New discovery (for me)
PD15/1, dynamo sprocket.
While cleaning up my dynamo sprocket, it appeared to me that the gear teeth were not centered in the thickness of the sprocket. I laid the sprocket flat on a surface plate, put a dial indicator by the root of a tooth, zeroed the indicator, then flipped the sprocket over, and checked. @.015 - .018 difference. I don’t know if all sprockets are the same, or if it’s just machining differences on mine.
In my case, that means that when fitting up my dynamo to the primary drive chain, I can vary the clearance on the chain just by flipping the PD15/1 over.
Im new to all this. Has anyone else noticed this, or am I rehashing old knowledge?
PD15/1, dynamo sprocket.
While cleaning up my dynamo sprocket, it appeared to me that the gear teeth were not centered in the thickness of the sprocket. I laid the sprocket flat on a surface plate, put a dial indicator by the root of a tooth, zeroed the indicator, then flipped the sprocket over, and checked. @.015 - .018 difference. I don’t know if all sprockets are the same, or if it’s just machining differences on mine.
In my case, that means that when fitting up my dynamo to the primary drive chain, I can vary the clearance on the chain just by flipping the PD15/1 over.
Im new to all this. Has anyone else noticed this, or am I rehashing old knowledge?