BIG SHOW TIME AGAIN 1991 Us Indoor Championships will held John son City Tennessee June 6 through 9 1991 sponsored again National Free Flight Society No details presently available can get entry blanks available Just send business-sized SASE Tony Italiano 1655 Revere Rd Brookfield WI 53005 bag bag January 1991 column raised warning about certain plas tic rubber storage bags topic has gen erated comments other topic ever presented have received ques tions suggestions reports bad rubber letters skeptic personally has lost no rubber Roy Stewart asked about disposable plastic rolls gro cery store Tom Matterfis suggested using aluminum foil bags held together double-sided tape broad range infor mation came Boyd Felstead summa rizing reports several international fliers Another suggested source pleated sandwich bag very lightweight plas tic available grocery store personal experience have found couple different types plastic bags holding deteriorated rubber including sealable bag piece formerly prime Pirelli appeared burned crisp wherever touched plastic also found other bags rubber seemed OK bottom line ualess have chemist buddy access gas chroma tograph cant sure bags safe Although vinyl chloride has strongly implicated causative agent should assumed other ma terial might outgassing plastic harmless Jerry Bockius insists rare chemicals disasterol infernalon may also involved what us ing seems safe keep using long certain can keep getting ex actly same material As myself Ive switched 100% glassine envelopes oven bags major downer two fold takes lot time individually move motors raw rubber strip new individually labelled containers whatever used Also glassine envelopes really intended store thin stacks stamps rather glob rubber strip Conse quently store less gracefully tend spill motors out unless carefully han dled answer keeping envelopes closed appears solved using pressure-sensitive self adhesive paper la bel strips use Avery #S828 labels cut halO keep lube off label makes reusable latch works very well Flying Opportunities following list ings contest dates presently hand CDs please fill dates June 1991 beyond California Los Angeles area Monthly sessions 60-ft downtown LA Ar mory Stadium Way Contact Ken John son 16728 Burmuda Granada Hills CA 91344 Tel 818 368-0448 California San Diego Monthly sessions Cat Howard Haupt 3860 Ecochee Ave San Diego CA 92117 Connecticut Glastonbury Indoor flying Glastonbury has cancelled until further notice ConnecticutNorwich Flying session Apr 27 1991 Jerry Bockius 48 Division St Norwich CT 06360 Tel 203 887-5879 Florida Miami Dr John Martin 2180 Ti gertail Ave Miami FL 33133 Tel 305 858-6363 Last MIAMA No6 seasonMay 18-19 1991 McDill AFB Idaho Moscow has another Kibbie Dome session tentatively scheduled Au gust 8 through 11 1991 Andy Tagliafico 650-B Taybin Rd NW Salem OR 97304 Tel 503 371-0492 May 1991 55 Free FMt Indoor Bud Tenny lox 545 Rldardson TX 75080 Bud Tenny rescues model air intake aid adjustable-height platform Swiss filer Rene Butty uses boron spiral-wrapped balsa build rigid motor sticks Continued page 120 Side view Stan Chiltons prop pitch checker showing radius adjustment built-in protractor allows Stan measure pitch station along blade 74 F t' e d /-OO--6a/t CL11 /-906-g63- /225 Mail Orders Ad 1 Per Order 9ct$2OO~ee%4OOO4 Offer Good Until 4/30/91Offer Good Until 4/30/91Offer Good Until 6/1/91 R/C SPORT MODELSA/C 114 SCALE KETS ~rgr # ~ kwLow Wing Spot 9 XW8NMOd/ OrWhLpn TBner GOS.......S42S9 w# SweatLow Wlt A*rObt A~o 654 t : *. dAd i 04* QkButt SosRats & Hw~er ~r 4# . .. .. . it Aup CA TA MenoflIns* ML 495*e WSA l6T A A T Oltn. SI.SI. lFssoI 3I/S431255 41/8 4 601255 jRF500j~60-601575 RFSOO65/3260121675 607507045/320455411575 LA 50560 44345*1 3145 v01 LET US BUILD YOUR NEXT R/O AIR CRAFT WE WILL BUILD ANY AIR CRAFT INLUDING GIANT SCALE IN THE BONES OR READY TO FLY PROMPT DELIVERY NO DEPOSIT REQUIRED BYRON KITS WELCOME BUILT TO FLY CALL FOR PRICE QUOTE FLIGHT LINE Custom Bulit RC Aircraft 609 391-1855 FF Indoor/Tenny Continued page 55 Illinois Chicago area year-round weekly sessions 25-ft gym College DuPage Glen Ellyn IL Currently held Wednes day evenings Don Lindley 420 Tupelo Nap erville IL 60540 Tel 708 355-9674 Kansas Topeka Class AAA Cat II Kan sas Indoor State Championship Whiting Field House Topeka KS April 20 1991 Jack Koehlar 3425 SW Arrowhead Rd Topeka KS 66614-3485 Tel 913 272-8439 Kentucky Louisville Due site renova tions access currently intermittent Con tact Burr Stanton 9210 Darley Dr Louis ville KY 40241 Tel 502 425-1915 period ically information Tennessee Johnson City 1991 USIC June 6-9 1991 Tony Italiano 1655 Revere Rd Brookfield WI 53005 Washington State Seattle Area Cat II Idoor meet Naval Armory April 27 1991 Ed Lamb 15911 SE 42nd P1 Belle vue WA 98006 Tel 206 747-7806 TAN LOADING have heard said wind Tan rubber too hard kills motor oaly good four flights Dont believe Once twice have apparently overstressed Tan find apparently recovered next day Im sure really overstressed rubber simply lost track what ing know motor thought dead came life again possible wind Tan inappropriately also very easy fooled unusual torque curve Heres case history piece Tan rubber torque values launch torque New 233-in loop x 096 oz 1 Break-in wind 1790 turns 06 oz motor elongated 24 permanent change 2 2040 turns 087 oz length in after hour rest 3 2135 turns 091 oz length fter 1 hour rest 4 2220 turns 090 oz length measured 5 2250 turns 095 oz length measured Washed re-lubed 6 2275 turns 09 oz length measured Washed re-lubed 7 Broke during winding motor built up pre-wound used until month later rest windups done same day over period about 5 hours windup broke motor hurried happened after landing grit Hangar 1 Lakehurst Although washed re-lubed motor possible 120 Model Aviation IlObby shop 5*SPI55 654114605 NE e RF800 Dual Stint Nose Gear Fults Tooling PO Box 95 Champaign IL 61824 soot Add $260 p5bred didnt get really clean feel sure motor could have wound flown again taken time winding provided clean Note also motors energy storage capability continued increase until mo tor broke no sign motor getting tired Winding Tan rubber Some fliers have problems adapting Tan somehow felt comfortable almost first Ac tually sort forced learn quickly thecondition Pirelli poor-tounknown time wasnt time test rubber flying Basic Winding consider use tor quemeter imperative using Tan read learn First less full-power applications Tan very much like Pirelli after learn make appro priate adjustments cross-section