Just an update as I did my first ride to work and back yesterday. Thanks to everyone who helped me with advise on building my e-bike.
1. It's freaking amazing, with a combination of pure joy and fear
2. On my way to work, with a light wind in my face, I used 8Ah out of the 20Ah in my battery (going at 25mph when not stopped at lights), on my way back, going a bit faster, I used 4.5Ah, but with a 15mph wind in my back
3. The one thing that scares me would be the front wheel / front arms breaking. Seeing that I have no extra weight there (batteries are in the triangle, and motor on the rear wheel), my main question is "can my front wheel handle 25 / 30 mph continuously ?"
4. My cycle analyst doesn't seem to be doing a good job at limiting amps (I tried setting it to 10A, then 30A, I see no difference, and my controllers seems to be putting about 32A max on the motor -- it's supposed to be a 40A controller, although CA reports max currents up to 40A...)
5. I've currently put the controller inside my battery box, but I'm wondering about heat / ventilation.
6. It's almost impossible to pedal at 22mph+ (I would have to pedal super fast to help the motor), so I may have to look into this ...
Took me 32 minutes door to door this morning (for 9.4 miles), if I can keep my commute around that time, that's perfect.
And finally, the best part for me is that my road follows the caltrain tracks, so I'm never more than a couple miles away from a train station in case something goes wrong ...