Originally Posted by scarlson

Yeah these really don't have very good clearances with the 27" wheels they came with! But, I have done 700c and 650b to the mixte version I talked about earlier, and they are both good. The BB seemed pretty high so 650b didn't seem like a problem.

Now why stop at 38s and sidepulls? Gugificazione with cantis and a bit more aggressive indenting will get you to 42s and fenders, no problem. Could even rake up the fork a little to lower the trail. You'll have yourself a nice faux Herse!