section new type internal aileron driver called DADS tEA IN CONIRON J Losing control can night- modeling radio repair So avoid mare wrong response toa inflated repair costs undue given command can take its service time Radio South toll model fast economical inyour nerves e radio service wallet Radio South wejTI depend Radio know feel aboutElU h customer satisfaction hobby too areI] just motto Its avid RC enthusiasts way life nearly half century Let us put back control combined experienceincQj oil Free Order Line Orders Only Pleaserepair information 1-800-962-7802 5524 N Palafox Pensacola FL 32503 904 434-0909 pins patches T-shirts sale Prices $250 pin $300 patch $500 pinand-patch set $1200 T-shirt Dont get indicate T-shirt size Additional contribu tions team fund course welcome Please send order USA F3B Team Fund PO Box 3242 Lakewood CA 911703242 Team Manager Randy Spencer wrote say team practices going well Speed duration priority far dis tance practice begin soon team looking F3B events attend early part season help stay attuned pres sures actual contest conditions Randy also sent short biographical sketches of team members Im sure readers will interested learning about three magnificent fliers Larry Jolly started flying RC Sailplanes com petitively 1979 has won five Nats Sail plane competitions both Unlimited Stan dard classes Larry won first F3H World cross-country Sailplane championship held South Africa 1985 flying model own design member 1989 US F3B team placed 10th World champs held near Paris Larry known modelers LIMP kit manufacturing company produces line top Sailplane designs also recog nized activities movie world spe cial effects having built flown aircraft such films Die Hard Flight Intruder Miracle Landing Airwoif Larry Heli copter columnist Model Aviation con tributing columnist MAN magazine Daryl Perkins has flying Sailplanes since 1985 immediately drawn Slope Racing aspect sport because need speed quickly became premier fliers Slope Race circuit win ning 1988 1989 Hans Weiss Memorial Slope Race both classes 1989 Nats Slope Races club local races Drawing racing experience Daryl excels F3B speed distance tasks Joe Wurts design engineer working air craft conceptual design Lockheed Advanced Development company professional career training BS MS Aero EngineerBALSA WOOD 1/8iNcH3648 1/8 1/80912 BALSA WOOD1/6 3/161216 STICKS1/8 1/41418 1/8 3/817 22 1/16INcH3848 1/8 1/21826 1/16 1/16061/8 3/42635 1/163/3207 1/16 1/609 1/1603/1610 1/16 1/411 1/163/814 1/16 7 1/16 3/422 3/16iNcH3648 12 143/163/161416 16 3/16 1/41520 183/163/61722 213/16 127 303/16 3/43041 3/33INcH3648 I/4INcH3648 3/32 3/3208121/4 1/41722 3/32 1/810141/43/81927 3/323/1611161/4 1/22231 3/32 1/414171/4 445 3/323/61020 3/32 1/21722________ 3/32 533 Doobi BIa Wood Prce Sproce 004 8,wooo Slicks 5/16INcH3648 5/16 05/162329 5/16 3/62532 5/1601/23039 0/163/44256 3/8INcH3648 3/8 03/82940 3/8 01/23344 3/8 3/44764 I/3INcH3648 1/2 1/24052 1/23/45675 TRIANGULAR CUT BALSA 1/4 1/436 3/8 36 1/2 036 3/4 0 36 1 0 1 36 BALSA PLANKS 3/4336190 1236178 1336246 104036324 2236246 2336352 20436496 33o36524 3436728 27 31 40 50 65 BALSA SHEETS 1INcH3648 1/16 12939 3/32 3 1/8 13547 3/16 13952 1/4 0 14461 3/8 0 15777 1/2 0 17094 2iNcH3648 1/3223243 1/16023951 3/32 8 1/824964 3/16 7 1/426790 3/8282110 1/22121161 TAIBI 3iNcH3646 1/3234357 1/1634662 3/32 0 35675 1/836486 3/160377102 1/4390120 5/163110143 3/83128171 1/23161214 4INcH3648 1/3247093 1/19478108 3/32488117 /54 102 135 3/164 122 162 1/44 140 207 3/8 5 290 1/24 234 348 ing definite assets pursuit improved design construction techniques highperformance Sailplanes has flown competi tively since 1977 Nats placed sec ond first contest Through years has maintained diversi fied interest sport shown sampling accomplishments three-time winner International Slope Race winner first Mas ters Soaring contest winner 1989 Nats Hand-Launch event winner 20 consecutive cross-country events since 1983 course rec ords holder FAT certified World Record two National records declared dis tance 141 miles launch landing Joes wins accomplished planes own design using advanced composite construc tion methods Joe dedicated using knowl edge experience representing United States Soaring Holland Harleys latest design Sailplane enthusiasts name Harley can mean Harley Michaelis Walla Walla Hes designs pubContinued page 147 BIRCH PLY WOOD 1/84 12 12195 1/64 1224389 1/64 1248801 1/64048483204 1/481277 1/40120 12196 1/4012024314 1/4012048626 3/61212193 3/8 0 12 0 3/8 770 1/2 12 I2216 1/2 1224433 1/2 1248865 1/3261264 1/32 120 12127 1/320 1224257 1/320 1246506 1/1661283 1/160 /2 12125 1/16 1224250 1/16 1248500 3/3261297 3/321212194 3/320 12024387 3/32 1248774 1/8612107 1/80 12 12213 1/8 12 24425 TAPERED TRAILING 1/8 1248850 EDGE3648 3/16060 12791/80 1/22432 3/16 12 121063/16 3/43143 3/16 12243141/40 14258 3/16 12048626 5/16 11/44765 _________________ 3/80 1I/25677 * OPEN TO THE PUBLIC * LITE PLYWOOD 1/8121282 1/801224164 1/8 12048328 April 1991 49 Superior Aircraft Materials 12020-G Centralia iian Gardens California 90716 865-3220 Handling Charge S500 $375 COD mum Order $2000 plus UPS accept Personal checks COD fornia Residents add 68A Sales Tax pends suspect type aircraft question have no doubt lot experi mentation remains done Keith Shaw has demonstrated irrefutably sport Scale models fighter aircraft will fly very well aerobatic perform ance excess full Scale capability may same subjects built com petitive levels Scale fidelity atten dant higher wing loadings will comfort ably capable Scale flight maneuvers seems door open right now lot highly competitive Electric pow ered Scale airplanes make appear ance responding advertisers mention read about Model Aviation Soaring/Blakeslee Continued page 49 lished model magazines always seems think up better ways doing things No disre spect insurance agents Harley missed true callinghe should have aeronautical design engineer Harley sends us info lat est Enclosed some photos Open class Jouster refined sequel previous designsthe Atrix December 1986 MA Keetab June 1989 RCM Span 120 area 1038 sq all-up weight 60 70 oz de pending balsa grade radio gear used best far terms structure performance handlingthe bastion popular line kit Gliders flew 1990 sea son championships Northwest Soaring Society Others have used much-touted designs laud comparative performance handling Jouster-type airframes Jouster has all-foam-core wing un usually rigid flat center section has 3/8-in balsa vertical webs set between top bottom spars made up strips l/ ply cut 3A wide carbon fiber epoxy laminate between Sturdy receptacles receive spring steel support blades extending tip sections Tips lock simple mechanism couples aileron hardware Featured new type aileron driver thats easy make call DADS Direct Ail eron Drivers bind-free slop-free light sim ple totally internal no bellcrank ex ternal clevis threaded rod horn exit guide April 1991 147 Made America ILW American Technology RJL Manufactures USA RJL RIC & U/C ENGiNES 15 thru 61 Forster Glow & Ignition Engines ACTORY PARTS & SERVICE FOR HB Engines Cox Conquest 15 Kraft 61 Taipan AC HGK Engines Testor/McCoy Series 21 Forster Remco Viking twin Cot write free information RJL Industries P0 Box 5 Sierra Macire CA 91025 818 359-0016 S D A monthly publication covering International RC Soaring Scene mUSk $19 yr$261yrlstClsss CanadmilexIco $261yr US funds Asia & Pacific $421yr US funds Eun2pe & UK $3Wyr US fund Surface MaN ForsIgn 221yr US funds R/C SOARING DIGEST PO Box 6680 Concord CA 94524 LET US BUILD YOUR NEXT R/C AIR CRAFT WE WILL BUILD ANY AIR CRAFT INLUDING GIANT SCALE IN THE BONES OR READY TO FLY PROMPT DELIVERY NO DEPOSIT REQUIRED BYRON KITS WELCOME BUILT TO FLY CALL FOR PRICE QUOTE FRANK V PONTERI MODEL AIRCRAFT CO 609 391-1855 last time really enjayed building kit Stinson high quality hand cut kit lots vacuformed extras piece detailed Fiberglass Cowl Wire parts pre-bent complete hardware package included Kit requires 5 servos 7 flaps Wing Span 74 Wt 8-9 lbs Engine Sizes 60-120T FS 60-90 TS Plug Wing Panel easy transporting Go ahead Spoil Yourself Deserve ltl $15900 Postage & Handling Color Catalog nine other quality kits $300 info write Call 517-781-3000 Fax 517-781-4322 AERODROME MODELS LTD S Miller Rd naw Ml 48603 Servos center-clustered including wing helps preserve good roll response avoids long leads needed servos placed outboard Hidden A-in nylon bolts firmly secure wing After trying several newer airfoils Ive set tIed 5D7032 used has particularly pleasing handling thermaling characteristics wide speed range its thick enough typically used chords fully recess pop ular smaller servos Incidentally SD7037 wind tunnel model tested Princeton built model want known its polars en hanced paper-thin trailing edge would impractical field use Hence claims about its alleged superiority over 5D7032 S302 1 might taken grain salt Jousters curvaceous sturdy fuselage wood fin made light balsa glassed over painted rudder stab simple lightweight built-up structures Inte gral aluminum sharks teeth fit slot nose quick braldng needed wing placement light tail feathers balance generally attained using 800-mAh pack out additional lead fuselage profile retains pronounced droop snoot Ia Keetah keeps flaps off turf landing droop lowers centerof-gravity stabilizing pendulum effect avoids exasperating last-second belly rota tions ruin landings use both Airtronics Vision Ace Mi croPro radios functions needed op timize performance friend handles ship very well however using four-channel radio three-way Y-hamess runs rudder two aileron servos plugged aileron channel just pushes elevator stick ward needed pitch compensation down flap throttle stick Flaps reflexed speed throttle trim tab Jouster eliminates need spend fortune get fine performance cost materials wood adhesives hardware covering etc about $100 counting cores friend Harry Smith modelers modeler can provide dandy pink foam cores $35 including shipping address 814 Home Walla Walla WA 99362 Anyone interested Jouster might get Kee tah plans #1045 @ $1150 RC Modeler magazine have $12 package make Jouster includes complete new construc tion text detail sheets DADS fabrication spring steel bars fiberglass canopy latter eliminates need make male plug female mold canopy Im 26 5 Roosevelt Walla Walla WA 99362 telephone 509/5292562 Heres brief deseription Harley Michaelis DADS setup Picture three-inch-long 3A2 music wire MW shafts installed fore aft main part wing forward ailerons shafts ex tend inch beyond wings bent 45 0 angle same plane wing bent portions fit snug slots aileron front ends shafts bent 900 driven aileron pushrods As shafts rotate 450 bent wires move up down drive ai lerons Ingenious Vinylwrite Custom Lettering finish quarter-scale Roke ASK-18 needed ID num bers both sides fuselage bot tom left wing fuse numbers 25 high wing 6 high wasnt about attempt painting saw ad Vi nylwrite RC Soaring Digest sent off photo full-size ASK-iS copying ask ing what could Owner Art Morgen quick ly responded few samples suggested type style close what needed said Go self-sticking custom letters ber ries As received very thin 2-mil vinyl graphics properly spaced captured tween top bottom sheets peel off bot tom sheet place numbers whatever model rub down remove top sheet Thats process simple fast gives beautiful-looking lettering Art offers sizes shapes colors etc best bet write call information packet Vinylwrite 