Radio Control Soaring Byron Blakeslee Germany compete Big world championships Its going tough competition Europeans formidable F3B anyway will home turf West Germans have very strong team plus cur rent World Champ RoIf Decker Countries com peting will include Argentina Australia Bel gium Canada China Denmark Finland France East Germany Great Britain Hungary Israel Japan Netherlands New Zealand Norway Poland Spain Sweden Switzerland USA West Germany Last month talked about teams budget need spend amount money order have chance doing well maybe win ning Osnabruck Well time growing short still have some funds raise want guys concentrating contestnot worrying theres enough funding So havent sent team patch pin please sit down write check $15 both itemsor $10 patchor $5 pin alone address US F3B Soaring Team PO Box 9328 Albuquerque NM 87119 Dont forget contribution will also get entered sweepstakes lots great mer chandise prizes big prize $15 donation round trip airline ticket Germany has firmed up write March 30 contingent airline donating ticket now its still negotiations However merchandise list continues grow now cludes Airtronics Top Flite Bob Martin ACE RIC Carl Goldberg Midwest Sky High R/C MAN Six Championship radios six Andante kits Six Antares kits 36 rolls MonoKote Three Bob Cat kits 10 Talon kits three Pussycat kits Hobie Hawk 1FF charge system Six Gentle Lady kits Lazybird kit Airborne Thermal Detec tor Three subscriptions closing F3B team report team would like share part letter sent Mrs Patricia Pruss may never change world sportsmanship friendship might make difference Slope sites find fol lowing letter written Barry Kurath Portland PASS Club telling clubs experi ences Sloping last winter may typical thought youd enjoy reading what people will get some good flying got tired reading about great Slope flying Torrey Pines England Alps etc PASS got busy found some local sites must rival best Ill talk about MeKinly Ridge now some others other time McKinley Ridge runs north south about 3900 ft Gifford Pinchot National Forest Cascade Mountains prevailing winds east west almost always good lift air rises some 2500 ft flows over ridge either direction Ten us braved mean braved snow-covered logging road day glorious flying summer plan combine camp-out pylon race fun-fly slope Its bit over hour Portland combines great flying rea sonable access Thanks info photos Barry Im sure everyone looking pictures will feel bit cooler husband two bequests willthings truly believed first SOAR second F3B team wish best Dans name Ill say Winning Southern California Scale Sloping Bill Liscomb 48 Model Aviation F-I 6-Inspired Power Scale Slope Soarer Advanced GliderConcepts PSS very popular Europe now catching about model column Bill Llscomb sentthese photos two big Scale ships atTorrey PInes CA AS-W 24L istrom German Roebers kitwith glassfuselage obechi-sheeted 4-meterfoam wings Weight is91/2 lb photo AS-K 21R interesting shows dew hasformed wings during flightnone forward part chord airflow laminar German Rodel kit Span 42 meters Gryphon making pass along Oregons McKinley Ridge slope Thats 12307-ft Mt Adams background What well-dressed Slope flier wears Cascade Mountains December People areLtoR EricJackson Allan Halieck Barry Kurath whotook photos Carshad CA sent some pictures latest -scale birds writes much laminar flow get -scale Glider Check out side view wing AS-K 21 photo taken im mediately after landing conditions Torrey Pines day such clouds about 100 ft over top cliff K 21 spent about half its one-hour flight ducking out clouds Upon landing noticed con densation moisture dew wing stabexcept forward 15% Glad camera answer question build -scale ships usually put 20 40 hours per week building Because amount work already done German kits takes about same amount time build -scale beauties does build say Sagitta 600probably less latest project -scale 1890 Chanute biplane hang glider Max speed appears about 20 mph Photos follow Continued page 148 Connectors Designed anything electrical requiring quick disconnects Ideal Power Pack Connector tar electric planes cars boats Designed high vibration environment Cycled ten Thousand times electrical failure O Anderson Power Products Inc uu D50 CRISES SORRY NO PERSONAL CHECKS OR COD ORDERS Only certified checks money orders accepted Minimum arderSl000 forttiree packages 4 Powerpoles $300 per package plus $100 ship ping handling CT residents add 75% sales tax Prices subject change notice Dealer inquiries invited further information dealer prices send SASE Bus Card SERMOS RIC SNAP CONNECTORS Cedar Corners Station Box 16787 Stamford CT 06905 MINI-STRIPSPRECISION DIE-CUT Medium Garnet SAVES TIMEREPLACEMENTFine Garnet AND EFFORT $175 SANDING BELTSAssId Water Pruol TEE ALUMINUM EXTRUSION SANDING BLOCK ter RUFF-STUFF Selt-adheslee nand paper Large Tote SerVice Weal Wur Out 11 inch82- Handy Urn 22 Inch $175 BEARERRUFF e STUFF SELF ADHESIVE SHEET SANOMPER MAKE YOUR OWN SPECIAL SANDING SHAPES Eany Us$1 09 Medium Flu r Phi MINIesAw $7 COMPACT 10 inGh HACK SAW SAWS ANYTHING ANYWHERE Saw hat ragged din-cast traine cemlertahin chlp-preet pinstic Inneat handin Receding ewe ad pantahin B hinds gin accena Cute weed pinstic metal HARDENED MUSIC WIRE extra htndns3/$199 Add 20% postage Send 25 castilog Dealers & Distributors Welcomed Phone 703 273-9593 FLYLINE MODELS INC PO Roe 213A Fuirfo, Vrr5EnLo 22t31 us July1987 49 Mike Bamberg launches Gryphon flying wing directly far-off Mt Hood elevation 11235 ft Oregon buddies doing some winter Slope Soaring Ly APPLIED DESIGN CORPORATION 738 hon SI El Senunde CA 90245 SANDER madSTABLU HA RE DEE V Padded Rate curves Handy Held EasyteUse$255 Remember Folding INTERCEPTOR Ready Fly $795 U-butld Ktt$495 AIRCRAFT CC 1PANY RO Box 68132 Portland OR 97268 Classic R/CScaLAKES THE 40 Wing 15 25 Engines Phnn 206 77680671 IGLIDER VIDEO TAPES WIND SONG unchallenged open class thermal competition champion NOW 2 CONSTRUCTION VIDEO TAPES ARE AVAILABLE help insure properly construct advanced composite multichannel perfbrmance champion tapes also apply National Champion 2-meter Pixy amazing standard class Camano aid construction tiny wingeron Pivot Tape 12 105 minutes long shows foam/balsa wing construction Tape 13 64 minutes long deals fuselage construction radio installation final fit finish Tape 11 new 1987 promotional video tape shows glider kits spectacular action includes what probably the beautiful breathtaking RIG glider flying fbotage available anywhere including Windsong climbing out handlaunches Bob Dodgson shares some design philosophy made Windsong significant thermal competition glider design time 1 tape$15 deposit S/H total keep tape 2 tapes $30 deposit S/H total keep tapes 3 tapes $40 deposit S/H total keep tapes Send 2 stamps catalog WIN OSONG CAMANO 2-Meter PIXY new PIVOT PLUS NEW VIDEO TAPES specify VHS BETA 8mm format VISA & MASTER CHARGE Ok Windsong 19995 DODGSON DESIGNS Camano 15995 Pixy 14995 21230 DAMSON ROAD BOTHELL WA AC Soaring/Blakestee Continued page 49 Bill included some additional info latest projects said got AS-K 21 Harry Brooks Models England AS-W 24 Silent Flightalso England Air freight runs about $100 per kit Robers AS-W 24 very fast clean Robers also makes Discus DG-202 kitsvery high quality Robel AS-K 21 very docile very pretty air Also no problem fitting radio Power Scale Soanmg getting more popular idea build Scale Glider out jet piston-powered prototype fly slope F-16 photo Advanced Gli der Concepts PO Box 1019 Manhattan Beach CA 90266 has extra-long fiberglass fuselage wings made blue foam covered As-in plywood span 42 weighs 26 oz needs two-channel radio assembly said easy Available Welshire Hob bies $120 wnte AGC Fly 205 Larry Jolly letters readers most-requested information straight scoop flying Soaring experts Larry Jolly yes MAs Helicopter columnist eminently qualified advise us Soaring having won Nats several times well other major contests following first half article Larry wrote Pacific Soaring Association newsletter has reprinted other club newsletters because such significant piece Larry specifically discusses Eppler 205 airfoil because uses several planes kits-most notably 128-in-span Meteor 100-in Pantera though has 205 mind much what says applies just about Sailplane/airfoil combination second half will next months column Take away Larry Back 1978 Woody Blanchard received copy Dr Epplers then-new Eppler 205 air foil Woody good enough send copy coordinates friend Lee Renaud Shortly thereafter Sagitta born What signif icant about Sagitta first US kit designed emphasize moderate wing load ing high L/D ship did compete F3B well primarily designed AMA Duration model People soon realized advantage 205 gave gave flier ability cover lot ground thereby giving better chance encountering lift still yielding moderate sink rate Once lift encountered 205 responded well better flat-bottom section climbing up away altitude reached nose could dropped model would soon come step zoom across sky roses however 205 has rather peaky performance chart means airfoil performance degrades rapidly once angle attack exceeds relatively small angle either positive negative simple terms ability model equipped 205 cover ground greatly affected method pilot flies elevator flying planning fly model equipped 205 airfoil definite technique involved getting performance out Believe technique starts workshop definition Eppler 205 moderately thin medium-camber laminar-flow section Laminarflow sections designed have air passing over stay attached farther aft wing surface turbulated section get maxi mum performance wing must built true possible sharpen leading edge ra dius attempt go faster causes 205 stall lower angle attack would normally occur Some method glide-path control must included Since AMA Sailplane contests won ground must plan install some method adjust glide path model Spoilers flaps dive brakes commonly used methods adjust glide slope have used above have found have relative merits spoilers commonly used mastered give reproducible results Next just important make sure center-of-gravity proper location general thermal flying have found centerof-gravity position 38% aft leading edge yields beneficial results Now before model ever leaves shop should have smoothest wing possible working glide-path control center-of-gravity must proper location Before close workshop door almost forgot tell single greatest factor affecting stalling speed 205-equipped aircraft will wing loading means can either add wing heavy model find method remove some lead nose building finishing Sailplane pay careful attention tail surfaces Build strong also keep light pos sible Pay careful attention paint primer fuselage aft wing trailing edge Two ounces weight tail good six ounces nose yields net gain eight ounces overall increase oz per sq ft 900-sq-in model whole lot might say believe trying make early-morning landing benefit headwind makes difference much real estate youll cover Next check tailplane has 25 positive deflection reference wings center lineThis should neutral stick elevator trim level position Now off flying field master nasty old 205 Assemble model check proper radio operation essential smooth flight control surfaces return center deflected released always prefer hand-glide capable hand-launching model reasonable results its perfectly acceptable put up line immediately Regardless Im going assume hand-gliding yielded respectable flat glide out need trimming tailplane Now know thing going fly lets think about what going look first winch-launch Once off line point model wind remove thumb stick model should glide nice flat showing signs climbing diving acceler ating model behaving make 180 turn let model commence downwind models ground speed should increase may give illusion dropping nose slightly model docs show tendencies adjust elevator trim lever until settles down Note trim lever should adjusted click time should take much angular deflection tailplane create noticeable difference glide angle hope still have plenty altitude left land relaunch have safe altitude maneuver aircraft its flight path per pendicular field vision will best enable observe angle attack aircraft whilst glide model positioned flying normal cruising speed proceed gently bring nose up applying Up elevator Keep slowing model until stalls Note Up elevator gently applied aircraft should stall abruptly Ideally air craft should first begin climb slow begin mush tail down losing altitude just little tailplane deflection ward motion should halt nose should drop stall encountered aircraft exhibits tendencies should aircraft exhibits vicious tendencies try adding bit nose weight temporarily should dampen pitching acceptable limits weight helps fix nose permanently Now will know what expect land aircraft good landings start good 148 Model Aviation Pivot Plus 7500 980213 approach end aircraft flared stall no lift encountered during first flight set up normal landing approach leaving yourself plenty room final dont hit obstacle model overshoots lift encountered proceed characteristics 205 different conventional flat-bottomed airfoil way behaves thermal tum lift great will able notice much difference model will sky Out basis wing loading instead aerodynamics What Im looking early-moming late-evening ther mals would just soon leave take up Anyway remember way 205 re sponded eased elevator stick aft Re member fine line between slow flight mushing stall degrading glide Think back contests youve seen two models enter low thermal model skies out other falls out Often model fell out pilot attempting maximize climb weak thermal tried harder succeeded placing 205 backside its glide curve caused model mush out thermal Because fine line prefer fly thermal elevator trim lift encountered am ready start circle commence turn click two three clicks Up trim Im sure can probably fly model up through thermal find easier adjust aircraft fine line use rudder kill stall adjusting aircrafts airspeed through opening tightening circle Try believe will find better climb rate what would get attempting fly 205 up thermal continued Just add couple comments what Larry said installment Make sure wings outer panels have little washout built check hold tip panels against big mirror piece plate glass trailing edge tip should e glass little bit wing twist will prevent tip stalling allow plane stall straight aheadnot drop wing abruptly practice stalling Larry described last thing want hap pen during slow stall-type landing have wing drop suddenly hit ground usually produces cartwheel something gets broken Through trial error also found 38% CG location Meteor best Any farther back plane difficult control pitch ie tends stall 38% position plane still quite sensitive pitch tiny adjustments stabilator trim make noticeable difference glide angle Unfortunately