Originally Posted by
Schwinnsta
The long dimension 63.00 mm. Depth of flange ring support 11.11 MM. This is off my Zizzo with H&H for Birdy 3. I don't know what is in the pics with the squares. I don't have that. I had to shim a little bit due to slight diameter difference. I would think that the flanges could be rotated and the piece that holds the block could be rotated.,

Off topic but what pig nose adapter is that on your Zizzo? I have the Zizzo branded version on my Liberté and it has only 1 attachment point at the bottom of the head tube, limiting me to about 5# carrying limit. How much can you carry? Thanks.
Back to Birdy talk - I've always admired the look and engineering of those bikes and would love to try one someday...