Control Line. Scale Mike Gretz CAUTIOUSLY small proud Frenchman made way through crowd model airplane World Champ ionships holding masterpiece high overhead strutted out onto run way gently setting down ray early June sun bounced off glimmering blue white color scheme Carefully wiping off microscopic piece dust thought saw ready show cap tive audience flew good looked went over judge after what looked short heated argu ment stormed back beauty wound up foot gave good swift kick Thats way Jeff Gretz brother pitman two WCs described cident witnessed Sweden 1976 may sound like make-believe actu ally happened way vivid example unthinking people can come under pressure would hard find Some pressures youll feel con test normal stimulating others entirely man-made unneces sary Dont let man-made pressures turn own worst enemy dur ing competition Hotheads dont win prizes Steve Smith 14 Foster St Avon Massa chusetts 02322 sent pictures SE5a built Top Flite kit kit designed advertised RC easily converted control line addition 3-line bellcrank Steve uses Supertigre 60 16-4 prop covered silk finished K&B Superpoxy Pactra Flat Clear pictures Steve sent color Continued page 92 SE5a built Steve Smith Top Flite RC kit Exhaust ST 60 exits through eight scale openings bottom cowl Right features full cockpit details flying wires machine guns scale wheels etc Covering silk finished K&B Pactra paints 30 Model Aviation P61 Black Widow Jeffrey Perez Sport Scale winner 1977 Nats Built Japanese kit powered OS 25s Rev-Up 9-Ss Has J-Roberts 3-line control system Paula Bauer entered Junkers 01 Sport Scale last Nats Enya 45BB engine Top Flite 11-6 prop Monokoted K&B Superpoxy finish Paula Senior age class uses Cox 15 Prop 9 X 3 8 lon gas tank mounted very easily using two screweyes opened up rubberbands centered behind engine Check CG adding weight required plane flown 52 lines 015 dia Flying first flights use outer hole control horn since planes reactions will milder inner ones used Since frontal area profile plane small model really moves out under power After start engine run ning satisfaction move out center circle double check controls ready give part ner signal release plane As speeds along ground slowly feed small amount up takes off reaches about 10 feet altitude level off Move handle gently get feel plane before start violent maneuvers As know model has different characteristics rates re sponse Know model first before ex perimenting motor stops grad ually feed up get close ground perfect three-point landing Im sure will thrilled have fly historic powerful looking model Fully decorated looks great CL Scale/Gretz continued page 30 rephotographed black white thus loosing some sharpness process hope what see magazine adequately conveys ex cellence Steves workmanship scale details part what Steve wrote letter first tough fly 4 oz extra nose weight correct deflec tion ailerons flies great use Tatone expansion chamber exhausting down chamber under motor mounts exhaust leaves plane eight openings bottom pan has full cockpit guns Williams Brothers plan enter few contests planeits fun competing whether win lose Test Flying Problem Ab thrill test flying new scale masterpiece first timebut what something goes wrong As recent case Last Sun day day guess what couldnt get off ground Ryan weighs 8 pounds Fox 60 Perry carb 14-6 proplots power plane almost wants stand its tail held vertically engine running Wheels roll freely Balance UC per plans plane released take-off controls elevator/flaps neutral plane noses over immediately breaks prop Incidentally flying field close-cut grass smooth enough 15-size planes up dont want add weight tail keep down because 8Y4 plus pounds balance basically OK Id never experienced before talked experienced friend last night RC field solution give full up elevator would also mean flaps down keep tail down taxi-takeoff until flying speed almost obtained neutralize somewhat come off up fly have thoughts suggestions youve flown taildragger type scale model before probably recognize problem Nine times out ten nothing wrong model itself tendency taildraggers nose over start takeoff run also landing Ive done both Zlin Akrobat What needed pilot retrained full-scale-like flying techniques scale model has too much weight its wheels too high thrust line CG take off non-scale controlline models attempt normal control line style takeoff full power high throttle quick release scale model will almost invariably end up nosing over engine trying pull model forward point high above wheels long lever model thus starts rotate around wheels because lack airflow over tail surfaces paved hard surface run way wheels can move freely problem lessened 92 Modet Aviation 7060 HOLLYWOOD BLVD LOS ANGELES CA 90028 * U liii EC PER MENTAL KDH propeller decal sheet #1147 provides authentic insignia put crowning oucn scale propeller decal sheet accurately reproduced full color Available Hobby Lobby International 3 Franklin Pike Circle Brentwood TN 37027 $345 plus $1 postage EU 5155 E M EN TA L eliminated Non-scale CL models can get away full power takeoff because usually very light thrust line CG low landing gear can moved forward regard whether scale full-scale type takeoff easier safer scale model well being much impressive Thus doubly important CL scale model equipped throttlable engine throttle just added gim mick get contest points another responsive critical control requiring equal attention along elevator Nose-over takeoff can often elimi nated 1 Applying power slowly smoothly Note full-size high-pow ered Mustangs etc have known nose over throttle advanced too quickly 2 Hold full up elevator start takeoff roll Flaps down usually wont hurt point Gradu ally let off up plane gathers speed lift-off should hardly holding up elevator Try slow realistic climb-out 3 Dont takeoff wind directly back Start takeoff down circle slightly wind coming over left shoulder During landing scale model can have nose-over problem similar seen during takeoff Part cause land ing models forward inertia rather engine thrust effect similar CG long way above wheels thrust line things try remember landing 1 Make smooth slightly flared nose high touchdown main wheels dont worry about three-point preferably downwind best control 2 touch down youll need some down pressure keep main wheels ground until airspeed starts bleed off experience must learn tell exactly much up elevator hold first keep tail riding too high get tail ground quickly possible model ballooning back up air Elevator position also critical during Taxi maneuver lap rule book requirements same full-size airplane taxiing downwind wind coming over models tail should hold down elevator keep tail wheel ground Taxiing upwind wind coming over models nose hold full up elevator keep tail down Taxi should done slow enough speed elevator position isnt overly affected models forward speed other words taxi too fast holding down elevator airplane may nose over hints make sound diffi cult really Dont worry facing first CL Scale flight dare say havent really enjoyed control line flying until have held onto large responsive scale model Find out self PLEASE DO NOT FLY NEAR POWER LINES Mike Gretz Box 162 Montezuma IA 50171 CL Aerobatics/Paul continued page 31 okote glue sealed joints using acetone Its good idea brush seams thin line Hobby Poxy clear Now time assemble wing stabilizer fuselage Cover surfaces masking tape newspaper protect Monokote during assembly finishing fuselage Fuselage PreparationM ask off Mono kote edge next fuselage leaving 1/32 Monokote exposed joining fillets Apply Epoxolite fillets small p05 sible Apply very slightly thinned Hobby Poxy Formula II glue entire fuselage fillets wipe off excess paper towels allow cure Sand very lightly 400 wet dry paper used dry Spray fairly heavy coat Super Poxy primer Sand off excess primer using 400 paper Spray second coat primer Sand 400 paper wet using good lighting until satisfied September 1978 93
Edition: Model Aviation - 1978/09
Page Numbers: 30, 92, 93
Control Line. Scale Mike Gretz CAUTIOUSLY small proud Frenchman made way through crowd model airplane World Champ ionships holding masterpiece high overhead strutted out onto run way gently setting down ray early June sun bounced off glimmering blue white color scheme Carefully wiping off microscopic piece dust thought saw ready show cap tive audience flew good looked went over judge after what looked short heated argu ment stormed back beauty wound up foot gave good swift kick Thats way Jeff Gretz brother pitman two WCs described cident witnessed Sweden 1976 may sound like make-believe actu ally happened way vivid example unthinking people can come under pressure would hard find Some pressures youll feel con test normal stimulating others entirely man-made unneces sary Dont let man-made pressures turn own worst enemy dur ing competition Hotheads dont win prizes Steve Smith 14 Foster St Avon Massa chusetts 02322 sent pictures SE5a built Top Flite kit kit designed advertised RC easily converted control line addition 3-line bellcrank Steve uses Supertigre 60 16-4 prop covered silk finished K&B Superpoxy Pactra Flat Clear pictures Steve sent color Continued page 92 SE5a built Steve Smith Top Flite RC kit Exhaust ST 60 exits through eight scale openings bottom cowl Right features full cockpit details flying wires machine guns scale wheels etc Covering silk finished K&B Pactra paints 30 Model Aviation P61 Black Widow Jeffrey Perez Sport Scale winner 1977 Nats Built Japanese kit powered OS 25s Rev-Up 9-Ss Has J-Roberts 3-line control system Paula Bauer entered Junkers 