That's a fascinating vid, Vi. Seems equally rideable right through that range of pivot angles. The mystery deepens! Well, it does for me anyway. Despite all the heavy technical prowess on tap amongst the listees, it still seems to me that a lot of the time, you just get a hunch, try it, and see. Thanks for all the input. RhG
Hi Dirk,Just for you, I swapped out the rear wheels to vary pivot angles, from 26, 16, 12, to 6in to get 60-52deg. Surprise, they are all ridable. In fact the smaller wheels feel more stable than 26in. Seat height may have something to do with it, and possibly the wheels themselves. Here is video of the test ride. <http://www.youtube.com/watch?v=5JUg0zIHSuM>http://www.youtube.com/watch?v=5JUg0zIHSuM
