NUMBER FOUR Bill Hannan has pub lished another very well done Peanuts & Pistachios series seems get bet ter Volume four has 18 pages contains usual mix photos plans letters over world non-Scale person like myself minibooks make enjoyable reading certainly easy relate motto front cover Inspiration builders small Scale flying models Get copy sending $550 plus $150 postage handling Hannans Runway PO Box Escondido CA 92025 Reader feedback Ralph Turner Avon OH notes another source forms socalled jug props PVC pipe sizes used plumbers comments have heard anyone else using PVC pipe have done considerable work method highly successful drawback have much latitude choice ra dius sizes suitable use available locally four-inch six-inch inside diameter ID wall thickness around radii 2 3 respec tively PVC pipe can obtained plumbing suppliers suggest looking plumber does sewer drain work Ask small left over piece jobs 12-in-long piece enough plumbers will happy assist PVC can easily cut saw can make desirable length procedure making prop blades roughly similar traditional methodswet blade stock lay directly pipe correct angle cover piece typing pa per strap down masking tape next step new anyway place pipe SWELd 51d - 4ff40J *41 nhi eov vorrrr TAP5 JAM 5A6 4e 4ey e cpr *pjtr -rv 4 AtA c/r 0f6/A4 616 E40J 84Od 15 Fabrication ROG wheels easier Jim Jones wayseveral wheels once Using Jims method can make some very light strong wheels satisfying results blades attached microwave oven zap few minutes oven takes four minutes full power time will vary different ovens let whole assem bly cool room temperature before removing blades pipe should careful removing pipe oven since will very hot safer let assembly cool oven am convinced better procedure using regular oven because way microwaves work through wood interior well outer layer believe causes change structure permanent Another use 0-rings have extolled vir tues using 0-rings Indoor motors several times before Aside convenience hand ling motor 0-rings both ends allows know precisely turns torque avail able launch time major problem com petitive Pennyplanes 10-in motor stick isnt long enough handle long heavy mo tors required top times As result bunching hung knots other problems plague seri ous PP flier Braided motors Unlimited Outdoor Rubber models now called Mulvihill class similar problems some fliers used braided motors braided motor has prewound loosely motor tends twist around itself Out turns prevented unwound motors Continued page 160 July 1989 75 Free Flight Indoor Bud Tenny Box 545 Richardson TX 75080 Senior HOG model rebornMark Sextons replica 1929 model wins 1989 contest doc umentation required win 243 flight added Marks score Ed Lamb Photo 40/4 70 5O/t- s-P/e4 4-ZIP s-o4r dIzq 7-ep e-5 rueVS 0-rings can sliced tubing such RC pushrods slotted block will help keep consistent cut very good idea Bud braided motor can definite advantage during competition built using 0-rings MINI-ELECTRIC QUIET ANT START STEMSCHJrERIES [v32][b-1-10-1-10]]$2495EFC-5001B5 Props Charge Cord andLaw cost Quick Charttht Batteries Reqattns spacers etc4 D type hoonries FC-402 Ideal tar FLIGHT BATTERIES $3295B-62 HY-7t 2w 50 mA-Hr $ 995 attery St-5 SwitchB-63 HY70 3w 50 mA-fir 1295 tractieno B-33L HY42 3 e tOO mA-Hr B-34L HY42 4x itt mA-Hr B-13L IHY42 3w iBO mA-Hr rains1295 424w iBO mA-Hr 45 grams1595 Q40W5 ACfl ,flu . en1905 including all-important graph models used illustrate graph mostly designs Fifties Nostalgia era same laws physics applied 1940 earlier think Rubber models may best flown just bit stable direction 5%-l0% Gas models shown Anyway once understand article simple calculations needed find models location graph can establish safe CG posi tion remains perhaps find optimum CG field trials errors method does work article helps understand Scale model tiny stab must have CG forward 30%-of-wing-chord location fly success fully Civy Boy could fly CU aft wings trailing edge Returning Hi-Ho story Sal later told CG position gave him helpful model flew well Ed Lidgard wrote later telling impressed Sals tech nique finding optimum CU said Sal puts small bolt tail adds sub tracts washers to make small CU changes moves CU aft retrims model until performance gets worse instead better moves CU forward again until per formance suffers point just between two extremes best position Most us satisfied whatever CU have model flyable Sal beats us time RC folk will say large pitch trim change experience between power power Off can reduced moving CU aftbut too far gives model overly sensitive elevator movement will pay op timize CU location ease flying less pitch trim change because glide will improve may want CU bit ahead posi tion Free Flight will get somewhat bet ter control response too far forward will hurt glide increasing drag due Up trim model has have whether realize counter nose-heavy condition am looking two Hand-Launched Glider plans design used Ray Mathews FUBAR fame called FUGAN other kit Testors late Forties no other name Contest Hand-Launched Glider something like some what similar current Campbells Thermal Piglet HLU Ill appreciate leads and/or copies plans Ill make same available theyre ob tained Speaking Campbells Custom Kits has new catalog Out send him couple bucks get yours lists modern Old-Timer Nostalgia era kits good source Free Flight supplies timers winding hooks Zaic yearbooksgood stuff need Lee wife run business manufacture kits quality folks business address PO Box 5996 Lake Worth FL 33466-5996 Recent additions Campbells line would interest Old-Timer fliers Earl Stahls Gypsy Rubber cabin ship similar better-known Korda Wakefield SAM-legal Hand-Launched Glider called Vartanian also various kits formerly made Fresno Easy Built including 1939 Cana dian Wakefield should competitive Scientific Miss Worlds Fair likely competitive sure pretty attended club meeting SAM 56 Wichita KS gave little slide show photos took 1988 SAM Champs wellreceived presentation would willing try something like other clubs trans portation other costs can arranged SAM chapter Tahiti FF Indoor/Tenny Continued page 75 drooping puddle nose tail shifting models balance case Pennyplane braiding seems reduce mation knots hang up side fuselage prevent section motor unwinding So what about 0-rings photos shows both ends braided motor Note motor consists four strands Actually very long loop doubled back both ends rear hook Integrating 0-rings motor requires four hands doing fol lowing 1 Begin strip rubber about three inches longer four times length required motor weighing what fin ished motor needs weigh means 160 Model Aviation MINI POWER AT ITS BEST LIGHT WEIGHT K CHARGE MOTOPROPSPRO HY70$1495VI-ill 7 1 gear ratio trgage disengage Freeloclades HY-7t BB Wheeling 10 grams acladed soaps note meterConnecter sod Access HY-lOR -111R Same HY-70 wittSame VL-ltl Disconnects Slide BathTa oubstitate B H Y-70 H VL-192 HY-42 Includes HY42 Motor P1 Improved sersion HY-48 AppiCharBe Plag Cord Acci $1795 der 7 leads I3aick 1 Motor 30 size models sias 02 tuel esgine $2795 $3795 Remote Battery HolderVL Flight Battery aba ye add $300Field ban FF Old-Timers/Baker Continued page 74 Modelers Choice OMP EPOXIES High Quality Model Construction Jr Kwk Set 6 Minute5 02 $ 695 Kwik Set 6 Minute10 02 $1095 Giant Kwk Set 6 Minute16 02 $1495 Half FastlOMinute100Z$ 995 OMP AIRCRAFT INSTRUMENTS 80in3116114318l/2$ 179 40in3/4andoneinch$ 179 EASY OFF PULLER proper tool removing drive washeraLand flywheels $ 795 Gas Model Products 8773 Russet Dr Cincinnati OH 45239 dealer call 513-385-7398 order direct add $150 postage / / A-J INTERCEPTOR IRTF $750 $595 NO TE PLEASE ADS EL OH fOE POSTAGE * HANDLING FIRST THREE MODELS ODD TEN PERCENT OE PETHE TOE EACH ALOTTIONAL Aw0iJ AIRCRAFT COMPANY RO Box 68132 Portland OR 97268 see Dealer Add Dollar No 30a i/a Scale s59~ REIAHEE le s6~ U mI7U ml IIei s section area rubber half two-strand motor same weight length 2 Slide 0-ring middle strip put loose ends together second pair hands 3 Slide second 0-ring over both ends center doubled strip 4 Hook winder first 0-ring put enough turns two strands loosely twisted along entire length 5 Taking care avoid losing turns un hook winder end hang second 0-ring 6 Thread two