length following discussion covers tak ing Tan absolutely way dont necessarily have push rubber quite hard cases Begin windup no 4x stretch wind slowly watch torquemeter torque will rise steadily slowly about same number turns ever rapidly torque rise speeds up wind short periods time momentarily re duce stretch indicated torque drops lower stretch reduces re mains come original stretch approaching maximum stress amount stretch torque rises come back origi nal stretch reduce stretch about 15% resume winding slowly Repeat un stretch/stretch maneuver until reach maximum stress distance between hooks model Hold turns motor model hook length massage large knots until re-arrange smaller knots torque drops during ma nipulation knots add turns restore torque level Winding complete max stress further manipulation does reduce torque torque level wont cause model out-climb ceil ing hook up launch torque too high ceiling reduce turns slowly un til torque right level Tan has very steep curve last few turns almost impossible transfer full torque model need Beware has experience absolutely cannot rush last 20% turns Any rubber must scrupulously clean blast winding especially Tan because surface smooth must sufficient lube rubber prevent scuffing motor must have nicks other mechanical damage other wise stress can concentrate damage site cause break Try must since sometimes can get Short Motor Tests very effective Indoor model test flying strategy has fly 1/3 -length motors rest equa Get Out Joint Quickly Some johns tough get tough get out Sullivan Ball joint #560 nelther fact no other ball joint strong reliable yet easy install unhook adjust quick-release locking sleeve its glass filled nylon socket locks ball securely eliminates play Yet allows range off-axis motion pivots freely cant vibrate wear loose either ball constructed nickel plated steel extra strength kind innovation something can expect Sullivan always coming up new ways - . help projects geto theground So IUIlIA/iii youre really ready fly ask ball joint PRODUCTS can p better ever PO 8ox5166 Baltimore MD 21224 Getting Better Ideas Off Ground tion short motor supplemented weighted stick running between rear hook motor half-length motor stick half length full mo tor weighs half much half-length rub ber holds half turns model climbs half long total flight time will close half long full flight high ceiling model never gets high enough get trouble get TV TRA N SM ITT ER test flying given time period BROACCAS worried about model behaves full torque short motor test will tell you quickly Over years testing fliers results have very accurate key accuracy weighted stick makes motor weigh same May1991 121 full motor model trim doesnt change due shift center gravity CG time CG wont shift changing motor weight CG centered between motor hooks What need quick test flight dont have time make spacer bar shortcut will allow fullContinued page 123 HL 1 FF Indoor/Tenny Continued page 121 power test flight adjustments use shorter motor same rubber crosssection add ballast corresponding missing rubber weight example real-life situation model CG /2 ahead center motor lighter motor will shift CG back nor mal motor 22 long test will done 15-in loop rubber used weighs 000189 oz/inch 15-in loop weighs 15 x 2 x 000189 00567 oz balance model 22-in motor 008316 oz add 002646 oz model 1/2 behind CG trim wont change torque burst response model will accurate use same launch torque other flight parameters will change somewhat because test 1oop has different amount slack un winds climb will last longer proper spacer cruise will ex tended ualess model runs out turns too soon ratio launch turns turns left probably will very inaccurate Mini-Stick revisited August 1990 col umn reported Tom Vallees Mini-Stick concept livingroom-class model uses introduce Indoor flying new recruits class seems catching some Toms plans plans original versions appearing several club newslet ters Burr Stantons INMARC Newsletter design both conventional tractor pusher canard versions abbreviated rules Maximum wing 7-in span 25-in chord maximum length 10 motor stick 5-in maxi mum Stab area 50% wing area maxi mum Monoplane covering can anything except microfilm all-wood prop Special rules contests Toms liv ing room Fly AMA rules except three ten-second steers permitted winding must done kitchen Rescue photo documents spectacular goofups 1990 USIC new Intermediate stick totally untested desperation made some test flights small practice areas end bleachers did best avoid air circulation intake served laboratory Unfortunately model found air intake anyway ended up plastered against grill Roy Bourke recorded successful rescue ef fort An extensible service platform available boost right level bout 18 ft above floor Luckily air flow could blocked well enough slid ing pieces typing paper between sur faces grill allowed un plug tail boom get model down two separate pieces minor dam age everything except pride Unusual Motor Stick models flown Rene Rutty Switzerland 1990 Well-Adjusted Two Places Once new Sullivan Split Elevator Joint #558 its Snap Thats because quick-release locking sleeves snap securely allowing range off-axis motion Yet theyre much easier unhook adjust individually other ball joints kit has double ball threads onto control rod elevator half connected double ball ball joints easy adjustments elevator control horns can located anywhere elevator complete kit includes double ball jam nut two socket/sleeve assemblies e So youre workingona project needs IUIt~ijii help getting off ground look Sullivan -F PRODUCTS Youll find ideas very easy adjust P0 Box 5166 Batttsore MD 21224 Getting Better Ideas Off Ground World Champs have unusual construction motor sticks photo shows thin balsa spiral-wrapped create tor sionally rigid motor stick visible photo four pieces boron add compression strength stiffness Stan Chiltons props always run smoothly Thats because uses pitch checking gauge allows him pre cisely set blade angle measure pitch anywhere blade D responding advertisers mention read about Model Aviation FF Foamies/Goldbach Kruse Continued page 53 Make launcher looping two Number 32 rubber bands together looping around 6-in length 3A6-in dowel Tilt plane about 300 right aim upward about 450 angle pull back launch position Trim arc up right glide left properly trimmed should glide slowly al verge stall Enjoy both Foamies can provide welcome break complicated projects usually tackle LI May1991 123
Edition: Model Aviation - 1991/05
