FALSE INFO have gently reminded made couple mistakes report U S Indoor Championships September 1989 MA First Dave Linstrum tells Jim Thornberry flying RTF Guillows Jetstream Rubber Speed event instead Sleek Streak said am familiar Jetstream Dave says substantial aerodynamic differences between two Sleek Streak probably good choice Speed mod el second goof said Vie Gagliano built balloon-launched Glider Otto Curth set straight Glider built Vito Gar ofalo Prop design previous column September 89 some charts showing jug prop designs Bill Henderson major ad vantage Bills design method pass calculate can angle whieh gives prop design pitch both ends blade center part blade will have somewhat higher pitch Stated another way tip hub areas prop washed Out respect cen ter blade Some fliers feel efficient pitch distribution Ive never seen test results proving pitch distribu tion scheme best Design formulas Figure 1 shows basic can configuration used Bill derive design method Shown can having diameter D usual angled centerline prop layout side can angle derivation based computing pitch-angle differ ence PAD end prop blade same angular difference between two planes tangent can lines LI L2 Step-by-step The first step design path compute required blade angle BL given prop tip root blade seg ment formula familiar 1 Pitch angle AN BL PITCH/2 * pi * R Continued page 187 X PAD Figure 2 assembly jig setup used propeller design discussed column 76 Model Aviation Free Flight Indoor Bud Tenny Box 545 Richardson TX 75080 Airfoil curve fuselage top Richard Millers Manflattan Cabin assists stall recovery so-called torque-burner scheme adds bobbin locking pin control torque re lease rubber motor Easy B Indoor Contest Board has ruled disallow its use Figure 1 Diagram shows elements used derivation prop design equations given text months column Plenny Bates uses adjustable winding stooge both Indoor Outdoor models Plenny Bates Manhattan Cabin held se curely adjustable stooge Details stooges construction column ROG rise-off-ground launch uniqueness evident appearance models flown Also models must contain removable ounce dummy pilot usually housed enclosed cabinlike cockpit years NOFFA Dummy Flyoff won Bill Barr Jim Haught yours truly following order awards blocks wood finished simulate dummy self Rudys spouse painted some appro priate dummy facial expressions Twas lotsa fun ideal way keep favor ite event alive well alive well 25 entries logged event last June USOC bash Lawrenceville IL Should have personal passion spe cial event might want assimilate Rudys marketing concept promote such event contests Last-minute mail bag couple worthy items popped through mail chute column being readied transmittal MA s edito rial staff September issue Phoenix MAC newsletter notice after 30 years use seems Free Flight mecca Taft CA may soon history report states penal institution built vicinity thereby rendering present flying site impossi ble subsequent use However lost Apparently alter nate solution exists form Lost Hills site north Taft An investigation Doug Galbreath small group modelers began movement acquire new site almost two years ago before obvious indication Taft might day disappear Good show guys Free Flight endures As article suggests search alterna tive solutions problems should constant whether problems flying sites better ways build fly model airplanes solving prob lems everyday life second item open apology Gary Stan Buddenbohm reportedly formal manufacturer designer respectively Silly Putty DT system illustrated October 89 column Sorry about guys very innocently took information newsletter gave credit Bill Gibbons Apologies Mr Gibbons well no indication newsletter item someone other Bill originated DT system being formally marketed columnist strives give credit credit due correction certainly order rate Gary does peddle Silly Putty DT system kits both small Rubber models Hand-Launched Gliders $5 mailing address SDT Systems 5652 Meinhardt Rd Westminster CA 92683 hope free plug will somewhat make up misunderstanding recently premonition something might haywire credit line instance group returned TnCities AMA Nats stating Stan selling