Whats quick build flies 10 times higher house excites youngsters mighty midget PGM trainer thats what Larry Conover Full-size plans page 90 WANT have some high-flying fun scare puddin out strong-arm hand launch experts little catapult canard will outclimb outfly anything side Heaviside Layer So youd better have eyes like eagle legs like 1936 Olympic track star Jesse Owens Easily built evening cost about quarter mighty midget will amaze friends delight kids can still remember surprise first built flew off drawing board back high school years later decided try out group eight- 14-year-olds summer classes sponsored Silverthorne Recreation Department kids loved emtheyd built em flew like Star Wars fighter training model now step two PGM Project Grandpa Mentor educational program just another little throw-glider kids two keys success large box broad felt-tipped markers such Magic Marker pens center activity modeler/mentor student uses own creative ability put weird designs model parts before gluing done love Kids can color Construction simple having teacher/mentor close will ensure success kids can build gliders 10 easy steps Make patterns cutting out parts plan Use glue stick adhere file folder stock 2 /32 balsa sheet firm enough can cut parts sharp scissors Shape airfoils both wings before decorating plane marking pens can get square-edge wings performance will suffer use soft balsa model climbs like rocket needs strength 3 Color surfaces before gluing Model cement will disturb markers cant well markers over cement 4 Score bottom wings dihedral joints dead ball-point pen Crease-crack dihedral breaks top side wing down over sharp edge wooden block sure break joint apart Double-coat joint 82 Model Aviation Catapult Canard cc pair Catapult Canard-Is runi ns 6-in wingspan larger 8-in version flies longer Designer Conover updated original 1943 design slightly nineties Correct launch stance 8-in-span Catapult Canard-I rubber stretched about 50 percent actual launch Proper loading technique Using 10-in stick 10-in loop Ia-in rubber 6-in-span CC-I almost overkill glue Spread thin layer both sides add second coat about 15 minutes later Use plan layout set proper angles Just sight along wing placed edge over plan Its easy quick 5 Carefully draw fuselage pattern 3/33 balsa sheet Its important get angle decalage between wings correct best performance Round fuselage corners slightly soft used piece fine sandpaper keep airfoil flat add 3/33 gripper after rear wing has glued gripper keeps fingers disturbing rudder adjustment 6 Glue pin both wings place looking straight dry 7 Carefully cut fin firm C-grain 132 balsa sheet fin will quite fragile narrow front part until has glued place Taper structure top rear rudder area Make sure glue straight fuselage centerline cabin can drawn fin ball-point pen before assembly impressive effect try simulating aluminum foil after assembly 8 Note thin glue skin dihedral joints nose wing leading edges Thin some Sigment acetone thinner achieve Paint glue small brush neatest job Continued page 179 August 1992 83 FF Catapult Canard Type Outdoor Catapult Glider Wingspan Eight inches Wing area available Recommended size rubber loop 18-inch length /s-in FAI tan rubber formed 7- 9-in loop Jake age 12 shows perfect form launching 6-in trainer 7-in catapult amazed model nibbled thermal glide Nine-year-old Amy launches gusto fourth launch ship did five quick barrel rolls rolled out top Tom age 12 launches 8-in-span glider good-sized catapult Kids built CC-Is part summer program 0123456 Inches USE THESE DWGS TO SET DIHEDRAL ANGLES AS GLUE DRIES 112 114 1 9/16 1/8 EBQHJ W ALL FLYING SURFACES SIG 8$ 10# C-GRAIN WING SPAN 8 WT ZO GRAMS 4 CONOVER MODEL WORKS AIAELJLL 7 -9 LOOP OF 1/8 RUBBER ON 9 STICK E1W1i MARKING PEN BEFORE GLUING ADD TWO COATS CLEAR AIRFOIL SECTIONS 200% UP 1 T SHEET i k CATAPULT CANARD CC-i PGM DESIGN LARRY CONOVER GLUE SKIN JULY4 1991 INK ART DOTTIE C 1/ {j ALUM FOIL BIN FR T WING 10PLUS __________________4# il/32S1 FUSELAGE 8$ 10$ 3/32 SHEET REAR WING 0 SCALE FULL SIZE 90 Model Aviation 1 3/8 1 004 POP-CAN ADJUSTER STRIPS BO1TOM ONLY 7ttit I0 -J I Li44 S MADE IN ONE PIECE AIRFOIL SHAPED THEN LINES SCORED ON BOTTOM AND DIHEDRAL IS CRACKED IN PLACE Box 1063 Lorain Ohio 44055 e 216 282-8354 16 Clipp rcraft Eti y9sqult9j Big Flying Scale Kits Over Two Foot Span *Piper Cub1795 *Stinson 1251795 *Piper PA-161795 Semi-Scale Kits C02 Rubber Power 22 Span *Taylorcraft1095 *Stinson Voyager 1095 *P0-6 Porter1095 Contest-Sport Kits * Hornet Embryo1095 * Hornet P-301695 Fits P-30 & Pee Wee Rules Outdoor Peanut Scale Kits 13 Span *Cub895 *Stinson 125895 *Vagabond895 *Farman895 *Jodel695 *Fike995 1/2 RIO Gas Electric Kits Fits Astro 035 Taylorcraft3995 Stinson 1253995 HARD TO FIND ITEMS Brown 002 Motors Accessories Over 20 Sizes Rubber Strip Japanese Tissue Super Fine Balsa Sheets & Strips Add 10% Shipping $250 Minimum Shipping CATALOG $200 Narrow uana 1St MW lx WItfl AMA UOld Sticker Servo Reversing much Tx & Narrow Band Rx work 1992 20 KHZ spacings avail EVEN 72 MHz Fregs Improved CE-9C Micro Servo $4995 SUPER-MICRO SYSTEM PRICES 72MHZ 2 OH 2 Servos237 OZ$24495 3 OH 3 Servos281 OZ$29145 4 OH 4 S3rvos325 OZ33895 5 OH 4 Servos326 OZ34995 Tx Dual Rates $1500 NE Mixer $3995 System S&H $1025 G-MARK 061 RIC ENGINES ANDI SPARES IN STOCK _I ICATALOG $100 USA $300 Foreign Add Equipment Sales Tax CalifI Prices Cash Cards 6% I//SAIl 20% DeposIt -COD August1992 91 TYPICAL GLUE SKIN ALL DIHEDRAL JOINTS AND LE OF WINGS CANNON Phone 1805t 581-5061 c SYSTEMS 262800chran5t5uIte28l Sgmg valley CA 93065I DA DIf QVSTEMS MADE IN 1/16 BAL II$ __I 177 GRIPPER drag ratio would give desired performance Note Some people mix microballoons epoxy apparently stops bleed-through problem provides lighter wing Another method coat inside face wood light coat waterbased urethane noted above Let dry use epoxy before apparently also helps using 3M 77 spray adhesive Another great product found Home Depot No dont own stock new sanding product called Rinsen Reuse NICSAND Inc stuff cloth-backed aluminum oxide bonded foam pad extra strength durability idea dust migrates through sanding surface foam backing can vacuumed washed away does clog can used over over Its available 60- 100- 150-grit use 150-grit exclusively working wings David B Fraser Scholarship Science Last month reported tragic death David Fraser crash Mooney Michael Selig coauthor Airfoils Low Speeds Soartech #8 David John Donovan sent letter telling scholarship fund named honor David Fraser family Fraser-Volpe Corp will make initial contribution fund Eligible recipients will selected student applicant pursuing studies either science engineering Memorial contributions endow fund may sent David B Fraser Scholarship Science Mr Jonathan Fraser 1335 Slayton Dr Maple Glen PA 19002 MARCS Symposium popular Madison Area RIC Societys National Sailplane Symposium scheduled October24 25 1992 will held Ramada Inn 3841 East Washington Ave Madison Wisconsin 53704 Call 608 244-2481 room reservations can arrive early usual day trip EAA Museum Oshkosh will Friday 23rd list speakers finalized write however symposium always interesting affair great windup flying season Its like Old Home Weekend Soaring set information contact Carl Mohs 5024 Lake Mendota Dr Madison WI 53705 telephone 608 238-2321 rdlConover Continued page 83 10 Brush light thinned clear dope surfaces Sand fine paper Brush second coat Dont sand gripper area need good grip Dont worry about too much weight dope adds /2 gram need strength get maximum climb slick flying surfaces Now fun begins Three reasons CC-I makes good first flying training model 1 Its easy quick build repair 2 Its teaching tool shows tenderfoots adjust flying models key early success 3 Performance outstanding Can imagine effect Star Wars climb 10 times higher kids home Adjustments flight begin doing hand glides under mentors guidance could begine balancing model vee scissors CG point indicated plan its easier just test glide add spot clay nose Some will require no clay students picnic hand gliding models city council chambers too windy outside goal should get streaking tight spiral climb rolls out top may have bend slight amount down elevon rear wing opposite glide circle model must have glide circle youll lose downwind brush Try /32 right rudder glide turn 1h2 down elevon right rear wing starting trim should give safe left bank launch right glide circle kids get see what big difference small amount trim makes model flies model comes screaming down off top 9-G dive may have bend bit up elevon both sides Newtons laws paraphrased says reaction up elevon will push side wing down flight too loopy doesnt achieve much altitude try down elevon both sides prefer adjust main rear wing rudder sodacan adjuster strips help make fine trim adjustments stay put trimming phase ideal time teach students basics flight adjustment will apply flying models build future fullscale aircraft impact like teaching young person read write properly Both can have far-reaching effects rest lives Prelaunch catapult technique Make up catapult match fliers arm length Small kids need about seven-inch loop t/s4n FAI tan rubber 9 x 14-in dowel piece hard 14-in-sq balsa Longer arms can use nine-inch 1oop nine-inch catapult 10-inch loop 10-inch stick 1oop too long model will catch flop SPECIALIST IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S 074S & 09S ALL CUSTOM & STOCK PARTS AD U 5InUInIA V OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIIT SPARK PLUGS SILK S COLORS QUALITY DOPE BRUSHES 5 & 7 LOOP 1/4 RUBBERBANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 112A TEXACO PLAYBOY SR KIT l/2A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES ORDER BY MAIL OR PHONE 619 728-4365 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING HANDLING AND INSURANCE FEE $350 STOCK ORDERS SHIPPED WITHIN 24 HRS August 1992 179 NEW PRODUCT NEW PRODUCT NEW PRODUCT NEW PRODUCT AIRFOIL DATA DISKS FOILED AGAINW Now popular demand shipping disks ready-made airfoils use FOILED AGAINIII MORE THAN 50 AIRFOIL DATA FILES ON EACH DISK IN NEW STANDARDIZED DATA FORMAT ILLUSTRATED 58-PAGE MANUAL WITH MULTIPLE PLOTS & COORDINATE DATA FOR EACH AIRFOIL Disk Selig-Donovan Eppler other Airfoils Disk B NACA Symmetric Cambered Airfoils EHRHRRH TOILED AGAIN VT 3D RI Ale ORDER YOUR COPIES NOW $2500 OVERSEAS UPPERS 53500 US PER RTSIR WATCH OUR ADS TSR NFl SOT OTHER DATA DISK RELEASES CYGNET Software 619 792-8021 3525 Del Mar Heights #2375 San Diego CA 92130 OUR REV-UP INVENTORY AVERAGES OVER 9000 PROPSIII PROMPT SHIPMENT ON VISAIMC RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF TUBING THREE BRANDS OF GLOW PLUGS HARD-TO-FIND HARDWARE 9 Add soda-can adjuster strips No 8 pin catapult attachment point Coat thinly glue BIG GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE * Superior lgniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep engines running peak performance longer * Satisfaction Guaranteed FREE SHIPPING ON ORDERS OVER $1500 SIG CHAMPION 2-STROKE PANT QUART 0% Nltromethane 5% Nitromethane$325$495 100/0 Nitromethane$395$535 150k Nitromethane$395$825 25% Nitromethane$495$795 35% Nitromethane$595$895 FUEL GALLON $995 $1295 $1495 $1695 $2295 $2795 SIG PREMIUM 4-STROKE FUEL 10% Nitromethane$1395 15% Nitromethane$1625 THE CHOICE OF CHAMPION FLYERS over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best grade money can buy also use real 100% pure Nitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels con tain 50-50 blend Bakers purest AA Castor Oil new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge yourselfPrice oobiect change wittoot notice See dealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 SIG MANUFACTURING CO Montezuma IA 50171 U U U U U I I I I I I I I U U U U U U U U U •EEEEEEEEEEEEEUU3W 180 Model Aviation space shots use 12 x 3/s-in dowel 11-in loop 1/8-jn rubber current AMA rules allow 30-in loop 1/4-in rubber mounted pole six feet high Thats overkill using brute force launching 12-in-span high-speed deltas 30 years ago spectacular dangerous CC-I will reach higher altitudes launched nine-inch loop rubber nine-inch catapult ever did highpowered deltas Its considerably safer too Launch program Grasp rear fuselage left thumb forefinger Dont touch rudder youll lose trim Hold catapult stick pointed up near lower end allow rubber loop drape palm Hold model nose up guide loop onto notch Stretch model well back hold stick high effect 700 nearly vertical launch attitude Bank craft left have right glide circle dont have launch CC-I wind fact its better fly much wind you may have chase model long distances Avoid thermal conditions too unless want risk sight airplane disappearing overhead Dont launch model direction sun Youll lose sight glare some secrets winning 1 Build two three models competition flying Expect lose thermal flights 2 Use bright colors Keep eyes exact spot model comes down Line up reference point downwind small model seldom goes far downwind think has Keep eyes search path Its easy step model weedsnot good 3 dont agree current AMA rules catapult launching combination six-foot pole 30-inch loop user friendly either spectators Contest Directors six-inch limit length launching stick hand launching restricts both small arms small models can should able maneuver nine- 12-inch stick advantage shoot-em-up contestants find /8-in rubber provides plenty power small models present specification 9 X /4-in flat loop okay larger models tends cause launching problems some small models now follow AMA rules contest flying try guidelines sport flying teaching 4 Make catapult stick /4-in 31s-in dowel Groove stick 1/4 top Loop rubber upon itself cinch up groove Use Is-in FAI tan rubber Ed Dolbys FAT Model Supplyits snappy Hold stick near bottom get some spring out along rubber 5 Experiment launch angle degree bank achieve good pullout LIGHTING SYSTEMS THE ORIGINALS. Still Best *RED 01Programmable Flashing Navigation Lights 9V$2495 *RED 02Strobe Light Adj Rate 9V$1995 *RED 03Landing Lights 48V$3995 *RED 04Mars 0Rotating Beacon Adj Rate 9 V$1995 #RED 05Marine Navigation Lights nonflashing9V$1095 *RED 06Sky Lights 18 Light Set 9 V$2495 *RED 14Big Airplane Navigation Lights 9V$2495 *RED 16Econo Landing Lights brightest 9V$1995 *RED 23Real Strobe Light true zenon strobe3V$2995 S SEE YOUR DEALER 0 SEND STAMPED ENVELOPE FOR RAM INFO unavailable locally send check money order full credit card Info cost item plus $400 $500 forelgnfor immediate shipment Include full address U PS Sorry no COD 229 E Rollins Rd d Lake Beach IL 60073 U U p U U U I I I I I I I I I I I U U U U U U U U U U U U E U U U U 5 top climb Always shoot upward high angle 6 Get copy Dave Thomburgs Old Buzzards Soaring Book want launch thermals 7 Try larger version CC-I Through miracle modem photocopiers can enlarge plan 9- 10- 11-in wingspan Larger models stay sight longer glide little better joy flying Nine-year-old Amy never built flown balsawood model brother lake brought along PGM class great things say about flying sessions taught fly six-inch CC-I club trainer fourth launch model went screeching almost straight up doing five quick barrel rolls rolled out topway up Amy awestruck Look go hollered Look go ready start building own right away Eleven-year-old Joe best launchers consistently gets highaltitude launches super flights cut off flying about 1030 because nearly lost club trainer Colorado miniboomer Twelve-year-old Jake loves little mighty midget flier Coming highaltitude two-minute flight model nipped edge thermal vortex about 30 feet up did double roll just maintained attitude its downwind leg just gotta try mighty midget CC-I Itsablast st1992 181 Catapult Canard-I Materials List /32 x 3 x 9-in medium-hard B-C balsa sheet I32 x 1 x 6114-in medium-hard balsa sheet 18-in length 11s-in flat rubber strip /4 x 9-in dowel stick Balsa cement clear dope marking pens aluminum beverage can strips clay
