S Soaring U Dan Pruss LAST MONTH mention made Blame Rawdon San Fernando Val ley Silent Flyers attempt new type contest event picture measuring device printed month Blame points out device regular tripod simple sighting bar protractor tached photo describes well Blame went say actual measurement planes altitudes didnt pose problems diffi cult sight lower faster flying planes case credibility calculated altitudes great few problems apparent can worked out stemmed several planes approaching gate simultaneously simple communications system would solution since gate master angle measurers quite distance apart Blames system base 383 feet Last months column gave other details same club group originated Desert Dash cross-country racing comes variation themea desert goal return con test task simple Launch find lift within five minutes release begin flight goal 28 miles away return launch site out landing Barbara Henon reported able get four rounds each flier four chances make distance Rules simple flier finished course finisher would win finished best time would win After some luckless attempts light lift other fliers Rick Pearson Para gon completed course 56 miles 37 minutes 17 seconds As day wore lift got better Rich Harty Paragon beat corners Sports man Class 3345 Larry Pettyjohn flew course 2410 Expert class outdo Pearson Blame Rawdon Goose smoked course 22 minutes best time meet above again proves flexibility soaring enjoys task design types competition whether its club na tional level once plane shows up field stops show Usually planes unique design often possess outstanding finish Elmira meet past September Paul Weigland Rochester NY such plane Tol edo couple years back remember 16-foot beauty called Lamreht Thats thermal spelled backwards case missed Anyway Paul its designer builder finisher took honors year Paul showed up Elmira modified Aquila called Aquila 1000 modification didnt first appear drastic though finish did draw s attention what Paul done enlarge airfoil proportionately teninch chord 100-inch span gave bird 1000 sq area hence Conunued page 91 February 1978 29 Baline Rawdons altitude finder described last months column As Dan says picture explains itself tripod available rest consists card wood string tape Right Paul Weiglands Aquila 1000modifica tion 9- 10-in chord yielded 1000 sq area Below Wing flaps added kept normal chord thickness wing roots Below R simple yet elegant method transitioning stock fuselage en larged wing chord Text supplies details ered evenly dry about 30 minutes spray couple wet coats clear acrylic Reduce acrylic mater ials will spray no orange peel Allow dry overnight tape up multi-color schemes rea son clear after base color prevent kinds finger marks getting porous paint masking multi-colors make sure have no spot can leak overspray onto base color t coats multi-colors should sprayed rather dry seal tape edges Allow multi-ctMors dry several hours before removing tape pulling back over itself Any feather edges paint left standing can removed scraping light ly single-edged razor blade should done carefully Now make sure edges sharp no overspray present overspray detected sand #600 grit wet wipe dry Now wipe entire helicopter Preps-Sol DuPont grease wax re mover remove finger marks Using tac rag remove lint dust Spray couple wet coats acrylic clear over painted surfaces Allow dry overnight Now sand paint edges smooth #600 grit wet wipe clean tac lint free Now comes hard partbut part will make helicopter beautiful durable Because Delthane difficult spray should practice some ob ject such old gallon paint can Mix up small quantity per instructions container practice spraying until get knack sprays like enamel flows after surface will run spray too wet will flow spray too dry sure wear pro tective mask Let tell againwear protective mask Delthane will cure overnight can safely handled 24 hours have used type finish years have won single best finish con test have ever entered except beaten plane painted another person beat own handiwork Oh well its fickle worldso what may want practice whole procedure old box board sheet metal until get hang great part Ditzler Acrylic Lacquer very forgiving mistakes dirt runs bugs can sanded out done over within minutes times gave full curing times need adhered repairs can done soon can touch paint usually just minutes Bill materials 1 gallon DuPont #3608 Thinner $350 1 pint DuPont Preps-Sol Cleaner $180 1 quart DuPont #808 oxide primer $450 1 roll 3/4-inch tape $200 1 roll 1/4-inch tape 85 1 roll 1/8-inch tape 85 1 Tac-Rag 60 1 pint color $350 ea 1 quart Ditzler Acrylic Clear $450 1 quart Ditzler Delthane & Hardener $750 minimals will enough several helicopters sure mix amount Delthane going use will cure up un usable Clean out spray gun after use lacquer thinner Cost-wise am sure will find economical other process will like results World-Wide RC Helicopter Symposium Because great manufac turers cannot come time planned symposium new date will have selected column will keep informed progress made flying trying hard enough Walt Schoonard 2080 Sharon Rd Winter Park FL 32789 RC Soaring/Pruss continued page 29 name Aquila 1000 So could use existing fuselage Paul maintained original root rib dimensions transitioned en larged section root next rib shown photos proFebruary 1978 91 Peflormance Flying . K & B 35cc 21 R/C ENGINE flying WORK HORSE its site no rugged werful dependable engine mpetitors its class size will know theyre up against winner Easy start Requires no break-in period Features incIude Efficient Muffler r 90 decibels Cylinder Piston Bearings nced By-Pass Port ing y Carburetor Density Aluminum Die Casting YOU CANT GET ANY LIGHTER SMALLER OR SIMPLER THAN THIS pulse commander quality American made rudder-only pulse proportional radio system offers lightest weight smallest size flute pack available Only 21 oz total airborne weight Baby system Rudder-only flying perfect way start RIC also provides relaxing changeof-pace experienced flyer units come completely wired tested guaranteed ni-cd batteries charger furnished flute pack Transmitter battery included Eveready No 276 9V dry battery equivalent required systems $75 complete Available 72080 72160 72240 72320 72400 7296075640 531 532 533 534 535 MHz Ham license required 53MHz frequencies BABY 10G75 Airborne weight21 oz 595 g 010 Pee Wee 020 planes up 36 span STANDARD 10076 Airborne weight31 oz 88 g Babe Bee end slow flying Tee Dee 049 planes up 42 span BABY TWIN 10075T STOMPER 10077 Airborne weight23 oz 652 g Airborne weight35 oz 992 g 020 slow flying 049 planes hot 049 slow flying 