DT kits during meet Well guess well ends well Thats trip Ill have another chapter Zeek history next time See ya downwind FF Indoor/Tenny Continued page 76 R radius blade station being computed second step compute PAD across blade 2 PAD e hubangle tip Finally compute can angle using mula 3 ARC COS D * PAD/360)/L D diameter L e segment length blades must glued spar gle middle blade 4 Setup angle le hub e tipI/2 Novice Pennyplane prop Assume need 12-in-dia 18-in-pitch prop has two blades five inches long makes hub radius inch tip radius six inches two blade angles 1 Hub angle HA ARCTAN HA I Tip angle TA AN TA 18/2 * 31416 * 6 2550 PAD blade 2 PAD 55 can angle A9 nine-inch-diameter form 3 ARC COS A9 16 * 9 * 452A60)/5 4470 five-inch-diameter form 3 ARC COS AS 3 1416 * 5 * 452A60)/5 6670 Note can angle computed 3 gle vertical often can angle referenced horizontal plane compute traditional angle subtract result obtained 3 900 setup angle either blade 4 Setup angle 25512 setup angle must used center blade 25 outboard hub ra dius inch 35-in radius Figure 2 shows assembly setup torque burner lot rhetoric con cern has happened 1989 over gadget called torque burner basic concept intro duced Louis Garami Thirties Dick Obarski perfected developed idea workable hardware last couple years Photo 1 shows required hardware bobbin middle motor flexible pin side motor stick does work wound motor hooked up normally bobbin placed over pin front part motor un winds As motor unwinds bobbin moves back until disengages pin re leases torque stored back part mo tor causing model climb again Like torque- altitude-controlling devices December 1989 187 18/2 * 31416 * 1 7070 U Stand Oft Extra 230 Kits Scale Now Available Three Sizes 113 Scale Kit $22995plusslsshssng 300/o Scale Kit 95p1us 515 shipping 114 Scale Kit SBplusslossPpns Also Available Weeks Special plus $15 sp Cast VISA Certified Check RIC EXTRAS 712-943-4102 RR1 Box 28B Sergeant Bluff IA 51054 definite art reliable application Dick seems have reached point Easy B did very well contests permitted flown torque burner allowed Easy B USIC Nats after respec tive CDs decided acted brace suggestion Don Lindley Contest Board Coordinator Easy B contestants US Indoor Championships polled opinions regarding use torque burner Easy B models results follows Eleven opinions favor allowing torque burner use Easy B Two fliers expressed dont care attitude Two fliers favored allowing TB use sec ond gadget-free Easy B class established Twenty-seven contestants opposed torque burner use Easy B Canada has adopted US Indoor rules have no input US rules development similar poll strongly supported having two Easy B classes unlimited class limited class Bud did mention Indoor Contest Board has voted approved rules interpretationeffective January 1 1990which disallows torque burners Easy B re ported October 89 edition Compe tition Newsletter page 131 [although effec tivity date erroneously listed immediately since corrected Novem ber CN RMcM novel Manhattan Cabin chal lenges event use required minimum-cross-section box benign man ner beneficial manner possible Rich ard Miller apparently has managed cross over beneficial Blue Fin design see photo view can see airfoil shape built top fuselage have seen model fly several times has very repeatable beneficial response dur ing climb time other models would stall drop model hesitates almost hoversbefore resuming climb Rich ard has another model built same plan ex cept fuselage box oriented vertically instead horizontally model flies much better visible photo tip winglets may also contribute very benign stall char acteristics ELECTRIC SEMI-SCALE Radio Control Sport/Trainer Wins span $7 3/4 LengtS 37 1/2 5ee Local Dealer PAUL K GUILLOW INC WAKEFIELD MA 01880 MIAMA #4 Feb 17-18 1990 Cat II Coast Guard Hangar MIAMA #5 Mar 17-18 1990 MacDill AFB Tampa FL April TBA Miama Proxy Pistachio Inter-Gnats Miami Dade South College MIAMA #6 MacDill AFB Tampa FL GeorgiaAtlanta area Contact John Bar ker phone 1-404/436-99 12 Iowa Kansas models A-in threaded nipples have filled telescoping tubing soldered place Inside filler tubing small plug tends center wood pegs Another