loose ends through top 0-ring tie ends using whatever knot like 7 When weight removed motor will twist around itself becoming much shorter process 8 Lube motor thoroughly put under moderate tension Continue work lube stroking get same tension four strands 9 Use motor just like motor equivalent cross section winding equal number turns setting launch torque appropriate conditions Comments The braided motor has unusual advantagea broken strand doesnt stop flight have happen once braids capture loose ends right break theoretical advantage discounted strands nearly square As result according theory motor strands stressed uniformly strand rectangular cross section twisted tightly around similar strand would rectangu lar configuration edges stressed FLEX-MOUNT 40 Accepts Front-tntake 25 to50 Engines tocludes necessary mounting hardware center down side braided motors comes evident comes shortening motor its hassle equalizing length strands Making 0-rings Another photo shows build 0-rings shown previous source material RC pushrod plastic tubing 0-rings simply sliced off tubing single-edge razor blade grooved block shown used hold tubing guide blade make parallel cuts Vary thickness ring suit rubber size fun models Actually models should fun sometimes competition fierce enough work fun Besides events mentioned last time MA March 89 bclow such events want share Catapult gliders Chicago Aeronuts have Catapult Glider event contests has adopted NFFS USIC rules specify model 12 x 3-in wing launching stick used handle rubber no longer 6 event blends well normal HLG held Category low Cat egory II sites would probably require maxi mum weight limit safety watching event Johnson City expected winning fliers have consistent group nine flights wasnt Based own HLG experi ence seems like repeatable release would easier catapult classic runand-throw flight limited model another event de signed Professor Larrabee MIT event contestant furnished 12-in piece / sheet balsa 12-in piece / x PLANES & THINGS / /a-in balsa 6-in-dia plastic prop shaft aluminum tubing prop bearing thread glue model built contest success usually demands advance planning make best use materials provided Free-form paper airplanes event dreamed up San Diego Orbiteers Con struction materials limited single 8 x IIin sheet paper tape glue paper clips may used Delta Dart variations March 88 Bat Sheet Seattle Strat-0-Bats club newsletter re ported variations Frank Ehlings brain child Bruce Kinball Dennis Weatherly moving wing rear moving stab front nifty canard produced biplane also produced adding second wing above first 1-in posts basic Delta Dart planform can also re tained use lighter wood plastic con denser paper covering smaller rubber modifications tame Delta Dart small Category sites drastically increase flight times careful guidance begin ning builders can eased learning Indoor techniques next step substitute /32 sheet balsa styrofoam prop blades keep plastic hub time fliers ready learn prop rubber variations graduate Novice Pennyplane arena Old-Timer Indoor challenge Boeing Hawks model club Boeing employees Seattle WA area its new events OldTimer Indoor Challenge sponsored Ed Lamb behalf local SAM 8 chapter Con tact Ed 15911 SE 42nd Place Bellevue WA 98006 copy rules used An abridged copy rules follows FM-60 FLEX MOUNT 60 Accepts Front-Intake 60 Engines Includes necessary mounting hardware Made USA July 1989 161 PRESENTING FL INGER THE ULTIMATE SMALL SAILPLANE HANDLAUNCH HI-STARTorSLOPE WINGSPAN 57 WEIGHT l2oz MACHINECUT PARTS DEALERS&DIST INQUIRIES INVITEDFLINGER LJMP 110 $2995 ELECTRA L ITE-ICARUS-PANTERA- METEOR-ELECTRICUS-WHISTLER PR ELUDE-COMET LARRY JOLLY MODEL PRODUCTS 5501 W COMO SANTA ANA CALIFORNIA 92703 714 826 6861 FM-4o 14 INTRODUCING L MifFI TNJT FOR 40 AND 60 SIZE ENGINES Reduces Airframe Noise Isolates Engine Vibration Versatile 3 & 4 Hole Mount Universal Mounting System /_1226 E Ave J-12 & Lancaster CA 93535 Available throu9h better Hobby Shops Dealer & Distributor Inquiries Invited Catalog 14 BIGGER ever over 200 things have never seen before NEW Giant Telemaster NEW High-performance Electric Motors NEW Props accessories NEW Electric Airplanes worlds FASTEST electric plane NEW FAST boats NEW Steam boat NEW ORACOVER covering material NEW Helicopter NEW sailpianes NEW accessories . Street Address City 1Models must replicas models flown before December 31 1935 2The model scoring based combina tion Mooney-style appearance/fidelity judg ing best single time six flights 3The events scheduled several times per season perpetual trophy awarded end Indoor season well merchandise awards winners individual meets last photo shows Mark Sextons Senior ROG required documentation model won January 28 1989 contest 243 flight counting part score Pressure domes Ed Whitten sent clipping de scribing Tokyo Dome downtown Tokyo Japan dome encloses professional baseball field covered Teflon-coated fiber glass roof supported air pressure Eds query Has anyone flown airpressure-supported domes What effect models Comments anyone ROG wheels Jim Jones suggests wheels ROG events can easily made very light strong method shown figure method soak long balsa strip / x 4, example water wrap around dowel suitable diameter Stick 3/4 ROG Cabin shown sketch After baking air drying balsa make single cut across spiral balsa separating sev eral circles some scrap Glue circle cut insert single spoke circle hub bearing made tiny piece tubinglike furnished some kinds cy anoacrylate glue Antol nette/Haug ht Continued page 78 tail assembly however calls different technique First cover side surface let dry completely Next trim tissue within Coat excess tissue dope lay top sheet place Adhere excess tis sue directly other side around edges Let dry lightly spray water shrink tissue After parts dry begin applying coats dope Once dope has built up well sealed around wire edges trim excess tissue off about /64 wire have final color Antoinette nat ural linen cockpit forward fu selage painted medium brown Finish off wings tail five six coats clear dope Final assembly Hinge elevator stabilizer job used oldfashioned method making sewn hinges As sketch plans shows basic technique involves creating figure eight sews both spars together plans photos show location Four figure eight patterns sufficient Put two side ribs two flanking center rib Mount nylon control horn eleva tor position glue stabilizer fuselage fin can glued next Make sure rudder post lines up well tail post gluing rudders check have same amount off set wing assembly held fuselage long wood screws After aligning wings fuselage add CyA joints lock wing place Make center rigging post its mount install Drill inboard wing tip receive lead-out guide dowels glue Run cable lead-outs through holes dowels hook up bellcrank Finish off lead-out ends check controls proper movements Make final bend pushrod el evator horn complete control system Moving nose ship epoxy fuel tank between engine area front spar used Perfect brand rectan gular fuel tank looks rather proper engine can mounted temporarily propeller place Add wheels scale details desire side ra diators should installed before rig ging have room work Rigging optionalthough essential really want catch full flavor Antoinette used heavy black fishing line rig original installation tech nique straightforward enough diffi cult explain Studying scale referenc es photos can run down before beginning will great help Also photos pages will explain better can rigging run through %2-diameter holes drilled through tips spars Continued page 166 162 Model Aviation SMART LIGHT RC BATTERY VOLTAGE MONITOR DONT FLY WITHOUT IT Mounts plane plugs-in between Receiver Switch avsllabie panel mount toggle switch Precision IC voltage detector circuit Bi-color LED Glows GREEN Flight peck turned ON Battery Voltage greater 48 VDC RED Battery less 48 VDC Specify flight packlconnector FUTABA J AM 3 pIn$2495 Deans 3 pIn $1995 No connectors use yours 5 Smart Light Swltch.ADD $500 FUTABA J Conn Deans Conn Send Check Money Order Add $3 Postage Handling PA Residenls add 6% Sales Tax 631 MANCHESTER ROAD NORRISTOWN PA 19403 ZZ ENTERPRISES INC TELE 215539-7476 Name StateZ p HOWW Bg
Edition: Model Aviation - 1989/07