15 ships up 40 span NOTE 27 MHz systems still available Baby 10015 $6995 Baby Twin lOGiST $7295 Standard 10016 $7195 Stomper 10017 $7495 Phase send complete utalog Enclosed isis refunded NAPIE fifor 1st cIa mail ..ling otherADDRESS duced favorable aesthetic effect al lowed stock wing interchangeability stock fuselage Flaps added shown actu ated Ia pull system provided dial cord spoiler systems cord instead being connected directly flaps via 90-degree bend through tubing spoiler system runs parallel through wing arm 90-degree bellcrank 1/16-in wire pushrod run bellcranks other arm flaps bellcrank mounted plywood sheet between ribs spring loaded preset down position adjustable stop Flap travel few degrees either side neutral flaps used primarily effect slight camber change Paul claims flap flutter has problem would think might exist nonrigid system However atten tion should kept regard battery drain because such drive system award winning finishes Paul uses acrylic lacquer fuselage flying surfaces Monokoted trim also Monokote shadowed letter effect letters numbers cut adhesive backed material stuck black Monokote trimsheet desired outline cut out finished pattern applied wings tail whatevera eye-pleasing effect Two new products long overdue come Sailplane Accessory Co Box 412 Bardonia NY 10954 wing support system incorporates two spring steel blades method isnt new Some imported kits have system years Jerry Mrlik has used Astro-Jeffs just long However besides blades Sailplane Accessory Co provides beautifully molded set wing channels also center vee section latter wasnt available imports blade measures 7 X / inches wing blade box 53/4 X 5/s vee block measures four inches long 1/ deep channels vee section inch thick complete assembly sells $750 Advantages such wing mounting system includes better launches because less wing flex Also such mount short wing guides can used near trailing edge allows wing flex forward event sudden stopping has saved few Astro-Jeff wings other product same com pany called E-Z Spoiler Linkage Again system isnt new is now available USA components beautifully accurately molded provide direct positive link fuselage wing package says spoiler linkage hardware also could used actuating ailerons flaps assembly sells $350 FAI Report Members National Soaring Society again coordinate planning FAI team selection program 1978 possible world championship 1979 accord current FAI practice scheduling world championships particular category every-other-year basis Thus 1979 event earliest another RC Soaring World Cham pionships can held NSS president Dr Stan Pfost appointed Ray Marvin head up coordination effort conjunction AMA Ray ad vises program expected similar Jim Simpson adminis tered 1976 means series quar ter finals possibly April through June semi-finals July finals would September Details must first approved participants pro gram Sites will announced later WINGS Women National Gliding Society announced 1977 competition winner Taking four best contests out six scoring Joan Nolte tops Joan wife latest fourth LSF level V Neil Nolte case wondering depart ment annual pilgrimage Cumber land Md year success gourmets point view nual post-contest-season get-together 92 Model Aviation [ME I/C Un BOX 511E HIGGINSVILLE MO fog/rainout year no-contest no-pressure event usually brings out dif ferent types planes usually associ ated contest circuit year no different strictly hangar fly ing Weather kept us close fire Dave Corven did manage 25-minute flightonly because got up before breakfast rest Detroit contin gent smarter noon Saturday clans Detroit Pennsylvania fondue pots going homemade wine sausage laid out does say 10-minute maxes can fun Let rain Saturday evening Don Clark DCRC coordinates annually Cum berland Aero Modeling Society nounced banquet no change schedule next year So circle Nov 4 5 1978 fun soaring week-end whatever weather Dan Pruss Rt 2 Box 490 Plainfield IL 60544 R C Old-Timers/Mathews continued page 30 car others flying fre quency wait got model down staying off controls stalled did spin due wash-out have also gone back placing name phone number models P&W ribs Gene Walloch producing wing stab rib kits 15 old-timer de signs really required build kits plans strip wood Genes line-up includes such favor ites Scientific Mercury Comet Sailplane original Berkley Buc caneer wood quality good band-sawing requires little sanding accurate Send SSAE P&W Model Service PO Box 925 Monrovia CA 91016 complete list spinning Webs Such majority old-timer designs use wing spars con siderable depth relative airfoil Ex ceptions exist course notably multi-spar approach Chet Lanzo common practice use two deep spars bottom side top trend may have associ ated wide use silk double layers bamboo paper covering associated stiffening structure Another factor undoubtedly nitrate dope does continue tighten weeks end newer butyrate dopes Butyrate dope has around since mid 1950s forced use glow plug came along recall such attempts fuel-proof finishes STA HEP Still another possible reason use /s X s such may degen eration quality balsa wood per haps stuff didnt stress relieve much back final possibility course might designers didnt know better What ever reason rea sons fact has become glaringly appar ent have gotten RC assist wings have strong tendency fall off inopportune times As revive grand old designs 40 years ago add radio cover wings plastic film submit flight stresses designers considered crash situation apparent modi fication wing structure para mount importance have never thrill losing wing panel spiralling out boomer dont feel left out Ive done often enough Id like share what Ive found reliable solution simple build adds tre mendous strength resists warping well fitting framework SAM preamble Borrowing heavily George Fuller England free flight Dixielander series has published kitted under disguises Willie Actor ever stirring lessons learned RC glider people generally stealing anything useful Ive using four spar shear-web wing exclusively sev eral years concept appears February 1978 93 fidtIi P R 0 D U CT S N C SVILLE ROAD OW GROVE PA 19090 659-3900 TI SUPERSTAR OF STARTERS Sales zooming past 100000 starter thats turned whole world Has higher torque & RPMs heavy duty long life motor instant-on strip switch safety hand guard 2-year guarantee PROP-LOC AT NEW LOW PRICES Hi-tork spinner smoother idle Cone available 1 1 2 2/4 21/2 2 white black red Now 80c hardware $110 Two-piece aluminum spinner-ette available 5/16-24 1/4-28 6 mm 7 mm threads Now $110 complete
Edition: Model Aviation - 1978/02