Edition: Model Aviation - 1992/08
Page Numbers: 82, 83, 90, 91, 179, 180, 181
Whats quick build flies 10 times higher house excites youngsters mighty midget PGM trainer thats what Larry Conover Full-size plans page 90 WANT have some high-flying fun scare puddin out strong-arm hand launch experts little catapult canard will outclimb outfly anything side Heaviside Layer So youd better have eyes like eagle legs like 1936 Olympic track star Jesse Owens Easily built evening cost about quarter mighty midget will amaze friends delight kids can still remember surprise first built flew off drawing board back high school years later decided try out group eight- 14-year-olds summer classes sponsored Silverthorne Recreation Department kids loved emtheyd built em flew like Star Wars fighter training model now step two PGM Project Grandpa Mentor educational program just another little throw-glider kids two keys success large box broad felt-tipped markers such Magic Marker pens center activity modeler/mentor student uses own creative ability put weird designs model parts before gluing done love Kids can color Construction simple having teacher/mentor close will ensure success kids can build gliders 10 easy steps Make patterns cutting out parts plan Use glue stick adhere file folder stock 2 /32 balsa sheet firm enough can cut parts sharp scissors Shape airfoils both wings before decorating plane marking pens can get square-edge wings performance will suffer use soft balsa model climbs like rocket needs strength 3 Color surfaces before gluing Model cement will disturb markers cant well markers over cement 4 Score bottom wings dihedral joints dead ball-point pen Crease-crack dihedral breaks top side wing down over sharp edge wooden block sure break joint apart Double-coat joint 82 Model Aviation Catapult Canard cc pair Catapult Canard-Is runi ns 6-in wingspan larger 8-in version flies longer Designer Conover updated original 1943 design slightly nineties Correct launch stance 8-in-span Catapult Canard-I rubber stretched about 50 percent actual launch Proper loading technique Using 10-in stick 10-in loop Ia-in rubber 6-in-span CC-I almost overkill glue Spread thin layer both sides add second coat about 15 minutes later Use plan layout set proper angles Just sight along wing placed edge over plan Its easy quick 5 Carefully draw fuselage pattern 3/33 balsa sheet Its important get angle decalage between wings correct best performance Round fuselage corners slightly soft used piece fine sandpaper keep airfoil flat add 3/33 gripper after rear wing has glued gripper keeps fingers disturbing rudder adjustment 6 Glue pin both wings place looking straight dry 7 Carefully cut fin firm C-grain 132 balsa sheet fin will quite fragile narrow front part until has glued place Taper structure top rear rudder area Make sure glue straight fuselage centerline cabin can drawn fin ball-point pen before assembly impressive effect try simulating aluminum foil after assembly 8 Note thin glue skin dihedral joints nose wing leading edges Thin some Sigment acetone thinner achieve Paint glue small brush neatest job Continued page 179 August 1992 83 FF Catapult Canard Type Outdoor Catapult Glider Wingspan Eight inches Wing area available Recommended size rubber loop 18-inch length /s-in FAI tan rubber formed 7- 9-in loop Jake age 12 shows perfect form launching 6-in trainer 7-in catapult amazed model nibbled thermal glide Nine-year-old Amy launches gusto fourth launch ship did five quick barrel rolls rolled out top Tom age 12 launches 8-in-span glider good-sized catapult Kids built CC-Is part summer program 0123456 Inches USE THESE DWGS TO SET DIHEDRAL ANGLES AS GLUE DRIES 112 114 1 9/16 1/8 EBQHJ W ALL FLYING SURFACES SIG 8$ 10# C-GRAIN WING SPAN 8 WT ZO GRAMS 4 CONOVER MODEL WORKS AIAELJLL 7 -9 LOOP OF 1/8 RUBBER ON 9 STICK E1W1i MARKING PEN BEFORE GLUING ADD TWO COATS CLEAR AIRFOIL SECTIONS 200% UP 1 T SHEET i k CATAPULT CANARD CC-i PGM DESIGN LARRY CONOVER GLUE SKIN JULY4 1991 INK ART DOTTIE C 1/ {j ALUM FOIL BIN FR T WING 10PLUS __________________4# il/32S1 FUSELAGE 8$ 10$ 3/32 SHEET REAR WING 0 SCALE FULL SIZE 90 Model Aviation 1 3/8 1 004 POP-CAN ADJUSTER STRIPS BO1TOM ONLY 7ttit I0 -J I Li44 S MADE IN ONE PIECE AIRFOIL SHAPED THEN LINES SCORED ON BOTTOM AND DIHEDRAL IS CRACKED IN PLACE Box 1063 Lorain Ohio 44055 e 216 282-8354 16 Clipp rcraft Eti y9sqult9j Big Flying Scale Kits Over Two Foot Span *Piper Cub1795 *Stinson 1251795 *Piper PA-161795 Semi-Scale Kits C02 Rubber Power 22 Span *Taylorcraft1095 *Stinson Voyager 1095 *P0-6 Porter1095 Contest-Sport Kits * Hornet Embryo1095 * Hornet P-301695 Fits P-30 & Pee Wee Rules Outdoor Peanut Scale Kits 13 Span *Cub895 *Stinson 125895 *Vagabond895 *Farman895 *Jodel695 *Fike995 1/2 RIO Gas Electric Kits Fits Astro 035 Taylorcraft3995 Stinson 1253995 HARD TO FIND ITEMS Brown 002 Motors Accessories Over 20 Sizes Rubber Strip Japanese Tissue Super Fine Balsa Sheets & Strips Add 10% Shipping $250 Minimum Shipping CATALOG $200 Narrow uana 1St MW lx WItfl AMA UOld Sticker Servo Reversing much Tx & Narrow Band Rx work 1992 20 KHZ spacings avail EVEN 72 MHz Fregs Improved CE-9C Micro Servo $4995 SUPER-MICRO SYSTEM PRICES 72MHZ 2 OH 2 Servos237 OZ$24495 3 OH 3 Servos281 OZ$29145 4 OH 4 S3rvos325 OZ33895 5 OH 4 Servos326 OZ34995 Tx Dual Rates $1500 NE Mixer $3995 System S&H $1025 G-MARK 061 RIC ENGINES ANDI SPARES IN STOCK _I ICATALOG $100 USA $300 Foreign Add Equipment Sales Tax CalifI Prices Cash Cards 6% I//SAIl 20% DeposIt -COD August1992 91 TYPICAL GLUE SKIN ALL DIHEDRAL JOINTS AND LE OF WINGS CANNON Phone 1805t 581-5061 c SYSTEMS 262800chran5t5uIte28l Sgmg valley CA 93065I DA DIf QVSTEMS MADE IN 1/16 BAL II$ __I 177 GRIPPER drag ratio would give desired performance Note Some people mix microballoons epoxy apparently stops bleed-through problem provides lighter wing Another method coat inside face wood light coat waterbased urethane noted above Let dry use epoxy before apparently also helps using 3M 77 spray adhesive Another great product found Home Depot No dont own stock new sanding product called Rinsen Reuse NICSAND Inc stuff cloth-backed aluminum oxide bonded foam pad extra strength durability idea dust migrates through sanding surface foam backing can vacuumed washed away does clog can used over over Its available 60- 100- 150-grit use 150-grit exclusively working wings David B Fraser Scholarship Science Last month reported tragic death David Fraser crash Mooney Michael Selig coauthor Airfoils Low Speeds Soartech #8 David John Donovan sent letter telling scholarship fund named honor David Fraser family Fraser-Volpe Corp will make initial contribution fund Eligible recipients will selected student applicant pursuing studies either science engineering Memorial contributions endow fund may sent David B Fraser Scholarship Science Mr Jonathan Fraser 1335 Slayton Dr Maple Glen PA 19002 MARCS Symposium popular Madison Area RIC Societys National Sailplane Symposium scheduled October24 25 1992 will held Ramada Inn 3841 East Washington Ave Madison Wisconsin 53704 Call 608 244-2481 room reservations can arrive early usual day trip EAA Museum Oshkosh will Friday 23rd list speakers finalized write however symposium always interesting affair great windup flying season Its like Old Home Weekend Soaring set information contact Carl Mohs 5024 Lake Mendota Dr Madison WI 53705 telephone 608 238-2321 rdlConover Continued page 83 10 Brush light thinned clear dope surfaces Sand fine paper Brush second coat Dont sand gripper area need good grip Dont worry about too much weight dope adds /2 gram need strength get maximum climb slick flying surfaces Now fun begins Three reasons CC-I makes good first flying training model 1 Its easy quick build repair 2 Its teaching tool shows tenderfoots adjust flying models key early success 3 Performance outstanding Can imagine effect Star Wars climb 10 times higher kids home Adjustments flight begin doing hand glides under mentors guidance could begine balancing model vee scissors CG point indicated plan its easier just test glide add spot clay nose Some will require no clay students picnic hand gliding models city council chambers too windy outside goal should get streaking tight spiral climb rolls out top may have bend slight amount down elevon rear wing opposite glide circle model must have glide circle youll lose downwind brush Try /32 right rudder glide turn 1h2 down elevon right rear wing starting trim should give safe left bank launch right glide circle kids get see what big difference small amount trim makes model flies model comes screaming down off top 9-G dive may have bend bit up elevon both sides Newtons laws paraphrased says reaction up elevon will push side wing down flight too loopy doesnt achieve much altitude try down elevon both sides prefer adjust main rear wing rudder sodacan adjuster strips help make fine trim adjustments stay put trimming phase ideal time teach students basics flight adjustment will apply flying models build future fullscale aircraft impact like teaching young person read write properly Both can have far-reaching effects rest lives Prelaunch catapult technique Make up catapult match fliers arm length Small kids need about seven-inch loop t/s4n FAI tan rubber 9 x 14-in dowel piece hard 14-in-sq balsa Longer arms can use nine-inch 1oop nine-inch catapult 10-inch loop 10-inch stick 1oop too long model will catch flop SPECIALIST IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S 074S & 09S ALL CUSTOM & STOCK PARTS AD U 5InUInIA V OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIIT SPARK PLUGS SILK S COLORS QUALITY DOPE BRUSHES 5 & 7 LOOP 1/4 RUBBERBANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 112A TEXACO PLAYBOY SR KIT l/2A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES ORDER BY MAIL OR PHONE 619 728-4365 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING HANDLING AND INSURANCE FEE $350 STOCK ORDERS SHIPPED WITHIN 24 HRS August 1992 179 NEW PRODUCT NEW PRODUCT NEW PRODUCT NEW PRODUCT AIRFOIL DATA DISKS FOILED AGAINW Now popular demand shipping disks ready-made airfoils use FOILED AGAINIII MORE THAN 50 AIRFOIL DATA FILES ON EACH DISK IN NEW STANDARDIZED DATA FORMAT ILLUSTRATED 58-PAGE MANUAL WITH MULTIPLE PLOTS & COORDINATE DATA FOR EACH AIRFOIL Disk Selig-Donovan Eppler other Airfoils Disk B NACA Symmetric Cambered Airfoils EHRHRRH TOILED AGAIN VT 3D RI Ale ORDER YOUR COPIES NOW $2500 OVERSEAS UPPERS 53500 US PER RTSIR WATCH OUR ADS TSR NFl SOT OTHER DATA DISK RELEASES CYGNET Software 619 792-8021 3525 Del Mar Heights #2375 San Diego CA 92130 OUR REV-UP INVENTORY AVERAGES OVER 9000 PROPSIII PROMPT SHIPMENT ON VISAIMC RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF TUBING THREE BRANDS OF GLOW PLUGS HARD-TO-FIND HARDWARE 9 Add soda-can adjuster strips No 8 pin catapult attachment point Coat thinly glue BIG GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE * Superior lgniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep engines running peak performance longer * Satisfaction Guaranteed FREE SHIPPING ON ORDERS OVER $1500 SIG CHAMPION 2-STROKE PANT QUART 0% Nltromethane 5% Nitromethane$325$495 100/0 Nitromethane$395$535 150k Nitromethane$395$825 25% Nitromethane$495$795 35% Nitromethane$595$895 FUEL GALLON $995 $1295 $1495 $1695 $2295 $2795 SIG PREMIUM 4-STROKE FUEL 10% Nitromethane$1395 15% Nitromethane$1625 THE CHOICE OF CHAMPION FLYERS over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best grade money can buy also use real 100% pure Nitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels con tain 50-50 blend Bakers purest AA Castor Oil new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge yourselfPrice oobiect change wittoot notice See dealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 SIG MANUFACTURING CO Montezuma IA 50171 U U U U U I I I I I I I I U U U U U U U U U •EEEEEEEEEEEEEUU3W 180 Model Aviation space shots use 12 x 3/s-in dowel 11-in loop 1/8-jn rubber current AMA rules allow 30-in loop 1/4-in rubber mounted pole six feet high Thats overkill using brute force launching 12-in-span high-speed deltas 30 years ago spectacular