[Madison]

I haven't touched timing belt since 2002 and had limited success at that, but I can see its appeal. The single largest issue I had to overcome in both 2001 and 2002 was preventing the belt from walking off the pulleys.

Out of curiousity, since it appears as if you're striving simply to replace roller chain with timing belt, have you considered taking things one step further and replacing the wheels with timing pulleys? It aggravates the problem mentioned above, but there are self-aligning belts and things that I've never been able to play with that may alleviate some of that concern. If there's a simple way of keeping your belts on, it'd seem a no-brainer to save even more weight by riding directly on your pulleys rather than attaching them to a wheel.