Page Numbers: 29, 91, 92, 93
S Soaring U Dan Pruss LAST MONTH mention made Blame Rawdon San Fernando Val ley Silent Flyers attempt new type contest event picture measuring device printed month Blame points out device regular tripod simple sighting bar protractor tached photo describes well Blame went say actual measurement planes altitudes didnt pose problems diffi cult sight lower faster flying planes case credibility calculated altitudes great few problems apparent can worked out stemmed several planes approaching gate simultaneously simple communications system would solution since gate master angle measurers quite distance apart Blames system base 383 feet Last months column gave other details same club group originated Desert Dash cross-country racing comes variation themea desert goal return con test task simple Launch find lift within five minutes release begin flight goal 28 miles away return launch site out landing Barbara Henon reported able get four rounds each flier four chances make distance Rules simple flier finished course finisher would win finished best time would win After some luckless attempts light lift other fliers Rick Pearson Para gon completed course 56 miles 37 minutes 17 seconds As day wore lift got better Rich Harty Paragon beat corners Sports man Class 3345 Larry Pettyjohn flew course 2410 Expert class outdo Pearson Blame Rawdon Goose smoked course 22 minutes best time meet above again proves flexibility soaring enjoys task design types competition whether its club na tional level once plane shows up field stops show Usually planes unique design often possess outstanding finish Elmira meet past September Paul Weigland Rochester NY such plane Tol edo couple years back remember 16-foot beauty called Lamreht Thats thermal spelled backwards case missed Anyway Paul its designer builder finisher took honors year Paul showed up Elmira modified Aquila called Aquila 1000 modification didnt first appear drastic though finish did draw s attention what Paul done enlarge airfoil proportionately teninch chord 100-inch span gave bird 1000 sq area hence Conunued page 91 February 1978 29 Baline Rawdons altitude finder described last months column As Dan says picture explains itself tripod available rest consists card wood string tape Right Paul Weiglands Aquila 1000modifica tion 9- 10-in chord yielded 1000 sq area Below Wing flaps added kept normal chord thickness wing roots Below R simple yet elegant method transitioning stock fuselage en larged wing chord Text supplies details ered evenly dry about 30 minutes spray couple wet coats clear acrylic Reduce acrylic mater ials will spray no orange peel Allow dry overnight tape up multi-color schemes rea son clear after base color prevent kinds finger marks getting porous paint masking multi-colors make sure have no spot can leak overspray onto base color t coats multi-colors should sprayed rather dry seal tape edges Allow multi-ctMors dry several hours before removing tape pulling back over itself Any feather edges paint left standing can removed scraping light ly single-edged razor blade should done carefully Now make sure edges sharp no overspray present overspray detected sand #600 grit wet wipe dry Now wipe entire helicopter Preps-Sol DuPont grease wax re mover remove finger marks Using tac rag remove lint dust Spray couple wet coats acrylic clear over painted surfaces Allow dry overnight Now sand paint edges smooth #600 grit wet wipe clean tac lint free Now comes hard partbut part will make helicopter beautiful durable Because Delthane difficult spray should practice some ob ject such old gallon paint can Mix up small quantity per instructions container practice spraying until get knack sprays like enamel flows after surface will run spray too wet will flow spray too dry sure wear pro tective mask Let tell againwear protective mask Delthane will cure overnight can safely handled 24 hours have used type finish years have won single best finish con test have ever entered except beaten plane painted another person beat own handiwork Oh well its fickle worldso what may want practice whole procedure old box board sheet metal until get hang great part Ditzler Acrylic Lacquer very forgiving mistakes dirt runs bugs can sanded out done over within minutes times gave full curing times need adhered repairs can done soon can touch paint usually just minutes Bill materials 1 gallon DuPont #3608 Thinner $350 1 pint DuPont Preps-Sol Cleaner $180 1 quart DuPont #808 oxide primer $450 1 roll 3/4-inch tape $200 1 roll 1/4-inch tape 85 1 roll 1/8-inch tape 85 1 Tac-Rag 60 1 pint color $350 ea 1 quart Ditzler Acrylic Clear $450 1 quart Ditzler Delthane & Hardener $750 minimals will enough several helicopters sure mix amount Delthane going use will cure up un usable Clean out spray gun after use lacquer thinner Cost-wise am sure will find economical other process will like results World-Wide RC Helicopter Symposium Because great manufac turers cannot come time planned symposium new date will have selected column will keep informed progress made flying trying hard enough Walt Schoonard 2080 Sharon Rd Winter Park FL 32789 RC Soaring/Pruss continued page 29 name Aquila 1000 So could use existing fuselage Paul maintained original root rib dimensions transitioned en larged section root next rib shown photos proFebruary 1978 91 Peflormance Flying . K & B 35cc 21 R/C ENGINE flying WORK HORSE its site no rugged werful dependable engine mpetitors its class size will know theyre up against winner Easy start Requires no break-in period Features incIude Efficient Muffler r 90 decibels Cylinder Piston Bearings nced By-Pass Port ing y Carburetor Density Aluminum Die Casting YOU CANT GET ANY LIGHTER SMALLER OR SIMPLER THAN THIS pulse commander quality American made rudder-only pulse proportional radio system offers lightest weight smallest size flute pack available Only 21 oz total airborne weight Baby system Rudder-only flying perfect way start RIC also provides relaxing changeof-pace experienced flyer units come completely wired tested guaranteed ni-cd batteries charger furnished flute pack Transmitter battery included Eveready No 276 9V dry battery equivalent required systems $75 complete Available 72080 72160 72240 72320 72400 7296075640 531 532 533 534 535 MHz Ham license required 53MHz frequencies BABY 10G75 Airborne weight21 oz 595 g 010 Pee Wee 020 planes up 36 span STANDARD 10076 Airborne weight31 oz 88 g Babe Bee end slow flying Tee Dee 049 planes up 42 span BABY TWIN 10075T STOMPER 10077 Airborne weight23 oz 652 g Airborne weight35 oz 992 g 020 slow flying 049 planes hot 