FREE FLIGHT DURATION STAVING IN SIGHT last contest launched same thermal two other Wakefields other models similar color schemesred orange D-box white tissue covering rest wing model solid black underside difference amazing bright sun other two models hard pick up overhead black however really popped out have using black undersides wings several years now Im convinced easiest see model overhead fact started using black pylon rudder model could seen longer downwind problem model gets silhouetted against dark trees think Ill try white pylon next know thing wont use fancy multicolored covering job bottom solid dark color works much better Although top wing really important visibility standpoint during flight can very important lose model have aerial search situation white probably best choice perhaps touch fluorescent orange white upper surface will also have added benefit reflecting heat wing model sits out sun Tan II Two December column mentioned FAI Model Supplys new Tan II rubber As may recall new stuff seemed bit stretchier familiar Tan rubber word 40-gram Wakefield motor needed about 155 inches long 400 turns maximum older Tan motors need about 175 inches long same number turns week before regional Semifinals made up couple motors flight-test 155 inches long other usual 175inch length Well shorter motor felt great during winding 404 turns pow broke right winding hook safe side decided stay old reliable Tan never seems break Semifinals did bring along other Tan II motor however Tan worked fine first five rounds Saturday early-morning 2 10second round Sunday decided give Tan II another try 175-inch-long motor wound safely 474 turns about 105 inchounces torque about 80 turns typical Tan motors about 10 inchounces less torque burst bit less Tan II models solidbalsa wings didnt flutter quite much cruise looked better motor run about 10 seconds longer flatter torque curve would seem make Tan II good choice Mulvihill Coupe well non-auto Wakefields gentler burst would easier control need autosurfaces April 1994 99 New VIT fittings eastern Europe require small-diameter Ross Jahnke Baton Rouge LA flies Wakefields sheeted lines braided Spectra fishing line answer high-aspect-ratio wings carbon wing/stab mounts Bob Junks potent AD-powered F1J uses clear mylar covering Light smooth best choice visibility Don Chessons FiC model features V dihedral winglets interesting bunt mechanism see below Bunt system has central mounting plate fits inside fuselage pivoting plates power glide adjustments way carefully checked winding hook blown motor 10 power magnifying glass lot rough machining marks may have contributed breakage few minutes file emery board buffing wheel took care problem Carbon Castings Ross Jahnke has come up very simple easy way cast parts carbon fiber Instead machining reusable mold Ross makes out scrap balsa sheet cut glued up form cavity part packs mixture epoxy resin carbon fiber tow No mold release used Next covers top mold plastic tape clamps piece scrap plywood push down carbon-epoxy mixture After epoxy sets up Ross simply breaks away balsa leaving finished carbon part Sanding filing clean up rough edges Since balsa molds quick cheap make usually makes multiple molds casts extra parts Lighter Lines new Russian/Ukraineinspired Wakes use some very small parts especially back end weight important Andriukov VIT fitting example measures about long Needless say holes lines running back timer small usual line Cortland Micron 20# test fly line hacking just too big Ed Turner told eastern Europeans use thin 8# 12# test monofilament line thought using monofilament just too scary An article local newspaper early last summer mentioned new braided Kevlar fishing line sounded promising Unfortunately line short supply never could find did come across braided Spectra line called Versitex bought 35# test line lightest could find about half diameter Micron braided Dacron line weight slightly 12# monofilament feel much comfortable using new braided stuff should able find Versitex line sporting goods stores write Versitex America Ltd Spring City PA 19475 Easier Bunting Most bunt mechanisms Ive seen power models look pretty complicated Don Chesson Baton Rouge showed simple system made Ray Harlan Hardy Brodersen-designed Koko FlC model Although Dons example nicely machined mechanism could easily made using hand tools drill press consists central plate 1/s-inch Delrin sheet familiar Delrin very easy-to-machine plastic plate fits carbon fiber fuselage tube Four screws hold place central cutout saves bit weight acts guide tube takes stab pull-down line through 900 bend stitched place soft wire running through series holes Delrin plate rear unit small rectangular blocks Deirin mounted either side single pivot screw blocks spring-loaded rear using two safety pin-type springs Lines running timer pull blocks forward launch stab pulled down until hits power adjustment screw top block bunt line holding left block forward released timer pivots back out way stab pulled down against bunt adjustment screw top center plate Next timer releases line stab moves up against glide adjust screw Early versions used needle valve finer adjustment later version uses Delrin block adjustment screw DT right block pivots back timer releases line Sympo 26 Twenty-Sixth Annual National Free Flight Society Symposium out Actually has out since Nats last September As usual Sympo offers rich blend technical articles down-to-earth pieces particular interest series short technical articles originally appeared NFFS Digest back early 1970s Andrew Bauer continues series computer-simulated flights time exploring bunt FlA gliders Interesting stuff never has chase flight Ten Models Year selection includes Pierre Bruns Nordic Dan Tracys Wakefield Doug Joyces FlC model yes canard international category Marvin Mace takes Large AMA Gas honors Bruce Augustus FlJ getting Small Gas award Bud Romaks Mulvihill picked Large Rubber model year John ODwyers Winter Hawk Coupe won Small Rubber category Plans Winter Hawk available through Model Aviation plan number 646 Other awards include Walt Van Gorder Easy B Don Srull Electric-powered ducted-fan Russian jet Jim Walston received special award Walston Retrieval System get very own copy Sympo write Fred Terzian NFFS Publications Director 4858 Moorpark Ave San Jose CA 95129 Cost $20 NFFS members $24 nonmembers Shipping extra sure ask about other publications available NFFS Gotchas originally planned compile list of things can go wrong free flight would require least whole magazine Instead lets focus conventional pop-up-stabilizer DT system what can go wrong model DT tail must pop up means rubber bands hold stab must strong enough tilt stab up proper time Recycling may great beer cans newspapers rubber bands Use new fresh rubber bands flying session Sometimes day out sun enough weaken band doesnt pull stab way up lost two models few years back related problem rubber bands holding down front stab fresh Shocer-type mount used pinched rubber bands pulling stab mount back hook stab Widening slots stab mount allowed full length band pull also started running band through slots stab mount act forward stop running second rubber band around front stab mount bit leverage fuse DT generally reliable terribly accurate fact have never DT fuse fail work have short-fused number times long-fused woods once twice last time lost model longfusing some very dense woods run out fuse during contest mistake number borrowed some last round didnt take time bum sample new fuse check timing mistake number two just before launched decided pull fuse out another notch wouldnt short-fuse mistake number three course model boomed out big thermal DTd about minute later should have ended up woods fuse simply fails out model Usually caused using too short piece fuse needs run well up snuffer tube snuffer tube actually holding fusenot DT rubber band snuffer tube should matched size fuse minimum room fuse rattle around Continued page 110 100 Model Aviation y bunt mechanism used needle valve glide adjustment screw now used precise settings C CItE 31 Light Stone RAF RCAF Sand Yellow- Germany Tan USAAF FS#20400 CItE 32 