Control Line Navy Carrier Dick Perry PROFILE KITS Although have always kits available Profile Carrier event Scale classes have no kits designed specifically Profile Carrier since GS kits available few years ago Sterlings Hellcat though designed Carrier competition can easily adapted evenL Two other Sterling kits long out production also well-suited Profile Carrier competition P-5 1 Mustang qualifies bonus points changes configuration Yak-9 minor modifications can become Bell Airabonita Both models small comparison other 35-sized profile models like Ringmaster slightly larger 300-sq-in minimum wing area requirement Profile Carrier build up light models have sheet-balsa trailing edges can converted flaps very easily kits harder find GS kits because have out production longer because legal Old-Time Stunt Fortunately us P-Si Yak-9 have enough popularity someone has de cided produce replicas Sterling kits know manufacturer kits available J&J Sales 709 Crescent Sunnyside WA 98944 Exhaust deflector common problem rear-exhaust engines keeping hot exhaust gases burning model often problem Class Class II models hitting fuel tank Profile model design exhaust deflector shown photos sent Orin Humphries another modeler name have yet find files after recent move South Dakota developed exhaust extension copper coupling used water pipes construction details apparent photographs Cost coupling purchased less quarter local hardware store Construction time under 15 minutes Weight negligible Engine speed control Suction fuel systems required Profile Carrier very easy work produce reliable idle carburetors available today very effective can used alone engines have used carbu retors Fox Perry no relation Supertigre OS form exhaust restrictor good results have experience K&B engines users K&B 58cc engine have exhaust baffles installed engine may exception contestants using larger carburetors increase power output reducing air resist ance through intake As venturi size increased fuel draw throttle open de creases until point reached some modelers forced take off partial throttle avoid having engine sag quit takeoff Under such conditions carburetor may able produce effective idle because extreme difference fuel draw between open closed throttle positions increase fuel draw engine idled down great fuel-metering system cannot compensate adequately such cases addition exhaust baffle effective enough serve throttle can improve idle considerably relieving carburetor some responsibility control engine speed near idle exhaust baffle allows larger carburetor opening idle corresponding change fuel draw changes fuel draw reduced something less radical fuel meter carburetor can handle mixture requirements much adequately carburetor alone used engine speed control exhaust baffle has used engine speed control Carrier competition longer other device Bob Smurthwaite designer J Roberts control systems responsible GS kits/bellcranks/handies also responsible Vari-Speed method engine speed control Van-Speed slide-type exhaust restrictor used conjunction standard suction intake venturi device very simple very effective As restrictor increased exhaust pressure engine slowed down Slower engine speed reduced fuel draw through venturi fuel flow decreased proportionally No fuel meter required quest increased performance resulted introduction larger intakes need use pressurized fuel systems provide reliable fuel flow pressure fuel system used exhaust restrictor alone will result flooded engine engine speed reduced solve problem fuel meter developed reduce fuel flow exhaust restrictor closed Bill Johnson generally credited first suc cessful design Harry Higley designed up dated version fuel meter few years ago currently available LeRoy Cordes 1412 West Hood Chicago IL 60660 fuel meter exhaust baffle can very effective engine speed control pressure fuel system system allows wide-open intake maximum power also results lot fuel being blown out large intake engine idles large carburetor designed use pump can used pressure fuel system exhaust baffle As suction system reliable idles can achieved flooding middle range throttle using carburetor fuel-metering device airflow restrictor Reducing intake area too much engine speed decreases can cause crankcase pressure being used fuel tank pressurization source drop point will actually draw fuel engine through crankcase pressure line exhaust slide shown photograph classic design made piece feeler gauge material inserted slot cut exhaust stack side-exhaust engine particular installa tion done entirely hand use jigs some method ensuring slots front back exhaust stack perfectly parallel desirable effective slot exhaust stack should fit slide Continued page 160 62 Model Aviation Orin Humphrles exhaust deflector rear- Herestheexhaustdeflectorlnstalied Itwill exhaust engines readily made protect Class II fuselage burning copper plumbing fitting hacksaw ade- Profile fuel tank overheating quate aithough Dremel tool cutoff wheel makes quick work project exhaust butterfly-type restrictor K&B useful 40-size engines its instailed OS 46 Exhaust restrictors probably oldest form engine speed control glow en gines Thisistheciasslcexhaustslideoften used conjunction fuel meter described column also useful conventional carburetors homemade steel feeler-gauge material Y ROAMIN RESEARCH P0 Box 104 Dept 096-Il Yale MIch 8097 2 Ideal Power Pock Connector electrIC planes cars boats Designed high vibrat ion environment Cycled ten thousand times electrical failure tiEd Anderson Power Products Inc SORRY NO PERSONAL CHECKS OR COD ORDERS Only certified checks money orders accepted Minimum order $1000 tar three packages 4 Powerpoles $300 per package plus $100 ship ping handling CT residents add 750/ sales tax Prices subject change notice Dealer Inquiries Invited turther intormation dealer prices send SASE Bus Card SERMOS RIC SNAP CONNECTORS Cedar Corners Station Box 16787 Stamford CT 06905 attractive airplane Ive landed upside down several times date zero damage Less noticeable equally valuable addition -in balsa tripler inside nose applied over Lite-Ply doubler Profiles notorious being subject engine vibration wing/fuselage joint leading edge provides almost guaranteed stress crack additional area highstress joint pays big dividends Balsa sheet up -in thick actually preferable plans show fairlead flap-toelevator pushrod need dont air loads elevator applying Up control pushing pushrod will likely cause pushrod flex resulting reduction loss control simple fairlead can made either cotter pin half Perfectstyle line connector epoxied fuselage halfway