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Hazelton, Kansas | Andrew,
Check dimensions.
A 9 tooth #80 roller sprocket will have a pitch diameter of roughly 3”. The height dimension of the roller link is 0.95”. If the hub OD is much larger than ~2”, it will not clear the link. So, you’re asking for a 3/8 key in a hub with a ~.25” wall thickness. Doubt you’ll find that off the shelf.
You could possibly have a hub machined with a very shallow key way, or investigate changing ratios or chain pitch.
https://www.peerchain.com/product/ansi-standard-roller-chain/
Regards.
MDS
Edited by crowbar 7/16/2024 16:12
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Shot in the dark. Weld on Sprocket question.
