so I think sticking with 700's might be the move, that is if I'm OK with 32mm or thinner tires. Here's some info:

- with 700 rims the distance from the center of the hole for the brake in the rear to the middle of the rim is 63.5mm.
- with 700 rims the distance between the chain stays where the tire would be is about 38mm. How many mm's do they say you need on each side of the tire for enough clearance?
- the mafac's just barely are long enough for 700's, though its so close it's hard to tell until i had them completely set up and adjusted.

The mafac's arent getting used either way because now that I look at them again, they just don't look right with chrome lugs and a green frame anyway. So basically I'm sure I could get away with 700's with a 32c tire and weinmann or some other type of longish reach center pull. Anything with a 63.5mm reach.

I still don't know what the frame was designed for with those measurements. I'm guessing maybe 27 's since 63.5 seems like a longish reach.