Middlestone- USAAF Tan Japan Mid Stone RAP F1CAF FS#30266 CItE 33 Dark Earth- LJSAAF RAP RCAF P5130116 CItE 34 Lt Blue Germany P5126329 CItE 35 Azure Blue USAAF RAP ACAF Germany P5135231 CItE 35 Grey Japan P5136492 CItE 37 Extra Dark Sea Grey RAP RCAF Neetral Grey USAAP P5136118 CItE 38 Light Slate Grey RAP ACAP Green Grey- Germany P5134159 CItE 39 Dark Slate Grey RAP RCAF Army Green Japan P5134098 Perfect Paint high quality part fuel proof paint combines conveni ence superb results Perfect Paint will cover dopes epoxies metals fiberglass plastic smooth hardthat will crack chip CItE 40 Ok Green & Extra Dk Sea Green RAP RCAF Dark Green Germany P5134079 CItE 41 Navy Green Japan PS#34058 CItE 42 Olive Drab USAAP 595 Original P5134087 CItE 43 Dead Flat Clear 0% gloss CItE 44 Sea Blue Semi-Glass USNI PSI 25042 CItE 45 Intermediate Blue Semi-Glans USN P5135164 CItE 46 Duck Egg Blue Germany RAP P5134516 CItE 47 Zinc Chromate Type #1 USAAF USN RAP RCAF P5134 151 CItE 48 Zinc Chromate Type #2 USAAP USN P5133814 CHE49 Olive Drab USAAF 595-A Modern P5134087 CItE 50 Roandel Red RAP RCAP Roundel Red Japan P5130111 CItE 51 Sky USAAE USN Sky TypeS- RAP RCAP P5134424 mar resistant finish CItE 52 Insignia Blue USAAF USN Reundel Blue RAP RCAP Dark Blue Germany P5135044 CItE 53 Dark Grey USAAF P5135237 CItE 54 Ocean Grey RAP RCAF P5136178 CItE 55 Dark Gull Grey USAAP USN P5136231 CItE 56 Dark Sea Grey RAP RCAP P5136270 CItE 57 Sea Grey Medium RAP RCAP PSI36373 CHE 58 Medium Grey USMP PSI 38375 CItE 50 Light Grey USAAP USNI Light Gull Grey USAAP USN USMC Cockpit Interior Grey USAP USN USMC Grey Italy P5036440 CHESS Light Grey USMP F5136495 FF Durationljoyner Continued page 100 Remember snuffer tubes very important reason Grass fires can deadly Some power fliers have problems fuse DTs large power models Evidently what happens vibration shakes out glowing cotton center part fuse best cure make sure entire end fuse including outer woven covering burning before launch technique light end fuse allow itto burn 15 30 seconds gently put fuse out Set length start engine light fuse preburned end will catch quickly burn evenly Clockwork timers allow much accurate DT remember start before launch timer start switch must work time Most time just isnt good enough unless like build models switch should positioned falls naturally under fingers hold model release seems work best put start switch right side pylon just above motor tube several commercial start switches around number homemade ones Just make sure works time like test start switch least 50 times make sure no problems helps timer runs must remember fully wind timer before flight try wind set timer well before start round can concentrate getting set exactly binocular magnifier big help making sure correct slot scroll Volumes could written keeping timers clean properly lubricated Ill just say lot easier pull timer clean put back model build whole new model Remember too timer compartment must clean free dust Join squadron Brand new squadron markings. Available 1/8 1/6 & 1/4 scales Sefd 39it6wckae Theres always something new major decals orkssquadron insignias NORTHEAST SCREEN GRAPHIcS 21 FISHER AVE EAST LONOMEADOW MA eieg TEL 413-525-4t1e FAX 413-525-3164 PRODUCTS FoR rue Complete Line Exhaust Systems * Tuned Pipes Muffled Tuned Pipes Headers uri Mufflers Expansion Mufflers Helicopter Ball Mufflers ialized Exhaust Systems Unsupassd Wnk,~hin h Prfomance 110 Model Aviation CHARTS AVAILABLE II IIUU.j. UUUL PO Box 2480 Sandusky OhIo 44870 Phone & Fax 419-797-2208 like put couple coats clear dope compartment seal balsa rubber models Check timer DT operation before go out test fly Its lot easier fix problems home field Make sure DT line will snag part model example have Wakefield uses two nylon screws hold down trailing edge wing screws extend about 3/ inch below bottom wing guess what DT line will snag screw tried mak it wouldnt time have forgotten trim nylon screw flush bottom wing model has f4iled DT Luckily have not-thermal flights have similar problem Seelig timers winding ky DT scroll can catch DT arm Jock up timer wont turn arm cant swing way back DT line never releases carefully follow instructions Doug Galbreath includes Seeligs sells wont happen can have done remove winding key weighs about gram use modified screwdriver wind timer Remember just mistakes Ive made witnessed lot gotchas waiting out careful FAI TAN RUBBER 1/4 3/16 1/8 thick 1 lb box- $1475 Iidudss 4 oz Slick Lube $1375 Inolube kcoets$1751 10 lb box $11000 UPS Delivered Postpaid US via UPS Cal res add 8% sales tax Made USA Slow cure coossiatant qualIty Ask FAI-TAN 99/90 catalog llts 100FF kits CROCKIT HOOKS 140W MADE BYFAI SEND $150 Model Supply FOR CATALOGTORRANCE Ca 90550CARSOP CA 90145 TEL 2138309039 CS COMPETITION ENGINES CSG 049NORMAL BE ABC uc 28000 RPM JW CSGX 049 NORMAL BB ABC RC 28000 RPM CSG 049SPEED BB ABC UC 35000 RPM NEWCSGXO49SPEEDBBABCRC35OOORPM CSG 061NORMAL BB ABC UC 27000 RPM NEN CSGX 061NORMAL BB ABC RC 27000 RPM CSG 061SPEED BB ABC UC 35000 RPM NEW OSOX 061SPEED BE ABC RC 35000RPM CSG 09NORMAL BE ABC UC 27000 RPM NEW CSGX 09NORMAL BE ABC RC 27000 RPM CSG 09SPEED BE ABC UC 35000 RPM NEW CSGX 09SPEED BE ABC RC 35000 RPM CSG 11NORMAL BE ABC UC 27000 RPM NEW CSGX 11NORMAL BE ABC RC 27000 RPM CSG 15PBE SPORT UC 18000 RPM NEW CSGX ISP BE RC sPORT 18000 RPM CSG 15NORMAL BE ABC UC 27000RPM NEW CSGX 15NORMAL BE ABC RC 27000 RPM CSG 15SPEED BE ABC OR AAC UC 37000RPM NEW CSGX 15SPEED BE ABC OR AAC RC 37000 RPM CSG 15BE AAC UC COMBAT SPECIAL NEW CSGX 15BE AAC RC COMBAT SPECIAL NEW CSD 15SPORT DIESEL NEW CSDX 15BE MC TEAM RACE DIESEL WITR CARE CSG 21SPEED BE ABC UC 28000 RPM NEW CSGX 21SPEED BE ABC RC 28000 RPM CSG 21 NBE ABC RC MARINE 28000 RPM CSG 60BE ABC RC 18000 RPM CS1TUNED PIPE 049-061 09 add $200 C52TUNED PIPE 15-21-60 CSRSPEED PAN 049-061-09 CSWSPED PAN 15-21-60 CSHGLOW PLUG FOR CS ENGINES CSSTANDARD LONG GLOW PLUGS RACE 100 AFTER RUN OIL CIPOLLA 15 R/C WITH MUFFLER YOUNGSTER SPECIAL 049 UC GLOW CHECK OR MONEY ORDER SORRY NO CO D S SEND $600 FOR SHIPPING & HANDLING $375 FOR PARTS OR ACCESSORIES FLORIDA RESIDENTS ADD 6% SALES TAX OR JUST SAY CHARGE fl VISA MASTER CHARGE DISCOVER NEW Cs RIC Engines Choice 049-061-09-11 Only $ii999 Save Up $4901 CS UC Engines Choice 049-061-09-11 Only $9999 Save Up $4901 Engines Accessories Sale Great Savings Order Todayl $14200SAVE $4201 $16200SAVE $4201 $14900SAVE $4901 $16900SAVE $4901 $14200SAVE $4201 $18200SAVE $4201 $14600SAVE $4601 $16600SAVE $4601 $13700SAVE $3701 $15700SAVE $3701 $14200SAVE $4201 $16200SAVE $4201 $14000SAVE $4001 $16000SAVE $4001 $5500SAVE $525 $7500SAVE $525 $12900SAVE $1750 $14900SAVE $1750 $13900SAVE $1750 $15900SAVE $1750 $14500SAVE $1950 $16500SAVE $2001 $8500 $19400SAVE $2601 $13900SAVE $1701 $15900SAVE $1701 $16900SAVE $2701 $15500SAVE $1501 SPECIAL $9999 INTRO PRICE $11999 SPECIAL $9999 INTRO PRICE $11999 SPECIAL $9999 INTRO PRICE $11999 SPECIAL $9999 INTRO PRICE $11999 SPECIAL $9999 INTRO PRICE $11999 SPECIAL $9999 INTRO PRICE $11999 SPECIAL $9999 INTRO PRICE $11999 SALE $4975 INTRO PRICE $6975 SALE $11150 INTRO PRICE $13150 SALE $12150 INTRO PRICE $14150 SALE $12550 INTRO PRICE $14499 SALE $6999 SALE $16799 SALE $12199 INTRO PRICE $141 99 SALE $14199 SALE $13999 SALE $2775 SALE $3775 SALE $3675 SALE $4150 SALE $375 SALE $175 SALE $249 SPECIAL $5550 SALE $3499 SEND MAIL ORDERS TO OHS AERO ENGINES LTD 2914 BUCKLEY AVE LAKE WORTh FL 33461 FAX & PHONE 407 965-6150 FROM 6PM TO 9PM ORDER TODAY ALL ENGINES ACCESSORIES AtJfl PAPTAt APP IN STOCKI FaUST NAVE EXPIRATION — EXCLUSIVE Cs DISTRIBUTOR DEALER INQUIRIES INVITED B&P Associates Gives Total Flight Line FREEDOM battery needs call write B&P Associates PO Box 22054 WaCO TX 76702-2054 817662-5587 new electric starter battery pack cuts cord has always tied starter power panel Discover freedom being able start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field BREAKTHROUGH LIVE VIDEO TRANSMITTED FROM YOUR AIRCRAFT Now Can Mount An Airborne Micro Video Camera System Model Airplane Introduce SOS Model -Strap System 1st Ready Strap & Use System Plane Talk r/o accessoy shop Tech info 4-650-5004 Orders 800-795-5008 Po Box 11364 Costa Mesa CA 92627 Nothing Build Assemble No Airborne Receiver Interference No Vibration Problems No Inferior Rebuilt Equipment Total Weight 9oz Including Batteries 80 Seconds Stra onto Aircraft Teat Flown mall 85 ize Airplane We Personalize SOS Vent Name Printed l l April1994 111 , 1 Iectric Connector I Sermos Super Connector wIth Lifetime Guarantee $500 per packet 2 Sermos Super Charging Jack Lit athna Guarantee $550 PfT pacloet S Sermos Standard Connecter $400 per packet 4 Sermos Standard CJoarging Jack $450 per packet 5 Sermos Standard Aiming Switch $400 per packet 6 Sermos insefllon & Extraction Tool $8tt per tool MimimaT Order $i tOt PLUS $200 Icr ShippiTg Handehng OTly Eerlilied Checks Money Orders accepted paymeTt orders Olatrlbutore DeaIra InquIrIes Invited Please call 203 322-694 farther irforrnation S~1S R/C SNAP CONNECTORS INC Cedar Corntrs Stallts Rot 16787 Stamford CT 06905