transmitter does have click stops trims So get stab adjusted what like think best cruise position Im reluctant move stab trim lever because know will difficult find again goes launching landing thermaling Ive tried pulling some Up trim like Larry does works fine prefer maintain ing sweet spot stab setting using elevator thermals Expanded scale voltmeter problems Feb ruary column discussed using ESVM check state charge transmitter airborne Ni-Cd battery packs Wayne Lehman Lan caster PA wrote after reading column recently purchased ESVM finally peace mind about airborne pack advice local hobby dealer cycled Ni-Cds plugging ESVM As late checked progress first hour went bed understood no harm doing fact said good drain recharge now morning recharged pack evening surprise ESVM needle deflected opposite direction Strange thought meter should suddenly go bad checked controls model everything seemed normal fact Ive flying pack Disturbed about condition ESVM related story hobby dealer No never heard anything like packed up meter sent back manufacturer checked said waa okay read column can imagine perked up read start stopwatch plug ESVM stand cou ple hours watching meter go down because essential let pack discharge below 44 volts cell reversal other bad things can happen couldnt anyone have told cell reversal bad What other bad things way re-reverse Ni Cds First lets analyze Waynes ESYM jumped opposite ie downscale direc tion ESVMs special-application instruments designed read about 43 53 volts airborne packs 86 103 volts transmit ters Just regular voltmeter will go off scale right too much voltage put ESVM will go off scale left too little voltage put ESVM trying read least 43 volts 36 volts left downscale far concerned What must have happened Wayne cells pack either went dead reversed left plugged ESVM So after full recharge pack putting out about 36 volts instead nominal 48 1 2 volts per cell say nominal because freshly-charged Ni-Cd cell will measure 125 volts will rapidly fall 120 volts will stay its useful discharge So since 36 volts below ESVMs rest position needle jumped downscale left Its remarkable Waynes receiver continued work Most wont cell out Now Waynes questions reversed cell actually worse weak dead cell because putting out little voltage wrong direc tion subtracting voltage other cells recharge two will often get cell turned around proper direction Ive heard shocking reversed cell higher-thannormal voltage get turned around have never tried myself Another bad thing happens fullydischarged cells venting internal gasses can lead leakage likelihood shortened cell life among us has inadvertently left receiver transmitter switch few days Usually pack will come back charging normallybut bad thing because danger decreasing cell life Sometimes Waynes case cell refuses cooperate thing replace figure Ni-Cds minor cost hobby Id rather buy new ones take chance demolishing plane Jeff Troy Event Director Soaring 1985 86 Nats now AMAs Assis tant Director Public Relations Jeff builds beau tiful Scale Sailplanes sent tip will interest other Scale builders Jeff writes ~n56 Engine 35-45 501.z213AIpha 15 $4995 Span 46 Engine 23-25W 34 Channels 50K220Super Pacer $4295 %A ll July1987 149 I, Span 4O/4123C Engine 049-05150L2034C e High MKII $3195 -120 $149 5,d $200 ou conpit catalog ACE tan, ar available deals oda diaot add $200 Handling Faa 116Wl9thSt I11Vfl Winninocuill, MA BUMBLE VEE FLYING FUN 2 super little sport plane Bumble Vee designed 05 electric power Fast building different looking great flying Bumble Vee pure fun fl PROIUCTS INC 714 592-5144 510 E Arrow Highway San Dimas CA 91773 organization called Vintage Sailplane Association dedicated preservation flying antique Gliders national publication called Bungee Cord VSA really good source documentation vin tage Sailplanes have first-class archivist person Mr Lee Buell 13507 Brightfield Lane Hemdon VA 22071 Data available VSA members also nonmembers Builders should check Lee subjects available prices can tell wealth information hand last can document some strange birds have eager try couldnt find proof-of-scale would urge Scale fans contact Lee Jan Scott Scott Airpark Lovettsville VA 22080 get membership information wonderful orga nization Membership very inexpensive efforts quite genuine As said above membership required have access material what nice way say Thank plus receive Bungee Cord guess would too out character mention passing have signed editor Model Soaring column Bungee Cord Since Bungee Cord full-scale publica tion consider quite honor will try very hard keep interesting What means reach Level V following piece Mike Hickman Pikes Peak Soaring Societys newsletter Randy Randy Reynolds clubs newsletter editor resident hyper person Hope enjoy did quite some time now Randy has after write article club newsletter about what means feels like reach Level V League Silent Flights Sodring Ac complishment Program Ive sat down now several different occasions write task much difficult ever imag ined Its sort like trying talk about close friend has just passed away five years goal reaching Level V seemed control move made Soaring day finally reached goal swallowed left huge vacuum left goal properly place perspective need know something about LSF Program help have included copy also includes summary require ments level take moment study requirements quickly obvious start quite simple tasks progres sively increase difficulty started flying Sailplanes August 81 1 like other newcomers sport could get plane up lucky enough stumble thermal might get 10- 15-minute flight wasnt until flew first contest hooked both competition camaraderie same time humbled little knew about didnt take much see rate going sure wouldnt winning contests make long story short found out about LSF program immediately apparent tool needed program didnt have worry about first goal having to win contests would come later now con centrate requirements Level I just make couple five-minute flights learn land reasonably close spot ground Now wasnt too bad Bring Level II Now landings get touch demanding have start flying contests wait dont seem intimidating now Could possibly due Level landing practice sessions point LSF program allows follow well-thought-out series goals leading ever-improving flying skills goal close enough reasonably dedicated individual should able reach result will will start win will eventually find yourself starting work Level V voucher As have already mentioned once com pleted requirements Level V seemed though loss what should next other activities directed toward completing requirements now sud denly found myself goal What let down Well folks its taken six months now now have new goalF3B also have new enthusiasm knows what may next Lets see now next team selection 7? See field Thanks story Mikea very persuasive testimonial value LSF program deed really no reason Sailplaners should participate League Silent Flight improve flying its fun best its practicallyfree get started send name address also enclose five stamps LSF PO Box 647 Mundelein IL 60060 will get back Level voucher full descrip tion program National Soaring Societys 1987 Soar-In Contests will held around country between June 1 July 26 idea have similar contest clubs roughly same time have fun spread word about NSS Marshall Long Texas taking over Dick Crowley Soar-In Coordinator year time read AMA sanctions should set check Contest Calendar magazine Soar-In closest SOARs Scale Uprising coming up August 1 2 original dates July II 12 switched because near-conflict Nats promises biggest all-Scale Soaring event held country Contest Coor dinator Steve Moskal provided details August 1AMA Sport Scale six classes see AMA rule book August 1-2Thermal Duration six classes Ships must have flown AMA Sport Scale In/out 100-ft-diameter circle 20 landing bonus points Duration will five 10 minutes de pending weatherwith objective seven eight rounds flown two days Straight scoring will used no points Sport Scale Electric-motor Gliders will judged flown same above will no limit motor run number charges Byron Blakeslee 3134 Winnebago Dr Se dalia CO 80135 RC Aerobatics/Van Putte Continued page 51 posal have opinion other rule change proposals get off apathy write district Board member recent contest several us talking Don Lowe about what wed like see way competition among top-level national international group RC Aerobatic Pattern fliers consensus wed have everyone fly same airplane wed prevent judges knowing identity flier Wouldnt great carefully-nurtured halos would worthless everyone would have equal chance win basis flying ability alone possible consider such com petition thought kicked around few ideas about obvious place start airplane must capable performing FAI pattern well hands superior pilots thought Hobby Shack Supra Fly 1 50 Model Aviation
Edition: Model Aviation - 1987/07
Page Numbers: 48, 49, 148, 149, 150
Radio Control Soaring Byron Blakeslee Germany compete Big world championships Its going tough competition Europeans formidable F3B anyway will home turf West Germans have very strong team plus cur rent World Champ RoIf Decker Countries com peting will include Argentina Australia Bel gium Canada China Denmark Finland France East Germany Great Britain Hungary Israel Japan Netherlands New Zealand Norway Poland Spain Sweden Switzerland USA West Germany Last month talked about teams budget need spend amount money order have chance doing well maybe win ning Osnabruck Well time growing short still have some funds raise want guys concentrating contestnot worrying theres enough funding So havent sent team patch pin please sit down write check $15 both itemsor $10 patchor $5 pin alone address US F3B Soaring Team PO Box 9328 Albuquerque NM 87119 Dont forget contribution will also get entered sweepstakes lots great mer chandise prizes big prize $15 donation round trip airline ticket Germany has firmed up write March 30 contingent airline donating ticket now its still negotiations However merchandise list continues grow now cludes Airtronics Top Flite Bob Martin ACE RIC Carl Goldberg Midwest Sky High R/C MAN Six Championship radios six Andante kits Six Antares kits 36 rolls MonoKote Three Bob Cat kits 10 Talon kits three Pussycat kits Hobie Hawk 1FF charge system Six Gentle Lady kits Lazybird kit Airborne Thermal Detec tor Three subscriptions closing F3B team report team would like share part letter sent Mrs Patricia Pruss may never change world sportsmanship friendship might make difference Slope sites find fol lowing letter written Barry Kurath Portland PASS Club telling clubs experi ences Sloping last winter may typical thought youd enjoy reading what people will get some good flying got tired reading about great Slope flying Torrey Pines England Alps etc PASS got busy found some local sites must rival best Ill talk about MeKinly Ridge now some others other time McKinley Ridge runs north south about 3900 ft Gifford Pinchot National Forest Cascade Mountains prevailing winds east west almost always good lift air rises some 2500 ft flows over ridge either direction Ten us braved mean braved snow-covered logging road day glorious flying summer plan combine camp-out pylon race fun-fly slope Its bit over hour Portland combines great flying rea sonable access Thanks info photos Barry Im sure everyone looking pictures will feel bit cooler husband two bequests willthings truly believed first SOAR second F3B team wish best Dans name Ill say Winning Southern California Scale Sloping Bill Liscomb 48 Model Aviation F-I 6-Inspired Power Scale Slope Soarer Advanced GliderConcepts PSS very popular Europe now catching about model column Bill Llscomb sentthese photos two big Scale ships atTorrey PInes CA AS-W 24L istrom German Roebers kitwith glassfuselage obechi-sheeted 4-meterfoam wings Weight is91/2 lb photo AS-K 21R interesting shows dew hasformed wings during flightnone forward part chord airflow laminar German Rodel kit Span 42 meters Gryphon making pass along Oregons McKinley Ridge slope Thats 12307-ft Mt Adams background What well-dressed Slope flier wears Cascade Mountains December People areLtoR EricJackson Allan Halieck Barry Kurath whotook photos Carshad CA sent some pictures latest -scale birds writes much laminar flow get -scale Glider Check out side view wing AS-K 21 photo taken im mediately after landing conditions Torrey Pines day such clouds about 100 ft over top cliff K 21 spent about half its one-hour flight ducking out clouds Upon landing noticed con densation moisture dew wing stabexcept forward 15% Glad camera answer question build -scale ships usually put 20 40 hours per week building Because amount work already done German kits takes about same amount time build -scale beauties does build say Sagitta 600probably less latest project -scale 1890 Chanute biplane hang glider Max speed appears about 20 mph Photos follow Continued page 148 Connectors Designed anything electrical requiring quick disconnects Ideal Power Pack Connector tar electric planes cars boats Designed high vibration environment Cycled ten Thousand times electrical failure O Anderson Power Products Inc uu D50 CRISES SORRY NO PERSONAL CHECKS OR COD ORDERS Only certified checks money orders accepted Minimum arderSl000 forttiree packages 4 Powerpoles $300 per package plus $100 ship ping handling CT residents add 75% sales tax Prices subject change notice Dealer inquiries invited further information dealer prices send SASE Bus Card SERMOS RIC SNAP CONNECTORS Cedar Corners Station Box 16787 Stamford CT 06905 MINI-STRIPSPRECISION DIE-CUT Medium Garnet SAVES TIMEREPLACEMENTFine Garnet AND EFFORT $175 SANDING BELTSAssId Water Pruol TEE ALUMINUM EXTRUSION SANDING BLOCK ter RUFF-STUFF Selt-adheslee nand paper Large Tote SerVice Weal Wur Out 11 inch82- Handy Urn 22 Inch $175 BEARERRUFF e STUFF SELF ADHESIVE SHEET SANOMPER MAKE YOUR OWN SPECIAL SANDING SHAPES Eany Us$1 09 Medium Flu r Phi MINIesAw $7 COMPACT 10 inGh HACK SAW SAWS ANYTHING ANYWHERE Saw hat ragged din-cast traine cemlertahin chlp-preet pinstic Inneat handin Receding ewe ad pantahin B hinds gin accena Cute weed pinstic metal HARDENED MUSIC WIRE extra htndns3/$199 Add 20% postage Send 25 castilog Dealers & Distributors Welcomed Phone 703 273-9593 FLYLINE MODELS INC PO Roe 213A Fuirfo, Vrr5EnLo 22t31 us July1987 49 Mike Bamberg launches Gryphon flying wing directly far-off Mt Hood elevation 11235 ft Oregon buddies doing some winter Slope Soaring Ly APPLIED DESIGN CORPORATION 738 hon SI El Senunde CA 90245 SANDER madSTABLU HA RE DEE V Padded Rate curves Handy Held EasyteUse$255 Remember Folding INTERCEPTOR Ready Fly $795 U-butld Ktt$495 AIRCRAFT CC 1PANY RO Box 68132 Portland OR 97268 Classic R/CScaLAKES THE 40 Wing 15 25 Engines Phnn 206 77680671 IGLIDER VIDEO TAPES WIND SONG unchallenged open class thermal competition champion