dangerous CC-I will reach higher altitudes launched nine-inch loop rubber nine-inch catapult ever did highpowered deltas Its considerably safer too Launch program Grasp rear fuselage left thumb forefinger Dont touch rudder youll lose trim Hold catapult stick pointed up near lower end allow rubber loop drape palm Hold model nose up guide loop onto notch Stretch model well back hold stick high effect 700 nearly vertical launch attitude Bank craft left have right glide circle dont have launch CC-I wind fact its better fly much wind you may have chase model long distances Avoid thermal conditions too unless want risk sight airplane disappearing overhead Dont launch model direction sun Youll lose sight glare some secrets winning 1 Build two three models competition flying Expect lose thermal flights 2 Use bright colors Keep eyes exact spot model comes down Line up reference point downwind small model seldom goes far downwind think has Keep eyes search path Its easy step model weedsnot good 3 dont agree current AMA rules catapult launching combination six-foot pole 30-inch loop user friendly either spectators Contest Directors six-inch limit length launching stick hand launching restricts both small arms small models can should able maneuver nine- 12-inch stick advantage shoot-em-up contestants find /8-in rubber provides plenty power small models present specification 9 X /4-in flat loop okay larger models tends cause launching problems some small models now follow AMA rules contest flying try guidelines sport flying teaching 4 Make catapult stick /4-in 31s-in dowel Groove stick 1/4 top Loop rubber upon itself cinch up groove Use Is-in FAI tan rubber Ed Dolbys FAT Model Supplyits snappy Hold stick near bottom get some spring out along rubber 5 Experiment launch angle degree bank achieve good pullout LIGHTING SYSTEMS THE ORIGINALS. Still Best *RED 01Programmable Flashing Navigation Lights 9V$2495 *RED 02Strobe Light Adj Rate 9V$1995 *RED 03Landing Lights 48V$3995 *RED 04Mars 0Rotating Beacon Adj Rate 9 V$1995 #RED 05Marine Navigation Lights nonflashing9V$1095 *RED 06Sky Lights 18 Light Set 9 V$2495 *RED 14Big Airplane Navigation Lights 9V$2495 *RED 16Econo Landing Lights brightest 9V$1995 *RED 23Real Strobe Light true zenon strobe3V$2995 S SEE YOUR DEALER 0 SEND STAMPED ENVELOPE FOR RAM INFO unavailable locally send check money order full credit card Info cost item plus $400 $500 forelgnfor immediate shipment Include full address U PS Sorry no COD 229 E Rollins Rd d Lake Beach IL 60073 U U p U U U I I I I I I I I I I I U U U U U U U U U U U U E U U U U 5 top climb Always shoot upward high angle 6 Get copy Dave Thomburgs Old Buzzards Soaring Book want launch thermals 7 Try larger version CC-I Through miracle modem photocopiers can enlarge plan 9- 10- 11-in wingspan Larger models stay sight longer glide little better joy flying Nine-year-old Amy never built flown balsawood model brother lake brought along PGM class great things say about flying sessions taught fly six-inch CC-I club trainer fourth launch model went screeching almost straight up doing five quick barrel rolls rolled out topway up Amy awestruck Look go hollered Look go ready start building own right away Eleven-year-old Joe best launchers consistently gets highaltitude launches super flights cut off flying about 1030 because nearly lost club trainer Colorado miniboomer Twelve-year-old Jake loves little mighty midget flier Coming highaltitude two-minute flight model nipped edge thermal vortex about 30 feet up did double roll just maintained attitude its downwind leg just gotta try mighty midget CC-I Itsablast st1992 181 Catapult Canard-I Materials List /32 x 3 x 9-in medium-hard B-C balsa sheet I32 x 1 x 6114-in medium-hard balsa sheet 18-in length 11s-in flat rubber strip /4 x 9-in dowel stick Balsa cement clear dope marking pens aluminum beverage can strips clay
Edition: Model Aviation - 1992/08
Page Numbers: 82, 83, 90, 91, 179, 180, 181
Whats quick build flies 10 times higher house excites youngsters mighty midget PGM trainer thats what Larry Conover Full-size plans page 90 WANT have some high-flying fun scare puddin out strong-arm hand launch experts little catapult canard will outclimb outfly anything side Heaviside Layer So youd better have eyes like eagle legs like 1936 Olympic track star Jesse Owens Easily built evening cost about quarter mighty midget will amaze friends delight kids can still remember surprise first built flew off drawing board back high school years later decided try out group eight- 14-year-olds summer classes sponsored Silverthorne Recreation Department kids loved emtheyd built em flew like Star Wars fighter training model now step two PGM Project Grandpa Mentor educational program just another little throw-glider kids two keys success large box broad felt-tipped markers such Magic Marker pens center activity modeler/mentor student uses own creative ability put weird designs model parts before gluing done love Kids can color Construction simple having teacher/mentor close will ensure success kids can build gliders 10 easy steps Make patterns cutting out parts plan Use glue stick adhere file folder stock 2 /32 balsa sheet firm enough can cut parts sharp scissors Shape airfoils both wings before decorating plane marking pens can get square-edge wings performance will suffer use soft balsa model climbs like rocket needs strength 3 Color surfaces before gluing Model cement will disturb markers cant well markers over cement 4 Score bottom wings dihedral joints dead ball-point pen Crease-crack dihedral breaks top side wing down over sharp edge wooden block sure break joint apart Double-coat joint 82 Model Aviation Catapult Canard cc pair Catapult Canard-Is runi ns 6-in wingspan larger 8-in version flies longer Designer Conover updated original 1943 design slightly nineties Correct launch stance 8-in-span Catapult Canard-I rubber stretched about 50 percent actual launch Proper loading technique Using 10-in stick 10-in loop Ia-in rubber 6-in-span CC-I almost overkill glue Spread thin layer both sides add second coat about 15 minutes later Use plan layout set proper angles Just sight along wing placed edge over plan Its easy quick 5 Carefully draw fuselage pattern 3/33 balsa sheet Its important get angle decalage between wings correct best performance Round fuselage corners slightly soft used piece fine sandpaper keep airfoil flat add 3/33 gripper after rear wing has glued gripper keeps fingers disturbing rudder adjustment 6 Glue pin both wings place looking straight dry 7 Carefully cut fin firm C-grain 132 balsa sheet fin will quite fragile narrow front part until has glued place Taper structure top rear rudder area Make sure glue straight fuselage centerline cabin can drawn fin ball-point pen before assembly impressive effect try simulating aluminum foil after assembly 8 Note thin glue skin dihedral joints nose wing leading edges Thin some Sigment acetone thinner achieve Paint glue small brush neatest job Continued page 179 August 1992 83 FF Catapult Canard Type Outdoor Catapult Glider Wingspan Eight inches Wing area available Recommended size rubber loop 18-inch length /s-in FAI tan rubber formed 7- 9-in loop Jake age 12 shows perfect form launching 6-in trainer 7-in catapult amazed model nibbled thermal glide Nine-year-old Amy launches gusto fourth launch ship did five quick barrel rolls rolled out top Tom age 12 launches 8-in-span glider good-sized catapult Kids built CC-Is part summer program 0123456 Inches USE THESE DWGS TO SET DIHEDRAL ANGLES AS GLUE DRIES 112 114 1 9/16 1/8 EBQHJ W ALL FLYING SURFACES SIG 8$ 10# C-GRAIN WING SPAN 8 WT ZO GRAMS 4 CONOVER MODEL WORKS AIAELJLL 7 -9 LOOP OF 1/8 RUBBER ON 9 STICK E1W1i MARKING PEN BEFORE GLUING ADD TWO COATS CLEAR AIRFOIL SECTIONS 200% UP 1 T SHEET i k CATAPULT CANARD CC-i PGM DESIGN LARRY CONOVER GLUE SKIN JULY4 1991 INK ART DOTTIE C 1/ {j ALUM FOIL BIN FR T WING 10PLUS __________________4# il/32S1 FUSELAGE 8$ 10$ 3/32 SHEET REAR WING 0 SCALE FULL SIZE 90 Model Aviation 1 3/8 1 004 POP-CAN ADJUSTER STRIPS BO1TOM ONLY 7ttit I0 -J I Li44 S MADE IN ONE PIECE AIRFOIL SHAPED THEN LINES SCORED ON BOTTOM AND DIHEDRAL IS CRACKED IN PLACE Box 1063 Lorain Ohio 44055 e 216 282-8354 16 Clipp rcraft Eti y9sqult9j Big Flying Scale Kits Over Two Foot Span *Piper Cub1795 *Stinson 1251795 *Piper PA-161795 Semi-Scale Kits C02 Rubber Power 22 Span *Taylorcraft1095 *Stinson Voyager 1095 *P0-6 Porter1095 Contest-Sport Kits * Hornet Embryo1095 * Hornet P-301695 Fits P-30 & Pee Wee Rules Outdoor Peanut Scale Kits 13 Span *Cub895 *Stinson 125895 *Vagabond895 *Farman895 *Jodel695 *Fike995 1/2 RIO Gas Electric Kits Fits Astro 035 Taylorcraft3995 Stinson 1253995 HARD TO FIND ITEMS Brown 002 Motors Accessories Over 20 Sizes Rubber Strip Japanese Tissue Super Fine Balsa Sheets & Strips Add 10% Shipping $250 Minimum Shipping CATALOG $200 Narrow uana 1St MW lx WItfl AMA UOld Sticker Servo Reversing much Tx & Narrow Band Rx work 1992 20 KHZ spacings avail EVEN 72 MHz Fregs Improved CE-9C Micro Servo $4995 SUPER-MICRO SYSTEM PRICES 72MHZ 2 OH 2 Servos237 OZ$24495 3 OH 3 Servos281 OZ$29145 4 OH 4 S3rvos325 OZ33895 5 OH 4 Servos326 OZ34995 Tx Dual Rates $1500 NE Mixer $3995 System S&H $1025 G-MARK 061 RIC ENGINES ANDI SPARES IN STOCK _I ICATALOG $100 USA $300 Foreign Add Equipment Sales Tax CalifI Prices Cash Cards 6% I//SAIl 20% DeposIt -COD August1992 91 TYPICAL GLUE SKIN ALL DIHEDRAL JOINTS AND LE OF WINGS CANNON Phone 1805t 581-5061 c SYSTEMS 262800chran5t5uIte28l Sgmg valley CA 93065I DA DIf QVSTEMS MADE IN 1/16 BAL II$ __I 177 GRIPPER drag ratio would give desired performance Note Some people mix microballoons epoxy apparently stops bleed-through problem provides lighter wing Another method coat inside face wood light coat waterbased urethane noted above Let dry use epoxy before apparently also helps using 3M 77 spray adhesive Another great product found Home Depot No dont own stock new sanding product called Rinsen Reuse NICSAND Inc stuff cloth-backed aluminum oxide bonded foam pad extra strength durability idea dust migrates through sanding surface foam backing can vacuumed washed away does clog can used over over Its available 60- 100- 150-grit use 150-grit exclusively working wings David B Fraser Scholarship Science Last month reported tragic death David Fraser crash Mooney Michael Selig coauthor Airfoils Low Speeds Soartech #8 David John Donovan sent letter telling scholarship fund named honor David Fraser family Fraser-Volpe Corp will make initial contribution fund Eligible recipients will selected student applicant pursuing studies either science engineering Memorial contributions endow fund may sent David B Fraser Scholarship Science Mr Jonathan Fraser 1335 Slayton Dr Maple Glen PA 19002 MARCS Symposium popular Madison Area RIC Societys National Sailplane Symposium scheduled October24 25 1992 will held Ramada Inn 3841 East Washington Ave Madison Wisconsin 53704 Call 608 244-2481 room reservations can arrive early usual day trip EAA Museum Oshkosh will Friday 23rd list speakers finalized write however symposium always interesting affair great windup flying season Its like Old Home Weekend Soaring set information contact Carl Mohs 5024 Lake Mendota Dr Madison WI 53705 telephone 608 238-2321 rdlConover Continued page 83 10 Brush light thinned clear dope surfaces Sand fine paper Brush second coat Dont sand gripper area need good grip Dont worry about too much weight dope adds /2 gram need strength get maximum climb slick flying surfaces Now fun begins Three reasons CC-I makes good first flying training model 1 Its easy quick build repair 2 Its teaching tool shows tenderfoots adjust flying models key early success 3 Performance outstanding Can imagine effect Star Wars climb 10 times higher kids home Adjustments flight begin doing hand glides under mentors guidance could begine balancing model vee scissors CG point indicated plan its easier just test glide add spot clay nose Some will require no clay students picnic hand gliding models city council chambers too windy outside goal should get streaking tight spiral climb rolls out top may have bend slight amount down elevon rear wing opposite glide circle model must have glide circle youll lose downwind brush Try /32 right rudder glide turn 1h2 down elevon right rear wing starting trim should give safe left bank launch right glide circle kids get see what big difference small amount trim makes model flies model comes screaming down off top 9-G dive may have bend bit up elevon both sides Newtons laws paraphrased says reaction up elevon will push side wing down flight too loopy doesnt achieve much altitude try down elevon both sides prefer adjust main rear wing rudder sodacan adjuster strips help make fine trim adjustments stay put trimming phase ideal time teach students basics flight adjustment will apply flying models build future fullscale aircraft impact like teaching young person read write properly Both can have far-reaching effects rest lives Prelaunch catapult technique Make up catapult match fliers arm length Small kids need about seven-inch loop t/s4n FAI tan rubber 9 x 14-in dowel piece hard 14-in-sq balsa Longer arms can use nine-inch 1oop nine-inch catapult 10-inch loop 10-inch stick 1oop too long model will catch flop SPECIALIST IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S 074S & 09S ALL CUSTOM & STOCK PARTS AD U 5InUInIA V OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIIT SPARK PLUGS SILK S COLORS QUALITY DOPE BRUSHES 5 & 7 LOOP 1/4 RUBBERBANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 112A TEXACO PLAYBOY SR KIT l/2A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES ORDER BY MAIL OR PHONE 619 728-4365 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING HANDLING AND INSURANCE FEE $350 STOCK ORDERS SHIPPED WITHIN 24 HRS August 1992 179 NEW PRODUCT NEW PRODUCT NEW PRODUCT NEW PRODUCT AIRFOIL DATA DISKS FOILED AGAINW Now popular demand shipping disks ready-made airfoils use FOILED AGAINIII MORE THAN 50 AIRFOIL DATA FILES ON EACH DISK