01 Sport Scale last Nats Enya 45BB engine Top Flite 11-6 prop Monokoted K&B Superpoxy finish Paula Senior age class uses Cox 15 Prop 9 X 3 8 lon gas tank mounted very easily using two screweyes opened up rubberbands centered behind engine Check CG adding weight required plane flown 52 lines 015 dia Flying first flights use outer hole control horn since planes reactions will milder inner ones used Since frontal area profile plane small model really moves out under power After start engine run ning satisfaction move out center circle double check controls ready give part ner signal release plane As speeds along ground slowly feed small amount up takes off reaches about 10 feet altitude level off Move handle gently get feel plane before start violent maneuvers As know model has different characteristics rates re sponse Know model first before ex perimenting motor stops grad ually feed up get close ground perfect three-point landing Im sure will thrilled have fly historic powerful looking model Fully decorated looks great CL Scale/Gretz continued page 30 rephotographed black white thus loosing some sharpness process hope what see magazine adequately conveys ex cellence Steves workmanship scale details part what Steve wrote letter first tough fly 4 oz extra nose weight correct deflec tion ailerons flies great use Tatone expansion chamber exhausting down chamber under motor mounts exhaust leaves plane eight openings bottom pan has full cockpit guns Williams Brothers plan enter few contests planeits fun competing whether win lose Test Flying Problem Ab thrill test flying new scale masterpiece first timebut what something goes wrong As recent case Last Sun day day guess what couldnt get off ground Ryan weighs 8 pounds Fox 60 Perry carb 14-6 proplots power plane almost wants stand its tail held vertically engine running Wheels roll freely Balance UC per plans plane released take-off controls elevator/flaps neutral plane noses over immediately breaks prop Incidentally flying field close-cut grass smooth enough 15-size planes up dont want add weight tail keep down because 8Y4 plus pounds balance basically OK Id never experienced before talked experienced friend last night RC field solution give full up elevator would also mean flaps down keep tail down taxi-takeoff until flying speed almost obtained neutralize somewhat come off up fly have thoughts suggestions youve flown taildragger type scale model before probably recognize problem Nine times out ten nothing wrong model itself tendency taildraggers nose over start takeoff run also landing Ive done both Zlin Akrobat What needed pilot retrained full-scale-like flying techniques scale model has too much weight its wheels too high thrust line CG take off non-scale controlline models attempt normal control line style takeoff full power high throttle quick release scale model will almost invariably end up nosing over engine trying pull model forward point high above wheels long lever model thus starts rotate around wheels because lack airflow over tail surfaces paved hard surface run way wheels can move freely problem lessened 92 Modet Aviation 7060 HOLLYWOOD BLVD LOS ANGELES CA 90028 * U liii EC PER MENTAL KDH propeller decal sheet #1147 provides authentic insignia put crowning oucn scale propeller decal sheet accurately reproduced full color Available Hobby Lobby International 3 Franklin Pike Circle Brentwood TN 37027 $345 plus $1 postage EU 5155 E M EN TA L eliminated Non-scale CL models can get away full power takeoff because usually very light thrust line CG low landing gear can moved forward regard whether scale full-scale type takeoff easier safer scale model well being much impressive Thus doubly important CL scale model equipped throttlable engine throttle just added gim mick get contest points another responsive critical control requiring equal attention along elevator Nose-over takeoff can often elimi nated 1 Applying power slowly smoothly Note full-size high-pow ered Mustangs etc have known nose over throttle advanced too quickly 2 Hold full up elevator start takeoff roll Flaps down usually wont hurt point Gradu ally let off up plane gathers speed lift-off should hardly holding up elevator Try slow realistic climb-out 3 Dont takeoff wind directly back Start takeoff down circle slightly wind coming over left shoulder During landing scale model can have nose-over problem similar seen during takeoff Part cause land ing models forward inertia rather engine thrust effect similar CG long way above wheels thrust line things try remember landing 1 Make smooth slightly flared nose high touchdown main wheels dont worry about three-point preferably downwind best control 2 touch down youll need some down pressure keep main wheels ground until airspeed starts bleed off experience must learn