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Radio Control: Aerobatics

Author: R. Allison


Edition: Model Aviation - 1997/02
Page Numbers: 69, 70, 75, 76, 77

RADIO CONTROL AEROBATICS WE VISITED question building models versus buying same awhile back examined philosophical angles moral dilemma practical side cost/benefit ratio etc Still however acquire model thing almost us must Buy build still have put equipment set up properly Equipment installation setup second-most-critical building step determining well finished model performs after fuselage/surface alignment trammeling servo hookup made cable run rigged control horn mount support/retainer installed flight-critical should perfect can make because little mistake miscalculation area can kill pride-and-joy small nonfatal miscues much common may have effect entirely out-of-proportion perceived size spring Im called help trim unruly models local practice field often find tiny setup errors difference between off board keeper unfairlylabeled dog minor items pointed out owner source difficulty usual reaction disbelief something insignificant could cause much grief Aerobatic flight exercise airborne geometric precision fractal-like manner geometry repeats macro micro back again very elegant interconnected fashion craft themselves models symmetry measured remeasured during assembly rigged hopefully exact angles thrust incidence smallest scale control systems arcs angles deflections repeat obeisance geometric ideal something awry upper level continuum cause very often lies below recall nicely-built model Sportsman owner verge mental instability because severe looptracking problem static-balanced model sealed hinge gaps weighted supposed heavy wing shimmed wing saddleall no avail first things checked elevator control horns found source problem immediately February 1997 69 Surface Deflection Indicator can valuable tool Central Hobbies air filter shown installed VS 12OSC achieving right setup Tettra unit shown Filter high-quality precision fit MK ball-bearing link 2mm threaded rods Its expensive heavy-duty slop-free Scott Colvin engrossed last-minute surgery Boxer Marymoor WA contest As per standard practice long 4-40 bolts nylon horn-ends mounted dowel hard-points both elevators both elevators trailed perfect alignment neutral positionwhich far pilot checked However airplanes dont loop elevators neutral friend overlooked simple geometry matter horns misaligned clevis attachment-point 1A6 inch front hinge line other equal distance behind addition attachment-point 1/i6 higher other Control horns matching surfaces like elevators ailerons must matched clevis attachment-point height displacement fore aft hingeline Any deviation will cause unequal control-surface travel addition attachment-point hole little nylon horn-end centered directly over hinge line result will differential travel up down vice-versa because linear motion pushrod pull cable converted rotary motion horn horn end travels through arc clevis attachment-point front hinge line pushrod below surface result will up travel down converse being true attachment-points aligned aft hingeline Before advent computer radios myriad adjustment features simple technique common method obtaining adjusting aileron differential friends case elevator half deflecting farther up down other half deflecting farther down up since horn shorter side also deflecting greater amount place elevators properly aligned neutral differences significant amounting 450 full travel Several tweaks pair pliers couple turns low horn-end squared away problem unshimmed wing saddle $7995 51 Symmetrical wing extra light 35 50 engines CHASOS constant cord wing Great low wing trainer Also available 25 size $5995 FREE shipping pIn 500 ipperscom/gns/homehtmplus 500 shipiing G&S Hobbies 967 Hfinoock Bullhead dy Az 86442 520-758-1100 O1 1-800-628-6065 LIQUI9ATIOH SALE PlTY PWUY 95 UTTEK CHAOS. $6996 TKAINEK 40$3995 96 PI# PEE$13995 LOAPSTAK 40 5 KKAFTY 60 995 ESCAPE XLT $5995 KILLEK PEE 10$16995 36 FLOATS$1811 plus shippiiiq CALL FOR CATALOG take CREDIT CARDS 70 Model Aviation OVP 40 deweighted wing model tracked beautifully fix took ten minutes doing right first time would have taken no extra timeand would have saved weeks hair-pulling separate servos used matched surfaces common aileron setups increasingly popular elevator setups problem compounded geometry hornends must precisely matched must geometry servo wheel arm Servos provide rotary output motion converted linear motion via cable rod reconverted rotary motion control horn servo takeoff-point travels arc either side neutral does control horn attachment-point both points connected cable rod fixed length Differential travel now possible either end hookup further complication radius output arc radius control horn arc both adjustable servo output wheel arm may regarded hingeline servo end neutral arm attachment-point wheel arm should perpendicular servo centerline arc travelsegments either side neutral equal linear motion produced control horn equal either side ______________________________ neutral position pre-computer radio era ideal lineup right angles centered takeoff points sometimes took major fussing achieve Todays sophisticated equipment makes easy doperhaps too easy real tendency whizbang 90s depend electronics total exclusion mechanical Servo traveling far enough direction No problem Too much travel both ways No problem Surfaces centered neutral Dont touch clevisjust beep beep beep troubles away problem approach is____________________________ can letter mu model Simple IL a44pci Ca sure Sensitivemajor decals 11 sizes Water Transfer11 great colors NORTHEAST SCREEN GRAPHICS PO BOX 304 EAST LONGMEAOOW MA 01028 TEL 413-025-4110 FAX 413-525-7794 February 1997 75 No 322 No 323 K&S ENGINEERING 6917 W 59th St Chicago IL 60638 WIRE BENDER 586-8503 SEND $100 FOR PRICE LIST AND CATALOG No 324 five minutes can upgrade stan dard Futaba Airtronics servos ball bearing servos new EMS Ball Bearing Conversion Kit New casetopsareaccuratelymoldedofsupertough glass filled fuel-proof Celcon include top quality stainless steel ball bearing servo output shaft * Stops case top and/or plastic bushing wear * Prevents output gear shaft shimmy * Reduces friction improves servo centering * Enhances performance airplanes boats & cars * Mandatory helicopter servos * Free output arm provided case top * Guaranteed against breakage year * pay $3995 $2995 1Fits