Hey Ben, There are 50 pages on this thread - I only read through about the first, but wanted to say - way to go! Mine was converted by students - and I have only been working the later details so far. Electricfly -
MyElectricfly.com
Using a motor like I have - it is a GE Series DC rated 20.9 HP at 90V x 184 Amps, and on the highwya I am able to do about 65 mph (105 kmh) drawing 185 amps but my 12V Group 24's sag back to about 75V from a starting 100V.
The thing is - what I have recently learned - is keep it to the 25 Amp rating on 12V Bat's to keep them alive, and that means - it is realy limited to about 20 kph (This is with the 12V Trojan SCS-150 Lead Acid Floodies). Of course - I have also had enought experience to run the batteries dead a few times - no I don't mean dead, sorry - I mean SUPER DEAD, which of course probably took and extra 50 + cycles off their limited life.
I have added to the analog Voltmeter and Ammeters it came with - a PakTrakr display with a Woodward After Market Components Enhance Display and learned even more about the issues with 1 or 2 of the batteries going south before the rest of them!
Check out my web site and blog.
Robert