Mechanics and Fixing Any Questions Answered

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JohnnyOnions

Question to those running front mech made in 21st century…and please no answers ‘ 1 x’

Purchased a larger cassette because I am getting older , up to 36 from 28.
However when in big big combo, the chain rubs on the front mech, but not sides , but the top because of chain height angle to big ring. If I move mech up to clear this it is so high that shifting is crap. Mech is old campag veloce friction shift, that until now has been flawless and buttery smooth.

In the new world of big cassettes and grx etc, does thus still happen? Running 46/30, and 11 36, but was 11 28.

Any help appreciated, except 1 x !

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hippy in reply to @JohnnyOnions

I run 46/30 with a 40T or 42T cassette. I use Shimano Di2 though. shrugs

I don't understand how it's "rubbing on the top" but moving up the derailer isn't the solution. You only need it to -just- clear the chain, like 1mm gap under the cage to the teeth.

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JohnnyOnions in reply to @hippy

Have to move so high that it just will not shift even being friction and just sending it.

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