After lurking here for several years I finally got myself an electric bike. I purchased from Lightfoot Cycles a Smoothie and had them install a 48 volt Bionx on it. The Smoothie is a long wheel base recumbent designed specifically for the Bionx. It is a discontinued model however I was able to talk Rod into building one for me. It has the battery out in front of the rider. The bike is the only LWB Recumbent I know of that will fit both my self at 5-10 and my girlfriend at 4-10.
I am pleasantly surprised at the Bionx. I find it very easy to comfortably cruise at 15 mph or above using level 2. If I want to exercise and push the bike I can hold a steady 20 mph on level 2. I played with the bike today for 20 miles. Climbing a very steep hill and trying different levels of assist and speeds. By the time I was done I had used 70% of the battery. I plan on doing some much longer rides using level 1 and slower speeds. I was fascinated by the way the Bionx worked. On level ground using a constant cadence and gear it seemed to not be using much energy. When I came to a hill without shifting gears I just pushed harder on the pedals and the Bionx kicked in with a higher level of assist.