RADIO CONTROL ELECTRICS THIS MONTHS TOPICS include unusual Electric Connection Service club call reader query 1995 KRC Electric Fly Seminar schedule continuing discussion motor/prop/battery basics Ron Torrito longtime E-modeler Northern Connecticut Radio Control Club wrote tell interest communicating other E-minded modelers Internet Ron asking ECS could used list Net addresses hope encouraging such communication Sure first ECS Internet listing Rons R Torrito@AOLcom mailing address 1625 Main St East Hartford CT 06108 anyone else interested providing Internet address ECS listing just send Ill get upcoming column know about ones membership openings readers can join up Im asking interested Electric clubs write suitable contact information November 30 1995 Ill compile present listing early 96 regularly receive E-club newsletters around country treat read Its amazing much effort put amount product technical information contain size content some newsletters actually dwarf typical monthly magazine column comparison Ive often thought nice would somehow info E-club newsletters could compiled annual master newsletter book Some clubs make newsletters available non-members small fee Id like club responding above indicate newsletters available E-modeldom large price mailing address well Id like dedicate future Electric Connection Service listing Electric clubs Im anxious to Its very difficult columnist please document clubs Im especially eager everyone time try include something everyone over course time cant always tell received readership large Some readers write reaction silent Much columns makeup own judgment some influence incoming mail questions comment Id like very much hear folks specific interests needs likes dislikes about column Depending collective response Ill try adjust column content best suit average Just write preliminary schedule 1995 KRC Electric Fly Seminar scheduled Friday September 15 sponsored SR Batteries will again held Best Western Motor Lodge Quakertown PA about four miles flying field Scheduled speakers topics include Micro-Electrics Clyde Geist Electric Old Timers Bob Aberle Rx Tx Pack Care Feeding Larry Sribnick Computerized Radio Systems Dave Baron Electric Flying September1995 77 Commutator winding connections segments brush spiral brush spring Large openings cooling three-pole armature windings removed Poles slots clearly visible Rear view opened economy r clearly showsRear end bell motor housing two brush holders Spring two shaped ferrite magnetspresses brush contact commutator Wings Keith Shaw Electric Control Line Bob Hunt Electric Ducted Fan Flying Tom Hunt Twin Motor Gear Drives Clyde Geist Electronic Speed Controls Martin Euredjian Getting Most Motor Larry Sribnick Electric Night Flying Bob Kopski Online Services NEAC Larry Sribnick interested attending 9 am-5 pm seminar can contact Larry Sribnick SR Batteries Inc Box 287 Bellport NY 11713 Tel 516 286-0079 fax 516 286-0901 Registration reservations required fee $15 Last years seminar sellout dont dilly-dally Night Flying begins about two hours after seminar closes Last year 200 persons field witness nifty display SASE will get five-page KRC Electric Fly mailer Electric Fly Manager Anthony Assetto 639 Neshaminy Ave Warrington PA 18976 Tel 215 491-9419 Meet dates September 15-17 Last months column included discussion Motor/Battery/Prop Basics continuation Modelers often puzzled motor terms makeup operation Examples common questions concern armature windings turns motor magnets proper voltage Lets take look some starting conventional brnshed motors brushless motors will covered later column motors use permanent magnet motorsthe motor housing contains permanent magnets also referred field magnets typically attached around curved inner surface motor housing magnets also shaped inner space between forms empty cylinder Normally motors have two magnets magnet assemblies forming diametrically opposed magnetic poles within motor housingthe classic north south poles individual field pole magnets connected other iron motor housing interconnection actually magnetic circuit Nearly motors have openings somewhere housing some inner stuff visible outside annaturethe assembly motor shaftresides inside between two magnetic poles just described does touch field magnets sized spaced rotate very close field pole faces effect armature metalwork immersed strong magnetic field exists between two field poles typical armature consists mainly thin laminated iron plates form stack along armature shaft individual laminations hence stack shaped form armature poles spaces/grooves between armature poles called slots poles groups poles wound insulated wire magnet wire passed through slots form what known armature windings Unlike field magnets iron armature poles magnetized armature has few poles permanent field magnets strong can feel resulting pull metal September 1995 79 ROAR1S SURFACE DEFLECTION INDICATOR IS GREAT FOR PRECISION ADJUSTMENTS OF ELEVATORS AILERONS FLAPS AND RUDDER ANDTOMAKESURE PIkIIJtO AMD PROP TURN THE ROART HIALANCER tools correctly set up model fly time Send eelf -addressed stamped complete product cataloe todayRolart Manufacturing IncPOox 1247 Eleven-pole three-pole armatures Note skewed stack laminations visible 11-pole version Optional Builders Top $2500 44 Tall Accomodates Any Length Plane Equipped Handes Convenient Transporting Home Fietd Made unfinished pressure treated lumber withstand years fuel weather abuse base made using 2 8 tilt-resisting legs storage area between upright columns Upright cot umna pressure-treated 2 4s mid-level shelf field boa storage cotumna also feature two hooks transmitter storage padded horizontal rests supporting model during inspection repair aircraft hetd table means two standard length rubber bands end dowet posts prevent modet accidentally being bumped off platform Optional 48 30 plywood builders top attaches metal screws minutes easily removed reverting back field repair use necessary hardware included both items sold kit form Check first local hobby shop available may ordered direct Shipping weight 30 lbs table 18 lbs builders top LINCOLN WOODCRAFT 935 Winchester Hwy tteville TN 37334 615-433-4808 80 Model Aviation ture poles trying turn armature shaft will tend cog index given armature pole aligns pull field poles Sometimes magnetic force great cant turn shaft itself grabbing prop assist Sometimes armature poles easier turn shaft manuallythere fewer distinct indices Hobby motors have least three armature poles have some 11 Some armature stacks skewed armature poles slots formed parallel shaft angular relationship skewing tends blur otherwise distinct pole shape pull field magnets also allows motor run easily turned hand run smoothly lower speeds Such motor said have low cogging commutator round insulated assembly separate metal segments Like stack located armature shaft normally positioned rear end armature shaft just inside rear motor housing bearing wire ends armature windings connected commutator segments sort daisy-chain manner segments have specific physical relationship angular location relative armature poles commutator segments form part moving switch other part pair brushes usually small spring-loaded conductive black blocks ride commutator segments Brushes have fixed position position range relative magnets motor housing commutator segments rotate under brush contacts armature spins brush angle adjustment actually setting angular relationship field poles brush positions two external motor terminals points external battery voltage applied actually connections brushes voltage applied motor brush terminals also applied particular set commutator segments brush contact results current flow armature windings weighted distributed manner Current flow winding armature pole pole group causes become magnetized electromagnet thus attracted repelled nearest permanent magnet field pole starts rotation armature shaft Whats fundamental relative mechanical relationship permanent magnets brushes armature poles commutator segments right magnetic attraction repulsion causes armature turn moving CE sive field testing give great well Beller engine protection Consistent runs Cooler operating temperatures a,--, nffr full line of fuels ranging 0% price attractive inferior fuels Whet youre cars boats ducted fans fixed wing rotaly wing theres Byron Fuel blended specifically needs including three premium Byron RACE car fuels ick Byron Fuel contact us direct Grove IA 51445 364-3165 blended fuels lead industry Innsistent operation rrface tension e flow-rate Get fueling confidence Get Byron Fuel fuel champions BYRON ORIGINA LSINc commutator segments correct new brush contact position allow magnetization next upcoming armature pole effect rotating armature switches its own windings off selectively just right time sequentially magnetize moving poles keep em moving little imagination will let see sustaining process allowing continued rotation armature Now lets look some aspects motor makeup operation detail field magnets parts often described advertising cobalt ferrite neodymthe magnet material given material volume some magnets stronger others such cobalt over ferrite Stronger magnets better weaker ones several reasons else being equal stronger fields torque motor has relative terms can turn larger prop slower lower current Extraflux rings available some motors iron tubes slip over outside motor housing better connect two individual field magnets thickening motor housing improving magnetic circuit produces stronger magnetic field inside motor armature resides rotates productive motor housing material relatively thin begin Conversely else being equal weaker magnetic field faster armature will turn lower torque Carried too far results