Radio Control: Scale

Scale Bob Dolly Wischer FAI RULES have begun hear sug gestions US Giant Scale advocates also other nations FAI classification established class Scale model Large models interna tional competition always bring mind transportation difficulties have en countered present-day socalled standard-size models have grown size markedly recent past Europeans can have interna tional contests large models transportation model serious matter model its container cross ocean using airline transportation situation changes Airlines frown upon carrying large boxes baggage air freight becomes expensive truly international contest World Championships Giant Scale would appear impractical unless models built disassembled small components questionnaire Dennis Thump ston FAI Scale Committee chairman asked outline AMA rules could used basis establishment Giant Scale world class several years experience Giant Scale compe tition present rules have proved workable FAI rules could follow format FAI weight limit F4C pres ent RC Scale classification has changed seven kg 154 lb effective January 1 1989 present FAI defini tion model sets maximum surface area wing stabilizer combined 150 din2 2325 sq 1614 sq ft maximum area weight RC Scale model would have fairly light wing loading about 15 oz per sq ft None FAI models see contests have loadings less 20 oz because wing areas always considerably less permitted maximum order increase wing area basic definition model would need alteration general agreement FAI bonus system compensate models complex prototypes inherent flight disadvantages has overly generous result has strong trend towards tactic building air craft takes full advantage cumula tive bonusesto practical exclusion other types bonus system estab lished recognized models could built having 35% added flight score Now has actually oc curred real concern about its ef fect contest entries Modelers willing build multi-engine taildragger biplane high bonuses will drop out competition because recog nized inequalities Diminished interest FAI competition will surely follow Ob viously no set rules can created will give models equal chance win Rule-makers can hope ap proach ideal condition Proposals have written reduce impact bonus percentages flight scores Some would seek abolish bonus completely returning era scaled-down ultralight would have winning potential Others would place top limit 15% 20% total cumulative bonus Another proposal would remove bonuses wing configurations since complexities multi-wings no longer considered detrimental flight now recognized models having three George Clap p 1 readies h-scale Fairchild FC-2 flight 85 Nats George Fairchild historian has written about plane both ModelAviation HlstoricalAviation Album Craft spans 88 uses OS 60 power Cover aluminum MonoKate Tom Polapinks Albatross R scaled National Air Space Museum drawings weighs 11% lb uses Salto 12 four-stroker Don Sobbe built 72-in-span Sopwith Pup L original drawings modeled represent prototype Ottawa museum An Enya 80 four-stroker powers Details include over 200 machined parts Bryant Thompsons B-17G originated Royal kit R Four Supertigre 23s power 78-in 9%-lb craft lettering done hand no decals Finish K&B Superpoxy 50 Model Aviation engines actually less hazard ous fly twins basis reducing multi-engine bonus 10% regardless number pro posals will come vote April 1986 FAI session Paris Should accepted effective date rule change will January 1989 Have opinion Lets hear Design aid Enlarging drawings small three-views made easier using circular slide rule intended specifically purpose Shelby Hagberg uses C-Thru PS 80 Proportional Scale pair 8-in-diameter plastic discs mounted concentrically graduated 1 100 inches upper disc rotated over lower upper has window setting scale ratio between three-view drawing size model desired Once set proper ratio dimensions read along periphery discs having reset dimensions less inch three-view drawing necessary convert fraction decimals using decimal equivalent chart example becomes 50 inner disc plac ing decimal point before five inch 50 inch graduations desired dimen sion can read outer scale either fraction converted decimals preference enlarging threeview would use electronic calcula tor set constant multiplication factor use decimal-inch ruler graduated increments /~ 02 transfer dimensions threeview enlarged drawing However recognize everyone adept decimal-inch system has US industry standard past quarter-century C-Thru Proportion al Scale prefer working fractions purchase balsa local hobby shop dimensioned