Page Numbers: 55, 120, 121, 123
BIG SHOW TIME AGAIN 1991 Us Indoor Championships will held John son City Tennessee June 6 through 9 1991 sponsored again National Free Flight Society No details presently available can get entry blanks available Just send business-sized SASE Tony Italiano 1655 Revere Rd Brookfield WI 53005 bag bag January 1991 column raised warning about certain plas tic rubber storage bags topic has gen erated comments other topic ever presented have received ques tions suggestions reports bad rubber letters skeptic personally has lost no rubber Roy Stewart asked about disposable plastic rolls gro cery store Tom Matterfis suggested using aluminum foil bags held together double-sided tape broad range infor mation came Boyd Felstead summa rizing reports several international fliers Another suggested source pleated sandwich bag very lightweight plas tic available grocery store personal experience have found couple different types plastic bags holding deteriorated rubber including sealable bag piece formerly prime Pirelli appeared burned crisp wherever touched plastic also found other bags rubber seemed OK bottom line ualess have chemist buddy access gas chroma tograph cant sure bags safe Although vinyl chloride has strongly implicated causative agent should assumed other ma terial might outgassing plastic harmless Jerry Bockius insists rare chemicals disasterol infernalon may also involved what us ing seems safe keep using long certain can keep getting ex actly same material As myself Ive switched 100% glassine envelopes oven bags major downer two fold takes lot time individually move motors raw rubber strip new individually labelled containers whatever used Also glassine envelopes really intended store thin stacks stamps rather glob rubber strip Conse quently store less gracefully tend spill motors out unless carefully han dled answer keeping envelopes closed appears solved using pressure-sensitive self adhesive paper la bel strips use Avery #S828 labels cut halO keep lube off label makes reusable latch works very well Flying Opportunities following list ings contest dates presently hand CDs please fill dates June 1991 beyond California Los Angeles area Monthly sessions 60-ft downtown LA Ar mory Stadium Way Contact Ken John son 16728 Burmuda Granada Hills CA 91344 Tel 818 368-0448 California San Diego Monthly sessions Cat Howard Haupt 3860 Ecochee Ave San Diego CA 92117 Connecticut Glastonbury Indoor flying Glastonbury has cancelled until further notice ConnecticutNorwich Flying session Apr 27 1991 Jerry Bockius 48 Division St Norwich CT 06360 Tel 203 887-5879 Florida Miami Dr John Martin 2180 Ti gertail Ave Miami FL 33133 Tel 305 858-6363 Last MIAMA No6 seasonMay 18-19 1991 McDill AFB Idaho Moscow has another Kibbie Dome session tentatively scheduled Au gust 8 through 11 1991 Andy Tagliafico 650-B Taybin Rd NW Salem OR 97304 Tel 503 371-0492 May 1991 55 Free FMt Indoor Bud Tenny lox 545 Rldardson TX 75080 Bud Tenny rescues model air intake aid adjustable-height platform Swiss filer Rene Butty uses boron spiral-wrapped balsa build rigid motor sticks Continued page 120 Side view Stan Chiltons prop pitch checker showing radius adjustment built-in protractor allows Stan measure pitch station along blade 74 F t' e d /-OO--6a/t CL11 /-906-g63- /225 Mail Orders Ad 1 Per Order 9ct$2OO~ee%4OOO4 Offer Good Until 4/30/91Offer Good Until 4/30/91Offer Good Until 6/1/91 R/C SPORT MODELSA/C 114 SCALE KETS ~rgr # ~ kwLow Wing Spot 9 XW8NMOd/ OrWhLpn TBner GOS.......S42S9 w# SweatLow Wlt A*rObt A~o 654 t : *. dAd i 04* QkButt SosRats & Hw~er ~r 4# . .. .. . it Aup CA TA MenoflIns* ML 495*e WSA l6T A A T Oltn. SI.SI. lFssoI 3I/S431255 41/8 4 601255 jRF500j~60-601575 RFSOO65/3260121675 607507045/320455411575 LA 50560 44345*1 3145 v01 LET US BUILD YOUR NEXT R/O AIR CRAFT WE WILL BUILD ANY AIR CRAFT INLUDING GIANT SCALE IN THE BONES OR READY TO FLY PROMPT DELIVERY NO DEPOSIT REQUIRED BYRON KITS WELCOME BUILT TO FLY CALL FOR PRICE QUOTE FLIGHT LINE Custom Bulit RC Aircraft 609 391-1855 FF Indoor/Tenny Continued page 55 Illinois Chicago area year-round weekly sessions 25-ft gym College DuPage Glen Ellyn IL Currently held Wednes day evenings Don Lindley 420 Tupelo Nap erville IL 60540 Tel 708 355-9674 Kansas Topeka Class AAA Cat II Kan sas Indoor State Championship Whiting Field House Topeka KS April 20 1991 Jack Koehlar 3425 SW Arrowhead Rd Topeka KS 66614-3485 Tel 913 272-8439 Kentucky Louisville Due site renova tions access currently intermittent Con tact Burr Stanton 9210 Darley Dr Louis ville KY 40241 Tel 502 425-1915 period ically information Tennessee Johnson City 1991 USIC June 6-9 1991 Tony Italiano 1655 Revere Rd Brookfield WI 53005 Washington State Seattle Area Cat II Idoor meet Naval Armory April 27 1991 Ed Lamb 15911 SE 42nd P1 Belle vue WA 98006 Tel 206 747-7806 TAN LOADING have heard said wind Tan rubber too hard kills motor oaly good four flights Dont believe Once twice have apparently overstressed Tan find apparently recovered next day Im sure really overstressed rubber simply lost track what ing know motor thought dead came life again possible wind Tan inappropriately also very easy fooled unusual torque curve Heres case history piece Tan rubber torque values launch torque New 233-in loop x 096 oz 1 Break-in wind 1790 turns 06 oz motor elongated 24 permanent change 2 2040 turns 087 oz length in after hour rest 3 2135 turns 091 oz length fter 1 hour rest 4 2220 turns 090 oz length measured 5 2250 turns 095 oz length measured Washed re-lubed 6 2275 turns 09 oz length measured Washed re-lubed 7 Broke during winding motor built up pre-wound used until month later rest windups done same day over period about 5 hours windup broke motor hurried happened after landing grit Hangar 1 Lakehurst Although washed re-lubed motor possible 120 Model Aviation IlObby shop 5*SPI55 654114605 NE e RF800 Dual Stint Nose Gear Fults Tooling PO Box 95 Champaign IL 61824 soot Add $260 p5bred didnt get really clean feel sure motor could have wound flown again taken time winding provided clean Note also motors energy storage capability continued increase until mo tor broke no sign motor getting tired Winding Tan rubber Some fliers have problems adapting Tan somehow felt comfortable almost first Ac tually sort forced learn quickly thecondition Pirelli poor-tounknown time wasnt time test rubber flying Basic Winding consider use tor quemeter imperative using Tan read learn First less full-power applications Tan very much like Pirelli after learn make appro priate