Free Flight Duration Harry Murphy NEW EVENT considerations As prom ised conclusion last gather ing shall part attempt step over some dust cobwebs vintage competition activities OldTimer Nostalgia Gas session enable catching up some ac tion akin what might label Modern Free Flight mind what could apropos reviewing wherefore new-event promotion such latest offering San Diego Orbiteers 020 Pee Wee 30 Event promotion new events really nothing new innovative group resume includes such organizations AMAPeanut Scale P-30 Rubber West Coast Bostonian recently 49er Event However recent club newsletter El Torbellino Charlie Yost John Oldenkamp tossed number uncomplimentary adjectives own latter endeavor 49er Event apparently feel event hasnt accomplished what originally intend ed predicting its demise Messrs Y O summed up event overly com plicated oversized overexpensive somewhat overall complex. perhaps bomb should probably dis appear nothing else other another good try putting fun back Free Flight should noted origi nal underlying purpose 49er Event attempt laid-backor entry-levelevent might entice Free Flight novice bit traditionally-competitive AA Gas event find situation rather interest ing time 49er activity initially being formulated out West Coast unknowingly same prob lem being attacked similarly small group Ohio-Indiana area via revival effort AA Payload two events 49er Event seemed attract model media press though AA Payload eventually received some special event backing NFFS couple back-to-back Nats comparative analysis would have admit AA Payload may yet have some sub stance have new model has yet flown has somewhat failed intent program since event participation point has left wanting say least Since some similarity two events maybe might have made out competition other maybe Messrs Y 0 frank analysis own event may have also flagged primary flaw events nature complexity rules models re quired meet AA Payload event has never able lay claim tremendous success either includes some rather strict regulations well rate Orbiteers have become discouraged token recep tion 49er now rebounding experience another event appears void some major problems former effort AA Payload primary idea create Threshold Gas Event fun cheap simple might tually lead participant chal lenging projects say Orbiteers Charlie Yost given credit thunking up 020 Pee Wee 30 Event rules simply list seven items no flow ery explanations simple can get 1 Engine 020 reed valve Pee Wee 2 Max Wing Span nches 3 Max Flight Time minutes 4 Minimum two wheels ROG 5 Scoring ht time divided engine run 6 Total Score total three flight scores 7 Bonus Points added ROG Naw scoring no problem says supporter John Any school kit can tweak battery-powered calculator surely can Anyhow should anyone interested few particulars El Torbellino s mailing address 3136 Old Heather Road San Diego CA 92111 Space-Age Witchhswk photo Bill Dunlop K&B 325-powered Witchhawk accompanies months modern high-rewing engine throws prop blade can bad news Photo right Gordon Smiley shows needlework required repair damage Bill Davis face engine shed nylon blade being started its good thing missed eye solution best insurance agent against throwing prop blades appears use continuous-filament fiberglass carbon reinforced epoxy-resin construction Dick Smith used prototype helix blade L K&B 65cc engine 56 Model Aviation Sierra Eagles endless flying site Bruce Hannah Jr gets ready launch Fl C Power entry D Armstrong photo Michigan Wolverine Hardy Brodersen has Sierra Eagles site Heres distinctive PAl Power model recent two-day Sierra Cup meet D Armstrong column snapped fate last fall WPAFB Nothing surface would appear out ordinary telescopic X-ray vision skeleton Bills model would extreme interest inquisitive Free Flighter Bill used abundance carbon fiber rod sheet throughout construction trailing leading edges both wing stab completely void traditional balsa seemingly meager single length 07-diameter car bon fiber rod being utilized instead obtain torsional rigidity Bill incorporated long diagonal full-depth ribs wing panel side stab addition conventional cross-chord parallel rib placements diagonal ribs began corners panel intersec tions ran diagonally-opposite corners panel giving effect large X plan view panel diagonal ribs turn capped narrow strip 007 carbon fiber sheet Talk about rigidity Surely sheet A-in steel boilerplate could have rigid Bill used carbon fiber sheet other applications well thickness sheet balsa pylon reduced A-in laminating approximately l-in-wide strips 007 carbon fiber sheet both sides balsa core leading trailing edges carbon fiber sheet also utilized fabricating fire wall permitting skimpy V-in-thick sheet plywood used flying surfaces covered light weight clear Coverite Micafilm So what does buy Well its certainly conversation piece project undertaken attempt reduce flying weight model Bill indicated effort produced threeounce-lighter model original conventionally-constructed versionbut offhand couldnt remember exactly what minor comment Bill admitted carbon fiber quite expensive about $36 invested just rods themselves Lets see thats about $12 ounceor two three times price gold Prog ress certainly expensive can remember cyanoacrylate cements $9 quarter-ounce things seem have way becoming afford able Anyway Good show Bill Safety First has consider able increase safety-related articles ing relayed about various club newslet ters past winter Some testimo nials regard hazards using some recently-developed products modeling applications frightening say least prod ucts include such items carbon fibers boron filament now universallyused cyanoacrylate CyA cements Con siderable has already said regard precautions taken use CyA carbon fiber probably least harmful three boron wire far hazardous handle apparently accentuated fact medical profession seems unprepared yet remedy minor incidents Whereas safety should foremost selection other prod ucts modeling applications knowing own personal ability utilize also very important Personally now tend avoid using CyA whenever possi ble since sinuses just will tolerate tiniest whiff fumes no means suggestion model industry should begin Ban the-Boron campaign anything like proper precautions should exercised until become accus tomed its use can remember con cerned mother tackled first l0 Comet kit Dads single-edged razor bladesand times have cut fingers since alone have probably kept Johnson & Johnson business years also did realize really high could have gotten banana-oil nitrate-dope fumes stuck nose jar longer periods time until Uncle Sam stepped fixed fumes problem well products much good modeling use Have ever sat straight pin before Wow getting fingers whacked prop engine back firedBoy smarts seemed years before chicken sticks electric starters became commonplace on. What indicates hereto fore have eventually learned heed proper safety precautions learning personal experiences experiences fellow modelers Maybe slow learners times seem eventually learn cope find corrective solutions comes down could simply wrap ourselves cotton avoid using carbon fiber boron wire cyanoacrylate etc obviously substitute materials would some degree sacrifice perform just well Unfortunately tends squelch progress would theme things American Way con tinually searching better mousetrap safety-related area ever seems gathering consider able concern Free Flighters problem flying prop blades accompanying photo taken Gor don Smiley aftereffects Bill Davis accident occurred last fall mute testimony problem seems Bill dusted off old model taken club test-flying site nonreinforced nylon prop securely tightened down ST G21/29 about 10 years parted suddenly engine being started chicken stick resultant damage obvious photo plastics notch-sensitive especially subjected long periods extreme pressure good prac tice loosen prop nut engines terminating days flying particularly if storing model away Continued page 145 July1985 57 Meredith Chamberlain rubbed lots yeast Dixielander plans come up huge 65-powered version launch produces huge quantities wind noise undivided attention Bill Dunlops K&B 35cc-powered WItchhawk looks perfectly normal outside Inside High-tech goodies make extrastrong lots lighter info text classic expressions taken Schlichting Boundary Layer Theory McGraw Hill quick-and-dirty rule-of-thumb Jumbo Scale try following really clean go 5 average drag go 4 fairly draggy outsize fliselage cross section lots struts go 3 Rubber R maximum length rubber motor can effectively stored used bunching balance problems about three times distance prop hook center gravity CG Rubber weighs roughly 2gm per lineal foot -in FAI 16gm per foot -in Sig flying all-out perform ance event turns approaching max used ratherthan assumed 75% contained program can alter formula reflect increased energy level Duration directly proportional stored energy store 10% energy given weight rubber specffied program will extend duration 10% future go Will computer-assisted design wipe out turkeys leaving nothing eagles sky will computer prove monster destroying fun aspect mod eling reducing game bunch number crunching Its too early tell few programs have available today wont really change game time can expect programs everything prop design rib spacing As computer assumes every-growing role some whittler types may throw down razor blades leave Others will face reality study computing Yes difficult life-style deci tions will have made us concerning computer think married