16043 Tulsa St Granada Hills CA 91344 telephone 818/363-7131 Seale Soaring Jamie Carpenter Concord NC kind enough send some photos beau tiful DG-300 following letter July 1990 issue MA showed picture Bill Wynans A-scale ASW 20 asked realistic can get Well after four years off-and-on work 600 hours design construction swer question Sailplane quarterscale DG-300 molded fuselage foam core wings stabilizer both balsa sheet ing parts plane did scratch-build Graupner spoilers struments H Designs pilot ship weighs 85 lb uses Eppler 214 airfoil Continued page 152 148 Model Aviation Stinson 108 T-50 uc7a CESSNSCAT QUAL Made 0 White Laminating Epoxy & Fiberglass Strong Lightweight No Pin Holes tle e Construction dor Fly McDaniel Power New Solid State On-Board Glow-Plug Drivers Now can drive 1 2 glow plugs efficiently automatically new McDaniel On-Board Glow-Plug Drivers engine 2 4 stroke glow has 1 2 cylinders Model 471 472 On-Board Glow-Plug Driver will ease jobs starting maintaining idle during taxiing power down ffight maneuvers FEATURES INCLUDE Servo Reversing Optically Coupled Circuitry No RH Automatic Shutdown Via TX RX Connector Plug Battery Pack Remote Glow Plug Indicator Panels Available Separately Battery Pack AC Charger NOT Included Available Separately See Local Hobby Dealer Contact McDaniel R/C Inc 1654 Crofton Blvd Suite 4 Crofton MD 21114 Soari ng/Blakeslee Continued page 147 gives very realistic flight speed would thrilled included picture column look forward seeing Scale projects featured Making own vacuwn pump Last months column contained Frank Westons article vacuum-bagging wings Franks remark about ing able make vacuum pump zero cost done right piqued inter#st seemed like challenge something akin scav enger hunt started visiting friend Ron Watts Colorado Springs Ron bag ging wings Pikes Peak SS guys told hed made pump refrigerator com pressor review refrigerator works com pressor increases pressure circulates refriger ant through condenser expansion valve evaporator take just compressor hook up hose inlet side exhaust outlet side have vacuum pump Recall per fect vacuum atmospheric pressure about 299 inches mercury 147 pounds per square Visa MC accepted Phone 301721-6303 301721-6306 inch sea level Ron used old GE refrigerator compressor got brothers appliance store California pulls about 22 inches steadily spits oil Out exhaust Apparently oil circu lates refrigerant lubricate compres sor Ron has exhaust pipe connected small tank serves oil separator Once opens valve lets oil drain back compressors oil reservoir Rons pump has homemade electronic vac uum regulator uses now-unavailable micro processor chip 30-lb Freon tank used reservoir tanks nonrefillable refrigeration shops throw away tip Julian Tamez excellent videotape Vacuum-Bag See Frank Westons ar ticle Channel 1 listing last months col umn Figuring Id let fingers walking got out Denver yellow pages combed through Refrigerator Repair listings Drew blank tried Appliance Repair found few places would sell used compressors around $50 New ones $150 up wasnt simple Frank implied Next Used Appliances section Pay dirt response query about junk refriger ators kind gentleman named Al said Yeah got dozen out back ing dump ke what want Once down excellent emporium located less savory section town discreetly asked Al junkers worked pointed Frigidaire said knew com pressor ran decided recondition refrigerator because too old So thats compressors scarce realized Used appliance dealers salvage good compressors re pair refrigerators have conked out Since knew zilch about business tried get quick course Al Seems loss re frigerant burned-out motors common faults Al added valves go wont pump over six inches vacuum Needs over 20 inches run fridge Before operate junk refrigerator choice refrigerant Freon similar gas should safely evacuated can hacksaw off inlet outlet pipes saving much possible Make sure get nec essary electrical partsnamely starting relay capacitor control thermostat inside cold space will wired relay isnt needed peculiarity Frigidaire com pressor rubber mounted between hefty steel bottom crossmember lower part cold-space sheet metal remove compres sor unbolt crossmember frame also noticed compressor ra diator piped up turned out oil cooler no external oil reservoir Rons GE Attached near inlet com pressor little cylinder about four inches long two inches diameter Al said filter decided Id better take crossmember along well length 4-in copper tubing hooked up icemaker Once home problem assemble everything compact pump possible Rons GE compressor four mounting feet made bolting wood base simple job crazy Frigidaire single rubber-clad posts top bottom wouldnt stand up itself Plus oil cooler stuck out 14 inches best course appeared to make use bottom mount crossmember Luckily compressor sitting bottom mount oil cooler just fit within length crossmember So crossmember would nicely base pump wire hoop could hold compressor base Freon tank could fit above cooler making piping runs short starting relay on/off switch would fit other side compressor next step obtaining other necessary parts especially vacuum regulator switch bit Serious Helicopter Hot Dogging PISTON/CYLINDER AbSEMBLIES Superior Horsepower wI Tuned Pipes True ABC Construction Finest Materials & Workmanship Arch Port Available OS SFN-RFN Other Types & Sizes Available Pattern Racing Send $100 complete Catalogue Engines Accessories PERFORMANCE SPECIALTIES 619-729-1658 PO Box 4003 Carlsbad CA 92008 152 Model Aviation asking around produced name Tom Overton member South Bay club Tom sells good subminiature adjustable switch $30 plus $2 S&H address 1302 Arleen Ave Sunnyvale CA 94007 bought vacuum gauge Grainger mechanical supply house $8 neighbor commercial re frigeration business gave both 30- 50pound Freon tanks bigger would efficient 30-pounder fit better piping retrospect Id recommend using A-ID vinyl tubing plastic tees Xs much possible theyre cheap produce good seal used A-in copper tubing icemaker three brass compression tees about $2 hardware store vac uum gauge switch could piped solidly tank thus freestanding use vinyl tubing brass pipe-threads-to-tubing adapters about $1 still required gauge switch Also parts would need mounted some sort panel valve Freon bottle has A-in cop per flare fitting dont have flaring tool ask folks purchase com pressor theyll flare end short piece copper along donating Freon tanknothing like making pest yourselr next obstacle what looked like inlet filter compressor stuck out too far Best cut off knew would danger ous because wasnt space use tubing cut ter hacksaw would make copper filings might later get sucked compressor Off went anyway already mess drilling out 5/ copper inlet pipe accept A-in copper couldnt hurt much shop vac wouldnt get filings Out inlet used small cotton swabs end tweezers carefully clean short length A-in copper soldered vinyl tubing could used connect pump rest plumbing Incidentally nothing inside filterlike part dont know what knowledgeable about refrigerator com pressors would care tell us about Id grateful letter electrical side Frigidaire straightforward Three wires go starting relay motor Al said extra wire includes capacitor starting winding cut 110-volt power cord added on/off switch obtained junk box Two wires connected vacuum switch replace thermostat wires controlling start ing relay caution note relay said Must mounted vertically Fine remained clamp vacuum hose would normally go bag plug power cord flip switch worked vacuum quickly built up max 23 inches played vacuum switch finally adjusting 15 incheswhich means pump goes off 15 comes 13 inches mercury supposed good vacuum extruded foams white bead-board lower gauge stayed quite constant pump off indicating vacuum wasnt leaking back through compressor piping con nections tight fact after pump shut off overnight still six inches vacuum next morning compressor runs very quietly no oil comes out ex haust Evidently doesnt need separator Rons does Some baggers use refrigerator compressors say shot compressor oil let time time good idea Thats other thing need learn about havent chance use pump bag ging yet Im sure will work okay Total inThkeA Load Off needs carry around deadweight Sullivan Skylite Its lightest conventional style wheel can buy Engineered unique foam core thin tough rubber skin Skylite cuts weight conventional wheel about half So can take off easier fly longer maneuver better Whats Skylites rugged build es re eated take- offs landings bit well its heftiest competitors never fails spring back round atter long model sits runway workbench So youve thinking about takingCsjJJii off weight talk dealer about seeingPRODUJIS light Skylite isPO Box 5166 Baltimore MD 21224 Getting Better Ideas Off Ground vestment about $56 mostly vacuum switch question long old pump like will last would costly ex tremely annoying fall $50 worth foam core carbon fiber glass cloth wet epoxy inside bag RC Pylon Racing/Hager Continued page 56 equipment racing ended after fifth round repairs made before racing would resume Sunday morning Saturday night food catered field stayed around presentation National Points Trophies Randy Ritch won national cham pionship followed Rony Barlevav Jim Allen R L Cranfill Dick Ritch Awards points given tenth place Racing started shortly after 900 am Sunday action picking up left off day before Gary Schmidt pushed Mike Del Ponte double cut round six put him down six points tighten things up quite bit Bob Nickle started Sunday off right putting what would fastest heat weekend 11745 round seven Randy Ritch Fred French fought lead against Doug White aker putting him down two points close races continued remainder day last round Spencer Wallace Jim Lime fought lead way finish line Spence turning 11910 Jims 11957 decision first place came down last heat day between Jim Allen Fred French Fred win would tied first Gary Schmidt have fly off result closest races either us ever Fred led first eight April 1991 153
Edition: Model Aviation - 1991/04
Page Numbers: 48, 49, 147, 148, 152, 153
