Gary Shaw LISTEN TO THAT FLUTTER Its always pleasure receive mail around country especially mail arrives form club newsletters very informative newsletter Texarkana RIC Flyer produced hard-working members Texarkana RIC Flying Club Inc edited Joe Cole particular note August newsletter article Ted Cannelongo describing identify correct control surface flutter serious condition can lead inflight aircraft failure Since Ive personally experienced quickly surface flutter can tear airplane apart can really relate what Ted say article times flying field Ive noticed models flying buzzing sound also known flutter recently models happened own As may already know flutter can serious problem correct because cause can very difficult find Some modelers unsuccessful solving problem just continue fly model slower speed minimize effects accepting problem unsolvable After talking model manufacturers researching model aviation magazines books model assembly instructions assembled checklist possible causes flutter Hopefully can save some little grief possibly help prevent accident As mentioned control surface flutter generally indicated low-frequency buzzing sound hear sound flying model land model immediately Flutter can quickly destroy components airplane know deterioration component can probably will result crash Find cause correct it fluttered once will flutter again Continuing fly model flutter accident waiting happen must test-fly model after attempting cure Continued page 54 _ I__________ 6 Model Aviation s Stetfens invention starts model safely Bob Taylors invention similar James ITOR R/C Products Inc MV-i TYPHOON Now choose 3 versionsl size style class construction Wing Area 909 Square Inch Wing Span 70 /2 nch Length 68 /2 /4 Inch Advanced technology design precision aerobat ics competition Light weight all-balsa construction plug-in adjustable wing stab panels Detailed plans three different versions Plans 909 Sq Version 2 Sheets $1495 Plans 1000 Sq Version 2 Sheets $1495 Plans 1085 Sq 0 Version 2 Sheets $1595 Fiberglass Cowl $1995 Clear Canopy $1495 Rib/Former Kh Specify Version$12500 PLUG-IN WING ADJUSTER KIT Two glass-tilled nylon brackets used wing panel key wing panel front rear allowing quick accurate adjustment straight flight Complete hardware instructions 2-Pack wing panel $795 4-Pack both wing panels $1295 PLUG-IN ADJUSTABLE STAB KIT Now can optimize stab incidence best flight characteristicat pair glass-tilled nylon adjusters included provide simple quick micro screw adjustment smaller front stab tube Main tube alloy aluminum matching phenolic socket Complete Package $995 WING TUBE AND SOCKET SETS Aluminum alloy tubing plug-in wings Includes special slip-fit phenolic sQckets build wing panels Special lengths order 7/16 dia x 2 ft precision fit sockets$695 5/8 dia x 2ff precision fit sockets$1095 7/8 dia x 2 ft precision fit sockets$1195 1-1/4 dia x 2 ft$995 1-1/2 dia x 3 ft$1495 GEITO1I 3713 RIC Products Inc Pompano Drive Pensacola FL 32514 904/494-0203 904/494-0207 VISA/MasterCard Welcomed $400 per item S5H esdents add 6% Tax SafetylShaw Continued page 6 problem try keep away pit spectator areas test-fly during off-hours few people field model vibrates apart crashes dont want come down populated area field begin diagnosing problem first check servo mounts deterioration often said indication surface causing flutter successful some causes flutter along some solutions 1 Pushrod stop flexing linkage 2 Play clevis pin control horn attachment Replace horn use different hole allows no play 3 Play clevis pin servo arm attachment Replace servo arm use another hole no play 4 Sloppy Z-bend fit servo arm servo arm hole too large Replace servo arm use another hole no play 5 Control horns solidly mounted Use CyA cyanoacrylate glue harden wood sure screws secure 6 Side play plastic pushrod caused tight bends Reroute pushrod 7 Elasticity flexible plastic pushrods Use heavy duty flexible rods wood fiberglass pushrods Dont use control wire can bend over 300 8 Improperly mounted flexible pushrods insufficiently