Chain rubbing on case

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KDX220PHIL
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Chain rubbing on case

Post by KDX220PHIL »

Hi guys,

Here is my problem- I changed my CS sprocket to a 12 tooth cheapy while keeping the rear at 47 teeth to test the ratio.
When I removed the 12 tooth sprocket I noticed the bottom of my stock O-ring chain was rubbing on the case :? .
Has anyone experienced this with cheap sprockets before or is there something I am missing?

I think I will move to a 13:50 if I can't get this figured out.
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krazyinski
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Post by krazyinski »

I think its in the manufacturing of the sprockets I have a 13 t did the same. the maker was Primary drive sprockets and its a cheep one .
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canyncarvr
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Post by canyncarvr »

It's not the number of teeth that is the problem.

Consider the source
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scheckaet
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Post by scheckaet »

:pop:
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KDX220PHIL
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Post by KDX220PHIL »

>|<>QBB<
scheckaet wrote::pop:
Haha, I like that. :pop: looks like me eh?


I should have at least spent the extra $10 on a Sunstar. I'll pick one up this weekend and try it out. Thanks.
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canyncarvr
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Post by canyncarvr »

Waiting for....something? :wink:

I don't KNOW what the interference problem is..maybe it's an overweight chain. Heck...maybe the master link is goobered!

I don't even know what 'the bottom' of a chain is. What's on the top ON the top is on the bottom ON the bottom.

But I know that the count of 12 is not the problem.

I recall using a PrimaryDrive sprocket before (12T) and not having that problem.

I know that the cheep CSS I have tried generally don't fit for diddle on the splines. VERY wonky (sloppy). Renthal is the only brand I've used that fits half-way decent. I've had trouble getting a 12T Renthal CSS in the past.......

Consider the source
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KDX220PHIL
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Post by KDX220PHIL »

>|<>QBB<
canyncarvr wrote:
I don't even know what 'the bottom' of a chain is. What's on the top ON the top is on the bottom ON the bottom.
Good point. This may not help any but I am reffering to the interior portion of the chain closest to the case and above the drive shaft. :shock: It is the bottom corner of "that" part of the chain that is rubbing against a shoulder on the case. I dont have any pictures handy, but it is so minimal that if I were to step up to a 13 tooth of the same brand/size it would not rub. The sprocket was a generic one sold by Parts Canada and it is stamped YAMAHA on the package!
It fits but obviously not that well.
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canyncarvr
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Post by canyncarvr »

Some Yamahas (Warrior for example) use the same CSS.

Your notice of something 'minimal' may well have completely escaped my notice.

So...I take back everything I said. My bike may indeed show the same mark..but it is indeed minimal. Well, to the point nothing bad has come from it.

I've run a 12T CSS for just about the bike's whole life.

Consider the source
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Non impediti ratione cogitationis

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