IN NEW STANDARDIZED DATA FORMAT ILLUSTRATED 58-PAGE MANUAL WITH MULTIPLE PLOTS & COORDINATE DATA FOR EACH AIRFOIL Disk Selig-Donovan Eppler other Airfoils Disk B NACA Symmetric Cambered Airfoils EHRHRRH TOILED AGAIN VT 3D RI Ale ORDER YOUR COPIES NOW $2500 OVERSEAS UPPERS 53500 US PER RTSIR WATCH OUR ADS TSR NFl SOT OTHER DATA DISK RELEASES CYGNET Software 619 792-8021 3525 Del Mar Heights #2375 San Diego CA 92130 OUR REV-UP INVENTORY AVERAGES OVER 9000 PROPSIII PROMPT SHIPMENT ON VISAIMC RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF TUBING THREE BRANDS OF GLOW PLUGS HARD-TO-FIND HARDWARE 9 Add soda-can adjuster strips No 8 pin catapult attachment point Coat thinly glue BIG GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE * Superior lgniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep engines running peak performance longer * Satisfaction Guaranteed FREE SHIPPING ON ORDERS OVER $1500 SIG CHAMPION 2-STROKE PANT QUART 0% Nltromethane 5% Nitromethane$325$495 100/0 Nitromethane$395$535 150k Nitromethane$395$825 25% Nitromethane$495$795 35% Nitromethane$595$895 FUEL GALLON $995 $1295 $1495 $1695 $2295 $2795 SIG PREMIUM 4-STROKE FUEL 10% Nitromethane$1395 15% Nitromethane$1625 THE CHOICE OF CHAMPION FLYERS over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best grade money can buy also use real 100% pure Nitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels con tain 50-50 blend Bakers purest AA Castor Oil new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge yourselfPrice oobiect change wittoot notice See dealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 SIG MANUFACTURING CO Montezuma IA 50171 U U U U U I I I I I I I I U U U U U U U U U •EEEEEEEEEEEEEUU3W 180 Model Aviation space shots use 12 x 3/s-in dowel 11-in loop 1/8-jn rubber current AMA rules allow 30-in loop 1/4-in rubber mounted pole six feet high Thats overkill using brute force launching 12-in-span high-speed deltas 30 years ago spectacular dangerous CC-I will reach higher altitudes launched nine-inch loop rubber nine-inch catapult ever did highpowered deltas Its considerably safer too Launch program Grasp rear fuselage left thumb forefinger Dont touch rudder youll lose trim Hold catapult stick pointed up near lower end allow rubber loop drape palm Hold model nose up guide loop onto notch Stretch model well back hold stick high effect 700 nearly vertical launch attitude Bank craft left have right glide circle dont have launch CC-I wind fact its better fly much wind you may have chase model long distances Avoid thermal conditions too unless want risk sight airplane disappearing overhead Dont launch model direction sun Youll lose sight glare some secrets winning 1 Build two three models competition flying Expect lose thermal flights 2 Use bright colors Keep eyes exact spot model comes down Line up reference point downwind small model seldom goes far downwind think has Keep eyes search path Its easy step model weedsnot good 3 dont agree current AMA rules catapult launching combination six-foot pole 30-inch loop user friendly either spectators Contest Directors six-inch limit length launching stick hand launching restricts both small arms small models can should able maneuver nine- 12-inch stick advantage shoot-em-up contestants find /8-in rubber provides plenty power small models present specification 9 X /4-in flat loop okay larger models tends cause launching problems some small models now follow AMA rules contest flying try guidelines sport flying teaching 4 Make catapult stick /4-in 31s-in dowel Groove stick 1/4 top Loop rubber upon itself cinch up groove Use Is-in FAI tan rubber Ed Dolbys FAT Model Supplyits snappy Hold stick near bottom get some spring out along rubber 5 Experiment launch angle degree bank achieve good pullout LIGHTING SYSTEMS THE ORIGINALS. Still Best *RED 01Programmable Flashing Navigation Lights 9V$2495 *RED 02Strobe Light Adj Rate 9V$1995 *RED 03Landing Lights 48V$3995 *RED 04Mars 0Rotating Beacon Adj Rate 9 V$1995 #RED 05Marine Navigation Lights nonflashing9V$1095 *RED 06Sky Lights 18 Light Set 9 V$2495 *RED 14Big Airplane Navigation Lights 9V$2495 *RED 16Econo Landing Lights brightest 9V$1995 *RED 23Real Strobe Light true zenon strobe3V$2995 S SEE YOUR DEALER 0 SEND STAMPED ENVELOPE FOR RAM INFO unavailable locally send check money order full credit card Info cost item plus $400 $500 forelgnfor immediate shipment Include full address U PS Sorry no COD 229 E Rollins Rd d Lake Beach IL 60073 U U p U U U I I I I I I I I I I I U U U U U U U U U U U U E U U U U 5 top climb Always shoot upward high angle 6 Get copy Dave Thomburgs Old Buzzards Soaring Book want launch thermals 7 Try larger version CC-I Through miracle modem photocopiers can enlarge plan 9- 10- 11-in wingspan Larger models stay sight longer glide little better joy flying Nine-year-old Amy never built flown balsawood model brother lake brought along PGM class great things say about flying sessions taught fly six-inch CC-I club trainer fourth launch model went screeching almost straight up doing five quick barrel rolls rolled out topway up Amy awestruck Look go hollered Look go ready start building own right away Eleven-year-old Joe best launchers consistently gets highaltitude launches super flights cut off flying about 1030 because nearly lost club trainer Colorado miniboomer Twelve-year-old Jake loves little mighty midget flier Coming highaltitude two-minute flight model nipped edge thermal vortex about 30 feet up did double roll just maintained attitude its downwind leg just gotta try mighty midget CC-I Itsablast st1992 181 Catapult Canard-I Materials List /32 x 3 x 9-in medium-hard B-C balsa sheet I32 x 1 x 6114-in medium-hard balsa sheet 18-in length 11s-in flat rubber strip /4 x 9-in dowel stick Balsa cement clear dope marking pens aluminum beverage can strips clay
Edition: Model Aviation - 1992/08
Page Numbers: 82, 83, 90, 91, 179, 180, 181
Whats quick build flies 10 times higher house excites youngsters mighty midget PGM trainer thats what Larry Conover Full-size plans page 90 WANT have some high-flying fun scare puddin out strong-arm hand launch experts little catapult canard will outclimb outfly anything side Heaviside Layer So youd better have eyes like eagle legs like 1936 Olympic track star Jesse Owens Easily built evening cost about quarter mighty midget will amaze friends delight kids can still remember surprise first built flew off drawing board back high school years later decided try out group eight- 14-year-olds summer classes sponsored Silverthorne Recreation Department kids loved emtheyd built em flew like Star Wars fighter training model now step two PGM Project Grandpa Mentor educational program just another little throw-glider kids two keys success large box broad felt-tipped markers such Magic Marker pens center activity modeler/mentor student uses own creative ability put weird designs model parts before gluing done love Kids can color Construction simple having teacher/mentor close will ensure success kids can build gliders 10 easy steps Make patterns cutting out parts plan Use glue stick adhere file folder stock 2 /32 balsa sheet firm enough can cut parts sharp scissors Shape airfoils both wings before decorating plane marking pens can get square-edge wings performance will suffer use soft balsa model climbs like rocket needs strength 3 Color surfaces before gluing Model cement will disturb markers cant well markers over cement 4 Score bottom wings dihedral joints dead ball-point pen Crease-crack dihedral breaks top side wing down over sharp edge wooden block sure break joint apart Double-coat joint 82 Model Aviation Catapult Canard cc pair Catapult Canard-Is runi ns 6-in wingspan larger 8-in version flies longer Designer Conover updated original 1943 design slightly nineties Correct launch stance 8-in-span Catapult Canard-I rubber stretched about 50 percent actual launch Proper loading technique Using 10-in stick 10-in loop Ia-in rubber 6-in-span CC-I almost overkill glue Spread thin layer both sides add second coat about 15 minutes later Use plan layout set proper angles Just sight along wing placed edge over plan Its easy quick 5 Carefully draw fuselage pattern 3/33 balsa sheet Its important get angle decalage between wings correct best performance Round fuselage corners slightly soft used piece fine sandpaper keep airfoil flat add 3/33 gripper after rear wing has glued gripper keeps fingers disturbing rudder adjustment 6 Glue pin both wings place looking straight dry 7 Carefully cut fin firm C-grain 132 balsa sheet fin will quite fragile narrow front part until has glued place Taper structure top rear rudder area Make sure glue straight fuselage centerline cabin can drawn fin ball-point pen before assembly impressive effect try simulating aluminum foil after assembly 8 Note thin glue skin dihedral joints nose wing leading edges Thin some Sigment acetone thinner achieve Paint glue small brush neatest job Continued page 179 August 1992 83 FF Catapult Canard Type Outdoor Catapult Glider Wingspan Eight inches Wing area available Recommended size rubber loop 18-inch length /s-in FAI tan rubber formed 7- 9-in loop Jake age 12 shows perfect form launching 6-in trainer 7-in catapult amazed model nibbled thermal glide Nine-year-old Amy launches gusto fourth launch ship did five quick barrel rolls rolled out top Tom age 12 launches 8-in-span glider good-sized catapult Kids built CC-Is part summer program 0123456 Inches USE THESE DWGS TO SET DIHEDRAL ANGLES AS GLUE DRIES 112 114 1 9/16 1/8 EBQHJ W ALL FLYING SURFACES SIG 8$ 10# C-GRAIN WING SPAN 8 WT ZO GRAMS 4 CONOVER MODEL WORKS AIAELJLL 7 -9 LOOP OF 1/8 RUBBER ON 9 STICK E1W1i MARKING PEN BEFORE GLUING ADD TWO COATS CLEAR AIRFOIL SECTIONS 200% UP 1 T SHEET i k CATAPULT CANARD CC-i PGM DESIGN LARRY CONOVER GLUE SKIN JULY4 1991 INK ART DOTTIE C 1/ {j ALUM FOIL BIN FR T WING 10PLUS __________________4# il/32S1 FUSELAGE 8$ 10$ 3/32 SHEET REAR WING 0 SCALE FULL SIZE 90 Model Aviation 1 3/8 1 004 POP-CAN ADJUSTER STRIPS BO1TOM ONLY 7ttit I0 -J I Li44 S MADE IN ONE PIECE AIRFOIL SHAPED THEN LINES SCORED ON BOTTOM AND DIHEDRAL IS CRACKED IN PLACE Box 1063 Lorain Ohio 44055 e 216 282-8354 16 Clipp rcraft Eti y9sqult9j Big Flying Scale Kits Over Two Foot Span *Piper Cub1795 *Stinson 1251795 *Piper PA-161795 Semi-Scale Kits C02 Rubber Power 22 Span *Taylorcraft1095 *Stinson Voyager 1095 *P0-6 Porter1095 Contest-Sport Kits * Hornet Embryo1095 * Hornet P-301695 Fits P-30 & Pee Wee Rules Outdoor Peanut Scale Kits 13 Span *Cub895 *Stinson 125895 *Vagabond895 *Farman895 *Jodel695 *Fike995 1/2 RIO Gas Electric Kits Fits Astro 035 Taylorcraft3995 Stinson 1253995 HARD TO FIND ITEMS Brown 002 Motors Accessories Over 20 Sizes Rubber Strip Japanese Tissue Super Fine Balsa Sheets & Strips Add 10% Shipping $250 Minimum Shipping CATALOG $200 Narrow uana 1St MW lx WItfl AMA UOld Sticker Servo Reversing much Tx & Narrow Band Rx work 1992 20 KHZ spacings avail EVEN 72 MHz Fregs Improved CE-9C Micro Servo $4995 SUPER-MICRO SYSTEM PRICES 72MHZ 2 OH 2 Servos237 OZ$24495 3 OH 3 Servos281 OZ$29145 4 OH 4 S3rvos325 OZ33895 5 OH 4 Servos326 OZ34995 Tx Dual Rates $1500 NE Mixer $3995 System S&H $1025 G-MARK 061 RIC ENGINES ANDI SPARES IN STOCK _I ICATALOG $100 USA $300 Foreign Add Equipment Sales Tax CalifI Prices Cash Cards 6% I//SAIl 20% DeposIt -COD August1992 91 TYPICAL GLUE SKIN ALL DIHEDRAL JOINTS AND LE OF WINGS CANNON Phone 1805t 581-5061 c SYSTEMS 262800chran5t5uIte28l Sgmg valley CA 93065I DA DIf QVSTEMS MADE IN 1/16 BAL II$ __I 177 GRIPPER drag ratio would give desired performance Note Some people mix microballoons epoxy apparently stops bleed-through problem provides lighter wing Another method coat inside face wood light coat waterbased urethane noted above Let dry use epoxy before apparently also helps using 3M 77 spray adhesive Another great product found Home Depot No dont own stock new sanding product called Rinsen Reuse NICSAND Inc stuff cloth-backed aluminum oxide bonded foam pad extra strength durability idea dust migrates through sanding surface foam backing can vacuumed washed away does clog can used over over Its available 60- 100- 150-grit use 150-grit exclusively working wings David B Fraser Scholarship Science Last month reported tragic death David Fraser crash Mooney Michael Selig coauthor Airfoils Low Speeds Soartech #8 David John Donovan sent letter telling scholarship fund named honor David Fraser family Fraser-Volpe Corp will make initial contribution fund Eligible recipients will selected student applicant pursuing studies either science engineering Memorial contributions endow fund may sent David B Fraser Scholarship Science Mr Jonathan Fraser 1335 Slayton Dr Maple Glen PA 19002 MARCS Symposium popular Madison Area RIC Societys National Sailplane Symposium scheduled October24 25 1992 will held Ramada Inn 3841 East Washington Ave Madison Wisconsin 53704 Call 608 244-2481 room reservations can arrive early usual day trip EAA Museum Oshkosh will Friday 23rd list speakers finalized write however symposium always interesting affair great windup flying season Its like Old Home Weekend Soaring set information contact Carl Mohs 5024 Lake Mendota Dr Madison WI 53705 telephone 608 238-2321 rdlConover Continued page 83 10 Brush light thinned clear dope surfaces Sand fine paper Brush second coat Dont sand gripper area need good grip Dont worry about too much weight dope adds /2 gram need strength get maximum climb slick flying surfaces Now fun begins Three reasons CC-I makes good first flying training model 1 Its easy quick build repair 2 Its teaching tool shows tenderfoots adjust flying models key early success 3 Performance outstanding Can imagine effect Star Wars climb 10 times higher kids home Adjustments flight begin doing hand glides under mentors guidance could begine balancing model vee scissors CG point indicated plan its easier just test glide add spot clay nose Some will require no clay students picnic hand gliding models city council chambers too windy outside goal should