Originally Posted by
Jipe
Yes, both works, but the Brompton block is specified for a much higher load than the Rixen Kaul Klickfix, 10 vs. 7kg including the bag, so even with a lightweight 1kg bag, the Brompton block net load is 50% higher.
It sounds like all the mounts have some margin in terms of maximum weight. But all factors being equal, one would think that the one with the lower moment for a given cargo load would be stronger at the head tube, who knows about the bag/rack mount inself.
"All mounts are equal, but some are more equal than others."