sprocket

Has anyone tested the hardness, in the teeth area, of generally available sprockets & drums? (this thread is to prevent further derailment of the "What did you do..." thread I am seriously considering buying a spare drum and countershaft sprocket (22T). One question that comes to mind, at least...

Norton 961 Front Sprocket Replacement Guide 961 Norton - Front Sprocket - Created by Richard Coote (many thanks Richard). Download the complete PDF version using the green download button at the top right of this page for detailed Norton 961 front sprocket replacement and gearing setup...