Chainline Measurement, Campagnolo

Paul Kopit said:

After a little personal experience and reading Sheldon Brown's webpage
<http://www.sheldonbrown.com/bbsize.html> that Shimano recommends that
from the centerline of the frame to the midpoint of the 2 chainrings
on a double, that the distance is 43.5 mm. or ~42mm to the teeth of
the smaller ring.

The difference between the two measurements doesn't look right. The
teeth on the two chainrings are more like 7mm or 8mm apart

Quoted message said:

Would the specified measurement be the same when using a Campagnolo
rear hub/cassette?

Campagnolo 10s cassette is ~2mm wider than Shimano 9s and 1.5mm wider
than Shimano 10s. So to centre the chainrings on a Campagnolo cassette
they will be ~1mm closer to the centreline of the frame.

Nick

paul-<< Shimano recommends that
from the centerline of the frame to the midpoint of the 2 chainrings
on a double, that the distance is 43.5 mm. or ~42mm to the teeth of
the smaller ring.

Would the specified measurement be the same when using a Campagnolo
rear hub/cassette? >><BR><BR>

43.5 and 45mm, double and triple, center of crank to center of BB..from
Campagnolo tech specs..

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