|Owner's Other EVs||RazEr REV2 |
|Location||Cambridge, Massachusetts US map|
|Vehicle||Sharper Image ElectricX2 |
Originally a small, kick-assist scooter. Not any more.
|Motor|| feral Chinese motor Brushless DC|
3 pound, 3.25" diameter model aircraft outrunner motor.
Tested and metered at 2100 watts
|Drivetrain||5mm GT timing belt drive, 3.75:1|
|Controller|| 100A HV Opto|
Common hobby brushless motor controller, rated to 44 volts, 100A
|Batteries||28 Sanyo N3000CR, 33.60 Volt, Nickel-Metal Hydride|
Batteries were found in the parts bin. Future upgrade path include 8Ah lithium polymer cells.
|System Voltage||33 Volts|
|Instrumentation||Astroflight Whattmeter R/C power analyzer|
Displays volts, amps, amp-hours, watts, etc.
|Top Speed||22 MPH (35 KPH)|
|Seating Capacity||1 adult|
|Curb Weight||22 Pounds (10 Kilograms)|
|Tires||5" kick scooter wheels, custom drive hub|
|Finally after a month of work it's done. About 3 pounds over the original design weight due to the large battery pack.|
Retired as of 12/2007, rebuilding with in-wheel brushless motors and lithium polymer batteries!