The Pacemaker ailerons Bob Lane Lake Jackson TX 15 years old has K&B green head 35 aftermarket throt tle Bob says reduced dihedral half still has adverse yaw doesnt add rudder turns i1 gL fU4 2 itV / wd~e 4 4 Q 0Q~ ft CALLING SAM Society Antique Model ers members intended write little no tice reminding renew SAM membershipor join havent already K F -1 I1J g - 4 ''I' o 4AND AeoP AGEA /1/ZWY a2 7O TD 9Ni 4j~441 e Ir4A X*AC K--n 4 dY7MM s97 j Aseer F~7 /J /fa zYtfT 6#I4e J 0 zlxLL II INJNIJ done after reading current issue SAM Speaks discovering nearly 300 members have yet send 1990 dues de cided accompanying photo SAM Roya Jeffery Bobs better half exhibits Standby Old-Timer Month subject second Bob Jefferys designs appear column 62 Model Aviation Radio Control Old-Timers Dr DB Mathews 909 N Maize Rd Townhouse 734 Wichita KS 67212 No sooner sent copy last months column Dr J H Wormley Midway GA sent photos Tenton Terror ------ 40Jf 224 w4 ~AA AYYD4y Avro u nas area ot elgns 21 oz covered MonoKote set Hannah Rubber plans Write 110065 E Gledon Cir Santee CA 92071 membership application would appropri Jeffery Standby second Bob Jefferys designs featured Old-Timer Month column April 1980 RC Old-Timers column highlighted Jefferys Streamlined Cyclone like present sub ject taken 1938 Frank Zaic Year book earlier column mentioned Jefferys feats Rubber Speed events well incredible output hand-carved Gas model propsover 15000 between 1935 1939 sold several hobby shops Findley OH area quarter Bob Jeffery also qualifier both Wakefield Moffett teams 1936 equally impressive accomplishment After World War II Jeffery became involved manufacture development industrial diesel engines led eventual ownership Hancock Diesel Findley 11 oz per sq ft original Standby no lightweight sturdy attract ive design trophies important build Bomber Playboy sheer joy sport thermaling out-of-the-rut Old-Timer Standby will serve well Its available plan #4E4 Old Time Plan Service Box 90310 San Jose CA 95109 Eldon Breazier Kingman KS say about Standby letter enclosed photos Tor pretty has Bomber beat hell also needed something put 1947 McCoy 60 redhead Eldon also points out several errors Pond plans says followed Zaic drawings whenever discrep ancy arose Eldon went bit wild using en gine hes owned since 1948 also balsa left over hobby shop operated 1946 1948 student Emporia State Univer sity Forty-year-old balsa Hmmm Great ideas department recent letter SAM Continued page 171 SOCIETY OF ANTIQUE MODELERS Membership Application hereby apply membership Soci ety Antique Modelers Name Address CityState .. Zip AMA No* __________ SAM No ____ SAM Chap No ____ Circle New Renewal agree follow rules Society Antique Modelers uphold princi ples stated SAM Preamble Signed *Note Full Membership SAM requires membership Academy Model Aero nautics equivalent national organization sure put SAM number membership renewal check Send $10 Bob Dodds 209 Summerside Lane Encinitas CA 92024 AFTER YOU DID ALL THE WORK WHY LET YOUR AIRPLANE DO ALL THE FLYING INFO $300 BUILD & FLY THE miniMAX YOURSELF AWARDED Grand Champion Computer Designed3 Axis Control Reserve Grand Champion UltralightPart 103 Ultralight* Easy Construction 1989 Sun-N-Fun Fly-InWood Construction TEAM INC BOX 338M BRADYVILLE TN 37026 615 765-5397 r HAS MOVED INTO LARGER QUARTERS 21658 Cloud Way Hayward CA 94545 CAL 415 783-4868 Out CAL 800 482-8663 13OO RIC BUMP NEW 12&13 FT LONG OUTSTANDING CONTROd MORE POWER KIT $35000 NEW GENESIS N/C FLYING WING GLIDER 59 INCH WINGSPAN HAND LAUNCH CLIFF SOAR NI-START KIT $3495~2 2-3 CN 1~ere proud announce TATONE PRODUCTS CORPORATION has acquired CB ASSOCIATES PRESIDENT TATONE PRODUCTS CORP 4 FUN TO FL RUBBER POWER KITSSUPPLIES PEANUT SCALE ANDREASONPIPER CUB MUSTANG ZERO PIETENPOL LACY GIPSY MOTHCOUGER RUBBER SPORT FLYING ACE MOTH 8995 BOSTONIAN PUP $595 PRAIRIE BIRD lB $B95 ROG 1ST MODEL $295 NOSE BEARINGS BRASS WASHERS PROPS 4TO 9 RUBBER TAN DUMMY CYL CLEAR VINTAGE WHEELS 300 PLANS TISSUEMANY MORE KITS C02 ENGINES HUNGERFORD SILK & STEEL SPOKED WHEELS COMPLETE CATALOG $200 6 BOX 710399-MASANTEE CA 92072 PeckPeIj#mes TEL 619 448-1818FAX 619 448-1833 mber 1990 63 LIGHTING SYSTEMS THE ORIGINALS. Still Best #RED 01Programmable Flashing Navigation Lights$2495 #RED 02Adjustable Rate Strobe Light$1995 #RED 03Landing Lights$3995 * RED 04Adjustable Rate Mars Rotating Beacon$1995 #RED 05Marine Navigation Lights nonflashing$1095 #RED 14Big Airplane Navigation Lights$2495 #RED 16ECono Landing Lights brightest$1995 #RED 23Real Strobe Light true zenon strobe$2995 0 SEE YOUR DEALER 6 SEND STAMPED ENVELOPE FOR RAM INFO If unavailable locally send chec money order full credit card info cost item plus $200 $500 foreign immediate shipment Include full address UPS Sorry no COD Ram 4736 N Milwaukee Ave ago IL 60630 RC Scale/Foley Continued page 167 Championships must-see Scale events country As writing loca tions Nats Scalemasters have announced However Top Gun scheduled May 2-5 1991 Palm Beach Polo Club West Palm Beach FL site will best yet first-class accommodations permanent bleachers spectators super-nice field also possibility cosponsorship major airline addresses companies men tioned article Model Engineering 401 South Front Street Raleigh NC 27658 Sig Man ufacturing Co Inc PO Box 58306 Monte zuma IA 50171 RC Aerobatics/Van Putte Continued page 61 Bob did fine job once product will come Out grabs attention fliers across coun try Fliers will buy droves year after its introduced cant imagine get along Tm-Turn spinners good ex ample Romco Manufacturings Bob Obenberger brought some Tm-Turn samples Nats Lake Charles early 1980s within year spinners become standard RC Pattern now have another product breakthrough hands check Nats RC Pattern ma trix youll see top competitors years contest used APC propellers Pattern fliers fussy fickle buy what works well desert good product heartbeat bet ter comes out Last year few competitors used funnylooking APC props fliers made jokes expense curious thing happened Pattern fliers noted several top competitors using newer props Bill Cunningham Chris Lakin good examples took good hard look Thats large numbers APC props began sold de spite reports prop failures early prob lems prop failures solved havent heard such mishaps lately redesigning prop shape B-10 present C-2 version APC has improved al ready great prop propellers quiet produce remarkable thrust aircraft flight conditions P81AACn$50 8008408488001800400 SF30031S 401255 SF400418 001255 SF5001653200-001570 RESOS0523200-I1075 SF750TVC5232 ScaB 1075 3105 5p~o 4~I3216 uscoIe down side sharpness trail ing edge near prop hub usually use starter periodic hand cranking occasionally gives cut finger unless take piece 280400-grit emery cloth trailing edge near hub Thats small price pay superior prop really big bonuses using APC props beyond performance price availability Theyre like lot Pattern spe cialty items have special ordered single source outrageous prices Virtually good hobby shops have havent tried APC props should RC Old-Timers/Mathews Continued page 63 president Jim Adams mentions library ing set up Gene Wallock provide members reprints articles etc pre-WV II model publications Additionally longawaited list SAM officially approved model de signs both Gas Scale will available members makes two new reasons join society way Jim happens have drawings available two early deBolt RCsthe 1954 Over Under mdder-only design sym metrical section airfoil kit version deBolt called Sonic Cruiser Over Under intended 19 power Sonic Cruis er 29 engines drawings both show elevators brave heart priced reasonable $5 drawings avail able Jim Adams 2538 Spurgeon St Santa Ana CA 92706 Tools trade