between flaps elevators Performance-improving modifications stock design include following changes have proven successful prototype First tail has moved aft three inches Twister designed some time ago prevailing school thought shortcoupled ships way go tight cornering recent thinking has shown short tails better may fact detrimental Simply stated longer tail powerful since further center gravity CG Since powerful changes attitude airplane positively also stabilizes better level flight results ship maneuvers crisply asked stops turning immediately controls neutralized concise description perfect Stunt corner An added benefit since tail powerful CG can located further forward sacrificing cornering potential im proves line tension stability tracking consecutive maneuvers CG proto type full inch forward shown plans flies very brisk corners Try youll like lengthened tail butt-joining threeinch piece sheet balsa using slow-setting CyA glue resulting joint stronger wood Fill old stabilizer slot scrap cut out new tank-mounting system worthy atten tion As discussed Junes column Stunt engines run little weirdly profiles some means adjusting tank height important system consists cradle tank attached using double-sticky servomounting tape front back cradie vertical grooves about through short 4 -40 bolts attach tank/cradle fuselage using threaded inserts described earlier simply loosening screws tank can raised lowered after screws should retightened system effective simple use sanitary appearance checking out fuel system notice Taffinder tank has modified uniflow feed done opening tank stock fill-tube removed hole covered tin An ice pick used poke hole tank about ard outside rear corner -in copper tube soldered place just enters tank ending about Ii forward fuel pickup tube unfamiliar uniflow principle future column will deal length Suffice say point system described will result engine run remarkably consistent beginning end opposed conventional suction system characteristically runs progressively lean er tank empties function properly overflow tube must sealed flight exterior end uniflow tube must inside tank Note prototype tube solidly epoxied through fuselage flexible line connecting uniflo tube tank proper Notice simple adjustable lead-out guide used -in balsa wing tips inset piece basswood cut two-inch-long groove wide enough lead-out cable pass groove drilled -in holes quarter inch brass guides inserted adjust simply pull out brass tube move lead-out desired location reinsert tube tubes should either snug fit inserted small drop model cement secure wish install lead-outs perma nently location shown plan very close correct used forward CG allowedby longertail building Twister stock tall moment plan using CG shown plans would suggest lengthen forward lead-out holes ribs allow forward lead-out located just aft spar aft lead-out just fine shown olden days considered gospel have front lead-out CG Experience science has proven aint appropriate Proper lead-out location must provide natural sweep lines caused drag Next month well talk about some construc tion techniques make profile look spiffy Ted Fancher 158 Flying Cloud Isle Foster City CA 94404 CL Navy Carrier/Perry Continued page 62 closely control exhaust-gas leakage slide closed interior exhaust stack should slotted receive slide An alternative installing slide exhaust stack construct track slide can bolted exhaust stack using fittings provided attaching muffler plan describe such installation next column Rear-exhaust engines present different prob lem installing exhaust restrictor Because Continued page 162 160 Model Aviation R/c pI4GAZINE IVDEy 198fl I986 At-i INFO CONSTRUCTION REVIEWS HOW TOSc Six Maior Modeling MCgaZIOCS 9 2 Sfld 000K 0 MO Connectors Designed anything electrical requiring quick disconnects problem changing its direction motion slide-type restrictor less appropriate rear-exhaust engines rotary design rotary exhaust restrictors available designed use boats can variety engines share common characteristics being rather large heavy expensive An exception rule exhaust butter fly assembly produced K&B use 40-size rear-exhaust engine other en gines built same size crankcase part number 9149 official description exhaust-extension adapter exhaust butter fly assembly K&B butteffly assembly can installed OS VF YR 40 46 slight modification hole location size mounting hole Installation other engines could little challenging Although engine speed control meth ods described month effective easiest use exception pure suction system switched pressure/suction system using exhaust restrictor speed control have mentioned system before col umns plan describe system detail next column should October issue Fuel systems have commented times types fuel tanks appropriate use Carrier flying recent issue Hi-Low Landing newsletter Navy Carrier Society contains excellent article fuel tanks suction pressure systems combines wealth information place very good reference novice expert alike Anyone wishing join Navy Carrier Society take advantage newsletter can sending annual dues $6 LeRoy Cordes 1412 West Hood Chicago IL 60660 Nats As issue reaches circulation 1987 Nats will very near Carrier year offers usual three classes plus new 15 Carrier class unofficial event hope see Richard L Perry 10035 Deadwood Ave Ellvworth AEB SD 57706 CL Combat/Johnson Continued page 63 Money Nats Despite claims astronomical speeds around country mere 12944 mph turned Greg Hill won $50 prize difference between claimed actual speeds seems directly related 15-ft height-marker pole people couldnt fly complete lap under IS ft Theres simply no way calculate speed unless fly below IS-ft marker no factor put allows flying 450 Greg used basic Combat model flown last match engine Hoffelt 36R run K&B Speed fuel using McCollum carbon prop also tried some 74% nitro 16% synthetic oil 10% propylene oxide K&B Speed fuel works well high-performance engines makes good power fuss melted parts Team TWA produced very fast TWA 36 ran over 130 mph five six laps much compression never got clean sevenlap run very fastest Fox 115 mph bracket have faster engine will beat record youll have chance Nationals Lincoln official times will taken McCollum prop will available Mike Hoffelt will finishing also producing blanks Other high-tech items meet included new Venturi rod Fox engines Theyre made high-grade alloy available Roger Venturi 3252 W Ashlan #148 Fresno CA 93711 Price $2050 single rod $1950 buy 10 20 order sure specify crank] piston combo using McCollum ABC setup uses different wrist pin stock Fox same thing