Edition: Model Aviation - 1994/04
Page Numbers: 99, 100, 110, 111
FREE FLIGHT DURATION STAVING IN SIGHT last contest launched same thermal two other Wakefields other models similar color schemesred orange D-box white tissue covering rest wing model solid black underside difference amazing bright sun other two models hard pick up overhead black however really popped out have using black undersides wings several years now Im convinced easiest see model overhead fact started using black pylon rudder model could seen longer downwind problem model gets silhouetted against dark trees think Ill try white pylon next know thing wont use fancy multicolored covering job bottom solid dark color works much better Although top wing really important visibility standpoint during flight can very important lose model have aerial search situation white probably best choice perhaps touch fluorescent orange white upper surface will also have added benefit reflecting heat wing model sits out sun Tan II Two December column mentioned FAI Model Supplys new Tan II rubber As may recall new stuff seemed bit stretchier familiar Tan rubber word 40-gram Wakefield motor needed about 155 inches long 400 turns maximum older Tan motors need about 175 inches long same number turns week before regional Semifinals made up couple motors flight-test 155 inches long other usual 175inch length Well shorter motor felt great during winding 404 turns pow broke right winding hook safe side decided stay old reliable Tan never seems break Semifinals did bring along other Tan II motor however Tan worked fine first five rounds Saturday early-morning 2 10second round Sunday decided give Tan II another try 175-inch-long motor wound safely 474 turns about 105 inchounces torque about 80 turns typical Tan motors about 10 inchounces less torque burst bit less Tan II models solidbalsa wings didnt flutter quite much cruise looked better motor run about 10 seconds longer flatter torque curve would seem make Tan II good choice Mulvihill Coupe well non-auto Wakefields gentler burst would easier control need autosurfaces April 1994 99 New VIT fittings eastern Europe require small-diameter Ross Jahnke Baton Rouge LA flies Wakefields sheeted lines braided Spectra fishing line answer high-aspect-ratio wings carbon wing/stab mounts Bob Junks potent AD-powered F1J uses clear mylar covering Light smooth best choice visibility Don Chessons FiC model features V dihedral winglets interesting bunt mechanism see below Bunt system has central mounting plate fits inside fuselage pivoting plates power glide adjustments way carefully checked winding hook blown motor 10 power magnifying glass lot rough machining marks may have contributed breakage few minutes file emery board buffing wheel took care problem Carbon Castings Ross Jahnke has come up very simple easy way cast parts carbon fiber Instead machining reusable mold Ross makes out scrap balsa sheet cut glued up form cavity part packs mixture epoxy resin carbon fiber tow No mold release used Next covers top mold plastic tape clamps piece scrap plywood push down carbon-epoxy mixture After epoxy sets up Ross simply breaks away balsa leaving finished carbon part Sanding filing clean up rough edges Since balsa molds quick cheap make usually makes multiple molds casts extra parts Lighter Lines new Russian/Ukraineinspired Wakes use some very small parts especially back end weight important Andriukov VIT fitting example measures about long Needless say holes lines running back timer small usual line Cortland Micron 20# test fly line hacking just too big Ed Turner told eastern Europeans use thin 8# 12# test monofilament line thought using monofilament just too scary An article local newspaper early last summer mentioned new braided Kevlar fishing line sounded promising Unfortunately line short supply never could find did come across braided Spectra line called Versitex bought 35# test line lightest could find about half diameter Micron braided Dacron line weight slightly 12# monofilament feel much comfortable using new braided stuff should able find Versitex line sporting goods stores write Versitex America Ltd Spring City PA 19475 Easier Bunting Most bunt mechanisms Ive seen power models look pretty complicated Don Chesson Baton Rouge showed simple system made Ray Harlan Hardy Brodersen-designed Koko FlC model Although Dons example nicely machined mechanism could easily made using hand tools drill press consists central plate 1/s-inch Delrin sheet familiar Delrin very easy-to-machine plastic plate fits carbon fiber fuselage tube Four screws hold place central cutout saves bit weight acts guide tube takes stab pull-down line through 900 bend stitched place soft wire running through series holes Delrin plate rear unit small rectangular blocks Deirin mounted either side single pivot screw blocks spring-loaded rear using two safety pin-type springs Lines running timer pull blocks forward launch stab pulled down until hits power adjustment screw top block bunt line holding left block forward released timer pivots back out way stab pulled down against bunt adjustment screw top center plate Next timer releases line stab moves up against glide adjust screw Early versions used needle valve finer adjustment later version uses Delrin block adjustment screw DT right block pivots back timer releases line Sympo 26 Twenty-Sixth Annual National Free Flight Society Symposium out Actually has out since Nats last September As usual Sympo offers rich blend technical articles down-to-earth pieces particular interest series short technical articles originally appeared NFFS Digest back early 1970s Andrew Bauer continues series computer-simulated flights time exploring bunt FlA gliders Interesting stuff never has chase flight Ten Models Year selection includes Pierre Bruns Nordic Dan Tracys Wakefield Doug Joyces FlC model yes canard international category Marvin Mace takes Large AMA Gas honors Bruce Augustus FlJ getting Small Gas award Bud Romaks Mulvihill picked Large Rubber model year John ODwyers Winter Hawk Coupe won Small Rubber category Plans Winter Hawk available through Model Aviation plan number 646 Other awards include Walt Van Gorder Easy B Don Srull Electric-powered ducted-fan Russian jet Jim Walston received special award Walston Retrieval System get very own copy Sympo write Fred Terzian NFFS Publications Director 4858 Moorpark Ave San Jose CA 95129 Cost $20 NFFS members $24 nonmembers Shipping extra sure ask about other publications available NFFS Gotchas originally planned compile list of things can go wrong free flight would require least whole magazine Instead lets focus conventional pop-up-stabilizer DT system what can go wrong model DT tail must pop up means rubber bands hold stab must strong enough tilt stab up proper time Recycling may great beer cans newspapers rubber bands Use new fresh rubber bands flying session Sometimes day out sun enough weaken band doesnt pull stab way up lost two models few years back related problem rubber bands holding down front stab fresh Shocer-type mount used pinched rubber bands pulling stab mount back hook stab Widening slots stab mount allowed full length band pull also started running band through slots stab mount act forward stop running second rubber band around front stab mount bit leverage