FUTABA 528/5128 S38/S 138 orS48/S148 Servos set 4$2595 BBC-2As above set I$695 RRC3Fits AIRTRONICS 94102 Servos setof4$2595 4As above set 1$695 Ball Bearing Only JR 501 507 RCDAPOLLO 05 10 FOCUS HS300 HS500 ACE330342 342HS TOWER TS-51 Servos set 4$1995 Add $300 Shipping Handling allorders fy14 692-1393 Info Onlycalifornia Residents Add 775% Sales Tax 800 845-8978 Orders OnlyVISA MASTORCARD Accepted ~-N-SAFE MOUNTS special ribbed o-Damp Grommets Engine J always safely retained Very effective vibration reduction dramatic decrease engine shake Light weight aluminum beam mounts 120 4strokes available Also available aluminum radial mount 60 2-strokes Soft-N-Sale 120 beam mount complete 95 Soft-N-safe 60 radial mount complete 495 Soft-NSafe Replacement Iso-Damp Grommets Pkg 4 60$295 Pkg 4 120$595 ADJUSTABLE BEAM SOFT-N-SAFE FOR 40 TO 91 ENGINES beam type soft-mount uses Soft-N-Safe ribbed grommets vibration isolation providing effectiv vibration reduction decreased engine shake Adjustable engines 40s 91s NEW NOSE-RING KIT Everything need set up front soft-mount support Includes special soft grommet epoxy board hardware LJ $695 RADIAL ISO-MOUNTS Conventional backplate type mount using four Lord-Type 60-Duro Iso-Mounts Optimized lowest vibration transmission airframe reduced engine shake 60 2-strokes Radial lao-mount complete$1495 Iso-Mounts Package 4$995 5/8 diameter x 1/2 long 8-32 female end 8-32 x 1/2 male other end SO-Duro rubber 3713 Pompano Drive Pensacola FL 32514 GATORPhone 904 494-0203 RIC Products IncVISA/MasterCard Welcomed Readenta add 6% Tax radio can never correct poor mechanical hookup geometry conditions instance friends elevator problem would never have amenable such electronic fix Another very common difficulty arises separate servos must matched aileron installation builder may choose electronically limit extend travel substantial amount both units rather recenter mechanically adjust arm result being travel equal both servos transit times trim rates differ result might subtle malaisea trim wanders slightly different roll rate direction would avoid electronic pitfalls route simple Make mechanical setup geometrically pure possible Ensure control horns positioned identically attachment-points equal height servo arms matched takeoff points alignment Use radio features intended proper order First make absolutely certain start clean setupnever try reuse template another model possibilities confusion enormous Use servo reversing feature obtain proper travel directions inhibit activate assign switches set final configuration radio has centering adjustment feature set servo centers match pure perpendicular takeoff point servos Make especially sure paired servos ailerons matched type speed centers Make pushrod cable length adjustments align surfaces precisely using devises threaded ball-links make fine mechanical adjustments very end step might get away using servo centering feature again needed adjustment very tiny oneless clevis link REGAIN CONTROL iT7 Losing control can nightmare wrong response given command can take its toll model nerves wallet Radio South know feel about hobby too avid RC enthusiasts nearly half century combined experience modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical in-house radio service can depend Radio South customer satisfaction isnt just motto Its way life Let us put back control IZJi5 fjAIR7RONICS 3702 N Pace Pensacola FL 32505 repair information 904 434-0909 1-800-962-7802 Toll Free Order Line lOrders Only Please II 76 Model Aviation Yoroa oa UR mechanical setup complete check everything through range travel surfacedeflection indicators market Pay special attention paired surfaces like ailerons elevators Absolute precision almost good enough quite Check again re-check Now time use travel-adjustment feature match travels paired servos plugged different channels point basic setup done can beep away hearts delightsetting rate switches aileron differential exponential trace rates like secure knowledge no dark secrets hiding basement identical things happening both sides airplane will find mixing programs differential adjustments other sophisticated features new Zoomie 7 8 9 10 XYZ radio now work intended make much sense boot new product front two new items interest first beautifully made aluminum air filter YS 120 filter fits NC SC SF versions engine have no idea about AC 140 FZ no longer own example former have yet examine latter mounts securely single setscrew claim nearly zero rpm drop no transition problems little jewel being marketed exclusively Al Coomber Central Hobbies Billings Montana price $1995 can contact him 800 7235937 second item new MK ballbearing link part #0806 very heavy-duty high-quality link 2mm rods average retail should about ten bucks adjuster rod included friction-free hookup device should available wherever MK items sold example shown photo provided courtesy Al Coomber Central Hobbies JWVJ1 qu&IFwEUIU4ypULwiwiAUMw5y*VwEiqilui~ Matched 1700 SCRC md Cells$500 SANYO N1700 SCRC md Cells$450 SANYO N1400 SCR md Cells$300 SANYO NiOQO SCR lnd Cells$350 SANYO N800 AR Ind Cells$350 SANYO KR600 AE Ind Cells$250 SANYO N270 AA Ind Cells$250 SANYO 600 AA Rechargeable$150 SAFT Full C Rechargeable Batteries$100 Ea 4 Cell 270 AA Receiver Pk$1000 5 Cell 1000 AE Receiver Pk$1800 Connectors$300 PR AII-IDIkILCDC -DSAVAIL Best-SeIhng Spa* lgnItIon w SYNCRO SPARK MICROPROCESSOR ELECTRONIC liMING CONTROL EASY TO INSTALL PLUGS BETWEEN YOUR PULSE SWITCH AND IGN SYSTEM OVING PARTS TO WEAR OUT OR GET OUT OF ADJUSTMENT SPARK TIMING WITH EACH ENGINE REVOLUTN COMPLETELY STABLE TIMING IS ROCK SOLID AND DOES NOT JUMP AROUND RETRO FIT TO MOST ALL BRANDS OF ADD-ON IGNITION SYSTEMS WITH HALL EFFECT TRIGGER WILL NOT WORK WITH REICHMUTH OR PRO SPARK SYSTEMS WE HAVE ALL PARTS TO CONVERT YOUR 28 & 32CC MCCULLOCH WEED TRIMMER ENGINES TO AIRPLANE USE WITH CDI IGNITION WE NOW HAVE THE JUMP START SYSTEM FOR THE ZENOAH G 45 & 62CC AND Z445 TWIN AND THE U S ENGINES 35 & 41CC WE HAVE THE RIM FIRE 1/4 x 32 SPARK PLUGS IN STOCK $1295 PLUS SHIPPING AND HANDLING MANY MORE ACCESSORIES PARTS CUSTOM INSTALLATION SEND $2 FOR PRICE LIST eflec OflCtIMflIkiOTOI tIIflkiOI February 1997 77 $3995 PLUS SHIPPING & HANDUNG $16495 SPECIFICATIONS Engine- 25 -402 cycle 40 48 4-Cycle Radio 3-Channel B&M MODEL Co 290W 1050 N LAYION 1fF 84041 PHONE 8011544-5689 Call Send $300 Color Brochure $3%cnio ro Orar ADD 11395 SHIPPINGIHANDLING UT RES ADD 625% TAX