very-highspeed nearly useless motor Moving armature given voltage else being equal fewer turns windings faster armature will spin fewer poles faster armature will spin will tend cog Higher rpm per se necessarily good purposes associated torque high enough turn appropriate prop given model youre getting feeling everything motor design tradeoff sorts youre rightnot technical ways also matters cost good motor might described part having relatively high speed high torque low current drain high efficiency small size light weight low cost As might imagine hard attain same time Electrical aspects motor operation voltage applied brush terminals armature turns current flows largely dictated external load prop motor An unloaded motor no prop requires very little input power voltage times current run its doing very little work 21st CENTURYIRON ha designed ground up master modelers Itsue shoe design will reach places other irons can dream ofand its fully contoured shape allows dent-freeapplication temperature control dial handle hot shoe no burned fingers Its specially ulated coating delivers remarkable slip characteristics smoothest no-drag slide over virtually covering surface custom-fitted covering sock sturdy table top stand included free costs little conventional irons its last iron youll ever buy smart iron Coverite REAR HOSE IDST*TUSOF WSWEOATUKE CSYSTEM TEESSEArIJEE COSTEOL ASUNHEPON HANDLE NOT ON SHOE stromSTTNSBATUAST 50559W 51005 FINSEES SN HOT SHOE 01St TEUTRATLJEE ACCLLEATETON1THIN5DEGEEES FAHRENAEITOF SHOE TEE4FEHAOUESI...4 SIDEEASES WETENGOF DUETSTN SEE ADAPTOR THROW AWAY YOUR COLLETS CHUCK & WRENCH USE OUR ADAPTOR & KEYLESS CHUCK IBTOSR2 CAP ON ALL OREME POWER TOOLS INCLUDING 750 MINIMITE & EXIBLE SHAFT RUNS 100% TRUE & CONCENTRIC AT FULL RPM NO 501 ADAPTORKEYLESS CHUCKS1895 650 395 00 NOT NEED ADAPTOR TO USE KEYLESS CHUCKI STEEL SAW AND ARBOR HARDENED GROUM3 & POliSHED STEEL USED FOR CurliNG PLASTIC WOOD SOFT METALS LESAN PLEXIGLASS & ETC AVAILABLE IN 006006 010012 014 016018 V OUTSIDE DIAMETER 0 $676 EA J020023025 028 022Th1C1NESS NO 502ARBOR$600 NO 503VX014X1/4SAWS600 OUR SAWS ONLY WORK WITH OUR ARBOR ABRASIVE CUT-OFF BLADES FIBERGLASS REINFORCED-RESISTS METALS ALL BLADES 1/32 THICK SAWS AND CUT-OFF BLADES ONLY WORK W11H 0510 NDBORI NO NEED FOR PUNT OR MATCHES MICROJUST PRESS THE PESO SELF-STARliNG BUTTON FOR MICRO SIZE ADJUSTABLE SELFFLAME THAT BURNS AT 2370 FOR UP TO STARTING3HOURSOPERATESON STANDARD BUTANE AND IS TORCHREFILLABLE TANK FITS COMFORTABLY IN ThE PALM OF YOUR HAND AND IS MT77MADE OF HIGH IMPACT RUBBER WHICH Blow TorchALLOWS FOR SAFE NON-SLIP DRIP I.IIh rn ES blatRoD $3500 SUPPLIED WTTH CAN OF BUTANE EASTERN TOOL&SUPPLYCO0000001750 149 GRAND ST -Nyc. NY 1001321239-3741 CATALOG FREE WTI-I ORDERFP&215-905-bIt THE WOFLEJS DIlLY COUEFII1O IFiQIl WITH fiFTIFID1iL IFiTEILIOEFEE creation space age technology 21st CENTURY IRON makes other covering irons obsolete No guesswork major iron-on covering manufacturers recommend specific application shrinking temperatures achieve tightest longest lasting possible finish Only 21st CENTURY IRON has built-in temperature control system accurate within three degrees Fahrenheit dial setting Simply set dial desired temperature Temperature Processing Indicator TPI lights iron temperature rises reach dial setting TPI blinks set temperature reached telling its time cover No thermometer complicated testing needed advanced tool iron allows dial specific temoerature C0VERE 420 BASHLOR ROAD ROANFIAM PENI4SYIHANIA 19044 SANYO 1700 SCRC MATCHED INDIVIDUAL CELLS$550 EA $450 EA $300 EA $350 EA $350 EA $350 EA $150 EA SANYO RECHARGEABLE AA INDIVIDUAL CELLS 82 Model Aviation 4Adding prop immediately raises demand current since power needed work turning prop rpm given motor directly related applied voltage voltage greater rpm relatively small increase voltage rpm results larger increase current practical application means adding cell pack can make big difference power motor can take Ideallyif no losses motorthe rpm would dictated voltage principle would independent load placed Real motors have real losses inefficiencies due primarily resistance present brushes brush/commutator contact armature windings resistances what gets hot current flows through As result motor rpm will drop some load applied strong temptation use massive brushes large commutators few turns thick wire possible windings again fewer turns means higher rpm often practical gear drives good example growing popularity high-speed car motors large-ratio gear drives turning big props Alternatively concert stronger field magnets can used lower high rpm bolster torque producing double benefit As other things practical limits what can physically achieved tradeoffs hope brief look motors has provided some feel work may differ among themselves Upcoming columns will look motor operation application cell count some influences prop choice Please include SASE correspondence youd like reply Happy quiet E-power landings COO Prepare models IIWflJTEsurface perfect IIfinish Hobbico HobbyLite Filler Practically weighlless.simple use Ideal balsa fibeglass foam Great valueget filler money Specially developed tor model building nicroballoon-rich HobbyLite spreads easily dries tast same consistency balsa tor smooth sanding HobbyLite doesnt shrink hs almost nothing Get generous 8-ounce sup ply fraction ot other fillers price Available white balsa colors hobby dealers everywhere intormation location ot dealer nearest please call 18006828948 mention code number 047E Distributed exclusively GREAT PLANES MODEL DISTRIBUTORS COMPANY PO Box 9021 champaign IL 61828-9021 Copyright 19953074176 SANYO 1700 SCRC INDIVIDUAL CELLS SANYO 1400 SCR INDIVIDUAL CELLS SANYO N1000 SCR INDIVDUAL CELLS SANYO N800 AR INDIVIDUAL CELLS SANYO N600 INDIVIDUAL CELLS
Edition: Model Aviation - 1995/09
Page Numbers: 77, 79, 80, 81, 82
RADIO CONTROL ELECTRICS THIS MONTHS TOPICS include unusual Electric Connection Service club call reader query 1995 KRC Electric Fly Seminar schedule continuing discussion motor/prop/battery basics Ron Torrito longtime E-modeler Northern Connecticut Radio Control Club wrote tell interest communicating other E-minded modelers Internet Ron asking ECS could used list Net addresses hope encouraging such communication Sure first ECS Internet listing Rons R Torrito@AOLcom mailing address 1625 Main St East Hartford CT 06108 anyone else interested providing Internet address ECS listing just send Ill get upcoming column know about ones membership openings readers can join up Im asking interested Electric clubs write suitable contact information November 30 1995 Ill compile present listing early 96 regularly receive E-club newsletters around country treat read Its amazing much effort put amount product technical information contain size content some newsletters actually dwarf typical monthly magazine column comparison Ive often thought nice would somehow info E-club newsletters could compiled annual master newsletter book Some clubs make newsletters available non-members small fee Id like club responding above indicate newsletters available E-modeldom large price mailing address well Id like dedicate future Electric Connection Service listing Electric clubs Im anxious to Its very difficult columnist please document clubs Im especially eager everyone time try include something everyone over course time cant always tell received readership large Some readers write reaction silent Much columns makeup own judgment some influence incoming mail questions comment Id like very much hear folks specific interests needs likes dislikes about column Depending collective response Ill try adjust column content best suit average Just write preliminary schedule 1995 KRC Electric Fly Seminar scheduled Friday September 15 sponsored SR Batteries will again held Best Western Motor Lodge Quakertown PA about four miles flying field Scheduled speakers topics include Micro-Electrics Clyde Geist Electric Old Timers Bob Aberle Rx Tx Pack Care Feeding Larry Sribnick Computerized Radio Systems Dave Baron Electric Flying September1995 77 Commutator winding connections segments brush spiral brush spring Large openings cooling three-pole armature windings removed Poles slots clearly visible Rear view opened economy r clearly showsRear end bell motor housing two brush holders Spring two shaped ferrite magnetspresses brush contact commutator Wings Keith Shaw Electric Control Line Bob Hunt Electric Ducted Fan Flying Tom Hunt Twin Motor Gear Drives Clyde Geist Electronic Speed Controls Martin Euredjian Getting Most Motor Larry Sribnick Electric Night Flying Bob Kopski Online Services NEAC Larry Sribnick interested attending 9 am-5 pm seminar can contact Larry Sribnick SR Batteries Inc Box 287 Bellport NY 11713 Tel 516 286-0079 fax 516 286-0901 Registration reservations required fee $15 Last years seminar sellout dont dilly-dally Night Flying begins about two hours after seminar closes Last year 200 persons field witness nifty display SASE will get five-page KRC Electric Fly mailer Electric Fly Manager Anthony Assetto 639 Neshaminy Ave Warrington PA 18976 Tel 215 491-9419 Meet dates September 15-17 Last months column included discussion Motor/Battery/Prop Basics continuation Modelers often puzzled motor terms makeup operation Examples common questions concern armature windings turns motor magnets proper voltage Lets take look some starting conventional brnshed motors brushless motors will covered later column motors use permanent magnet motorsthe motor housing contains permanent magnets also referred field magnets typically attached around curved inner surface motor housing magnets also shaped inner space between forms empty cylinder Normally motors have two magnets magnet assemblies