fuse DT generally reliable terribly accurate fact have never DT fuse fail work have short-fused number times long-fused woods once twice last time lost model longfusing some very dense woods run out fuse during contest mistake number borrowed some last round didnt take time bum sample new fuse check timing mistake number two just before launched decided pull fuse out another notch wouldnt short-fuse mistake number three course model boomed out big thermal DTd about minute later should have ended up woods fuse simply fails out model Usually caused using too short piece fuse needs run well up snuffer tube snuffer tube actually holding fusenot DT rubber band snuffer tube should matched size fuse minimum room fuse rattle around Continued page 110 100 Model Aviation y bunt mechanism used needle valve glide adjustment screw now used precise settings C CItE 31 Light Stone RAF RCAF Sand Yellow- Germany Tan USAAF FS#20400 CItE 32 Middlestone- USAAF Tan Japan Mid Stone RAP F1CAF FS#30266 CItE 33 Dark Earth- LJSAAF RAP RCAF P5130116 CItE 34 Lt Blue Germany P5126329 CItE 35 Azure Blue USAAF RAP ACAF Germany P5135231 CItE 35 Grey Japan P5136492 CItE 37 Extra Dark Sea Grey RAP RCAF Neetral Grey USAAP P5136118 CItE 38 Light Slate Grey RAP ACAP Green Grey- Germany P5134159 CItE 39 Dark Slate Grey RAP RCAF Army Green Japan P5134098 Perfect Paint high quality part fuel proof paint combines conveni ence superb results Perfect Paint will cover dopes epoxies metals fiberglass plastic smooth hardthat will crack chip CItE 40 Ok Green & Extra Dk Sea Green RAP RCAF Dark Green Germany P5134079 CItE 41 Navy Green Japan PS#34058 CItE 42 Olive Drab USAAP 595 Original P5134087 CItE 43 Dead Flat Clear 0% gloss CItE 44 Sea Blue Semi-Glass USNI PSI 25042 CItE 45 Intermediate Blue Semi-Glans USN P5135164 CItE 46 Duck Egg Blue Germany RAP P5134516 CItE 47 Zinc Chromate Type #1 USAAF USN RAP RCAF P5134 151 CItE 48 Zinc Chromate Type #2 USAAP USN P5133814 CHE49 Olive Drab USAAF 595-A Modern P5134087 CItE 50 Roandel Red RAP RCAP Roundel Red Japan P5130111 CItE 51 Sky USAAE USN Sky TypeS- RAP RCAP P5134424 mar resistant finish CItE 52 Insignia Blue USAAF USN Reundel Blue RAP RCAP Dark Blue Germany P5135044 CItE 53 Dark Grey USAAF P5135237 CItE 54 Ocean Grey RAP RCAF P5136178 CItE 55 Dark Gull Grey USAAP USN P5136231 CItE 56 Dark Sea Grey RAP RCAP P5136270 CItE 57 Sea Grey Medium RAP RCAP PSI36373 CHE 58 Medium Grey USMP PSI 38375 CItE 50 Light Grey USAAP USNI Light Gull Grey USAAP USN USMC Cockpit Interior Grey USAP USN USMC Grey Italy P5036440 CHESS Light Grey USMP F5136495 FF Durationljoyner Continued page 100 Remember snuffer tubes very important reason Grass fires can deadly Some power fliers have problems fuse DTs large power models Evidently what happens vibration shakes out glowing cotton center part fuse best cure make sure entire end fuse including outer woven covering burning before launch technique light end fuse allow itto burn 15 30 seconds gently put fuse out Set length start engine light fuse preburned end will catch quickly burn evenly Clockwork timers allow much accurate DT remember start before launch timer start switch must work time Most time just isnt good enough unless like build models switch should positioned falls naturally under fingers hold model release seems work best put start switch right side pylon just above motor tube several commercial start switches around number homemade ones Just make sure works time like test start switch least 50 times make sure no problems helps timer runs must remember fully wind timer before flight try wind set timer well before start round can concentrate getting set exactly binocular magnifier big help making sure correct slot scroll Volumes could written keeping timers clean properly lubricated Ill just say lot easier pull timer clean put back model build whole new model Remember too timer compartment must clean free dust Join squadron Brand new squadron markings. Available 1/8 1/6 & 1/4 scales Sefd 39it6wckae Theres always something new major decals orkssquadron insignias NORTHEAST SCREEN GRAPHIcS 21 FISHER AVE EAST LONOMEADOW MA eieg TEL 413-525-4t1e FAX 413-525-3164 PRODUCTS FoR rue Complete Line Exhaust Systems * Tuned Pipes Muffled Tuned Pipes Headers uri Mufflers Expansion Mufflers Helicopter Ball Mufflers ialized Exhaust Systems Unsupassd Wnk,~hin h Prfomance 110 Model Aviation CHARTS AVAILABLE II IIUU.j. UUUL PO Box 2480 Sandusky OhIo 44870 Phone & Fax 419-797-2208 like put couple coats clear dope compartment seal balsa rubber models Check timer DT operation before go out test fly Its lot easier fix problems home field Make sure DT line will snag part model example have Wakefield uses two nylon screws hold down trailing edge wing screws extend about 3/ inch below bottom wing guess what DT line will snag screw tried mak it wouldnt time have forgotten trim nylon screw flush bottom wing model has f4iled DT Luckily have not-thermal flights have similar problem Seelig timers winding ky DT scroll can catch DT arm Jock up timer wont turn arm cant swing way back DT line never releases carefully follow instructions Doug Galbreath includes Seeligs sells wont happen can have done remove winding key weighs about gram use modified screwdriver wind timer Remember just mistakes Ive made witnessed lot gotchas waiting out careful FAI TAN RUBBER 1/4 3/16 1/8 thick 1 lb box- $1475 Iidudss 4 oz Slick Lube $1375 Inolube kcoets$1751 10 lb box $11000 UPS Delivered Postpaid US via UPS Cal res add 8% sales tax Made USA Slow cure coossiatant qualIty Ask FAI-TAN 99/90 catalog llts 100FF kits CROCKIT HOOKS 140W MADE BYFAI SEND $150 Model Supply FOR CATALOGTORRANCE Ca 90550CARSOP CA 90145 TEL 2138309039 CS COMPETITION ENGINES CSG 049NORMAL BE ABC uc 28000 RPM JW CSGX 049 NORMAL BB ABC RC 28000 RPM CSG 049SPEED BB ABC UC 35000 RPM NEWCSGXO49SPEEDBBABCRC35OOORPM CSG 061NORMAL BB ABC UC 27000 RPM NEN CSGX 061NORMAL BB ABC RC 27000 RPM CSG 061SPEED BB ABC UC 35000 RPM NEW OSOX 061SPEED BE ABC RC 35000RPM CSG 09NORMAL BE ABC UC 27000 RPM NEW CSGX 09NORMAL BE ABC RC 27000 RPM CSG 09SPEED BE ABC UC 35000 RPM NEW CSGX 09SPEED BE ABC RC 35000 RPM CSG 11NORMAL BE ABC UC 27000 RPM NEW CSGX 11NORMAL BE ABC RC 27000 RPM CSG 15PBE SPORT UC 18000 RPM NEW CSGX ISP BE RC sPORT 18000 RPM CSG 15NORMAL BE ABC UC 27000RPM NEW CSGX 15NORMAL BE ABC RC 27000 RPM CSG 15SPEED BE ABC OR AAC UC 37000RPM NEW CSGX 15SPEED BE ABC OR AAC RC 37000 RPM CSG 15BE AAC UC COMBAT SPECIAL NEW CSGX 15BE AAC RC COMBAT SPECIAL NEW CSD 15SPORT DIESEL NEW CSDX 15BE MC TEAM RACE DIESEL WITR CARE CSG 21SPEED BE ABC UC 28000 RPM NEW CSGX 21SPEED BE ABC RC 28000 RPM CSG 21 NBE ABC RC MARINE 28000 RPM CSG 60BE ABC RC 18000 RPM CS1TUNED PIPE 049-061 09 add $200 C52TUNED PIPE 15-21-60 CSRSPEED PAN 049-061-09 CSWSPED PAN 15-21-60 CSHGLOW PLUG FOR CS ENGINES CSSTANDARD LONG GLOW PLUGS RACE 100 AFTER RUN OIL CIPOLLA 15 R/C WITH MUFFLER YOUNGSTER SPECIAL 049 UC GLOW CHECK OR MONEY ORDER SORRY NO CO D S SEND $600 FOR SHIPPING & HANDLING $375 FOR PARTS OR ACCESSORIES FLORIDA RESIDENTS ADD 6% SALES TAX OR JUST SAY CHARGE fl VISA MASTER CHARGE DISCOVER NEW Cs RIC Engines Choice 049-061-09-11 Only $ii999 Save Up $4901 CS UC Engines Choice 049-061-09-11 Only $9999 Save Up $4901 Engines Accessories Sale Great Savings Order Todayl $14200SAVE $4201 $16200SAVE $4201 $14900SAVE $4901 $16900SAVE $4901 $14200SAVE $4201 $18200SAVE $4201 $14600SAVE $4601 $16600SAVE $4601 $13700SAVE $3701 $15700SAVE $3701 $14200SAVE $4201 $16200SAVE $4201 $14000SAVE $4001 $16000SAVE $4001 $5500SAVE $525 $7500SAVE $525 $12900SAVE $1750 $14900SAVE $1750 $13900SAVE $1750 $15900SAVE $1750 $14500SAVE $1950 $16500SAVE $2001 $8500 $19400SAVE $2601 $13900SAVE $1701 $15900SAVE $1701 $16900SAVE $2701 $15500SAVE $1501 SPECIAL $9999 INTRO PRICE $11999 SPECIAL $9999 INTRO PRICE $11999 SPECIAL $9999 INTRO PRICE $11999 SPECIAL $9999 INTRO PRICE $11999 SPECIAL $9999 INTRO PRICE $11999 SPECIAL $9999 INTRO PRICE $11999 SPECIAL $9999 INTRO PRICE $11999 SALE $4975 INTRO PRICE $6975 SALE $11150 INTRO PRICE $13150 SALE $12150 INTRO PRICE $14150 SALE $12550 INTRO PRICE $14499 SALE $6999 SALE $16799 SALE $12199 INTRO PRICE $141 99 SALE $14199 SALE $13999 SALE $2775 SALE $3775 SALE $3675 SALE $4150 SALE $375 SALE $175 SALE $249 SPECIAL $5550 SALE $3499 SEND MAIL ORDERS TO OHS AERO ENGINES LTD 2914 BUCKLEY AVE LAKE WORTh FL 33461 FAX & PHONE 407 965-6150 FROM 6PM TO 9PM ORDER TODAY ALL ENGINES ACCESSORIES AtJfl PAPTAt APP IN STOCKI FaUST NAVE EXPIRATION — EXCLUSIVE Cs DISTRIBUTOR DEALER INQUIRIES INVITED B&P Associates Gives Total Flight Line FREEDOM battery needs call write B&P Associates PO Box 22054 WaCO TX 76702-2054 817662-5587 new electric starter battery pack cuts cord has always tied starter power panel Discover freedom being able start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field BREAKTHROUGH LIVE VIDEO TRANSMITTED FROM YOUR AIRCRAFT Now Can Mount An Airborne Micro Video Camera System Model Airplane Introduce SOS Model -Strap System 1st Ready Strap & Use System Plane Talk r/o accessoy shop Tech info 4-650-5004 Orders 800-795-5008 Po Box 11364 Costa Mesa CA 92627 Nothing Build Assemble No Airborne Receiver Interference No Vibration Problems No Inferior Rebuilt Equipment Total Weight 9oz Including Batteries 80 Seconds Stra onto Aircraft Teat Flown mall 85 ize Airplane We Personalize SOS Vent Name Printed l l April1994 111 , 1 Iectric Connector I Sermos Super Connector wIth Lifetime Guarantee $500 per packet 2 Sermos Super Charging Jack Lit athna Guarantee $550 PfT pacloet S Sermos Standard Connecter $400 per packet 4 Sermos Standard CJoarging Jack $450 per packet 5 Sermos Standard Aiming Switch $400 per packet 6 Sermos insefllon & Extraction Tool $8tt per tool MimimaT Order $i tOt PLUS $200 Icr ShippiTg Handehng OTly Eerlilied Checks Money Orders accepted paymeTt orders Olatrlbutore DeaIra InquIrIes Invited Please call 203 322-694 farther irforrnation S~1S R/C SNAP CONNECTORS INC Cedar Corntrs Stallts Rot 16787 Stamford CT 06905
Edition: Model Aviation - 1994/04
Page Numbers: 99, 100, 110, 111
FREE FLIGHT DURATION STAVING IN SIGHT last contest launched same thermal two other Wakefields other models similar color schemesred orange D-box white tissue covering rest wing model solid black underside difference amazing bright sun other two models hard pick up overhead black however really popped out have using black undersides wings several years now Im convinced easiest see model overhead fact started using black pylon rudder model could seen longer downwind problem model gets silhouetted against dark trees think Ill try white pylon next know thing wont use fancy multicolored covering job bottom solid dark color works much better Although top wing really important visibility standpoint during flight can very important lose model have aerial search situation white probably best choice perhaps touch fluorescent orange white upper surface will also have added benefit reflecting heat wing model sits out sun Tan II Two December column mentioned FAI Model Supplys new Tan II rubber As may recall new stuff seemed bit stretchier familiar Tan rubber word 40-gram Wakefield motor needed about 155 inches long 400 turns maximum older Tan motors need about 175 inches long same number turns week before regional Semifinals made up couple motors flight-test 155 inches long other usual 175inch length Well shorter motor felt great during winding 404 turns pow broke right winding hook safe side decided stay old reliable Tan never seems break Semifinals did bring along other Tan II motor however Tan worked fine first five rounds Saturday early-morning 2 10second round Sunday decided give Tan II another try 175-inch-long motor wound safely 474 turns about 105 inchounces torque about 80 turns typical Tan motors about 10 inchounces less torque burst bit less Tan II models solidbalsa wings didnt flutter quite much cruise looked better motor run about 10 seconds longer flatter torque curve would seem make Tan II good choice Mulvihill Coupe well non-auto Wakefields gentler burst would easier control need autosurfaces April 1994 99 New VIT fittings eastern Europe require small-diameter Ross Jahnke Baton Rouge LA flies Wakefields sheeted lines braided Spectra fishing line answer high-aspect-ratio wings carbon wing/stab mounts Bob Junks potent AD-powered F1J uses clear mylar covering Light smooth best choice visibility Don Chessons FiC model features V dihedral winglets interesting bunt mechanism see below Bunt system has central mounting plate fits inside fuselage pivoting plates power glide adjustments way carefully checked winding hook blown motor 10 power magnifying glass lot rough machining marks may have contributed breakage few minutes file emery board buffing wheel took care problem Carbon Castings Ross Jahnke has come up very simple easy way cast parts carbon fiber Instead machining reusable mold Ross makes out scrap balsa sheet cut glued up form cavity part packs mixture epoxy resin carbon fiber tow No mold release used Next covers top mold plastic tape clamps piece scrap plywood push down carbon-epoxy mixture After epoxy sets up Ross simply breaks away balsa leaving finished carbon part Sanding filing clean up rough edges Since balsa molds quick cheap make usually makes multiple molds casts extra parts Lighter Lines new Russian/Ukraineinspired Wakes use some very small parts especially back end weight important Andriukov VIT fitting example measures about long Needless say holes lines running back timer small usual line Cortland Micron 20# test fly line hacking just too big Ed Turner told eastern Europeans use thin 8# 12# test monofilament line thought using monofilament just too scary An article local newspaper early last summer mentioned new braided Kevlar fishing line sounded promising Unfortunately line short supply never could find did come across braided Spectra line called Versitex bought 35# test line lightest could find about half diameter Micron braided Dacron line weight slightly 12# monofilament feel much comfortable using new braided stuff should able find Versitex line sporting goods stores write Versitex America Ltd Spring City PA 19475 Easier Bunting Most bunt mechanisms Ive seen power models look pretty complicated Don Chesson Baton Rouge showed simple system made Ray Harlan Hardy Brodersen-designed Koko FlC model Although Dons example nicely machined mechanism could easily made using hand tools drill press consists central plate 1/s-inch Delrin sheet familiar Delrin very easy-to-machine plastic plate fits carbon fiber fuselage tube Four screws hold place central cutout saves bit weight acts guide tube takes stab pull-down line through 900 bend stitched place soft wire running through series holes Delrin plate rear unit small rectangular blocks Deirin mounted either side single pivot screw blocks spring-loaded rear using two safety pin-type springs Lines running timer pull blocks forward launch stab pulled down until hits power adjustment screw top block bunt line holding left block forward released timer pivots back out way stab pulled down against bunt adjustment screw top center plate Next timer releases line stab moves up against glide adjust screw Early versions used needle valve finer adjustment later version uses Delrin block adjustment screw DT right block pivots back timer releases line Sympo 26 Twenty-Sixth Annual National Free Flight Society Symposium out Actually has out since Nats last September As usual Sympo offers rich blend technical articles down-to-earth pieces particular interest series short technical articles originally appeared NFFS Digest back early 1970s Andrew Bauer continues series computer-simulated flights time exploring bunt FlA gliders Interesting stuff never has chase flight Ten Models Year selection includes Pierre Bruns Nordic Dan Tracys Wakefield Doug Joyces FlC model yes canard international category Marvin Mace takes Large AMA Gas honors Bruce Augustus FlJ getting Small Gas award Bud Romaks Mulvihill picked Large Rubber model year John ODwyers Winter Hawk Coupe won Small Rubber category Plans Winter Hawk available through Model Aviation plan number 646 Other awards include Walt Van Gorder Easy B Don Srull Electric-powered ducted-fan Russian jet Jim Walston received special award Walston Retrieval System get very own copy Sympo write Fred Terzian NFFS Publications