Chain length

[PSC GP200]

I was going to try 19/47 sprockets on my GP. I'm going to use a pull down tensioner and have been told either an 83 or 84 links. I don't want to buy the wrong length chain.

Thanks in advance.

[HxPaul]

According to sticky's manual,a stretched 82 link is used for that combination.I think that will be with a standard push up chain guide,if your using a pull down an 83 link will be ok,but an 84 is quite a lot bigger,so I'm not sure about that.

[PSC GP200]

Thanks. I'll get an 83.