|Location||Lafayette, California US map|
|Web/Email||WebPage (not updated in quite some time)|
|Vehicle||2000 Montesa Cota 315R |
Competition trials bike, competed last three years.
|Motor||Perm Motor 132 Permanent Magnet DC|
Perm 132 with custom fiberglass shroud and cooling fan.
|Drivetrain||Constant mesh, jackshaft. 6.66 overall gear reduction. Top speed ~28 mph|
|Batteries||A123 Systems 100 M1 cells per pack, 72.00 Volt, Lithium-Ion|
Custom 66V 11Ah battery packs
|System Voltage||72 Volts|
Using 72Vdc power supply, 13A. Every 5th charge or so I balance charge each sub-string using CellPro 10s.
|DC/DC Converter|| |
72 to 24VDC for cooling fan.
|Instrumentation||Drain Brain, now Cycle Analyst|
|Top Speed||28 MPH (45 KPH)|
For trials riding, typically cruise the loop between 15-20 mph, in sections anywhere from 0 to 15 mph, typically between 3-6 mph.
|Acceleration||Haven't timed it, but you cannot keep the front wheel on the ground in full power with fast throttle application.|
|Range||2 Miles ( 3 Kilometers)|
Highly dependent on terrain and style of riding. During a trials I typically run at an average of 20A, so good for ~30 minutes of actual riding.
|Watt Hours/Mile||125 Wh/Mile |
On average. In very steep terrain consumes 5 times the power.
|Seating Capacity||No seat, it is a trials bike.|
|Curb Weight||175 Pounds (79 Kilograms)|
|Conversion Time||6 months for initial test mule. Continuous improvement ever since.|
|Conversion Cost||Around $8k for everything except batteries. Around $10K in battery pack development.|
|Additional Features||Power select switch, custom frame to mount the battery lower.|
Future plans: Battery balance board for battery packs,
perhaps new pack using a different chemistry with triple the power density, clutch. Perhaps a second conversion.
|1 first and 2 second places in last three seasons of Saturday Vintage Beginner Trials on the 2 line.|
1 first and 1 second place in last two years of Sunday Class A Trials on the Sportsman line.