Director 4858 Moorpark Ave San Jose CA 95129 Cost $20 NFFS members $24 nonmembers Shipping extra sure ask about other publications available NFFS Gotchas originally planned compile list of things can go wrong free flight would require least whole magazine Instead lets focus conventional pop-up-stabilizer DT system what can go wrong model DT tail must pop up means rubber bands hold stab must strong enough tilt stab up proper time Recycling may great beer cans newspapers rubber bands Use new fresh rubber bands flying session Sometimes day out sun enough weaken band doesnt pull stab way up lost two models few years back related problem rubber bands holding down front stab fresh Shocer-type mount used pinched rubber bands pulling stab mount back hook stab Widening slots stab mount allowed full length band pull also started running band through slots stab mount act forward stop running second rubber band around front stab mount bit leverage fuse DT generally reliable terribly accurate fact have never DT fuse fail work have short-fused number times long-fused woods once twice last time lost model longfusing some very dense woods run out fuse during contest mistake number borrowed some last round didnt take time bum sample new fuse check timing mistake number two just before launched decided pull fuse out another notch wouldnt short-fuse mistake number three course model boomed out big thermal DTd about minute later should have ended up woods fuse simply fails out model Usually caused using too short piece fuse needs run well up snuffer tube snuffer tube actually holding fusenot DT rubber band snuffer tube should matched size fuse minimum room fuse rattle around Continued page 110 100 Model Aviation y bunt mechanism used needle valve glide adjustment screw now used precise settings C CItE 31 Light Stone RAF RCAF Sand Yellow- Germany Tan USAAF FS#20400 CItE 32 Middlestone- USAAF Tan Japan Mid Stone RAP F1CAF FS#30266 CItE 33 Dark Earth- LJSAAF RAP RCAF P5130116 CItE 34 Lt Blue Germany P5126329 CItE 35 Azure Blue USAAF RAP ACAF Germany P5135231 CItE 35 Grey Japan P5136492 CItE 37 Extra Dark Sea Grey RAP RCAF Neetral Grey USAAP P5136118 CItE 38 Light Slate Grey RAP ACAP Green Grey- Germany P5134159 CItE 39 Dark Slate Grey RAP RCAF Army Green Japan P5134098 Perfect Paint high quality part fuel proof paint combines conveni ence superb results Perfect Paint will cover dopes epoxies metals fiberglass plastic smooth hardthat will crack chip CItE 40 Ok Green & Extra Dk Sea Green RAP RCAF Dark Green Germany P5134079 CItE 41 Navy Green Japan PS#34058 CItE 42 Olive Drab USAAP 595 Original P5134087 CItE 43 Dead Flat Clear 0% gloss CItE 44 Sea Blue Semi-Glass USNI PSI 25042 CItE 45 Intermediate Blue Semi-Glans USN P5135164 CItE 46 Duck Egg Blue Germany RAP P5134516 CItE 47 Zinc Chromate Type #1 USAAF USN RAP RCAF P5134 151 CItE 48 Zinc Chromate Type #2 USAAP USN P5133814 CHE49 Olive Drab USAAF 595-A Modern P5134087 CItE 50 Roandel Red RAP RCAP Roundel Red Japan P5130111 CItE 51 Sky USAAE USN Sky TypeS- RAP RCAP P5134424 mar resistant finish CItE 52 Insignia Blue USAAF USN Reundel Blue RAP RCAP Dark Blue Germany P5135044 CItE 53 Dark Grey USAAF P5135237 CItE 54 Ocean Grey RAP RCAF P5136178 CItE 55 Dark Gull Grey USAAP USN P5136231 CItE 56 Dark Sea Grey RAP RCAP P5136270 CItE 57 Sea Grey Medium RAP RCAP PSI36373 CHE 58 Medium Grey USMP PSI 38375 CItE 50 Light Grey USAAP USNI Light Gull Grey USAAP USN USMC Cockpit Interior Grey USAP USN USMC Grey Italy P5036440 CHESS Light Grey USMP F5136495 FF Durationljoyner Continued page 100 Remember snuffer tubes very important reason Grass fires can deadly Some power fliers have problems fuse DTs large power models Evidently what happens vibration shakes out glowing cotton center part fuse best cure make sure entire end fuse including outer woven covering burning before launch technique light end fuse allow itto burn 15 30 seconds gently put fuse out Set length start engine light fuse preburned end will catch quickly burn evenly Clockwork timers allow much accurate DT remember start before launch timer start switch must work time Most time just isnt good enough unless like build models switch should positioned falls naturally under fingers hold model release seems work best put start switch right side pylon just above motor tube several commercial start switches around number homemade ones Just make sure works time like test start switch least 50 times make sure no problems helps timer runs must remember fully wind timer before flight try wind set timer well before start round can concentrate getting set exactly binocular magnifier big help making sure correct slot scroll Volumes could written keeping timers clean properly lubricated Ill just say lot easier pull timer clean put back model build whole new model Remember too timer compartment must clean free dust Join squadron Brand new squadron markings. Available 1/8 1/6 & 1/4 scales Sefd 39it6wckae Theres always something new major decals orkssquadron insignias NORTHEAST SCREEN GRAPHIcS 21 FISHER AVE EAST LONOMEADOW MA eieg TEL 413-525-4t1e FAX 413-525-3164 PRODUCTS FoR rue Complete Line Exhaust Systems * Tuned Pipes Muffled Tuned Pipes Headers uri Mufflers Expansion Mufflers Helicopter Ball Mufflers ialized Exhaust Systems Unsupassd Wnk,~hin h Prfomance 110 Model Aviation CHARTS AVAILABLE II IIUU.j. UUUL PO Box 2480 Sandusky OhIo 44870 Phone & Fax 419-797-2208 like put couple coats clear dope compartment seal balsa rubber models Check timer DT operation before go out test fly Its lot easier fix problems home field Make sure DT line will snag part model example have Wakefield uses two nylon screws hold down trailing edge wing screws extend about 3/ inch below bottom wing guess what DT line will snag screw tried mak it wouldnt time have forgotten trim nylon screw flush bottom wing model has f4iled DT Luckily have not-thermal flights have similar problem Seelig timers winding ky DT scroll can catch DT arm Jock up timer wont turn arm cant swing way back DT line never releases carefully follow instructions Doug Galbreath includes Seeligs sells wont happen can have done remove winding key weighs about gram use modified screwdriver wind timer Remember just mistakes Ive made witnessed lot gotchas waiting out careful FAI TAN RUBBER 1/4 3/16 1/8 thick 1 lb box- $1475 Iidudss 4 oz Slick Lube $1375 Inolube kcoets$1751 10 lb box $11000 UPS Delivered Postpaid US via UPS Cal res add 8% sales tax Made USA Slow cure coossiatant qualIty Ask FAI-TAN 99/90 catalog llts 100FF kits CROCKIT HOOKS 140W MADE BYFAI SEND $150 Model Supply FOR CATALOGTORRANCE Ca 90550CARSOP CA 90145 TEL 2138309039 CS COMPETITION ENGINES CSG 049NORMAL BE ABC uc 28000 RPM JW CSGX 049 NORMAL BB ABC RC 28000 RPM CSG 049SPEED BB ABC UC 35000 RPM NEWCSGXO49SPEEDBBABCRC35OOORPM CSG 061NORMAL BB ABC UC 27000 RPM NEN CSGX 061NORMAL BB ABC RC 27000 RPM CSG 061SPEED BB ABC UC 35000 RPM NEW OSOX 061SPEED BE ABC RC 35000RPM CSG 09NORMAL BE ABC UC 27000 RPM NEW CSGX 09NORMAL BE ABC RC 27000 RPM CSG 09SPEED BE ABC UC 35000 RPM NEW CSGX 09SPEED BE ABC RC 35000 RPM CSG 11NORMAL BE ABC UC 27000 RPM NEW CSGX 11NORMAL BE ABC RC 27000 RPM CSG 15PBE SPORT UC 18000 RPM NEW CSGX ISP BE RC sPORT 18000 RPM CSG 15NORMAL BE ABC UC 27000RPM NEW CSGX 15NORMAL BE ABC RC 27000 RPM CSG 15SPEED BE ABC OR AAC UC 37000RPM NEW CSGX 15SPEED BE ABC OR AAC RC 37000 RPM CSG 15BE AAC UC COMBAT SPECIAL NEW CSGX 15BE AAC RC COMBAT SPECIAL NEW CSD 15SPORT DIESEL NEW CSDX 15BE MC TEAM RACE DIESEL WITR CARE CSG 21SPEED BE ABC UC 28000 RPM NEW CSGX 21SPEED BE ABC RC 28000 RPM CSG 21 NBE ABC RC MARINE 28000 RPM CSG 60BE ABC RC 18000 RPM CS1TUNED PIPE 049-061 09 add $200 C52TUNED PIPE 15-21-60 CSRSPEED PAN 049-061-09 CSWSPED PAN 15-21-60 CSHGLOW PLUG FOR CS ENGINES CSSTANDARD LONG GLOW PLUGS RACE 100 AFTER RUN OIL CIPOLLA 15 R/C WITH MUFFLER YOUNGSTER SPECIAL 049 UC GLOW CHECK OR MONEY ORDER SORRY NO CO D S SEND $600 FOR SHIPPING & HANDLING $375 FOR PARTS OR ACCESSORIES FLORIDA RESIDENTS ADD 6% SALES TAX OR JUST SAY CHARGE fl VISA MASTER CHARGE DISCOVER NEW Cs RIC Engines Choice 049-061-09-11 Only $ii999 Save Up $4901 CS UC Engines Choice 049-061-09-11 Only $9999 Save Up $4901 Engines