OwnerCor van de Water
Owner's Other EVs1994 Chevrolet S10
2002 Toyota Prius
2004 Reva Maini
LocationMountain View, California US map
Web/EmailWebPage email image
VehicleSchwinn Sierra
MotorCurrie XYD-6B Permanent Magnet DC
24 Volt 450 Watt max 28 Amps, max. 2300 RPM
Drivetrainchain 25 pitch, 15 teeth motor sprocket, 54 wheel. 21 pedal power gears for Human/electric Hybrid operation.
ControllerCurrie
24 Volt 40 Amp
Batteries2, 12.00 Volt, Lead-Acid, AGM
12 Ah
System Voltage24 Volts
Charger
24V 1A brick
HeaterMotor gets hot
InstrumentationSOC estimation in throttle: full, 2/3, 1/3, empty
Top Speed18 MPH (28 KPH)
With pedaling
Accelerationverrry fast up to 10 MPH
Range25 Miles (40 Kilometers)
(sales spec)
Watt Hours/Mile10 Wh/Mile
EV Miles
Current:3,000 Miles (4,827 Kilometers)
 
    As of 4/28/2008
Seating Capacity1
Curb Weight45 Pounds (20 Kilograms)
(approximately)
Tires26 x 1.95
Conversion TimeBought it with this Currie conversion set installed
Conversion Cost$250 second-hand
Additional FeaturesRear-view mirror
seat post suspension
rack
Super low pedal gearing allows mud escape and mountain climbing.

More specs on following URL (towards bottom):
WebPage
Currie motor was not standard but replaced earlier motor that stopped working. When I opened that old motor, I knew what the problem was and saw the same issue on the new motor: the wires entered the motor in the front, catching rain water which could not exit and damaged motor and (built-in) controller. To prevent this with the new motor, I rotated it 1/3 so the wires are at the bottom. I need to add lights, fenders and good weather-protection for the controller. With the 24V battery, lights should not be a problem. I am thinking about upgrading the battery to larger capacity, though it is also good to get a workout and to keep pedaling - that is a free range extender!

code by jerry