The 1991 F3B team logo available pins patches T-shirts can ordered address given text US F3B team fundraising now full swing Soaring enthusiasts no doubt know United States has sent team F3B World Championships held other year since 1977 1991 World Champs will August Netherlands nearly 30 countries com peting Making up U S team top three fin ishers team selection finals held Denver last Labor DayLarry Jolly Daryl Perkins Joe Wurts Los Angeles area guys definitely world-class fliers believe have excellent shot winning World Champs team trophy something have never done Itll proud day American Sailplaners can pull off AMA pays entry fees transportation over seas living costs during contest team has substantial additional expense almost 48 Model Aviation Radio Confrol Soaring Byron Blakeslee 3134 N WInn*ago Dr Sdalla CO 80135 superlative quarter-scale DG-300 Jamie Carpenters Concord NH answer re alistic can get Jamie scratch-built everything Graupner spoilers instru ments H Designs pilot 8 1/2-lb Sailplane has molded fuselage foam core wings stab both balsa sheeted time RC Scale World Championships bold ID numbers fuse wing bottom Byrons -scale Roke ASK-la Vinyiwrite purchased good-flying ship Tony Arnoux imparts Miami years worth practice home week Europe just prior champs have traditionally supported team purchasing special logo souvenirs year Byron made vacuum pump wing bag ging old refrigerator compressor pump hss rope handles both ends Jamie Carpenters DG-300 aloft Eppier 27 long Building how-to text 214 airfoil gIves realistic flight speed Left Harley Michaeiiss latest Jouster won prestigious Northwest Soaring SocIetys 1990 Season Point Championship refined se quel Keetah its Harleys beat far terms structure performance handling Right Jouster has all-wood glassed-over fuselage all-foam-core wing unusually rigid fiat center section new type internal aileron driver called DADS tEA IN CONIRON J Losing control can night- modeling radio repair So avoid mare wrong response toa inflated repair costs undue given command can take its service time Radio South toll model fast economical inyour nerves e radio service wallet Radio South wejTI depend Radio know feel aboutElU h customer satisfaction hobby too areI] just motto Its avid RC enthusiasts way life nearly half century Let us put back control combined experienceincQj oil Free Order Line Orders Only Pleaserepair information 1-800-962-7802 5524 N Palafox Pensacola FL 32503 904 434-0909 pins patches T-shirts sale Prices $250 pin $300 patch $500 pinand-patch set $1200 T-shirt Dont get indicate T-shirt size Additional contribu tions team fund course welcome Please send order USA F3B Team Fund PO Box 3242 Lakewood CA 911703242 Team Manager Randy Spencer wrote say team practices going well Speed duration priority far dis tance practice begin soon team looking F3B events attend early part season help stay attuned pres sures actual contest conditions Randy also sent short biographical sketches of team members Im sure readers will interested learning about three magnificent fliers Larry Jolly started flying RC Sailplanes com petitively 1979 has won five Nats Sail plane competitions both Unlimited Stan dard classes Larry won first F3H World cross-country Sailplane championship held South Africa 1985 flying model own design member 1989 US F3B team placed 10th World champs held near Paris Larry known modelers LIMP kit manufacturing company produces line top Sailplane designs also recog nized activities movie world spe cial effects having built flown aircraft such films Die Hard Flight Intruder Miracle Landing Airwoif Larry Heli copter columnist Model Aviation con tributing columnist MAN magazine Daryl Perkins has flying Sailplanes since 1985 immediately drawn Slope Racing aspect sport because need speed quickly became premier fliers Slope Race circuit win ning 1988 1989 Hans Weiss Memorial Slope Race both classes 1989 Nats Slope Races club local races Drawing racing experience Daryl excels F3B speed distance tasks Joe Wurts design engineer working air craft conceptual design Lockheed Advanced Development company professional career training BS MS Aero EngineerBALSA WOOD 1/8iNcH3648 1/8 1/80912 BALSA WOOD1/6 3/161216 STICKS1/8 1/41418 1/8 3/817 22 1/16INcH3848 1/8 1/21826 1/16 1/16061/8 3/42635 1/163/3207 1/16 1/609 1/1603/1610 1/16 1/411 1/163/814 1/16 7 1/16 3/422 3/16iNcH3648 12 143/163/161416 16 3/16 1/41520 183/163/61722 213/16 127 303/16 3/43041 3/33INcH3648 I/4INcH3648 3/32 3/3208121/4 1/41722 3/32 1/810141/43/81927 3/323/1611161/4 1/22231 3/32 1/414171/4 445 3/323/61020 3/32 1/21722________ 3/32 533 Doobi BIa Wood Prce Sproce 004 8,wooo Slicks 5/16INcH3648 5/16 05/162329 5/16 3/62532 5/1601/23039 0/163/44256 3/8INcH3648 3/8 03/82940 3/8 01/23344 3/8 3/44764 I/3INcH3648 1/2 1/24052 1/23/45675 TRIANGULAR CUT BALSA 1/4 1/436 3/8 36 1/2 036 3/4 0 36 1 0 1 36 BALSA PLANKS 3/4336190 1236178 1336246 104036324 2236246 2336352 20436496 33o36524 3436728 27 31 40 50 65 BALSA SHEETS 1INcH3648 1/16 12939 3/32 3 1/8 13547 3/16 13952 1/4 0 14461 3/8 0 15777 1/2 0 17094 2iNcH3648 1/3223243 1/16023951 3/32 8 1/824964 3/16 7 1/426790 3/8282110 1/22121161 TAIBI 3iNcH3646 1/3234357 1/1634662 3/32 0 35675 1/836486 3/160377102 1/4390120 5/163110143 3/83128171 1/23161214 4INcH3648 1/3247093 1/19478108 3/32488117 /54 102 135 3/164 122 162 1/44 140 207 3/8 5 290 1/24 234 348 ing definite assets pursuit improved design construction techniques highperformance Sailplanes has flown competi tively since 1977 Nats placed sec ond first contest Through years has maintained diversi fied interest sport shown sampling accomplishments three-time winner International Slope Race winner first Mas ters Soaring contest winner 1989 Nats Hand-Launch event winner 20 consecutive cross-country events since 1983 course rec ords holder FAT certified World Record two National records declared dis tance 141 miles launch landing Joes wins accomplished planes own design using advanced composite construc tion methods Joe dedicated using knowl edge experience representing United States Soaring Holland Harleys latest design Sailplane enthusiasts name Harley can mean Harley Michaelis Walla Walla Hes designs pubContinued page 147 BIRCH PLY WOOD 1/84 12 12195 1/64 1224389 1/64 1248801 1/64048483204 1/481277 1/40120 12196 1/4012024314 1/4012048626 3/61212193 3/8 0 12 0 3/8 770 1/2 12 I2216 1/2 1224433 1/2 1248865 1/3261264 1/32 120 12127 1/320 1224257 1/320 1246506 1/1661283 1/160 /2 12125 1/16 1224250 1/16 1248500 3/3261297 3/321212194 3/320 12024387 3/32 1248774 1/8612107 1/80 12 12213 1/8 12 24425 TAPERED TRAILING 1/8 1248850 EDGE3648 3/16060 12791/80 1/22432 3/16 12 121063/16 3/43143 3/16 12243141/40 14258 3/16 12048626 5/16 11/44765 _________________ 3/80 1I/25677 * OPEN TO THE PUBLIC * LITE PLYWOOD 1/8121282 1/801224164 1/8 12048328 April 1991 49 Superior Aircraft Materials 12020-G Centralia iian Gardens California 90716 865-3220 Handling Charge S500 $375 COD mum Order $2000 plus UPS accept Personal checks COD fornia Residents add 68A Sales Tax pends suspect type aircraft question have no doubt lot experi mentation remains done Keith Shaw has demonstrated irrefutably sport Scale models fighter aircraft will fly very well aerobatic perform ance excess full Scale capability may same subjects built com petitive levels Scale fidelity atten dant higher wing loadings will comfort ably capable Scale flight maneuvers seems door open right now lot highly competitive Electric pow ered Scale airplanes make appear ance responding advertisers mention read about Model Aviation Soaring/Blakeslee Continued page 49 lished model magazines always seems think up better ways doing things No disre spect insurance agents Harley missed true callinghe should have aeronautical design engineer Harley sends us info lat est Enclosed some photos Open class Jouster refined sequel previous designsthe Atrix December 1986 MA Keetab June 1989 RCM Span 120 area 1038 sq all-up weight 60 70 oz de pending balsa grade radio gear used best far terms structure performance handlingthe bastion popular line kit Gliders flew 1990 sea son championships Northwest Soaring Society Others have used much-touted designs laud comparative performance handling Jouster-type airframes Jouster has all-foam-core wing un usually rigid flat center section has 3/8-in balsa vertical webs set between top bottom spars made up strips l/ ply cut 3A wide carbon fiber epoxy laminate between Sturdy receptacles receive spring steel support blades extending tip sections Tips lock simple mechanism couples aileron hardware Featured new type aileron driver thats easy make call DADS Direct Ail eron Drivers bind-free slop-free light sim ple totally internal no bellcrank ex ternal clevis threaded rod horn exit guide April 1991 147 Made America ILW American Technology RJL Manufactures USA RJL RIC & U/C ENGiNES 15 thru 61 Forster Glow & Ignition Engines ACTORY PARTS & SERVICE FOR HB Engines Cox Conquest 15 Kraft 61 Taipan AC HGK Engines Testor/McCoy Series 21 Forster Remco Viking twin Cot write free information RJL Industries P0 Box 5 Sierra Macire CA 91025 818 359-0016 S D A monthly publication covering International RC Soaring Scene mUSk $19 yr$261yrlstClsss CanadmilexIco $261yr US funds Asia & Pacific $421yr US funds Eun2pe & UK $3Wyr US fund Surface MaN ForsIgn 221yr US funds R/C SOARING DIGEST PO Box 6680 Concord CA 94524 LET US BUILD YOUR NEXT R/C AIR CRAFT WE WILL BUILD ANY AIR CRAFT INLUDING GIANT SCALE IN THE BONES OR READY TO FLY PROMPT DELIVERY NO DEPOSIT REQUIRED BYRON KITS WELCOME BUILT TO FLY CALL FOR PRICE QUOTE FRANK V PONTERI MODEL AIRCRAFT CO 609 391-1855 last time really enjayed building kit Stinson high quality hand cut kit lots vacuformed extras piece detailed Fiberglass Cowl Wire parts pre-bent complete hardware package included Kit requires 5 servos 7 flaps Wing Span 74 Wt 8-9 lbs Engine Sizes 60-120T FS 60-90 TS Plug Wing Panel easy transporting Go ahead Spoil Yourself Deserve ltl $15900 Postage & Handling Color Catalog nine other quality kits $300 info write Call 517-781-3000 Fax 517-781-4322 AERODROME MODELS LTD S Miller Rd naw Ml 48603 Servos center-clustered including wing helps preserve good roll response avoids long leads needed servos placed outboard Hidden A-in nylon bolts firmly secure wing After trying several newer airfoils Ive set tIed 5D7032 used has particularly pleasing handling thermaling characteristics wide speed range its thick enough typically used chords fully recess pop ular smaller servos Incidentally SD7037 wind tunnel model tested Princeton built model want known its polars en hanced paper-thin trailing edge would impractical field use Hence claims about its alleged superiority over 5D7032 S302 1 might taken grain salt Jousters curvaceous sturdy fuselage wood fin made light balsa glassed over painted rudder stab simple lightweight built-up structures Inte gral aluminum sharks teeth fit slot nose quick braldng needed wing placement light tail feathers balance generally attained using 800-mAh pack out additional lead fuselage profile retains pronounced droop snoot Ia Keetah keeps flaps off turf landing droop lowers centerof-gravity stabilizing pendulum effect avoids exasperating last-second belly rota tions ruin landings use both Airtronics Vision Ace Mi croPro radios functions needed op timize performance friend handles ship very well however using four-channel radio three-way Y-hamess runs rudder two aileron servos plugged aileron channel just pushes elevator stick ward needed pitch compensation down flap throttle stick Flaps reflexed speed throttle trim tab Jouster eliminates need spend fortune get fine performance cost materials wood adhesives hardware covering etc about $100 counting cores friend Harry Smith modelers modeler can provide dandy pink foam cores $35 including shipping address 814 Home Walla Walla WA 99362 Anyone interested Jouster might get Kee tah plans #1045 @ $1150 RC Modeler magazine have $12 package make Jouster includes complete new construc tion text detail sheets DADS fabrication spring steel bars fiberglass canopy latter eliminates need make male plug female mold canopy Im 26 5 Roosevelt Walla Walla WA 99362 telephone 509/5292562 Heres brief deseription Harley Michaelis DADS setup Picture three-inch-long 3A2 music wire MW shafts installed fore aft main part wing forward ailerons shafts ex tend inch beyond wings bent 45 0 angle same plane wing bent portions fit snug slots aileron front ends shafts bent 900 driven aileron pushrods As shafts rotate 450 bent wires move up down drive ai lerons Ingenious Vinylwrite Custom Lettering finish quarter-scale Roke ASK-18 needed ID num bers both sides fuselage bot tom left wing fuse numbers 25 high wing 6 high wasnt about attempt painting saw ad Vi nylwrite RC Soaring Digest sent off photo full-size