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When a chain is reffered to as 70P or a 72P, what exactly does this mean? I always thought it meant 'chain pitch', but I am starting to see that it might be 'overall lenght'... Is that correct?? Thanks.
-John
 

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It is the length of the chain. You can count the links and find out what you have. there is a formula you can use to find out what gears use what chain. Someone on here knows it. I don't remember. sorry. I'll look for it. Justin
 

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Originally posted by JLeosnow@Jan 10 2003, 12:57 PM
When a chain is reffered to as 70P or a  72P, what exactly does this mean?  I always thought it meant 'chain pitch',  but I am starting to see that it might be 'overall lenght'... Is that correct??  Thanks.
-John
Dude,

you need to get out and put in some saddle miles.
You mind is starting to wonder. :p

70p-70 plate, There are 35 plates per side on my 70p chain.
 

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Formula is as follows

(Center to Center x 2)/ .375+(Top Sprocket + Bottom Sprocket)/2 = Pitch

Round up to even number.
 
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