Radio Control Soaring Dan Pruss ONE popular large large mean larger other kits Sailplanes Sagitta-XC 174-in model its four-piece wing builders delight best tradition Airtronics late Lee Renaud parts machine-cut fit nearly zero tolerances Unfortunately 500 kits produced quickly bought up mod elers interested cross-country flying Over seven years model graced skies modelersbeing modelerstried different modifications improve original version Some successful some did make changes worthy note Warren Plohr Ohio recently past-president League Silent Flight fortunate enough find kit still available Airtronics out stock grab pure joy building itor modify will discussed Second-best approach get set plans start scratch Although tout precision-like qualities kit Eppler 205 airfoil modified somewhat So want 205 alreadybuilt wing can modified new ribs can cut Warren Plohr advises wing already built laminate additional A-in sheet balsa top bottom forward main spar added balsa can shaped form true Eppler 205 wing section plywood root cap ribs nearly true 205 sections building scratch use plywood section templates main panels During wing modification Warren re placed wing joiner 1-in steel rod same length might wish go steelblade-in-a-box route although its necessary will give additional strength fuselage/wing attach points however Next strengthen main spar shear web bing near root using carbon fiber Strength en lower spar carbon fiber between spar lamination Change wing tip shape remove few square inches area will added horizontal tail Upsweeping tip section cuts down overall projected span has affect aerodynamically will ex plained later also shortens wing enough two right-hand panels two left-hand panels can kept joined taped easier transporting quicker assembly field horizontal stab completely modified Warren used NACA 0009 airfoil section Construction techniques similar building Two-Meter wing Spars x A-in spruce effect D-tube construction forward section covered /,-in balsa Cap strips x used rest rib sections Keep materials light 39A-in stab can kept under five ounces arrive stab span yours might vary depending wing tip size amount dihedral carefully measure projected wing area Remember model size bumping maximum FAIl AMA limitations maximum horizontal fly ing surface area Maximum allowed 2325 square inches Warren took wing area sub tracted max allowed used remainder horizontal stabilizer Perhaps back-door approach results have gratifying Anyway came up sta bilizer span 39% root chord 9% tip 4 better stab bearing brass tube inch long projects out vertical fin recessed stab might want refer technique described March 1986 column using piece printed circuit modelers iamentthatAirtronlcs stopped production Sagitta-XC kit Cross-countryfiiers love Thisone isthe handiworkof Paui Jones iowa oft nose contains Front Rear iead baiiast battery pack rudder eievator servos spoiier servo two switches RC system other Thermic Sniffler Thermic Sniffier receiver under switch box peopie R L R Terry Edmonds John Thomas Paui Jones Lee Neison team piaced second recent Cedar Rapids IA contest Ohios Warren Piohr modified Sagltta-XC L changes imperceptibie such iarge modei Another photo plane appeared page 48 February 1986 coiumn foiks down San Diego CA fiying Quattros R Thisgroup has onedesign effort Quattro fine German kit detaiis column Fiier fourth left MAs own Larry Joily 46 Model Aviation board attachments such Fuselage modifications include splicing 64-in section added longitudinal stability good insurance flying high far away nose lengthened 14 minimize addition lead ballast due longer tail moment arm should noted whether new fuselage sides cut splice made same height maintained front rear original kit part Planform aft plywood sides straight line taper rudder post nose extension form block hollowed out accommodate six ounces lead shot epoxy mix space behind nose block first bulkhead holds four teen ounces solid lead behind pack 12 Ah Ni-Cd cells mounted inline Warren flies bird 30-33% CG cross-country flying CG further aft recom mended thermal flying worth effort Consider Ohio team Jim Bohmer sticks has set two course records under 214 hours over SOARs Great Race course Thats 67 km 47 miles nonstop flying Yet Skip Miller first competition finish course us ing stock Sagitta-XC talking folks Airtronics assured will no rerun XC good chance plans construction booklet wing joiners will again made available Thats good news lot people Just receIved word Warren CaIdwell III Corpus Christi TX clubs second cross-country meet will held August 23 24 What makes event unique support receive US Navy Using practice airfield shut down weekends Corpus filers get permission use days Using basic F3H rules fly field five-kilo meter triangular course laid out using existing runways Four times around gives 20-km course Driving course step better fly ing through sparse countryside because vehicles road contestants Nice information check contest calendar Competition Newsletter sec tion Model Aviation tIne F3B scene theres least group taking pre-season seriously models year old have holding regi mented practices San Diego area picture