C oRE rot M Speed Flaring tool flaring tool made up two piecesthe base driver shaft base holds tubing shaft inserted inside tubing flares tubing both parts tool must lubricated oil 30 wt motor oil good prevent sticking Place base hard flat surface Cut tubing length insert completely base Insert pilot shaft small end tubing strike large end shaft hammer flare tubing Headpipe-to-cone I will describe two methods joining headpipe front cone Method No 1 stretches front cone headpipe goes inside Method No 2 flares headpipe headpipe goes over cone method requires special flaring tool Both methods equally strong prefer Method No 2 easier once have tool Method No 1 Cut off small end front cone until hole 5/16-in ID Use piece oBi-in wood dowel end rounded expand front cone fit over headpipe Insert dowelworking slowly twistingthrough small end Cut headpipe tubing 1-in longer needed Use reamer taper aft end headpipe tubing should have sharp edge finish Insert tapered end headpipe front cone until angle cone blends headpipe overlap joint should Ys-in strength Cut excess off front cone Wash front cone headpipe thoroughly THIS MONTHS column will cover second final part Jerry Bradshaws article Construct A Pipe first part appeared April 1981 issue After practicing soldering aluminum burning fingers wonder Hot Stuff stands heat burning fineers lets move finiRhinQ thit 56 Model Aviation Two different pipes using different method attach headpipe cone Upper pipe uses Method 2 headpipe flared go over cone lowerpipe uses Method 1 cone stretched tofit over headpipel Pick method appeals Oncethetwo halvesotthepIpeareSIIppeOOnIO simple jig theyre placed vertically jig-rod held vise joint cones meet forms small trough melted brazing metalwillflowallthewayaround forming nice weld soap water dry use piece 5/16in wood dowel jig joining headpipe front cone Put headpipe wood dowel slip front cone place over headpipe use washer 5/1 6-in hole move down inside cone center large end cone See Figure 1 Clamp end dowel comes out headpipe vise cone horizontal Apply flux braze joint using same procedures brazing cone Rotate cone dowel braze around joint heat joint wood dowel will char may catch fire just keep going Once has cooled can clean inside tubing cone Scotch Brite Method No 2 Cut i-in OD tubing Continued page 132 pipe adapter tightened around cyclinder like clamp-ring headpipe end piece brazed headpipe design 0-ring seal easily accessible inspection replacement Note sizes pipe components relative TO 049 June 1981 57 two methods joining headpipein pictures time upper 3 items illustrate Method 1 lower2 items illustrate Method 2 Further illustration Method 2 small end cone cut off place cone 57/32-in 00 far right base flaring tool flared tailpipe piece sticking out right front shaft flaring tool Heres jig holds two sections pipe perfect align ment theyre brazed together two metal rods machined telescoping joint middle slipped through head tail pipes joinedpull em Out after pipe halves brazed NEW FOURMOST PRODUCTS Bulk head Fitting simple method feed fuel vent tubes through solid bulkheads Drill hole No 18 drill size buikhead firewall up 3/B thick Provides seaied tank compartment eliminates fuelo" 4$ line chaffing Coior coded identification MOULDED NYLON FUELPROOF Weight GM EACH Size 3/32 10 PRICE 2for$195 FOURMOST PRODUCTS 4040 24th Ave Forest Grove OR 97116 talcum powder weight significant factor could probably save two three ounces given medium-sized aircraft Some people may find doesnt work satisfaction however feel worth experiment ing could possibly save overall five six ounces off aircraft because predominant amount paint applied rear center gravity Any other finishing techniques have please feel free submit publica tion Inclosing would like remind readers please send pictures sketches ideas publication need good input everybody perpetuate love Scale modeling Please send information Richard Byron 2506 So 16 1st Circle Omaha NE 68130 CL Navy Carrier/Perry Continued page 54 should light enough allow model settle onto its tail skid model placed smooth surface hook extended end hook should form about 450 angle main part hook way hook can engage arresting cables Bomb Release Fourmost Bombreiease mechanism simple lIght weIght device ideai fun-fly events Fasten unit plane screws provided Attach Springioaded latch thread connect throttle rudder servo Corrosion problem unit molded nylon spring stainless Weight 1/10 OUNCE PRICE $250 503 357-2732 AVAILABLE NOW Prototype Built Flight Tested JB Speosal MK III 84 Mono 78 Pipe Weight 18 lbs2195 TrasI Air 2000 105 Classc Scle Bipla0e 22 lbs 2295 irenral Ak 4000 99 RodaI Eng Classic Bipe 23 lbs2299 Foirke D-VII 88 Genran WA Fighte Bipe 23 lbs2495 Ceseng Sos topw4h Pop 80 Pipe Sopreith Tripehosed 80 Triplane Waco UFF 790 Pipe Waco ATO Lyjock Version 90 Bipe Nreoporr 11 Pebe 85 Pipe 35 Scole Fokker 081 72 Triplone Plans shipped U PS Parcel Post Please add $300 postarje hand/mo fastest sevice send pOstei money order No co D orders sent BEHRENS PLAN SERVICE 31-27 Nealy Ave. Far Rockaway NY 11691 in212 337-6987in model normal three-point attitude well can model flying just above deck hook can no one-third length fuselage should made 3/32-in music wire will strong enough resist straightening out engaging arresting cable tail hook can attached model variety ways photo shows typical installation using -in plywood reinforcements fuselage hardwood block can inset fuselage serve same purpose Hook placement should such end hook forward tail skid/wheel avoid interference missed arresting cables Scratch building very few kits available events scratch building almost necessity Original designs appear contests add interest Carrier flying both contestants spectators standard Class & II models sheeted solid wing construction Strong light wings can carved soild balsa getting balsa required thickness density requires either special order inordinant amount luck Foam cores have used models straight-tapered wings have advantage allowing use waste material core provide support wing sheeting during gluing processthe result being perfectly warp-free wing Built-up sheeted construction offers best opportunity obtaining light structure care used wood selection use glue Bob Reynolds uses jig shown accompaning photos build warp-free perfectlyaligned wings Fairey Firefly models jig allows complete wing dihedral built unit method worth considering especially individual family club antici pates building model particular design Richard L Perry 416 Woodhill Drr Golds boro NC 27530 CL Aerobatics/Paul Continued page 55 hear just remember anytime run plugs products manufactured individuals assuming certain amount risk ordering folks info rmation Stunt orPA MPA contact Wynn Paul 1640 MaywickDr Lexington KY 40504 CL Speed/Hempel Continued page 57 2-in long Flare end tubing using flaring tool Cut small end cone off place cone 5/16-in OD Use taper reamer put sharp edge front cone headpiece should fit cone snugly rocking therefore no jig required parts brazed Clean cone headpipe soap water dry Position headpipe small end cone place base cone flat surface brazing Braze headpipe cone using same procedure described before After cone cools wash soap water remove flux Tailpipe-to-cone Cut 7/32-in ID tubing 11-in long Flare end tubing using flaring tool Cut small end cone off cone 7/32-in OD tailpipe should fit cone snugly rocking therefore no jig required parts brazed Clean cone tailpipe soap water dry Position tailpipe small end cone place base cone flat surface brazing Braze tailpipe cone using same procedures described before After cone cools wash soap water remove flux Use taper reamer working inside cone enlarge hole 7/32-in ID Final Assembly have very simple jig holds two sections pipe perfect alignment being brazed jig made two metal rods 5/16-in OD 3/16-in OD least 12-in long end 5/16-in rod center drill 3/16in hole 1-in deep should done lathe large diameter end front cone should slightly smaller large diameter rear cone Cut file large end front cone will just fit inside large end rear cone parts should thoroughly cleaned soap water dried Fit two rods together Slide headpiece onto 5/16-in rod tailpipe onto 3/16-in rod Use 7/32-in OD tubing spacer fit between tailpipe rod joint 132 Model Aviation RINDYS UNIFLOW TUNT TAD PROFILE*COMBAT*RAT* WIDE & NARROW WEDGE 2. 6 oz Capacities Standard Vent available CUSTOM BLEND FUEL 5--40%Njtro Send 25cents specs CAROLINA TAFFINDER 8345 Delhi Road Charleston Hgts SC 29405 A~ACKER good-looking foam plane ex cellent fun-fly contests Big thick wing washout make docile yet maneuverable Illustrated plans much hardware & large full color decal sheet Wing Span 48 Construc tion All-Foam Radio 4 Channel Engine 19 404995 SWEET STIK simple build & fun flying model Larger version popular Das Little Stik Full-size plans & much hardware cluding motor mounts & hinges Wing Span 54 Construction All-Balsa Ra dio 4 Channel Engine 19-40 T-CRAVF stand-off scale model offering best flight performance Kit builds quickly contains full-size plans de tailed instruction booklet vacuum formed cowl & wheel parts & much hardware Wing Span 55-1/2 Con struction Balsa Radio 4 4995 Channel Engine 2945 Send 50 forMIDWEST PRODUCTS COMPANY complete catalog400 S Indiana Street Hobart Indiana 46342 Fiberglass MaterialsSCALE DOCUMENTATIONCARBON FIBER TAPE Ssquareyards$1500SCALE ORAwINTOS BOOKLETS005 x 1 25 wide choice 6 01 cloth 2 Hour Epoxy Resin$ 500 per qt Mold Release$300 1601 Epoxy Primer IK&R S30O0per gal25ft SOft ft EpoxyPaintmnnerfK&RI S15OOpergalEPLA-TECH$895 $1495 $2695 California Residents add 6% Sales Tax check MoneyINTFRNATIONAL $100 ph Order onlySorry No COOs 1KENZIE l-4$AIVSLOPE ASSOCIATES2317 n 63d Rob Smith RIC AircraftCATALOGS $200 VIGA OREGON 274BB SEATTLE A/A 98103 PO Box 33335 Oranada Hills CA 91344 two rods should fall roughly under majorany bubbles have leak system mustjoining headpipe pipe adapter requires diameter Clamp 3/16-in rodjig vertically inseal leaks must brazeda headpipe end piece design 0a vise Wrap several layers masking tapeoverring easily accessible inspection replacearound 3/16-in rod tailpipe spacerment Machine piece -in OD alumi rest joint cones meet forms aFinish produce professional-looking pipenum stock small trough metal will flow around whilefile Joints smooth Remove little metal as0-ring 0-ring use made silicone capillary action will form nice weld Now youpossible wont weaken joints Sand theis red can purchased rubber ready braze Use same procedure aspipe wet 320 paper remove file marksproducts supplier ordered number ARP before Remember melting rod will flowand