AMuzi wrote:

Fichtel & Sachs Duomatic has a brake arm.
Torpedo Dreigang has a flatted axle with
no-turn washer.

Ha ha!

Torpedo 3 has no-turn washers in the
flat axle/washer sense but not with the little
hook that the Shimano Nexus 3 no-turn
washers have.

And Dreigang has a brake arm as well!

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underground experts united
http://user.it.uu.se/~embe8573