frac tions other hobby items such music wire seems US Continued page 134 V Building repairs snap Model Magic 7 l Magic Epoxy Plus 8 mm 25% lighter Sands & carves like Basswood Non sagging gap filling super strength Use anywhere two part epoxy used 6 fI oz $895 retail equal 8 oz regular epoxy shrink turn brittle used gasoline diesel fuel offers clarity visual fuel flow Model Magic fuel tubing remains flexible plasticizer migration foul engines exhibits outstanding tear abrasion resistence Tubing tinted red easy identification gasoline & diesel use Available 5ft $249/pkg lOft $479/pkg SOft spools $21 90 Blue Gb-Fuel Tubing Made finest silicone tubing available j Less 1% swelling after 150 hours 15% nitro fuel Available 21/2 5ft packages SOft 5pOOl5y C Inc riD. Red Gas & Diesel Tubing Q Model Magic Gas & Diesel Fuel Tubing will swell fine products available dealer direct Magic Products PO Box 19784 KKP St Paul MN 55119 715/425-1397 Model Magic Filler Balsa Foam & Fiberglasssands exactly like Balsa Super lightweight Superior adhesion Waterproof Nontoxic Use nicks gaps fillets fairings building up large areas 8 fI oz $595 retail February 1986 51 Custom-built fuel tanks two tanks right brass formed over wood block Note left-handed other rlghthanded Theyre instal lation nacelles twinenglned model background tank made fit wide fuselage Foam pads its front surface cushions established course records doing Meanwhile Ken Bates team Michigan have completed course three times last three races Thats 472 miles nonstop flying race comment common among competitors cross-country racing its takes certain stamina talent look sky two hours time same time keep ones ship wandering off Thules doesnt require regimen tation say practicing Precision Dura tion landings F3B-type Speed runs approach Olympics-type dedication Judging newsletters come way clubs organizing racing types events must reason cover Issue says February 1986 however because lead times publishing game will have received before Holidays Whichever case happy holidays peace good lift 1986 Dan Pruss 131 E Pennington Ln Plainfield IL 60544 RC Scale/Wischers Continued page 51 modelers will forever stuck clumsy dual dimensioning systems frac tions decimals metric lurking background further confuse thinking have exposed FAI competition have learned live metrication must agreed much easier calculate metric dimen sions Shelby obtained Proportional Scale art store Price about $4 having 8-in-diameter scale $250 6-in Mrfoil handbook September 1985 column mention Hand book Airfoil Sections Light Air craft Michael S Rice reader asked about source book currently being advertised pages Model Aviation Zenith Aviation Books price $895 catalog number 106401B book contains about 125 airfoils US Belgium England France Germany Italy Included Boe ing Clark NACA RAF Eiffel Goettingen series airfoil shown cross section coordinates various percentages wing chord Curves also given ratio lift drag center pressure travel lift coefficient drag coefficient Modern jet-aircraft-type airfoils included Scale modeler interested reproducing exact airfoil used prototype airfoil curves can plot ted above below mean chord line semi-symmetrical sections shape described percent chord points along chord simple calculator makes short work mathematics tapered wing 16 ribs Ryan SCWs wing NACA 23012 airfoil plotted information book Having seen number Scale models flown successfuly non-scale airfoils would agree exactness airfoil sections absolute necessi ty some personal satisfaction knowing airfoil used model agreement prototype have never found Scale airfoil detrimental performance thick airfoil particularly near wing tips spoils Scale appearance feature may have some benefit achieving approaching Scale speed increasing drag Eyeball airfoils some having full-symmetrical sections quite common models fly well number purists demand Scale ap pearance performance low compared total Scale modelers Custom fuel tanks available space Scale model doesnt always fit shape ready-made fuel tanks have forced accept inevitable task pro ducing custom tanks half models advantage custom tank assures maximum capacity ATTENTION ERS Custom Models Built LLZ 2036 N Thorns Ave S a.Fresno CA 93704 6pmOrder Phone 209 233-1050ask Bill If you LOVE fly HATE build Contact me solution problem Kits Custom Built Order Sanded Ready Cover AndrswsGoldbergGreat PlanesEtc - IFlyWhatIBuild 134 Model Aviation FULL LINE METAL SPECIALISTS EPOXY GLASS COWLS FOR NOSEN PICA SID MORGAN BALSA USA PLATT CONCEPT FLEET HOSTETLER RCM T-CRAFT SHEBER PIUS 8 