A modelers guide selection use proper tools important construction step H Ned Kragness Building model exercise cutting shaping bits pieces assembled final product assemble model properly builders spend lot time energy making holes technique making holes varies according size shape hole material being cut Modelers must learn cut specific holes specific materials Regardless shape hole begin drilling aperture basically round large irregularly shaped cutout what youre after should still draw initial hole basically round pass jigsaw blade file through work size shape inside however want hole smoothly cut precisely located sized few extra steps should become automatic too often want -inch hole reach inch jobbers drill Dont Good holesare produced starting smallat least smaller desired dimension Youll understand read further accurately locate hole draw scribe centerlines extend beyond edges desired hole make punchmark cross locator lines will remain after punchmark gone will help positioning drill start hole Holes drilled metal usually have smooth inner walls fairly clean edges Wood fibers other hand tend tear rather cut cleanly Therefore holes drilled wood will rough splinters splits Splintering worst drill has exited because feed pressure pushes last weak unsupported fibers out place before cutting edges have chance work splintering exit point can prevented placing piece scrap wood snugly against underside surface being drilled drill point enters scrap fibers around center cannot bend break cut neatly Wood-grain fibers tend deflect drill off course drill follows path between strongest fibers hole drifts another reason drilling undersize example intended -inch hole made 3A6jobbers fractional drill drifting discovered can correct error using small round file enlarge hole toward its intended location before redrilling small round files whether rat-tail round bastard type generally taper slightly can used tapered reamers twist drill will come handy understand what twist drill canand cantdo lets examine closely First notice twist drill lacks true point Instead has small chisel tip edge crosswise drillor dead center chisel tip must forced piece being worked drill may wander skate chisel will scrape surface Twist drills dont have true points Instead have chisel tips edges crosswise drill 94 Model Aviation ls gauges reamers Note bent bit foreground cheap drill set Dont waste money get what pay Dead Center Thats its important make center-punch depression should large enough admit entire chisel cutting lips can begin work drill held punch crater material too fragile withstand heavy punch stroke make light Use smaller drill begin enlarging opening until its ready accept larger drill dead center Remember smaller drills have smaller chisels cutting lips drill almost invariably unequal length youve ever sharpened drill understand limits precision Drill sharpening never exact drills always makes holes larger nominal size longer lip P-30 CLASS FREE FLIGHT MODEL KIT $ 3395 POSTPAID $7 wHa1P3O BY JOHN ODWYER WINNING SINCE 1982 REDI-CUT RIBS PREFORMED TUBE MFG BY MODEL AIRCRAFT LABS 108 S LEE STREET IRVING TEXAS 75060 sweeps through greater diameter feed pressure actually bends drill forcing lip make heavier cut again sweeping through larger circle Precision holes can still made however trick drill few thousandths inch undersize ream achieve final diameter Reamers make cuts side walls hole straight flutes usually given very small taper entry end can enter undersized drill hole gradually Continued page 103 MIC LEcTRIC MICRO-JET Ducted-Fan Syatem Package EntIre module weighs lust 28 grams AAAA ounce thrust Files models 6050 sq up Ic 3 oz OOI System Pecicege Includes motor 3x 5OmAh MCd battery wiflog hemeas charger pads 14AAKA end complete Instructions build fan module MICRO-JET System Package $1995 Ptoce 4dS25Opu5/h~dh,g oyruuI p sex iiau O@inSin@me NC 27532 eeeeeeeseeeeeeeeeeeeaeeeee CC GOODIES 2828 Cochran St Suite 281805 581-5061 Simi Valley Ca 93065 aC LACCESSORIES93 Ca SPAN NOW IN 36 & 72LENGTHS CC e LITESPAN LIGHTESTC C IRON-ON COVERING FOF L AIRCRAFT TO 6O SPAN USES BALSALOC ADHESIVE FUEL PROOFC PAINTABL TOUGH! C 9 COLORS AVAILABLE ELLOW WHITE UIIANULuLUL SILVER CREAM & DARK GREEN EASY TO APPLY WORKS COMPOUND CURVES WELL LY NON-TOXIC BALSALOC ADHESIVE TO e FRAME WITH SMALL DAMP SPONGE ALLOW C C TO DRYTHEN AFFIX LITESPAN WITH IRON INK WITH IRON OR HEAT GUN 20 x 36 e e SHEETS SPEC $280 20 x 72 SPEC $560 e 110 GRAM BALSALOC REG $450 SPEC$360 S&HTO7SHTS 20X360R45HT520X72 C LITESPAN LSALOC $325 S & H TO C LE THIS QUANTITY $550 AYLOR POWER PACER CC e I-IALID TC liNED e GREAT AIRPLAN & CYCLES TX & RX R CHARG ERIESSHOWSwet C BATTERY CAPACITY INING WARNS OF BAD CELLS IN PACK e BEFORE ATTEMPTING TO FLY AIRCRAFT C IL $8995 SPEC $7995 SHIP INOL e ALL ITEMS ADD LOCAL SALES TAX IN CA CATALOG $100 USA $300 FOREIGN PRICES ARE CASH S6kMORE 20% DEPOSIT-COD eeeee eC e C C CC esecee CCC CCCC Bandits 1 OClock October 1993 95 Tap-and-die set 00-90 0-80 1-72 2-56 Sets available number sources -o r-u aIIu Nuw r-lu uursair ridiie iou will have much fun building s 3-6 year old will have Flyingit Kit includes full-sized patterns complete Instructions color ohoto list of made oa $400 P & h vii Res add 6% sales sax Specify plan wanled Flight Line Toys PO Box 3484 Sorinofield MO 65808 type building requires ability Cut obvious outside fine cuts inside cuts lighten parts requires jigsaw detachable blade can feed through hole make cut repeat procedure Dremel saw did conveniently blade Dremel has pin end tension blade As searched scroll/jigsaw big price range attendant quality considered mid-range modela Delta cost approximately $600 Aside high price blade attached collar undone redone inside cuL didnt really seem practical bought Searss top-of-the-line unit sturdy machine bushed pivot points saw arms Ive using three years would rate satisfactory Id also have say doesnt cut better original Dremel Considering infrequently use saw couldnt justify top-of-the line suggest watching Sunday ads find tools right price although recommend get Dremel stick thing jigsaw couldnt cut blocks well could cut smaller blocks though throat capability jigsaws lI4 two inches really wont cut muchand cuts clean dont handle big blocks well makes doing fuselage led think band saw would everything wanted Again make some choices Did want quality piece what size what price etc just couldnt justify $400 $500 good 14-inch band saw considering its annual use Sorry its habit too years cost/benefit analysis Fortunately about time visiting John Hill small 10inch band saw made Ohio Forge explained Ohio Forge house brand made Taiwan imported Home Depot Texas area bet its same other companies importing under brand names big difference price bought just under $100 its still available CatalogsThe Best Scale Best Scale$400 ASP Model aircraft Plans Handbook$500 ASP Scale Drawing Plans Book$500 RC Model World Const Guide$600 VTH German Plans Book$600 dd dd SLUG PM. je -5 d6I Call 909 6853959 credit cord IJNGMEISTER UCKER 133 V1 iM SCALE 65 SPAN 90-120 ENGINES PLAI4S 53390 P Al ILUUO- MASTERS MAD WINY OThERS Job Holman Box 741 San Berdo CA 92402. price Look around Ive really liked first time used cuts balsa plywood like butterand straight too Top blocks snap Fitting cowls also easy short does what its supposed course has its drawbacks exceptional buy price however because uses three wheels constant flexing blade increases chance breakage weld especially true use prolonged continuous Setting up properly also takes little getting used also neat new table-size unit Delta would recommend Its 71/2-inch two-wheel tabletop band saw priced approximately $180 available looking would have bought Its about same size has same cutting capacity 10-inch Old Forge band saw two wheels instead three blade breakage less likely Check out slKragness Continued page 95 begin heaviest cutting Since flute made entirely cutting metal cut must shallow enough prevent twisting forces increasing point break tool Reamers available either straight spiral flutes Since flutes twist drill similar spiral reamer can ream twist drill provided remove few thousandths inch Whether use reamer twist drill hand turn tool direction both going hole coming back out Dont try enlarge hole diameter 1/sd inch Theres lot cutting edge work good tools expensiveand brittle because theyre hard Use lubricant reaming metal drilling reaming deep holes remember chips will fill clog flutes Withdraw reamer twist drill hole clear flutes prevent 4000 different22000 3-view drawings color FOTOPAAkS Including kO-FAN Antiques Military Civilian Helicopters Sailpianes Catalog/Guide $500Ovum. $1000 THE LEADER IN COMPETITION NEW DIA 15 16 NEW PRO SERIES 3 9 TI NEW HIGH TECH AIRFOIL SECTION 10T020% INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCH 53/34 634 72B33/,456 8334568 84566/7 9456677/ 104586/7 106W8W i136EW II5W 116EW 1167 124W 125W 1258 1356 1456 1556 164N 16678 RC PYLON RACING SERIES 500 DIA PITCH 7 5N5/N SERIES 400C 866/777/ 9777 W WIDE BLADE EW EXTRA WIDE N NARROW October 1993 103 PROPELLERS 4 ES 100 THP DESIGN TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALLTHE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP 66Vz 77 8 677 8 677/,8 67 678 Model Airplane Design Performance AILERON ELEVATOR Modeler RUDDEI book must model airplane builder flyers library covers model airplane design performance modeler mind Instead complicated mathematics 280 ROLL pages numerous illustrations examples used Topics arranged sequence leads illustrated AILERON example design radio control model airplane PITCH zy Toll Free Orders MC VISA & AMEX 1-800-364-BOOK Check orM 0 Challenge Engineering Inc PO Box 67 New Baden TX 77870 TX residents add tax -- US currency Early Developments Terminology Aerodynamics Stability Control Performance Design Author Chevalierprofessor emeritus aeros p ace engineer ing 50 years model building flying AMA 7503 designer several RPVs consultant RPV manufac turers NASA research scientist professional engineer commercial pilot $2495 shinnin2 handina jamming breaking tool Drilling thin metal another thing altogether Well define thin metal anything thinner half diameter drill Difficulty arises because drill removes its own central pivot bearing before cutting lips flutes have penetrated far enough metal supported cylindrical portion hole lips hooks metal other drill deflects wobbles work piece drill bends breaks lucky produces star- keyhole-shaped hole surrounded burrs Again can prevent problem making sure piece solidly backed scrap will hold drill point centered until flutes have penetrated metal scrap may clamped tack soldered secured cyanoacrylate CyA glue holds entering drill point position Its best produce holes thin sheet metal punching first enlarging reaming fretsawing nibbling nibbler small punch-and-die mounted plierlike handles Insert punch-and-die through hole punch metal away bit bit Bernz torch people used sell nibbler less $10 may still available