hacker Address questions and/or bitter zomplaints either Leon Bennett mod ler and/or Rachelle Bennett hacker 6 Rivercrest Rd Bronx NY 10471 replies please include SASE FF Duration/Murphy Continued page 57 length time As engine rpms increase dangers multiply some clubs have already taken strides endorse outlawing use wood props non-reinforced plastic props high-performance engines continuous-filament fiber glass/epoxy resin concepts appear put up best defense preventing associat ed mishaps Carbon fiber fiberglassreinforced plastic props obviously quite expensive since produced cottage industry present relatively inexpensive com pared price someones eye worse sooner commercially svailable reinforced concepts hit marSignal Guard blocks random noise off-frequency signals can cause loss control air land RO models Signal Guard responds sig nals its own precisely tuned fre quency ignoring static noise craft itself Plus additional amplification allows control operators visual limit want spend time flying less time money repairing crashed model Signal Guard answer Call toll-free 1-800-468-8215 order Signal Guard TM major credit card send $9795 check money order TTBT~ II u ox 30179 Portland OR 97230 Oregon call collect 503-257-0912 90 day warranty cted dealerships available ketplace safer flying field will new ultra-high-rpm ducted fan powerplants already beginning replace traditional Schneurle main stays thus causing greater safety concerns Appropriately-reinforced epoxy propellers definite requirement engines Maybe will need mal approval procedure prop manu facturers before long similar Underwriters Laboratories service electrical industry rate begin police problem ourselves could very possibly receive consider able amount unsolicited outside aid matter does old adage go An ounce prevention worth pound cure Anyway may wish discuss matter future meeting flying club O&R diary Tim Daniels February issue fine publication Engine Collec torsJournal lists complete index whole Ohlsson Rice lineup engine products very first Ohlsson Mini ature 56 1937 final 049 effort around 1956 complete over 80 pictures associated descriptions different engine versions concepts such famous sideport 23s 60s later front-rotary-valve ver sions post-ignition series glow plug engines Tim credits Ted Enticknap provid ing majority index material July1985145 CLEVELAND GIANTSI NEW FOR GIAMTSALE BUFFS WarMs Largest Gas Plans Assaitme RNATIONALLY FAMOUS CD OUAILTE MASTER MODELS PLANS 54SDDenoinelle 21 Sd 70Connol Cot PEYSA $42 72Cor 0201/4 L&S $46 104 Con Cot PEYSA $56 62 Ronnord Bone Ike $42 96 Wright-Nonytone $48r- 77 Boeing B17G Fern $35 22 WWrnnl2I Red 1 $36 03 50 8170 Fort $25 77 W-Wnrnl2l Red L $48 6$ Dons 046A 06 $32 84 Fobber D7 Ftr 039 108 Sikor S38 Aropir $49 6$ Honnond Pete Ron 032i 60 Roe 100 SpOrt $36 72 Boylen Gee-Bee $32T 90 Boe 100 $901 $49 60 Soperrnorine S6B $24 90 Stinn Lorn Wing 056 89 Soporniorine 068 $32 80 Mortin 74 7dM-I $39 62 Corn Hoonk P-6E $42 7$ ff9ge 2400 Bonrb 542 94 CorHerln P6E Fm DUd 104 89g 0400 Ron $26 62 Loolnfreed V9 $24 60 MCfnino Clipper $55 74 Doolittlen 0-B Il $450 97 MChine Clippen 075 95 Mononeop Sport $36 68 Wentl Wfnirlnniod $32 80 Ho11 Spr Bolidog $43 68 Ryon Nonion $39 107 Aerenno C3 Spi $35 68 BBononno V ToI $29 61 Dooglo 038 Ob $32 77 Lonoonnbn Sedon $25 122 Deoglon 0-3rOb $49 73 N M rnlr Sonib $49 94 Fogen Cort Boner $45 65 MMo node B 26 $49 71 Mortin $10 Bonrb $39 8109 Monqo Rb $42 7g Tornern WW Ron 055 10009 Monqo Bomb $55 R S3 Coo 0ohk 91 1C2 $42 96 Sneo PTl7Koydet $56 r Oonhk F11C2 05499 NBOo Wdooo 901 $69 O6De8enCenretRoo534 71Doog DC3ton $22 * oonMrMollignn 035 95 200$ DC 3 T en 055 94 onnMr Molligon 545 06 Hninlnn Tenoco 13 $32 63 Boeing P26A FIr $36 108 Co 0251 4 t&S 05684 Boeing P-26A 9rr 04R 60 Doing M 2 824 69 Wooo C6 Cobin $36 68 $r ntn Bolldog Ft $30 64 Seech C17B Slog 038 29 BronortoneMnt $54 enIr C17B Stog 049 127 Oroirn teeron 909 $54 nob II Ileorro $30 73 Tronel 0000 $24 85 Look 11 Olentro 040 107 Met MO Ron $44 62 Stinnon T W SR7 016 01 Lindlne Sn tAO 311 $39 81 Stinnon TW 5R7 524 lOg Fo di PT1O T $29 122 Utinnon T W 097 038 90 Wono Toper Wiog $39 ristol FIr F2B $30 75 WentI d Lynonder $32 78 Brintol Ftr 92-B $32 100 Wont1 d Lynonder 049 118 Brintol Fe 92-B $4957 Fond Tnjnntr 4-AT$28__ 74 T-L Penno Spen 045776 Fond Trintr 4AT$45 63 Skyronbet 09591 $20114 Ford Trjntr 4-AT059 * 56 Cor Werfrb 9-40 02484 Berl-Joyoe TFJ-2$06 78 Lonk Liglrtng pg 02893 Loening C-2Arnplr$69 56 Rep Sen-Bee Ann 07458 GronnJ2-F Donk$39 74 BepSee-8 Ann9b $3978 Oronn12F Donk$56 106 Piper J-3 Cob 039 59 Gone GIV Born022 98 Look Hodnon Enib 838117 Gotfro O1V Bonn039 63 Gron 969 Helloot 02868 Brine-Winkle Bird$45 90 09 02 Tine Moth 039- 54 Cort Sonift 0993402gNot Sold Thro DeolernPrinennobjeot torhonge Anne Pence iwemcoenOrineOeenrnecminSnrt-00-Oner 1200 Otlrern 6 -3 Pottn 50oUp Add lOlL nil orders nhip9ing & inn oreto USA Con & Meo Elneonhere its 15% 25% nirl Pinteriol notnIog 0200 lienloden Prioe Lintl Pnine lint B nenrion eloire $100 nir foreign odd 0100 CLEVELAND MODEL& SUPPLY Co 18387K DRIROIT AVB CLEVELAND OHIO 44182 ytioinSerootO 5Oso 0 0 tO nn ONLY $5995 special issue have heard name before Yep guessed designer famous GOOLs talk 1949 Olathe Nats certainly elaborate accounting Ohisson engine series have ever seen under cover reference libraries Ohlsson lov er would complete copy mailing address Tim Dannel PO Box 15162n Lakewood CO 80215 believe $150 will get back issue Also additional $750 will place mailing list next six issues Money well spent good cause Four-cycle Free Flight Since began session discussion new entry-level Gas event possibility maybe also good spot launch con siderably different pigeon before close door months column thought-starter being possibility Free Flight Gas Endurance event powered neat little four bangers Past critics modern competition Free Flight bless hearts have often stated primary reason whats wrong Free Flight Gas being headlong competitiveness what needed some less-competitive events knowsome fun events such stage RC Fun Flies course therein lies insinuation competition Free Flight isnt fun counters reminding said critics about little-publicized fact RC Fun Fliers also award blasphemous trophies winners etc However shall bite lip point move right along subject hand. may should room laid-back Gas event certainly pushrod-powerplant option offers some very interesting aspects Considering engine equivalent rule formula currently use RC SAM contingent conventional engines given 40% displacement handicap direct competi tion four-cycle cousins would mean 15 two-cycle engine could replaced 21 cubic inch fourcycle 3512 4514 40/2 60/4 etc would concede probability would very romantic hang four-cycle engine business end Satellite Shocer other modern Free Flight design different type model seems likely What might guidelines such model match up engines yet correspond concept fun eventor Slow Free Flight event will Well some additional thoughts come mind resultant pleasant low-keyed sound operation engines certainly lend themselves scalelike concepts antique cabin models Thirties thereby suggesting similar configuration ROG launches slower climb-outs etc Another tempting plus potential flying gas jobs small fields much longer engine runs rather ing condemned seemingly short engine bursts currently situa tion present standard Gas events However since have always re tained personal hangup sup posed purpose RC Old-Timers much advertised opportunity fly OT Free Flight models small fields ismore clinically speakingan RC Endurance event being hidden behind mask Old-Timer movement cer tainly would venture suggest simply dump out radio gear permit new four-cycle engines SAIvI Free Flight events No offense intended OT followers aret should think new event sort affords opportunity break away regulated list approved designs OT era What might fit total purpose concept think should credited Californian Bob Oslan Bob has often made reference what calls Old Ruler event long model meets old AMA rules 1941 modeler free design build compete concept meets such parameters Basically rules clude minimum power loading 80 ounces per cubic inch engine displace ment minimum wing loading eight ounces per square foot projected area ROG requirement fuselage minimum cross-section L2/l00 L length fuselage tip prop shaft end fuselage thereby affording enough fuselage cross-section suggest beammounted cowled engines other romantic design configurations rate combo four-cycle engines model-design controls resem bling Old Ruler concept certainly thought-provoker say least Well whadayathink gang Eh What name lake Okay promise never bring subject up again See ya downwind Harry Murphy 3824 Oakwood Blvd. Anderson IN 46011 FF Old-Timers/Haught Continued page 58 Need parts Woody Bartelt Roy Johnson dba Micro Model Engineering Kirsch Municipal Airport 1301 West Lafayette Sturgis MI 49091 have just released new catalog Listed hard-to-find items such point assem blies spinners fuel tanks other parts long list ignition engines includ ing Arden Anderson Atom Atwood Baby Cyclone Bantam Bullet etc selfaddressed envelope dollar will get list purchased volumes two SAM 35 Yearbook will 146 Model Aviation DELTA PRIDE 60 SPECIFICATIONS Wing Span 58 Inches Wing Chord 14 Inches Power 60 Engine Radio 4 Channels KIT INCLUDES Full size rolled plans Easy-to-follow instructions Machine cut sanded parts Necessary hardware OLD Rt 1 Box 190 a MS 38754 Telephone 601 247-3578
Edition: Model Aviation - 1985/07