V SCALE SUPER CUB POKKER 07 BORING P12 P26 F4B2 F4B4 SPARROW HAWK GEE BEE MOD Y MACBRIENS TURBULENT CHRISTEN EAGLE BRISIGHELLAS STARDUSTER II SCALE J3B1 BABY FLYBABY & OTHERS WHEEL PANTS FOR CITABRIA STARDUSTER II PIUS SKYBOLT LIBERTY SPORT CHRISTEN EAGLE P5E HAWK MULLIGAN S OTHERS LARGE SCALE PLANS AVAILABLE Please send $100 complete list WB supply MOdRIRES fibBrglass parts planS WrIts Call US T & D FIBERGLASS SPECIALTIES 3R52B BLOCK GARDEN CITY MI 48136 PHONE 313 421-6358 BRAZED ft HEAT-TREATED WIRE GEARS BE CABANES PHONE 313 261-9064 FAI RUBBER Sizes 1/4 3/16 1/8 3/32 1/16 042 thick pound box Price $1300 FREE 4 oz bottle SLICK rubber lube per box Postpaid UPS USA 65 FF kits mci Starduster Coupe Deville 4 Satellites mow availl Dragmaster Zingo FAI Power Tilka Wakefield P30s 2 pacifier tanks Crocket hooks Slick lube Seelig & KSB timers Front ends 3 prop kits 2 kinds fuse winders kinds hardware Books much 1986 catalog 75 Cal add 6% tax FAl Model Supply U PO BOX 3U TORRANCE CA 50610 Al Featuring fast service qualified people latest equipment including SPECTRUM ANAL YZER AM FM SIGNAL GENERATOR Call Sam Leonard Tony Stillman custom work competition needs stock complete hobby line specializing competition accessories discounted prices 904 478-6745 RADIO SOUTH AUTHORIZED SERVICE CENTER FOR Kruft Pro Line l-I 1 Futaba JR 43 West Nine Mile Rd Pensacola FL 32514 * Futaba Distributor er Inquiries Welcome * minimum space preferred material 005 brass copper sheet A-in OD brass tube fuel fittings flexible silicone fuel pickup tube permanently sealed inside tank weight free end plastic klunk tank hardness brass sheet varies soft annealed hard shim stock expensive Half-hard tempered brass sheet thickness 006 minimum Soft annealed brass 005-in thick suitable tanks dents easily does soft copper clunk weight silicone tube end has enough mass cause dents annealed materials oldest brass tank semi-perma nently sealed inside Emeraude built 1971 silicone tube its attached weight can heard rattles around side has no problem fuel feed must pointed out metal tank should completely emptied fuel after flying session avoid internal corrosion course also plastic tanks tank shaped V-bottom certain can completely emp tied also helps keep weighted pickup tube centered will use last bit fuel end long flight V-bottom slightly dif ficult form flat bottom Some tanks formed around wood block shaped like inverted house brass sheet wrapped around block allowing extra material solder joint cor ner ends also formed around block allowing soldering around edges method prop erly-fitting ends inside wraparound sheet certainty Use steel wool burnish areas will soldered assure flow melted solder wood form convenience necessity sketching end view tank dimensions can determined length wraparound sheet top bottom sides sheet formed over sharp edge such heavy steel ruler After inserting formed ends tank retains its shape Tacksolder material few spots sure squareness before soldering edges Lightly coat areas soldered good soldering paste such Noko rode example join edges 50-50 solder Thats 50% lead 50% tin paste provides instant flow solder metal Tight-fitting joints need small amount solder less weight brass tank made 005-in material will weigh less made high-density polyethylene use tapered steel scriber punch holes tubes should done care avoid oversize hole slight press fit A-in-diameter tube desirable quite easily achieved pushing scriber slowly through brass scriber will flare brass sheet increase contact area solder fillet tanks three tubes fuel feed filling venting hole fuel feed must larger order pass internal silicone tube its clunk weight scrap brass A-in hole punched near its center covers large hole soldered place after inserting weighted tube Brass tubes fill vent can straight bent suit individual stallation convenience emptying tank fourth tube can added apex V-bottom Because almost engines run reliably muffler pressure fuel tank Y-connector made soldered brass tube tank vent tub ing connector installed silicone tube somewhere near point passes close muffler follows silicone fill vent tubes must plugged retain pressure tank Use no 6-32 x machine screw plug line ends tube used emptying tank should plugged times use Custom-building fuel tank permits sorts modifications Brass strips can soldered along tanks edges fit groove runners fuselage giving Continued page 138 ATT- CHEKRXl ON-Board Battery Tester Saves Time. Saves Models BATTOHEK RX-1 $1495 e USA NEW Install RC Models Check receiver battery status press button Small Light 1/2 oz Precise Rugged