adjustments cross-section length following discussion covers tak ing Tan absolutely way dont necessarily have push rubber quite hard cases Begin windup no 4x stretch wind slowly watch torquemeter torque will rise steadily slowly about same number turns ever rapidly torque rise speeds up wind short periods time momentarily re duce stretch indicated torque drops lower stretch reduces re mains come original stretch approaching maximum stress amount stretch torque rises come back origi nal stretch reduce stretch about 15% resume winding slowly Repeat un stretch/stretch maneuver until reach maximum stress distance between hooks model Hold turns motor model hook length massage large knots until re-arrange smaller knots torque drops during ma nipulation knots add turns restore torque level Winding complete max stress further manipulation does reduce torque torque level wont cause model out-climb ceil ing hook up launch torque too high ceiling reduce turns slowly un til torque right level Tan has very steep curve last few turns almost impossible transfer full torque model need Beware has experience absolutely cannot rush last 20% turns Any rubber must scrupulously clean blast winding especially Tan because surface smooth must sufficient lube rubber prevent scuffing motor must have nicks other mechanical damage other wise stress can concentrate damage site cause break Try must since sometimes can get Short Motor Tests very effective Indoor model test flying strategy has fly 1/3 -length motors rest equa Get Out Joint Quickly Some johns tough get tough get out Sullivan Ball joint #560 nelther fact no other ball joint strong reliable yet easy install unhook adjust quick-release locking sleeve its glass filled nylon socket locks ball securely eliminates play Yet allows range off-axis motion pivots freely cant vibrate wear loose either ball constructed nickel plated steel extra strength kind innovation something can expect Sullivan always coming up new ways - . help projects geto theground So IUIlIA/iii youre really ready fly ask ball joint PRODUCTS can p better ever PO 8ox5166 Baltimore MD 21224 Getting Better Ideas Off Ground tion short motor supplemented weighted stick running between rear hook motor half-length motor stick half length full mo tor weighs half much half-length rub ber holds half turns model climbs half long total flight time will close half long full flight high ceiling model never gets high enough get trouble get TV TRA N SM ITT ER test flying given time period BROACCAS worried about model behaves full torque short motor test will tell you quickly Over years testing fliers results have very accurate key accuracy weighted stick makes motor weigh same May1991 121 full motor model trim doesnt change due shift center gravity CG time CG wont shift changing motor weight CG centered between motor hooks What need quick test flight dont have time make spacer bar shortcut will allow fullContinued page 123 HL 1 FF Indoor/Tenny Continued page 121 power test flight adjustments use shorter motor same rubber crosssection add ballast corresponding missing rubber weight example real-life situation model CG /2 ahead center motor lighter motor will shift CG back nor mal motor 22 long test will done 15-in loop rubber used weighs 000189 oz/inch 15-in loop weighs 15 x 2 x 000189 00567 oz balance model 22-in motor 008316 oz add 002646 oz model 1/2 behind CG trim wont change torque burst response model will accurate use same launch torque other flight parameters will change somewhat because test 1oop has different amount slack un winds climb will last longer proper spacer cruise will ex tended ualess model runs out turns too soon ratio launch turns turns left probably will very inaccurate Mini-Stick revisited August 1990 col umn reported Tom Vallees Mini-Stick concept livingroom-class model uses introduce Indoor flying new recruits class seems catching some Toms plans plans original versions appearing several club newslet ters Burr Stantons INMARC Newsletter design both conventional tractor pusher canard versions abbreviated rules Maximum wing 7-in span 25-in chord maximum length 10 motor stick 5-in maxi mum Stab area 50% wing area maxi mum Monoplane covering can anything except microfilm all-wood prop Special rules contests Toms liv ing room Fly AMA rules except three ten-second steers permitted winding must done kitchen Rescue photo documents spectacular goofups 1990 USIC new Intermediate stick totally untested desperation made some test flights small practice areas end bleachers did best avoid air circulation intake served laboratory Unfortunately model found air intake anyway ended up plastered against grill Roy Bourke recorded successful rescue ef fort An extensible service platform available boost right level bout 18 ft above floor Luckily air flow could blocked well enough slid ing pieces typing paper between sur faces grill allowed un plug tail boom get model down two separate pieces minor dam age everything except pride Unusual Motor Stick models flown Rene Rutty Switzerland 1990 Well-Adjusted Two Places Once new Sullivan Split Elevator Joint #558 its Snap Thats because quick-release locking sleeves snap securely allowing range off-axis motion Yet theyre much easier unhook adjust individually other ball joints kit has double ball threads onto control rod elevator half connected double ball ball joints easy adjustments elevator control horns can located anywhere elevator complete kit includes double ball jam nut two socket/sleeve assemblies e So youre workingona project needs IUIt~ijii help getting off ground look Sullivan -F PRODUCTS Youll find ideas very easy adjust P0 Box 5166 Batttsore MD 21224 Getting Better Ideas Off Ground World Champs have unusual construction motor sticks photo shows thin balsa spiral-wrapped create tor sionally rigid motor stick visible photo four pieces boron add compression strength stiffness Stan Chiltons props always run smoothly Thats because uses pitch checking gauge allows him pre cisely set blade angle measure pitch anywhere blade D responding advertisers mention read about Model Aviation FF Foamies/Goldbach Kruse Continued page 53 Make launcher looping two Number 32 rubber bands together looping around 6-in length 3A6-in dowel Tilt plane about 300 right aim upward about 450 angle pull back launch position Trim arc up right glide left properly trimmed should glide slowly al verge stall Enjoy both Foamies can provide welcome break complicated projects usually tackle LI May1991 123
Edition: Model Aviation - 1991/05