NOW 2 CONSTRUCTION VIDEO TAPES ARE AVAILABLE help insure properly construct advanced composite multichannel perfbrmance champion tapes also apply National Champion 2-meter Pixy amazing standard class Camano aid construction tiny wingeron Pivot Tape 12 105 minutes long shows foam/balsa wing construction Tape 13 64 minutes long deals fuselage construction radio installation final fit finish Tape 11 new 1987 promotional video tape shows glider kits spectacular action includes what probably the beautiful breathtaking RIG glider flying fbotage available anywhere including Windsong climbing out handlaunches Bob Dodgson shares some design philosophy made Windsong significant thermal competition glider design time 1 tape$15 deposit S/H total keep tape 2 tapes $30 deposit S/H total keep tapes 3 tapes $40 deposit S/H total keep tapes Send 2 stamps catalog WIN OSONG CAMANO 2-Meter PIXY new PIVOT PLUS NEW VIDEO TAPES specify VHS BETA 8mm format VISA & MASTER CHARGE Ok Windsong 19995 DODGSON DESIGNS Camano 15995 Pixy 14995 21230 DAMSON ROAD BOTHELL WA AC Soaring/Blakestee Continued page 49 Bill included some additional info latest projects said got AS-K 21 Harry Brooks Models England AS-W 24 Silent Flightalso England Air freight runs about $100 per kit Robers AS-W 24 very fast clean Robers also makes Discus DG-202 kitsvery high quality Robel AS-K 21 very docile very pretty air Also no problem fitting radio Power Scale Soanmg getting more popular idea build Scale Glider out jet piston-powered prototype fly slope F-16 photo Advanced Gli der Concepts PO Box 1019 Manhattan Beach CA 90266 has extra-long fiberglass fuselage wings made blue foam covered As-in plywood span 42 weighs 26 oz needs two-channel radio assembly said easy Available Welshire Hob bies $120 wnte AGC Fly 205 Larry Jolly letters readers most-requested information straight scoop flying Soaring experts Larry Jolly yes MAs Helicopter columnist eminently qualified advise us Soaring having won Nats several times well other major contests following first half article Larry wrote Pacific Soaring Association newsletter has reprinted other club newsletters because such significant piece Larry specifically discusses Eppler 205 airfoil because uses several planes kits-most notably 128-in-span Meteor 100-in Pantera though has 205 mind much what says applies just about Sailplane/airfoil combination second half will next months column Take away Larry Back 1978 Woody Blanchard received copy Dr Epplers then-new Eppler 205 air foil Woody good enough send copy coordinates friend Lee Renaud Shortly thereafter Sagitta born What signif icant about Sagitta first US kit designed emphasize moderate wing load ing high L/D ship did compete F3B well primarily designed AMA Duration model People soon realized advantage 205 gave gave flier ability cover lot ground thereby giving better chance encountering lift still yielding moderate sink rate Once lift encountered 205 responded well better flat-bottom section climbing up away altitude reached nose could dropped model would soon come step zoom across sky roses however 205 has rather peaky performance chart means airfoil performance degrades rapidly once angle attack exceeds relatively small angle either positive negative simple terms ability model equipped 205 cover ground greatly affected method pilot flies elevator flying planning fly model equipped 205 airfoil definite technique involved getting performance out Believe technique starts workshop definition Eppler 205 moderately thin medium-camber laminar-flow section Laminarflow sections designed have air passing over stay attached farther aft wing surface turbulated section get maxi mum performance wing must built true possible sharpen leading edge ra dius attempt go faster causes 205 stall lower angle attack would normally occur Some method glide-path control must included Since AMA Sailplane contests won ground must plan install some method adjust glide path model Spoilers flaps dive brakes commonly used methods adjust glide slope have used above have found have relative merits spoilers commonly used mastered give reproducible results Next just important make sure center-of-gravity proper location general thermal flying have found centerof-gravity position 38% aft leading edge yields beneficial results Now before model ever leaves shop should have smoothest wing possible working glide-path control center-of-gravity must proper location Before close workshop door almost forgot tell single greatest factor affecting stalling speed 205-equipped aircraft will wing loading means can either add wing heavy model find method remove some lead nose building finishing Sailplane pay careful attention tail surfaces Build strong also keep light pos sible Pay careful attention paint primer fuselage aft wing trailing edge Two ounces weight tail good six ounces nose yields net gain eight ounces overall increase oz per sq ft 900-sq-in model whole lot might say believe trying make early-morning landing benefit headwind makes difference much real estate youll cover Next check tailplane has 25 positive deflection reference wings center lineThis should neutral stick elevator trim level position Now off flying field master nasty old 205 Assemble model check proper radio operation essential smooth flight control surfaces return center deflected released always prefer hand-glide capable hand-launching model reasonable results its perfectly acceptable put up line immediately Regardless Im going assume hand-gliding yielded respectable flat glide out need trimming tailplane Now know thing going fly lets think about what going look first winch-launch Once off line point model wind remove thumb stick model should glide nice flat showing signs climbing diving acceler ating model behaving make 180 turn let model commence downwind models ground speed should increase may give illusion dropping nose slightly model docs show tendencies adjust elevator trim lever until settles down Note trim lever should adjusted click time should take much angular deflection tailplane create noticeable difference glide angle hope still have plenty altitude left land relaunch have safe altitude maneuver aircraft its flight path per pendicular field vision will best enable observe angle attack aircraft whilst glide model positioned flying normal cruising speed proceed gently bring nose up applying Up elevator Keep slowing model until stalls Note Up elevator gently applied aircraft should stall abruptly Ideally air craft should first begin climb slow begin mush tail down losing altitude just little tailplane deflection ward motion should halt nose should drop stall encountered aircraft exhibits tendencies should aircraft exhibits vicious tendencies try adding bit nose weight temporarily should dampen pitching acceptable limits weight helps fix nose permanently Now will know what expect land aircraft good landings start good 148 Model Aviation Pivot Plus 7500 980213 approach end aircraft flared stall no lift encountered during first flight set up normal landing approach leaving yourself plenty room final dont hit obstacle model overshoots lift encountered proceed characteristics 205 different conventional flat-bottomed airfoil way behaves thermal tum lift great will able notice much difference model will sky Out basis wing loading instead aerodynamics What Im looking early-moming late-evening ther mals would just soon leave take up Anyway remember way 205 re sponded eased elevator stick aft Re member fine line between slow flight mushing stall degrading glide Think back contests youve seen two models enter low thermal model skies out other falls out Often model fell out pilot attempting maximize climb weak thermal tried harder succeeded placing 205 backside its glide curve caused model mush out thermal Because fine line prefer fly thermal elevator trim lift encountered am ready start circle commence turn click two three clicks Up trim Im sure can probably fly model up through thermal find easier adjust aircraft fine line use rudder kill stall adjusting aircrafts airspeed through opening tightening circle Try believe will find better climb rate what would get attempting fly 205 up thermal continued Just add couple comments what Larry said installment Make sure wings outer panels have little washout built check hold tip panels against big mirror piece plate glass trailing edge tip should e glass little bit wing twist will prevent tip stalling allow plane stall straight aheadnot drop wing abruptly practice stalling Larry described last thing want hap pen during slow stall-type landing have wing drop suddenly hit ground usually produces cartwheel something gets broken Through trial error also found 38% CG location Meteor best Any farther back plane difficult control pitch ie tends stall 38% position plane still quite sensitive pitch tiny adjustments stabilator trim make noticeable difference glide angle Unfortunately transmitter does have click stops trims So get stab adjusted what like think best cruise position Im reluctant move stab trim lever because know will difficult find again goes launching landing thermaling Ive tried pulling some Up trim like Larry does works fine prefer maintain ing sweet spot stab setting using elevator thermals Expanded scale voltmeter problems Feb ruary column discussed using ESVM check state charge transmitter airborne Ni-Cd battery packs Wayne Lehman Lan caster PA wrote after reading column recently purchased ESVM finally peace mind about airborne pack advice local hobby dealer cycled Ni-Cds plugging ESVM As late checked progress first hour went bed understood no harm doing fact said good drain recharge now morning recharged pack evening surprise ESVM needle deflected opposite direction Strange thought meter should suddenly go bad checked controls model everything seemed normal fact Ive flying pack Disturbed about condition ESVM related story hobby dealer No never heard anything like packed up meter sent back manufacturer checked said waa okay read column can imagine perked up read start stopwatch plug ESVM stand cou ple hours watching meter go down because essential let pack discharge below 44 volts cell reversal other bad things can happen couldnt anyone have told cell reversal bad What other bad things way re-reverse Ni Cds First lets analyze Waynes ESYM jumped opposite ie downscale direc tion ESVMs special-application instruments designed read about 43 53 volts airborne packs 86 103 volts transmit ters Just regular voltmeter will go off scale right too much voltage put ESVM will go off scale left too little voltage put ESVM trying read least 43 volts 36 volts left downscale far concerned What must have happened Wayne cells pack either went dead reversed left plugged ESVM So after full recharge pack putting out about 36 volts instead nominal 48 1 2 volts per cell say nominal because freshly-charged Ni-Cd cell will measure 125 volts will rapidly fall 120 volts will stay its useful discharge So since 36 volts below ESVMs rest position needle jumped downscale left Its remarkable Waynes receiver continued work Most wont cell out Now Waynes questions reversed cell actually worse weak dead cell because putting out little voltage wrong direc tion subtracting voltage other cells recharge two will often get cell turned around proper direction Ive heard shocking reversed cell higher-thannormal voltage get turned around have never tried myself Another bad thing happens fullydischarged cells venting internal gasses can lead leakage likelihood shortened cell life among us has inadvertently left receiver transmitter switch few days Usually pack will come back charging normallybut bad thing because danger decreasing cell life Sometimes Waynes case cell refuses cooperate thing replace figure Ni-Cds minor cost hobby Id rather buy new ones take chance demolishing plane Jeff Troy Event Director Soaring 1985 86 Nats now AMAs Assis tant Director Public Relations Jeff builds beau tiful Scale Sailplanes sent tip will interest other Scale builders Jeff writes ~n56 Engine 35-45 501.z213AIpha 15 $4995 Span 46 Engine 23-25W 34 Channels 50K220Super Pacer $4295 %A ll July1987 149 I, Span 4O/4123C Engine 049-05150L2034C e High MKII $3195 -120 $149 5,d $200 ou conpit catalog ACE tan, ar available deals oda diaot add $200 Handling Faa 116Wl9thSt I11Vfl Winninocuill, MA BUMBLE VEE FLYING FUN 2 super little sport plane Bumble Vee designed 05 electric power Fast building different looking great flying Bumble Vee pure fun fl PROIUCTS INC 714 592-5144 510 E Arrow Highway San Dimas CA 91773 organization called Vintage Sailplane Association dedicated preservation flying antique Gliders national publication called Bungee Cord VSA really good source documentation vin tage Sailplanes have first-class archivist person Mr Lee Buell 13507 Brightfield Lane Hemdon VA 22071 Data available VSA members also nonmembers Builders should check Lee subjects available prices can tell wealth information hand last can document some strange birds have eager try couldnt find proof-of-scale would urge Scale fans contact Lee Jan Scott Scott Airpark Lovettsville VA 22080 get membership information wonderful orga nization Membership very inexpensive efforts quite genuine As said above membership required have access material what nice way say Thank plus receive Bungee Cord guess would too out character mention passing have signed editor Model Soaring column Bungee Cord Since Bungee Cord full-scale publica tion consider quite honor will try very hard keep interesting What means reach Level V following piece Mike Hickman Pikes Peak Soaring Societys newsletter Randy Randy Reynolds clubs newsletter editor resident hyper person Hope enjoy did quite some time now Randy has after write article club newsletter about what means feels like reach Level V League Silent Flights Sodring Ac complishment Program Ive sat down now several different occasions write task much difficult ever imag ined Its sort like trying talk about close friend has just passed away five years goal reaching Level V seemed control move made Soaring day finally reached goal swallowed left huge vacuum left goal properly place perspective need know something about LSF Program help have included copy also includes summary require ments level take moment study requirements quickly obvious start quite simple tasks progres sively increase difficulty started flying Sailplanes August 81 1 like other newcomers sport could get plane up lucky enough stumble thermal might get 10- 15-minute flight wasnt until flew first contest hooked both competition camaraderie same time humbled little knew about didnt take much see rate going sure wouldnt winning contests make long story short found out about LSF program immediately apparent tool needed program didnt have worry about first goal having to win contests would come later now con