ORDER TODAY dealer Protune Corp 914 462-6452 PO Box 1808 Poughkeepsie NY 12601 February 1986 135 PATrERN SHIP AS GOOD AS YOU ARE. AYBE BETTER Tick Technician totally functional design combines great flying characteristics ease construc tion good looks first quality kit throughout FIBERGLASS FUSELAGE FOAM CORES BASIC KIT BASIC HARDWARE PKG BASIC KIT. $ 9495 DELUXE KIT 495 See Dealer First RC ScalelWischers Continued page 135 slide-in assembly brass fill tube can have its inner end bent down close proximity V-bottom fuel can pumped out well tank same location tank can made very wide completely fill space wide fuselage Aerobatics affected tank shape weighted pick-up tube follows fuel around inside tank regardless its shape completed tank should cleaned internally lacquer thinner remove solder paste residue Check leaks plugging openings length silicone tube placed re maining tank tube used pressurize tank lung power tank submerged water Look bubbles As alternative supply pressure same manner pinch tube Wait minute two release tube ALL OF THE ABOVE PLUS ALL REQUIRED BALSAS MOTOR MOUNT AND HARDWARE L&L MODEL MFGBV PRODUCTS 513 385-0912 7342 Applerldge Court CincInnatI Ohio 45247 listen rush escaping air Thin brass will balloon slightly pressur ized doesnt stretch leak determine size tank needed calculate capacity formula US fluid ounce equals 1805 cu Cal culate square-inch area end multiply tank length find content cubic inches Divide 1805 find content fluid ounces enough Modify tank dimensions needed until capacity equals need Bob Dolly Wischer S-221 Lapham Peak Rd Delafield WI 53018 RC Old-Timers/Mathews Continued page 53 Auburn NY paper lost RC model called Carl Spare sold him $50 logged hundreds successful flights itand perhaps after moved away good old Dakota Joe Wagner sent very interesting historical overview Buzzerd manu facturer take anything Joe might want use MAN column just have share some highlights years years Ive asked anyone might know just Ken KenHi Hi obviously Hi Johnson Joe tells us Ken Ken Adams investor previously backed Bill Atwood manufacture Champion series engines Hi Johnson coworker Joe Wagner Veco operation Inci dentally company actually Henry Engineering Coand very brief time mercifully called HECO Hi falling out Gil Henry left enter kit business himself Ken Adams financial backing KenHis early kits series rather undistinguished CL models Panther other cats directly compete Vecos Indian series second wave KenHi kits cluded Badger Buzzerd shared common wing being Free Flight other RC about same time Joe Wagner feeling grossly overworked underpaid decided move over KenHi big increase pay decrease work summer 1953 Joe immedi ately set work correct bad diecutting mentioned attempt lighten up structures CL designs Hi trouble CL designs selling well Buzzerd Hi placed much hope proving disaster Hi personally hand-picked packed dozen two Buzzerd kits gave modeler friends Joe doesnt know completed does recall very nega tive responses modelers did such Colby Evett Meanwhile Joe busily trying get Buzzerd kits up quality wood quality terrible because Hi re fused buy balsa same source Veco After took over management High Performance Twin Ducted Fan Airplane Kil Length 1075 span 558 Weight 18-22 lbs Gear Tlrgear retracts mschsnical sir kit product yeats reeearch development keep scais size appearance lot help front good people Heals Air Force Bass Cai,nia 5R71 base Lockheeds beet representative have enact 1112 scale kit Being wood flyable true scale kit available F104 cockpit kit off acale item no can get interior SR7l yet note beginners kit bat very nice build finished product AWESOME Eapect speeds ova 150 ntph 80 parachute option vary nice too full 22 picture photo pelt available real scale buffs Have fun / Designed Turbax Ill Fans4-6 Channel Radio 46 80 Oucted Fan Engines other parto acceosorisa build ropair plane availablo Call write information needed B-Line PA.. UisIsa PO Box 1231 101 AtkInson St RosevUl, CA 95661 AvaNsbh Ease F4 Pheata Psettmer F-Sb Sabre oFS Crusader 0112 lsckcat 916 786-6530 QUAY BARNR MODELS -14 size Falok Rivets aEPOXY/OLASS/FOAM/BALSA SEMIKIT $11995 CONSTRUCTION WITH DRAWINGSKIT$15495 AND DATA FOR FORMULA 120 PYLON SPORT OR STANDOFF 216 777-6172 SCALE FULL OR SEMIKITS e8 10 lbs weight 790 sq wing area 60 2 stroke 12 4 stroke ekit prices plus shipping ecredit cards welcome Ohio residents add 61 % Commia Wind SEMI-KIT $10995 KIT$14495 cOther kits toning 27100 Butternut RidgeNorth Olmnsted Ohio 44070 138 Model Aviation DELUXE KIT 8~LIN rhr Retail price 348 Factory direct price 26250