shows left right Rick Schrameck Casey Goeller Roger Roth Larry Jolly Steve Neu Dave Hice picture Keith Finkenbiner planes Quattros product Germany Controls include ailerons flaps can mixed act full-span flaps separately flaps ailerons Wing con struction includes foam fiberglass carbon fiber mahogany veneer warrants wing display art gallery Workmanship superb Remember year US F3B team selection Please support program Good lift Dan Przsss 131 E Pennington Ln Plainfield IL 60544 Safe Flying Accident WHEN YOU FORGET OUR UNITS REMEMBER Wet Cell & Gelled Cell Batteries Completely automatic operation Connect forget Pays itself eries last two three times longer Two models fit size batteries REGULAR MODEL$3995 field kit smallPlus $2 S & H electric boat batteriesSpecify 612 24V HEAVY DUTY MODEL$4995 sport winch lerge boat aid Plus $2 SOS & H electric power charging batteries Specify 6 1 2V CaRa Products PO Box 221 Canton SD 57013 605-987-5924 SASE 0 nomson Ovate nqu es ri ed RC System NiCd Batteries chargers need age Cycler prevent memory Tester find bad cells Quick Charger 2 4 hours Trickle Charger safe level Field Fast Charger both Rs Tx Portable Charger inpet 1 20V 1 2V Multiple Charger up 3 Ta 5 Ra Completely Automatic STANDARD MODEL$179 Fits4ttVRaand96VTspacksPtusS5S&H Others available write call One-Speed Dremel Tool Full variable-speed operation Retains on-off switch inside case ForModel27Oor2ttOonlyPlusSi 505aM DETROIT EXPO VIII Al GREATER MICHIGAN MODELERS SHOW HOSTED BY INDIAN CITY RADIO CONTROL CLUB AUCTION RAFFLES REFRESHMENTS FREE PARKING BenjamIn F Yack Recnatlen Center 3131 Third Street Wyandotte Michigan August 16 & 171986 PLANES S TICS MANUFACTURERS STATIC DISPLAYS SWAP-SHOP Phone 313 295-0569 Vein Luedeman -25505 Chernick Taylor Michigan 48180 Models Easy Never Flew Well Skyboy Schweizer shown Skykid ultimate freeflight rubber powered flight secret success sturdy foam models BiMatic Bentoms ex clusive 21 gear box preassembled included model An ideal first flying model kids well old reliable serious freeflight modelers CALIFORNIA PO Box 1695 A4ODEL IMPORTSGarden Grove CA 92642 An exciting lineup CIL & RIC airplanes plus RIC off-road cars 1986 Enclose •stamped self-addressed envelope mw request FREE mini-catalog today rEZHYers cox 3AXDWO CESSNA 150 AEROBAT RIC P-39 AIRACOURA OFF-ROAD CARS ~t4COA/SANWACOX COYXITIIO CONTROLRADIOSELECTRIC POWERED TRIERLINE MODELSRIC PLANE COX HOBBIES INC 1525 East Warner Avenue Santa Ana CA 92705 NEW COSMIC WIND FuEL STARTER KITS July1986 47 Available hobby stores coast coast
Edition: Model Aviation - 1986/07
Page Numbers: 46, 47
Radio Control Soaring Dan Pruss ONE popular large large mean larger other kits Sailplanes Sagitta-XC 174-in model its four-piece wing builders delight best tradition Airtronics late Lee Renaud parts machine-cut fit nearly zero tolerances Unfortunately 500 kits produced quickly bought up mod elers interested cross-country flying Over seven years model graced skies modelersbeing modelerstried different modifications improve original version Some successful some did make changes worthy note Warren Plohr Ohio recently past-president League Silent Flight fortunate enough find kit still available Airtronics out stock grab pure joy building itor modify will discussed Second-best approach get set plans start scratch Although tout precision-like qualities kit Eppler 205 airfoil modified somewhat So want 205 alreadybuilt wing can modified new ribs can cut Warren Plohr advises wing already built laminate additional A-in sheet balsa top bottom forward main spar added balsa can shaped form true Eppler 205 wing section plywood root cap ribs nearly true 205 sections building scratch use plywood section templates main panels During wing modification Warren re placed wing joiner 1-in steel rod same length might wish go steelblade-in-a-box route although its necessary will give additional strength fuselage/wing attach points however Next strengthen main spar shear web bing near root using carbon fiber Strength en lower spar carbon fiber between spar lamination Change wing tip shape remove few square inches area will added horizontal tail Upsweeping tip section cuts down overall projected span has affect aerodynamically will ex plained later also shortens wing enough two right-hand panels two left-hand panels can kept joined taped easier transporting quicker assembly field horizontal stab completely modified Warren used NACA 0009 airfoil section Construction techniques similar building Two-Meter wing Spars x A-in spruce effect D-tube construction forward section covered /,-in balsa Cap strips x used rest rib sections Keep materials light 39A-in stab can kept under five ounces arrive stab span yours might vary depending wing tip size amount dihedral carefully measure projected wing area Remember model size bumping maximum FAIl AMA limitations maximum horizontal fly ing surface area Maximum allowed 2325 square inches Warren took wing area sub tracted max allowed used remainder horizontal stabilizer Perhaps back-door approach results have gratifying Anyway came up sta bilizer span 39% root chord 9% tip 4 better stab bearing brass tube