George M Itlyers E LECTRICS past two years have very enthusiastic about electric-powered airplanes quiet peaceful should try Its dead electric motor controller succumbed crash damage STW high-rate 4 kHz soft-start on/off power controller BEC battery eliminator circuit designed handle 10 cells 25 amps F3E FAI class electric-powered sailplanes competition includes opto-isolation low-voltage high-temperature cutoff small light worked very well repair problem because made Germany Im trying take over Bob Kopskis world feel its right talk about new Made USA power controller bought WACO Electric sailplane see February 1993 column about model TREK POWER CONTROLLER about 1/2 X 1 x 1 /2 inches near future comparing sizes weights remember TREK requires separate RX battery Including four-cell 150-mAh pack makes equivalent numbers 1 x 1 X 31/2 inches weight 88 grams TREK Industries 75 Oregon Ave Medford NY 11763 manufacturer ESC-200-Optical speed controller available SR Batteries Tel 516 286-0079 Price $8995 convenient having both manufacturer retailer nearby Okay have new electric toy Im playing seems likely will have same questions proceed up learning curve ELECTRIC POWER ESTIMATES first thing confuses people terms used measure electricity look bag oranges can see big bag oranges look battery can see big cant see much charge contains So forced estimate charge based something charge wants get Out can measure pressure door Thats called voltage Unfortunately pressure doesnt change much charge runs out voltage isnt particularly good way estimate charge About can tell voltage battery fully charged Over 14 volts DC per Ni-Cd cell discharged Under 10 VDC per cell An expanded-scale voltmeter ESV lets guess whether battery half-charged less let charge run out can look through window wire count electrons pass point Well really flow charge through wire called amperes amps window called ammeter flow very small measure very small units called milliamps mAmilli means 1Aooo something electro-speak let charge run out measure time until something happens can say charge went past window X amps times Y minutes XY amp-minutes Since small batteries created power things use very little power run long time batteries can hold hand usually rated total bought TREK ESC-200-Optical speed controller replace dead STW TREK high-rate 25 kHz linear proportional control opto-isolator-but no BEC TREK draws 35 mA four- five-cell receiver RX pack designed control up 75 amps being drawn six through 18 Ni-Cd cells Its MOSFET ratings 120 amps continuous 300 amps surge MOSFETs special type transistor Metal-oxidesemiconductor field-effect transistor TREK controller smoothest linear power controller have ever used can turn prop slowly about revolution per second fast will go change rpm varies linearly off full motor stops whenever transmitter control signal lost no flyaways under power no crash-andburn prop stalls motor TREK ESC-200-Optical weighs 40 grams 15 oz connectors measures x 31/4 inches x inch lump MOSFETs stand up circuit board TREK Industries plans produce compact model April 1993 75 RC Flyizig Tody 70 Froehiich Farm Road Hicks viii NY 11801 Greg Pouloss Neptune has Astro geared 25 motor 18 Sanyo 1OOO-mAh SCR Ni-Cd cells weighs 625 pounds makes good water takeoffs landings charge capacity milliamp-hours mAh Amp-minutes convenient dimension people want use small batteries drive electric motors model airplanes want know capacity batteiy amp-hours divide its mAh rating 1000 want capacity ampminutes divide mAh 1000 multiply result 60 minutes per hour would lot easier power cells rated amp-minutes wouldnt Until paste field kit case forget divide 1000 multiply 60 Ive made up table conversion factors paste tool box too located elsewhere layout column Heres first secret formula 1 amp-minutes mAh Lets say want estimate long electric motor should run various battery packs Take motor put convenient test mount some kind legal use plane 1 Install prop and/or gearbox will use 2 Connect power pack via power controller 3 Measure amps drawn early part run dont have ammeter Ill show estimate amps 4 Measure run timethe length time power unit runs battery charge 5 Write down everything start six-cell 1 200-mAh battery because own measure current drawn motor/propeller combination youve got find 20 amps long should motor run Heres next secret formula 2 Run time minutes divided amps So scribble piece paper get 1200 x 06 mp-minutes power contained cell could look up chart So have fully charged pack current flowing out rate 20 amps can continue scribbling find 72 amp-minutes mps inutes run time sixcell battery pack measured run time stopwatch dont need ammeter Calculate average current drawn like 72 amp-minutes