Free Flight DURA TION Bob Meuser REAL OLD-TIMER back got cur ious about first model Id built probably about 1930 1 could clearly remember perspec tive illustration magazine got plans visions model dim remember somewhat ascared fly fool thing somehow dad got hold local expert help out First added downthrust Id never heard such thing neat little pigtail music wire right place judged whoever would lust right Still dont think got about six ft off ground Well hit Jim Noonan former hcadperson down Oldtimer Models before peddled off Mike Mulligan rough sketch fuselage construction notion appeared Popular Mechanics Popular Sci ence somewhere around 1930 turned out knew model well drawn up tA14l tAbAZlVs 4i-minute comnct4& fron PQPVtAR MECHANICS DCC 1929 luseLage Vtctn visw SccaLe tncke Lj1mflJThF1mLJTh-YL-m Pow6r 8 traitds--liLack ruber orecuvv Coerin ricexzper t IC iG ci~l~o iiiffi - - Ftetie secLiin 40 - ztrcL_______ OpencLe view odel Aviation atrium Northwood institute West Baden IN Cezar Banks ponders whether pole-steer model Its possible may see photos models flying since facility sale Bob has comments column Bob Clemens photo Joe Vittitow Lawrenceburg KY makes easy launch Mulvihill Rubber model Bluegrass FF Champs Lexington KY Ship has simple V-dihedral 200/ stab First-place winner Photo Bill Barr full-size plans OT Models So off blank check Mulligan plans plus some new black tissue bit whatever Faykun Loren Williams others covering Mulvihill models nowadays dont go too much over 10 bucks OK return mail got plans etc sure enough seemed like right model see draw ing tiny sure least 4-ft long mere 29 inches crazy thick cut-out ribs . inverted stab huge rudder bamboo fuselage formers rybody nowadays knows bamboo proper stuff wingtips fuselage formers thick ribs did get hooked ffel 400 RAF 32 Clark Y others Brothers Wright proved tests tiny wind tunnel thin airfoils way go Tony Fokker pure hunch near can figure said Thats bunch crap besides thick wings can put structure inside doesnt create bunch drag thats way its ever since Wright brothers did some really classy engineer ing wind tunnel least monument fine woodworking practices nothing else its lot elsebut missed Reynoldsnumber effect did others time despite fact old Osborn Reynolds made scale effect crystal-clear decades ear lier Instead reading between lines realiz ing indeed thin airfoils better low Reynolds numberswhere model airplanes live slavishly copied thick airfoils used fullsize aircraft took lot turn things around W F Schmitzs book Forties its var ious interpretations did lot simply-con structed effective Ritz foils must have influence too Anyhow mid-Fifties became clear thin foils great mod els thin wings difficult make strong enough survive rigors competition fly ing strength vs aerodynamic excel lencehas name game ever since Atrium blues atrium Northwood Insti tute West Baden IN has site Indoor World Championships US National Indoor Championships two International Pea nut Grand Prix meets numerous annual National Indoor Record Trials Back back some Indoor extravaganzas have lasted better part two weeks loss atrium such events would devastating blow Free Flight About month ago going tell atrium jeopardy being felled forever swinging ball demolition crew unless lots others conjured up enough coin realm save Credits Gordon Wisniewski Tony Itali ano efforts regard Thats good part rather good part now seems future atrium especially possibility us getting access future extremely flimsy As now stands Northwood Institute planning peddle off whole worksincluding atrium So use depends what its unknown future owners choose Oh well nothing forever except perhaps Old-Timer modeling Tissue weights time time Ive collected data weights various kinds covering materials both own use possible publication order guide others always seems come nothing because time get round tuit half stuff have collected data no longer available dozen other materials have htt market suddenly occurs burden supplying information should supplier rather little old consumer supplier has to weigh dozen sheets oncea sufficient number sheets ensure good reading gram scale measure length width ruler punch few numbers eight-buck pocket calculator no terrific chore suppliers out reluctant gather publish such information products let ask Would trust supplier claimed have ultra-light con denser paper superfine tissue wouldnt publish weight-per-unit-area same because Doesnt own gram scale owns cant get hang using b Cant wont measure figure area sheet tissue c Wont divide number another d reluctant determine publish reason whatsoever such primitive informa tion products nevertheless makes great claims products certainly true weight-per-unit-area paper- cloth-like material fac tor sea factors determine applicability particular covering material particular covering job except plastic film plastic sheet condenser-paper-type materials weight after doping counts relation its porosity puncture-resistance function amount dope applied subtle factors enter too such wet strength big covering wet tissue shrinkage principal direc tion temperature humidity effects forth weight-per-unit-area raw material tells us small part what wed really like know tells us somethingand beats nuthin day Id say least product-peddler should willing poten tial customers Most Free Flighters measure weights gram scale areas square inches Continued page 158 February 1983 59 Another Pacific Acethis Sherman Gillespie built Irom CPM Products kit 722 Lennox Yreka CA 96097 cutie Thirties nepair jime Si iflC uiuegrass I-i- tflamps Wind cartwheeled Joe ws Uni Rubber model after landed causing some damage L R Joe Roger Van Arsdall OC Stewart teamed up repair damage get ship back blue Bill Barr photo ENDURANCE RUBBER MODELS THE EASY BTHE TIME MACHINE PENNY 18 Spa 1/8 OZ E ,. $495 3 PARLOR PLANES 10 Span soBs FLAPPING FLYER 24 Span I/S OZ 2PARLORTHE SLOWPOKE Span IS cOPTERS 12 Soan 5495 95i2P2flflYg5 PIaSIC Pop ** STARSHIP 2 Yard Birds 12a Full Size Plans Full Size Prop Jig pl5tc ure Illustrated Ultra Light Balsa IlA1 i Bearing Micro Wa5hS *a Pirelli Rubber W 1120 oz L-135 * *** S105 STARSHIP 8100 Williams Book $20 Order INDOOR MODEL AIRPLANES Ron WIllIams 264 pgp Over 200 IIIustraIlOflP plus 2 FREE Full SIze Plan Sheen IMS Easy B 51295 INDOOR MODEL AIRPLANES Lew GItlow 46 Pga & Over 100 IlusIratlorIs reprInt .. $395 PEA N UT POWER Hannan 80 INDOOR BALSA $695 PHUT BALSA PACK $695 JAPANESE TISSUE 6 Colors 12 Pack $350Roll ol 10 large $595 ROLL OF MICROLITE COVERING $325 CONDENSER PAPER $250WASHERS $150 RUBBER LUBE $150CEMENT $150 THRUST BEARING New TIny 50 New Dual 100 NEW MARK 1 WINDERS16l $1195 NEW SMOOTHIE WINDERS61_______$395 61 WInder $195 wlIh $25 Order ALL ORDERS & KITS ADD 10% POSTAGE Minimum postage $150 16 PG CATALOG $100 DOX Ca OARBERVILLE CA 95440 assumes engine well broken new engine will complicate fuel system problems reason Id suggest use bladder breaking engines least until youve mastered use Char/it hhoson 37/6 Ingrahani St. San go CA 92119 FF Duration/Meuser Continued page 59 models weigh few tens grams have hundred square inches wing area give take factor five ten either way So suggest appropriate unit expressing covering weights grams per 100 square inches despite mixed English metric units big purity metric system am tell can buy pres sure gauge reads pascals explain metric countries express force grams rather