forming diametrically opposed magnetic poles within motor housingthe classic north south poles individual field pole magnets connected other iron motor housing interconnection actually magnetic circuit Nearly motors have openings somewhere housing some inner stuff visible outside annaturethe assembly motor shaftresides inside between two magnetic poles just described does touch field magnets sized spaced rotate very close field pole faces effect armature metalwork immersed strong magnetic field exists between two field poles typical armature consists mainly thin laminated iron plates form stack along armature shaft individual laminations hence stack shaped form armature poles spaces/grooves between armature poles called slots poles groups poles wound insulated wire magnet wire passed through slots form what known armature windings Unlike field magnets iron armature poles magnetized armature has few poles permanent field magnets strong can feel resulting pull metal September 1995 79 ROAR1S SURFACE DEFLECTION INDICATOR IS GREAT FOR PRECISION ADJUSTMENTS OF ELEVATORS AILERONS FLAPS AND RUDDER ANDTOMAKESURE PIkIIJtO AMD PROP TURN THE ROART HIALANCER tools correctly set up model fly time Send eelf -addressed stamped complete product cataloe todayRolart Manufacturing IncPOox 1247 Eleven-pole three-pole armatures Note skewed stack laminations visible 11-pole version Optional Builders Top $2500 44 Tall Accomodates Any Length Plane Equipped Handes Convenient Transporting Home Fietd Made unfinished pressure treated lumber withstand years fuel weather abuse base made using 2 8 tilt-resisting legs storage area between upright columns Upright cot umna pressure-treated 2 4s mid-level shelf field boa storage cotumna also feature two hooks transmitter storage padded horizontal rests supporting model during inspection repair aircraft hetd table means two standard length rubber bands end dowet posts prevent modet accidentally being bumped off platform Optional 48 30 plywood builders top attaches metal screws minutes easily removed reverting back field repair use necessary hardware included both items sold kit form Check first local hobby shop available may ordered direct Shipping weight 30 lbs table 18 lbs builders top LINCOLN WOODCRAFT 935 Winchester Hwy tteville TN 37334 615-433-4808 80 Model Aviation ture poles trying turn armature shaft will tend cog index given armature pole aligns pull field poles Sometimes magnetic force great cant turn shaft itself grabbing prop assist Sometimes armature poles easier turn shaft manuallythere fewer distinct indices Hobby motors have least three armature poles have some 11 Some armature stacks skewed armature poles slots formed parallel shaft angular relationship skewing tends blur otherwise distinct pole shape pull field magnets also allows motor run easily turned hand run smoothly lower speeds Such motor said have low cogging commutator round insulated assembly separate metal segments Like stack located armature shaft normally positioned rear end armature shaft just inside rear motor housing bearing wire ends armature windings connected commutator segments sort daisy-chain manner segments have specific physical relationship angular location relative armature poles commutator segments form part moving switch other part pair brushes usually small spring-loaded conductive black blocks ride commutator segments Brushes have fixed position position range relative magnets motor housing commutator segments rotate under brush contacts armature spins brush angle adjustment actually setting angular relationship field poles brush positions two external motor terminals points external battery voltage applied actually connections brushes voltage applied motor brush terminals also applied particular set commutator segments brush contact results current flow armature windings weighted distributed manner Current flow winding armature pole pole group causes become magnetized electromagnet thus attracted repelled nearest permanent magnet field pole starts rotation armature shaft Whats fundamental relative mechanical relationship permanent magnets brushes armature poles commutator segments right magnetic attraction repulsion causes armature turn moving CE sive field testing give great well Beller engine protection Consistent runs Cooler operating temperatures a,--, nffr full line of fuels ranging 0% price attractive inferior fuels Whet youre cars boats ducted fans fixed wing rotaly wing theres Byron Fuel blended specifically needs including three premium Byron RACE car fuels ick Byron Fuel contact us direct Grove IA 51445 364-3165 blended fuels lead industry Innsistent operation rrface tension e flow-rate Get fueling confidence Get Byron Fuel fuel champions BYRON ORIGINA LSINc commutator segments correct new brush contact position allow magnetization next upcoming armature pole effect rotating armature switches its own windings off selectively just right time sequentially magnetize moving poles keep em moving little imagination will let see sustaining process allowing continued rotation armature Now lets look some aspects motor makeup operation detail field magnets parts often described advertising cobalt ferrite neodymthe magnet material given material volume some magnets stronger others such cobalt over ferrite Stronger magnets better weaker ones several reasons else being equal stronger fields torque motor has relative terms can turn larger prop slower lower current Extraflux rings available some motors iron tubes slip over outside motor housing better connect two individual field magnets thickening motor housing improving magnetic circuit produces stronger magnetic field inside motor armature resides rotates productive motor housing material relatively thin begin Conversely else being equal weaker magnetic field faster armature will turn lower torque Carried too far results very-highspeed nearly useless motor Moving armature given voltage else being equal fewer turns windings faster armature will spin fewer poles faster armature will spin will tend cog Higher rpm per se necessarily good purposes associated torque high enough turn appropriate prop given model youre getting feeling everything motor design tradeoff sorts youre rightnot technical ways also matters cost good motor might described part having relatively high speed high torque low current drain high efficiency small size light weight low cost As might imagine hard attain same time Electrical aspects motor operation voltage applied brush terminals armature turns current flows largely dictated external load prop motor An unloaded motor no prop requires very little input power voltage times current run its doing very little work 21st CENTURYIRON ha designed ground up master modelers Itsue shoe design will reach places other irons can dream ofand its fully contoured shape allows dent-freeapplication temperature control dial handle hot shoe no burned fingers Its specially ulated coating delivers remarkable slip characteristics smoothest no-drag slide over virtually covering surface custom-fitted covering sock sturdy table top stand included free costs little conventional irons its last iron youll ever buy smart iron Coverite REAR HOSE IDST*TUSOF WSWEOATUKE CSYSTEM TEESSEArIJEE COSTEOL ASUNHEPON HANDLE NOT ON SHOE stromSTTNSBATUAST 50559W 51005 FINSEES SN HOT SHOE 01St TEUTRATLJEE ACCLLEATETON1THIN5DEGEEES FAHRENAEITOF SHOE TEE4FEHAOUESI...4 SIDEEASES WETENGOF DUETSTN SEE ADAPTOR THROW AWAY YOUR COLLETS CHUCK & WRENCH USE OUR ADAPTOR & KEYLESS CHUCK IBTOSR2 CAP ON ALL OREME POWER TOOLS INCLUDING 750 MINIMITE & EXIBLE SHAFT RUNS 100% TRUE & CONCENTRIC AT FULL RPM NO 501 ADAPTORKEYLESS CHUCKS1895 650 395 00 NOT NEED ADAPTOR TO USE KEYLESS CHUCKI STEEL SAW AND ARBOR HARDENED GROUM3 & POliSHED STEEL USED FOR CurliNG PLASTIC WOOD SOFT METALS LESAN PLEXIGLASS & ETC AVAILABLE IN 006006 010012 014 016018 V OUTSIDE DIAMETER 0 $676 EA J020023025 028 022Th1C1NESS NO 502ARBOR$600 NO 503VX014X1/4SAWS600 OUR SAWS ONLY WORK WITH OUR ARBOR ABRASIVE CUT-OFF BLADES FIBERGLASS REINFORCED-RESISTS METALS ALL BLADES 1/32 THICK SAWS AND CUT-OFF BLADES ONLY WORK W11H 0510 NDBORI NO NEED FOR PUNT OR MATCHES MICROJUST PRESS THE PESO SELF-STARliNG BUTTON FOR MICRO SIZE ADJUSTABLE SELFFLAME THAT BURNS AT 2370 FOR UP TO STARTING3HOURSOPERATESON STANDARD BUTANE AND IS TORCHREFILLABLE TANK FITS COMFORTABLY IN ThE PALM OF YOUR HAND AND IS MT77MADE OF HIGH IMPACT RUBBER WHICH Blow TorchALLOWS FOR SAFE NON-SLIP DRIP I.IIh rn ES blatRoD $3500 SUPPLIED WTTH CAN OF BUTANE EASTERN TOOL&SUPPLYCO0000001750 149 GRAND ST -Nyc. NY 1001321239-3741 CATALOG FREE WTI-I ORDERFP&215-905-bIt THE WOFLEJS DIlLY COUEFII1O IFiQIl WITH fiFTIFID1iL IFiTEILIOEFEE creation space age technology 21st CENTURY IRON makes other covering irons obsolete No guesswork major iron-on covering manufacturers recommend specific application shrinking temperatures achieve tightest longest lasting possible finish Only 21st CENTURY IRON has built-in temperature control system accurate within three degrees Fahrenheit dial setting Simply set dial desired temperature Temperature Processing Indicator TPI lights iron temperature rises reach dial setting TPI blinks set temperature reached telling its time cover No thermometer complicated testing needed advanced tool iron allows dial specific temoerature C0VERE 420 BASHLOR ROAD ROANFIAM PENI4SYIHANIA 19044 SANYO 1700 SCRC MATCHED INDIVIDUAL CELLS$550 EA $450 EA $300 EA $350 EA $350 EA $350 EA $150 EA SANYO RECHARGEABLE AA INDIVIDUAL CELLS 82 Model Aviation 4Adding prop immediately raises demand current since power needed work turning prop rpm given motor directly related applied voltage voltage greater rpm relatively small increase voltage rpm results larger increase current