goes have Brasher crank Having correct clearance rod special feature us can appreciate after setting too tight clearance Brasher cranks rod too tight crank pin makes distinctive sound engine seizes also crank pin breaks off Max Boyd Venturi tech rods engine per formed flawlessly made lots power want thank Thomas Bubolx Peter Suah sending information about sunglasses Id al ways sneered stylish very expensive sunglasses$75 pair sunglasses just can look like Don Johnson Heck can skip shav ing couple days look like him still went home gravel eyes $6 drug store sunglasses didnt seem doing much good best articles Car & Drivers July 1986 issue titled Sunglasses Speed What comes down ultraviolet rays well infrared rays bad eyes two combined wear down physically make eyes sore days hurt night vision too best place start read Car & Driver article another recommended Tom found Cross Country Skier Spring 1987 Vol VI No S write Hidalgo Supply Co PO Box 1390 Wimberly TX 78676 call 512 847-5571 request catalogs have everything ever wanted know about sunglasses theyre discount-priced too ended up buying pair Serengetti driver glasses feature changeable tint suggested Peter Ive also found Ray Ban G-15 sale local discount store $26-$28 lot less places Serengetti glasses $56 Hidalgo theyre worth money think Id worry about pro tection harmful rays rather just right tint help pick up streamer model because youd have have dozen glasses fit conditions fly inie bright sun overcast etc Im really happy report MACA News letter MACA general hack high gear Pete Plunkett putting out newsletter very high-quality product Secretary-treasurer Mike Urban will happy take $10 mem bership address 316 Spring Ave Glen Ellyn IL 60137 phone 312 858-1725 last issue featured some pictures never before seen cartoons Steve Hills very interesting FAI practice model designed Jeff Johnson kind blue light special other features Looking through advertising found very good deal available through Core House 760 Waltonville Rd Hummelstown PA 17036 call 717 566-3810 Three cores/three wings Gotcha 400 $1295/$2495 Gotcha 500 $1495/$2695 triple-wing kits clude cores tip ribs full-length spars center ribs bellcrank mounts design notes threeviews Add own motor mount boom stab Fast Slow very good deal youre set up own foam cutting Lots other items available Core House might smart give call during normal business hours 300am Just Im writing some Grate-Shapes Bell Rock Industries 6486 Hwy 179 Suite 108 Sedona AZ 86336 arrived door Theyre sanding blocks use foam soft wood have different radius side block several different blocks choose Initial testing broken foam model indi cates sand shape lot better thing else have Also included package some Weight-Mates fabric bags fill sand lead shot use weighting structure during assembly propping things up tie-downs quarter-scale ultralight Combat model latest FAI rules finds us right back two limiting factors new fuel will 10% nitro 20% castor oil engine limited maximum venturi size 4mm Dont get confused about use castor oil isnt same soybean oil used Howard Rush plug-melting fuel can get lid off can should able make work well Itll cheap easy engines universally available 4mm venturi limiting factor Initial testing some FAI fliers found speeds down 80 mph range restrictor might slow glow engines enough make diesels competitive Remember diesel isnt restricted type fuel Team Race diesel 4mm venturi little nitro fuel might plenty fast Whether someone likes new slow rules will probably depend orientation 162 Model Aviation Extra 230 Two Popular Sizes 1/3 1/4 Standoff Scale 1/3 Scale Wing Span96 inches Wing Area1300 sqIin Power20 cu no hardware$19995 ship Partial Kit..$11995 $8 ship Plans.. $2000 $3 ship Cowl$2995 $3 ship Canopy .$2000 $3 ship Landing Gear$1995 $3 ship Foam Parts wing & decks 0 hip Decals pac$500 hip 1/4 Scale Wing Span72 inches Wing Area855 sq/in Power612-0 Ia 120 4-C Kit wheel pants & decals mci $16995 hip Plans$2500 $3 ship Cowl 5 $3 ship Wheel Pants$1500 $3 ship Landing Gear $1250 $3 ship Foam Parts wng & decks. $4000 hip Canopy$1000 hip Decals pec $500 hip Watch new 1/4 scale TR-60 Available 9/15 82 span Supertigre 3000 Quadra powered CASH Y ORDER CERTIFIED CHECK 13 weeks persoosi checfrsl VISA ERCARD ACCEPTED SEND SASE FOR MORE INFORMATION 712-943-4102 R/C EXTRAS RR #1 Box 288 Sergeant Bluff IA 51054
Edition: Model Aviation - 1987/08
Page Numbers: 62, 160, 162
Control Line Navy Carrier Dick Perry PROFILE KITS Although have always kits available Profile Carrier event Scale classes have no kits designed specifically Profile Carrier since GS kits available few years ago Sterlings Hellcat though designed Carrier competition can easily adapted evenL Two other Sterling kits long out production also well-suited Profile Carrier competition P-5 1 Mustang qualifies bonus points changes configuration Yak-9 minor modifications can become Bell Airabonita Both models small comparison other 35-sized profile models like Ringmaster slightly larger 300-sq-in minimum wing area requirement Profile Carrier build up light models have sheet-balsa trailing edges can converted flaps very easily kits harder find GS kits because have out production longer because legal Old-Time Stunt Fortunately us P-Si Yak-9 have enough popularity someone has de cided produce replicas Sterling kits know manufacturer kits available J&J Sales 709 Crescent Sunnyside WA 98944 Exhaust deflector common problem rear-exhaust engines keeping hot exhaust gases burning model often problem Class Class II models hitting fuel tank Profile model design exhaust deflector shown photos sent Orin Humphries another modeler name have yet find files after recent move South Dakota developed exhaust extension copper coupling used water pipes construction details apparent photographs Cost coupling purchased less quarter local hardware store Construction time under 15 minutes Weight negligible Engine speed control Suction fuel systems required Profile Carrier very easy work produce reliable idle carburetors available today very effective can used alone engines have used carbu retors Fox Perry no relation Supertigre OS form exhaust restrictor good results have experience K&B engines users K&B 58cc engine have exhaust baffles installed engine may exception contestants using larger carburetors increase power output reducing air resist ance through intake As venturi size increased fuel draw throttle open de creases until point reached some modelers forced take off partial throttle avoid having engine sag quit takeoff Under such conditions carburetor may able produce effective