Mounting hall effect sensors on the DIY
OwnerAxel Borg
Location Sweden map
WebWebPage
Vehicle1989 Yamaha TZR
Light motorcycle conversion.
Motor Brushless DC
DIY Axial flux 3-phase DC, 20kW peak.
Step-by-step building
instruction book available at WebPage
Drivetrain14-45 sprocket chain drive.
ControllerKelly KBL 48601
Easy to use and to program
once you got it installed.
Lacks low rpm power.

2010-07
I have now changed from the Kelly to 7xHobby City 120A ESC (180A 30sec = 1260 A peak!)
Batteries11 Thunder Sky 90Ah, 3.20 Volt,
LiFePo4 3kWh battery pack.
System Voltage36 Volts
Charger Unknown Chinese
E-bay LiFePo charger, 42V 8A, seems to do the job alright. I have a couple of single cell LiFePo charges to balance cells if needed.
DC/DC Converter
Transelectric DC/DC converter
18-55V wide range input, 13.8V output.
InstrumentationCycle analyst, a truly great
little device!
Top Speed65 MPH (104 KPH)
AccelerationKelly: Moderate.
Good in the 40-80km/h range.

7x Hobbycity/Hobbywing 120A ESC:
Nice, 0-100km/h in 8-9sec, the batteries are now the limiting factor.
Videoclip 0-65mph 26kW(!) peak: WebPage
Range30 Miles (48 Kilometers)
25-30miles
40-50km 80% DOD.
Watt Hours/Mile90 Wh/Mile
With Kelly: 50-60Wh/km
When I ride the bike fairly gentle on a route with mixed speeds, 30-50-70 km/h, the cycle analysts calculate the energy consumption to 48Wh/km. Average speed on this specific run was 45km/h and max speed was 78km/h.
Riding the bike faster and more aggressive will result in a energy consumption in the 60Wh/km region. City driving stop-and-go, results in 51Wh/km with the Kelly, and 48Wh/km with the 7xESC setup in "Delta" and
45Wh/km with a motor winded "Star".
EV Miles
Current:446 Miles (717 Kilometers)
 
    As of 2/24/2012
Seating Capacity2 adults
Curb Weight310 Pounds (140 Kilograms)
140kg, 9kg over original stock weight.
TiresOriginal
Conversion Time1 Year, which includes testing and development of the electric motor.
2010-05, It is now registred and insured as a electric motorcycle.

2010-07
With the 7x120A setup, you have to keep an eye on the motor temperature. Better acceleration is great fun but it does heat up the motor considerably.

2010-10
Nothing new really, just enjoying my commute to work!
The hobby ESCs seams to hold up pretty well.

2011-09
Another wonderful "electric" season has now come to an end.

code by jerry