get streaking tight spiral climb rolls out top may have bend slight amount down elevon rear wing opposite glide circle model must have glide circle youll lose downwind brush Try /32 right rudder glide turn 1h2 down elevon right rear wing starting trim should give safe left bank launch right glide circle kids get see what big difference small amount trim makes model flies model comes screaming down off top 9-G dive may have bend bit up elevon both sides Newtons laws paraphrased says reaction up elevon will push side wing down flight too loopy doesnt achieve much altitude try down elevon both sides prefer adjust main rear wing rudder sodacan adjuster strips help make fine trim adjustments stay put trimming phase ideal time teach students basics flight adjustment will apply flying models build future fullscale aircraft impact like teaching young person read write properly Both can have far-reaching effects rest lives Prelaunch catapult technique Make up catapult match fliers arm length Small kids need about seven-inch loop t/s4n FAI tan rubber 9 x 14-in dowel piece hard 14-in-sq balsa Longer arms can use nine-inch 1oop nine-inch catapult 10-inch loop 10-inch stick 1oop too long model will catch flop SPECIALIST IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S 074S & 09S ALL CUSTOM & STOCK PARTS AD U 5InUInIA V OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIIT SPARK PLUGS SILK S COLORS QUALITY DOPE BRUSHES 5 & 7 LOOP 1/4 RUBBERBANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 112A TEXACO PLAYBOY SR KIT l/2A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES ORDER BY MAIL OR PHONE 619 728-4365 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING HANDLING AND INSURANCE FEE $350 STOCK ORDERS SHIPPED WITHIN 24 HRS August 1992 179 NEW PRODUCT NEW PRODUCT NEW PRODUCT NEW PRODUCT AIRFOIL DATA DISKS FOILED AGAINW Now popular demand shipping disks ready-made airfoils use FOILED AGAINIII MORE THAN 50 AIRFOIL DATA FILES ON EACH DISK IN NEW STANDARDIZED DATA FORMAT ILLUSTRATED 58-PAGE MANUAL WITH MULTIPLE PLOTS & COORDINATE DATA FOR EACH AIRFOIL Disk Selig-Donovan Eppler other Airfoils Disk B NACA Symmetric Cambered Airfoils EHRHRRH TOILED AGAIN VT 3D RI Ale ORDER YOUR COPIES NOW $2500 OVERSEAS UPPERS 53500 US PER RTSIR WATCH OUR ADS TSR NFl SOT OTHER DATA DISK RELEASES CYGNET Software 619 792-8021 3525 Del Mar Heights #2375 San Diego CA 92130 OUR REV-UP INVENTORY AVERAGES OVER 9000 PROPSIII PROMPT SHIPMENT ON VISAIMC RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF TUBING THREE BRANDS OF GLOW PLUGS HARD-TO-FIND HARDWARE 9 Add soda-can adjuster strips No 8 pin catapult attachment point Coat thinly glue BIG GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE * Superior lgniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep engines running peak performance longer * Satisfaction Guaranteed FREE SHIPPING ON ORDERS OVER $1500 SIG CHAMPION 2-STROKE PANT QUART 0% Nltromethane 5% Nitromethane$325$495 100/0 Nitromethane$395$535 150k Nitromethane$395$825 25% Nitromethane$495$795 35% Nitromethane$595$895 FUEL GALLON $995 $1295 $1495 $1695 $2295 $2795 SIG PREMIUM 4-STROKE FUEL 10% Nitromethane$1395 15% Nitromethane$1625 THE CHOICE OF CHAMPION FLYERS over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best grade money can buy also use real 100% pure Nitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels con tain 50-50 blend Bakers purest AA Castor Oil new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge yourselfPrice oobiect change wittoot notice See dealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 SIG MANUFACTURING CO Montezuma IA 50171 U U U U U I I I I I I I I U U U U U U U U U •EEEEEEEEEEEEEUU3W 180 Model Aviation space shots use 12 x 3/s-in dowel 11-in loop 1/8-jn rubber current AMA rules allow 30-in loop 1/4-in rubber mounted pole six feet high Thats overkill using brute force launching 12-in-span high-speed deltas 30 years ago spectacular dangerous CC-I will reach higher altitudes launched nine-inch loop rubber nine-inch catapult ever did highpowered deltas Its considerably safer too Launch program Grasp rear fuselage left thumb forefinger Dont touch rudder youll lose trim Hold catapult stick pointed up near lower end allow rubber loop drape palm Hold model nose up guide loop onto notch Stretch model well back hold stick high effect 700 nearly vertical launch attitude Bank craft left have right glide circle dont have launch CC-I wind fact its better fly much wind you may have chase model long distances Avoid thermal conditions too unless want risk sight airplane disappearing overhead Dont launch model direction sun Youll lose sight glare some secrets winning 1 Build two three models competition flying Expect lose thermal flights 2 Use bright colors Keep eyes exact spot model comes down Line up reference point downwind small model seldom goes far downwind think has Keep eyes search path Its easy step model weedsnot good 3 dont agree current AMA rules catapult launching combination six-foot pole 30-inch loop user friendly either spectators Contest Directors six-inch limit length launching stick hand launching restricts both small arms small models can should able maneuver nine- 12-inch stick advantage shoot-em-up contestants find /8-in rubber provides plenty power small models present specification 9 X /4-in flat loop okay larger models tends cause launching problems some small models now follow AMA rules contest flying try guidelines sport flying teaching 4 Make catapult stick /4-in 31s-in dowel Groove stick 1/4 top Loop rubber upon itself cinch up groove Use Is-in FAI tan rubber Ed Dolbys FAT Model Supplyits snappy Hold stick near bottom get some spring out along rubber 5 Experiment launch angle degree bank achieve good pullout LIGHTING SYSTEMS THE ORIGINALS. Still Best *RED 01Programmable Flashing Navigation Lights 9V$2495 *RED 02Strobe Light Adj Rate 9V$1995 *RED 03Landing Lights 48V$3995 *RED 04Mars 0Rotating Beacon Adj Rate 9 V$1995 #RED 05Marine Navigation Lights nonflashing9V$1095 *RED 06Sky Lights 18 Light Set 9 V$2495 *RED 14Big Airplane Navigation Lights 9V$2495 *RED 16Econo Landing Lights brightest 9V$1995 *RED 23Real Strobe Light true zenon strobe3V$2995 S SEE YOUR DEALER 0 SEND STAMPED ENVELOPE FOR RAM INFO unavailable locally send check money order full credit card Info cost item plus $400 $500 forelgnfor immediate shipment Include full address U PS Sorry no COD 229 E Rollins Rd d Lake Beach IL 60073 U U p U U U I I I I I I I I I I I U U U U U U U U U U U U E U U U U 5 top climb Always shoot upward high angle 6 Get copy Dave Thomburgs Old Buzzards Soaring Book want launch thermals 7 Try larger version CC-I Through miracle modem photocopiers can enlarge plan 9- 10- 11-in wingspan Larger models stay sight longer glide little better joy flying Nine-year-old Amy never built flown balsawood model brother lake brought along PGM class great things say about flying sessions taught fly six-inch CC-I club trainer fourth launch model went screeching almost straight up doing five quick barrel rolls rolled out topway up Amy awestruck Look go hollered Look go ready start building own right away Eleven-year-old Joe best launchers consistently gets highaltitude launches super flights cut off flying about 1030 because nearly lost club trainer Colorado miniboomer Twelve-year-old Jake loves little mighty midget flier Coming highaltitude two-minute flight model nipped edge thermal vortex about 30 feet up did double roll just maintained attitude its downwind leg just gotta try mighty midget CC-I Itsablast st1992 181 Catapult Canard-I Materials List /32 x 3 x 9-in medium-hard B-C balsa sheet I32 x 1 x 6114-in medium-hard balsa sheet 18-in length 11s-in flat rubber strip /4 x 9-in dowel stick Balsa cement clear dope marking pens aluminum beverage can strips clay
Edition: Model Aviation - 1992/08
Page Numbers: 82, 83, 90, 91, 179, 180, 181
Whats quick build flies 10 times higher house excites youngsters mighty midget PGM trainer thats what Larry Conover Full-size plans page 90 WANT have some high-flying fun scare puddin out strong-arm hand launch experts little catapult canard will outclimb outfly anything side Heaviside Layer So youd better have eyes like eagle legs like 1936 Olympic track star Jesse Owens Easily built evening cost about quarter mighty midget will amaze friends delight kids can still remember surprise first built flew off drawing board back high school years later decided try out group eight- 14-year-olds summer classes sponsored Silverthorne Recreation Department kids loved emtheyd built em flew like Star Wars fighter training model now step two PGM Project Grandpa Mentor educational program just another little throw-glider kids two keys success large box broad felt-tipped markers such Magic Marker pens center activity modeler/mentor student uses own creative ability put weird designs model parts before gluing done love Kids can color Construction simple having teacher/mentor close will ensure success kids can build gliders 10 easy steps Make patterns cutting out parts plan Use glue stick adhere file folder stock 2 /32 balsa sheet firm enough can cut parts sharp scissors Shape airfoils both wings before decorating plane marking pens can get square-edge wings performance will suffer use soft balsa model climbs like rocket needs strength 3 Color surfaces before gluing Model cement will disturb markers cant well markers over cement 4 Score bottom wings dihedral joints dead ball-point pen Crease-crack dihedral breaks top side wing down over sharp edge wooden block sure break joint apart Double-coat joint 82 Model Aviation Catapult Canard cc pair Catapult Canard-Is runi ns 6-in wingspan larger 8-in version flies longer Designer Conover updated original 1943 design slightly nineties Correct launch stance 8-in-span Catapult Canard-I rubber stretched about 50 percent actual launch Proper loading technique Using 10-in stick 10-in loop Ia-in rubber 6-in-span CC-I almost overkill glue Spread thin layer both sides add second coat about 15 minutes later Use plan layout set proper angles Just sight along wing placed edge over plan Its easy quick 5 Carefully draw fuselage pattern 3/33 balsa sheet Its important get angle decalage between wings correct best performance Round fuselage corners slightly soft used piece fine sandpaper keep airfoil flat add 3/33 gripper after rear wing has glued gripper keeps fingers disturbing rudder adjustment 6 Glue pin both wings place looking straight dry 7 Carefully cut fin firm C-grain 132 balsa sheet fin will quite fragile narrow front part until has glued place Taper structure top rear rudder area Make sure glue straight fuselage centerline cabin can drawn fin ball-point pen before assembly impressive effect try simulating aluminum foil after assembly 8 Note thin glue skin dihedral joints nose wing leading edges Thin some Sigment acetone thinner achieve Paint glue small brush neatest job Continued page 179 August 1992 83 FF Catapult Canard Type Outdoor Catapult Glider Wingspan Eight inches Wing area available Recommended size rubber loop 18-inch length /s-in FAI tan rubber formed 7- 9-in loop Jake age 12 shows perfect form launching 6-in trainer 7-in catapult amazed model nibbled thermal glide Nine-year-old Amy launches gusto fourth launch ship did five quick barrel rolls rolled out top Tom age 12 launches 8-in-span glider good-sized catapult Kids built CC-Is part summer program 0123456 Inches USE THESE DWGS TO SET DIHEDRAL ANGLES AS GLUE DRIES 112 114 1 9/16 1/8 EBQHJ W ALL FLYING SURFACES SIG 8$ 10# C-GRAIN WING SPAN 8 WT ZO GRAMS 4 CONOVER MODEL WORKS AIAELJLL 7 -9 LOOP OF 1/8 RUBBER ON 9 STICK E1W1i MARKING PEN BEFORE GLUING ADD TWO COATS CLEAR AIRFOIL SECTIONS 200% UP 1 T SHEET i k CATAPULT CANARD CC-i PGM DESIGN LARRY CONOVER GLUE SKIN JULY4 1991 INK ART DOTTIE C 1/ {j ALUM FOIL BIN FR T WING 10PLUS __________________4# il/32S1 FUSELAGE 8$ 10$ 3/32 SHEET REAR WING 0 SCALE FULL SIZE 90 Model Aviation 1 3/8 1 004 POP-CAN ADJUSTER STRIPS BO1TOM ONLY 7ttit I0 -J I Li44 S MADE IN ONE PIECE AIRFOIL SHAPED THEN LINES SCORED ON BOTTOM AND DIHEDRAL IS CRACKED IN PLACE Box 1063 Lorain Ohio 44055 e 216 282-8354 16 Clipp rcraft Eti y9sqult9j Big Flying Scale Kits Over Two Foot Span *Piper Cub1795 *Stinson 1251795 *Piper PA-161795 Semi-Scale Kits C02 Rubber Power 22 Span *Taylorcraft1095 *Stinson Voyager 1095 *P0-6 Porter1095 Contest-Sport Kits * Hornet Embryo1095 * Hornet P-301695 Fits P-30 & Pee Wee Rules Outdoor Peanut Scale Kits 13 Span *Cub895 *Stinson 125895 *Vagabond895 *Farman895 *Jodel695 *Fike995 1/2 RIO Gas Electric Kits Fits Astro 035 Taylorcraft3995 Stinson 1253995 HARD TO FIND ITEMS Brown 002 Motors Accessories Over 20 Sizes Rubber Strip Japanese Tissue Super Fine Balsa Sheets & Strips Add 10% Shipping $250 Minimum Shipping CATALOG $200 Narrow uana 1St MW lx WItfl AMA UOld Sticker Servo Reversing much Tx & Narrow Band Rx work 1992 20 KHZ spacings avail EVEN 72 MHz Fregs Improved CE-9C Micro Servo $4995 SUPER-MICRO SYSTEM PRICES 72MHZ 2 OH 2 Servos237 OZ$24495 3 OH 3 Servos281 OZ$29145 4 OH 4 S3rvos325 OZ33895 5 OH 4 Servos326 OZ34995 Tx Dual Rates $1500 NE Mixer $3995 System S&H $1025 G-MARK 061 RIC ENGINES ANDI SPARES IN STOCK _I ICATALOG $100 USA $300 Foreign Add Equipment Sales Tax CalifI Prices Cash Cards 6% I//SAIl 20% DeposIt -COD August1992 91 TYPICAL GLUE SKIN ALL DIHEDRAL JOINTS AND LE OF WINGS CANNON Phone 1805t 581-5061 c SYSTEMS 262800chran5t5uIte28l Sgmg valley CA 93065I DA DIf QVSTEMS MADE IN 1/16 BAL II$ __I 177 GRIPPER drag ratio would give desired performance Note Some people mix microballoons epoxy apparently stops bleed-through problem provides lighter wing Another method coat inside face wood light coat waterbased urethane noted above Let dry use epoxy before apparently also helps using 3M 77 spray adhesive Another great product found Home Depot No dont own stock new sanding product called Rinsen Reuse NICSAND Inc stuff cloth-backed aluminum oxide bonded foam pad extra strength durability idea dust migrates through sanding