Page Numbers: 55, 120, 121, 123
BIG SHOW TIME AGAIN 1991 Us Indoor Championships will held John son City Tennessee June 6 through 9 1991 sponsored again National Free Flight Society No details presently available can get entry blanks available Just send business-sized SASE Tony Italiano 1655 Revere Rd Brookfield WI 53005 bag bag January 1991 column raised warning about certain plas tic rubber storage bags topic has gen erated comments other topic ever presented have received ques tions suggestions reports bad rubber letters skeptic personally has lost no rubber Roy Stewart asked about disposable plastic rolls gro cery store Tom Matterfis suggested using aluminum foil bags held together double-sided tape broad range infor mation came Boyd Felstead summa rizing reports several international fliers Another suggested source pleated sandwich bag very lightweight plas tic available grocery store personal experience have found couple different types plastic bags holding deteriorated rubber including sealable bag piece formerly prime Pirelli appeared burned crisp wherever touched plastic also found other bags rubber seemed OK bottom line ualess have chemist buddy access gas chroma tograph cant sure bags safe Although vinyl chloride has strongly implicated causative agent should assumed other ma terial might outgassing plastic harmless Jerry Bockius insists rare chemicals disasterol infernalon may also involved what us ing seems safe keep using long certain can keep getting ex actly same material As myself Ive switched 100% glassine envelopes oven bags major downer two fold takes lot time individually move motors raw rubber strip new individually labelled containers whatever used Also glassine envelopes really intended store thin stacks stamps rather glob rubber strip Conse quently store less gracefully tend spill motors out unless carefully han dled answer keeping envelopes closed appears solved using pressure-sensitive self adhesive paper la bel strips use Avery #S828 labels cut halO keep lube off label makes reusable latch works very well Flying Opportunities following list ings contest dates presently hand CDs please fill dates June 1991 beyond California Los Angeles area Monthly sessions 60-ft downtown LA Ar mory Stadium Way Contact Ken John son 16728 Burmuda Granada Hills CA 91344 Tel 818 368-0448 California San Diego Monthly sessions Cat Howard Haupt 3860 Ecochee Ave San Diego CA 92117 Connecticut Glastonbury Indoor flying Glastonbury has cancelled until further notice ConnecticutNorwich Flying session Apr 27 1991 Jerry Bockius 48 Division St Norwich CT 06360 Tel 203 887-5879 Florida Miami Dr John Martin 2180 Ti gertail Ave Miami FL 33133 Tel 305 858-6363 Last MIAMA No6 seasonMay 18-19 1991 McDill AFB Idaho Moscow has another Kibbie Dome session tentatively scheduled Au gust 8 through 11 1991 Andy Tagliafico 650-B Taybin Rd NW Salem OR 97304 Tel 503 371-0492 May 1991 55 Free FMt Indoor Bud Tenny lox 545 Rldardson TX 75080 Bud Tenny rescues model air intake aid adjustable-height platform Swiss filer Rene Butty uses boron spiral-wrapped balsa build rigid motor sticks Continued page 120 Side view Stan Chiltons prop pitch checker showing radius adjustment built-in protractor allows Stan measure pitch station along blade 74 F t' e d /-OO--6a/t CL11 /-906-g63- /225 Mail Orders Ad 1 Per Order 9ct$2OO~ee%4OOO4 Offer Good Until 4/30/91Offer Good Until 4/30/91Offer Good Until 6/1/91 R/C SPORT MODELSA/C 114 SCALE KETS ~rgr # ~ kwLow Wing Spot 9 XW8NMOd/ OrWhLpn TBner GOS.......S42S9 w# SweatLow Wlt A*rObt A~o 654 t : *. dAd i 04* QkButt SosRats & Hw~er ~r 4# . .. .. . it Aup CA TA MenoflIns* ML 495*e WSA l6T A A T Oltn. SI.SI. lFssoI 3I/S431255 41/8 4 601255 jRF500j~60-601575 RFSOO65/3260121675 607507045/320455411575 LA 50560 44345*1 3145 v01 LET US BUILD YOUR NEXT R/O AIR CRAFT WE WILL BUILD ANY AIR CRAFT INLUDING GIANT SCALE IN THE BONES OR READY TO FLY PROMPT DELIVERY NO DEPOSIT REQUIRED BYRON KITS WELCOME BUILT TO FLY CALL FOR PRICE QUOTE FLIGHT LINE Custom Bulit RC Aircraft 609 391-1855 FF Indoor/Tenny Continued page 55 Illinois Chicago area year-round weekly sessions 25-ft gym College DuPage Glen Ellyn IL Currently held Wednes day evenings Don Lindley 420 Tupelo Nap erville IL 60540 Tel 708 355-9674 Kansas Topeka Class AAA Cat II Kan sas Indoor State Championship Whiting Field House Topeka KS April 20 1991 Jack Koehlar 3425 SW Arrowhead Rd Topeka KS 66614-3485 Tel 913 272-8439 Kentucky Louisville Due site renova tions access currently intermittent Con tact Burr Stanton 9210 Darley Dr Louis ville KY 40241 Tel 502 425-1915 period ically information Tennessee Johnson City 1991 USIC June 6-9 1991 Tony Italiano 1655 Revere Rd Brookfield WI 53005 Washington State Seattle Area Cat II Idoor meet Naval Armory April 27 1991 Ed Lamb 15911 SE 42nd P1 Belle vue WA 98006 Tel 206 747-7806 TAN LOADING have heard said wind Tan rubber too hard kills motor oaly good four flights Dont believe Once twice have apparently overstressed Tan find apparently recovered next day Im sure really overstressed rubber simply lost track what ing know motor thought dead came life again possible wind Tan inappropriately also very easy fooled unusual torque curve Heres case history piece Tan rubber torque values launch torque New 233-in loop x 096 oz 1 Break-in wind 1790 turns 06 oz motor elongated 24 permanent change 2 2040 turns 087 oz length in after hour rest 3 2135 turns 091 oz length fter 1 hour rest 4 2220 turns 090 oz length measured 5 2250 turns 095 oz length measured Washed re-lubed 6 2275 turns 09 oz length measured Washed re-lubed 7 Broke during winding motor built up pre-wound used until month later rest windups done same day over period about 5 hours windup broke motor hurried happened after landing grit Hangar 1 Lakehurst Although washed re-lubed motor possible 120 Model Aviation IlObby shop 5*SPI55 654114605 NE e RF800 Dual Stint Nose Gear Fults Tooling PO Box 95 Champaign IL 61824 soot Add $260 p5bred didnt get really clean feel sure motor could have wound flown again taken time winding provided clean Note also motors energy storage capability continued increase until mo tor broke no sign motor getting tired Winding Tan rubber Some fliers have problems adapting Tan somehow felt comfortable almost first Ac tually sort forced learn quickly thecondition Pirelli poor-tounknown time wasnt time test rubber flying Basic Winding consider use tor quemeter imperative using Tan read learn First less full-power applications Tan very much like Pirelli after learn make