Im fortunate having long-standing source worn-out Iris scissors Kelly hemostats #25 Bard Parker handles Own lucky recommend Hobby Craft Instruments 9279 Cody Overland Park KS 66214 tel 1-913/492-1898 source new reasonably priced surgical struments havent used good knife till youve used #25 blade No 4 handle RC Scale Duration Bob Lonseth has discovered some additions list eligible designs Unlimited Scale Duration originally published Aeroneers newsletter recently printed column follows 44-in-span Eurocoupe published March 1943 Model Airplane News 48-in-span Monocoupe 90 October 1942 Air Trails 42-inspan Curtiss 0-52 published Model Airplane News September 1942 Aeronews editor Jim Alaback reproduced - Cesare de Robenis Cesare de Robertis Secretary SAM Italia offers pictorial guide engines East bloc Filled interesting Informa tion See text order Hobby Craft Instruments good bet reasonably priced surgical-grade tools trade Earl Stahl article recent issue 1944 Air Trails Annual excellent material anyone interested RC Scale Duration other reason new SAM library such December 1990 171 fleM Texas RC Slow Only $4495 Winner Combat Technology Now Radio Control 4 34 Channels 4 25-30 Engines 4 Adaptable 10. 15 40-45s 4 Rugged & Easy build 448 span 460 sq Dealer Inquiries Welcome Send $100 Catalog Combat Goodies OREHOU 760 Waltonvifle Rd Humnielatown PA 17036 717 566-3810 DUAL STRUT NICKEL PLATED NOSE GEAR 70 5,. /5 Ii AOL Fulls Tooling PO Box 95 Chanpaign IL 61824 urn ou p n n o artoI plotter FOILED AGAIN! PLOT AIRFOiLS IN ANY CHORD UP TO 24 INCHES MODIFY THiCKNEss CAMBER & TRAILING EDGE PLOT SKIN THiCKNESS FORsHEErED WINGS ENTER DATA EASILY VIA INTELUGENT EDITOR USER-FRIENDLY MENU-DRIVEN OPERATION INCLUDES il-PAGE ILLUSTRATED U5ER MANUAL $4500 CA 8. 0808 p185880058IZZv- nags. IBMPCIXCIAV compaUbI flflfll 8800 88fl JO US$58A conphJa enS 00 matOx 50500 SI comes, 53001 5058 0000 008092558000 525o Sr OAkS Sesa 058001 money 00W02 CYGNET Software714 496-6961 24843 Del Prado #141B Dana Point CA 92629 IMOTORID4LE4 Una breve guida alla produz o4scromotur parsi dei Pallo d a 2 22 2222 1 422 1 PRICE LIST SURGICAL GRADE INSTRUMENTS FOR MODELING AIRPLANES S RDABLE SOURCE GE SURGICAL GRADE INSTRUMENTS FOR TOE SI GD EL AND CRAFT HOBBYIST lobby ClaP 1051050101151 074 EssAy GscLnd Thssk ES 16214 II 492-5085 1 21 modela fill need hotdog show-off sport plane Knife edge take-offs flat apins snaps anything can Wing foam Fuselage Tail lite ply balsa Builds quick lands like trainer Flyingweight lOlba 184 1 l3lbs 192 Ohio OHIO SUPERSTAR PRODUCTS INC 11376 RIOGEWAY ROADKENSINGTON OHIO 44427 r 216-223-1950 great idea cant resist quoting Mr Stahls comments opening paragraph Overemphasis strictly flying designs con tests throughout country recent years has brought about unwarranted condition ne glect building flying Scale semiscale models Much favoritism must tributed desire maximum performance since little need said relative appearance neatly built Scale ship usual contest design SAM Italia Dr Ferdinando Gale Baveno aly recently sent interesting handbook about Eastern bloc engines written Cesare de Robertis Well illustrated unusual model power plants text Italian available Gale Via Marconi 10 28042 Baveno NO Italy interesting material de signs emerging SAM Italia including several magnificent construction drawings beautiful Italian Gliders pre-WW II era available B2 Streamlines PO Box 976 Olalla WA 98359 RC Pylon/Hager Continued page 64 no mediocre planes event fact well done dont know pilots selected would show two three brought along would still out trying decide Id vote collection absolutely beautiful takeoff area too narrow support four planes up heats threeplane blasts Plans have made things works widen takeoff area fourplane heats can accommodated next spring top 10 finishers Saturday 1 Randy Rich 11480 2 Richard Oliver 11701 3 Red Cranfield 12189 4 Phil Bussell 11742 5 Jim Young 11859 6 Bill Hager 11539 7 Hubert Wills 11905 8 Norm Johnson 11473 9 Dub Jets 11487 10 Sam Womack 11656 Just keep everyones attention two midairs Saturday both occurring just out turn number three Poor Bob Greer par ticipant little high-speed tangos Dave Layman Bill Hager Jerry Small tried trade little paint flight wound up getting planes dirty easier transport under seat Sundays action just hot heavy make sure moves down pat Bob Greer provided present what violent midair collision since vention prop happened about 20 ft di rectly behind above head stood cage turn number pilot lane made clock locked ac tion happened felt bad pilots crash itself right out movies another midair just out turn number three tame comparison Bob Greer/Hubert Wills fiasco earlier com pletely forgot get names pilots volved Yours Truly Bill Hager Jerry SmallBH Top five finishers Sunday 1 Dub Jett 11685 2 Red Cranfield l193 Phil Bussell 12059 4 Bill Hager 11614 5 Montie Montcrief 11620 6 Clay Gary 11509 7 Dave Layman 11381 8 Norm Johnson 11415 9 Randy Ritch 11529 10 Sam Wo mack 12772 Fast time meet 11090 turned Jerry Small lot really good close tight racing action both days can per sonally vouch quality food available heard nothing praise con dition fieldits size its location think two quotes heard often Yall have best racing facilities around grass field absolutely fantastic shape nice words made feel kinda proud field proud have small part core club members come out work event got meet some super-nice guys see some beautiful planes doin some really competitive racing besides Bob Greer Ill long time talking about Sun day midair yours Take guys put first-class race the field great shape See next month Caudimordax/Taib Continued page 71 wing lift being generated farther out root Very high aspect ratio wings demand extra strength conse quently added weight spars root particular application will demand aspect ratio provides best combi nation weight efficiency Cau dimordax aspect ratio 61 cho sen allowed convenient wing span 48 inches Styrofoam comes 2-ftwide sheetsjust right wing panel mean chord eight inches al lows 10-in root 6-in tip 60% tip/root percentage Such wing core too difficult cut trailing edge swept forward three inches lead ing edge swept back inch producing net sweep quarter-chord zero Experiments straight leading edge produced airplanes unpleasant snap rolling tendencies swept leading edge also allows easier placement spars greater lead-out sweep Eliminating high-speed stall Turning airplane too tightly causes wing stall wing forced produce lift capable producing produce lift angle attack must creased Beyond certain angle attack air flow along top wing separates wings surface becomes turbu lent causing sudden increase drag Most Combat fliers adjust controls limit turn radius order avoid stal ling Another approach use thicker blunter airfoil stalls higher Us thin does drawback ap proach course thicker airfoil has greater parasitic drag top speed reduced accordingly Caudimordax root section thick 15% tip thicker 25% relatively thicker tip airfoil ensures root will stall first turn thus reduc ing airplanes tendency drop wing tip tendency causes lateral instabil ity common high aspect ratio Combat wings Longitudinal stability An airplane does tight fast turns absolutely no use cant make go want go common problem Combat wings lack longitudinal stability turn once started will tighten up its own ac cord makes airplane unpointable therefore useless Combat air plane should also able fly straight unattended An unstable airplane will tend tighten wander out turn pilot glances away inslant common misconception sta 172 Model Aviation SPORTOBATIC 2 84 For1204cycleand 902-cycle rST 200025003000-0 PS 18 NEWOS BGX 13500
Edition: Model Aviation - 1990/12
