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[email protected]> wrote in message
news:[email protected]...
> Frank DiDomenico writes:
>
> > With asymmetrical brake pads does the longer end of the pad extend toward the front or to the
> > rear of the bike? A diagram on page 32-16 of Barnett's Manual shows them extending to the front,
> > but I think this is wrong. Which way?
>
> The asymmetry is there to put the center of pressure in the middle of the pad, something
> symmetrical pads do not do as the toe-in of used pads proves. That toe-in is a good feature seems
> to have been missed by the asymmetry folks. If you look at the caliper arm as being torsionally
> flexible, it should be apparent that they twist from brake pad forces that are at about a 45
> degree angle through the center of the pad contact. Having a long tail moves that point to before
> the caliper arm and reduces its tendency to twist and wear the pad with toe-in.
>
> Use symmetrical pads for best results and when using asymmetrical pads, the long end goes to
> the rear.
>
> Jobst Brandt
[email protected] Palo Alto CA
IIRC, the Shimano V-brake manual says to set up their asym brake shoes flat against the rim. That
way you have more brake pad hitting the rim at the same time.
Someone actually have the Shimano manual?
Mike