surface foam backing can vacuumed washed away does clog can used over over Its available 60- 100- 150-grit use 150-grit exclusively working wings David B Fraser Scholarship Science Last month reported tragic death David Fraser crash Mooney Michael Selig coauthor Airfoils Low Speeds Soartech #8 David John Donovan sent letter telling scholarship fund named honor David Fraser family Fraser-Volpe Corp will make initial contribution fund Eligible recipients will selected student applicant pursuing studies either science engineering Memorial contributions endow fund may sent David B Fraser Scholarship Science Mr Jonathan Fraser 1335 Slayton Dr Maple Glen PA 19002 MARCS Symposium popular Madison Area RIC Societys National Sailplane Symposium scheduled October24 25 1992 will held Ramada Inn 3841 East Washington Ave Madison Wisconsin 53704 Call 608 244-2481 room reservations can arrive early usual day trip EAA Museum Oshkosh will Friday 23rd list speakers finalized write however symposium always interesting affair great windup flying season Its like Old Home Weekend Soaring set information contact Carl Mohs 5024 Lake Mendota Dr Madison WI 53705 telephone 608 238-2321 rdlConover Continued page 83 10 Brush light thinned clear dope surfaces Sand fine paper Brush second coat Dont sand gripper area need good grip Dont worry about too much weight dope adds /2 gram need strength get maximum climb slick flying surfaces Now fun begins Three reasons CC-I makes good first flying training model 1 Its easy quick build repair 2 Its teaching tool shows tenderfoots adjust flying models key early success 3 Performance outstanding Can imagine effect Star Wars climb 10 times higher kids home Adjustments flight begin doing hand glides under mentors guidance could begine balancing model vee scissors CG point indicated plan its easier just test glide add spot clay nose Some will require no clay students picnic hand gliding models city council chambers too windy outside goal should get streaking tight spiral climb rolls out top may have bend slight amount down elevon rear wing opposite glide circle model must have glide circle youll lose downwind brush Try /32 right rudder glide turn 1h2 down elevon right rear wing starting trim should give safe left bank launch right glide circle kids get see what big difference small amount trim makes model flies model comes screaming down off top 9-G dive may have bend bit up elevon both sides Newtons laws paraphrased says reaction up elevon will push side wing down flight too loopy doesnt achieve much altitude try down elevon both sides prefer adjust main rear wing rudder sodacan adjuster strips help make fine trim adjustments stay put trimming phase ideal time teach students basics flight adjustment will apply flying models build future fullscale aircraft impact like teaching young person read write properly Both can have far-reaching effects rest lives Prelaunch catapult technique Make up catapult match fliers arm length Small kids need about seven-inch loop t/s4n FAI tan rubber 9 x 14-in dowel piece hard 14-in-sq balsa Longer arms can use nine-inch 1oop nine-inch catapult 10-inch loop 10-inch stick 1oop too long model will catch flop SPECIALIST IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S 074S & 09S ALL CUSTOM & STOCK PARTS AD U 5InUInIA V OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIIT SPARK PLUGS SILK S COLORS QUALITY DOPE BRUSHES 5 & 7 LOOP 1/4 RUBBERBANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 112A TEXACO PLAYBOY SR KIT l/2A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES ORDER BY MAIL OR PHONE 619 728-4365 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING HANDLING AND INSURANCE FEE $350 STOCK ORDERS SHIPPED WITHIN 24 HRS August 1992 179 NEW PRODUCT NEW PRODUCT NEW PRODUCT NEW PRODUCT AIRFOIL DATA DISKS FOILED AGAINW Now popular demand shipping disks ready-made airfoils use FOILED AGAINIII MORE THAN 50 AIRFOIL DATA FILES ON EACH DISK IN NEW STANDARDIZED DATA FORMAT ILLUSTRATED 58-PAGE MANUAL WITH MULTIPLE PLOTS & COORDINATE DATA FOR EACH AIRFOIL Disk Selig-Donovan Eppler other Airfoils Disk B NACA Symmetric Cambered Airfoils EHRHRRH TOILED AGAIN VT 3D RI Ale ORDER YOUR COPIES NOW $2500 OVERSEAS UPPERS 53500 US PER RTSIR WATCH OUR ADS TSR NFl SOT OTHER DATA DISK RELEASES CYGNET Software 619 792-8021 3525 Del Mar Heights #2375 San Diego CA 92130 OUR REV-UP INVENTORY AVERAGES OVER 9000 PROPSIII PROMPT SHIPMENT ON VISAIMC RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF TUBING THREE BRANDS OF GLOW PLUGS HARD-TO-FIND HARDWARE 9 Add soda-can adjuster strips No 8 pin catapult attachment point Coat thinly glue BIG GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE * Superior lgniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep engines running peak performance longer * Satisfaction Guaranteed FREE SHIPPING ON ORDERS OVER $1500 SIG CHAMPION 2-STROKE PANT QUART 0% Nltromethane 5% Nitromethane$325$495 100/0 Nitromethane$395$535 150k Nitromethane$395$825 25% Nitromethane$495$795 35% Nitromethane$595$895 FUEL GALLON $995 $1295 $1495 $1695 $2295 $2795 SIG PREMIUM 4-STROKE FUEL 10% Nitromethane$1395 15% Nitromethane$1625 THE CHOICE OF CHAMPION FLYERS over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best grade money can buy also use real 100% pure Nitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels con tain 50-50 blend Bakers purest AA Castor Oil new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge yourselfPrice oobiect change wittoot notice See dealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 SIG MANUFACTURING CO Montezuma IA 50171 U U U U U I I I I I I I I U U U U U U U U U •EEEEEEEEEEEEEUU3W 180 Model Aviation space shots use 12 x 3/s-in dowel 11-in loop 1/8-jn rubber current AMA rules allow 30-in loop 1/4-in rubber mounted pole six feet high Thats overkill using brute force launching 12-in-span high-speed deltas 30 years ago spectacular dangerous CC-I will reach higher altitudes launched nine-inch loop rubber nine-inch catapult ever did highpowered deltas Its considerably safer too Launch program Grasp rear fuselage left thumb forefinger Dont touch rudder youll lose trim Hold catapult stick pointed up near lower end allow rubber loop drape palm Hold model nose up guide loop onto notch Stretch model well back hold stick high effect 700 nearly vertical launch attitude Bank craft left have right glide circle dont have launch CC-I wind fact its better fly much wind you may have chase model long distances Avoid thermal conditions too unless want risk sight airplane disappearing overhead Dont launch model direction sun Youll lose sight glare some secrets winning 1 Build two three models competition flying Expect lose thermal flights 2 Use bright colors Keep eyes exact spot model comes down Line up reference point downwind small model seldom goes far downwind think has Keep eyes search path Its easy step model weedsnot good 3 dont agree current AMA rules catapult launching combination six-foot pole 30-inch loop user friendly either spectators Contest Directors six-inch limit length launching stick hand launching restricts both small arms small models can should able maneuver nine- 12-inch stick advantage shoot-em-up contestants find /8-in rubber provides plenty power small models present specification 9 X /4-in flat loop okay larger models tends cause launching problems some small models now follow AMA rules contest flying try guidelines sport flying teaching 4 Make catapult stick /4-in 31s-in dowel Groove stick 1/4 top Loop rubber upon itself cinch up groove Use Is-in FAI tan rubber Ed Dolbys FAT Model Supplyits snappy Hold stick near bottom get some spring out along rubber 5 Experiment launch angle degree bank achieve good pullout LIGHTING SYSTEMS THE ORIGINALS. Still Best *RED 01Programmable Flashing Navigation Lights 9V$2495 *RED 02Strobe Light Adj Rate 9V$1995 *RED 03Landing Lights 48V$3995 *RED 04Mars 0Rotating Beacon Adj Rate 9 V$1995 #RED 05Marine Navigation Lights nonflashing9V$1095 *RED 06Sky Lights 18 Light Set 9 V$2495 *RED 14Big Airplane Navigation Lights 9V$2495 *RED 16Econo Landing Lights brightest 9V$1995 *RED 23Real Strobe Light true zenon strobe3V$2995 S SEE YOUR DEALER 0 SEND STAMPED ENVELOPE FOR RAM INFO unavailable locally send check money order full credit card Info cost item plus $400 $500 forelgnfor immediate shipment Include full address U PS Sorry no COD 229 E Rollins Rd d Lake Beach IL 60073 U U p U U U I I I I I I I I I I I U U U U U U U U U U U U E U U U U 5 top climb Always shoot upward high angle 6 Get copy Dave Thomburgs Old Buzzards Soaring Book want launch thermals 7 Try larger version CC-I Through miracle modem photocopiers can enlarge plan 9- 10- 11-in wingspan Larger models stay sight longer glide little better joy flying Nine-year-old Amy never built flown balsawood model brother lake brought along PGM class great things say about flying sessions taught fly six-inch CC-I club trainer fourth launch model went screeching almost straight up doing five quick barrel rolls rolled out topway up Amy awestruck Look go hollered Look go ready start building own right away Eleven-year-old Joe best launchers consistently gets highaltitude launches super flights cut off flying about 1030 because nearly lost club trainer Colorado miniboomer Twelve-year-old Jake loves little mighty midget flier Coming highaltitude two-minute flight model nipped edge thermal vortex about 30 feet up did double roll just maintained attitude its downwind leg just gotta try mighty midget CC-I Itsablast st1992 181 Catapult Canard-I Materials List /32 x 3 x 9-in medium-hard B-C balsa sheet I32 x 1 x 6114-in medium-hard balsa sheet 18-in length 11s-in flat rubber strip /4 x 9-in dowel stick Balsa cement clear dope marking pens aluminum beverage can strips clay
Edition: Model Aviation - 1992/08
Page Numbers: 82, 83, 90, 91, 179, 180, 181
Whats quick build flies 10 times higher house excites youngsters mighty midget PGM trainer thats what Larry Conover Full-size plans page 90 WANT have some high-flying fun scare puddin out strong-arm hand launch experts little catapult canard will outclimb outfly anything side Heaviside Layer So youd better have eyes like eagle legs like 1936 Olympic track star Jesse Owens Easily built evening cost about quarter mighty midget will amaze friends delight kids can still remember surprise first built flew off drawing board back high school years later decided try out group eight- 14-year-olds summer classes sponsored Silverthorne Recreation Department kids loved emtheyd built em flew like Star Wars fighter training model now step two PGM Project Grandpa Mentor educational program just another little throw-glider kids two keys success large box broad felt-tipped markers such Magic Marker pens center activity modeler/mentor student uses own creative ability put weird designs model parts before gluing done love Kids can color Construction simple having teacher/mentor close will ensure success kids can build gliders 10 easy steps Make patterns cutting out parts plan Use glue stick adhere file folder stock 2 /32 balsa sheet firm enough can cut parts sharp scissors Shape airfoils both wings before decorating plane marking pens can get square-edge wings performance will suffer use soft balsa model climbs like rocket needs strength 3 Color surfaces before gluing Model cement will disturb markers cant well markers over cement 4 Score bottom wings dihedral joints dead ball-point pen Crease-crack dihedral breaks top side wing down over sharp edge wooden block sure break joint apart Double-coat joint 82 Model Aviation Catapult Canard cc pair Catapult Canard-Is runi ns 6-in wingspan larger 8-in version flies longer Designer Conover updated original 1943 design slightly nineties Correct launch stance 8-in-span Catapult Canard-I rubber stretched about 50 percent actual launch Proper loading technique Using 10-in stick 10-in loop Ia-in rubber 6-in-span CC-I almost overkill glue Spread thin layer both sides add second coat about 15 minutes later Use plan layout set proper angles Just sight along wing placed edge over plan Its easy quick 5 Carefully draw fuselage pattern 3/33 balsa sheet Its important get angle decalage between wings correct best performance Round fuselage corners slightly soft used piece fine sandpaper keep airfoil flat add 3/33 gripper after rear wing has glued gripper keeps fingers disturbing rudder adjustment 6 Glue pin both wings place looking straight dry 7 Carefully cut fin firm C-grain 132 balsa sheet fin will quite fragile narrow front part until has glued place Taper structure top rear rudder area Make sure glue straight fuselage centerline cabin can drawn fin ball-point pen before assembly impressive effect try simulating aluminum foil after assembly 8 Note thin glue skin dihedral joints nose wing leading edges Thin some Sigment acetone thinner achieve Paint glue small brush neatest job Continued page 179 August 1992 83 FF Catapult Canard Type Outdoor Catapult Glider Wingspan Eight inches Wing area available Recommended size rubber loop 18-inch length /s-in FAI tan rubber formed 7- 9-in loop Jake age 12 shows perfect form launching 6-in trainer 7-in catapult amazed model nibbled thermal glide Nine-year-old Amy launches gusto fourth launch ship did five quick barrel rolls rolled out top Tom age 12 launches 8-in-span glider good-sized catapult Kids built CC-Is part summer program 0123456 Inches USE THESE DWGS TO SET DIHEDRAL ANGLES AS GLUE DRIES 112 114 1 9/16 1/8 EBQHJ W ALL FLYING SURFACES SIG 8$ 10# C-GRAIN WING SPAN 8 WT ZO GRAMS 4 CONOVER MODEL WORKS AIAELJLL 7 -9 LOOP OF 1/8 RUBBER ON 9 STICK E1W1i MARKING PEN BEFORE GLUING ADD TWO COATS CLEAR AIRFOIL SECTIONS 200% UP 1 T SHEET i k CATAPULT CANARD CC-i PGM DESIGN LARRY CONOVER GLUE SKIN JULY4 1991 INK ART DOTTIE C 1/ {j ALUM FOIL BIN FR T WING 10PLUS __________________4# il/32S1 FUSELAGE 8$ 10$ 3/32 SHEET REAR WING 0 SCALE FULL SIZE 90 Model Aviation 1 3/8 1 004 POP-CAN ADJUSTER STRIPS BO1TOM ONLY 7ttit I0 -J I Li44 S MADE IN ONE PIECE AIRFOIL SHAPED