Drills come sets Most commonly seen jobbers drill set graduated i/Mdiameter steps Another type coded whole numbersone through 80 usually sold two groupsone through 60 61 through 80 Letter-coded drill sets through Z metric sets also available Neither number nor letter-coded sets uniformly graduated Modelers use fractional number-coded drills almost exclusively reason wide range drill sizes available holes must drilled precisely enough can tapped threaded threads cut some metal must remain hole example 2-56 screw will slip #40086diameterdrill hole thread hole tap #50 hole 0070-inch-diameter should drilled Dont buy inexpensive drill sets look good-quality set first youll see difference should have set jobbers drills fractional ranging i/I6 inch through 1/64-inch increments Good-quality drills available carbon steel high-speed steel latter useful mainly machine shops drilling stainless steel theyre much expensive set jewelers broaches can find useful inexpensive jewelers broach tapered much like needle since ground five-sided cross-section has five sharp edges can make disk hole cutter thin sheet balsa sharpening piece tubing end Cutting done rotating punching cutting edge should toothed rather being razor sharp Either brass aluminum tubing can used nick end old razor blade make lot little teeth Now weve learned make neat holes its time consider what put Lets begin screws youre going use screws holes should threaded As noted earlier threading done taps Taps hard steel screws flutes create cutting edges thread teeth accept chips produced cutting tap size theres specific corresponding drill size Using right size drill will ensure enough metal remains hole threading Screw tap hole rotate back forth prevent jamming breaking Remove tap entirely hole clear chips Use lubricant except working brass cast iron kinds small screws washers nuts now available size fasteners used can reduced dimensions approximately scale Small fasteners made use instruments other compact devices like REALISTIC MOTION CONTROL VALVES valves feature exhaust speed control UP1 Independant speed control & switching struts $2895 UP2Strut & door control Mustangs Door opens Strut lowers door closes Door opens strut raises door closes $7465 UP3 Strut & door control valve P47 Door opens-strut lowers-door stays openStrut raisesdoor closes$7465 Door Cylinders metal 5/16 bore1 & 15 inch stroke $1900 6 inch diameter scale Mustang wheels Machined bar stock-8 spoke hub bronze bearings solid foam tire weight 10 oz $11500 pair Dealer inquiries welcome RENO UNLIMITED MUSTANG RETRACTS rating jiII Totally enclosed IIIImechanism I4H-all metal 1 inch air cylinder 85degree retraction Fits between ribs$57900 including UP2 valve ULTRA PRECISION Technical Services Ltd 1244 Honeysuckle Crescent Oakville OntarioL6H 2S8 Canada Phone 416842 1703 prices US funds Shipping valves & cylinders $450 104 Model Aviation AN% ThE MOV HoWARDucXEVAIJpA RI GAIN CONTROL ng control can nightmare wrong response given command can take its toll model nerves walletl Radio South know feel about hobby too avid RO enthusiasts nearly half century combined experience modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical in-house radio service can depend Radio South customer satisfaction isnt just motto Its way life Let us put back control Futaba K1AFT CN jAIAThONICS 5524 N Palafox Pensacola FL 32503 repair information 904 434-0909 1-800-962-7802 Toll Free Order Line lOrders Only Pleasell eyeglasses usually have two small screws attach earpieces lens frame common size 00-90 045 diameter screw surprisingly inexpensive corresponding tap costs about dollar Unfortunately die put threads rod costs considerably Happily Sig Manufacturing Co has restored small fasteners its catalog together tap die set 00-90 0-80 1-72 2-56 thread sizes Youll also need correct drills taps 60 /64 53 50 48 43 collection will cost about 40 bucks will last years Another possible source model railroad dealer small screws come several head styleshex flat round etcand look particularly attractive Scale models also surprisingly strong wood balsa trick harden wood thin variety CyA glue Drill wood undersize tap drill apply glue inside hole glue has thoroughly cured redrill tap drill size Treat hole glue again redrill tap metal hole Youll surprised strong positive fastener becomes caution absolutely certain glue has cured youll end up permanently installing drill tap Round stock Modelers frequently need round wood represent such items steel tubing pipes Although dowels hobby shop often work satisfactorily regularly find ourselves trying sand scrape piece square stock round stock Unfortunately round stock often turns out visibly not-round Another reason making own round stock hobby shop dowels often made intentionally oversize use drive fits furniture joints among other things unusual buy piece /s dowel fit inside piece 5A2 OD tubing find dowel wont fit through tube Dowels once made driving wooden sticks through successively smaller sharp-edged holes hardened steel plates may still made way such dowel plates hard find would too expensive too large purposes can however imitate technique using holes drill gauges make sticks smaller convert square round Put point stick select drill-gauge hole will just take off corners square stock barely resist round stock Push tap stick through hole Progress hole next making several passes through necessary Drill gauges come both jobbers numbered sizes Jobbers sizes range Y16 inch through ri inch Al-inch increments Numbered sizes range No 1 0228 inch through No 60 040 inch 60 steps purchased gauges Sears 1980 $429 about 2 inches six inches made hardened 1/is steel sheet Theyre handy conventional role addition special use described above have Everything need know fashion well-made hole size location suits purpose cale/Troy Continued page 68 display WRAM show New York last winter thousands treated full view fine Storch features numerous operating appointments including flaps latching cabin door bomb release landing light trim tabs accurate telescoping landing gear model uses Futaba 7 UAF eight servos SR 1400 mAb batteries inverted OS 91 two-stroke engine spans 93 inches weighs 14 pounds Robs Fieseler Storch FI-156 C-3/Trop risk engines performance anything less True AAC ABC piston/cylinder assemblies Now available over 25 different types popular engines choice professional modelers worldwide Send $200 1993 catalog Performance Specialties ox 3146 nerville NV 89410 Phone 702 265-7523 FAX 702 265-7522 October 1993 105 ne
Edition: Model Aviation - 1993/10
Page Numbers: 94, 95, 103, 104, 105
A modelers guide selection use proper tools important construction step H Ned Kragness Building model exercise cutting shaping bits pieces assembled final product assemble model properly builders spend lot time energy making holes technique making holes varies according size shape hole material being cut Modelers must learn cut specific holes specific materials Regardless shape hole begin drilling aperture basically round large irregularly shaped cutout what youre after should still draw initial hole basically round pass jigsaw blade file through work size shape inside however want hole smoothly cut precisely located sized few extra steps should become automatic too often want -inch hole reach inch jobbers drill Dont Good holesare produced starting smallat least smaller desired dimension Youll understand read further accurately locate hole draw scribe centerlines extend beyond edges desired hole make punchmark cross locator lines will remain after punchmark gone will help positioning drill start hole Holes drilled metal usually have smooth inner walls fairly clean edges Wood fibers other hand tend tear rather cut cleanly Therefore holes drilled wood will rough splinters splits Splintering worst drill has exited because feed pressure pushes last weak unsupported fibers out place before cutting edges have chance work splintering exit point can prevented placing piece scrap wood snugly against underside surface being drilled drill point enters scrap fibers around center cannot bend break cut neatly Wood-grain fibers tend deflect drill off course drill follows path between strongest fibers hole drifts another reason drilling undersize example intended -inch hole made 3A6jobbers fractional drill drifting discovered can correct error using small round file enlarge hole toward its intended location before redrilling small round files whether rat-tail round bastard type generally taper slightly can used tapered reamers twist drill will come handy understand what twist drill canand cantdo lets examine closely First notice twist drill lacks true point Instead has small chisel tip edge crosswise drillor dead center chisel tip must forced piece being worked drill may wander skate chisel will scrape surface Twist drills dont have true points Instead have chisel tips edges crosswise drill 94 Model Aviation ls gauges reamers Note bent bit foreground cheap drill set Dont waste money get what pay Dead Center Thats its important make center-punch depression should large enough admit entire chisel cutting lips can begin work drill held punch crater material too fragile withstand heavy punch stroke make light Use smaller drill begin enlarging opening until its ready accept larger drill dead center Remember smaller drills have smaller chisels cutting lips drill almost invariably unequal length youve ever sharpened drill understand limits precision Drill sharpening never exact drills always makes holes larger nominal size longer lip P-30 CLASS FREE FLIGHT MODEL KIT $ 3395 POSTPAID $7 wHa1P3O BY JOHN ODWYER WINNING SINCE 1982 REDI-CUT RIBS PREFORMED TUBE MFG BY MODEL AIRCRAFT LABS 108 S LEE STREET IRVING TEXAS 75060 sweeps through greater diameter feed pressure actually bends drill forcing lip make heavier cut again sweeping through larger circle Precision holes can still made however trick drill few thousandths inch undersize ream achieve final diameter Reamers make cuts side walls hole straight flutes usually given very small taper entry end can enter undersized drill hole gradually Continued page 103 MIC LEcTRIC MICRO-JET Ducted-Fan Syatem Package EntIre module weighs lust 28 grams AAAA ounce thrust Files models 6050 sq up Ic 3 oz OOI System Pecicege Includes motor 3x 5OmAh MCd battery wiflog hemeas charger pads 14AAKA end complete Instructions build fan module MICRO-JET System Package $1995 Ptoce 4dS25Opu5/h~dh,g oyruuI p sex iiau O@inSin@me NC 27532 eeeeeeeseeeeeeeeeeeeaeeeee CC GOODIES 2828 Cochran St Suite 281805 581-5061 Simi Valley Ca 93065 aC LACCESSORIES93 Ca SPAN NOW IN 36 & 72LENGTHS CC e LITESPAN LIGHTESTC C IRON-ON COVERING FOF L AIRCRAFT TO 6O SPAN USES BALSALOC ADHESIVE FUEL PROOFC PAINTABL TOUGH! C 9 COLORS AVAILABLE ELLOW WHITE UIIANULuLUL SILVER CREAM & DARK GREEN EASY TO APPLY WORKS COMPOUND CURVES WELL LY NON-TOXIC BALSALOC ADHESIVE TO e FRAME WITH SMALL DAMP SPONGE ALLOW C C TO DRYTHEN AFFIX LITESPAN WITH IRON INK WITH IRON