inch long projects out vertical fin recessed stab might want refer technique described March 1986 column using piece printed circuit modelers iamentthatAirtronlcs stopped production Sagitta-XC kit Cross-countryfiiers love Thisone isthe handiworkof Paui Jones iowa oft nose contains Front Rear iead baiiast battery pack rudder eievator servos spoiier servo two switches RC system other Thermic Sniffler Thermic Sniffier receiver under switch box peopie R L R Terry Edmonds John Thomas Paui Jones Lee Neison team piaced second recent Cedar Rapids IA contest Ohios Warren Piohr modified Sagltta-XC L changes imperceptibie such iarge modei Another photo plane appeared page 48 February 1986 coiumn foiks down San Diego CA fiying Quattros R Thisgroup has onedesign effort Quattro fine German kit detaiis column Fiier fourth left MAs own Larry Joily 46 Model Aviation board attachments such Fuselage modifications include splicing 64-in section added longitudinal stability good insurance flying high far away nose lengthened 14 minimize addition lead ballast due longer tail moment arm should noted whether new fuselage sides cut splice made same height maintained front rear original kit part Planform aft plywood sides straight line taper rudder post nose extension form block hollowed out accommodate six ounces lead shot epoxy mix space behind nose block first bulkhead holds four teen ounces solid lead behind pack 12 Ah Ni-Cd cells mounted inline Warren flies bird 30-33% CG cross-country flying CG further aft recom mended thermal flying worth effort Consider Ohio team Jim Bohmer sticks has set two course records under 214 hours over SOARs Great Race course Thats 67 km 47 miles nonstop flying Yet Skip Miller first competition finish course us ing stock Sagitta-XC talking folks Airtronics assured will no rerun XC good chance plans construction booklet wing joiners will again made available Thats good news lot people Just receIved word Warren CaIdwell III Corpus Christi TX clubs second cross-country meet will held August 23 24 What makes event unique support receive US Navy Using practice airfield shut down weekends Corpus filers get permission use days Using basic F3H rules fly field five-kilo meter triangular course laid out using existing runways Four times around gives 20-km course Driving course step better fly ing through sparse countryside because vehicles road contestants Nice information check contest calendar Competition Newsletter sec tion Model Aviation tIne F3B scene theres least group taking pre-season seriously models year old have holding regi mented practices San Diego area picture shows left right Rick Schrameck Casey Goeller Roger Roth Larry Jolly Steve Neu Dave Hice picture Keith Finkenbiner planes Quattros product Germany Controls include ailerons flaps can mixed act full-span flaps separately flaps ailerons Wing con struction includes foam fiberglass carbon fiber mahogany veneer warrants wing display art gallery Workmanship superb Remember year US F3B team selection Please support program Good lift Dan Przsss 131 E Pennington Ln Plainfield IL 60544 Safe Flying Accident WHEN YOU FORGET OUR UNITS REMEMBER Wet Cell & Gelled Cell Batteries Completely automatic operation Connect forget Pays itself eries last two three times longer Two models fit size batteries REGULAR MODEL$3995 field kit smallPlus $2 S & H electric boat batteriesSpecify 612 24V HEAVY DUTY MODEL$4995 sport winch lerge boat aid Plus $2 SOS & H electric power charging batteries Specify 6 1 2V CaRa Products PO Box 221 Canton SD 57013 605-987-5924 SASE 0 nomson Ovate nqu es ri ed RC System NiCd Batteries chargers need age Cycler prevent memory Tester find bad cells Quick Charger 2 4 hours Trickle Charger safe level Field Fast Charger both Rs Tx Portable Charger inpet 1 20V 1 2V Multiple Charger up 3 Ta 5 Ra Completely Automatic STANDARD MODEL$179 Fits4ttVRaand96VTspacksPtusS5S&H Others available write call One-Speed Dremel Tool Full variable-speed operation Retains on-off switch inside case ForModel27Oor2ttOonlyPlusSi 505aM DETROIT EXPO VIII Al GREATER MICHIGAN MODELERS SHOW HOSTED BY INDIAN CITY RADIO CONTROL CLUB AUCTION RAFFLES REFRESHMENTS FREE PARKING BenjamIn F Yack Recnatlen Center 3131 Third Street Wyandotte Michigan August 16 & 171986 PLANES S TICS MANUFACTURERS STATIC DISPLAYS SWAP-SHOP Phone 313 295-0569 Vein Luedeman -25505 Chernick Taylor Michigan 48180 Models Easy Never Flew Well Skyboy Schweizer shown Skykid ultimate freeflight rubber powered flight secret success sturdy foam models BiMatic Bentoms ex clusive 21 gear box preassembled included model An ideal first flying model kids well old reliable serious freeflight modelers CALIFORNIA PO Box 1695 A4ODEL IMPORTSGarden Grove CA 92642 An exciting lineup CIL & RIC airplanes plus RIC off-road cars 1986 Enclose •stamped self-addressed envelope mw request FREE mini-catalog today rEZHYers cox 3AXDWO CESSNA 150 AEROBAT RIC P-39 AIRACOURA OFF-ROAD CARS ~t4COA/SANWACOX COYXITIIO CONTROLRADIOSELECTRIC POWERED TRIERLINE MODELSRIC PLANE COX HOBBIES INC 1525 East Warner Avenue Santa Ana CA 92705 NEW COSMIC WIND FuEL STARTER KITS July1986 47 Available hobby stores coast coast