newtons would accordance international standards laid tripin slightly less caustic form Mike Mulligan headperson down Oldsimer Models sort agreedbut well have wait about year until makes up new catalog printing costs know So itll take awhile get ball rolling think ball needs rolling Tom Hutchinson Memorial Trophy Youve prob ably already heard Tom died wrote obituary another publication time wasnt up writing second column Immediately upon Toms death talk newsletters about perpetual trophy name brought mind images some garish oversize affair plastic angels over possibly some home-brew concoc tion designed insurance salesman mechanical engineer dust has settled well will trophy will designed built professional Tom competed events favorite Nordic A/2 Towline Glider fitting trophy will awarded top 2 score US FF Championships year Donations toward purchase trophy should sent Steve Geraghty 194 Vista Del Monte Los Gatos CA 95030 Book reviews have couple month BCs Model Airplane Building Megows catalog 1940 Darned Good Airfoils Model Builder magazine January 1974 through September l982 have couple book presielrs too airfoils book compiled Bob Stalick includes drawings coordinates all-impor tant nose radii known 45 airfoils pub lished column earlier written Bob subsequently late Tom Hutchinson cluded both table contents alpha numeric index term alphanumeric index always puzzles cant imagine being other kind index Also included re prints Eppler Effect Tom Hutchinson Read Darned-Good-Airfoil Charts Host Became Instant Airfoil Expert Painless Lesson would have nice have comments about airfoils published along would have doubled sizeand costof book least price $2 plus $50 postage handling its biggest boggin town Order Stalick 5066 NW Picadilly Circle Albany OR 97321 20-page Megow reprint enlarged some what easier reading chock full construc tion how-to-do-its including such things make wire bender balsa stripper plans simple HL Glider baby ROG stick model IS-in span fuselage model finally rubber-power Monocoupe plus lots goodies about bending bamboo balsa about making propshafts S-hooks shockabsorbing landing gears Theres section solid display models finally glossary model aviation terms sells $395 available John J Frost P0 Box 317 Covington LA 70434 remains good guide beginner Frost now pushing sixty has aviation since childhood flying TBFs anti-submarine servtce later flying everything DC-3s jets commercial passenger service has sev eral reprints works including Boys Model Airplane Book 1911 com plete Megow catalog Model Aeroplanes Engines 1917 Aircraft Armament 1917 plus lots tech manuals such early aircraft engines plus complete set origi nal factory drawings Curtiss JN4-D Jenny An ambitious project Digital dethermalizer timer item singlefunction timer Towline Gliders rubberpower models Thomas Koster Denmark man ufactures sells unit based much expensive complex FAI Power model timer mentioned column last month still fairly expensive $55 using saves just flyaway short-DT per haps well worth price Accuracy claimed better / 100 sec Time can set 6sec 9 mm 54sec steps 6 sec Setting accomplished turn ing two rotary switches minutes other seconds DT release familiar 158 Model Aviation • ENUUfl MODELI1rrhY.E GET ORGANIZED s set 4 Sturdy lies thai holdS over 4 years 01 lavorrie e zines 4 MAG FILES $495 Send $495 pies 51 00 lo postage handlatg 0GM INOUSTUES P0 BOX 388-K DOVER NH 03820 mousetrap arrangement no rotating disk suffer malfunction mounting plate 26 x 07 depth 055 weight 175 grams plus another 17 grams rechargeable bat tery lasts 800 1000 actuations between charges charger selling $20 $25 will soon available AC available charging can done 9V transistor radio battery timing cycle actuated switch con nected timer 6-in electric wire Press ing switch resets timer zero releasing starts timing action allows switch placed ahead swinging-type towhook isa forward pull towhook timer resets zero towline releasedor tow/me breaks ssithout releasing timing function actuated Now hasnt someone already done mechan ical timer Order unit Koster Digital Timers P0 Box 54 DK-3400 Hillerod Denmark First Intergalactic Ornithopter Postal Flappers get acts together December 1983 postal make flights contest records trial sanctioned FAT its affiliates such AMA mail scores rules unfortunately ornithopters flown AMA competition might cause some problems well cope rules follows Event definition An ornithopter freelyflying model aircraft derives its lift propulsion primarily flapping its wings event director made clear no flap ping-prop models would permitted total supporting surface must exceed 1000 sq dm Thats 15500 sq kid No prob lem eh supporting surface includes sur faces used obtain lift pitch control Areas measured traces around surfaces sum areas fixed supporting surfaces must exceed one-half area flapping sur faces model must powered strands extensible rubber no restriction weight model weight rubber used sneaker would rule out some models meet AMA rules some models would meet AMA rules could enter Too bad think set rules about enough information nitty-gritty con tact David W Erbach 1738 St Marys Road #702 Winnipeg Manitoba R2N 1G8 Canada Bob Meuser 4200 Gregory Si. Oakland CA 95619 Airacuda/Haught Continued page 72 things need said about safety Never try fly twins Dacron lines Always use steel lines suggest 007 steel lines 35 feet long will give performance boost will safer long run fray tangle easily Dacron Twins fun fly needs keep eye other engine during starting tuning Prop bites nasty avoided pusher configuration adds further complication person starting engines positions himself behind model helper holds front works best helper holds model starting battery Fill both fuel tanks first start inboard engine Move battery outboard engine start carefully top off both fuel tanks take off must caution both starter assistant reach over propeller arcs Fine-tune engines until sync unmistakable harmony two engines running time sounds neat also reduces damage vibration other thing need check before launching both engines running same direction Cox 049s work well pusher configurations because will run backwards alteration 24Gal126Gal Per GalPer Gal 575535 695585 825779 900867 925900 16001447 23002100 31002900 NEW Economy Fuel Castor Oil Lubricant 110078070066017000 28000 Free delivery 14525126 gal deals uSA 30 & 54 gal drums freight collect FOB Clover SC Gallon price determined nitro content & total quantity ordered SC orders add 4 % sales tax use charge card order CODs limited ups shipment Deduct 3% prepaymant Money Order Certified Check NEWPower Booster Oil scale engines. $lOlqt *30/galFioaeaeajecsso NEWPaws Rnnstsfssr scala engine $l2Iqt *38/gal freight included Uss3ozjgaldgss4ttutnodca 555 n3--I 222-7488 222-7285 February 1983 159 Designed Minimaster Easy build.easy fly.racy. rugged. fuil fight Wingspan 49% ne 15-25 Area 416 sq nE Weight 3% lbs ANDRE AIRCRAFT MODEL COMPANY ot ear V I-OnrIldur 2 Available local hobby shop AeromasterA-Ray TrainermasterH-Ray MinimasterBig H-Ray SportmasterX-Ray ttFWSLUI U usslur arso syiiniesic Yourchoice ofcastol .. 4 Gal Case %Oneor5GalCan30 Gel Drum54 Gal Drum NitroGal Per Gal EA 0%10506601030014000 5%11507801520023500 10%14009102050033000 12%15009702270036800 15%160010102580042500 25%230017503630061400 40%300025005200089700 60%3800330070500123000 10%
Edition: Model Aviation - 1983/02