inutes mps What change propeller causes motor draw 12 amps scribbling gives new run time 72 ampminutes mps nutes What switch bigger 1800mAh pack scribbling 1800 x 06 amp-minutes 108 9 minutes What change number cells battery pack cells push current vice versa small increase say six seven cells current should increase about same amount new motor current will 12 x /6 mps new run time will 108 14 inutes opposite will happen reduce cell count five 12 x /6 mps 1530 255 15 108 108 minutes run time Making big changes such going seven 14 cells will result such linear changes because much increased current will go heat instead torque Youd better measure current make such switch flight propeller will unload little decreasing amps drawn increasing run time slightly run motor short time let batteries rest will recover little also can increase total run time slightly current drawn battery will constant will diminish steadily rate dependent upon load condition battery will increase run time slightly What Im telling you may get little run time flight ground-test calculations showThe thing beware big increase run time happens means battery pack getting old may have shorted cell Youll find lot black powder coming out motor draw too much current may also see sparking commutator can interfere radio Expect brushes inside motor wear out rapidly exceed manufacturers recommended cell count Continued poge 93 Ni-Cd Battery Factors Chart Battery Capacity mAh 250 500 800900 1000 1200 1800 Factor amp-minutes bc amps 20-mm amps numbers correct no matter cells pack long cells connected series Parallel connection cells bad 48546072108 89101218 2427303654 Left Guillows kit Grumman Hellcat built Harry Oestreicher Jr uses geared pair six-watt HiLine motors instead twisted rubber strands 76 Model Aviation 4Above Russ Pribanic holds 60s-era Sidewinder owner Dave Baron Power Astro cobalt 40 using 21 cells Does about two rolls per second 90 mph flat Ave Torrance CA 90505 Tel [310] 378-5679 has dogfighters designed event 704 Gus currently offers bakers dozen designs including following Ki-61 Ki-100 P-40C P-38 Spitfire Zero FW-190 D Ta-152C Typhoon F8F MC-202 LA-S Soviet stable ever-present P-51D Bf-109 although Gus drew Bf-109 G model Gus admits Typhoon P-38 may able meet weight limitations 704 rules decided introduce sport modelers because liked designs Several other plans 1A2-scale have published some diehard contestants have drawn up own plans Id like close out first column thanking interest support askingeven beggingfor some black-and-white photographs sent inclusion future columns Please send home address given beginning column will try best return photos Goodbye now until next time Remember check 6 lying TodaylMyors Continued page 76 Battery design condition big variables particularly exceed bC discharge rate lOC means dumping charge rate [amps] 10 times one-hour capacity marked cell As example lOC l200-mAh pack 12 amp-hours 12 amps see chart electric helicopter dumps charge about 20C Its high intolerable other hand WACO setup dumps about 70C eats batteries on-board battery weight criterion both cases difference F3E has climbed out sight 30 seconds Im going using excessively high current very long during run However prefer see helicopter hover least five minutes Sport fliers stiff-wing airplanes use propellers drain on-board power pack rate 20C 30C expect battery pack last about year Some batteries tolerate high discharge rates better others battery has diameter similar its length usually tolerates high discharge rates better slender like pencil coin opposite discharging charging force batterys chemistry reverse itself takes patience general want charge power packs rate less 3C will get job done 20 minutes Thats showed chart One-hour rates better C/l0 charge necessary after four five flights rebalance cell capacities Hand Selected Fiberglass Cowl Complete Plans Parts Hand Cut Instruction Manual Photo Page Model Andy ot Australia order kits call 1-800-327-7198 catalog fine kits send $400 Idaho Residents Add 5% State Sales Tax BALSA WORKBOARD RESISTS WARPING DS TRUE LASTING 2 SIZES AVAI LB LEAdd $475 per board shipping & handling WB3O 36x14x 1AIDAO $2098 VVU 398 Visa MasterCard money order check PAUL K GUILLOW INC PO Box 229 Wakefield MA 01880 617-245-5255 April 1993 93 typical 45 will turn 13-6 over 10000 get 3 minutes oz & idle well below 2000 UNLEASH POWER WITHIN DIESELIZE its AWESOME Bigger Engine Wont Fit r er Props r Economy Noise lowplugs Lowldle Ask poor local dealer call complete catalom soad sell-addressed 75C stamped #10 eavelopo SS0U crodited 1st order DAVIS DIESEL DEVDOPMENT ox 141 erd CT 08490 871-1010 AND BOLD DeH Beaver 96 15 lbs
Edition: Model Aviation - 1993/04
