Scale IN THE LAST column got aero dynamics scratch-build next Stand-off Scale bird have chosen powerplant good 60 choose airfoil will use say 2414 case next consideration size wing Its usually best start wing determine size wing area needed Im what would call heavy builder like beef up scale models stand rigors contest flying lot midHelicopters PRECAUTION prevent crashes heli copter Insurance Most crashes result two thingsmechanical failure human error will concern ourselves mechanical failure article Ball-Links machines incorporate lot hall-links links per form very vital functions failure usually results disaster fail common failure improper installation screwed onto threaded rod end rod should never go threads drilled hole rod screwed further will rupture ball-link possibly wont know until fails beBud Atkinson western flying sites grass cow pasture fly ing fields average build around 9-10 lbs 660 700 sq wing area best weight Eor very light model may go low 600 sq scale models get little squirrelly below 600 sq usually dont fly too scale-like Most popular kits today 600 700 sq category Again biplane exception usually having higher wing area 700 760 sq So turn past building experience heavy Walt Schoonard ginning threaded rod should smoothed off file sandpaper thread smooth point especially tru have cut off threads Dreme disc dykes sharp end threads literally cuts ball-link will fracture Another failure ball-link splitting along mold seams caused inserting too large threaded rod heat fuel fumes attack nylon Schluter ball-link use collar made blue nyrod Cut /4-in length blue nyrod slide over hex end ball-link will never fail next failure ball-links just plain wear out should checked fre light can build scale model Re member too foam wings usually about 1015% heavier built-up wings ways well worth Now come problem thats little sticky Aileron size WW II singleengine fighter types true scale ailerons rather small models able roll properly cases leave span aileron scale increase chord say 3/16 movable area devia ting appearance scale know exceptions use discretion Its easy cut down throw ailerons problem make effective continued page 66 quently looseness ball come off easily should replaced After crash hard landing could have strained overloaded should checkedcontinued page 73 February 1976 15 Left Two years making Fred Hulens T-28 Fiberglass fuse re tracts dive brakes drop tank Above Bob Underwoods Russian Stormovik WW-I took Nats second Stand-off Scale Above Helicopter stand described article made plywood stable holds copter Left Loyde Wheelers Heli-Baby training struts seems almost poised antenna hovers Below Night flying local shopping center Walt claims floats best possible training gear could use /oce4 AT L4 #4 C 6th Annual Pre Season Radio System Check-up pcs December 15 1975April 301976 FULL TIME TECHNICIANS FACTORY TRAINED ST TEST EQUIPMENT NEW MODERN SHOP ONLY GENUINE FACTORY PARTS SFACTION GUARANTEED PRESEASOAI SPECIAL ONLY $2695 plus postage Perform Transmitter Battery Load Check Perform Transmitter Crystal Frequency Count Perform Receiver Battery Load Check Check Battery Charging Circuit Tune Transmitter R F Check Receiver Sensitivity & Adjust Align Receiver RF lF Stages Check Receiver Logic Align Transmitter Encoder Check Servo Stalled Motor Current Repair parts additional Check Servo Mechanics Adjust Servo Centering Perform System Servo Noise Check Shock Test Complete Airborne System Range Check System System Flight Test Necessary rcW Kraft Great Lakes Inc 6787 Wales Ave PO Box 2482 North CantonOhio 41720 & Jack Yarger 216 499-8310 /4ufte s4t deCC BankAmericard Master Charge Welcome RC Scale/Atkinson continued page 15 too small have described flaps previous columns cases scale-size flaps OK Should find subject want model lacking wing areain case stand-off model may increase wing chord lets say cases being noticed too much static judging increase span very much advisable may show up some what Out proportion look too much out scale 1 wider chord say 60 wing adds 60 sq wing next consideration landing gear since large percentage scale models low-wingers discussing wing lay Out gear next step old enemy scale effect rears its head majority cases scale landing gear much too long gangly looks out place also gives ground handling problems So shorten gear length point looks good proportionate rest model exceptionally true tail-draggers Usually scale-size wheels can retained Stand-off Scale nothing measured whatever looks good eye 10 ft what want Scale