I just installed an AFAM quick change rear carrier and sprocket (plus new chain and front sprocket) and there is quite a bit of play in the carrier. Is this normal or desired?
Should I pull it and put a shim under the giant retaining ring that holds the carrier to the hub to take up the play?
I'd say I have about .025" play. The quick change carrier slides in and out on the 5 cush drive pieces.
Thanks,
Sandor
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2001 Yellow 748 Monoposto - Basically stock with some carbon pieces.
Something isn't right. I have one and there is no more play than there would be with an OEM setup! I can't help but think you are courting disaster if you ride the bike or even rotate the rear wheel under power for any length of time!!!
The Cush parts are tight to the hub piece. Here's what's up:
THe AFAM carrier is thinner than the OEM rear sprocket. So what is happening is that there is a gap between the retaining ring washer and the retaining ring when installed. With the assembly on the bike, I can grab the sprocket and pull it in and out (axially) about a millimeter maybe less. If I push it in, I can see a space between the cush drive retention tabs and the cush drive parts.
I looked at it again (took it apart) and the AFAM carrier is just too thin (narrow) under the retaining ring so it lets the sprocket move in and out along the wheel axis. Left and right when standing behind the bike.
Since the front sprocket has some axial play, I was wondering if this is the way the rear is supposed to be?
Thanks,
Sandor
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2001 Yellow 748 Monoposto - Basically stock with some carbon pieces.
I just installed mine this past weekend also. I didn't notice any axial play on the AFAM carrier. I'll try to look closely at it tonite and see if I have the same issue.
I looked at mine, I have no axial play on the QCC whatsoever. The only thing I can think of is whether you tightened the carrier bolts in a sequence so as to make sure everything is seated properly, although that probably wouldn't cause the issue your describing anyhow. You did re-install all 3 washers right? (Going left to right if your looking at the back of the bike: there's one on for the giant 41mm axle nut, one under the circlip on the hub assembly, and one for the hub assembly as it is seated against the swingarm)
Sounds to me like the groove that the circlip fits in is worn away, mine did this and the circlip went inwards allowing the sprocket to follow and grind into the swingarm - it's fairly common I'm told.
I bought a new carrier and they have changed the design, there is no longer a circlip in a groove on the carrier but a 2 piece carrier with a solid alloy piece inplace of the circlip part.
Now I know how to fix my sprocket/swingarm rub problem. That has puxxled the snot out of me for the longest time, the carrier rubs on the rear most part of the swingarm, but no where else.
It would probably be possible to machine something, but would the inside edge of a spacer "fall" into part of the groove? That may not matter if it's just there for spacing purposes. It might be cheaper/easier just to layer a second circlip into the worn groove, of course I guess that's not really permanent solution, and finding that giant circlip could be a problem, maybe the shim idea is better.
The new design 2 piece that I Got is essentially like the old one with the circlip groove part cut off - back to the steel bush and then a tapered alloy piece to sit on top. If I had known this and could have bought only the tapered part I would have the old one machined down and saved some cash.
If the small tapered part is available separately then just get that it would be a quick & easy job to machine the old style carrier to the same spec as the new, actually it wouldn't be hard to machine a tapered piece if you've access to a lathe, the right material and the measurements - certainly I have a local engineer who could make one for less than Ducati would sell it for.
Pics show the 2 pieces separately which if you compare to the old style you can see how simple this mod would be - it is identical in every other respect;
Hey I got a question about my install now. Does anybody know what the clearance should be between the tapered bolt head (the bolts that hold the sprocket to the carrier) and the eccentric adjusting collar. Mine clears, but barely. I would estimate that I have 0.02"
Excellent stuff, as I said before, the new carrier is essentially the old one with a piece cut off, you only need the spacer - if you can make (or get made) your own you can save big $.
AFAM quick change carrier play
good to figure this out first...spacer or ok? call AFAM or a race shop IMO
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