New cassette, old deraileur

Kiblams
Kiblams Posts: 2,423
edited March 2009 in MTB workshop & tech
I have recently had to replace my rear wheel and take the leap from 7 speed freewheel to a freehub wheel, this is where it my set-up gets a little unusual. Due to a lack of money I am running my old 7 speed shifter with a new 9 speed cassette and the question is;

Am I at risk of damaging the chain/cassette/derailleur in this set-up? as the shifting seems to be OK across 8 of the gears with one being skipped in the center with the smallest not being used.

Thanks in advance for any advice.

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