Page Numbers: 58, 59, 158, 159
Free Flight DURA TION Bob Meuser REAL OLD-TIMER back got cur ious about first model Id built probably about 1930 1 could clearly remember perspec tive illustration magazine got plans visions model dim remember somewhat ascared fly fool thing somehow dad got hold local expert help out First added downthrust Id never heard such thing neat little pigtail music wire right place judged whoever would lust right Still dont think got about six ft off ground Well hit Jim Noonan former hcadperson down Oldtimer Models before peddled off Mike Mulligan rough sketch fuselage construction notion appeared Popular Mechanics Popular Sci ence somewhere around 1930 turned out knew model well drawn up tA14l tAbAZlVs 4i-minute comnct4& fron PQPVtAR MECHANICS DCC 1929 luseLage Vtctn visw SccaLe tncke Lj1mflJThF1mLJTh-YL-m Pow6r 8 traitds--liLack ruber orecuvv Coerin ricexzper t IC iG ci~l~o iiiffi - - Ftetie secLiin 40 - ztrcL_______ OpencLe view odel Aviation atrium Northwood institute West Baden IN Cezar Banks ponders whether pole-steer model Its possible may see photos models flying since facility sale Bob has comments column Bob Clemens photo Joe Vittitow Lawrenceburg KY makes easy launch Mulvihill Rubber model Bluegrass FF Champs Lexington KY Ship has simple V-dihedral 200/ stab First-place winner Photo Bill Barr full-size plans OT Models So off blank check Mulligan plans plus some new black tissue bit whatever Faykun Loren Williams others covering Mulvihill models nowadays dont go too much over 10 bucks OK return mail got plans etc sure enough seemed like right model see draw ing tiny sure least 4-ft long mere 29 inches crazy thick cut-out ribs . inverted stab huge rudder bamboo fuselage formers rybody nowadays knows bamboo proper stuff wingtips fuselage formers thick ribs did get hooked ffel 400 RAF 32 Clark Y others Brothers Wright proved tests tiny wind tunnel thin airfoils way go Tony Fokker pure hunch near can figure said Thats bunch crap besides thick wings can put structure inside doesnt create bunch drag thats way its ever since Wright brothers did some really classy engineer ing wind tunnel least monument fine woodworking practices nothing else its lot elsebut missed Reynoldsnumber effect did others time despite fact old Osborn Reynolds made scale effect crystal-clear decades ear lier Instead reading between lines realiz ing indeed thin airfoils better low Reynolds numberswhere model airplanes live slavishly copied thick airfoils used fullsize aircraft took lot turn things around W F Schmitzs book Forties its var ious interpretations did lot simply-con structed effective Ritz foils must have influence too Anyhow mid-Fifties became clear thin foils great mod els thin wings difficult make strong enough survive rigors competition fly ing strength vs aerodynamic excel lencehas name game ever since Atrium blues atrium Northwood Insti tute West Baden IN has site Indoor World Championships US National Indoor Championships two International Pea nut Grand Prix meets numerous annual National Indoor Record Trials Back back some Indoor extravaganzas have lasted better part two weeks loss atrium such events would devastating blow Free Flight About month ago going tell atrium jeopardy being felled forever swinging ball demolition crew unless lots others conjured up enough coin realm save Credits Gordon Wisniewski Tony Itali ano efforts regard Thats good part rather good part now seems future atrium especially possibility us getting access future extremely flimsy As now stands Northwood Institute planning peddle off whole worksincluding atrium So use depends what its unknown future owners choose Oh well nothing forever except perhaps Old-Timer modeling Tissue weights time time Ive collected data weights various kinds covering materials both own use possible publication order guide others always seems come nothing because time get round tuit half stuff have collected data no longer available dozen other materials have htt market suddenly occurs burden supplying information should supplier rather little old consumer supplier has to weigh dozen sheets oncea sufficient number sheets ensure good reading gram scale measure length width ruler punch few numbers eight-buck pocket calculator no terrific chore suppliers out reluctant gather publish such information products let ask Would trust supplier claimed have ultra-light con denser paper superfine tissue wouldnt publish weight-per-unit-area same because Doesnt own gram scale owns cant get hang using b Cant wont measure figure area sheet tissue c Wont divide number another d reluctant determine publish reason whatsoever such primitive informa tion products nevertheless makes great claims products certainly true weight-per-unit-area paper- cloth-like material fac tor sea factors determine applicability particular covering material particular covering job except plastic film plastic sheet condenser-paper-type materials weight after doping counts relation its porosity puncture-resistance function amount dope applied subtle factors enter too such wet strength big covering wet tissue shrinkage principal direc tion temperature humidity effects forth weight-per-unit-area raw material tells us small part what wed really like know tells us somethingand beats nuthin day Id say least product-peddler should willing poten tial customers Most Free Flighters measure weights gram scale areas square inches Continued page 158 February 1983 59 Another Pacific Acethis Sherman Gillespie built Irom CPM Products kit 722 Lennox Yreka CA 96097 cutie Thirties nepair jime Si iflC uiuegrass I-i- tflamps Wind cartwheeled Joe ws Uni Rubber model after landed causing some damage L R Joe Roger Van Arsdall OC Stewart teamed up repair damage get ship back blue Bill Barr photo ENDURANCE RUBBER MODELS THE EASY BTHE TIME MACHINE PENNY 18 Spa 1/8 OZ E ,. $495 3 PARLOR PLANES 10 Span soBs FLAPPING FLYER 24 Span I/S OZ 2PARLORTHE SLOWPOKE Span IS cOPTERS 12 Soan 5495 95i2P2flflYg5 PIaSIC Pop ** STARSHIP 2 Yard Birds 12a Full Size Plans Full Size Prop Jig pl5tc ure Illustrated Ultra Light Balsa IlA1 i Bearing Micro Wa5hS *a Pirelli Rubber W 1120 oz L-135 * *** S105 STARSHIP 8100 Williams Book $20 Order INDOOR MODEL AIRPLANES Ron WIllIams 264 pgp Over 200 IIIustraIlOflP plus 2 FREE Full SIze Plan Sheen IMS Easy B 51295 INDOOR MODEL AIRPLANES Lew GItlow 46 Pga & Over 100 IlusIratlorIs reprInt .. $395 PEA N UT POWER Hannan 80 INDOOR BALSA $695 PHUT BALSA PACK $695 JAPANESE TISSUE 6 Colors 12 Pack $350Roll ol 10 large $595 ROLL OF MICROLITE COVERING $325 CONDENSER PAPER $250WASHERS $150 RUBBER LUBE $150CEMENT $150 THRUST BEARING New TIny 50 New Dual 100 NEW MARK 1 WINDERS16l $1195 NEW SMOOTHIE WINDERS61_______$395 61 WInder $195 wlIh $25 Order ALL ORDERS & KITS ADD 10% POSTAGE Minimum postage $150 16 PG CATALOG $100 DOX Ca OARBERVILLE CA 95440 assumes engine well broken new engine will complicate fuel system problems reason Id suggest use bladder breaking engines least until youve mastered use Char/it hhoson 37/6 Ingrahani St. San go CA 92119 FF Duration/Meuser Continued page 59 models weigh few tens grams have hundred square inches wing area give take factor five ten either way So suggest appropriate unit expressing covering weights grams per 100 square inches despite mixed English metric units big purity metric system am tell can buy pres sure gauge reads pascals explain metric countries express force