FREE FLIGHT INDOOR 4-Fr FEEDBACK past column held up John Lendermans Thrush Limited Pennyplane significant design advancement got following letter John enjoyed reading about Thrush latest issue MA correction makeyou stated wing configuration 175-inch flat span upturned tips really 165-inch flat span upturned tips second model built 025 inch dihedral tip upturned tips flew just well maybe little bit better hoping might mention propit different Others use prop say times better before What Opinion Please consider concept respond very few fliers models have excecded existing record several successive ffights same day submit applications flight Several AMA officials have discussed some feel flier should limited application per day per event reasons Reduced paperwork HQ staff homologator 2 concept degrades value records Records basically reward advances state art Successive longer flights same day same model often means two things 1 flier has developed better power combination shows models true potential 2 conditions have continued improve contest scenario event national record 1938 data presented snapshots official score sheet three times during day Contestant1030 am A2038 B2147 C1945 135 pm 2101 2207 225 1 430 pm 2259 2303 2310 Contestant C Wins contest B second third nine flights broke record CD did work properly ifight qualifies record no time actually record until homologated issue involved should AMA HQ involved issuing nine records three have strong feelings either Figure 1 Top view universal rib template ribs molded angle see text Tenny sketch side question send postcard Academy Model Aeronautics 5151 East Memorial Dr Muncie IN 47302-9252 posteani letters OK state record/day unlimited records/day Thanks help Landmark Study Gene Stubbs editor consistently high-quality newsletter Boeing Hawks published important what-if spreadsheet study rubber model performance Doug McLean active FlD did development work true tandem models author study Doug acknowledges study has limitations willing distribute copies interested anyone interested insights about Indoor model performance easy read can give good information Send business-sized self-addressed envelope 56 cents postage Doug McLean 7004S 130th St Seattle WA 98178 request Another Record Surge Except competition major meets like USIC doesnt seem have much Catapult Glider activity Bob Bienenstein has pretty well showed way Shooter series After publication Feather Shooter other fliers have building design beating him flights have homologated made using basic Feather Shooter design slightly different stab outline models around 14 g compared original 197g Standard Class Category 634 Larty Coslick 2/11/96 723 Roy White 2/18/96 Unlimited Class Category 723 Roy White 2/18/96 No-Touch Comments Despite rejection first rules proposal attempted define no-touch event several area contests have continued conduct no-touch contests rules similar defeated rule proposal Larry Coslick very familiar no-touch flying since practice site has spidery beams specialize capturing models some flights Lanys logs related Howard Henderson October Larry AMA record Pennyplane flight Cat II site did hit the bottom flag hanging ceiling model uses variable-pitch prop 175 inches diameter low pitch 27 inches high pitch 58 inches motor May 94 tan II 15 inch loop 120 launch torque 14 in-ozs time 1354 December flying 23-ft site made Easy B flight 13 28 048 ounce model climbed 18 feet altitude using 12/24 flaring prop tan II Aug 93 motor 118 inches 03 inches Figure 2 End view universal rib template Vary curvature using Speaking Practice Sites Jim Clem have different insert strips Strips can tapered variable camber Tenny sketch excellent success local YMCAs gymnasium areas Juiy 1996 131 two fliers show ducted-fan models Models/modelers unidentifiedplease contact author sometimes available during normal work hours have 20-foot usable space spider beams similar LaiTy Coslicks site mentioned above also found room used karate aerobics classes may prove ideal test flying some classes has 16-foot flat ceding zero drift after ak-conditioning turned off Since both members use workout equipment proves membership bonus Question SAM 86 seagulls always fly near sea flew near bay theyd bagels Braided Motors Braided motors have mentioned several times braided motor has preloaded reverse twists unwound motor wraps itself up very low slack us use feel get better shot minimizing bunching Scale/Manhattan/Bostonian models long-motorstick models such P-24s Federation ROGs Previous discussions dealt multi-strand motors also easy braid single loop Just cut strip same length normal motor twist single strand about 50 turns Make loop twisted strand massage tangled mess until hangs no doubling length about same distance between hooks tie normal motor Otherwise adjust number twists compensate Try itI think will like Flying Opportunities sessions listed below latest information available CDs events beginning June 1996 send schedules ASAP listings below include dates available time writing listing events regular schedule see January column Always venfy contest date phone before leaving home New JerseyLakehurst