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14-04.-2004, 12:45 PM
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#1 |
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Guest
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How Is Brake Reach Measured?
All -
How is brake reach measured? I have an old steel frame, a Raliegh Olympian, I believe. It takes 27" wheels. I took it to a frambuilder to have the stamped rear dropouts removed & adjustable ones with an intergrated rear derailleur hanger installed. Now, however, the rear brakes that used to reach the rim on the 27" wheel work only with a 700C wheel! If I use a 27" wheel the brakes are too long. The brakes I am using here are Mafac Racer centerpulls. Part of this project was to use some 27" wheels I have on hand. I really don't want to have to buy new 700C wheels -- in fact, if it comes to that, I may scrap the whole project. I see that Tektro (courtesy of biketoolsetc: ) http://www.biketoolsetc.com/index.c...tem_id=TK-420AR (be careful, as the URL might wrap) has some short reach brakes. Will these work with my 27" wheels? (Keep in mind that I will have to use longer reach barkes on the front, as those dropouts have not been modified.) I'm sure I have left some crucial thing out... Thanks! Phil |
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14-04.-2004, 09:46 PM
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#2 |
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Guest
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Re: How Is Brake Reach Measured?
Center of mounting hole to center of the rim.
Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St. Boulder, CO, 80302 (303)440-3535 http://www.vecchios.com "Ruote convenzionali costruite eccezionalmente bene" |
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15-04.-2004, 05:31 AM
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#3 |
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Guest
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Re: How Is Brake Reach Measured?
Question Man <nowhere@nohow.com> wrote in message news:<00cp709hukgepicnkfvfqk7erhqbfu2pbi@4ax.com>...
> All - > > How is brake reach measured? > <snip> > The brakes I am using here are Mafac Racer centerpulls. > > Part of this project was to use some 27" wheels I have on hand. I > really don't want to have to buy new 700C wheels -- in fact, if it > comes to that, I may scrap the whole project. <snip> As Pete said, measure from the center of the brake hole to the center of the rim's braking surface. In millimeters, that's the brake caliper's reach. Be somewhat careful- your old Mafac centerpulls are very long reach compared to current brakes. Those Tektros may come out too *short*. You may have to consider "long reach" calipers: http://tinyurl.com/2md4x Jeff |
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