Page Numbers: 75, 160, 161, 162
NUMBER FOUR Bill Hannan has pub lished another very well done Peanuts & Pistachios series seems get bet ter Volume four has 18 pages contains usual mix photos plans letters over world non-Scale person like myself minibooks make enjoyable reading certainly easy relate motto front cover Inspiration builders small Scale flying models Get copy sending $550 plus $150 postage handling Hannans Runway PO Box Escondido CA 92025 Reader feedback Ralph Turner Avon OH notes another source forms socalled jug props PVC pipe sizes used plumbers comments have heard anyone else using PVC pipe have done considerable work method highly successful drawback have much latitude choice ra dius sizes suitable use available locally four-inch six-inch inside diameter ID wall thickness around radii 2 3 respec tively PVC pipe can obtained plumbing suppliers suggest looking plumber does sewer drain work Ask small left over piece jobs 12-in-long piece enough plumbers will happy assist PVC can easily cut saw can make desirable length procedure making prop blades roughly similar traditional methodswet blade stock lay directly pipe correct angle cover piece typing pa per strap down masking tape next step new anyway place pipe SWELd 51d - 4ff40J *41 nhi eov vorrrr TAP5 JAM 5A6 4e 4ey e cpr *pjtr -rv 4 AtA c/r 0f6/A4 616 E40J 84Od 15 Fabrication ROG wheels easier Jim Jones wayseveral wheels once Using Jims method can make some very light strong wheels satisfying results blades attached microwave oven zap few minutes oven takes four minutes full power time will vary different ovens let whole assem bly cool room temperature before removing blades pipe should careful removing pipe oven since will very hot safer let assembly cool oven am convinced better procedure using regular oven because way microwaves work through wood interior well outer layer believe causes change structure permanent Another use 0-rings have extolled vir tues using 0-rings Indoor motors several times before Aside convenience hand ling motor 0-rings both ends allows know precisely turns torque avail able launch time major problem com petitive Pennyplanes 10-in motor stick isnt long enough handle long heavy mo tors required top times As result bunching hung knots other problems plague seri ous PP flier Braided motors Unlimited Outdoor Rubber models now called Mulvihill class similar problems some fliers used braided motors braided motor has prewound loosely motor tends twist around itself Out turns prevented unwound motors Continued page 160 July 1989 75 Free Flight Indoor Bud Tenny Box 545 Richardson TX 75080 Senior HOG model rebornMark Sextons replica 1929 model wins 1989 contest doc umentation required win 243 flight added Marks score Ed Lamb Photo 40/4 70 5O/t- s-P/e4 4-ZIP s-o4r dIzq 7-ep e-5 rueVS 0-rings can sliced tubing such RC pushrods slotted block will help keep consistent cut very good idea Bud braided motor can definite advantage during competition built using 0-rings MINI-ELECTRIC QUIET ANT START STEMSCHJrERIES [v32][b-1-10-1-10]]$2495EFC-5001B5 Props Charge Cord andLaw cost Quick Charttht Batteries Reqattns spacers etc4 D type hoonries FC-402 Ideal tar FLIGHT BATTERIES $3295B-62 HY-7t 2w 50 mA-Hr $ 995 attery St-5 SwitchB-63 HY70 3w 50 mA-fir 1295 tractieno B-33L HY42 3 e tOO mA-Hr B-34L HY42 4x itt mA-Hr B-13L IHY42 3w iBO mA-Hr rains1295 424w iBO mA-Hr 45 grams1595 Q40W5 ACfl ,flu . en1905 including all-important graph models used illustrate graph mostly designs Fifties Nostalgia era same laws physics applied 1940 earlier think Rubber models may best flown just bit stable direction 5%-l0% Gas models shown Anyway once understand article simple calculations needed find models location graph can establish safe CG posi tion remains perhaps find optimum CG field trials errors method does work article helps understand Scale model tiny stab must have CG forward 30%-of-wing-chord location fly success fully Civy Boy could fly CU aft wings trailing edge Returning Hi-Ho story Sal later told CG position gave him helpful model flew well Ed Lidgard wrote later telling impressed Sals tech nique finding optimum CU said Sal puts small bolt tail adds sub tracts washers to make small CU changes moves CU aft retrims model until performance gets worse instead better moves CU forward again until per formance suffers point just between two extremes best position Most us satisfied whatever CU have model flyable Sal beats us time RC folk will say large pitch trim change experience between power power Off can reduced moving CU aftbut too far gives model overly sensitive elevator movement will pay op timize CU location ease flying less pitch trim change because glide will improve may want CU bit ahead posi tion Free Flight will get somewhat bet ter control response too far forward will hurt glide increasing drag due Up trim model has have whether realize counter nose-heavy condition am looking two Hand-Launched Glider plans design used Ray Mathews FUBAR fame called FUGAN other kit Testors late Forties no other name Contest Hand-Launched Glider something like some what similar current Campbells Thermal Piglet HLU Ill appreciate leads and/or copies plans Ill make same available theyre ob tained Speaking Campbells Custom Kits has new catalog Out send him couple bucks get yours lists modern Old-Timer Nostalgia era kits good source Free Flight supplies timers winding hooks Zaic yearbooksgood stuff need Lee wife run business manufacture kits quality folks business address PO Box 5996 Lake Worth FL 33466-5996 Recent additions Campbells line would interest Old-Timer fliers Earl Stahls Gypsy Rubber cabin ship similar better-known Korda Wakefield SAM-legal Hand-Launched Glider called Vartanian also various kits formerly made Fresno Easy Built including 1939 Cana dian Wakefield should competitive Scientific Miss Worlds Fair likely competitive sure pretty attended club meeting SAM 56 Wichita KS gave little slide show photos took 1988 SAM Champs wellreceived presentation would willing try something like other clubs trans portation other costs can arranged SAM chapter Tahiti FF Indoor/Tenny Continued page 75 drooping puddle nose tail shifting models balance case Pennyplane braiding seems reduce mation knots hang up side fuselage prevent section motor unwinding So what about 0-rings photos shows both ends braided motor Note motor consists four strands Actually very long loop doubled back both ends rear hook Integrating 0-rings motor requires four hands doing fol lowing 1 Begin strip rubber about three inches longer four times length required motor weighing what fin ished motor needs weigh means 160 Model Aviation MINI POWER AT ITS BEST LIGHT WEIGHT K CHARGE MOTOPROPSPRO HY70$1495VI-ill 7 1 gear ratio trgage disengage Freeloclades HY-7t BB Wheeling 10 grams acladed soaps note meterConnecter sod Access HY-lOR -111R Same HY-70 wittSame VL-ltl Disconnects Slide BathTa oubstitate B H Y-70 H VL-192 HY-42 Includes HY42 Motor P1 Improved sersion HY-48 AppiCharBe Plag Cord Acci $1795 der 7 leads I3aick 1 Motor 30 size models sias 02 tuel esgine $2795 $3795 Remote Battery HolderVL Flight Battery aba ye add $300Field ban FF Old-Timers/Baker Continued page 74 Modelers Choice OMP EPOXIES High Quality Model Construction Jr Kwk Set 6 Minute5 02 $ 695 Kwik Set 6 Minute10 02 $1095 Giant Kwk Set 6 Minute16 02 $1495 Half FastlOMinute100Z$ 995 OMP AIRCRAFT INSTRUMENTS 80in3116114318l/2$ 179 40in3/4andoneinch$ 179 EASY OFF PULLER proper tool removing drive washeraLand flywheels $ 795 Gas Model Products 8773 Russet Dr Cincinnati OH 45239 dealer call 513-385-7398 order direct add $150 postage / / A-J INTERCEPTOR IRTF $750 $595 NO TE PLEASE ADS EL OH fOE POSTAGE * HANDLING FIRST THREE MODELS ODD TEN PERCENT OE PETHE TOE EACH ALOTTIONAL Aw0iJ AIRCRAFT COMPANY RO Box 68132 Portland OR 97268 see Dealer Add Dollar No 30a i/a Scale s59~ REIAHEE le s6~ U mI7U ml IIei s section area rubber half two-strand motor same weight length 2 Slide 0-ring middle strip put loose ends together second pair hands 3 Slide second 0-ring over both ends center doubled strip 4 Hook winder first 0-ring put enough turns two strands loosely twisted along entire length 5 Taking care avoid losing turns un hook winder end hang second 0-ring 