Control Line Racing John Ballard RACING 1986 finally winding down after involved think very successful year thing certain racing Midwest has met improved contestant participation new modelers entering Sport Racing Big Goodyear events two major events appear growing Scale Racing Midwest Sport Race Midwestern contest summer minimum 12 20 entrants events Participant levels Rat Slow Rat about same last year sophisticated equipment required well experienced pilots new blood events limited Finale 700-lap Sport Race September brings slight color trees Midwest also signifies grand finale Sport Racing form 700-lap event flown year Chicago area typical Midwest Sport Race rules mandatory exception 700-lap event seven pit stops mandatory tests engine speed durability fuel flow tank keeps pit men toes pitting hot Sport Race engine has running all-out nearly 100 laps pit year 20 entries event think two three made full 700 laps end day fair number worn-out pilots lot empty fuel jugs although everyone great time some excellent race times around 32 minutes seven pit stops 700 laps computes some excellent pitting some engines will run day long dominant engine year once again K&B side-exhaust plain-bearing front-intake 35 engine seems have less dominated event its inception since its singie-ring piston allows engine start its hot run consistently fast required number laps Engine tips seem indicate engines biggest problem area connecting rod standard rod has no bushings either end should replaced double-bushed rod side-exhaust 40 machined bar stock used engines low-nitro fuel virtually break proof Also venturi sizes must controlled very closely obtain good speed along ability get very positive fuel draw Obviously fit ring piston liner must nearperfect achieve maximum horsepower 18-odd K&B 35s run years event 16 equipped chromed liners piston ring lapped fit cylinder bore very precisely approximately 002-in ring end-gap variety propellers tried old 8 x 8 Kelly fiberglass model seemed best overall job matching airspeed engine rpm Rules changes 1988-89 has much talk changing rules Control Line Rat Slow Rat Racing Several rules-change proposals have submitted current cycle reduce engine displacement Rat Slow Rat maximum 21 cu appear several advo cates proposal have heard voices indicating want keep rules two premiere events Several readers have written subject would certainly like hear opinion proposed rule changes Fiberglass propellers imperative purchase fiberglass racing pro peller observe quantity placement fiberglass strands use strong light shining through propeller some cases manu facturer has woven strands tightly enough hub area have several failures resulting blades being shed flight engine taking off shaft run considerable vibration until pilot could shut engine off wanted use photo 8 x 8 propellers actually started shear blade result hub being too soft melting heat being transferred through shaft/nut assembly Unfortunately photo too blurry use Fortunately pilot observed what happening shut engine down fuel shutoff before engine airframe damaged Any time can smell epoxy Continued page 166 70 Model Aviation Bob Oge refitting Cox 049 piston/rod assembly Thetool isavailabiefrom Kustom Kraftsmanship vital 1/2A racers use after couple hot runs connecting rod/piston ball joint reset rod gets loose eventually gets enough end play fail Dave Katzmeyer holds Fast Rat father flips prop Daves hot glove contacts wing fuselage cowling other planes Dads heavy glove prevents finger damage starting hot K&B 40 Rat engine Jill Dziak Wizardette cranks up Rossi 15-powered Pink Falcon Scale Racer CL Racing events entrant must either start engine fly plane Father-in law Larry Wiz Dziak assists Firel Jerry Meyer did again 86caught Midwest Sport Racer features K&8 35 Slow Rat fire refueling Bob sleeve bearing side exhaust Rectangular Heywoods portable extinguisher douses