photo shows PIe finys Manhattan Cabin stooge use side stooge set fuselage approximately centered other screwed inward hold mod el out release Note under model some thin pads used support fu selage convenient winding position Flying opportunities list has updated schedules announced whenever possible CDs Now time send solid schedules have otherwise let know ap proximate time frame plan activity California California Connecticut Santa Ana Santa Ana han gar being refurbished availability will limited uncertain first weekend month will sanctioned just case contact Curt Ste vens 25108 Marguerite Park way Mission Viejo CA 92692 phone 1-714/240-8433 about particular session San Diego Monthly sessions Cat Howard Haupt 3860 Ec ochee Ave San Diego CA 92117 Glastonbury George Armstead 89 Harvest Lane Glastonbury CT 06037 ConnecticutWilton Roger Kleinert 17 Gar diner St Darien CT 06820 phone 1-203/655-1585 Florida Versatile stooge September 89 column gave data compiled Plenny Bates wood vs aluminum rear rubber pegs Scale Manhattan Bostonian models rest story special winding stooge Plenny uses both Indoor Outdoor models photo shows cioseLup adjtistments adapt stooge Miami MIAMA indoor sea son started Cat II contest St Pete/Clearwater Airport followed MIAMA Annual Awards Dinner Contact Dr John Martin 2180 Tigertail Ave Miami FL 33133 phone 1-305/858-6363 info confirmation following MIAMA #2 Oct 21-22 1989 MacDill AFB Cat Record Trials Dade County Youth Fair Nov 11 1989 MIAMA #3 Dec 30 1989Jan 1 1990 King Orange door Meet Delta Airlines Hangar Tampa FL Kentucky Cedar Rapids Contact Paul Mellrath 1524 48th St NE Ce dar Rapids IA 52402 phone 1319/393-4677 Topeka The following sessions have scheduled TOPMAC Club Nov 12 1989 Fun Fly Club Record Trials Mini Con test Nov 19 1989 Indoor Contest Beatrice site 27-ft events TBA Nov 26 1989 Fun Fly Club Record Trials Mini Con test Dec 10 1989 Fun Fly Club Record Trials Mini Con test Louisville Sessions have held Kentucky Air Na tional Guard Hangar Louis ville Contact Burr Stanton 9210 Darley Dr Louisville KY 40241 further details MassachusettsCambridge Ray Harlan 15 Happy Hollow Rd Wayland MA 01778 phone 1-617/3584013 New JerseyGlassboro Doug Barber 146 Stratton House Maple Shade NJ 08052 phone 1-609/2355318 New YorkChappaqua Art Maiden 1914/760-3280 1-914/769-2644 New YorkNYC Contact Ed Whitten PO Box 176 Wall St Station New York NY 10005 phone 12 12/785-5327 info about possible flying Columbia Uni versity New YorkQueens Contact Bob Bender 1516/248-5118 OklahomaOklahoma City Jim Belson 4933 NW 29th Oklahoma City OK 73129 phone 1-405/9461093 WashingtonSeattle Indoor season planned Contact Ed Lamb 15911 SE 42nd P1 Bellevue WA 98006 SAFE FLYING IS NO ACCIDENT 188 Model Aviation
Edition: Model Aviation - 1989/12
Page Numbers: 76, 187, 188
FALSE INFO have gently reminded made couple mistakes report U S Indoor Championships September 1989 MA First Dave Linstrum tells Jim Thornberry flying RTF Guillows Jetstream Rubber Speed event instead Sleek Streak said am familiar Jetstream Dave says substantial aerodynamic differences between two Sleek Streak probably good choice Speed mod el second goof said Vie Gagliano built balloon-launched Glider Otto Curth set straight Glider built Vito Gar ofalo Prop design previous column September 89 some charts showing jug prop designs Bill Henderson major ad vantage Bills design method pass calculate can angle whieh gives prop design pitch both ends blade center part blade will have somewhat higher pitch Stated another way tip hub areas prop washed Out respect cen ter blade Some fliers feel efficient pitch distribution Ive never seen test results proving pitch distribu tion scheme best Design formulas Figure 1 shows basic can configuration used Bill derive design method Shown can having diameter D usual angled centerline prop layout side can angle derivation based computing pitch-angle differ ence PAD end prop blade same angular difference between two planes tangent can lines LI L2 Step-by-step The first step design path compute required blade angle BL given prop tip root blade seg ment formula familiar 1 Pitch angle AN BL PITCH/2 * pi * R Continued page 