follow wet 400 paper steel wool toward heat As rod begins melt worksoap pad such SOS used brighten the flame around joint flow melting rodpipe high luster Working soap padPipe adapter feel gas flow completely aroundaround pipe gives best finish Clean thecylinder through pipe adapter pipe pipe thoroughly water certain theshould smooth possible gases Pressure check use piece automobile gaspipe still has no leaks perform another pressureexiting exhaust port following piston line tubing slip over tailpipe place mycheckin downward motion tried blend inside finger over headpipe hole pipe under water blow gas line detectHeadpipe end piece method use ntinued page 134 WRAMS/Myers Continued page 29 models route separate used general public exhibitors wait lobby enter rest ticket holders can imagine its much fun carrying Quarter Scale model over heads pushing shoving crowd mills around three right-angle turns down low-ceilinged flight stairs also no unloading dock some exhibitors less pleased procedure hasnt improved 13 years 3 Other procedural annoy ances Judging purely places found crowds large part public Comes see models WRAMs will RAM Radio Controlled Models Chicago IL offered number little red boxes house accessories RC systemand couple could lifesavers George thought best item Battery Backer Its part airborne system senses flight pack battery voltagewhen drops below preset value device switches spare pack turns integral beeper might able hearthe thing planes air youll sure hear after landespecially since cant just switch off Another vital item Dual Servo Setterit detects loss transmitters signal sends two servos positions have pre-selected maybe engine-cutoff deploy parachute Other items included low-voltage alarms receiver transmitter LED Go/No-Go boxes same job ESV shirt-pocket timer concepts may new thats no reason ignore June1981 133 hurt hope see fit improve selves model matters exhibitors ers wont display Continued ag 7A REVOLUTIONARY NEW CHARGER C-50/4 MEN AUTOMATIC R/C SYSTEM CHARGER Extends life nicadi Extends capacity nicad Adds reliability nicads never before achieved charger Restores marginal batteries full power potential Batteries can left charge indefinitely damaging cells Fast chargesautomat ically Renders other chargers obsolete Now after i/o years development testing MEN Inc confidently intro duces its revolutionary C-50/4 Auto matic Pulse R/G System Charger unlike other charger have ever used DC charger pulsed charger therefore operates differently giving different resuha suitable control pulse height pulse rate charging batteries accomplished addition Out standing battery reliability produced charger several side benefits occur First batteries can left charger ipdefinitely simply means after flight session can put R/C system charge leave until youre ready fly again nest day next week next yearno need ever wonder about CL Speed/Hempel passage adapter conform downward flow pattern Engine get performance tuned pipe engine must set up properly Nick Sher tells done excellent article ModelAviation May 1979 Running pipe Start engine rich needle setting As turn needle valve leaner engine should come pipe engine will need fuel happens prepared immediately open needle valve about rn needle opened too far engine will fall off pipe happens just repeat process mentioned above get engine back pipe want gratefully acknowledge support have received Luther Roy project ideas criticisms encouragement have extremely valuable excellent machining ability can observed photos pipe adapter flaring tool sincerely hope time readers column make attempt build pipe will appreciate amount effort goes putting together such constructive article hope everyone enjoys article Tell em read Model Aviation Speed column next Speed column will tell modify Cox 049/051 cylinder rpm Gene Hempel 301 North Yale St Garland TX 75042 M icrofilm/Tenny Continued page 63 Relative humidity can affect microfilm pouring sessions much atmosphenc pressure serious about pouring microfilm simple barometer will enable record barometric pressure batch microfilm solution works well pressure different great amount surprised have different results pouring session general humidity can vary quite bit hindering formation good film humidity very high solvent evaporation film warm water can go fast film will cool enough condense moisture happens possible film will blush turn cloudy white Such film will very weak probably can lifted water Try much cooler water solvents will evaporate quickly wait longer before trying lift film 4PATTERN AND04,p 4 HIGH SPEED PROPELLERS oU DUYAIRSCREWft CUSTOM HIGH PERFORMANCE MAPLE PROPELLERS Propeller designed using symmetrical profile Individually precision hand balanced Accurale airfoil pitch Only high quality straight grain Eastern Maple used 8/ X 6% FORMULA 1 lOX 6 11X7 11X7/2 11X8 CUSTOM DESIGN UPON REQUEST SW PRODUCTS 5634 CRYSTAL COURT SANTA ROSA CA 95404 PRONE 707 526SARA Add 5100 P, SiS'O SAAIig charge long charge Just plug system leave till youre ready fly again Second battery tests can done charger example can test open battery cells shorted battery cells hi-leakage cells low ca pacity cells hi-impedance cells conditions can detected early lead disaster new MEN C-S0/4 charger available 3 models cover R/C needs 48 volts/g6 volts 48 volts/60 volts 48 volts/12 volts ca pable charging systems 240 MAH through 4 amps hour capscity new MEN C-S0/4 Charger rep resents latest ate art battery chargers No serious H/C en thusiast should Royal Electronics Sid Gates says appreciate friendship help will soon have RC systems chip want information write Jerry did show Cyclecharger d is- Bradshaw 3619 Hillcrest Lane Sacramento charges recharges battery packs 16-hr CA 95821 telephone number 916 487-9620 rate Also shown prototype Digitester still under development combines functions digital pulse-width meter digital voltmeter digital tach via option kitsitll also have outputs serve bench power supply battery charger servo cycler George hopes get hands describe regular Radio Tech nique column ANNOUNCING THE INTRODUCTION OF THE ALL NEW NELSON COMPETITION 15 ENGINE STANDARD AND R/C AVAILABLE JUNE 1 1981 complete formation send large stamped self-addressed envelope Kustom Kraftsmanship P0 Box 2699 Laguna Hills CA 92653 Dealer inquiries invited 134 Model Aviation
Edition: Model Aviation - 1981/06
Page Numbers: 56, 57, 132, 133, 134
C oRE rot M Speed Flaring tool flaring tool made up two piecesthe base driver shaft base holds tubing shaft inserted inside tubing flares tubing both parts tool must lubricated oil 30 wt motor oil good prevent sticking Place base hard flat surface Cut tubing length insert completely base Insert pilot shaft small end tubing strike large end shaft hammer flare tubing Headpipe-to-cone I will describe two methods joining headpipe front cone Method No 1 stretches front cone headpipe goes inside Method No 2 flares headpipe headpipe goes over cone method requires special flaring tool Both methods equally strong prefer Method No 2 easier once have tool Method No 1 Cut off small end front cone until hole 5/16-in ID Use piece oBi-in wood dowel end rounded expand front cone fit over headpipe Insert dowelworking slowly twistingthrough small end Cut headpipe tubing 1-in longer needed Use reamer taper aft end headpipe tubing should have sharp edge finish Insert tapered end headpipe front cone until angle cone blends headpipe overlap joint should Ys-in strength Cut excess off front cone Wash front cone headpipe thoroughly THIS MONTHS column will cover second final part Jerry Bradshaws article Construct A Pipe first part appeared April 1981 issue After practicing soldering aluminum burning fingers wonder Hot Stuff stands heat burning fineers lets move finiRhinQ thit 56 Model Aviation Two different pipes using different method attach headpipe cone Upper pipe uses Method 2 headpipe flared go over cone lowerpipe uses Method 1 cone stretched tofit over headpipel Pick method appeals Oncethetwo halvesotthepIpeareSIIppeOOnIO simple jig theyre placed vertically jig-rod held vise joint cones meet forms small trough melted brazing metalwillflowallthewayaround forming nice weld soap water dry use piece 5/16in wood dowel jig joining headpipe front cone Put headpipe wood dowel slip front cone place over headpipe use washer 5/1 6-in hole move down inside cone center large end cone See Figure 1 Clamp end dowel comes out headpipe vise cone horizontal Apply flux braze joint using same procedures brazing cone Rotate cone dowel braze around joint heat joint wood dowel will char may catch fire just keep going Once has cooled can clean inside tubing cone Scotch Brite Method No 2 Cut i-in OD tubing Continued page 132 pipe adapter tightened around cyclinder like clamp-ring headpipe end piece brazed headpipe design 0-ring seal easily accessible inspection replacement Note sizes pipe components relative TO 049 June 1981 57 two methods joining headpipein pictures time upper 3 items illustrate Method 1 lower2 items illustrate Method 2 Further illustration Method 2 small end cone cut off place cone 57/32-in 00 far right base flaring tool flared tailpipe piece sticking out right front shaft flaring tool Heres jig holds two sections pipe perfect align ment theyre brazed together two metal rods machined telescoping joint middle slipped through head tail pipes joinedpull em Out after pipe halves brazed NEW FOURMOST PRODUCTS Bulk head Fitting simple method feed fuel vent tubes through solid bulkheads Drill hole No 18 drill size buikhead firewall up 3/B thick Provides seaied tank compartment eliminates fuelo" 4$ line chaffing Coior coded identification MOULDED NYLON FUELPROOF Weight GM EACH Size 3/32 10 PRICE 2for$195 FOURMOST PRODUCTS 4040 24th Ave Forest Grove OR 97116 talcum powder weight significant factor could probably save two three ounces given medium-sized aircraft Some people may find doesnt work satisfaction however feel worth experiment ing could possibly save overall five six ounces off aircraft because predominant amount paint applied rear center gravity Any other finishing techniques have please feel free submit publica tion Inclosing would like remind readers please send pictures sketches ideas publication need good input everybody perpetuate love Scale modeling Please send information Richard Byron 2506 So 16 1st Circle Omaha NE 68130 CL Navy Carrier/Perry Continued page 54 should light enough allow model settle onto its tail skid model placed smooth surface hook extended end hook should form about 450 angle main part hook way hook can engage arresting cables Bomb Release Fourmost Bombreiease mechanism simple