V1.2 Launch Tomorrow!

Lots of progress:

• 5 batteries now, full designed capacity. Next stop, panniers!
  
• 5 chargers, re-organized and bundled vertically.
• 12 conductor connector between bike and charger, allowing chargers to be removable as an option (allowing 5 other 12 volt supplies as an option - solar?).
• Cleaned up wiring - nicer plugs.
• Increased size of pre-charge resistor to 750 Ohm, 10 Watt for 60 volts.
  
• Upgraded DC-DC converter - well, not quite, smoked it:

The DC-DC converter bums me out. I took out the old Quda converter, confirmed 63.8 volts on the meter, wired in the Vicor, and flipped the switch for testing and got a nasty POP and smoke. Flipped the switch off, investigating it looks like the ballast portion cracked. My fuse failed to blow first, which is a bit scary, and the wires to the Vicor did look thin.

The GOOD news is that with the QUDA out of the bike, I could read the back, where beyond the Chinese text it said DC 20V-60V. Moving the Vicor aside, I wired up the QUDA and checked the voltage, 11.89.

Despite the desire to run isolated DC-DC, I put the QUDA back in and finished up the wiring. A little motor test at 1 am confirmed it all working, its time for some fairings and some riding! And maybe some smaller fuses - 7 amp 250 V might be too steep.

I also got the 13 tooth gear in the mail. That will be V 1.2.1+

TODO for V1.2.1

• Serial Gas Gauge please?
• Fusing on the post DC-DC converter side (12 volt side), find a 7amp 60volt for the high side. Amps are key versus voltage, so maybe it was a broken device?
  
• 13 tooth gearing - ideally we have the gauge in place to keep an eye on the amps.