Cush drive tire change/balance question

[Justin]

This may be a silly questions, but here goes. The Hayabusa has a cush drive system, so when the wheel is pulled out, the sprocket assembly just pops out of the cush rubbers - like the image below.




My silly question is, does the sprocket assy need to be on there when it's balanced? Or does it not matter at all?

[Windblown]

No. It does not. Never seen a vendor balance a rear with the cush drive and sprocket installed at the track regardless of whether they were using a static or spin balancer. If it's good for 150+, it's good enough in my book.

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[Justin]

No. It does not. Never seen a vendor balance a rear with the cush drive and sprocket installed at the track regardless of whether they were using a static or spin balancer. If it's good for 150+, it's good enough in my book.

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Awesome, thanks  

[1000lbs]

Not a silly question at all.  I had the same thought when I started changing my own tires.  I've done the last several sets minus the cush drive (including track machine) with no ill results.  This includes a set on the dual sport, the touring rig, and the track whore.

[kevin_stevens]

It theoretically matters, but as noted most people don't worry about it.  If I'm doing my own wheels, the first time I change tires I balance the wheel with the sprocket in place, get the most neutral location, and mark it so I always put the sprocket back in the same slot.  But that's just because I can, I don't really think it makes a significant difference.

KeS

[veefer800canuck]

The weight of the sprocket drive assembly is close to the center of rotation, and therefore matters less than say, the tire.

For theoretical perfect balance, yes you could balance the whole assembly, but the first time you lock up the rear tire and skid it a distance, it's out of balance.

For all practical purposes, don't worry about it.

[bomber]

Hell, I balanced my wheels, very carefully, and havn't bothered since, through 5 changes of tires.

Up to 140, I can detect no problems at all . . . .modern tires are pretty darned good in this regard . . . .

Now, if I was going to the Salt in a streamliner, I'd bother.

[Justin]

FYI - I balanced without the sprocket assy and it is fine - tested to speeds up to xxx