idle because extreme difference fuel draw between open closed throttle positions increase fuel draw engine idled down great fuel-metering system cannot compensate adequately such cases addition exhaust baffle effective enough serve throttle can improve idle considerably relieving carburetor some responsibility control engine speed near idle exhaust baffle allows larger carburetor opening idle corresponding change fuel draw changes fuel draw reduced something less radical fuel meter carburetor can handle mixture requirements much adequately carburetor alone used engine speed control exhaust baffle has used engine speed control Carrier competition longer other device Bob Smurthwaite designer J Roberts control systems responsible GS kits/bellcranks/handies also responsible Vari-Speed method engine speed control Van-Speed slide-type exhaust restrictor used conjunction standard suction intake venturi device very simple very effective As restrictor increased exhaust pressure engine slowed down Slower engine speed reduced fuel draw through venturi fuel flow decreased proportionally No fuel meter required quest increased performance resulted introduction larger intakes need use pressurized fuel systems provide reliable fuel flow pressure fuel system used exhaust restrictor alone will result flooded engine engine speed reduced solve problem fuel meter developed reduce fuel flow exhaust restrictor closed Bill Johnson generally credited first suc cessful design Harry Higley designed up dated version fuel meter few years ago currently available LeRoy Cordes 1412 West Hood Chicago IL 60660 fuel meter exhaust baffle can very effective engine speed control pressure fuel system system allows wide-open intake maximum power also results lot fuel being blown out large intake engine idles large carburetor designed use pump can used pressure fuel system exhaust baffle As suction system reliable idles can achieved flooding middle range throttle using carburetor fuel-metering device airflow restrictor Reducing intake area too much engine speed decreases can cause crankcase pressure being used fuel tank pressurization source drop point will actually draw fuel engine through crankcase pressure line exhaust slide shown photograph classic design made piece feeler gauge material inserted slot cut exhaust stack side-exhaust engine particular installa tion done entirely hand use jigs some method ensuring slots front back exhaust stack perfectly parallel desirable effective slot exhaust stack should fit slide Continued page 160 62 Model Aviation Orin Humphrles exhaust deflector rear- Herestheexhaustdeflectorlnstalied Itwill exhaust engines readily made protect Class II fuselage burning copper plumbing fitting hacksaw ade- Profile fuel tank overheating quate aithough Dremel tool cutoff wheel makes quick work project exhaust butterfly-type restrictor K&B useful 40-size engines its instailed OS 46 Exhaust restrictors probably oldest form engine speed control glow en gines Thisistheciasslcexhaustslideoften used conjunction fuel meter described column also useful conventional carburetors homemade steel feeler-gauge material Y ROAMIN RESEARCH P0 Box 104 Dept 096-Il Yale MIch 8097 2 Ideal Power Pock Connector electrIC planes cars boats Designed high vibrat ion environment Cycled ten thousand times electrical failure tiEd Anderson Power Products Inc SORRY NO PERSONAL CHECKS OR COD ORDERS Only certified checks money orders accepted Minimum order $1000 tar three packages 4 Powerpoles $300 per package plus $100 ship ping handling CT residents add 750/ sales tax Prices subject change notice Dealer Inquiries Invited turther intormation dealer prices send SASE Bus Card SERMOS RIC SNAP CONNECTORS Cedar Corners Station Box 16787 Stamford CT 06905 attractive airplane Ive landed upside down several times date zero damage Less noticeable equally valuable addition -in balsa tripler inside nose applied over Lite-Ply doubler Profiles notorious being subject engine vibration wing/fuselage joint leading edge provides almost guaranteed stress crack additional area highstress joint pays big dividends Balsa sheet up -in thick actually preferable plans show fairlead flap-toelevator pushrod need dont air loads elevator applying Up control pushing pushrod will likely cause pushrod flex resulting reduction loss control simple fairlead can made either cotter pin half Perfectstyle line connector epoxied fuselage halfway between flaps elevators Performance-improving modifications stock design include following changes have proven successful prototype First tail has moved aft three inches Twister designed some time ago prevailing school thought shortcoupled ships way go tight cornering recent thinking has shown short tails better may fact detrimental Simply stated longer tail powerful since further center gravity CG Since powerful changes attitude airplane positively also stabilizes better level flight results ship maneuvers crisply asked stops turning immediately controls neutralized concise description perfect Stunt corner An added benefit since tail powerful CG can located further forward sacrificing cornering potential im proves line tension stability tracking consecutive maneuvers CG proto type full inch forward shown plans flies very brisk corners Try youll like lengthened tail butt-joining threeinch piece sheet balsa using slow-setting CyA glue resulting joint stronger wood Fill old stabilizer slot scrap cut out new tank-mounting system worthy atten tion As discussed Junes column Stunt engines run little weirdly profiles some means adjusting tank height important system consists cradle tank attached using double-sticky servomounting tape front back cradie vertical grooves about through short 4 -40 bolts attach tank/cradle fuselage using threaded inserts described earlier simply loosening screws tank can raised lowered after screws should retightened system effective simple use sanitary appearance checking out fuel system notice Taffinder tank has modified uniflow feed done opening tank stock fill-tube removed hole covered tin An ice pick used poke hole tank about ard outside rear corner -in copper tube soldered place just enters tank ending about Ii forward fuel pickup tube unfamiliar uniflow principle future column will deal length Suffice say point system described will result engine run remarkably consistent beginning end opposed conventional suction system characteristically runs progressively lean er tank empties function properly overflow tube must sealed flight exterior end uniflow tube must inside tank Note prototype tube solidly epoxied through