049 slow flying 15 ships up 40 span NOTE 27 MHz systems still available Baby 10015 $6995 Baby Twin lOGiST $7295 Standard 10016 $7195 Stomper 10017 $7495 Phase send complete utalog Enclosed isis refunded NAPIE fifor 1st cIa mail ..ling otherADDRESS duced favorable aesthetic effect al lowed stock wing interchangeability stock fuselage Flaps added shown actu ated Ia pull system provided dial cord spoiler systems cord instead being connected directly flaps via 90-degree bend through tubing spoiler system runs parallel through wing arm 90-degree bellcrank 1/16-in wire pushrod run bellcranks other arm flaps bellcrank mounted plywood sheet between ribs spring loaded preset down position adjustable stop Flap travel few degrees either side neutral flaps used primarily effect slight camber change Paul claims flap flutter has problem would think might exist nonrigid system However atten tion should kept regard battery drain because such drive system award winning finishes Paul uses acrylic lacquer fuselage flying surfaces Monokoted trim also Monokote shadowed letter effect letters numbers cut adhesive backed material stuck black Monokote trimsheet desired outline cut out finished pattern applied wings tail whatevera eye-pleasing effect Two new products long overdue come Sailplane Accessory Co Box 412 Bardonia NY 10954 wing support system incorporates two spring steel blades method isnt new Some imported kits have system years Jerry Mrlik has used Astro-Jeffs just long However besides blades Sailplane Accessory Co provides beautifully molded set wing channels also center vee section latter wasnt available imports blade measures 7 X / inches wing blade box 53/4 X 5/s vee block measures four inches long 1/ deep channels vee section inch thick complete assembly sells $750 Advantages such wing mounting system includes better launches because less wing flex Also such mount short wing guides can used near trailing edge allows wing flex forward event sudden stopping has saved few Astro-Jeff wings other product same com pany called E-Z Spoiler Linkage Again system isnt new is now available USA components beautifully accurately molded provide direct positive link fuselage wing package says spoiler linkage hardware also could used actuating ailerons flaps assembly sells $350 FAI Report Members National Soaring Society again coordinate planning FAI team selection program 1978 possible world championship 1979 accord current FAI practice scheduling world championships particular category every-other-year basis Thus 1979 event earliest another RC Soaring World Cham pionships can held NSS president Dr Stan Pfost appointed Ray Marvin head up coordination effort conjunction AMA Ray ad vises program expected similar Jim Simpson adminis tered 1976 means series quar ter finals possibly April through June semi-finals July finals would September Details must first approved participants pro gram Sites will announced later WINGS Women National Gliding Society announced 1977 competition winner Taking four best contests out six scoring Joan Nolte tops Joan wife latest fourth LSF level V Neil Nolte case wondering depart ment annual pilgrimage Cumber land Md year success gourmets point view nual post-contest-season get-together 92 Model Aviation [ME I/C Un BOX 511E HIGGINSVILLE MO fog/rainout year no-contest no-pressure event usually brings out dif ferent types planes usually associ ated contest circuit year no different strictly hangar fly ing Weather kept us close fire Dave Corven did manage 25-minute flightonly because got up before breakfast rest Detroit contin gent smarter noon Saturday clans Detroit Pennsylvania fondue pots going homemade wine sausage laid out does say 10-minute maxes can fun Let rain Saturday evening Don Clark DCRC coordinates annually Cum berland Aero Modeling Society nounced banquet no change schedule next year So circle Nov 4 5 1978 fun soaring week-end whatever weather Dan Pruss Rt 2 Box 490 Plainfield IL 60544 R C Old-Timers/Mathews continued page 30 car others flying fre quency wait got model down staying off controls stalled did spin due wash-out have also gone back placing name phone number models P&W ribs Gene Walloch producing wing stab rib kits 15 old-timer de signs really required build kits plans strip wood Genes line-up includes such favor ites Scientific Mercury Comet Sailplane original Berkley Buc caneer wood quality good band-sawing requires little sanding accurate Send SSAE P&W Model Service PO Box 925 Monrovia CA 91016 complete list spinning Webs Such majority old-timer designs use wing spars con siderable depth relative airfoil Ex ceptions exist course notably multi-spar approach Chet Lanzo common practice use two deep spars bottom side top trend may have associ ated wide use silk double layers bamboo paper covering associated stiffening structure Another factor undoubtedly nitrate dope does continue tighten weeks end newer butyrate dopes Butyrate dope has around since mid 1950s forced use glow plug came along recall such attempts fuel-proof finishes STA HEP Still another possible reason use /s X s such may degen eration quality balsa wood per haps stuff didnt stress relieve much back final possibility course might designers didnt know better What ever reason rea sons fact has become glaringly appar ent have gotten RC assist wings have strong tendency fall off inopportune times As revive grand old designs 40 years ago add radio cover wings plastic film submit flight stresses designers considered crash situation apparent modi fication wing structure para mount importance have never thrill losing wing panel spiralling out boomer dont feel left out Ive done often enough Id like share what Ive found reliable solution simple build adds tre mendous strength resists warping well fitting framework SAM preamble Borrowing heavily George Fuller England free flight Dixielander series has published kitted under disguises Willie Actor ever stirring lessons learned RC glider people generally stealing anything useful Ive using four spar shear-web wing exclusively sev eral years concept appears February 1978 93 fidtIi P R 0 D U CT S N C SVILLE ROAD OW GROVE PA 19090 659-3900 TI SUPERSTAR OF STARTERS Sales zooming past 100000 starter thats turned whole world Has higher torque & RPMs heavy duty long life motor instant-on strip switch safety hand guard 2-year guarantee PROP-LOC AT NEW LOW PRICES Hi-tork spinner smoother idle Cone available 1 1 2 2/4 21/2 2 white black red Now 80c hardware $110 Two-piece aluminum spinner-ette available 5/16-24 1/4-28 6 mm 7 mm threads Now $110 complete
Edition: Model Aviation - 1978/02
