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ewalker [2009/01/13 19:58]
gregg created
ewalker [2014/05/16 12:35] (current)
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 ====== Overview ====== ====== Overview ======
-{{:​img_4744.jpg }} +{{:​img_0143.jpg?​150 }}{{ :​img_4744.jpg}} 
-I took a [[http://​www.sidewalkerusa.com/​old/​model_micro.htm|Sidewalker Micro]], added AirFree ​tires, and a brushless outrunner motor...and in doing so, turned this adult-sized kick-scooter into a viable primary vehicle for quickly zipping around short distances.+eWalker: **E**lectric Side**walker** Scooter 
 + 
 +I took a [[http://​www.sidewalkerusa.com/​old/​model_micro.htm|Sidewalker Micro]], added airless ​tires, and a brushless outrunner motor...and in doing so, turned this adult-sized kick-scooter into a viable primary vehicle for quickly zipping around short distances. 
  
 ===== Power Assist Highlights ===== ===== Power Assist Highlights =====
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 ^  GOAL  ^STATUS^ ^  GOAL  ^STATUS^
-|  Sustain 20MPH on flats|designing ​+|  Sustain 20MPH on flats|testing ​
-|  Sustain 10MPH on 4% inclines|designing ​+|  Sustain 10MPH on 4% inclines|testing ​
-|  Under 20lbs total weight|met +|  Under 20lbs total weight|Final weight: 22lbs 
-|  Travel 2+ miles per charge|designing ​|+|  Travel 2+ miles per charge|testing ​|
  
 ====== Ride Highlights ====== ====== Ride Highlights ======
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 | Battery Connectors|Deans UltraPlugs|$5/​pair|These can handle upwards of 200A at 50V, with ZERO resistive losses. They'​re also relatively cheap, and idiot-proof to connect - what could go wrong 8-)| | Battery Connectors|Deans UltraPlugs|$5/​pair|These can handle upwards of 200A at 50V, with ZERO resistive losses. They'​re also relatively cheap, and idiot-proof to connect - what could go wrong 8-)|
 | Motor Connectors|4mm female bullet connector|$1/​each|El-cheapo 4mm bullet connectors. The motor came with male connectors already soldered on, and I was simply too lazy (and cheap) to change anything out. They'​re working...we'​ll see for how long.| | Motor Connectors|4mm female bullet connector|$1/​each|El-cheapo 4mm bullet connectors. The motor came with male connectors already soldered on, and I was simply too lazy (and cheap) to change anything out. They'​re working...we'​ll see for how long.|
-| Motor Housing|Matt'​s [[http://​www.wisil.recumbents.com/​wisil/​shumaker/​edrive.htm|eDrive]] |$200?|Should be in the mail "​soon"​:-)+| Motor Housing|Matt'​s [[http://​www.wisil.recumbents.com/​wisil/​shumaker/​edrive.htm|eDrive]] |$230|beautiful piece of work...and fits VERY well!| 
-| Motor Mount |||Most likely just some angle-bar...I need Matt's mount in-hand first+| Motor Mount |||angle-bar...cut & drilled to fit
-| ESC Housing|NEMA 3/4" conduit connector|$14.99|Just standard NEMA-compliant 3/4" conduit connector.|+| ESC Housing|||Still testing ​few ideas.|
 | 10 gauge wire|Deans Wet Noodle|$5|A single foot of this wire cost $5...though it's 10-gauge wire that's as flexible as a wet noodle. I'm using it between various connections.| | 10 gauge wire|Deans Wet Noodle|$5|A single foot of this wire cost $5...though it's 10-gauge wire that's as flexible as a wet noodle. I'm using it between various connections.|
  
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 ===== Motor Mount ===== ===== Motor Mount =====
  
-===== Motor Pulley Discussion =====+{{  :​img_0142.jpg}} 
 + 
 +===== Pulley Discussion ===== 
 + 
 +^ Stage ^ Ratio ^ Details ^  
 +| Motor/belt reduction | 5.45:1 | 11-tooth HTD --> 60-tooth HTD |  
 +| Chain/wheel reduction | 2.6:1 | 25-tooth #25 chain sprocket --> 65-tooth | 
 +| Chain/wheel reduction | 3.25:1 | 20-tooth #25 chain sprocket --> 65-tooth | 
 +| Chain/wheel reduction | 4.33:1 | 15-tooth #25 chain sprocket --> 65-tooth | 
 + 
 +At 8,000 RPM, the following top-speeds are possible (12.5" tire = 34.5" rollout): 
 +^ Belt Ratio ^ Chain Ratio ^ Final Ratio ^ Output RPM ^ Top Ground Speed ^ 
 +| 5.45:1 | 2.6:1 | 14.7:1 | 564.57 RPM | 18.45 MPH | 
 +| 5.45:1 | 3.25:1 | 17.7125:1 | 451.66 RPM | 14.756 MPH | 
 +| 5.45:1 | 4.33:1 | 23.599:1 | 338.997 RPM | 11.08 MPH |
  
-Currently I'm planning to use an 11-tooth HTD pulley, as the wheel itself has the freewheel setup I'd need. 
  
 ===== Engineering Discussions ===== ===== Engineering Discussions =====
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 http://​www.electricvehiclesusa.com/​product_p/​th-bnl-103.htm http://​www.electricvehiclesusa.com/​product_p/​th-bnl-103.htm
 http://​www.eagletreesystems.com/​MicroPower/​micro.htm http://​www.eagletreesystems.com/​MicroPower/​micro.htm
- 
-====== GTD ====== 
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-[#] [@context] [p:project] [d:​yyyy-mm-dd|mm-dd|dd] [w:dd] 
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-</​gtd>​ 
  
ewalker.1231905537.txt.gz · Last modified: 2014/05/16 12:35 (external edit)
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