Current Specs. 48v Brushed 10in 1500w hub motor with 40ah SLA gets about 15 miles range.I am looking to convert it to brushless hub that can go 10-15mph faster and possibly 5-10 miles further. I do plan on doing the 60v mod, and that might be enough to satisfy her needs. But if not, I would love recommendations to convert to a brushless setup at 48 or 60v. Thanks.