Page Numbers: 75, 76, 93
George M Itlyers E LECTRICS past two years have very enthusiastic about electric-powered airplanes quiet peaceful should try Its dead electric motor controller succumbed crash damage STW high-rate 4 kHz soft-start on/off power controller BEC battery eliminator circuit designed handle 10 cells 25 amps F3E FAI class electric-powered sailplanes competition includes opto-isolation low-voltage high-temperature cutoff small light worked very well repair problem because made Germany Im trying take over Bob Kopskis world feel its right talk about new Made USA power controller bought WACO Electric sailplane see February 1993 column about model TREK POWER CONTROLLER about 1/2 X 1 x 1 /2 inches near future comparing sizes weights remember TREK requires separate RX battery Including four-cell 150-mAh pack makes equivalent numbers 1 x 1 X 31/2 inches weight 88 grams TREK Industries 75 Oregon Ave Medford NY 11763 manufacturer ESC-200-Optical speed controller available SR Batteries Tel 516 286-0079 Price $8995 convenient having both manufacturer retailer nearby Okay have new electric toy Im playing seems likely will have same questions proceed up learning curve ELECTRIC POWER ESTIMATES first thing confuses people terms used measure electricity look bag oranges can see big bag oranges look battery can see big cant see much charge contains So forced estimate charge based something charge wants get Out can measure pressure door Thats called voltage Unfortunately pressure doesnt change much charge runs out voltage isnt particularly good way estimate charge About can tell voltage battery fully charged Over 14 volts DC per Ni-Cd cell discharged Under 10 VDC per cell An expanded-scale voltmeter ESV lets guess whether battery half-charged less let charge run out can look through window wire count electrons pass point Well really flow charge through wire called amperes amps window called ammeter flow very small measure very small units called milliamps mAmilli means 1Aooo something electro-speak let charge run out measure time until something happens can say charge went past window X amps times Y minutes XY amp-minutes Since small batteries created power things use very little power run long time batteries can hold hand usually rated total bought TREK ESC-200-Optical speed controller replace dead STW TREK high-rate 25 kHz linear proportional control opto-isolator-but no BEC TREK draws 35 mA four- five-cell receiver RX pack designed control up 75 amps being drawn six through 18 Ni-Cd cells Its MOSFET ratings 120 amps continuous 300 amps surge MOSFETs special type transistor Metal-oxidesemiconductor field-effect transistor TREK controller smoothest linear power controller have ever used can turn prop slowly about revolution per second fast will go change rpm varies linearly off full motor stops whenever transmitter control signal lost no flyaways under power no crash-andburn prop stalls motor TREK ESC-200-Optical weighs 40 grams 15 oz connectors measures x 31/4 inches x inch lump MOSFETs stand up circuit board TREK Industries plans produce compact model April 1993 75 RC Flyizig Tody 70 Froehiich Farm Road Hicks viii NY 11801 Greg Pouloss Neptune has Astro geared 25 motor 18 Sanyo 1OOO-mAh SCR Ni-Cd cells weighs 625 pounds makes good water takeoffs landings charge capacity milliamp-hours mAh Amp-minutes convenient dimension people want use small batteries drive electric motors model airplanes want know capacity batteiy amp-hours divide its mAh rating 1000 want capacity ampminutes divide mAh 1000 multiply result 60 minutes per hour would lot easier power cells rated amp-minutes wouldnt Until paste field kit case forget divide 1000 multiply 60 Ive made up table conversion factors paste tool box too located elsewhere layout column Heres first secret formula 1 amp-minutes mAh Lets say want estimate long electric motor should run various battery packs Take motor put convenient test mount some kind legal use plane 1 Install prop and/or gearbox will use 2 Connect power pack via power controller 3 Measure amps drawn early part run dont have ammeter Ill show estimate amps 4 Measure run timethe length time power unit runs battery charge 5 Write down everything start six-cell 1 200-mAh battery because own measure current drawn motor/propeller combination youve got find 20 amps long should motor run Heres next secret formula 2 Run time minutes divided amps So scribble piece paper get 1200 x 06 mp-minutes power contained cell could look up chart So have fully charged pack current flowing out rate 20 amps can continue scribbling find 72 amp-minutes mps inutes run time sixcell battery pack measured run time stopwatch dont need ammeter Calculate average current drawn