187 X PAD Figure 2 assembly jig setup used propeller design discussed column 76 Model Aviation Free Flight Indoor Bud Tenny Box 545 Richardson TX 75080 Airfoil curve fuselage top Richard Millers Manflattan Cabin assists stall recovery so-called torque-burner scheme adds bobbin locking pin control torque re lease rubber motor Easy B Indoor Contest Board has ruled disallow its use Figure 1 Diagram shows elements used derivation prop design equations given text months column Plenny Bates uses adjustable winding stooge both Indoor Outdoor models Plenny Bates Manhattan Cabin held se curely adjustable stooge Details stooges construction column ROG rise-off-ground launch uniqueness evident appearance models flown Also models must contain removable ounce dummy pilot usually housed enclosed cabinlike cockpit years NOFFA Dummy Flyoff won Bill Barr Jim Haught yours truly following order awards blocks wood finished simulate dummy self Rudys spouse painted some appro priate dummy facial expressions Twas lotsa fun ideal way keep favor ite event alive well alive well 25 entries logged event last June USOC bash Lawrenceville IL Should have personal passion spe cial event might want assimilate Rudys marketing concept promote such event contests Last-minute mail bag couple worthy items popped through mail chute column being readied transmittal MA s edito rial staff September issue Phoenix MAC newsletter notice after 30 years use seems Free Flight mecca Taft CA may soon history report states penal institution built vicinity thereby rendering present flying site impossi ble subsequent use However lost Apparently alter nate solution exists form Lost Hills site north Taft An investigation Doug Galbreath small group modelers began movement acquire new site almost two years ago before obvious indication Taft might day disappear Good show guys Free Flight endures As article suggests search alterna tive solutions problems should constant whether problems flying sites better ways build fly model airplanes solving prob lems everyday life second item open apology Gary Stan Buddenbohm reportedly formal manufacturer designer respectively Silly Putty DT system illustrated October 89 column Sorry about guys very innocently took information newsletter gave credit Bill Gibbons Apologies Mr Gibbons well no indication newsletter item someone other Bill originated DT system being formally marketed columnist strives give credit credit due correction certainly order rate Gary does peddle Silly Putty DT system kits both small Rubber models Hand-Launched Gliders $5 mailing address SDT Systems 5652 Meinhardt Rd Westminster CA 92683 hope free plug will somewhat make up misunderstanding recently premonition something might haywire credit line instance group returned TnCities AMA Nats stating Stan selling DT kits during meet Well guess well ends well Thats trip Ill have another chapter Zeek history next time See ya downwind FF Indoor/Tenny Continued page 76 R radius blade station being computed second step compute PAD across blade 2 PAD e hubangle tip Finally compute can angle using mula 3 ARC COS D * PAD/360)/L D diameter L e segment length blades must glued spar gle middle blade 4 Setup angle le hub e tipI/2 Novice Pennyplane prop Assume need 12-in-dia 18-in-pitch prop has two blades five inches long makes hub radius inch tip radius six inches two blade angles 1 Hub angle HA ARCTAN HA I Tip angle TA AN TA 18/2 * 31416 * 6 2550 PAD blade 2 PAD 55 can angle A9 nine-inch-diameter form 3 ARC COS A9 16 * 9 * 452A60)/5 4470 five-inch-diameter form 3 ARC COS AS 3 1416 * 5 * 452A60)/5 6670 Note can angle computed 3 gle vertical often can angle referenced horizontal plane compute traditional angle subtract result obtained 3 900 setup angle either blade 4 Setup angle 25512 setup angle must used center blade 25 outboard hub ra dius inch 35-in radius Figure 2 shows assembly setup torque burner lot rhetoric con cern has happened 1989 over gadget called torque burner basic concept intro duced Louis Garami Thirties Dick Obarski perfected developed idea workable hardware last couple years Photo 1 shows required hardware bobbin middle motor flexible pin side motor