supported along center portion Flexible pushrods must secured increments along entire length just ends 9 Poorly glued aileron torque rod Drill proper size hole use sufficient epoxy torque rod goes aileron wood 10 Poorly glued elevator joiner wire Drill proper size hole use sufficient epoxy 11 Excessive hinge gap Remove hinges reinstall less gap and/or iron plastic film strip seal gap 12 Aileron flex due wood too soft Build install new stiffer ailerons 13 Insufficient poorly fastened hinges 14 Hinges installed too far end control surfaces Install hinges according plans 15 Excessive play backlash servo gears Replace servo install new gears 16 Poor servo mounting Remount according manufacturers instructions Using checklist solved flutter problem model drilled holes aileron servo arm make easier install Z-bend rods however drilled too large allowing fraction millimeter play linkage Simply drilling proper-size hole replacement servo arm solved problem wouldnt have believed fraction millimeter play could cause such flutter hadnt seen myself reminded attention smallest details important building model safe fun fly Field Box Starters several recent columns Ive indicated hands fingers body parts prop continue hold lead injuries described mail Ive received letter James E Steffens Hendersonville North Carolina provided some insight new invention hes developed currently using protect himself spinning propellers during startups After having nicked spinning prop devised unit mounts field box As can see enclosed photo never have part anatomy exposed propeller starting motor Instead pushing starter onto spinner push spinner onto starter switch engaged long spinner pressed starter cone have successfully used unit year half would never consider going back starting motor front plane Continued page 59 AUTOinVAC SYSTEM new fully automatic vacuum bagging system completely self monitoring has fully adjustable vacuum switch large capacity reservoir prevents frequent cycling vacuum pump Auto-Vac kit comes completely assembled mounted wood base ready use Included kit E-Z Vac II electric pump rated 24 Hg adjustable vacuum switch vacuum gauge large capacity reservoir check valve neoprene tubing E-Z Vat connector two Quick-Lock seals 9 18~EIetJ wide bagging tube 9 15 wide breather cloth set vacuum230 V System available $700 5&H checkfMo/coD bagging instructionsliSA accepted tA residents add 775% Tan CA 92714 14 250-0307 54 Model Aviation r much less cumbersome Coincidentally week after having received James letter Bob Taylor Gilbert Arizona sent letter describing similar invention also mounts field box used start aircraft James Bobs inventions almost identical very practical Since both have expressed desire market inventions since Im sure similar piece equipment exists may want write gentlemen request yourself James E Steffens 6 Samara Dr Hendersonville NC 28739-7125 Bob Taylor 809 5 Cancun Dr Gilbert AZ 85234 Dos Don ts Around Engines Hot off press Belleville RIC Flyers club newsletter forwarded editor Darwin Evelsizer entitled Transmitter scanning pages ran across excellent column Jules Hunkovic provides some applicable dos don ts should consider time get ready start model engine 1 Dont try start flooded engine electric starter Remove glow plug fuel line disconnected hit [the engine] starter few seconds expel excess fuel Make sure have glow plug washer removed head wont pop out smack face 2 Dont make adjustments high- low-speed needles front aircraft Get behind model make adjustments after startup 3 Do start engine half throttle less 4 Do perform frequent checks engine mounts ensure engine mounting screws tightened little vibration can cost glow plugs mufflers damage radios 5 Do check propeller damage after rough landing crash nothing else least wipe dirt off prop behind spinner 6 Do ask help having problems would surprised quickly someone else can recognize obvious problems may have overlooked As mentioned last column family have recently relocated Orlando Florida weather great year-round flying fresh-squeezed orange