So i finally got around to making a little chain slide from 1/8th inch thick 1/2 inch wide heavy weight plastic, and had a heck of a time trying to install with the chain in place. Since it was easier to take the chain off i replaced the 10 tooth sprocket (which is the cause of needing a chain slide in the first place) with a 16 tooth sprocket. The 14 tooth i have actually would not fit on the shaft as there seems to be some minute lip that I can feel with my finger but not see that keeps it the end of the shaft from going all the way through the bore.

The bad part is now i have a 2.5:1 sprocket ratio (rear to front) where I had a 4:1 sprocket ratio before. Without making adjustment to the throttle I note that with the 10 tooth sprocket i had better acceleration up the hill in front of my house and from a level standing stop. i can still get up to 50 mph easily but got there quicker before. Will look at the software config on the motor controller next as there are some adjustments i can make to call for more power on the throttle twist than the defaults I chose.

The interesting part is that I was expecting amp draw to go up and it actually went down. I was hitting about 150 amps last test and topped out around 100 amps with the 16 tooth sprocket during today’s ride.