like 72 amp-minutes inutes mps What change propeller causes motor draw 12 amps scribbling gives new run time 72 ampminutes mps nutes What switch bigger 1800mAh pack scribbling 1800 x 06 amp-minutes 108 9 minutes What change number cells battery pack cells push current vice versa small increase say six seven cells current should increase about same amount new motor current will 12 x /6 mps new run time will 108 14 inutes opposite will happen reduce cell count five 12 x /6 mps 1530 255 15 108 108 minutes run time Making big changes such going seven 14 cells will result such linear changes because much increased current will go heat instead torque Youd better measure current make such switch flight propeller will unload little decreasing amps drawn increasing run time slightly run motor short time let batteries rest will recover little also can increase total run time slightly current drawn battery will constant will diminish steadily rate dependent upon load condition battery will increase run time slightly What Im telling you may get little run time flight ground-test calculations showThe thing beware big increase run time happens means battery pack getting old may have shorted cell Youll find lot black powder coming out motor draw too much current may also see sparking commutator can interfere radio Expect brushes inside motor wear out rapidly exceed manufacturers recommended cell count Continued poge 93 Ni-Cd Battery Factors Chart Battery Capacity mAh 250 500 800900 1000 1200 1800 Factor amp-minutes bc amps 20-mm amps numbers correct no matter cells pack long cells connected series Parallel connection cells bad 48546072108 89101218 2427303654 Left Guillows kit Grumman Hellcat built Harry Oestreicher Jr uses geared pair six-watt HiLine motors instead twisted rubber strands 76 Model Aviation 4Above Russ Pribanic holds 60s-era Sidewinder owner Dave Baron Power Astro cobalt 40 using 21 cells Does about two rolls per second 90 mph flat Ave Torrance CA 90505 Tel [310] 378-5679 has dogfighters designed event 704 Gus currently offers bakers dozen designs including following Ki-61 Ki-100 P-40C P-38 Spitfire Zero FW-190 D Ta-152C Typhoon F8F MC-202 LA-S Soviet stable ever-present P-51D Bf-109 although Gus drew Bf-109 G model Gus admits Typhoon P-38 may able meet weight limitations 704 rules decided introduce sport modelers because liked designs Several other plans 1A2-scale have published some diehard contestants have drawn up own plans Id like close out first column thanking interest support askingeven beggingfor some black-and-white photographs sent inclusion future columns Please send home address given beginning column will try best return photos Goodbye now until next time Remember check 6 lying TodaylMyors Continued page 76 Battery design condition big variables particularly exceed bC discharge rate lOC means dumping charge rate [amps] 10 times one-hour capacity marked cell As example lOC l200-mAh pack 12 amp-hours 12 amps see chart electric helicopter dumps charge about 20C Its high intolerable other hand WACO setup dumps about 70C eats batteries on-board battery weight criterion both cases difference F3E has climbed out sight 30 seconds Im going using excessively high current very long during run However prefer see helicopter hover least five minutes Sport fliers stiff-wing airplanes use propellers drain on-board power pack rate 20C 30C expect battery pack last about year Some batteries tolerate high discharge rates better others battery has diameter similar its length usually tolerates high discharge rates better slender like pencil coin opposite discharging charging force batterys chemistry reverse itself takes patience general want charge power packs rate less 3C will get job done 20 minutes Thats showed chart One-hour rates better C/l0 charge necessary after four five flights rebalance cell capacities Hand Selected Fiberglass Cowl Complete Plans Parts Hand Cut Instruction Manual Photo Page Model Andy ot Australia order kits call 1-800-327-7198 catalog fine kits send $400 Idaho Residents Add 5% State Sales Tax BALSA WORKBOARD RESISTS WARPING DS TRUE LASTING 2 SIZES AVAI LB LEAdd $475 per board shipping & handling WB3O 36x14x 1AIDAO $2098 VVU 398 Visa MasterCard money order check PAUL K GUILLOW INC PO Box 229 Wakefield MA 01880 617-245-5255 April 1993 93 typical 45 will turn 13-6 over 10000 get 3 minutes oz & idle well below 2000 UNLEASH POWER WITHIN DIESELIZE its AWESOME Bigger Engine Wont Fit r er Props r Economy Noise lowplugs Lowldle Ask poor local dealer call complete catalom soad sell-addressed 75C stamped #10 eavelopo SS0U crodited 1st order DAVIS DIESEL DEVDOPMENT ox 141 erd CT 08490 871-1010 AND BOLD DeH Beaver 96 15 lbs
Edition: Model Aviation - 1993/04