ASK-iS copying ask ing what could Owner Art Morgen quick ly responded few samples suggested type style close what needed said Go self-sticking custom letters ber ries As received very thin 2-mil vinyl graphics properly spaced captured tween top bottom sheets peel off bot tom sheet place numbers whatever model rub down remove top sheet Thats process simple fast gives beautiful-looking lettering Art offers sizes shapes colors etc best bet write call information packet Vinylwrite 16043 Tulsa St Granada Hills CA 91344 telephone 818/363-7131 Seale Soaring Jamie Carpenter Concord NC kind enough send some photos beau tiful DG-300 following letter July 1990 issue MA showed picture Bill Wynans A-scale ASW 20 asked realistic can get Well after four years off-and-on work 600 hours design construction swer question Sailplane quarterscale DG-300 molded fuselage foam core wings stabilizer both balsa sheet ing parts plane did scratch-build Graupner spoilers struments H Designs pilot ship weighs 85 lb uses Eppler 214 airfoil Continued page 152 148 Model Aviation Stinson 108 T-50 uc7a CESSNSCAT QUAL Made 0 White Laminating Epoxy & Fiberglass Strong Lightweight No Pin Holes tle e Construction dor Fly McDaniel Power New Solid State On-Board Glow-Plug Drivers Now can drive 1 2 glow plugs efficiently automatically new McDaniel On-Board Glow-Plug Drivers engine 2 4 stroke glow has 1 2 cylinders Model 471 472 On-Board Glow-Plug Driver will ease jobs starting maintaining idle during taxiing power down ffight maneuvers FEATURES INCLUDE Servo Reversing Optically Coupled Circuitry No RH Automatic Shutdown Via TX RX Connector Plug Battery Pack Remote Glow Plug Indicator Panels Available Separately Battery Pack AC Charger NOT Included Available Separately See Local Hobby Dealer Contact McDaniel R/C Inc 1654 Crofton Blvd Suite 4 Crofton MD 21114 Soari ng/Blakeslee Continued page 147 gives very realistic flight speed would thrilled included picture column look forward seeing Scale projects featured Making own vacuwn pump Last months column contained Frank Westons article vacuum-bagging wings Franks remark about ing able make vacuum pump zero cost done right piqued inter#st seemed like challenge something akin scav enger hunt started visiting friend Ron Watts Colorado Springs Ron bag ging wings Pikes Peak SS guys told hed made pump refrigerator com pressor review refrigerator works com pressor increases pressure circulates refriger ant through condenser expansion valve evaporator take just compressor hook up hose inlet side exhaust outlet side have vacuum pump Recall per fect vacuum atmospheric pressure about 299 inches mercury 147 pounds per square Visa MC accepted Phone 301721-6303 301721-6306 inch sea level Ron used old GE refrigerator compressor got brothers appliance store California pulls about 22 inches steadily spits oil Out exhaust Apparently oil circu lates refrigerant lubricate compres sor Ron has exhaust pipe connected small tank serves oil separator Once opens valve lets oil drain back compressors oil reservoir Rons pump has homemade electronic vac uum regulator uses now-unavailable micro processor chip 30-lb Freon tank used reservoir tanks nonrefillable refrigeration shops throw away tip Julian Tamez excellent videotape Vacuum-Bag See Frank Westons ar ticle Channel 1 listing last months col umn Figuring Id let fingers walking got out Denver yellow pages combed through Refrigerator Repair listings Drew blank tried Appliance Repair found few places would sell used compressors around $50 New ones $150 up wasnt simple Frank implied Next Used Appliances section Pay dirt response query about junk refriger ators kind gentleman named Al said Yeah got dozen out back ing dump ke what want Once down excellent emporium located less savory section town discreetly asked Al junkers worked pointed Frigidaire said knew com pressor ran decided recondition refrigerator because too old So thats compressors scarce realized Used appliance dealers salvage good compressors re pair refrigerators have conked out Since knew zilch about business tried get quick course Al Seems loss re frigerant burned-out motors common faults Al added valves go wont pump over six inches vacuum Needs over 20 inches run fridge Before operate junk refrigerator choice refrigerant Freon similar gas should safely evacuated can hacksaw off inlet outlet pipes saving much possible Make sure get nec essary electrical partsnamely starting relay capacitor control thermostat inside cold space will wired relay isnt needed peculiarity Frigidaire com pressor rubber mounted between hefty steel bottom crossmember lower part cold-space sheet metal remove compres sor unbolt crossmember frame also noticed compressor ra diator piped up turned out oil cooler no external oil reservoir Rons GE Attached near inlet com pressor little cylinder about four inches long two inches diameter Al said filter decided Id better take crossmember along well length 4-in copper tubing hooked up icemaker Once home problem assemble everything compact pump possible Rons GE compressor four mounting feet made bolting wood base simple job crazy Frigidaire single rubber-clad posts top bottom wouldnt stand up itself Plus oil cooler stuck out 14 inches best course appeared to make use bottom mount crossmember Luckily compressor sitting bottom mount oil cooler just fit within length crossmember So crossmember would nicely base pump wire hoop could hold compressor base Freon tank could fit above cooler making piping runs short starting relay on/off switch would fit other side compressor next step obtaining other necessary parts especially vacuum regulator switch bit Serious Helicopter Hot Dogging PISTON/CYLINDER AbSEMBLIES Superior Horsepower wI Tuned Pipes True ABC Construction Finest Materials & Workmanship Arch Port Available OS SFN-RFN Other Types & Sizes Available Pattern Racing Send $100 complete Catalogue Engines Accessories PERFORMANCE SPECIALTIES 619-729-1658 PO Box 4003 Carlsbad CA 92008 152 Model Aviation asking around produced name Tom Overton member South Bay club Tom sells good subminiature adjustable switch $30 plus $2 S&H address 1302 Arleen Ave Sunnyvale CA 94007 bought vacuum gauge Grainger mechanical supply house $8 neighbor commercial re frigeration business gave both 30- 50pound Freon tanks bigger would efficient 30-pounder fit better piping retrospect Id recommend using A-ID vinyl tubing plastic tees Xs much possible theyre cheap produce good seal used A-in copper tubing icemaker three brass compression tees about $2 hardware store vac uum gauge switch could piped solidly tank thus freestanding use vinyl tubing brass pipe-threads-to-tubing adapters about $1 still required gauge switch Also parts would need mounted some sort panel valve Freon bottle has A-in cop per flare fitting dont have flaring tool ask folks purchase com pressor theyll flare end short piece copper along donating Freon tanknothing like making pest yourselr next obstacle what looked like inlet filter compressor stuck out too far Best cut off knew would danger ous because wasnt space use tubing cut ter hacksaw would make copper filings might later get sucked compressor Off went anyway already mess drilling out 5/ copper inlet pipe accept A-in copper couldnt hurt much shop vac wouldnt get filings Out inlet used small cotton swabs end tweezers carefully clean short length A-in copper soldered vinyl tubing could used connect pump rest plumbing Incidentally nothing inside filterlike part dont know what knowledgeable about refrigerator com pressors would care tell us about Id grateful letter electrical side Frigidaire straightforward Three wires go starting relay motor Al said extra wire includes capacitor starting winding cut 110-volt power cord added on/off switch obtained junk box Two wires connected vacuum switch replace thermostat wires controlling start ing relay caution note relay said Must mounted vertically Fine remained clamp vacuum hose would normally go bag plug power cord flip switch worked vacuum quickly built up max 23 inches played vacuum switch finally adjusting 15 incheswhich means pump goes off 15 comes 13 inches mercury supposed good vacuum extruded foams white bead-board lower gauge stayed quite constant pump off indicating vacuum wasnt leaking back through compressor piping con nections tight fact after pump shut off overnight still six inches vacuum next morning compressor runs very quietly no oil comes out ex haust Evidently doesnt need separator Rons does Some baggers use refrigerator compressors say shot compressor oil let time time good idea Thats other thing need learn about havent chance use pump bag ging yet Im sure will work okay Total inThkeA Load Off needs carry around deadweight Sullivan Skylite Its lightest conventional style wheel can buy Engineered unique foam core thin tough rubber skin Skylite cuts weight conventional wheel about half So can take off easier fly longer maneuver better Whats Skylites rugged build es re eated take- offs landings bit well its heftiest competitors never fails spring back round atter long model sits runway workbench So youve thinking about takingCsjJJii off weight talk dealer about seeingPRODUJIS light Skylite isPO Box 5166 Baltimore MD 21224 Getting Better Ideas Off Ground vestment about $56 mostly vacuum switch question long old pump like will last would costly ex tremely annoying fall $50 worth foam core carbon fiber glass cloth wet epoxy inside bag RC Pylon Racing/Hager Continued page 56 equipment racing ended after fifth round repairs made before racing would resume Sunday morning Saturday night food catered field stayed around presentation National Points Trophies Randy Ritch won national cham pionship followed Rony Barlevav Jim Allen R L Cranfill Dick Ritch Awards points given tenth place Racing started shortly after 900 am Sunday action picking up left off day before Gary Schmidt pushed Mike Del Ponte double cut round six put him down six points tighten things up quite bit Bob Nickle started Sunday off right putting what would fastest heat weekend 11745 round seven Randy Ritch Fred French fought lead against Doug White aker putting him down two points close races continued remainder day last round Spencer Wallace Jim Lime fought lead way finish line Spence turning 11910 Jims 11957 decision first place came down last heat day between Jim Allen Fred French Fred win would tied first Gary Schmidt have fly off result closest races either us ever Fred led first eight April 1991 153
Edition: Model Aviation - 1991/04
Page Numbers: 48, 49, 147, 148, 152, 153
