Originally Posted by
Lilcphoto
If the home mechanic was looking to chance his cog or change his chainring, one must buy additional tools to change the cog (lockring remover, chain whip) VS the chainring which can be taken off with an Allen wrench... So if it is a one time one bike sort of thing, its actually relatively cheaper to change the chainring than it is to change the cog (assuming you find a good deal on a chainring).
Problem is, you need to change a large number of teeth on a chainring to affect a significant change in gearing. This often requires also changing the number of links in the chain, which requires having a chain tool. Also, the cost of your typical good quality chainring is sufficiently higher than a good cog to afford a cog and lockring tool, which everyone with a FG should own anyways. In addition, you usually need a tool to restrain the chainring nuts on the back of the crank spider as well as a hex (allen) wrench to remove / install the chainring bolts.
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Last edited by TejanoTrackie; 01-04-11 at 12:05 PM.