fuselage flexible line connecting uniflo tube tank proper Notice simple adjustable lead-out guide used -in balsa wing tips inset piece basswood cut two-inch-long groove wide enough lead-out cable pass groove drilled -in holes quarter inch brass guides inserted adjust simply pull out brass tube move lead-out desired location reinsert tube tubes should either snug fit inserted small drop model cement secure wish install lead-outs perma nently location shown plan very close correct used forward CG allowedby longertail building Twister stock tall moment plan using CG shown plans would suggest lengthen forward lead-out holes ribs allow forward lead-out located just aft spar aft lead-out just fine shown olden days considered gospel have front lead-out CG Experience science has proven aint appropriate Proper lead-out location must provide natural sweep lines caused drag Next month well talk about some construc tion techniques make profile look spiffy Ted Fancher 158 Flying Cloud Isle Foster City CA 94404 CL Navy Carrier/Perry Continued page 62 closely control exhaust-gas leakage slide closed interior exhaust stack should slotted receive slide An alternative installing slide exhaust stack construct track slide can bolted exhaust stack using fittings provided attaching muffler plan describe such installation next column Rear-exhaust engines present different prob lem installing exhaust restrictor Because Continued page 162 160 Model Aviation R/c pI4GAZINE IVDEy 198fl I986 At-i INFO CONSTRUCTION REVIEWS HOW TOSc Six Maior Modeling MCgaZIOCS 9 2 Sfld 000K 0 MO Connectors Designed anything electrical requiring quick disconnects problem changing its direction motion slide-type restrictor less appropriate rear-exhaust engines rotary design rotary exhaust restrictors available designed use boats can variety engines share common characteristics being rather large heavy expensive An exception rule exhaust butter fly assembly produced K&B use 40-size rear-exhaust engine other en gines built same size crankcase part number 9149 official description exhaust-extension adapter exhaust butter fly assembly K&B butteffly assembly can installed OS VF YR 40 46 slight modification hole location size mounting hole Installation other engines could little challenging Although engine speed control meth ods described month effective easiest use exception pure suction system switched pressure/suction system using exhaust restrictor speed control have mentioned system before col umns plan describe system detail next column should October issue Fuel systems have commented times types fuel tanks appropriate use Carrier flying recent issue Hi-Low Landing newsletter Navy Carrier Society contains excellent article fuel tanks suction pressure systems combines wealth information place very good reference novice expert alike Anyone wishing join Navy Carrier Society take advantage newsletter can sending annual dues $6 LeRoy Cordes 1412 West Hood Chicago IL 60660 Nats As issue reaches circulation 1987 Nats will very near Carrier year offers usual three classes plus new 15 Carrier class unofficial event hope see Richard L Perry 10035 Deadwood Ave Ellvworth AEB SD 57706 CL Combat/Johnson Continued page 63 Money Nats Despite claims astronomical speeds around country mere 12944 mph turned Greg Hill won $50 prize difference between claimed actual speeds seems directly related 15-ft height-marker pole people couldnt fly complete lap under IS ft Theres simply no way calculate speed unless fly below IS-ft marker no factor put allows flying 450 Greg used basic Combat model flown last match engine Hoffelt 36R run K&B Speed fuel using McCollum carbon prop also tried some 74% nitro 16% synthetic oil 10% propylene oxide K&B Speed fuel works well high-performance engines makes good power fuss melted parts Team TWA produced very fast TWA 36 ran over 130 mph five six laps much compression never got clean sevenlap run very fastest Fox 115 mph bracket have faster engine will beat record youll have chance Nationals Lincoln official times will taken McCollum prop will available Mike Hoffelt will finishing also producing blanks Other high-tech items meet included new Venturi rod Fox engines Theyre made high-grade alloy available Roger Venturi 3252 W Ashlan #148 Fresno CA 93711 Price $2050 single rod $1950 buy 10 20 order sure specify crank] piston combo using McCollum ABC setup uses different wrist pin stock Fox same thing goes have Brasher crank Having correct clearance rod special feature us can appreciate after setting too tight clearance Brasher cranks rod too tight crank pin makes distinctive sound engine seizes also crank pin breaks off Max Boyd Venturi tech rods engine per formed flawlessly made lots power want thank Thomas Bubolx Peter Suah sending information about sunglasses Id al ways sneered stylish very expensive sunglasses$75 pair sunglasses just can look like Don Johnson Heck can skip shav ing couple days look like him still went home gravel eyes $6 drug store sunglasses didnt seem doing much good best articles Car & Drivers July 1986 issue titled Sunglasses Speed What comes down ultraviolet rays well infrared rays bad eyes two combined wear down physically make eyes sore days hurt night vision too best place start read Car & Driver article another recommended Tom found Cross Country Skier Spring 1987 Vol VI No S write Hidalgo Supply Co PO Box 1390 Wimberly TX 78676 call 512 847-5571 request catalogs have everything ever wanted know about sunglasses theyre discount-priced too ended up buying pair Serengetti driver glasses feature changeable tint suggested Peter Ive also found Ray Ban G-15 sale local discount store $26-$28 lot less places Serengetti glasses $56 Hidalgo theyre worth money think Id worry about pro tection harmful rays rather just right tint help pick up streamer model because youd have have dozen glasses fit conditions fly inie bright sun overcast etc Im really happy report MACA News letter MACA general hack high gear Pete Plunkett putting out newsletter very high-quality product Secretary-treasurer Mike Urban will happy take $10 mem bership address 316 Spring Ave Glen Ellyn IL 60137 phone 312 858-1725 last issue featured some pictures never before seen cartoons Steve Hills very interesting FAI practice model designed Jeff Johnson kind blue light special other features Looking through advertising found very good deal available through Core House 760 Waltonville Rd Hummelstown PA 17036 call 717 566-3810 Three cores/three wings Gotcha 400 $1295/$2495 Gotcha 500 $1495/$2695 triple-wing kits clude cores tip ribs full-length spars center ribs