Page Numbers: 56, 57, 145, 146
Free Flight Duration Harry Murphy NEW EVENT considerations As prom ised conclusion last gather ing shall part attempt step over some dust cobwebs vintage competition activities OldTimer Nostalgia Gas session enable catching up some ac tion akin what might label Modern Free Flight mind what could apropos reviewing wherefore new-event promotion such latest offering San Diego Orbiteers 020 Pee Wee 30 Event promotion new events really nothing new innovative group resume includes such organizations AMAPeanut Scale P-30 Rubber West Coast Bostonian recently 49er Event However recent club newsletter El Torbellino Charlie Yost John Oldenkamp tossed number uncomplimentary adjectives own latter endeavor 49er Event apparently feel event hasnt accomplished what originally intend ed predicting its demise Messrs Y O summed up event overly com plicated oversized overexpensive somewhat overall complex. perhaps bomb should probably dis appear nothing else other another good try putting fun back Free Flight should noted origi nal underlying purpose 49er Event attempt laid-backor entry-levelevent might entice Free Flight novice bit traditionally-competitive AA Gas event find situation rather interest ing time 49er activity initially being formulated out West Coast unknowingly same prob lem being attacked similarly small group Ohio-Indiana area via revival effort AA Payload two events 49er Event seemed attract model media press though AA Payload eventually received some special event backing NFFS couple back-to-back Nats comparative analysis would have admit AA Payload may yet have some sub stance have new model has yet flown has somewhat failed intent program since event participation point has left wanting say least Since some similarity two events maybe might have made out competition other maybe Messrs Y 0 frank analysis own event may have also flagged primary flaw events nature complexity rules models re quired meet AA Payload event has never able lay claim tremendous success either includes some rather strict regulations well rate Orbiteers have become discouraged token recep tion 49er now rebounding experience another event appears void some major problems former effort AA Payload primary idea create Threshold Gas Event fun cheap simple might tually lead participant chal lenging projects say Orbiteers Charlie Yost given credit thunking up 020 Pee Wee 30 Event rules simply list seven items no flow ery explanations simple can get 1 Engine 020 reed valve Pee Wee 2 Max Wing Span nches 3 Max Flight Time minutes 4 Minimum two wheels ROG 5 Scoring ht time divided engine run 6 Total Score total three flight scores 7 Bonus Points added ROG Naw scoring no problem says supporter John Any school kit can tweak battery-powered calculator surely can Anyhow should anyone interested few particulars El Torbellino s mailing address 3136 Old Heather Road San Diego CA 92111 Space-Age Witchhswk photo Bill Dunlop K&B 325-powered Witchhawk accompanies months modern high-rewing engine throws prop blade can bad news Photo right Gordon Smiley shows needlework required repair damage Bill Davis face engine shed nylon blade being started its good thing missed eye solution best insurance agent against throwing prop blades appears use continuous-filament fiberglass carbon reinforced epoxy-resin construction Dick Smith used prototype helix blade L K&B 65cc engine 56 Model Aviation Sierra Eagles endless flying site Bruce Hannah Jr gets ready launch Fl C Power entry D Armstrong photo Michigan Wolverine Hardy Brodersen has Sierra Eagles site Heres distinctive PAl Power model recent two-day Sierra Cup meet D Armstrong column snapped fate last fall WPAFB Nothing surface would appear out ordinary telescopic X-ray vision skeleton Bills model would extreme interest inquisitive Free Flighter Bill used abundance carbon fiber rod sheet throughout construction trailing leading edges both wing stab completely void traditional balsa seemingly meager single length 07-diameter car bon fiber rod being utilized instead obtain torsional rigidity Bill incorporated long diagonal full-depth ribs wing panel side stab addition conventional cross-chord parallel rib placements diagonal ribs began corners panel intersec tions ran diagonally-opposite corners panel giving effect large X plan view panel diagonal ribs turn capped narrow strip 007 carbon fiber sheet Talk about rigidity Surely sheet A-in steel boilerplate could have rigid Bill used carbon fiber sheet other applications well thickness sheet balsa pylon reduced A-in laminating approximately l-in-wide strips 007 carbon fiber sheet both sides balsa core leading trailing edges carbon fiber sheet also utilized fabricating fire wall permitting skimpy V-in-thick sheet plywood used flying surfaces covered light weight clear Coverite Micafilm So what does buy Well its certainly conversation piece project undertaken attempt reduce flying weight model Bill indicated effort produced threeounce-lighter model original conventionally-constructed versionbut offhand couldnt remember exactly what minor comment Bill admitted carbon fiber quite expensive about $36 invested just rods themselves Lets see thats about $12 ounceor two three times price gold Prog ress certainly expensive can remember cyanoacrylate cements $9 quarter-ounce things seem have way becoming afford able Anyway Good show Bill Safety First has consider able increase safety-related articles ing relayed about various club newslet ters past winter Some testimo nials regard hazards using some recently-developed products modeling applications frightening say least prod ucts include such items carbon fibers boron filament now universallyused cyanoacrylate CyA cements Con siderable has already said regard precautions taken use CyA carbon fiber probably least harmful three boron wire far hazardous handle apparently accentuated fact medical profession seems unprepared yet remedy minor incidents Whereas safety should foremost selection other prod ucts modeling applications knowing own personal ability utilize also very important Personally now tend avoid using CyA whenever possi ble since sinuses just will tolerate tiniest whiff fumes no means suggestion model industry should begin Ban the-Boron campaign anything like proper precautions should exercised until become accus tomed its use can remember con cerned mother tackled first l0 Comet kit Dads single-edged razor bladesand times have cut fingers since alone have probably kept Johnson & Johnson business years also did realize really high could have gotten banana-oil nitrate-dope fumes stuck nose jar longer periods time until Uncle Sam stepped fixed fumes problem well products much good modeling use Have ever sat straight pin before Wow getting fingers whacked prop engine back firedBoy smarts seemed years before chicken sticks electric starters became commonplace on. What indicates hereto fore have eventually learned heed proper safety precautions learning personal experiences experiences fellow modelers Maybe slow learners times seem eventually learn cope find corrective solutions comes down could simply wrap ourselves cotton avoid using carbon fiber boron wire cyanoacrylate etc obviously substitute materials would some degree sacrifice perform just well Unfortunately tends squelch progress would theme things American Way con tinually searching better mousetrap safety-related area ever seems gathering consider able concern Free Flighters problem flying prop blades accompanying photo taken Gor don Smiley aftereffects Bill Davis accident occurred last fall mute testimony problem seems Bill dusted off old model taken club test-flying site nonreinforced nylon prop securely tightened down ST G21/29 about 10 years parted suddenly engine being started chicken stick resultant damage obvious photo plastics notch-sensitive especially subjected long periods extreme pressure good prac tice loosen prop nut engines terminating days flying particularly if storing model away Continued page 145 July1985 57 Meredith Chamberlain rubbed lots yeast Dixielander plans come up huge 65-powered version launch produces huge quantities wind noise undivided attention Bill Dunlops K&B 35cc-powered WItchhawk looks perfectly normal outside Inside High-tech goodies make extrastrong lots lighter info text classic expressions taken Schlichting Boundary Layer Theory McGraw Hill quick-and-dirty rule-of-thumb Jumbo Scale try following really clean go 5 average drag go 4 fairly draggy outsize fliselage cross section lots struts go 3 Rubber R maximum length rubber motor can effectively stored used bunching balance problems about three times distance prop hook center gravity CG Rubber weighs roughly 2gm per lineal foot -in FAI 16gm per foot -in Sig flying all-out perform ance event turns approaching max used ratherthan assumed 75% contained program can alter formula reflect increased energy level Duration directly proportional stored energy store 10% energy given weight rubber specffied program will extend duration 10% future go Will computer-assisted design wipe out turkeys leaving nothing eagles sky will computer prove monster destroying fun aspect mod eling reducing game bunch number crunching Its too early tell few programs have available today wont really change game time can expect programs everything prop design rib spacing As computer assumes every-growing role some whittler types may throw down razor blades leave Others will face reality study computing Yes difficult life-style deci tions will have made us concerning