Combination Torque Arm and Bob MountBattery Pack Showing Charging Ports
OwnerBarry Enright
Owner's Other EVSchwinn
LocationBeaufort , South Carolina US map
Email email image
Vehicle Turbo Lance
Electric Bicycle built from scratch
MotorCrystalyte 5303 Brushless DC
Hob motor built into 26" wheel
DrivetrainElectric hub motor
ControllerCrystalyte 72 volt, 45amp,
Batteries48 Headway 3.3v 10Ah each, 3.30 Volt, Lithium Iron Phosphate
System Voltage72 Volts
ChargerHyperion 1420i
500 Watt RC charger. Charges and balances the packs. Use a 450 Watt Meanwell power supply to power the charger.
HeaterNone
DC/DC ConverterErickkson
DC/DC runs running light and horn. 36v to 12v
InstrumentationCycle Analyst
Top Speed41 MPH (65 KPH)
AccelerationBrisk, moderate car speed acceleration up to 25 MPH
Range30 Miles (48 Kilometers)
30 miles at top speed, 40 miles at around 24mph, and 65 miles at bicycle speed.
Watt Hours/Mile40 Wh/Mile
20 to 40 Whr/miles depending on speed.
EV Miles
Current:300 Miles (482 Kilometers)
Seating Capacity1 adult
Curb Weight100 Pounds (45 Kilograms)
Total weight about 100 lbs. The batteries weight 40lbs and the motor weights about 24lbs.
Tires2.5" Maxxis Hook Worm.
Conversion TimeSpent about a year off and on. Most of the time was spent sourcing parts and building battery box's.
Conversion CostBest guess is $2,500+
Additional FeaturesBob trailer and mount.
Hydraulic disk brakes front and rear.
Camera/GPS mount.

Although it will not be economical, I plan to build a solar charging station in the near future just so I can say "It's powered by the Sun".
My design was focused more on speed and distance and not enough on handling. Turbo Lance has to much weight in the back which adversely affects handling. It's still a fun ride but not all I had hoped for.

code by jerry