Okay, so I am bawking at selling out, not willing to go cheaper to move Tronbike, and I keep improving the gauge software and on Sunday, installed the 13 tooth gear. I thought it was 12, but 13 is what I ordered, the torque calculation spreadsheet confirming the decision.
I learned about the magic of a tool called "gear puller" to get the 10tooth off the shaft, and had to install a link back into the #50 chain with my tiny handpress. I always thought bike chains were a pain, this was a whole new level.
The result is now Tronbilke hould go 57 mph now. I have only ridden around around the block in the dark with the new gear on - it certainly feels smoother and runs quieter. The gauge indicated a lot of amps and quite a bit of consumed power too for the mileage - 3300 - 2887 = 413 W-Hrs for about 2 miles, under 5 miles per KW-hr, much less than my average of 8. The motor might be working significantly harder going from a ratio of 7.1 to 5.46, so temperature might also need to be watched more closely.
The plan is to take it to a shop to check brakes and suspension before trying to break the 50 barrier, and maybe recruiting a better test pilot to do the deed.
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