I need to correct the posting I made about the Bionx kit a few weeks BH (before hacker). It turns out that the maximum speed feature can be disabled. As a matter of fact I was doing it. I was just too unfamiliar with the kit to perceive the difference. I figured that with speed limitation turned off I could use the throttle to go faster than 20 mph. With the throttle alone I can just barely get the speed over 20 mph whether the speed limiter is on or not. This makes sense given the size of the motor and the battery characteristics. As I have been riding the Bionx I have gradually stopped using a throttle and started using the automatic assist feature more. This is probably what the designers had in mind anyway. It just took me awhile to get used to it.
After getting used to it, however, I began to notice one annoying feature. The bike and I would peddle steadily up to 19 mph and then it was like I hit a wall. I would need to increase my effort many times just to get up to 21 or 22 mph. This was especially annoying if I was feeling particularly frisky or had a tail wind. It was like being in a car where the driver can't stop fiddling with the throttle. There was a constant acceleration and deceleration at the speed hovered right around 20 mph. After a surprising number of weeks of this I suddenly remembered the maximum speed disable feature. I tried it again, and voilà! Now I can peddle steadily up to 22 or 23 miles an hour, and probably faster if I really wanted to push it. This being snow and ice season pushing it is going to have to wait for a few months.
The instructions are:
Press and hold the mode and chrono buttons for about three seconds
The display should show four zeros. Use the a-key to change the first numeral to a 3.
Use the mode key to get to the next numeral.
Repeat until the code entered his 3773. At this point, the display should show Max alternating with Speed on the LCD. The number displayed should be 1. Use the g-key to change this to a zero. Use the mode key to get out of the menu. Your maximum speed problems should be a thing of the past.
I will post a more complete review of my Bionx kit in the near future.