stick does work wound motor hooked up normally bobbin placed over pin front part motor un winds As motor unwinds bobbin moves back until disengages pin re leases torque stored back part mo tor causing model climb again Like torque- altitude-controlling devices December 1989 187 18/2 * 31416 * 1 7070 U Stand Oft Extra 230 Kits Scale Now Available Three Sizes 113 Scale Kit $22995plusslsshssng 300/o Scale Kit 95p1us 515 shipping 114 Scale Kit SBplusslossPpns Also Available Weeks Special plus $15 sp Cast VISA Certified Check RIC EXTRAS 712-943-4102 RR1 Box 28B Sergeant Bluff IA 51054 definite art reliable application Dick seems have reached point Easy B did very well contests permitted flown torque burner allowed Easy B USIC Nats after respec tive CDs decided acted brace suggestion Don Lindley Contest Board Coordinator Easy B contestants US Indoor Championships polled opinions regarding use torque burner Easy B models results follows Eleven opinions favor allowing torque burner use Easy B Two fliers expressed dont care attitude Two fliers favored allowing TB use sec ond gadget-free Easy B class established Twenty-seven contestants opposed torque burner use Easy B Canada has adopted US Indoor rules have no input US rules development similar poll strongly supported having two Easy B classes unlimited class limited class Bud did mention Indoor Contest Board has voted approved rules interpretationeffective January 1 1990which disallows torque burners Easy B re ported October 89 edition Compe tition Newsletter page 131 [although effec tivity date erroneously listed immediately since corrected Novem ber CN RMcM novel Manhattan Cabin chal lenges event use required minimum-cross-section box benign man ner beneficial manner possible Rich ard Miller apparently has managed cross over beneficial Blue Fin design see photo view can see airfoil shape built top fuselage have seen model fly several times has very repeatable beneficial response dur ing climb time other models would stall drop model hesitates almost hoversbefore resuming climb Rich ard has another model built same plan ex cept fuselage box oriented vertically instead horizontally model flies much better visible photo tip winglets may also contribute very benign stall char acteristics ELECTRIC SEMI-SCALE Radio Control Sport/Trainer Wins span $7 3/4 LengtS 37 1/2 5ee Local Dealer PAUL K GUILLOW INC WAKEFIELD MA 01880 MIAMA #4 Feb 17-18 1990 Cat II Coast Guard Hangar MIAMA #5 Mar 17-18 1990 MacDill AFB Tampa FL April TBA Miama Proxy Pistachio Inter-Gnats Miami Dade South College MIAMA #6 MacDill AFB Tampa FL GeorgiaAtlanta area Contact John Bar ker phone 1-404/436-99 12 Iowa Kansas models A-in threaded nipples have filled telescoping tubing soldered place Inside filler tubing small plug tends center wood pegs Another photo shows PIe finys Manhattan Cabin stooge use side stooge set fuselage approximately centered other screwed inward hold mod el out release Note under model some thin pads used support fu selage convenient winding position Flying opportunities list has updated schedules announced whenever possible CDs Now time send solid schedules have otherwise let know ap proximate time frame plan activity California California Connecticut Santa Ana Santa Ana han gar being refurbished availability will limited uncertain first weekend month will sanctioned just case contact Curt Ste vens 25108 Marguerite Park way Mission Viejo CA 92692 phone 1-714/240-8433 about particular session San Diego Monthly sessions Cat Howard Haupt 3860 Ec ochee Ave San Diego CA 92117 Glastonbury George Armstead 89 Harvest Lane Glastonbury CT 06037 ConnecticutWilton Roger Kleinert 17 Gar diner St Darien CT 06820 phone 1-203/655-1585 Florida Versatile stooge September 89 column gave data compiled Plenny Bates wood vs aluminum rear rubber pegs Scale Manhattan Bostonian models rest story special winding stooge Plenny uses both Indoor Outdoor models photo shows cioseLup adjtistments adapt stooge Miami MIAMA indoor sea son started Cat II contest St Pete/Clearwater Airport followed MIAMA Annual Awards Dinner Contact Dr John Martin 2180 Tigertail Ave Miami FL 33133 phone 1-305/858-6363 info confirmation