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Discussion Starter #1
How long do these last ?
Mine has done less than 5000 miles and it has alot of play,

I removed the 'silent blocs' from the cush drive assembly and refitted to the sprocket flange. This then shows alot of play between the sprocket flange and the cushdrive assembly.

Each 'silent bloc' also wobbles about in the housing of the sprocket flange.

I'm guessing I will have to now replace the whole assemby.

Any idea why this has happemd in so few miles ?

Cheers
Adam
 

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I've recently been cleaning & servicing a 2008 F4.
33,000 kilometres and the cush drives are still as new and snug.
 

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Discussion Starter #3
I've recently been cleaning & servicing a 2008 F4.
33,000 kilometres and the cush drives are still as new and snug.

I did have an issue with a hub that failed giving alot of play on the wheel, all I can think is that this may not have helped ?

The hub was replaced about 1000 miles ago and has been fine since.
 

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Adam;
1st Generation QC or 2nd Gen paddle style?
my '08 910R, 20,000mi are as tight as new
a tiny bit less than Dave's distance
 

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Sorry noel, not sure I understand what your saying.
Its an 06 1000s, are there different drives ?

Adam
Adam;
yes, on the early bikes (750s) the silent blocks pressed into the sprocket
your bike has a flat sprocket and what is called a QC carrier, the silent blocks press into the carrier
the 3rd version is '10+ Jap paddle style cush grive

if your silent blocks are loose in the carrier, its not good, probably damage from the hub failure

i doubt its the silent blocks, they have steel housings, its probably just the carrier

watch Ebay they are usually ~100 quid for the whole assembly.....i bet the dealer wants double for just the carrier

no nuts or bolts
no silent blocks
or the hub
 

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Discussion Starter #8 (Edited)
Adam;

if your silent blocks are loose in the carrier, its not good, probably damage from the hub failure

i doubt its the silent blocks, they have steel housings, its probably just the carrier

watch Ebay they are usually ~100 quid for the whole assembly.....i bet the dealer wants double for just the carrier

no nuts or bolts
no silent blocks
or the hub
If it was the hub that caused this I wish I had left the bloody thing alone in the first place, would have saved myself the best part of £1000

Looks like worse case I need 27,37 and maybe a set of 30, Total about £400 new

Do you think the wear might just be in #37.

Guess I'm off the road at the wrong time of the year now :ahhh:

Cheers
Adam
 

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Discussion Starter #9
I'm guessing it's all knackered..
I don't think the dark bands showing on the photo attached should be there....



Cheers
Adam
 

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I'm guessing it's all knackered..
I don't think the dark bands showing on the photo attached should be there....



Cheers
Adam
No grease in there Adam ?
 

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can you guys tell me how you tell when cush drives are worn? or perhaps a link exists discussing this.
Curious as I'm at 23k miles on my streetfighter and perhaps need to check them.


I have a 750 F4 had 2 sets in 15000 miles. Use Ducati ones now far better and cheaper
 

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It wasn't bone dry but it wasn't covered in it. It shouldn't move in the sprocket carrier anyhow unless the rubbers are knackered ;(

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Adam, The sprocket carrier body slides on this part of the splined carrier cover. Whilst the carrier can't move left to right any further than the hub washer ( providing it is the correct diameter ) , it can slide in and out board a tiny amount ..about a mm, Also there is a bit of play here between the carrier and the splined cover. It is what I would loosely describe as a rattling good fit.... which facilitates a bit of play or " wobble ". at the sprocket.

There should be zero movement between the sprocket splined cover and the washer...once the sprocket nut is torqued up correctly.

joe
 

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Discussion Starter #16
Imagine all the rubbers are 1mm or more diameter too small, this is what has happened to mine - the rubbers are enclosed in metal surrounds which are probably out of shape.

The sprocket can then rock back and forth as the only thing holding iit n place is the bolts through the rubbers them selves.

Then it just gets more and more loose...

The 2010 type are just standard rubbers, no metal surround to deform...

Adam


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Discussion Starter #18 (Edited)
You'll be pleased with the 2010 carrier Adam. : )

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OK,

It arrived today and I fitted it, but......

Something is not right, there is a hell of a lot of play in the sprocket, almost as much as in my original knackered one.
I'm guessing the rubbers on this one are also badly worn, there are alot of bits of rubber stuck to the pegs on the outside cover.

Edit

It is a spacer issue, the sprocket carrier touches the hub.....guess you can't use a 2010 carrier on a pre 2010 hub with the original spacer...

The spacer in the first pic is on the 2010 cush drive and there is a 1.2mm gap to the edge of the carrier so it will never tighten up on the hub and will actually touch it instead.
The spacer in the second pic is on the pre 2010 hub and is almost flush.

Joe, how thick is the spacer on the 2010 hub ?

Cheers
Adam




Looks like I am back to square one again. :wtf:

Cheers
Adam
 

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Discussion Starter #20
Yes, I see that as the hub/spindle is different.
Just wanted the thichknes of the 2010 washer flange. I gave Joe the measurements of mine and it was
supposed to fit but obviously it doesn't.

I'm guessing all I need is thicker washer made up ?

Cheers
Adam

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