The 1991 F3B team logo available pins patches T-shirts can ordered address given text US F3B team fundraising now full swing Soaring enthusiasts no doubt know United States has sent team F3B World Championships held other year since 1977 1991 World Champs will August Netherlands nearly 30 countries com peting Making up U S team top three fin ishers team selection finals held Denver last Labor DayLarry Jolly Daryl Perkins Joe Wurts Los Angeles area guys definitely world-class fliers believe have excellent shot winning World Champs team trophy something have never done Itll proud day American Sailplaners can pull off AMA pays entry fees transportation over seas living costs during contest team has substantial additional expense almost 48 Model Aviation Radio Confrol Soaring Byron Blakeslee 3134 N WInn*ago Dr Sdalla CO 80135 superlative quarter-scale DG-300 Jamie Carpenters Concord NH answer re alistic can get Jamie scratch-built everything Graupner spoilers instru ments H Designs pilot 8 1/2-lb Sailplane has molded fuselage foam core wings stab both balsa sheeted time RC Scale World Championships bold ID numbers fuse wing bottom Byrons -scale Roke ASK-la Vinyiwrite purchased good-flying ship Tony Arnoux imparts Miami years worth practice home week Europe just prior champs have traditionally supported team purchasing special logo souvenirs year Byron made vacuum pump wing bag ging old refrigerator compressor pump hss rope handles both ends Jamie Carpenters DG-300 aloft Eppier 27 long Building how-to text 214 airfoil gIves realistic flight speed Left Harley Michaeiiss latest Jouster won prestigious Northwest Soaring SocIetys 1990 Season Point Championship refined se quel Keetah its Harleys beat far terms structure performance handling Right Jouster has all-wood glassed-over fuselage all-foam-core wing unusually rigid fiat center section new type internal aileron driver called DADS tEA IN CONIRON J Losing control can night- modeling radio repair So avoid mare wrong response toa inflated repair costs undue given command can take its service time Radio South toll model fast economical inyour nerves e radio service wallet Radio South wejTI depend Radio know feel aboutElU h customer satisfaction hobby too areI] just motto Its avid RC enthusiasts way life nearly half century Let us put back control combined experienceincQj oil Free Order Line Orders Only Pleaserepair information 1-800-962-7802 5524 N Palafox Pensacola FL 32503 904 434-0909 pins patches T-shirts sale Prices $250 pin $300 patch $500 pinand-patch set $1200 T-shirt Dont get indicate T-shirt size Additional contribu tions team fund course welcome Please send order USA F3B Team Fund PO Box 3242 Lakewood CA 911703242 Team Manager Randy Spencer wrote say team practices going well Speed duration priority far dis tance practice begin soon team looking F3B events attend early part season help stay attuned pres sures actual contest conditions Randy also sent short biographical sketches of team members Im sure readers will interested learning about three magnificent fliers Larry Jolly started flying RC Sailplanes com petitively 1979 has won five Nats Sail plane competitions both Unlimited Stan dard classes Larry won first F3H World cross-country Sailplane championship held South Africa 1985 flying model own design member 1989 US F3B team placed 10th World champs held near Paris Larry known modelers LIMP kit manufacturing company produces line top Sailplane designs also recog nized activities movie world spe cial effects having built flown aircraft such films Die Hard Flight Intruder Miracle Landing Airwoif Larry Heli copter columnist Model Aviation con tributing columnist MAN magazine Daryl Perkins has flying Sailplanes since 1985 immediately drawn Slope Racing aspect sport because need speed quickly became premier fliers Slope Race circuit win ning 1988 1989 Hans Weiss Memorial Slope Race both classes 1989 Nats Slope Races club local races Drawing racing experience Daryl excels F3B speed distance tasks Joe Wurts design engineer working air craft conceptual design Lockheed Advanced Development company professional career training BS MS Aero EngineerBALSA WOOD 1/8iNcH3648 1/8 1/80912 BALSA WOOD1/6 3/161216 STICKS1/8 1/41418 1/8 3/817 22 1/16INcH3848 1/8 1/21826 1/16 1/16061/8 3/42635 1/163/3207 1/16 1/609 1/1603/1610 1/16 1/411 1/163/814 1/16 7 1/16 3/422 3/16iNcH3648 12 143/163/161416 16 3/16 1/41520 183/163/61722 213/16 127 303/16 3/43041 3/33INcH3648 I/4INcH3648 3/32 3/3208121/4 1/41722 3/32 1/810141/43/81927 3/323/1611161/4 1/22231 3/32 1/414171/4 445 3/323/61020 3/32 1/21722________ 3/32 533 Doobi BIa Wood Prce Sproce 004 8,wooo Slicks 5/16INcH3648 5/16 05/162329 5/16 3/62532 5/1601/23039 0/163/44256 3/8INcH3648 3/8 03/82940 3/8 01/23344 3/8 3/44764 I/3INcH3648 1/2 1/24052 1/23/45675 TRIANGULAR CUT BALSA 1/4 1/436 3/8 36 1/2 036 3/4 0 36 1 0 1 36 BALSA PLANKS 3/4336190 1236178 1336246 104036324 2236246 2336352 20436496 33o36524 3436728 27 31 40 50 65 BALSA SHEETS 1INcH3648 1/16 12939 3/32 3 1/8 13547 3/16 13952 1/4 0 14461 3/8 0 15777 1/2 0 17094 2iNcH3648 1/3223243 1/16023951 3/32 8 1/824964 3/16 7 1/426790 3/8282110 1/22121161 TAIBI 3iNcH3646 1/3234357 1/1634662 3/32 0 35675 1/836486 3/160377102 1/4390120 5/163110143 3/83128171 1/23161214 4INcH3648 1/3247093 1/19478108 3/32488117 /54 102 135 3/164 122 162 1/44 140 207 3/8 5 290 1/24 234 348 ing definite assets pursuit improved design construction techniques highperformance Sailplanes has flown competi tively since 1977 Nats placed sec ond first contest Through years has maintained diversi fied interest sport shown sampling accomplishments three-time winner International Slope Race winner first Mas ters Soaring contest winner 1989 Nats Hand-Launch event winner 20 consecutive cross-country events since 1983 course rec ords holder FAT certified World Record two National records declared dis tance 141 miles launch landing Joes wins accomplished planes own design using advanced composite construc tion methods Joe dedicated using knowl edge experience representing United States Soaring Holland Harleys latest design Sailplane enthusiasts name Harley can mean Harley Michaelis Walla Walla Hes designs pubContinued page 147 BIRCH PLY WOOD 1/84 12 12195 1/64 1224389 1/64 1248801 1/64048483204 1/481277 1/40120 12196 1/4012024314 1/4012048626 3/61212193 3/8 0 12 0 3/8 770 1/2 12 I2216 1/2 1224433 1/2 1248865 1/3261264 1/32 120 12127 1/320 1224257 1/320 1246506 1/1661283 1/160 /2 12125 1/16 1224250 1/16 1248500 3/3261297 3/321212194 3/320 12024387 3/32 1248774 1/8612107 1/80 12 12213 1/8 12 24425 TAPERED TRAILING 1/8 1248850 EDGE3648 3/16060 12791/80 1/22432 3/16 12 121063/16 3/43143 3/16 12243141/40 14258 3/16 12048626 5/16 11/44765 _________________ 3/80 1I/25677 * OPEN TO THE PUBLIC * LITE PLYWOOD 1/8121282 1/801224164 1/8 12048328 April 1991 49 Superior Aircraft Materials 12020-G Centralia iian Gardens California 90716 865-3220 Handling Charge S500 $375 COD mum Order $2000 plus UPS accept Personal checks COD fornia Residents add 68A Sales Tax pends suspect type aircraft question have no doubt lot experi mentation remains done Keith Shaw has demonstrated irrefutably sport Scale models fighter aircraft will fly very well aerobatic perform ance excess full Scale capability may same subjects built com petitive levels Scale fidelity atten dant higher wing loadings will comfort ably capable Scale flight maneuvers seems door open right now lot highly competitive Electric pow ered Scale airplanes make appear ance responding advertisers mention read about Model Aviation Soaring/Blakeslee Continued page 49 lished model magazines always seems think up better ways doing things No disre spect insurance agents Harley missed true callinghe should have aeronautical design engineer Harley sends us info lat est Enclosed some photos Open class Jouster refined sequel previous designsthe Atrix December 1986 MA Keetab June 1989 RCM Span 120 area 1038 sq all-up weight 60 70 oz de pending balsa grade radio gear used best far terms structure performance handlingthe bastion popular line kit Gliders flew 1990 sea son championships Northwest Soaring Society Others have used much-touted designs laud comparative performance handling Jouster-type airframes Jouster has all-foam-core wing un usually rigid flat center section has 3/8-in balsa vertical webs set between top bottom spars made up strips l/ ply cut 3A wide carbon fiber epoxy laminate between Sturdy receptacles receive spring steel support blades extending tip sections Tips lock simple mechanism couples aileron hardware Featured new type aileron driver thats easy make call DADS Direct Ail eron Drivers bind-free slop-free light sim ple totally internal no bellcrank ex ternal clevis threaded rod horn exit guide April 1991 147 Made America ILW American Technology RJL Manufactures USA RJL RIC & U/C ENGiNES 15 thru 61 Forster Glow & Ignition Engines ACTORY PARTS & SERVICE FOR HB Engines Cox Conquest 15 Kraft 61 Taipan AC HGK Engines Testor/McCoy Series 21 Forster Remco Viking twin Cot write free information RJL Industries P0 Box 5 Sierra Macire CA 91025 818 359-0016 S D A monthly publication covering International RC Soaring Scene mUSk $19 yr$261yrlstClsss CanadmilexIco $261yr US funds Asia & Pacific $421yr US funds Eun2pe & UK $3Wyr US fund Surface MaN ForsIgn 221yr US funds R/C SOARING DIGEST PO Box 6680 Concord CA 94524 LET US BUILD YOUR NEXT R/C AIR CRAFT WE WILL BUILD ANY AIR CRAFT INLUDING GIANT SCALE IN THE BONES OR READY TO FLY PROMPT DELIVERY NO DEPOSIT REQUIRED BYRON KITS WELCOME BUILT TO FLY CALL FOR PRICE QUOTE FRANK V PONTERI MODEL AIRCRAFT CO 609 391-1855 last time really enjayed building kit Stinson high quality hand cut kit lots vacuformed extras piece detailed Fiberglass Cowl Wire parts pre-bent complete hardware package included Kit requires 5 servos 7 flaps Wing Span 74 Wt 8-9 lbs Engine Sizes 60-120T FS 60-90 TS Plug Wing Panel easy transporting Go ahead Spoil Yourself Deserve ltl $15900 Postage & Handling Color Catalog nine other quality kits $300 info write Call 517-781-3000 Fax 517-781-4322 AERODROME MODELS LTD S Miller Rd naw Ml 48603 Servos center-clustered including wing helps preserve good roll response avoids long leads needed servos placed outboard Hidden A-in nylon bolts firmly secure wing After trying several newer airfoils Ive set tIed 5D7032 used has particularly pleasing handling thermaling characteristics wide speed range its thick enough typically used chords fully recess pop ular smaller servos Incidentally SD7037 wind tunnel model tested Princeton built model want known its polars en hanced paper-thin trailing edge would impractical field use Hence claims about its alleged superiority over 5D7032 S302 1 might taken grain salt Jousters curvaceous sturdy fuselage wood fin made light balsa glassed over painted rudder stab simple lightweight built-up structures Inte gral aluminum sharks teeth fit slot nose quick braldng needed wing placement light tail feathers balance generally attained using 800-mAh pack out additional lead fuselage profile retains pronounced droop snoot Ia Keetah keeps flaps off turf landing droop lowers centerof-gravity stabilizing pendulum effect avoids exasperating last-second belly rota tions ruin landings use both Airtronics Vision Ace Mi croPro radios functions needed op timize performance friend handles ship very well however using four-channel radio three-way Y-hamess runs rudder two aileron servos plugged aileron channel just pushes elevator stick ward needed pitch compensation down flap throttle stick Flaps reflexed speed throttle trim tab Jouster eliminates need spend fortune get fine performance cost materials wood adhesives hardware covering etc about $100 counting cores friend Harry Smith modelers modeler can provide dandy pink foam cores $35 including shipping address 814 Home Walla Walla WA 99362 Anyone interested Jouster might get Kee tah plans #1045 @ $1150 RC Modeler magazine have $12 package make Jouster includes complete new construc tion text detail sheets DADS fabrication spring steel bars fiberglass canopy latter eliminates need make male plug female mold canopy Im 26 5 Roosevelt Walla Walla WA 99362 telephone 509/5292562 Heres brief deseription Harley Michaelis DADS setup Picture three-inch-long 3A2 music wire MW shafts installed fore aft main part wing