Jack, THANK YOU. And if you watched Court's video you saw how it got up to 20mph in about 5 seconds, just like advertised, and you noticed that court didn't have to do ANY shifting. Noticed one poster on this thread said a hub would get to speed quicker than a mid drive, while at the same time said a mid drive would have more hill climbing power, does not make any sense, power is power.
And I'll stand by my statement that the mid drive will be more efficient over a wider speed range.
By the way I priced the rear freewheel (sprocket cluster) and you can get the exact same MF-TZ21 delivered for less than 20 US dollars here.
http://www.ebay.ca/itm/371205047556?_trksid=p2060353.m1438.l2649&ssPageName=STRK:MEBIDX:IT
So that is really a non issue for me, should I ever actually wear one out, in fact for the price I'm going to just get a spare to have on hand, a spare chain too maybe.
Rick.