juice fantastic new address Safety Comes First Gary Shaw 1013 Vernon Loop Oviedo FL 32765 Until next month may air smooth landings light CLASS FREE FLIGHT MODEL KIT $ 3395 POSTPAID -v L 7 Sparrow Hawk P-30 BY JOHN ODWYER WINNING SINCE 1982 REDI-CUT RIBS PREFORMED TUBE MFG BY MODEL AIRCRAFT LABS i08 S LEE STREET IRVING TEXAS 75ttt TOUCH AIR Ii POWER full-spectrum engine fuel treatment specially formulated RIC models Bonds electro chemically metal smooth pitted surfaces Reduce friction & heat Improves performance Reduce engine wear ces repair costs CAN BE USED AS RUN-OFF OIL TO CLEAN ENGINES BEFOREAFTER AVAILABLE IN HANDY SQUEEZE BOTTLES OZ -5595 -$1295 Ask Boca Bearings local hobby shop Call 14071 998-0004 Toll-free USA 800 3323258 Toll-free Canada 800 553-3256 Fax Order 14071 998-0119 send $310 catalog Nawe Addreaa CityState ____ Zip Send Boca Bearing Dept C 23t4 7140W Palmetto Park Rd Paton FL 33433 IT YOURSELF Easy use Save Money As Save Time low $1095 Smithy write Smithy Dept MA Latho l 3023 E 2nd Street Tho Dalles DR 97058 January1994 59 new concert scale kits Easy assemb e Highly detailed polystyrene foam novice advanced builder Powered static Some capable 2 channel radio control very light 5oz series ds ins Safety/Shaw Continued page 54 FREE Fact Kit Call 1 -800-345-6342 Aak operator MA
Edition: Model Aviation - 1994/01
Page Numbers: 6, 54, 59
Gary Shaw LISTEN TO THAT FLUTTER Its always pleasure receive mail around country especially mail arrives form club newsletters very informative newsletter Texarkana RIC Flyer produced hard-working members Texarkana RIC Flying Club Inc edited Joe Cole particular note August newsletter article Ted Cannelongo describing identify correct control surface flutter serious condition can lead inflight aircraft failure Since Ive personally experienced quickly surface flutter can tear airplane apart can really relate what Ted say article times flying field Ive noticed models flying buzzing sound also known flutter recently models happened own As may already know flutter can serious problem correct because cause can very difficult find Some modelers unsuccessful solving problem just continue fly model slower speed minimize effects accepting problem unsolvable After talking model manufacturers researching model aviation magazines books model assembly instructions assembled checklist possible causes flutter Hopefully can save some little grief possibly help prevent accident As mentioned control surface flutter generally indicated low-frequency buzzing sound hear sound flying model land model immediately Flutter can quickly destroy components airplane know deterioration component can probably will result crash Find cause correct it fluttered once will flutter again Continuing fly model flutter accident waiting happen must test-fly model after attempting cure Continued page 54 _ I__________ 6 Model Aviation s Stetfens invention starts model safely Bob Taylors invention similar James ITOR R/C Products Inc MV-i TYPHOON Now choose 3 versionsl size style class construction Wing Area 909 Square Inch Wing Span 70 /2 nch Length 68 /2 /4 Inch Advanced technology design precision aerobat ics competition Light weight all-balsa construction plug-in adjustable wing stab panels Detailed plans three different versions Plans 909 Sq Version 2 Sheets $1495 Plans 1000 Sq Version 2 Sheets $1495 Plans 1085 Sq 0 Version 2 Sheets $1595 Fiberglass Cowl $1995 Clear Canopy $1495 Rib/Former Kh Specify Version$12500 PLUG-IN WING ADJUSTER KIT Two glass-tilled nylon brackets used wing panel key wing panel front rear allowing quick accurate adjustment straight flight Complete hardware instructions 2-Pack wing panel $795 4-Pack both wing panels $1295 PLUG-IN ADJUSTABLE STAB KIT Now can optimize stab incidence best flight characteristicat pair glass-tilled nylon adjusters included provide simple quick micro screw adjustment smaller front stab tube Main tube alloy aluminum matching phenolic socket Complete Package $995 WING TUBE AND SOCKET SETS Aluminum alloy tubing plug-in wings Includes