Upgraded EV Voltmeter, July 4, 2021

So I didn’t really care for the rectangular container for the voltmeter & haven’t been able to find a round digital one of the size and type I want. So … what to do? Make your own case, came the reply from nowhere. So I did.

Started with a previous bad voltmeter, took the screws out, took the guts out, took a drill and a leatherman to the front of it after tracing the bottom of my voltmeter with a sharpie, and then installed. Note that a sharpie is not the best tool for marking on plexiglass.

basic finished product but not yet mounted
mounted to handlebar, basic finish

New EV voltmeter, June 21, 2021

So the original analog meter got stuck about 16 or so volts above actual (or above something) after the first test ride. Replacing it with this one, once I figure out how to mount it in a secure and stable way. Would also be nice if I could get consistent readings across multiple electric volt meters but there seems to be a consistent difference between 0.3 v and 0.7 volts.

Sprocket Reinstall, June 12, 2021

So I ended up ordering some more set screws and other pieces I thought I could use but ended up buying most of the pieces from Home Depot. End result? Used a double set screw for each location with locktite red, the 2nd screw to keep the first in place. Had to adjust the tire and take the chain off to work on it but that wasn’t too bad. Also added a collar lock tight against the sprocket to keep the sprocket from moving should the key find someway out again, which may be unlikely as I added an end cap to the shaft as it is a threaded 7/16-20 shaft. The concern with the shaft cap is that is clockwise to the view while the rotation is counterclockwise so it does have the potential to unscrew despite the additional locktite on it.

Was a bit surprised to find the key that fell out while riding sitting in the motor guard (put in to keep road items from bouncing up and hitting the bottom of the motor or sprocket).r
Re-installed key in keyway
Collar installed tight to sprocket
Shaft cap installed