Page Numbers: 62, 63, 171, 172
The Pacemaker ailerons Bob Lane Lake Jackson TX 15 years old has K&B green head 35 aftermarket throt tle Bob says reduced dihedral half still has adverse yaw doesnt add rudder turns i1 gL fU4 2 itV / wd~e 4 4 Q 0Q~ ft CALLING SAM Society Antique Model ers members intended write little no tice reminding renew SAM membershipor join havent already K F -1 I1J g - 4 ''I' o 4AND AeoP AGEA /1/ZWY a2 7O TD 9Ni 4j~441 e Ir4A X*AC K--n 4 dY7MM s97 j Aseer F~7 /J /fa zYtfT 6#I4e J 0 zlxLL II INJNIJ done after reading current issue SAM Speaks discovering nearly 300 members have yet send 1990 dues de cided accompanying photo SAM Roya Jeffery Bobs better half exhibits Standby Old-Timer Month subject second Bob Jefferys designs appear column 62 Model Aviation Radio Control Old-Timers Dr DB Mathews 909 N Maize Rd Townhouse 734 Wichita KS 67212 No sooner sent copy last months column Dr J H Wormley Midway GA sent photos Tenton Terror ------ 40Jf 224 w4 ~AA AYYD4y Avro u nas area ot elgns 21 oz covered MonoKote set Hannah Rubber plans Write 110065 E Gledon Cir Santee CA 92071 membership application would appropri Jeffery Standby second Bob Jefferys designs featured Old-Timer Month column April 1980 RC Old-Timers column highlighted Jefferys Streamlined Cyclone like present sub ject taken 1938 Frank Zaic Year book earlier column mentioned Jefferys feats Rubber Speed events well incredible output hand-carved Gas model propsover 15000 between 1935 1939 sold several hobby shops Findley OH area quarter Bob Jeffery also qualifier both Wakefield Moffett teams 1936 equally impressive accomplishment After World War II Jeffery became involved manufacture development industrial diesel engines led eventual ownership Hancock Diesel Findley 11 oz per sq ft original Standby no lightweight sturdy attract ive design trophies important build Bomber Playboy sheer joy sport thermaling out-of-the-rut Old-Timer Standby will serve well Its available plan #4E4 Old Time Plan Service Box 90310 San Jose CA 95109 Eldon Breazier Kingman KS say about Standby letter enclosed photos Tor pretty has Bomber beat hell also needed something put 1947 McCoy 60 redhead Eldon also points out several errors Pond plans says followed Zaic drawings whenever discrep ancy arose Eldon went bit wild using en gine hes owned since 1948 also balsa left over hobby shop operated 1946 1948 student Emporia State Univer sity Forty-year-old balsa Hmmm Great ideas department recent letter SAM Continued page 171 SOCIETY OF ANTIQUE MODELERS Membership Application hereby apply membership Soci ety Antique Modelers Name Address CityState .. Zip AMA No* __________ SAM No ____ SAM Chap No ____ Circle New Renewal agree follow rules Society Antique Modelers uphold princi ples stated SAM Preamble Signed *Note Full Membership SAM requires membership Academy Model Aero nautics equivalent national organization sure put SAM number membership renewal check Send $10 Bob Dodds 209 Summerside Lane Encinitas CA 92024 AFTER YOU DID ALL THE WORK WHY LET YOUR AIRPLANE DO ALL THE FLYING INFO $300 BUILD & FLY THE miniMAX YOURSELF AWARDED Grand Champion Computer Designed3 Axis Control Reserve Grand Champion UltralightPart 103 Ultralight* Easy Construction 1989 Sun-N-Fun Fly-InWood Construction TEAM INC BOX 338M BRADYVILLE TN 37026 615 765-5397 r HAS MOVED INTO LARGER QUARTERS 21658 Cloud Way Hayward CA 94545 CAL 415 783-4868 Out CAL 800 482-8663 13OO RIC BUMP NEW 12&13 FT LONG OUTSTANDING CONTROd MORE POWER KIT $35000 NEW GENESIS N/C FLYING WING GLIDER 59 INCH WINGSPAN HAND LAUNCH CLIFF SOAR NI-START KIT $3495~2 2-3 CN 1~ere proud announce TATONE PRODUCTS CORPORATION has acquired CB ASSOCIATES PRESIDENT TATONE PRODUCTS CORP 4 FUN TO FL RUBBER POWER KITSSUPPLIES PEANUT SCALE ANDREASONPIPER CUB MUSTANG ZERO PIETENPOL LACY GIPSY MOTHCOUGER RUBBER SPORT FLYING ACE MOTH 8995 BOSTONIAN PUP $595 PRAIRIE BIRD lB $B95 ROG 1ST MODEL $295 NOSE BEARINGS BRASS WASHERS PROPS 4TO 9 RUBBER TAN DUMMY CYL CLEAR VINTAGE WHEELS 300 PLANS TISSUEMANY MORE KITS C02 ENGINES HUNGERFORD SILK & STEEL SPOKED WHEELS COMPLETE CATALOG $200 6 BOX 710399-MASANTEE CA 92072 PeckPeIj#mes TEL 619 448-1818FAX 619 448-1833 mber 1990 63 LIGHTING SYSTEMS THE ORIGINALS. Still Best #RED 01Programmable Flashing Navigation Lights$2495 #RED 02Adjustable Rate Strobe Light$1995 #RED 03Landing Lights$3995 * RED 04Adjustable Rate Mars Rotating Beacon$1995 #RED 05Marine Navigation Lights nonflashing$1095 #RED 14Big Airplane Navigation Lights$2495 #RED 16ECono Landing Lights brightest$1995 #RED 23Real Strobe Light true zenon strobe$2995 0 SEE YOUR DEALER 6 SEND STAMPED ENVELOPE FOR RAM INFO If unavailable locally send chec money order full credit card info cost item plus $200 $500 foreign immediate shipment Include full address UPS Sorry no COD Ram 4736 N Milwaukee Ave ago IL 60630 RC Scale/Foley Continued page 167 Championships must-see Scale events country As writing loca tions Nats Scalemasters have announced However Top Gun scheduled May 2-5 1991 Palm Beach Polo Club West Palm Beach FL site will best yet first-class accommodations permanent bleachers spectators super-nice field also possibility cosponsorship major airline addresses companies men tioned article Model Engineering 401 South Front Street Raleigh NC 27658 Sig Man ufacturing Co Inc PO Box 58306 Monte zuma IA 50171 RC Aerobatics/Van Putte Continued page 61 Bob did fine job once product will come Out grabs attention fliers across coun try Fliers will buy droves year after its introduced cant imagine get along Tm-Turn spinners good ex ample Romco Manufacturings Bob Obenberger brought some Tm-Turn samples Nats Lake Charles early 1980s within year spinners become standard RC Pattern now have another product breakthrough hands check Nats RC Pattern ma trix youll see top competitors years contest used APC propellers Pattern fliers fussy fickle buy what works well desert good product heartbeat bet ter comes out Last year few competitors used funnylooking APC props fliers made jokes expense curious thing happened Pattern fliers noted several top competitors using newer props Bill Cunningham Chris Lakin good examples took good hard look Thats large numbers APC props began sold de spite reports prop failures early prob lems prop failures solved havent heard such mishaps lately redesigning prop shape B-10 present C-2 version APC has improved al ready great prop propellers quiet produce remarkable thrust aircraft flight conditions P81AACn$50 8008408488001800400 SF30031S 401255 SF400418 001255 SF5001653200-001570 RESOS0523200-I1075 SF750TVC5232 ScaB 1075 3105 5p~o 4~I3216 uscoIe down side sharpness trail ing edge near prop hub usually use starter periodic hand cranking occasionally gives cut finger unless take piece 280400-grit emery cloth trailing edge near hub Thats small price pay superior prop really big bonuses using APC props beyond performance price availability Theyre like lot Pattern spe cialty items have special ordered single source outrageous prices Virtually good hobby shops have havent tried APC props should RC Old-Timers/Mathews Continued page 63 president Jim Adams mentions library ing set up Gene Wallock provide members reprints articles etc pre-WV II model publications Additionally longawaited list SAM officially approved model de signs both Gas Scale will available members makes two new reasons join society way Jim happens have drawings available two early deBolt RCsthe 1954 Over Under mdder-only design sym metrical section airfoil kit version deBolt called Sonic Cruiser Over Under intended 19 power Sonic Cruis er 29 engines drawings both show elevators brave heart priced reasonable $5 drawings avail able Jim Adams 2538 Spurgeon St Santa Ana CA 