Author: R. Allison


Edition: Model Aviation - 1997/02
Page Numbers: 69, 70, 75, 76, 77

RADIO CONTROL AEROBATICS WE VISITED question building models versus buying same awhile back examined philosophical angles moral dilemma practical side cost/benefit ratio etc Still however acquire model thing almost us must Buy build still have put equipment set up properly Equipment installation setup second-most-critical building step determining well finished model performs after fuselage/surface alignment trammeling servo hookup made cable run rigged control horn mount support/retainer installed flight-critical should perfect can make because little mistake miscalculation area can kill pride-and-joy small nonfatal miscues much common may have effect entirely out-of-proportion perceived size spring Im called help trim unruly models local practice field often find tiny setup errors difference between off board keeper unfairlylabeled dog minor items pointed out owner source difficulty usual reaction disbelief something insignificant could cause much grief Aerobatic flight exercise airborne geometric precision fractal-like manner geometry repeats macro micro back again very elegant interconnected fashion craft themselves models symmetry measured remeasured during assembly rigged hopefully exact angles thrust incidence smallest scale control systems arcs angles deflections repeat obeisance geometric ideal something awry upper level continuum cause very often lies below recall nicely-built model Sportsman owner verge mental instability because severe looptracking problem static-balanced model sealed hinge gaps weighted supposed heavy wing shimmed wing saddleall no avail first things checked elevator control horns found source problem immediately February 1997 69 Surface Deflection Indicator can valuable tool Central Hobbies air filter shown installed VS 12OSC achieving right setup Tettra unit shown Filter high-quality precision fit MK ball-bearing link 2mm threaded rods Its expensive heavy-duty slop-free Scott Colvin engrossed last-minute surgery Boxer Marymoor WA contest As per standard practice long 4-40 bolts nylon horn-ends mounted dowel hard-points both elevators both elevators trailed perfect alignment neutral positionwhich far pilot checked However airplanes dont loop elevators neutral friend overlooked simple geometry matter horns misaligned clevis attachment-point 1A6 inch front hinge line other equal distance behind addition attachment-point 1/i6 higher other Control horns matching surfaces like elevators ailerons must matched clevis attachment-point height displacement fore aft hingeline Any deviation will cause unequal control-surface travel addition attachment-point hole little nylon horn-end centered directly over hinge line result will differential travel up down vice-versa because linear motion pushrod pull cable converted rotary motion horn horn end travels through arc clevis attachment-point front hinge line pushrod below surface result will up travel down converse being true attachment-points aligned aft hingeline Before advent computer radios myriad adjustment features simple technique common method obtaining adjusting aileron differential friends case elevator half deflecting farther up down other half deflecting farther down up since horn shorter side also deflecting greater amount place elevators properly aligned neutral differences significant amounting 450 full travel Several tweaks pair pliers couple turns low horn-end squared away problem unshimmed wing saddle $7995 51 Symmetrical wing extra light 35 50 engines CHASOS constant cord wing Great low wing trainer Also available 25 size $5995 FREE shipping pIn 500 ipperscom/gns/homehtmplus 500 shipiing G&S Hobbies 967 Hfinoock Bullhead dy Az 86442 520-758-1100 O1 1-800-628-6065 LIQUI9ATIOH SALE PlTY PWUY 95 UTTEK CHAOS. $6996 TKAINEK 40$3995 96 PI# PEE$13995 LOAPSTAK 40 5 KKAFTY 60 995 ESCAPE XLT $5995 KILLEK PEE 10$16995 36 FLOATS$1811 plus shippiiiq CALL FOR CATALOG take CREDIT CARDS 70 Model Aviation OVP 40 deweighted wing model tracked beautifully fix took ten minutes doing right first time would have taken no extra timeand would have saved weeks hair-pulling separate servos used matched surfaces common aileron setups increasingly popular elevator setups problem compounded geometry hornends must precisely matched must geometry servo wheel arm Servos provide rotary output motion converted linear motion via cable rod reconverted rotary motion control horn servo takeoff-point travels arc either side neutral does control horn attachment-point both points connected cable rod fixed length Differential travel now possible either end hookup further complication radius output arc radius control horn arc both adjustable servo output wheel arm may regarded hingeline servo end neutral arm attachment-point wheel arm should perpendicular servo centerline arc travelsegments either side neutral equal linear motion produced control horn equal either side ______________________________ neutral position pre-computer radio era ideal lineup right angles centered takeoff points sometimes took major fussing achieve Todays sophisticated equipment makes easy doperhaps too easy real tendency whizbang 90s depend electronics total exclusion mechanical Servo traveling far enough direction No problem Too much travel both ways No problem Surfaces centered neutral Dont touch clevisjust beep beep beep troubles away problem approach is____________________________ can letter mu model Simple IL a44pci Ca sure Sensitivemajor decals 11 sizes Water Transfer11 great colors NORTHEAST SCREEN GRAPHICS PO BOX 304 EAST LONGMEAOOW MA 01028 TEL 413-025-4110 FAX 413-525-7794 February 1997 75 No 322 No 323 K&S ENGINEERING 6917 W 59th St Chicago IL 60638 WIRE BENDER 586-8503 SEND $100 FOR PRICE LIST AND CATALOG No 324 five minutes can upgrade stan dard Futaba Airtronics servos ball bearing servos new EMS Ball Bearing Conversion Kit New casetopsareaccuratelymoldedofsupertough glass filled fuel-proof Celcon include top quality stainless steel ball bearing servo output shaft * Stops case top and/or plastic bushing wear * Prevents output gear shaft shimmy * Reduces friction improves servo centering * Enhances performance airplanes boats & cars * Mandatory helicopter servos * Free output arm provided case top * Guaranteed against breakage year * pay $3995 $2995 1Fits FUTABA 528/5128 S38/S 138 orS48/S148 Servos set 4$2595 BBC-2As above set I$695 RRC3Fits AIRTRONICS 94102 Servos setof4$2595 4As above set 1$695 Ball Bearing Only JR 501 507 RCDAPOLLO 05 10 FOCUS HS300 HS500 ACE330342 342HS TOWER TS-51 Servos set 4$1995 Add $300 Shipping Handling allorders fy14 692-1393 Info Onlycalifornia Residents Add 775% Sales Tax 800 845-8978 Orders OnlyVISA MASTORCARD Accepted ~-N-SAFE MOUNTS special ribbed o-Damp Grommets Engine J always safely retained Very effective vibration reduction dramatic decrease engine shake Light weight aluminum beam mounts 120 4strokes available Also available aluminum radial mount 60 2-strokes Soft-N-Sale 120 beam mount complete 95 Soft-N-safe 60 radial mount complete 495 Soft-NSafe Replacement Iso-Damp Grommets Pkg 4 60$295 Pkg 4 120$595 ADJUSTABLE BEAM SOFT-N-SAFE FOR 40 TO 91 ENGINES beam type soft-mount uses Soft-N-Safe ribbed grommets vibration isolation providing effectiv vibration reduction decreased engine shake Adjustable engines 40s 91s NEW NOSE-RING KIT Everything need set up front soft-mount support Includes special soft grommet epoxy board hardware LJ $695 RADIAL ISO-MOUNTS Conventional backplate type mount using four Lord-Type 60-Duro Iso-Mounts Optimized lowest vibration transmission airframe reduced engine shake 60 2-strokes Radial lao-mount complete$1495 Iso-Mounts Package 4$995 5/8 diameter x 1/2 long 8-32 female end 8-32 x 1/2 male other end SO-Duro rubber 3713 Pompano Drive Pensacola FL 32514 GATORPhone 904 494-0203 RIC Products IncVISA/MasterCard Welcomed Readenta add 6% Tax radio can never correct poor mechanical hookup geometry conditions instance friends elevator problem would never have amenable such electronic fix Another very common difficulty arises separate servos must matched aileron installation builder may choose electronically limit extend travel substantial amount both units rather recenter mechanically adjust arm result being travel equal both servos transit times trim rates differ result might subtle malaisea trim wanders slightly different roll rate direction would avoid electronic pitfalls route simple Make mechanical setup geometrically pure possible Ensure control horns positioned identically attachment-points equal height servo arms matched takeoff points alignment Use radio features intended proper order First make absolutely certain start clean setupnever try reuse template another model possibilities confusion enormous Use servo reversing feature obtain proper travel directions inhibit activate assign switches set final configuration radio has centering adjustment feature set servo centers match pure perpendicular takeoff point servos Make especially sure paired servos ailerons matched type speed centers Make pushrod cable length adjustments align surfaces precisely using devises threaded ball-links make fine mechanical adjustments very end step might get away using servo centering feature again needed adjustment very tiny oneless clevis link REGAIN CONTROL iT7 Losing control can nightmare wrong response given command can take its toll model nerves wallet Radio South know feel about hobby too avid RC enthusiasts nearly half century combined experience modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical in-house radio service can depend Radio South customer satisfaction isnt just motto Its way life Let us put back control IZJi5 fjAIR7RONICS 3702 N Pace Pensacola FL 32505 repair information 904 434-0909 1-800-962-7802 Toll Free Order Line lOrders Only Please II 76 Model Aviation Yoroa oa UR mechanical setup complete check everything through range travel surfacedeflection indicators market Pay special attention paired surfaces like ailerons elevators Absolute precision almost good enough quite Check again re-check Now time use travel-adjustment feature match travels paired servos plugged different channels point basic setup done can beep away hearts delightsetting rate switches aileron differential exponential trace rates like secure knowledge no dark secrets hiding basement identical things happening both sides airplane will find mixing programs differential adjustments other sophisticated features new Zoomie 7 8 9 10 XYZ radio now work intended make much sense boot new product front two new items interest first beautifully made aluminum air filter YS 120 filter fits NC SC SF versions engine have no idea about AC 140 FZ no longer own example former have yet examine latter mounts securely single setscrew claim nearly zero rpm drop no transition problems little jewel being marketed exclusively Al Coomber Central Hobbies Billings Montana price $1995 can contact him 800 7235937 second item new MK ballbearing link part #0806 very heavy-duty high-quality link 2mm rods average retail should about ten bucks adjuster rod included friction-free hookup device should available wherever MK items sold example shown photo provided courtesy Al Coomber Central Hobbies JWVJ1 qu&IFwEUIU4ypULwiwiAUMw5y*VwEiqilui~ Matched 1700 SCRC md Cells$500 SANYO N1700 SCRC md Cells$450 SANYO N1400 SCR md Cells$300 SANYO NiOQO SCR lnd Cells$350 SANYO N800 AR Ind Cells$350 SANYO KR600 AE Ind Cells$250 SANYO N270 AA Ind Cells$250 SANYO 600 AA Rechargeable$150 SAFT Full C Rechargeable Batteries$100 Ea 4 Cell 270 AA Receiver Pk$1000 5 Cell 1000 AE Receiver Pk$1800 Connectors$300 PR AII-IDIkILCDC -DSAVAIL Best-SeIhng Spa* lgnItIon w SYNCRO SPARK MICROPROCESSOR ELECTRONIC liMING CONTROL EASY TO INSTALL PLUGS BETWEEN YOUR PULSE SWITCH AND IGN SYSTEM OVING PARTS TO WEAR OUT OR GET OUT OF ADJUSTMENT SPARK TIMING WITH EACH ENGINE REVOLUTN COMPLETELY STABLE TIMING IS ROCK SOLID AND DOES NOT JUMP AROUND RETRO FIT TO MOST ALL BRANDS OF ADD-ON IGNITION SYSTEMS WITH HALL EFFECT TRIGGER WILL NOT WORK WITH REICHMUTH OR PRO SPARK SYSTEMS WE HAVE ALL PARTS TO CONVERT YOUR 28 & 32CC MCCULLOCH WEED TRIMMER ENGINES TO AIRPLANE USE WITH CDI IGNITION WE NOW HAVE THE JUMP START SYSTEM FOR THE ZENOAH G 45 & 62CC AND Z445 TWIN AND THE U S ENGINES 35 & 41CC WE HAVE THE RIM FIRE 1/4 x 32 SPARK PLUGS IN STOCK $1295 PLUS SHIPPING AND HANDLING MANY MORE ACCESSORIES PARTS CUSTOM INSTALLATION SEND $2 FOR PRICE LIST eflec OflCtIMflIkiOTOI tIIflkiOI February 1997 77 $3995 PLUS SHIPPING & HANDUNG $16495 SPECIFICATIONS Engine- 25 -402 cycle 40 48 4-Cycle Radio 3-Channel B&M MODEL Co 290W 1050 N LAYION 1fF 84041 PHONE 8011544-5689 Call Send $300 Color Brochure $3%cnio ro Orar ADD 11395 SHIPPINGIHANDLING UT RES ADD 625% TAX

