You will probably get about the same range, with a somewhat faster speed conferred by the higher voltage, the extra watt hours being <mostly> consumed by wind resistance.
Since I see you are tending to use the vehicle in "non-hybrid" mode. I'm more of an "I love pedalling" type so our watt-hours per mile patterns aren't very comparable. I like to go a bit slower and pedal all the time, which gives me awesome range with the 1400 watt hours of energy that I have, when running parallel packs. I'm still a bit surprised by the heating you noted. Anyway, I'm glad you are happy with the performance. I found that the Terracycle dual idler screwed right into the existing AB idler mount, and I upgraded my idler. Wasn't too impressed with the Actionbent one. I got the low end "Sport?" idler..
Last edited by chvid; 05-29-11 at 12:58 PM.