THEN LINES SCORED ON BOTTOM AND DIHEDRAL IS CRACKED IN PLACE Box 1063 Lorain Ohio 44055 e 216 282-8354 16 Clipp rcraft Eti y9sqult9j Big Flying Scale Kits Over Two Foot Span *Piper Cub1795 *Stinson 1251795 *Piper PA-161795 Semi-Scale Kits C02 Rubber Power 22 Span *Taylorcraft1095 *Stinson Voyager 1095 *P0-6 Porter1095 Contest-Sport Kits * Hornet Embryo1095 * Hornet P-301695 Fits P-30 & Pee Wee Rules Outdoor Peanut Scale Kits 13 Span *Cub895 *Stinson 125895 *Vagabond895 *Farman895 *Jodel695 *Fike995 1/2 RIO Gas Electric Kits Fits Astro 035 Taylorcraft3995 Stinson 1253995 HARD TO FIND ITEMS Brown 002 Motors Accessories Over 20 Sizes Rubber Strip Japanese Tissue Super Fine Balsa Sheets & Strips Add 10% Shipping $250 Minimum Shipping CATALOG $200 Narrow uana 1St MW lx WItfl AMA UOld Sticker Servo Reversing much Tx & Narrow Band Rx work 1992 20 KHZ spacings avail EVEN 72 MHz Fregs Improved CE-9C Micro Servo $4995 SUPER-MICRO SYSTEM PRICES 72MHZ 2 OH 2 Servos237 OZ$24495 3 OH 3 Servos281 OZ$29145 4 OH 4 S3rvos325 OZ33895 5 OH 4 Servos326 OZ34995 Tx Dual Rates $1500 NE Mixer $3995 System S&H $1025 G-MARK 061 RIC ENGINES ANDI SPARES IN STOCK _I ICATALOG $100 USA $300 Foreign Add Equipment Sales Tax CalifI Prices Cash Cards 6% I//SAIl 20% DeposIt -COD August1992 91 TYPICAL GLUE SKIN ALL DIHEDRAL JOINTS AND LE OF WINGS CANNON Phone 1805t 581-5061 c SYSTEMS 262800chran5t5uIte28l Sgmg valley CA 93065I DA DIf QVSTEMS MADE IN 1/16 BAL II$ __I 177 GRIPPER drag ratio would give desired performance Note Some people mix microballoons epoxy apparently stops bleed-through problem provides lighter wing Another method coat inside face wood light coat waterbased urethane noted above Let dry use epoxy before apparently also helps using 3M 77 spray adhesive Another great product found Home Depot No dont own stock new sanding product called Rinsen Reuse NICSAND Inc stuff cloth-backed aluminum oxide bonded foam pad extra strength durability idea dust migrates through sanding surface foam backing can vacuumed washed away does clog can used over over Its available 60- 100- 150-grit use 150-grit exclusively working wings David B Fraser Scholarship Science Last month reported tragic death David Fraser crash Mooney Michael Selig coauthor Airfoils Low Speeds Soartech #8 David John Donovan sent letter telling scholarship fund named honor David Fraser family Fraser-Volpe Corp will make initial contribution fund Eligible recipients will selected student applicant pursuing studies either science engineering Memorial contributions endow fund may sent David B Fraser Scholarship Science Mr Jonathan Fraser 1335 Slayton Dr Maple Glen PA 19002 MARCS Symposium popular Madison Area RIC Societys National Sailplane Symposium scheduled October24 25 1992 will held Ramada Inn 3841 East Washington Ave Madison Wisconsin 53704 Call 608 244-2481 room reservations can arrive early usual day trip EAA Museum Oshkosh will Friday 23rd list speakers finalized write however symposium always interesting affair great windup flying season Its like Old Home Weekend Soaring set information contact Carl Mohs 5024 Lake Mendota Dr Madison WI 53705 telephone 608 238-2321 rdlConover Continued page 83 10 Brush light thinned clear dope surfaces Sand fine paper Brush second coat Dont sand gripper area need good grip Dont worry about too much weight dope adds /2 gram need strength get maximum climb slick flying surfaces Now fun begins Three reasons CC-I makes good first flying training model 1 Its easy quick build repair 2 Its teaching tool shows tenderfoots adjust flying models key early success 3 Performance outstanding Can imagine effect Star Wars climb 10 times higher kids home Adjustments flight begin doing hand glides under mentors guidance could begine balancing model vee scissors CG point indicated plan its easier just test glide add spot clay nose Some will require no clay students picnic hand gliding models city council chambers too windy outside goal should get streaking tight spiral climb rolls out top may have bend slight amount down elevon rear wing opposite glide circle model must have glide circle youll lose downwind brush Try /32 right rudder glide turn 1h2 down elevon right rear wing starting trim should give safe left bank launch right glide circle kids get see what big difference small amount trim makes model flies model comes screaming down off top 9-G dive may have bend bit up elevon both sides Newtons laws paraphrased says reaction up elevon will push side wing down flight too loopy doesnt achieve much altitude try down elevon both sides prefer adjust main rear wing rudder sodacan adjuster strips help make fine trim adjustments stay put trimming phase ideal time teach students basics flight adjustment will apply flying models build future fullscale aircraft impact like teaching young person read write properly Both can have far-reaching effects rest lives Prelaunch catapult technique Make up catapult match fliers arm length Small kids need about seven-inch loop t/s4n FAI tan rubber 9 x 14-in dowel piece hard 14-in-sq balsa Longer arms can use nine-inch 1oop nine-inch catapult 10-inch loop 10-inch stick 1oop too long model will catch flop SPECIALIST IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S 074S & 09S ALL CUSTOM & STOCK PARTS AD U 5InUInIA V OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIIT SPARK PLUGS SILK S COLORS QUALITY DOPE BRUSHES 5 & 7 LOOP 1/4 RUBBERBANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 112A TEXACO PLAYBOY SR KIT l/2A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES ORDER BY MAIL OR PHONE 619 728-4365 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING HANDLING AND INSURANCE FEE $350 STOCK ORDERS SHIPPED WITHIN 24 HRS August 1992 179 NEW PRODUCT NEW PRODUCT NEW PRODUCT NEW PRODUCT AIRFOIL DATA DISKS FOILED AGAINW Now popular demand shipping disks ready-made airfoils use FOILED AGAINIII MORE THAN 50 AIRFOIL DATA FILES ON EACH DISK IN NEW STANDARDIZED DATA FORMAT ILLUSTRATED 58-PAGE MANUAL WITH MULTIPLE PLOTS & COORDINATE DATA FOR EACH AIRFOIL Disk Selig-Donovan Eppler other Airfoils Disk B NACA Symmetric Cambered Airfoils EHRHRRH TOILED AGAIN VT 3D RI Ale ORDER YOUR COPIES NOW $2500 OVERSEAS UPPERS 53500 US PER RTSIR WATCH OUR ADS TSR NFl SOT OTHER DATA DISK RELEASES CYGNET Software 619 792-8021 3525 Del Mar Heights #2375 San Diego CA 92130 OUR REV-UP INVENTORY AVERAGES OVER 9000 PROPSIII PROMPT SHIPMENT ON VISAIMC RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF TUBING THREE BRANDS OF GLOW PLUGS HARD-TO-FIND HARDWARE 9 Add soda-can adjuster strips No 8 pin catapult attachment point Coat thinly glue BIG GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE * Superior lgniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep engines running peak performance longer * Satisfaction Guaranteed FREE SHIPPING ON ORDERS OVER $1500 SIG CHAMPION 2-STROKE PANT QUART 0% Nltromethane 5% Nitromethane$325$495 100/0 Nitromethane$395$535 150k Nitromethane$395$825 25% Nitromethane$495$795 35% Nitromethane$595$895 FUEL GALLON $995 $1295 $1495 $1695 $2295 $2795 SIG PREMIUM 4-STROKE FUEL 10% Nitromethane$1395 15% Nitromethane$1625 THE CHOICE OF CHAMPION FLYERS over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best grade money can buy also use real 100% pure Nitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels con tain 50-50 blend Bakers purest AA Castor Oil new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge yourselfPrice oobiect change wittoot notice See dealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 SIG MANUFACTURING CO Montezuma IA 50171 U U U U U I I I I I I I I U U U U U U U U U •EEEEEEEEEEEEEUU3W 180 Model Aviation space shots use 12 x 3/s-in dowel 11-in loop 1/8-jn rubber current AMA rules allow 30-in loop 1/4-in rubber mounted pole six feet high Thats overkill using brute force launching 12-in-span high-speed deltas 30 years ago spectacular dangerous CC-I will reach higher altitudes launched nine-inch loop rubber nine-inch catapult ever did highpowered deltas Its considerably safer too Launch program Grasp rear fuselage left thumb forefinger Dont touch rudder youll lose trim Hold catapult stick pointed up near lower end allow rubber loop drape palm Hold model nose up guide loop onto notch Stretch model well back hold stick high effect 700 nearly vertical launch attitude Bank craft left have right glide circle dont have launch CC-I wind fact its better fly much wind you may have chase model long distances Avoid thermal conditions too unless want risk sight airplane disappearing overhead Dont launch model direction sun Youll lose sight glare some secrets winning 1 Build two three models competition flying Expect lose thermal flights 2 Use bright colors Keep eyes exact spot model comes down Line up reference point downwind small model seldom goes far downwind think has Keep eyes search path Its easy step model weedsnot good 3 dont agree current AMA rules catapult launching combination six-foot pole 30-inch loop user friendly either spectators Contest Directors six-inch limit length launching stick hand launching restricts both small arms small models can should able maneuver nine- 12-inch stick advantage shoot-em-up contestants find /8-in rubber provides plenty power small models present specification 9 X /4-in flat loop okay larger models tends cause launching problems some small models now follow AMA rules contest flying try guidelines sport flying teaching 4 Make catapult stick /4-in 31s-in dowel Groove stick 1/4 top Loop rubber upon itself cinch up groove Use Is-in FAI tan rubber Ed Dolbys FAT Model Supplyits snappy Hold stick near bottom get some spring out along rubber 5 Experiment launch angle degree bank achieve good pullout LIGHTING SYSTEMS THE ORIGINALS. Still Best *RED 01Programmable Flashing Navigation Lights 9V$2495 *RED 02Strobe Light Adj Rate 9V$1995 *RED 03Landing Lights 48V$3995 *RED 04Mars 0Rotating Beacon Adj Rate 9 V$1995 #RED 05Marine Navigation Lights nonflashing9V$1095 *RED 06Sky Lights 18 Light Set 9 V$2495 *RED 14Big Airplane Navigation Lights 9V$2495 *RED 16Econo Landing Lights brightest 9V$1995 *RED 23Real Strobe Light true zenon strobe3V$2995 S SEE YOUR DEALER 0 SEND STAMPED ENVELOPE FOR RAM INFO unavailable locally send check money order full credit card Info cost item plus $400 $500 forelgnfor immediate shipment Include full address U PS Sorry no COD 229 E Rollins Rd d Lake Beach IL 60073 U U p U U U I I I I I I I I I I I U U U U U U U U U U U U E U U U U 5 top climb Always shoot upward high angle 6 Get copy Dave Thomburgs Old Buzzards Soaring Book want launch thermals 7 Try larger version CC-I Through miracle modem photocopiers can enlarge plan 9- 10- 11-in wingspan Larger models stay sight longer glide little better joy flying Nine-year-old Amy never built flown balsawood model brother lake brought along PGM class great things say about flying sessions taught fly six-inch CC-I club trainer fourth launch model went screeching almost straight up doing five quick barrel rolls rolled out topway up Amy awestruck Look go hollered Look go ready start building own right away Eleven-year-old Joe best launchers consistently gets highaltitude launches super flights cut off flying about 1030 because nearly lost club trainer Colorado miniboomer Twelve-year-old Jake loves little mighty midget flier Coming highaltitude two-minute flight model nipped edge thermal vortex about 30 feet up did double roll just maintained attitude its downwind leg just gotta try mighty midget CC-I Itsablast st1992 181 Catapult Canard-I Materials List /32 x 3 x 9-in medium-hard B-C balsa sheet I32 x 1 x 6114-in medium-hard balsa sheet 18-in length 11s-in flat rubber strip /4 x 9-in dowel stick Balsa cement clear dope marking pens aluminum beverage can strips clay
Edition: Model Aviation - 1992/08
Page Numbers: 82, 83, 90, 91, 179, 180, 181
Whats quick build flies 10 times higher house excites youngsters mighty midget PGM trainer thats what Larry Conover Full-size plans page 90 WANT have some high-flying fun scare puddin out strong-arm hand launch experts little catapult canard will outclimb outfly anything side Heaviside Layer So youd better have eyes like eagle legs like 1936 Olympic track star Jesse Owens Easily built evening cost about quarter mighty midget will amaze friends delight kids can still remember surprise first built flew off drawing board back high school years later decided try out group eight- 14-year-olds summer classes sponsored Silverthorne Recreation Department kids loved emtheyd built em flew like Star Wars fighter training model now step two PGM Project Grandpa Mentor educational program just another little throw-glider kids two keys success large box broad felt-tipped markers such Magic Marker pens center activity modeler/mentor student uses own creative ability put weird designs model parts before gluing done love Kids can color Construction simple having teacher/mentor close will ensure success kids can build gliders 10 easy steps Make patterns cutting out parts plan Use glue stick adhere file folder stock 2 /32 balsa sheet firm enough can cut parts sharp scissors Shape airfoils both wings before decorating plane marking pens can get square-edge wings performance will suffer use soft balsa model climbs like rocket needs strength 3 Color surfaces before gluing Model cement will disturb markers cant well markers over cement 4 Score bottom wings dihedral joints dead ball-point pen Crease-crack dihedral breaks top side wing down over sharp edge wooden block sure break joint apart Double-coat joint 82 Model Aviation Catapult Canard cc pair Catapult Canard-Is runi ns 6-in wingspan larger 8-in version flies longer Designer Conover updated original 1943 design slightly nineties Correct launch stance 8-in-span Catapult Canard-I rubber stretched about 50 percent actual launch Proper loading technique Using 10-in stick 10-in loop Ia-in rubber 6-in-span CC-I almost overkill glue Spread thin layer both sides add second coat about 15 minutes later Use plan layout set proper angles Just sight