computer think married hacker Address questions and/or bitter zomplaints either Leon Bennett mod ler and/or Rachelle Bennett hacker 6 Rivercrest Rd Bronx NY 10471 replies please include SASE FF Duration/Murphy Continued page 57 length time As engine rpms increase dangers multiply some clubs have already taken strides endorse outlawing use wood props non-reinforced plastic props high-performance engines continuous-filament fiber glass/epoxy resin concepts appear put up best defense preventing associat ed mishaps Carbon fiber fiberglassreinforced plastic props obviously quite expensive since produced cottage industry present relatively inexpensive com pared price someones eye worse sooner commercially svailable reinforced concepts hit marSignal Guard blocks random noise off-frequency signals can cause loss control air land RO models Signal Guard responds sig nals its own precisely tuned fre quency ignoring static noise craft itself Plus additional amplification allows control operators visual limit want spend time flying less time money repairing crashed model Signal Guard answer Call toll-free 1-800-468-8215 order Signal Guard TM major credit card send $9795 check money order TTBT~ II u ox 30179 Portland OR 97230 Oregon call collect 503-257-0912 90 day warranty cted dealerships available ketplace safer flying field will new ultra-high-rpm ducted fan powerplants already beginning replace traditional Schneurle main stays thus causing greater safety concerns Appropriately-reinforced epoxy propellers definite requirement engines Maybe will need mal approval procedure prop manu facturers before long similar Underwriters Laboratories service electrical industry rate begin police problem ourselves could very possibly receive consider able amount unsolicited outside aid matter does old adage go An ounce prevention worth pound cure Anyway may wish discuss matter future meeting flying club O&R diary Tim Daniels February issue fine publication Engine Collec torsJournal lists complete index whole Ohlsson Rice lineup engine products very first Ohlsson Mini ature 56 1937 final 049 effort around 1956 complete over 80 pictures associated descriptions different engine versions concepts such famous sideport 23s 60s later front-rotary-valve ver sions post-ignition series glow plug engines Tim credits Ted Enticknap provid ing majority index material July1985145 CLEVELAND GIANTSI NEW FOR GIAMTSALE BUFFS WarMs Largest Gas Plans Assaitme RNATIONALLY FAMOUS CD OUAILTE MASTER MODELS PLANS 54SDDenoinelle 21 Sd 70Connol Cot PEYSA $42 72Cor 0201/4 L&S $46 104 Con Cot PEYSA $56 62 Ronnord Bone Ike $42 96 Wright-Nonytone $48r- 77 Boeing B17G Fern $35 22 WWrnnl2I Red 1 $36 03 50 8170 Fort $25 77 W-Wnrnl2l Red L $48 6$ Dons 046A 06 $32 84 Fobber D7 Ftr 039 108 Sikor S38 Aropir $49 6$ Honnond Pete Ron 032i 60 Roe 100 SpOrt $36 72 Boylen Gee-Bee $32T 90 Boe 100 $901 $49 60 Soperrnorine S6B $24 90 Stinn Lorn Wing 056 89 Soporniorine 068 $32 80 Mortin 74 7dM-I $39 62 Corn Hoonk P-6E $42 7$ ff9ge 2400 Bonrb 542 94 CorHerln P6E Fm DUd 104 89g 0400 Ron $26 62 Loolnfreed V9 $24 60 MCfnino Clipper $55 74 Doolittlen 0-B Il $450 97 MChine Clippen 075 95 Mononeop Sport $36 68 Wentl Wfnirlnniod $32 80 Ho11 Spr Bolidog $43 68 Ryon Nonion $39 107 Aerenno C3 Spi $35 68 BBononno V ToI $29 61 Dooglo 038 Ob $32 77 Lonoonnbn Sedon $25 122 Deoglon 0-3rOb $49 73 N M rnlr Sonib $49 94 Fogen Cort Boner $45 65 MMo node B 26 $49 71 Mortin $10 Bonrb $39 8109 Monqo Rb $42 7g Tornern WW Ron 055 10009 Monqo Bomb $55 R S3 Coo 0ohk 91 1C2 $42 96 Sneo PTl7Koydet $56 r Oonhk F11C2 05499 NBOo Wdooo 901 $69 O6De8enCenretRoo534 71Doog DC3ton $22 * oonMrMollignn 035 95 200$ DC 3 T en 055 94 onnMr Molligon 545 06 Hninlnn Tenoco 13 $32 63 Boeing P26A FIr $36 108 Co 0251 4 t&S 05684 Boeing P-26A 9rr 04R 60 Doing M 2 824 69 Wooo C6 Cobin $36 68 $r ntn Bolldog Ft $30 64 Seech C17B Slog 038 29 BronortoneMnt $54 enIr C17B Stog 049 127 Oroirn teeron 909 $54 nob II Ileorro $30 73 Tronel 0000 $24 85 Look 11 Olentro 040 107 Met MO Ron $44 62 Stinnon T W SR7 016 01 Lindlne Sn tAO 311 $39 81 Stinnon TW 5R7 524 lOg Fo di PT1O T $29 122 Utinnon T W 097 038 90 Wono Toper Wiog $39 ristol FIr F2B $30 75 WentI d Lynonder $32 78 Brintol Ftr 92-B $32 100 Wont1 d Lynonder 049 118 Brintol Fe 92-B $4957 Fond Tnjnntr 4-AT$28__ 74 T-L Penno Spen 045776 Fond Trintr 4AT$45 63 Skyronbet 09591 $20114 Ford Trjntr 4-AT059 * 56 Cor Werfrb 9-40 02484 Berl-Joyoe TFJ-2$06 78 Lonk Liglrtng pg 02893 Loening C-2Arnplr$69 56 Rep Sen-Bee Ann 07458 GronnJ2-F Donk$39 74 BepSee-8 Ann9b $3978 Oronn12F Donk$56 106 Piper J-3 Cob 039 59 Gone GIV Born022 98 Look Hodnon Enib 838117 Gotfro O1V Bonn039 63 Gron 969 Helloot 02868 Brine-Winkle Bird$45 90 09 02 Tine Moth 039- 54 Cort Sonift 0993402gNot Sold Thro DeolernPrinennobjeot torhonge Anne Pence iwemcoenOrineOeenrnecminSnrt-00-Oner 1200 Otlrern 6 -3 Pottn 50oUp Add lOlL nil orders nhip9ing & inn oreto USA Con & Meo Elneonhere its 15% 25% nirl Pinteriol notnIog 0200 lienloden Prioe Lintl Pnine lint B nenrion eloire $100 nir foreign odd 0100 CLEVELAND MODEL& SUPPLY Co 18387K DRIROIT AVB CLEVELAND OHIO 44182 ytioinSerootO 5Oso 0 0 tO nn ONLY $5995 special issue have heard name before Yep guessed designer famous GOOLs talk 1949 Olathe Nats certainly elaborate accounting Ohisson engine series have ever seen under cover reference libraries Ohlsson lov er would complete copy mailing address Tim Dannel PO Box 15162n Lakewood CO 80215 believe $150 will get back issue Also additional $750 will place mailing list next six issues Money well spent good cause Four-cycle Free Flight Since began session discussion new entry-level Gas event possibility maybe also good spot launch con siderably different pigeon before close door months column thought-starter being possibility Free Flight Gas Endurance event powered neat little four bangers Past critics modern competition Free Flight bless hearts have often stated primary reason whats wrong Free Flight Gas being headlong competitiveness what needed some less-competitive events knowsome fun events such stage RC Fun Flies course therein lies insinuation competition Free Flight isnt fun counters reminding said critics about little-publicized fact RC Fun Fliers also award blasphemous trophies winners etc However shall bite lip point move right along subject hand. may should room laid-back Gas event certainly pushrod-powerplant option offers some very interesting aspects Considering engine equivalent rule formula currently use RC SAM contingent conventional engines given 40% displacement handicap direct competi tion four-cycle cousins would mean 15 two-cycle engine could replaced 21 cubic inch fourcycle 3512 4514 40/2 60/4 etc would concede probability would very romantic hang four-cycle engine business end Satellite Shocer other modern Free Flight design different type model seems likely What might guidelines such model match up engines yet correspond concept fun eventor Slow Free Flight event will Well some additional thoughts come mind resultant pleasant low-keyed sound operation engines certainly lend themselves scalelike concepts antique cabin models Thirties thereby suggesting similar configuration ROG launches slower climb-outs etc Another tempting plus potential flying gas jobs small fields much longer engine runs rather ing condemned seemingly short engine bursts currently situa tion present standard Gas events However since have always re tained personal hangup sup posed purpose RC Old-Timers much advertised opportunity fly OT Free Flight models small fields ismore clinically speakingan RC Endurance event being hidden behind mask Old-Timer movement cer tainly would venture suggest simply dump out radio gear permit new four-cycle engines SAIvI Free Flight events No offense intended OT followers aret should think new event sort affords opportunity break away regulated list approved designs OT era What might fit total purpose concept think should credited Californian Bob Oslan Bob has often made reference what calls Old Ruler event long model meets old AMA rules 1941 modeler free design build compete concept meets such parameters Basically rules clude minimum power loading 80 ounces per cubic inch engine displace ment minimum wing loading eight ounces per square foot projected area ROG requirement fuselage minimum cross-section L2/l00 L length fuselage tip prop shaft end fuselage thereby affording enough fuselage cross-section suggest beammounted cowled engines other romantic design configurations rate combo four-cycle engines model-design controls resem bling Old Ruler concept certainly thought-provoker say least Well whadayathink gang Eh What name lake Okay promise never bring subject up again See ya downwind Harry Murphy 3824 Oakwood Blvd. Anderson IN 46011 FF Old-Timers/Haught Continued page 58 Need parts Woody Bartelt Roy Johnson dba Micro Model Engineering Kirsch Municipal Airport 1301 West Lafayette Sturgis MI 49091 have just released new catalog Listed hard-to-find items such point assem blies spinners fuel tanks other parts long list ignition engines includ ing Arden Anderson Atom Atwood Baby Cyclone Bantam Bullet etc selfaddressed envelope dollar will get list purchased volumes two SAM 35 Yearbook will 146 Model Aviation DELTA PRIDE 60 SPECIFICATIONS Wing Span 58 Inches Wing Chord 14 Inches Power 60 Engine Radio 4 Channels KIT INCLUDES Full size rolled plans Easy-to-follow instructions Machine cut sanded parts Necessary hardware OLD Rt 1 Box 190 a MS 38754 Telephone 601 247-3578
Edition: Model Aviation - 1985/07
