cassette chewing up the hub - advice needed

SlowMe · 15-04-2013 01:43PM #1

I took off my cassette to give it a good clean and was a bit surprised to see the cogs have been chewing up the splines on the hub. I have an ultegra 6700 ten speed cassette - has anyone any advice on what to do to about this? can the spline unit be replaced (is it even a separate part)?

C3PO · 15-04-2013 01:51PM

Common problem, the metal on the hub is softer than on the cassette - put some grease on the splines, replace the cassette on the wheel and forget about it! Really nothing else you can do as far as I know!

tunney · 15-04-2013 02:54PM

SlowMe wrote: »

I took off my cassette to give it a good clean and was a bit surprised to see the cogs have been chewing up the splines on the hub. I have an ultegra 6700 ten speed cassette - has anyone any advice on what to do to about this? can the spline unit be replaced (is it even a separate part)?

Free hub bodies are cheap and easy to replace.

DirkVoodoo · 15-04-2013 02:57PM

Take a weight penalty and replace with a steel freehub body if you can get one for your brand of hub when the time comes to replace.

SlowMe · 15-04-2013 03:39PM

thanks for the info. I've done a bit of searching but I'm coming up blank on any how to guides to remove and replace the freehub body. do you need special tools? how bad would you let it get before replacing?

tunney · 15-04-2013 03:41PM

SlowMe wrote: »

thanks for the info. I've done a bit of searching but I'm coming up blank on any how to guides to remove and replace the freehub body. do you need special tools?

Lets be honest, you've not looked very hard have you?

tunney · 15-04-2013 03:42PM

https://www.google.ie/search?q=freehub+service&rlz=1C1CHMO_enIE507IE507&aq=2&oq=freehub+&aqs=chrome.3.57j0l3j62l2.7041j0&sourceid=chrome&ie=UTF-8

Peterx · 15-04-2013 03:47PM

and following on from bad tunney/good tunney there is also a chance that your cassette may not be firmly held by the lock ring. There is often a spacer required between the cassette and the freehub and if that is missing no amount of tightening the lockring will tighten the cassette. In this case the cassette can rock on the freehub body and cause wear.

SlowMe · 15-04-2013 04:05PM

tunney wrote: »

Lets be honest, you've not looked very hard have you?

ok, ok was searching on boards rather than google and never thought of you tube....

thanks

Paul Kiernan · 15-04-2013 04:41PM

As well as ensuring you have the necessary spacers, make sure the lockring is tightened to the specified torque. This will ensure that the load (from pedalling) is transmitted sideways across the cassette/freehub and not just through one pinion.

letape · 15-04-2013 07:19PM

SlowMe wrote: »

I took off my cassette to give it a good clean and was a bit surprised to see the cogs have been chewing up the splines on the hub. I have an ultegra 6700 ten speed cassette - has anyone any advice on what to do to about this? can the spline unit be replaced (is it even a separate part)?

In terms of how to remove the freehub, it really depends on what hub you have. It shouldn't be difficult to do, but will only be required if you actually need to replace it. As CP3O said, apply some grease and ensure the cassette is properly fitted to the correct torque. After that there is nothing else to do!

letape · 15-04-2013 07:19PM

SlowMe wrote: »

I took off my cassette to give it a good clean and was a bit surprised to see the cogs have been chewing up the splines on the hub. I have an ultegra 6700 ten speed cassette - has anyone any advice on what to do to about this? can the spline unit be replaced (is it even a separate part)?

In terms of how to remove the freehub, it really depends on what hub you have. It shouldn't be difficult to do, but will only be required if you actually need to replace it. As CP3O said, apply some grease and ensure the cassette is properly fitted to the correct torque. After that there is nothing else to do!

SlowMe · 15-04-2013 07:58PM

C3PO wrote: »

Common problem, the metal on the hub is softer than on the cassette - put some grease on the splines, replace the cassette on the wheel and forget about it! Really nothing else you can do as far as I know!

What is the advantage of greasing the splines? It's not a moving part or am I missing something obvious?

C3PO · 15-04-2013 09:50PM

SlowMe wrote: »

What is the advantage of greasing the splines? It's not a moving part or am I missing something obvious?

Just so that the cassette doesn't get stuck onto the freehub - they can sometimes be a nightmare to get off!

cassette chewing up the hub - advice needed

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