following MIAMA #2 Oct 21-22 1989 MacDill AFB Cat Record Trials Dade County Youth Fair Nov 11 1989 MIAMA #3 Dec 30 1989Jan 1 1990 King Orange door Meet Delta Airlines Hangar Tampa FL Kentucky Cedar Rapids Contact Paul Mellrath 1524 48th St NE Ce dar Rapids IA 52402 phone 1319/393-4677 Topeka The following sessions have scheduled TOPMAC Club Nov 12 1989 Fun Fly Club Record Trials Mini Con test Nov 19 1989 Indoor Contest Beatrice site 27-ft events TBA Nov 26 1989 Fun Fly Club Record Trials Mini Con test Dec 10 1989 Fun Fly Club Record Trials Mini Con test Louisville Sessions have held Kentucky Air Na tional Guard Hangar Louis ville Contact Burr Stanton 9210 Darley Dr Louisville KY 40241 further details MassachusettsCambridge Ray Harlan 15 Happy Hollow Rd Wayland MA 01778 phone 1-617/3584013 New JerseyGlassboro Doug Barber 146 Stratton House Maple Shade NJ 08052 phone 1-609/2355318 New YorkChappaqua Art Maiden 1914/760-3280 1-914/769-2644 New YorkNYC Contact Ed Whitten PO Box 176 Wall St Station New York NY 10005 phone 12 12/785-5327 info about possible flying Columbia Uni versity New YorkQueens Contact Bob Bender 1516/248-5118 OklahomaOklahoma City Jim Belson 4933 NW 29th Oklahoma City OK 73129 phone 1-405/9461093 WashingtonSeattle Indoor season planned Contact Ed Lamb 15911 SE 42nd P1 Bellevue WA 98006 SAFE FLYING IS NO ACCIDENT 188 Model Aviation
Edition: Model Aviation - 1989/12
Page Numbers: 76, 187, 188
FALSE INFO have gently reminded made couple mistakes report U S Indoor Championships September 1989 MA First Dave Linstrum tells Jim Thornberry flying RTF Guillows Jetstream Rubber Speed event instead Sleek Streak said am familiar Jetstream Dave says substantial aerodynamic differences between two Sleek Streak probably good choice Speed mod el second goof said Vie Gagliano built balloon-launched Glider Otto Curth set straight Glider built Vito Gar ofalo Prop design previous column September 89 some charts showing jug prop designs Bill Henderson major ad vantage Bills design method pass calculate can angle whieh gives prop design pitch both ends blade center part blade will have somewhat higher pitch Stated another way tip hub areas prop washed Out respect cen ter blade Some fliers feel efficient pitch distribution Ive never seen test results proving pitch distribu tion scheme best Design formulas Figure 1 shows basic can configuration used Bill derive design method Shown can having diameter D usual angled centerline prop layout side can angle derivation based computing pitch-angle differ ence PAD end prop blade same angular difference between two planes tangent can lines LI L2 Step-by-step The first step design path compute required blade angle BL given prop tip root blade seg ment formula familiar 1 Pitch angle AN BL PITCH/2 * pi * R Continued page 187 X PAD Figure 2 assembly jig setup used propeller design discussed column 76 Model Aviation Free Flight Indoor Bud Tenny Box 545 Richardson TX 75080 Airfoil curve fuselage top Richard Millers Manflattan Cabin assists stall recovery so-called torque-burner scheme adds bobbin locking pin control torque re lease rubber motor Easy B Indoor Contest Board has ruled disallow its use Figure 1 Diagram shows elements used derivation prop design equations given text months column Plenny Bates uses adjustable winding stooge both Indoor Outdoor models Plenny Bates Manhattan Cabin held se curely adjustable stooge Details stooges construction column ROG rise-off-ground launch uniqueness evident appearance models flown Also models must contain removable ounce dummy pilot usually housed enclosed cabinlike cockpit years NOFFA Dummy Flyoff won Bill Barr Jim Haught yours truly following order awards blocks wood finished simulate dummy self Rudys spouse painted some appro priate dummy facial expressions Twas lotsa fun ideal way keep favor ite event alive well alive well 25 entries logged event last June USOC bash Lawrenceville IL Should have personal passion spe cial event might want assimilate Rudys marketing concept promote such event contests Last-minute mail bag couple worthy items popped through mail chute column being readied transmittal MA s edito rial staff