Page Numbers: 29, 91, 92, 93
S Soaring U Dan Pruss LAST MONTH mention made Blame Rawdon San Fernando Val ley Silent Flyers attempt new type contest event picture measuring device printed month Blame points out device regular tripod simple sighting bar protractor tached photo describes well Blame went say actual measurement planes altitudes didnt pose problems diffi cult sight lower faster flying planes case credibility calculated altitudes great few problems apparent can worked out stemmed several planes approaching gate simultaneously simple communications system would solution since gate master angle measurers quite distance apart Blames system base 383 feet Last months column gave other details same club group originated Desert Dash cross-country racing comes variation themea desert goal return con test task simple Launch find lift within five minutes release begin flight goal 28 miles away return launch site out landing Barbara Henon reported able get four rounds each flier four chances make distance Rules simple flier finished course finisher would win finished best time would win After some luckless attempts light lift other fliers Rick Pearson Para gon completed course 56 miles 37 minutes 17 seconds As day wore lift got better Rich Harty Paragon beat corners Sports man Class 3345 Larry Pettyjohn flew course 2410 Expert class outdo Pearson Blame Rawdon Goose smoked course 22 minutes best time meet above again proves flexibility soaring enjoys task design types competition whether its club na tional level once plane shows up field stops show Usually planes unique design often possess outstanding finish Elmira meet past September Paul Weigland Rochester NY such plane Tol edo couple years back remember 16-foot beauty called Lamreht Thats thermal spelled backwards case missed Anyway Paul its designer builder finisher took honors year Paul showed up Elmira modified Aquila called Aquila 1000 modification didnt first appear drastic though finish did draw s attention what Paul done enlarge airfoil proportionately teninch chord 100-inch span gave bird 1000 sq area hence Conunued page 91 February 1978 29 Baline Rawdons altitude finder described last months column As Dan says picture explains itself tripod available rest consists card wood string tape Right Paul Weiglands Aquila 1000modifica tion 9- 10-in chord yielded 1000 sq area Below Wing flaps added kept normal chord thickness wing roots Below R simple yet elegant method transitioning stock fuselage en larged wing chord Text supplies details ered evenly dry about 30 minutes spray couple wet coats clear acrylic Reduce acrylic mater ials will spray no orange peel Allow dry overnight tape up multi-color schemes rea son clear after base color prevent kinds finger marks getting porous paint masking multi-colors make sure have no spot can leak overspray onto base color t coats multi-colors should sprayed rather dry seal tape edges Allow multi-ctMors dry several hours before removing tape pulling back over itself Any feather edges paint left standing can removed scraping light ly single-edged razor blade should done carefully Now make sure edges sharp no overspray present overspray detected sand #600 grit wet wipe dry Now wipe entire helicopter Preps-Sol DuPont grease wax re mover remove finger marks Using tac rag remove lint dust Spray couple wet coats acrylic clear over painted surfaces Allow dry overnight Now sand paint edges smooth #600 grit wet wipe clean tac lint free Now comes hard partbut part will make helicopter beautiful durable Because Delthane difficult spray should practice some ob ject such old gallon paint can Mix up small quantity per instructions container practice spraying until get knack sprays like enamel flows after surface will run spray too wet will flow spray too dry sure wear pro tective mask Let tell againwear protective mask Delthane will cure overnight can safely handled 24 hours have used type finish years have won single best finish con test have ever entered except beaten plane painted another person beat own handiwork Oh well its fickle worldso what may want practice whole procedure old box board sheet metal until get hang great part Ditzler Acrylic Lacquer very forgiving mistakes dirt runs bugs can sanded out done over within minutes times gave full curing times need adhered repairs can done soon can touch paint usually just minutes Bill materials 1 gallon DuPont #3608 Thinner $350 1 pint DuPont Preps-Sol Cleaner $180 1 quart DuPont #808 oxide primer $450 1 roll 3/4-inch tape $200 1 roll 1/4-inch tape 85 1 roll 1/8-inch tape 85 1 Tac-Rag 60 1 pint color $350 ea 1 quart Ditzler Acrylic Clear $450 1 quart Ditzler Delthane & Hardener $750 minimals will enough several helicopters sure mix amount Delthane going use will cure up un usable Clean out spray gun after use lacquer thinner Cost-wise am sure will find economical other process will like results World-Wide RC Helicopter Symposium Because great manufac turers cannot come time planned symposium new date will have selected column will keep informed progress made flying trying hard enough Walt Schoonard 2080 Sharon Rd Winter Park FL 32789 RC Soaring/Pruss continued page 29 name Aquila 1000 So could use existing fuselage Paul maintained original root rib dimensions transitioned en larged section root next rib shown photos proFebruary 1978 91 Peflormance Flying . K & B 35cc 21 R/C ENGINE flying WORK HORSE its site no rugged werful dependable engine mpetitors its class size will know theyre up against winner Easy start Requires no break-in period Features incIude Efficient Muffler r 90 decibels Cylinder Piston Bearings nced By-Pass Port ing y Carburetor Density Aluminum Die Casting YOU CANT GET ANY LIGHTER SMALLER OR SIMPLER THAN THIS pulse commander quality American made rudder-only pulse proportional radio system offers lightest weight smallest size flute pack available Only 21 oz total airborne weight Baby system Rudder-only flying perfect way start RIC also provides relaxing changeof-pace experienced flyer units come completely wired tested guaranteed ni-cd batteries charger furnished flute pack Transmitter battery included Eveready No 276 9V dry battery equivalent required systems $75 complete Available 72080 72160 72240 72320 72400 7296075640 531 532 533 534 535 MHz Ham license required 53MHz frequencies BABY 10G75 Airborne weight21 oz 595 g 010 Pee Wee 020 planes up 36 span STANDARD 10076 Airborne weight31 oz 88 g Babe Bee end slow flying Tee Dee 049 planes up 42 span BABY TWIN 10075T STOMPER 10077 Airborne weight23 oz 652 g Airborne weight35 oz 992 g 020 slow flying 