lIght weIght device ideai fun-fly events Fasten unit plane screws provided Attach Springioaded latch thread connect throttle rudder servo Corrosion problem unit molded nylon spring stainless Weight 1/10 OUNCE PRICE $250 503 357-2732 AVAILABLE NOW Prototype Built Flight Tested JB Speosal MK III 84 Mono 78 Pipe Weight 18 lbs2195 TrasI Air 2000 105 Classc Scle Bipla0e 22 lbs 2295 irenral Ak 4000 99 RodaI Eng Classic Bipe 23 lbs2299 Foirke D-VII 88 Genran WA Fighte Bipe 23 lbs2495 Ceseng Sos topw4h Pop 80 Pipe Sopreith Tripehosed 80 Triplane Waco UFF 790 Pipe Waco ATO Lyjock Version 90 Bipe Nreoporr 11 Pebe 85 Pipe 35 Scole Fokker 081 72 Triplone Plans shipped U PS Parcel Post Please add $300 postarje hand/mo fastest sevice send pOstei money order No co D orders sent BEHRENS PLAN SERVICE 31-27 Nealy Ave. Far Rockaway NY 11691 in212 337-6987in model normal three-point attitude well can model flying just above deck hook can no one-third length fuselage should made 3/32-in music wire will strong enough resist straightening out engaging arresting cable tail hook can attached model variety ways photo shows typical installation using -in plywood reinforcements fuselage hardwood block can inset fuselage serve same purpose Hook placement should such end hook forward tail skid/wheel avoid interference missed arresting cables Scratch building very few kits available events scratch building almost necessity Original designs appear contests add interest Carrier flying both contestants spectators standard Class & II models sheeted solid wing construction Strong light wings can carved soild balsa getting balsa required thickness density requires either special order inordinant amount luck Foam cores have used models straight-tapered wings have advantage allowing use waste material core provide support wing sheeting during gluing processthe result being perfectly warp-free wing Built-up sheeted construction offers best opportunity obtaining light structure care used wood selection use glue Bob Reynolds uses jig shown accompaning photos build warp-free perfectlyaligned wings Fairey Firefly models jig allows complete wing dihedral built unit method worth considering especially individual family club antici pates building model particular design Richard L Perry 416 Woodhill Drr Golds boro NC 27530 CL Aerobatics/Paul Continued page 55 hear just remember anytime run plugs products manufactured individuals assuming certain amount risk ordering folks info rmation Stunt orPA MPA contact Wynn Paul 1640 MaywickDr Lexington KY 40504 CL Speed/Hempel Continued page 57 2-in long Flare end tubing using flaring tool Cut small end cone off place cone 5/16-in OD Use taper reamer put sharp edge front cone headpiece should fit cone snugly rocking therefore no jig required parts brazed Clean cone headpipe soap water dry Position headpipe small end cone place base cone flat surface brazing Braze headpipe cone using same procedure described before After cone cools wash soap water remove flux Tailpipe-to-cone Cut 7/32-in ID tubing 11-in long Flare end tubing using flaring tool Cut small end cone off cone 7/32-in OD tailpipe should fit cone snugly rocking therefore no jig required parts brazed Clean cone tailpipe soap water dry Position tailpipe small end cone place base cone flat surface brazing Braze tailpipe cone using same procedures described before After cone cools wash soap water remove flux Use taper reamer working inside cone enlarge hole 7/32-in ID Final Assembly have very simple jig holds two sections pipe perfect alignment being brazed jig made two metal rods 5/16-in OD 3/16-in OD least 12-in long end 5/16-in rod center drill 3/16in hole 1-in deep should done lathe large diameter end front cone should slightly smaller large diameter rear cone Cut file large end front cone will just fit inside large end rear cone parts should thoroughly cleaned soap water dried Fit two rods together Slide headpiece onto 5/16-in rod tailpipe onto 3/16-in rod Use 7/32-in OD tubing spacer fit between tailpipe rod joint 132 Model Aviation RINDYS UNIFLOW TUNT TAD PROFILE*COMBAT*RAT* WIDE & NARROW WEDGE 2. 6 oz Capacities Standard Vent available CUSTOM BLEND FUEL 5--40%Njtro Send 25cents specs CAROLINA TAFFINDER 8345 Delhi Road Charleston Hgts SC 29405 A~ACKER good-looking foam plane ex cellent fun-fly contests Big thick wing washout make docile yet maneuverable Illustrated plans much hardware & large full color decal sheet Wing Span 48 Construc tion All-Foam Radio 4 Channel Engine 19 404995 SWEET STIK simple build & fun flying model Larger version popular Das Little Stik Full-size plans & much hardware cluding motor mounts & hinges Wing Span 54 Construction All-Balsa Ra dio 4 Channel Engine 19-40 T-CRAVF stand-off scale model offering best flight performance Kit builds quickly contains full-size plans de tailed instruction booklet vacuum formed cowl & wheel parts & much hardware Wing Span 55-1/2 Con struction Balsa Radio 4 4995 Channel Engine 2945 Send 50 forMIDWEST PRODUCTS COMPANY complete catalog400 S Indiana Street Hobart Indiana 46342 Fiberglass MaterialsSCALE DOCUMENTATIONCARBON FIBER TAPE Ssquareyards$1500SCALE ORAwINTOS BOOKLETS005 x 1 25 wide choice 6 01 cloth 2 Hour Epoxy Resin$ 500 per qt Mold Release$300 1601 Epoxy Primer IK&R S30O0per gal25ft SOft ft EpoxyPaintmnnerfK&RI S15OOpergalEPLA-TECH$895 $1495 $2695 California Residents add 6% Sales Tax check MoneyINTFRNATIONAL $100 ph Order onlySorry No COOs 1KENZIE l-4$AIVSLOPE ASSOCIATES2317 n 63d Rob Smith RIC AircraftCATALOGS $200 VIGA OREGON 274BB SEATTLE A/A 98103 PO Box 33335 Oranada Hills CA 91344 two rods should fall roughly under majorany bubbles have leak system mustjoining headpipe pipe adapter requires diameter Clamp 3/16-in rodjig vertically inseal leaks must brazeda headpipe end piece design 0a vise Wrap several layers masking tapeoverring easily accessible inspection replacearound 3/16-in rod tailpipe spacerment Machine piece -in OD alumi rest joint cones meet forms aFinish produce professional-looking pipenum stock small trough metal will flow around whilefile Joints smooth Remove little metal as0-ring 0-ring use made silicone capillary action will form nice weld Now youpossible wont weaken joints Sand theis red can purchased rubber ready braze Use same procedure aspipe wet 320 paper remove file marksproducts supplier ordered number ARP before Remember melting rod will flowand follow wet 400 paper steel wool toward heat As rod begins melt worksoap pad such SOS used brighten the flame around joint flow melting rodpipe high luster Working soap padPipe adapter feel gas flow completely aroundaround pipe gives best finish Clean thecylinder through pipe adapter pipe pipe thoroughly water certain theshould smooth possible gases Pressure check use piece automobile gaspipe still has no leaks perform another pressureexiting exhaust port following piston line tubing slip over tailpipe place mycheckin downward motion tried blend inside finger over headpipe hole pipe under water blow gas line detectHeadpipe end piece method use ntinued page 134 WRAMS/Myers Continued page 29 models route separate used general public exhibitors wait lobby enter rest ticket holders can imagine its much fun carrying Quarter Scale model over heads pushing shoving crowd mills around three right-angle turns down low-ceilinged flight stairs also no unloading dock some exhibitors less pleased procedure hasnt improved 13 years 3 Other procedural annoy ances Judging purely places found crowds large part public Comes see models WRAMs will RAM Radio Controlled Models Chicago IL offered number little red boxes house accessories RC systemand couple could lifesavers George thought best item Battery Backer Its part airborne system senses flight pack battery voltagewhen drops below preset value device switches spare pack turns integral beeper might able hearthe thing planes air youll sure hear after landespecially since cant just switch off Another vital item Dual Servo Setterit detects loss transmitters signal sends two servos positions have pre-selected maybe engine-cutoff deploy parachute Other items included low-voltage alarms receiver transmitter LED Go/No-Go boxes same job ESV shirt-pocket timer concepts may new thats no reason ignore June1981 133 hurt hope see fit improve selves model matters exhibitors ers wont display Continued ag 7A REVOLUTIONARY NEW CHARGER C-50/4 MEN AUTOMATIC R/C SYSTEM CHARGER Extends life nicadi Extends capacity nicad Adds reliability nicads never before achieved charger Restores marginal batteries full power potential Batteries can left charge indefinitely damaging cells Fast chargesautomat ically Renders other chargers obsolete Now after i/o years development testing MEN Inc confidently intro duces its revolutionary C-50/4 Auto matic Pulse R/G System Charger unlike other charger have ever used DC charger pulsed charger therefore operates differently giving different resuha suitable control pulse height pulse rate charging batteries accomplished addition Out standing battery reliability produced charger several side benefits occur First batteries can left charger ipdefinitely simply means after flight session can put R/C system charge leave until youre ready fly again nest day next week next yearno need ever wonder about CL Speed/Hempel passage adapter conform downward flow pattern Engine get performance tuned pipe engine must set up properly Nick Sher tells done excellent article ModelAviation May 1979 Running pipe Start engine rich needle setting As turn needle valve leaner engine should come pipe engine will need fuel happens prepared immediately open needle valve about rn needle opened too far engine will fall off pipe happens just repeat process mentioned above get engine back pipe want gratefully acknowledge support have received Luther Roy project ideas criticisms encouragement have extremely valuable excellent machining ability can observed photos pipe adapter flaring tool sincerely hope time readers column make attempt build pipe will appreciate amount effort goes putting together such constructive article hope everyone enjoys article Tell em read Model Aviation Speed column next Speed column will tell modify Cox 049/051 cylinder rpm Gene Hempel 301 North Yale St Garland TX 75042 M icrofilm/Tenny Continued page 63 Relative humidity can affect microfilm pouring sessions much atmosphenc pressure serious about pouring microfilm simple barometer will enable record barometric pressure batch microfilm solution works well pressure different great amount surprised have different results pouring session general humidity can vary quite bit hindering formation good