6 Thread two loose ends through top 0-ring tie ends using whatever knot like 7 When weight removed motor will twist around itself becoming much shorter process 8 Lube motor thoroughly put under moderate tension Continue work lube stroking get same tension four strands 9 Use motor just like motor equivalent cross section winding equal number turns setting launch torque appropriate conditions Comments The braided motor has unusual advantagea broken strand doesnt stop flight have happen once braids capture loose ends right break theoretical advantage discounted strands nearly square As result according theory motor strands stressed uniformly strand rectangular cross section twisted tightly around similar strand would rectangu lar configuration edges stressed FLEX-MOUNT 40 Accepts Front-tntake 25 to50 Engines tocludes necessary mounting hardware center down side braided motors comes evident comes shortening motor its hassle equalizing length strands Making 0-rings Another photo shows build 0-rings shown previous source material RC pushrod plastic tubing 0-rings simply sliced off tubing single-edge razor blade grooved block shown used hold tubing guide blade make parallel cuts Vary thickness ring suit rubber size fun models Actually models should fun sometimes competition fierce enough work fun Besides events mentioned last time MA March 89 bclow such events want share Catapult gliders Chicago Aeronuts have Catapult Glider event contests has adopted NFFS USIC rules specify model 12 x 3-in wing launching stick used handle rubber no longer 6 event blends well normal HLG held Category low Cat egory II sites would probably require maxi mum weight limit safety watching event Johnson City expected winning fliers have consistent group nine flights wasnt Based own HLG experi ence seems like repeatable release would easier catapult classic runand-throw flight limited model another event de signed Professor Larrabee MIT event contestant furnished 12-in piece / sheet balsa 12-in piece / x PLANES & THINGS / /a-in balsa 6-in-dia plastic prop shaft aluminum tubing prop bearing thread glue model built contest success usually demands advance planning make best use materials provided Free-form paper airplanes event dreamed up San Diego Orbiteers Con struction materials limited single 8 x IIin sheet paper tape glue paper clips may used Delta Dart variations March 88 Bat Sheet Seattle Strat-0-Bats club newsletter re ported variations Frank Ehlings brain child Bruce Kinball Dennis Weatherly moving wing rear moving stab front nifty canard produced biplane also produced adding second wing above first 1-in posts basic Delta Dart planform can also re tained use lighter wood plastic con denser paper covering smaller rubber modifications tame Delta Dart small Category sites drastically increase flight times careful guidance begin ning builders can eased learning Indoor techniques next step substitute /32 sheet balsa styrofoam prop blades keep plastic hub time fliers ready learn prop rubber variations graduate Novice Pennyplane arena Old-Timer Indoor challenge Boeing Hawks model club Boeing employees Seattle WA area its new events OldTimer Indoor Challenge sponsored Ed Lamb behalf local SAM 8 chapter Con tact Ed 15911 SE 42nd Place Bellevue WA 98006 copy rules used An abridged copy rules follows FM-60 FLEX MOUNT 60 Accepts Front-Intake 60 Engines Includes necessary mounting hardware Made USA July 1989 161 PRESENTING FL INGER THE ULTIMATE SMALL SAILPLANE HANDLAUNCH HI-STARTorSLOPE WINGSPAN 57 WEIGHT l2oz MACHINECUT PARTS DEALERS&DIST INQUIRIES INVITEDFLINGER LJMP 110 $2995 ELECTRA L ITE-ICARUS-PANTERA- METEOR-ELECTRICUS-WHISTLER PR ELUDE-COMET LARRY JOLLY MODEL PRODUCTS 5501 W COMO SANTA ANA CALIFORNIA 92703 714 826 6861 FM-4o 14 INTRODUCING L MifFI TNJT FOR 40 AND 60 SIZE ENGINES Reduces Airframe Noise Isolates Engine Vibration Versatile 3 & 4 Hole Mount Universal Mounting System /_1226 E Ave J-12 & Lancaster CA 93535 Available throu9h better Hobby Shops Dealer & Distributor Inquiries Invited Catalog 14 BIGGER ever over 200 things have never seen before NEW Giant Telemaster NEW High-performance Electric Motors NEW Props accessories NEW Electric Airplanes worlds FASTEST electric plane NEW FAST boats NEW Steam boat NEW ORACOVER covering material NEW Helicopter NEW sailpianes NEW accessories . Street Address City 1Models must replicas models flown before December 31 1935 2The model scoring based combina tion Mooney-style appearance/fidelity judg ing best single time six flights 3The events scheduled several times per season perpetual trophy awarded end Indoor season well merchandise awards winners individual meets last photo shows Mark Sextons Senior ROG required documentation model won January 28 1989 contest 243 flight counting part score Pressure domes Ed Whitten sent clipping de scribing Tokyo Dome downtown Tokyo Japan dome encloses professional baseball field covered Teflon-coated fiber glass roof supported air pressure Eds query Has anyone flown airpressure-supported domes What effect models Comments anyone ROG wheels Jim Jones suggests wheels ROG events can easily made very light strong method shown figure method soak long balsa strip / x 4, example water wrap around dowel suitable diameter Stick 3/4 ROG Cabin shown sketch After baking air drying balsa make single cut across spiral balsa separating sev eral circles some scrap Glue circle cut insert single spoke circle hub bearing made tiny piece tubinglike furnished some kinds cy anoacrylate glue Antol nette/Haug ht Continued page 78 tail assembly however calls different technique First cover side surface let dry completely Next trim tissue within Coat excess tissue dope lay top sheet place Adhere excess tis sue directly other side around edges Let dry lightly spray water shrink tissue After parts dry begin applying coats dope Once dope has built up well sealed around wire edges trim excess tissue off about /64 wire have final color Antoinette nat ural linen cockpit forward fu selage painted medium brown Finish off wings tail five six coats clear dope Final assembly Hinge elevator stabilizer job used oldfashioned method making sewn hinges As sketch plans shows basic technique involves creating figure eight sews both spars together plans photos show location Four figure eight patterns sufficient Put two side ribs two flanking center rib Mount nylon control horn eleva tor position glue stabilizer fuselage fin can glued next Make sure rudder post lines up well tail post gluing rudders check have same amount off set wing assembly held fuselage long wood screws After aligning wings fuselage add CyA joints lock wing place Make center rigging post its mount install Drill inboard wing tip receive lead-out guide dowels glue Run cable lead-outs through holes dowels hook up bellcrank Finish off lead-out ends check controls proper movements Make final bend pushrod el evator horn complete control system Moving nose ship epoxy fuel tank between engine area front spar used Perfect brand rectan gular fuel tank looks rather proper engine can mounted temporarily propeller place Add wheels scale details desire side ra diators should installed before rig ging have room work Rigging optionalthough essential really want catch full flavor Antoinette used heavy black fishing line rig original installation tech nique straightforward enough diffi cult explain Studying scale referenc es photos can run down before beginning will great help Also photos pages will explain better can rigging run through %2-diameter holes drilled through tips spars Continued page 166 162 Model Aviation SMART LIGHT RC BATTERY VOLTAGE MONITOR DONT FLY WITHOUT IT Mounts plane plugs-in between Receiver Switch avsllabie panel mount toggle switch Precision IC voltage detector circuit Bi-color LED Glows GREEN Flight peck turned ON Battery Voltage greater 48 VDC RED Battery less 48 VDC Specify flight packlconnector FUTABA J AM 3 pIn$2495 Deans 3 pIn $1995 No connectors use yours 5 Smart Light Swltch.ADD $500 FUTABA J Conn Deans Conn Send Check Money Order Add $3 Postage Handling PA Residenls add 6% Sales Tax 631 MANCHESTER ROAD NORRISTOWN PA 19403 ZZ ENTERPRISES INC TELE 215539-7476 Name StateZ p HOWW Bg
Edition: Model Aviation - 1989/07
