Recently My freehub broke and so I removed the cassette to replace the freehub and noticed, whilst off the bike, 4 of the remaining bolted together 8 sprockets wiggled (4 wiggled together but separately from the other 4). (10 speed shimano hg62-10). I also noticed some scratch marks on the freehub body (see pic) and wondered if this had anything to do with it. Does my cassette need replacing, or is this OK?
-
Which direction does it wiggle in?– alexJan 8, 2013 at 21:58
-
in the direction of the chain. so rotatates slightly. im talking approx 2-3mm of rotational movement– Mark WJan 8, 2013 at 22:26
-
The scratch marks are also normal. If burrs, hit them lightly with a file. In extreme cases, these can become gouges leading to a bit of movement in the cassette in which case you should consider replacing.– Ken HiattJan 9, 2013 at 15:43
-
To add to this I've also seen a cassette wobble where the cause was a loose freehub body.– Mark WJun 20, 2017 at 8:56
1 Answer
If you're saying that, off the body, the sprockets move slightly relative to each other, that's not a problem. The sprockets are only just "tacked" together so that they remain in the right order and orientation while off the body. The body provides the strength to hold them.
If, on the other hand, you notice that the sprockets slide up and down the body after installation, or if they seem to wobble as they turn, that suggests that they were installed incorrectly relative to the notches or that a spacer is missing.
-
I would go with the missing spacer or a cross-threaded lockring. Jan 9, 2013 at 0:31
-
-
Yes. This is off the body. I will replace it and see what happens then, Thanks.– Mark WJan 9, 2013 at 13:44