bellcrank mounts design notes threeviews Add own motor mount boom stab Fast Slow very good deal youre set up own foam cutting Lots other items available Core House might smart give call during normal business hours 300am Just Im writing some Grate-Shapes Bell Rock Industries 6486 Hwy 179 Suite 108 Sedona AZ 86336 arrived door Theyre sanding blocks use foam soft wood have different radius side block several different blocks choose Initial testing broken foam model indi cates sand shape lot better thing else have Also included package some Weight-Mates fabric bags fill sand lead shot use weighting structure during assembly propping things up tie-downs quarter-scale ultralight Combat model latest FAI rules finds us right back two limiting factors new fuel will 10% nitro 20% castor oil engine limited maximum venturi size 4mm Dont get confused about use castor oil isnt same soybean oil used Howard Rush plug-melting fuel can get lid off can should able make work well Itll cheap easy engines universally available 4mm venturi limiting factor Initial testing some FAI fliers found speeds down 80 mph range restrictor might slow glow engines enough make diesels competitive Remember diesel isnt restricted type fuel Team Race diesel 4mm venturi little nitro fuel might plenty fast Whether someone likes new slow rules will probably depend orientation 162 Model Aviation Extra 230 Two Popular Sizes 1/3 1/4 Standoff Scale 1/3 Scale Wing Span96 inches Wing Area1300 sqIin Power20 cu no hardware$19995 ship Partial Kit..$11995 $8 ship Plans.. $2000 $3 ship Cowl$2995 $3 ship Canopy .$2000 $3 ship Landing Gear$1995 $3 ship Foam Parts wing & decks 0 hip Decals pac$500 hip 1/4 Scale Wing Span72 inches Wing Area855 sq/in Power612-0 Ia 120 4-C Kit wheel pants & decals mci $16995 hip Plans$2500 $3 ship Cowl 5 $3 ship Wheel Pants$1500 $3 ship Landing Gear $1250 $3 ship Foam Parts wng & decks. $4000 hip Canopy$1000 hip Decals pec $500 hip Watch new 1/4 scale TR-60 Available 9/15 82 span Supertigre 3000 Quadra powered CASH Y ORDER CERTIFIED CHECK 13 weeks persoosi checfrsl VISA ERCARD ACCEPTED SEND SASE FOR MORE INFORMATION 712-943-4102 R/C EXTRAS RR #1 Box 288 Sergeant Bluff IA 51054
Edition: Model Aviation - 1987/08
Page Numbers: 62, 160, 162
Control Line Navy Carrier Dick Perry PROFILE KITS Although have always kits available Profile Carrier event Scale classes have no kits designed specifically Profile Carrier since GS kits available few years ago Sterlings Hellcat though designed Carrier competition can easily adapted evenL Two other Sterling kits long out production also well-suited Profile Carrier competition P-5 1 Mustang qualifies bonus points changes configuration Yak-9 minor modifications can become Bell Airabonita Both models small comparison other 35-sized profile models like Ringmaster slightly larger 300-sq-in minimum wing area requirement Profile Carrier build up light models have sheet-balsa trailing edges can converted flaps very easily kits harder find GS kits because have out production longer because legal Old-Time Stunt Fortunately us P-Si Yak-9 have enough popularity someone has de cided produce replicas Sterling kits know manufacturer kits available J&J Sales 709 Crescent Sunnyside WA 98944 Exhaust deflector common problem rear-exhaust engines keeping hot exhaust gases burning model often problem Class Class II models hitting fuel tank Profile model design exhaust deflector shown photos sent Orin Humphries another modeler name have yet find files after recent move South Dakota developed exhaust extension copper coupling used water pipes construction details apparent photographs Cost coupling purchased less quarter local hardware store Construction time under 15 minutes Weight negligible Engine speed control Suction fuel systems required Profile Carrier very easy work produce reliable idle carburetors available today very effective can used alone engines have used carbu retors Fox Perry no relation Supertigre OS form exhaust restrictor good results have experience K&B engines users K&B 58cc engine have exhaust baffles installed engine may exception contestants using larger carburetors increase power output reducing air resist ance through intake As venturi size increased fuel draw throttle open de creases until point reached some modelers forced take off partial throttle avoid having engine sag quit takeoff Under such conditions carburetor may able produce effective idle because extreme difference fuel draw between open closed throttle positions increase fuel draw engine idled down great fuel-metering system cannot compensate adequately such cases addition exhaust baffle effective enough serve throttle can improve idle considerably relieving carburetor some responsibility control engine speed near idle exhaust baffle allows larger carburetor opening idle corresponding change fuel draw changes fuel draw reduced something less radical fuel meter carburetor can handle mixture requirements much adequately carburetor alone used engine speed control exhaust baffle has used engine speed control Carrier competition longer other device Bob Smurthwaite designer J Roberts control systems responsible GS kits/bellcranks/handies also responsible Vari-Speed method engine speed control Van-Speed slide-type exhaust restrictor used conjunction standard suction intake venturi device very simple very effective As restrictor increased exhaust pressure engine slowed down Slower engine speed reduced fuel draw through venturi fuel flow decreased proportionally No fuel meter required quest increased performance resulted introduction larger intakes need use pressurized fuel systems provide reliable fuel flow pressure fuel system used exhaust restrictor alone will result flooded engine engine speed reduced solve problem fuel meter developed reduce fuel flow exhaust restrictor closed Bill Johnson generally credited first suc cessful design Harry Higley designed up dated version fuel meter few years ago currently available LeRoy Cordes 1412 West Hood Chicago IL 60660 fuel meter exhaust baffle can very effective engine speed control pressure fuel system system allows wide-open intake maximum power also results lot fuel being blown out large intake engine idles large carburetor designed use pump can used pressure fuel system exhaust baffle As suction system reliable idles can achieved flooding middle range throttle using carburetor fuel-metering device airflow restrictor Reducing intake area too much engine speed decreases can cause crankcase pressure being used fuel tank pressurization source drop point will actually draw fuel engine through