MORE FOLLOW-UP Februaiy 1988 col umn picture prop made carbon fiber prop shaft lost informa don its designer/maker Ultimately Keith Fulmer claimed prop design showed other such prop experimental-design Bostonian using carbon-fiber pusher prop Further clarification model Planarian September 1987 MA Barnaby Wajnfan Keiths contribution lies making experimental modifications design Barnaby says model picture appears Keith did far better job building model did original Keiths carbon fiber prop neat idea New newsletterPart H Flyoff announced August column edited Bob Hatschek now off running second issue hand shows two major changes less introduc tory material allow FF coverage shift less expensive paper case paper change upsets subscriber Bob has offered refund money Actually publication continues will changes appearance because first two issues done professional equip ment greater cost Production will shifted desktop publishing software running MacIn tosh computer will allow Bob tailor style versus cost necessary Meanwhile quality content will doubtless improve over already high level Speaking content Bob soliciting technical articles upcoming issues Potential authors should use following guidelines Typed double-spaced about 64 characters maxi mum per line computer word-processing nor mal printer output also acceptable drawings may ink pencil good computer graphics neat workmanlike usable preferably 7 x 10-in format absolute maximum size 11 x 17 Jim Jones cork prop block 1 Rectangular blade blank 15 deg setup angle N Total blade.. twist angle Heres calculate twist prop blank its set up cylindrical form such Jim Jones cork-faced prop block Include necessary dimensions accu rate scale Black-and-white photos preferred near future material submitted MacIntush disks will acceptable shortly after will possible submit articles mo dem Flyoff published quarterly $2 per issue US $3 per issue foreign subscribers minimum subscription five issues Payment must made US funds drawn US bank payable Brooklyn Sky-Scrapers Send correspondence Flyoff Robert Hatachek 316 Grosvenor Street Douglaston NY 11363 gallon-jug props promised re port analysis behind spreadsheet tem plate offered August column plan ning study decided sidestep compli cations caused blade shape assumed rectangular blade shape would used Figure 1 shows rectangular blade blank atop cork form available Jim Jones aligned 150 layout angle marked form end view two lines representing ra ICD B n 0 an B/E geometric trigonometric relation ships prop block Theres lot formation column dii form intersect layout line either end blade blank Perpendicular radii tangent lines represent gle blade either end angle between two tangents represents tutal amount twist blade blank after has formed calculationa based geometry block Figure 2 shows fundamental mulas used calculations Note no allow ance has made curved surfaces leading slight error spreadsheet template calculates angle layout angles between 50 150 multiContinued page 168 62 Model Aviation Free Flight Indoor Bud Tenny Box 545 Richardson TX 75080 corner Buds Novice Pennyplane box just right amount room store winder torquemeter mounting clamp glue rubber lube Buds original Traveler box L originally conceived minimum-sized box carrying fun-type model supporting equipment out-of-town flying Its 1988 counterpart R holds Novice Pennypiane two props room morn torquemeter bunch goodies corner shown closeup earlier photo See two bitty pieces balsa glued corner box hold onto upright portion Buds rundown stand end result looking like warped Popsicle stick Anyway after much perusing con cept shot off note inquiry Brainbuster ed itor Abram Van Dover Abram turn sent sampie prop including templateso what see what get have attempted try prop yet should least prove interestingif noisy Thanks again Abram Newsletter spotlight still vi cinity lets affix newsletter spotlight Abrams paper doll Brainbuster Newslet ter speaks Brainbuster Free Flight Club Hampton Roads VA area Editor Abram also drawing double duty 88 since serves club president taking over Hewitt Phillips positioned helm previous eight years VP Ed Sulli van new secretary Joe Boyle clubs interests seem run through whole book Indoor Outdoor thing Free Flight newsletter once-permonth publication well worth $7/year fee Should reside area wish con tact clubor simply wish subscribe fine newslettercontact Reid Hull 65 Cavalier Rd Hampton VA 23669 Tell em Duration sent Thermal poles Rick Pangell advises has limited supply great 21-ft collapsible thermal-streamer poles available once again price $30 plus $350 UPS delivery mailing address sorry cant deliver PO boxes Send yours RGOA Thermal Poles 936 Hamal Dr Littleton CO 80124 Broken promise last column said would continue time Part II See ya downwind FF Indoor/Tenny Continued page 62 plies two get twist whole blade what part template calculates tables shown previous col umn August 1988 MA Constants template assume block 78 long irrelevant long blade segment shorter assumed block radius corresponds Jones block 31 block form use different change constants formulas Also con stants assume 5-in blade segment 12-in prop diameter specify layout angle setup angle setup radius spreadsheet makes calculations Another analysis tool access spread sheet limited office wanted detailed analysis BASIC program computer home prompts block layout gle setup angle setup radius calcu lates pitch Novice Pennyplane prop stations inch apart prop radius 1 6 radius approach gives de tailed analysis spreadsheet about same response time Chart 1 shows sample printout 150 layout angle 25-in setup ra dius 450 setup angle CHART 1 12 3 4 5 6 15/25/45 77176 204 220 227 225 BASIC program contains constants Jones block form allows entry data other blocks prompted block layout angle blade setup angle setup radius After line data printed can enter succes sive values setup radius change block layout angle setup angle continue get BASIC program spreadsheet template either send $1 business-sized SASE Bud Tenny Box 545 Richardson TX 75080 Model boxes kinds sizes model transportation boxes Some boxes particular size because what available others specially built fit particular model situation Past comments have dealt pri marily FlD boxes transportation world championshipsbut other needs gituations