tank used has uniflow venting Note spilled fuel pavement Notetheventtube behindtheenglne point inviting clear-flame alcohol fIre ing directly airstream Bought Colored Fuel Line YOU DEFINITELY PAID TOO MUCH Pay Fancy Colors ON ENGINE DETERMINES REQUIRED TUBING DIAMETER EXTRA LARGE 125 iD 250 001 SH-616 2FTPKG $135 SII-661 2$ FT ROLL $1325 LARGE 093 10- 215 GD SH-2901 FT PEG$ 89 SH-646 2 FT PKG 111$ SN-291 2$ FT ROLL $1295 MEDIUM 062 ID- 156 ODl 54-2851 FT PKG$ 90 SH-545 2 FT PKG $110 SN 28925FT ROLL. $1195 FUEL FITTING SIZE * Heat-Proof will melt resting dIrectly hotteSt part running model engine Wont Harden Fuelil'~ 9111 Resistant Cuts TearsNOT FOR GASOLINE Sig first introduce silicone fuel line tubing model aviation market way back 1964 premium tubing still comes its original natural white color Some competitors would have believe ad ding blue red yellow dye tubing charging higher price makes product better dont believe Sigs original silicone fuel tubing has important characteristics need quality fuel line None Better Any Price OR COLOR See dealer first available order direct Call 800-247-5003 toll free orders Latest Catalog $300 SIG MANUFACTURING CO INCMontezuma IA 50171 Say8 th8t old TinierjtGI st 550115 Gte1W$OflFrom this. peEt VtUQ. 1-eES TaOtS Mole 4 Ignition Engine Parts Only Over 600 items Send $200 current catalog performances Championships showed aeromodeling sport can unite competitors countries no matter good individual may perform love talking about model airplanes should also remembered dont go wont learn learning essential part improv ing performance contestants finished following order best speed kilometers per hour listed 1 Kalmikov USSR29363 2 Piskalev USSR28800 3 Mult Hungary 287534 Dodge USA28639 5 Choj nacki Poland28639 6 Szegadi Hungary 285267 KohaniukUSSR28191 8 Molnar Hungary28059 9 Rachwal Po land27993 10 Schuette USA27734 11 Novakowski Poland27522 12 Ding PRC27231 13 Zhu PRC27231 14 HalmanUK27 149 15 LiPRC 27027 16 Assen Bulgaria26905 17 Kabakov Bulgaria26745 18 Kales Yugo slavia26548 19 Bianchi Brazil26 181 20 Matilainin Finland25714 21 Schmidt FRG25622 22 Hrustanovic Yugo slavia255 34 23 Hiern Australia25495 24 Rosenhan FRG25263 25 Magne France25 174 26 Brewin UK25 122 27 Bilat Switzerland24879 28 Borovac Yugoslavia2481O 29 Borer Switzerland 2474230 Bontcev Bulgaria24590 31 Metkemeyer Netherlands245 2332 New ton USA24406 33 McGalddery UK 2435734 Bertin Brazil24324 35 Fall gren Sweden24096 36 Christen Switzer land23952 37 Rietbergen Netherlands 23952 38 Kjelberg Sweden23809 39 Valo Finland23560 40 Wake Australia Great Planes Big Stiks offer quality ease r assembly superior flighf characteristics never before available stik style models Features include notched interlocking die machine-cut balsa plywood parts fast accurate construc tion hardware Additional hardware included either tricycle talidragger configuration Three versions available 53 span 20 size 59 span 40 size 60 size require 4-channel radio Available al KATPIAftIIi Leading Dealers ~JELE Nalionwide P0 5ov721 U va IL 61801- 23047 41 Fagerstrom Finland22929 42 Hanting Australia22332 43 Pinho Brazil0 Thanks once again David Brewin member UK Speed team report Gene Hempel 301 N Yale Dr Garland TX 75042 CL Racing/Ballard Continued page 70 fiberglass/epoxy prop means epoxy curing agent mixture improper prop should sent back manufacturer refund/replacement addition inspec tion fiberglass strands blade shows minimum amount strands hub area prop will certalnly prone shrinking under heat pressure high-winding Rat engine end flying day always take props Ive used inspect front strong light see internal cracks alr bubbles may produce crack subsequent failure also look hairline cracks around bubbles locked epoxy could lead blade failure As always solicit comments ideas photos John C Ballard 10102 Kimblewick Dr Louisville KY 40223 responding advertisers mention