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Loose cassette(11 posts)

Loose cassetteDSR
Oct 10, 2003 7:22 AM
I picked up a new wheelset (Mavic Cosmos) and can't seem to get my cassette (Shimano, 9-speed) on securely. I can full tighten the cassette, but there's play on the freewheel. The wheelset came with a spacer that I assume is for an 8-speed cassette (too big for my 9-speed). Any thoughts or tricks? Thanks in advance. S
I just got the same set and it was 8 speedlotterypick
Oct 10, 2003 7:27 AM
Hum. I just got a pair of used Mavic Cosmic Experts and they were with an 8 speed cassette.

I did the same as you which is to put on the cassette and taking off the spacer, because my 9 speed wouldn't fit with it on.

I've ridden it on a few long rides and it's working fine.

When I put it on it fit just right, so I've got no ideas besides I cleaned my cassette and then maybe tightened the locking thingie down tighter.

My book said it should make a clicking like noise as it's getting torqued so I just tightened it until it stopped and the thing spun well and shifted well. Good luck.
re: Loose cassetteMR_GRUMPY
Oct 10, 2003 7:42 AM
The spacer is for Shimano 8 and 9 speed cassettes. (They are the same width) The only time that you don't use it, is when you use the Mavic CC9 cassstte.
Ah ha!DSR
Oct 10, 2003 8:15 AM
Thanks! Gotta go throw that thing on I guess. Bummer that I've got almost 100 miles on it with the cassette not properly installed! Hopefully I didn't screw anything up too much. It actually shifted fine. But was making a racket over bumps. That's when I pushed on it and noticed there was play. Thanks again! S
Hey Grumpylotterypick
Oct 10, 2003 9:29 AM
I'm not using the Mavic cassette, but a Dura Ace one and if I left the spacer in it wouldn't fit.

Meaning, I took it out and it seemed to fit and work great.

I'm a little concerned now, I'll take it to the shop to be sure.

Strange because it fits great and works without error. Hummm.
Per Mavic Tech Tips...TFerguson
Oct 10, 2003 9:47 AM
On Cosmos, Cosmic Elite :
Compatibility with 9 speed HG derailleur
- It is necessary to leave the positionning wedge delivered with the wheel on the freewheel body.
- Then mount a Shimano 9 speed cassette.

Thanks. I will definately check it out. nm.lotterypick
Oct 10, 2003 9:58 AM
Very strange........I don't understand why ...............nmMR_GRUMPY
Oct 10, 2003 11:13 AM
Just got back from a ridelotterypick
Oct 10, 2003 12:14 PM
There was no problem with it.

Now maybe I just don't know the definition of the spacer.

When I took off the old 8 speed. There was a ring about a quarter inch thick at the end.

I took off the 8 speed and put on part of the 9 but the whole thing wouldn't go on.

I took off the ringwhich is maybe the size of a quarter and then put on the 9 speed and it fit perfect.

It shifted fine and as I said has worked great.

I'll take it to a shop to be sure, after I ride home. Maybe I'll find that the spacer you speak of is something different. Or maybe there is a space inside the cassette where the spacer fits into (I didn't check for that).

Let me know what you think. I'm concerned and puzzled.
Very strangeMR_GRUMPY
Oct 10, 2003 12:44 PM
The overall thickness of Shimano 8 and 9 speed cassette is the same. The spacer slides onto the cassette body before you slide on the cassette. It's about 2-3mm thick, so you should have that much "slop" in your cassette. I've got a Cosmos, and I had to use the spacer w/ 9 speed.
Now I'm worriedlotterypick
Oct 10, 2003 1:02 PM
Again it works, but I did notice that when I screwed in the skewer that i had to screw it far.

I've shifted a bunch of times through the range and no problem, but still I'll check it.

I've never looked but there is a 2-3 cm gap between the end of the cassette and the drop out on the highest gear side (smallest gear). Is that actually supposed to be flush.

I can't figure out why it shifts correctly if it's moved over too much. I'll try the spacer tonight when I get home.

THanks, I'll let you know how it goes. Thankfully I use my other wheelset when I'm on the group ride since it's right for sure. I think (ha ha ha)