Page Numbers: 56, 57, 145, 146
Free Flight Duration Harry Murphy NEW EVENT considerations As prom ised conclusion last gather ing shall part attempt step over some dust cobwebs vintage competition activities OldTimer Nostalgia Gas session enable catching up some ac tion akin what might label Modern Free Flight mind what could apropos reviewing wherefore new-event promotion such latest offering San Diego Orbiteers 020 Pee Wee 30 Event promotion new events really nothing new innovative group resume includes such organizations AMAPeanut Scale P-30 Rubber West Coast Bostonian recently 49er Event However recent club newsletter El Torbellino Charlie Yost John Oldenkamp tossed number uncomplimentary adjectives own latter endeavor 49er Event apparently feel event hasnt accomplished what originally intend ed predicting its demise Messrs Y O summed up event overly com plicated oversized overexpensive somewhat overall complex. perhaps bomb should probably dis appear nothing else other another good try putting fun back Free Flight should noted origi nal underlying purpose 49er Event attempt laid-backor entry-levelevent might entice Free Flight novice bit traditionally-competitive AA Gas event find situation rather interest ing time 49er activity initially being formulated out West Coast unknowingly same prob lem being attacked similarly small group Ohio-Indiana area via revival effort AA Payload two events 49er Event seemed attract model media press though AA Payload eventually received some special event backing NFFS couple back-to-back Nats comparative analysis would have admit AA Payload may yet have some sub stance have new model has yet flown has somewhat failed intent program since event participation point has left wanting say least Since some similarity two events maybe might have made out competition other maybe Messrs Y 0 frank analysis own event may have also flagged primary flaw events nature complexity rules models re quired meet AA Payload event has never able lay claim tremendous success either includes some rather strict regulations well rate Orbiteers have become discouraged token recep tion 49er now rebounding experience another event appears void some major problems former effort AA Payload primary idea create Threshold Gas Event fun cheap simple might tually lead participant chal lenging projects say Orbiteers Charlie Yost given credit thunking up 020 Pee Wee 30 Event rules simply list seven items no flow ery explanations simple can get 1 Engine 020 reed valve Pee Wee 2 Max Wing Span nches 3 Max Flight Time minutes 4 Minimum two wheels ROG 5 Scoring ht time divided engine run 6 Total Score total three flight scores 7 Bonus Points added ROG Naw scoring no problem says supporter John Any school kit can tweak battery-powered calculator surely can Anyhow should anyone interested few particulars El Torbellino s mailing address 3136 Old Heather Road San Diego CA 92111 Space-Age Witchhswk photo Bill Dunlop K&B 325-powered Witchhawk accompanies months modern high-rewing engine throws prop blade can bad news Photo right Gordon Smiley shows needlework required repair damage Bill Davis face engine shed nylon blade being started its good thing missed eye solution best insurance agent against throwing prop blades appears use continuous-filament fiberglass carbon reinforced epoxy-resin construction Dick Smith used prototype helix blade L K&B 65cc engine 56 Model Aviation Sierra Eagles endless flying site Bruce Hannah Jr gets ready launch Fl C Power entry D Armstrong photo Michigan Wolverine Hardy Brodersen has Sierra Eagles site Heres distinctive PAl Power model recent two-day Sierra Cup meet D Armstrong column snapped fate last fall WPAFB Nothing surface would appear out ordinary telescopic X-ray vision skeleton Bills model would extreme interest inquisitive Free Flighter Bill used abundance carbon fiber rod sheet throughout construction trailing leading edges both wing stab completely void traditional balsa seemingly meager single length 07-diameter car bon fiber rod being utilized instead obtain torsional rigidity Bill incorporated long diagonal full-depth ribs wing panel side stab addition conventional cross-chord parallel rib placements diagonal ribs began corners panel intersec tions ran diagonally-opposite corners panel giving effect large X plan view panel diagonal ribs turn capped narrow strip 007 carbon fiber sheet Talk about rigidity Surely sheet A-in steel boilerplate could have rigid Bill used carbon fiber sheet other applications well thickness sheet balsa pylon reduced A-in laminating approximately l-in-wide strips 007 carbon fiber sheet both sides balsa core leading trailing edges carbon fiber sheet also utilized fabricating fire wall permitting skimpy V-in-thick sheet plywood used flying surfaces covered light weight clear Coverite Micafilm So what does buy Well its certainly conversation piece project undertaken attempt reduce flying weight model Bill indicated effort produced threeounce-lighter model original conventionally-constructed versionbut offhand couldnt remember exactly what minor comment Bill admitted carbon fiber quite expensive about $36 invested just rods themselves Lets see thats about $12 ounceor two three times price gold Prog ress certainly expensive can remember cyanoacrylate cements $9 quarter-ounce things seem have way becoming afford able Anyway Good show Bill Safety First has consider able increase safety-related articles ing relayed about various club newslet ters past winter Some testimo nials regard hazards using some recently-developed products modeling applications frightening say least prod ucts include such items carbon fibers boron filament now universallyused cyanoacrylate CyA cements Con siderable has already said regard precautions taken use CyA carbon fiber probably least harmful three boron wire far hazardous handle apparently accentuated fact medical profession seems unprepared yet remedy minor incidents Whereas safety should foremost selection other prod ucts modeling applications knowing own personal ability utilize also very important Personally now tend avoid using CyA whenever possi ble since sinuses just will tolerate tiniest whiff fumes no means suggestion model industry should begin Ban the-Boron campaign anything like proper precautions should exercised until become accus tomed its use can remember con cerned mother tackled first l0 Comet kit Dads single-edged razor bladesand times have cut fingers since alone have probably kept Johnson & Johnson business years also did realize really high could have gotten banana-oil nitrate-dope fumes stuck nose jar longer periods time until Uncle Sam stepped fixed fumes problem well products much good modeling use Have ever sat straight pin before Wow getting fingers whacked prop engine back firedBoy smarts seemed years before chicken sticks electric starters became commonplace on. What indicates hereto fore have eventually learned heed proper safety precautions learning personal experiences experiences fellow modelers Maybe slow learners times seem eventually learn cope find corrective solutions comes down could simply wrap ourselves cotton avoid using carbon fiber boron wire cyanoacrylate etc obviously substitute materials would some degree sacrifice perform just well Unfortunately tends squelch progress would theme things American Way con tinually searching better mousetrap safety-related area ever seems gathering consider able concern Free Flighters problem flying prop blades accompanying photo taken Gor don Smiley aftereffects Bill Davis accident occurred last fall mute testimony problem seems Bill dusted off old model taken club test-flying site nonreinforced nylon prop securely tightened down ST G21/29 about 10 years parted suddenly engine being started chicken stick resultant damage obvious photo plastics notch-sensitive especially subjected long periods extreme pressure good prac tice loosen prop nut engines terminating days flying particularly if storing model away Continued page 145 July1985 57 Meredith Chamberlain rubbed lots yeast Dixielander plans come up huge 65-powered version launch produces huge quantities wind noise undivided attention Bill Dunlops K&B 35cc-powered WItchhawk looks perfectly normal outside Inside High-tech goodies make extrastrong lots lighter info text classic expressions taken Schlichting Boundary Layer Theory McGraw Hill quick-and-dirty rule-of-thumb Jumbo Scale try following really clean go 5 average drag go 4 fairly draggy outsize fliselage cross section lots struts go 3 Rubber R maximum length rubber motor can effectively stored used bunching balance problems about three times distance prop hook center gravity CG Rubber weighs roughly 2gm per lineal foot -in FAI 16gm per foot -in Sig flying all-out perform ance event turns approaching max used ratherthan assumed 75% contained program can alter formula reflect increased energy level Duration directly proportional stored energy store 10% energy given weight rubber specffied program will extend duration 10% future go Will computer-assisted design wipe out turkeys leaving nothing eagles sky will computer prove monster destroying fun aspect mod eling reducing game bunch number crunching Its too early tell few programs have available today wont really change game time can expect programs everything prop design rib spacing As computer assumes every-growing role some whittler types may throw down razor blades leave Others will face reality study computing Yes difficult life-style deci tions will have made