Page Numbers: 75, 76, 93
George M Itlyers E LECTRICS past two years have very enthusiastic about electric-powered airplanes quiet peaceful should try Its dead electric motor controller succumbed crash damage STW high-rate 4 kHz soft-start on/off power controller BEC battery eliminator circuit designed handle 10 cells 25 amps F3E FAI class electric-powered sailplanes competition includes opto-isolation low-voltage high-temperature cutoff small light worked very well repair problem because made Germany Im trying take over Bob Kopskis world feel its right talk about new Made USA power controller bought WACO Electric sailplane see February 1993 column about model TREK POWER CONTROLLER about 1/2 X 1 x 1 /2 inches near future comparing sizes weights remember TREK requires separate RX battery Including four-cell 150-mAh pack makes equivalent numbers 1 x 1 X 31/2 inches weight 88 grams TREK Industries 75 Oregon Ave Medford NY 11763 manufacturer ESC-200-Optical speed controller available SR Batteries Tel 516 286-0079 Price $8995 convenient having both manufacturer retailer nearby Okay have new electric toy Im playing seems likely will have same questions proceed up learning curve ELECTRIC POWER ESTIMATES first thing confuses people terms used measure electricity look bag oranges can see big bag oranges look battery can see big cant see much charge contains So forced estimate charge based something charge wants get Out can measure pressure door Thats called voltage Unfortunately pressure doesnt change much charge runs out voltage isnt particularly good way estimate charge About can tell voltage battery fully charged Over 14 volts DC per Ni-Cd cell discharged Under 10 VDC per cell An expanded-scale voltmeter ESV lets guess whether battery half-charged less let charge run out can look through window wire count electrons pass point Well really flow charge through wire called amperes amps window called ammeter flow very small measure very small units called milliamps mAmilli means 1Aooo something electro-speak let charge run out measure time until something happens can say charge went past window X amps times Y minutes XY amp-minutes Since small batteries created power things use very little power run long time batteries can hold hand usually rated total bought TREK ESC-200-Optical speed controller replace dead STW TREK high-rate 25 kHz linear proportional control opto-isolator-but no BEC TREK draws 35 mA four- five-cell receiver RX pack designed control up 75 amps being drawn six through 18 Ni-Cd cells Its MOSFET ratings 120 amps continuous 300 amps surge MOSFETs special type transistor Metal-oxidesemiconductor field-effect transistor TREK controller smoothest linear power controller have ever used can turn prop slowly about revolution per second fast will go change rpm varies linearly off full motor stops whenever transmitter control signal lost no flyaways under power no crash-andburn prop stalls motor TREK ESC-200-Optical weighs 40 grams 15 oz connectors measures x 31/4 inches x inch lump MOSFETs stand up circuit board TREK Industries plans produce compact model April 1993 75 RC Flyizig Tody 70 Froehiich Farm Road Hicks viii NY 11801 Greg Pouloss Neptune has Astro geared 25 motor 18 Sanyo 1OOO-mAh SCR Ni-Cd cells weighs 625 pounds makes good water takeoffs landings charge capacity milliamp-hours mAh Amp-minutes convenient dimension people want use small batteries drive electric motors model airplanes want know capacity batteiy amp-hours divide its mAh rating 1000 want capacity ampminutes divide mAh 1000 multiply result 60 minutes per hour would lot easier power cells rated amp-minutes wouldnt Until paste field kit case forget divide 1000 multiply 60 Ive made up table conversion factors paste tool box too located elsewhere layout column Heres first secret formula 1 amp-minutes mAh Lets say want estimate long electric motor should run various battery packs Take motor put convenient test mount some kind legal use plane 1 Install prop and/or gearbox will use 2 Connect power pack via power controller 3 Measure amps drawn early part run dont have ammeter Ill show estimate amps 4 Measure run timethe length time power unit runs battery charge 5 Write down everything start six-cell 1 200-mAh battery because own measure current drawn motor/propeller combination youve got find 20 amps long should motor run Heres next secret formula 2 Run time minutes divided amps So scribble piece paper get 1200 x 06 mp-minutes power contained cell could look up chart So have fully charged pack current flowing out rate 20 amps can continue scribbling find 72 amp-minutes mps inutes run time sixcell battery pack measured run time stopwatch dont need ammeter Calculate average