tell exactly much up elevator hold first keep tail riding too high get tail ground quickly possible model ballooning back up air Elevator position also critical during Taxi maneuver lap rule book requirements same full-size airplane taxiing downwind wind coming over models tail should hold down elevator keep tail wheel ground Taxiing upwind wind coming over models nose hold full up elevator keep tail down Taxi should done slow enough speed elevator position isnt overly affected models forward speed other words taxi too fast holding down elevator airplane may nose over hints make sound diffi cult really Dont worry facing first CL Scale flight dare say havent really enjoyed control line flying until have held onto large responsive scale model Find out self PLEASE DO NOT FLY NEAR POWER LINES Mike Gretz Box 162 Montezuma IA 50171 CL Aerobatics/Paul continued page 31 okote glue sealed joints using acetone Its good idea brush seams thin line Hobby Poxy clear Now time assemble wing stabilizer fuselage Cover surfaces masking tape newspaper protect Monokote during assembly finishing fuselage Fuselage PreparationM ask off Mono kote edge next fuselage leaving 1/32 Monokote exposed joining fillets Apply Epoxolite fillets small p05 sible Apply very slightly thinned Hobby Poxy Formula II glue entire fuselage fillets wipe off excess paper towels allow cure Sand very lightly 400 wet dry paper used dry Spray fairly heavy coat Super Poxy primer Sand off excess primer using 400 paper Spray second coat primer Sand 400 paper wet using good lighting until satisfied September 1978 93
Edition: Model Aviation - 1978/09
Page Numbers: 30, 92, 93
Control Line. Scale Mike Gretz CAUTIOUSLY small proud Frenchman made way through crowd model airplane World Champ ionships holding masterpiece high overhead strutted out onto run way gently setting down ray early June sun bounced off glimmering blue white color scheme Carefully wiping off microscopic piece dust thought saw ready show cap tive audience flew good looked went over judge after what looked short heated argu ment stormed back beauty wound up foot gave good swift kick Thats way Jeff Gretz brother pitman two WCs described cident witnessed Sweden 1976 may sound like make-believe actu ally happened way vivid example unthinking people can come under pressure would hard find Some pressures youll feel con test normal stimulating others entirely man-made unneces sary Dont let man-made pressures turn own worst enemy dur ing competition Hotheads dont win prizes Steve Smith 14 Foster St Avon Massa chusetts 02322 sent pictures SE5a built Top Flite kit kit designed advertised RC easily converted control line addition 3-line bellcrank Steve uses Supertigre 60 16-4 prop covered silk finished K&B Superpoxy Pactra Flat Clear pictures Steve sent color Continued page 92 SE5a built Steve Smith Top Flite RC kit Exhaust ST 60 exits through eight scale openings bottom cowl Right features full cockpit details flying wires machine guns scale wheels etc Covering silk finished K&B Pactra paints 30 Model Aviation P61 Black Widow Jeffrey Perez Sport Scale winner 1977 Nats Built Japanese kit powered OS 25s Rev-Up 9-Ss Has J-Roberts 3-line control system Paula Bauer entered Junkers 01 Sport Scale last Nats Enya 45BB engine Top Flite 11-6 prop Monokoted K&B Superpoxy finish Paula Senior age class uses Cox 15 Prop 9 X 3 8 lon gas tank mounted very easily using two screweyes opened up rubberbands centered behind engine Check CG adding weight required plane flown 52 lines 015 dia Flying first flights use outer hole control horn since planes reactions will milder inner ones used Since frontal area profile plane small model really moves out under power After start engine run ning satisfaction move out center circle double check controls ready give part ner signal release plane As speeds along ground slowly feed small amount up takes off reaches about 10 feet altitude level off Move handle gently get feel plane before start violent maneuvers As know model has different characteristics rates re sponse Know model first before ex perimenting motor stops grad ually feed up get close ground perfect three-point landing Im sure will thrilled have fly historic powerful looking model Fully decorated looks great CL Scale/Gretz continued page 30 rephotographed black white thus loosing some sharpness process hope what see magazine adequately conveys ex cellence Steves workmanship scale details part what Steve wrote letter first tough fly 4 oz extra nose weight correct deflec tion ailerons flies great use Tatone expansion chamber exhausting down chamber under motor mounts exhaust leaves plane eight openings bottom pan has full cockpit guns Williams Brothers plan enter few contests planeits fun competing whether win lose Test Flying Problem Ab thrill test