Page Numbers: 75, 160, 161, 162
NUMBER FOUR Bill Hannan has pub lished another very well done Peanuts & Pistachios series seems get bet ter Volume four has 18 pages contains usual mix photos plans letters over world non-Scale person like myself minibooks make enjoyable reading certainly easy relate motto front cover Inspiration builders small Scale flying models Get copy sending $550 plus $150 postage handling Hannans Runway PO Box Escondido CA 92025 Reader feedback Ralph Turner Avon OH notes another source forms socalled jug props PVC pipe sizes used plumbers comments have heard anyone else using PVC pipe have done considerable work method highly successful drawback have much latitude choice ra dius sizes suitable use available locally four-inch six-inch inside diameter ID wall thickness around radii 2 3 respec tively PVC pipe can obtained plumbing suppliers suggest looking plumber does sewer drain work Ask small left over piece jobs 12-in-long piece enough plumbers will happy assist PVC can easily cut saw can make desirable length procedure making prop blades roughly similar traditional methodswet blade stock lay directly pipe correct angle cover piece typing pa per strap down masking tape next step new anyway place pipe SWELd 51d - 4ff40J *41 nhi eov vorrrr TAP5 JAM 5A6 4e 4ey e cpr *pjtr -rv 4 AtA c/r 0f6/A4 616 E40J 84Od 15 Fabrication ROG wheels easier Jim Jones wayseveral wheels once Using Jims method can make some very light strong wheels satisfying results blades attached microwave oven zap few minutes oven takes four minutes full power time will vary different ovens let whole assem bly cool room temperature before removing blades pipe should careful removing pipe oven since will very hot safer let assembly cool oven am convinced better procedure using regular oven because way microwaves work through wood interior well outer layer believe causes change structure permanent Another use 0-rings have extolled vir tues using 0-rings Indoor motors several times before Aside convenience hand ling motor 0-rings both ends allows know precisely turns torque avail able launch time major problem com petitive Pennyplanes 10-in motor stick isnt long enough handle long heavy mo tors required top times As result bunching hung knots other problems plague seri ous PP flier Braided motors Unlimited Outdoor Rubber models now called Mulvihill class similar problems some fliers used braided motors braided motor has prewound loosely motor tends twist around itself Out turns prevented unwound motors Continued page 160 July 1989 75 Free Flight Indoor Bud Tenny Box 545 Richardson TX 75080 Senior HOG model rebornMark Sextons replica 1929 model wins 1989 contest doc umentation required win 243 flight added Marks score Ed Lamb Photo 40/4 70 5O/t- s-P/e4 4-ZIP s-o4r dIzq 7-ep e-5 rueVS 0-rings can sliced tubing such RC pushrods slotted block will help keep consistent cut very good idea Bud braided motor can definite advantage during competition built using 0-rings MINI-ELECTRIC QUIET ANT START STEMSCHJrERIES [v32][b-1-10-1-10]]$2495EFC-5001B5 Props Charge Cord andLaw cost Quick Charttht Batteries Reqattns spacers etc4 D type hoonries FC-402 Ideal tar FLIGHT BATTERIES $3295B-62 HY-7t 2w 50 mA-Hr $ 995 attery St-5 SwitchB-63 HY70 3w 50 mA-fir 1295 tractieno B-33L HY42 3 e tOO mA-Hr B-34L HY42 4x itt mA-Hr B-13L IHY42 3w iBO mA-Hr rains1295 424w iBO mA-Hr 45 grams1595 Q40W5 ACfl ,flu . en1905 including all-important graph models used illustrate graph mostly designs Fifties Nostalgia era same laws physics applied 1940 earlier think Rubber models may best flown just bit stable direction 5%-l0% Gas models shown Anyway once understand article simple calculations needed find models location graph can establish safe CG posi tion remains perhaps find optimum CG field trials errors method does work article helps understand Scale model tiny stab must have CG forward 30%-of-wing-chord location fly success fully Civy Boy could fly CU aft wings trailing edge Returning Hi-Ho story Sal later told CG position gave him helpful model flew well Ed Lidgard wrote later telling impressed Sals tech nique finding optimum CU said Sal puts small bolt tail adds sub tracts washers to make small CU changes moves CU aft retrims model until performance gets worse instead better moves CU forward again until per formance suffers point just between two extremes best position Most us satisfied whatever CU have model flyable Sal beats us time RC folk will say large pitch trim change experience between power power Off can reduced moving CU aftbut too far gives model overly sensitive elevator movement will pay op timize CU location ease flying less pitch trim change because glide will improve may want CU bit ahead posi tion Free Flight will get somewhat bet ter control response too far forward will hurt glide increasing drag due Up trim model has have whether realize counter nose-heavy condition am looking two Hand-Launched Glider plans design used Ray Mathews FUBAR fame called FUGAN other kit Testors late Forties no other name Contest Hand-Launched Glider something like some what similar current Campbells Thermal Piglet HLU Ill appreciate leads and/or copies plans Ill make same available theyre ob tained Speaking Campbells Custom Kits has new catalog Out send him couple bucks get yours lists modern Old-Timer Nostalgia era kits good source Free Flight supplies timers winding hooks Zaic yearbooksgood stuff need Lee wife run business manufacture kits quality folks business address PO Box 5996 Lake Worth FL 33466-5996 Recent additions Campbells line would interest Old-Timer fliers Earl Stahls Gypsy Rubber cabin ship similar better-known Korda Wakefield SAM-legal Hand-Launched Glider called Vartanian also various kits formerly made Fresno Easy Built including 1939 Cana dian Wakefield should competitive Scientific Miss Worlds Fair likely competitive sure pretty attended club meeting SAM 56 Wichita KS gave little slide show photos took 1988 SAM Champs wellreceived presentation would willing try something like other clubs trans portation other costs can arranged SAM chapter Tahiti FF Indoor/Tenny Continued page 75 drooping puddle nose tail shifting models balance case Pennyplane braiding seems reduce mation knots hang up side fuselage prevent section motor unwinding So what about 0-rings photos shows both ends braided motor Note motor consists four strands Actually very long loop doubled back both ends rear hook Integrating 0-rings motor requires four hands doing fol lowing 1 Begin strip rubber about three inches longer four times length required motor weighing what fin ished motor needs weigh means 160 Model Aviation MINI POWER AT ITS BEST LIGHT WEIGHT K CHARGE MOTOPROPSPRO HY70$1495VI-ill 7 1 gear ratio trgage disengage Freeloclades HY-7t BB Wheeling 10 grams acladed soaps note meterConnecter sod Access HY-lOR -111R Same HY-70 wittSame VL-ltl Disconnects Slide BathTa oubstitate B H Y-70 H VL-192 HY-42 Includes HY42 Motor P1 Improved sersion HY-48 AppiCharBe Plag Cord Acci $1795 der 7 leads I3aick 1 Motor 30 size models sias 02 tuel esgine $2795 $3795 Remote Battery HolderVL Flight Battery aba ye add $300Field ban FF Old-Timers/Baker Continued page 74 Modelers Choice OMP EPOXIES High Quality Model Construction Jr Kwk Set 6 Minute5 02 $ 695 Kwik Set 6 Minute10 02 $1095 Giant Kwk Set 6 Minute16 02 $1495 Half FastlOMinute100Z$ 995 OMP AIRCRAFT INSTRUMENTS 80in3116114318l/2$ 179 40in3/4andoneinch$ 179 EASY OFF PULLER proper tool removing drive washeraLand flywheels $ 795 Gas Model Products 8773 Russet Dr Cincinnati OH 45239 dealer call 513-385-7398 order direct add $150 postage / / A-J INTERCEPTOR IRTF $750 $595 NO TE PLEASE ADS EL OH fOE POSTAGE * HANDLING FIRST THREE MODELS ODD TEN PERCENT OE PETHE TOE EACH ALOTTIONAL Aw0iJ AIRCRAFT COMPANY RO Box 68132 Portland OR 97268 see Dealer Add Dollar No 30a i/a Scale s59~ REIAHEE le s6~ U mI7U ml IIei s section area rubber half two-strand motor same weight length 2 Slide 0-ring middle strip put loose ends together second pair hands 3 Slide second 0-ring over both ends center doubled strip 4 Hook winder first 0-ring put enough turns two strands loosely twisted along entire length 5 Taking care avoid losing turns un hook winder end