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Alright I'll take it to condor after work and see what they think. Ideally if there is no real advantage to R463 (prefer them over R353) I'll just stick with Tektro and keep it all matchy with a 90mm arm.
Is arm length related to cable pull?
Side note: the current £20 set up brakes far better than shop set up compression-less hope V twin that I had.
Disclaimer: I was fat then and a pro-buyer. Less of both now.
amey-
Is arm length related to cable pull?
It's all related to 'mechanical advantage'.
Read: http://sheldonbrown.com/cantilever-geometry.html
Then the article on direct pull/(full size) v-brakes: http://sheldonbrown.com/canti-direct.htmlShould cover enough for you to figure out how.
atk
List of "v brake" arm lengths for general reference, R353 appears to measure 87mm but that's from a reader... http://www.gravelbike.com/?p=3298