Paul Master's 2000 Montesa Cota 315R

Owner	Paul Master
Location	Lafayette, California United States ^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
Controller	Alltrax 7234 Custom map
Batteries	A123 Systems 100 M1 cells per pack, 72.00 Volt, Lithium-Ion Custom 66V 11Ah battery packs
System Voltage	72 Volts
Charger	Using 72Vdc power supply, 13A. Every 5th charge or so I balance charge each sub-string using CellPro 10s.
Heater	None
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)
Tires	Trials tires
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.

code by jerry

2000 Montesa Cota 315R“ecotrials etb Electric Trials Bike”

2000 Montesa Cota 315R
“ecotrials etb Electric Trials Bike”