Author: R. Allison


Edition: Model Aviation - 1997/02
Page Numbers: 69, 70, 75, 76, 77

RADIO CONTROL AEROBATICS WE VISITED question building models versus buying same awhile back examined philosophical angles moral dilemma practical side cost/benefit ratio etc Still however acquire model thing almost us must Buy build still have put equipment set up properly Equipment installation setup second-most-critical building step determining well finished model performs after fuselage/surface alignment trammeling servo hookup made cable run rigged control horn mount support/retainer installed flight-critical should perfect can make because little mistake miscalculation area can kill pride-and-joy small nonfatal miscues much common may have effect entirely out-of-proportion perceived size spring Im called help trim unruly models local practice field often find tiny setup errors difference between off board keeper unfairlylabeled dog minor items pointed out owner source difficulty usual reaction disbelief something insignificant could cause much grief Aerobatic flight exercise airborne geometric precision fractal-like manner geometry repeats macro micro back again very elegant interconnected fashion craft themselves models symmetry measured remeasured during assembly rigged hopefully exact angles thrust incidence smallest scale control systems arcs angles deflections repeat obeisance geometric ideal something awry upper level continuum cause very often lies below recall nicely-built model Sportsman owner verge mental instability because severe looptracking problem static-balanced model sealed hinge gaps weighted supposed heavy wing shimmed wing saddleall no avail first things checked elevator control horns found source problem immediately February 1997 69 Surface Deflection Indicator can valuable tool Central Hobbies air filter shown installed VS 12OSC achieving right setup Tettra unit shown Filter high-quality precision fit MK ball-bearing link 2mm threaded rods Its expensive heavy-duty slop-free Scott Colvin engrossed last-minute surgery Boxer Marymoor WA contest As per standard practice long 4-40 bolts nylon horn-ends mounted dowel hard-points both elevators both elevators trailed perfect alignment neutral positionwhich far pilot checked However airplanes dont loop elevators neutral friend overlooked simple geometry matter horns misaligned clevis attachment-point 1A6 inch front hinge line other equal distance behind addition attachment-point 1/i6 higher other Control horns matching surfaces like elevators ailerons must matched clevis attachment-point height displacement fore aft hingeline Any deviation will cause unequal control-surface travel addition attachment-point hole little nylon horn-end centered directly over hinge line result will differential travel up down vice-versa because linear motion pushrod pull cable converted rotary motion horn horn end travels through arc clevis attachment-point front hinge line pushrod below surface result will up travel down converse being true attachment-points aligned aft hingeline Before advent computer radios myriad adjustment features simple technique common method obtaining adjusting aileron differential friends case elevator half deflecting farther up down other half deflecting farther down up since horn shorter side also deflecting greater amount place elevators properly aligned neutral differences significant amounting 450 full travel Several tweaks pair pliers couple turns low horn-end squared away problem unshimmed wing saddle $7995 51 Symmetrical wing extra light 35 50 engines CHASOS constant cord wing Great low wing trainer Also available 25 size $5995 FREE shipping pIn 500 ipperscom/gns/homehtmplus 500 shipiing G&S Hobbies 967 Hfinoock Bullhead dy Az 86442 520-758-1100 O1 1-800-628-6065 LIQUI9ATIOH SALE PlTY PWUY 95 UTTEK CHAOS. $6996 TKAINEK 40$3995 96 PI# PEE$13995 LOAPSTAK 40 5 KKAFTY 60 995 ESCAPE XLT $5995 KILLEK PEE 10$16995 36 FLOATS$1811 plus shippiiiq CALL FOR CATALOG take CREDIT CARDS 70 Model Aviation OVP 40 deweighted wing model tracked beautifully fix took ten minutes doing right first time would have taken no extra timeand would have saved weeks hair-pulling separate servos used matched surfaces common aileron setups increasingly popular elevator setups problem compounded geometry hornends must precisely matched must geometry servo wheel arm Servos provide rotary output motion converted linear motion via cable rod reconverted rotary motion control horn servo takeoff-point travels arc either side neutral does control horn attachment-point both points connected cable rod fixed length Differential travel now possible either end hookup further complication radius output arc radius control horn arc both adjustable servo output wheel arm may regarded hingeline servo end neutral arm attachment-point wheel arm should perpendicular servo centerline arc travelsegments either side neutral equal linear motion produced control horn equal either side ______________________________ neutral position pre-computer radio era ideal lineup right angles centered takeoff points sometimes took major fussing achieve Todays sophisticated equipment makes easy doperhaps too easy real tendency whizbang 90s depend electronics total exclusion mechanical Servo traveling far enough direction No problem Too much travel both ways No problem Surfaces centered neutral Dont touch clevisjust beep beep beep troubles away problem approach is____________________________ can letter mu model Simple IL a44pci Ca sure Sensitivemajor decals 11 sizes Water Transfer11 great colors NORTHEAST SCREEN GRAPHICS PO BOX 304 EAST LONGMEAOOW MA 01028 TEL 413-025-4110 FAX 413-525-7794 February 1997 75 No 322 No 323 K&S ENGINEERING 6917 W 59th St Chicago IL 60638 WIRE BENDER 586-8503 SEND $100 FOR PRICE LIST AND CATALOG No 324 five minutes can upgrade stan dard Futaba Airtronics servos ball bearing servos new EMS Ball Bearing Conversion Kit New casetopsareaccuratelymoldedofsupertough glass filled fuel-proof Celcon include top quality stainless steel ball bearing servo output shaft * Stops case top and/or plastic bushing wear * Prevents output gear shaft shimmy * Reduces friction improves servo centering * Enhances performance airplanes boats & cars * Mandatory helicopter servos * Free output arm provided case top * Guaranteed against breakage year * pay $3995 $2995 1Fits FUTABA 528/5128 S38/S 138 orS48/S148 Servos set 4$2595 BBC-2As above set I$695 RRC3Fits AIRTRONICS 94102 Servos setof4$2595 4As above set 1$695 Ball Bearing Only JR 501 507 RCDAPOLLO 05 10 FOCUS HS300 HS500 ACE330342 342HS TOWER TS-51 Servos set 4$1995 Add $300 Shipping Handling allorders fy14 692-1393 Info Onlycalifornia Residents Add 775% Sales Tax 800 845-8978 Orders OnlyVISA MASTORCARD Accepted ~-N-SAFE MOUNTS special ribbed o-Damp Grommets Engine J always safely retained Very effective vibration reduction dramatic decrease engine shake Light weight aluminum beam mounts 120 4strokes available Also available aluminum radial mount 60 2-strokes Soft-N-Sale 120 beam mount complete 95 Soft-N-safe 60 radial mount complete 495 Soft-NSafe Replacement Iso-Damp Grommets Pkg 4 60$295 Pkg 4 120$595 ADJUSTABLE BEAM SOFT-N-SAFE FOR 40 TO 91 ENGINES beam type soft-mount uses Soft-N-Safe ribbed grommets vibration isolation providing effectiv vibration reduction decreased engine shake Adjustable engines 40s 91s NEW NOSE-RING KIT Everything need set up front soft-mount support Includes special soft grommet epoxy board hardware LJ $695 RADIAL ISO-MOUNTS Conventional backplate type mount using four Lord-Type 60-Duro Iso-Mounts Optimized lowest vibration transmission airframe reduced engine shake 60 2-strokes Radial lao-mount complete$1495 Iso-Mounts Package 4$995 5/8 diameter x 1/2 long 8-32 female end 8-32 x 1/2 male other end SO-Duro rubber 3713 Pompano Drive Pensacola FL 32514 GATORPhone 904 494-0203 RIC Products IncVISA/MasterCard Welcomed Readenta add 6% Tax radio can never correct poor mechanical hookup geometry conditions instance friends elevator problem would never have amenable such electronic fix Another very common difficulty arises separate servos must matched aileron installation builder may choose electronically limit extend travel substantial amount both units rather recenter mechanically adjust arm result being travel equal both servos transit times trim rates differ result might subtle malaisea trim wanders slightly different roll rate direction would avoid electronic pitfalls route simple Make mechanical setup geometrically pure possible Ensure control horns positioned identically attachment-points equal height servo arms matched takeoff points alignment Use radio features intended proper order First make absolutely certain start clean setupnever try reuse template another model possibilities confusion enormous Use servo reversing feature obtain proper travel directions inhibit activate assign switches set final configuration radio has centering adjustment feature set servo centers match pure perpendicular takeoff point servos Make especially sure paired servos ailerons matched type speed centers Make pushrod cable length adjustments align surfaces precisely using devises threaded ball-links make fine mechanical adjustments very end step might get away using servo centering feature again needed adjustment very tiny oneless clevis link REGAIN CONTROL iT7 Losing control can nightmare wrong response given command can take its toll model nerves wallet Radio South know feel about hobby too avid RC enthusiasts nearly half century combined experience modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical in-house radio service can depend Radio South customer satisfaction isnt just motto Its way life Let us put back control IZJi5 fjAIR7RONICS 3702 N Pace Pensacola FL 32505 repair information 904 434-0909 1-800-962-7802 Toll Free Order Line lOrders Only Please II 76 Model Aviation Yoroa oa UR mechanical setup complete check everything through range travel surfacedeflection indicators market Pay special attention paired surfaces like ailerons elevators Absolute precision almost good enough quite Check again re-check Now time use travel-adjustment feature match travels paired servos plugged different channels point basic setup done can beep away hearts delightsetting rate switches aileron differential exponential trace rates like secure knowledge no dark secrets hiding basement identical things happening both sides airplane will find mixing programs differential adjustments other sophisticated features new Zoomie 7 8 9 10 XYZ radio now work intended make much sense boot new product front two new items interest first beautifully made aluminum air filter YS 120 filter fits NC SC SF versions engine have no idea about AC 140 FZ no longer own example former have yet examine latter mounts securely single setscrew claim nearly zero rpm drop no transition problems little jewel being marketed exclusively Al Coomber Central Hobbies Billings Montana price $1995 can contact him 800 7235937 second item new MK ballbearing link part #0806 very heavy-duty high-quality link 2mm rods average retail should about ten bucks adjuster rod included friction-free hookup device should available wherever MK items sold example shown photo provided courtesy Al Coomber Central Hobbies JWVJ1 qu&IFwEUIU4ypULwiwiAUMw5y*VwEiqilui~ Matched 1700 SCRC md Cells$500 SANYO N1700 SCRC md Cells$450 SANYO N1400 SCR md Cells$300 SANYO NiOQO SCR lnd Cells$350 SANYO N800 AR Ind Cells$350 SANYO KR600 AE Ind Cells$250 SANYO N270 AA Ind Cells$250 SANYO 600 AA Rechargeable$150 SAFT Full C Rechargeable Batteries$100 Ea 4 Cell 270 AA Receiver Pk$1000 5 Cell 1000 AE Receiver Pk$1800 Connectors$300 PR AII-IDIkILCDC -DSAVAIL Best-SeIhng Spa* lgnItIon w SYNCRO SPARK MICROPROCESSOR ELECTRONIC liMING CONTROL EASY TO INSTALL PLUGS BETWEEN YOUR PULSE SWITCH AND IGN SYSTEM OVING PARTS TO WEAR OUT OR GET OUT OF ADJUSTMENT SPARK TIMING WITH EACH ENGINE REVOLUTN COMPLETELY STABLE TIMING IS ROCK SOLID AND DOES NOT JUMP AROUND RETRO FIT TO MOST ALL BRANDS OF ADD-ON IGNITION SYSTEMS WITH HALL EFFECT TRIGGER WILL NOT WORK WITH REICHMUTH OR PRO SPARK SYSTEMS WE HAVE ALL PARTS TO CONVERT YOUR 28 & 32CC MCCULLOCH WEED TRIMMER ENGINES TO AIRPLANE USE WITH CDI IGNITION WE NOW HAVE THE JUMP START SYSTEM FOR THE ZENOAH G 45 & 62CC AND Z445 TWIN AND THE U S ENGINES 35 & 41CC WE HAVE THE RIM FIRE 1/4 x 32 SPARK PLUGS IN STOCK $1295 PLUS SHIPPING AND HANDLING MANY MORE ACCESSORIES PARTS CUSTOM INSTALLATION SEND $2 FOR PRICE LIST eflec OflCtIMflIkiOTOI tIIflkiOI February 1997 77 $3995 PLUS SHIPPING & HANDUNG $16495 SPECIFICATIONS Engine- 25 -402 cycle 40 48 4-Cycle Radio 3-Channel B&M MODEL Co 290W 1050 N LAYION 1fF 84041 PHONE 8011544-5689 Call Send $300 Color Brochure $3%cnio ro Orar ADD 11395 SHIPPINGIHANDLING UT RES ADD 625% TAX