film humidity very high solvent evaporation film warm water can go fast film will cool enough condense moisture happens possible film will blush turn cloudy white Such film will very weak probably can lifted water Try much cooler water solvents will evaporate quickly wait longer before trying lift film 4PATTERN AND04,p 4 HIGH SPEED PROPELLERS oU DUYAIRSCREWft CUSTOM HIGH PERFORMANCE MAPLE PROPELLERS Propeller designed using symmetrical profile Individually precision hand balanced Accurale airfoil pitch Only high quality straight grain Eastern Maple used 8/ X 6% FORMULA 1 lOX 6 11X7 11X7/2 11X8 CUSTOM DESIGN UPON REQUEST SW PRODUCTS 5634 CRYSTAL COURT SANTA ROSA CA 95404 PRONE 707 526SARA Add 5100 P, SiS'O SAAIig charge long charge Just plug system leave till youre ready fly again Second battery tests can done charger example can test open battery cells shorted battery cells hi-leakage cells low ca pacity cells hi-impedance cells conditions can detected early lead disaster new MEN C-S0/4 charger available 3 models cover R/C needs 48 volts/g6 volts 48 volts/60 volts 48 volts/12 volts ca pable charging systems 240 MAH through 4 amps hour capscity new MEN C-S0/4 Charger rep resents latest ate art battery chargers No serious H/C en thusiast should Royal Electronics Sid Gates says appreciate friendship help will soon have RC systems chip want information write Jerry did show Cyclecharger d is- Bradshaw 3619 Hillcrest Lane Sacramento charges recharges battery packs 16-hr CA 95821 telephone number 916 487-9620 rate Also shown prototype Digitester still under development combines functions digital pulse-width meter digital voltmeter digital tach via option kitsitll also have outputs serve bench power supply battery charger servo cycler George hopes get hands describe regular Radio Tech nique column ANNOUNCING THE INTRODUCTION OF THE ALL NEW NELSON COMPETITION 15 ENGINE STANDARD AND R/C AVAILABLE JUNE 1 1981 complete formation send large stamped self-addressed envelope Kustom Kraftsmanship P0 Box 2699 Laguna Hills CA 92653 Dealer inquiries invited 134 Model Aviation
Edition: Model Aviation - 1981/06
Page Numbers: 56, 57, 132, 133, 134
C oRE rot M Speed Flaring tool flaring tool made up two piecesthe base driver shaft base holds tubing shaft inserted inside tubing flares tubing both parts tool must lubricated oil 30 wt motor oil good prevent sticking Place base hard flat surface Cut tubing length insert completely base Insert pilot shaft small end tubing strike large end shaft hammer flare tubing Headpipe-to-cone I will describe two methods joining headpipe front cone Method No 1 stretches front cone headpipe goes inside Method No 2 flares headpipe headpipe goes over cone method requires special flaring tool Both methods equally strong prefer Method No 2 easier once have tool Method No 1 Cut off small end front cone until hole 5/16-in ID Use piece oBi-in wood dowel end rounded expand front cone fit over headpipe Insert dowelworking slowly twistingthrough small end Cut headpipe tubing 1-in longer needed Use reamer taper aft end headpipe tubing should have sharp edge finish Insert tapered end headpipe front cone until angle cone blends headpipe overlap joint should Ys-in strength Cut excess off front cone Wash front cone headpipe thoroughly THIS MONTHS column will cover second final part Jerry Bradshaws article Construct A Pipe first part appeared April 1981 issue After practicing soldering aluminum burning fingers wonder Hot Stuff stands heat burning fineers lets move finiRhinQ thit 56 Model Aviation Two different pipes using different method attach headpipe cone Upper pipe uses Method 2 headpipe flared go over cone lowerpipe uses Method 1 cone stretched tofit over headpipel Pick method appeals Oncethetwo halvesotthepIpeareSIIppeOOnIO simple jig theyre placed vertically jig-rod held vise joint cones meet forms small trough melted brazing metalwillflowallthewayaround forming nice weld soap water dry use piece 5/16in wood dowel jig joining headpipe front cone Put headpipe wood dowel slip front cone place over headpipe use washer 5/1 6-in hole move down inside cone center large end cone See Figure 1 Clamp end dowel comes out headpipe vise cone horizontal Apply flux braze joint using same procedures brazing cone Rotate cone dowel braze around joint heat joint wood dowel will char may catch fire just keep going Once has cooled can clean inside tubing cone Scotch Brite Method No 2 Cut i-in OD tubing Continued page 132 pipe adapter tightened around cyclinder like clamp-ring headpipe end piece brazed headpipe design 0-ring seal easily accessible inspection replacement Note sizes pipe components relative TO 049 June 1981 57 two methods joining headpipein pictures time upper 3 items illustrate Method 1 lower2 items illustrate Method 2 Further illustration Method 2 small end cone cut off place cone 57/32-in 00 far right base flaring tool flared tailpipe piece sticking out right front shaft flaring tool Heres jig holds two sections pipe perfect align ment theyre brazed together two metal rods machined telescoping joint middle slipped through head tail pipes joinedpull em Out after pipe halves brazed NEW FOURMOST PRODUCTS Bulk head Fitting simple method feed fuel vent tubes through solid bulkheads Drill hole No 18 drill size buikhead firewall up 3/B thick Provides seaied tank compartment eliminates fuelo" 4$ line chaffing Coior coded identification MOULDED NYLON FUELPROOF Weight GM EACH Size 3/32 10 PRICE 2for$195 FOURMOST PRODUCTS 4040 24th Ave Forest Grove OR 97116 talcum powder weight significant factor could probably save two three ounces given medium-sized aircraft Some people may find doesnt work satisfaction however feel worth experiment ing could possibly save overall five six ounces off aircraft because predominant amount paint applied rear center gravity Any other finishing techniques have please feel free submit publica tion Inclosing would like remind readers please send pictures sketches ideas publication need good input everybody perpetuate love Scale modeling Please send information Richard Byron 2506 So 16 1st Circle Omaha NE 68130 CL Navy Carrier/Perry Continued page 54 should light enough allow model settle onto its tail skid model placed smooth surface hook extended end hook should form about 450 angle main part hook way hook can engage arresting cables Bomb Release Fourmost Bombreiease mechanism simple lIght weIght device ideai fun-fly events Fasten unit plane screws provided Attach Springioaded latch thread connect throttle rudder servo Corrosion problem unit molded nylon spring stainless Weight 1/10 OUNCE PRICE $250 503 357-2732 AVAILABLE NOW Prototype Built Flight Tested JB Speosal MK III 84 Mono 78 Pipe Weight 18 lbs2195 TrasI Air 2000 105 Classc Scle Bipla0e 22 lbs 2295 irenral Ak 4000 99 RodaI Eng Classic Bipe 23 lbs2299 Foirke D-VII 88 Genran WA Fighte Bipe 23 lbs2495 Ceseng Sos topw4h Pop 80 Pipe Sopreith Tripehosed 80 Triplane Waco UFF 790 Pipe Waco ATO Lyjock Version 90 Bipe Nreoporr 11 Pebe 85 Pipe 35 Scole Fokker 081 72 Triplone Plans shipped U PS Parcel Post Please add $300 postarje hand/mo fastest sevice send pOstei money order No co D orders sent BEHRENS PLAN SERVICE 31-27 Nealy Ave. Far Rockaway NY 11691 in212 337-6987in model normal three-point attitude well can model flying just above deck hook can no one-third length fuselage should made 3/32-in music wire will strong enough resist straightening out engaging arresting cable tail hook can attached model variety ways photo shows typical installation using -in plywood reinforcements fuselage hardwood block can inset fuselage serve same purpose Hook placement should such end hook forward tail skid/wheel avoid interference missed arresting cables Scratch building very few kits available events scratch building almost necessity Original designs appear contests add interest Carrier flying both contestants spectators standard Class & II models sheeted solid wing construction Strong light wings can carved soild balsa getting balsa required thickness density requires either special order inordinant amount luck Foam cores have used models straight-tapered wings have advantage allowing use waste material core provide support wing sheeting during gluing processthe result being perfectly warp-free wing Built-up sheeted construction offers best opportunity obtaining light structure care used wood selection use glue Bob Reynolds uses jig shown accompaning photos build warp-free perfectlyaligned wings Fairey Firefly models jig allows complete wing dihedral built unit method worth considering especially individual family club antici pates building model particular design Richard L Perry 416 Woodhill Drr Golds boro NC 27530 CL Aerobatics/Paul Continued page 55 hear just remember anytime run plugs products manufactured individuals assuming certain amount risk ordering folks info rmation Stunt orPA MPA contact Wynn Paul 1640 MaywickDr Lexington KY 40504 CL Speed/Hempel Continued page 57 2-in long Flare end tubing using flaring tool Cut small end cone off place cone 5/16-in OD Use taper reamer put sharp edge front cone headpiece should fit cone snugly rocking therefore no jig required parts brazed Clean cone headpipe soap water dry Position headpipe small end cone place base cone flat surface brazing Braze headpipe cone using same procedure described before After cone cools wash soap water remove flux Tailpipe-to-cone Cut 7/32-in ID tubing 11-in long Flare end tubing using flaring tool Cut small end cone off cone 7/32-in OD tailpipe should fit cone snugly rocking therefore no jig required parts brazed Clean cone tailpipe soap water dry Position tailpipe small end cone place base cone flat surface brazing Braze tailpipe cone using same procedures described before After cone cools wash soap water remove flux Use taper reamer working inside cone enlarge hole 7/32-in ID Final Assembly have very simple jig holds two sections pipe perfect alignment being brazed jig made two metal rods 5/16-in OD 3/16-in OD least 12-in long end 5/16-in rod center drill 3/16in hole 1-in deep should done lathe large diameter end front cone should slightly smaller large diameter rear cone Cut file large end front cone will just fit inside large end rear cone parts should thoroughly cleaned soap water dried Fit two rods together Slide headpiece onto 5/16-in rod tailpipe onto 3/16-in rod Use 7/32-in OD tubing spacer fit between tailpipe rod joint 132 Model Aviation RINDYS UNIFLOW TUNT TAD PROFILE*COMBAT*RAT* WIDE & NARROW WEDGE 2. 