Hi Michael, it will be very interesting to me what your experience will be. right now i am a bit put-off by the structural complexity of the suggestions i made for virtual pivots on my website. http://www.nupi.nl/index.php?id=04c30e76af allthough this solution is a lot like yours, it has an extra center pivot, like a "normal" python. recently i found stabiliser rods in automotive shops, usually mounted on the suspention of a car, http://city-racer.hypermart.net/stabilier%20rod.htm these could be interesting to use on bicycles your findings will also be interesting for the current pedalling/steering interferences (PSI) debate. (as your virtual pivot extends far in front of your hips) // Dirk Jan