crankcase pressure line exhaust slide shown photograph classic design made piece feeler gauge material inserted slot cut exhaust stack side-exhaust engine particular installa tion done entirely hand use jigs some method ensuring slots front back exhaust stack perfectly parallel desirable effective slot exhaust stack should fit slide Continued page 160 62 Model Aviation Orin Humphrles exhaust deflector rear- Herestheexhaustdeflectorlnstalied Itwill exhaust engines readily made protect Class II fuselage burning copper plumbing fitting hacksaw ade- Profile fuel tank overheating quate aithough Dremel tool cutoff wheel makes quick work project exhaust butterfly-type restrictor K&B useful 40-size engines its instailed OS 46 Exhaust restrictors probably oldest form engine speed control glow en gines Thisistheciasslcexhaustslideoften used conjunction fuel meter described column also useful conventional carburetors homemade steel feeler-gauge material Y ROAMIN RESEARCH P0 Box 104 Dept 096-Il Yale MIch 8097 2 Ideal Power Pock Connector electrIC planes cars boats Designed high vibrat ion environment Cycled ten thousand times electrical failure tiEd Anderson Power Products Inc SORRY NO PERSONAL CHECKS OR COD ORDERS Only certified checks money orders accepted Minimum order $1000 tar three packages 4 Powerpoles $300 per package plus $100 ship ping handling CT residents add 750/ sales tax Prices subject change notice Dealer Inquiries Invited turther intormation dealer prices send SASE Bus Card SERMOS RIC SNAP CONNECTORS Cedar Corners Station Box 16787 Stamford CT 06905 attractive airplane Ive landed upside down several times date zero damage Less noticeable equally valuable addition -in balsa tripler inside nose applied over Lite-Ply doubler Profiles notorious being subject engine vibration wing/fuselage joint leading edge provides almost guaranteed stress crack additional area highstress joint pays big dividends Balsa sheet up -in thick actually preferable plans show fairlead flap-toelevator pushrod need dont air loads elevator applying Up control pushing pushrod will likely cause pushrod flex resulting reduction loss control simple fairlead can made either cotter pin half Perfectstyle line connector epoxied fuselage halfway between flaps elevators Performance-improving modifications stock design include following changes have proven successful prototype First tail has moved aft three inches Twister designed some time ago prevailing school thought shortcoupled ships way go tight cornering recent thinking has shown short tails better may fact detrimental Simply stated longer tail powerful since further center gravity CG Since powerful changes attitude airplane positively also stabilizes better level flight results ship maneuvers crisply asked stops turning immediately controls neutralized concise description perfect Stunt corner An added benefit since tail powerful CG can located further forward sacrificing cornering potential im proves line tension stability tracking consecutive maneuvers CG proto type full inch forward shown plans flies very brisk corners Try youll like lengthened tail butt-joining threeinch piece sheet balsa using slow-setting CyA glue resulting joint stronger wood Fill old stabilizer slot scrap cut out new tank-mounting system worthy atten tion As discussed Junes column Stunt engines run little weirdly profiles some means adjusting tank height important system consists cradle tank attached using double-sticky servomounting tape front back cradie vertical grooves about through short 4 -40 bolts attach tank/cradle fuselage using threaded inserts described earlier simply loosening screws tank can raised lowered after screws should retightened system effective simple use sanitary appearance checking out fuel system notice Taffinder tank has modified uniflow feed done opening tank stock fill-tube removed hole covered tin An ice pick used poke hole tank about ard outside rear corner -in copper tube soldered place just enters tank ending about Ii forward fuel pickup tube unfamiliar uniflow principle future column will deal length Suffice say point system described will result engine run remarkably consistent beginning end opposed conventional suction system characteristically runs progressively lean er tank empties function properly overflow tube must sealed flight exterior end uniflow tube must inside tank Note prototype tube solidly epoxied through fuselage flexible line connecting uniflo tube tank proper Notice simple adjustable lead-out guide used -in balsa wing tips inset piece basswood cut two-inch-long groove wide enough lead-out cable pass groove drilled -in holes quarter inch brass guides inserted adjust simply pull out brass tube move lead-out desired location reinsert tube tubes should either snug fit inserted small drop model cement secure wish install lead-outs perma nently location shown plan very close correct used forward CG allowedby longertail building Twister stock tall moment plan using CG shown plans would suggest lengthen forward lead-out holes ribs allow forward lead-out located just aft spar aft lead-out just fine shown olden days considered gospel have front lead-out CG Experience science has proven aint appropriate Proper lead-out location must provide natural sweep lines caused drag Next month well talk about some construc tion techniques make profile look spiffy Ted Fancher 158 Flying Cloud Isle Foster City CA 94404 CL Navy Carrier/Perry Continued page 62 closely control exhaust-gas leakage slide closed interior exhaust stack should slotted receive slide An alternative installing slide exhaust stack construct track slide can bolted exhaust stack using fittings provided attaching muffler plan describe such installation next column Rear-exhaust engines present different prob lem installing exhaust restrictor Because Continued page 162 160 Model Aviation R/c pI4GAZINE IVDEy 198fl I986 At-i INFO CONSTRUCTION REVIEWS HOW TOSc Six Maior Modeling MCgaZIOCS 9 2 Sfld 000K 0 MO Connectors Designed anything electrical requiring quick disconnects problem changing its direction motion slide-type restrictor less appropriate rear-exhaust engines rotary design rotary exhaust restrictors available designed use boats can variety engines share common characteristics being rather large heavy expensive An exception rule exhaust butter fly assembly produced K&B use 40-size rear-exhaust engine other en gines built same size crankcase part number 9149 official description exhaust-extension adapter exhaust butter fly assembly K&B butteffly assembly can installed OS VF YR 40 46 slight modification