049 planes hot 049 slow flying 15 ships up 40 span NOTE 27 MHz systems still available Baby 10015 $6995 Baby Twin lOGiST $7295 Standard 10016 $7195 Stomper 10017 $7495 Phase send complete utalog Enclosed isis refunded NAPIE fifor 1st cIa mail ..ling otherADDRESS duced favorable aesthetic effect al lowed stock wing interchangeability stock fuselage Flaps added shown actu ated Ia pull system provided dial cord spoiler systems cord instead being connected directly flaps via 90-degree bend through tubing spoiler system runs parallel through wing arm 90-degree bellcrank 1/16-in wire pushrod run bellcranks other arm flaps bellcrank mounted plywood sheet between ribs spring loaded preset down position adjustable stop Flap travel few degrees either side neutral flaps used primarily effect slight camber change Paul claims flap flutter has problem would think might exist nonrigid system However atten tion should kept regard battery drain because such drive system award winning finishes Paul uses acrylic lacquer fuselage flying surfaces Monokoted trim also Monokote shadowed letter effect letters numbers cut adhesive backed material stuck black Monokote trimsheet desired outline cut out finished pattern applied wings tail whatevera eye-pleasing effect Two new products long overdue come Sailplane Accessory Co Box 412 Bardonia NY 10954 wing support system incorporates two spring steel blades method isnt new Some imported kits have system years Jerry Mrlik has used Astro-Jeffs just long However besides blades Sailplane Accessory Co provides beautifully molded set wing channels also center vee section latter wasnt available imports blade measures 7 X / inches wing blade box 53/4 X 5/s vee block measures four inches long 1/ deep channels vee section inch thick complete assembly sells $750 Advantages such wing mounting system includes better launches because less wing flex Also such mount short wing guides can used near trailing edge allows wing flex forward event sudden stopping has saved few Astro-Jeff wings other product same com pany called E-Z Spoiler Linkage Again system isnt new is now available USA components beautifully accurately molded provide direct positive link fuselage wing package says spoiler linkage hardware also could used actuating ailerons flaps assembly sells $350 FAI Report Members National Soaring Society again coordinate planning FAI team selection program 1978 possible world championship 1979 accord current FAI practice scheduling world championships particular category every-other-year basis Thus 1979 event earliest another RC Soaring World Cham pionships can held NSS president Dr Stan Pfost appointed Ray Marvin head up coordination effort conjunction AMA Ray ad vises program expected similar Jim Simpson adminis tered 1976 means series quar ter finals possibly April through June semi-finals July finals would September Details must first approved participants pro gram Sites will announced later WINGS Women National Gliding Society announced 1977 competition winner Taking four best contests out six scoring Joan Nolte tops Joan wife latest fourth LSF level V Neil Nolte case wondering depart ment annual pilgrimage Cumber land Md year success gourmets point view nual post-contest-season get-together 92 Model Aviation [ME I/C Un BOX 511E HIGGINSVILLE MO fog/rainout year no-contest no-pressure event usually brings out dif ferent types planes usually associ ated contest circuit year no different strictly hangar fly ing Weather kept us close fire Dave Corven did manage 25-minute flightonly because got up before breakfast rest Detroit contin gent smarter noon Saturday clans Detroit Pennsylvania fondue pots going homemade wine sausage laid out does say 10-minute maxes can fun Let rain Saturday evening Don Clark DCRC coordinates annually Cum berland Aero Modeling Society nounced banquet no change schedule next year So circle Nov 4 5 1978 fun soaring week-end whatever weather Dan Pruss Rt 2 Box 490 Plainfield IL 60544 R C Old-Timers/Mathews continued page 30 car others flying fre quency wait got model down staying off controls stalled did spin due wash-out have also gone back placing name phone number models P&W ribs Gene Walloch producing wing stab rib kits 15 old-timer de signs really required build kits plans strip wood Genes line-up includes such favor ites Scientific Mercury Comet Sailplane original Berkley Buc caneer wood quality good band-sawing requires little sanding accurate Send SSAE P&W Model Service PO Box 925 Monrovia CA 91016 complete list spinning Webs Such majority old-timer designs use wing spars con siderable depth relative airfoil Ex ceptions exist course notably multi-spar approach Chet Lanzo common practice use two deep spars bottom side top trend may have associ ated wide use silk double layers bamboo paper covering associated stiffening structure Another factor undoubtedly nitrate dope does continue tighten weeks end newer butyrate dopes Butyrate dope has around since mid 1950s forced use glow plug came along recall such attempts fuel-proof finishes STA HEP Still another possible reason use /s X s such may degen eration quality balsa wood per haps stuff didnt stress relieve much back final possibility course might designers didnt know better What ever reason rea sons fact has become glaringly appar ent have gotten RC assist wings have strong tendency fall off inopportune times As revive grand old designs 40 years ago add radio cover wings plastic film submit flight stresses designers considered crash situation apparent modi fication wing structure para mount importance have never thrill losing wing panel spiralling out boomer dont feel left out Ive done often enough Id like share what Ive found reliable solution simple build adds tre mendous strength resists warping well fitting framework SAM preamble Borrowing heavily George Fuller England free flight Dixielander series has published kitted under disguises Willie Actor ever stirring lessons learned RC glider people generally stealing anything useful Ive using four spar shear-web wing exclusively sev eral years concept appears February 1978 93 fidtIi P R 0 D U CT S N C SVILLE ROAD OW GROVE PA 19090 659-3900 TI SUPERSTAR OF STARTERS Sales zooming past 100000 starter thats turned whole world Has higher torque & RPMs heavy duty long life motor instant-on strip switch safety hand guard 2-year guarantee PROP-LOC AT NEW LOW PRICES Hi-tork spinner smoother idle Cone available 1 1 2 2/4 21/2 2 white black red Now 80c hardware $110 Two-piece aluminum spinner-ette available 5/16-24 1/4-28 6 mm 7 mm threads Now $110 complete