Scale Bob Dolly Wischer FAI RULES have begun hear sug gestions US Giant Scale advocates also other nations FAI classification established class Scale model Large models interna tional competition always bring mind transportation difficulties have en countered present-day socalled standard-size models have grown size markedly recent past Europeans can have interna tional contests large models transportation model serious matter model its container cross ocean using airline transportation situation changes Airlines frown upon carrying large boxes baggage air freight becomes expensive truly international contest World Championships Giant Scale would appear impractical unless models built disassembled small components questionnaire Dennis Thump ston FAI Scale Committee chairman asked outline AMA rules could used basis establishment Giant Scale world class several years experience Giant Scale compe tition present rules have proved workable FAI rules could follow format FAI weight limit F4C pres ent RC Scale classification has changed seven kg 154 lb effective January 1 1989 present FAI defini tion model sets maximum surface area wing stabilizer combined 150 din2 2325 sq 1614 sq ft maximum area weight RC Scale model would have fairly light wing loading about 15 oz per sq ft None FAI models see contests have loadings less 20 oz because wing areas always considerably less permitted maximum order increase wing area basic definition model would need alteration general agreement FAI bonus system compensate models complex prototypes inherent flight disadvantages has overly generous result has strong trend towards tactic building air craft takes full advantage cumula tive bonusesto practical exclusion other types bonus system estab lished recognized models could built having 35% added flight score Now has actually oc curred real concern about its ef fect contest entries Modelers willing build multi-engine taildragger biplane high bonuses will drop out competition because recog nized inequalities Diminished interest FAI competition will surely follow Ob viously no set rules can created will give models equal chance win Rule-makers can hope ap proach ideal condition Proposals have written reduce impact bonus percentages flight scores Some would seek abolish bonus completely returning era scaled-down ultralight would have winning potential Others would place top limit 15% 20% total cumulative bonus Another proposal would remove bonuses wing configurations since complexities multi-wings no longer considered detrimental flight now recognized models having three George Clap p 1 readies h-scale Fairchild FC-2 flight 85 Nats George Fairchild historian has written about plane both ModelAviation HlstoricalAviation Album Craft spans 88 uses OS 60 power Cover aluminum MonoKate Tom Polapinks Albatross R scaled National Air Space Museum drawings weighs 11% lb uses Salto 12 four-stroker Don Sobbe built 72-in-span Sopwith Pup L original drawings modeled represent prototype Ottawa museum An Enya 80 four-stroker powers Details include over 200 machined parts Bryant Thompsons B-17G originated Royal kit R Four Supertigre 23s power 78-in 9%-lb craft lettering done hand no decals Finish K&B Superpoxy 50 Model Aviation engines actually less hazard ous fly twins basis reducing multi-engine bonus 10% regardless number pro posals will come vote April 1986 FAI session Paris Should accepted effective date rule change will January 1989 Have opinion Lets hear Design aid Enlarging drawings small three-views made easier using circular slide rule intended specifically purpose Shelby Hagberg uses C-Thru PS 80 Proportional Scale pair 8-in-diameter plastic discs mounted concentrically graduated 1 100 inches upper disc rotated over lower upper has window setting scale ratio between three-view drawing size model desired Once set proper ratio dimensions read along periphery discs having reset dimensions less inch three-view drawing necessary convert fraction decimals using decimal equivalent chart example becomes 50 inner disc plac ing decimal point before five inch 50 inch graduations desired dimen sion can read outer scale either fraction converted decimals preference enlarging threeview would use electronic calcula tor set constant multiplication factor use decimal-inch ruler graduated increments /~ 02 transfer dimensions threeview enlarged drawing However recognize everyone adept decimal-inch system has US industry standard past quarter-century C-Thru Proportion al Scale prefer working fractions purchase balsa local hobby shop dimensioned frac