read about ModelAviation Wi Idf ref Sackett Continued page 75 carefully taCk-glue position using few drops cyanoacrylate CyA Draw outline fuselage rough-cut toshapeNexttakeapieceoflx lx 10-in medium balsa tack-glue position tailpiece outer shape fuselage can sanded final shape leaving area re movable cowl unfinished Break assembly apart clean pan mount enginetaping up openings keep dust dirt out until shaping work completed Locate four tie-down holes drill out little oversize accommodate brass tubing glue tubes place slowdrying epoxy such Hobbypoxy 2 ensure accuracy wax tie-down bolts insert position gluing tubes Use elastic bands hold pan crutch position Let whole thing dry least 24 hours Take assembly apart use coping saw cut out center crutch outline shown drawing Decide whether wish enclose engine lugs completely fuselage cut around suggest enclose engine completely tends weaken crutch severely otherwise slight amount material will have removed lugs Rossi 15 accomplish Cut lugs back ~ia inside pan leaving enough material crutch adequate strength cowl formed blank straight-grained basswcod prefer wood cowl over fiberglass lay-up better vibration-damping strength Start cutting out engine hole diameter Ys6 larger head Use circle cutter rough-clearance inside allow cowl accept engine Rough-shape outside approximately er around shown drawing tack-glue crutch blend rest fuselage Break apart install pipe clearance inside ap proximate thickness Y32 in pipe area front should solid 166 Model Aviation FIBERGLASS COWLS 70 cowls eelpants Sig Pica Top-Flue Jesce Nosen PIlot Stafford Radials Bebrens Garmhausen W E Tech other kits plans One-piece laminated construction handlaid fiberglass strong lightweight Send SASE price list please inclpde names models interested parts br call between 9AM o PM EOT informatIon COO ordering hope hear veul FIBERGLASS 703 890-6017 iI1lept~tii Ba 530 Geodview VA 24895
Edition: Model Aviation - 1987/01
Page Numbers: 70, 166
Control Line Racing John Ballard RACING 1986 finally winding down after involved think very successful year thing certain racing Midwest has met improved contestant participation new modelers entering Sport Racing Big Goodyear events two major events appear growing Scale Racing Midwest Sport Race Midwestern contest summer minimum 12 20 entrants events Participant levels Rat Slow Rat about same last year sophisticated equipment required well experienced pilots new blood events limited Finale 700-lap Sport Race September brings slight color trees Midwest also signifies grand finale Sport Racing form 700-lap event flown year Chicago area typical Midwest Sport Race rules mandatory exception 700-lap event seven pit stops mandatory tests engine speed durability fuel flow tank keeps pit men toes pitting hot Sport Race engine has running all-out nearly 100 laps pit year 20 entries event think two three made full 700 laps end day fair number worn-out pilots lot empty fuel jugs although everyone great time some excellent race times around 32 minutes seven pit stops 700 laps computes some excellent pitting some engines will run day long dominant engine year once again K&B side-exhaust plain-bearing front-intake 35 engine seems have less dominated event its inception since its singie-ring piston allows engine start its hot run consistently fast required number laps Engine tips seem indicate engines biggest problem area connecting rod standard rod has no bushings either end should replaced double-bushed rod side-exhaust 40 machined bar stock used engines low-nitro fuel virtually break proof Also venturi sizes must controlled very closely obtain good speed along ability get very positive fuel draw Obviously fit ring piston liner must nearperfect achieve maximum horsepower 18-odd K&B 35s run years event 16 equipped chromed liners piston ring lapped fit cylinder bore very precisely approximately 002-in ring