OR HEAT GUN 20 x 36 e e SHEETS SPEC $280 20 x 72 SPEC $560 e 110 GRAM BALSALOC REG $450 SPEC$360 S&HTO7SHTS 20X360R45HT520X72 C LITESPAN LSALOC $325 S & H TO C LE THIS QUANTITY $550 AYLOR POWER PACER CC e I-IALID TC liNED e GREAT AIRPLAN & CYCLES TX & RX R CHARG ERIESSHOWSwet C BATTERY CAPACITY INING WARNS OF BAD CELLS IN PACK e BEFORE ATTEMPTING TO FLY AIRCRAFT C IL $8995 SPEC $7995 SHIP INOL e ALL ITEMS ADD LOCAL SALES TAX IN CA CATALOG $100 USA $300 FOREIGN PRICES ARE CASH S6kMORE 20% DEPOSIT-COD eeeee eC e C C CC esecee CCC CCCC Bandits 1 OClock October 1993 95 Tap-and-die set 00-90 0-80 1-72 2-56 Sets available number sources -o r-u aIIu Nuw r-lu uursair ridiie iou will have much fun building s 3-6 year old will have Flyingit Kit includes full-sized patterns complete Instructions color ohoto list of made oa $400 P & h vii Res add 6% sales sax Specify plan wanled Flight Line Toys PO Box 3484 Sorinofield MO 65808 type building requires ability Cut obvious outside fine cuts inside cuts lighten parts requires jigsaw detachable blade can feed through hole make cut repeat procedure Dremel saw did conveniently blade Dremel has pin end tension blade As searched scroll/jigsaw big price range attendant quality considered mid-range modela Delta cost approximately $600 Aside high price blade attached collar undone redone inside cuL didnt really seem practical bought Searss top-of-the-line unit sturdy machine bushed pivot points saw arms Ive using three years would rate satisfactory Id also have say doesnt cut better original Dremel Considering infrequently use saw couldnt justify top-of-the line suggest watching Sunday ads find tools right price although recommend get Dremel stick thing jigsaw couldnt cut blocks well could cut smaller blocks though throat capability jigsaws lI4 two inches really wont cut muchand cuts clean dont handle big blocks well makes doing fuselage led think band saw would everything wanted Again make some choices Did want quality piece what size what price etc just couldnt justify $400 $500 good 14-inch band saw considering its annual use Sorry its habit too years cost/benefit analysis Fortunately about time visiting John Hill small 10inch band saw made Ohio Forge explained Ohio Forge house brand made Taiwan imported Home Depot Texas area bet its same other companies importing under brand names big difference price bought just under $100 its still available CatalogsThe Best Scale Best Scale$400 ASP Model aircraft Plans Handbook$500 ASP Scale Drawing Plans Book$500 RC Model World Const Guide$600 VTH German Plans Book$600 dd dd SLUG PM. je -5 d6I Call 909 6853959 credit cord IJNGMEISTER UCKER 133 V1 iM SCALE 65 SPAN 90-120 ENGINES PLAI4S 53390 P Al ILUUO- MASTERS MAD WINY OThERS Job Holman Box 741 San Berdo CA 92402. price Look around Ive really liked first time used cuts balsa plywood like butterand straight too Top blocks snap Fitting cowls also easy short does what its supposed course has its drawbacks exceptional buy price however because uses three wheels constant flexing blade increases chance breakage weld especially true use prolonged continuous Setting up properly also takes little getting used also neat new table-size unit Delta would recommend Its 71/2-inch two-wheel tabletop band saw priced approximately $180 available looking would have bought Its about same size has same cutting capacity 10-inch Old Forge band saw two wheels instead three blade breakage less likely Check out slKragness Continued page 95 begin heaviest cutting Since flute made entirely cutting metal cut must shallow enough prevent twisting forces increasing point break tool Reamers available either straight spiral flutes Since flutes twist drill similar spiral reamer can ream twist drill provided remove few thousandths inch Whether use reamer twist drill hand turn tool direction both going hole coming back out Dont try enlarge hole diameter 1/sd inch Theres lot cutting edge work good tools expensiveand brittle because theyre hard Use lubricant reaming metal drilling reaming deep holes remember chips will fill clog flutes Withdraw reamer twist drill hole clear flutes prevent 4000 different22000 3-view drawings color FOTOPAAkS Including kO-FAN Antiques Military Civilian Helicopters Sailpianes Catalog/Guide $500Ovum. $1000 THE LEADER IN COMPETITION NEW DIA 15 16 NEW PRO SERIES 3 9 TI NEW HIGH TECH AIRFOIL SECTION 10T020% INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCH 53/34 634 72B33/,456 8334568 84566/7 9456677/ 104586/7 106W8W i136EW II5W 116EW 1167 124W 125W 1258 1356 1456 1556 164N 16678 RC PYLON RACING SERIES 500 DIA PITCH 7 5N5/N SERIES 400C 866/777/ 9777 W WIDE BLADE EW EXTRA WIDE N NARROW October 1993 103 PROPELLERS 4 ES 100 THP DESIGN TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALLTHE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP 66Vz 77 8 677 8 677/,8 67 678 Model Airplane Design Performance AILERON ELEVATOR Modeler RUDDEI book must model airplane builder flyers library covers model airplane design performance modeler mind Instead complicated mathematics 280 ROLL pages numerous illustrations examples used Topics arranged sequence leads illustrated AILERON example design radio control model airplane PITCH zy Toll Free Orders MC VISA & AMEX 1-800-364-BOOK Check orM 0 Challenge Engineering Inc PO Box 67 New Baden TX 77870 TX residents add tax -- US currency Early Developments Terminology Aerodynamics Stability Control Performance Design Author Chevalierprofessor emeritus aeros p ace engineer ing 50 years model building flying AMA 7503 designer several RPVs consultant RPV manufac turers NASA research scientist professional engineer commercial pilot $2495 shinnin2 handina jamming breaking tool Drilling thin metal another thing altogether Well define thin metal anything thinner half diameter drill Difficulty arises because drill removes its own central pivot bearing before cutting lips flutes have penetrated far enough metal supported cylindrical portion hole lips hooks metal other drill deflects wobbles work piece drill bends breaks lucky produces star- keyhole-shaped hole surrounded burrs Again can prevent problem making sure piece solidly backed scrap will hold drill point centered until flutes have penetrated metal scrap may clamped tack soldered secured cyanoacrylate CyA glue holds entering drill point position Its best produce holes thin sheet metal punching first enlarging reaming fretsawing nibbling nibbler small punch-and-die mounted plierlike handles Insert punch-and-die through hole punch metal away bit bit Bernz torch people used sell nibbler less $10 may still available Drills come sets Most commonly seen jobbers drill set graduated i/Mdiameter steps Another type coded whole numbersone through 80 usually sold two groupsone through 60 61 through 80 Letter-coded drill sets through Z metric sets also available Neither number nor letter-coded sets uniformly graduated Modelers use fractional number-coded drills almost exclusively reason wide range drill sizes available holes must drilled precisely enough can tapped threaded threads cut some metal must remain hole example 2-56 screw will slip #40086diameterdrill hole thread hole tap #50 hole 0070-inch-diameter should drilled Dont buy inexpensive drill sets look good-quality set first youll see difference should have set jobbers drills fractional ranging i/I6 inch through 1/64-inch increments Good-quality drills available carbon steel high-speed steel latter useful mainly machine shops drilling stainless steel theyre much expensive set jewelers broaches can find useful inexpensive jewelers broach tapered much like needle since ground five-sided cross-section has five sharp edges can make disk hole cutter thin sheet balsa sharpening piece tubing end Cutting done rotating punching cutting edge should toothed rather being razor sharp Either brass aluminum tubing can used nick end old razor blade make lot little teeth Now weve learned make neat holes its time consider what put Lets begin screws youre going use screws holes should threaded As noted earlier threading done taps Taps hard steel screws flutes create cutting edges thread teeth accept chips produced cutting tap size theres specific corresponding drill size Using right size drill will ensure enough metal remains hole threading Screw tap hole rotate back forth prevent jamming breaking Remove tap entirely hole clear chips Use lubricant except working brass cast iron kinds small screws washers nuts now available size fasteners used can reduced dimensions approximately scale Small fasteners made use instruments other compact devices like REALISTIC MOTION CONTROL VALVES valves feature exhaust speed control UP1 Independant speed control & switching struts $2895 UP2Strut & door control Mustangs Door opens Strut lowers door closes Door opens strut raises door closes $7465 UP3 Strut & door control valve P47 Door opens-strut lowers-door stays openStrut raisesdoor closes$7465 Door Cylinders metal 5/16 bore1 & 15 inch stroke $1900 6 inch diameter scale Mustang wheels Machined bar stock-8 spoke hub bronze bearings solid foam tire weight 10 oz $11500 pair Dealer inquiries welcome RENO UNLIMITED MUSTANG RETRACTS rating jiII Totally enclosed IIIImechanism I4H-all metal 1 inch air cylinder 85degree retraction Fits between ribs$57900 including UP2 valve ULTRA PRECISION Technical Services Ltd 1244 Honeysuckle Crescent Oakville OntarioL6H 2S8 Canada Phone 416842 1703 prices US funds Shipping valves & cylinders $450 104 Model Aviation AN% ThE MOV HoWARDucXEVAIJpA RI GAIN CONTROL ng control can nightmare wrong response given command can take its toll model nerves walletl Radio South know feel about hobby too avid RO enthusiasts nearly half century combined experience modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical in-house radio service can depend Radio South customer satisfaction isnt just motto Its way life Let us put back control Futaba K1AFT CN jAIAThONICS 5524 N Palafox Pensacola FL 32503 repair information 904 434-0909 1-800-962-7802 Toll Free Order Line lOrders Only Pleasell eyeglasses usually have two small screws attach earpieces lens frame common size 00-90 045 diameter screw surprisingly inexpensive corresponding tap costs about dollar Unfortunately die put threads rod costs considerably Happily Sig Manufacturing Co has restored small fasteners its catalog together tap die set 00-90 0-80 1-72 2-56 thread sizes Youll also need correct drills taps 60 /64 53 50 48 43 collection will cost about 40 bucks will last years Another possible source model railroad dealer small screws come several head styleshex flat round etcand look particularly attractive Scale models also surprisingly strong wood balsa trick harden wood thin variety CyA glue Drill wood undersize tap drill apply glue inside hole glue has thoroughly cured redrill tap drill size Treat hole glue again redrill tap metal hole Youll surprised strong positive fastener becomes caution absolutely certain glue has cured youll end up