So it works. I think? None of that EV torque and zoom from the Tesla or even the Nissan Leaf, or before that as from the Tronbike Ninja 1000 Conversion. Just a little pull, constantly, that needs goading to get going. Sort of defines "assist", but its a honestly a little lame.
The Resurrection Process
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| The Starting Point, $300 from Craigslist - I recognized this as a pricey sexy ebike of the 2010's |
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| I hoped it was a fail in the Arduino controller, but this was sealed and proprietary... |
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| Digging Out the Original Battery from the Downtube... |
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| Removal of the Torque Sensing Niner Accentric Bottom Bracket was Required... |
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| More Square Tapered Bottom Bracket Shots... |
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| The Battery - Big Long Rod of 18650s - Turns Out it Was Dead... |
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| and if it was not dead, I killed it with curiosity (thats the BMS torn in half)... |
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| Stripping the Aluminum Reveals 18650s In A Complicated Pattern I did not want to try fixing and repacking into that downtube... |
SO I bought a Stylish, External Battery, and You Can Too:
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| The End Point - External Battery Hotwired Into Internal Wiring. Frame Drilled and Tapped to Hold the Cage... |
Strava Output:
For the 7.5 mile ride, averaged 8 mph around town. No sweating in jeans and a sweatshirt, but its freezing out today (California 45 degree sort of "freezing"). Trading back and forth with Zeb, his Meta Hardtail 29er provided a better ride with just barely more effort. Maybe the whole electric thing is to make up for heavy cheap bikes?
If you have Strava, you can explore further below:
So battery died/started dropping current at 48V!!? See my interim/working solution now at https://youtu.be/Us0RoBCdduo
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