Author: R. Allison


Edition: Model Aviation - 1997/02
Page Numbers: 69, 70, 75, 76, 77

RADIO CONTROL AEROBATICS WE VISITED question building models versus buying same awhile back examined philosophical angles moral dilemma practical side cost/benefit ratio etc Still however acquire model thing almost us must Buy build still have put equipment set up properly Equipment installation setup second-most-critical building step determining well finished model performs after fuselage/surface alignment trammeling servo hookup made cable run rigged control horn mount support/retainer installed flight-critical should perfect can make because little mistake miscalculation area can kill pride-and-joy small nonfatal miscues much common may have effect entirely out-of-proportion perceived size spring Im called help trim unruly models local practice field often find tiny setup errors difference between off board keeper unfairlylabeled dog minor items pointed out owner source difficulty usual reaction disbelief something insignificant could cause much grief Aerobatic flight exercise airborne geometric precision fractal-like manner geometry repeats macro micro back again very elegant interconnected fashion craft themselves models symmetry measured remeasured during assembly rigged hopefully exact angles thrust incidence smallest scale control systems arcs angles deflections repeat obeisance geometric ideal something awry upper level continuum cause very often lies below recall nicely-built model Sportsman owner verge mental instability because severe looptracking problem static-balanced model sealed hinge gaps weighted supposed heavy wing shimmed wing saddleall no avail first things checked elevator control horns found source problem immediately February 1997 69 Surface Deflection Indicator can valuable tool Central Hobbies air filter shown installed VS 12OSC achieving right setup Tettra unit shown Filter high-quality precision fit MK ball-bearing link 2mm threaded rods Its expensive heavy-duty slop-free Scott Colvin engrossed last-minute surgery Boxer Marymoor WA contest As per standard practice long 4-40 bolts nylon horn-ends mounted dowel hard-points both elevators both elevators trailed perfect alignment neutral positionwhich far pilot checked However airplanes dont loop elevators neutral friend overlooked simple geometry matter horns misaligned clevis attachment-point 1A6 inch front hinge line other equal distance behind addition attachment-point 1/i6 higher other Control horns matching surfaces like elevators ailerons must matched clevis attachment-point height displacement fore aft hingeline Any deviation will cause unequal control-surface travel addition attachment-point hole little nylon horn-end centered directly over hinge line result will differential travel up down vice-versa because linear motion pushrod pull cable converted rotary motion horn horn end travels through arc clevis attachment-point front hinge line pushrod below surface result will up travel down converse being true attachment-points aligned aft hingeline Before advent computer radios myriad adjustment features simple technique common method obtaining adjusting aileron differential friends case elevator half deflecting farther up down other half deflecting farther down up since horn shorter side also deflecting greater amount place elevators properly aligned neutral differences significant amounting 450 full travel Several tweaks pair pliers couple turns low horn-end squared away problem unshimmed wing saddle $7995 51 Symmetrical wing extra light 35 50 engines CHASOS constant cord wing Great low wing trainer Also available 25 size $5995 FREE shipping pIn 500 ipperscom/gns/homehtmplus 500 shipiing G&S Hobbies 967 Hfinoock Bullhead dy Az 86442 520-758-1100 O1 1-800-628-6065 LIQUI9ATIOH SALE PlTY PWUY 95 UTTEK CHAOS. $6996 TKAINEK 40$3995 96 PI# PEE$13995 LOAPSTAK 40 5 KKAFTY 60 995 ESCAPE XLT $5995 KILLEK PEE 10$16995 36 FLOATS$1811 plus shippiiiq CALL FOR CATALOG take CREDIT CARDS 70 Model Aviation OVP 40 deweighted wing model tracked beautifully fix took ten minutes doing right first time would have taken no extra timeand would have saved weeks hair-pulling separate servos used matched surfaces common aileron setups increasingly popular elevator setups problem compounded geometry hornends must precisely matched must geometry servo wheel arm Servos provide rotary output motion converted linear motion via cable rod reconverted rotary motion control horn servo takeoff-point travels arc either side neutral does control horn attachment-point both points connected cable rod fixed length Differential travel now possible either end hookup further complication radius output arc radius control horn arc both adjustable servo output wheel arm may regarded hingeline servo end neutral arm attachment-point wheel arm should perpendicular servo centerline arc travelsegments either side neutral equal linear motion produced control horn equal either side ______________________________ neutral position pre-computer radio era ideal lineup right angles centered takeoff points sometimes took major fussing achieve Todays sophisticated equipment makes easy doperhaps too easy real tendency whizbang 90s depend electronics total exclusion mechanical Servo traveling far enough direction No problem Too much travel both ways No problem Surfaces centered neutral Dont touch clevisjust beep beep beep troubles away problem approach is____________________________ can letter mu model Simple IL a44pci Ca sure Sensitivemajor decals 11 sizes Water Transfer11 great colors NORTHEAST SCREEN GRAPHICS PO BOX 304 EAST LONGMEAOOW MA 01028 TEL 413-025-4110 FAX 413-525-7794 February 1997 75 No 322 No 323 K&S ENGINEERING 6917 W 59th St Chicago IL 60638 WIRE BENDER 586-8503 SEND $100 FOR PRICE LIST AND CATALOG No 324 five minutes can upgrade stan dard Futaba Airtronics servos ball bearing servos new EMS Ball Bearing Conversion Kit New casetopsareaccuratelymoldedofsupertough glass filled fuel-proof Celcon include top quality stainless steel ball bearing servo output shaft * Stops case top and/or plastic bushing wear * Prevents output gear shaft shimmy * Reduces friction improves servo centering * Enhances performance airplanes boats & cars * Mandatory helicopter servos * Free output arm provided case top * Guaranteed against breakage year * pay $3995 $2995 1Fits FUTABA 528/5128 S38/S 138 orS48/S148 Servos