O Symmetric Users

Discuss light weight issues concerning road bikes & parts.
Machinenoise
Posts: 147
Joined: Wed Jun 22, 2011 9:39 pm

by Machinenoise

This year at the tour Or 2011 vuelta on the Angliru? :mrgreen:

The 42 inner is the same over the whole rotation as a 42 round, and "feels" very comparable. probably nearer 46 at the max and 38-39 at the deadspot. Moving to a slightly bigger cassette will minimise any difference you feel up hill.

However the ovalness does help keep fluidity and momentum climbing better than a round ring IMHO.

by Weenie


s4one
Posts: 55
Joined: Wed Dec 10, 2008 2:23 am

by s4one

If i install a q ring, it will one be the inner 39t. just want to test the waters

jo.k
Posts: 177
Joined: Fri Jan 09, 2009 11:39 pm
Location: Norway

by jo.k

So a 42T O.symmetric inner will feel comparable to a standard 42T inner? With Campags biggest 29T rear choice that will effectively give gearing equal to 39/27, which I for one find a tad on the heavy side for long sustained climbs of around 10%. Not that I climb those all the time, but being able to choose suitable gearing for those events is something I'd like to do. Hmm.

s4one
Posts: 55
Joined: Wed Dec 10, 2008 2:23 am

by s4one

Ill be using the 39t q ring with a 25t rear. Hopefully i feel a difference.

Machinenoise
Posts: 147
Joined: Wed Jun 22, 2011 9:39 pm

by Machinenoise

Yeh the osymetric 42 gives the same roll out as a round one. They do a 38-52 in 110bcd if thats any help.

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