Hello,

I have a 24" 1971 Schwinn Super Sport that I was looking to upgrade. But, I was also tossing up the idea of buying a Surly Cross Check Frame, or an All-City Space Horse Frame. I like the Schwinn due to the fact that it is old, and would like to see how long it will last. Just wondering if anyone knew if frame geometry is significantly different where it wouldn't be worth upgrading/modifying the super sport.

Thanks in advance for your advice