practical application means adding cell pack can make big difference power motor can take Ideallyif no losses motorthe rpm would dictated voltage principle would independent load placed Real motors have real losses inefficiencies due primarily resistance present brushes brush/commutator contact armature windings resistances what gets hot current flows through As result motor rpm will drop some load applied strong temptation use massive brushes large commutators few turns thick wire possible windings again fewer turns means higher rpm often practical gear drives good example growing popularity high-speed car motors large-ratio gear drives turning big props Alternatively concert stronger field magnets can used lower high rpm bolster torque producing double benefit As other things practical limits what can physically achieved tradeoffs hope brief look motors has provided some feel work may differ among themselves Upcoming columns will look motor operation application cell count some influences prop choice Please include SASE correspondence youd like reply Happy quiet E-power landings COO Prepare models IIWflJTEsurface perfect IIfinish Hobbico HobbyLite Filler Practically weighlless.simple use Ideal balsa fibeglass foam Great valueget filler money Specially developed tor model building nicroballoon-rich HobbyLite spreads easily dries tast same consistency balsa tor smooth sanding HobbyLite doesnt shrink hs almost nothing Get generous 8-ounce sup ply fraction ot other fillers price Available white balsa colors hobby dealers everywhere intormation location ot dealer nearest please call 18006828948 mention code number 047E Distributed exclusively GREAT PLANES MODEL DISTRIBUTORS COMPANY PO Box 9021 champaign IL 61828-9021 Copyright 19953074176 SANYO 1700 SCRC INDIVIDUAL CELLS SANYO 1400 SCR INDIVIDUAL CELLS SANYO N1000 SCR INDIVDUAL CELLS SANYO N800 AR INDIVIDUAL CELLS SANYO N600 INDIVIDUAL CELLS
Edition: Model Aviation - 1995/09
Page Numbers: 77, 79, 80, 81, 82
RADIO CONTROL ELECTRICS THIS MONTHS TOPICS include unusual Electric Connection Service club call reader query 1995 KRC Electric Fly Seminar schedule continuing discussion motor/prop/battery basics Ron Torrito longtime E-modeler Northern Connecticut Radio Control Club wrote tell interest communicating other E-minded modelers Internet Ron asking ECS could used list Net addresses hope encouraging such communication Sure first ECS Internet listing Rons R Torrito@AOLcom mailing address 1625 Main St East Hartford CT 06108 anyone else interested providing Internet address ECS listing just send Ill get upcoming column know about ones membership openings readers can join up Im asking interested Electric clubs write suitable contact information November 30 1995 Ill compile present listing early 96 regularly receive E-club newsletters around country treat read Its amazing much effort put amount product technical information contain size content some newsletters actually dwarf typical monthly magazine column comparison Ive often thought nice would somehow info E-club newsletters could compiled annual master newsletter book Some clubs make newsletters available non-members small fee Id like club responding above indicate newsletters available E-modeldom large price mailing address well Id like dedicate future Electric Connection Service listing Electric clubs Im anxious to Its very difficult columnist please document clubs Im especially eager everyone time try include something everyone over course time cant always tell received readership large Some readers write reaction silent Much columns makeup own judgment some influence incoming mail questions comment Id like very much hear folks specific interests needs likes dislikes about column Depending collective response Ill try adjust column content best suit average Just write preliminary schedule 1995 KRC Electric Fly Seminar scheduled Friday September 15 sponsored SR Batteries will again held Best Western Motor Lodge Quakertown PA about four miles flying field Scheduled speakers topics include Micro-Electrics Clyde Geist Electric Old Timers Bob Aberle Rx Tx Pack Care Feeding Larry Sribnick Computerized Radio Systems Dave Baron Electric Flying September1995 77 Commutator winding connections segments brush spiral brush spring Large openings cooling three-pole armature windings removed Poles slots clearly visible Rear view opened economy r clearly showsRear end bell motor housing two brush holders Spring two shaped ferrite magnetspresses brush contact commutator Wings Keith Shaw Electric Control Line Bob Hunt Electric Ducted Fan Flying Tom Hunt Twin Motor Gear Drives Clyde Geist Electronic Speed Controls Martin Euredjian Getting Most Motor Larry Sribnick Electric Night Flying Bob Kopski Online Services NEAC Larry Sribnick interested attending 9 am-5 pm seminar can contact Larry Sribnick SR Batteries Inc Box 287 Bellport NY 11713 Tel 516 286-0079 fax 516 286-0901 Registration reservations required fee $15 Last years seminar sellout dont dilly-dally Night Flying begins about two hours after seminar closes Last year 200 persons field witness nifty display SASE will get five-page KRC Electric Fly mailer Electric Fly Manager Anthony Assetto 639 Neshaminy Ave Warrington PA 18976 Tel 215 491-9419 Meet dates September 15-17 Last months column included discussion Motor/Battery/Prop Basics continuation Modelers often puzzled motor terms makeup operation Examples common questions concern armature windings turns motor magnets proper voltage Lets take look some starting conventional brnshed motors brushless motors will covered later column motors use permanent magnet motorsthe motor housing contains permanent magnets also referred field magnets typically attached around curved inner surface motor housing magnets also shaped inner space between forms empty cylinder Normally motors have two magnets magnet assemblies forming diametrically opposed magnetic poles within motor housingthe classic north south poles individual field pole magnets connected other iron motor housing interconnection actually magnetic circuit Nearly motors have openings somewhere housing some inner stuff visible outside annaturethe assembly motor shaftresides inside between two magnetic poles just described does touch field magnets sized spaced rotate very close field pole faces effect armature metalwork immersed strong magnetic field exists between two field poles typical armature consists mainly thin laminated iron plates form stack along armature shaft individual laminations hence stack shaped form armature poles spaces/grooves between armature poles called slots poles groups poles wound insulated wire magnet wire passed through slots form what known armature windings Unlike field magnets iron armature poles magnetized armature has few poles permanent field magnets strong can feel resulting pull metal September 1995 79 ROAR1S SURFACE DEFLECTION INDICATOR IS GREAT FOR PRECISION ADJUSTMENTS OF ELEVATORS AILERONS FLAPS AND RUDDER ANDTOMAKESURE PIkIIJtO AMD PROP TURN THE ROART HIALANCER tools correctly set up model fly time Send eelf -addressed stamped complete product cataloe todayRolart Manufacturing IncPOox 1247 Eleven-pole three-pole armatures Note skewed stack laminations visible 11-pole version Optional Builders Top $2500 44 Tall Accomodates Any Length Plane Equipped Handes Convenient Transporting Home Fietd Made unfinished pressure treated lumber withstand years fuel weather abuse base made using 2 8 tilt-resisting legs storage area between upright columns Upright cot umna pressure-treated 2 4s mid-level shelf field boa storage cotumna also feature two hooks transmitter storage padded horizontal rests supporting model during inspection repair aircraft hetd table means two standard length rubber bands end dowet posts prevent modet accidentally being bumped off platform Optional 48 30 plywood builders top attaches metal screws minutes easily removed reverting back field repair use necessary hardware included both items sold kit form Check first local hobby shop available may ordered direct Shipping weight 30 lbs table 18 lbs builders top LINCOLN WOODCRAFT 935 Winchester Hwy tteville TN 37334 615-433-4808 80 Model Aviation ture poles trying turn armature shaft will tend cog index given armature pole aligns pull field poles Sometimes magnetic force great cant turn shaft itself grabbing prop assist Sometimes armature poles easier turn shaft manuallythere fewer distinct indices Hobby motors have least three armature poles have some 11 Some armature stacks skewed armature poles slots formed parallel shaft angular relationship skewing tends blur otherwise distinct pole shape pull field magnets also allows motor run easily turned hand run smoothly lower speeds Such motor said have low cogging commutator round insulated assembly separate metal segments Like stack located armature shaft normally positioned rear end armature shaft just inside rear motor housing bearing wire ends armature windings connected commutator segments sort daisy-chain manner segments have specific physical relationship angular location relative armature poles commutator segments form part moving switch other part pair brushes usually small spring-loaded conductive black blocks ride commutator segments Brushes have fixed position position range relative magnets motor housing commutator segments rotate under brush contacts armature spins brush angle adjustment actually setting angular relationship field poles brush positions two external motor terminals points external battery voltage applied actually connections brushes voltage applied motor brush terminals also applied particular set commutator segments brush contact results current flow armature windings weighted distributed manner Current flow winding