6 oz Capacities Standard Vent available CUSTOM BLEND FUEL 5--40%Njtro Send 25cents specs CAROLINA TAFFINDER 8345 Delhi Road Charleston Hgts SC 29405 A~ACKER good-looking foam plane ex cellent fun-fly contests Big thick wing washout make docile yet maneuverable Illustrated plans much hardware & large full color decal sheet Wing Span 48 Construc tion All-Foam Radio 4 Channel Engine 19 404995 SWEET STIK simple build & fun flying model Larger version popular Das Little Stik Full-size plans & much hardware cluding motor mounts & hinges Wing Span 54 Construction All-Balsa Ra dio 4 Channel Engine 19-40 T-CRAVF stand-off scale model offering best flight performance Kit builds quickly contains full-size plans de tailed instruction booklet vacuum formed cowl & wheel parts & much hardware Wing Span 55-1/2 Con struction Balsa Radio 4 4995 Channel Engine 2945 Send 50 forMIDWEST PRODUCTS COMPANY complete catalog400 S Indiana Street Hobart Indiana 46342 Fiberglass MaterialsSCALE DOCUMENTATIONCARBON FIBER TAPE Ssquareyards$1500SCALE ORAwINTOS BOOKLETS005 x 1 25 wide choice 6 01 cloth 2 Hour Epoxy Resin$ 500 per qt Mold Release$300 1601 Epoxy Primer IK&R S30O0per gal25ft SOft ft EpoxyPaintmnnerfK&RI S15OOpergalEPLA-TECH$895 $1495 $2695 California Residents add 6% Sales Tax check MoneyINTFRNATIONAL $100 ph Order onlySorry No COOs 1KENZIE l-4$AIVSLOPE ASSOCIATES2317 n 63d Rob Smith RIC AircraftCATALOGS $200 VIGA OREGON 274BB SEATTLE A/A 98103 PO Box 33335 Oranada Hills CA 91344 two rods should fall roughly under majorany bubbles have leak system mustjoining headpipe pipe adapter requires diameter Clamp 3/16-in rodjig vertically inseal leaks must brazeda headpipe end piece design 0a vise Wrap several layers masking tapeoverring easily accessible inspection replacearound 3/16-in rod tailpipe spacerment Machine piece -in OD alumi rest joint cones meet forms aFinish produce professional-looking pipenum stock small trough metal will flow around whilefile Joints smooth Remove little metal as0-ring 0-ring use made silicone capillary action will form nice weld Now youpossible wont weaken joints Sand theis red can purchased rubber ready braze Use same procedure aspipe wet 320 paper remove file marksproducts supplier ordered number ARP before Remember melting rod will flowand follow wet 400 paper steel wool toward heat As rod begins melt worksoap pad such SOS used brighten the flame around joint flow melting rodpipe high luster Working soap padPipe adapter feel gas flow completely aroundaround pipe gives best finish Clean thecylinder through pipe adapter pipe pipe thoroughly water certain theshould smooth possible gases Pressure check use piece automobile gaspipe still has no leaks perform another pressureexiting exhaust port following piston line tubing slip over tailpipe place mycheckin downward motion tried blend inside finger over headpipe hole pipe under water blow gas line detectHeadpipe end piece method use ntinued page 134 WRAMS/Myers Continued page 29 models route separate used general public exhibitors wait lobby enter rest ticket holders can imagine its much fun carrying Quarter Scale model over heads pushing shoving crowd mills around three right-angle turns down low-ceilinged flight stairs also no unloading dock some exhibitors less pleased procedure hasnt improved 13 years 3 Other procedural annoy ances Judging purely places found crowds large part public Comes see models WRAMs will RAM Radio Controlled Models Chicago IL offered number little red boxes house accessories RC systemand couple could lifesavers George thought best item Battery Backer Its part airborne system senses flight pack battery voltagewhen drops below preset value device switches spare pack turns integral beeper might able hearthe thing planes air youll sure hear after landespecially since cant just switch off Another vital item Dual Servo Setterit detects loss transmitters signal sends two servos positions have pre-selected maybe engine-cutoff deploy parachute Other items included low-voltage alarms receiver transmitter LED Go/No-Go boxes same job ESV shirt-pocket timer concepts may new thats no reason ignore June1981 133 hurt hope see fit improve selves model matters exhibitors ers wont display Continued ag 7A REVOLUTIONARY NEW CHARGER C-50/4 MEN AUTOMATIC R/C SYSTEM CHARGER Extends life nicadi Extends capacity nicad Adds reliability nicads never before achieved charger Restores marginal batteries full power potential Batteries can left charge indefinitely damaging cells Fast chargesautomat ically Renders other chargers obsolete Now after i/o years development testing MEN Inc confidently intro duces its revolutionary C-50/4 Auto matic Pulse R/G System Charger unlike other charger have ever used DC charger pulsed charger therefore operates differently giving different resuha suitable control pulse height pulse rate charging batteries accomplished addition Out standing battery reliability produced charger several side benefits occur First batteries can left charger ipdefinitely simply means after flight session can put R/C system charge leave until youre ready fly again nest day next week next yearno need ever wonder about CL Speed/Hempel passage adapter conform downward flow pattern Engine get performance tuned pipe engine must set up properly Nick Sher tells done excellent article ModelAviation May 1979 Running pipe Start engine rich needle setting As turn needle valve leaner engine should come pipe engine will need fuel happens prepared immediately open needle valve about rn needle opened too far engine will fall off pipe happens just repeat process mentioned above get engine back pipe want gratefully acknowledge support have received Luther Roy project ideas criticisms encouragement have extremely valuable excellent machining ability can observed photos pipe adapter flaring tool sincerely hope time readers column make attempt build pipe will appreciate amount effort goes putting together such constructive article hope everyone enjoys article Tell em read Model Aviation Speed column next Speed column will tell modify Cox 049/051 cylinder rpm Gene Hempel 301 North Yale St Garland TX 75042 M icrofilm/Tenny Continued page 63 Relative humidity can affect microfilm pouring sessions much atmosphenc pressure serious about pouring microfilm simple barometer will enable record barometric pressure batch microfilm solution works well pressure different great amount surprised have different results pouring session general humidity can vary quite bit hindering formation good film humidity very high solvent evaporation film warm water can go fast film will cool enough condense moisture happens possible film will blush turn cloudy white Such film will very weak probably can lifted water Try much cooler water solvents will evaporate quickly wait longer before trying lift film 4PATTERN AND04,p 4 HIGH SPEED PROPELLERS oU DUYAIRSCREWft CUSTOM HIGH PERFORMANCE MAPLE PROPELLERS Propeller designed using symmetrical profile Individually precision hand balanced Accurale airfoil pitch Only high quality straight grain Eastern Maple used 8/ X 6% FORMULA 1 lOX 6 11X7 11X7/2 11X8 CUSTOM DESIGN UPON REQUEST SW PRODUCTS 5634 CRYSTAL COURT SANTA ROSA CA 95404 PRONE 707 526SARA Add 5100 P, SiS'O SAAIig charge long charge Just plug system leave till youre ready fly again Second battery tests can done charger example can test open battery cells shorted battery cells hi-leakage cells low ca pacity cells hi-impedance cells conditions can detected early lead disaster new MEN C-S0/4 charger available 3 models cover R/C needs 48 volts/g6 volts 48 volts/60 volts 48 volts/12 volts ca pable charging systems 240 MAH through 4 amps hour capscity new MEN C-S0/4 Charger rep resents latest ate art battery chargers No serious H/C en thusiast should Royal Electronics Sid Gates says appreciate friendship help will soon have RC systems chip want information write Jerry did show Cyclecharger d is- Bradshaw 3619 Hillcrest Lane Sacramento charges recharges battery packs 16-hr CA 95821 telephone number 916 487-9620 rate Also shown prototype Digitester still under development combines functions digital pulse-width meter digital voltmeter digital tach via option kitsitll also have outputs serve bench power supply battery charger servo cycler George hopes get hands describe regular Radio Tech nique column ANNOUNCING THE INTRODUCTION OF THE ALL NEW NELSON COMPETITION 15 ENGINE STANDARD AND R/C AVAILABLE JUNE 1 1981 complete formation send large stamped self-addressed envelope Kustom Kraftsmanship P0 Box 2699 Laguna Hills CA 92653 Dealer inquiries invited 134 Model Aviation
Edition: Model Aviation - 1981/06
Page Numbers: 56, 57, 132, 133, 134
C oRE rot M Speed Flaring tool flaring tool made up two piecesthe base driver shaft base holds tubing shaft inserted inside tubing flares tubing both parts tool must lubricated oil 30 wt motor oil good prevent sticking Place base hard flat surface Cut tubing length insert completely base Insert pilot shaft small end tubing strike large end shaft hammer flare tubing Headpipe-to-cone I will describe two methods joining headpipe front cone Method No 1 stretches front cone headpipe goes inside Method No 2 flares headpipe headpipe goes over cone method requires special flaring tool Both methods equally strong prefer Method No 2 easier once have tool Method No 1 Cut off small end front cone until hole 5/16-in ID Use piece oBi-in wood dowel end rounded expand front cone fit over headpipe Insert dowelworking slowly twistingthrough small end Cut headpipe tubing 1-in longer needed Use reamer taper aft end headpipe tubing should have sharp edge finish Insert tapered end headpipe front cone until angle cone blends headpipe overlap joint should Ys-in strength Cut excess off front cone Wash front cone headpipe thoroughly THIS MONTHS column will cover second final part Jerry Bradshaws article Construct A Pipe first part appeared April 1981 issue After practicing soldering aluminum burning fingers wonder Hot Stuff stands heat burning fineers lets move finiRhinQ thit 56 Model Aviation Two different pipes using different method attach headpipe cone Upper pipe uses Method 2 headpipe flared go over cone lowerpipe uses Method 1 cone stretched tofit over headpipel Pick method appeals Oncethetwo halvesotthepIpeareSIIppeOOnIO simple jig theyre placed vertically jig-rod held vise joint cones meet forms small trough melted brazing metalwillflowallthewayaround forming nice weld soap water dry use piece 5/16in wood dowel jig joining headpipe front cone Put headpipe wood dowel slip front cone place over headpipe use washer 5/1 6-in hole move down inside cone center large end cone See Figure 1 Clamp end dowel comes out headpipe vise cone horizontal Apply flux braze joint using same