92706 Tools trade Im fortunate having long-standing source worn-out Iris scissors Kelly hemostats #25 Bard Parker handles Own lucky recommend Hobby Craft Instruments 9279 Cody Overland Park KS 66214 tel 1-913/492-1898 source new reasonably priced surgical struments havent used good knife till youve used #25 blade No 4 handle RC Scale Duration Bob Lonseth has discovered some additions list eligible designs Unlimited Scale Duration originally published Aeroneers newsletter recently printed column follows 44-in-span Eurocoupe published March 1943 Model Airplane News 48-in-span Monocoupe 90 October 1942 Air Trails 42-inspan Curtiss 0-52 published Model Airplane News September 1942 Aeronews editor Jim Alaback reproduced - Cesare de Robenis Cesare de Robertis Secretary SAM Italia offers pictorial guide engines East bloc Filled interesting Informa tion See text order Hobby Craft Instruments good bet reasonably priced surgical-grade tools trade Earl Stahl article recent issue 1944 Air Trails Annual excellent material anyone interested RC Scale Duration other reason new SAM library such December 1990 171 fleM Texas RC Slow Only $4495 Winner Combat Technology Now Radio Control 4 34 Channels 4 25-30 Engines 4 Adaptable 10. 15 40-45s 4 Rugged & Easy build 448 span 460 sq Dealer Inquiries Welcome Send $100 Catalog Combat Goodies OREHOU 760 Waltonvifle Rd Humnielatown PA 17036 717 566-3810 DUAL STRUT NICKEL PLATED NOSE GEAR 70 5,. /5 Ii AOL Fulls Tooling PO Box 95 Chanpaign IL 61824 urn ou p n n o artoI plotter FOILED AGAIN! PLOT AIRFOiLS IN ANY CHORD UP TO 24 INCHES MODIFY THiCKNEss CAMBER & TRAILING EDGE PLOT SKIN THiCKNESS FORsHEErED WINGS ENTER DATA EASILY VIA INTELUGENT EDITOR USER-FRIENDLY MENU-DRIVEN OPERATION INCLUDES il-PAGE ILLUSTRATED U5ER MANUAL $4500 CA 8. 0808 p185880058IZZv- nags. IBMPCIXCIAV compaUbI flflfll 8800 88fl JO US$58A conphJa enS 00 matOx 50500 SI comes, 53001 5058 0000 008092558000 525o Sr OAkS Sesa 058001 money 00W02 CYGNET Software714 496-6961 24843 Del Prado #141B Dana Point CA 92629 IMOTORID4LE4 Una breve guida alla produz o4scromotur parsi dei Pallo d a 2 22 2222 1 422 1 PRICE LIST SURGICAL GRADE INSTRUMENTS FOR MODELING AIRPLANES S RDABLE SOURCE GE SURGICAL GRADE INSTRUMENTS FOR TOE SI GD EL AND CRAFT HOBBYIST lobby ClaP 1051050101151 074 EssAy GscLnd Thssk ES 16214 II 492-5085 1 21 modela fill need hotdog show-off sport plane Knife edge take-offs flat apins snaps anything can Wing foam Fuselage Tail lite ply balsa Builds quick lands like trainer Flyingweight lOlba 184 1 l3lbs 192 Ohio OHIO SUPERSTAR PRODUCTS INC 11376 RIOGEWAY ROADKENSINGTON OHIO 44427 r 216-223-1950 great idea cant resist quoting Mr Stahls comments opening paragraph Overemphasis strictly flying designs con tests throughout country recent years has brought about unwarranted condition ne glect building flying Scale semiscale models Much favoritism must tributed desire maximum performance since little need said relative appearance neatly built Scale ship usual contest design SAM Italia Dr Ferdinando Gale Baveno aly recently sent interesting handbook about Eastern bloc engines written Cesare de Robertis Well illustrated unusual model power plants text Italian available Gale Via Marconi 10 28042 Baveno NO Italy interesting material de signs emerging SAM Italia including several magnificent construction drawings beautiful Italian Gliders pre-WW II era available B2 Streamlines PO Box 976 Olalla WA 98359 RC Pylon/Hager Continued page 64 no mediocre planes event fact well done dont know pilots selected would show two three brought along would still out trying decide Id vote collection absolutely beautiful takeoff area too narrow support four planes up heats threeplane blasts Plans have made things works widen takeoff area fourplane heats can accommodated next spring top 10 finishers Saturday 1 Randy Rich 11480 2 Richard Oliver 11701 3 Red Cranfield 12189 4 Phil Bussell 11742 5 Jim Young 11859 6 Bill Hager 11539 7 Hubert Wills 11905 8 Norm Johnson 11473 9 Dub Jets 11487 10 Sam Womack 11656 Just keep everyones attention two midairs Saturday both occurring just out turn number three Poor Bob Greer par ticipant little high-speed tangos Dave Layman Bill Hager Jerry Small tried trade little paint flight wound up getting planes dirty easier transport under seat Sundays action just hot heavy make sure moves down pat Bob Greer provided present what violent midair collision since vention prop happened about 20 ft di rectly behind above head stood cage turn number pilot lane made clock locked ac tion happened felt bad pilots crash itself right out movies another midair just out turn number three tame comparison Bob Greer/Hubert Wills fiasco earlier com pletely forgot get names pilots volved Yours Truly Bill Hager Jerry SmallBH Top five finishers Sunday 1 Dub Jett 11685 2 Red Cranfield l193 Phil Bussell 12059 4 Bill Hager 11614 5 Montie Montcrief 11620 6 Clay Gary 11509 7 Dave Layman 11381 8 Norm Johnson 11415 9 Randy Ritch 11529 10 Sam Wo mack 12772 Fast time meet 11090 turned Jerry Small lot really good close tight racing action both days can per sonally vouch quality food available heard nothing praise con dition fieldits size its location think two quotes heard often Yall have best racing facilities around grass field absolutely fantastic shape nice words made feel kinda proud field proud have small part core club members come out work event got meet some super-nice guys see some beautiful planes doin some really competitive racing besides Bob Greer Ill long time talking about Sun day midair yours Take guys put first-class race the field great shape See next month Caudimordax/Taib Continued page 71 wing lift being generated farther out root Very high aspect ratio wings demand extra strength conse quently added weight spars root particular application will demand aspect ratio provides best combi nation weight efficiency Cau dimordax aspect ratio 61 cho sen allowed convenient wing span 48 inches Styrofoam comes 2-ftwide sheetsjust right wing panel mean chord eight inches al lows 10-in root 6-in tip 60% tip/root percentage Such wing core too difficult cut trailing edge swept forward three inches lead ing edge swept back inch producing net sweep quarter-chord zero Experiments straight leading edge produced airplanes unpleasant snap rolling tendencies swept leading edge also allows easier placement spars greater lead-out sweep Eliminating high-speed stall Turning airplane too tightly causes wing stall wing forced produce lift capable producing produce lift angle attack must creased Beyond certain angle attack air flow along top wing separates wings surface becomes turbu lent causing sudden increase drag Most Combat fliers adjust controls limit turn radius order avoid stal ling Another approach use thicker blunter airfoil stalls higher Us thin does drawback ap proach course thicker airfoil has greater parasitic drag top speed reduced accordingly Caudimordax root section thick 15% tip thicker 25% relatively thicker tip airfoil ensures root will stall first turn thus reduc ing airplanes tendency drop wing tip tendency causes lateral instabil ity common high aspect ratio Combat wings Longitudinal stability An airplane does tight fast turns absolutely no use cant make go want go common problem Combat wings lack longitudinal stability turn once started will tighten up its own ac cord makes airplane unpointable therefore useless Combat air plane should also able fly straight unattended An unstable airplane will tend tighten wander out turn pilot glances away inslant common misconception sta 172 Model Aviation SPORTOBATIC 2 84 For1204cycleand 902-cycle rST 200025003000-0 PS 18 NEWOS BGX 13500
Edition: Model Aviation - 1990/12