appro priate adjustments cross-section length following discussion covers tak ing Tan absolutely way dont necessarily have push rubber quite hard cases Begin windup no 4x stretch wind slowly watch torquemeter torque will rise steadily slowly about same number turns ever rapidly torque rise speeds up wind short periods time momentarily re duce stretch indicated torque drops lower stretch reduces re mains come original stretch approaching maximum stress amount stretch torque rises come back origi nal stretch reduce stretch about 15% resume winding slowly Repeat un stretch/stretch maneuver until reach maximum stress distance between hooks model Hold turns motor model hook length massage large knots until re-arrange smaller knots torque drops during ma nipulation knots add turns restore torque level Winding complete max stress further manipulation does reduce torque torque level wont cause model out-climb ceil ing hook up launch torque too high ceiling reduce turns slowly un til torque right level Tan has very steep curve last few turns almost impossible transfer full torque model need Beware has experience absolutely cannot rush last 20% turns Any rubber must scrupulously clean blast winding especially Tan because surface smooth must sufficient lube rubber prevent scuffing motor must have nicks other mechanical damage other wise stress can concentrate damage site cause break Try must since sometimes can get Short Motor Tests very effective Indoor model test flying strategy has fly 1/3 -length motors rest equa Get Out Joint Quickly Some johns tough get tough get out Sullivan Ball joint #560 nelther fact no other ball joint strong reliable yet easy install unhook adjust quick-release locking sleeve its glass filled nylon socket locks ball securely eliminates play Yet allows range off-axis motion pivots freely cant vibrate wear loose either ball constructed nickel plated steel extra strength kind innovation something can expect Sullivan always coming up new ways - . help projects geto theground So IUIlIA/iii youre really ready fly ask ball joint PRODUCTS can p better ever PO 8ox5166 Baltimore MD 21224 Getting Better Ideas Off Ground tion short motor supplemented weighted stick running between rear hook motor half-length motor stick half length full mo tor weighs half much half-length rub ber holds half turns model climbs half long total flight time will close half long full flight high ceiling model never gets high enough get trouble get TV TRA N SM ITT ER test flying given time period BROACCAS worried about model behaves full torque short motor test will tell you quickly Over years testing fliers results have very accurate key accuracy weighted stick makes motor weigh same May1991 121 full motor model trim doesnt change due shift center gravity CG time CG wont shift changing motor weight CG centered between motor hooks What need quick test flight dont have time make spacer bar shortcut will allow fullContinued page 123 HL 1 FF Indoor/Tenny Continued page 121 power test flight adjustments use shorter motor same rubber crosssection add ballast corresponding missing rubber weight example real-life situation model CG /2 ahead center motor lighter motor will shift CG back nor mal motor 22 long test will done 15-in loop rubber used weighs 000189 oz/inch 15-in loop weighs 15 x 2 x 000189 00567 oz balance model 22-in motor 008316 oz add 002646 oz model 1/2 behind CG trim wont change torque burst response model will accurate use same launch torque other flight parameters will change somewhat because test 1oop has different amount slack un winds climb will last longer proper spacer cruise will ex tended ualess model runs out turns too soon ratio launch turns turns left probably will very inaccurate Mini-Stick revisited August 1990 col umn reported Tom Vallees Mini-Stick concept livingroom-class model uses introduce Indoor flying new recruits class seems catching some Toms plans plans original versions appearing several club newslet ters Burr Stantons INMARC Newsletter design both conventional tractor pusher canard versions abbreviated rules Maximum wing 7-in span 25-in chord maximum length 10 motor stick 5-in maxi mum Stab area 50% wing area maxi mum Monoplane covering can anything except microfilm all-wood prop Special rules contests Toms liv ing room Fly AMA rules except three ten-second steers permitted winding must done kitchen Rescue photo documents spectacular goofups 1990 USIC new Intermediate stick totally untested desperation made some test flights small practice areas end bleachers did best avoid air circulation intake served laboratory Unfortunately model found air intake anyway ended up plastered against grill Roy Bourke recorded successful rescue ef fort An extensible service platform available boost right level bout 18 ft above floor Luckily air flow could blocked well enough slid ing pieces typing paper between sur faces grill allowed un plug tail boom get model down two separate pieces minor dam age everything except pride Unusual Motor Stick models flown Rene Rutty Switzerland 1990 Well-Adjusted Two Places Once new Sullivan Split Elevator Joint #558 its Snap Thats because quick-release locking sleeves snap securely allowing range off-axis motion Yet theyre much easier unhook adjust individually other ball joints kit has double ball threads onto control rod elevator half connected double ball ball joints easy adjustments elevator control horns can located anywhere elevator complete kit includes double ball jam nut two socket/sleeve assemblies e So youre workingona project needs IUIt~ijii help getting off ground look Sullivan -F PRODUCTS Youll find ideas very easy adjust P0 Box 5166 Batttsore MD 21224 Getting Better Ideas Off Ground World Champs have unusual construction motor sticks photo shows thin balsa spiral-wrapped create tor sionally rigid motor stick visible photo four pieces boron add compression strength stiffness Stan Chiltons props always run smoothly Thats because uses pitch checking gauge allows him pre cisely set blade angle measure pitch anywhere blade D responding advertisers mention read about Model Aviation FF Foamies/Goldbach Kruse Continued page 53 Make launcher looping two Number 32 rubber bands together looping around 6-in length 3A6-in dowel Tilt plane about 300 right aim upward about 450 angle pull back launch position Trim arc up right glide left properly trimmed should glide slowly al verge stall Enjoy both Foamies can provide welcome break complicated projects usually tackle LI May1991 123