grams rather newtons would accordance international standards laid tripin slightly less caustic form Mike Mulligan headperson down Oldsimer Models sort agreedbut well have wait about year until makes up new catalog printing costs know So itll take awhile get ball rolling think ball needs rolling Tom Hutchinson Memorial Trophy Youve prob ably already heard Tom died wrote obituary another publication time wasnt up writing second column Immediately upon Toms death talk newsletters about perpetual trophy name brought mind images some garish oversize affair plastic angels over possibly some home-brew concoc tion designed insurance salesman mechanical engineer dust has settled well will trophy will designed built professional Tom competed events favorite Nordic A/2 Towline Glider fitting trophy will awarded top 2 score US FF Championships year Donations toward purchase trophy should sent Steve Geraghty 194 Vista Del Monte Los Gatos CA 95030 Book reviews have couple month BCs Model Airplane Building Megows catalog 1940 Darned Good Airfoils Model Builder magazine January 1974 through September l982 have couple book presielrs too airfoils book compiled Bob Stalick includes drawings coordinates all-impor tant nose radii known 45 airfoils pub lished column earlier written Bob subsequently late Tom Hutchinson cluded both table contents alpha numeric index term alphanumeric index always puzzles cant imagine being other kind index Also included re prints Eppler Effect Tom Hutchinson Read Darned-Good-Airfoil Charts Host Became Instant Airfoil Expert Painless Lesson would have nice have comments about airfoils published along would have doubled sizeand costof book least price $2 plus $50 postage handling its biggest boggin town Order Stalick 5066 NW Picadilly Circle Albany OR 97321 20-page Megow reprint enlarged some what easier reading chock full construc tion how-to-do-its including such things make wire bender balsa stripper plans simple HL Glider baby ROG stick model IS-in span fuselage model finally rubber-power Monocoupe plus lots goodies about bending bamboo balsa about making propshafts S-hooks shockabsorbing landing gears Theres section solid display models finally glossary model aviation terms sells $395 available John J Frost P0 Box 317 Covington LA 70434 remains good guide beginner Frost now pushing sixty has aviation since childhood flying TBFs anti-submarine servtce later flying everything DC-3s jets commercial passenger service has sev eral reprints works including Boys Model Airplane Book 1911 com plete Megow catalog Model Aeroplanes Engines 1917 Aircraft Armament 1917 plus lots tech manuals such early aircraft engines plus complete set origi nal factory drawings Curtiss JN4-D Jenny An ambitious project Digital dethermalizer timer item singlefunction timer Towline Gliders rubberpower models Thomas Koster Denmark man ufactures sells unit based much expensive complex FAI Power model timer mentioned column last month still fairly expensive $55 using saves just flyaway short-DT per haps well worth price Accuracy claimed better / 100 sec Time can set 6sec 9 mm 54sec steps 6 sec Setting accomplished turn ing two rotary switches minutes other seconds DT release familiar 158 Model Aviation • ENUUfl MODELI1rrhY.E GET ORGANIZED s set 4 Sturdy lies thai holdS over 4 years 01 lavorrie e zines 4 MAG FILES $495 Send $495 pies 51 00 lo postage handlatg 0GM INOUSTUES P0 BOX 388-K DOVER NH 03820 mousetrap arrangement no rotating disk suffer malfunction mounting plate 26 x 07 depth 055 weight 175 grams plus another 17 grams rechargeable bat tery lasts 800 1000 actuations between charges charger selling $20 $25 will soon available AC available charging can done 9V transistor radio battery timing cycle actuated switch con nected timer 6-in electric wire Press ing switch resets timer zero releasing starts timing action allows switch placed ahead swinging-type towhook isa forward pull towhook timer resets zero towline releasedor tow/me breaks ssithout releasing timing function actuated Now hasnt someone already done mechan ical timer Order unit Koster Digital Timers P0 Box 54 DK-3400 Hillerod Denmark First Intergalactic Ornithopter Postal Flappers get acts together December 1983 postal make flights contest records trial sanctioned FAT its affiliates such AMA mail scores rules unfortunately ornithopters flown AMA competition might cause some problems well cope rules follows Event definition An ornithopter freelyflying model aircraft derives its lift propulsion primarily flapping its wings event director made clear no flap ping-prop models would permitted total supporting surface must exceed 1000 sq dm Thats 15500 sq kid No prob lem eh supporting surface includes sur faces used obtain lift pitch control Areas measured traces around surfaces sum areas fixed supporting surfaces must exceed one-half area flapping sur faces model must powered strands extensible rubber no restriction weight model weight rubber used sneaker would rule out some models meet AMA rules some models would meet AMA rules could enter Too bad think set rules about enough information nitty-gritty con tact David W Erbach 1738 St Marys Road #702 Winnipeg Manitoba R2N 1G8 Canada Bob Meuser 4200 Gregory Si. Oakland CA 95619 Airacuda/Haught Continued page 72 things need said about safety Never try fly twins Dacron lines Always use steel lines suggest 007 steel lines 35 feet long will give performance boost will safer long run fray tangle easily Dacron Twins fun fly needs keep eye other engine during starting tuning Prop bites nasty avoided pusher configuration adds further complication person starting engines positions himself behind model helper holds front works best helper holds model starting battery Fill both fuel tanks first start inboard engine Move battery outboard engine start carefully top off both fuel tanks take off must caution both starter assistant reach over propeller arcs Fine-tune engines until sync unmistakable harmony two engines running time sounds neat also reduces damage vibration other thing need check before launching both engines running same direction Cox 049s work well pusher configurations because will run backwards alteration 24Gal126Gal Per GalPer Gal 575535 695585 825779 900867 925900 16001447 23002100 31002900 NEW Economy Fuel Castor Oil Lubricant 110078070066017000 28000 Free delivery 14525126 gal deals uSA 30 & 54 gal drums freight collect FOB Clover SC Gallon price determined nitro content & total quantity ordered SC orders add 4 % sales tax use charge card order CODs limited ups shipment Deduct 3% prepaymant Money Order Certified Check NEWPower Booster Oil scale engines. $lOlqt *30/galFioaeaeajecsso NEWPaws Rnnstsfssr scala engine $l2Iqt *38/gal freight included Uss3ozjgaldgss4ttutnodca 555 n3--I 222-7488 222-7285 February 1983 159 Designed Minimaster Easy build.easy fly.racy. rugged. fuil fight Wingspan 49% ne 15-25 Area 416 sq nE Weight 3% lbs ANDRE AIRCRAFT MODEL COMPANY ot ear V I-OnrIldur 2 Available local hobby shop AeromasterA-Ray TrainermasterH-Ray MinimasterBig H-Ray SportmasterX-Ray ttFWSLUI U usslur arso syiiniesic Yourchoice ofcastol .. 4 Gal Case %Oneor5GalCan30 Gel Drum54 Gal Drum NitroGal Per Gal EA 0%10506601030014000 5%11507801520023500 10%14009102050033000 12%15009702270036800 15%160010102580042500 25%230017503630061400 40%300025005200089700 60%3800330070500123000 10%
Edition: Model Aviation - 1983/02