Page Numbers: 62, 63, 171, 172
The Pacemaker ailerons Bob Lane Lake Jackson TX 15 years old has K&B green head 35 aftermarket throt tle Bob says reduced dihedral half still has adverse yaw doesnt add rudder turns i1 gL fU4 2 itV / wd~e 4 4 Q 0Q~ ft CALLING SAM Society Antique Model ers members intended write little no tice reminding renew SAM membershipor join havent already K F -1 I1J g - 4 ''I' o 4AND AeoP AGEA /1/ZWY a2 7O TD 9Ni 4j~441 e Ir4A X*AC K--n 4 dY7MM s97 j Aseer F~7 /J /fa zYtfT 6#I4e J 0 zlxLL II INJNIJ done after reading current issue SAM Speaks discovering nearly 300 members have yet send 1990 dues de cided accompanying photo SAM Roya Jeffery Bobs better half exhibits Standby Old-Timer Month subject second Bob Jefferys designs appear column 62 Model Aviation Radio Control Old-Timers Dr DB Mathews 909 N Maize Rd Townhouse 734 Wichita KS 67212 No sooner sent copy last months column Dr J H Wormley Midway GA sent photos Tenton Terror ------ 40Jf 224 w4 ~AA AYYD4y Avro u nas area ot elgns 21 oz covered MonoKote set Hannah Rubber plans Write 110065 E Gledon Cir Santee CA 92071 membership application would appropri Jeffery Standby second Bob Jefferys designs featured Old-Timer Month column April 1980 RC Old-Timers column highlighted Jefferys Streamlined Cyclone like present sub ject taken 1938 Frank Zaic Year book earlier column mentioned Jefferys feats Rubber Speed events well incredible output hand-carved Gas model propsover 15000 between 1935 1939 sold several hobby shops Findley OH area quarter Bob Jeffery also qualifier both Wakefield Moffett teams 1936 equally impressive accomplishment After World War II Jeffery became involved manufacture development industrial diesel engines led eventual ownership Hancock Diesel Findley 11 oz per sq ft original Standby no lightweight sturdy attract ive design trophies important build Bomber Playboy sheer joy sport thermaling out-of-the-rut Old-Timer Standby will serve well Its available plan #4E4 Old Time Plan Service Box 90310 San Jose CA 95109 Eldon Breazier Kingman KS say about Standby letter enclosed photos Tor pretty has Bomber beat hell also needed something put 1947 McCoy 60 redhead Eldon also points out several errors Pond plans says followed Zaic drawings whenever discrep ancy arose Eldon went bit wild using en gine hes owned since 1948 also balsa left over hobby shop operated 1946 1948 student Emporia State Univer sity Forty-year-old balsa Hmmm Great ideas department recent letter SAM Continued page 171 SOCIETY OF ANTIQUE MODELERS Membership Application hereby apply membership Soci ety Antique Modelers Name Address CityState .. Zip AMA No* __________ SAM No ____ SAM Chap No ____ Circle New Renewal agree follow rules Society Antique Modelers uphold princi ples stated SAM Preamble Signed *Note Full Membership SAM requires membership Academy Model Aero nautics equivalent national organization sure put SAM number membership renewal check Send $10 Bob Dodds 209 Summerside Lane Encinitas CA 92024 AFTER YOU DID ALL THE WORK WHY LET YOUR AIRPLANE DO ALL THE FLYING INFO $300 BUILD & FLY THE miniMAX YOURSELF AWARDED Grand Champion Computer Designed3 Axis Control Reserve Grand Champion UltralightPart 103 Ultralight* Easy Construction 1989 Sun-N-Fun Fly-InWood Construction TEAM INC BOX 338M BRADYVILLE TN 37026 615 765-5397 r HAS MOVED INTO LARGER QUARTERS 21658 Cloud Way Hayward CA 94545 CAL 415 783-4868 Out CAL 800 482-8663 13OO RIC BUMP NEW 12&13 FT LONG OUTSTANDING CONTROd MORE POWER KIT $35000 NEW GENESIS N/C FLYING WING GLIDER 59 INCH WINGSPAN HAND LAUNCH CLIFF SOAR NI-START KIT $3495~2 2-3 CN 1~ere proud announce TATONE PRODUCTS CORPORATION has acquired CB ASSOCIATES PRESIDENT TATONE PRODUCTS CORP 4 FUN TO FL RUBBER POWER KITSSUPPLIES PEANUT SCALE ANDREASONPIPER CUB MUSTANG ZERO PIETENPOL LACY GIPSY MOTHCOUGER RUBBER SPORT FLYING ACE MOTH 8995 BOSTONIAN PUP $595 PRAIRIE BIRD lB $B95 ROG 1ST MODEL $295 NOSE BEARINGS BRASS WASHERS PROPS 4TO 9 RUBBER TAN DUMMY CYL CLEAR VINTAGE WHEELS 300 PLANS TISSUEMANY MORE KITS C02 ENGINES HUNGERFORD SILK & STEEL SPOKED WHEELS COMPLETE CATALOG $200 6 BOX 710399-MASANTEE CA 92072 PeckPeIj#mes TEL 619 448-1818FAX 619 448-1833 mber 1990 63 LIGHTING SYSTEMS THE ORIGINALS. Still Best #RED 01Programmable Flashing Navigation Lights$2495 #RED 02Adjustable Rate Strobe Light$1995 #RED 03Landing Lights$3995 * RED 04Adjustable Rate Mars Rotating Beacon$1995 #RED 05Marine Navigation Lights nonflashing$1095 #RED 14Big Airplane Navigation Lights$2495 #RED 16ECono Landing Lights brightest$1995 #RED 23Real Strobe Light true zenon strobe$2995 0 SEE YOUR DEALER 6 SEND STAMPED ENVELOPE FOR RAM INFO If unavailable locally send chec money order full credit card info cost item plus $200 $500 foreign immediate shipment Include full address UPS Sorry no COD Ram 4736 N Milwaukee Ave ago IL 60630 RC Scale/Foley Continued page 167 Championships must-see Scale events country As writing loca tions Nats Scalemasters have announced However Top Gun scheduled May 2-5 1991 Palm Beach Polo Club West Palm Beach FL site will best yet first-class accommodations permanent bleachers spectators super-nice field also possibility cosponsorship major airline addresses companies men tioned article Model Engineering 401 South Front Street Raleigh NC 27658 Sig Man ufacturing Co Inc PO Box 58306 Monte zuma IA 50171 RC Aerobatics/Van Putte Continued page 61 Bob did fine job once product will come Out grabs attention fliers across coun try Fliers will buy droves year after its introduced cant imagine get along Tm-Turn spinners good ex ample Romco Manufacturings Bob Obenberger brought some Tm-Turn samples Nats Lake Charles early 1980s within year spinners become standard RC Pattern now have another product breakthrough hands check Nats RC Pattern ma trix youll see top competitors years contest used APC propellers Pattern fliers fussy fickle buy what works well desert good product heartbeat bet ter comes out Last year few competitors used funnylooking APC props fliers made jokes expense curious thing happened Pattern fliers noted several top competitors using newer props Bill Cunningham Chris Lakin good examples took good hard look Thats large numbers APC props began sold de spite reports prop failures early prob lems prop failures solved havent heard such mishaps lately redesigning prop shape B-10 present C-2 version APC has improved al ready great prop propellers quiet produce remarkable thrust aircraft flight conditions P81AACn$50 8008408488001800400 SF30031S 401255 SF400418 001255 SF5001653200-001570 RESOS0523200-I1075 SF750TVC5232 ScaB 1075 3105 5p~o 4~I3216 uscoIe down side sharpness trail ing edge near prop hub usually use starter periodic hand cranking occasionally gives cut finger unless take piece 280400-grit emery cloth trailing edge near hub Thats small price pay superior prop really big bonuses using APC props beyond performance price availability Theyre like lot Pattern spe cialty items have special ordered single source outrageous prices Virtually good hobby shops have havent tried APC props should RC Old-Timers/Mathews Continued page 63 president Jim Adams mentions library ing set up Gene Wallock provide members reprints articles etc pre-WV II model publications Additionally longawaited list SAM officially approved model de signs both Gas Scale will available members makes two new reasons join society way Jim happens have drawings available two early deBolt RCsthe 1954 Over Under mdder-only design sym metrical section airfoil kit version deBolt called Sonic Cruiser Over Under intended 19 power Sonic Cruis er 29 engines drawings both show elevators brave heart priced reasonable $5 drawings avail able Jim Adams 2538 Spurgeon St