Sprocket hole to small. HELP!!!

[Thedude]

I just bought a 40 tooth sprocket and was about to put it on when I realized the hole was too small! I have no idea how to fix this. Do you know how to fix it? please help

 

[ctraugh]

how small is too small? Do you have an old one? You could clamp the old one to the new one and use a die grinder to make the new hole bigger.

Just an idea.

 

[Thedude]

Too small is 2mm.

 

[tykenfitz]

are you talking about the hole in the middle that goes around the hub or w/e? I used the method above with a dremel and a grinding bit, but a die grinder would work much better.

 

[Thedude]

Yes the hole in the middle

 

[kartkartkart]

lathe.

 

[sideways]

Return it and get the correct sized one? If you can't then put it on a metal lathe, a Dremel or die grinder is no where near accurate enough.

Hayden

 

[olajoe808]

I just bought a 40 tooth sprocket and was about to put it on when I realized the hole was too small! I have no idea how to fix this. Do you know how to fix it? please help

If you have access to one, a brake cylinder hone with a steady hand will get it to fit nice and tight.