Chain issues with gear change!!

[07vigorblue]

I stretched the buss out about 6.5" and I adjusted the chain the other day and started hearing the wearing noise. Got to looking today and I believe the chain is rubbing on the rubber mat thingy by the front sprocket and it's bugging the crap out of me lol. I switched from 17/43 to 16/43 with a brand new zvxm or whatever chain lol I can't remember the name ha! Is this issue I'm having normal

 

[dadofthree]

Yes, my factory set up hit's it too. But by changing the front sprocket you made it more apt to happen. Keep an I on it and make sure you don't start getting the swingarm.

 

[07vigorblue]

Ok it just annoys the crap outta me I thought I had the chain to tight so I loosened it just a lil just incase it was putting added stress on the drive line some how

 

[dadofthree]

If you ever watch the drag vids, you'll see the chaining slapping all over the place on burnouts. Typically the bottom, but the top can have some flop too.

 

[Blanca BusaLess]

Watch a bike on a dyno amd you'll see how much a chain actually moves around. It's scary.

The chain does contact the pad from time to time but if you can actually hear it I don't think this is normal?
If it's rubbin and rubbin then soon won't that pad be worn down to nothing? The smaller front sprocket may be your cause cuz it's simply a smaller wheel which is not holding chain up as high as it used to? Maybe?