Thread: Comparing strengths of alternative hinges, Qix, Visc, Birdy, IVE, Spin
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Old 12-23-17 | 05:34 PM
  #33  
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Originally Posted by dahoneezz
https://m.youtube.com/watch?v=y7NfpC7xnLM

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.
I think it resists torsional forces both at the hinge and at the clamp which too keeps the parts from rotating.
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