forward ailerons shafts ex tend inch beyond wings bent 45 0 angle same plane wing bent portions fit snug slots aileron front ends shafts bent 900 driven aileron pushrods As shafts rotate 450 bent wires move up down drive ai lerons Ingenious Vinylwrite Custom Lettering finish quarter-scale Roke ASK-18 needed ID num bers both sides fuselage bot tom left wing fuse numbers 25 high wing 6 high wasnt about attempt painting saw ad Vi nylwrite RC Soaring Digest sent off photo full-size ASK-iS copying ask ing what could Owner Art Morgen quick ly responded few samples suggested type style close what needed said Go self-sticking custom letters ber ries As received very thin 2-mil vinyl graphics properly spaced captured tween top bottom sheets peel off bot tom sheet place numbers whatever model rub down remove top sheet Thats process simple fast gives beautiful-looking lettering Art offers sizes shapes colors etc best bet write call information packet Vinylwrite 16043 Tulsa St Granada Hills CA 91344 telephone 818/363-7131 Seale Soaring Jamie Carpenter Concord NC kind enough send some photos beau tiful DG-300 following letter July 1990 issue MA showed picture Bill Wynans A-scale ASW 20 asked realistic can get Well after four years off-and-on work 600 hours design construction swer question Sailplane quarterscale DG-300 molded fuselage foam core wings stabilizer both balsa sheet ing parts plane did scratch-build Graupner spoilers struments H Designs pilot ship weighs 85 lb uses Eppler 214 airfoil Continued page 152 148 Model Aviation Stinson 108 T-50 uc7a CESSNSCAT QUAL Made 0 White Laminating Epoxy & Fiberglass Strong Lightweight No Pin Holes tle e Construction dor Fly McDaniel Power New Solid State On-Board Glow-Plug Drivers Now can drive 1 2 glow plugs efficiently automatically new McDaniel On-Board Glow-Plug Drivers engine 2 4 stroke glow has 1 2 cylinders Model 471 472 On-Board Glow-Plug Driver will ease jobs starting maintaining idle during taxiing power down ffight maneuvers FEATURES INCLUDE Servo Reversing Optically Coupled Circuitry No RH Automatic Shutdown Via TX RX Connector Plug Battery Pack Remote Glow Plug Indicator Panels Available Separately Battery Pack AC Charger NOT Included Available Separately See Local Hobby Dealer Contact McDaniel R/C Inc 1654 Crofton Blvd Suite 4 Crofton MD 21114 Soari ng/Blakeslee Continued page 147 gives very realistic flight speed would thrilled included picture column look forward seeing Scale projects featured Making own vacuwn pump Last months column contained Frank Westons article vacuum-bagging wings Franks remark about ing able make vacuum pump zero cost done right piqued inter#st seemed like challenge something akin scav enger hunt started visiting friend Ron Watts Colorado Springs Ron bag ging wings Pikes Peak SS guys told hed made pump refrigerator com pressor review refrigerator works com pressor increases pressure circulates refriger ant through condenser expansion valve evaporator take just compressor hook up hose inlet side exhaust outlet side have vacuum pump Recall per fect vacuum atmospheric pressure about 299 inches mercury 147 pounds per square Visa MC accepted Phone 301721-6303 301721-6306 inch sea level Ron used old GE refrigerator compressor got brothers appliance store California pulls about 22 inches steadily spits oil Out exhaust Apparently oil circu lates refrigerant lubricate compres sor Ron has exhaust pipe connected small tank serves oil separator Once opens valve lets oil drain back compressors oil reservoir Rons pump has homemade electronic vac uum regulator uses now-unavailable micro processor chip 30-lb Freon tank used reservoir tanks nonrefillable refrigeration shops throw away tip Julian Tamez excellent videotape Vacuum-Bag See Frank Westons ar ticle Channel 1 listing last months col umn Figuring Id let fingers walking got out Denver yellow pages combed through Refrigerator Repair listings Drew blank tried Appliance Repair found few places would sell used compressors around $50 New ones $150 up wasnt simple Frank implied Next Used Appliances section Pay dirt response query about junk refriger ators kind gentleman named Al said Yeah got dozen out back ing dump ke what want Once down excellent emporium located less savory section town discreetly asked Al junkers worked pointed Frigidaire said knew com pressor ran decided recondition refrigerator because too old So thats compressors scarce realized Used appliance dealers salvage good compressors re pair refrigerators have conked out Since knew zilch about business tried get quick course Al Seems loss re frigerant burned-out motors common faults Al added valves go wont pump over six inches vacuum Needs over 20 inches run fridge Before operate junk refrigerator choice refrigerant Freon similar gas should safely evacuated can hacksaw off inlet outlet pipes saving much possible Make sure get nec essary electrical partsnamely starting relay capacitor control thermostat inside cold space will wired relay isnt needed peculiarity Frigidaire com pressor rubber mounted between hefty steel bottom crossmember lower part cold-space sheet metal remove compres sor unbolt crossmember frame also noticed compressor ra diator piped up turned out oil cooler no external oil reservoir Rons GE Attached near inlet com pressor little cylinder about four inches long two inches diameter Al said filter decided Id better take crossmember along well length 4-in copper tubing hooked up icemaker Once home problem assemble everything compact pump possible Rons GE compressor four mounting feet made bolting wood base simple job crazy Frigidaire single rubber-clad posts top bottom wouldnt stand up itself Plus oil cooler stuck out 14 inches best course appeared to make use bottom mount crossmember Luckily compressor sitting bottom mount oil cooler just fit within length crossmember So crossmember would nicely base pump wire hoop could hold compressor base Freon tank could fit above cooler making piping runs short starting relay on/off switch would fit other side compressor next step obtaining other necessary parts especially vacuum regulator switch bit Serious Helicopter Hot Dogging PISTON/CYLINDER AbSEMBLIES Superior Horsepower wI Tuned Pipes True ABC Construction Finest Materials & Workmanship Arch Port Available OS SFN-RFN Other Types & Sizes Available Pattern Racing Send $100 complete Catalogue Engines Accessories PERFORMANCE SPECIALTIES 619-729-1658 PO Box 4003 Carlsbad CA 92008 152 Model Aviation asking around produced name Tom Overton member South Bay club Tom sells good subminiature adjustable switch $30 plus $2 S&H address 1302 Arleen Ave Sunnyvale CA 94007 bought vacuum gauge Grainger mechanical supply house $8 neighbor commercial re frigeration business gave both 30- 50pound Freon tanks bigger would efficient 30-pounder fit better piping retrospect Id recommend using A-ID vinyl tubing plastic tees Xs much possible theyre cheap produce good seal used A-in copper tubing icemaker three brass compression tees about $2 hardware store vac uum gauge switch could piped solidly tank thus freestanding use vinyl tubing brass pipe-threads-to-tubing adapters about $1 still required gauge switch Also parts would need mounted some sort panel valve Freon bottle has A-in cop per flare fitting dont have flaring tool ask folks purchase com pressor theyll flare end short piece copper along donating Freon tanknothing like making pest yourselr next obstacle what looked like inlet filter compressor stuck out too far Best cut off knew would danger ous because wasnt space use tubing cut ter hacksaw would make copper filings might later get sucked compressor Off went anyway already mess drilling out 5/ copper inlet pipe accept A-in copper couldnt hurt much shop vac wouldnt get filings Out inlet used small cotton swabs end tweezers carefully clean short length A-in copper soldered vinyl tubing could used connect pump rest plumbing Incidentally nothing inside filterlike part dont know what knowledgeable about refrigerator com pressors would care tell us about Id grateful letter electrical side Frigidaire straightforward Three wires go starting relay motor Al said extra wire includes capacitor starting winding cut 110-volt power cord added on/off switch obtained junk box Two wires connected vacuum switch replace thermostat wires controlling start ing relay caution note relay said Must mounted vertically Fine remained clamp vacuum hose would normally go bag plug power cord flip switch worked vacuum quickly built up max 23 inches played vacuum switch finally adjusting 15 incheswhich means pump goes off 15 comes 13 inches mercury supposed good vacuum extruded foams white bead-board lower gauge stayed quite constant pump off indicating vacuum wasnt leaking back through compressor piping con nections tight fact after pump shut off overnight still six inches vacuum next morning compressor runs very quietly no oil comes out ex haust Evidently doesnt need separator Rons does Some baggers use refrigerator compressors say shot compressor oil let time time good idea Thats other thing need learn about havent chance use pump bag ging yet Im sure will work okay Total inThkeA Load Off needs carry around deadweight Sullivan Skylite Its lightest conventional style wheel can buy Engineered unique foam core thin tough rubber skin Skylite cuts weight conventional wheel about half So can take off easier fly longer maneuver better Whats Skylites rugged build es re eated take- offs landings bit well its heftiest competitors never fails spring back round atter long model sits runway workbench So youve thinking about takingCsjJJii off weight talk dealer about seeingPRODUJIS light Skylite isPO Box 5166 Baltimore MD 21224 Getting Better Ideas Off Ground vestment about $56 mostly vacuum switch question long old pump like will last would costly ex tremely annoying fall $50 worth foam core carbon fiber glass cloth wet epoxy inside bag RC Pylon Racing/Hager Continued page 56 equipment racing ended after fifth round repairs made before racing would resume Sunday morning Saturday night food catered field stayed around presentation National Points Trophies Randy Ritch won national cham pionship followed Rony Barlevav Jim Allen R L Cranfill Dick Ritch Awards points given tenth place Racing started shortly after 900 am Sunday action picking up left off day before Gary Schmidt pushed Mike Del Ponte double cut round six put him down six points tighten things up quite bit Bob Nickle started Sunday off right putting what would fastest heat weekend 11745 round seven Randy Ritch Fred French fought lead against Doug White aker putting him down two points close races continued remainder day last round Spencer Wallace Jim Lime fought lead way finish line Spence turning 11910 Jims 11957 decision first place came down last heat day between Jim Allen Fred French Fred win would tied first Gary Schmidt have fly off result closest races either us ever Fred led first eight April 1991 153
Edition: Model Aviation - 1991/04
Page Numbers: 48, 49, 147, 148, 152, 153