centrate requirements Level I just make couple five-minute flights learn land reasonably close spot ground Now wasnt too bad Bring Level II Now landings get touch demanding have start flying contests wait dont seem intimidating now Could possibly due Level landing practice sessions point LSF program allows follow well-thought-out series goals leading ever-improving flying skills goal close enough reasonably dedicated individual should able reach result will will start win will eventually find yourself starting work Level V voucher As have already mentioned once com pleted requirements Level V seemed though loss what should next other activities directed toward completing requirements now sud denly found myself goal What let down Well folks its taken six months now now have new goalF3B also have new enthusiasm knows what may next Lets see now next team selection 7? See field Thanks story Mikea very persuasive testimonial value LSF program deed really no reason Sailplaners should participate League Silent Flight improve flying its fun best its practicallyfree get started send name address also enclose five stamps LSF PO Box 647 Mundelein IL 60060 will get back Level voucher full descrip tion program National Soaring Societys 1987 Soar-In Contests will held around country between June 1 July 26 idea have similar contest clubs roughly same time have fun spread word about NSS Marshall Long Texas taking over Dick Crowley Soar-In Coordinator year time read AMA sanctions should set check Contest Calendar magazine Soar-In closest SOARs Scale Uprising coming up August 1 2 original dates July II 12 switched because near-conflict Nats promises biggest all-Scale Soaring event held country Contest Coor dinator Steve Moskal provided details August 1AMA Sport Scale six classes see AMA rule book August 1-2Thermal Duration six classes Ships must have flown AMA Sport Scale In/out 100-ft-diameter circle 20 landing bonus points Duration will five 10 minutes de pending weatherwith objective seven eight rounds flown two days Straight scoring will used no points Sport Scale Electric-motor Gliders will judged flown same above will no limit motor run number charges Byron Blakeslee 3134 Winnebago Dr Se dalia CO 80135 RC Aerobatics/Van Putte Continued page 51 posal have opinion other rule change proposals get off apathy write district Board member recent contest several us talking Don Lowe about what wed like see way competition among top-level national international group RC Aerobatic Pattern fliers consensus wed have everyone fly same airplane wed prevent judges knowing identity flier Wouldnt great carefully-nurtured halos would worthless everyone would have equal chance win basis flying ability alone possible consider such com petition thought kicked around few ideas about obvious place start airplane must capable performing FAI pattern well hands superior pilots thought Hobby Shack Supra Fly 1 50 Model Aviation
Edition: Model Aviation - 1987/07
Page Numbers: 48, 49, 148, 149, 150
Radio Control Soaring Byron Blakeslee Germany compete Big world championships Its going tough competition Europeans formidable F3B anyway will home turf West Germans have very strong team plus cur rent World Champ RoIf Decker Countries com peting will include Argentina Australia Bel gium Canada China Denmark Finland France East Germany Great Britain Hungary Israel Japan Netherlands New Zealand Norway Poland Spain Sweden Switzerland USA West Germany Last month talked about teams budget need spend amount money order have chance doing well maybe win ning Osnabruck Well time growing short still have some funds raise want guys concentrating contestnot worrying theres enough funding So havent sent team patch pin please sit down write check $15 both itemsor $10 patchor $5 pin alone address US F3B Soaring Team PO Box 9328 Albuquerque NM 87119 Dont forget contribution will also get entered sweepstakes lots great mer chandise prizes big prize $15 donation round trip airline ticket Germany has firmed up write March 30 contingent airline donating ticket now its still negotiations However merchandise list continues grow now cludes Airtronics Top Flite Bob Martin ACE RIC Carl Goldberg Midwest Sky High R/C MAN Six Championship radios six Andante kits Six Antares kits 36 rolls MonoKote Three Bob Cat kits 10 Talon kits three Pussycat kits Hobie Hawk 1FF charge system Six Gentle Lady kits Lazybird kit Airborne Thermal Detec tor Three subscriptions closing F3B team report team would like share part letter sent Mrs Patricia Pruss may never change world sportsmanship friendship might make difference Slope sites find fol lowing letter written Barry Kurath Portland PASS Club telling clubs experi ences Sloping last winter may typical thought youd enjoy reading what people will get some good flying got tired reading about great Slope flying Torrey Pines England Alps etc PASS got busy found some local sites must rival best Ill talk about MeKinly Ridge now some others other time McKinley Ridge runs north south about 3900 ft Gifford Pinchot National Forest Cascade Mountains prevailing winds east west almost always good lift air rises some 2500 ft flows over ridge either direction Ten us braved mean braved snow-covered logging road day glorious flying summer plan combine camp-out pylon race fun-fly slope Its bit over hour Portland combines great flying rea sonable access Thanks info photos Barry Im sure everyone looking pictures will feel bit cooler husband two bequests willthings truly believed first SOAR second F3B team wish best Dans name Ill say Winning Southern California Scale Sloping Bill Liscomb 48 Model Aviation F-I 6-Inspired Power Scale Slope Soarer Advanced GliderConcepts PSS very popular Europe now catching about model column Bill Llscomb sentthese photos two big Scale ships atTorrey PInes CA AS-W 24L istrom German Roebers kitwith glassfuselage obechi-sheeted 4-meterfoam wings Weight is91/2 lb photo AS-K 21R interesting shows dew hasformed wings during flightnone forward part chord airflow laminar German Rodel kit Span 42 meters Gryphon making pass along Oregons McKinley Ridge slope Thats 12307-ft Mt Adams background What well-dressed Slope flier wears Cascade Mountains December People areLtoR EricJackson Allan Halieck Barry Kurath whotook photos Carshad CA sent some pictures latest -scale birds writes much laminar flow get -scale Glider Check out side view wing AS-K 21 photo taken im mediately after landing conditions Torrey Pines day such clouds about 100 ft over top cliff K 21 spent about half its one-hour flight ducking out clouds Upon landing noticed con densation moisture dew wing stabexcept forward 15% Glad camera answer question build -scale ships usually put 20 40 hours per week building Because amount work already done German kits takes about same amount time build -scale beauties does build say Sagitta 600probably less latest project -scale 1890 Chanute biplane hang glider Max speed appears about 20 mph Photos follow Continued page 148 Connectors Designed anything electrical requiring quick disconnects Ideal Power Pack Connector tar electric planes cars boats Designed high vibration environment Cycled ten Thousand times electrical failure O Anderson Power Products Inc uu D50 CRISES SORRY NO PERSONAL CHECKS OR COD ORDERS Only certified checks money orders accepted Minimum arderSl000 forttiree packages 4 Powerpoles $300 per package plus $100 ship ping handling CT residents add 75% sales tax Prices subject change notice Dealer inquiries invited further information dealer prices send SASE Bus Card SERMOS RIC SNAP CONNECTORS Cedar Corners Station Box 16787 Stamford CT 06905 MINI-STRIPSPRECISION DIE-CUT Medium Garnet SAVES TIMEREPLACEMENTFine Garnet AND EFFORT $175 SANDING BELTSAssId Water Pruol TEE ALUMINUM EXTRUSION SANDING BLOCK ter RUFF-STUFF Selt-adheslee nand paper Large Tote SerVice Weal Wur Out 11 inch82- Handy Urn 22 Inch $175 BEARERRUFF e STUFF SELF ADHESIVE SHEET SANOMPER MAKE YOUR OWN SPECIAL SANDING SHAPES Eany Us$1 09 Medium Flu r Phi MINIesAw $7 COMPACT 10 inGh HACK SAW SAWS ANYTHING ANYWHERE Saw hat ragged din-cast traine cemlertahin chlp-preet pinstic Inneat handin Receding ewe ad pantahin B hinds gin accena Cute weed pinstic metal HARDENED MUSIC WIRE extra htndns3/$199 Add 20% postage Send 25 castilog Dealers & Distributors Welcomed Phone 703 273-9593 FLYLINE MODELS INC PO Roe 213A Fuirfo, Vrr5EnLo 22t31 us July1987 49 Mike Bamberg launches Gryphon flying wing directly far-off Mt Hood elevation 11235 ft Oregon buddies doing some winter Slope Soaring Ly APPLIED DESIGN CORPORATION 738 hon SI El Senunde CA 90245 SANDER madSTABLU HA RE DEE V Padded Rate curves Handy Held EasyteUse$255 Remember Folding INTERCEPTOR Ready Fly $795 U-butld Ktt$495 AIRCRAFT CC 1PANY RO Box 68132 Portland OR 97268 Classic R/CScaLAKES THE 40 Wing 15 25 Engines Phnn 206 77680671 IGLIDER VIDEO TAPES WIND SONG unchallenged open class thermal competition champion NOW 2 CONSTRUCTION VIDEO TAPES ARE AVAILABLE help insure properly construct advanced composite multichannel perfbrmance champion tapes also apply National Champion 2-meter Pixy amazing standard class Camano aid construction tiny wingeron Pivot Tape 12 105 minutes long shows foam/balsa wing construction Tape 13 64 minutes long deals fuselage construction radio installation final fit finish Tape 11 new 1987 promotional video tape shows glider kits spectacular action includes what probably the beautiful breathtaking RIG glider flying fbotage available anywhere including Windsong climbing out handlaunches Bob Dodgson shares some design philosophy made Windsong significant thermal competition glider design time 1 tape$15 deposit S/H total keep tape 2 tapes $30 deposit S/H total keep tapes 3 tapes $40 deposit S/H total keep tapes Send 2 stamps catalog WIN OSONG CAMANO 2-Meter PIXY new PIVOT PLUS NEW VIDEO TAPES specify VHS BETA 8mm format VISA & MASTER CHARGE Ok Windsong 19995 DODGSON DESIGNS Camano 15995 Pixy 14995 21230 DAMSON ROAD BOTHELL WA AC Soaring/Blakestee Continued page 49 Bill included some additional info latest projects said got AS-K 21 Harry Brooks Models England AS-W 24 Silent Flightalso England Air freight runs about $100 per kit Robers AS-W 24 very fast clean Robers also makes Discus DG-202 kitsvery high quality Robel AS-K 21 very docile very pretty air Also no problem fitting radio Power Scale Soanmg getting more popular idea build Scale Glider out jet piston-powered prototype fly slope F-16 photo Advanced Gli der Concepts PO Box 1019 Manhattan Beach CA 90266 has extra-long fiberglass fuselage wings made blue foam covered As-in plywood span 42 weighs 26 oz needs two-channel radio assembly said easy Available Welshire Hob bies $120 wnte AGC Fly 205 Larry Jolly letters readers most-requested information straight scoop flying Soaring experts Larry Jolly yes MAs Helicopter columnist eminently qualified advise us Soaring having won Nats several times well other major contests following first half article Larry wrote Pacific Soaring Association newsletter has reprinted other club newsletters because such significant piece Larry specifically discusses Eppler 205 airfoil because uses several planes kits-most notably 128-in-span Meteor 100-in Pantera though has 205 mind much what says applies just about Sailplane/airfoil combination second half will next months column Take away Larry Back 1978 Woody Blanchard received copy Dr Epplers then-new Eppler 205 air foil Woody good enough send copy coordinates friend Lee Renaud Shortly thereafter Sagitta born What signif icant about Sagitta first US kit designed emphasize moderate wing load ing high L/D ship did compete F3B well primarily designed AMA Duration model People soon realized advantage 205 gave gave flier ability cover lot ground thereby giving better chance encountering lift still yielding moderate sink rate Once lift encountered 205 responded well better flat-bottom section climbing up away altitude reached nose could dropped model would soon come step zoom across sky roses however 205 has rather peaky performance chart means airfoil performance degrades rapidly once angle attack exceeds relatively small angle either positive negative simple terms ability model equipped 205 cover ground greatly affected method pilot flies elevator flying planning fly model equipped 205 airfoil definite technique involved getting performance out Believe technique starts workshop definition Eppler 205 moderately thin medium-camber laminar-flow section Laminarflow sections designed have air passing over stay attached farther aft wing surface turbulated section get maxi mum performance wing must built true possible sharpen leading edge ra dius attempt go faster causes 205 stall lower angle attack would normally occur Some method glide-path control must included Since AMA Sailplane contests won ground must plan install some method adjust glide path model Spoilers flaps dive brakes commonly used methods adjust glide slope have used above have found have relative merits spoilers commonly used mastered give reproducible results Next just important make sure center-of-gravity proper location general thermal flying have found centerof-gravity position 38% aft leading edge yields beneficial results Now before model ever leaves shop should have smoothest wing possible working glide-path control center-of-gravity must proper location Before close workshop door almost forgot tell single greatest factor affecting stalling speed 205-equipped aircraft will wing loading means can either add wing heavy model find method remove some lead nose building finishing Sailplane pay careful attention tail surfaces Build strong also keep light pos sible Pay careful attention paint primer fuselage aft wing trailing edge Two ounces weight tail good six ounces nose yields net gain eight ounces overall increase oz per sq ft 900-sq-in model whole lot might say believe trying make early-morning landing benefit headwind makes difference much real estate youll cover Next check tailplane has 25 positive deflection reference wings center lineThis should neutral stick elevator trim level position Now off flying field master nasty old 205 Assemble model check proper radio operation essential smooth flight control surfaces return center deflected released always prefer hand-glide capable hand-launching model reasonable results its perfectly acceptable put up line immediately Regardless Im going assume hand-gliding yielded respectable flat glide out need trimming tailplane Now know thing going fly lets think about what going look first winch-launch Once off line point model wind remove thumb stick model should glide nice flat showing signs climbing diving acceler ating model behaving make 180 turn let model commence downwind models ground speed should increase may give illusion dropping nose slightly model docs show tendencies adjust