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I just ordered a 60 tooth rear sprocket. What length 428 chain do I need?

I did the calculator and it said 112 links. I know that's not right.
 

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I just ordered a 60 tooth rear sprocket. What length 428 chain do I need?

I did the calculator and it said 112 links. I know that's not right.


You're correct. Stock is 122. I use 128 for a 14/55 combo, so I'm guessing you'll need at least a 136-138 for a 60.
 

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christddel is right on. Plug the variables into a sprocket/chain calculator and you'll get 127 and a remainder, so round up and a 128 link chain will be just fine.
 

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This is short and sweet. With Christddel post we have it all. Think this should be made a sticky if we don't already have the formula. Gerry
 

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I'm a moron. I guesstimated yours with the same axle setback I use with my ATV tire.



I calculated it by center-to-center distance and got 128 as well.



I'd buy it long, in any case. Slide the axle as far forward as possible with no weight on the bike, see where the links fall in the real world with proper slack, then break the chain.
 
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