Edition: Model Aviation - 1991/05
Page Numbers: 55, 120, 121, 123
BIG SHOW TIME AGAIN 1991 Us Indoor Championships will held John son City Tennessee June 6 through 9 1991 sponsored again National Free Flight Society No details presently available can get entry blanks available Just send business-sized SASE Tony Italiano 1655 Revere Rd Brookfield WI 53005 bag bag January 1991 column raised warning about certain plas tic rubber storage bags topic has gen erated comments other topic ever presented have received ques tions suggestions reports bad rubber letters skeptic personally has lost no rubber Roy Stewart asked about disposable plastic rolls gro cery store Tom Matterfis suggested using aluminum foil bags held together double-sided tape broad range infor mation came Boyd Felstead summa rizing reports several international fliers Another suggested source pleated sandwich bag very lightweight plas tic available grocery store personal experience have found couple different types plastic bags holding deteriorated rubber including sealable bag piece formerly prime Pirelli appeared burned crisp wherever touched plastic also found other bags rubber seemed OK bottom line ualess have chemist buddy access gas chroma tograph cant sure bags safe Although vinyl chloride has strongly implicated causative agent should assumed other ma terial might outgassing plastic harmless Jerry Bockius insists rare chemicals disasterol infernalon may also involved what us ing seems safe keep using long certain can keep getting ex actly same material As myself Ive switched 100% glassine envelopes oven bags major downer two fold takes lot time individually move motors raw rubber strip new individually labelled containers whatever used Also glassine envelopes really intended store thin stacks stamps rather glob rubber strip Conse quently store less gracefully tend spill motors out unless carefully han dled answer keeping envelopes closed appears solved using pressure-sensitive self adhesive paper la bel strips use Avery #S828 labels cut halO keep lube off label makes reusable latch works very well Flying Opportunities following list ings contest dates presently hand CDs please fill dates June 1991 beyond California Los Angeles area Monthly sessions 60-ft downtown LA Ar mory Stadium Way Contact Ken John son 16728 Burmuda Granada Hills CA 91344 Tel 818 368-0448 California San Diego Monthly sessions Cat Howard Haupt 3860 Ecochee Ave San Diego CA 92117 Connecticut Glastonbury Indoor flying Glastonbury has cancelled until further notice ConnecticutNorwich Flying session Apr 27 1991 Jerry Bockius 48 Division St Norwich CT 06360 Tel 203 887-5879 Florida Miami Dr John Martin 2180 Ti gertail Ave Miami FL 33133 Tel 305 858-6363 Last MIAMA No6 seasonMay 18-19 1991 McDill AFB Idaho Moscow has another Kibbie Dome session tentatively scheduled Au gust 8 through 11 1991 Andy Tagliafico 650-B Taybin Rd NW Salem OR 97304 Tel 503 371-0492 May 1991 55 Free FMt Indoor Bud Tenny lox 545 Rldardson TX 75080 Bud Tenny rescues model air intake aid adjustable-height platform Swiss filer Rene Butty uses boron spiral-wrapped balsa build rigid motor sticks Continued page 120 Side view Stan Chiltons prop pitch checker showing radius adjustment built-in protractor allows Stan measure pitch station along blade 74 F t' e d /-OO--6a/t CL11 /-906-g63- /225 Mail Orders Ad 1 Per Order 9ct$2OO~ee%4OOO4 Offer Good Until 4/30/91Offer Good Until 4/30/91Offer Good Until 6/1/91 R/C SPORT MODELSA/C 114 SCALE KETS ~rgr # ~ kwLow Wing Spot 9 XW8NMOd/ OrWhLpn TBner GOS.......S42S9 w# SweatLow Wlt A*rObt A~o 654 t : *. dAd i 04* QkButt SosRats & Hw~er ~r 4# . .. .. . it Aup CA TA MenoflIns* ML 495*e WSA l6T A A T Oltn. SI.SI. lFssoI 3I/S431255 41/8 4 601255 jRF500j~60-601575 RFSOO65/3260121675 607507045/320455411575 LA 50560 44345*1 3145 v01 LET US BUILD YOUR NEXT R/O AIR CRAFT WE WILL BUILD ANY AIR CRAFT INLUDING GIANT SCALE IN THE BONES OR READY TO FLY PROMPT DELIVERY NO DEPOSIT REQUIRED BYRON KITS WELCOME BUILT TO FLY CALL FOR PRICE QUOTE FLIGHT LINE Custom Bulit RC Aircraft 609 391-1855 FF Indoor/Tenny Continued page 55 Illinois Chicago area year-round weekly sessions 25-ft gym College DuPage Glen Ellyn IL Currently held Wednes day evenings Don Lindley 420 Tupelo Nap erville IL 60540 Tel 708 355-9674 Kansas Topeka Class AAA Cat II Kan sas Indoor State Championship Whiting Field House Topeka KS April 20 1991 Jack Koehlar 3425 SW Arrowhead Rd Topeka KS 66614-3485 Tel 913 272-8439 Kentucky Louisville Due site renova tions access currently intermittent Con tact Burr Stanton 9210 Darley Dr Louis ville KY 40241 Tel 502 425-1915 period ically information Tennessee Johnson City 1991 USIC June 6-9 1991 Tony Italiano 1655 Revere Rd Brookfield WI 53005 Washington State Seattle Area Cat II Idoor meet Naval Armory April 27 1991 Ed Lamb 15911 SE 42nd P1 Belle vue WA 98006 Tel 206 747-7806 TAN LOADING have heard said wind Tan rubber too hard kills motor oaly good four flights Dont believe Once twice have apparently overstressed Tan find apparently recovered next day Im sure really overstressed rubber simply lost track what ing know motor thought dead came life again possible wind Tan inappropriately also very easy fooled unusual torque curve Heres case history piece Tan rubber torque values launch torque New 233-in loop x 096 oz 1 Break-in wind 1790 turns 06 oz motor elongated 24 permanent change 2 2040 turns 087 oz length in after hour rest 3 2135 turns 091 oz length fter 1 hour rest 4 2220 turns 090 oz length measured 5 2250 turns 095 oz length measured Washed re-lubed 6 2275 turns 09 oz length measured Washed re-lubed 7 Broke during winding motor built up pre-wound used until month later rest windups done same day over period about 5 hours windup broke motor hurried happened after landing grit Hangar 1 Lakehurst Although washed re-lubed motor possible 120 Model Aviation IlObby shop 5*SPI55 654114605 NE e RF800 Dual Stint Nose Gear Fults Tooling PO Box 95 Champaign IL 61824 soot Add $260 p5bred didnt get really clean feel sure motor could have wound flown again taken time winding provided clean Note also motors energy storage capability continued increase until mo tor broke no sign motor getting tired Winding Tan rubber Some fliers have problems adapting Tan somehow felt comfortable almost first Ac tually sort forced learn quickly thecondition Pirelli poor-tounknown time wasnt time test rubber flying Basic Winding consider use tor quemeter imperative using Tan read learn First less full-power applications Tan very much like Pirelli