armature pole pole group causes become magnetized electromagnet thus attracted repelled nearest permanent magnet field pole starts rotation armature shaft Whats fundamental relative mechanical relationship permanent magnets brushes armature poles commutator segments right magnetic attraction repulsion causes armature turn moving CE sive field testing give great well Beller engine protection Consistent runs Cooler operating temperatures a,--, nffr full line of fuels ranging 0% price attractive inferior fuels Whet youre cars boats ducted fans fixed wing rotaly wing theres Byron Fuel blended specifically needs including three premium Byron RACE car fuels ick Byron Fuel contact us direct Grove IA 51445 364-3165 blended fuels lead industry Innsistent operation rrface tension e flow-rate Get fueling confidence Get Byron Fuel fuel champions BYRON ORIGINA LSINc commutator segments correct new brush contact position allow magnetization next upcoming armature pole effect rotating armature switches its own windings off selectively just right time sequentially magnetize moving poles keep em moving little imagination will let see sustaining process allowing continued rotation armature Now lets look some aspects motor makeup operation detail field magnets parts often described advertising cobalt ferrite neodymthe magnet material given material volume some magnets stronger others such cobalt over ferrite Stronger magnets better weaker ones several reasons else being equal stronger fields torque motor has relative terms can turn larger prop slower lower current Extraflux rings available some motors iron tubes slip over outside motor housing better connect two individual field magnets thickening motor housing improving magnetic circuit produces stronger magnetic field inside motor armature resides rotates productive motor housing material relatively thin begin Conversely else being equal weaker magnetic field faster armature will turn lower torque Carried too far results very-highspeed nearly useless motor Moving armature given voltage else being equal fewer turns windings faster armature will spin fewer poles faster armature will spin will tend cog Higher rpm per se necessarily good purposes associated torque high enough turn appropriate prop given model youre getting feeling everything motor design tradeoff sorts youre rightnot technical ways also matters cost good motor might described part having relatively high speed high torque low current drain high efficiency small size light weight low cost As might imagine hard attain same time Electrical aspects motor operation voltage applied brush terminals armature turns current flows largely dictated external load prop motor An unloaded motor no prop requires very little input power voltage times current run its doing very little work 21st CENTURYIRON ha designed ground up master modelers Itsue shoe design will reach places other irons can dream ofand its fully contoured shape allows dent-freeapplication temperature control dial handle hot shoe no burned fingers Its specially ulated coating delivers remarkable slip characteristics smoothest no-drag slide over virtually covering surface custom-fitted covering sock sturdy table top stand included free costs little conventional irons its last iron youll ever buy smart iron Coverite REAR HOSE IDST*TUSOF WSWEOATUKE CSYSTEM TEESSEArIJEE COSTEOL ASUNHEPON HANDLE NOT ON SHOE stromSTTNSBATUAST 50559W 51005 FINSEES SN HOT SHOE 01St TEUTRATLJEE ACCLLEATETON1THIN5DEGEEES FAHRENAEITOF SHOE TEE4FEHAOUESI...4 SIDEEASES WETENGOF DUETSTN SEE ADAPTOR THROW AWAY YOUR COLLETS CHUCK & WRENCH USE OUR ADAPTOR & KEYLESS CHUCK IBTOSR2 CAP ON ALL OREME POWER TOOLS INCLUDING 750 MINIMITE & EXIBLE SHAFT RUNS 100% TRUE & CONCENTRIC AT FULL RPM NO 501 ADAPTORKEYLESS CHUCKS1895 650 395 00 NOT NEED ADAPTOR TO USE KEYLESS CHUCKI STEEL SAW AND ARBOR HARDENED GROUM3 & POliSHED STEEL USED FOR CurliNG PLASTIC WOOD SOFT METALS LESAN PLEXIGLASS & ETC AVAILABLE IN 006006 010012 014 016018 V OUTSIDE DIAMETER 0 $676 EA J020023025 028 022Th1C1NESS NO 502ARBOR$600 NO 503VX014X1/4SAWS600 OUR SAWS ONLY WORK WITH OUR ARBOR ABRASIVE CUT-OFF BLADES FIBERGLASS REINFORCED-RESISTS METALS ALL BLADES 1/32 THICK SAWS AND CUT-OFF BLADES ONLY WORK W11H 0510 NDBORI NO NEED FOR PUNT OR MATCHES MICROJUST PRESS THE PESO SELF-STARliNG BUTTON FOR MICRO SIZE ADJUSTABLE SELFFLAME THAT BURNS AT 2370 FOR UP TO STARTING3HOURSOPERATESON STANDARD BUTANE AND IS TORCHREFILLABLE TANK FITS COMFORTABLY IN ThE PALM OF YOUR HAND AND IS MT77MADE OF HIGH IMPACT RUBBER WHICH Blow TorchALLOWS FOR SAFE NON-SLIP DRIP I.IIh rn ES blatRoD $3500 SUPPLIED WTTH CAN OF BUTANE EASTERN TOOL&SUPPLYCO0000001750 149 GRAND ST -Nyc. NY 1001321239-3741 CATALOG FREE WTI-I ORDERFP&215-905-bIt THE WOFLEJS DIlLY COUEFII1O IFiQIl WITH fiFTIFID1iL IFiTEILIOEFEE creation space age technology 21st CENTURY IRON makes other covering irons obsolete No guesswork major iron-on covering manufacturers recommend specific application shrinking temperatures achieve tightest longest lasting possible finish Only 21st CENTURY IRON has built-in temperature control system accurate within three degrees Fahrenheit dial setting Simply set dial desired temperature Temperature Processing Indicator TPI lights iron temperature rises reach dial setting TPI blinks set temperature reached telling its time cover No thermometer complicated testing needed advanced tool iron allows dial specific temoerature C0VERE 420 BASHLOR ROAD ROANFIAM PENI4SYIHANIA 19044 SANYO 1700 SCRC MATCHED INDIVIDUAL CELLS$550 EA $450 EA $300 EA $350 EA $350 EA $350 EA $150 EA SANYO RECHARGEABLE AA INDIVIDUAL CELLS 82 Model Aviation 4Adding prop immediately raises demand current since power needed work turning prop rpm given motor directly related applied voltage voltage greater rpm relatively small increase voltage rpm results larger increase current practical application means adding cell pack can make big difference power motor can take Ideallyif no losses motorthe rpm would dictated voltage principle would independent load placed Real motors have real losses inefficiencies due primarily resistance present brushes brush/commutator contact armature windings resistances what gets hot current flows through As result motor rpm will drop some load applied strong temptation use massive brushes large commutators few turns thick wire possible windings again fewer turns means higher rpm often practical gear drives good example growing popularity high-speed car motors large-ratio gear drives turning big props Alternatively concert stronger field magnets can used lower high rpm bolster torque producing double benefit As other things practical limits what can physically achieved tradeoffs hope brief look motors has provided some feel work may differ among themselves Upcoming columns will look motor operation application cell count some influences prop choice Please include SASE correspondence youd like reply Happy quiet E-power landings COO Prepare models IIWflJTEsurface perfect IIfinish Hobbico HobbyLite Filler Practically weighlless.simple use Ideal balsa fibeglass foam Great valueget filler money Specially developed tor model building nicroballoon-rich HobbyLite spreads easily dries tast same consistency balsa tor smooth sanding HobbyLite doesnt shrink hs almost nothing Get generous 8-ounce sup ply fraction ot other fillers price Available white balsa colors hobby dealers everywhere intormation location ot dealer nearest please call 18006828948 mention code number 047E Distributed exclusively GREAT PLANES MODEL DISTRIBUTORS COMPANY PO Box 9021 champaign IL 61828-9021 Copyright 19953074176 SANYO 1700 SCRC INDIVIDUAL CELLS SANYO 1400 SCR INDIVIDUAL CELLS SANYO N1000 SCR INDIVDUAL CELLS SANYO N800 AR INDIVIDUAL CELLS SANYO N600 INDIVIDUAL CELLS
Edition: Model Aviation - 1995/09
Page Numbers: 77, 79, 80, 81, 82
RADIO CONTROL ELECTRICS THIS MONTHS TOPICS include unusual Electric Connection Service club call reader query 1995 KRC Electric Fly Seminar schedule continuing discussion motor/prop/battery basics Ron Torrito longtime E-modeler Northern Connecticut Radio Control Club wrote tell interest communicating other E-minded modelers Internet Ron asking ECS could used list Net addresses hope encouraging such communication Sure first ECS Internet listing Rons R Torrito@AOLcom mailing address 1625 Main St East Hartford CT 06108 anyone else interested providing Internet address ECS listing just send Ill get upcoming column know about ones membership openings readers can join up Im asking interested Electric clubs write suitable contact information November 30 1995 Ill compile present listing early 96 regularly receive E-club newsletters around country treat read Its amazing much effort put amount product technical information contain size content some newsletters actually dwarf typical monthly magazine column comparison Ive often thought nice would somehow info E-club newsletters could compiled annual master newsletter book Some clubs make newsletters available non-members small fee Id like club responding above indicate newsletters available E-modeldom large price mailing address well Id like dedicate future Electric Connection Service listing Electric clubs Im anxious to Its very difficult columnist please document clubs Im especially eager everyone time try include something everyone over course time cant always tell received readership large Some readers write reaction silent Much columns makeup own judgment some influence incoming mail questions comment Id like very much hear folks specific interests needs likes dislikes about column Depending collective response Ill try adjust column content best suit average Just write preliminary schedule 1995 KRC Electric Fly Seminar scheduled Friday September 