Modified Razor MX500 48v

Описание: This is a razor MX500 with a 48 volt mod, a 750 watt motor, and a custom 96 tooth rear sprocket (also obviously a 48 volt motor controller and 48 volt charger as well).

Performance results: The larger rear sprocket gives about 20% more torque (and a resulting ~20% drop in speed) over the stock 80 tooth sprocket; which is much better for acceleration/hill climbing. Speed results are as follows (for the 48 volt mod and 96 tooth sprocket):
With 180lb adult on it, performance = ~ 23 mph on level pavement (25 mph with the stock 80 tooth rear sprocket). However hill climbing and acceleration are better with the 96 tooth sprocket.
Stock/original (36 volts with stock sprocket) was about ~ 17 mph on level pavement.
I would guess these numbers would be just a bit higher for a kid (i.e. lighter rider...as shown in video).