permanently installing drill tap Round stock Modelers frequently need round wood represent such items steel tubing pipes Although dowels hobby shop often work satisfactorily regularly find ourselves trying sand scrape piece square stock round stock Unfortunately round stock often turns out visibly not-round Another reason making own round stock hobby shop dowels often made intentionally oversize use drive fits furniture joints among other things unusual buy piece /s dowel fit inside piece 5A2 OD tubing find dowel wont fit through tube Dowels once made driving wooden sticks through successively smaller sharp-edged holes hardened steel plates may still made way such dowel plates hard find would too expensive too large purposes can however imitate technique using holes drill gauges make sticks smaller convert square round Put point stick select drill-gauge hole will just take off corners square stock barely resist round stock Push tap stick through hole Progress hole next making several passes through necessary Drill gauges come both jobbers numbered sizes Jobbers sizes range Y16 inch through ri inch Al-inch increments Numbered sizes range No 1 0228 inch through No 60 040 inch 60 steps purchased gauges Sears 1980 $429 about 2 inches six inches made hardened 1/is steel sheet Theyre handy conventional role addition special use described above have Everything need know fashion well-made hole size location suits purpose cale/Troy Continued page 68 display WRAM show New York last winter thousands treated full view fine Storch features numerous operating appointments including flaps latching cabin door bomb release landing light trim tabs accurate telescoping landing gear model uses Futaba 7 UAF eight servos SR 1400 mAb batteries inverted OS 91 two-stroke engine spans 93 inches weighs 14 pounds Robs Fieseler Storch FI-156 C-3/Trop risk engines performance anything less True AAC ABC piston/cylinder assemblies Now available over 25 different types popular engines choice professional modelers worldwide Send $200 1993 catalog Performance Specialties ox 3146 nerville NV 89410 Phone 702 265-7523 FAX 702 265-7522 October 1993 105 ne
Edition: Model Aviation - 1993/10
Page Numbers: 94, 95, 103, 104, 105
A modelers guide selection use proper tools important construction step H Ned Kragness Building model exercise cutting shaping bits pieces assembled final product assemble model properly builders spend lot time energy making holes technique making holes varies according size shape hole material being cut Modelers must learn cut specific holes specific materials Regardless shape hole begin drilling aperture basically round large irregularly shaped cutout what youre after should still draw initial hole basically round pass jigsaw blade file through work size shape inside however want hole smoothly cut precisely located sized few extra steps should become automatic too often want -inch hole reach inch jobbers drill Dont Good holesare produced starting smallat least smaller desired dimension Youll understand read further accurately locate hole draw scribe centerlines extend beyond edges desired hole make punchmark cross locator lines will remain after punchmark gone will help positioning drill start hole Holes drilled metal usually have smooth inner walls fairly clean edges Wood fibers other hand tend tear rather cut cleanly Therefore holes drilled wood will rough splinters splits Splintering worst drill has exited because feed pressure pushes last weak unsupported fibers out place before cutting edges have chance work splintering exit point can prevented placing piece scrap wood snugly against underside surface being drilled drill point enters scrap fibers around center cannot bend break cut neatly Wood-grain fibers tend deflect drill off course drill follows path between strongest fibers hole drifts another reason drilling undersize example intended -inch hole made 3A6jobbers fractional drill drifting discovered can correct error using small round file enlarge hole toward its intended location before redrilling small round files whether rat-tail round bastard type generally taper slightly can used tapered reamers twist drill will come handy understand what twist drill canand cantdo lets examine closely First notice twist drill lacks true point Instead has small chisel tip edge crosswise drillor dead center chisel tip must forced piece being worked drill may wander skate chisel will scrape surface Twist drills dont have true points Instead have chisel tips edges crosswise drill 94 Model Aviation ls gauges reamers Note bent bit foreground cheap drill set Dont waste money get what pay Dead Center Thats its important make center-punch depression should large enough admit entire chisel cutting lips can begin work drill held punch crater material too fragile withstand heavy punch stroke make light Use smaller drill begin enlarging opening until its ready accept larger drill dead center Remember smaller drills have smaller chisels cutting lips drill almost invariably unequal length youve ever sharpened drill understand limits precision Drill sharpening never exact drills always makes holes larger nominal size longer lip P-30 CLASS FREE FLIGHT MODEL KIT $ 3395 POSTPAID $7 wHa1P3O BY JOHN ODWYER WINNING SINCE 1982 REDI-CUT RIBS PREFORMED TUBE MFG BY MODEL AIRCRAFT LABS 108 S LEE STREET IRVING TEXAS 75060 sweeps through greater diameter feed pressure actually bends drill forcing lip make heavier cut again sweeping through larger circle Precision holes can still made however trick drill few thousandths inch undersize ream achieve final diameter Reamers make cuts side walls hole straight flutes usually given very small taper entry end can enter undersized drill hole gradually Continued page 103 MIC LEcTRIC MICRO-JET Ducted-Fan Syatem Package EntIre module weighs lust 28 grams AAAA ounce thrust Files models 6050 sq up Ic 3 oz OOI System Pecicege Includes motor 3x 5OmAh MCd battery wiflog hemeas charger pads 14AAKA end complete Instructions build fan module MICRO-JET System Package $1995 Ptoce 4dS25Opu5/h~dh,g oyruuI p sex iiau O@inSin@me NC 27532 eeeeeeeseeeeeeeeeeeeaeeeee CC GOODIES 2828 Cochran St Suite 281805 581-5061 Simi Valley Ca 93065 aC LACCESSORIES93 Ca SPAN NOW IN 36 & 72LENGTHS CC e LITESPAN LIGHTESTC C IRON-ON COVERING FOF L AIRCRAFT TO 6O SPAN USES BALSALOC ADHESIVE FUEL PROOFC PAINTABL TOUGH! C 9 COLORS AVAILABLE ELLOW WHITE UIIANULuLUL SILVER CREAM & DARK GREEN EASY TO APPLY WORKS COMPOUND CURVES WELL LY NON-TOXIC BALSALOC ADHESIVE TO e FRAME WITH SMALL DAMP SPONGE ALLOW C C TO DRYTHEN AFFIX LITESPAN WITH IRON INK WITH IRON OR HEAT GUN 20 x 36 e e SHEETS SPEC $280 20 x 72 SPEC $560 e 110 GRAM BALSALOC REG $450 SPEC$360 S&HTO7SHTS 20X360R45HT520X72 C LITESPAN LSALOC $325 S & H TO C LE THIS QUANTITY $550 AYLOR POWER PACER CC e I-IALID TC liNED e GREAT AIRPLAN & CYCLES TX & RX R CHARG ERIESSHOWSwet C BATTERY CAPACITY INING WARNS OF BAD CELLS IN PACK e BEFORE ATTEMPTING TO FLY AIRCRAFT C IL $8995 SPEC $7995 SHIP INOL e ALL ITEMS ADD LOCAL SALES TAX IN CA CATALOG $100 USA $300 FOREIGN PRICES ARE CASH S6kMORE 20% DEPOSIT-COD eeeee eC e C C CC esecee CCC CCCC Bandits 1 OClock October 1993 95 Tap-and-die set 00-90 0-80 1-72 2-56 Sets available number sources -o r-u aIIu Nuw r-lu uursair ridiie iou will have much fun building s 3-6 year old will have Flyingit Kit includes full-sized patterns complete Instructions color ohoto list of made oa $400 P & h vii Res add 6% sales sax Specify plan wanled Flight Line Toys PO Box 3484 Sorinofield MO 65808 type building requires ability Cut obvious outside fine cuts inside cuts lighten parts requires jigsaw detachable blade can feed through hole make cut repeat procedure Dremel saw did conveniently blade Dremel has pin end tension blade As searched scroll/jigsaw big price range attendant quality considered mid-range modela Delta cost approximately $600 Aside high price blade attached collar undone redone inside cuL didnt really seem practical bought Searss top-of-the-line unit sturdy machine bushed pivot points saw arms Ive using three years would rate satisfactory Id also have say doesnt cut better original Dremel Considering infrequently use saw couldnt justify top-of-the line suggest watching Sunday ads find tools right price although recommend get Dremel stick thing jigsaw couldnt cut blocks well could cut smaller blocks though throat capability jigsaws lI4 two inches really wont cut muchand cuts clean dont handle big blocks well makes doing fuselage led think band saw would everything wanted Again make some choices Did want quality piece what size what price etc just couldnt justify $400 $500 good 14-inch band saw considering its annual use Sorry its habit too years cost/benefit analysis Fortunately about time visiting John Hill small 10inch band saw made Ohio Forge explained Ohio Forge house brand made Taiwan imported Home Depot Texas area bet its same other companies importing under brand names big difference price bought just under $100 its still available CatalogsThe Best Scale Best Scale$400 ASP Model aircraft Plans Handbook$500 ASP Scale Drawing Plans Book$500 RC Model World Const Guide$600 VTH German Plans Book$600 dd dd SLUG PM. je -5 d6I Call 909 6853959 credit cord IJNGMEISTER UCKER 133 V1 iM SCALE 65 SPAN 90-120 ENGINES PLAI4S 53390 P Al ILUUO- MASTERS MAD WINY OThERS Job Holman Box 741 San Berdo CA 92402. price Look around Ive really liked first time used cuts balsa plywood like butterand straight too Top blocks snap Fitting cowls also easy short does what its supposed course has its drawbacks exceptional buy price however because uses three wheels constant flexing blade increases chance breakage weld especially true use prolonged continuous Setting up properly also takes little getting used also neat new table-size unit Delta would recommend Its 71/2-inch two-wheel tabletop band saw priced approximately $180 available looking would have bought Its about same size has same cutting capacity 10-inch Old Forge band saw two wheels instead three blade breakage less likely Check out slKragness Continued page 95 begin heaviest cutting Since flute made entirely cutting metal cut must shallow enough prevent twisting forces increasing point break tool Reamers available either straight spiral flutes Since flutes twist drill similar spiral reamer can ream twist drill provided remove few thousandths inch Whether use reamer twist drill hand turn tool direction both going hole coming back out Dont try enlarge hole diameter 1/sd inch Theres lot cutting edge work good tools expensiveand brittle because theyre hard Use lubricant reaming metal drilling reaming deep holes remember chips will fill clog flutes Withdraw reamer twist drill hole clear flutes prevent 4000 different22000 3-view drawings color FOTOPAAkS Including kO-FAN Antiques Military Civilian Helicopters Sailpianes Catalog/Guide $500Ovum. $1000 THE LEADER IN COMPETITION NEW DIA 15 16 NEW PRO SERIES 3 9 TI NEW HIGH TECH AIRFOIL SECTION 