hang second 0-ring 6 Thread two loose ends through top 0-ring tie ends using whatever knot like 7 When weight removed motor will twist around itself becoming much shorter process 8 Lube motor thoroughly put under moderate tension Continue work lube stroking get same tension four strands 9 Use motor just like motor equivalent cross section winding equal number turns setting launch torque appropriate conditions Comments The braided motor has unusual advantagea broken strand doesnt stop flight have happen once braids capture loose ends right break theoretical advantage discounted strands nearly square As result according theory motor strands stressed uniformly strand rectangular cross section twisted tightly around similar strand would rectangu lar configuration edges stressed FLEX-MOUNT 40 Accepts Front-tntake 25 to50 Engines tocludes necessary mounting hardware center down side braided motors comes evident comes shortening motor its hassle equalizing length strands Making 0-rings Another photo shows build 0-rings shown previous source material RC pushrod plastic tubing 0-rings simply sliced off tubing single-edge razor blade grooved block shown used hold tubing guide blade make parallel cuts Vary thickness ring suit rubber size fun models Actually models should fun sometimes competition fierce enough work fun Besides events mentioned last time MA March 89 bclow such events want share Catapult gliders Chicago Aeronuts have Catapult Glider event contests has adopted NFFS USIC rules specify model 12 x 3-in wing launching stick used handle rubber no longer 6 event blends well normal HLG held Category low Cat egory II sites would probably require maxi mum weight limit safety watching event Johnson City expected winning fliers have consistent group nine flights wasnt Based own HLG experi ence seems like repeatable release would easier catapult classic runand-throw flight limited model another event de signed Professor Larrabee MIT event contestant furnished 12-in piece / sheet balsa 12-in piece / x PLANES & THINGS / /a-in balsa 6-in-dia plastic prop shaft aluminum tubing prop bearing thread glue model built contest success usually demands advance planning make best use materials provided Free-form paper airplanes event dreamed up San Diego Orbiteers Con struction materials limited single 8 x IIin sheet paper tape glue paper clips may used Delta Dart variations March 88 Bat Sheet Seattle Strat-0-Bats club newsletter re ported variations Frank Ehlings brain child Bruce Kinball Dennis Weatherly moving wing rear moving stab front nifty canard produced biplane also produced adding second wing above first 1-in posts basic Delta Dart planform can also re tained use lighter wood plastic con denser paper covering smaller rubber modifications tame Delta Dart small Category sites drastically increase flight times careful guidance begin ning builders can eased learning Indoor techniques next step substitute /32 sheet balsa styrofoam prop blades keep plastic hub time fliers ready learn prop rubber variations graduate Novice Pennyplane arena Old-Timer Indoor challenge Boeing Hawks model club Boeing employees Seattle WA area its new events OldTimer Indoor Challenge sponsored Ed Lamb behalf local SAM 8 chapter Con tact Ed 15911 SE 42nd Place Bellevue WA 98006 copy rules used An abridged copy rules follows FM-60 FLEX MOUNT 60 Accepts Front-Intake 60 Engines Includes necessary mounting hardware Made USA July 1989 161 PRESENTING FL INGER THE ULTIMATE SMALL SAILPLANE HANDLAUNCH HI-STARTorSLOPE WINGSPAN 57 WEIGHT l2oz MACHINECUT PARTS DEALERS&DIST INQUIRIES INVITEDFLINGER LJMP 110 $2995 ELECTRA L ITE-ICARUS-PANTERA- METEOR-ELECTRICUS-WHISTLER PR ELUDE-COMET LARRY JOLLY MODEL PRODUCTS 5501 W COMO SANTA ANA CALIFORNIA 92703 714 826 6861 FM-4o 14 INTRODUCING L MifFI TNJT FOR 40 AND 60 SIZE ENGINES Reduces Airframe Noise Isolates Engine Vibration Versatile 3 & 4 Hole Mount Universal Mounting System /_1226 E Ave J-12 & Lancaster CA 93535 Available throu9h better Hobby Shops Dealer & Distributor Inquiries Invited Catalog 14 BIGGER ever over 200 things have never seen before NEW Giant Telemaster NEW High-performance Electric Motors NEW Props accessories NEW Electric Airplanes worlds FASTEST electric plane NEW FAST boats NEW Steam boat NEW ORACOVER covering material NEW Helicopter NEW sailpianes NEW accessories . Street Address City 1Models must replicas models flown before December 31 1935 2The model scoring based combina tion Mooney-style appearance/fidelity judg ing best single time six flights 3The events scheduled several times per season perpetual trophy awarded end Indoor season well merchandise awards winners individual meets last photo shows Mark Sextons Senior ROG required documentation model won January 28 1989 contest 243 flight counting part score Pressure domes Ed Whitten sent clipping de scribing Tokyo Dome downtown Tokyo Japan dome encloses professional baseball field covered Teflon-coated fiber glass roof supported air pressure Eds query Has anyone flown airpressure-supported domes What effect models Comments anyone ROG wheels Jim Jones suggests wheels ROG events can easily made very light strong method shown figure method soak long balsa strip / x 4, example water wrap around dowel suitable diameter Stick 3/4 ROG Cabin shown sketch After baking air drying balsa make single cut across spiral balsa separating sev eral circles some scrap Glue circle cut insert single spoke circle hub bearing made tiny piece tubinglike furnished some kinds cy anoacrylate glue Antol nette/Haug ht Continued page 78 tail assembly however calls different technique First cover side surface let dry completely Next trim tissue within Coat excess tissue dope lay top sheet place Adhere excess tis sue directly other side around edges Let dry lightly spray water shrink tissue After parts dry begin applying coats dope Once dope has built up well sealed around wire edges trim excess tissue off about /64 wire have final color Antoinette nat ural linen cockpit forward fu selage painted medium brown Finish off wings tail five six coats clear dope Final assembly Hinge elevator stabilizer job used oldfashioned method making sewn hinges As sketch plans shows basic technique involves creating figure eight sews both spars together plans photos show location Four figure eight patterns sufficient Put two side ribs two flanking center rib Mount nylon control horn eleva tor position glue stabilizer fuselage fin can glued next Make sure rudder post lines up well tail post gluing rudders check have same amount off set wing assembly held fuselage long wood screws After aligning wings fuselage add CyA joints lock wing place Make center rigging post its mount install Drill inboard wing tip receive lead-out guide dowels glue Run cable lead-outs through holes dowels hook up bellcrank Finish off lead-out ends check controls proper movements Make final bend pushrod el evator horn complete control system Moving nose ship epoxy fuel tank between engine area front spar used Perfect brand rectan gular fuel tank looks rather proper engine can mounted temporarily propeller place Add wheels scale details desire side ra diators should installed before rig ging have room work Rigging optionalthough essential really want catch full flavor Antoinette used heavy black fishing line rig original installation tech nique straightforward enough diffi cult explain Studying scale referenc es photos can run down before beginning will great help Also photos pages will explain better can rigging run through %2-diameter holes drilled through tips spars Continued page 166 162 Model Aviation SMART LIGHT RC BATTERY VOLTAGE MONITOR DONT FLY WITHOUT IT Mounts plane plugs-in between Receiver Switch avsllabie panel mount toggle switch Precision IC voltage detector circuit Bi-color LED Glows GREEN Flight peck turned ON Battery Voltage greater 48 VDC RED Battery less 48 VDC Specify flight packlconnector FUTABA J AM 3 pIn$2495 Deans 3 pIn $1995 No connectors use yours 5 Smart Light Swltch.ADD $500 FUTABA J Conn Deans Conn Send Check Money Order Add $3 Postage Handling PA Residenls add 6% Sales Tax 631 MANCHESTER ROAD NORRISTOWN PA 19403 ZZ ENTERPRISES INC TELE 215539-7476 Name StateZ p HOWW Bg