Page Numbers: 58, 59, 158, 159
Free Flight DURA TION Bob Meuser REAL OLD-TIMER back got cur ious about first model Id built probably about 1930 1 could clearly remember perspec tive illustration magazine got plans visions model dim remember somewhat ascared fly fool thing somehow dad got hold local expert help out First added downthrust Id never heard such thing neat little pigtail music wire right place judged whoever would lust right Still dont think got about six ft off ground Well hit Jim Noonan former hcadperson down Oldtimer Models before peddled off Mike Mulligan rough sketch fuselage construction notion appeared Popular Mechanics Popular Sci ence somewhere around 1930 turned out knew model well drawn up tA14l tAbAZlVs 4i-minute comnct4& fron PQPVtAR MECHANICS DCC 1929 luseLage Vtctn visw SccaLe tncke Lj1mflJThF1mLJTh-YL-m Pow6r 8 traitds--liLack ruber orecuvv Coerin ricexzper t IC iG ci~l~o iiiffi - - Ftetie secLiin 40 - ztrcL_______ OpencLe view odel Aviation atrium Northwood institute West Baden IN Cezar Banks ponders whether pole-steer model Its possible may see photos models flying since facility sale Bob has comments column Bob Clemens photo Joe Vittitow Lawrenceburg KY makes easy launch Mulvihill Rubber model Bluegrass FF Champs Lexington KY Ship has simple V-dihedral 200/ stab First-place winner Photo Bill Barr full-size plans OT Models So off blank check Mulligan plans plus some new black tissue bit whatever Faykun Loren Williams others covering Mulvihill models nowadays dont go too much over 10 bucks OK return mail got plans etc sure enough seemed like right model see draw ing tiny sure least 4-ft long mere 29 inches crazy thick cut-out ribs . inverted stab huge rudder bamboo fuselage formers rybody nowadays knows bamboo proper stuff wingtips fuselage formers thick ribs did get hooked ffel 400 RAF 32 Clark Y others Brothers Wright proved tests tiny wind tunnel thin airfoils way go Tony Fokker pure hunch near can figure said Thats bunch crap besides thick wings can put structure inside doesnt create bunch drag thats way its ever since Wright brothers did some really classy engineer ing wind tunnel least monument fine woodworking practices nothing else its lot elsebut missed Reynoldsnumber effect did others time despite fact old Osborn Reynolds made scale effect crystal-clear decades ear lier Instead reading between lines realiz ing indeed thin airfoils better low Reynolds numberswhere model airplanes live slavishly copied thick airfoils used fullsize aircraft took lot turn things around W F Schmitzs book Forties its var ious interpretations did lot simply-con structed effective Ritz foils must have influence too Anyhow mid-Fifties became clear thin foils great mod els thin wings difficult make strong enough survive rigors competition fly ing strength vs aerodynamic excel lencehas name game ever since Atrium blues atrium Northwood Insti tute West Baden IN has site Indoor World Championships US National Indoor Championships two International Pea nut Grand Prix meets numerous annual National Indoor Record Trials Back back some Indoor extravaganzas have lasted better part two weeks loss atrium such events would devastating blow Free Flight About month ago going tell atrium jeopardy being felled forever swinging ball demolition crew unless lots others conjured up enough coin realm save Credits Gordon Wisniewski Tony Itali ano efforts regard Thats good part rather good part now seems future atrium especially possibility us getting access future extremely flimsy As now stands Northwood Institute planning peddle off whole worksincluding atrium So use depends what its unknown future owners choose Oh well nothing forever except perhaps Old-Timer modeling Tissue weights time time Ive collected data weights various kinds covering materials both own use possible publication order guide others always seems come nothing because time get round tuit half stuff have collected data no longer available dozen other materials have htt market suddenly occurs burden supplying information should supplier rather little old consumer supplier has to weigh dozen sheets oncea sufficient number sheets ensure good reading gram scale measure length width ruler punch few numbers eight-buck pocket calculator no terrific chore suppliers out reluctant gather publish such information products let ask Would trust supplier claimed have ultra-light con denser paper superfine tissue wouldnt publish weight-per-unit-area same because Doesnt own gram scale owns cant get hang using b Cant wont measure figure area sheet tissue c Wont divide number another d reluctant determine publish reason whatsoever such primitive informa tion products nevertheless makes great claims products certainly true weight-per-unit-area paper- cloth-like material fac tor sea factors determine applicability particular covering material particular covering job except plastic film plastic sheet condenser-paper-type materials weight after doping counts relation its porosity puncture-resistance function amount dope applied subtle factors enter too such wet strength big covering wet tissue shrinkage principal direc tion temperature humidity effects forth weight-per-unit-area raw material tells us small part what wed really like know tells us somethingand beats nuthin day Id say least product-peddler should willing poten tial customers Most Free Flighters measure weights gram scale areas square inches Continued page 158 February 1983 59 Another Pacific Acethis Sherman Gillespie built Irom CPM Products kit 722 Lennox Yreka CA 96097 cutie Thirties nepair jime Si iflC uiuegrass I-i- tflamps Wind cartwheeled Joe ws Uni Rubber model after landed causing some damage L R Joe Roger Van Arsdall OC Stewart teamed up repair damage get ship back blue Bill Barr photo ENDURANCE RUBBER MODELS THE EASY BTHE TIME MACHINE PENNY 18 Spa 1/8 OZ E ,. $495 3 PARLOR PLANES 10 Span soBs FLAPPING FLYER 24 Span I/S OZ 2PARLORTHE SLOWPOKE Span IS cOPTERS 12 Soan 5495 95i2P2flflYg5 PIaSIC Pop ** STARSHIP 2 Yard Birds 12a Full Size Plans Full Size Prop Jig pl5tc ure Illustrated Ultra Light Balsa IlA1 i Bearing Micro Wa5hS *a Pirelli Rubber W 1120 oz L-135 * *** S105 STARSHIP 8100 Williams Book $20 Order INDOOR MODEL AIRPLANES Ron WIllIams 264 pgp Over 200 IIIustraIlOflP plus 2 FREE Full SIze Plan Sheen IMS Easy B 51295 INDOOR MODEL AIRPLANES Lew GItlow 46 Pga & Over 100 IlusIratlorIs reprInt .. $395 PEA N UT POWER Hannan 80 INDOOR BALSA $695 PHUT BALSA PACK $695 JAPANESE TISSUE 6 Colors 12 Pack $350Roll ol 10 large $595 ROLL OF MICROLITE COVERING $325 CONDENSER PAPER $250WASHERS $150 RUBBER LUBE $150CEMENT $150 THRUST BEARING New TIny 50 New Dual 100 NEW MARK 1 WINDERS16l $1195 NEW SMOOTHIE WINDERS61_______$395 61 WInder $195 wlIh $25 Order ALL ORDERS & KITS ADD 10% POSTAGE Minimum postage $150 16 PG CATALOG $100 DOX Ca OARBERVILLE CA 95440 assumes engine well broken new engine will complicate fuel system problems reason Id suggest use bladder breaking engines least until youve mastered use Char/it hhoson 37/6 Ingrahani St. San go CA 92119 FF Duration/Meuser Continued page 59 models weigh few tens grams have hundred square inches wing area give take factor five ten either way So suggest appropriate unit expressing covering weights grams per 100 square inches despite mixed English metric units big purity metric system am tell can buy pres sure gauge reads pascals explain metric countries