Edition: Model Aviation - 1978/02
Page Numbers: 29, 91, 92, 93
S Soaring U Dan Pruss LAST MONTH mention made Blame Rawdon San Fernando Val ley Silent Flyers attempt new type contest event picture measuring device printed month Blame points out device regular tripod simple sighting bar protractor tached photo describes well Blame went say actual measurement planes altitudes didnt pose problems diffi cult sight lower faster flying planes case credibility calculated altitudes great few problems apparent can worked out stemmed several planes approaching gate simultaneously simple communications system would solution since gate master angle measurers quite distance apart Blames system base 383 feet Last months column gave other details same club group originated Desert Dash cross-country racing comes variation themea desert goal return con test task simple Launch find lift within five minutes release begin flight goal 28 miles away return launch site out landing Barbara Henon reported able get four rounds each flier four chances make distance Rules simple flier finished course finisher would win finished best time would win After some luckless attempts light lift other fliers Rick Pearson Para gon completed course 56 miles 37 minutes 17 seconds As day wore lift got better Rich Harty Paragon beat corners Sports man Class 3345 Larry Pettyjohn flew course 2410 Expert class outdo Pearson Blame Rawdon Goose smoked course 22 minutes best time meet above again proves flexibility soaring enjoys task design types competition whether its club na tional level once plane shows up field stops show Usually planes unique design often possess outstanding finish Elmira meet past September Paul Weigland Rochester NY such plane Tol edo couple years back remember 16-foot beauty called Lamreht Thats thermal spelled backwards case missed Anyway Paul its designer builder finisher took honors year Paul showed up Elmira modified Aquila called Aquila 1000 modification didnt first appear drastic though finish did draw s attention what Paul done enlarge airfoil proportionately teninch chord 100-inch span gave bird 1000 sq area hence Conunued page 91 February 1978 29 Baline Rawdons altitude finder described last months column As Dan says picture explains itself tripod available rest consists card wood string tape Right Paul Weiglands Aquila 1000modifica tion 9- 10-in chord yielded 1000 sq area Below Wing flaps added kept normal chord thickness wing roots Below R simple yet elegant method transitioning stock fuselage en larged wing chord Text supplies details ered evenly dry about 30 minutes spray couple wet coats clear acrylic Reduce acrylic mater ials will spray no orange peel Allow dry overnight tape up multi-color schemes rea son clear after base color prevent kinds finger marks getting porous paint masking multi-colors make sure have no spot can leak overspray onto base color t coats multi-colors should sprayed rather dry seal tape edges Allow multi-ctMors dry several hours before removing tape pulling back over itself Any feather edges paint left standing can removed scraping light ly single-edged razor blade should done carefully Now make sure edges sharp no overspray present overspray detected sand #600 grit wet wipe dry Now wipe entire helicopter Preps-Sol DuPont grease wax re mover remove finger marks Using tac rag remove lint dust Spray couple wet coats acrylic clear over painted surfaces Allow dry overnight Now sand paint edges smooth #600 grit wet wipe clean tac lint free Now comes hard partbut part will make helicopter beautiful durable Because Delthane difficult spray should practice some ob ject such old gallon paint can Mix up small quantity per instructions container practice spraying until get knack sprays like enamel flows after surface will run spray too wet will flow spray too dry sure wear pro tective mask Let tell againwear protective mask Delthane will cure overnight can safely handled 24 hours have used type finish years have won single best finish con test have ever entered except beaten plane painted another person beat own handiwork Oh well its fickle worldso what may want practice whole procedure old box board sheet metal until get hang great part Ditzler Acrylic Lacquer very forgiving mistakes dirt runs bugs can sanded out done over within minutes times gave full curing times need adhered repairs can done soon can touch paint usually just minutes Bill materials 1 gallon DuPont #3608 Thinner $350 1 pint DuPont Preps-Sol Cleaner $180 1 quart DuPont #808 oxide primer $450 1 roll 3/4-inch tape $200 1 roll 1/4-inch tape 85 1 roll 1/8-inch tape 85 1 Tac-Rag 60 1 pint color $350 ea 1 quart Ditzler Acrylic Clear $450 1 quart Ditzler Delthane & Hardener $750 minimals will enough several helicopters sure mix amount Delthane going use will cure up un usable Clean out spray gun after use lacquer thinner Cost-wise am sure will find economical other process will like results World-Wide RC Helicopter Symposium Because great manufac turers cannot come time planned symposium new date will have selected column will keep informed progress made flying trying hard enough Walt Schoonard 2080 Sharon Rd Winter Park FL 32789 RC Soaring/Pruss continued page 29 name Aquila 1000 So could use existing fuselage Paul maintained original root rib dimensions transitioned en larged section root next rib shown photos proFebruary 1978 91 Peflormance Flying . K & B 35cc 21 R/C ENGINE flying WORK HORSE its site no rugged werful dependable engine mpetitors its class size will know theyre up against winner Easy start Requires no break-in period Features incIude Efficient Muffler r 90 decibels Cylinder Piston Bearings nced By-Pass Port ing y Carburetor Density Aluminum Die Casting YOU CANT GET ANY LIGHTER SMALLER OR SIMPLER THAN THIS pulse commander quality American made rudder-only pulse proportional radio system offers lightest weight smallest size flute pack available Only 21 oz total airborne weight Baby system Rudder-only flying perfect way start RIC also provides relaxing changeof-pace experienced flyer units come completely wired tested guaranteed ni-cd batteries charger furnished flute pack Transmitter battery included Eveready No 276 9V dry battery equivalent required systems $75 complete Available 72080 72160 72240 72320 72400 7296075640 531 532 533 534 535 MHz Ham license required 53MHz frequencies BABY 10G75 Airborne weight21 oz 595 g 010 Pee Wee 020 planes up 36 span STANDARD 10076 Airborne weight31 oz 88 g Babe Bee end slow flying Tee Dee 049 planes up 42 span BABY TWIN 10075T STOMPER 10077 Airborne weight23 oz 652 g Airborne weight35 oz 992 g 