Tom, I think the solution is a vertical slot on the Mafac mounting plates, which allows you to move the brakes up and down and increase the reach. You could probably drill a slot in your existing plates to increase the reach. Scott in St. Paul, MN
> Some of you may remember last winters questions
> concerning centerpull brakes. Well, the Hetchins
> frame has arrived and the mating with its new (old)
> Mafac Competiton centerpulls has occured. The frame
> in its former life had what the owner called a
> normal reach sidepull brake set that ignored the CP
> brazeons. The Competition set I had acquired also
> seemed to be of that persuasion, but after mounting
> I find the brake pads just barely meet the rims with
> the brake posts all the way at the very top of the
> adjusting slots.
>
> Andrew Moore forwarded a page from Sutherlands
> detailing various centerpull brake brands/models and
> gives distance from mounting bolt to top of slot,
> center of slot and bottom of slot. Its a big fat
> file and if anyone wants it Id be glad to email it
> to you.
>
> It reveals an interesting possible solution to my
> problem above. There were no less than 4 versions of
> Competition brake sets.
> Heres a mini chart:
>
> # top slot center slot
> bottom slot
> Cn0A 39 44
> 49
> Cn1A 44 49
> 54
> Cn2A 49 54
> 59
> Cn3A 51 58.5 66
>
> I apparently have the Cn2A with a center slot of
> 54mm. Would love to get my hands on a Cn1A,
> or.......... What Im curious about and wonder if
> anyone remembers - How were these different reaches
> accomplished. It would seem the arms could be longer
> or shorter or the mounting bracket could be taller
> or shorter or some combination. Anyone know?
>
> Thanks
> Tom Rawson
> Oakland, CA
>
>
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