September issue Phoenix MAC newsletter notice after 30 years use seems Free Flight mecca Taft CA may soon history report states penal institution built vicinity thereby rendering present flying site impossi ble subsequent use However lost Apparently alter nate solution exists form Lost Hills site north Taft An investigation Doug Galbreath small group modelers began movement acquire new site almost two years ago before obvious indication Taft might day disappear Good show guys Free Flight endures As article suggests search alterna tive solutions problems should constant whether problems flying sites better ways build fly model airplanes solving prob lems everyday life second item open apology Gary Stan Buddenbohm reportedly formal manufacturer designer respectively Silly Putty DT system illustrated October 89 column Sorry about guys very innocently took information newsletter gave credit Bill Gibbons Apologies Mr Gibbons well no indication newsletter item someone other Bill originated DT system being formally marketed columnist strives give credit credit due correction certainly order rate Gary does peddle Silly Putty DT system kits both small Rubber models Hand-Launched Gliders $5 mailing address SDT Systems 5652 Meinhardt Rd Westminster CA 92683 hope free plug will somewhat make up misunderstanding recently premonition something might haywire credit line instance group returned TnCities AMA Nats stating Stan selling DT kits during meet Well guess well ends well Thats trip Ill have another chapter Zeek history next time See ya downwind FF Indoor/Tenny Continued page 76 R radius blade station being computed second step compute PAD across blade 2 PAD e hubangle tip Finally compute can angle using mula 3 ARC COS D * PAD/360)/L D diameter L e segment length blades must glued spar gle middle blade 4 Setup angle le hub e tipI/2 Novice Pennyplane prop Assume need 12-in-dia 18-in-pitch prop has two blades five inches long makes hub radius inch tip radius six inches two blade angles 1 Hub angle HA ARCTAN HA I Tip angle TA AN TA 18/2 * 31416 * 6 2550 PAD blade 2 PAD 55 can angle A9 nine-inch-diameter form 3 ARC COS A9 16 * 9 * 452A60)/5 4470 five-inch-diameter form 3 ARC COS AS 3 1416 * 5 * 452A60)/5 6670 Note can angle computed 3 gle vertical often can angle referenced horizontal plane compute traditional angle subtract result obtained 3 900 setup angle either blade 4 Setup angle 25512 setup angle must used center blade 25 outboard hub ra dius inch 35-in radius Figure 2 shows assembly setup torque burner lot rhetoric con cern has happened 1989 over gadget called torque burner basic concept intro duced Louis Garami Thirties Dick Obarski perfected developed idea workable hardware last couple years Photo 1 shows required hardware bobbin middle motor flexible pin side motor stick does work wound motor hooked up normally bobbin placed over pin front part motor un winds As motor unwinds bobbin moves back until disengages pin re leases torque stored back part mo tor causing model climb again Like torque- altitude-controlling devices December 1989 187 18/2 * 31416 * 1 7070 U Stand Oft Extra 230 Kits Scale Now Available Three Sizes 113 Scale Kit $22995plusslsshssng 300/o Scale Kit 95p1us 515 shipping 114 Scale Kit SBplusslossPpns Also Available Weeks Special plus $15 sp Cast VISA Certified Check RIC EXTRAS 712-943-4102 RR1 Box 28B Sergeant Bluff IA 51054 definite art reliable application Dick seems have reached point Easy B did very well contests permitted flown torque burner allowed Easy B USIC Nats after respec tive CDs decided acted brace suggestion Don Lindley Contest Board Coordinator Easy B contestants US Indoor Championships polled opinions regarding use torque burner Easy B models results follows Eleven opinions favor allowing torque burner use Easy B Two fliers expressed dont care attitude Two fliers favored allowing TB use sec ond gadget-free Easy B class established Twenty-seven contestants opposed torque burner use Easy B Canada has adopted US Indoor rules have no input US rules development similar poll strongly supported having two Easy B classes unlimited class limited class Bud did mention Indoor Contest Board has