Cleaning a bike sprocket ?

[Magic_x_uk]

Hi, just giving my bike a good old fettle and trying to get the chain clean and free of any gunk.

But my rear sprocket. How do I get this clean and the dark bits off?
or dont i.
Thanks.

Ps: not come out to bad those photos, taken on a Blackberry 8900

 

[Dogbreath]

You likely won't get it off, it's where the plating has started to pit. A wire brush would probably make it look better for a while, but you will remove even more of the plating so it will look terrible after a bit of moisture.

 

[Electroshadow]

is clening of all the gunk of the chain's just personal looks thing?

i mean ive just changed my chain today has the o.e one did 25,000 before it went. i had scott oiler fitted but i never once cleaned the chain.

 

[Magic_x_uk]

no worries, just thought id ask.