Originally Posted by
bikemig
Sweet. Which model Trek is this? Looks like you topped out at 36mm. I thought that 38mm was sort of the gold standard for conversions since that gives you the same diameter as 700 x 19c? Although it's hard to imagine 2 mm making a big difference.
I especially like the way you have the zeal hp pump mounted. That can be an issue with older bikes that lack a pump peg. How did you macgyver that?
How fat a tire can you fit on a RB-1? I'm skeptical that you can get close to 38mm on a racing bike.
Sorry for the confusion. '79 Trek 710 has 38mm Loup Loup Pass (accurate claim) Compass tires. '91 RB-1 has 38mm Soma B-Line tires (38mm claimed, 36-ish actual). How it fits all depends on the shape of the chainstays. I could get 700c 28mm tires on it, but the chainstay geometry doesn't spread out very fast behind the BB.
For the pump, I found a frame clamp peg, cut it down to the diameter of the seat stay and installed it. The peg part is located at the bolt so it was not too hard to cut it down, drill a new hole and mount it. Getting the length correct is the hard part. A little short isn't terrible, just open it up. But too long and you can't just redrill, you just end up making the bolt hole bigger so you have to use a shim instead.
FWIW, I haven't ever experienced pedal strike, but I don't often power through tight, fast corners.