Originally Posted by
jonmanjiro
How does one tell the difference between a Mk2 vs Mk3 monocoque frame? Is there a telltale indicator to look for?
There are a lot of subtle differences. The Mk3 contains lots more hydroforming of the tubes. The most obvious for me are the thinner rear swing arms with a bulge for cable routing at the top. Lots of subtle work around the front QR mount too.
Mk2
https://en.wikipedia.org/wiki/Birdy_...ller_Birdy.jpg
Mk3
https://static.wixstatic.com/media/7ad068_7049cb0ce1f24eebae8c84667e22a518.jpg/v1/fill/w_740,h_641,al_c,q_90,usm_0.66_1.00_0.01/7ad068_7049cb0ce1f24eebae8c84667e22a518.webp