end-gap variety propellers tried old 8 x 8 Kelly fiberglass model seemed best overall job matching airspeed engine rpm Rules changes 1988-89 has much talk changing rules Control Line Rat Slow Rat Racing Several rules-change proposals have submitted current cycle reduce engine displacement Rat Slow Rat maximum 21 cu appear several advo cates proposal have heard voices indicating want keep rules two premiere events Several readers have written subject would certainly like hear opinion proposed rule changes Fiberglass propellers imperative purchase fiberglass racing pro peller observe quantity placement fiberglass strands use strong light shining through propeller some cases manu facturer has woven strands tightly enough hub area have several failures resulting blades being shed flight engine taking off shaft run considerable vibration until pilot could shut engine off wanted use photo 8 x 8 propellers actually started shear blade result hub being too soft melting heat being transferred through shaft/nut assembly Unfortunately photo too blurry use Fortunately pilot observed what happening shut engine down fuel shutoff before engine airframe damaged Any time can smell epoxy Continued page 166 70 Model Aviation Bob Oge refitting Cox 049 piston/rod assembly Thetool isavailabiefrom Kustom Kraftsmanship vital 1/2A racers use after couple hot runs connecting rod/piston ball joint reset rod gets loose eventually gets enough end play fail Dave Katzmeyer holds Fast Rat father flips prop Daves hot glove contacts wing fuselage cowling other planes Dads heavy glove prevents finger damage starting hot K&B 40 Rat engine Jill Dziak Wizardette cranks up Rossi 15-powered Pink Falcon Scale Racer CL Racing events entrant must either start engine fly plane Father-in law Larry Wiz Dziak assists Firel Jerry Meyer did again 86caught Midwest Sport Racer features K&8 35 Slow Rat fire refueling Bob sleeve bearing side exhaust Rectangular Heywoods portable extinguisher douses tank used has uniflow venting Note spilled fuel pavement Notetheventtube behindtheenglne point inviting clear-flame alcohol fIre ing directly airstream Bought Colored Fuel Line YOU DEFINITELY PAID TOO MUCH Pay Fancy Colors ON ENGINE DETERMINES REQUIRED TUBING DIAMETER EXTRA LARGE 125 iD 250 001 SH-616 2FTPKG $135 SII-661 2$ FT ROLL $1325 LARGE 093 10- 215 GD SH-2901 FT PEG$ 89 SH-646 2 FT PKG 111$ SN-291 2$ FT ROLL $1295 MEDIUM 062 ID- 156 ODl 54-2851 FT PKG$ 90 SH-545 2 FT PKG $110 SN 28925FT ROLL. $1195 FUEL FITTING SIZE * Heat-Proof will melt resting dIrectly hotteSt part running model engine Wont Harden Fuelil'~ 9111 Resistant Cuts TearsNOT FOR GASOLINE Sig first introduce silicone fuel line tubing model aviation market way back 1964 premium tubing still comes its original natural white color Some competitors would have believe ad ding blue red yellow dye tubing charging higher price makes product better dont believe Sigs original silicone fuel tubing has important characteristics need quality fuel line None Better Any Price OR COLOR See dealer first available order direct Call 800-247-5003 toll free orders Latest Catalog $300 SIG MANUFACTURING CO INCMontezuma IA 50171 Say8 th8t old TinierjtGI st 550115 Gte1W$OflFrom this. peEt VtUQ. 1-eES TaOtS Mole 4 Ignition Engine Parts Only Over 600 items Send $200 current catalog performances Championships showed aeromodeling sport can unite competitors countries no matter good individual may perform love talking about model airplanes should also remembered dont go wont learn learning essential part improv ing performance contestants finished following order best speed kilometers per hour listed 1 Kalmikov USSR29363 2 Piskalev USSR28800 3 Mult Hungary 287534 Dodge USA28639 5 Choj nacki Poland28639 6 Szegadi Hungary 285267 KohaniukUSSR28191 8 Molnar Hungary28059 9 Rachwal Po land27993 10 Schuette USA27734 11 Novakowski Poland27522 12 Ding PRC27231 