Originally Posted by
Classtime
17 or 19.5? And I wonder what the top tube measures CTC.
1989 Rockhopper Comp
Are you playing the "guess the size on eBay when the seller doesn't know how to measure a frame" game?
I would say 17 based on the head tube. Ca. 20 inch frames have a bit more space between the top and down tubes, in my experience.