along wing placed edge over plan Its easy quick 5 Carefully draw fuselage pattern 3/33 balsa sheet Its important get angle decalage between wings correct best performance Round fuselage corners slightly soft used piece fine sandpaper keep airfoil flat add 3/33 gripper after rear wing has glued gripper keeps fingers disturbing rudder adjustment 6 Glue pin both wings place looking straight dry 7 Carefully cut fin firm C-grain 132 balsa sheet fin will quite fragile narrow front part until has glued place Taper structure top rear rudder area Make sure glue straight fuselage centerline cabin can drawn fin ball-point pen before assembly impressive effect try simulating aluminum foil after assembly 8 Note thin glue skin dihedral joints nose wing leading edges Thin some Sigment acetone thinner achieve Paint glue small brush neatest job Continued page 179 August 1992 83 FF Catapult Canard Type Outdoor Catapult Glider Wingspan Eight inches Wing area available Recommended size rubber loop 18-inch length /s-in FAI tan rubber formed 7- 9-in loop Jake age 12 shows perfect form launching 6-in trainer 7-in catapult amazed model nibbled thermal glide Nine-year-old Amy launches gusto fourth launch ship did five quick barrel rolls rolled out top Tom age 12 launches 8-in-span glider good-sized catapult Kids built CC-Is part summer program 0123456 Inches USE THESE DWGS TO SET DIHEDRAL ANGLES AS GLUE DRIES 112 114 1 9/16 1/8 EBQHJ W ALL FLYING SURFACES SIG 8$ 10# C-GRAIN WING SPAN 8 WT ZO GRAMS 4 CONOVER MODEL WORKS AIAELJLL 7 -9 LOOP OF 1/8 RUBBER ON 9 STICK E1W1i MARKING PEN BEFORE GLUING ADD TWO COATS CLEAR AIRFOIL SECTIONS 200% UP 1 T SHEET i k CATAPULT CANARD CC-i PGM DESIGN LARRY CONOVER GLUE SKIN JULY4 1991 INK ART DOTTIE C 1/ {j ALUM FOIL BIN FR T WING 10PLUS __________________4# il/32S1 FUSELAGE 8$ 10$ 3/32 SHEET REAR WING 0 SCALE FULL SIZE 90 Model Aviation 1 3/8 1 004 POP-CAN ADJUSTER STRIPS BO1TOM ONLY 7ttit I0 -J I Li44 S MADE IN ONE PIECE AIRFOIL SHAPED THEN LINES SCORED ON BOTTOM AND DIHEDRAL IS CRACKED IN PLACE Box 1063 Lorain Ohio 44055 e 216 282-8354 16 Clipp rcraft Eti y9sqult9j Big Flying Scale Kits Over Two Foot Span *Piper Cub1795 *Stinson 1251795 *Piper PA-161795 Semi-Scale Kits C02 Rubber Power 22 Span *Taylorcraft1095 *Stinson Voyager 1095 *P0-6 Porter1095 Contest-Sport Kits * Hornet Embryo1095 * Hornet P-301695 Fits P-30 & Pee Wee Rules Outdoor Peanut Scale Kits 13 Span *Cub895 *Stinson 125895 *Vagabond895 *Farman895 *Jodel695 *Fike995 1/2 RIO Gas Electric Kits Fits Astro 035 Taylorcraft3995 Stinson 1253995 HARD TO FIND ITEMS Brown 002 Motors Accessories Over 20 Sizes Rubber Strip Japanese Tissue Super Fine Balsa Sheets & Strips Add 10% Shipping $250 Minimum Shipping CATALOG $200 Narrow uana 1St MW lx WItfl AMA UOld Sticker Servo Reversing much Tx & Narrow Band Rx work 1992 20 KHZ spacings avail EVEN 72 MHz Fregs Improved CE-9C Micro Servo $4995 SUPER-MICRO SYSTEM PRICES 72MHZ 2 OH 2 Servos237 OZ$24495 3 OH 3 Servos281 OZ$29145 4 OH 4 S3rvos325 OZ33895 5 OH 4 Servos326 OZ34995 Tx Dual Rates $1500 NE Mixer $3995 System S&H $1025 G-MARK 061 RIC ENGINES ANDI SPARES IN STOCK _I ICATALOG $100 USA $300 Foreign Add Equipment Sales Tax CalifI Prices Cash Cards 6% I//SAIl 20% DeposIt -COD August1992 91 TYPICAL GLUE SKIN ALL DIHEDRAL JOINTS AND LE OF WINGS CANNON Phone 1805t 581-5061 c SYSTEMS 262800chran5t5uIte28l Sgmg valley CA 93065I DA DIf QVSTEMS MADE IN 1/16 BAL II$ __I 177 GRIPPER drag ratio would give desired performance Note Some people mix microballoons epoxy apparently stops bleed-through problem provides lighter wing Another method coat inside face wood light coat waterbased urethane noted above Let dry use epoxy before apparently also helps using 3M 77 spray adhesive Another great product found Home Depot No dont own stock new sanding product called Rinsen Reuse NICSAND Inc stuff cloth-backed aluminum oxide bonded foam pad extra strength durability idea dust migrates through sanding surface foam backing can vacuumed washed away does clog can used over over Its available 60- 100- 150-grit use 150-grit exclusively working wings David B Fraser Scholarship Science Last month reported tragic death David Fraser crash Mooney Michael Selig coauthor Airfoils Low Speeds Soartech #8 David John Donovan sent letter telling scholarship fund named honor David Fraser family Fraser-Volpe Corp will make initial contribution fund Eligible recipients will selected student applicant pursuing studies either science engineering Memorial contributions endow fund may sent David B Fraser Scholarship Science Mr Jonathan Fraser 1335 Slayton Dr Maple Glen PA 19002 MARCS Symposium popular Madison Area RIC Societys National Sailplane Symposium scheduled October24 25 1992 will held Ramada Inn 3841 East Washington Ave Madison Wisconsin 53704 Call 608 244-2481 room reservations can arrive early usual day trip EAA Museum Oshkosh will Friday 23rd list speakers finalized write however symposium always interesting affair great windup flying season Its like Old Home Weekend Soaring set information contact Carl Mohs 5024 Lake Mendota Dr Madison WI 53705 telephone 608 238-2321 rdlConover Continued page 83 10 Brush light thinned clear dope surfaces Sand fine paper Brush second coat Dont sand gripper area need good grip Dont worry about too much weight dope adds /2 gram need strength get maximum climb slick flying surfaces Now fun begins Three reasons CC-I makes good first flying training model 1 Its easy quick build repair 2 Its teaching tool shows tenderfoots adjust flying models key early success 3 Performance outstanding Can imagine effect Star Wars climb 10 times higher kids home Adjustments flight begin doing hand glides under mentors guidance could begine balancing model vee scissors CG point indicated plan its easier just test glide add spot clay nose Some will require no clay students picnic hand gliding models city council chambers too windy outside goal should get streaking tight spiral climb rolls out top may have bend slight amount down elevon rear wing opposite glide circle model must have glide circle youll lose downwind brush Try /32 right rudder glide turn 1h2 down elevon right rear wing starting trim should give safe left bank launch right glide circle kids get see what big difference small amount trim makes model flies model comes screaming down off top 9-G dive may have bend bit up elevon both sides Newtons laws paraphrased says reaction up elevon will push side wing down flight too loopy doesnt achieve much altitude try down elevon both sides prefer adjust main rear wing rudder sodacan adjuster strips help make fine trim adjustments stay put trimming phase ideal time teach students basics flight adjustment will apply flying models build future fullscale aircraft impact like teaching young person read write properly Both can have far-reaching effects rest lives Prelaunch catapult technique Make up catapult match fliers arm length Small kids need about seven-inch loop t/s4n FAI tan rubber 9 x 14-in dowel piece hard 14-in-sq balsa Longer arms can use nine-inch 1oop nine-inch catapult 10-inch loop 10-inch stick 1oop too long model will catch flop SPECIALIST IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S 074S & 09S ALL CUSTOM & STOCK PARTS AD U 5InUInIA V OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIIT SPARK PLUGS SILK S COLORS QUALITY DOPE BRUSHES 5 & 7 LOOP 1/4 RUBBERBANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 112A TEXACO PLAYBOY SR KIT l/2A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES ORDER BY MAIL OR PHONE 619 728-4365 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING HANDLING AND INSURANCE FEE $350 STOCK ORDERS SHIPPED WITHIN 24 HRS August 1992 179 NEW PRODUCT NEW PRODUCT NEW PRODUCT NEW PRODUCT AIRFOIL DATA DISKS FOILED AGAINW Now popular demand shipping disks ready-made airfoils use FOILED AGAINIII MORE THAN 50 AIRFOIL DATA FILES ON EACH DISK IN NEW STANDARDIZED DATA FORMAT ILLUSTRATED 58-PAGE MANUAL WITH MULTIPLE PLOTS & COORDINATE DATA FOR EACH AIRFOIL Disk Selig-Donovan Eppler other Airfoils Disk B NACA Symmetric Cambered Airfoils EHRHRRH TOILED AGAIN VT 3D RI Ale ORDER YOUR COPIES NOW $2500 OVERSEAS UPPERS 53500 US PER RTSIR WATCH OUR ADS TSR NFl SOT OTHER DATA DISK RELEASES CYGNET Software 619 792-8021 3525 Del Mar Heights #2375 San Diego CA 92130 OUR REV-UP INVENTORY AVERAGES OVER 9000 PROPSIII PROMPT SHIPMENT ON VISAIMC RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF TUBING THREE BRANDS OF GLOW PLUGS HARD-TO-FIND HARDWARE 9 Add soda-can adjuster strips No 8 pin catapult attachment point Coat thinly glue BIG GLOW FUEL MANUFACTURED WITH THE PUREST FINEST QUALITY INGREDIENTS AVAILABLE * Superior lgniters Improve starting idle acceleration Youll notice power bargain fuels * Special Detergents Promote clean burning prevent residue buildup * Rust Inhibitors Protect engines corrosion After run oil needed engines * Film Strength Additives Increase lubricity provide extra lean run protection * Anti-Wear Additives Help keep engines running peak performance longer * Satisfaction Guaranteed FREE SHIPPING ON ORDERS OVER $1500 SIG CHAMPION 2-STROKE PANT QUART 0% Nltromethane 5% Nitromethane$325$495 100/0 Nitromethane$395$535 150k Nitromethane$395$825 25% Nitromethane$495$795 35% Nitromethane$595$895 FUEL GALLON $995 $1295 $1495 $1695 $2295 $2795 SIG PREMIUM 4-STROKE FUEL 10% Nitromethane$1395 15% Nitromethane$1625 THE CHOICE OF CHAMPION FLYERS over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure very best grade money can buy also use real 100% pure Nitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels con tain 50-50 blend Bakers purest AA Castor Oil new improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge yourselfPrice oobiect change wittoot notice See dealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 SIG MANUFACTURING CO Montezuma IA 50171 U U U U U I I I I I I I I U U U U U U U U U •EEEEEEEEEEEEEUU3W 180 Model Aviation space shots use 12 x 3/s-in dowel 11-in loop 1/8-jn rubber current AMA rules allow 30-in loop 1/4-in rubber mounted pole six feet high Thats overkill using brute force launching 12-in-span high-speed deltas 30 years ago spectacular dangerous CC-I will reach higher altitudes launched nine-inch loop rubber nine-inch catapult ever did highpowered deltas Its considerably safer too Launch program Grasp rear fuselage left thumb forefinger Dont touch rudder youll lose trim Hold catapult stick pointed up near lower end allow rubber loop drape palm Hold model nose up guide loop onto notch Stretch model well back hold stick high effect 700 nearly vertical launch attitude Bank craft left have right glide circle dont have launch CC-I wind fact its better fly much wind you may have chase model long distances Avoid thermal conditions too unless want risk sight airplane disappearing overhead Dont launch model direction sun Youll lose sight glare some secrets winning 1 Build two three models competition flying Expect lose thermal flights 2 Use bright colors Keep eyes exact spot model comes down Line up reference point downwind small model seldom goes far downwind think has Keep eyes search path Its easy step model weedsnot good 3 dont agree current AMA rules catapult launching combination six-foot pole 30-inch loop user friendly either spectators Contest Directors six-inch limit length launching stick hand launching restricts both small arms small models can should able maneuver nine- 12-inch stick advantage shoot-em-up contestants find /8-in rubber provides plenty power small models present specification 9 X /4-in flat loop okay larger models tends cause launching problems some small models now follow AMA rules contest flying try guidelines sport flying teaching 4 Make catapult stick /4-in 31s-in dowel Groove stick 1/4 top Loop rubber upon itself cinch up groove Use Is-in FAI tan rubber Ed Dolbys FAT Model Supplyits snappy Hold stick near bottom get some spring out along rubber 5 Experiment launch angle degree bank achieve good pullout LIGHTING SYSTEMS THE ORIGINALS. Still Best *RED 01Programmable Flashing Navigation Lights 9V$2495 *RED 02Strobe Light Adj Rate 9V$1995 *RED 03Landing Lights 48V$3995 *RED 04Mars 0Rotating Beacon Adj Rate 9 V$1995 #RED 05Marine Navigation Lights nonflashing9V$1095 *RED 06Sky Lights 18 Light Set 9 V$2495 *RED 14Big Airplane Navigation Lights 9V$2495 *RED 16Econo Landing Lights brightest 9V$1995 *RED 23Real Strobe Light true zenon strobe3V$2995 S SEE YOUR DEALER 0 SEND STAMPED ENVELOPE FOR RAM INFO unavailable locally send check money order full credit card Info cost item plus $400 $500 forelgnfor immediate shipment Include full address U PS Sorry no COD 229 E Rollins Rd d Lake Beach IL 60073 U U p U U U I I I I I I I I I I I U U U U U U U U U U U U E U U U U 5 top climb Always shoot upward high angle 6 Get copy Dave Thomburgs Old Buzzards Soaring Book want launch thermals 7 Try larger version CC-I Through miracle modem photocopiers can enlarge plan 9- 10- 11-in wingspan Larger models stay sight longer glide little better joy flying Nine-year-old Amy never built flown balsawood model brother lake brought along PGM class great things say about flying sessions taught fly six-inch CC-I club trainer fourth launch model went screeching almost straight up doing five quick barrel rolls rolled out topway up Amy awestruck Look go hollered Look go ready start building own right away Eleven-year-old Joe best launchers consistently gets highaltitude launches super flights cut off flying about 1030 because nearly lost club trainer Colorado miniboomer Twelve-year-old Jake loves little mighty midget flier Coming highaltitude two-minute flight model nipped edge thermal vortex about 30 feet up did double roll just maintained attitude its downwind leg just gotta try mighty midget CC-I Itsablast st1992 181 Catapult Canard-I Materials List /32 x 3 x 9-in medium-hard B-C balsa sheet I32 x 1 x 6114-in medium-hard balsa sheet 18-in length 11s-in flat rubber strip /4 x 9-in dowel stick Balsa cement clear dope marking pens aluminum beverage can strips clay