special slip-fit phenolic sQckets build wing panels Special lengths order 7/16 dia x 2 ft precision fit sockets$695 5/8 dia x 2ff precision fit sockets$1095 7/8 dia x 2 ft precision fit sockets$1195 1-1/4 dia x 2 ft$995 1-1/2 dia x 3 ft$1495 GEITO1I 3713 RIC Products Inc Pompano Drive Pensacola FL 32514 904/494-0203 904/494-0207 VISA/MasterCard Welcomed $400 per item S5H esdents add 6% Tax SafetylShaw Continued page 6 problem try keep away pit spectator areas test-fly during off-hours few people field model vibrates apart crashes dont want come down populated area field begin diagnosing problem first check servo mounts deterioration often said indication surface causing flutter successful some causes flutter along some solutions 1 Pushrod stop flexing linkage 2 Play clevis pin control horn attachment Replace horn use different hole allows no play 3 Play clevis pin servo arm attachment Replace servo arm use another hole no play 4 Sloppy Z-bend fit servo arm servo arm hole too large Replace servo arm use another hole no play 5 Control horns solidly mounted Use CyA cyanoacrylate glue harden wood sure screws secure 6 Side play plastic pushrod caused tight bends Reroute pushrod 7 Elasticity flexible plastic pushrods Use heavy duty flexible rods wood fiberglass pushrods Dont use control wire can bend over 300 8 Improperly mounted flexible pushrods insufficiently supported along center portion Flexible pushrods must secured increments along entire length just ends 9 Poorly glued aileron torque rod Drill proper size hole use sufficient epoxy torque rod goes aileron wood 10 Poorly glued elevator joiner wire Drill proper size hole use sufficient epoxy 11 Excessive hinge gap Remove hinges reinstall less gap and/or iron plastic film strip seal gap 12 Aileron flex due wood too soft Build install new stiffer ailerons 13 Insufficient poorly fastened hinges 14 Hinges installed too far end control surfaces Install hinges according plans 15 Excessive play backlash servo gears Replace servo install new gears 16 Poor servo mounting Remount according manufacturers instructions Using checklist solved flutter problem model drilled holes aileron servo arm make easier install Z-bend rods however drilled too large allowing fraction millimeter play linkage Simply drilling proper-size hole replacement servo arm solved problem wouldnt have believed fraction millimeter play could cause such flutter hadnt seen myself reminded attention smallest details important building model safe fun fly Field Box Starters several recent columns Ive indicated hands fingers body parts prop continue hold lead injuries described mail Ive received letter James E Steffens Hendersonville North Carolina provided some insight new invention hes developed currently using protect himself spinning propellers during startups After having nicked spinning prop devised unit mounts field box As can see enclosed photo never have part anatomy exposed propeller starting motor Instead pushing starter onto spinner push spinner onto starter switch engaged long spinner pressed starter cone have successfully used unit year half would never consider going back starting motor front plane Continued page 59 AUTOinVAC SYSTEM new fully automatic vacuum bagging system completely self monitoring has fully adjustable vacuum switch large capacity reservoir prevents frequent cycling vacuum pump Auto-Vac kit comes completely assembled mounted wood base ready use Included kit E-Z Vac II electric pump rated 24 Hg adjustable vacuum switch vacuum gauge large capacity reservoir check valve neoprene tubing E-Z Vat connector two Quick-Lock seals 9 18~EIetJ wide bagging tube 9 15 wide breather cloth set vacuum230 V System available $700 5&H checkfMo/coD bagging instructionsliSA accepted tA residents add 775% Tan CA 92714 14 250-0307 54 Model Aviation r much less cumbersome Coincidentally week after having received James letter Bob Taylor Gilbert Arizona sent letter describing similar invention also mounts field box used start aircraft James Bobs inventions almost identical very