vastly expanded schedule 110 flying dates has arranged human dynamos Gary Kit Underwood details Gary Underwood 24 Kennebee Ct Bordentown NJ 08505 Tel 609 3249004 Fax 609 324-9005 E-mail 70314 1207@compuservecom IdahoMoscow Confirmation has late 1996 World Championships will held Kibbie Dome last received schedule week Aug 1-3 Standard Kibbie Dome schedule HLG Catapult glider events running 8 am 930 am day followed duration events until 8 pm Aug 4Intemational EZB event classes AMA class Flights will made six rounds event Aug 5-8-1996 World Championships Aug 5Sign practice 8 am8 pm Aug 6Practice 8 am8 pm Aug 7 Three rounds three hours Aug 8 Three rounds three hours latest schedule contact Andy Tagliafico 10039 SW Quail Post Rd Portland OR 97219 Tel 503 452-0546 New Event An interesting suggestion three concepts appearing several club newsletters lost proper credit original publication seems like week someone ttying start new contest event usually watered-down version some previous event has become too competitive always require building new type airplane guys best techniques rubber always win about something different change instance Test Trunining Prowess event can run either indoors outdoors Someone supplies airplanea Bostonian sayand competitors get take turns adjusting maximum duration airplane should built trim tabs surface adjustments nose built allow convenient shimming Contestants can make own motors batch rubber supplied someone breaks airplane hes disqualified CD removes adjustments ballast prior giving airplane next contestant say $1 get 10 minutes airplanewinner takes end day whenever airplane destroyed lost Repeat extended tries allowed eg 30 minutes $3 Twist Inch SAM 86 Speaks published report Don Reid regularly escapes Canadian winters extended sojourn Las Vegas Don told rubber lubricant called Sil Glide fairly stiff amber goo lubed couple Gollywock motors headed out dry lake check out normally winds 45 oz torque 80% assumed breaking torque 55 oz usually gets three winds before breaking strand lubed Son Gun Exceeding 45 oz generally results some bunching occasional tear motor lubed Sil-Glide wound initially 35 oz condition wound second time 48 oz no bunching Subsequent winds torques 5255 58 point broke couple strands Don says has never before used lube helped motor wind up smoothiy Sil-Glyde knots very small tight T 58 less bunching T 45 Son Gun Sil-Glide available US NAPA auto parts stores also available m sixounce 16-ounce aerosols $3 $695 US respectively spray coats evenly dries quickly Don reckons its least good tube initially purchased Al Heinnch AeroDyne US $4 four-ounce tube would appear lubricant offers either increase usable torque extended motor life Columnists note recently bought four-ounce tube Sil-Glyde local NAPA auto parts store $559 Universal Rib Template Revisited Some time back showed rib template serves adjustable pattern laminating ribs Figure 1 shows top view template various rib lengths created molding ribs angle Figure 2 shows end view fixture curved surface can adjusted various thicknesses changing inserted support strips strips can also tapered give variable camber across length wing Stan Chilton has using lower camber outboard wing several years theory seems work very well higher camber inside wing restores lift lost because inboard wing travels less distance Lets put perspective model 20-foot-diameter circle rib six inches toward outboard tip travels 5% farther a rib six inches toward inboard tip maintain exact ratio camber-tocircle-diameter wing 5% camber center section rib six inches inboard needs 525 % camber rib six inches outboard needs 475 % camber Easy B inboard camber would 1575 inches outboard camber would 1425 inches 01 inch different probably worth trouble FlD models much wider chord required difference camber between inboard outboard dihedral ribs would about 3/M-inch difference nineinch-chord wing Club LibrariesA Good Idea Strat-O Bats club Seattle Washington area has marvelous collection magazines club library Included such rare collections Air Trails beginning 1936 Model Airplane News beginning 1938 downer issues associated club library 1 librarian must dedicated individual lots space 2 Almost invariably volunteer someone centrally located 3 librarian prepared strange calls odd hours Tips various newsletter sources noted NFFS Digest What CyA cyanoacrylate glue has sitting around getting too thick thick type dont have too much left bottle can add some thin Hot Stuff to thin out enough can finish bottle late Bob Hunter Satellite City makers Hot Stuff gave tip Keep freezer until ready use first time will increase its shelf life Let come up room temperature before open Terry Thorkildsen Prop-erly Speaking Bob Eberle Field Slipstream edited David Kennedy Does anyone out use washout prop rips Mark Drela Larry Coslick Lew Gitlow talk about perhaps 30 washout tip prop blade will keep stalling high pitch angles Sounds good Anybody ever try What have results Im trying new LPP LimIted Pennyplane prop Ill let know Please channel comments through Bud Tenny can benefit Model Aviation
Edition: Model Aviation - 1996/07
Page Numbers: 131, 132
