Tightening Shimano Cassette lockring

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BigFoz
Posts: 491
Joined: 2 Jun 2011, 12:33pm

Tightening Shimano Cassette lockring

Postby BigFoz » 18 May 2018, 2:01pm

Don't usually do Shimano, so applied my usual technique of doing the lockring up "good and tight", and the free wheel stopped working!

Have loosened it off and the freewheel seems to freeze around finger tight + 1/2 turn. What causes this, and is there a method I'm missing? Never had this with a Campag cassette. Is finger+1/2turn tight enough or will the thing fall apart under riding conditions? Bruce?

tim-b
Posts: 831
Joined: 10 Oct 2009, 8:20am

Re: Tightening Shimano Cassette lockring

Postby tim-b » 18 May 2018, 4:12pm

Hi
40Nm, tight, but not as much as you might imagine:)
Regards
tim-b
~~~~¯\(ツ)/¯~~~~

Brucey
Posts: 30867
Joined: 4 Jan 2012, 6:25pm

Re: Tightening Shimano Cassette lockring

Postby Brucey » 18 May 2018, 4:24pm

what hub and cassette model are you using, exactly?

cheers
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~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~

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fausto99
Posts: 279
Joined: 19 Sep 2011, 10:06am

Re: Tightening Shimano Cassette lockring

Postby fausto99 » 18 May 2018, 4:40pm

BigFoz wrote:Don't usually do Shimano, so applied my usual technique of doing the lockring up "good and tight", and the free wheel stopped working

Doesn't sound right at all. Good and tight should only push the cogs and spacers together (until the spacers crush?). If the freewheeling action is affected then the freehub part must be broken in some way such that allows the moving part to touch the hub shell.

Brucey
Posts: 30867
Joined: 4 Jan 2012, 6:25pm

Re: Tightening Shimano Cassette lockring

Postby Brucey » 18 May 2018, 5:18pm

Brucey wrote:what hub and cassette model are you using, exactly?

cheers


the reason for asking this is that if the wrong combination is used, then you can get all kinds of weird things happening, eg

-sprockets hitting the spoke protector disc or pushing it into the spokes
- lockring going further into the hub than normal, causing binding (eg by pushing the seal too far into the hub, or by the lockring fouling on the axle seals directly)

cheers
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~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~

Valbrona
Posts: 2146
Joined: 7 Feb 2011, 4:49pm

Re: Tightening Shimano Cassette lockring

Postby Valbrona » 18 May 2018, 5:26pm

You might find that the leading edge of the lockring is bottoming out against a component on the axle, like a dustcover. So, if you use a lockring of shallower depth it wouldn't happen.
I should coco.

gxaustin
Posts: 360
Joined: 23 Sep 2015, 12:07pm

Re: Tightening Shimano Cassette lockring

Postby gxaustin » 21 May 2018, 1:52am

Are you missing a spacer - so the lock ring screws in too far and fouls the mechanism? EG 10 speed cassette on 11 speed hub?

pwa
Posts: 7821
Joined: 2 Oct 2011, 8:55pm

Re: Tightening Shimano Cassette lockring

Postby pwa » 21 May 2018, 6:39am

BigFoz wrote:Don't usually do Shimano, so applied my usual technique of doing the lockring up "good and tight", and the free wheel stopped working!

Have loosened it off and the freewheel seems to freeze around finger tight + 1/2 turn. What causes this, and is there a method I'm missing? Never had this with a Campag cassette. Is finger+1/2turn tight enough or will the thing fall apart under riding conditions? Bruce?


I've used Shimano freehubs since they first came out and I've never known that to happen. Something unusual is going on.

BigFoz
Posts: 491
Joined: 2 Jun 2011, 12:33pm

Re: Tightening Shimano Cassette lockring

Postby BigFoz » 28 May 2018, 9:06pm

I've no idea what hub / cassette - it's a seven speed. (Had to get the Sora 8speed working with this as the reason it came across was that it strangely chucked its chain going into gear #8.) Owner can't afford new 8 speed wheel. I guess it's possible someone has previously slapped 7 sprockets onto an 8, and that would explain the tightening and locking issue. I know next to nothing about what goes with what on Shimano - last time I had Shimano it was 600 range!

Next time I have the bike over, I'll check it and reply - so far the finger + 1/2 turn is working with no issues, I took it out with a bagful of tools, did about 30 miles, worked perfectly, owner has since done a bunch of riding without issues, but I want it back to check a few things anyway - one of the spokes in the rear wheel was very iffy, big kink in it, but I didn't have a same length one at the time, so am intending to pull it, and get a a right length spoke, and retrue