I don't see peoples trouble with cotter cranks? I rode a set of middle of the road stronglights that were about 30/40years old with the right size pins in them. Did about 750miles in a month on them and they never gave any bother. Flexible as fuck compared to modern external BB cranks, but then thats like comparing a Lotus Exige with a 3wheel Morgan in a torsional stiffness test.
I don't see peoples trouble with cotter cranks? I rode a set of middle of the road stronglights that were about 30/40years old with the right size pins in them. Did about 750miles in a month on them and they never gave any bother. Flexible as fuck compared to modern external BB cranks, but then thats like comparing a Lotus Exige with a 3wheel Morgan in a torsional stiffness test.