Ok, so I bought my hawk (a 2000) with 14K miles on it about a month ago. I have put 1000 miles on it since then. When I bought it, the sprocket was new, all teeth were there. I know this because I inspected it while oiling the chain. So, after 1000 miles, take a look at this thing! (see attached pic).

Now the prev. owner said they recently put a new sprocket on there, it is an RK vortex brand, I believe built out of aluminum. The point is, they are lighter, but damn, I am sticking to steel from now on.

Out of 41 teeth, I think about 9 are there! Note also, these were clean "breaks" not worn down.

Anyway, what a mess, went in for a new tire and then all this crap. But I guess better finding out in the shop than out on a road.

 

Worst one I've ever seen. Burnouts?

 

I would guess that a new sprocket was put on with the original and very stretched chain. Sprocket pitch and chain pitch don't match. Replace them as a set and aluminum works fine. You may get two sprocket lifes out of one chain if you replace it early enough.

 

Yeah I think you are right, I am pretty sure the front sprocket is stock still.


BTW, does any one know the stock tooth configuration or ratio?


Na, no burn outs, only small wheelies every once in a while.

Also, what is the factory chain, a 520 or 530?

 

It's 530 x 16-41.. and even a steel sprocket will die a quick death if you wrap it with a worn out chain.