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Sram Cassette/Shimano freehub problem

by Mr Jono
Tue, Oct 15, 2013 20:45
9

I've just got a new PG1070 Sram force cassette in the post. I've put it on my Shimano R501 wheel (which I just took an Apex cassette off), but there seems to be a bit of back & forth rotational play, maybe a mm or so. It feels as if the freehub teeth/grooves aren't wide enough.

I've never had a problem fitting Sram cassettes before, am I missing something? I know the old OG cassettes had some compatibility issues a few years back.

The freehub was fine (only about 500 miles in it since new) with the old cassette.

Any help IDing the problem would be great.

If you're new please join in and if you have questions pop them below and the forum regulars will answer as best we can.

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9 comments

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Spangly Shiny | 11 years ago
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I needed the 1mm spacer on a Mavic Ksyrium Elite but not on a Shimano DA C24.

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Mr Jono | 11 years ago
0 likes

Tightened the lockring - no play. Seems silly now!

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pauldmorgan | 11 years ago
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I have Sram cassettes on most of my bikes / wheels - no spacer in-between the big cog and the hub (unlike with Shimano cassettes).

My son has a Shimano cassette - this does have a spacer. He once installed it with the spacer between the locking and the cassette, not a mistake he'll make again...

Avatar
pauldmorgan | 11 years ago
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I have Sram cassettes on most of my bikes / wheels - no spacer in-between the big cog and the hub (unlike with Shimano cassettes).

My son has a Shimano cassette - this does have a spacer. He once installed it with the spacer between the locking and the cassette, not a mistake he'll make again...

Avatar
therevokid | 11 years ago
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hhmmmm... never had to use the 1mm spacer on my SRAM cassettes.
Thought that was only for Shimano 10 speed on to 8/9/10 freehubs ????

I have a pg1070 on a R501 and with the lock ring off that too "rotates" very
slightly on the splines ....

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Mr Jono replied to therevokid | 11 years ago
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therevokid wrote:

hhmmmm... never had to use the 1mm spacer on my SRAM cassettes.
Thought that was only for Shimano 10 speed on to 8/9/10 freehubs ????

I have a pg1070 on a R501 and with the lock ring off that too "rotates" very
slightly on the splines ....

That's interesting to hear. I didn't put the lockring on as I thought something was wrong. I'll give that a go tonight and see if there's still any play.

Thanks

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Mr Jono | 11 years ago
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Is this the part i need?

http://www.wiggle.co.uk/shimano-cs-hg-1mm-sprocket-spacer/

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Mr Jono | 11 years ago
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Thanks Colin. Is that sold separately or should it have come with the cassette? There was nothing else in the box

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Colin Lynch | 11 years ago
0 likes

You're missing a spacer that goes between the biggest sprocket and the spokes (it goes on first, before the cassette).

It's a 1mm spacer that you need when installing SRAM cassettes on some Shimano wheels. If it's not included, any bike shop should have one.

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