tions other hobby items such music wire seems US Continued page 134 V Building repairs snap Model Magic 7 l Magic Epoxy Plus 8 mm 25% lighter Sands & carves like Basswood Non sagging gap filling super strength Use anywhere two part epoxy used 6 fI oz $895 retail equal 8 oz regular epoxy shrink turn brittle used gasoline diesel fuel offers clarity visual fuel flow Model Magic fuel tubing remains flexible plasticizer migration foul engines exhibits outstanding tear abrasion resistence Tubing tinted red easy identification gasoline & diesel use Available 5ft $249/pkg lOft $479/pkg SOft spools $21 90 Blue Gb-Fuel Tubing Made finest silicone tubing available j Less 1% swelling after 150 hours 15% nitro fuel Available 21/2 5ft packages SOft 5pOOl5y C Inc riD. Red Gas & Diesel Tubing Q Model Magic Gas & Diesel Fuel Tubing will swell fine products available dealer direct Magic Products PO Box 19784 KKP St Paul MN 55119 715/425-1397 Model Magic Filler Balsa Foam & Fiberglasssands exactly like Balsa Super lightweight Superior adhesion Waterproof Nontoxic Use nicks gaps fillets fairings building up large areas 8 fI oz $595 retail February 1986 51 Custom-built fuel tanks two tanks right brass formed over wood block Note left-handed other rlghthanded Theyre instal lation nacelles twinenglned model background tank made fit wide fuselage Foam pads its front surface cushions established course records doing Meanwhile Ken Bates team Michigan have completed course three times last three races Thats 472 miles nonstop flying race comment common among competitors cross-country racing its takes certain stamina talent look sky two hours time same time keep ones ship wandering off Thules doesnt require regimen tation say practicing Precision Dura tion landings F3B-type Speed runs approach Olympics-type dedication Judging newsletters come way clubs organizing racing types events must reason cover Issue says February 1986 however because lead times publishing game will have received before Holidays Whichever case happy holidays peace good lift 1986 Dan Pruss 131 E Pennington Ln Plainfield IL 60544 RC Scale/Wischers Continued page 51 modelers will forever stuck clumsy dual dimensioning systems frac tions decimals metric lurking background further confuse thinking have exposed FAI competition have learned live metrication must agreed much easier calculate metric dimen sions Shelby obtained Proportional Scale art store Price about $4 having 8-in-diameter scale $250 6-in Mrfoil handbook September 1985 column mention Hand book Airfoil Sections Light Air craft Michael S Rice reader asked about source book currently being advertised pages Model Aviation Zenith Aviation Books price $895 catalog number 106401B book contains about 125 airfoils US Belgium England France Germany Italy Included Boe ing Clark NACA RAF Eiffel Goettingen series airfoil shown cross section coordinates various percentages wing chord Curves also given ratio lift drag center pressure travel lift coefficient drag coefficient Modern jet-aircraft-type airfoils included Scale modeler interested reproducing exact airfoil used prototype airfoil curves can plot ted above below mean chord line semi-symmetrical sections shape described percent chord points along chord simple calculator makes short work mathematics tapered wing 16 ribs Ryan SCWs wing NACA 23012 airfoil plotted information book Having seen number Scale models flown successfuly non-scale airfoils would agree exactness airfoil sections absolute necessi ty some personal satisfaction knowing airfoil used model agreement prototype have never found Scale airfoil detrimental performance thick airfoil particularly near wing tips spoils Scale appearance feature may have some benefit achieving approaching Scale speed increasing drag Eyeball airfoils some having full-symmetrical sections quite common models fly well number purists demand Scale ap pearance performance low compared total Scale modelers Custom fuel tanks available space Scale model doesnt always fit shape ready-made fuel tanks have forced accept inevitable task pro ducing custom tanks half models advantage custom tank assures maximum capacity ATTENTION ERS Custom Models Built LLZ 2036 N Thorns Ave S a.Fresno CA 93704 6pmOrder Phone 209 233-1050ask Bill If you LOVE fly HATE build Contact me solution problem Kits Custom Built Order Sanded Ready Cover AndrswsGoldbergGreat PlanesEtc - IFlyWhatIBuild 134 Model Aviation FULL LINE METAL SPECIALISTS EPOXY GLASS COWLS FOR NOSEN PICA SID MORGAN BALSA USA PLATT CONCEPT FLEET HOSTETLER RCM T-CRAFT SHEBER PIUS 8 V SCALE