practical Since both have expressed desire market inventions since Im sure similar piece equipment exists may want write gentlemen request yourself James E Steffens 6 Samara Dr Hendersonville NC 28739-7125 Bob Taylor 809 5 Cancun Dr Gilbert AZ 85234 Dos Don ts Around Engines Hot off press Belleville RIC Flyers club newsletter forwarded editor Darwin Evelsizer entitled Transmitter scanning pages ran across excellent column Jules Hunkovic provides some applicable dos don ts should consider time get ready start model engine 1 Dont try start flooded engine electric starter Remove glow plug fuel line disconnected hit [the engine] starter few seconds expel excess fuel Make sure have glow plug washer removed head wont pop out smack face 2 Dont make adjustments high- low-speed needles front aircraft Get behind model make adjustments after startup 3 Do start engine half throttle less 4 Do perform frequent checks engine mounts ensure engine mounting screws tightened little vibration can cost glow plugs mufflers damage radios 5 Do check propeller damage after rough landing crash nothing else least wipe dirt off prop behind spinner 6 Do ask help having problems would surprised quickly someone else can recognize obvious problems may have overlooked As mentioned last column family have recently relocated Orlando Florida weather great year-round flying fresh-squeezed orange juice fantastic new address Safety Comes First Gary Shaw 1013 Vernon Loop Oviedo FL 32765 Until next month may air smooth landings light CLASS FREE FLIGHT MODEL KIT $ 3395 POSTPAID -v L 7 Sparrow Hawk P-30 BY JOHN ODWYER WINNING SINCE 1982 REDI-CUT RIBS PREFORMED TUBE MFG BY MODEL AIRCRAFT LABS i08 S LEE STREET IRVING TEXAS 75ttt TOUCH AIR Ii POWER full-spectrum engine fuel treatment specially formulated RIC models Bonds electro chemically metal smooth pitted surfaces Reduce friction & heat Improves performance Reduce engine wear ces repair costs CAN BE USED AS RUN-OFF OIL TO CLEAN ENGINES BEFOREAFTER AVAILABLE IN HANDY SQUEEZE BOTTLES OZ -5595 -$1295 Ask Boca Bearings local hobby shop Call 14071 998-0004 Toll-free USA 800 3323258 Toll-free Canada 800 553-3256 Fax Order 14071 998-0119 send $310 catalog Nawe Addreaa CityState ____ Zip Send Boca Bearing Dept C 23t4 7140W Palmetto Park Rd Paton FL 33433 IT YOURSELF Easy use Save Money As Save Time low $1095 Smithy write Smithy Dept MA Latho l 3023 E 2nd Street Tho Dalles DR 97058 January1994 59 new concert scale kits Easy assemb e Highly detailed polystyrene foam novice advanced builder Powered static Some capable 2 channel radio control very light 5oz series ds ins Safety/Shaw Continued page 54 FREE Fact Kit Call 1 -800-345-6342 Aak operator MA
Edition: Model Aviation - 1994/01
Page Numbers: 6, 54, 59
Gary Shaw LISTEN TO THAT FLUTTER Its always pleasure receive mail around country especially mail arrives form club newsletters very informative newsletter Texarkana RIC Flyer produced hard-working members Texarkana RIC Flying Club Inc edited Joe Cole particular note August newsletter article Ted Cannelongo describing identify correct control surface flutter serious condition can lead inflight aircraft failure Since Ive personally experienced quickly surface flutter can tear airplane apart can really relate what Ted say article times flying field Ive noticed models flying buzzing sound also known flutter recently models happened own As may already know flutter can serious problem correct because cause can very difficult find Some modelers unsuccessful solving problem just continue fly model slower speed minimize effects accepting problem unsolvable After talking model manufacturers researching model aviation magazines books model assembly instructions assembled checklist possible causes flutter Hopefully can save some little grief possibly help prevent accident As mentioned control surface flutter generally indicated low-frequency buzzing sound hear sound flying model land model immediately Flutter can quickly destroy components airplane know deterioration component can probably will result crash