10T020% INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCH 53/34 634 72B33/,456 8334568 84566/7 9456677/ 104586/7 106W8W i136EW II5W 116EW 1167 124W 125W 1258 1356 1456 1556 164N 16678 RC PYLON RACING SERIES 500 DIA PITCH 7 5N5/N SERIES 400C 866/777/ 9777 W WIDE BLADE EW EXTRA WIDE N NARROW October 1993 103 PROPELLERS 4 ES 100 THP DESIGN TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALLTHE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP 66Vz 77 8 677 8 677/,8 67 678 Model Airplane Design Performance AILERON ELEVATOR Modeler RUDDEI book must model airplane builder flyers library covers model airplane design performance modeler mind Instead complicated mathematics 280 ROLL pages numerous illustrations examples used Topics arranged sequence leads illustrated AILERON example design radio control model airplane PITCH zy Toll Free Orders MC VISA & AMEX 1-800-364-BOOK Check orM 0 Challenge Engineering Inc PO Box 67 New Baden TX 77870 TX residents add tax -- US currency Early Developments Terminology Aerodynamics Stability Control Performance Design Author Chevalierprofessor emeritus aeros p ace engineer ing 50 years model building flying AMA 7503 designer several RPVs consultant RPV manufac turers NASA research scientist professional engineer commercial pilot $2495 shinnin2 handina jamming breaking tool Drilling thin metal another thing altogether Well define thin metal anything thinner half diameter drill Difficulty arises because drill removes its own central pivot bearing before cutting lips flutes have penetrated far enough metal supported cylindrical portion hole lips hooks metal other drill deflects wobbles work piece drill bends breaks lucky produces star- keyhole-shaped hole surrounded burrs Again can prevent problem making sure piece solidly backed scrap will hold drill point centered until flutes have penetrated metal scrap may clamped tack soldered secured cyanoacrylate CyA glue holds entering drill point position Its best produce holes thin sheet metal punching first enlarging reaming fretsawing nibbling nibbler small punch-and-die mounted plierlike handles Insert punch-and-die through hole punch metal away bit bit Bernz torch people used sell nibbler less $10 may still available Drills come sets Most commonly seen jobbers drill set graduated i/Mdiameter steps Another type coded whole numbersone through 80 usually sold two groupsone through 60 61 through 80 Letter-coded drill sets through Z metric sets also available Neither number nor letter-coded sets uniformly graduated Modelers use fractional number-coded drills almost exclusively reason wide range drill sizes available holes must drilled precisely enough can tapped threaded threads cut some metal must remain hole example 2-56 screw will slip #40086diameterdrill hole thread hole tap #50 hole 0070-inch-diameter should drilled Dont buy inexpensive drill sets look good-quality set first youll see difference should have set jobbers drills fractional ranging i/I6 inch through 1/64-inch increments Good-quality drills available carbon steel high-speed steel latter useful mainly machine shops drilling stainless steel theyre much expensive set jewelers broaches can find useful inexpensive jewelers broach tapered much like needle since ground five-sided cross-section has five sharp edges can make disk hole cutter thin sheet balsa sharpening piece tubing end Cutting done rotating punching cutting edge should toothed rather being razor sharp Either brass aluminum tubing can used nick end old razor blade make lot little teeth Now weve learned make neat holes its time consider what put Lets begin screws youre going use screws holes should threaded As noted earlier threading done taps Taps hard steel screws flutes create cutting edges thread teeth accept chips produced cutting tap size theres specific corresponding drill size Using right size drill will ensure enough metal remains hole threading Screw tap hole rotate back forth prevent jamming breaking Remove tap entirely hole clear chips Use lubricant except working brass cast iron kinds small screws washers nuts now available size fasteners used can reduced dimensions approximately scale Small fasteners made use instruments other compact devices like REALISTIC MOTION CONTROL VALVES valves feature exhaust speed control UP1 Independant speed control & switching struts $2895 UP2Strut & door control Mustangs Door opens Strut lowers door closes Door opens strut raises door closes $7465 UP3 Strut & door control valve P47 Door opens-strut lowers-door stays openStrut raisesdoor closes$7465 Door Cylinders metal 5/16 bore1 & 15 inch stroke $1900 6 inch diameter scale Mustang wheels Machined bar stock-8 spoke hub bronze bearings solid foam tire weight 10 oz $11500 pair Dealer inquiries welcome RENO UNLIMITED MUSTANG RETRACTS rating jiII Totally enclosed IIIImechanism I4H-all metal 1 inch air cylinder 85degree retraction Fits between ribs$57900 including UP2 valve ULTRA PRECISION Technical Services Ltd 1244 Honeysuckle Crescent Oakville OntarioL6H 2S8 Canada Phone 416842 1703 prices US funds Shipping valves & cylinders $450 104 Model Aviation AN% ThE MOV HoWARDucXEVAIJpA RI GAIN CONTROL ng control can nightmare wrong response given command can take its toll model nerves walletl Radio South know feel about hobby too avid RO enthusiasts nearly half century combined experience modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical in-house radio service can depend Radio South customer satisfaction isnt just motto Its way life Let us put back control Futaba K1AFT CN jAIAThONICS 5524 N Palafox Pensacola FL 32503 repair information 904 434-0909 1-800-962-7802 Toll Free Order Line lOrders Only Pleasell eyeglasses usually have two small screws attach earpieces lens frame common size 00-90 045 diameter screw surprisingly inexpensive corresponding tap costs about dollar Unfortunately die put threads rod costs considerably Happily Sig Manufacturing Co has restored small fasteners its catalog together tap die set 00-90 0-80 1-72 2-56 thread sizes Youll also need correct drills taps 60 /64 53 50 48 43 collection will cost about 40 bucks will last years Another possible source model railroad dealer small screws come several head styleshex flat round etcand look particularly attractive Scale models also surprisingly strong wood balsa trick harden wood thin variety CyA glue Drill wood undersize tap drill apply glue inside hole glue has thoroughly cured redrill tap drill size Treat hole glue again redrill tap metal hole Youll surprised strong positive fastener becomes caution absolutely certain glue has cured youll end up permanently installing drill tap Round stock Modelers frequently need round wood represent such items steel tubing pipes Although dowels hobby shop often work satisfactorily regularly find ourselves trying sand scrape piece square stock round stock Unfortunately round stock often turns out visibly not-round Another reason making own round stock hobby shop dowels often made intentionally oversize use drive fits furniture joints among other things unusual buy piece /s dowel fit inside piece 5A2 OD tubing find dowel wont fit through tube Dowels once made driving wooden sticks through successively smaller sharp-edged holes hardened steel plates may still made way such dowel plates hard find would too expensive too large purposes can however imitate technique using holes drill gauges make sticks smaller convert square round Put point stick select drill-gauge hole will just take off corners square stock barely resist round stock Push tap stick through hole Progress hole next making several passes through necessary Drill gauges come both jobbers numbered sizes Jobbers sizes range Y16 inch through ri inch Al-inch increments Numbered sizes range No 1 0228 inch through No 60 040 inch 60 steps purchased gauges Sears 1980 $429 about 2 inches six inches made hardened 1/is steel sheet Theyre handy conventional role addition special use described above have Everything need know fashion well-made hole size location suits purpose cale/Troy Continued page 68 display WRAM show New York last winter thousands treated full view fine Storch features numerous operating appointments including flaps latching cabin door bomb release landing light trim tabs accurate telescoping landing gear model uses Futaba 7 UAF eight servos SR 1400 mAb batteries inverted OS 91 two-stroke engine spans 93 inches weighs 14 pounds Robs Fieseler Storch FI-156 C-3/Trop risk engines performance anything less True AAC ABC piston/cylinder assemblies Now available over 25 different types popular engines choice professional modelers worldwide Send $200 1993 catalog Performance Specialties ox 3146 nerville NV 89410 Phone 702 265-7523 FAX 702 265-7522 October 1993 105 ne
Edition: Model Aviation - 1993/10
Page Numbers: 94, 95, 103, 104, 105
A modelers guide selection use proper tools important construction step H Ned Kragness Building model exercise cutting shaping bits pieces assembled final product assemble model properly builders spend lot time energy making holes technique making holes varies according size shape hole material being cut Modelers must learn cut specific holes specific materials Regardless shape hole begin drilling aperture basically round large irregularly shaped cutout what youre after should still draw initial hole basically round pass jigsaw blade file through work size shape inside however want hole smoothly cut precisely located sized few extra steps should become automatic too often want -inch hole reach inch jobbers drill Dont Good holesare produced starting smallat least smaller desired dimension Youll understand read further accurately locate hole draw scribe centerlines extend beyond edges desired hole make punchmark cross locator lines will remain after punchmark gone will help positioning drill start hole Holes drilled metal usually have smooth inner walls fairly clean edges Wood fibers other hand tend tear rather cut cleanly Therefore holes drilled wood will rough splinters splits Splintering worst drill has exited because feed pressure pushes last weak unsupported fibers out place before cutting edges have chance work splintering exit point can prevented placing piece scrap wood snugly against underside surface being drilled drill point enters scrap fibers around center cannot bend break cut neatly Wood-grain fibers tend deflect drill off course drill follows path between strongest fibers hole drifts another reason drilling undersize example intended -inch hole made 3A6jobbers fractional drill drifting discovered can correct error using small round file enlarge hole toward its intended location before redrilling small round files whether rat-tail round bastard type generally taper slightly can used tapered reamers twist drill will come handy understand what twist drill canand cantdo lets examine closely First notice twist drill lacks true point Instead has small chisel tip edge crosswise drillor dead center chisel tip must forced piece being worked