set 4$2595 BBC-2As above set I$695 RRC3Fits AIRTRONICS 94102 Servos setof4$2595 4As above set 1$695 Ball Bearing Only JR 501 507 RCDAPOLLO 05 10 FOCUS HS300 HS500 ACE330342 342HS TOWER TS-51 Servos set 4$1995 Add $300 Shipping Handling allorders fy14 692-1393 Info Onlycalifornia Residents Add 775% Sales Tax 800 845-8978 Orders OnlyVISA MASTORCARD Accepted ~-N-SAFE MOUNTS special ribbed o-Damp Grommets Engine J always safely retained Very effective vibration reduction dramatic decrease engine shake Light weight aluminum beam mounts 120 4strokes available Also available aluminum radial mount 60 2-strokes Soft-N-Sale 120 beam mount complete 95 Soft-N-safe 60 radial mount complete 495 Soft-NSafe Replacement Iso-Damp Grommets Pkg 4 60$295 Pkg 4 120$595 ADJUSTABLE BEAM SOFT-N-SAFE FOR 40 TO 91 ENGINES beam type soft-mount uses Soft-N-Safe ribbed grommets vibration isolation providing effectiv vibration reduction decreased engine shake Adjustable engines 40s 91s NEW NOSE-RING KIT Everything need set up front soft-mount support Includes special soft grommet epoxy board hardware LJ $695 RADIAL ISO-MOUNTS Conventional backplate type mount using four Lord-Type 60-Duro Iso-Mounts Optimized lowest vibration transmission airframe reduced engine shake 60 2-strokes Radial lao-mount complete$1495 Iso-Mounts Package 4$995 5/8 diameter x 1/2 long 8-32 female end 8-32 x 1/2 male other end SO-Duro rubber 3713 Pompano Drive Pensacola FL 32514 GATORPhone 904 494-0203 RIC Products IncVISA/MasterCard Welcomed Readenta add 6% Tax radio can never correct poor mechanical hookup geometry conditions instance friends elevator problem would never have amenable such electronic fix Another very common difficulty arises separate servos must matched aileron installation builder may choose electronically limit extend travel substantial amount both units rather recenter mechanically adjust arm result being travel equal both servos transit times trim rates differ result might subtle malaisea trim wanders slightly different roll rate direction would avoid electronic pitfalls route simple Make mechanical setup geometrically pure possible Ensure control horns positioned identically attachment-points equal height servo arms matched takeoff points alignment Use radio features intended proper order First make absolutely certain start clean setupnever try reuse template another model possibilities confusion enormous Use servo reversing feature obtain proper travel directions inhibit activate assign switches set final configuration radio has centering adjustment feature set servo centers match pure perpendicular takeoff point servos Make especially sure paired servos ailerons matched type speed centers Make pushrod cable length adjustments align surfaces precisely using devises threaded ball-links make fine mechanical adjustments very end step might get away using servo centering feature again needed adjustment very tiny oneless clevis link REGAIN CONTROL iT7 Losing control can nightmare wrong response given command can take its toll model nerves wallet Radio South know feel about hobby too avid RC enthusiasts nearly half century combined experience modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical in-house radio service can depend Radio South customer satisfaction isnt just motto Its way life Let us put back control IZJi5 fjAIR7RONICS 3702 N Pace Pensacola FL 32505 repair information 904 434-0909 1-800-962-7802 Toll Free Order Line lOrders Only Please II 76 Model Aviation Yoroa oa UR mechanical setup complete check everything through range travel surfacedeflection indicators market Pay special attention paired surfaces like ailerons elevators Absolute precision almost good enough quite Check again re-check Now time use travel-adjustment feature match travels paired servos plugged different channels point basic setup done can beep away hearts delightsetting rate switches aileron differential exponential trace rates like secure knowledge no dark secrets hiding basement identical things happening both sides airplane will find mixing programs differential adjustments other sophisticated features new Zoomie 7 8 9 10 XYZ radio now work intended make much sense boot new product front two new items interest first beautifully made aluminum air filter YS 120 filter fits NC SC SF versions engine have no idea about AC 140 FZ no longer own example former have yet examine latter mounts securely single setscrew claim nearly zero rpm drop no transition problems little jewel being marketed exclusively Al Coomber Central Hobbies Billings Montana price $1995 can contact him 800 7235937 second item new MK ballbearing link part #0806 very heavy-duty high-quality link 2mm rods average retail should about ten bucks adjuster rod included friction-free hookup device should available wherever MK items sold example shown photo provided courtesy Al Coomber Central Hobbies JWVJ1 qu&IFwEUIU4ypULwiwiAUMw5y*VwEiqilui~ Matched 1700 SCRC md Cells$500 SANYO N1700 SCRC md Cells$450 SANYO N1400 SCR md Cells$300 SANYO NiOQO SCR lnd Cells$350 SANYO N800 AR Ind Cells$350 SANYO KR600 AE Ind Cells$250 SANYO N270 AA Ind Cells$250 SANYO 600 AA Rechargeable$150 SAFT Full C Rechargeable Batteries$100 Ea 4 Cell 270 AA Receiver Pk$1000 5 Cell 1000 AE Receiver Pk$1800 Connectors$300 PR AII-IDIkILCDC -DSAVAIL Best-SeIhng Spa* lgnItIon w SYNCRO SPARK MICROPROCESSOR ELECTRONIC liMING CONTROL EASY TO INSTALL PLUGS BETWEEN YOUR PULSE SWITCH AND IGN SYSTEM OVING PARTS TO WEAR OUT OR GET OUT OF ADJUSTMENT SPARK TIMING WITH EACH ENGINE REVOLUTN COMPLETELY STABLE TIMING IS ROCK SOLID AND DOES NOT JUMP AROUND RETRO FIT TO MOST ALL BRANDS OF ADD-ON IGNITION SYSTEMS WITH HALL EFFECT TRIGGER WILL NOT WORK WITH REICHMUTH OR PRO SPARK SYSTEMS WE HAVE ALL PARTS TO CONVERT YOUR 28 & 32CC MCCULLOCH WEED TRIMMER ENGINES TO AIRPLANE USE WITH CDI IGNITION WE NOW HAVE THE JUMP START SYSTEM FOR THE ZENOAH G 45 & 62CC AND Z445 TWIN AND THE U S ENGINES 35 & 41CC WE HAVE THE RIM FIRE 1/4 x 32 SPARK PLUGS IN STOCK $1295 PLUS SHIPPING AND HANDLING MANY MORE ACCESSORIES PARTS CUSTOM INSTALLATION SEND $2 FOR PRICE LIST eflec OflCtIMflIkiOTOI tIIflkiOI February 1997 77 $3995 PLUS SHIPPING & HANDUNG $16495 SPECIFICATIONS Engine- 25 -402 cycle 40 48 4-Cycle Radio 3-Channel B&M MODEL Co 290W 1050 N LAYION 1fF 84041 PHONE 8011544-5689 Call Send $300 Color Brochure $3%cnio ro Orar ADD 11395 SHIPPINGIHANDLING UT RES ADD 625% TAX

