Quote:
Originally Posted by m5burndt
(We hope to bore-out to 1/2" ID, obviously this is not possible if the pulley is a hollow finished-bore)
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The manufacturer often provides info on the maximum sze you can bore out a given sprocket. Look on the Gates site for that data.
Also remember that you need a certain amount of belt wrap for that 18 tooth sprocket to not slip. Slipping even a little bit will cause your belt to self-destruct in a few seconds.