|Owner's Other EVs||1974 Harley Davidson Aermacchi|
1994 Toyota Pickup
|Location||Brooklin, Maine US map|
|Vehicle||1976 Suzuki GT550 |
I broke a con rod on this normally bullet-proof bike and decided to convert it.
|Motor||D&D Motor Systems, Inc. ES-10E-33 Separately Excited DC|
6.7" Sepex Motor
|Drivetrain||D&D Sepex Motor with Sevcon controller. 14 X 65 teeth sprockets|
For 72 VDC nominal. 12KW output
The controller is set up for 130A max regen which is like a medium application of brakes. I used a PB-6 potbox; just opening the throttle a bit (to activate the microswitch) allows regen-free coasting.
|Batteries||24 Thunder Sky LFP-100AHA with yttrium, 3.30 Volt, Lithium Iron Phosphate|
24 100 AH cells in series...
|System Voltage||72 Volts|
This charger can work with a BMS.
|DC/DC Converter||Sevcon |
|Instrumentation||Stock speedo, Cycle Analyst|
|Top Speed||65 MPH (104 KPH)|
Function of power, gearing, aerodynamics and field current.
|Acceleration||Not bad - similar to stock motorcycle up to 60 mph.|
|Range||45 Miles (72 Kilometers)|
Range obviously depends how fast you go. I estimate 45 miles at 45 mph to 70% DOD, riding for "fun." At 30 mph this thing could go 70 miles at 70% DOD. Improved aerodynamics would make a measurable difference. It's basically a box going through the air now.
|Watt Hours/Mile||125 Wh/Mile |
Function of speed.
|Seating Capacity||1 adult|
|Curb Weight||400 Pounds (181 Kilograms)|
Slightly heavier than stock. Weight is aft a bit far but the bike handles well.
|Conversion Cost||~$5K w/o charger|
|I still have bodywork to do on this bike. I'm pursuing an aerodynamically efficient fairing of some sort plus something to help close up the back of the bike. It takes 5-6 KW at 45-50 MPH; reducing this by 30% would have a large impact on range at speed.|