dihedral lack seems no problem model may du plicated some cases too much dihe dral may reduced somewhat look better true lot civilian light aircraft Now have established wing stab sizes remaining problem fuselage 95% cases fuselages will rather long scaled wingmostly too wide look realistic Also areas such spinners in-line-engine airplanes scale out large 45 cases fuselage may scaled down 4 45 still retain real ism Also nose spinners may reduced around 3 Nose moments may prob lem some aircraft such radial-engine air planes nose usually very short turn will make models tail heavy nose moment may lengthened maybe 1 /2 much because its easy distort scale model lengthening nose too much Seldom necessary lengthen tail moment seldom necessary change rudder fin area seem scale out about right appears some parts country seems some misgivings Stand-off Scale rules concerning static judging understand Stand-off entries should have entered AMA scale Nats since models being judged rivets detailed cockpits detailing meant AMA scale intent sport scale keep airplane simple static standpoint possible answer would enlarge its judging circle 20 ft 40 ft would very diffi cult see small detailing rivets metal seam lines 20 ft rather 10 ft pictures two excellent scale models T-28 Fred Hulen Kansas City Fred spent almost two years building has fiberglass fuselage Fred made plug molds final product can see much time went used Dave Platts original plans Dave won British Nats 66 67 much larger scale Platts kit T-28 Fred did fine job retracts dive brakes drop tank flies good looks has top contests around mid west other shot Bob Underwoods St Louis unusual Stormovik WW II ground-attack fighter Bob went Nats take second Stand-off excellent flying model rather unusual feature Stormovik gear retracted straight back does pre sent some problems scale models wing almost flat little no dihedral address 734 N 6th St Ter Blue Springs Mo 64015 66 Model Aviation KRAFT TRYWItAjA~1S SCALE ACCESSORIES KITS INE GUN KITS ENGINE KITS & CYLINDERS PILOTSWHEELS PROPS & HANGERS SPINNERS INGS CANOPIES K COWLS ASK FOR OUR PRODUCTS AT YOUR DEALER OR SEND 25 FOR OUR CATAIOG WILLIAMS BROS DtPT M 181 PAWNEE ST SAN MARCOS CA 92069
Edition: Model Aviation - 1976/02
Page Numbers: 15, 66
Edition: Model Aviation - 1976/02
Page Numbers: 15, 66
Scale IN THE LAST column got aero dynamics scratch-build next Stand-off Scale bird have chosen powerplant good 60 choose airfoil will use say 2414 case next consideration size wing Its usually best start wing determine size wing area needed Im what would call heavy builder like beef up scale models stand rigors contest flying lot midHelicopters PRECAUTION prevent crashes heli copter Insurance Most crashes result two thingsmechanical failure human error will concern ourselves mechanical failure article Ball-Links machines incorporate lot hall-links links per form very vital functions failure usually results disaster fail common failure improper installation screwed onto threaded rod end rod should never go threads drilled hole rod screwed further will rupture ball-link possibly wont know until fails beBud Atkinson western flying sites grass cow pasture fly ing fields average build around 9-10 lbs 660 700 sq wing area best weight Eor very light model may go low 600 sq scale models get little squirrelly below 600 sq usually dont fly too scale-like Most popular kits today 600 700 sq category Again biplane exception usually having higher wing area 700 760 sq So turn past building experience heavy Walt Schoonard ginning threaded rod should smoothed off file sandpaper thread smooth point especially tru have cut off threads Dreme disc dykes sharp end threads literally cuts ball-link will fracture Another failure ball-link splitting along mold seams caused inserting too large threaded rod heat fuel fumes attack nylon Schluter ball-link use collar made blue nyrod Cut /4-in length blue nyrod slide over hex end ball-link will never fail next failure ball-links just plain wear out should checked fre light can build scale model Re member too foam wings usually about 1015% heavier built-up wings ways well worth Now come problem thats little sticky Aileron size WW II singleengine fighter types true scale ailerons rather small models able roll properly cases leave span aileron scale increase chord say 3/16 movable area devia ting appearance scale know exceptions use discretion Its easy cut down throw ailerons problem make effective continued page 66 quently looseness ball come off easily should