Sprocket and chain size

Hey guys so basically I've got a mini bike frame which I'm doing up and everything's going well but I'm having trouble working out the size of the sprocket on the rear wheel it's a 50 tooth but I need to figure out the pitch and what not for getting a clutch it looks bigger than 35 chain so any help would be appreciated it's on an old deckson mini bike and I can't find a whole lot on working it out ,cheers


Well-Known Member
Measure from pin to pin to figure out the pitch, then measure the inner width to confirm the size (if there is more than one with the same pitch).

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Okay I measured my sprocket with calipers and the thickness is .184 and I don't see that number on the chart above so I'm feeling a bit lost