How do I make the bore hole in my sprocket bigger?

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11/10/2018 5:58 PM

What are some ways to make the bore hole in a sprocket bigger?


11/10/2018 6:07 PM

You cant. At least not without like maybe a proper machine to do it.

Get a new sprocket if you need a bigger bore.


I don't crash, I do random gravity checks...

11/10/2018 6:24 PM

chainsaw and dynamite


11/10/2018 6:35 PM

Why though?

You can use sandpaper without a problem if you're only increasing the size by less than half a mm but any more and you risk losing the concentricity of the hole, which causes problems for the rest of your drivetrain over time.


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11/11/2018 6:45 AM

Drill press and a self centering drill bit could work, but even then there's a very high possibility of fucking up. A sprocket is one of the parts you don't want to be "pretty close"


11/11/2018 8:07 AM

as others have said, unless you're a machinist, don't


11/11/2018 12:43 PM

A milling machine, a dial indicator, and an end mill. Without having an exact side end mill, you'll need to circle interpolate the hole. If all that is confusing to you, buy a new sprocket.