voted approved rules interpretationeffective January 1 1990which disallows torque burners Easy B re ported October 89 edition Compe tition Newsletter page 131 [although effec tivity date erroneously listed immediately since corrected Novem ber CN RMcM novel Manhattan Cabin chal lenges event use required minimum-cross-section box benign man ner beneficial manner possible Rich ard Miller apparently has managed cross over beneficial Blue Fin design see photo view can see airfoil shape built top fuselage have seen model fly several times has very repeatable beneficial response dur ing climb time other models would stall drop model hesitates almost hoversbefore resuming climb Rich ard has another model built same plan ex cept fuselage box oriented vertically instead horizontally model flies much better visible photo tip winglets may also contribute very benign stall char acteristics ELECTRIC SEMI-SCALE Radio Control Sport/Trainer Wins span $7 3/4 LengtS 37 1/2 5ee Local Dealer PAUL K GUILLOW INC WAKEFIELD MA 01880 MIAMA #4 Feb 17-18 1990 Cat II Coast Guard Hangar MIAMA #5 Mar 17-18 1990 MacDill AFB Tampa FL April TBA Miama Proxy Pistachio Inter-Gnats Miami Dade South College MIAMA #6 MacDill AFB Tampa FL GeorgiaAtlanta area Contact John Bar ker phone 1-404/436-99 12 Iowa Kansas models A-in threaded nipples have filled telescoping tubing soldered place Inside filler tubing small plug tends center wood pegs Another photo shows PIe finys Manhattan Cabin stooge use side stooge set fuselage approximately centered other screwed inward hold mod el out release Note under model some thin pads used support fu selage convenient winding position Flying opportunities list has updated schedules announced whenever possible CDs Now time send solid schedules have otherwise let know ap proximate time frame plan activity California California Connecticut Santa Ana Santa Ana han gar being refurbished availability will limited uncertain first weekend month will sanctioned just case contact Curt Ste vens 25108 Marguerite Park way Mission Viejo CA 92692 phone 1-714/240-8433 about particular session San Diego Monthly sessions Cat Howard Haupt 3860 Ec ochee Ave San Diego CA 92117 Glastonbury George Armstead 89 Harvest Lane Glastonbury CT 06037 ConnecticutWilton Roger Kleinert 17 Gar diner St Darien CT 06820 phone 1-203/655-1585 Florida Versatile stooge September 89 column gave data compiled Plenny Bates wood vs aluminum rear rubber pegs Scale Manhattan Bostonian models rest story special winding stooge Plenny uses both Indoor Outdoor models photo shows cioseLup adjtistments adapt stooge Miami MIAMA indoor sea son started Cat II contest St Pete/Clearwater Airport followed MIAMA Annual Awards Dinner Contact Dr John Martin 2180 Tigertail Ave Miami FL 33133 phone 1-305/858-6363 info confirmation following MIAMA #2 Oct 21-22 1989 MacDill AFB Cat Record Trials Dade County Youth Fair Nov 11 1989 MIAMA #3 Dec 30 1989Jan 1 1990 King Orange door Meet Delta Airlines Hangar Tampa FL Kentucky Cedar Rapids Contact Paul Mellrath 1524 48th St NE Ce dar Rapids IA 52402 phone 1319/393-4677 Topeka The following sessions have scheduled TOPMAC Club Nov 12 1989 Fun Fly Club Record Trials Mini Con test Nov 19 1989 Indoor Contest Beatrice site 27-ft events TBA Nov 26 1989 Fun Fly Club Record Trials Mini Con test Dec 10 1989 Fun Fly Club Record Trials Mini Con test Louisville Sessions have held Kentucky Air Na tional Guard Hangar Louis ville Contact Burr Stanton 9210 Darley Dr Louisville KY 40241 further details MassachusettsCambridge Ray Harlan 15 Happy Hollow Rd Wayland MA 01778 phone 1-617/3584013 New JerseyGlassboro Doug Barber 146 Stratton House Maple Shade NJ 08052 phone 1-609/2355318 New YorkChappaqua Art Maiden 1914/760-3280 1-914/769-2644 New YorkNYC Contact Ed Whitten PO Box 176 Wall St Station New York NY 10005 phone 12 12/785-5327 info about possible flying Columbia Uni versity New YorkQueens Contact Bob Bender 1516/248-5118 OklahomaOklahoma City Jim Belson 4933 NW 29th Oklahoma City OK 73129 phone 1-405/9461093 WashingtonSeattle Indoor season planned Contact Ed Lamb 15911 SE 42nd P1 Bellevue WA 98006 SAFE FLYING IS NO ACCIDENT 188 Model Aviation