current drawn like 72 amp-minutes inutes mps What change propeller causes motor draw 12 amps scribbling gives new run time 72 ampminutes mps nutes What switch bigger 1800mAh pack scribbling 1800 x 06 amp-minutes 108 9 minutes What change number cells battery pack cells push current vice versa small increase say six seven cells current should increase about same amount new motor current will 12 x /6 mps new run time will 108 14 inutes opposite will happen reduce cell count five 12 x /6 mps 1530 255 15 108 108 minutes run time Making big changes such going seven 14 cells will result such linear changes because much increased current will go heat instead torque Youd better measure current make such switch flight propeller will unload little decreasing amps drawn increasing run time slightly run motor short time let batteries rest will recover little also can increase total run time slightly current drawn battery will constant will diminish steadily rate dependent upon load condition battery will increase run time slightly What Im telling you may get little run time flight ground-test calculations showThe thing beware big increase run time happens means battery pack getting old may have shorted cell Youll find lot black powder coming out motor draw too much current may also see sparking commutator can interfere radio Expect brushes inside motor wear out rapidly exceed manufacturers recommended cell count Continued poge 93 Ni-Cd Battery Factors Chart Battery Capacity mAh 250 500 800900 1000 1200 1800 Factor amp-minutes bc amps 20-mm amps numbers correct no matter cells pack long cells connected series Parallel connection cells bad 48546072108 89101218 2427303654 Left Guillows kit Grumman Hellcat built Harry Oestreicher Jr uses geared pair six-watt HiLine motors instead twisted rubber strands 76 Model Aviation 4Above Russ Pribanic holds 60s-era Sidewinder owner Dave Baron Power Astro cobalt 40 using 21 cells Does about two rolls per second 90 mph flat Ave Torrance CA 90505 Tel [310] 378-5679 has dogfighters designed event 704 Gus currently offers bakers dozen designs including following Ki-61 Ki-100 P-40C P-38 Spitfire Zero FW-190 D Ta-152C Typhoon F8F MC-202 LA-S Soviet stable ever-present P-51D Bf-109 although Gus drew Bf-109 G model Gus admits Typhoon P-38 may able meet weight limitations 704 rules decided introduce sport modelers because liked designs Several other plans 1A2-scale have published some diehard contestants have drawn up own plans Id like close out first column thanking interest support askingeven beggingfor some black-and-white photographs sent inclusion future columns Please send home address given beginning column will try best return photos Goodbye now until next time Remember check 6 lying TodaylMyors Continued page 76 Battery design condition big variables particularly exceed bC discharge rate lOC means dumping charge rate [amps] 10 times one-hour capacity marked cell As example lOC l200-mAh pack 12 amp-hours 12 amps see chart electric helicopter dumps charge about 20C Its high intolerable other hand WACO setup dumps about 70C eats batteries on-board battery weight criterion both cases difference F3E has climbed out sight 30 seconds Im going using excessively high current very long during run However prefer see helicopter hover least five minutes Sport fliers stiff-wing airplanes use propellers drain on-board power pack rate 20C 30C expect battery pack last about year Some batteries tolerate high discharge rates better others battery has diameter similar its length usually tolerates high discharge rates better slender like pencil coin opposite discharging charging force batterys chemistry reverse itself takes patience general want charge power packs rate less 3C will get job done 20 minutes Thats showed chart One-hour rates better C/l0 charge necessary after four five flights rebalance cell capacities Hand Selected Fiberglass Cowl Complete Plans Parts Hand Cut Instruction Manual Photo Page Model Andy ot Australia order kits call 1-800-327-7198 catalog fine kits send $400 Idaho Residents Add 5% State Sales Tax BALSA WORKBOARD RESISTS WARPING DS TRUE LASTING 2 SIZES AVAI LB LEAdd $475 per board shipping & handling WB3O 36x14x 1AIDAO $2098 VVU 398 Visa MasterCard money order check PAUL K GUILLOW INC PO Box 229 Wakefield MA 01880 617-245-5255 April 1993 93 typical 45 will turn 13-6 over 10000 get 3 minutes oz & idle well below 2000 UNLEASH POWER WITHIN DIESELIZE its AWESOME Bigger Engine Wont Fit r er Props r Economy Noise lowplugs Lowldle Ask poor local dealer call complete catalom soad sell-addressed 75C stamped #10 eavelopo SS0U crodited 1st order DAVIS DIESEL DEVDOPMENT ox 141 erd CT 08490 871-1010 AND BOLD DeH Beaver 96 15 lbs