Cog-wear gauge

Neacalban1 said:

Anyone ever seen one? I know how to measure a chain,either with a ruler, or a tool like Park's,
and chain-rings aren't too hard to eye-ball, but aside from skipping or grinding,how does one
gauge when to replace a cassette?

Put a piece of chain on the cog under tension, and observe how well (or not) the last link can be
seated. Look at the Rohloff tool for an idea
--
Marten

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Quoted message said:

Neacalban1 said:

Anyone ever seen one? I know how to measure a chain,either with a ruler, or a tool like Park's,
and chain-rings aren't too hard to eye-ball, but aside from skipping or grinding,how does one
gauge when to replace a cassette?

Put a piece of chain on the cog under tension, and observe how well (or not) the last link can be
seated. Look at the Rohloff tool for an idea

The Rolloff Cog gage only works on (I think) 26th & smaller cogs, regardless of what they say. It's
just not reliable on larger cogs. But as is pointed out above, lg. chain rings are easy to judge. I
think it works well as does their chain ware gauge. In fact I feel their chain gauge is better that
the Park. The Park is too easy to bend the pin & get inaccurate readings. The first Park I ever used
had this condition & indicated that all chains were worn out, evenwhen new.

say, if you're using power links for removable chain cleaning and discover chain skip thereafter try
putting the link back on exactly as it was when removed. Colored paper clips do the job with each
link on the bent clip with long side of the clip holding thew link half and the short side attaching
to the proper chain side!!!!. a thought that eases life's difficulties.