two boxes shown built corrugated cardboard fit spe cific models fit specific spaces photos shows compact singlemodel transporter built minimum size Traveler idea go-anywhere fun model carried out-of-town flying ses sions wingspan just over 18 about 5-in maximum chord got quite bit area small space canting wing fits way box could shorter span fuselage rotated stab tucks under wing tip thrust bearing low rest lifts up let stab rotate two props will fit bottom between wing fuselage along rundown stand INTRODUCING THE 7EzrzrzDL/rEh FOR 020-035-050 ELECTRICIXI SPAN 36 AREA 297 CHANNELS 2-3 ENGOR 30 FLYING WT ZOTO 30 OZ Designed built Electric Model Co 218 Oyster Ck r Land TX 77478 42-6229 Souths largast inventory astro motors & acceasonee Need heip wIth year eIctdc alpisee wake Ask Deal TMI ny Locktronics ONBOARD NICAD BATTERY TESTER tery Steton RE tooch 0 botton Two EolOr LED indjcetRF Groon f ly PRO fR fly flight nefety Snergin I RTEoFRER en ESV Smell lightweight IROn /o oz CO-PILOT 61595Fesy nToontrng Fogged foRlpFoof KIT 995 WoFks elI 48 volt oystems POSTPAID 1 TIRRF GoeFentee Mich en odd 4% tooKit eREloded deeleF OF IORDER money order TODAY go0 g5g%gMich 48185 168 Model Aviation zyfotjuuici B Othw ARF ndh~t ox air gmdeb avoid Zeek Chronicles aint going simple reason have about used up space allotment issue Howsomever will certainly next time Till Instantly removable tricycle gear wheels Pre-built boom landing gear sockets ft push-rods Astro motor mount cobalt adapter Pre-formad leading edgee knotched trailing edges Air frame 6 oz 75 oz landing gear Perfect performance 020035-35 systems Maximum duration ft glider-like motoroff flight characteristics ARF build ft cover wing else completely built tall surfaces hinged . *79K wlc gear *8695 gear ladd $3 shipping TX res add 6% sales tool __The Zi NAfamous lIne hobby saws Razor #200 Universal #500 Replacement Blades available dealer FAI Model Supply P0 Box 3957 Torrance CA 60510 Another photos shows similar ap proach new Novice Pennyplane dif ference box alone intended carry everything needed fly model except repair tools contains model two props room torquemeter winder rub ber scale weigh rubber rubber chart rpm chart clamp mount torquemeter rubber lube glue third photo shows close-up boxs cor ner compartment holds extra stuff winder wedged place using cardboard web notch align output shaft other side web open space holds clamp torquemeter glue lube rubber stored plas tic bag top stuff assuring shifts Referring back second photo left side box behind torquemeter wall pocket holds rubber scale rpm chart rubber chart Another point common between first two photos provision holding rundown stand illustrated fourth photo rundown stand model place first photo rundown stand stored between fu selage top edge picture run down stand made 4-in stock two short pieces 4-in stock glued box cor ner make solid mount rundown stand future columns will detail construction type box explain alternatives USFFC/Oldenkamp Continued page 66 curve respects better-built Rub ber ships 1988 totally overshadow decade ago fliers ex hibit near-genius managing systems survive competition nowa days Rubber pilots have able max out duel hordes re salting flyoffs power During spells flying aborted weather demons chance circulate amongst crowd forage tidbits information hot topic recent FAI decision eliminate Builder Model rule future International Free Flight contests did some preliminary speculating subject July Model Aviation Free Flight Duration column Now rule fact abrogated might anticipate deluge ready-made ARFS overseas popular catego ries like Wakefield Power Nordics etc However majority current crop competitors say wont happen predictably prefer build own Bob Whites insight issue goes somewhat further notes drove ARFs should descend us abroad buyers might inspired go de sign build own models Thus ARF kits could have salutary effect modelers building programs Bob did say however disappointed FM ruling Others like Bob Piser chio sticking private research development goals time being pos sibly skunk works mode see comes up what Sal Fruciano unnamed friend have leg up expanding US market Rohacell nonporous foam material has come fore Europe over past five years shows great promise future Used support Kevlar glass carbon fiber produces strong light weight flying surfaces As outgrowth new rules can expect rapid changes materials nothing else will spur increased cottage industry activity bringing progress good cheer Air Olympics proposed FM becomes reality prospective competitors will need new technology can get hands socializing included long talk Don Munn Heres man remark able almost obsessive passion craft ever dedicated aeromodeler guy San Diego computer pro grammer works 40-hour weeks like rest us over last 48 months Don built no less 250 airplanes spare time probably lost machinery USFFC us create year two Don must come close setting alltime record perseverance Ripley mate rial Don returned modeling main stream 1984 after usual hiatus focusing school girls marriage jumped vengeance indefati gable builder actually turned out 80 Peanut Scale models before flying single advanced larger Scale OT Rubber subjects lately has concentrating Gas Dons recent projects build Sal Taibi designs have survived Golden Era list projects completed past four weeks beggars language Don built finished test flew two full-sized Texaco ships Australian Finnerans Flyer Comet Clippernot mention Jetex Wedgie 020 replica Canadian Jimmy Allen Dons energy carries over flying field also finds greatest joy off long foot chase trying retrieve stuff Thermal folks No question about Don Munn legend malting Jimmy Allen Air Races Hoax hap piness USFFC Don participated Mass Launch always Jimmy Allen Air Races feature ornery little JA crates fly extremely well theres story Back mid-Thirties certain oil com panies kit makers began sponsoring events offered some pretty slick prizes An airplane ride weekend Philadelphia New York instance several hundred bucks cash seems like awl people still have plenty today get swag build design designated laborintensive aerodynamically suspect mod els 18 years old less cannot imagine having completed myself ageContinued page 170 LMA Name Street Address City StateZip HOBBY BB INTERNATIONAL INC October 1988 169