hole location size mounting hole Installation other engines could little challenging Although engine speed control meth ods described month effective easiest use exception pure suction system switched pressure/suction system using exhaust restrictor speed control have mentioned system before col umns plan describe system detail next column should October issue Fuel systems have commented times types fuel tanks appropriate use Carrier flying recent issue Hi-Low Landing newsletter Navy Carrier Society contains excellent article fuel tanks suction pressure systems combines wealth information place very good reference novice expert alike Anyone wishing join Navy Carrier Society take advantage newsletter can sending annual dues $6 LeRoy Cordes 1412 West Hood Chicago IL 60660 Nats As issue reaches circulation 1987 Nats will very near Carrier year offers usual three classes plus new 15 Carrier class unofficial event hope see Richard L Perry 10035 Deadwood Ave Ellvworth AEB SD 57706 CL Combat/Johnson Continued page 63 Money Nats Despite claims astronomical speeds around country mere 12944 mph turned Greg Hill won $50 prize difference between claimed actual speeds seems directly related 15-ft height-marker pole people couldnt fly complete lap under IS ft Theres simply no way calculate speed unless fly below IS-ft marker no factor put allows flying 450 Greg used basic Combat model flown last match engine Hoffelt 36R run K&B Speed fuel using McCollum carbon prop also tried some 74% nitro 16% synthetic oil 10% propylene oxide K&B Speed fuel works well high-performance engines makes good power fuss melted parts Team TWA produced very fast TWA 36 ran over 130 mph five six laps much compression never got clean sevenlap run very fastest Fox 115 mph bracket have faster engine will beat record youll have chance Nationals Lincoln official times will taken McCollum prop will available Mike Hoffelt will finishing also producing blanks Other high-tech items meet included new Venturi rod Fox engines Theyre made high-grade alloy available Roger Venturi 3252 W Ashlan #148 Fresno CA 93711 Price $2050 single rod $1950 buy 10 20 order sure specify crank] piston combo using McCollum ABC setup uses different wrist pin stock Fox same thing goes have Brasher crank Having correct clearance rod special feature us can appreciate after setting too tight clearance Brasher cranks rod too tight crank pin makes distinctive sound engine seizes also crank pin breaks off Max Boyd Venturi tech rods engine per formed flawlessly made lots power want thank Thomas Bubolx Peter Suah sending information about sunglasses Id al ways sneered stylish very expensive sunglasses$75 pair sunglasses just can look like Don Johnson Heck can skip shav ing couple days look like him still went home gravel eyes $6 drug store sunglasses didnt seem doing much good best articles Car & Drivers July 1986 issue titled Sunglasses Speed What comes down ultraviolet rays well infrared rays bad eyes two combined wear down physically make eyes sore days hurt night vision too best place start read Car & Driver article another recommended Tom found Cross Country Skier Spring 1987 Vol VI No S write Hidalgo Supply Co PO Box 1390 Wimberly TX 78676 call 512 847-5571 request catalogs have everything ever wanted know about sunglasses theyre discount-priced too ended up buying pair Serengetti driver glasses feature changeable tint suggested Peter Ive also found Ray Ban G-15 sale local discount store $26-$28 lot less places Serengetti glasses $56 Hidalgo theyre worth money think Id worry about pro tection harmful rays rather just right tint help pick up streamer model because youd have have dozen glasses fit conditions fly inie bright sun overcast etc Im really happy report MACA News letter MACA general hack high gear Pete Plunkett putting out newsletter very high-quality product Secretary-treasurer Mike Urban will happy take $10 mem bership address 316 Spring Ave Glen Ellyn IL 60137 phone 312 858-1725 last issue featured some pictures never before seen cartoons Steve Hills very interesting FAI practice model designed Jeff Johnson kind blue light special other features Looking through advertising found very good deal available through Core House 760 Waltonville Rd Hummelstown PA 17036 call 717 566-3810 Three cores/three wings Gotcha 400 $1295/$2495 Gotcha 500 $1495/$2695 triple-wing kits clude cores tip ribs full-length spars center ribs bellcrank mounts design notes threeviews Add own motor mount boom stab Fast Slow very good deal youre set up own foam cutting Lots other items available Core House might smart give call during normal business hours 300am Just Im writing some Grate-Shapes Bell Rock Industries 6486 Hwy 179 Suite 108 Sedona AZ 86336 arrived door Theyre sanding blocks use foam soft wood have different radius side block several different blocks choose Initial testing broken foam model indi cates sand shape lot better thing else have Also included package some Weight-Mates fabric bags fill sand lead shot use weighting structure during assembly propping things up tie-downs quarter-scale ultralight Combat model latest FAI rules finds us right back two limiting factors new fuel will 10% nitro 20% castor oil engine limited maximum venturi size 4mm Dont get confused about use castor oil isnt same soybean oil used Howard Rush plug-melting fuel can get lid off can should able make work well Itll cheap easy engines universally available 4mm venturi limiting factor Initial testing some FAI fliers found speeds down 80 mph range restrictor might slow glow engines enough make diesels competitive Remember diesel isnt restricted type fuel Team Race diesel 4mm venturi little nitro fuel might plenty fast Whether someone likes new slow rules will probably depend orientation 162 Model Aviation Extra 230 Two Popular Sizes 1/3 1/4 Standoff Scale 1/3 Scale Wing Span96 inches Wing Area1300 sqIin Power20 cu no hardware$19995 ship Partial Kit..$11995 $8 ship Plans.. $2000 $3 ship Cowl$2995 $3 ship Canopy .$2000 $3 ship Landing Gear$1995 $3 ship Foam Parts wing & decks 0 hip Decals pac$500 hip 1/4 Scale Wing Span72 inches Wing Area855 sq/in Power612-0 Ia 120 4-C Kit wheel pants & decals mci $16995 hip Plans$2500 $3 ship Cowl 5 $3 ship Wheel Pants$1500 $3 ship Landing Gear $1250 $3 ship Foam Parts wng & decks. $4000 hip Canopy$1000 hip Decals pec $500 hip Watch new 1/4 scale TR-60 Available 9/15 82 span Supertigre 3000 Quadra powered CASH Y ORDER CERTIFIED CHECK 13 weeks persoosi checfrsl VISA ERCARD ACCEPTED SEND SASE FOR MORE INFORMATION 712-943-4102 R/C EXTRAS RR #1 Box 288 Sergeant Bluff IA 51054