elevator trim lever until settles down Note trim lever should adjusted click time should take much angular deflection tailplane create noticeable difference glide angle hope still have plenty altitude left land relaunch have safe altitude maneuver aircraft its flight path per pendicular field vision will best enable observe angle attack aircraft whilst glide model positioned flying normal cruising speed proceed gently bring nose up applying Up elevator Keep slowing model until stalls Note Up elevator gently applied aircraft should stall abruptly Ideally air craft should first begin climb slow begin mush tail down losing altitude just little tailplane deflection ward motion should halt nose should drop stall encountered aircraft exhibits tendencies should aircraft exhibits vicious tendencies try adding bit nose weight temporarily should dampen pitching acceptable limits weight helps fix nose permanently Now will know what expect land aircraft good landings start good 148 Model Aviation Pivot Plus 7500 980213 approach end aircraft flared stall no lift encountered during first flight set up normal landing approach leaving yourself plenty room final dont hit obstacle model overshoots lift encountered proceed characteristics 205 different conventional flat-bottomed airfoil way behaves thermal tum lift great will able notice much difference model will sky Out basis wing loading instead aerodynamics What Im looking early-moming late-evening ther mals would just soon leave take up Anyway remember way 205 re sponded eased elevator stick aft Re member fine line between slow flight mushing stall degrading glide Think back contests youve seen two models enter low thermal model skies out other falls out Often model fell out pilot attempting maximize climb weak thermal tried harder succeeded placing 205 backside its glide curve caused model mush out thermal Because fine line prefer fly thermal elevator trim lift encountered am ready start circle commence turn click two three clicks Up trim Im sure can probably fly model up through thermal find easier adjust aircraft fine line use rudder kill stall adjusting aircrafts airspeed through opening tightening circle Try believe will find better climb rate what would get attempting fly 205 up thermal continued Just add couple comments what Larry said installment Make sure wings outer panels have little washout built check hold tip panels against big mirror piece plate glass trailing edge tip should e glass little bit wing twist will prevent tip stalling allow plane stall straight aheadnot drop wing abruptly practice stalling Larry described last thing want hap pen during slow stall-type landing have wing drop suddenly hit ground usually produces cartwheel something gets broken Through trial error also found 38% CG location Meteor best Any farther back plane difficult control pitch ie tends stall 38% position plane still quite sensitive pitch tiny adjustments stabilator trim make noticeable difference glide angle Unfortunately transmitter does have click stops trims So get stab adjusted what like think best cruise position Im reluctant move stab trim lever because know will difficult find again goes launching landing thermaling Ive tried pulling some Up trim like Larry does works fine prefer maintain ing sweet spot stab setting using elevator thermals Expanded scale voltmeter problems Feb ruary column discussed using ESVM check state charge transmitter airborne Ni-Cd battery packs Wayne Lehman Lan caster PA wrote after reading column recently purchased ESVM finally peace mind about airborne pack advice local hobby dealer cycled Ni-Cds plugging ESVM As late checked progress first hour went bed understood no harm doing fact said good drain recharge now morning recharged pack evening surprise ESVM needle deflected opposite direction Strange thought meter should suddenly go bad checked controls model everything seemed normal fact Ive flying pack Disturbed about condition ESVM related story hobby dealer No never heard anything like packed up meter sent back manufacturer checked said waa okay read column can imagine perked up read start stopwatch plug ESVM stand cou ple hours watching meter go down because essential let pack discharge below 44 volts cell reversal other bad things can happen couldnt anyone have told cell reversal bad What other bad things way re-reverse Ni Cds First lets analyze Waynes ESYM jumped opposite ie downscale direc tion ESVMs special-application instruments designed read about 43 53 volts airborne packs 86 103 volts transmit ters Just regular voltmeter will go off scale right too much voltage put ESVM will go off scale left too little voltage put ESVM trying read least 43 volts 36 volts left downscale far concerned What must have happened Wayne cells pack either went dead reversed left plugged ESVM So after full recharge pack putting out about 36 volts instead nominal 48 1 2 volts per cell say nominal because freshly-charged Ni-Cd cell will measure 125 volts will rapidly fall 120 volts will stay its useful discharge So since 36 volts below ESVMs rest position needle jumped downscale left Its remarkable Waynes receiver continued work Most wont cell out Now Waynes questions reversed cell actually worse weak dead cell because putting out little voltage wrong direc tion subtracting voltage other cells recharge two will often get cell turned around proper direction Ive heard shocking reversed cell higher-thannormal voltage get turned around have never tried myself Another bad thing happens fullydischarged cells venting internal gasses can lead leakage likelihood shortened cell life among us has inadvertently left receiver transmitter switch few days Usually pack will come back charging normallybut bad thing because danger decreasing cell life Sometimes Waynes case cell refuses cooperate thing replace figure Ni-Cds minor cost hobby Id rather buy new ones take chance demolishing plane Jeff Troy Event Director Soaring 1985 86 Nats now AMAs Assis tant Director Public Relations Jeff builds beau tiful Scale Sailplanes sent tip will interest other Scale builders Jeff writes ~n56 Engine 35-45 501.z213AIpha 15 $4995 Span 46 Engine 23-25W 34 Channels 50K220Super Pacer $4295 %A ll July1987 149 I, Span 4O/4123C Engine 049-05150L2034C e High MKII $3195 -120 $149 5,d $200 ou conpit catalog ACE tan, ar available deals oda diaot add $200 Handling Faa 116Wl9thSt I11Vfl Winninocuill, MA BUMBLE VEE FLYING FUN 2 super little sport plane Bumble Vee designed 05 electric power Fast building different looking great flying Bumble Vee pure fun fl PROIUCTS INC 714 592-5144 510 E Arrow Highway San Dimas CA 91773 organization called Vintage Sailplane Association dedicated preservation flying antique Gliders national publication called Bungee Cord VSA really good source documentation vin tage Sailplanes have first-class archivist person Mr Lee Buell 13507 Brightfield Lane Hemdon VA 22071 Data available VSA members also nonmembers Builders should check Lee subjects available prices can tell wealth information hand last can document some strange birds have eager try couldnt find proof-of-scale would urge Scale fans contact Lee Jan Scott Scott Airpark Lovettsville VA 22080 get membership information wonderful orga nization Membership very inexpensive efforts quite genuine As said above membership required have access material what nice way say Thank plus receive Bungee Cord guess would too out character mention passing have signed editor Model Soaring column Bungee Cord Since Bungee Cord full-scale publica tion consider quite honor will try very hard keep interesting What means reach Level V following piece Mike Hickman Pikes Peak Soaring Societys newsletter Randy Randy Reynolds clubs newsletter editor resident hyper person Hope enjoy did quite some time now Randy has after write article club newsletter about what means feels like reach Level V League Silent Flights Sodring Ac complishment Program Ive sat down now several different occasions write task much difficult ever imag ined Its sort like trying talk about close friend has just passed away five years goal reaching Level V seemed control move made Soaring day finally reached goal swallowed left huge vacuum left goal properly place perspective need know something about LSF Program help have included copy also includes summary require ments level take moment study requirements quickly obvious start quite simple tasks progres sively increase difficulty started flying Sailplanes August 81 1 like other newcomers sport could get plane up lucky enough stumble thermal might get 10- 15-minute flight wasnt until flew first contest hooked both competition camaraderie same time humbled little knew about didnt take much see rate going sure wouldnt winning contests make long story short found out about LSF program immediately apparent tool needed program didnt have worry about first goal having to win contests would come later now con centrate requirements Level I just make couple five-minute flights learn land reasonably close spot ground Now wasnt too bad Bring Level II Now landings get touch demanding have start flying contests wait dont seem intimidating now Could possibly due Level landing practice sessions point LSF program allows follow well-thought-out series goals leading ever-improving flying skills goal close enough reasonably dedicated individual should able reach result will will start win will eventually find yourself starting work Level V voucher As have already mentioned once com pleted requirements Level V seemed though loss what should next other activities directed toward completing requirements now sud denly found myself goal What let down Well folks its taken six months now now have new goalF3B also have new enthusiasm knows what may next Lets see now next team selection 7? See field Thanks story Mikea very persuasive testimonial value LSF program deed really no reason Sailplaners should participate League Silent Flight improve flying its fun best its practicallyfree get started send name address also enclose five stamps LSF PO Box 647 Mundelein IL 60060 will get back Level voucher full descrip tion program National Soaring Societys 1987 Soar-In Contests will held around country between June 1 July 26 idea have similar contest clubs roughly same time have fun spread word about NSS Marshall Long Texas taking over Dick Crowley Soar-In Coordinator year time read AMA sanctions should set check Contest Calendar magazine Soar-In closest SOARs Scale Uprising coming up August 1 2 original dates July II 12 switched because near-conflict Nats promises biggest all-Scale Soaring event held country Contest Coor dinator Steve Moskal provided details August 1AMA Sport Scale six classes see AMA rule book August 1-2Thermal Duration six classes Ships must have flown AMA Sport Scale In/out 100-ft-diameter circle 20 landing bonus points Duration will five 10 minutes de pending weatherwith objective seven eight rounds flown two days Straight scoring will used no points Sport Scale Electric-motor Gliders will judged flown same above will no limit motor run number charges Byron Blakeslee 3134 Winnebago Dr Se dalia CO 80135 RC Aerobatics/Van Putte Continued page 51 posal have opinion other rule change proposals get off apathy write district Board member recent contest several us talking Don Lowe about what wed like see way competition among top-level national international group RC Aerobatic Pattern fliers consensus wed have everyone fly same airplane wed prevent judges knowing identity flier Wouldnt great carefully-nurtured halos would worthless everyone would have equal chance win basis flying ability alone possible consider such com petition thought kicked around few ideas about obvious place start airplane must capable performing FAI pattern well hands superior pilots thought Hobby Shack Supra Fly 1 50 Model Aviation
Edition: Model Aviation - 1987/07
Page Numbers: 48, 49, 148, 149, 150
Radio Control Soaring Byron Blakeslee Germany compete Big world championships Its going tough competition Europeans formidable F3B anyway will home turf West Germans have very strong team plus cur rent World Champ RoIf Decker Countries com peting will include Argentina Australia Bel gium Canada China Denmark Finland France East Germany Great Britain Hungary Israel Japan Netherlands New Zealand Norway Poland Spain Sweden Switzerland USA West Germany Last month talked about teams budget need spend amount money order have chance doing well maybe win ning Osnabruck Well time growing short still have some funds raise want guys concentrating contestnot worrying theres enough funding So havent sent team patch pin please sit down write check $15 both itemsor $10 patchor $5 pin alone address US F3B Soaring Team PO Box 9328 Albuquerque NM 87119 Dont forget contribution will also get entered sweepstakes lots great mer chandise prizes big prize $15 donation round trip airline ticket Germany has firmed up write March 30 contingent airline donating ticket now its still negotiations However merchandise list continues grow now cludes Airtronics Top Flite Bob Martin ACE RIC Carl Goldberg Midwest Sky High R/C MAN Six Championship radios six Andante kits Six Antares kits 36 rolls MonoKote Three Bob Cat kits 10 Talon kits three Pussycat kits Hobie Hawk 1FF charge system Six Gentle Lady kits Lazybird kit Airborne Thermal Detec tor Three subscriptions closing F3B team report team would like share part letter sent Mrs Patricia Pruss may never change world sportsmanship friendship might make difference Slope sites find fol lowing letter written Barry Kurath Portland PASS Club telling clubs experi ences Sloping last winter may typical thought youd enjoy reading what people will get some good flying got tired reading about great Slope flying Torrey Pines England Alps etc PASS got busy found some local sites must rival best Ill talk about MeKinly Ridge now some others other time McKinley Ridge runs north south about 3900 ft Gifford Pinchot National Forest Cascade Mountains prevailing winds east west almost always good lift air rises some 2500 ft flows over ridge either direction Ten us braved mean braved snow-covered logging road day glorious flying summer plan combine camp-out pylon race fun-fly slope Its bit over hour Portland combines great flying rea sonable access Thanks info photos Barry Im sure everyone looking pictures will feel bit cooler husband two bequests willthings truly believed first SOAR second F3B team wish best Dans name Ill say Winning Southern California Scale Sloping Bill Liscomb 48 Model Aviation F-I 6-Inspired Power Scale Slope Soarer Advanced GliderConcepts PSS very popular Europe now catching about model column Bill Llscomb sentthese photos two big Scale ships atTorrey PInes CA AS-W 24L istrom German Roebers kitwith glassfuselage obechi-sheeted 4-meterfoam wings Weight is91/2 lb photo