Santa Ana CA 92706 Tools trade Im fortunate having long-standing source worn-out Iris scissors Kelly hemostats #25 Bard Parker handles Own lucky recommend Hobby Craft Instruments 9279 Cody Overland Park KS 66214 tel 1-913/492-1898 source new reasonably priced surgical struments havent used good knife till youve used #25 blade No 4 handle RC Scale Duration Bob Lonseth has discovered some additions list eligible designs Unlimited Scale Duration originally published Aeroneers newsletter recently printed column follows 44-in-span Eurocoupe published March 1943 Model Airplane News 48-in-span Monocoupe 90 October 1942 Air Trails 42-inspan Curtiss 0-52 published Model Airplane News September 1942 Aeronews editor Jim Alaback reproduced - Cesare de Robenis Cesare de Robertis Secretary SAM Italia offers pictorial guide engines East bloc Filled interesting Informa tion See text order Hobby Craft Instruments good bet reasonably priced surgical-grade tools trade Earl Stahl article recent issue 1944 Air Trails Annual excellent material anyone interested RC Scale Duration other reason new SAM library such December 1990 171 fleM Texas RC Slow Only $4495 Winner Combat Technology Now Radio Control 4 34 Channels 4 25-30 Engines 4 Adaptable 10. 15 40-45s 4 Rugged & Easy build 448 span 460 sq Dealer Inquiries Welcome Send $100 Catalog Combat Goodies OREHOU 760 Waltonvifle Rd Humnielatown PA 17036 717 566-3810 DUAL STRUT NICKEL PLATED NOSE GEAR 70 5,. /5 Ii AOL Fulls Tooling PO Box 95 Chanpaign IL 61824 urn ou p n n o artoI plotter FOILED AGAIN! PLOT AIRFOiLS IN ANY CHORD UP TO 24 INCHES MODIFY THiCKNEss CAMBER & TRAILING EDGE PLOT SKIN THiCKNESS FORsHEErED WINGS ENTER DATA EASILY VIA INTELUGENT EDITOR USER-FRIENDLY MENU-DRIVEN OPERATION INCLUDES il-PAGE ILLUSTRATED U5ER MANUAL $4500 CA 8. 0808 p185880058IZZv- nags. IBMPCIXCIAV compaUbI flflfll 8800 88fl JO US$58A conphJa enS 00 matOx 50500 SI comes, 53001 5058 0000 008092558000 525o Sr OAkS Sesa 058001 money 00W02 CYGNET Software714 496-6961 24843 Del Prado #141B Dana Point CA 92629 IMOTORID4LE4 Una breve guida alla produz o4scromotur parsi dei Pallo d a 2 22 2222 1 422 1 PRICE LIST SURGICAL GRADE INSTRUMENTS FOR MODELING AIRPLANES S RDABLE SOURCE GE SURGICAL GRADE INSTRUMENTS FOR TOE SI GD EL AND CRAFT HOBBYIST lobby ClaP 1051050101151 074 EssAy GscLnd Thssk ES 16214 II 492-5085 1 21 modela fill need hotdog show-off sport plane Knife edge take-offs flat apins snaps anything can Wing foam Fuselage Tail lite ply balsa Builds quick lands like trainer Flyingweight lOlba 184 1 l3lbs 192 Ohio OHIO SUPERSTAR PRODUCTS INC 11376 RIOGEWAY ROADKENSINGTON OHIO 44427 r 216-223-1950 great idea cant resist quoting Mr Stahls comments opening paragraph Overemphasis strictly flying designs con tests throughout country recent years has brought about unwarranted condition ne glect building flying Scale semiscale models Much favoritism must tributed desire maximum performance since little need said relative appearance neatly built Scale ship usual contest design SAM Italia Dr Ferdinando Gale Baveno aly recently sent interesting handbook about Eastern bloc engines written Cesare de Robertis Well illustrated unusual model power plants text Italian available Gale Via Marconi 10 28042 Baveno NO Italy interesting material de signs emerging SAM Italia including several magnificent construction drawings beautiful Italian Gliders pre-WW II era available B2 Streamlines PO Box 976 Olalla WA 98359 RC Pylon/Hager Continued page 64 no mediocre planes event fact well done dont know pilots selected would show two three brought along would still out trying decide Id vote collection absolutely beautiful takeoff area too narrow support four planes up heats threeplane blasts Plans have made things works widen takeoff area fourplane heats can accommodated next spring top 10 finishers Saturday 1 Randy Rich 11480 2 Richard Oliver 11701 3 Red Cranfield 12189 4 Phil Bussell 11742 5 Jim Young 11859 6 Bill Hager 11539 7 Hubert Wills 11905 8 Norm Johnson 11473 9 Dub Jets 11487 10 Sam Womack 11656 Just keep everyones attention two midairs Saturday both occurring just out turn number three Poor Bob Greer par ticipant little high-speed tangos Dave Layman Bill Hager Jerry Small tried trade little paint flight wound up getting planes dirty easier transport under seat Sundays action just hot heavy make sure moves down pat Bob Greer provided present what violent midair collision since vention prop happened about 20 ft di rectly behind above head stood cage turn number pilot lane made clock locked ac tion happened felt bad pilots crash itself right out movies another midair just out turn number three tame comparison Bob Greer/Hubert Wills fiasco earlier com pletely forgot get names pilots volved Yours Truly Bill Hager Jerry SmallBH Top five finishers Sunday 1 Dub Jett 11685 2 Red Cranfield l193 Phil Bussell 12059 4 Bill Hager 11614 5 Montie Montcrief 11620 6 Clay Gary 11509 7 Dave Layman 11381 8 Norm Johnson 11415 9 Randy Ritch 11529 10 Sam Wo mack 12772 Fast time meet 11090 turned Jerry Small lot really good close tight racing action both days can per sonally vouch quality food available heard nothing praise con dition fieldits size its location think two quotes heard often Yall have best racing facilities around grass field absolutely fantastic shape nice words made feel kinda proud field proud have small part core club members come out work event got meet some super-nice guys see some beautiful planes doin some really competitive racing besides Bob Greer Ill long time talking about Sun day midair yours Take guys put first-class race the field great shape See next month Caudimordax/Taib Continued page 71 wing lift being generated farther out root Very high aspect ratio wings demand extra strength conse quently added weight spars root particular application will demand aspect ratio provides best combi nation weight efficiency Cau dimordax aspect ratio 61 cho sen allowed convenient wing span 48 inches Styrofoam comes 2-ftwide sheetsjust right wing panel mean chord eight inches al lows 10-in root 6-in tip 60% tip/root percentage Such wing core too difficult cut trailing edge swept forward three inches lead ing edge swept back inch producing net sweep quarter-chord zero Experiments straight leading edge produced airplanes unpleasant snap rolling tendencies swept leading edge also allows easier placement spars greater lead-out sweep Eliminating high-speed stall Turning airplane too tightly causes wing stall wing forced produce lift capable producing produce lift angle attack must creased Beyond certain angle attack air flow along top wing separates wings surface becomes turbu lent causing sudden increase drag Most Combat fliers adjust controls limit turn radius order avoid stal ling Another approach use thicker blunter airfoil stalls higher Us thin does drawback ap proach course thicker airfoil has greater parasitic drag top speed reduced accordingly Caudimordax root section thick 15% tip thicker 25% relatively thicker tip airfoil ensures root will stall first turn thus reduc ing airplanes tendency drop wing tip tendency causes lateral instabil ity common high aspect ratio Combat wings Longitudinal stability An airplane does tight fast turns absolutely no use cant make go want go common problem Combat wings lack longitudinal stability turn once started will tighten up its own ac cord makes airplane unpointable therefore useless Combat air plane should also able fly straight unattended An unstable airplane will tend tighten wander out turn pilot glances away inslant common misconception sta 172 Model Aviation SPORTOBATIC 2 84 For1204cycleand 902-cycle rST 200025003000-0 PS 18 NEWOS BGX 13500