Accessories Sale Great Savings Order Todayl $14200SAVE $4201 $16200SAVE $4201 $14900SAVE $4901 $16900SAVE $4901 $14200SAVE $4201 $18200SAVE $4201 $14600SAVE $4601 $16600SAVE $4601 $13700SAVE $3701 $15700SAVE $3701 $14200SAVE $4201 $16200SAVE $4201 $14000SAVE $4001 $16000SAVE $4001 $5500SAVE $525 $7500SAVE $525 $12900SAVE $1750 $14900SAVE $1750 $13900SAVE $1750 $15900SAVE $1750 $14500SAVE $1950 $16500SAVE $2001 $8500 $19400SAVE $2601 $13900SAVE $1701 $15900SAVE $1701 $16900SAVE $2701 $15500SAVE $1501 SPECIAL $9999 INTRO PRICE $11999 SPECIAL $9999 INTRO PRICE $11999 SPECIAL $9999 INTRO PRICE $11999 SPECIAL $9999 INTRO PRICE $11999 SPECIAL $9999 INTRO PRICE $11999 SPECIAL $9999 INTRO PRICE $11999 SPECIAL $9999 INTRO PRICE $11999 SALE $4975 INTRO PRICE $6975 SALE $11150 INTRO PRICE $13150 SALE $12150 INTRO PRICE $14150 SALE $12550 INTRO PRICE $14499 SALE $6999 SALE $16799 SALE $12199 INTRO PRICE $141 99 SALE $14199 SALE $13999 SALE $2775 SALE $3775 SALE $3675 SALE $4150 SALE $375 SALE $175 SALE $249 SPECIAL $5550 SALE $3499 SEND MAIL ORDERS TO OHS AERO ENGINES LTD 2914 BUCKLEY AVE LAKE WORTh FL 33461 FAX & PHONE 407 965-6150 FROM 6PM TO 9PM ORDER TODAY ALL ENGINES ACCESSORIES AtJfl PAPTAt APP IN STOCKI FaUST NAVE EXPIRATION — EXCLUSIVE Cs DISTRIBUTOR DEALER INQUIRIES INVITED B&P Associates Gives Total Flight Line FREEDOM battery needs call write B&P Associates PO Box 22054 WaCO TX 76702-2054 817662-5587 new electric starter battery pack cuts cord has always tied starter power panel Discover freedom being able start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field BREAKTHROUGH LIVE VIDEO TRANSMITTED FROM YOUR AIRCRAFT Now Can Mount An Airborne Micro Video Camera System Model Airplane Introduce SOS Model -Strap System 1st Ready Strap & Use System Plane Talk r/o accessoy shop Tech info 4-650-5004 Orders 800-795-5008 Po Box 11364 Costa Mesa CA 92627 Nothing Build Assemble No Airborne Receiver Interference No Vibration Problems No Inferior Rebuilt Equipment Total Weight 9oz Including Batteries 80 Seconds Stra onto Aircraft Teat Flown mall 85 ize Airplane We Personalize SOS Vent Name Printed l l April1994 111 , 1 Iectric Connector I Sermos Super Connector wIth Lifetime Guarantee $500 per packet 2 Sermos Super Charging Jack Lit athna Guarantee $550 PfT pacloet S Sermos Standard Connecter $400 per packet 4 Sermos Standard CJoarging Jack $450 per packet 5 Sermos Standard Aiming Switch $400 per packet 6 Sermos insefllon & Extraction Tool $8tt per tool MimimaT Order $i tOt PLUS $200 Icr ShippiTg Handehng OTly Eerlilied Checks Money Orders accepted paymeTt orders Olatrlbutore DeaIra InquIrIes Invited Please call 203 322-694 farther irforrnation S~1S R/C SNAP CONNECTORS INC Cedar Corntrs Stallts Rot 16787 Stamford CT 06905
Edition: Model Aviation - 1994/04
Page Numbers: 99, 100, 110, 111
FREE FLIGHT DURATION STAVING IN SIGHT last contest launched same thermal two other Wakefields other models similar color schemesred orange D-box white tissue covering rest wing model solid black underside difference amazing bright sun other two models hard pick up overhead black however really popped out have using black undersides wings several years now Im convinced easiest see model overhead fact started using black pylon rudder model could seen longer downwind problem model gets silhouetted against dark trees think Ill try white pylon next know thing wont use fancy multicolored covering job bottom solid dark color works much better Although top wing really important visibility standpoint during flight can very important lose model have aerial search situation white probably best choice perhaps touch fluorescent orange white upper surface will also have added benefit reflecting heat wing model sits out sun Tan II Two December column mentioned FAI Model Supplys new Tan II rubber As may recall new stuff seemed bit stretchier familiar Tan rubber word 40-gram Wakefield motor needed about 155 inches long 400 turns maximum older Tan motors need about 175 inches long same number turns week before regional Semifinals made up couple motors flight-test 155 inches long other usual 175inch length Well shorter motor felt great during winding 404 turns pow broke right winding hook safe side decided stay old reliable Tan never seems break Semifinals did bring along other Tan II motor however Tan worked fine first five rounds Saturday early-morning 2 10second round Sunday decided give Tan II another try 175-inch-long motor wound safely 474 turns about 105 inchounces torque about 80 turns typical Tan motors about 10 inchounces less torque burst bit less Tan II models solidbalsa wings didnt flutter quite much cruise looked better motor run about 10 seconds longer flatter torque curve would seem make Tan II good choice Mulvihill Coupe well non-auto Wakefields gentler burst would easier control need autosurfaces April 1994 99 New VIT fittings eastern Europe require small-diameter Ross Jahnke Baton Rouge LA flies Wakefields sheeted lines braided Spectra fishing line answer high-aspect-ratio wings carbon wing/stab mounts Bob Junks potent AD-powered F1J uses clear mylar covering Light smooth best choice visibility Don Chessons FiC model features V dihedral winglets interesting bunt mechanism see below Bunt system has central mounting plate fits inside fuselage pivoting plates power glide adjustments way carefully checked winding hook blown motor 10 power magnifying glass lot rough machining marks may have contributed breakage few minutes file emery board buffing wheel took care problem Carbon Castings Ross Jahnke has come up very simple easy way cast parts carbon fiber Instead machining reusable mold Ross makes out scrap balsa sheet cut glued up form cavity part packs mixture epoxy resin carbon fiber tow No mold release used Next covers top mold plastic tape clamps piece scrap plywood push down carbon-epoxy mixture After epoxy sets up Ross simply breaks away balsa leaving finished carbon part Sanding filing clean up rough edges Since balsa molds quick cheap make usually makes multiple molds casts extra parts Lighter Lines new Russian/Ukraineinspired Wakes use some very small parts especially back end weight important Andriukov VIT fitting example measures about long Needless say holes lines running back timer small usual line Cortland Micron 20# test fly line hacking just too big Ed Turner told eastern Europeans use thin 8# 12# test monofilament line thought using monofilament just too scary An article local newspaper early last summer mentioned new braided Kevlar fishing line sounded promising Unfortunately line short supply never could find did come across braided Spectra line called Versitex bought 35# test line lightest could find about half diameter Micron braided Dacron line weight slightly 12# monofilament feel much comfortable using new braided stuff should able find Versitex line sporting goods stores write Versitex America Ltd Spring City PA 19475 Easier Bunting Most bunt mechanisms Ive seen power models look pretty complicated Don Chesson Baton Rouge showed simple system made Ray Harlan Hardy Brodersen-designed Koko FlC model Although Dons example nicely machined mechanism could easily made using hand tools drill press consists central plate 1/s-inch Delrin sheet familiar Delrin very easy-to-machine plastic plate fits carbon fiber fuselage tube Four screws hold place central cutout saves bit weight acts guide tube takes stab pull-down line through 900 bend stitched place soft wire running through series holes Delrin plate rear unit small rectangular blocks Deirin mounted either side single pivot screw blocks spring-loaded rear using two safety pin-type springs Lines running timer pull blocks forward launch stab pulled down until hits power adjustment screw top block bunt line holding left block forward released timer pivots back out way stab pulled down against bunt adjustment screw top center plate Next timer releases line stab moves up against glide adjust screw Early versions used needle valve finer adjustment later version uses Delrin block adjustment screw DT right block pivots back timer releases line Sympo 26 Twenty-Sixth Annual National Free Flight Society Symposium out Actually has