AS-K 21R interesting shows dew hasformed wings during flightnone forward part chord airflow laminar German Rodel kit Span 42 meters Gryphon making pass along Oregons McKinley Ridge slope Thats 12307-ft Mt Adams background What well-dressed Slope flier wears Cascade Mountains December People areLtoR EricJackson Allan Halieck Barry Kurath whotook photos Carshad CA sent some pictures latest -scale birds writes much laminar flow get -scale Glider Check out side view wing AS-K 21 photo taken im mediately after landing conditions Torrey Pines day such clouds about 100 ft over top cliff K 21 spent about half its one-hour flight ducking out clouds Upon landing noticed con densation moisture dew wing stabexcept forward 15% Glad camera answer question build -scale ships usually put 20 40 hours per week building Because amount work already done German kits takes about same amount time build -scale beauties does build say Sagitta 600probably less latest project -scale 1890 Chanute biplane hang glider Max speed appears about 20 mph Photos follow Continued page 148 Connectors Designed anything electrical requiring quick disconnects Ideal Power Pack Connector tar electric planes cars boats Designed high vibration environment Cycled ten Thousand times electrical failure O Anderson Power Products Inc uu D50 CRISES SORRY NO PERSONAL CHECKS OR COD ORDERS Only certified checks money orders accepted Minimum arderSl000 forttiree packages 4 Powerpoles $300 per package plus $100 ship ping handling CT residents add 75% sales tax Prices subject change notice Dealer inquiries invited further information dealer prices send SASE Bus Card SERMOS RIC SNAP CONNECTORS Cedar Corners Station Box 16787 Stamford CT 06905 MINI-STRIPSPRECISION DIE-CUT Medium Garnet SAVES TIMEREPLACEMENTFine Garnet AND EFFORT $175 SANDING BELTSAssId Water Pruol TEE ALUMINUM EXTRUSION SANDING BLOCK ter RUFF-STUFF Selt-adheslee nand paper Large Tote SerVice Weal Wur Out 11 inch82- Handy Urn 22 Inch $175 BEARERRUFF e STUFF SELF ADHESIVE SHEET SANOMPER MAKE YOUR OWN SPECIAL SANDING SHAPES Eany Us$1 09 Medium Flu r Phi MINIesAw $7 COMPACT 10 inGh HACK SAW SAWS ANYTHING ANYWHERE Saw hat ragged din-cast traine cemlertahin chlp-preet pinstic Inneat handin Receding ewe ad pantahin B hinds gin accena Cute weed pinstic metal HARDENED MUSIC WIRE extra htndns3/$199 Add 20% postage Send 25 castilog Dealers & Distributors Welcomed Phone 703 273-9593 FLYLINE MODELS INC PO Roe 213A Fuirfo, Vrr5EnLo 22t31 us July1987 49 Mike Bamberg launches Gryphon flying wing directly far-off Mt Hood elevation 11235 ft Oregon buddies doing some winter Slope Soaring Ly APPLIED DESIGN CORPORATION 738 hon SI El Senunde CA 90245 SANDER madSTABLU HA RE DEE V Padded Rate curves Handy Held EasyteUse$255 Remember Folding INTERCEPTOR Ready Fly $795 U-butld Ktt$495 AIRCRAFT CC 1PANY RO Box 68132 Portland OR 97268 Classic R/CScaLAKES THE 40 Wing 15 25 Engines Phnn 206 77680671 IGLIDER VIDEO TAPES WIND SONG unchallenged open class thermal competition champion NOW 2 CONSTRUCTION VIDEO TAPES ARE AVAILABLE help insure properly construct advanced composite multichannel perfbrmance champion tapes also apply National Champion 2-meter Pixy amazing standard class Camano aid construction tiny wingeron Pivot Tape 12 105 minutes long shows foam/balsa wing construction Tape 13 64 minutes long deals fuselage construction radio installation final fit finish Tape 11 new 1987 promotional video tape shows glider kits spectacular action includes what probably the beautiful breathtaking RIG glider flying fbotage available anywhere including Windsong climbing out handlaunches Bob Dodgson shares some design philosophy made Windsong significant thermal competition glider design time 1 tape$15 deposit S/H total keep tape 2 tapes $30 deposit S/H total keep tapes 3 tapes $40 deposit S/H total keep tapes Send 2 stamps catalog WIN OSONG CAMANO 2-Meter PIXY new PIVOT PLUS NEW VIDEO TAPES specify VHS BETA 8mm format VISA & MASTER CHARGE Ok Windsong 19995 DODGSON DESIGNS Camano 15995 Pixy 14995 21230 DAMSON ROAD BOTHELL WA AC Soaring/Blakestee Continued page 49 Bill included some additional info latest projects said got AS-K 21 Harry Brooks Models England AS-W 24 Silent Flightalso England Air freight runs about $100 per kit Robers AS-W 24 very fast clean Robers also makes Discus DG-202 kitsvery high quality Robel AS-K 21 very docile very pretty air Also no problem fitting radio Power Scale Soanmg getting more popular idea build Scale Glider out jet piston-powered prototype fly slope F-16 photo Advanced Gli der Concepts PO Box 1019 Manhattan Beach CA 90266 has extra-long fiberglass fuselage wings made blue foam covered As-in plywood span 42 weighs 26 oz needs two-channel radio assembly said easy Available Welshire Hob bies $120 wnte AGC Fly 205 Larry Jolly letters readers most-requested information straight scoop flying Soaring experts Larry Jolly yes MAs Helicopter columnist eminently qualified advise us Soaring having won Nats several times well other major contests following first half article Larry wrote Pacific Soaring Association newsletter has reprinted other club newsletters because such significant piece Larry specifically discusses Eppler 205 airfoil because uses several planes kits-most notably 128-in-span Meteor 100-in Pantera though has 205 mind much what says applies just about Sailplane/airfoil combination second half will next months column Take away Larry Back 1978 Woody Blanchard received copy Dr Epplers then-new Eppler 205 air foil Woody good enough send copy coordinates friend Lee Renaud Shortly thereafter Sagitta born What signif icant about Sagitta first US kit designed emphasize moderate wing load ing high L/D ship did compete F3B well primarily designed AMA Duration model People soon realized advantage 205 gave gave flier ability cover lot ground thereby giving better chance encountering lift still yielding moderate sink rate Once lift encountered 205 responded well better flat-bottom section climbing up away altitude reached nose could dropped model would soon come step zoom across sky roses however 205 has rather peaky performance chart means airfoil performance degrades rapidly once angle attack exceeds relatively small angle either positive negative simple terms ability model equipped 205 cover ground greatly affected method pilot flies elevator flying planning fly model equipped 205 airfoil definite technique involved getting performance out Believe technique starts workshop definition Eppler 205 moderately thin medium-camber laminar-flow section Laminarflow sections designed have air passing over stay attached farther aft wing surface turbulated section get maxi mum performance wing must built true possible sharpen leading edge ra dius attempt go faster causes 205 stall lower angle attack would normally occur Some method glide-path control must included Since AMA Sailplane contests won ground must plan install some method adjust glide path model Spoilers flaps dive brakes commonly used methods adjust glide slope have used above have found have relative merits spoilers commonly used mastered give reproducible results Next just important make sure center-of-gravity proper location general thermal flying have found centerof-gravity position 38% aft leading edge yields beneficial results Now before model ever leaves shop should have smoothest wing possible working glide-path control center-of-gravity must proper location Before close workshop door almost forgot tell single greatest factor affecting stalling speed 205-equipped aircraft will wing loading means can either add wing heavy model find method remove some lead nose building finishing Sailplane pay careful attention tail surfaces Build strong also keep light pos sible Pay careful attention paint primer fuselage aft wing trailing edge Two ounces weight tail good six ounces nose yields net gain eight ounces overall increase oz per sq ft 900-sq-in model whole lot might say believe trying make early-morning landing benefit headwind makes difference much real estate youll cover Next check tailplane has 25 positive deflection reference wings center lineThis should neutral stick elevator trim level position Now off flying field master nasty old 205 Assemble model check proper radio operation essential smooth flight control surfaces return center deflected released always prefer hand-glide capable hand-launching model reasonable results its perfectly acceptable put up line immediately Regardless Im going assume hand-gliding yielded respectable flat glide out need trimming tailplane Now know thing going fly lets think about what going look first winch-launch Once off line point model wind remove thumb stick model should glide nice flat showing signs climbing diving acceler ating model behaving make 180 turn let model commence downwind models ground speed should increase may give illusion dropping nose slightly model docs show tendencies adjust elevator trim lever until settles down Note trim lever should adjusted click time should take much angular deflection tailplane create noticeable difference glide angle hope still have plenty altitude left land relaunch have safe altitude maneuver aircraft its flight path per pendicular field vision will best enable observe angle attack aircraft whilst glide model positioned flying normal cruising speed proceed gently bring nose up applying Up elevator Keep slowing model until stalls Note Up elevator gently applied aircraft should stall abruptly Ideally air craft should first begin climb slow begin mush tail down losing altitude just little tailplane deflection ward motion should halt nose should drop stall encountered aircraft exhibits tendencies should aircraft exhibits vicious tendencies try adding bit nose weight temporarily should dampen pitching acceptable limits weight helps fix nose permanently Now will know what expect land aircraft good landings start good 148 Model Aviation Pivot Plus 7500 980213 approach end aircraft flared stall no lift encountered during first flight set up normal landing approach leaving yourself plenty room final dont hit obstacle model overshoots lift encountered proceed characteristics 205 different conventional flat-bottomed airfoil way behaves thermal tum lift great will able notice much difference model will sky Out basis wing loading instead aerodynamics What Im looking early-moming late-evening ther mals would just soon leave take up Anyway remember way 205 re sponded eased elevator stick aft Re member fine line between slow flight mushing stall degrading glide Think back contests youve seen two models enter low thermal model skies out other falls out Often model fell out pilot attempting maximize climb weak thermal tried harder succeeded placing 205 backside its glide curve caused model mush out thermal Because fine line prefer fly thermal elevator trim lift encountered am ready start circle commence turn click two three clicks Up trim Im sure can probably fly model up through thermal find easier adjust aircraft fine line use rudder kill stall adjusting aircrafts airspeed through opening tightening circle Try believe will find better climb rate what would get attempting fly 205 up thermal continued Just add couple comments what Larry said installment Make sure wings outer panels have little washout built check hold tip panels against big mirror piece plate glass trailing edge tip should e glass little bit wing twist will prevent tip stalling allow plane stall straight aheadnot drop wing abruptly practice stalling Larry described last thing want hap pen during slow stall-type landing have wing drop suddenly hit ground usually produces cartwheel something gets broken Through trial error also found 38% CG location Meteor best Any farther back plane difficult control pitch ie tends stall 38% position plane still quite sensitive pitch tiny adjustments stabilator trim make noticeable difference glide angle Unfortunately transmitter does have click stops trims So get stab adjusted what like think best cruise position Im reluctant move stab trim lever because know will difficult find again goes launching landing thermaling Ive tried pulling some Up trim like Larry does works fine prefer maintain ing sweet spot stab setting using elevator thermals Expanded scale voltmeter problems Feb ruary column discussed using ESVM check state charge transmitter airborne Ni-Cd battery packs Wayne Lehman Lan caster PA wrote after reading column recently purchased ESVM finally peace mind about airborne pack advice local hobby dealer cycled Ni-Cds plugging ESVM As late checked progress first hour went bed understood no harm doing fact said good drain recharge now morning recharged pack evening surprise ESVM needle deflected opposite direction Strange thought meter should suddenly go bad checked controls model everything seemed normal fact Ive flying pack Disturbed about condition ESVM related story hobby dealer No never heard anything like packed up meter sent back manufacturer checked said waa okay read column can imagine perked up read start stopwatch plug ESVM stand cou ple hours watching meter go down because essential let pack discharge below 44 volts cell reversal other bad things can happen couldnt anyone have told cell reversal bad What other bad things way re-reverse Ni Cds First lets analyze Waynes ESYM jumped opposite ie downscale direc tion ESVMs special-application instruments designed read about 43 53 volts airborne packs 86 103 volts transmit ters Just regular voltmeter will go off scale right too much voltage put ESVM will go off scale left too little voltage put ESVM trying read least 43 volts 36 volts left downscale far concerned What must have happened Wayne cells pack either went dead reversed left plugged ESVM So after full recharge pack putting out about 36 volts instead nominal 48 1 2 volts per cell say nominal because freshly-charged Ni-Cd cell will measure 125 volts will rapidly fall 120 volts will stay its useful discharge So since 36 volts below ESVMs rest position needle jumped downscale left Its remarkable Waynes receiver continued work Most wont cell out Now Waynes questions reversed cell actually worse weak dead cell because putting out little voltage wrong direc tion subtracting voltage other cells recharge two will often get cell turned around proper direction Ive heard shocking reversed cell higher-thannormal voltage get turned around have never tried myself Another bad thing happens fullydischarged cells venting internal gasses can lead leakage likelihood shortened cell life among us has inadvertently left receiver transmitter switch few days Usually pack will come back charging normallybut bad thing because danger decreasing cell life Sometimes Waynes case cell refuses cooperate thing replace figure Ni-Cds minor cost hobby Id rather buy new ones take chance demolishing plane Jeff Troy