Edition: Model Aviation - 1996/07
Page Numbers: 131, 132
FREE FLIGHT INDOOR 4-Fr FEEDBACK past column held up John Lendermans Thrush Limited Pennyplane significant design advancement got following letter John enjoyed reading about Thrush latest issue MA correction makeyou stated wing configuration 175-inch flat span upturned tips really 165-inch flat span upturned tips second model built 025 inch dihedral tip upturned tips flew just well maybe little bit better hoping might mention propit different Others use prop say times better before What Opinion Please consider concept respond very few fliers models have excecded existing record several successive ffights same day submit applications flight Several AMA officials have discussed some feel flier should limited application per day per event reasons Reduced paperwork HQ staff homologator 2 concept degrades value records Records basically reward advances state art Successive longer flights same day same model often means two things 1 flier has developed better power combination shows models true potential 2 conditions have continued improve contest scenario event national record 1938 data presented snapshots official score sheet three times during day Contestant1030 am A2038 B2147 C1945 135 pm 2101 2207 225 1 430 pm 2259 2303 2310 Contestant C Wins contest B second third nine flights broke record CD did work properly ifight qualifies record no time actually record until homologated issue involved should AMA HQ involved issuing nine records three have strong feelings either Figure 1 Top view universal rib template ribs molded angle see text Tenny sketch side question send postcard Academy Model Aeronautics 5151 East Memorial Dr Muncie IN 47302-9252 posteani letters OK state record/day unlimited records/day Thanks help Landmark Study Gene Stubbs editor consistently high-quality newsletter Boeing Hawks published important what-if spreadsheet study rubber model performance Doug McLean active FlD did development work true tandem models author study Doug acknowledges study has limitations willing distribute copies interested anyone interested insights about Indoor model performance easy read can give good information Send business-sized self-addressed envelope 56 cents postage Doug McLean 7004S 130th St Seattle WA 98178 request Another Record Surge Except competition major meets like USIC doesnt seem have much Catapult Glider activity Bob Bienenstein has pretty well showed way Shooter series After publication Feather Shooter other fliers have building design beating him flights have homologated made using basic Feather Shooter design slightly different stab outline models around 14 g compared original 197g Standard Class Category 634 Larty Coslick 2/11/96 723 Roy White 2/18/96 Unlimited Class Category 723 Roy White 2/18/96 No-Touch Comments Despite rejection first rules proposal attempted define no-touch event several area contests have continued conduct no-touch contests rules similar defeated rule proposal Larry Coslick very familiar no-touch flying since practice site has spidery beams specialize capturing models some flights Lanys logs related Howard Henderson October Larry AMA record Pennyplane flight Cat II site did hit the bottom flag hanging ceiling model uses variable-pitch prop 175 inches diameter low pitch 27 inches high pitch 58 inches motor May 94 tan II 15 inch loop 120 launch torque 14 in-ozs time 1354 December flying 23-ft site made Easy B flight 13 28 048 ounce model climbed 18 feet altitude using 12/24 flaring prop tan II Aug 93 motor 118 inches 03 inches Figure 2 End view universal rib template Vary curvature using Speaking Practice Sites Jim Clem have different insert strips Strips can tapered variable camber Tenny sketch excellent success local YMCAs gymnasium areas Juiy 1996 131 two fliers show ducted-fan models Models/modelers unidentifiedplease contact author sometimes available during normal work hours have 20-foot usable space spider beams similar LaiTy Coslicks site mentioned above also found room used karate aerobics classes may prove ideal test flying some classes has 16-foot flat ceding zero drift after ak-conditioning turned off Since both members use workout equipment proves membership bonus Question SAM 86 seagulls always fly near sea flew near bay theyd bagels Braided Motors Braided motors have mentioned several times braided motor has preloaded reverse twists unwound motor wraps itself up very low slack us use feel get better shot minimizing bunching Scale/Manhattan/Bostonian models long-motorstick models such P-24s Federation ROGs Previous discussions dealt multi-strand motors also easy braid single loop Just cut strip same length normal motor twist single strand about 50 turns Make loop twisted strand massage tangled mess until hangs no doubling length about same distance between hooks tie normal motor Otherwise adjust number twists compensate Try itI think will like Flying Opportunities sessions listed below latest information available CDs events beginning June 1996 send schedules ASAP listings below include dates available time writing listing events regular schedule see January column Always venfy