mechanical advantage - brake levers

Charles Beristain said:

Does a campy 10 brake lever have a higher mechanical advantage than
a XTR MTB V brake lever? And can the V brake lever provide enough
force to be used in conjuction with a campy 20 brake caliper? May
sound strange but I'd like to try out that setup but don't want to
find out when it is too late that the brakes don't work.

You can get the mechanical advantage of any brake lever if you compare
the length of the lever from its pivot to the crook and divide that by
the length from the pivot to the cable attachment. The levers that I
have measured are all 4:1 from ancient times to the present. I only
looked at mainstream manufacturers.

Jobst Brandt
[email hidden]

Quoted message said:

Charles Beristain said:

Does a campy 10 brake lever have a higher mechanical advantage than
a XTR MTB V brake lever? And can the V brake lever provide enough
force to be used in conjuction with a campy 20 brake caliper? May
sound strange but I'd like to try out that setup but don't want to
find out when it is too late that the brakes don't work.

You can get the mechanical advantage of any brake lever if you compare
the length of the lever from its pivot to the crook and divide that by
the length from the pivot to the cable attachment. The levers that I
have measured are all 4:1 from ancient times to the present. I only
looked at mainstream manufacturers.

Jobst Brandt
[email hidden]

shimano is pretty main stream. their xt m739 levers are varaible
between 3.1 & 2.3. an xt[r] lever with these ratios would therefore be
inapproprate for the o.p.'s intended use.

Charles Beristain said:

Does a campy 10 brake lever have a higher mechanical advantage than a
XTR MTB V brake lever?

yes. campy 10 is 4:1, but xt[r] is between 3.1 & 2.3 to 1.

Quoted message said:

And can the V brake lever provide enough force
to be used in conjuction with a campy 20 brake caliper?

no. i've tried it. believe me, even with maximum ratio available on
the shimano mtb lever, they suck really bad. old style cantiler levers
might work, if you can get some of quality. most were pretty cheezy.

Quoted message said:

May sound strange but I'd like to try out that setup but don't want to
find out when it is too late that the brakes don't work. :-(

thanks

charlieb in ct.

Bummer ... that is what I suspected ... guess that is the end of that
idea.

thanks.. appreciate the inputs.

charlieb in ct.

charlie-<< Does a campy 10 brake lever have a higher mechanical advantage than
a
XTR MTB V brake lever? >><BR><BR>

Probably can use a XTR lever with a DP caliper but not the ERGO with a V brake
w/o an adapter.

Peter Chisholm
Vecchio's Bicicletteria
1833 Pearl St.
Boulder, CO, 80302
(303)440-3535
http://www.vecchios.com
"Ruote convenzionali costruite eccezionalmente bene"