us concerning computer think married hacker Address questions and/or bitter zomplaints either Leon Bennett mod ler and/or Rachelle Bennett hacker 6 Rivercrest Rd Bronx NY 10471 replies please include SASE FF Duration/Murphy Continued page 57 length time As engine rpms increase dangers multiply some clubs have already taken strides endorse outlawing use wood props non-reinforced plastic props high-performance engines continuous-filament fiber glass/epoxy resin concepts appear put up best defense preventing associat ed mishaps Carbon fiber fiberglassreinforced plastic props obviously quite expensive since produced cottage industry present relatively inexpensive com pared price someones eye worse sooner commercially svailable reinforced concepts hit marSignal Guard blocks random noise off-frequency signals can cause loss control air land RO models Signal Guard responds sig nals its own precisely tuned fre quency ignoring static noise craft itself Plus additional amplification allows control operators visual limit want spend time flying less time money repairing crashed model Signal Guard answer Call toll-free 1-800-468-8215 order Signal Guard TM major credit card send $9795 check money order TTBT~ II u ox 30179 Portland OR 97230 Oregon call collect 503-257-0912 90 day warranty cted dealerships available ketplace safer flying field will new ultra-high-rpm ducted fan powerplants already beginning replace traditional Schneurle main stays thus causing greater safety concerns Appropriately-reinforced epoxy propellers definite requirement engines Maybe will need mal approval procedure prop manu facturers before long similar Underwriters Laboratories service electrical industry rate begin police problem ourselves could very possibly receive consider able amount unsolicited outside aid matter does old adage go An ounce prevention worth pound cure Anyway may wish discuss matter future meeting flying club O&R diary Tim Daniels February issue fine publication Engine Collec torsJournal lists complete index whole Ohlsson Rice lineup engine products very first Ohlsson Mini ature 56 1937 final 049 effort around 1956 complete over 80 pictures associated descriptions different engine versions concepts such famous sideport 23s 60s later front-rotary-valve ver sions post-ignition series glow plug engines Tim credits Ted Enticknap provid ing majority index material July1985145 CLEVELAND GIANTSI NEW FOR GIAMTSALE BUFFS WarMs Largest Gas Plans Assaitme RNATIONALLY FAMOUS CD OUAILTE MASTER MODELS PLANS 54SDDenoinelle 21 Sd 70Connol Cot PEYSA $42 72Cor 0201/4 L&S $46 104 Con Cot PEYSA $56 62 Ronnord Bone Ike $42 96 Wright-Nonytone $48r- 77 Boeing B17G Fern $35 22 WWrnnl2I Red 1 $36 03 50 8170 Fort $25 77 W-Wnrnl2l Red L $48 6$ Dons 046A 06 $32 84 Fobber D7 Ftr 039 108 Sikor S38 Aropir $49 6$ Honnond Pete Ron 032i 60 Roe 100 SpOrt $36 72 Boylen Gee-Bee $32T 90 Boe 100 $901 $49 60 Soperrnorine S6B $24 90 Stinn Lorn Wing 056 89 Soporniorine 068 $32 80 Mortin 74 7dM-I $39 62 Corn Hoonk P-6E $42 7$ ff9ge 2400 Bonrb 542 94 CorHerln P6E Fm DUd 104 89g 0400 Ron $26 62 Loolnfreed V9 $24 60 MCfnino Clipper $55 74 Doolittlen 0-B Il $450 97 MChine Clippen 075 95 Mononeop Sport $36 68 Wentl Wfnirlnniod $32 80 Ho11 Spr Bolidog $43 68 Ryon Nonion $39 107 Aerenno C3 Spi $35 68 BBononno V ToI $29 61 Dooglo 038 Ob $32 77 Lonoonnbn Sedon $25 122 Deoglon 0-3rOb $49 73 N M rnlr Sonib $49 94 Fogen Cort Boner $45 65 MMo node B 26 $49 71 Mortin $10 Bonrb $39 8109 Monqo Rb $42 7g Tornern WW Ron 055 10009 Monqo Bomb $55 R S3 Coo 0ohk 91 1C2 $42 96 Sneo PTl7Koydet $56 r Oonhk F11C2 05499 NBOo Wdooo 901 $69 O6De8enCenretRoo534 71Doog DC3ton $22 * oonMrMollignn 035 95 200$ DC 3 T en 055 94 onnMr Molligon 545 06 Hninlnn Tenoco 13 $32 63 Boeing P26A FIr $36 108 Co 0251 4 t&S 05684 Boeing P-26A 9rr 04R 60 Doing M 2 824 69 Wooo C6 Cobin $36 68 $r ntn Bolldog Ft $30 64 Seech C17B Slog 038 29 BronortoneMnt $54 enIr C17B Stog 049 127 Oroirn teeron 909 $54 nob II Ileorro $30 73 Tronel 0000 $24 85 Look 11 Olentro 040 107 Met MO Ron $44 62 Stinnon T W SR7 016 01 Lindlne Sn tAO 311 $39 81 Stinnon TW 5R7 524 lOg Fo di PT1O T $29 122 Utinnon T W 097 038 90 Wono Toper Wiog $39 ristol FIr F2B $30 75 WentI d Lynonder $32 78 Brintol Ftr 92-B $32 100 Wont1 d Lynonder 049 118 Brintol Fe 92-B $4957 Fond Tnjnntr 4-AT$28__ 74 T-L Penno Spen 045776 Fond Trintr 4AT$45 63 Skyronbet 09591 $20114 Ford Trjntr 4-AT059 * 56 Cor Werfrb 9-40 02484 Berl-Joyoe TFJ-2$06 78 Lonk Liglrtng pg 02893 Loening C-2Arnplr$69 56 Rep Sen-Bee Ann 07458 GronnJ2-F Donk$39 74 BepSee-8 Ann9b $3978 Oronn12F Donk$56 106 Piper J-3 Cob 039 59 Gone GIV Born022 98 Look Hodnon Enib 838117 Gotfro O1V Bonn039 63 Gron 969 Helloot 02868 Brine-Winkle Bird$45 90 09 02 Tine Moth 039- 54 Cort Sonift 0993402gNot Sold Thro DeolernPrinennobjeot torhonge Anne Pence iwemcoenOrineOeenrnecminSnrt-00-Oner 1200 Otlrern 6 -3 Pottn 50oUp Add lOlL nil orders nhip9ing & inn oreto USA Con & Meo Elneonhere its 15% 25% nirl Pinteriol notnIog 0200 lienloden Prioe Lintl Pnine lint B nenrion eloire $100 nir foreign odd 0100 CLEVELAND MODEL& SUPPLY Co 18387K DRIROIT AVB CLEVELAND OHIO 44182 ytioinSerootO 5Oso 0 0 tO nn ONLY $5995 special issue have heard name before Yep guessed designer famous GOOLs talk 1949 Olathe Nats certainly elaborate accounting Ohisson engine series have ever seen under cover reference libraries Ohlsson lov er would complete copy mailing address Tim Dannel PO Box 15162n Lakewood CO 80215 believe $150 will get back issue Also additional $750 will place mailing list next six issues Money well spent good cause Four-cycle Free Flight Since began session discussion new entry-level Gas event possibility maybe also good spot launch con siderably different pigeon before close door months column thought-starter being possibility Free Flight Gas Endurance event powered neat little four bangers Past critics modern competition Free Flight bless hearts have often stated primary reason whats wrong Free Flight Gas being headlong competitiveness what needed some less-competitive events knowsome fun events such stage RC Fun Flies course therein lies insinuation competition Free Flight isnt fun counters reminding said critics about little-publicized fact RC Fun Fliers also award blasphemous trophies winners etc However shall bite lip point move right along subject hand. may should room laid-back Gas event certainly pushrod-powerplant option offers some very interesting aspects Considering engine equivalent rule formula currently use RC SAM contingent conventional engines given 40% displacement handicap direct competi tion four-cycle cousins would mean 15 two-cycle engine could replaced 21 cubic inch fourcycle 3512 4514 40/2 60/4 etc would concede probability would very romantic hang four-cycle engine business end Satellite Shocer other modern Free Flight design different type model seems likely What might guidelines such model match up engines yet correspond concept fun eventor Slow Free Flight event will Well some additional thoughts come mind resultant pleasant low-keyed sound operation engines certainly lend themselves scalelike concepts antique cabin models Thirties thereby suggesting similar configuration ROG launches slower climb-outs etc Another tempting plus potential flying gas jobs small fields much longer engine runs rather ing condemned seemingly short engine bursts currently situa tion present standard Gas events However since have always re tained personal hangup sup posed purpose RC Old-Timers much advertised opportunity fly OT Free Flight models small fields ismore clinically speakingan RC Endurance event being hidden behind mask Old-Timer movement cer tainly would venture suggest simply dump out radio gear permit new four-cycle engines SAIvI Free Flight events No offense intended OT followers aret should think new event sort affords opportunity break away regulated list approved designs OT era What might fit total purpose concept think should credited Californian Bob Oslan Bob has often made reference what calls Old Ruler event long model meets old AMA rules 1941 modeler free design build compete concept meets such parameters Basically rules clude minimum power loading 80 ounces per cubic inch engine displace ment minimum wing loading eight ounces per square foot projected area ROG requirement fuselage minimum cross-section L2/l00 L length fuselage tip prop shaft end fuselage thereby affording enough fuselage cross-section suggest beammounted cowled engines other romantic design configurations rate combo four-cycle engines model-design controls resem bling Old Ruler concept certainly thought-provoker say least Well whadayathink gang Eh What name lake Okay promise never bring subject up again See ya downwind Harry Murphy 3824 Oakwood Blvd. Anderson IN 46011 FF Old-Timers/Haught Continued page 58 Need parts Woody Bartelt Roy Johnson dba Micro Model Engineering Kirsch Municipal Airport 1301 West Lafayette Sturgis MI 49091 have just released new catalog Listed hard-to-find items such point assem blies spinners fuel tanks other parts long list ignition engines includ ing Arden Anderson Atom Atwood Baby Cyclone Bantam Bullet etc selfaddressed envelope dollar will get list purchased volumes two SAM 35 Yearbook will 146 Model Aviation DELTA PRIDE 60 SPECIFICATIONS Wing Span 58 Inches Wing Chord 14 Inches Power 60 Engine Radio 4 Channels KIT INCLUDES Full size rolled plans Easy-to-follow instructions Machine cut sanded parts Necessary hardware OLD Rt 1 Box 190 a MS 38754 Telephone 601 247-3578