procedures brazing cone Rotate cone dowel braze around joint heat joint wood dowel will char may catch fire just keep going Once has cooled can clean inside tubing cone Scotch Brite Method No 2 Cut i-in OD tubing Continued page 132 pipe adapter tightened around cyclinder like clamp-ring headpipe end piece brazed headpipe design 0-ring seal easily accessible inspection replacement Note sizes pipe components relative TO 049 June 1981 57 two methods joining headpipein pictures time upper 3 items illustrate Method 1 lower2 items illustrate Method 2 Further illustration Method 2 small end cone cut off place cone 57/32-in 00 far right base flaring tool flared tailpipe piece sticking out right front shaft flaring tool Heres jig holds two sections pipe perfect align ment theyre brazed together two metal rods machined telescoping joint middle slipped through head tail pipes joinedpull em Out after pipe halves brazed NEW FOURMOST PRODUCTS Bulk head Fitting simple method feed fuel vent tubes through solid bulkheads Drill hole No 18 drill size buikhead firewall up 3/B thick Provides seaied tank compartment eliminates fuelo" 4$ line chaffing Coior coded identification MOULDED NYLON FUELPROOF Weight GM EACH Size 3/32 10 PRICE 2for$195 FOURMOST PRODUCTS 4040 24th Ave Forest Grove OR 97116 talcum powder weight significant factor could probably save two three ounces given medium-sized aircraft Some people may find doesnt work satisfaction however feel worth experiment ing could possibly save overall five six ounces off aircraft because predominant amount paint applied rear center gravity Any other finishing techniques have please feel free submit publica tion Inclosing would like remind readers please send pictures sketches ideas publication need good input everybody perpetuate love Scale modeling Please send information Richard Byron 2506 So 16 1st Circle Omaha NE 68130 CL Navy Carrier/Perry Continued page 54 should light enough allow model settle onto its tail skid model placed smooth surface hook extended end hook should form about 450 angle main part hook way hook can engage arresting cables Bomb Release Fourmost Bombreiease mechanism simple lIght weIght device ideai fun-fly events Fasten unit plane screws provided Attach Springioaded latch thread connect throttle rudder servo Corrosion problem unit molded nylon spring stainless Weight 1/10 OUNCE PRICE $250 503 357-2732 AVAILABLE NOW Prototype Built Flight Tested JB Speosal MK III 84 Mono 78 Pipe Weight 18 lbs2195 TrasI Air 2000 105 Classc Scle Bipla0e 22 lbs 2295 irenral Ak 4000 99 RodaI Eng Classic Bipe 23 lbs2299 Foirke D-VII 88 Genran WA Fighte Bipe 23 lbs2495 Ceseng Sos topw4h Pop 80 Pipe Sopreith Tripehosed 80 Triplane Waco UFF 790 Pipe Waco ATO Lyjock Version 90 Bipe Nreoporr 11 Pebe 85 Pipe 35 Scole Fokker 081 72 Triplone Plans shipped U PS Parcel Post Please add $300 postarje hand/mo fastest sevice send pOstei money order No co D orders sent BEHRENS PLAN SERVICE 31-27 Nealy Ave. Far Rockaway NY 11691 in212 337-6987in model normal three-point attitude well can model flying just above deck hook can no one-third length fuselage should made 3/32-in music wire will strong enough resist straightening out engaging arresting cable tail hook can attached model variety ways photo shows typical installation using -in plywood reinforcements fuselage hardwood block can inset fuselage serve same purpose Hook placement should such end hook forward tail skid/wheel avoid interference missed arresting cables Scratch building very few kits available events scratch building almost necessity Original designs appear contests add interest Carrier flying both contestants spectators standard Class & II models sheeted solid wing construction Strong light wings can carved soild balsa getting balsa required thickness density requires either special order inordinant amount luck Foam cores have used models straight-tapered wings have advantage allowing use waste material core provide support wing sheeting during gluing processthe result being perfectly warp-free wing Built-up sheeted construction offers best opportunity obtaining light structure care used wood selection use glue Bob Reynolds uses jig shown accompaning photos build warp-free perfectlyaligned wings Fairey Firefly models jig allows complete wing dihedral built unit method worth considering especially individual family club antici pates building model particular design Richard L Perry 416 Woodhill Drr Golds boro NC 27530 CL Aerobatics/Paul Continued page 55 hear just remember anytime run plugs products manufactured individuals assuming certain amount risk ordering folks info rmation Stunt orPA MPA contact Wynn Paul 1640 MaywickDr Lexington KY 40504 CL Speed/Hempel Continued page 57 2-in long Flare end tubing using flaring tool Cut small end cone off place cone 5/16-in OD Use taper reamer put sharp edge front cone headpiece should fit cone snugly rocking therefore no jig required parts brazed Clean cone headpipe soap water dry Position headpipe small end cone place base cone flat surface brazing Braze headpipe cone using same procedure described before After cone cools wash soap water remove flux Tailpipe-to-cone Cut 7/32-in ID tubing 11-in long Flare end tubing using flaring tool Cut small end cone off cone 7/32-in OD tailpipe should fit cone snugly rocking therefore no jig required parts brazed Clean cone tailpipe soap water dry Position tailpipe small end cone place base cone flat surface brazing Braze tailpipe cone using same procedures described before After cone cools wash soap water remove flux Use taper reamer working inside cone enlarge hole 7/32-in ID Final Assembly have very simple jig holds two sections pipe perfect alignment being brazed jig made two metal rods 5/16-in OD 3/16-in OD least 12-in long end 5/16-in rod center drill 3/16in hole 1-in deep should done lathe large diameter end front cone should slightly smaller large diameter rear cone Cut file large end front cone will just fit inside large end rear cone parts should thoroughly cleaned soap water dried Fit two rods together Slide headpiece onto 5/16-in rod tailpipe onto 3/16-in rod Use 7/32-in OD tubing spacer fit between tailpipe rod joint 132 Model Aviation RINDYS UNIFLOW TUNT TAD PROFILE*COMBAT*RAT* WIDE & NARROW WEDGE 2. 6 oz Capacities Standard Vent available CUSTOM BLEND FUEL 5--40%Njtro Send 25cents specs CAROLINA TAFFINDER 8345 Delhi Road Charleston Hgts SC 29405 A~ACKER good-looking foam plane ex cellent fun-fly contests Big thick wing washout make docile yet maneuverable Illustrated plans much hardware & large full color decal sheet Wing Span 48 Construc tion All-Foam Radio 4 Channel Engine 19 404995 SWEET STIK simple build & fun flying model Larger version popular Das Little Stik Full-size plans & much hardware cluding motor mounts & hinges Wing Span 54 Construction All-Balsa Ra dio 4 Channel Engine 19-40 T-CRAVF stand-off scale model offering best flight performance Kit builds quickly contains full-size plans de tailed instruction booklet vacuum formed cowl & wheel parts & much hardware Wing Span 55-1/2 Con struction Balsa Radio 4 4995 Channel Engine 2945 Send 50 forMIDWEST PRODUCTS COMPANY complete catalog400 S Indiana Street Hobart Indiana 46342 Fiberglass MaterialsSCALE DOCUMENTATIONCARBON FIBER TAPE Ssquareyards$1500SCALE ORAwINTOS BOOKLETS005 x 1 25 wide choice 6 01 cloth 2 Hour Epoxy Resin$ 500 per qt Mold Release$300 1601 Epoxy Primer IK&R S30O0per gal25ft SOft ft EpoxyPaintmnnerfK&RI S15OOpergalEPLA-TECH$895 $1495 $2695 California Residents add 6% Sales Tax check MoneyINTFRNATIONAL $100 ph Order onlySorry No COOs 1KENZIE l-4$AIVSLOPE ASSOCIATES2317 n 63d Rob Smith RIC AircraftCATALOGS $200 VIGA OREGON 274BB SEATTLE A/A 98103 PO Box 33335 Oranada Hills CA 91344 two rods should fall roughly under majorany bubbles have leak system mustjoining headpipe pipe adapter requires diameter Clamp 3/16-in rodjig vertically inseal leaks must brazeda headpipe end piece design 0a vise Wrap several layers masking tapeoverring easily accessible inspection replacearound 3/16-in rod tailpipe spacerment Machine piece -in OD alumi rest joint cones meet forms aFinish produce professional-looking pipenum stock small trough metal will flow around whilefile Joints smooth Remove little metal as0-ring 0-ring use made silicone capillary action will form nice weld Now youpossible wont weaken joints Sand theis red can purchased rubber ready braze Use same procedure aspipe wet 320 paper remove file marksproducts supplier ordered number ARP before Remember melting rod will flowand follow wet 400 paper steel wool toward heat As rod begins melt worksoap pad such SOS used brighten the flame around joint flow melting rodpipe high luster Working soap padPipe adapter feel gas flow completely aroundaround pipe gives best finish Clean thecylinder through pipe adapter pipe pipe thoroughly water certain theshould smooth possible gases Pressure check use piece automobile gaspipe still has no leaks perform another pressureexiting exhaust port following piston line tubing slip over tailpipe place mycheckin downward motion tried blend inside finger over headpipe hole pipe under water blow gas line detectHeadpipe end piece method use ntinued page 134 WRAMS/Myers Continued page 29 models route separate used general public exhibitors wait lobby enter rest ticket holders can imagine its much fun carrying Quarter Scale model over heads pushing shoving crowd mills around three right-angle turns down low-ceilinged flight stairs also no unloading dock some exhibitors less pleased procedure hasnt improved 13 years 3 Other procedural annoy ances Judging purely places found crowds large part public Comes see models WRAMs will RAM Radio Controlled Models Chicago IL offered number little red boxes house accessories RC systemand couple could lifesavers George thought best item Battery Backer Its part airborne system senses flight pack battery voltagewhen drops below preset value device switches spare pack turns integral beeper might able hearthe thing planes air youll sure hear after landespecially since cant just switch off Another vital item Dual Servo Setterit detects loss transmitters signal sends two servos positions have pre-selected maybe engine-cutoff deploy parachute Other items included low-voltage alarms receiver transmitter LED Go/No-Go boxes same job ESV shirt-pocket timer concepts may new thats no reason ignore June1981 133 hurt hope see fit improve selves model matters exhibitors ers wont display Continued ag 7A REVOLUTIONARY NEW CHARGER C-50/4 MEN AUTOMATIC R/C SYSTEM CHARGER Extends life nicadi Extends capacity nicad Adds reliability nicads