drill may wander skate chisel will scrape surface Twist drills dont have true points Instead have chisel tips edges crosswise drill 94 Model Aviation ls gauges reamers Note bent bit foreground cheap drill set Dont waste money get what pay Dead Center Thats its important make center-punch depression should large enough admit entire chisel cutting lips can begin work drill held punch crater material too fragile withstand heavy punch stroke make light Use smaller drill begin enlarging opening until its ready accept larger drill dead center Remember smaller drills have smaller chisels cutting lips drill almost invariably unequal length youve ever sharpened drill understand limits precision Drill sharpening never exact drills always makes holes larger nominal size longer lip P-30 CLASS FREE FLIGHT MODEL KIT $ 3395 POSTPAID $7 wHa1P3O BY JOHN ODWYER WINNING SINCE 1982 REDI-CUT RIBS PREFORMED TUBE MFG BY MODEL AIRCRAFT LABS 108 S LEE STREET IRVING TEXAS 75060 sweeps through greater diameter feed pressure actually bends drill forcing lip make heavier cut again sweeping through larger circle Precision holes can still made however trick drill few thousandths inch undersize ream achieve final diameter Reamers make cuts side walls hole straight flutes usually given very small taper entry end can enter undersized drill hole gradually Continued page 103 MIC LEcTRIC MICRO-JET Ducted-Fan Syatem Package EntIre module weighs lust 28 grams AAAA ounce thrust Files models 6050 sq up Ic 3 oz OOI System Pecicege Includes motor 3x 5OmAh MCd battery wiflog hemeas charger pads 14AAKA end complete Instructions build fan module MICRO-JET System Package $1995 Ptoce 4dS25Opu5/h~dh,g oyruuI p sex iiau O@inSin@me NC 27532 eeeeeeeseeeeeeeeeeeeaeeeee CC GOODIES 2828 Cochran St Suite 281805 581-5061 Simi Valley Ca 93065 aC LACCESSORIES93 Ca SPAN NOW IN 36 & 72LENGTHS CC e LITESPAN LIGHTESTC C IRON-ON COVERING FOF L AIRCRAFT TO 6O SPAN USES BALSALOC ADHESIVE FUEL PROOFC PAINTABL TOUGH! C 9 COLORS AVAILABLE ELLOW WHITE UIIANULuLUL SILVER CREAM & DARK GREEN EASY TO APPLY WORKS COMPOUND CURVES WELL LY NON-TOXIC BALSALOC ADHESIVE TO e FRAME WITH SMALL DAMP SPONGE ALLOW C C TO DRYTHEN AFFIX LITESPAN WITH IRON INK WITH IRON OR HEAT GUN 20 x 36 e e SHEETS SPEC $280 20 x 72 SPEC $560 e 110 GRAM BALSALOC REG $450 SPEC$360 S&HTO7SHTS 20X360R45HT520X72 C LITESPAN LSALOC $325 S & H TO C LE THIS QUANTITY $550 AYLOR POWER PACER CC e I-IALID TC liNED e GREAT AIRPLAN & CYCLES TX & RX R CHARG ERIESSHOWSwet C BATTERY CAPACITY INING WARNS OF BAD CELLS IN PACK e BEFORE ATTEMPTING TO FLY AIRCRAFT C IL $8995 SPEC $7995 SHIP INOL e ALL ITEMS ADD LOCAL SALES TAX IN CA CATALOG $100 USA $300 FOREIGN PRICES ARE CASH S6kMORE 20% DEPOSIT-COD eeeee eC e C C CC esecee CCC CCCC Bandits 1 OClock October 1993 95 Tap-and-die set 00-90 0-80 1-72 2-56 Sets available number sources -o r-u aIIu Nuw r-lu uursair ridiie iou will have much fun building s 3-6 year old will have Flyingit Kit includes full-sized patterns complete Instructions color ohoto list of made oa $400 P & h vii Res add 6% sales sax Specify plan wanled Flight Line Toys PO Box 3484 Sorinofield MO 65808 type building requires ability Cut obvious outside fine cuts inside cuts lighten parts requires jigsaw detachable blade can feed through hole make cut repeat procedure Dremel saw did conveniently blade Dremel has pin end tension blade As searched scroll/jigsaw big price range attendant quality considered mid-range modela Delta cost approximately $600 Aside high price blade attached collar undone redone inside cuL didnt really seem practical bought Searss top-of-the-line unit sturdy machine bushed pivot points saw arms Ive using three years would rate satisfactory Id also have say doesnt cut better original Dremel Considering infrequently use saw couldnt justify top-of-the line suggest watching Sunday ads find tools right price although recommend get Dremel stick thing jigsaw couldnt cut blocks well could cut smaller blocks though throat capability jigsaws lI4 two inches really wont cut muchand cuts clean dont handle big blocks well makes doing fuselage led think band saw would everything wanted Again make some choices Did want quality piece what size what price etc just couldnt justify $400 $500 good 14-inch band saw considering its annual use Sorry its habit too years cost/benefit analysis Fortunately about time visiting John Hill small 10inch band saw made Ohio Forge explained Ohio Forge house brand made Taiwan imported Home Depot Texas area bet its same other companies importing under brand names big difference price bought just under $100 its still available CatalogsThe Best Scale Best Scale$400 ASP Model aircraft Plans Handbook$500 ASP Scale Drawing Plans Book$500 RC Model World Const Guide$600 VTH German Plans Book$600 dd dd SLUG PM. je -5 d6I Call 909 6853959 credit cord IJNGMEISTER UCKER 133 V1 iM SCALE 65 SPAN 90-120 ENGINES PLAI4S 53390 P Al ILUUO- MASTERS MAD WINY OThERS Job Holman Box 741 San Berdo CA 92402. price Look around Ive really liked first time used cuts balsa plywood like butterand straight too Top blocks snap Fitting cowls also easy short does what its supposed course has its drawbacks exceptional buy price however because uses three wheels constant flexing blade increases chance breakage weld especially true use prolonged continuous Setting up properly also takes little getting used also neat new table-size unit Delta would recommend Its 71/2-inch two-wheel tabletop band saw priced approximately $180 available looking would have bought Its about same size has same cutting capacity 10-inch Old Forge band saw two wheels instead three blade breakage less likely Check out slKragness Continued page 95 begin heaviest cutting Since flute made entirely cutting metal cut must shallow enough prevent twisting forces increasing point break tool Reamers available either straight spiral flutes Since flutes twist drill similar spiral reamer can ream twist drill provided remove few thousandths inch Whether use reamer twist drill hand turn tool direction both going hole coming back out Dont try enlarge hole diameter 1/sd inch Theres lot cutting edge work good tools expensiveand brittle because theyre hard Use lubricant reaming metal drilling reaming deep holes remember chips will fill clog flutes Withdraw reamer twist drill hole clear flutes prevent 4000 different22000 3-view drawings color FOTOPAAkS Including kO-FAN Antiques Military Civilian Helicopters Sailpianes Catalog/Guide $500Ovum. $1000 THE LEADER IN COMPETITION NEW DIA 15 16 NEW PRO SERIES 3 9 TI NEW HIGH TECH AIRFOIL SECTION 10T020% INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCH 53/34 634 72B33/,456 8334568 84566/7 9456677/ 104586/7 106W8W i136EW II5W 116EW 1167 124W 125W 1258 1356 1456 1556 164N 16678 RC PYLON RACING SERIES 500 DIA PITCH 7 5N5/N SERIES 400C 866/777/ 9777 W WIDE BLADE EW EXTRA WIDE N NARROW October 1993 103 PROPELLERS 4 ES 100 THP DESIGN TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALLTHE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP 66Vz 77 8 677 8 677/,8 67 678 Model Airplane Design Performance AILERON ELEVATOR Modeler RUDDEI book must model airplane builder flyers library covers model airplane design performance modeler mind Instead complicated mathematics 280 ROLL pages numerous illustrations examples used Topics arranged sequence leads illustrated AILERON example design radio control model airplane PITCH zy Toll Free Orders MC VISA & AMEX 1-800-364-BOOK Check orM 0 Challenge Engineering Inc PO Box 67 New Baden TX 77870 TX residents add tax -- US currency Early Developments Terminology Aerodynamics Stability Control Performance Design Author Chevalierprofessor emeritus aeros p ace engineer ing 50 years model building flying AMA 7503 designer several RPVs consultant RPV manufac turers NASA research scientist professional engineer commercial pilot $2495 shinnin2 handina jamming breaking tool Drilling thin metal another thing altogether Well define thin metal anything thinner half diameter drill Difficulty arises because drill removes its own central pivot bearing before cutting lips flutes have penetrated far enough metal supported cylindrical portion hole lips hooks metal other drill deflects wobbles work piece drill bends breaks lucky produces star- keyhole-shaped hole surrounded burrs Again can prevent problem making sure piece solidly backed scrap will hold drill point centered until flutes have penetrated metal scrap may clamped tack soldered secured cyanoacrylate CyA glue holds entering drill point position Its best produce holes thin sheet metal punching first enlarging reaming fretsawing nibbling nibbler small punch-and-die mounted plierlike handles Insert punch-and-die through hole punch metal away bit bit Bernz torch people used sell nibbler less $10 may still available Drills come sets Most commonly seen jobbers drill set graduated i/Mdiameter steps Another type coded whole numbersone through 80 usually sold two groupsone through 60 61 through 80 Letter-coded drill sets through Z metric sets also available Neither number nor letter-coded sets uniformly graduated Modelers use fractional number-coded drills almost exclusively reason wide range drill sizes available holes must drilled precisely enough can tapped threaded threads cut some metal must remain hole example 2-56 screw will slip #40086diameterdrill hole thread hole tap #50 hole 0070-inch-diameter should drilled Dont buy inexpensive drill sets look good-quality set first youll see difference should have set jobbers drills fractional ranging i/I6 inch through 1/64-inch increments Good-quality drills available carbon steel high-speed steel latter useful mainly machine shops drilling stainless steel theyre much expensive set jewelers broaches can find useful inexpensive jewelers broach tapered much like needle since ground five-sided cross-section has five sharp edges can make disk hole cutter thin sheet balsa sharpening piece tubing end Cutting done rotating punching cutting edge should toothed rather being razor sharp Either brass aluminum tubing can used nick end old razor blade make lot little teeth Now weve learned make neat holes its time consider what put Lets begin screws youre going use screws holes should threaded As noted earlier threading done taps Taps hard steel screws flutes create cutting edges thread teeth accept chips produced cutting tap size theres specific corresponding drill size Using right size drill will ensure enough metal remains hole threading Screw tap hole rotate back forth prevent jamming breaking Remove tap entirely hole clear chips Use lubricant except working brass cast iron kinds small screws washers nuts now available size fasteners used can reduced dimensions approximately scale Small fasteners made use instruments other compact devices like REALISTIC MOTION CONTROL VALVES valves feature exhaust speed control UP1 Independant speed control & switching struts $2895 UP2Strut & door control Mustangs Door opens Strut lowers