Carrier moving

Started by stopintime, Yesterday at 06:20:12 AM

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stopintime

I think it's supposed to move, but do you think it's ok or too much?

If the sprocket didn't allign itself there would be visible shavings, no? My experience with sprocket shavings is that it takes very small amounts of misallignment (between front and rear) to start shaving the rear.

Seen this before? Thoughts?

 https://youtu.be/kWrSP2XhPVI?feature=shared
252,000 km/seventeen years - loving it

Howie

Some play is normal.  I couldn't find a spec, but I would not be happy with what I see.  First thing I would check is if the nuts are tight that hold the cush drive to the carrier.  Replacing cush drives is a pain in the ass.

stopintime

Thanks Howie - there is nothing holding the carrier in a specific position and that's probably how it's supposed to be to allow it to allign itself - it's almost floating on the cush drives (exept when they're stuck).

I recently replaced the axle and flange. Everything was cleaned and tightened. The carrier didn't show signs of wear. I noticed that the cush drives weren't stuck in the carrier. After I cleaned and lubed them, they were semi loose.

252,000 km/seventeen years - loving it

koko64

#3
There's some play from new with the oem rubber cush drives. Ive seen worse than that and the amount shown is pushing it. I told a guy recently to change his and his Multi had that much play. I keep reminding him and he hasnt got back to me.
How much is too much? As Howie said there must be a spec the factory use but it's not common info.
The aftermarket types of cush drive bushes appear stiffer in design.
2015 Scrambler 800

greenmonster

Shouldn't move if cush nuts properly fastened me think.
Doesn't have any play on my
MTS anyway. Different swing, though.
Should sprockets and chain really align itself every time you move?
M900 -97 
MTS 1100s  -07

stopintime

@green; the cush drives are bolted down firmly and don't move. It's the sprocket or carrier+sprocket that moves. I think it is designed to move a little and that it allignes itself - perhaps held back by how hard they usually sit.

When it's this loose, maybe it CAN become hysterical and suddenly end in a dangerous position, jamming or throwing the chain...

I have tried the aftermarket cush drives, mostly because they were red, but the bolts broke free from the plastic. Maybe bad design or maybe because just this today's situation ripped them apart (yes, I have had a worn down carrier before, but then it was loose against the flange and was NOT behaving well at all).

So, I'll try new cush drives "soon". Expensive buggers. They have lasted very long for a
rubber part, so good value anyway.
252,000 km/seventeen years - loving it