Author: R. Allison


Edition: Model Aviation - 1997/02
Page Numbers: 69, 70, 75, 76, 77

RADIO CONTROL AEROBATICS WE VISITED question building models versus buying same awhile back examined philosophical angles moral dilemma practical side cost/benefit ratio etc Still however acquire model thing almost us must Buy build still have put equipment set up properly Equipment installation setup second-most-critical building step determining well finished model performs after fuselage/surface alignment trammeling servo hookup made cable run rigged control horn mount support/retainer installed flight-critical should perfect can make because little mistake miscalculation area can kill pride-and-joy small nonfatal miscues much common may have effect entirely out-of-proportion perceived size spring Im called help trim unruly models local practice field often find tiny setup errors difference between off board keeper unfairlylabeled dog minor items pointed out owner source difficulty usual reaction disbelief something insignificant could cause much grief Aerobatic flight exercise airborne geometric precision fractal-like manner geometry repeats macro micro back again very elegant interconnected fashion craft themselves models symmetry measured remeasured during assembly rigged hopefully exact angles thrust incidence smallest scale control systems arcs angles deflections repeat obeisance geometric ideal something awry upper level continuum cause very often lies below recall nicely-built model Sportsman owner verge mental instability because severe looptracking problem static-balanced model sealed hinge gaps weighted supposed heavy wing shimmed wing saddleall no avail first things checked elevator control horns found source problem immediately February 1997 69 Surface Deflection Indicator can valuable tool Central Hobbies air filter shown installed VS 12OSC achieving right setup Tettra unit shown Filter high-quality precision fit MK ball-bearing link 2mm threaded rods Its expensive heavy-duty slop-free Scott Colvin engrossed last-minute surgery Boxer Marymoor WA contest As per standard practice long 4-40 bolts nylon horn-ends mounted dowel hard-points both elevators both elevators trailed perfect alignment neutral positionwhich far pilot checked However airplanes dont loop elevators neutral friend overlooked simple geometry matter horns misaligned clevis attachment-point 1A6 inch front hinge line other equal distance behind addition attachment-point 1/i6 higher other Control horns matching surfaces like elevators ailerons must matched clevis attachment-point height displacement fore aft hingeline Any deviation will cause unequal control-surface travel addition attachment-point hole little nylon horn-end centered directly over hinge line result will differential travel up down vice-versa because linear motion pushrod pull cable converted rotary motion horn horn end travels through arc clevis attachment-point front hinge line pushrod below surface result will up travel down converse being true attachment-points aligned aft hingeline Before advent computer radios myriad adjustment features simple technique common method obtaining adjusting aileron differential friends case elevator half deflecting farther up down other half deflecting farther down up since horn shorter side also deflecting greater amount place elevators properly aligned neutral differences significant amounting 450 full travel Several tweaks pair pliers couple turns low horn-end squared away problem unshimmed wing saddle $7995 51 Symmetrical wing extra light 35 50 engines CHASOS constant cord wing Great low wing trainer Also available 25 size $5995 FREE shipping pIn 500 ipperscom/gns/homehtmplus 500 shipiing G&S Hobbies 967 Hfinoock Bullhead dy Az 86442 520-758-1100 O1 1-800-628-6065 LIQUI9ATIOH SALE PlTY PWUY 95 UTTEK CHAOS. $6996 TKAINEK 40$3995 96 PI# PEE$13995 LOAPSTAK 40 5 KKAFTY 60 995 ESCAPE XLT $5995 KILLEK PEE 10$16995 36 FLOATS$1811 plus shippiiiq CALL FOR CATALOG take CREDIT CARDS 70 Model Aviation OVP 40 deweighted wing model tracked beautifully fix took ten minutes doing right first time would have taken no extra timeand would have saved weeks hair-pulling separate servos used matched surfaces common aileron setups increasingly popular elevator setups problem compounded geometry hornends must precisely matched must geometry servo wheel arm Servos provide rotary output motion converted linear motion via cable rod reconverted rotary motion control horn servo takeoff-point travels arc either side neutral does control horn attachment-point both points connected cable rod fixed length Differential travel now possible either end hookup further complication radius output arc radius control horn arc both adjustable servo output wheel arm may regarded hingeline servo end neutral arm attachment-point wheel arm should perpendicular servo centerline arc travelsegments either side neutral equal linear motion produced control horn equal either side ______________________________ neutral position pre-computer radio era ideal lineup right angles centered takeoff points sometimes took major fussing achieve Todays sophisticated equipment makes easy doperhaps too easy real tendency whizbang 90s depend electronics total exclusion mechanical Servo traveling far enough direction No problem Too much travel both ways No problem Surfaces centered neutral Dont touch clevisjust beep beep beep troubles away problem approach is____________________________ can letter mu model Simple IL a44pci Ca sure Sensitivemajor decals 11 sizes Water Transfer11 great colors NORTHEAST SCREEN GRAPHICS PO BOX 304 EAST LONGMEAOOW MA 01028 TEL 413-025-4110 FAX 413-525-7794 February 1997 75 No 322 No 323 K&S ENGINEERING 6917 W 59th St Chicago IL 60638 WIRE BENDER 586-8503 SEND $100 FOR PRICE LIST AND CATALOG No 324 five minutes can upgrade stan dard Futaba Airtronics servos ball bearing servos new EMS Ball Bearing Conversion Kit New casetopsareaccuratelymoldedofsupertough glass filled fuel-proof Celcon include top quality stainless steel ball bearing servo output shaft * Stops case top and/or plastic bushing wear * Prevents output gear shaft shimmy * Reduces friction improves servo centering * Enhances performance airplanes boats & cars * Mandatory helicopter servos * Free output arm provided case top * Guaranteed against breakage year * pay $3995 $2995 1Fits FUTABA 528/5128 S38/S 138 orS48/S148 Servos set 4$2595 BBC-2As above set I$695 RRC3Fits