door closes Door opens strut raises door closes $7465 UP3 Strut & door control valve P47 Door opens-strut lowers-door stays openStrut raisesdoor closes$7465 Door Cylinders metal 5/16 bore1 & 15 inch stroke $1900 6 inch diameter scale Mustang wheels Machined bar stock-8 spoke hub bronze bearings solid foam tire weight 10 oz $11500 pair Dealer inquiries welcome RENO UNLIMITED MUSTANG RETRACTS rating jiII Totally enclosed IIIImechanism I4H-all metal 1 inch air cylinder 85degree retraction Fits between ribs$57900 including UP2 valve ULTRA PRECISION Technical Services Ltd 1244 Honeysuckle Crescent Oakville OntarioL6H 2S8 Canada Phone 416842 1703 prices US funds Shipping valves & cylinders $450 104 Model Aviation AN% ThE MOV HoWARDucXEVAIJpA RI GAIN CONTROL ng control can nightmare wrong response given command can take its toll model nerves walletl Radio South know feel about hobby too avid RO enthusiasts nearly half century combined experience modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical in-house radio service can depend Radio South customer satisfaction isnt just motto Its way life Let us put back control Futaba K1AFT CN jAIAThONICS 5524 N Palafox Pensacola FL 32503 repair information 904 434-0909 1-800-962-7802 Toll Free Order Line lOrders Only Pleasell eyeglasses usually have two small screws attach earpieces lens frame common size 00-90 045 diameter screw surprisingly inexpensive corresponding tap costs about dollar Unfortunately die put threads rod costs considerably Happily Sig Manufacturing Co has restored small fasteners its catalog together tap die set 00-90 0-80 1-72 2-56 thread sizes Youll also need correct drills taps 60 /64 53 50 48 43 collection will cost about 40 bucks will last years Another possible source model railroad dealer small screws come several head styleshex flat round etcand look particularly attractive Scale models also surprisingly strong wood balsa trick harden wood thin variety CyA glue Drill wood undersize tap drill apply glue inside hole glue has thoroughly cured redrill tap drill size Treat hole glue again redrill tap metal hole Youll surprised strong positive fastener becomes caution absolutely certain glue has cured youll end up permanently installing drill tap Round stock Modelers frequently need round wood represent such items steel tubing pipes Although dowels hobby shop often work satisfactorily regularly find ourselves trying sand scrape piece square stock round stock Unfortunately round stock often turns out visibly not-round Another reason making own round stock hobby shop dowels often made intentionally oversize use drive fits furniture joints among other things unusual buy piece /s dowel fit inside piece 5A2 OD tubing find dowel wont fit through tube Dowels once made driving wooden sticks through successively smaller sharp-edged holes hardened steel plates may still made way such dowel plates hard find would too expensive too large purposes can however imitate technique using holes drill gauges make sticks smaller convert square round Put point stick select drill-gauge hole will just take off corners square stock barely resist round stock Push tap stick through hole Progress hole next making several passes through necessary Drill gauges come both jobbers numbered sizes Jobbers sizes range Y16 inch through ri inch Al-inch increments Numbered sizes range No 1 0228 inch through No 60 040 inch 60 steps purchased gauges Sears 1980 $429 about 2 inches six inches made hardened 1/is steel sheet Theyre handy conventional role addition special use described above have Everything need know fashion well-made hole size location suits purpose cale/Troy Continued page 68 display WRAM show New York last winter thousands treated full view fine Storch features numerous operating appointments including flaps latching cabin door bomb release landing light trim tabs accurate telescoping landing gear model uses Futaba 7 UAF eight servos SR 1400 mAb batteries inverted OS 91 two-stroke engine spans 93 inches weighs 14 pounds Robs Fieseler Storch FI-156 C-3/Trop risk engines performance anything less True AAC ABC piston/cylinder assemblies Now available over 25 different types popular engines choice professional modelers worldwide Send $200 1993 catalog Performance Specialties ox 3146 nerville NV 89410 Phone 702 265-7523 FAX 702 265-7522 October 1993 105 ne
Edition: Model Aviation - 1993/10
Page Numbers: 94, 95, 103, 104, 105
A modelers guide selection use proper tools important construction step H Ned Kragness Building model exercise cutting shaping bits pieces assembled final product assemble model properly builders spend lot time energy making holes technique making holes varies according size shape hole material being cut Modelers must learn cut specific holes specific materials Regardless shape hole begin drilling aperture basically round large irregularly shaped cutout what youre after should still draw initial hole basically round pass jigsaw blade file through work size shape inside however want hole smoothly cut precisely located sized few extra steps should become automatic too often want -inch hole reach inch jobbers drill Dont Good holesare produced starting smallat least smaller desired dimension Youll understand read further accurately locate hole draw scribe centerlines extend beyond edges desired hole make punchmark cross locator lines will remain after punchmark gone will help positioning drill start hole Holes drilled metal usually have smooth inner walls fairly clean edges Wood fibers other hand tend tear rather cut cleanly Therefore holes drilled wood will rough splinters splits Splintering worst drill has exited because feed pressure pushes last weak unsupported fibers out place before cutting edges have chance work splintering exit point can prevented placing piece scrap wood snugly against underside surface being drilled drill point enters scrap fibers around center cannot bend break cut neatly Wood-grain fibers tend deflect drill off course drill follows path between strongest fibers hole drifts another reason drilling undersize example intended -inch hole made 3A6jobbers fractional drill drifting discovered can correct error using small round file enlarge hole toward its intended location before redrilling small round files whether rat-tail round bastard type generally taper slightly can used tapered reamers twist drill will come handy understand what twist drill canand cantdo lets examine closely First notice twist drill lacks true point Instead has small chisel tip edge crosswise drillor dead center chisel tip must forced piece being worked drill may wander skate chisel will scrape surface Twist drills dont have true points Instead have chisel tips edges crosswise drill 94 Model Aviation ls gauges reamers Note bent bit foreground cheap drill set Dont waste money get what pay Dead Center Thats its important make center-punch depression should large enough admit entire chisel cutting lips can begin work drill held punch crater material too fragile withstand heavy punch stroke make light Use smaller drill begin enlarging opening until its ready accept larger drill dead center Remember smaller drills have smaller chisels cutting lips drill almost invariably unequal length youve ever sharpened drill understand limits precision Drill sharpening never exact drills always makes holes larger nominal size longer lip P-30 CLASS FREE FLIGHT MODEL KIT $ 3395 POSTPAID $7 wHa1P3O BY JOHN ODWYER WINNING SINCE 1982 REDI-CUT RIBS PREFORMED TUBE MFG BY MODEL AIRCRAFT LABS 108 S LEE STREET IRVING TEXAS 75060 sweeps through greater diameter feed pressure actually bends drill forcing lip make heavier cut again sweeping through larger circle Precision holes can still made however trick drill few thousandths inch undersize ream achieve final diameter Reamers make cuts side walls hole straight flutes usually given very small taper entry end can enter undersized drill hole gradually Continued page 103 MIC LEcTRIC MICRO-JET Ducted-Fan Syatem Package EntIre module weighs lust 28 grams AAAA ounce thrust Files models 6050 sq up Ic 3 oz OOI System Pecicege Includes motor 3x 5OmAh MCd battery wiflog hemeas charger pads 14AAKA end complete Instructions build fan module MICRO-JET System Package $1995 Ptoce 4dS25Opu5/h~dh,g oyruuI p sex iiau O@inSin@me NC 27532 eeeeeeeseeeeeeeeeeeeaeeeee CC GOODIES 2828 Cochran St Suite 281805 581-5061 Simi Valley Ca 93065 aC LACCESSORIES93 Ca SPAN NOW IN 36 & 72LENGTHS CC e LITESPAN LIGHTESTC C IRON-ON COVERING FOF L AIRCRAFT TO 6O SPAN USES BALSALOC ADHESIVE FUEL PROOFC PAINTABL TOUGH! C 9 COLORS AVAILABLE ELLOW WHITE UIIANULuLUL SILVER CREAM & DARK GREEN EASY TO APPLY WORKS COMPOUND CURVES WELL LY NON-TOXIC BALSALOC ADHESIVE TO e FRAME WITH SMALL DAMP SPONGE ALLOW C C TO DRYTHEN AFFIX LITESPAN WITH IRON INK WITH IRON OR HEAT GUN 20 x 36 e e SHEETS SPEC $280 20 x 72 SPEC $560 e 110 GRAM BALSALOC REG $450 SPEC$360 S&HTO7SHTS 20X360R45HT520X72 C LITESPAN LSALOC $325 S & H TO C LE THIS QUANTITY $550 AYLOR POWER PACER CC e I-IALID TC liNED e GREAT AIRPLAN & CYCLES TX & RX R CHARG ERIESSHOWSwet C BATTERY CAPACITY INING WARNS OF BAD CELLS IN PACK e BEFORE ATTEMPTING TO FLY AIRCRAFT C IL $8995 SPEC $7995 SHIP INOL e ALL ITEMS ADD LOCAL SALES TAX IN CA CATALOG $100 USA $300 FOREIGN PRICES ARE CASH S6kMORE 20% DEPOSIT-COD eeeee eC e C C CC esecee CCC CCCC Bandits 1 OClock October 1993 95 Tap-and-die set 00-90 0-80 1-72 2-56 Sets available number sources -o r-u aIIu Nuw r-lu uursair ridiie iou will have much fun building s 3-6 year old will have Flyingit Kit includes full-sized patterns complete Instructions color ohoto list of made oa $400 P & h vii Res add 6% sales sax Specify plan wanled Flight Line Toys PO Box 3484 Sorinofield MO 65808 type building requires ability Cut obvious outside fine cuts inside cuts lighten parts requires jigsaw detachable blade can feed through hole make cut repeat procedure Dremel saw did conveniently blade Dremel has pin end tension blade As searched scroll/jigsaw big price range attendant quality considered mid-range modela Delta cost approximately $600 Aside high price blade attached collar undone redone inside cuL didnt really seem practical bought Searss top-of-the-line unit sturdy machine bushed pivot points saw arms Ive using three years would rate satisfactory Id also have say doesnt cut better original Dremel Considering infrequently use saw couldnt justify top-of-the line suggest watching Sunday ads find tools right price although recommend get Dremel stick thing jigsaw couldnt cut blocks well could cut smaller blocks though throat capability jigsaws lI4 two inches really wont cut muchand cuts clean dont handle big blocks well makes doing fuselage led think band saw would everything wanted Again make some choices Did want quality piece what size what price etc just couldnt justify $400 $500 good 14-inch band saw considering its annual use Sorry its habit too years cost/benefit analysis Fortunately about time visiting John Hill