I have been busy, but I have added a few things to my EV. I know have a quiet vacuum pump from Audi which provides up to 28" Hg of vacuum and my brakes work a lot better now. I got the pump off eBay for a lot less than the noisy Thomas Pump I had been using.
I have been working on two rather stubborn batteries. I haven't been driving the EV as much as I should, and two batteries are performing a lot worse than they should be. I believe they are become stratified, so I am working on those batteries. I am breaking in the pack again slowly and charging the lower batteries with a power supply. I also am giving the entire pack a day or two on a float setting to get the acid moving around again.
I am thinking about upgrading my EV to 120 or 144 volts and a new chassis this summer, with lithium batteries possible. I am going through my budget and options now, but if I can't get these two stubborn batteries back up I am thinking about replacing them or doing the upgrade. This weekend is really nice, so I plan on working a lot on my EV in between getting ready for the end of the semester.