AIRTRONICS 94102 Servos setof4$2595 4As above set 1$695 Ball Bearing Only JR 501 507 RCDAPOLLO 05 10 FOCUS HS300 HS500 ACE330342 342HS TOWER TS-51 Servos set 4$1995 Add $300 Shipping Handling allorders fy14 692-1393 Info Onlycalifornia Residents Add 775% Sales Tax 800 845-8978 Orders OnlyVISA MASTORCARD Accepted ~-N-SAFE MOUNTS special ribbed o-Damp Grommets Engine J always safely retained Very effective vibration reduction dramatic decrease engine shake Light weight aluminum beam mounts 120 4strokes available Also available aluminum radial mount 60 2-strokes Soft-N-Sale 120 beam mount complete 95 Soft-N-safe 60 radial mount complete 495 Soft-NSafe Replacement Iso-Damp Grommets Pkg 4 60$295 Pkg 4 120$595 ADJUSTABLE BEAM SOFT-N-SAFE FOR 40 TO 91 ENGINES beam type soft-mount uses Soft-N-Safe ribbed grommets vibration isolation providing effectiv vibration reduction decreased engine shake Adjustable engines 40s 91s NEW NOSE-RING KIT Everything need set up front soft-mount support Includes special soft grommet epoxy board hardware LJ $695 RADIAL ISO-MOUNTS Conventional backplate type mount using four Lord-Type 60-Duro Iso-Mounts Optimized lowest vibration transmission airframe reduced engine shake 60 2-strokes Radial lao-mount complete$1495 Iso-Mounts Package 4$995 5/8 diameter x 1/2 long 8-32 female end 8-32 x 1/2 male other end SO-Duro rubber 3713 Pompano Drive Pensacola FL 32514 GATORPhone 904 494-0203 RIC Products IncVISA/MasterCard Welcomed Readenta add 6% Tax radio can never correct poor mechanical hookup geometry conditions instance friends elevator problem would never have amenable such electronic fix Another very common difficulty arises separate servos must matched aileron installation builder may choose electronically limit extend travel substantial amount both units rather recenter mechanically adjust arm result being travel equal both servos transit times trim rates differ result might subtle malaisea trim wanders slightly different roll rate direction would avoid electronic pitfalls route simple Make mechanical setup geometrically pure possible Ensure control horns positioned identically attachment-points equal height servo arms matched takeoff points alignment Use radio features intended proper order First make absolutely certain start clean setupnever try reuse template another model possibilities confusion enormous Use servo reversing feature obtain proper travel directions inhibit activate assign switches set final configuration radio has centering adjustment feature set servo centers match pure perpendicular takeoff point servos Make especially sure paired servos ailerons matched type speed centers Make pushrod cable length adjustments align surfaces precisely using devises threaded ball-links make fine mechanical adjustments very end step might get away using servo centering feature again needed adjustment very tiny oneless clevis link REGAIN CONTROL iT7 Losing control can nightmare wrong response given command can take its toll model nerves wallet Radio South know feel about hobby too avid RC enthusiasts nearly half century combined experience modeling radio repair So avoid inflated repair costs undue service time Radio South fast economical in-house radio service can depend Radio South customer satisfaction isnt just motto Its way life Let us put back control IZJi5 fjAIR7RONICS 3702 N Pace Pensacola FL 32505 repair information 904 434-0909 1-800-962-7802 Toll Free Order Line lOrders Only Please II 76 Model Aviation Yoroa oa UR mechanical setup complete check everything through range travel surfacedeflection indicators market Pay special attention paired surfaces like ailerons elevators Absolute precision almost good enough quite Check again re-check Now time use travel-adjustment feature match travels paired servos plugged different channels point basic setup done can beep away hearts delightsetting rate switches aileron differential exponential trace rates like secure knowledge no dark secrets hiding basement identical things happening both sides airplane will find mixing programs differential adjustments other sophisticated features new Zoomie 7 8 9 10 XYZ radio now work intended make much sense boot new product front two new items interest first beautifully made aluminum air filter YS 120 filter fits NC SC SF versions engine have no idea about AC 140 FZ no longer own example former have yet examine latter mounts securely single setscrew claim nearly zero rpm drop no transition problems little jewel being marketed exclusively Al Coomber Central Hobbies Billings Montana price $1995 can contact him 800 7235937 second item new MK ballbearing link part #0806 very heavy-duty high-quality link 2mm rods average retail should about ten bucks adjuster rod included friction-free hookup device should available wherever MK items sold example shown photo provided courtesy Al Coomber Central Hobbies JWVJ1 qu&IFwEUIU4ypULwiwiAUMw5y*VwEiqilui~ Matched 1700 SCRC md Cells$500 SANYO N1700 SCRC md Cells$450 SANYO N1400 SCR md Cells$300 SANYO NiOQO SCR lnd Cells$350 SANYO N800 AR Ind Cells$350 SANYO KR600 AE Ind Cells$250 SANYO N270 AA Ind Cells$250 SANYO 600 AA Rechargeable$150 SAFT Full C Rechargeable Batteries$100 Ea 4 Cell 270 AA Receiver Pk$1000 5 Cell 1000 AE Receiver Pk$1800 Connectors$300 PR AII-IDIkILCDC -DSAVAIL Best-SeIhng Spa* lgnItIon w SYNCRO SPARK MICROPROCESSOR ELECTRONIC liMING CONTROL EASY TO INSTALL PLUGS BETWEEN YOUR PULSE SWITCH AND IGN SYSTEM OVING PARTS TO WEAR OUT OR GET OUT OF ADJUSTMENT SPARK TIMING WITH EACH ENGINE REVOLUTN COMPLETELY STABLE TIMING IS ROCK SOLID AND DOES NOT JUMP AROUND RETRO FIT TO MOST ALL BRANDS OF ADD-ON IGNITION SYSTEMS WITH HALL EFFECT TRIGGER WILL NOT WORK WITH REICHMUTH OR PRO SPARK SYSTEMS WE HAVE ALL PARTS TO CONVERT YOUR 28 & 32CC MCCULLOCH WEED TRIMMER ENGINES TO AIRPLANE USE WITH CDI IGNITION WE NOW HAVE THE JUMP START SYSTEM FOR THE ZENOAH G 45 & 62CC AND Z445 TWIN AND THE U S ENGINES 35 & 41CC WE HAVE THE RIM FIRE 1/4 x 32 SPARK PLUGS IN STOCK $1295 PLUS SHIPPING AND HANDLING MANY MORE ACCESSORIES PARTS CUSTOM INSTALLATION SEND $2 FOR PRICE LIST eflec OflCtIMflIkiOTOI tIIflkiOI February 1997 77 $3995 PLUS SHIPPING & HANDUNG $16495 SPECIFICATIONS Engine- 25 -402 cycle 40 48 4-Cycle Radio 3-Channel B&M MODEL Co 290W 1050 N LAYION 1fF 84041 PHONE 8011544-5689 Call Send $300 Color Brochure $3%cnio ro Orar ADD 11395 SHIPPINGIHANDLING UT RES ADD 625% TAX

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