The 1991 F3B team logo available pins patches T-shirts can ordered address given text US F3B team fundraising now full swing Soaring enthusiasts no doubt know United States has sent team F3B World Championships held other year since 1977 1991 World Champs will August Netherlands nearly 30 countries com peting Making up U S team top three fin ishers team selection finals held Denver last Labor DayLarry Jolly Daryl Perkins Joe Wurts Los Angeles area guys definitely world-class fliers believe have excellent shot winning World Champs team trophy something have never done Itll proud day American Sailplaners can pull off AMA pays entry fees transportation over seas living costs during contest team has substantial additional expense almost 48 Model Aviation Radio Confrol Soaring Byron Blakeslee 3134 N WInn*ago Dr Sdalla CO 80135 superlative quarter-scale DG-300 Jamie Carpenters Concord NH answer re alistic can get Jamie scratch-built everything Graupner spoilers instru ments H Designs pilot 8 1/2-lb Sailplane has molded fuselage foam core wings stab both balsa sheeted time RC Scale World Championships bold ID numbers fuse wing bottom Byrons -scale Roke ASK-la Vinyiwrite purchased good-flying ship Tony Arnoux imparts Miami years worth practice home week Europe just prior champs have traditionally supported team purchasing special logo souvenirs year Byron made vacuum pump wing bag ging old refrigerator compressor pump hss rope handles both ends Jamie Carpenters DG-300 aloft Eppier 27 long Building how-to text 214 airfoil gIves realistic flight speed Left Harley Michaeiiss latest Jouster won prestigious Northwest Soaring SocIetys 1990 Season Point Championship refined se quel Keetah its Harleys beat far terms structure performance handling Right Jouster has all-wood glassed-over fuselage all-foam-core wing unusually rigid fiat center section new type internal aileron driver called DADS tEA IN CONIRON J Losing control can night- modeling radio repair So avoid mare wrong response toa inflated repair costs undue given command can take its service time Radio South toll model fast economical inyour nerves e radio service wallet Radio South wejTI depend Radio know feel aboutElU h customer satisfaction hobby too areI] just motto Its avid RC enthusiasts way life nearly half century Let us put back control combined experienceincQj oil Free Order Line Orders Only Pleaserepair information 1-800-962-7802 5524 N Palafox Pensacola FL 32503 904 434-0909 pins patches T-shirts sale Prices $250 pin $300 patch $500 pinand-patch set $1200 T-shirt Dont get indicate T-shirt size Additional contribu tions team fund course welcome Please send order USA F3B Team Fund PO Box 3242 Lakewood CA 911703242 Team Manager Randy Spencer wrote say team practices going well Speed duration priority far dis tance practice begin soon team looking F3B events attend early part season help stay attuned pres sures actual contest conditions Randy also sent short biographical sketches of team members Im sure readers will interested learning about three magnificent fliers Larry Jolly started flying RC Sailplanes com petitively 1979 has won five Nats Sail plane competitions both Unlimited Stan dard classes Larry won first F3H World cross-country Sailplane championship held South Africa 1985 flying model own design member 1989 US F3B team placed 10th World champs held near Paris Larry known modelers LIMP kit manufacturing company produces line top Sailplane designs also recog nized activities movie world spe cial effects having built flown aircraft such films Die Hard Flight Intruder Miracle Landing Airwoif Larry Heli copter columnist Model Aviation con tributing columnist MAN magazine Daryl Perkins has flying Sailplanes since 1985 immediately drawn Slope Racing aspect sport because need speed quickly became premier fliers Slope Race circuit win ning 1988 1989 Hans Weiss Memorial Slope Race both classes 1989 Nats Slope Races club local races Drawing racing experience Daryl excels F3B speed distance tasks Joe Wurts design engineer working air craft conceptual design Lockheed Advanced Development company professional career training BS MS Aero EngineerBALSA WOOD 1/8iNcH3648 1/8 1/80912 BALSA WOOD1/6 3/161216 STICKS1/8 1/41418 1/8 3/817 22 1/16INcH3848 1/8 1/21826 1/16 1/16061/8 3/42635 1/163/3207 1/16 1/609 1/1603/1610 1/16 1/411 1/163/814 1/16 7 1/16 3/422 3/16iNcH3648 12 143/163/161416 16 3/16 1/41520 183/163/61722 213/16 127 303/16 3/43041 3/33INcH3648 I/4INcH3648 3/32 3/3208121/4 1/41722 3/32 1/810141/43/81927 3/323/1611161/4 1/22231 3/32 1/414171/4 445 3/323/61020 3/32 1/21722________ 3/32 533 Doobi BIa Wood Prce Sproce 004 8,wooo Slicks 5/16INcH3648 5/16 05/162329 5/16 3/62532 5/1601/23039 0/163/44256 3/8INcH3648 3/8 03/82940 3/8 01/23344 3/8 3/44764 I/3INcH3648 1/2 1/24052 1/23/45675 TRIANGULAR CUT BALSA 1/4 1/436 3/8 36 1/2 036 3/4 0 36 1 0 1 36 BALSA PLANKS 3/4336190 1236178 1336246 104036324 2236246 2336352 20436496 33o36524 3436728 27 31 40 50 65 BALSA SHEETS 1INcH3648 1/16 12939 3/32 3 1/8 13547 3/16 13952 1/4 0 14461 3/8 0 15777 1/2 0 17094 2iNcH3648 1/3223243 1/16023951 3/32 8 1/824964 3/16 7 1/426790 3/8282110 1/22121161 TAIBI 3iNcH3646 1/3234357 1/1634662 3/32 0 35675 1/836486 3/160377102 1/4390120 5/163110143 3/83128171 1/23161214 4INcH3648 1/3247093 1/19478108 3/32488117 /54 102 135 3/164 122 162 1/44 140 207 3/8 5 290 1/24 234 348 ing definite assets pursuit improved design construction techniques highperformance Sailplanes has flown competi tively since 1977 Nats placed sec ond first contest Through years has maintained diversi fied interest sport shown sampling accomplishments three-time winner International Slope Race winner first Mas ters Soaring contest winner 1989 Nats Hand-Launch event winner 20 consecutive cross-country events since 1983 course rec ords holder FAT certified World Record two National records declared dis tance 141 miles launch landing Joes wins accomplished planes own design using advanced composite construc tion methods Joe dedicated using knowl edge experience representing United States Soaring Holland Harleys latest design Sailplane enthusiasts name Harley can mean Harley Michaelis Walla Walla Hes designs pubContinued page 147 BIRCH PLY WOOD 1/84 12 12195 1/64 1224389 1/64 1248801 1/64048483204 1/481277 1/40120 12196 1/4012024314 1/4012048626 3/61212193 3/8 0 12 0 3/8 770 1/2 12 I2216 1/2 1224433 1/2 1248865 1/3261264 1/32 120 12127 1/320 1224257 1/320 1246506 1/1661283 1/160 /2 12125 1/16 1224250 1/16 1248500 3/3261297 3/321212194 3/320 12024387 3/32 1248774 1/8612107 1/80 12 12213 1/8 12 24425 TAPERED TRAILING 1/8 1248850 EDGE3648 3/16060 12791/80 1/22432 3/16 12 121063/16 3/43143 3/16 12243141/40 14258 3/16 12048626 5/16 11/44765 _________________ 3/80 1I/25677 * OPEN TO THE PUBLIC * LITE PLYWOOD 1/8121282 1/801224164 1/8 12048328 April 1991 49 Superior Aircraft Materials 12020-G Centralia iian Gardens California 90716 865-3220 Handling Charge S500 $375 COD mum Order $2000 plus UPS accept Personal checks COD fornia Residents add 68A Sales Tax pends suspect type aircraft question have no doubt lot experi mentation remains done Keith Shaw has demonstrated irrefutably sport Scale models fighter aircraft will fly very well aerobatic perform ance excess full Scale capability may same subjects built com petitive levels Scale fidelity atten dant higher wing loadings will comfort ably capable Scale flight maneuvers seems door open right now lot highly competitive Electric pow ered Scale airplanes make appear ance responding advertisers mention read about Model Aviation Soaring/Blakeslee Continued page 49 lished model magazines always seems think up better ways doing things No disre spect insurance agents Harley missed true callinghe should have aeronautical design engineer Harley sends us info lat est Enclosed some photos Open class Jouster refined sequel previous designsthe Atrix December 1986 MA Keetab June 1989 RCM Span 120 area 1038 sq all-up weight 60 70 oz de pending balsa grade radio gear used best far terms structure performance handlingthe bastion popular line kit Gliders flew 1990 sea son championships Northwest Soaring Society Others have used much-touted designs laud comparative performance handling Jouster-type airframes Jouster has all-foam-core wing un usually rigid flat center section has 3/8-in balsa vertical webs set between top bottom spars made up strips l/ ply cut 3A wide carbon fiber epoxy laminate between Sturdy receptacles receive spring steel support blades extending tip sections Tips lock simple mechanism couples aileron hardware Featured new type aileron driver thats easy make call DADS Direct Ail eron Drivers bind-free slop-free light sim ple totally internal no bellcrank ex ternal clevis threaded rod horn exit guide April 1991 147 Made America ILW American Technology RJL Manufactures USA RJL RIC & U/C ENGiNES 15 thru 61 Forster Glow & Ignition Engines ACTORY PARTS & SERVICE FOR HB Engines Cox Conquest 15 Kraft 61 Taipan AC HGK Engines Testor/McCoy Series 21 Forster Remco Viking twin Cot write free information RJL Industries P0 Box 5 Sierra Macire CA 91025 818 359-0016 S D A monthly publication covering International RC Soaring Scene mUSk $19 yr$261yrlstClsss CanadmilexIco $261yr US funds Asia & Pacific $421yr US funds Eun2pe & UK $3Wyr US fund Surface MaN ForsIgn 221yr US funds R/C SOARING DIGEST PO Box 6680 Concord CA 94524 LET US BUILD YOUR NEXT R/C AIR CRAFT WE WILL BUILD ANY AIR CRAFT INLUDING GIANT SCALE IN THE BONES OR READY TO FLY PROMPT DELIVERY NO DEPOSIT REQUIRED BYRON KITS WELCOME BUILT TO FLY CALL FOR PRICE QUOTE FRANK V PONTERI MODEL AIRCRAFT CO 609 391-1855 last time really enjayed building kit Stinson high quality hand cut kit lots vacuformed extras piece detailed Fiberglass Cowl Wire parts pre-bent complete hardware package included Kit requires 5 servos 7 flaps Wing Span 74 Wt 8-9 lbs Engine Sizes 60-120T FS 60-90 TS Plug Wing Panel easy transporting Go ahead Spoil Yourself Deserve ltl $15900 Postage & Handling Color Catalog nine other quality kits $300 info write Call 517-781-3000 Fax 517-781-4322 AERODROME MODELS LTD S Miller Rd naw Ml 48603 Servos center-clustered including wing helps preserve good roll response avoids long leads needed servos placed outboard Hidden A-in nylon bolts firmly secure wing After trying several newer airfoils Ive set tIed 5D7032 used has particularly pleasing handling thermaling characteristics wide speed range its thick enough typically used chords fully recess pop ular smaller servos Incidentally SD7037 wind tunnel model tested Princeton built model want known its polars en hanced paper-thin trailing edge would impractical field use Hence claims about its alleged superiority over 5D7032 S302 1 might taken grain salt Jousters curvaceous sturdy fuselage wood fin made light balsa glassed over painted rudder stab simple lightweight built-up structures Inte gral aluminum sharks teeth fit slot nose quick braldng needed wing placement light tail feathers balance generally attained using 800-mAh pack out additional lead fuselage profile retains pronounced droop snoot Ia Keetah keeps flaps off turf landing droop lowers centerof-gravity stabilizing pendulum effect avoids exasperating last-second belly rota tions ruin landings use both Airtronics Vision Ace Mi croPro radios functions needed op timize performance friend handles ship very well however using four-channel radio three-way Y-hamess runs rudder two aileron servos plugged aileron channel just pushes elevator stick ward needed pitch compensation down flap throttle stick Flaps reflexed speed throttle trim tab Jouster eliminates need spend fortune get fine performance cost materials wood adhesives hardware covering etc about $100 counting cores friend Harry Smith modelers modeler can provide dandy pink foam cores $35 including shipping address 814 Home Walla Walla