Well, I ended up with 132 of the same type of cell, all of which passed testing! The best 128 will get used in the new battery.
I finally took some actual measurements to see what kind of space I've got available in the triangular space in the middle of the bike. Since I've changed my plans, as well as the cells I'm using, I want to put the battery in the triangular section. I got lengths and angles, and It looks like I can make the battery fit.
Here's the new idea as to how the components will go in the bike:
I spent quite a while thinking of exactly how I want to wire things up. I want to use a PWM controller with a remote Potentiometer to control the current to the motor. I also want to use a momentary on switch to turn the motor on and off as I ride. Rather than routing the battery power to the handlebar and then to the motor, I plan to use a relay so I can put little wires to the on/off switch, and thick short wires from the battery to the motor.
Anyway, a diagram will probably make more sense than me writing about it:
Each cell will have a fuse, and the battery willhave a fuse. I'll also be using a BMS. Not sure if the motor really needs it's own on/off switch, but I think I want to put a toggle switch somewhere.
I also made a lot of progress on the motor today. Maybe I'll make a video of it. More on that later...