Find cause correct it fluttered once will flutter again Continuing fly model flutter accident waiting happen must test-fly model after attempting cure Continued page 54 _ I__________ 6 Model Aviation s Stetfens invention starts model safely Bob Taylors invention similar James ITOR R/C Products Inc MV-i TYPHOON Now choose 3 versionsl size style class construction Wing Area 909 Square Inch Wing Span 70 /2 nch Length 68 /2 /4 Inch Advanced technology design precision aerobat ics competition Light weight all-balsa construction plug-in adjustable wing stab panels Detailed plans three different versions Plans 909 Sq Version 2 Sheets $1495 Plans 1000 Sq Version 2 Sheets $1495 Plans 1085 Sq 0 Version 2 Sheets $1595 Fiberglass Cowl $1995 Clear Canopy $1495 Rib/Former Kh Specify Version$12500 PLUG-IN WING ADJUSTER KIT Two glass-tilled nylon brackets used wing panel key wing panel front rear allowing quick accurate adjustment straight flight Complete hardware instructions 2-Pack wing panel $795 4-Pack both wing panels $1295 PLUG-IN ADJUSTABLE STAB KIT Now can optimize stab incidence best flight characteristicat pair glass-tilled nylon adjusters included provide simple quick micro screw adjustment smaller front stab tube Main tube alloy aluminum matching phenolic socket Complete Package $995 WING TUBE AND SOCKET SETS Aluminum alloy tubing plug-in wings Includes special slip-fit phenolic sQckets build wing panels Special lengths order 7/16 dia x 2 ft precision fit sockets$695 5/8 dia x 2ff precision fit sockets$1095 7/8 dia x 2 ft precision fit sockets$1195 1-1/4 dia x 2 ft$995 1-1/2 dia x 3 ft$1495 GEITO1I 3713 RIC Products Inc Pompano Drive Pensacola FL 32514 904/494-0203 904/494-0207 VISA/MasterCard Welcomed $400 per item S5H esdents add 6% Tax SafetylShaw Continued page 6 problem try keep away pit spectator areas test-fly during off-hours few people field model vibrates apart crashes dont want come down populated area field begin diagnosing problem first check servo mounts deterioration often said indication surface causing flutter successful some causes flutter along some solutions 1 Pushrod stop flexing linkage 2 Play clevis pin control horn attachment Replace horn use different hole allows no play 3 Play clevis pin servo arm attachment Replace servo arm use another hole no play 4 Sloppy Z-bend fit servo arm servo arm hole too large Replace servo arm use another hole no play 5 Control horns solidly mounted Use CyA cyanoacrylate glue harden wood sure screws secure 6 Side play plastic pushrod caused tight bends Reroute pushrod 7 Elasticity flexible plastic pushrods Use heavy duty flexible rods wood fiberglass pushrods Dont use control wire can bend over 300 8 Improperly mounted flexible pushrods insufficiently supported along center portion Flexible pushrods must secured increments along entire length just ends 9 Poorly glued aileron torque rod Drill proper size hole use sufficient epoxy torque rod goes aileron wood 10 Poorly glued elevator joiner wire Drill proper size hole use sufficient epoxy 11 Excessive hinge gap Remove hinges reinstall less gap and/or iron plastic film strip seal gap 12 Aileron flex due wood too soft Build install new stiffer ailerons 13 Insufficient poorly fastened hinges 14 Hinges installed too far end control surfaces Install hinges according plans 15 Excessive play backlash servo gears Replace servo install new gears 16 Poor servo mounting Remount according manufacturers instructions Using checklist solved flutter problem model drilled holes aileron servo arm make easier install Z-bend rods however drilled too large allowing fraction millimeter play linkage Simply drilling proper-size hole replacement servo arm solved problem wouldnt have believed fraction millimeter play could cause such flutter hadnt seen myself reminded attention smallest details important building model safe fun fly Field Box Starters several recent columns Ive indicated hands fingers body parts prop continue hold lead injuries described mail Ive received letter James E Steffens Hendersonville North