after learn make appro priate adjustments cross-section length following discussion covers tak ing Tan absolutely way dont necessarily have push rubber quite hard cases Begin windup no 4x stretch wind slowly watch torquemeter torque will rise steadily slowly about same number turns ever rapidly torque rise speeds up wind short periods time momentarily re duce stretch indicated torque drops lower stretch reduces re mains come original stretch approaching maximum stress amount stretch torque rises come back origi nal stretch reduce stretch about 15% resume winding slowly Repeat un stretch/stretch maneuver until reach maximum stress distance between hooks model Hold turns motor model hook length massage large knots until re-arrange smaller knots torque drops during ma nipulation knots add turns restore torque level Winding complete max stress further manipulation does reduce torque torque level wont cause model out-climb ceil ing hook up launch torque too high ceiling reduce turns slowly un til torque right level Tan has very steep curve last few turns almost impossible transfer full torque model need Beware has experience absolutely cannot rush last 20% turns Any rubber must scrupulously clean blast winding especially Tan because surface smooth must sufficient lube rubber prevent scuffing motor must have nicks other mechanical damage other wise stress can concentrate damage site cause break Try must since sometimes can get Short Motor Tests very effective Indoor model test flying strategy has fly 1/3 -length motors rest equa Get Out Joint Quickly Some johns tough get tough get out Sullivan Ball joint #560 nelther fact no other ball joint strong reliable yet easy install unhook adjust quick-release locking sleeve its glass filled nylon socket locks ball securely eliminates play Yet allows range off-axis motion pivots freely cant vibrate wear loose either ball constructed nickel plated steel extra strength kind innovation something can expect Sullivan always coming up new ways - . help projects geto theground So IUIlIA/iii youre really ready fly ask ball joint PRODUCTS can p better ever PO 8ox5166 Baltimore MD 21224 Getting Better Ideas Off Ground tion short motor supplemented weighted stick running between rear hook motor half-length motor stick half length full mo tor weighs half much half-length rub ber holds half turns model climbs half long total flight time will close half long full flight high ceiling model never gets high enough get trouble get TV TRA N SM ITT ER test flying given time period BROACCAS worried about model behaves full torque short motor test will tell you quickly Over years testing fliers results have very accurate key accuracy weighted stick makes motor weigh same May1991 121 full motor model trim doesnt change due shift center gravity CG time CG wont shift changing motor weight CG centered between motor hooks What need quick test flight dont have time make spacer bar shortcut will allow fullContinued page 123 HL 1 FF Indoor/Tenny Continued page 121 power test flight adjustments use shorter motor same rubber crosssection add ballast corresponding missing rubber weight example real-life situation model CG /2 ahead center motor lighter motor will shift CG back nor mal motor 22 long test will done 15-in loop rubber used weighs 000189 oz/inch 15-in loop weighs 15 x 2 x 000189 00567 oz balance model 22-in motor 008316 oz add 002646 oz model 1/2 behind CG trim wont change torque burst response model will accurate use same launch torque other flight parameters will change somewhat because test 1oop has different amount slack un winds climb will last longer proper spacer cruise will ex tended ualess model runs out turns too soon ratio launch turns turns left probably will very inaccurate Mini-Stick revisited August 1990 col umn reported Tom Vallees Mini-Stick concept livingroom-class model uses introduce Indoor flying new recruits class seems catching some Toms plans plans original versions appearing several club newslet ters Burr Stantons INMARC Newsletter design both conventional tractor pusher canard versions abbreviated rules Maximum wing 7-in span 25-in chord maximum length 10 motor stick 5-in maxi mum Stab area 50% wing area maxi mum Monoplane covering can anything except microfilm all-wood prop Special rules contests Toms liv ing room Fly AMA rules except three ten-second steers permitted winding must done kitchen Rescue photo documents spectacular goofups 1990 USIC new Intermediate stick totally untested desperation made some test flights small practice areas end bleachers did best avoid air circulation intake served laboratory Unfortunately model found air intake anyway ended up plastered against grill Roy Bourke recorded successful rescue ef fort An extensible service platform available boost right level bout 18 ft above floor Luckily air flow could blocked well enough slid ing pieces typing paper between sur faces grill allowed un plug tail boom get model down two separate pieces minor dam age everything except pride Unusual Motor Stick models flown Rene Rutty Switzerland 1990 Well-Adjusted Two Places Once new Sullivan Split Elevator Joint #558 its Snap Thats because quick-release locking sleeves snap securely allowing range off-axis motion Yet theyre much easier unhook adjust individually other ball joints kit has double ball threads onto control rod elevator half connected double ball ball joints easy adjustments elevator control horns can located anywhere elevator complete kit includes double ball jam nut two socket/sleeve assemblies e So youre workingona project needs IUIt~ijii help getting off ground look Sullivan -F PRODUCTS Youll find ideas very easy adjust P0 Box 5166 Batttsore MD 21224 Getting Better Ideas Off Ground World Champs have unusual construction motor sticks photo shows thin balsa spiral-wrapped create tor sionally rigid motor stick visible photo four pieces boron add compression strength stiffness Stan Chiltons props always run smoothly Thats because uses pitch checking gauge allows him pre cisely set blade angle measure pitch anywhere blade D responding advertisers mention read about Model Aviation FF Foamies/Goldbach Kruse Continued page 53 Make launcher looping two Number 32 rubber bands together looping around 6-in length 3A6-in dowel Tilt plane about 300 right aim upward about 450 angle pull back launch position Trim arc up right glide left properly trimmed should glide slowly al verge stall Enjoy both Foamies can provide welcome break complicated projects usually tackle LI May1991 123