express force grams rather newtons would accordance international standards laid tripin slightly less caustic form Mike Mulligan headperson down Oldsimer Models sort agreedbut well have wait about year until makes up new catalog printing costs know So itll take awhile get ball rolling think ball needs rolling Tom Hutchinson Memorial Trophy Youve prob ably already heard Tom died wrote obituary another publication time wasnt up writing second column Immediately upon Toms death talk newsletters about perpetual trophy name brought mind images some garish oversize affair plastic angels over possibly some home-brew concoc tion designed insurance salesman mechanical engineer dust has settled well will trophy will designed built professional Tom competed events favorite Nordic A/2 Towline Glider fitting trophy will awarded top 2 score US FF Championships year Donations toward purchase trophy should sent Steve Geraghty 194 Vista Del Monte Los Gatos CA 95030 Book reviews have couple month BCs Model Airplane Building Megows catalog 1940 Darned Good Airfoils Model Builder magazine January 1974 through September l982 have couple book presielrs too airfoils book compiled Bob Stalick includes drawings coordinates all-impor tant nose radii known 45 airfoils pub lished column earlier written Bob subsequently late Tom Hutchinson cluded both table contents alpha numeric index term alphanumeric index always puzzles cant imagine being other kind index Also included re prints Eppler Effect Tom Hutchinson Read Darned-Good-Airfoil Charts Host Became Instant Airfoil Expert Painless Lesson would have nice have comments about airfoils published along would have doubled sizeand costof book least price $2 plus $50 postage handling its biggest boggin town Order Stalick 5066 NW Picadilly Circle Albany OR 97321 20-page Megow reprint enlarged some what easier reading chock full construc tion how-to-do-its including such things make wire bender balsa stripper plans simple HL Glider baby ROG stick model IS-in span fuselage model finally rubber-power Monocoupe plus lots goodies about bending bamboo balsa about making propshafts S-hooks shockabsorbing landing gears Theres section solid display models finally glossary model aviation terms sells $395 available John J Frost P0 Box 317 Covington LA 70434 remains good guide beginner Frost now pushing sixty has aviation since childhood flying TBFs anti-submarine servtce later flying everything DC-3s jets commercial passenger service has sev eral reprints works including Boys Model Airplane Book 1911 com plete Megow catalog Model Aeroplanes Engines 1917 Aircraft Armament 1917 plus lots tech manuals such early aircraft engines plus complete set origi nal factory drawings Curtiss JN4-D Jenny An ambitious project Digital dethermalizer timer item singlefunction timer Towline Gliders rubberpower models Thomas Koster Denmark man ufactures sells unit based much expensive complex FAI Power model timer mentioned column last month still fairly expensive $55 using saves just flyaway short-DT per haps well worth price Accuracy claimed better / 100 sec Time can set 6sec 9 mm 54sec steps 6 sec Setting accomplished turn ing two rotary switches minutes other seconds DT release familiar 158 Model Aviation • ENUUfl MODELI1rrhY.E GET ORGANIZED s set 4 Sturdy lies thai holdS over 4 years 01 lavorrie e zines 4 MAG FILES $495 Send $495 pies 51 00 lo postage handlatg 0GM INOUSTUES P0 BOX 388-K DOVER NH 03820 mousetrap arrangement no rotating disk suffer malfunction mounting plate 26 x 07 depth 055 weight 175 grams plus another 17 grams rechargeable bat tery lasts 800 1000 actuations between charges charger selling $20 $25 will soon available AC available charging can done 9V transistor radio battery timing cycle actuated switch con nected timer 6-in electric wire Press ing switch resets timer zero releasing starts timing action allows switch placed ahead swinging-type towhook isa forward pull towhook timer resets zero towline releasedor tow/me breaks ssithout releasing timing function actuated Now hasnt someone already done mechan ical timer Order unit Koster Digital Timers P0 Box 54 DK-3400 Hillerod Denmark First Intergalactic Ornithopter Postal Flappers get acts together December 1983 postal make flights contest records trial sanctioned FAT its affiliates such AMA mail scores rules unfortunately ornithopters flown AMA competition might cause some problems well cope rules follows Event definition An ornithopter freelyflying model aircraft derives its lift propulsion primarily flapping its wings event director made clear no flap ping-prop models would permitted total supporting surface must exceed 1000 sq dm Thats 15500 sq kid No prob lem eh supporting surface includes sur faces used obtain lift pitch control Areas measured traces around surfaces sum areas fixed supporting surfaces must exceed one-half area flapping sur faces model must powered strands extensible rubber no restriction weight model weight rubber used sneaker would rule out some models meet AMA rules some models would meet AMA rules could enter Too bad think set rules about enough information nitty-gritty con tact David W Erbach 1738 St Marys Road #702 Winnipeg Manitoba R2N 1G8 Canada Bob Meuser 4200 Gregory Si. Oakland CA 95619 Airacuda/Haught Continued page 72 things need said about safety Never try fly twins Dacron lines Always use steel lines suggest 007 steel lines 35 feet long will give performance boost will safer long run fray tangle easily Dacron Twins fun fly needs keep eye other engine during starting tuning Prop bites nasty avoided pusher configuration adds further complication person starting engines positions himself behind model helper holds front works best helper holds model starting battery Fill both fuel tanks first start inboard engine Move battery outboard engine start carefully top off both fuel tanks take off must caution both starter assistant reach over propeller arcs Fine-tune engines until sync unmistakable harmony two engines running time sounds neat also reduces damage vibration other thing need check before launching both engines running same direction Cox 049s work well pusher configurations because will run backwards alteration 24Gal126Gal Per GalPer Gal 575535 695585 825779 900867 925900 16001447 23002100 31002900 NEW Economy Fuel Castor Oil Lubricant 110078070066017000 28000 Free delivery 14525126 gal deals uSA 30 & 54 gal drums freight collect FOB Clover SC Gallon price determined nitro content & total quantity ordered SC orders add 4 % sales tax use charge card order CODs limited ups shipment Deduct 3% prepaymant Money Order Certified Check NEWPower Booster Oil scale engines. $lOlqt *30/galFioaeaeajecsso NEWPaws Rnnstsfssr scala engine $l2Iqt *38/gal freight included Uss3ozjgaldgss4ttutnodca 555 n3--I 222-7488 222-7285 February 1983 159 Designed Minimaster Easy build.easy fly.racy. rugged. fuil fight Wingspan 49% ne 15-25 Area 416 sq nE Weight 3% lbs ANDRE AIRCRAFT MODEL COMPANY ot ear V I-OnrIldur 2 Available local hobby shop AeromasterA-Ray TrainermasterH-Ray MinimasterBig H-Ray SportmasterX-Ray ttFWSLUI U usslur arso syiiniesic Yourchoice ofcastol .. 4 Gal Case %Oneor5GalCan30 Gel Drum54 Gal Drum NitroGal Per Gal EA 0%10506601030014000 5%11507801520023500 10%14009102050033000 12%15009702270036800 15%160010102580042500 25%230017503630061400 40%300025005200089700 60%3800330070500123000 10%