SUPER CUB POKKER 07 BORING P12 P26 F4B2 F4B4 SPARROW HAWK GEE BEE MOD Y MACBRIENS TURBULENT CHRISTEN EAGLE BRISIGHELLAS STARDUSTER II SCALE J3B1 BABY FLYBABY & OTHERS WHEEL PANTS FOR CITABRIA STARDUSTER II PIUS SKYBOLT LIBERTY SPORT CHRISTEN EAGLE P5E HAWK MULLIGAN S OTHERS LARGE SCALE PLANS AVAILABLE Please send $100 complete list WB supply MOdRIRES fibBrglass parts planS WrIts Call US T & D FIBERGLASS SPECIALTIES 3R52B BLOCK GARDEN CITY MI 48136 PHONE 313 421-6358 BRAZED ft HEAT-TREATED WIRE GEARS BE CABANES PHONE 313 261-9064 FAI RUBBER Sizes 1/4 3/16 1/8 3/32 1/16 042 thick pound box Price $1300 FREE 4 oz bottle SLICK rubber lube per box Postpaid UPS USA 65 FF kits mci Starduster Coupe Deville 4 Satellites mow availl Dragmaster Zingo FAI Power Tilka Wakefield P30s 2 pacifier tanks Crocket hooks Slick lube Seelig & KSB timers Front ends 3 prop kits 2 kinds fuse winders kinds hardware Books much 1986 catalog 75 Cal add 6% tax FAl Model Supply U PO BOX 3U TORRANCE CA 50610 Al Featuring fast service qualified people latest equipment including SPECTRUM ANAL YZER AM FM SIGNAL GENERATOR Call Sam Leonard Tony Stillman custom work competition needs stock complete hobby line specializing competition accessories discounted prices 904 478-6745 RADIO SOUTH AUTHORIZED SERVICE CENTER FOR Kruft Pro Line l-I 1 Futaba JR 43 West Nine Mile Rd Pensacola FL 32514 * Futaba Distributor er Inquiries Welcome * minimum space preferred material 005 brass copper sheet A-in OD brass tube fuel fittings flexible silicone fuel pickup tube permanently sealed inside tank weight free end plastic klunk tank hardness brass sheet varies soft annealed hard shim stock expensive Half-hard tempered brass sheet thickness 006 minimum Soft annealed brass 005-in thick suitable tanks dents easily does soft copper clunk weight silicone tube end has enough mass cause dents annealed materials oldest brass tank semi-perma nently sealed inside Emeraude built 1971 silicone tube its attached weight can heard rattles around side has no problem fuel feed must pointed out metal tank should completely emptied fuel after flying session avoid internal corrosion course also plastic tanks tank shaped V-bottom certain can completely emp tied also helps keep weighted pickup tube centered will use last bit fuel end long flight V-bottom slightly dif ficult form flat bottom Some tanks formed around wood block shaped like inverted house brass sheet wrapped around block allowing extra material solder joint cor ner ends also formed around block allowing soldering around edges method prop erly-fitting ends inside wraparound sheet certainty Use steel wool burnish areas will soldered assure flow melted solder wood form convenience necessity sketching end view tank dimensions can determined length wraparound sheet top bottom sides sheet formed over sharp edge such heavy steel ruler After inserting formed ends tank retains its shape Tacksolder material few spots sure squareness before soldering edges Lightly coat areas soldered good soldering paste such Noko rode example join edges 50-50 solder Thats 50% lead 50% tin paste provides instant flow solder metal Tight-fitting joints need small amount solder less weight brass tank made 005-in material will weigh less made high-density polyethylene use tapered steel scriber punch holes tubes should done care avoid oversize hole slight press fit A-in-diameter tube desirable quite easily achieved pushing scriber slowly through brass scriber will flare brass sheet increase contact area solder fillet tanks three tubes fuel feed filling venting hole fuel feed must larger order pass internal silicone tube its clunk weight scrap brass A-in hole punched near its center covers large hole soldered place after inserting weighted tube Brass tubes fill vent can straight bent suit individual stallation convenience emptying tank fourth tube can added apex V-bottom Because almost engines run reliably muffler pressure fuel tank Y-connector made soldered brass tube tank vent tub ing connector installed silicone tube somewhere near point passes close muffler follows silicone fill vent tubes must plugged retain pressure tank Use no 6-32 x machine screw plug line ends tube used emptying tank should plugged times use Custom-building fuel tank permits sorts modifications Brass strips can soldered along tanks edges fit groove runners fuselage giving Continued page 138 ATT- CHEKRXl ON-Board Battery Tester Saves Time. Saves Models BATTOHEK RX-1 $1495 e USA NEW Install RC Models Check receiver battery status press button Small Light 1/2 oz Precise Rugged ORDER