flying new scale masterpiece first timebut what something goes wrong As recent case Last Sun day day guess what couldnt get off ground Ryan weighs 8 pounds Fox 60 Perry carb 14-6 proplots power plane almost wants stand its tail held vertically engine running Wheels roll freely Balance UC per plans plane released take-off controls elevator/flaps neutral plane noses over immediately breaks prop Incidentally flying field close-cut grass smooth enough 15-size planes up dont want add weight tail keep down because 8Y4 plus pounds balance basically OK Id never experienced before talked experienced friend last night RC field solution give full up elevator would also mean flaps down keep tail down taxi-takeoff until flying speed almost obtained neutralize somewhat come off up fly have thoughts suggestions youve flown taildragger type scale model before probably recognize problem Nine times out ten nothing wrong model itself tendency taildraggers nose over start takeoff run also landing Ive done both Zlin Akrobat What needed pilot retrained full-scale-like flying techniques scale model has too much weight its wheels too high thrust line CG take off non-scale controlline models attempt normal control line style takeoff full power high throttle quick release scale model will almost invariably end up nosing over engine trying pull model forward point high above wheels long lever model thus starts rotate around wheels because lack airflow over tail surfaces paved hard surface run way wheels can move freely problem lessened 92 Modet Aviation 7060 HOLLYWOOD BLVD LOS ANGELES CA 90028 * U liii EC PER MENTAL KDH propeller decal sheet #1147 provides authentic insignia put crowning oucn scale propeller decal sheet accurately reproduced full color Available Hobby Lobby International 3 Franklin Pike Circle Brentwood TN 37027 $345 plus $1 postage EU 5155 E M EN TA L eliminated Non-scale CL models can get away full power takeoff because usually very light thrust line CG low landing gear can moved forward regard whether scale full-scale type takeoff easier safer scale model well being much impressive Thus doubly important CL scale model equipped throttlable engine throttle just added gim mick get contest points another responsive critical control requiring equal attention along elevator Nose-over takeoff can often elimi nated 1 Applying power slowly smoothly Note full-size high-pow ered Mustangs etc have known nose over throttle advanced too quickly 2 Hold full up elevator start takeoff roll Flaps down usually wont hurt point Gradu ally let off up plane gathers speed lift-off should hardly holding up elevator Try slow realistic climb-out 3 Dont takeoff wind directly back Start takeoff down circle slightly wind coming over left shoulder During landing scale model can have nose-over problem similar seen during takeoff Part cause land ing models forward inertia rather engine thrust effect similar CG long way above wheels thrust line things try remember landing 1 Make smooth slightly flared nose high touchdown main wheels dont worry about three-point preferably downwind best control 2 touch down youll need some down pressure keep main wheels ground until airspeed starts bleed off experience must learn tell exactly much up elevator hold first keep tail riding too high get tail ground quickly possible model ballooning back up air Elevator position also critical during Taxi maneuver lap rule book requirements same full-size airplane taxiing downwind wind coming over models tail should hold down elevator keep tail wheel ground Taxiing upwind wind coming over models nose hold full up elevator keep tail down Taxi should done slow enough speed elevator position isnt overly affected models forward speed other words taxi too fast holding down elevator airplane may nose over hints make sound diffi cult really Dont worry facing first CL Scale flight dare say havent really enjoyed control line flying until have held onto large responsive scale model Find out self PLEASE DO NOT FLY NEAR POWER LINES Mike Gretz Box 162 Montezuma IA 50171 CL Aerobatics/Paul continued page 31 okote glue sealed joints using acetone Its good idea brush seams thin line Hobby Poxy clear Now time assemble wing stabilizer fuselage Cover surfaces masking tape newspaper protect Monokote during assembly finishing fuselage Fuselage PreparationM ask off Mono kote edge next fuselage leaving 1/32 Monokote exposed joining fillets Apply Epoxolite fillets small p05 sible Apply very slightly thinned Hobby Poxy Formula II glue entire fuselage fillets wipe off excess paper towels allow cure Sand very lightly 400 wet dry paper used dry Spray fairly heavy coat Super Poxy primer Sand off excess primer using 400 paper Spray second coat primer Sand 400 paper wet using good lighting until satisfied September 1978 93