Tuesday, June 30, 2009
Friday, June 5, 2009
I just had to do a quick connect with 12V to see the rear wheel turn under battery power. Most triumphant!
The battery's I used are some burned out SLA's from a UPS. I've been placing them on a charger to see if they can be recovered, but they wont hold a charge over 13.2V. Good enough for the demo and testing phase though.
Tuesday, June 2, 2009
The front sprocket and chain arrived from Grainger a few days ago, but the rear sprocket from Sprocket Specialist was taking it's sweet time. After finally arriving, I nearly choked at how big the sprocket was. Had I made an error calcualting the sprocket size? I estimated the 68 tooth sprocket at 13.75" diameter, but it looked like 16" to me. You know that saying "measure twice, cut once"? Well I'm famous for cutting twice, and sometimes more.
A tape measure told the truth: 13.875" (whew!). Still looks pretty big to me.
After putting together the hub and sprocket, I threw the rear wheel in place and cut the chain to length. Sprocket has a least 1/4" clearance from the swingarm, the chain fits and lines up just fine. Even the mislocated bolt pattern for the motor is not going to be a problem.
At this point, I'm feeling a little lucky and may go buy a few lottery tickets.