I've measured them, with a tape measure. And the TT measurements come up shorter than published, regardless of seat angle.
Your seat tube angle argument only works if you're comparing frames with the same head angle but different seat tube angles. The precursa has a steeper head angle than many other track frames.
I've measured them, with a tape measure. And the TT measurements come up shorter than published, regardless of seat angle.
Your seat tube angle argument only works if you're comparing frames with the same head angle but different seat tube angles. The precursa has a steeper head angle than many other track frames.