Forwards/backwards movement on cassette

Yossie

Evening all

Just a quick one:

New 10 speed Aksiums
Mavic big spacer fitted
10 speed Shimano cassette - used
All is fitted and torqued in properly
No sideways movement indicating wrong spacer fitted, however there is forward and rear movement on the cassette -maybe a mil' or so causing rattling

Any ideas what is causing this and how to get rid of it or is it down to it being a used cassette (but I can't see how this would make any differece - old hub maybe being damaged by a cassette but not the cassette)

Thankyou very much in advance

Y

oldraver

You should have a 1mm Shimano spacer in addition to the 2mm Mavic one.

desweller

oldraver wrote:

You should have a 1mm Shimano spacer in addition to the 2mm Mavic one.

Chances are it's in next door's garden...

Yossie

The whole frickin' bike is going to end up there soon ........ Thankyou for the replies - will add second spacer tonight but must admit to having never have to use two spacers on any wheels.

I can see the logic to reduce cassette movement, but is there a reason why I should be using two spacers in this particular case?

Ta muchly

Y

oldraver

Yossie wrote:

The whole frickin' bike is going to end up there soon ........ Thankyou for the replies - will add second spacer tonight but must admit to having never have to use two spacers on any wheels.

I can see the logic to reduce cassette movement, but is there a reason why I should be using two spacers in this particular case?

Ta muchly

Y

It is standard practise to add a 1mm spacer to a shimano 10 speed cassette when fitting to an 8/9/10 speed compatible hub. The 2 mm spacer would also be needed for 8/9 speed cassettes but the 1mm spacer would not be as Shimano 10 speed cassetes are machined out slighty at the rear.

SRAM 10 speed cassettes are not machined at the rear so do not need the additional spacer either.

Yossie

So, am mightily confused now - 2 spacers or not?

oldraver

Both spacers needed for Shimano ten speed on a Mavic hub.
Only the mavic spacer needed for 8/9 speed cassettes & SRAM 10 speed cassettes on a Mavic hub. ;-)

Yossie

Cool - thankyou very much.

But how will this take out forward/backward movement? (just out of interest - will be adding the second spacer tonight)

desweller

Hang on - so it's moving in the fore/aft direction for the bicycle? Presumably there is a lot of cross-axis play in every direction then?

And the freehub is definitely not moving?

Yossie

Yup - fore and aft, absolutely no sideways play in the cassette at all, free hub is perfect and brand new - whole wheel only came out of the box last weekend.

This is why its so weird .......

desweller

Is it all 10 sprockets or just the big ones on the spider?

Yossie

Hi

All - well, the 8 I could get to, the other two covered by the chain, but am presuming them as well.

Just checked for side to side as well - negative.

Its doing my nut in

oldraver

Some sprockets are a loose fit on the splines of the freehub body others are a tight fit.
When you tighten the lockring it can appear that movement along the axle is not present but, the assembly is not actually tight enough to prevent fore/aft play between sprockets & inter sprocket spacers.

My advice fit both required spacers as a starting point.
If that does not work then come back & we can all have our nuts done in :-)

Yossie

Cool - thankyou very much.

Both spacers will be fitted tonight, if this doesn't work I'm going to smash it with an axe. And then blow the remains up before throwing them into next door's garden.

I'll keep you updated!

Again, thankyou very much

Y

wishitwasallflat

Bet your next door neighbour has built a pile of old bike junk up against the fence, climbed over into your garden and filed a little bit off the cassette (exactly too small to be corrected with a spacer) in revenge! Solution - move house

PS - Not next door to me thanks!

Bozman

Am i missing something here, i took my 10sp Shimano cassette off my Mavic SLs to clean it today and there was only one 1mm spacer. All on tight and zero movement.

Yossie

Agree - I have used Mavics for 10 years or so (Cosmos, Aksiums, Kyseriums, the carbon thingies I have at the mo whose name I forget) and have played with lots of others and have only ever used one spacer, but as this is driving me mad I'm willing to try anything.

As above, I'll keep everyone updated.

oldraver

Some photos I found on flickr which show what I mean about the recess in the back of Shimano 10 speed cassettes.

http://www.flickr.com/photos/ryan_l/236 ... otostream/ keep going to the right to show more.

kettrinboy

The only thing i can think of if the cassette is properly tightened up is wear in the freehub bearings/bushes, this can happen on for example Mavics which use a plastic bush at one end, if you do big miles and dont oil the bush every few thousand miles it can dry up and start wearing the wheel hub in extreme cases,when it dries up it usually makes a screeching noise when freewheeling fast, then it needs looking at.

briantrumpet

I had exactly this problem (Mavics + 10sp Shimano cassette), and it was doing my head in too (it sounded like the bike was going to fall to pieces as I rode along) - the extra spacer sorted it.

Yossie

Yup - extra spacer has done the job - thankyou very much indeed everyone (especially oldraver) for your time - very much appreciated.

Utterly random for, as above, I have never had to use twpo spacers before - buy hey ho, that's life!

Y

oldraver

Sorry for the late reply. I am pretty surprised that you have not encountered this problem before to be honest.

Any Mavic hub that requires the Mavic spacer in order to fit a Shimano 10 speed cassette should also be fitted with the standard 1mm Shimano spacer supplied with the cassette.

The correct install procedure should be, Mavic spacer>Shimano spacer>cassette.
As you say however that's life.

Glad you got it sorted & next doors garden lives to fight another day :-)