out since Nats last September As usual Sympo offers rich blend technical articles down-to-earth pieces particular interest series short technical articles originally appeared NFFS Digest back early 1970s Andrew Bauer continues series computer-simulated flights time exploring bunt FlA gliders Interesting stuff never has chase flight Ten Models Year selection includes Pierre Bruns Nordic Dan Tracys Wakefield Doug Joyces FlC model yes canard international category Marvin Mace takes Large AMA Gas honors Bruce Augustus FlJ getting Small Gas award Bud Romaks Mulvihill picked Large Rubber model year John ODwyers Winter Hawk Coupe won Small Rubber category Plans Winter Hawk available through Model Aviation plan number 646 Other awards include Walt Van Gorder Easy B Don Srull Electric-powered ducted-fan Russian jet Jim Walston received special award Walston Retrieval System get very own copy Sympo write Fred Terzian NFFS Publications Director 4858 Moorpark Ave San Jose CA 95129 Cost $20 NFFS members $24 nonmembers Shipping extra sure ask about other publications available NFFS Gotchas originally planned compile list of things can go wrong free flight would require least whole magazine Instead lets focus conventional pop-up-stabilizer DT system what can go wrong model DT tail must pop up means rubber bands hold stab must strong enough tilt stab up proper time Recycling may great beer cans newspapers rubber bands Use new fresh rubber bands flying session Sometimes day out sun enough weaken band doesnt pull stab way up lost two models few years back related problem rubber bands holding down front stab fresh Shocer-type mount used pinched rubber bands pulling stab mount back hook stab Widening slots stab mount allowed full length band pull also started running band through slots stab mount act forward stop running second rubber band around front stab mount bit leverage fuse DT generally reliable terribly accurate fact have never DT fuse fail work have short-fused number times long-fused woods once twice last time lost model longfusing some very dense woods run out fuse during contest mistake number borrowed some last round didnt take time bum sample new fuse check timing mistake number two just before launched decided pull fuse out another notch wouldnt short-fuse mistake number three course model boomed out big thermal DTd about minute later should have ended up woods fuse simply fails out model Usually caused using too short piece fuse needs run well up snuffer tube snuffer tube actually holding fusenot DT rubber band snuffer tube should matched size fuse minimum room fuse rattle around Continued page 110 100 Model Aviation y bunt mechanism used needle valve glide adjustment screw now used precise settings C CItE 31 Light Stone RAF RCAF Sand Yellow- Germany Tan USAAF FS#20400 CItE 32 Middlestone- USAAF Tan Japan Mid Stone RAP F1CAF FS#30266 CItE 33 Dark Earth- LJSAAF RAP RCAF P5130116 CItE 34 Lt Blue Germany P5126329 CItE 35 Azure Blue USAAF RAP ACAF Germany P5135231 CItE 35 Grey Japan P5136492 CItE 37 Extra Dark Sea Grey RAP RCAF Neetral Grey USAAP P5136118 CItE 38 Light Slate Grey RAP ACAP Green Grey- Germany P5134159 CItE 39 Dark Slate Grey RAP RCAF Army Green Japan P5134098 Perfect Paint high quality part fuel proof paint combines conveni ence superb results Perfect Paint will cover dopes epoxies metals fiberglass plastic smooth hardthat will crack chip CItE 40 Ok Green & Extra Dk Sea Green RAP RCAF Dark Green Germany P5134079 CItE 41 Navy Green Japan PS#34058 CItE 42 Olive Drab USAAP 595 Original P5134087 CItE 43 Dead Flat Clear 0% gloss CItE 44 Sea Blue Semi-Glass USNI PSI 25042 CItE 45 Intermediate Blue Semi-Glans USN P5135164 CItE 46 Duck Egg Blue Germany RAP P5134516 CItE 47 Zinc Chromate Type #1 USAAF USN RAP RCAF P5134 151 CItE 48 Zinc Chromate Type #2 USAAP USN P5133814 CHE49 Olive Drab USAAF 595-A Modern P5134087 CItE 50 Roandel Red RAP RCAP Roundel Red Japan P5130111 CItE 51 Sky USAAE USN Sky TypeS- RAP RCAP P5134424 mar resistant finish CItE 52 Insignia Blue USAAF USN Reundel Blue RAP RCAP Dark Blue Germany P5135044 CItE 53 Dark Grey USAAF P5135237 CItE 54 Ocean Grey RAP RCAF P5136178 CItE 55 Dark Gull Grey USAAP USN P5136231 CItE 56 Dark Sea Grey RAP RCAP P5136270 CItE 57 Sea Grey Medium RAP RCAP PSI36373 CHE 58 Medium Grey USMP PSI 38375 CItE 50 Light Grey USAAP USNI Light Gull Grey USAAP USN USMC Cockpit Interior Grey USAP USN USMC Grey Italy P5036440 CHESS Light Grey USMP F5136495 FF Durationljoyner Continued page 100 Remember snuffer tubes very important reason Grass fires can deadly Some power fliers have problems fuse DTs large power models Evidently what happens vibration shakes out glowing cotton center part fuse best cure make sure entire end fuse including outer woven covering burning before launch technique light end fuse allow itto burn 15 30 seconds gently put fuse out Set length start engine light fuse preburned end will catch quickly burn evenly Clockwork timers allow much accurate DT remember start before launch timer start switch must work time Most time just isnt good enough unless like build models switch should positioned falls naturally under fingers hold model release seems work best put start switch right side pylon just above motor tube several commercial start switches around number homemade ones Just make sure works time like test start switch least 50 times make sure no problems helps timer runs must remember fully wind timer before flight try wind set timer well before start round can concentrate getting set exactly binocular magnifier big help making sure correct slot scroll Volumes could written keeping timers clean properly lubricated Ill just say lot easier pull timer clean put back model build whole new model Remember too timer compartment must clean free dust Join squadron Brand new squadron markings. Available 1/8 1/6 & 1/4 scales Sefd 39it6wckae Theres always something new major decals orkssquadron insignias NORTHEAST SCREEN GRAPHIcS 21 FISHER AVE EAST LONOMEADOW MA eieg TEL 413-525-4t1e FAX 413-525-3164 PRODUCTS FoR rue Complete Line Exhaust Systems * Tuned Pipes Muffled Tuned Pipes Headers uri Mufflers Expansion Mufflers Helicopter Ball Mufflers ialized Exhaust Systems Unsupassd Wnk,~hin h Prfomance 110 Model Aviation CHARTS AVAILABLE II IIUU.j. UUUL PO Box 2480 Sandusky OhIo 44870 Phone & Fax 419-797-2208 like put couple coats clear dope compartment seal balsa rubber models Check timer DT operation before go out test fly Its lot easier fix problems home field Make sure DT line will snag part model example have Wakefield uses two nylon screws hold down trailing edge wing screws extend about 3/ inch below bottom wing guess what DT line will snag screw tried mak it wouldnt time have forgotten trim nylon screw flush bottom wing model has f4iled DT Luckily have not-thermal flights have similar problem Seelig timers winding ky DT scroll can catch DT arm Jock up timer wont turn arm cant swing way back DT line never releases carefully follow instructions Doug Galbreath includes Seeligs sells wont happen can have done remove winding key weighs about gram use modified screwdriver wind timer Remember just mistakes Ive made witnessed lot gotchas waiting out careful FAI TAN RUBBER 1/4 3/16 1/8 thick 1 lb box- $1475 Iidudss 4 oz Slick Lube 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6PM TO 9PM ORDER TODAY ALL ENGINES ACCESSORIES AtJfl PAPTAt APP IN STOCKI FaUST NAVE EXPIRATION — EXCLUSIVE Cs DISTRIBUTOR DEALER INQUIRIES INVITED B&P Associates Gives Total Flight Line FREEDOM battery needs call write B&P Associates PO Box 22054 WaCO TX 76702-2054 817662-5587 new electric starter battery pack cuts cord has always tied starter power panel Discover freedom being able start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field BREAKTHROUGH LIVE VIDEO TRANSMITTED FROM YOUR AIRCRAFT Now Can Mount An Airborne Micro Video Camera System Model Airplane Introduce SOS Model -Strap System 1st Ready Strap & Use System Plane Talk r/o accessoy shop Tech info 4-650-5004 Orders 800-795-5008 Po Box 11364 Costa Mesa CA 92627 Nothing Build Assemble No Airborne Receiver Interference No 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