I have an old 56cm dave scott ironman expert, I think 1987 or 1988, which I have just recently started riding again after about ten years off any bike. I use it mostly as a daily commuter. My commute is about 7 miles over pretty good roads, but traffic is heavy. There is a trail/path that if I could use, would bypass the worst of the traffic. It's not an extremely rough trail, but after trying it once with my 700c 25 tires, I realized that it's just too rough to do 5 miles twice a day on that trail with my current setup. I'd rather brave the traffic. I also want to be able to put on fenders to be able to ride in poor weather as well, but the dave scott just doesn't have clearance for fenders, at least not with the 25mm ties and the 105 brakes.
So I have been considering a 700c to 650b conversion, to be able to put slightly bigger tires on, and to be able to get clearance for fenders. I'm not looking to put on anything super fat, just something with a little more volume. Probably not bigger than 32-35. From what I've read, it seems like Japanese road bikes from the 80s are generally good candidates for this conversion, but I haven't been able to find a success story with anyone using a dave scott model in particular.
Does anyone know of a successful 650b conversion using a centurion dave scott? Is this a good candidate for this conversion?
Right now the bike has shimano 105 brakes. Will any long reach brake work? Any recommendations?
I'm assuming that the current 165 cranks would be too long after the conversion. Is that correct?
I plan to get the frame powdercoated sometime this summer because the paint is pretty chipped in places and starting to rust. Would it be worth it to get a local shop to add braze-ons for racks and fenders before I send it to the powdercoater, since I'm planning to do the powdercoating anyway, or is that just investing too much in this frame, and would I be better off just getting a new bike?