Edition: Model Aviation - 1990/12
Page Numbers: 62, 63, 171, 172
The Pacemaker ailerons Bob Lane Lake Jackson TX 15 years old has K&B green head 35 aftermarket throt tle Bob says reduced dihedral half still has adverse yaw doesnt add rudder turns i1 gL fU4 2 itV / wd~e 4 4 Q 0Q~ ft CALLING SAM Society Antique Model ers members intended write little no tice reminding renew SAM membershipor join havent already K F -1 I1J g - 4 ''I' o 4AND AeoP AGEA /1/ZWY a2 7O TD 9Ni 4j~441 e Ir4A X*AC K--n 4 dY7MM s97 j Aseer F~7 /J /fa zYtfT 6#I4e J 0 zlxLL II INJNIJ done after reading current issue SAM Speaks discovering nearly 300 members have yet send 1990 dues de cided accompanying photo SAM Roya Jeffery Bobs better half exhibits Standby Old-Timer Month subject second Bob Jefferys designs appear column 62 Model Aviation Radio Control Old-Timers Dr DB Mathews 909 N Maize Rd Townhouse 734 Wichita KS 67212 No sooner sent copy last months column Dr J H Wormley Midway GA sent photos Tenton Terror ------ 40Jf 224 w4 ~AA AYYD4y Avro u nas area ot elgns 21 oz covered MonoKote set Hannah Rubber plans Write 110065 E Gledon Cir Santee CA 92071 membership application would appropri Jeffery Standby second Bob Jefferys designs featured Old-Timer Month column April 1980 RC Old-Timers column highlighted Jefferys Streamlined Cyclone like present sub ject taken 1938 Frank Zaic Year book earlier column mentioned Jefferys feats Rubber Speed events well incredible output hand-carved Gas model propsover 15000 between 1935 1939 sold several hobby shops Findley OH area quarter Bob Jeffery also qualifier both Wakefield Moffett teams 1936 equally impressive accomplishment After World War II Jeffery became involved manufacture development industrial diesel engines led eventual ownership Hancock Diesel Findley 11 oz per sq ft original Standby no lightweight sturdy attract ive design trophies important build Bomber Playboy sheer joy sport thermaling out-of-the-rut Old-Timer Standby will serve well Its available plan #4E4 Old Time Plan Service Box 90310 San Jose CA 95109 Eldon Breazier Kingman KS say about Standby letter enclosed photos Tor pretty has Bomber beat hell also needed something put 1947 McCoy 60 redhead Eldon also points out several errors Pond plans says followed Zaic drawings whenever discrep ancy arose Eldon went bit wild using en gine hes owned since 1948 also balsa left over hobby shop operated 1946 1948 student Emporia State Univer sity Forty-year-old balsa Hmmm Great ideas department recent letter SAM Continued page 171 SOCIETY OF ANTIQUE MODELERS Membership Application hereby apply membership Soci ety Antique Modelers Name Address CityState .. Zip AMA No* __________ SAM No ____ SAM Chap No ____ Circle New Renewal agree follow rules Society Antique Modelers uphold princi ples stated SAM Preamble Signed *Note Full Membership SAM requires membership Academy Model Aero nautics equivalent national organization sure put SAM number membership renewal check Send $10 Bob Dodds 209 Summerside Lane Encinitas CA 92024 AFTER YOU DID ALL THE WORK WHY LET YOUR AIRPLANE DO ALL THE FLYING INFO $300 BUILD & FLY THE miniMAX YOURSELF AWARDED Grand Champion Computer Designed3 Axis Control Reserve Grand Champion UltralightPart 103 Ultralight* Easy Construction 1989 Sun-N-Fun Fly-InWood Construction TEAM INC BOX 338M BRADYVILLE TN 37026 615 765-5397 r HAS MOVED INTO LARGER QUARTERS 21658 Cloud Way Hayward CA 94545 CAL 415 783-4868 Out CAL 800 482-8663 13OO RIC BUMP NEW 12&13 FT LONG OUTSTANDING CONTROd MORE POWER KIT $35000 NEW GENESIS N/C FLYING WING GLIDER 59 INCH WINGSPAN HAND LAUNCH CLIFF SOAR NI-START KIT $3495~2 2-3 CN 1~ere proud announce TATONE PRODUCTS CORPORATION has acquired CB ASSOCIATES PRESIDENT TATONE PRODUCTS CORP 4 FUN TO FL RUBBER POWER KITSSUPPLIES PEANUT SCALE ANDREASONPIPER CUB MUSTANG ZERO PIETENPOL LACY GIPSY MOTHCOUGER RUBBER SPORT FLYING ACE MOTH 8995 BOSTONIAN PUP $595 PRAIRIE BIRD lB $B95 ROG 1ST MODEL $295 NOSE BEARINGS BRASS WASHERS PROPS 4TO 9 RUBBER TAN DUMMY CYL CLEAR VINTAGE WHEELS 300 PLANS TISSUEMANY MORE KITS C02 ENGINES HUNGERFORD SILK & STEEL SPOKED WHEELS COMPLETE CATALOG $200 6 BOX 710399-MASANTEE CA 92072 PeckPeIj#mes TEL 619 448-1818FAX 619 448-1833 mber 1990 63 LIGHTING SYSTEMS THE ORIGINALS. Still Best #RED 01Programmable Flashing Navigation Lights$2495 #RED 02Adjustable Rate Strobe Light$1995 #RED 03Landing Lights$3995 * RED 04Adjustable Rate Mars Rotating Beacon$1995 #RED 05Marine Navigation Lights nonflashing$1095 #RED 14Big Airplane Navigation Lights$2495 #RED 16ECono Landing Lights brightest$1995 #RED 23Real Strobe Light true zenon strobe$2995 0 SEE YOUR DEALER 6 SEND STAMPED ENVELOPE FOR RAM INFO If unavailable locally send chec money order full credit card info cost item plus $200 $500 foreign immediate shipment Include full address UPS Sorry no COD Ram 4736 N Milwaukee Ave ago IL 60630 RC Scale/Foley Continued page 167 Championships must-see Scale events country As writing loca tions Nats Scalemasters have announced However Top Gun scheduled May 2-5 1991 Palm Beach Polo Club West Palm Beach FL site will best yet first-class accommodations permanent bleachers spectators super-nice field also possibility cosponsorship major airline addresses companies men tioned article Model Engineering 401 South Front Street Raleigh NC 27658 Sig Man ufacturing Co Inc PO Box 58306 Monte zuma IA 50171 RC Aerobatics/Van Putte Continued page 61 Bob did fine job once product will come Out grabs attention fliers across coun try Fliers will buy droves year after its introduced cant imagine get along Tm-Turn spinners good ex ample Romco Manufacturings Bob Obenberger brought some Tm-Turn samples Nats Lake Charles early 1980s within year spinners become standard RC Pattern now have another product breakthrough hands check Nats RC Pattern ma trix youll see top competitors years contest used APC propellers Pattern fliers fussy fickle buy what works well desert good product heartbeat bet ter comes out Last year few competitors used funnylooking APC props fliers made jokes expense curious thing happened Pattern fliers noted several top competitors using newer props Bill Cunningham Chris Lakin good examples took good hard look Thats large numbers APC props began sold de spite reports prop failures early prob lems prop failures solved havent heard such mishaps lately redesigning prop shape B-10 present C-2 version APC has improved al ready great prop propellers quiet produce remarkable thrust aircraft flight conditions P81AACn$50 8008408488001800400 SF30031S 401255 SF400418 001255 SF5001653200-001570 RESOS0523200-I1075 SF750TVC5232 ScaB 1075 3105 5p~o 4~I3216 uscoIe down side sharpness trail ing edge near prop hub usually use starter periodic hand cranking occasionally gives cut finger unless take piece 280400-grit emery cloth trailing edge near hub Thats small price pay superior prop really big bonuses using APC props beyond performance price availability Theyre like lot Pattern spe cialty items have special ordered single source outrageous prices Virtually good hobby shops have havent tried APC props should RC Old-Timers/Mathews Continued page 63 president Jim Adams mentions library ing set up Gene Wallock provide members reprints articles etc pre-WV II model publications Additionally longawaited list SAM officially approved model de signs both Gas Scale will available members makes two new reasons join society way Jim happens have drawings available two early deBolt RCsthe 1954 Over Under mdder-only design sym metrical section airfoil kit version deBolt called Sonic Cruiser Over Under intended 19 power Sonic Cruis er 29 engines drawings both show elevators brave heart priced reasonable $5 drawings avail able Jim Adams 