Edition: Model Aviation - 1989/07
Page Numbers: 75, 160, 161, 162
NUMBER FOUR Bill Hannan has pub lished another very well done Peanuts & Pistachios series seems get bet ter Volume four has 18 pages contains usual mix photos plans letters over world non-Scale person like myself minibooks make enjoyable reading certainly easy relate motto front cover Inspiration builders small Scale flying models Get copy sending $550 plus $150 postage handling Hannans Runway PO Box Escondido CA 92025 Reader feedback Ralph Turner Avon OH notes another source forms socalled jug props PVC pipe sizes used plumbers comments have heard anyone else using PVC pipe have done considerable work method highly successful drawback have much latitude choice ra dius sizes suitable use available locally four-inch six-inch inside diameter ID wall thickness around radii 2 3 respec tively PVC pipe can obtained plumbing suppliers suggest looking plumber does sewer drain work Ask small left over piece jobs 12-in-long piece enough plumbers will happy assist PVC can easily cut saw can make desirable length procedure making prop blades roughly similar traditional methodswet blade stock lay directly pipe correct angle cover piece typing pa per strap down masking tape next step new anyway place pipe SWELd 51d - 4ff40J *41 nhi eov vorrrr TAP5 JAM 5A6 4e 4ey e cpr *pjtr -rv 4 AtA c/r 0f6/A4 616 E40J 84Od 15 Fabrication ROG wheels easier Jim Jones wayseveral wheels once Using Jims method can make some very light strong wheels satisfying results blades attached microwave oven zap few minutes oven takes four minutes full power time will vary different ovens let whole assem bly cool room temperature before removing blades pipe should careful removing pipe oven since will very hot safer let assembly cool oven am convinced better procedure using regular oven because way microwaves work through wood interior well outer layer believe causes change structure permanent Another use 0-rings have extolled vir tues using 0-rings Indoor motors several times before Aside convenience hand ling motor 0-rings both ends allows know precisely turns torque avail able launch time major problem com petitive Pennyplanes 10-in motor stick isnt long enough handle long heavy mo tors required top times As result bunching hung knots other problems plague seri ous PP flier Braided motors Unlimited Outdoor Rubber models now called Mulvihill class similar problems some fliers used braided motors braided motor has prewound loosely motor tends twist around itself Out turns prevented unwound motors Continued page 160 July 1989 75 Free Flight Indoor Bud Tenny Box 545 Richardson TX 75080 Senior HOG model rebornMark Sextons replica 1929 model wins 1989 contest doc umentation required win 243 flight added Marks score Ed Lamb Photo 40/4 70 5O/t- s-P/e4 4-ZIP s-o4r dIzq 7-ep e-5 rueVS 0-rings can sliced tubing such RC pushrods slotted block will help keep consistent cut very good idea Bud braided motor can definite advantage during competition built using 0-rings MINI-ELECTRIC QUIET ANT START STEMSCHJrERIES [v32][b-1-10-1-10]]$2495EFC-5001B5 Props Charge Cord andLaw cost Quick Charttht Batteries Reqattns spacers etc4 D type hoonries FC-402 Ideal tar FLIGHT BATTERIES $3295B-62 HY-7t 2w 50 mA-Hr $ 995 attery St-5 SwitchB-63 HY70 3w 50 mA-fir 1295 tractieno B-33L HY42 3 e tOO mA-Hr B-34L HY42 4x itt mA-Hr B-13L IHY42 3w iBO mA-Hr rains1295 424w iBO mA-Hr 45 grams1595 Q40W5 ACfl ,flu . en1905 including all-important graph models used illustrate graph mostly designs Fifties Nostalgia era same laws physics applied 1940 earlier think Rubber models may best flown just bit stable direction 5%-l0% Gas models shown Anyway once understand article simple calculations needed find models location graph can establish safe CG posi tion remains perhaps find optimum CG field trials errors method does work article helps understand Scale model tiny stab must have CG forward 30%-of-wing-chord location fly success fully Civy Boy could fly CU aft wings trailing edge Returning Hi-Ho story Sal later told CG position gave him helpful model flew well Ed Lidgard wrote later telling impressed Sals tech nique finding optimum CU said Sal puts small bolt tail adds sub tracts washers to make small CU changes moves CU aft retrims model until performance gets worse instead better moves CU forward again until per formance suffers point just between two extremes best position Most us satisfied whatever CU have model flyable Sal beats us time RC folk will say large pitch trim change experience between power power Off can reduced moving CU aftbut too far gives model overly sensitive elevator movement will pay op timize CU location ease flying less pitch trim change because glide will improve may want CU bit ahead posi tion Free Flight will get somewhat bet ter control response too far forward will hurt glide increasing drag due Up trim model has have whether realize counter nose-heavy condition am looking two Hand-Launched Glider plans design used Ray Mathews FUBAR fame called FUGAN other kit Testors late Forties no other name Contest Hand-Launched Glider something like some what similar current Campbells Thermal Piglet HLU Ill appreciate leads and/or copies plans Ill make same available theyre ob tained Speaking Campbells Custom Kits has new catalog Out send him couple bucks get yours lists modern Old-Timer Nostalgia era kits good source Free Flight supplies timers winding hooks Zaic yearbooksgood stuff need Lee wife run business manufacture kits quality folks business address PO Box 5996 Lake Worth FL 33466-5996 Recent additions Campbells line would interest Old-Timer fliers Earl Stahls Gypsy Rubber cabin ship similar better-known Korda Wakefield SAM-legal Hand-Launched Glider called Vartanian also various kits formerly made Fresno Easy Built including 1939 Cana dian Wakefield should competitive Scientific Miss Worlds Fair likely competitive sure pretty attended club meeting SAM 56 Wichita KS gave little slide show photos took 1988 SAM Champs wellreceived presentation would willing try something like other clubs trans portation other costs can arranged SAM chapter Tahiti FF Indoor/Tenny Continued page 75 drooping puddle nose tail shifting models balance case Pennyplane braiding seems reduce mation knots hang up side fuselage prevent section motor unwinding So what about 0-rings photos shows both ends braided motor Note motor consists four strands Actually very long loop doubled back both ends rear hook Integrating 0-rings motor requires four hands doing fol lowing 1 Begin strip rubber about three inches longer four times length required motor weighing what fin ished motor needs weigh means 160 Model Aviation MINI POWER AT ITS BEST LIGHT WEIGHT K CHARGE MOTOPROPSPRO HY70$1495VI-ill 7 1 gear ratio trgage disengage Freeloclades HY-7t BB Wheeling 10 grams acladed soaps note meterConnecter sod Access HY-lOR -111R Same HY-70 wittSame VL-ltl Disconnects Slide BathTa oubstitate B H Y-70 H VL-192 HY-42 Includes HY42 Motor P1 Improved sersion HY-48 AppiCharBe Plag Cord Acci $1795 der 7 leads I3aick 1 Motor 30 size models sias 02 tuel esgine $2795 $3795 Remote Battery HolderVL Flight Battery aba ye add $300Field ban FF Old-Timers/Baker Continued page 74 Modelers Choice OMP EPOXIES High Quality Model Construction Jr Kwk Set 6 Minute5 02 $ 695 Kwik Set 6 Minute10 02 $1095 Giant Kwk Set 6 Minute16 02 $1495 Half FastlOMinute100Z$ 995 OMP AIRCRAFT INSTRUMENTS 80in3116114318l/2$ 179 40in3/4andoneinch$ 179 EASY OFF PULLER proper tool removing drive washeraLand flywheels $ 795 Gas Model Products 8773 Russet Dr Cincinnati OH 45239 dealer call 513-385-7398 order direct add $150 postage / / A-J INTERCEPTOR IRTF $750 $595 NO TE PLEASE ADS EL OH fOE POSTAGE * HANDLING FIRST THREE MODELS ODD TEN PERCENT OE PETHE TOE EACH ALOTTIONAL Aw0iJ AIRCRAFT COMPANY RO Box 68132 Portland OR 97268 see Dealer Add Dollar No 30a i/a Scale s59~ REIAHEE le s6~ U mI7U ml IIei s section area rubber half two-strand motor same weight length 2 Slide 0-ring middle strip put loose ends together second pair hands 3 Slide second 0-ring over both ends center doubled strip 4 Hook winder first 0-ring put enough turns two strands loosely twisted along entire length 5 Taking care avoid losing turns un