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Old 04-26-11, 12:29 PM   #1
kcash
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Shimano 105 cassette installation question

Hey all, longtime lurker that just got around to building a new bike.

I'm using a 105 cassette and 105 hub, I put the cassette on with the correct spacers and in the correct order, greased up the threads on the lockring and started tightening it by hand. When I started tightening it using the cassette tool and a torque wrench, it would "crack" every so often and I would lose torque (a similar feeling to when you're loosening a bolt and it finally gives way). I did finally get it up to the appropriate torque, but it was kind of disconcerting especially since I was sure that everything was set. It seems to be all right now, but it makes a sort of low rubbing noise when spinning it counterclockwise. Pretty sure its not rubbing against the spokes.

I've replaced a few cassettes before and never had had an experience like this, so I just wanted to make sure everything was okay.
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Old 04-26-11, 12:31 PM   #2
Al1943
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Congratulations, you're done, normal procedure. Go ride it!

edit: You said you have the correct spacers, if the cassette has 10 cogs there should be a spacer approximately 1mm thick at the back of the cassette. This spacer is included with new Shimano cassettes.

Last edited by Al1943; 04-26-11 at 12:59 PM.
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Old 04-26-11, 02:47 PM   #3
kcash
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Yup, that spacer's there. I was just a little concerned about the noise and the cracking during installation. Good to know it's normal!

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Originally Posted by Al1943 View Post
Congratulations, you're done, normal procedure. Go ride it!

edit: You said you have the correct spacers, if the cassette has 10 cogs there should be a spacer approximately 1mm thick at the back of the cassette. This spacer is included with new Shimano cassettes.
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Old 04-26-11, 04:00 PM   #4
hueyhoolihan
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the inside lip on some of the cassette lockrings i've used had a serrated edge, so do some the outside edges of the small toothed cog. together, they make a ratcheting sound when tightening down the lockring during the last turn or so. may be the cause...

huey
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Old 04-26-11, 07:06 PM   #5
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Quote:
Originally Posted by hueyhoolihan View Post
the inside lip on some of the cassette lockrings i've used had a serrated edge, so do some the outside edges of the small toothed cog. together, they make a ratcheting sound when tightening down the lockring during the last turn or so. may be the cause...
This is correct. The matching teeth keep the lockring from loosening so the ratcheting sound as you tighten it is perfectly normal.
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