never before achieved charger Restores marginal batteries full power potential Batteries can left charge indefinitely damaging cells Fast chargesautomat ically Renders other chargers obsolete Now after i/o years development testing MEN Inc confidently intro duces its revolutionary C-50/4 Auto matic Pulse R/G System Charger unlike other charger have ever used DC charger pulsed charger therefore operates differently giving different resuha suitable control pulse height pulse rate charging batteries accomplished addition Out standing battery reliability produced charger several side benefits occur First batteries can left charger ipdefinitely simply means after flight session can put R/C system charge leave until youre ready fly again nest day next week next yearno need ever wonder about CL Speed/Hempel passage adapter conform downward flow pattern Engine get performance tuned pipe engine must set up properly Nick Sher tells done excellent article ModelAviation May 1979 Running pipe Start engine rich needle setting As turn needle valve leaner engine should come pipe engine will need fuel happens prepared immediately open needle valve about rn needle opened too far engine will fall off pipe happens just repeat process mentioned above get engine back pipe want gratefully acknowledge support have received Luther Roy project ideas criticisms encouragement have extremely valuable excellent machining ability can observed photos pipe adapter flaring tool sincerely hope time readers column make attempt build pipe will appreciate amount effort goes putting together such constructive article hope everyone enjoys article Tell em read Model Aviation Speed column next Speed column will tell modify Cox 049/051 cylinder rpm Gene Hempel 301 North Yale St Garland TX 75042 M icrofilm/Tenny Continued page 63 Relative humidity can affect microfilm pouring sessions much atmosphenc pressure serious about pouring microfilm simple barometer will enable record barometric pressure batch microfilm solution works well pressure different great amount surprised have different results pouring session general humidity can vary quite bit hindering formation good film humidity very high solvent evaporation film warm water can go fast film will cool enough condense moisture happens possible film will blush turn cloudy white Such film will very weak probably can lifted water Try much cooler water solvents will evaporate quickly wait longer before trying lift film 4PATTERN AND04,p 4 HIGH SPEED PROPELLERS oU DUYAIRSCREWft CUSTOM HIGH PERFORMANCE MAPLE PROPELLERS Propeller designed using symmetrical profile Individually precision hand balanced Accurale airfoil pitch Only high quality straight grain Eastern Maple used 8/ X 6% FORMULA 1 lOX 6 11X7 11X7/2 11X8 CUSTOM DESIGN UPON REQUEST SW PRODUCTS 5634 CRYSTAL COURT SANTA ROSA CA 95404 PRONE 707 526SARA Add 5100 P, SiS'O SAAIig charge long charge Just plug system leave till youre ready fly again Second battery tests can done charger example can test open battery cells shorted battery cells hi-leakage cells low ca pacity cells hi-impedance cells conditions can detected early lead disaster new MEN C-S0/4 charger available 3 models cover R/C needs 48 volts/g6 volts 48 volts/60 volts 48 volts/12 volts ca pable charging systems 240 MAH through 4 amps hour capscity new MEN C-S0/4 Charger rep resents latest ate art battery chargers No serious H/C en thusiast should Royal Electronics Sid Gates says appreciate friendship help will soon have RC systems chip want information write Jerry did show Cyclecharger d is- Bradshaw 3619 Hillcrest Lane Sacramento charges recharges battery packs 16-hr CA 95821 telephone number 916 487-9620 rate Also shown prototype Digitester still under development combines functions digital pulse-width meter digital voltmeter digital tach via option kitsitll also have outputs serve bench power supply battery charger servo cycler George hopes get hands describe regular Radio Tech nique column ANNOUNCING THE INTRODUCTION OF THE ALL NEW NELSON COMPETITION 15 ENGINE STANDARD AND R/C AVAILABLE JUNE 1 1981 complete formation send large stamped self-addressed envelope Kustom Kraftsmanship P0 Box 2699 Laguna Hills CA 92653 Dealer inquiries invited 134 Model Aviation
Edition: Model Aviation - 1981/06
Page Numbers: 56, 57, 132, 133, 134
C oRE rot M Speed Flaring tool flaring tool made up two piecesthe base driver shaft base holds tubing shaft inserted inside tubing flares tubing both parts tool must lubricated oil 30 wt motor oil good prevent sticking Place base hard flat surface Cut tubing length insert completely base Insert pilot shaft small end tubing strike large end shaft hammer flare tubing Headpipe-to-cone I will describe two methods joining headpipe front cone Method No 1 stretches front cone headpipe goes inside Method No 2 flares headpipe headpipe goes over cone method requires special flaring tool Both methods equally strong prefer Method No 2 easier once have tool Method No 1 Cut off small end front cone until hole 5/16-in ID Use piece oBi-in wood dowel end rounded expand front cone fit over headpipe Insert dowelworking slowly twistingthrough small end Cut headpipe tubing 1-in longer needed Use reamer taper aft end headpipe tubing should have sharp edge finish Insert tapered end headpipe front cone until angle cone blends headpipe overlap joint should Ys-in strength Cut excess off front cone Wash front cone headpipe thoroughly THIS MONTHS column will cover second final part Jerry Bradshaws article Construct A Pipe first part appeared April 1981 issue After practicing soldering aluminum burning fingers wonder Hot Stuff stands heat burning fineers lets move finiRhinQ thit 56 Model Aviation Two different pipes using different method attach headpipe cone Upper pipe uses Method 2 headpipe flared go over cone lowerpipe uses Method 1 cone stretched tofit over headpipel Pick method appeals Oncethetwo halvesotthepIpeareSIIppeOOnIO simple jig theyre placed vertically jig-rod held vise joint cones meet forms small trough melted brazing metalwillflowallthewayaround forming nice weld soap water dry use piece 5/16in wood dowel jig joining headpipe front cone Put headpipe wood dowel slip front cone place over headpipe use washer 5/1 6-in hole move down inside cone center large end cone See Figure 1 Clamp end dowel comes out headpipe vise cone horizontal Apply flux braze joint using same procedures brazing cone Rotate cone dowel braze around joint heat joint wood dowel will char may catch fire just keep going Once has cooled can clean inside tubing cone Scotch Brite Method No 2 Cut i-in OD tubing Continued page 132 pipe adapter tightened around cyclinder like clamp-ring headpipe end piece brazed headpipe design 0-ring seal easily accessible inspection replacement Note sizes pipe components relative TO 049 June 1981 57 two methods joining headpipein pictures time upper 3 items illustrate Method 1 lower2 items illustrate Method 2 Further illustration Method 2 small end cone cut off place cone 57/32-in 00 far right base flaring tool flared tailpipe piece sticking out right front shaft flaring tool Heres jig holds two sections pipe perfect align ment theyre brazed together two metal rods machined telescoping joint middle slipped through head tail pipes joinedpull em Out after pipe halves brazed NEW FOURMOST PRODUCTS Bulk head Fitting simple method feed fuel vent tubes through solid bulkheads Drill hole No 18 drill size buikhead firewall up 3/B thick Provides seaied tank compartment eliminates fuelo" 4$ line chaffing Coior coded identification MOULDED NYLON FUELPROOF Weight GM EACH Size 3/32 10 PRICE 2for$195 FOURMOST PRODUCTS 4040 24th Ave Forest Grove OR 97116 talcum powder weight significant factor could probably save two three ounces given medium-sized aircraft Some people may find doesnt work satisfaction however feel worth experiment ing could possibly save overall five six ounces off aircraft because predominant amount paint applied rear center gravity Any other finishing techniques have please feel free submit publica tion Inclosing would like remind readers please send pictures sketches ideas publication need good input everybody perpetuate love Scale modeling Please send information Richard Byron 2506 So 16 1st Circle Omaha NE 68130 CL Navy Carrier/Perry Continued page 54 should light enough allow model settle onto its tail skid model placed smooth surface hook extended end hook should form about 450 angle main part hook way hook can engage arresting cables Bomb Release Fourmost Bombreiease mechanism simple lIght weIght device ideai fun-fly events Fasten unit plane screws provided Attach Springioaded latch thread connect throttle rudder servo Corrosion problem unit molded nylon spring stainless Weight 1/10 OUNCE PRICE $250 503 357-2732 AVAILABLE NOW Prototype Built Flight Tested JB Speosal MK III 84 Mono 78 Pipe Weight 18 lbs2195 TrasI Air 2000 105 Classc Scle Bipla0e 22 lbs 2295 irenral Ak 4000 99 RodaI Eng Classic Bipe 23 lbs2299 Foirke D-VII 88 Genran WA Fighte Bipe 23 lbs2495 Ceseng Sos topw4h Pop 80 Pipe Sopreith Tripehosed 80 Triplane Waco UFF 790 Pipe Waco ATO Lyjock Version 90 Bipe Nreoporr 11 Pebe 85 Pipe 35 Scole Fokker 081 72 Triplone Plans shipped U PS Parcel Post Please add $300 postarje hand/mo fastest sevice send pOstei money order No co D orders sent BEHRENS PLAN SERVICE 31-27 Nealy Ave. Far Rockaway NY 11691 in212 337-6987in model normal three-point attitude well can model flying just above deck hook can no one-third length fuselage should made 3/32-in music wire will strong enough resist straightening out engaging arresting cable tail hook can attached model variety ways photo shows typical installation using -in plywood reinforcements fuselage hardwood block can inset fuselage serve same purpose Hook placement should such end hook forward tail skid/wheel avoid interference missed arresting cables Scratch building very few kits available events scratch building almost necessity Original designs appear contests add interest Carrier flying both contestants spectators standard Class & II models sheeted solid wing construction Strong light wings can carved soild balsa getting balsa required thickness density requires either special order inordinant amount luck Foam cores have used models straight-tapered wings have advantage allowing use waste material core provide support wing sheeting during gluing processthe result being perfectly warp-free wing Built-up sheeted construction offers best opportunity obtaining light structure care used wood selection use glue Bob Reynolds uses jig shown accompaning photos build warp-free perfectlyaligned wings