Originally Posted by
tomtomtom123
I bought my Speed TR in Taiwan, and after 10 months the hinge no longer closed flat and would rock back and forth. The 2 sides are convex, curving away from each other. (Snip)
I recorded the movement in a video here:
https://www.youtube.com/watch?v=choJcvBszMQ
I was looking at this video ... you can see the wear pattern on the Brompton hinge. It seems that the contact is only at the hinge pin and at two corners opposite the hinge pin. So by design, it minimizes the problem of see sawing/convexing (minimal contact area)... but then it does not have the "surround lip" that is to strengthen for torsion.
