OwnerBrandon Bridges
Owner's Other EVs1980 Huffy Bay Pointe 3 Speed Cruiser
2004 Razor Ground Force
1976 Raleigh Grand Prix
2008 Schwinn S-400
1975 Raleigh Twenty
1994 Suzuki GN125
LocationShelby, North Carolina United States map
Email email image
Vehicle2005 Razor MX500
Bought with bad batteries at a thrift store for $50.
MotorUnite Motor MY1020 Permanent Magnet DC
500 watt 36 volt motor. Soon to be 750 watts for that little bit more for the hills.
DrivetrainChain drive to the rear sprocket
ControllerYi Yun YK42-3
In the picture a YK42-2 is sitting in the unused battery box to make sure the YK42-3 would fit.
Batteries3 CSB 7aH, 12.00 Volt, Lead-Acid, Flooded
Used UPS batteries bought for $3 each. Each holds at least 6aH confirmed, some more than 7aH.
System Voltage36 Volts
Charger Qui Li
Inefficient, but I'm too cheap to buy another one.
DC/DC Converter
I plan to buy a DC/DC converter in the future to power a headlight.
Top Speed18 MPH (28 KPH)
Acceleration0-18 in ~5 seconds
Range1 Miles ( 1 Kilometers)
215lbs in the foothills=poor range
Seating Capacity2 people on flat ground in an emergency
Curb Weight50 Pounds (22 Kilograms)
Conversion Cost~$100 so far
I bought this bike at a thrift store where I stop by every so often to buy electric scooters for a whopping $50. The batteries were bad but the bike itself is in excellent condition. The bike ran fine with the stock equipment but I wanted a full twist throttle and a true PWM controller, so I bought a Yi-Yun, which in my opinion are the best Chinese controllers you can buy. Hopefully it will have better throttle control and more power when I get done with it. I will be reverting back to 12aH batteries once I find some for cheap enough.

code by jerry