contest date phone before leaving home New JerseyLakehurst vastly expanded schedule 110 flying dates has arranged human dynamos Gary Kit Underwood details Gary Underwood 24 Kennebee Ct Bordentown NJ 08505 Tel 609 3249004 Fax 609 324-9005 E-mail 70314 1207@compuservecom IdahoMoscow Confirmation has late 1996 World Championships will held Kibbie Dome last received schedule week Aug 1-3 Standard Kibbie Dome schedule HLG Catapult glider events running 8 am 930 am day followed duration events until 8 pm Aug 4Intemational EZB event classes AMA class Flights will made six rounds event Aug 5-8-1996 World Championships Aug 5Sign practice 8 am8 pm Aug 6Practice 8 am8 pm Aug 7 Three rounds three hours Aug 8 Three rounds three hours latest schedule contact Andy Tagliafico 10039 SW Quail Post Rd Portland OR 97219 Tel 503 452-0546 New Event An interesting suggestion three concepts appearing several club newsletters lost proper credit original publication seems like week someone ttying start new contest event usually watered-down version some previous event has become too competitive always require building new type airplane guys best techniques rubber always win about something different change instance Test Trunining Prowess event can run either indoors outdoors Someone supplies airplanea Bostonian sayand competitors get take turns adjusting maximum duration airplane should built trim tabs surface adjustments nose built allow convenient shimming Contestants can make own motors batch rubber supplied someone breaks airplane hes disqualified CD removes adjustments ballast prior giving airplane next contestant say $1 get 10 minutes airplanewinner takes end day whenever airplane destroyed lost Repeat extended tries allowed eg 30 minutes $3 Twist Inch SAM 86 Speaks published report Don Reid regularly escapes Canadian winters extended sojourn Las Vegas Don told rubber lubricant called Sil Glide fairly stiff amber goo lubed couple Gollywock motors headed out dry lake check out normally winds 45 oz torque 80% assumed breaking torque 55 oz usually gets three winds before breaking strand lubed Son Gun Exceeding 45 oz generally results some bunching occasional tear motor lubed Sil-Glide wound initially 35 oz condition wound second time 48 oz no bunching Subsequent winds torques 5255 58 point broke couple strands Don says has never before used lube helped motor wind up smoothiy Sil-Glyde knots very small tight T 58 less bunching T 45 Son Gun Sil-Glide available US NAPA auto parts stores also available m sixounce 16-ounce aerosols $3 $695 US respectively spray coats evenly dries quickly Don reckons its least good tube initially purchased Al Heinnch AeroDyne US $4 four-ounce tube would appear lubricant offers either increase usable torque extended motor life Columnists note recently bought four-ounce tube Sil-Glyde local NAPA auto parts store $559 Universal Rib Template Revisited Some time back showed rib template serves adjustable pattern laminating ribs Figure 1 shows top view template various rib lengths created molding ribs angle Figure 2 shows end view fixture curved surface can adjusted various thicknesses changing inserted support strips strips can also tapered give variable camber across length wing Stan Chilton has using lower camber outboard wing several years theory seems work very well higher camber inside wing restores lift lost because inboard wing travels less distance Lets put perspective model 20-foot-diameter circle rib six inches toward outboard tip travels 5% farther a rib six inches toward inboard tip maintain exact ratio camber-tocircle-diameter wing 5% camber center section rib six inches inboard needs 525 % camber rib six inches outboard needs 475 % camber Easy B inboard camber would 1575 inches outboard camber would 1425 inches 01 inch different probably worth trouble FlD models much wider chord required difference camber between inboard outboard dihedral ribs would about 3/M-inch difference nineinch-chord wing Club LibrariesA Good Idea Strat-O Bats club Seattle Washington area has marvelous collection magazines club library Included such rare collections Air Trails beginning 1936 Model Airplane News beginning 1938 downer issues associated club library 1 librarian must dedicated individual lots space 2 Almost invariably volunteer someone centrally located 3 librarian prepared strange calls odd hours Tips various newsletter sources noted NFFS Digest What CyA cyanoacrylate glue has sitting around getting too thick thick type dont have too much left bottle can add some thin Hot Stuff to thin out enough can finish bottle late Bob Hunter Satellite City makers Hot Stuff gave tip Keep freezer until ready use first time will increase its shelf life Let come up room temperature before open Terry Thorkildsen Prop-erly Speaking Bob Eberle Field Slipstream edited David Kennedy Does anyone out use washout prop rips Mark Drela Larry Coslick Lew Gitlow talk about perhaps 30 washout tip prop blade will keep stalling high pitch angles Sounds good Anybody ever try What have results Im trying new LPP LimIted Pennyplane prop Ill let know Please channel comments through Bud Tenny can benefit Model Aviation
