Thanks guys! I'll try to post up some build pics when I have a few mins.
For the settings you can start by setting the sempu and then change the type to custom trq, this will get you set as 24 poles, 2 wire, reverse polarity. Currently I have 15.0 Nm/V set, I hung an 8 kilo vise on the crank and after some questionable calculations ended up with that, it seems reasonable but I thought it would be higher. Maybe the 34 tooth chainring is at play here. Planning to hang a heavier dumbbell on it and see if it results in a higher number. Zero torque is at .95v, pas mode torque of course, start level 5 watts, scale factor 4.0 w/hw, pas asst avg is 12 poles. Start/stop at defaults.
Also I have a digital aux that is set for five levels, at the highest setting pedaling pretty hard uphill I can get around 600 watts from the motor which seems safe. The ultimate goal is to get a bit more speed for a given effort, without reducing the effort. Plain cadence doesn't really do this since the more you spin, the insanely faster you go. As a go cart it rocks but for getting exercise not so much. It made me wonder if it would actually be a great option in the CA to have a plain cadence mode where it reversed it's output so that it gave more assist at lower cadence and tapered it off as cadence increased. Not sure if that would really work.
Edit, hung a 40lb or approx 18kg dumbbell on the crank arm, cranks are 165mm. If I'm doing this right, I get 18kg * 0.165m = 2.97kg-m, and 2.97kg-m * 9.8 = 29Nm. The CA is reading 3.2V, so the difference from rest is 3.2v - 0.95v = 2.25v. Then 29Nm / 2.25v = 12,88. I got right at 13 Nm/v using the lighter weight as well, and I just entered 15 since it seemed low based on what I've read, but again it's a 34 tooth chainring so that has to play into it I think. Am I doing that correctly? Oh also it's CA 3.1 b21.