hook winder end hang second 0-ring 6 Thread two loose ends through top 0-ring tie ends using whatever knot like 7 When weight removed motor will twist around itself becoming much shorter process 8 Lube motor thoroughly put under moderate tension Continue work lube stroking get same tension four strands 9 Use motor just like motor equivalent cross section winding equal number turns setting launch torque appropriate conditions Comments The braided motor has unusual advantagea broken strand doesnt stop flight have happen once braids capture loose ends right break theoretical advantage discounted strands nearly square As result according theory motor strands stressed uniformly strand rectangular cross section twisted tightly around similar strand would rectangu lar configuration edges stressed FLEX-MOUNT 40 Accepts Front-tntake 25 to50 Engines tocludes necessary mounting hardware center down side braided motors comes evident comes shortening motor its hassle equalizing length strands Making 0-rings Another photo shows build 0-rings shown previous source material RC pushrod plastic tubing 0-rings simply sliced off tubing single-edge razor blade grooved block shown used hold tubing guide blade make parallel cuts Vary thickness ring suit rubber size fun models Actually models should fun sometimes competition fierce enough work fun Besides events mentioned last time MA March 89 bclow such events want share Catapult gliders Chicago Aeronuts have Catapult Glider event contests has adopted NFFS USIC rules specify model 12 x 3-in wing launching stick used handle rubber no longer 6 event blends well normal HLG held Category low Cat egory II sites would probably require maxi mum weight limit safety watching event Johnson City expected winning fliers have consistent group nine flights wasnt Based own HLG experi ence seems like repeatable release would easier catapult classic runand-throw flight limited model another event de signed Professor Larrabee MIT event contestant furnished 12-in piece / sheet balsa 12-in piece / x PLANES & THINGS / /a-in balsa 6-in-dia plastic prop shaft aluminum tubing prop bearing thread glue model built contest success usually demands advance planning make best use materials provided Free-form paper airplanes event dreamed up San Diego Orbiteers Con struction materials limited single 8 x IIin sheet paper tape glue paper clips may used Delta Dart variations March 88 Bat Sheet Seattle Strat-0-Bats club newsletter re ported variations Frank Ehlings brain child Bruce Kinball Dennis Weatherly moving wing rear moving stab front nifty canard produced biplane also produced adding second wing above first 1-in posts basic Delta Dart planform can also re tained use lighter wood plastic con denser paper covering smaller rubber modifications tame Delta Dart small Category sites drastically increase flight times careful guidance begin ning builders can eased learning Indoor techniques next step substitute /32 sheet balsa styrofoam prop blades keep plastic hub time fliers ready learn prop rubber variations graduate Novice Pennyplane arena Old-Timer Indoor challenge Boeing Hawks model club Boeing employees Seattle WA area its new events OldTimer Indoor Challenge sponsored Ed Lamb behalf local SAM 8 chapter Con tact Ed 15911 SE 42nd Place Bellevue WA 98006 copy rules used An abridged copy rules follows FM-60 FLEX MOUNT 60 Accepts Front-Intake 60 Engines Includes necessary mounting hardware Made USA July 1989 161 PRESENTING FL INGER THE ULTIMATE SMALL SAILPLANE HANDLAUNCH HI-STARTorSLOPE WINGSPAN 57 WEIGHT l2oz MACHINECUT PARTS DEALERS&DIST INQUIRIES INVITEDFLINGER LJMP 110 $2995 ELECTRA L ITE-ICARUS-PANTERA- METEOR-ELECTRICUS-WHISTLER PR ELUDE-COMET LARRY JOLLY MODEL PRODUCTS 5501 W COMO SANTA ANA CALIFORNIA 92703 714 826 6861 FM-4o 14 INTRODUCING L MifFI TNJT FOR 40 AND 60 SIZE ENGINES Reduces Airframe Noise Isolates Engine Vibration Versatile 3 & 4 Hole Mount Universal Mounting System /_1226 E Ave J-12 & Lancaster CA 93535 Available throu9h better Hobby Shops Dealer & Distributor Inquiries Invited Catalog 14 BIGGER ever over 200 things have never seen before NEW Giant Telemaster NEW High-performance Electric Motors NEW Props accessories NEW Electric Airplanes worlds FASTEST electric plane NEW FAST boats NEW Steam boat NEW ORACOVER covering material NEW Helicopter NEW sailpianes NEW accessories . Street Address City 1Models must replicas models flown before December 31 1935 2The model scoring based combina tion Mooney-style appearance/fidelity judg ing best single time six flights 3The events scheduled several times per season perpetual trophy awarded end Indoor season well merchandise awards winners individual meets last photo shows Mark Sextons Senior ROG required documentation model won January 28 1989 contest 243 flight counting part score Pressure domes Ed Whitten sent clipping de scribing Tokyo Dome downtown Tokyo Japan dome encloses professional baseball field covered Teflon-coated fiber glass roof supported air pressure Eds query Has anyone flown airpressure-supported domes What effect models Comments anyone ROG wheels Jim Jones suggests wheels ROG events can easily made very light strong method shown figure method soak long balsa strip / x 4, example water wrap around dowel suitable diameter Stick 3/4 ROG Cabin shown sketch After baking air drying balsa make single cut across spiral balsa separating sev eral circles some scrap Glue circle cut insert single spoke circle hub bearing made tiny piece tubinglike furnished some kinds cy anoacrylate glue Antol nette/Haug ht Continued page 78 tail assembly however calls different technique First cover side surface let dry completely Next trim tissue within Coat excess tissue dope lay top sheet place Adhere excess tis sue directly other side around edges Let dry lightly spray water shrink tissue After parts dry begin applying coats dope Once dope has built up well sealed around wire edges trim excess tissue off about /64 wire have final color Antoinette nat ural linen cockpit forward fu selage painted medium brown Finish off wings tail five six coats clear dope Final assembly Hinge elevator stabilizer job used oldfashioned method making sewn hinges As sketch plans shows basic technique involves creating figure eight sews both spars together plans photos show location Four figure eight patterns sufficient Put two side ribs two flanking center rib Mount nylon control horn eleva tor position glue stabilizer fuselage fin can glued next Make sure rudder post lines up well tail post gluing rudders check have same amount off set wing assembly held fuselage long wood screws After aligning wings fuselage add CyA joints lock wing place Make center rigging post its mount install Drill inboard wing tip receive lead-out guide dowels glue Run cable lead-outs through holes dowels hook up bellcrank Finish off lead-out ends check controls proper movements Make final bend pushrod el evator horn complete control system Moving nose ship epoxy fuel tank between engine area front spar used Perfect brand rectan gular fuel tank looks rather proper engine can mounted temporarily propeller place Add wheels scale details desire side ra diators should installed before rig ging have room work Rigging optionalthough essential really want catch full flavor Antoinette used heavy black fishing line rig original installation tech nique straightforward enough diffi cult explain Studying scale referenc es photos can run down before beginning will great help Also photos pages will explain better can rigging run through %2-diameter holes drilled through tips spars Continued page 166 162 Model Aviation SMART LIGHT RC BATTERY VOLTAGE MONITOR DONT FLY WITHOUT IT Mounts plane plugs-in between Receiver Switch avsllabie panel mount toggle switch Precision IC voltage detector circuit Bi-color LED Glows GREEN Flight peck turned ON Battery Voltage greater 48 VDC RED Battery less 48 VDC Specify flight packlconnector FUTABA J AM 3 pIn$2495 Deans 3 pIn $1995 No connectors use yours 5 Smart Light Swltch.ADD $500 FUTABA J Conn Deans Conn Send Check Money Order Add $3 Postage Handling PA Residenls add 6% Sales Tax 631 MANCHESTER ROAD NORRISTOWN PA 19403 ZZ ENTERPRISES INC TELE 215539-7476 Name StateZ p HOWW Bg