Fairey Firefly models jig allows complete wing dihedral built unit method worth considering especially individual family club antici pates building model particular design Richard L Perry 416 Woodhill Drr Golds boro NC 27530 CL Aerobatics/Paul Continued page 55 hear just remember anytime run plugs products manufactured individuals assuming certain amount risk ordering folks info rmation Stunt orPA MPA contact Wynn Paul 1640 MaywickDr Lexington KY 40504 CL Speed/Hempel Continued page 57 2-in long Flare end tubing using flaring tool Cut small end cone off place cone 5/16-in OD Use taper reamer put sharp edge front cone headpiece should fit cone snugly rocking therefore no jig required parts brazed Clean cone headpipe soap water dry Position headpipe small end cone place base cone flat surface brazing Braze headpipe cone using same procedure described before After cone cools wash soap water remove flux Tailpipe-to-cone Cut 7/32-in ID tubing 11-in long Flare end tubing using flaring tool Cut small end cone off cone 7/32-in OD tailpipe should fit cone snugly rocking therefore no jig required parts brazed Clean cone tailpipe soap water dry Position tailpipe small end cone place base cone flat surface brazing Braze tailpipe cone using same procedures described before After cone cools wash soap water remove flux Use taper reamer working inside cone enlarge hole 7/32-in ID Final Assembly have very simple jig holds two sections pipe perfect alignment being brazed jig made two metal rods 5/16-in OD 3/16-in OD least 12-in long end 5/16-in rod center drill 3/16in hole 1-in deep should done lathe large diameter end front cone should slightly smaller large diameter rear cone Cut file large end front cone will just fit inside large end rear cone parts should thoroughly cleaned soap water dried Fit two rods together Slide headpiece onto 5/16-in rod tailpipe onto 3/16-in rod Use 7/32-in OD tubing spacer fit between tailpipe rod joint 132 Model Aviation RINDYS UNIFLOW TUNT TAD PROFILE*COMBAT*RAT* WIDE & NARROW WEDGE 2. 6 oz Capacities Standard Vent available CUSTOM BLEND FUEL 5--40%Njtro Send 25cents specs CAROLINA TAFFINDER 8345 Delhi Road Charleston Hgts SC 29405 A~ACKER good-looking foam plane ex cellent fun-fly contests Big thick wing washout make docile yet maneuverable Illustrated plans much hardware & large full color decal sheet Wing Span 48 Construc tion All-Foam Radio 4 Channel Engine 19 404995 SWEET STIK simple build & fun flying model Larger version popular Das Little Stik Full-size plans & much hardware cluding motor mounts & hinges Wing Span 54 Construction All-Balsa Ra dio 4 Channel Engine 19-40 T-CRAVF stand-off scale model offering best flight performance Kit builds quickly contains full-size plans de tailed instruction booklet vacuum formed cowl & wheel parts & much hardware Wing Span 55-1/2 Con struction Balsa Radio 4 4995 Channel Engine 2945 Send 50 forMIDWEST PRODUCTS COMPANY complete catalog400 S Indiana Street Hobart Indiana 46342 Fiberglass MaterialsSCALE DOCUMENTATIONCARBON FIBER TAPE Ssquareyards$1500SCALE ORAwINTOS BOOKLETS005 x 1 25 wide choice 6 01 cloth 2 Hour Epoxy Resin$ 500 per qt Mold Release$300 1601 Epoxy Primer IK&R S30O0per gal25ft SOft ft EpoxyPaintmnnerfK&RI S15OOpergalEPLA-TECH$895 $1495 $2695 California Residents add 6% Sales Tax check MoneyINTFRNATIONAL $100 ph Order onlySorry No COOs 1KENZIE l-4$AIVSLOPE ASSOCIATES2317 n 63d Rob Smith RIC AircraftCATALOGS $200 VIGA OREGON 274BB SEATTLE A/A 98103 PO Box 33335 Oranada Hills CA 91344 two rods should fall roughly under majorany bubbles have leak system mustjoining headpipe pipe adapter requires diameter Clamp 3/16-in rodjig vertically inseal leaks must brazeda headpipe end piece design 0a vise Wrap several layers masking tapeoverring easily accessible inspection replacearound 3/16-in rod tailpipe spacerment Machine piece -in OD alumi rest joint cones meet forms aFinish produce professional-looking pipenum stock small trough metal will flow around whilefile Joints smooth Remove little metal as0-ring 0-ring use made silicone capillary action will form nice weld Now youpossible wont weaken joints Sand theis red can purchased rubber ready braze Use same procedure aspipe wet 320 paper remove file marksproducts supplier ordered number ARP before Remember melting rod will flowand follow wet 400 paper steel wool toward heat As rod begins melt worksoap pad such SOS used brighten the flame around joint flow melting rodpipe high luster Working soap padPipe adapter feel gas flow completely aroundaround pipe gives best finish Clean thecylinder through pipe adapter pipe pipe thoroughly water certain theshould smooth possible gases Pressure check use piece automobile gaspipe still has no leaks perform another pressureexiting exhaust port following piston line tubing slip over tailpipe place mycheckin downward motion tried blend inside finger over headpipe hole pipe under water blow gas line detectHeadpipe end piece method use ntinued page 134 WRAMS/Myers Continued page 29 models route separate used general public exhibitors wait lobby enter rest ticket holders can imagine its much fun carrying Quarter Scale model over heads pushing shoving crowd mills around three right-angle turns down low-ceilinged flight stairs also no unloading dock some exhibitors less pleased procedure hasnt improved 13 years 3 Other procedural annoy ances Judging purely places found crowds large part public Comes see models WRAMs will RAM Radio Controlled Models Chicago IL offered number little red boxes house accessories RC systemand couple could lifesavers George thought best item Battery Backer Its part airborne system senses flight pack battery voltagewhen drops below preset value device switches spare pack turns integral beeper might able hearthe thing planes air youll sure hear after landespecially since cant just switch off Another vital item Dual Servo Setterit detects loss transmitters signal sends two servos positions have pre-selected maybe engine-cutoff deploy parachute Other items included low-voltage alarms receiver transmitter LED Go/No-Go boxes same job ESV shirt-pocket timer concepts may new thats no reason ignore June1981 133 hurt hope see fit improve selves model matters exhibitors ers wont display Continued ag 7A REVOLUTIONARY NEW CHARGER C-50/4 MEN AUTOMATIC R/C SYSTEM CHARGER Extends life nicadi Extends capacity nicad Adds reliability nicads never before achieved charger Restores marginal batteries full power potential Batteries can left charge indefinitely damaging cells Fast chargesautomat ically Renders other chargers obsolete Now after i/o years development testing MEN Inc confidently intro duces its revolutionary C-50/4 Auto matic Pulse R/G System Charger unlike other charger have ever used DC charger pulsed charger therefore operates differently giving different resuha suitable control pulse height pulse rate charging batteries accomplished addition Out standing battery reliability produced charger several side benefits occur First batteries can left charger ipdefinitely simply means after flight session can put R/C system charge leave until youre ready fly again nest day next week next yearno need ever wonder about CL Speed/Hempel passage adapter conform downward flow pattern Engine get performance tuned pipe engine must set up properly Nick Sher tells done excellent article ModelAviation May 1979 Running pipe Start engine rich needle setting As turn needle valve leaner engine should come pipe engine will need fuel happens prepared immediately open needle valve about rn needle opened too far engine will fall off pipe happens just repeat process mentioned above get engine back pipe want gratefully acknowledge support have received Luther Roy project ideas criticisms encouragement have extremely valuable excellent machining ability can observed photos pipe adapter flaring tool sincerely hope time readers column make attempt build pipe will appreciate amount effort goes putting together such constructive article hope everyone enjoys article Tell em read Model Aviation Speed column next Speed column will tell modify Cox 049/051 cylinder rpm Gene Hempel 301 North Yale St Garland TX 75042 M icrofilm/Tenny Continued page 63 Relative humidity can affect microfilm pouring sessions much atmosphenc pressure serious about pouring microfilm simple barometer will enable record barometric pressure batch microfilm solution works well pressure different great amount surprised have different results pouring session general humidity can vary quite bit hindering formation good film humidity very high solvent evaporation film warm water can go fast film will cool enough condense moisture happens possible film will blush turn cloudy white Such film will very weak probably can lifted water Try much cooler water solvents will evaporate quickly wait longer before trying lift film 4PATTERN AND04,p 4 HIGH SPEED PROPELLERS oU DUYAIRSCREWft CUSTOM HIGH PERFORMANCE MAPLE PROPELLERS Propeller designed using symmetrical profile Individually precision hand balanced Accurale airfoil pitch Only high quality straight grain Eastern Maple used 8/ X 6% FORMULA 1 lOX 6 11X7 11X7/2 11X8 CUSTOM DESIGN UPON REQUEST SW PRODUCTS 5634 CRYSTAL COURT SANTA ROSA CA 95404 PRONE 707 526SARA Add 5100 P, SiS'O SAAIig charge long charge Just plug system leave till youre ready fly again Second battery tests can done charger example can test open battery cells shorted battery cells hi-leakage cells low ca pacity cells hi-impedance cells conditions can detected early lead disaster new MEN C-S0/4 charger available 3 models cover R/C needs 48 volts/g6 volts 48 volts/60 volts 48 volts/12 volts ca pable charging systems 240 MAH through 4 amps hour capscity new MEN C-S0/4 Charger rep resents latest ate art battery chargers No serious H/C en thusiast should Royal Electronics Sid Gates says appreciate friendship help will soon have RC systems chip want information write Jerry did show Cyclecharger d is- Bradshaw 3619 Hillcrest Lane Sacramento charges recharges battery packs 16-hr CA 95821 telephone number 916 487-9620 rate Also shown prototype Digitester still under development combines functions digital pulse-width meter digital voltmeter digital tach via option kitsitll also have outputs serve bench power supply battery charger servo cycler George hopes get hands describe regular Radio Tech nique column ANNOUNCING THE INTRODUCTION OF THE ALL NEW NELSON COMPETITION 15 ENGINE STANDARD AND R/C AVAILABLE JUNE 1 1981 complete formation send large stamped self-addressed envelope Kustom Kraftsmanship P0 Box 2699 Laguna Hills CA 92653 Dealer inquiries invited 134 Model Aviation