WA 99362 Anyone interested Jouster might get Kee tah plans #1045 @ $1150 RC Modeler magazine have $12 package make Jouster includes complete new construc tion text detail sheets DADS fabrication spring steel bars fiberglass canopy latter eliminates need make male plug female mold canopy Im 26 5 Roosevelt Walla Walla WA 99362 telephone 509/5292562 Heres brief deseription Harley Michaelis DADS setup Picture three-inch-long 3A2 music wire MW shafts installed fore aft main part wing forward ailerons shafts ex tend inch beyond wings bent 45 0 angle same plane wing bent portions fit snug slots aileron front ends shafts bent 900 driven aileron pushrods As shafts rotate 450 bent wires move up down drive ai lerons Ingenious Vinylwrite Custom Lettering finish quarter-scale Roke ASK-18 needed ID num bers both sides fuselage bot tom left wing fuse numbers 25 high wing 6 high wasnt about attempt painting saw ad Vi nylwrite RC Soaring Digest sent off photo full-size ASK-iS copying ask ing what could Owner Art Morgen quick ly responded few samples suggested type style close what needed said Go self-sticking custom letters ber ries As received very thin 2-mil vinyl graphics properly spaced captured tween top bottom sheets peel off bot tom sheet place numbers whatever model rub down remove top sheet Thats process simple fast gives beautiful-looking lettering Art offers sizes shapes colors etc best bet write call information packet Vinylwrite 16043 Tulsa St Granada Hills CA 91344 telephone 818/363-7131 Seale Soaring Jamie Carpenter Concord NC kind enough send some photos beau tiful DG-300 following letter July 1990 issue MA showed picture Bill Wynans A-scale ASW 20 asked realistic can get Well after four years off-and-on work 600 hours design construction swer question Sailplane quarterscale DG-300 molded fuselage foam core wings stabilizer both balsa sheet ing parts plane did scratch-build Graupner spoilers struments H Designs pilot ship weighs 85 lb uses Eppler 214 airfoil Continued page 152 148 Model Aviation Stinson 108 T-50 uc7a CESSNSCAT QUAL Made 0 White Laminating Epoxy & Fiberglass Strong Lightweight No Pin Holes tle e Construction dor Fly McDaniel Power New Solid State On-Board Glow-Plug Drivers Now can drive 1 2 glow plugs efficiently automatically new McDaniel On-Board Glow-Plug Drivers engine 2 4 stroke glow has 1 2 cylinders Model 471 472 On-Board Glow-Plug Driver will ease jobs starting maintaining idle during taxiing power down ffight maneuvers FEATURES INCLUDE Servo Reversing Optically Coupled Circuitry No RH Automatic Shutdown Via TX RX Connector Plug Battery Pack Remote Glow Plug Indicator Panels Available Separately Battery Pack AC Charger NOT Included Available Separately See Local Hobby Dealer Contact McDaniel R/C Inc 1654 Crofton Blvd Suite 4 Crofton MD 21114 Soari ng/Blakeslee Continued page 147 gives very realistic flight speed would thrilled included picture column look forward seeing Scale projects featured Making own vacuwn pump Last months column contained Frank Westons article vacuum-bagging wings Franks remark about ing able make vacuum pump zero cost done right piqued inter#st seemed like challenge something akin scav enger hunt started visiting friend Ron Watts Colorado Springs Ron bag ging wings Pikes Peak SS guys told hed made pump refrigerator com pressor review refrigerator works com pressor increases pressure circulates refriger ant through condenser expansion valve evaporator take just compressor hook up hose inlet side exhaust outlet side have vacuum pump Recall per fect vacuum atmospheric pressure about 299 inches mercury 147 pounds per square Visa MC accepted Phone 301721-6303 301721-6306 inch sea level Ron used old GE refrigerator compressor got brothers appliance store California pulls about 22 inches steadily spits oil Out exhaust Apparently oil circu lates refrigerant lubricate compres sor Ron has exhaust pipe connected small tank serves oil separator Once opens valve lets oil drain back compressors oil reservoir Rons pump has homemade electronic vac uum regulator uses now-unavailable micro processor chip 30-lb Freon tank used reservoir tanks nonrefillable refrigeration shops throw away tip Julian Tamez excellent videotape Vacuum-Bag See Frank Westons ar ticle Channel 1 listing last months col umn Figuring Id let fingers walking got out Denver yellow pages combed through Refrigerator Repair listings Drew blank tried Appliance Repair found few places would sell used compressors around $50 New ones $150 up wasnt simple Frank implied Next Used Appliances section Pay dirt response query about junk refriger ators kind gentleman named Al said Yeah got dozen out back ing dump ke what want Once down excellent emporium located less savory section town discreetly asked Al junkers worked pointed Frigidaire said knew com pressor ran decided recondition refrigerator because too old So thats compressors scarce realized Used appliance dealers salvage good compressors re pair refrigerators have conked out Since knew zilch about business tried get quick course Al Seems loss re frigerant burned-out motors common faults Al added valves go wont pump over six inches vacuum Needs over 20 inches run fridge Before operate junk refrigerator choice refrigerant Freon similar gas should safely evacuated can hacksaw off inlet outlet pipes saving much possible Make sure get nec essary electrical partsnamely starting relay capacitor control thermostat inside cold space will wired relay isnt needed peculiarity Frigidaire com pressor rubber mounted between hefty steel bottom crossmember lower part cold-space sheet metal remove compres sor unbolt crossmember frame also noticed compressor ra diator piped up turned out oil cooler no external oil reservoir Rons GE Attached near inlet com pressor little cylinder about four inches long two inches diameter Al said filter decided Id better take crossmember along well length 4-in copper tubing hooked up icemaker Once home problem assemble everything compact pump possible Rons GE compressor four mounting feet made bolting wood base simple job crazy Frigidaire single rubber-clad posts top bottom wouldnt stand up itself Plus oil cooler stuck out 14 inches best course appeared to make use bottom mount crossmember Luckily compressor sitting bottom mount oil cooler just fit within length crossmember So crossmember would nicely base pump wire hoop could hold compressor base Freon tank could fit above cooler making piping runs short starting relay on/off switch would fit other side compressor next step obtaining other necessary parts especially vacuum regulator switch bit Serious Helicopter Hot Dogging PISTON/CYLINDER AbSEMBLIES Superior Horsepower wI Tuned Pipes True ABC Construction Finest Materials & Workmanship Arch Port Available OS SFN-RFN Other Types & Sizes Available Pattern Racing Send $100 complete Catalogue Engines Accessories PERFORMANCE SPECIALTIES 619-729-1658 PO Box 4003 Carlsbad CA 92008 152 Model Aviation asking around produced name Tom Overton member South Bay club Tom sells good subminiature adjustable switch $30 plus $2 S&H address 1302 Arleen Ave Sunnyvale CA 94007 bought vacuum gauge Grainger mechanical supply house $8 neighbor commercial re frigeration business gave both 30- 50pound Freon tanks bigger would efficient 30-pounder fit better piping retrospect Id recommend using A-ID vinyl tubing plastic tees Xs much possible theyre cheap produce good seal used A-in copper tubing icemaker three brass compression tees about $2 hardware store vac uum gauge switch could piped solidly tank thus freestanding use vinyl tubing brass pipe-threads-to-tubing adapters about $1 still required gauge switch Also parts would need mounted some sort panel valve Freon bottle has A-in cop per flare fitting dont have flaring tool ask folks purchase com pressor theyll flare end short piece copper along donating Freon tanknothing like making pest yourselr next obstacle what looked like inlet filter compressor stuck out too far Best cut off knew would danger ous because wasnt space use tubing cut ter hacksaw would make copper filings might later get sucked compressor Off went anyway already mess drilling out 5/ copper inlet pipe accept A-in copper couldnt hurt much shop vac wouldnt get filings Out inlet used small cotton swabs end tweezers carefully clean short length A-in copper soldered vinyl tubing could used connect pump rest plumbing Incidentally nothing inside filterlike part dont know what knowledgeable about refrigerator com pressors would care tell us about Id grateful letter electrical side Frigidaire straightforward Three wires go starting relay motor Al said extra wire includes capacitor starting winding cut 110-volt power cord added on/off switch obtained junk box Two wires connected vacuum switch replace thermostat wires controlling start ing relay caution note relay said Must mounted vertically Fine remained clamp vacuum hose would normally go bag plug power cord flip switch worked vacuum quickly built up max 23 inches played vacuum switch finally adjusting 15 incheswhich means pump goes off 15 comes 13 inches mercury supposed good vacuum extruded foams white bead-board lower gauge stayed quite constant pump off indicating vacuum wasnt leaking back through compressor piping con nections tight fact after pump shut off overnight still six inches vacuum next morning compressor runs very quietly no oil comes out ex haust Evidently doesnt need separator Rons does Some baggers use refrigerator compressors say shot compressor oil let time time good idea Thats other thing need learn about havent chance use pump bag ging yet Im sure will work okay Total inThkeA Load Off needs carry around deadweight Sullivan Skylite Its lightest conventional style wheel can buy Engineered unique foam core thin tough rubber skin Skylite cuts weight conventional wheel about half So can take off easier fly longer maneuver better Whats Skylites rugged build es re eated take- offs landings bit well its heftiest competitors never fails spring back round atter long model sits runway workbench So youve thinking about takingCsjJJii off weight talk dealer about seeingPRODUJIS light Skylite isPO Box 5166 Baltimore MD 21224 Getting Better Ideas Off Ground vestment about $56 mostly vacuum switch question long old pump like will last would costly ex tremely annoying fall $50 worth foam core carbon fiber glass cloth wet epoxy inside bag RC Pylon Racing/Hager Continued page 56 equipment racing ended after fifth round repairs made before racing would resume Sunday morning Saturday night food catered field stayed around presentation National Points Trophies Randy Ritch won national cham pionship followed Rony Barlevav Jim Allen R L Cranfill Dick Ritch Awards points given tenth place Racing started shortly after 900 am Sunday action picking up left off day before Gary Schmidt pushed Mike Del Ponte double cut round six put him down six points tighten things up quite bit Bob Nickle started Sunday off right putting what would fastest heat weekend 11745 round seven Randy Ritch Fred French fought lead against Doug White aker putting him down two points close races continued remainder day last round Spencer Wallace Jim Lime fought lead way finish line Spence turning 11910 Jims 11957 decision first place came down last heat day between Jim Allen Fred French Fred win would tied first Gary Schmidt have fly off result closest races either us ever Fred led first eight April 1991 153