replaced After crash hard landing could have strained overloaded should checkedcontinued page 73 February 1976 15 Left Two years making Fred Hulens T-28 Fiberglass fuse re tracts dive brakes drop tank Above Bob Underwoods Russian Stormovik WW-I took Nats second Stand-off Scale Above Helicopter stand described article made plywood stable holds copter Left Loyde Wheelers Heli-Baby training struts seems almost poised antenna hovers Below Night flying local shopping center Walt claims floats best possible training gear could use /oce4 AT L4 #4 C 6th Annual Pre Season Radio System Check-up pcs December 15 1975April 301976 FULL TIME TECHNICIANS FACTORY TRAINED ST TEST EQUIPMENT NEW MODERN SHOP ONLY GENUINE FACTORY PARTS SFACTION GUARANTEED PRESEASOAI SPECIAL ONLY $2695 plus postage Perform Transmitter Battery Load Check Perform Transmitter Crystal Frequency Count Perform Receiver Battery Load Check Check Battery Charging Circuit Tune Transmitter R F Check Receiver Sensitivity & Adjust Align Receiver RF lF Stages Check Receiver Logic Align Transmitter Encoder Check Servo Stalled Motor Current Repair parts additional Check Servo Mechanics Adjust Servo Centering Perform System Servo Noise Check Shock Test Complete Airborne System Range Check System System Flight Test Necessary rcW Kraft Great Lakes Inc 6787 Wales Ave PO Box 2482 North CantonOhio 41720 & Jack Yarger 216 499-8310 /4ufte s4t deCC BankAmericard Master Charge Welcome RC Scale/Atkinson continued page 15 too small have described flaps previous columns cases scale-size flaps OK Should find subject want model lacking wing areain case stand-off model may increase wing chord lets say cases being noticed too much static judging increase span very much advisable may show up some what Out proportion look too much out scale 1 wider chord say 60 wing adds 60 sq wing next consideration landing gear since large percentage scale models low-wingers discussing wing lay Out gear next step old enemy scale effect rears its head majority cases scale landing gear much too long gangly looks out place also gives ground handling problems So shorten gear length point looks good proportionate rest model exceptionally true tail-draggers Usually scale-size wheels can retained Stand-off Scale nothing measured whatever looks good eye 10 ft what want Scale dihedral lack seems no problem model may du plicated some cases too much dihe dral may reduced somewhat look better true lot civilian light aircraft Now have established wing stab sizes remaining problem fuselage 95% cases fuselages will rather long scaled wingmostly too wide look realistic Also areas such spinners in-line-engine airplanes scale out large 45 cases fuselage may scaled down 4 45 still retain real ism Also nose spinners may reduced around 3 Nose moments may prob lem some aircraft such radial-engine air planes nose usually very short turn will make models tail heavy nose moment may lengthened maybe 1 /2 much because its easy distort scale model lengthening nose too much Seldom necessary lengthen tail moment seldom necessary change rudder fin area seem scale out about right appears some parts country seems some misgivings Stand-off Scale rules concerning static judging understand Stand-off entries should have entered AMA scale Nats since models being judged rivets detailed cockpits detailing meant AMA scale intent sport scale keep airplane simple static standpoint possible answer would enlarge its judging circle 20 ft 40 ft would very diffi cult see small detailing rivets metal seam lines 20 ft rather 10 ft pictures two excellent scale models T-28 Fred Hulen Kansas City Fred spent almost two years building has fiberglass fuselage Fred made plug molds final product can see much time went used Dave Platts original plans Dave won British Nats 66 67 much larger scale Platts kit T-28 Fred did fine job retracts dive brakes drop tank flies good looks has top contests around mid west other shot Bob Underwoods St Louis unusual Stormovik WW II ground-attack fighter Bob went Nats take second Stand-off excellent flying model rather unusual feature Stormovik gear retracted straight back does pre sent some problems scale models wing almost flat little no dihedral address 734 N 6th St Ter Blue Springs Mo 64015 66 Model Aviation KRAFT TRYWItAjA~1S SCALE ACCESSORIES KITS INE GUN KITS ENGINE KITS & CYLINDERS PILOTSWHEELS PROPS & HANGERS SPINNERS INGS CANOPIES K COWLS ASK FOR OUR PRODUCTS AT YOUR DEALER OR SEND 25 FOR OUR CATAIOG WILLIAMS BROS DtPT M 181 PAWNEE ST SAN MARCOS CA 92069
