Originally Posted by ttakata73

I think if the seatpost covers the clamp area you would be fine. I doubt that this frame would have butted tubing so it might be fairly thick AL all the way down the seattube. Most of those types of racks are rated for 10kg which isn't much so supports to the axles would make good sense anyway. It would be nice to see your entire bike with the new rack. I dig the retro high bars.