I have a old Marin Palisades Trail that I am turning into a SS comuter.
It has a cracked seat tube from the opening about 1cm down. I am not welding it and this is not a solution.
The frame has a built in seat clamp that I have had ground off. It has a 30.0 seat post. I bought a 30.0 non qr seat clamp but it doesn't fit the seat tube. What size will I need? 30.8?