finally hit 1000 miles on the beast we bought with the stimulus money. we get from 10 to 30 miles a day on it. since it has standard Bosch batteries they can be exchanged with my commuter bike. my wife is blind and loves to ride with me for some reason. we do a little off road but the trails need to be hard packed and sharp doglegs means walking around them. spent a lot of time getting it setup for her as she had no clue what she needed and changing the bike to fit us all new bars all the gearing was changed bu the front chainring. we wanted better climbing and the nI put a cadence sensor on both cranks we found she was 10 rpms after then me so it meant more gearing change. and How to deal with the timing change if out dos not fit. Hey tandems have a elliptical bb that you can rotate how cool.