S2R S4R OWNERS check your cushion drives

[techno]

Thanks Bazz. Now it makes sense.

I'll have a look at mine when I can dig the bike out from all the crap in the garage.

[DUCMONROB]

Had a mate who had one backed out and ground away the whole notched area so he could not adjust his chain.

Be wary that if this happens you can not buy a replacement outer case for the rear hub. You need to buy the whole hub which will give not much change fron $2000


I have a MPL rear sprocket carrier which stops the cush drive from backing out. Cheap insurance.


Rob

[bazz20]

well after three months got a phone call today from my local ducati and they are sending me all the  parts to rebuild the sss completely ,  id like too thank my local ducati dealer for pushing ducati on my behalf 

[ellingly]

*bump* to push people to my Tutorial on replacing the rear eccentric hub when ya cush drives go south.

Many many pictures and words lie under here

Hope a few people find it useful, and I hope more people like the pretty pictures .

[vossy]

man, my brain hurts after reading that.

fantastic write up ellingly.

[Mr.S2R]

+1

Now I have gone in to a mild state of paranoia about the cush damaging the hub.  I will be inspecting it very soon! Oh and changing my 4 year old belts too!! 

[rendang]

   Just inspected the cush drives on mine after reading this, and everything looks fine, rubber in good condition, cush drives sitting in place evenly, compared to each other and the sprocket etc . . . but . . . while poking around I noticed the sprocket can move slightly, from side to side on the cush drives. Not backwards and forwards, but side to side. Is this normal ? Like I said, everything seems locked up tight an ok.  thanks. 

[Mr.S2R]

Any recommendations on a a quick change carrier/sprocket setup?  I have notice that some of the carriers have different designs on the 'lip' to stop the cush drive bolts from touching the swing arm.  Also not all carriers are universal?

[loony888]

the quick release carrier fits all the sss bikes from 916 to the S4RS, the 848 and 1098/1198 are different, the easiest way to tell them apart is they have 6 cush drive bolts, the earlier bikes have 5. i use an AFAM, it's grey has a lip behidnd the cush drives that go for about 1/4 the circumference and lots of companies make sprockets that will fit it. STM make a beautiful carrier but of course you have to use their sprocket with it and their gear is rediculously expensive! besides, get a NCR sprocket drive and the afam one looks super trick behind it!

paul.

[Mr.S2R]

the quick release carrier fits all the sss bikes from 916 to the S4RS, the 848 and 1098/1198 are different, the easiest way to tell them apart is they have 6 cush drive bolts, the earlier bikes have 5. i use an AFAM, it's grey has a lip behidnd the cush drives that go for about 1/4 the circumference and lots of companies make sprockets that will fit it. STM make a beautiful carrier but of course you have to use their sprocket with it and their gear is rediculously expensive! besides, get a NCR sprocket drive and the afam one looks super trick behind it!

paul.

cheers for that info paul - yeah I have been researching a lot of carriers and yes I have noticed the difference between earlier up to 848/1098/1198 bolt difference.  I have seen some carriers have full lip to 1/4.  MPL sell a really nice one too!  I will look for a carrier that takes AFAM sprockets.  Now are the cush bolts themselves the same for all years?

[ellingly]

cheers for that info paul - yeah I have been researching a lot of carriers and yes I have noticed the difference between earlier up to 848/1098/1198 bolt difference.  I have seen some carriers have full lip to 1/4.  MPL sell a really nice one too!  I will look for a carrier that takes AFAM sprockets.  Now are the cush bolts themselves the same for all years?

Cush rubbers do seem to be different.

The second-hand ones I have from a 996 have part number 700.101.71A. They were superseeded by 700.901.71A. They were then superseeded by part number 700.901.71E, which is what I had in my S2R1k from the factory. These were then superseeded by 700.905.51A, which (appears) to be the current part number.

As for the different, the only one I can see is significantly greater surface preparation (pitting) on the central bolt through the rubber of the 996 ones (700.101.71A) compared to the ones that came with my S2R1k (700.901.71E). I do not know scientifically if the better surface prep of the central bolt means they're more likely to hang together.

I have some shots detailing the failure of my cush drives in that Tutorial I linked to earlier.

As for carrier, one that takes the AFAM sprockets should be good. The Chain Gang in Queensland reckon they can supply sprockets to suit the AFAM carrier. I'm not so interested in the quick change component - every 30k km isn't a drama to pull the sprocket off as I think it's an easier task than I had first thought - and am actually looking at the Stealth sprocket, mainly for the steel sprocket and the al carrier. Steel lasts longer than hard anodised aluminium, which is what the AFAM sprockets are. Question is what the cush drive retaining lip is like on the Stealth sprocket.

[Mr.S2R]

   Just inspected the cush drives on mine after reading this, and everything looks fine, rubber in good condition, cush drives sitting in place evenly, compared to each other and the sprocket etc . . . but . . . while poking around I noticed the sprocket can move slightly, from side to side on the cush drives. Not backwards and forwards, but side to side. Is this normal ? Like I said, everything seems locked up tight an ok.  thanks. 

mate I asked this question today when I was getting my rear tyre - both nuts (wheel and sprocket side) should be tightened - he said mine was a bit loose and can cause the sprocket to move and cause wear problems etc... so I would check the nut to make sure it is tight! 

[loony888]

mate I asked this question today when I was getting my rear tyre - both nuts (wheel and sprocket side) should be tightened - he said mine was a bit loose and can cause the sprocket to move and cause wear problems etc... so I would check the nut to make sure it is tight! 

yep, i check mine often.
as for the afam sprockets, they make steel ones as well as aluminium, though i'm not sure they do them for the QC carrier in steel.

paul.

[rendang]

mate I asked this question today when I was getting my rear tyre - both nuts (wheel and sprocket side) should be tightened - he said mine was a bit loose and can cause the sprocket to move and cause wear problems etc... so I would check the nut to make sure it is tight! 

   Thanks S2R,
 I checked everything and its all tight, the carrier is on rock solid but its the sprocket moving slightly on the carrier which caught my attention. Anyway,having torqued it all up, I don't think there's anything wrong, I just wondered if other S2R's did it as well.
                                        cheers       Steve

[MonsterDorf]

Yep paranoid too. Checked them today and good as but ordered a quick change carrier from California Cycle Works as well as a 43 tooth steal AFAM rear sprocket. That equates to half way between the 15 tooth front and the 14 tooth, so it'll be 15/43 which is really good for chain wear (at least according to the gearing calc).

Better safe than sorry, works for me