Edition: Model Aviation - 1983/02
Page Numbers: 58, 59, 158, 159
Free Flight DURA TION Bob Meuser REAL OLD-TIMER back got cur ious about first model Id built probably about 1930 1 could clearly remember perspec tive illustration magazine got plans visions model dim remember somewhat ascared fly fool thing somehow dad got hold local expert help out First added downthrust Id never heard such thing neat little pigtail music wire right place judged whoever would lust right Still dont think got about six ft off ground Well hit Jim Noonan former hcadperson down Oldtimer Models before peddled off Mike Mulligan rough sketch fuselage construction notion appeared Popular Mechanics Popular Sci ence somewhere around 1930 turned out knew model well drawn up tA14l tAbAZlVs 4i-minute comnct4& fron PQPVtAR MECHANICS DCC 1929 luseLage Vtctn visw SccaLe tncke Lj1mflJThF1mLJTh-YL-m Pow6r 8 traitds--liLack ruber orecuvv Coerin ricexzper t IC iG ci~l~o iiiffi - - Ftetie secLiin 40 - ztrcL_______ OpencLe view odel Aviation atrium Northwood institute West Baden IN Cezar Banks ponders whether pole-steer model Its possible may see photos models flying since facility sale Bob has comments column Bob Clemens photo Joe Vittitow Lawrenceburg KY makes easy launch Mulvihill Rubber model Bluegrass FF Champs Lexington KY Ship has simple V-dihedral 200/ stab First-place winner Photo Bill Barr full-size plans OT Models So off blank check Mulligan plans plus some new black tissue bit whatever Faykun Loren Williams others covering Mulvihill models nowadays dont go too much over 10 bucks OK return mail got plans etc sure enough seemed like right model see draw ing tiny sure least 4-ft long mere 29 inches crazy thick cut-out ribs . inverted stab huge rudder bamboo fuselage formers rybody nowadays knows bamboo proper stuff wingtips fuselage formers thick ribs did get hooked ffel 400 RAF 32 Clark Y others Brothers Wright proved tests tiny wind tunnel thin airfoils way go Tony Fokker pure hunch near can figure said Thats bunch crap besides thick wings can put structure inside doesnt create bunch drag thats way its ever since Wright brothers did some really classy engineer ing wind tunnel least monument fine woodworking practices nothing else its lot elsebut missed Reynoldsnumber effect did others time despite fact old Osborn Reynolds made scale effect crystal-clear decades ear lier Instead reading between lines realiz ing indeed thin airfoils better low Reynolds numberswhere model airplanes live slavishly copied thick airfoils used fullsize aircraft took lot turn things around W F Schmitzs book Forties its var ious interpretations did lot simply-con structed effective Ritz foils must have influence too Anyhow mid-Fifties became clear thin foils great mod els thin wings difficult make strong enough survive rigors competition fly ing strength vs aerodynamic excel lencehas name game ever since Atrium blues atrium Northwood Insti tute West Baden IN has site Indoor World Championships US National Indoor Championships two International Pea nut Grand Prix meets numerous annual National Indoor Record Trials Back back some Indoor extravaganzas have lasted better part two weeks loss atrium such events would devastating blow Free Flight About month ago going tell atrium jeopardy being felled forever swinging ball demolition crew unless lots others conjured up enough coin realm save Credits Gordon Wisniewski Tony Itali ano efforts regard Thats good part rather good part now seems future atrium especially possibility us getting access future extremely flimsy As now stands Northwood Institute planning peddle off whole worksincluding atrium So use depends what its unknown future owners choose Oh well nothing forever except perhaps Old-Timer modeling Tissue weights time time Ive collected data weights various kinds covering materials both own use possible publication order guide others always seems come nothing because time get round tuit half stuff have collected data no longer available dozen other materials have htt market suddenly occurs burden supplying information should supplier rather little old consumer supplier has to weigh dozen sheets oncea sufficient number sheets ensure good reading gram scale measure length width ruler punch few numbers eight-buck pocket calculator no terrific chore suppliers out reluctant gather publish such information products let ask Would trust supplier claimed have ultra-light con denser paper superfine tissue wouldnt publish weight-per-unit-area same because Doesnt own gram scale owns cant get hang using b Cant wont measure figure area sheet tissue c Wont divide number another d reluctant determine publish reason whatsoever such primitive informa tion products nevertheless makes great claims products certainly true weight-per-unit-area paper- cloth-like material fac tor sea factors determine applicability particular covering material particular covering job except plastic film plastic sheet condenser-paper-type materials weight after doping counts relation its porosity puncture-resistance function amount dope applied subtle factors enter too such wet strength big covering wet tissue shrinkage principal direc tion temperature humidity effects forth weight-per-unit-area raw material tells us small part what wed really like know tells us somethingand beats nuthin day Id say least product-peddler should willing poten tial customers Most Free Flighters measure weights gram scale areas square inches Continued page 158 February 1983 59 Another Pacific Acethis Sherman Gillespie built Irom CPM Products kit 722 Lennox Yreka CA 96097 cutie Thirties nepair jime Si iflC uiuegrass I-i- tflamps Wind cartwheeled Joe ws Uni Rubber model after landed causing some damage L R Joe Roger Van Arsdall OC Stewart teamed up repair damage get ship back blue Bill Barr photo ENDURANCE RUBBER MODELS THE EASY BTHE TIME MACHINE PENNY 18 Spa 1/8 OZ E ,. $495 3 PARLOR PLANES 10 Span soBs FLAPPING FLYER 24 Span I/S OZ 2PARLORTHE SLOWPOKE Span IS cOPTERS 12 Soan 5495 95i2P2flflYg5 PIaSIC Pop ** STARSHIP 2 Yard Birds 12a Full Size Plans Full Size Prop Jig pl5tc ure Illustrated Ultra Light Balsa IlA1 i Bearing Micro Wa5hS *a Pirelli Rubber W 1120 oz L-135 * *** S105 STARSHIP 8100 Williams Book $20 Order INDOOR MODEL AIRPLANES Ron WIllIams 264 pgp Over 200 IIIustraIlOflP plus 2 FREE Full SIze Plan Sheen IMS Easy B 51295 INDOOR MODEL AIRPLANES Lew GItlow 46 Pga & Over 100 IlusIratlorIs reprInt .. $395 PEA N UT POWER Hannan 80 INDOOR BALSA $695 PHUT BALSA PACK $695 JAPANESE TISSUE 6 Colors 12 Pack $350Roll ol 10 large $595 ROLL OF MICROLITE COVERING $325 CONDENSER PAPER $250WASHERS $150 RUBBER LUBE $150CEMENT $150 THRUST BEARING New TIny 50 New Dual 100 NEW MARK 1 WINDERS16l $1195 NEW SMOOTHIE WINDERS61_______$395 61 WInder $195 wlIh $25 Order ALL ORDERS & KITS ADD 10% POSTAGE Minimum postage $150 16 PG CATALOG $100 DOX Ca OARBERVILLE CA 95440 assumes engine well broken new engine will complicate fuel system problems reason Id suggest use bladder breaking engines least until youve mastered use Char/it hhoson 37/6 Ingrahani St. San go CA 92119 FF Duration/Meuser Continued page 59 models weigh few tens grams have hundred square inches wing area give take factor five ten either way So suggest appropriate unit expressing covering weights grams per 100 square inches despite mixed English metric units big purity metric system am tell can buy pres sure gauge reads pascals