15 sponsored SR Batteries will again held Best Western Motor Lodge Quakertown PA about four miles flying field Scheduled speakers topics include Micro-Electrics Clyde Geist Electric Old Timers Bob Aberle Rx Tx Pack Care Feeding Larry Sribnick Computerized Radio Systems Dave Baron Electric Flying September1995 77 Commutator winding connections segments brush spiral brush spring Large openings cooling three-pole armature windings removed Poles slots clearly visible Rear view opened economy r clearly showsRear end bell motor housing two brush holders Spring two shaped ferrite magnetspresses brush contact commutator Wings Keith Shaw Electric Control Line Bob Hunt Electric Ducted Fan Flying Tom Hunt Twin Motor Gear Drives Clyde Geist Electronic Speed Controls Martin Euredjian Getting Most Motor Larry Sribnick Electric Night Flying Bob Kopski Online Services NEAC Larry Sribnick interested attending 9 am-5 pm seminar can contact Larry Sribnick SR Batteries Inc Box 287 Bellport NY 11713 Tel 516 286-0079 fax 516 286-0901 Registration reservations required fee $15 Last years seminar sellout dont dilly-dally Night Flying begins about two hours after seminar closes Last year 200 persons field witness nifty display SASE will get five-page KRC Electric Fly mailer Electric Fly Manager Anthony Assetto 639 Neshaminy Ave Warrington PA 18976 Tel 215 491-9419 Meet dates September 15-17 Last months column included discussion Motor/Battery/Prop Basics continuation Modelers often puzzled motor terms makeup operation Examples common questions concern armature windings turns motor magnets proper voltage Lets take look some starting conventional brnshed motors brushless motors will covered later column motors use permanent magnet motorsthe motor housing contains permanent magnets also referred field magnets typically attached around curved inner surface motor housing magnets also shaped inner space between forms empty cylinder Normally motors have two magnets magnet assemblies forming diametrically opposed magnetic poles within motor housingthe classic north south poles individual field pole magnets connected other iron motor housing interconnection actually magnetic circuit Nearly motors have openings somewhere housing some inner stuff visible outside annaturethe assembly motor shaftresides inside between two magnetic poles just described does touch field magnets sized spaced rotate very close field pole faces effect armature metalwork immersed strong magnetic field exists between two field poles typical armature consists mainly thin laminated iron plates form stack along armature shaft individual laminations hence stack shaped form armature poles spaces/grooves between armature poles called slots poles groups poles wound insulated wire magnet wire passed through slots form what known armature windings Unlike field magnets iron armature poles magnetized armature has few poles permanent field magnets strong can feel resulting pull metal September 1995 79 ROAR1S SURFACE DEFLECTION INDICATOR IS GREAT FOR PRECISION ADJUSTMENTS OF ELEVATORS AILERONS FLAPS AND RUDDER ANDTOMAKESURE PIkIIJtO AMD PROP TURN THE ROART HIALANCER tools correctly set up model fly time Send eelf -addressed stamped complete product cataloe todayRolart Manufacturing IncPOox 1247 Eleven-pole three-pole armatures Note skewed stack laminations visible 11-pole version Optional Builders Top $2500 44 Tall Accomodates Any Length Plane Equipped Handes Convenient Transporting Home Fietd Made unfinished pressure treated lumber withstand years fuel weather abuse base made using 2 8 tilt-resisting legs storage area between upright columns Upright cot umna pressure-treated 2 4s mid-level shelf field boa storage cotumna also feature two hooks transmitter storage padded horizontal rests supporting model during inspection repair aircraft hetd table means two standard length rubber bands end dowet posts prevent modet accidentally being bumped off platform Optional 48 30 plywood builders top attaches metal screws minutes easily removed reverting back field repair use necessary hardware included both items sold kit form Check first local hobby shop available may ordered direct Shipping weight 30 lbs table 18 lbs builders top LINCOLN WOODCRAFT 935 Winchester Hwy tteville TN 37334 615-433-4808 80 Model Aviation ture poles trying turn armature shaft will tend cog index given armature pole aligns pull field poles Sometimes magnetic force great cant turn shaft itself grabbing prop assist Sometimes armature poles easier turn shaft manuallythere fewer distinct indices Hobby motors have least three armature poles have some 11 Some armature stacks skewed armature poles slots formed parallel shaft angular relationship skewing tends blur otherwise distinct pole shape pull field magnets also allows motor run easily turned hand run smoothly lower speeds Such motor said have low cogging commutator round insulated assembly separate metal segments Like stack located armature shaft normally positioned rear end armature shaft just inside rear motor housing bearing wire ends armature windings connected commutator segments sort daisy-chain manner segments have specific physical relationship angular location relative armature poles commutator segments form part moving switch other part pair brushes usually small spring-loaded conductive black blocks ride commutator segments Brushes have fixed position position range relative magnets motor housing commutator segments rotate under brush contacts armature spins brush angle adjustment actually setting angular relationship field poles brush positions two external motor terminals points external battery voltage applied actually connections brushes voltage applied motor brush terminals also applied particular set commutator segments brush contact results current flow armature windings weighted distributed manner Current flow winding armature pole pole group causes become magnetized electromagnet thus attracted repelled nearest permanent magnet field pole starts rotation armature shaft Whats fundamental relative mechanical relationship permanent magnets brushes armature poles commutator segments right magnetic attraction repulsion causes armature turn moving CE sive field testing give great well Beller engine protection Consistent runs Cooler operating temperatures a,--, nffr full line of fuels ranging 0% price attractive inferior fuels Whet youre cars boats ducted fans fixed wing rotaly wing theres Byron Fuel blended specifically needs including three premium Byron RACE car fuels ick Byron Fuel contact us direct Grove IA 51445 364-3165 blended fuels lead industry Innsistent operation rrface tension e flow-rate Get fueling confidence Get Byron Fuel fuel champions BYRON ORIGINA LSINc commutator segments correct new brush contact position allow magnetization next upcoming armature pole effect rotating armature switches its own windings off selectively just right time sequentially magnetize moving poles keep em moving little imagination will let see sustaining process allowing continued rotation armature Now lets look some aspects motor makeup operation detail field magnets parts often described advertising cobalt ferrite neodymthe magnet material given material volume some magnets stronger others such cobalt over ferrite Stronger magnets better weaker ones several reasons else being equal stronger fields torque motor has relative terms can turn larger prop slower lower current Extraflux rings available some motors iron tubes slip over outside motor housing better connect two individual field magnets thickening motor housing improving magnetic circuit produces stronger magnetic field inside motor armature resides rotates productive motor housing material relatively thin begin Conversely else being equal weaker magnetic field faster armature will turn lower torque Carried too far results very-highspeed nearly useless motor Moving armature given voltage else being equal fewer turns windings faster armature will spin fewer poles faster armature will spin will tend cog Higher rpm per se necessarily good purposes associated torque high enough turn appropriate prop given model youre getting feeling everything motor design tradeoff sorts youre rightnot technical ways also matters cost good motor might described part having relatively high speed high torque low current drain high efficiency small size light weight low cost As might imagine hard attain same time Electrical aspects motor operation voltage applied brush terminals armature turns current flows largely dictated external load prop motor An unloaded motor no prop requires very little input power voltage times current run its doing very little work 21st CENTURYIRON ha designed ground up master modelers Itsue shoe design will reach places other irons can dream ofand its fully contoured shape allows dent-freeapplication temperature control dial handle hot shoe no burned fingers Its specially ulated coating delivers remarkable slip characteristics smoothest no-drag slide over virtually covering surface custom-fitted covering sock sturdy table top stand included free costs little conventional irons its last iron youll ever buy smart iron Coverite REAR HOSE IDST*TUSOF WSWEOATUKE CSYSTEM TEESSEArIJEE COSTEOL ASUNHEPON HANDLE NOT ON SHOE stromSTTNSBATUAST 50559W 51005 FINSEES SN HOT SHOE 01St TEUTRATLJEE ACCLLEATETON1THIN5DEGEEES FAHRENAEITOF SHOE TEE4FEHAOUESI...4 SIDEEASES WETENGOF DUETSTN SEE ADAPTOR THROW AWAY YOUR COLLETS CHUCK & WRENCH USE OUR ADAPTOR & KEYLESS CHUCK IBTOSR2 CAP ON ALL OREME POWER TOOLS INCLUDING 750 MINIMITE & EXIBLE SHAFT RUNS 100% TRUE & CONCENTRIC AT FULL RPM NO 501 ADAPTORKEYLESS CHUCKS1895 650 395 00 NOT NEED ADAPTOR TO USE KEYLESS CHUCKI STEEL SAW AND ARBOR HARDENED GROUM3 & POliSHED STEEL