Range: 25-30 miles depending on conditions
Top Speed: 45 MPH (though the front gear can be easily swapped out to go faster)
Weight: 480 lbs
Transmission: Direct drive 72 teeth sprocket in the rear and a 12 teeth pinion/gear on the motor
Charging Time: ~6 hours
Energy Requirement: 70 to 75 Watt-hrs/mile
Electricity Cost: 1.5 cents/mile
Batteries: 6 x 12 Volt Lead Acid (Sealed, AGM)
Voltage: 72 Volts
Motor Power: 7 kWatts Continuous (9 HP)
See this Excel spreadsheet for a bunch of interesting engineering calculations.
Check out the parts and cost list for more details.