Edition: Model Aviation - 1985/07
Page Numbers: 56, 57, 145, 146
Free Flight Duration Harry Murphy NEW EVENT considerations As prom ised conclusion last gather ing shall part attempt step over some dust cobwebs vintage competition activities OldTimer Nostalgia Gas session enable catching up some ac tion akin what might label Modern Free Flight mind what could apropos reviewing wherefore new-event promotion such latest offering San Diego Orbiteers 020 Pee Wee 30 Event promotion new events really nothing new innovative group resume includes such organizations AMAPeanut Scale P-30 Rubber West Coast Bostonian recently 49er Event However recent club newsletter El Torbellino Charlie Yost John Oldenkamp tossed number uncomplimentary adjectives own latter endeavor 49er Event apparently feel event hasnt accomplished what originally intend ed predicting its demise Messrs Y O summed up event overly com plicated oversized overexpensive somewhat overall complex. perhaps bomb should probably dis appear nothing else other another good try putting fun back Free Flight should noted origi nal underlying purpose 49er Event attempt laid-backor entry-levelevent might entice Free Flight novice bit traditionally-competitive AA Gas event find situation rather interest ing time 49er activity initially being formulated out West Coast unknowingly same prob lem being attacked similarly small group Ohio-Indiana area via revival effort AA Payload two events 49er Event seemed attract model media press though AA Payload eventually received some special event backing NFFS couple back-to-back Nats comparative analysis would have admit AA Payload may yet have some sub stance have new model has yet flown has somewhat failed intent program since event participation point has left wanting say least Since some similarity two events maybe might have made out competition other maybe Messrs Y 0 frank analysis own event may have also flagged primary flaw events nature complexity rules models re quired meet AA Payload event has never able lay claim tremendous success either includes some rather strict regulations well rate Orbiteers have become discouraged token recep tion 49er now rebounding experience another event appears void some major problems former effort AA Payload primary idea create Threshold Gas Event fun cheap simple might tually lead participant chal lenging projects say Orbiteers Charlie Yost given credit thunking up 020 Pee Wee 30 Event rules simply list seven items no flow ery explanations simple can get 1 Engine 020 reed valve Pee Wee 2 Max Wing Span nches 3 Max Flight Time minutes 4 Minimum two wheels ROG 5 Scoring ht time divided engine run 6 Total Score total three flight scores 7 Bonus Points added ROG Naw scoring no problem says supporter John Any school kit can tweak battery-powered calculator surely can Anyhow should anyone interested few particulars El Torbellino s mailing address 3136 Old Heather Road San Diego CA 92111 Space-Age Witchhswk photo Bill Dunlop K&B 325-powered Witchhawk accompanies months modern high-rewing engine throws prop blade can bad news Photo right Gordon Smiley shows needlework required repair damage Bill Davis face engine shed nylon blade being started its good thing missed eye solution best insurance agent against throwing prop blades appears use continuous-filament fiberglass carbon reinforced epoxy-resin construction Dick Smith used prototype helix blade L K&B 65cc engine 56 Model Aviation Sierra Eagles endless flying site Bruce Hannah Jr gets ready launch Fl C Power entry D Armstrong photo Michigan Wolverine Hardy Brodersen has Sierra Eagles site Heres distinctive PAl Power model recent two-day Sierra Cup meet D Armstrong column snapped fate last fall WPAFB Nothing surface would appear out ordinary telescopic X-ray vision skeleton Bills model would extreme interest inquisitive Free Flighter Bill used abundance carbon fiber rod sheet throughout construction trailing leading edges both wing stab completely void traditional balsa seemingly meager single length 07-diameter car bon fiber rod being utilized instead obtain torsional rigidity Bill incorporated long diagonal full-depth ribs wing panel side stab addition conventional cross-chord parallel rib placements diagonal ribs began corners panel intersec tions ran diagonally-opposite corners panel giving effect large X plan view panel diagonal ribs turn capped narrow strip 007 carbon fiber sheet Talk about rigidity Surely sheet A-in steel boilerplate could have rigid Bill used carbon fiber sheet other applications well thickness sheet balsa pylon reduced A-in laminating approximately l-in-wide strips 007 carbon fiber sheet both sides balsa core leading trailing edges carbon fiber sheet also utilized fabricating fire wall permitting skimpy V-in-thick sheet plywood used flying surfaces covered light weight clear Coverite Micafilm So what does buy Well its certainly conversation piece project undertaken attempt reduce flying weight model Bill indicated effort produced threeounce-lighter model original conventionally-constructed versionbut offhand couldnt remember exactly what minor comment Bill admitted carbon fiber quite expensive about $36 invested just rods themselves Lets see thats about $12 ounceor two three times price gold Prog ress certainly expensive can remember cyanoacrylate cements $9 quarter-ounce things seem have way becoming afford able Anyway Good show Bill Safety First has consider able increase safety-related articles ing relayed about various club newslet ters past winter Some testimo nials regard hazards using some recently-developed products modeling applications frightening say least prod ucts include such items carbon fibers boron filament now universallyused cyanoacrylate CyA cements Con siderable has already said regard precautions taken use CyA carbon fiber probably least harmful three boron wire far hazardous handle apparently accentuated fact medical profession seems unprepared yet remedy minor incidents Whereas safety should foremost selection other prod ucts modeling applications knowing own personal ability utilize also very important Personally now tend avoid using CyA whenever possi ble since sinuses just will tolerate tiniest whiff fumes no means suggestion model industry should begin Ban the-Boron campaign anything like proper precautions should exercised until become accus tomed its use can remember con cerned mother tackled first l0 Comet kit Dads single-edged razor bladesand times have cut fingers since alone have probably kept Johnson & Johnson business years also did realize really high could have gotten banana-oil nitrate-dope fumes stuck nose jar longer periods time until Uncle Sam stepped fixed fumes problem well products much good modeling use Have ever sat straight pin before Wow getting fingers whacked prop engine back firedBoy smarts seemed years before chicken sticks electric starters became commonplace on. What indicates hereto fore have eventually learned heed proper safety precautions learning personal experiences experiences fellow modelers Maybe slow learners times seem eventually learn cope find corrective solutions comes down could simply wrap ourselves cotton avoid using carbon fiber boron wire cyanoacrylate etc obviously substitute materials would some degree sacrifice perform just well Unfortunately tends squelch progress would theme things American Way con tinually searching better mousetrap safety-related area ever seems gathering consider able concern Free Flighters problem flying prop blades accompanying photo taken Gor don Smiley aftereffects Bill Davis accident occurred last fall mute testimony problem seems Bill dusted off old model taken club test-flying site nonreinforced nylon prop securely tightened down ST G21/29 about 10 years parted suddenly engine being started chicken stick resultant damage obvious photo plastics notch-sensitive especially subjected long periods extreme pressure good prac tice loosen prop nut engines terminating days flying particularly if storing model away Continued page 145 July1985 57 Meredith Chamberlain rubbed lots yeast Dixielander plans come up huge 65-powered version launch produces huge quantities wind noise undivided attention Bill Dunlops K&B 35cc-powered WItchhawk looks perfectly normal outside Inside High-tech goodies make extrastrong lots lighter info text classic expressions taken Schlichting Boundary Layer Theory McGraw Hill quick-and-dirty rule-of-thumb Jumbo Scale try following really clean go 5 average drag go 4 fairly draggy outsize fliselage cross section lots struts go 3 Rubber R maximum length rubber motor can effectively stored used bunching balance problems about three times distance prop hook center gravity CG Rubber weighs roughly 2gm per lineal foot -in FAI 16gm per foot -in Sig flying all-out perform ance event turns approaching max used ratherthan assumed 75% contained program can alter formula reflect increased energy level Duration directly proportional stored energy store 10% energy given weight rubber specffied program will extend duration 10% future go Will computer-assisted design wipe out turkeys leaving nothing eagles sky will computer prove monster destroying fun aspect mod eling reducing game bunch number crunching Its too early tell few programs have available today wont really change game time can expect programs everything prop design rib spacing As computer assumes every-growing role some whittler types may throw down razor blades leave Others will face reality study computing Yes difficult life-style deci tions