USED FOR CurliNG PLASTIC WOOD SOFT METALS LESAN PLEXIGLASS & ETC AVAILABLE IN 006006 010012 014 016018 V OUTSIDE DIAMETER 0 $676 EA J020023025 028 022Th1C1NESS NO 502ARBOR$600 NO 503VX014X1/4SAWS600 OUR SAWS ONLY WORK WITH OUR ARBOR ABRASIVE CUT-OFF BLADES FIBERGLASS REINFORCED-RESISTS METALS ALL BLADES 1/32 THICK SAWS AND CUT-OFF BLADES ONLY WORK W11H 0510 NDBORI NO NEED FOR PUNT OR MATCHES MICROJUST PRESS THE PESO SELF-STARliNG BUTTON FOR MICRO SIZE ADJUSTABLE SELFFLAME THAT BURNS AT 2370 FOR UP TO STARTING3HOURSOPERATESON STANDARD BUTANE AND IS TORCHREFILLABLE TANK FITS COMFORTABLY IN ThE PALM OF YOUR HAND AND IS MT77MADE OF HIGH IMPACT RUBBER WHICH Blow TorchALLOWS FOR SAFE NON-SLIP DRIP I.IIh rn ES blatRoD $3500 SUPPLIED WTTH CAN OF BUTANE EASTERN TOOL&SUPPLYCO0000001750 149 GRAND ST -Nyc. NY 1001321239-3741 CATALOG FREE WTI-I ORDERFP&215-905-bIt THE WOFLEJS DIlLY COUEFII1O IFiQIl WITH fiFTIFID1iL IFiTEILIOEFEE creation space age technology 21st CENTURY IRON makes other covering irons obsolete No guesswork major iron-on covering manufacturers recommend specific application shrinking temperatures achieve tightest longest lasting possible finish Only 21st CENTURY IRON has built-in temperature control system accurate within three degrees Fahrenheit dial setting Simply set dial desired temperature Temperature Processing Indicator TPI lights iron temperature rises reach dial setting TPI blinks set temperature reached telling its time cover No thermometer complicated testing needed advanced tool iron allows dial specific temoerature C0VERE 420 BASHLOR ROAD ROANFIAM PENI4SYIHANIA 19044 SANYO 1700 SCRC MATCHED INDIVIDUAL CELLS$550 EA $450 EA $300 EA $350 EA $350 EA $350 EA $150 EA SANYO RECHARGEABLE AA INDIVIDUAL CELLS 82 Model Aviation 4Adding prop immediately raises demand current since power needed work turning prop rpm given motor directly related applied voltage voltage greater rpm relatively small increase voltage rpm results larger increase current practical application means adding cell pack can make big difference power motor can take Ideallyif no losses motorthe rpm would dictated voltage principle would independent load placed Real motors have real losses inefficiencies due primarily resistance present brushes brush/commutator contact armature windings resistances what gets hot current flows through As result motor rpm will drop some load applied strong temptation use massive brushes large commutators few turns thick wire possible windings again fewer turns means higher rpm often practical gear drives good example growing popularity high-speed car motors large-ratio gear drives turning big props Alternatively concert stronger field magnets can used lower high rpm bolster torque producing double benefit As other things practical limits what can physically achieved tradeoffs hope brief look motors has provided some feel work may differ among themselves Upcoming columns will look motor operation application cell count some influences prop choice Please include SASE correspondence youd like reply Happy quiet E-power landings COO Prepare models IIWflJTEsurface perfect IIfinish Hobbico HobbyLite Filler Practically weighlless.simple use Ideal balsa fibeglass foam Great valueget filler money Specially developed tor model building nicroballoon-rich HobbyLite spreads easily dries tast same consistency balsa tor smooth sanding HobbyLite doesnt shrink hs almost nothing Get generous 8-ounce sup ply fraction ot other fillers price Available white balsa colors hobby dealers everywhere intormation location ot dealer nearest please call 18006828948 mention code number 047E Distributed exclusively GREAT PLANES MODEL DISTRIBUTORS COMPANY PO Box 9021 champaign IL 61828-9021 Copyright 19953074176 SANYO 1700 SCRC INDIVIDUAL CELLS SANYO 1400 SCR INDIVIDUAL CELLS SANYO N1000 SCR INDIVDUAL CELLS SANYO N800 AR INDIVIDUAL CELLS SANYO N600 INDIVIDUAL CELLS
Edition: Model Aviation - 1995/09
Page Numbers: 77, 79, 80, 81, 82
RADIO CONTROL ELECTRICS THIS MONTHS TOPICS include unusual Electric Connection Service club call reader query 1995 KRC Electric Fly Seminar schedule continuing discussion motor/prop/battery basics Ron Torrito longtime E-modeler Northern Connecticut Radio Control Club wrote tell interest communicating other E-minded modelers Internet Ron asking ECS could used list Net addresses hope encouraging such communication Sure first ECS Internet listing Rons R Torrito@AOLcom mailing address 1625 Main St East Hartford CT 06108 anyone else interested providing Internet address ECS listing just send Ill get upcoming column know about ones membership openings readers can join up Im asking interested Electric clubs write suitable contact information November 30 1995 Ill compile present listing early 96 regularly receive E-club newsletters around country treat read Its amazing much effort put amount product technical information contain size content some newsletters actually dwarf typical monthly magazine column comparison Ive often thought nice would somehow info E-club newsletters could compiled annual master newsletter book Some clubs make newsletters available non-members small fee Id like club responding above indicate newsletters available E-modeldom large price mailing address well Id like dedicate future Electric Connection Service listing Electric clubs Im anxious to Its very difficult columnist please document clubs Im especially eager everyone time try include something everyone over course time cant always tell received readership large Some readers write reaction silent Much columns makeup own judgment some influence incoming mail questions comment Id like very much hear folks specific interests needs likes dislikes about column Depending collective response Ill try adjust column content best suit average Just write preliminary schedule 1995 KRC Electric Fly Seminar scheduled Friday September 15 sponsored SR Batteries will again held Best Western Motor Lodge Quakertown PA about four miles flying field Scheduled speakers topics include Micro-Electrics Clyde Geist Electric Old Timers Bob Aberle Rx Tx Pack Care Feeding Larry Sribnick Computerized Radio Systems Dave Baron Electric Flying September1995 77 Commutator winding connections segments brush spiral brush spring Large openings cooling three-pole armature windings removed Poles slots clearly visible Rear view opened economy r clearly showsRear end bell motor housing two brush holders Spring two shaped ferrite magnetspresses brush contact commutator Wings Keith Shaw Electric Control Line Bob Hunt Electric Ducted Fan Flying Tom Hunt Twin Motor Gear Drives Clyde Geist Electronic Speed Controls Martin Euredjian Getting Most Motor Larry Sribnick Electric Night Flying Bob Kopski Online Services NEAC Larry Sribnick interested attending 9 am-5 pm seminar can contact Larry Sribnick SR Batteries Inc Box 287 Bellport NY 11713 Tel 516 286-0079 fax 516 286-0901 Registration reservations required fee $15 Last years seminar sellout dont dilly-dally Night Flying begins about two hours after seminar closes Last year 200 persons field witness nifty display SASE will get five-page KRC Electric Fly mailer Electric Fly Manager Anthony Assetto 639 Neshaminy Ave Warrington PA 18976 Tel 215 491-9419 Meet dates September 15-17 Last months column included discussion Motor/Battery/Prop Basics continuation Modelers often puzzled motor terms makeup operation Examples common questions concern armature windings turns motor magnets proper voltage Lets take look some starting conventional brnshed motors brushless motors will covered later column motors use permanent magnet motorsthe motor housing contains permanent magnets also referred field magnets typically attached around curved inner surface motor housing magnets also shaped inner space between forms empty cylinder Normally motors have two magnets magnet assemblies forming diametrically opposed magnetic poles within motor housingthe classic north south poles individual field pole magnets connected other iron motor housing interconnection actually magnetic circuit Nearly motors have openings somewhere housing some inner stuff visible outside annaturethe assembly motor shaftresides inside between two magnetic poles just described does touch field magnets sized spaced rotate very close field pole faces effect armature metalwork immersed strong magnetic field exists between two field poles typical armature consists mainly thin laminated iron plates form stack along armature shaft individual laminations hence stack shaped form armature poles spaces/grooves between armature poles called slots poles groups poles wound insulated wire magnet wire passed through slots form what known armature windings Unlike field magnets iron armature poles magnetized armature has few poles permanent field magnets strong can feel resulting pull metal September 1995 79 ROAR1S SURFACE DEFLECTION INDICATOR IS GREAT FOR PRECISION ADJUSTMENTS OF ELEVATORS AILERONS FLAPS AND RUDDER ANDTOMAKESURE PIkIIJtO AMD PROP TURN THE ROART HIALANCER tools correctly set up model fly time Send eelf -addressed stamped complete product cataloe todayRolart Manufacturing IncPOox 1247 Eleven-pole three-pole armatures Note skewed stack laminations visible 11-pole version Optional Builders Top $2500 44 Tall Accomodates Any Length Plane Equipped Handes Convenient Transporting Home Fietd Made unfinished pressure treated lumber withstand years fuel weather abuse base made using 2 8 tilt-resisting legs storage area between upright columns Upright cot umna pressure-treated 2 4s mid-level shelf field boa storage cotumna also feature two hooks transmitter storage padded horizontal rests supporting model during inspection repair aircraft hetd table means two standard length rubber bands end dowet posts