020 slow flying 049 planes hot 049 slow flying 15 ships up 40 span NOTE 27 MHz systems still available Baby 10015 $6995 Baby Twin lOGiST $7295 Standard 10016 $7195 Stomper 10017 $7495 Phase send complete utalog Enclosed isis refunded NAPIE fifor 1st cIa mail ..ling otherADDRESS duced favorable aesthetic effect al lowed stock wing interchangeability stock fuselage Flaps added shown actu ated Ia pull system provided dial cord spoiler systems cord instead being connected directly flaps via 90-degree bend through tubing spoiler system runs parallel through wing arm 90-degree bellcrank 1/16-in wire pushrod run bellcranks other arm flaps bellcrank mounted plywood sheet between ribs spring loaded preset down position adjustable stop Flap travel few degrees either side neutral flaps used primarily effect slight camber change Paul claims flap flutter has problem would think might exist nonrigid system However atten tion should kept regard battery drain because such drive system award winning finishes Paul uses acrylic lacquer fuselage flying surfaces Monokoted trim also Monokote shadowed letter effect letters numbers cut adhesive backed material stuck black Monokote trimsheet desired outline cut out finished pattern applied wings tail whatevera eye-pleasing effect Two new products long overdue come Sailplane Accessory Co Box 412 Bardonia NY 10954 wing support system incorporates two spring steel blades method isnt new Some imported kits have system years Jerry Mrlik has used Astro-Jeffs just long However besides blades Sailplane Accessory Co provides beautifully molded set wing channels also center vee section latter wasnt available imports blade measures 7 X / inches wing blade box 53/4 X 5/s vee block measures four inches long 1/ deep channels vee section inch thick complete assembly sells $750 Advantages such wing mounting system includes better launches because less wing flex Also such mount short wing guides can used near trailing edge allows wing flex forward event sudden stopping has saved few Astro-Jeff wings other product same com pany called E-Z Spoiler Linkage Again system isnt new is now available USA components beautifully accurately molded provide direct positive link fuselage wing package says spoiler linkage hardware also could used actuating ailerons flaps assembly sells $350 FAI Report Members National Soaring Society again coordinate planning FAI team selection program 1978 possible world championship 1979 accord current FAI practice scheduling world championships particular category every-other-year basis Thus 1979 event earliest another RC Soaring World Cham pionships can held NSS president Dr Stan Pfost appointed Ray Marvin head up coordination effort conjunction AMA Ray ad vises program expected similar Jim Simpson adminis tered 1976 means series quar ter finals possibly April through June semi-finals July finals would September Details must first approved participants pro gram Sites will announced later WINGS Women National Gliding Society announced 1977 competition winner Taking four best contests out six scoring Joan Nolte tops Joan wife latest fourth LSF level V Neil Nolte case wondering depart ment annual pilgrimage Cumber land Md year success gourmets point view nual post-contest-season get-together 92 Model Aviation [ME I/C Un BOX 511E HIGGINSVILLE MO fog/rainout year no-contest no-pressure event usually brings out dif ferent types planes usually associ ated contest circuit year no different strictly hangar fly ing Weather kept us close fire Dave Corven did manage 25-minute flightonly because got up before breakfast rest Detroit contin gent smarter noon Saturday clans Detroit Pennsylvania fondue pots going homemade wine sausage laid out does say 10-minute maxes can fun Let rain Saturday evening Don Clark DCRC coordinates annually Cum berland Aero Modeling Society nounced banquet no change schedule next year So circle Nov 4 5 1978 fun soaring week-end whatever weather Dan Pruss Rt 2 Box 490 Plainfield IL 60544 R C Old-Timers/Mathews continued page 30 car others flying fre quency wait got model down staying off controls stalled did spin due wash-out have also gone back placing name phone number models P&W ribs Gene Walloch producing wing stab rib kits 15 old-timer de signs really required build kits plans strip wood Genes line-up includes such favor ites Scientific Mercury Comet Sailplane original Berkley Buc caneer wood quality good band-sawing requires little sanding accurate Send SSAE P&W Model Service PO Box 925 Monrovia CA 91016 complete list spinning Webs Such majority old-timer designs use wing spars con siderable depth relative airfoil Ex ceptions exist course notably multi-spar approach Chet Lanzo common practice use two deep spars bottom side top trend may have associ ated wide use silk double layers bamboo paper covering associated stiffening structure Another factor undoubtedly nitrate dope does continue tighten weeks end newer butyrate dopes Butyrate dope has around since mid 1950s forced use glow plug came along recall such attempts fuel-proof finishes STA HEP Still another possible reason use /s X s such may degen eration quality balsa wood per haps stuff didnt stress relieve much back final possibility course might designers didnt know better What ever reason rea sons fact has become glaringly appar ent have gotten RC assist wings have strong tendency fall off inopportune times As revive grand old designs 40 years ago add radio cover wings plastic film submit flight stresses designers considered crash situation apparent modi fication wing structure para mount importance have never thrill losing wing panel spiralling out boomer dont feel left out Ive done often enough Id like share what Ive found reliable solution simple build adds tre mendous strength resists warping well fitting framework SAM preamble Borrowing heavily George Fuller England free flight Dixielander series has published kitted under disguises Willie Actor ever stirring lessons learned RC glider people generally stealing anything useful Ive using four spar shear-web wing exclusively sev eral years concept appears February 1978 93 fidtIi P R 0 D U CT S N C SVILLE ROAD OW GROVE PA 19090 659-3900 TI SUPERSTAR OF STARTERS Sales zooming past 100000 starter thats turned whole world Has higher torque & RPMs heavy duty long life motor instant-on strip switch safety hand guard 2-year guarantee PROP-LOC AT NEW LOW PRICES Hi-tork spinner smoother idle Cone available 1 1 2 2/4 21/2 2 white black red Now 80c hardware $110 Two-piece aluminum spinner-ette available 5/16-24 1/4-28 6 mm 7 mm threads Now $110 complete