will have made us concerning computer think married hacker Address questions and/or bitter zomplaints either Leon Bennett mod ler and/or Rachelle Bennett hacker 6 Rivercrest Rd Bronx NY 10471 replies please include SASE FF Duration/Murphy Continued page 57 length time As engine rpms increase dangers multiply some clubs have already taken strides endorse outlawing use wood props non-reinforced plastic props high-performance engines continuous-filament fiber glass/epoxy resin concepts appear put up best defense preventing associat ed mishaps Carbon fiber fiberglassreinforced plastic props obviously quite expensive since produced cottage industry present relatively inexpensive com pared price someones eye worse sooner commercially svailable reinforced concepts hit marSignal Guard blocks random noise off-frequency signals can cause loss control air land RO models Signal Guard responds sig nals its own precisely tuned fre quency ignoring static noise craft itself Plus additional amplification allows control operators visual limit want spend time flying less time money repairing crashed model Signal Guard answer Call toll-free 1-800-468-8215 order Signal Guard TM major credit card send $9795 check money order TTBT~ II u ox 30179 Portland OR 97230 Oregon call collect 503-257-0912 90 day warranty cted dealerships available ketplace safer flying field will new ultra-high-rpm ducted fan powerplants already beginning replace traditional Schneurle main stays thus causing greater safety concerns Appropriately-reinforced epoxy propellers definite requirement engines Maybe will need mal approval procedure prop manu facturers before long similar Underwriters Laboratories service electrical industry rate begin police problem ourselves could very possibly receive consider able amount unsolicited outside aid matter does old adage go An ounce prevention worth pound cure Anyway may wish discuss matter future meeting flying club O&R diary Tim Daniels February issue fine publication Engine Collec torsJournal lists complete index whole Ohlsson Rice lineup engine products very first Ohlsson Mini ature 56 1937 final 049 effort around 1956 complete over 80 pictures associated descriptions different engine versions concepts such famous sideport 23s 60s later front-rotary-valve ver sions post-ignition series glow plug engines Tim credits Ted Enticknap provid ing majority index material July1985145 CLEVELAND GIANTSI NEW FOR GIAMTSALE BUFFS WarMs Largest Gas Plans Assaitme RNATIONALLY FAMOUS CD OUAILTE MASTER MODELS PLANS 54SDDenoinelle 21 Sd 70Connol Cot PEYSA $42 72Cor 0201/4 L&S $46 104 Con Cot PEYSA $56 62 Ronnord Bone Ike $42 96 Wright-Nonytone $48r- 77 Boeing B17G Fern $35 22 WWrnnl2I Red 1 $36 03 50 8170 Fort $25 77 W-Wnrnl2l Red L $48 6$ Dons 046A 06 $32 84 Fobber D7 Ftr 039 108 Sikor S38 Aropir $49 6$ Honnond Pete Ron 032i 60 Roe 100 SpOrt $36 72 Boylen Gee-Bee $32T 90 Boe 100 $901 $49 60 Soperrnorine S6B $24 90 Stinn Lorn Wing 056 89 Soporniorine 068 $32 80 Mortin 74 7dM-I $39 62 Corn Hoonk P-6E $42 7$ ff9ge 2400 Bonrb 542 94 CorHerln P6E Fm DUd 104 89g 0400 Ron $26 62 Loolnfreed V9 $24 60 MCfnino Clipper $55 74 Doolittlen 0-B Il $450 97 MChine Clippen 075 95 Mononeop Sport $36 68 Wentl Wfnirlnniod $32 80 Ho11 Spr Bolidog $43 68 Ryon Nonion $39 107 Aerenno C3 Spi $35 68 BBononno V ToI $29 61 Dooglo 038 Ob $32 77 Lonoonnbn Sedon $25 122 Deoglon 0-3rOb $49 73 N M rnlr Sonib $49 94 Fogen Cort Boner $45 65 MMo node B 26 $49 71 Mortin $10 Bonrb $39 8109 Monqo Rb $42 7g Tornern WW Ron 055 10009 Monqo Bomb $55 R S3 Coo 0ohk 91 1C2 $42 96 Sneo PTl7Koydet $56 r Oonhk F11C2 05499 NBOo Wdooo 901 $69 O6De8enCenretRoo534 71Doog DC3ton $22 * oonMrMollignn 035 95 200$ DC 3 T en 055 94 onnMr Molligon 545 06 Hninlnn Tenoco 13 $32 63 Boeing P26A FIr $36 108 Co 0251 4 t&S 05684 Boeing P-26A 9rr 04R 60 Doing M 2 824 69 Wooo C6 Cobin $36 68 $r ntn Bolldog Ft $30 64 Seech C17B Slog 038 29 BronortoneMnt $54 enIr C17B Stog 049 127 Oroirn teeron 909 $54 nob II Ileorro $30 73 Tronel 0000 $24 85 Look 11 Olentro 040 107 Met MO Ron $44 62 Stinnon T W SR7 016 01 Lindlne Sn tAO 311 $39 81 Stinnon TW 5R7 524 lOg Fo di PT1O T $29 122 Utinnon T W 097 038 90 Wono Toper Wiog $39 ristol FIr F2B $30 75 WentI d Lynonder $32 78 Brintol Ftr 92-B $32 100 Wont1 d Lynonder 049 118 Brintol Fe 92-B $4957 Fond Tnjnntr 4-AT$28__ 74 T-L Penno Spen 045776 Fond Trintr 4AT$45 63 Skyronbet 09591 $20114 Ford Trjntr 4-AT059 * 56 Cor Werfrb 9-40 02484 Berl-Joyoe TFJ-2$06 78 Lonk Liglrtng pg 02893 Loening C-2Arnplr$69 56 Rep Sen-Bee Ann 07458 GronnJ2-F Donk$39 74 BepSee-8 Ann9b $3978 Oronn12F Donk$56 106 Piper J-3 Cob 039 59 Gone GIV Born022 98 Look Hodnon Enib 838117 Gotfro O1V Bonn039 63 Gron 969 Helloot 02868 Brine-Winkle Bird$45 90 09 02 Tine Moth 039- 54 Cort Sonift 0993402gNot Sold Thro DeolernPrinennobjeot torhonge Anne Pence iwemcoenOrineOeenrnecminSnrt-00-Oner 1200 Otlrern 6 -3 Pottn 50oUp Add lOlL nil orders nhip9ing & inn oreto USA Con & Meo Elneonhere its 15% 25% nirl Pinteriol notnIog 0200 lienloden Prioe Lintl Pnine lint B nenrion eloire $100 nir foreign odd 0100 CLEVELAND MODEL& SUPPLY Co 18387K DRIROIT AVB CLEVELAND OHIO 44182 ytioinSerootO 5Oso 0 0 tO nn ONLY $5995 special issue have heard name before Yep guessed designer famous GOOLs talk 1949 Olathe Nats certainly elaborate accounting Ohisson engine series have ever seen under cover reference libraries Ohlsson lov er would complete copy mailing address Tim Dannel PO Box 15162n Lakewood CO 80215 believe $150 will get back issue Also additional $750 will place mailing list next six issues Money well spent good cause Four-cycle Free Flight Since began session discussion new entry-level Gas event possibility maybe also good spot launch con siderably different pigeon before close door months column thought-starter being possibility Free Flight Gas Endurance event powered neat little four bangers Past critics modern competition Free Flight bless hearts have often stated primary reason whats wrong Free Flight Gas being headlong competitiveness what needed some less-competitive events knowsome fun events such stage RC Fun Flies course therein lies insinuation competition Free Flight isnt fun counters reminding said critics about little-publicized fact RC Fun Fliers also award blasphemous trophies winners etc However shall bite lip point move right along subject hand. may should room laid-back Gas event certainly pushrod-powerplant option offers some very interesting aspects Considering engine equivalent rule formula currently use RC SAM contingent conventional engines given 40% displacement handicap direct competi tion four-cycle cousins would mean 15 two-cycle engine could replaced 21 cubic inch fourcycle 3512 4514 40/2 60/4 etc would concede probability would very romantic hang four-cycle engine business end Satellite Shocer other modern Free Flight design different type model seems likely What might guidelines such model match up engines yet correspond concept fun eventor Slow Free Flight event will Well some additional thoughts come mind resultant pleasant low-keyed sound operation engines certainly lend themselves scalelike concepts antique cabin models Thirties thereby suggesting similar configuration ROG launches slower climb-outs etc Another tempting plus potential flying gas jobs small fields much longer engine runs rather ing condemned seemingly short engine bursts currently situa tion present standard Gas events However since have always re tained personal hangup sup posed purpose RC Old-Timers much advertised opportunity fly OT Free Flight models small fields ismore clinically speakingan RC Endurance event being hidden behind mask Old-Timer movement cer tainly would venture suggest simply dump out radio gear permit new four-cycle engines SAIvI Free Flight events No offense intended OT followers aret should think new event sort affords opportunity break away regulated list approved designs OT era What might fit total purpose concept think should credited Californian Bob Oslan Bob has often made reference what calls Old Ruler event long model meets old AMA rules 1941 modeler free design build compete concept meets such parameters Basically rules clude minimum power loading 80 ounces per cubic inch engine displace ment minimum wing loading eight ounces per square foot projected area ROG requirement fuselage minimum cross-section L2/l00 L length fuselage tip prop shaft end fuselage thereby affording enough fuselage cross-section suggest beammounted cowled engines other romantic design configurations rate combo four-cycle engines model-design controls resem bling Old Ruler concept certainly thought-provoker say least Well whadayathink gang Eh What name lake Okay promise never bring subject up again See ya downwind Harry Murphy 3824 Oakwood Blvd. Anderson IN 46011 FF Old-Timers/Haught Continued page 58 Need parts Woody Bartelt Roy Johnson dba Micro Model Engineering Kirsch Municipal Airport 1301 West Lafayette Sturgis MI 49091 have just released new catalog Listed hard-to-find items such point assem blies spinners fuel tanks other parts long list ignition engines includ ing Arden Anderson Atom Atwood Baby Cyclone Bantam Bullet etc selfaddressed envelope dollar will get list purchased volumes two SAM 35 Yearbook will 146 Model Aviation DELTA PRIDE 60 SPECIFICATIONS Wing Span 58 Inches Wing Chord 14 Inches Power 60 Engine Radio 4 Channels KIT INCLUDES Full size rolled plans Easy-to-follow instructions Machine cut sanded parts Necessary hardware OLD Rt 1 Box 190 a MS 38754 Telephone 601 247-3578