Carolina provided some insight new invention hes developed currently using protect himself spinning propellers during startups After having nicked spinning prop devised unit mounts field box As can see enclosed photo never have part anatomy exposed propeller starting motor Instead pushing starter onto spinner push spinner onto starter switch engaged long spinner pressed starter cone have successfully used unit year half would never consider going back starting motor front plane Continued page 59 AUTOinVAC SYSTEM new fully automatic vacuum bagging system completely self monitoring has fully adjustable vacuum switch large capacity reservoir prevents frequent cycling vacuum pump Auto-Vac kit comes completely assembled mounted wood base ready use Included kit E-Z Vac II electric pump rated 24 Hg adjustable vacuum switch vacuum gauge large capacity reservoir check valve neoprene tubing E-Z Vat connector two Quick-Lock seals 9 18~EIetJ wide bagging tube 9 15 wide breather cloth set vacuum230 V System available $700 5&H checkfMo/coD bagging instructionsliSA accepted tA residents add 775% Tan CA 92714 14 250-0307 54 Model Aviation r much less cumbersome Coincidentally week after having received James letter Bob Taylor Gilbert Arizona sent letter describing similar invention also mounts field box used start aircraft James Bobs inventions almost identical very practical Since both have expressed desire market inventions since Im sure similar piece equipment exists may want write gentlemen request yourself James E Steffens 6 Samara Dr Hendersonville NC 28739-7125 Bob Taylor 809 5 Cancun Dr Gilbert AZ 85234 Dos Don ts Around Engines Hot off press Belleville RIC Flyers club newsletter forwarded editor Darwin Evelsizer entitled Transmitter scanning pages ran across excellent column Jules Hunkovic provides some applicable dos don ts should consider time get ready start model engine 1 Dont try start flooded engine electric starter Remove glow plug fuel line disconnected hit [the engine] starter few seconds expel excess fuel Make sure have glow plug washer removed head wont pop out smack face 2 Dont make adjustments high- low-speed needles front aircraft Get behind model make adjustments after startup 3 Do start engine half throttle less 4 Do perform frequent checks engine mounts ensure engine mounting screws tightened little vibration can cost glow plugs mufflers damage radios 5 Do check propeller damage after rough landing crash nothing else least wipe dirt off prop behind spinner 6 Do ask help having problems would surprised quickly someone else can recognize obvious problems may have overlooked As mentioned last column family have recently relocated Orlando Florida weather great year-round flying fresh-squeezed orange juice fantastic new address Safety Comes First Gary Shaw 1013 Vernon Loop Oviedo FL 32765 Until next month may air smooth landings light CLASS FREE FLIGHT MODEL KIT $ 3395 POSTPAID -v L 7 Sparrow Hawk P-30 BY JOHN ODWYER WINNING SINCE 1982 REDI-CUT RIBS PREFORMED TUBE MFG BY MODEL AIRCRAFT LABS i08 S LEE STREET IRVING TEXAS 75ttt TOUCH AIR Ii POWER full-spectrum engine fuel treatment specially formulated RIC models Bonds electro chemically metal smooth pitted surfaces Reduce friction & heat Improves performance Reduce engine wear ces repair costs CAN BE USED AS RUN-OFF OIL TO CLEAN ENGINES BEFOREAFTER AVAILABLE IN HANDY SQUEEZE BOTTLES OZ -5595 -$1295 Ask Boca Bearings local hobby shop Call 14071 998-0004 Toll-free USA 800 3323258 Toll-free Canada 800 553-3256 Fax Order 14071 998-0119 send $310 catalog Nawe Addreaa CityState ____ Zip Send Boca Bearing Dept C 23t4 7140W Palmetto Park Rd Paton FL 33433 IT YOURSELF Easy use Save Money As Save Time low $1095 Smithy write Smithy Dept MA Latho l 3023 E 2nd Street Tho Dalles DR 97058 January1994 59 new concert scale kits Easy assemb e Highly detailed polystyrene foam novice advanced builder Powered static Some capable 2 channel radio control very light 5oz series ds ins Safety/Shaw Continued page 54 FREE Fact Kit Call 1 -800-345-6342 Aak operator MA