TODAY dealer Protune Corp 914 462-6452 PO Box 1808 Poughkeepsie NY 12601 February 1986 135 PATrERN SHIP AS GOOD AS YOU ARE. AYBE BETTER Tick Technician totally functional design combines great flying characteristics ease construc tion good looks first quality kit throughout FIBERGLASS FUSELAGE FOAM CORES BASIC KIT BASIC HARDWARE PKG BASIC KIT. $ 9495 DELUXE KIT 495 See Dealer First RC ScalelWischers Continued page 135 slide-in assembly brass fill tube can have its inner end bent down close proximity V-bottom fuel can pumped out well tank same location tank can made very wide completely fill space wide fuselage Aerobatics affected tank shape weighted pick-up tube follows fuel around inside tank regardless its shape completed tank should cleaned internally lacquer thinner remove solder paste residue Check leaks plugging openings length silicone tube placed re maining tank tube used pressurize tank lung power tank submerged water Look bubbles As alternative supply pressure same manner pinch tube Wait minute two release tube ALL OF THE ABOVE PLUS ALL REQUIRED BALSAS MOTOR MOUNT AND HARDWARE L&L MODEL MFGBV PRODUCTS 513 385-0912 7342 Applerldge Court CincInnatI Ohio 45247 listen rush escaping air Thin brass will balloon slightly pressur ized doesnt stretch leak determine size tank needed calculate capacity formula US fluid ounce equals 1805 cu Cal culate square-inch area end multiply tank length find content cubic inches Divide 1805 find content fluid ounces enough Modify tank dimensions needed until capacity equals need Bob Dolly Wischer S-221 Lapham Peak Rd Delafield WI 53018 RC Old-Timers/Mathews Continued page 53 Auburn NY paper lost RC model called Carl Spare sold him $50 logged hundreds successful flights itand perhaps after moved away good old Dakota Joe Wagner sent very interesting historical overview Buzzerd manu facturer take anything Joe might want use MAN column just have share some highlights years years Ive asked anyone might know just Ken KenHi Hi obviously Hi Johnson Joe tells us Ken Ken Adams investor previously backed Bill Atwood manufacture Champion series engines Hi Johnson coworker Joe Wagner Veco operation Inci dentally company actually Henry Engineering Coand very brief time mercifully called HECO Hi falling out Gil Henry left enter kit business himself Ken Adams financial backing KenHis early kits series rather undistinguished CL models Panther other cats directly compete Vecos Indian series second wave KenHi kits cluded Badger Buzzerd shared common wing being Free Flight other RC about same time Joe Wagner feeling grossly overworked underpaid decided move over KenHi big increase pay decrease work summer 1953 Joe immedi ately set work correct bad diecutting mentioned attempt lighten up structures CL designs Hi trouble CL designs selling well Buzzerd Hi placed much hope proving disaster Hi personally hand-picked packed dozen two Buzzerd kits gave modeler friends Joe doesnt know completed does recall very nega tive responses modelers did such Colby Evett Meanwhile Joe busily trying get Buzzerd kits up quality wood quality terrible because Hi re fused buy balsa same source Veco After took over management High Performance Twin Ducted Fan Airplane Kil Length 1075 span 558 Weight 18-22 lbs Gear Tlrgear retracts mschsnical sir kit product yeats reeearch development keep scais size appearance lot help front good people Heals Air Force Bass Cai,nia 5R71 base Lockheeds beet representative have enact 1112 scale kit Being wood flyable true scale kit available F104 cockpit kit off acale item no can get interior SR7l yet note beginners kit bat very nice build finished product AWESOME Eapect speeds ova 150 ntph 80 parachute option vary nice too full 22 picture photo pelt available real scale buffs Have fun / Designed Turbax Ill Fans4-6 Channel Radio 46 80 Oucted Fan Engines other parto acceosorisa build ropair plane availablo Call write information needed B-Line PA.. UisIsa PO Box 1231 101 AtkInson St RosevUl, CA 95661 AvaNsbh Ease F4 Pheata Psettmer F-Sb Sabre oFS Crusader 0112 lsckcat 916 786-6530 QUAY BARNR MODELS -14 size Falok Rivets aEPOXY/OLASS/FOAM/BALSA SEMIKIT $11995 CONSTRUCTION WITH DRAWINGSKIT$15495 AND DATA FOR FORMULA 120 PYLON SPORT OR STANDOFF 216 777-6172 SCALE FULL OR SEMIKITS e8 10 lbs weight 790 sq wing area 60 2 stroke 12 4 stroke ekit prices plus shipping ecredit cards welcome Ohio residents add 61 % Commia Wind SEMI-KIT $10995 KIT$14495 cOther kits toning 27100 Butternut RidgeNorth Olmnsted Ohio 44070 138 Model Aviation DELUXE KIT 8~LIN rhr Retail price 348 Factory direct price 26250