Get a frame originally made for 27" wheels and convert to 650. You should be able to put some big uns on there then. Really, though you're only gonna get so much weight savings on the frame. Putting some big a$$ tires on will negate the savings some. You'll need to weight weenie your components. Also, I believe the frame companies start beefing up the frames in the 58-60 range.
Last edited by seypat; 07-31-21 at 09:20 AM.