Event Director Soaring 1985 86 Nats now AMAs Assis tant Director Public Relations Jeff builds beau tiful Scale Sailplanes sent tip will interest other Scale builders Jeff writes ~n56 Engine 35-45 501.z213AIpha 15 $4995 Span 46 Engine 23-25W 34 Channels 50K220Super Pacer $4295 %A ll July1987 149 I, Span 4O/4123C Engine 049-05150L2034C e High MKII $3195 -120 $149 5,d $200 ou conpit catalog ACE tan, ar available deals oda diaot add $200 Handling Faa 116Wl9thSt I11Vfl Winninocuill, MA BUMBLE VEE FLYING FUN 2 super little sport plane Bumble Vee designed 05 electric power Fast building different looking great flying Bumble Vee pure fun fl PROIUCTS INC 714 592-5144 510 E Arrow Highway San Dimas CA 91773 organization called Vintage Sailplane Association dedicated preservation flying antique Gliders national publication called Bungee Cord VSA really good source documentation vin tage Sailplanes have first-class archivist person Mr Lee Buell 13507 Brightfield Lane Hemdon VA 22071 Data available VSA members also nonmembers Builders should check Lee subjects available prices can tell wealth information hand last can document some strange birds have eager try couldnt find proof-of-scale would urge Scale fans contact Lee Jan Scott Scott Airpark Lovettsville VA 22080 get membership information wonderful orga nization Membership very inexpensive efforts quite genuine As said above membership required have access material what nice way say Thank plus receive Bungee Cord guess would too out character mention passing have signed editor Model Soaring column Bungee Cord Since Bungee Cord full-scale publica tion consider quite honor will try very hard keep interesting What means reach Level V following piece Mike Hickman Pikes Peak Soaring Societys newsletter Randy Randy Reynolds clubs newsletter editor resident hyper person Hope enjoy did quite some time now Randy has after write article club newsletter about what means feels like reach Level V League Silent Flights Sodring Ac complishment Program Ive sat down now several different occasions write task much difficult ever imag ined Its sort like trying talk about close friend has just passed away five years goal reaching Level V seemed control move made Soaring day finally reached goal swallowed left huge vacuum left goal properly place perspective need know something about LSF Program help have included copy also includes summary require ments level take moment study requirements quickly obvious start quite simple tasks progres sively increase difficulty started flying Sailplanes August 81 1 like other newcomers sport could get plane up lucky enough stumble thermal might get 10- 15-minute flight wasnt until flew first contest hooked both competition camaraderie same time humbled little knew about didnt take much see rate going sure wouldnt winning contests make long story short found out about LSF program immediately apparent tool needed program didnt have worry about first goal having to win contests would come later now con centrate requirements Level I just make couple five-minute flights learn land reasonably close spot ground Now wasnt too bad Bring Level II Now landings get touch demanding have start flying contests wait dont seem intimidating now Could possibly due Level landing practice sessions point LSF program allows follow well-thought-out series goals leading ever-improving flying skills goal close enough reasonably dedicated individual should able reach result will will start win will eventually find yourself starting work Level V voucher As have already mentioned once com pleted requirements Level V seemed though loss what should next other activities directed toward completing requirements now sud denly found myself goal What let down Well folks its taken six months now now have new goalF3B also have new enthusiasm knows what may next Lets see now next team selection 7? See field Thanks story Mikea very persuasive testimonial value LSF program deed really no reason Sailplaners should participate League Silent Flight improve flying its fun best its practicallyfree get started send name address also enclose five stamps LSF PO Box 647 Mundelein IL 60060 will get back Level voucher full descrip tion program National Soaring Societys 1987 Soar-In Contests will held around country between June 1 July 26 idea have similar contest clubs roughly same time have fun spread word about NSS Marshall Long Texas taking over Dick Crowley Soar-In Coordinator year time read AMA sanctions should set check Contest Calendar magazine Soar-In closest SOARs Scale Uprising coming up August 1 2 original dates July II 12 switched because near-conflict Nats promises biggest all-Scale Soaring event held country Contest Coor dinator Steve Moskal provided details August 1AMA Sport Scale six classes see AMA rule book August 1-2Thermal Duration six classes Ships must have flown AMA Sport Scale In/out 100-ft-diameter circle 20 landing bonus points Duration will five 10 minutes de pending weatherwith objective seven eight rounds flown two days Straight scoring will used no points Sport Scale Electric-motor Gliders will judged flown same above will no limit motor run number charges Byron Blakeslee 3134 Winnebago Dr Se dalia CO 80135 RC Aerobatics/Van Putte Continued page 51 posal have opinion other rule change proposals get off apathy write district Board member recent contest several us talking Don Lowe about what wed like see way competition among top-level national international group RC Aerobatic Pattern fliers consensus wed have everyone fly same airplane wed prevent judges knowing identity flier Wouldnt great carefully-nurtured halos would worthless everyone would have equal chance win basis flying ability alone possible consider such com petition thought kicked around few ideas about obvious place start airplane must capable performing FAI pattern well hands superior pilots thought Hobby Shack Supra Fly 1 50 Model Aviation
Edition: Model Aviation - 1987/07
Page Numbers: 48, 49, 148, 149, 150
Radio Control Soaring Byron Blakeslee Germany compete Big world championships Its going tough competition Europeans formidable F3B anyway will home turf West Germans have very strong team plus cur rent World Champ RoIf Decker Countries com peting will include Argentina Australia Bel gium Canada China Denmark Finland France East Germany Great Britain Hungary Israel Japan Netherlands New Zealand Norway Poland Spain Sweden Switzerland USA West Germany Last month talked about teams budget need spend amount money order have chance doing well maybe win ning Osnabruck Well time growing short still have some funds raise want guys concentrating contestnot worrying theres enough funding So havent sent team patch pin please sit down write check $15 both itemsor $10 patchor $5 pin alone address US F3B Soaring Team PO Box 9328 Albuquerque NM 87119 Dont forget contribution will also get entered sweepstakes lots great mer chandise prizes big prize $15 donation round trip airline ticket Germany has firmed up write March 30 contingent airline donating ticket now its still negotiations However merchandise list continues grow now cludes Airtronics Top Flite Bob Martin ACE RIC Carl Goldberg Midwest Sky High R/C MAN Six Championship radios six Andante kits Six Antares kits 36 rolls MonoKote Three Bob Cat kits 10 Talon kits three Pussycat kits Hobie Hawk 1FF charge system Six Gentle Lady kits Lazybird kit Airborne Thermal Detec tor Three subscriptions closing F3B team report team would like share part letter sent Mrs Patricia Pruss may never change world sportsmanship friendship might make difference Slope sites find fol lowing letter written Barry Kurath Portland PASS Club telling clubs experi ences Sloping last winter may typical thought youd enjoy reading what people will get some good flying got tired reading about great Slope flying Torrey Pines England Alps etc PASS got busy found some local sites must rival best Ill talk about MeKinly Ridge now some others other time McKinley Ridge runs north south about 3900 ft Gifford Pinchot National Forest Cascade Mountains prevailing winds east west almost always good lift air rises some 2500 ft flows over ridge either direction Ten us braved mean braved snow-covered logging road day glorious flying summer plan combine camp-out pylon race fun-fly slope Its bit over hour Portland combines great flying rea sonable access Thanks info photos Barry Im sure everyone looking pictures will feel bit cooler husband two bequests willthings truly believed first SOAR second F3B team wish best Dans name Ill say Winning Southern California Scale Sloping Bill Liscomb 48 Model Aviation F-I 6-Inspired Power Scale Slope Soarer Advanced GliderConcepts PSS very popular Europe now catching about model column Bill Llscomb sentthese photos two big Scale ships atTorrey PInes CA AS-W 24L istrom German Roebers kitwith glassfuselage obechi-sheeted 4-meterfoam wings Weight is91/2 lb photo AS-K 21R interesting shows dew hasformed wings during flightnone forward part chord airflow laminar German Rodel kit Span 42 meters Gryphon making pass along Oregons McKinley Ridge slope Thats 12307-ft Mt Adams background What well-dressed Slope flier wears Cascade Mountains December People areLtoR EricJackson Allan Halieck Barry Kurath whotook photos Carshad CA sent some pictures latest -scale birds writes much laminar flow get -scale Glider Check out side view wing AS-K 21 photo taken im mediately after landing conditions Torrey Pines day such clouds about 100 ft over top cliff K 21 spent about half its one-hour flight ducking out clouds Upon landing noticed con densation moisture dew wing stabexcept forward 15% Glad camera answer question build -scale ships usually put 20 40 hours per week building Because amount work already done German kits takes about same amount time build -scale beauties does build say Sagitta 600probably less latest project -scale 1890 Chanute biplane hang glider Max speed appears about 20 mph Photos follow Continued page 148 Connectors Designed anything electrical requiring quick disconnects Ideal Power Pack Connector tar electric planes cars boats Designed high vibration environment Cycled ten Thousand times electrical failure O Anderson Power Products Inc uu D50 CRISES SORRY NO PERSONAL CHECKS OR COD ORDERS Only certified checks money orders accepted Minimum arderSl000 forttiree packages 4 Powerpoles $300 per package plus $100 ship ping handling CT residents add 75% sales tax Prices subject change notice Dealer inquiries invited further information dealer prices send SASE Bus Card SERMOS RIC SNAP CONNECTORS Cedar Corners Station Box 16787 Stamford CT 06905 MINI-STRIPSPRECISION DIE-CUT Medium Garnet SAVES TIMEREPLACEMENTFine Garnet AND EFFORT $175 SANDING BELTSAssId Water Pruol TEE ALUMINUM EXTRUSION SANDING BLOCK ter RUFF-STUFF Selt-adheslee nand paper Large Tote SerVice Weal Wur Out 11 inch82- Handy Urn 22 Inch $175 BEARERRUFF e STUFF SELF ADHESIVE SHEET SANOMPER MAKE YOUR OWN SPECIAL SANDING SHAPES Eany Us$1 09 Medium Flu r Phi MINIesAw $7 COMPACT 10 inGh HACK SAW SAWS ANYTHING ANYWHERE Saw hat ragged din-cast traine cemlertahin chlp-preet pinstic Inneat handin Receding ewe ad pantahin B hinds gin accena Cute weed pinstic metal HARDENED MUSIC WIRE extra htndns3/$199 Add 20% postage Send 25 castilog Dealers & Distributors Welcomed Phone 703 273-9593 FLYLINE MODELS INC PO Roe 213A Fuirfo, Vrr5EnLo 22t31 us July1987 49 Mike Bamberg launches Gryphon flying wing directly far-off Mt Hood elevation 11235 ft Oregon buddies doing some winter Slope Soaring Ly APPLIED DESIGN CORPORATION 738 hon SI El Senunde CA 90245 SANDER madSTABLU HA RE DEE V Padded Rate curves Handy Held EasyteUse$255 Remember Folding INTERCEPTOR Ready Fly $795 U-butld Ktt$495 AIRCRAFT CC 1PANY RO Box 68132 Portland OR 97268 Classic R/CScaLAKES THE 40 Wing 15 25 Engines Phnn 206 77680671 IGLIDER VIDEO TAPES WIND SONG unchallenged open class thermal competition champion NOW 2 CONSTRUCTION VIDEO TAPES ARE AVAILABLE help insure properly construct advanced composite multichannel perfbrmance champion tapes also apply National Champion 2-meter Pixy amazing standard class Camano aid construction tiny wingeron Pivot Tape 12 105 minutes long shows foam/balsa wing construction Tape 13 64 minutes long deals fuselage construction radio installation final fit finish Tape 11 new 1987 promotional video tape shows glider kits spectacular action includes what probably the beautiful breathtaking RIG glider flying fbotage available anywhere including Windsong climbing out handlaunches Bob Dodgson shares some design philosophy made Windsong significant thermal competition glider design time 1 tape$15 deposit S/H total keep tape 2 tapes $30 deposit S/H total keep tapes 3 tapes $40 deposit S/H total keep tapes Send 2 stamps catalog WIN OSONG CAMANO 2-Meter PIXY new PIVOT PLUS NEW VIDEO TAPES specify VHS BETA 8mm format VISA & MASTER CHARGE Ok Windsong 19995 DODGSON DESIGNS Camano 15995 Pixy 14995 21230 DAMSON ROAD BOTHELL WA AC Soaring/Blakestee Continued page 49 Bill included some additional info latest projects said got AS-K 21 Harry Brooks Models England AS-W 24 Silent Flightalso England Air freight runs about $100 per kit Robers AS-W 24 very fast clean Robers also makes Discus DG-202 kitsvery high quality Robel AS-K 21 very docile very pretty air Also no problem fitting radio Power Scale Soanmg getting more popular idea build Scale Glider out jet piston-powered prototype fly slope F-16 photo Advanced Gli der Concepts PO Box 1019 Manhattan Beach CA 90266 has extra-long fiberglass fuselage wings made blue foam covered As-in plywood span 42 weighs 26 oz needs two-channel radio assembly said easy Available Welshire Hob bies $120 wnte AGC Fly 205 Larry Jolly letters readers most-requested information straight scoop flying Soaring experts Larry Jolly yes MAs Helicopter columnist eminently qualified advise us Soaring having won Nats several times well other major contests following first half article Larry wrote Pacific Soaring Association newsletter has reprinted other club newsletters because such significant piece Larry specifically discusses Eppler 205 airfoil because uses several planes kits-most notably 128-in-span Meteor 100-in Pantera though has 205 mind much what says applies just about Sailplane/airfoil combination second half will next months column Take away Larry Back 1978 Woody Blanchard received copy Dr Epplers then-new Eppler 205 air foil Woody good enough send copy coordinates friend Lee Renaud Shortly thereafter Sagitta born What signif icant about Sagitta first US kit designed emphasize moderate wing load ing high L/D ship did compete F3B well primarily designed AMA Duration model People soon realized advantage 205 gave gave flier ability cover lot ground thereby giving better chance encountering lift still yielding moderate sink rate Once lift encountered 