small 10inch band saw made Ohio Forge explained Ohio Forge house brand made Taiwan imported Home Depot Texas area bet its same other companies importing under brand names big difference price bought just under $100 its still available CatalogsThe Best Scale Best Scale$400 ASP Model aircraft Plans Handbook$500 ASP Scale Drawing Plans Book$500 RC Model World Const Guide$600 VTH German Plans Book$600 dd dd SLUG PM. je -5 d6I Call 909 6853959 credit cord IJNGMEISTER UCKER 133 V1 iM SCALE 65 SPAN 90-120 ENGINES PLAI4S 53390 P Al ILUUO- MASTERS MAD WINY OThERS Job Holman Box 741 San Berdo CA 92402. price Look around Ive really liked first time used cuts balsa plywood like butterand straight too Top blocks snap Fitting cowls also easy short does what its supposed course has its drawbacks exceptional buy price however because uses three wheels constant flexing blade increases chance breakage weld especially true use prolonged continuous Setting up properly also takes little getting used also neat new table-size unit Delta would recommend Its 71/2-inch two-wheel tabletop band saw priced approximately $180 available looking would have bought Its about same size has same cutting capacity 10-inch Old Forge band saw two wheels instead three blade breakage less likely Check out slKragness Continued page 95 begin heaviest cutting Since flute made entirely cutting metal cut must shallow enough prevent twisting forces increasing point break tool Reamers available either straight spiral flutes Since flutes twist drill similar spiral reamer can ream twist drill provided remove few thousandths inch Whether use reamer twist drill hand turn tool direction both going hole coming back out Dont try enlarge hole diameter 1/sd inch Theres lot cutting edge work good tools expensiveand brittle because theyre hard Use lubricant reaming metal drilling reaming deep holes remember chips will fill clog flutes Withdraw reamer twist drill hole clear flutes prevent 4000 different22000 3-view drawings color FOTOPAAkS Including kO-FAN Antiques Military Civilian Helicopters Sailpianes Catalog/Guide $500Ovum. $1000 THE LEADER IN COMPETITION NEW DIA 15 16 NEW PRO SERIES 3 9 TI NEW HIGH TECH AIRFOIL SECTION 10T020% INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCH 53/34 634 72B33/,456 8334568 84566/7 9456677/ 104586/7 106W8W i136EW II5W 116EW 1167 124W 125W 1258 1356 1456 1556 164N 16678 RC PYLON RACING SERIES 500 DIA PITCH 7 5N5/N SERIES 400C 866/777/ 9777 W WIDE BLADE EW EXTRA WIDE N NARROW October 1993 103 PROPELLERS 4 ES 100 THP DESIGN TAILORED HELICAL PITCH DEVELOPEDTOGIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALLTHE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP 66Vz 77 8 677 8 677/,8 67 678 Model Airplane Design Performance AILERON ELEVATOR Modeler RUDDEI book must model airplane builder flyers library covers model airplane design performance modeler mind Instead complicated mathematics 280 ROLL pages numerous illustrations examples used Topics arranged sequence leads illustrated AILERON example design radio control model airplane PITCH zy Toll Free Orders MC VISA & AMEX 1-800-364-BOOK Check orM 0 Challenge Engineering Inc PO Box 67 New Baden TX 77870 TX residents add tax -- US currency Early Developments Terminology Aerodynamics Stability Control Performance Design Author Chevalierprofessor emeritus aeros p ace engineer ing 50 years model building flying AMA 7503 designer several RPVs consultant RPV manufac turers NASA research scientist professional engineer commercial pilot $2495 shinnin2 handina jamming breaking tool Drilling thin metal another thing altogether Well define thin metal anything thinner half diameter drill Difficulty arises because drill removes its own central pivot bearing before cutting lips flutes have penetrated far enough metal supported cylindrical portion hole lips hooks metal other drill deflects wobbles work piece drill bends breaks lucky produces star- keyhole-shaped hole surrounded burrs Again can prevent problem making sure piece solidly backed scrap will hold drill point centered until flutes have penetrated metal scrap may clamped tack soldered secured cyanoacrylate CyA glue holds entering drill point position Its best produce holes thin sheet metal punching first enlarging reaming fretsawing nibbling nibbler small punch-and-die mounted plierlike handles Insert punch-and-die through hole punch metal away bit bit Bernz torch people used sell nibbler less $10 may still available Drills come sets Most commonly seen jobbers drill set graduated i/Mdiameter steps Another type coded whole numbersone through 80 usually sold two groupsone through 60 61 through 80 Letter-coded drill sets through Z metric sets also available Neither number nor letter-coded sets uniformly graduated Modelers use fractional number-coded drills almost exclusively reason wide range drill sizes available holes must drilled precisely enough can tapped threaded threads cut some metal must remain hole example 2-56 screw will slip #40086diameterdrill hole thread hole tap #50 hole 0070-inch-diameter should drilled Dont buy inexpensive drill sets look good-quality set first youll see difference should have set jobbers drills fractional ranging i/I6 inch through 1/64-inch increments Good-quality drills available carbon steel high-speed steel latter useful mainly machine shops drilling stainless steel theyre much expensive set jewelers broaches can find useful inexpensive jewelers broach tapered much like needle since ground five-sided cross-section has five sharp edges can make disk hole cutter thin sheet balsa sharpening piece tubing end Cutting done rotating punching cutting edge should toothed rather being razor sharp Either brass aluminum tubing can used nick end old razor blade make lot little teeth Now weve learned make neat holes its time consider what put Lets begin screws youre going use screws holes should threaded As noted earlier threading done taps Taps hard steel screws flutes create cutting edges thread teeth accept chips produced cutting tap size theres specific corresponding drill size Using right size drill will ensure enough metal remains hole threading Screw tap hole rotate back forth prevent jamming breaking Remove tap entirely hole clear chips Use lubricant except working brass cast iron kinds small screws washers nuts now available size fasteners used can reduced dimensions approximately scale Small fasteners made use instruments other compact devices like REALISTIC MOTION CONTROL VALVES valves feature exhaust speed control UP1 Independant speed control & switching struts $2895 UP2Strut & door control Mustangs Door opens Strut lowers door closes Door opens strut raises door closes $7465 UP3 Strut & door control valve P47 Door opens-strut lowers-door stays openStrut raisesdoor closes$7465 Door Cylinders metal 5/16 bore1 & 15 inch stroke $1900 6 inch diameter scale Mustang wheels Machined bar stock-8 spoke hub bronze bearings solid foam tire weight 10 oz $11500 pair Dealer inquiries welcome RENO UNLIMITED MUSTANG RETRACTS rating jiII Totally enclosed IIIImechanism I4H-all metal 1 inch air cylinder 85degree retraction Fits between ribs$57900 including UP2 valve ULTRA PRECISION Technical Services Ltd 1244 Honeysuckle Crescent Oakville OntarioL6H 2S8 Canada Phone 416842 1703 prices US funds Shipping valves & cylinders $450 104 Model Aviation AN% ThE MOV HoWARDucXEVAIJpA RI GAIN CONTROL ng control can nightmare wrong response given command can take its toll model nerves walletl Radio South know feel about hobby too avid RO enthusiasts nearly half century combined experience modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical in-house radio service can depend Radio South customer satisfaction isnt just motto Its way life Let us put back control Futaba K1AFT CN jAIAThONICS 5524 N Palafox Pensacola FL 32503 repair information 904 434-0909 1-800-962-7802 Toll Free Order Line lOrders Only Pleasell eyeglasses usually have two small screws attach earpieces lens frame common size 00-90 045 diameter screw surprisingly inexpensive corresponding tap costs about dollar Unfortunately die put threads rod costs considerably Happily Sig Manufacturing Co has restored small fasteners its catalog together tap die set 00-90 0-80 1-72 2-56 thread sizes Youll also need correct drills taps 60 /64 53 50 48 43 collection will cost about 40 bucks will last years Another possible source model railroad dealer small screws come several head styleshex flat round etcand look particularly attractive Scale models also surprisingly strong wood balsa trick harden wood thin variety CyA glue Drill wood undersize tap drill apply glue inside hole glue has thoroughly cured redrill tap drill size Treat hole glue again redrill tap metal hole Youll surprised strong positive fastener becomes caution absolutely certain glue has cured youll end up permanently installing drill tap Round stock Modelers frequently need round wood represent such items steel tubing pipes Although dowels hobby shop often work satisfactorily regularly find ourselves trying sand scrape piece square stock round stock Unfortunately round stock often turns out visibly not-round Another reason making own round stock hobby shop dowels often made intentionally oversize use drive fits furniture joints among other things unusual buy piece /s dowel fit inside piece 5A2 OD tubing find dowel wont fit through tube Dowels once made driving wooden sticks through successively smaller sharp-edged holes hardened steel plates may still made way such dowel plates hard find would too expensive too large purposes can however imitate technique using holes drill gauges make sticks smaller convert square round Put point stick select drill-gauge hole will just take off corners square stock barely resist round stock Push tap stick through hole Progress hole next making several passes through necessary Drill gauges come both jobbers numbered sizes Jobbers sizes range Y16 inch through ri inch Al-inch increments Numbered sizes range No 1 0228 inch through No 60 040 inch 60 steps purchased gauges Sears 1980 $429 about 2 inches six inches made hardened 1/is steel sheet Theyre handy conventional role addition special use described above have Everything need know fashion well-made hole size location suits purpose cale/Troy Continued page 68 display WRAM show New York last winter thousands treated full view fine Storch features numerous operating appointments including flaps latching cabin door bomb release landing light trim tabs accurate telescoping landing gear model uses Futaba 7 UAF eight servos SR 1400 mAb batteries inverted OS 91 two-stroke engine spans 93 inches weighs 14 pounds Robs Fieseler Storch FI-156 C-3/Trop risk engines performance anything less True AAC ABC piston/cylinder assemblies Now available over 25 different types popular engines choice professional modelers worldwide Send $200 1993 catalog Performance Specialties ox 3146 nerville NV 89410 Phone 702 265-7523 FAX 702 265-7522 October 1993 105 ne