explain metric countries express force grams rather newtons would accordance international standards laid tripin slightly less caustic form Mike Mulligan headperson down Oldsimer Models sort agreedbut well have wait about year until makes up new catalog printing costs know So itll take awhile get ball rolling think ball needs rolling Tom Hutchinson Memorial Trophy Youve prob ably already heard Tom died wrote obituary another publication time wasnt up writing second column Immediately upon Toms death talk newsletters about perpetual trophy name brought mind images some garish oversize affair plastic angels over possibly some home-brew concoc tion designed insurance salesman mechanical engineer dust has settled well will trophy will designed built professional Tom competed events favorite Nordic A/2 Towline Glider fitting trophy will awarded top 2 score US FF Championships year Donations toward purchase trophy should sent Steve Geraghty 194 Vista Del Monte Los Gatos CA 95030 Book reviews have couple month BCs Model Airplane Building Megows catalog 1940 Darned Good Airfoils Model Builder magazine January 1974 through September l982 have couple book presielrs too airfoils book compiled Bob Stalick includes drawings coordinates all-impor tant nose radii known 45 airfoils pub lished column earlier written Bob subsequently late Tom Hutchinson cluded both table contents alpha numeric index term alphanumeric index always puzzles cant imagine being other kind index Also included re prints Eppler Effect Tom Hutchinson Read Darned-Good-Airfoil Charts Host Became Instant Airfoil Expert Painless Lesson would have nice have comments about airfoils published along would have doubled sizeand costof book least price $2 plus $50 postage handling its biggest boggin town Order Stalick 5066 NW Picadilly Circle Albany OR 97321 20-page Megow reprint enlarged some what easier reading chock full construc tion how-to-do-its including such things make wire bender balsa stripper plans simple HL Glider baby ROG stick model IS-in span fuselage model finally rubber-power Monocoupe plus lots goodies about bending bamboo balsa about making propshafts S-hooks shockabsorbing landing gears Theres section solid display models finally glossary model aviation terms sells $395 available John J Frost P0 Box 317 Covington LA 70434 remains good guide beginner Frost now pushing sixty has aviation since childhood flying TBFs anti-submarine servtce later flying everything DC-3s jets commercial passenger service has sev eral reprints works including Boys Model Airplane Book 1911 com plete Megow catalog Model Aeroplanes Engines 1917 Aircraft Armament 1917 plus lots tech manuals such early aircraft engines plus complete set origi nal factory drawings Curtiss JN4-D Jenny An ambitious project Digital dethermalizer timer item singlefunction timer Towline Gliders rubberpower models Thomas Koster Denmark man ufactures sells unit based much expensive complex FAI Power model timer mentioned column last month still fairly expensive $55 using saves just flyaway short-DT per haps well worth price Accuracy claimed better / 100 sec Time can set 6sec 9 mm 54sec steps 6 sec Setting accomplished turn ing two rotary switches minutes other seconds DT release familiar 158 Model Aviation • ENUUfl MODELI1rrhY.E GET ORGANIZED s set 4 Sturdy lies thai holdS over 4 years 01 lavorrie e zines 4 MAG FILES $495 Send $495 pies 51 00 lo postage handlatg 0GM INOUSTUES P0 BOX 388-K DOVER NH 03820 mousetrap arrangement no rotating disk suffer malfunction mounting plate 26 x 07 depth 055 weight 175 grams plus another 17 grams rechargeable bat tery lasts 800 1000 actuations between charges charger selling $20 $25 will soon available AC available charging can done 9V transistor radio battery timing cycle actuated switch con nected timer 6-in electric wire Press ing switch resets timer zero releasing starts timing action allows switch placed ahead swinging-type towhook isa forward pull towhook timer resets zero towline releasedor tow/me breaks ssithout releasing timing function actuated Now hasnt someone already done mechan ical timer Order unit Koster Digital Timers P0 Box 54 DK-3400 Hillerod Denmark First Intergalactic Ornithopter Postal Flappers get acts together December 1983 postal make flights contest records trial sanctioned FAT its affiliates such AMA mail scores rules unfortunately ornithopters flown AMA competition might cause some problems well cope rules follows Event definition An ornithopter freelyflying model aircraft derives its lift propulsion primarily flapping its wings event director made clear no flap ping-prop models would permitted total supporting surface must exceed 1000 sq dm Thats 15500 sq kid No prob lem eh supporting surface includes sur faces used obtain lift pitch control Areas measured traces around surfaces sum areas fixed supporting surfaces must exceed one-half area flapping sur faces model must powered strands extensible rubber no restriction weight model weight rubber used sneaker would rule out some models meet AMA rules some models would meet AMA rules could enter Too bad think set rules about enough information nitty-gritty con tact David W Erbach 1738 St Marys Road #702 Winnipeg Manitoba R2N 1G8 Canada Bob Meuser 4200 Gregory Si. Oakland CA 95619 Airacuda/Haught Continued page 72 things need said about safety Never try fly twins Dacron lines Always use steel lines suggest 007 steel lines 35 feet long will give performance boost will safer long run fray tangle easily Dacron Twins fun fly needs keep eye other engine during starting tuning Prop bites nasty avoided pusher configuration adds further complication person starting engines positions himself behind model helper holds front works best helper holds model starting battery Fill both fuel tanks first start inboard engine Move battery outboard engine start carefully top off both fuel tanks take off must caution both starter assistant reach over propeller arcs Fine-tune engines until sync unmistakable harmony two engines running time sounds neat also reduces damage vibration other thing need check before launching both engines running same direction Cox 049s work well pusher configurations because will run backwards alteration 24Gal126Gal Per GalPer Gal 575535 695585 825779 900867 925900 16001447 23002100 31002900 NEW Economy Fuel Castor Oil Lubricant 110078070066017000 28000 Free delivery 14525126 gal deals uSA 30 & 54 gal drums freight collect FOB Clover SC Gallon price determined nitro content & total quantity ordered SC orders add 4 % sales tax use charge card order CODs limited ups shipment Deduct 3% prepaymant Money Order Certified Check NEWPower Booster Oil scale engines. $lOlqt *30/galFioaeaeajecsso NEWPaws Rnnstsfssr scala engine $l2Iqt *38/gal freight included Uss3ozjgaldgss4ttutnodca 555 n3--I 222-7488 222-7285 February 1983 159 Designed Minimaster Easy build.easy fly.racy. rugged. fuil fight Wingspan 49% ne 15-25 Area 416 sq nE Weight 3% lbs ANDRE AIRCRAFT MODEL COMPANY ot ear V I-OnrIldur 2 Available local hobby shop AeromasterA-Ray TrainermasterH-Ray MinimasterBig H-Ray SportmasterX-Ray ttFWSLUI U usslur arso syiiniesic Yourchoice ofcastol .. 4 Gal Case %Oneor5GalCan30 Gel Drum54 Gal Drum NitroGal Per Gal EA 0%10506601030014000 5%11507801520023500 10%14009102050033000 12%15009702270036800 15%160010102580042500 25%230017503630061400 40%300025005200089700 60%3800330070500123000 10%