prevent modet accidentally being bumped off platform Optional 48 30 plywood builders top attaches metal screws minutes easily removed reverting back field repair use necessary hardware included both items sold kit form Check first local hobby shop available may ordered direct Shipping weight 30 lbs table 18 lbs builders top LINCOLN WOODCRAFT 935 Winchester Hwy tteville TN 37334 615-433-4808 80 Model Aviation ture poles trying turn armature shaft will tend cog index given armature pole aligns pull field poles Sometimes magnetic force great cant turn shaft itself grabbing prop assist Sometimes armature poles easier turn shaft manuallythere fewer distinct indices Hobby motors have least three armature poles have some 11 Some armature stacks skewed armature poles slots formed parallel shaft angular relationship skewing tends blur otherwise distinct pole shape pull field magnets also allows motor run easily turned hand run smoothly lower speeds Such motor said have low cogging commutator round insulated assembly separate metal segments Like stack located armature shaft normally positioned rear end armature shaft just inside rear motor housing bearing wire ends armature windings connected commutator segments sort daisy-chain manner segments have specific physical relationship angular location relative armature poles commutator segments form part moving switch other part pair brushes usually small spring-loaded conductive black blocks ride commutator segments Brushes have fixed position position range relative magnets motor housing commutator segments rotate under brush contacts armature spins brush angle adjustment actually setting angular relationship field poles brush positions two external motor terminals points external battery voltage applied actually connections brushes voltage applied motor brush terminals also applied particular set commutator segments brush contact results current flow armature windings weighted distributed manner Current flow winding armature pole pole group causes become magnetized electromagnet thus attracted repelled nearest permanent magnet field pole starts rotation armature shaft Whats fundamental relative mechanical relationship permanent magnets brushes armature poles commutator segments right magnetic attraction repulsion causes armature turn moving CE sive field testing give great well Beller engine protection Consistent runs Cooler operating temperatures a,--, nffr full line of fuels ranging 0% price attractive inferior fuels Whet youre cars boats ducted fans fixed wing rotaly wing theres Byron Fuel blended specifically needs including three premium Byron RACE car fuels ick Byron Fuel contact us direct Grove IA 51445 364-3165 blended fuels lead industry Innsistent operation rrface tension e flow-rate Get fueling confidence Get Byron Fuel fuel champions BYRON ORIGINA LSINc commutator segments correct new brush contact position allow magnetization next upcoming armature pole effect rotating armature switches its own windings off selectively just right time sequentially magnetize moving poles keep em moving little imagination will let see sustaining process allowing continued rotation armature Now lets look some aspects motor makeup operation detail field magnets parts often described advertising cobalt ferrite neodymthe magnet material given material volume some magnets stronger others such cobalt over ferrite Stronger magnets better weaker ones several reasons else being equal stronger fields torque motor has relative terms can turn larger prop slower lower current Extraflux rings available some motors iron tubes slip over outside motor housing better connect two individual field magnets thickening motor housing improving magnetic circuit produces stronger magnetic field inside motor armature resides rotates productive motor housing material relatively thin begin Conversely else being equal weaker magnetic field faster armature will turn lower torque Carried too far results very-highspeed nearly useless motor Moving armature given voltage else being equal fewer turns windings faster armature will spin fewer poles faster armature will spin will tend cog Higher rpm per se necessarily good purposes associated torque high enough turn appropriate prop given model youre getting feeling everything motor design tradeoff sorts youre rightnot technical ways also matters cost good motor might described part having relatively high speed high torque low current drain high efficiency small size light weight low cost As might imagine hard attain same time Electrical aspects motor operation voltage applied brush terminals armature turns current flows largely dictated external load prop motor An unloaded motor no prop requires very little input power voltage times current run its doing very little work 21st CENTURYIRON ha designed ground up master modelers Itsue shoe design will reach places other irons can dream ofand its fully contoured shape allows dent-freeapplication temperature control dial handle hot shoe no burned fingers Its specially ulated coating delivers remarkable slip characteristics smoothest no-drag slide over virtually covering surface custom-fitted covering sock sturdy table top stand included free costs little conventional irons its last iron youll ever buy smart iron Coverite REAR HOSE IDST*TUSOF WSWEOATUKE CSYSTEM TEESSEArIJEE COSTEOL ASUNHEPON HANDLE NOT ON SHOE stromSTTNSBATUAST 50559W 51005 FINSEES SN HOT SHOE 01St TEUTRATLJEE ACCLLEATETON1THIN5DEGEEES FAHRENAEITOF SHOE TEE4FEHAOUESI...4 SIDEEASES WETENGOF DUETSTN SEE ADAPTOR THROW AWAY YOUR COLLETS CHUCK & WRENCH USE OUR ADAPTOR & KEYLESS CHUCK IBTOSR2 CAP ON ALL OREME POWER TOOLS INCLUDING 750 MINIMITE & EXIBLE SHAFT RUNS 100% TRUE & CONCENTRIC AT FULL RPM NO 501 ADAPTORKEYLESS CHUCKS1895 650 395 00 NOT NEED ADAPTOR TO USE KEYLESS CHUCKI STEEL SAW AND ARBOR HARDENED GROUM3 & POliSHED STEEL USED FOR CurliNG PLASTIC WOOD SOFT METALS LESAN PLEXIGLASS & ETC AVAILABLE IN 006006 010012 014 016018 V OUTSIDE DIAMETER 0 $676 EA J020023025 028 022Th1C1NESS NO 502ARBOR$600 NO 503VX014X1/4SAWS600 OUR SAWS ONLY WORK WITH OUR ARBOR ABRASIVE CUT-OFF BLADES FIBERGLASS REINFORCED-RESISTS METALS ALL BLADES 1/32 THICK SAWS AND CUT-OFF BLADES ONLY WORK W11H 0510 NDBORI NO NEED FOR PUNT OR MATCHES MICROJUST PRESS THE PESO SELF-STARliNG BUTTON FOR MICRO SIZE ADJUSTABLE SELFFLAME THAT BURNS AT 2370 FOR UP TO STARTING3HOURSOPERATESON STANDARD BUTANE AND IS TORCHREFILLABLE TANK FITS COMFORTABLY IN ThE PALM OF YOUR HAND AND IS MT77MADE OF HIGH IMPACT RUBBER WHICH Blow TorchALLOWS FOR SAFE NON-SLIP DRIP I.IIh rn ES blatRoD $3500 SUPPLIED WTTH CAN OF BUTANE EASTERN TOOL&SUPPLYCO0000001750 149 GRAND ST -Nyc. NY 1001321239-3741 CATALOG FREE WTI-I ORDERFP&215-905-bIt THE WOFLEJS DIlLY COUEFII1O IFiQIl WITH fiFTIFID1iL IFiTEILIOEFEE creation space age technology 21st CENTURY IRON makes other covering irons obsolete No guesswork major iron-on covering manufacturers recommend specific application shrinking temperatures achieve tightest longest lasting possible finish Only 21st CENTURY IRON has built-in temperature control system accurate within three degrees Fahrenheit dial setting Simply set dial desired temperature Temperature Processing Indicator TPI lights iron temperature rises reach dial setting TPI blinks set temperature reached telling its time cover No thermometer complicated testing needed advanced tool iron allows dial specific temoerature C0VERE 420 BASHLOR ROAD ROANFIAM PENI4SYIHANIA 19044 SANYO 1700 SCRC MATCHED INDIVIDUAL CELLS$550 EA $450 EA $300 EA $350 EA $350 EA $350 EA $150 EA SANYO RECHARGEABLE AA INDIVIDUAL CELLS 82 Model Aviation 4Adding prop immediately raises demand current since power needed work turning prop rpm given motor directly related applied voltage voltage greater rpm relatively small increase voltage rpm results larger increase current practical application means adding cell pack can make big difference power motor can take Ideallyif no losses motorthe rpm would dictated voltage principle would independent load placed Real motors have real losses inefficiencies due primarily resistance present brushes brush/commutator contact armature windings resistances what gets hot current flows through As result motor rpm will drop some load applied strong temptation use massive brushes large commutators few turns thick wire possible windings again fewer turns means higher rpm often practical gear drives good example growing popularity high-speed car motors large-ratio gear drives turning big props Alternatively concert stronger field magnets can used lower high rpm bolster torque producing double benefit As other things practical limits what can physically achieved tradeoffs hope brief look motors has provided some feel work may differ among themselves Upcoming columns will look motor operation application cell count some influences prop choice Please include SASE correspondence youd like reply Happy quiet E-power landings COO Prepare models IIWflJTEsurface perfect IIfinish Hobbico HobbyLite Filler Practically weighlless.simple use Ideal balsa fibeglass foam Great valueget filler money Specially developed tor model building nicroballoon-rich HobbyLite spreads easily dries tast same consistency balsa tor smooth sanding HobbyLite doesnt shrink hs almost nothing Get generous 8-ounce sup ply fraction ot other fillers price Available white balsa colors hobby dealers everywhere intormation location ot dealer nearest please call 18006828948 mention code number 047E Distributed exclusively GREAT PLANES MODEL DISTRIBUTORS COMPANY PO Box 9021 champaign IL 61828-9021 Copyright 19953074176 SANYO 1700 SCRC INDIVIDUAL CELLS SANYO 1400 SCR INDIVIDUAL CELLS SANYO N1000 SCR INDIVDUAL CELLS SANYO N800 AR INDIVIDUAL CELLS SANYO N600 INDIVIDUAL CELLS