Hi Bill,
I recall the emails, the controller can be made for the 72 V pack, but will not be as efficient as on a 48V pac.
You will get greater range but we have no way knowing how much, a good digital gauge will tell you a lot of info.
As to the ? of specs, it's not that I won't, just not in a public forum.
Hopefully we can get to meet after the summer.
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