2538 Spurgeon St Santa Ana CA 92706 Tools trade Im fortunate having long-standing source worn-out Iris scissors Kelly hemostats #25 Bard Parker handles Own lucky recommend Hobby Craft Instruments 9279 Cody Overland Park KS 66214 tel 1-913/492-1898 source new reasonably priced surgical struments havent used good knife till youve used #25 blade No 4 handle RC Scale Duration Bob Lonseth has discovered some additions list eligible designs Unlimited Scale Duration originally published Aeroneers newsletter recently printed column follows 44-in-span Eurocoupe published March 1943 Model Airplane News 48-in-span Monocoupe 90 October 1942 Air Trails 42-inspan Curtiss 0-52 published Model Airplane News September 1942 Aeronews editor Jim Alaback reproduced - Cesare de Robenis Cesare de Robertis Secretary SAM Italia offers pictorial guide engines East bloc Filled interesting Informa tion See text order Hobby Craft Instruments good bet reasonably priced surgical-grade tools trade Earl Stahl article recent issue 1944 Air Trails Annual excellent material anyone interested RC Scale Duration other reason new SAM library such December 1990 171 fleM Texas RC Slow Only $4495 Winner Combat Technology Now Radio Control 4 34 Channels 4 25-30 Engines 4 Adaptable 10. 15 40-45s 4 Rugged & Easy build 448 span 460 sq Dealer Inquiries Welcome Send $100 Catalog Combat Goodies OREHOU 760 Waltonvifle Rd Humnielatown PA 17036 717 566-3810 DUAL STRUT NICKEL PLATED NOSE GEAR 70 5,. /5 Ii AOL Fulls Tooling PO Box 95 Chanpaign IL 61824 urn ou p n n o artoI plotter FOILED AGAIN! PLOT AIRFOiLS IN ANY CHORD UP TO 24 INCHES MODIFY THiCKNEss CAMBER & TRAILING EDGE PLOT SKIN THiCKNESS FORsHEErED WINGS ENTER DATA EASILY VIA INTELUGENT EDITOR USER-FRIENDLY MENU-DRIVEN OPERATION INCLUDES il-PAGE ILLUSTRATED U5ER MANUAL $4500 CA 8. 0808 p185880058IZZv- nags. IBMPCIXCIAV compaUbI flflfll 8800 88fl JO US$58A conphJa enS 00 matOx 50500 SI comes, 53001 5058 0000 008092558000 525o Sr OAkS Sesa 058001 money 00W02 CYGNET Software714 496-6961 24843 Del Prado #141B Dana Point CA 92629 IMOTORID4LE4 Una breve guida alla produz o4scromotur parsi dei Pallo d a 2 22 2222 1 422 1 PRICE LIST SURGICAL GRADE INSTRUMENTS FOR MODELING AIRPLANES S RDABLE SOURCE GE SURGICAL GRADE INSTRUMENTS FOR TOE SI GD EL AND CRAFT HOBBYIST lobby ClaP 1051050101151 074 EssAy GscLnd Thssk ES 16214 II 492-5085 1 21 modela fill need hotdog show-off sport plane Knife edge take-offs flat apins snaps anything can Wing foam Fuselage Tail lite ply balsa Builds quick lands like trainer Flyingweight lOlba 184 1 l3lbs 192 Ohio OHIO SUPERSTAR PRODUCTS INC 11376 RIOGEWAY ROADKENSINGTON OHIO 44427 r 216-223-1950 great idea cant resist quoting Mr Stahls comments opening paragraph Overemphasis strictly flying designs con tests throughout country recent years has brought about unwarranted condition ne glect building flying Scale semiscale models Much favoritism must tributed desire maximum performance since little need said relative appearance neatly built Scale ship usual contest design SAM Italia Dr Ferdinando Gale Baveno aly recently sent interesting handbook about Eastern bloc engines written Cesare de Robertis Well illustrated unusual model power plants text Italian available Gale Via Marconi 10 28042 Baveno NO Italy interesting material de signs emerging SAM Italia including several magnificent construction drawings beautiful Italian Gliders pre-WW II era available B2 Streamlines PO Box 976 Olalla WA 98359 RC Pylon/Hager Continued page 64 no mediocre planes event fact well done dont know pilots selected would show two three brought along would still out trying decide Id vote collection absolutely beautiful takeoff area too narrow support four planes up heats threeplane blasts Plans have made things works widen takeoff area fourplane heats can accommodated next spring top 10 finishers Saturday 1 Randy Rich 11480 2 Richard Oliver 11701 3 Red Cranfield 12189 4 Phil Bussell 11742 5 Jim Young 11859 6 Bill Hager 11539 7 Hubert Wills 11905 8 Norm Johnson 11473 9 Dub Jets 11487 10 Sam Womack 11656 Just keep everyones attention two midairs Saturday both occurring just out turn number three Poor Bob Greer par ticipant little high-speed tangos Dave Layman Bill Hager Jerry Small tried trade little paint flight wound up getting planes dirty easier transport under seat Sundays action just hot heavy make sure moves down pat Bob Greer provided present what violent midair collision since vention prop happened about 20 ft di rectly behind above head stood cage turn number pilot lane made clock locked ac tion happened felt bad pilots crash itself right out movies another midair just out turn number three tame comparison Bob Greer/Hubert Wills fiasco earlier com pletely forgot get names pilots volved Yours Truly Bill Hager Jerry SmallBH Top five finishers Sunday 1 Dub Jett 11685 2 Red Cranfield l193 Phil Bussell 12059 4 Bill Hager 11614 5 Montie Montcrief 11620 6 Clay Gary 11509 7 Dave Layman 11381 8 Norm Johnson 11415 9 Randy Ritch 11529 10 Sam Wo mack 12772 Fast time meet 11090 turned Jerry Small lot really good close tight racing action both days can per sonally vouch quality food available heard nothing praise con dition fieldits size its location think two quotes heard often Yall have best racing facilities around grass field absolutely fantastic shape nice words made feel kinda proud field proud have small part core club members come out work event got meet some super-nice guys see some beautiful planes doin some really competitive racing besides Bob Greer Ill long time talking about Sun day midair yours Take guys put first-class race the field great shape See next month Caudimordax/Taib Continued page 71 wing lift being generated farther out root Very high aspect ratio wings demand extra strength conse quently added weight spars root particular application will demand aspect ratio provides best combi nation weight efficiency Cau dimordax aspect ratio 61 cho sen allowed convenient wing span 48 inches Styrofoam comes 2-ftwide sheetsjust right wing panel mean chord eight inches al lows 10-in root 6-in tip 60% tip/root percentage Such wing core too difficult cut trailing edge swept forward three inches lead ing edge swept back inch producing net sweep quarter-chord zero Experiments straight leading edge produced airplanes unpleasant snap rolling tendencies swept leading edge also allows easier placement spars greater lead-out sweep Eliminating high-speed stall Turning airplane too tightly causes wing stall wing forced produce lift capable producing produce lift angle attack must creased Beyond certain angle attack air flow along top wing separates wings surface becomes turbu lent causing sudden increase drag Most Combat fliers adjust controls limit turn radius order avoid stal ling Another approach use thicker blunter airfoil stalls higher Us thin does drawback ap proach course thicker airfoil has greater parasitic drag top speed reduced accordingly Caudimordax root section thick 15% tip thicker 25% relatively thicker tip airfoil ensures root will stall first turn thus reduc ing airplanes tendency drop wing tip tendency causes lateral instabil ity common high aspect ratio Combat wings Longitudinal stability An airplane does tight fast turns absolutely no use cant make go want go common problem Combat wings lack longitudinal stability turn once started will tighten up its own ac cord makes airplane unpointable therefore useless Combat air plane should also able fly straight unattended An unstable airplane will tend tighten wander out turn pilot glances away inslant common misconception sta 172 Model Aviation SPORTOBATIC 2 84 For1204cycleand 902-cycle rST 200025003000-0 PS 18 NEWOS BGX 13500