Version 1.0Original tracksFrameBatteryMotor controlLoaded outUpdated frameNew motor controllers
Ownercharlesg
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LocationCambridge, Massachusetts US map
Web/EmailWebPage email image
Vehicle Craftsman
Once upon a free snowblower....
Motor CIM Permanent Magnet DC
Four 350W robot drive motors
DrivetrainIndependent dual motor skid-steer
Controller
Custom 36v 40A "RageBridge" dual H-bridges
Batteries72 A123 Systems 26650, 3.20 Volt, Lithium Iron Phosphate
System Voltage19 Volts
Top Speed15 MPH (24 KPH)
Range8 Miles (12 Kilometers)
Seating CapacityAs many as will fit on a skateboard
Curb Weight60 Pounds (27 Kilograms)
TiresWhat?!
Conversion Cost700 USD if all parts bought new
Version 0.9 uses PMDC motor with a custom motor controller, and is controlled using a handheld radio.

Version 1.0 added forward-backward weight shifting throttle control using load cell sensors

Version 2.0 uses 4 360W PMDC motors heavily geared for higher torque and returned to handheld radio control.

code by jerry