13 Zhu PRC27231 14 HalmanUK27 149 15 LiPRC 27027 16 Assen Bulgaria26905 17 Kabakov Bulgaria26745 18 Kales Yugo slavia26548 19 Bianchi Brazil26 181 20 Matilainin Finland25714 21 Schmidt FRG25622 22 Hrustanovic Yugo slavia255 34 23 Hiern Australia25495 24 Rosenhan FRG25263 25 Magne France25 174 26 Brewin UK25 122 27 Bilat Switzerland24879 28 Borovac Yugoslavia2481O 29 Borer Switzerland 2474230 Bontcev Bulgaria24590 31 Metkemeyer Netherlands245 2332 New ton USA24406 33 McGalddery UK 2435734 Bertin Brazil24324 35 Fall gren Sweden24096 36 Christen Switzer land23952 37 Rietbergen Netherlands 23952 38 Kjelberg Sweden23809 39 Valo Finland23560 40 Wake Australia Great Planes Big Stiks offer quality ease r assembly superior flighf characteristics never before available stik style models Features include notched interlocking die machine-cut balsa plywood parts fast accurate construc tion hardware Additional hardware included either tricycle talidragger configuration Three versions available 53 span 20 size 59 span 40 size 60 size require 4-channel radio Available al KATPIAftIIi Leading Dealers ~JELE Nalionwide P0 5ov721 U va IL 61801- 23047 41 Fagerstrom Finland22929 42 Hanting Australia22332 43 Pinho Brazil0 Thanks once again David Brewin member UK Speed team report Gene Hempel 301 N Yale Dr Garland TX 75042 CL Racing/Ballard Continued page 70 fiberglass/epoxy prop means epoxy curing agent mixture improper prop should sent back manufacturer refund/replacement addition inspec tion fiberglass strands blade shows minimum amount strands hub area prop will certalnly prone shrinking under heat pressure high-winding Rat engine end flying day always take props Ive used inspect front strong light see internal cracks alr bubbles may produce crack subsequent failure also look hairline cracks around bubbles locked epoxy could lead blade failure As always solicit comments ideas photos John C Ballard 10102 Kimblewick Dr Louisville KY 40223 responding advertisers mention read about ModelAviation Wi Idf ref Sackett Continued page 75 carefully taCk-glue position using few drops cyanoacrylate CyA Draw outline fuselage rough-cut toshapeNexttakeapieceoflx lx 10-in medium balsa tack-glue position tailpiece outer shape fuselage can sanded final shape leaving area re movable cowl unfinished Break assembly apart clean pan mount enginetaping up openings keep dust dirt out until shaping work completed Locate four tie-down holes drill out little oversize accommodate brass tubing glue tubes place slowdrying epoxy such Hobbypoxy 2 ensure accuracy wax tie-down bolts insert position gluing tubes Use elastic bands hold pan crutch position Let whole thing dry least 24 hours Take assembly apart use coping saw cut out center crutch outline shown drawing Decide whether wish enclose engine lugs completely fuselage cut around suggest enclose engine completely tends weaken crutch severely otherwise slight amount material will have removed lugs Rossi 15 accomplish Cut lugs back ~ia inside pan leaving enough material crutch adequate strength cowl formed blank straight-grained basswcod prefer wood cowl over fiberglass lay-up better vibration-damping strength Start cutting out engine hole diameter Ys6 larger head Use circle cutter rough-clearance inside allow cowl accept engine Rough-shape outside approximately er around shown drawing tack-glue crutch blend rest fuselage Break apart install pipe clearance inside ap proximate thickness Y32 in pipe area front should solid 166 Model Aviation FIBERGLASS COWLS 70 cowls eelpants Sig Pica Top-Flue Jesce Nosen PIlot Stafford Radials Bebrens Garmhausen W E Tech other kits plans One-piece laminated construction handlaid fiberglass strong lightweight Send SASE price list please inclpde names models interested parts br call between 9AM o PM EOT informatIon COO ordering hope hear veul FIBERGLASS 703 890-6017 iI1lept~tii Ba 530 Geodview VA 24895