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  1. #1
    mtbr member
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    Pakr CC-03 chain wear tester V's Prolink Chain tester

    Hi,

    I used to wait until things skipped and then replaced chain, cluster and chain rings however then I bought a Prolink chain tester and decided to change the chain when it says 100% worn. So far this year I have gone though 6 chains as the tester says they are worn.

    I just tried my tester on someone elses bike and it showed 100% worn but when he tried his Park tool it didn't even allow the 75% worn end to fit in.

    So the question is which is more accurate? Is the prolink tester reading too high ,aking me change chains much too often or the parktool too low so he might have the issue of skipping when he tried to replace just the chain.

    All I know is I used to only have to replace my chain, cluster and chain rings about every 1.5 years so replacing the chain every two months based on the prolink tester is actually going to cost me more than not bothering to replace anything until it skips.

  2. #2
    mtbr member
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    I always order a new chain once the 0.75 goes through and fit as soon as the 1.0 goes through.I use a park chain checker.I seem to get about 3 chains to 1 cassette,1 ring.

    Havent seen or used a prolink so cannot comment on it.

  3. #3
    I am a pathetic rider...
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    I have no real hard data to back this up, but I always trust park tool over anything else, there stuff seems to be always just top notch albeit a little overpriced at times.
    Save the Earth, Ride a Cyclist

  4. #4
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    Reputation: Bikinfoolferlife's Avatar
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    12,379
    Best to just use a 12 inch ruler, the longer the measure the more accurate it will be. You could also just check your quickie tool against a ruler to see how accurate it is. From our dear departed pal Sheldon Brown:

    The standard way to measure chain wear is with a ruler or steel tape measure. This can be done without removing the chain from the bicycle. The normal technique is to measure a one-foot length, placing an inch mark of the ruler exactly in the middle of one rivet, then looking at the corresponding rivet 12 complete links away. On a new, unworn chain, this rivet will also line up exactly with an inch mark. With a worn chain, the rivet will be past the inch mark.

    This gives a direct measurement of the wear to the chain, and an indirect measurement of the wear to the sprockets:

    * If the rivet is less than 1/16" past the mark, all is well.

    * If the rivet is 1/16" past the mark, you should replace the chain, but the sprockets are probably undamaged.

    * If the rivet is 1/8" past the mark, you have left it too long, and the sprockets (at least the favorite ones) will be too badly worn. If you replace a chain at the 1/8" point, without replacing the sprockets, it may run OK and not skip, but the worn sprockets will cause the new chain to wear much faster than it should, until it catches up with the wear state of the sprockets.

    * If the rivet is past the 1/8" mark, a new chain will almost certainly skip on the worn sprockets, especially the smaller ones.
    "...the people get the government they deserve..."
    suum quique

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