205 responded well better flat-bottom section climbing up away altitude reached nose could dropped model would soon come step zoom across sky roses however 205 has rather peaky performance chart means airfoil performance degrades rapidly once angle attack exceeds relatively small angle either positive negative simple terms ability model equipped 205 cover ground greatly affected method pilot flies elevator flying planning fly model equipped 205 airfoil definite technique involved getting performance out Believe technique starts workshop definition Eppler 205 moderately thin medium-camber laminar-flow section Laminarflow sections designed have air passing over stay attached farther aft wing surface turbulated section get maxi mum performance wing must built true possible sharpen leading edge ra dius attempt go faster causes 205 stall lower angle attack would normally occur Some method glide-path control must included Since AMA Sailplane contests won ground must plan install some method adjust glide path model Spoilers flaps dive brakes commonly used methods adjust glide slope have used above have found have relative merits spoilers commonly used mastered give reproducible results Next just important make sure center-of-gravity proper location general thermal flying have found centerof-gravity position 38% aft leading edge yields beneficial results Now before model ever leaves shop should have smoothest wing possible working glide-path control center-of-gravity must proper location Before close workshop door almost forgot tell single greatest factor affecting stalling speed 205-equipped aircraft will wing loading means can either add wing heavy model find method remove some lead nose building finishing Sailplane pay careful attention tail surfaces Build strong also keep light pos sible Pay careful attention paint primer fuselage aft wing trailing edge Two ounces weight tail good six ounces nose yields net gain eight ounces overall increase oz per sq ft 900-sq-in model whole lot might say believe trying make early-morning landing benefit headwind makes difference much real estate youll cover Next check tailplane has 25 positive deflection reference wings center lineThis should neutral stick elevator trim level position Now off flying field master nasty old 205 Assemble model check proper radio operation essential smooth flight control surfaces return center deflected released always prefer hand-glide capable hand-launching model reasonable results its perfectly acceptable put up line immediately Regardless Im going assume hand-gliding yielded respectable flat glide out need trimming tailplane Now know thing going fly lets think about what going look first winch-launch Once off line point model wind remove thumb stick model should glide nice flat showing signs climbing diving acceler ating model behaving make 180 turn let model commence downwind models ground speed should increase may give illusion dropping nose slightly model docs show tendencies adjust elevator trim lever until settles down Note trim lever should adjusted click time should take much angular deflection tailplane create noticeable difference glide angle hope still have plenty altitude left land relaunch have safe altitude maneuver aircraft its flight path per pendicular field vision will best enable observe angle attack aircraft whilst glide model positioned flying normal cruising speed proceed gently bring nose up applying Up elevator Keep slowing model until stalls Note Up elevator gently applied aircraft should stall abruptly Ideally air craft should first begin climb slow begin mush tail down losing altitude just little tailplane deflection ward motion should halt nose should drop stall encountered aircraft exhibits tendencies should aircraft exhibits vicious tendencies try adding bit nose weight temporarily should dampen pitching acceptable limits weight helps fix nose permanently Now will know what expect land aircraft good landings start good 148 Model Aviation Pivot Plus 7500 980213 approach end aircraft flared stall no lift encountered during first flight set up normal landing approach leaving yourself plenty room final dont hit obstacle model overshoots lift encountered proceed characteristics 205 different conventional flat-bottomed airfoil way behaves thermal tum lift great will able notice much difference model will sky Out basis wing loading instead aerodynamics What Im looking early-moming late-evening ther mals would just soon leave take up Anyway remember way 205 re sponded eased elevator stick aft Re member fine line between slow flight mushing stall degrading glide Think back contests youve seen two models enter low thermal model skies out other falls out Often model fell out pilot attempting maximize climb weak thermal tried harder succeeded placing 205 backside its glide curve caused model mush out thermal Because fine line prefer fly thermal elevator trim lift encountered am ready start circle commence turn click two three clicks Up trim Im sure can probably fly model up through thermal find easier adjust aircraft fine line use rudder kill stall adjusting aircrafts airspeed through opening tightening circle Try believe will find better climb rate what would get attempting fly 205 up thermal continued Just add couple comments what Larry said installment Make sure wings outer panels have little washout built check hold tip panels against big mirror piece plate glass trailing edge tip should e glass little bit wing twist will prevent tip stalling allow plane stall straight aheadnot drop wing abruptly practice stalling Larry described last thing want hap pen during slow stall-type landing have wing drop suddenly hit ground usually produces cartwheel something gets broken Through trial error also found 38% CG location Meteor best Any farther back plane difficult control pitch ie tends stall 38% position plane still quite sensitive pitch tiny adjustments stabilator trim make noticeable difference glide angle Unfortunately transmitter does have click stops trims So get stab adjusted what like think best cruise position Im reluctant move stab trim lever because know will difficult find again goes launching landing thermaling Ive tried pulling some Up trim like Larry does works fine prefer maintain ing sweet spot stab setting using elevator thermals Expanded scale voltmeter problems Feb ruary column discussed using ESVM check state charge transmitter airborne Ni-Cd battery packs Wayne Lehman Lan caster PA wrote after reading column recently purchased ESVM finally peace mind about airborne pack advice local hobby dealer cycled Ni-Cds plugging ESVM As late checked progress first hour went bed understood no harm doing fact said good drain recharge now morning recharged pack evening surprise ESVM needle deflected opposite direction Strange thought meter should suddenly go bad checked controls model everything seemed normal fact Ive flying pack Disturbed about condition ESVM related story hobby dealer No never heard anything like packed up meter sent back manufacturer checked said waa okay read column can imagine perked up read start stopwatch plug ESVM stand cou ple hours watching meter go down because essential let pack discharge below 44 volts cell reversal other bad things can happen couldnt anyone have told cell reversal bad What other bad things way re-reverse Ni Cds First lets analyze Waynes ESYM jumped opposite ie downscale direc tion ESVMs special-application instruments designed read about 43 53 volts airborne packs 86 103 volts transmit ters Just regular voltmeter will go off scale right too much voltage put ESVM will go off scale left too little voltage put ESVM trying read least 43 volts 36 volts left downscale far concerned What must have happened Wayne cells pack either went dead reversed left plugged ESVM So after full recharge pack putting out about 36 volts instead nominal 48 1 2 volts per cell say nominal because freshly-charged Ni-Cd cell will measure 125 volts will rapidly fall 120 volts will stay its useful discharge So since 36 volts below ESVMs rest position needle jumped downscale left Its remarkable Waynes receiver continued work Most wont cell out Now Waynes questions reversed cell actually worse weak dead cell because putting out little voltage wrong direc tion subtracting voltage other cells recharge two will often get cell turned around proper direction Ive heard shocking reversed cell higher-thannormal voltage get turned around have never tried myself Another bad thing happens fullydischarged cells venting internal gasses can lead leakage likelihood shortened cell life among us has inadvertently left receiver transmitter switch few days Usually pack will come back charging normallybut bad thing because danger decreasing cell life Sometimes Waynes case cell refuses cooperate thing replace figure Ni-Cds minor cost hobby Id rather buy new ones take chance demolishing plane Jeff Troy Event Director Soaring 1985 86 Nats now AMAs Assis tant Director Public Relations Jeff builds beau tiful Scale Sailplanes sent tip will interest other Scale builders Jeff writes ~n56 Engine 35-45 501.z213AIpha 15 $4995 Span 46 Engine 23-25W 34 Channels 50K220Super Pacer $4295 %A ll July1987 149 I, Span 4O/4123C Engine 049-05150L2034C e High MKII $3195 -120 $149 5,d $200 ou conpit catalog ACE tan, ar available deals oda diaot add $200 Handling Faa 116Wl9thSt I11Vfl Winninocuill, MA BUMBLE VEE FLYING FUN 2 super little sport plane Bumble Vee designed 05 electric power Fast building different looking great flying Bumble Vee pure fun fl PROIUCTS INC 714 592-5144 510 E Arrow Highway San Dimas CA 91773 organization called Vintage Sailplane Association dedicated preservation flying antique Gliders national publication called Bungee Cord VSA really good source documentation vin tage Sailplanes have first-class archivist person Mr Lee Buell 13507 Brightfield Lane Hemdon VA 22071 Data available VSA members also nonmembers Builders should check Lee subjects available prices can tell wealth information hand last can document some strange birds have eager try couldnt find proof-of-scale would urge Scale fans contact Lee Jan Scott Scott Airpark Lovettsville VA 22080 get membership information wonderful orga nization Membership very inexpensive efforts quite genuine As said above membership required have access material what nice way say Thank plus receive Bungee Cord guess would too out character mention passing have signed editor Model Soaring column Bungee Cord Since Bungee Cord full-scale publica tion consider quite honor will try very hard keep interesting What means reach Level V following piece Mike Hickman Pikes Peak Soaring Societys newsletter Randy Randy Reynolds clubs newsletter editor resident hyper person Hope enjoy did quite some time now Randy has after write article club newsletter about what means feels like reach Level V League Silent Flights Sodring Ac complishment Program Ive sat down now several different occasions write task much difficult ever imag ined Its sort like trying talk about close friend has just passed away five years goal reaching Level V seemed control move made Soaring day finally reached goal swallowed left huge vacuum left goal properly place perspective need know something about LSF Program help have included copy also includes summary require ments level take moment study requirements quickly obvious start quite simple tasks progres sively increase difficulty started flying Sailplanes August 81 1 like other newcomers sport could get plane up lucky enough stumble thermal might get 10- 15-minute flight wasnt until flew first contest hooked both competition camaraderie same time humbled little knew about didnt take much see rate going sure wouldnt winning contests make long story short found out about LSF program immediately apparent tool needed program didnt have worry about first goal having to win contests would come later now con centrate requirements Level I just make couple five-minute flights learn land reasonably close spot ground Now wasnt too bad Bring Level II Now landings get touch demanding have start flying contests wait dont seem intimidating now Could possibly due Level landing practice sessions point LSF program allows follow well-thought-out series goals leading ever-improving flying skills goal close enough reasonably dedicated individual should able reach result will will start win will eventually find yourself starting work Level V voucher As have already mentioned once com pleted requirements Level V seemed though loss what should next other activities directed toward completing requirements now sud denly found myself goal What let down Well folks its taken six months now now have new goalF3B also have new enthusiasm knows what may next Lets see now next team selection 7? See field Thanks story Mikea very persuasive testimonial value LSF program deed really no reason Sailplaners should participate League Silent Flight improve flying its fun best its practicallyfree get started send name address also enclose five stamps LSF PO Box 647 Mundelein IL 60060 will get back Level voucher full descrip tion program National Soaring Societys 1987 Soar-In Contests will held around country between June 1 July 26 idea have similar contest clubs roughly same time have fun spread word about NSS Marshall Long Texas taking over Dick Crowley Soar-In Coordinator year time read AMA sanctions should set check Contest Calendar magazine Soar-In closest SOARs Scale Uprising coming up August 1 2 original dates July II 12 switched because near-conflict Nats promises biggest all-Scale Soaring event held country Contest Coor dinator Steve Moskal provided details August 1AMA Sport Scale six classes see AMA rule book August 1-2Thermal Duration six classes Ships must have flown AMA Sport Scale In/out 100-ft-diameter circle 20 landing bonus points Duration will five 10 minutes de pending weatherwith objective seven eight rounds flown two days Straight scoring will used no points Sport Scale Electric-motor Gliders will judged flown same above will no limit motor run number charges Byron Blakeslee 3134 Winnebago Dr Se dalia CO 80135 RC Aerobatics/Van Putte Continued page 51 posal have opinion other rule change proposals get off apathy write district Board member recent contest several us talking Don Lowe about what wed like see way competition among top-level national international group RC Aerobatic Pattern fliers consensus wed have everyone fly same airplane wed prevent judges knowing identity flier Wouldnt great carefully-nurtured halos would worthless everyone would have equal chance win basis flying ability alone possible consider such com petition thought kicked around few ideas about obvious place start airplane must capable performing FAI pattern well hands superior pilots thought Hobby Shack Supra Fly 1 50 Model Aviation