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Falcon 81 rear sprocket

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Falcon 81 rear sprocket

Post  john87 on Tue Jul 11, 2017 9:30 pm

Hi All,

Bit of a question/problem.

Ok, so i have established that my bike uses the narrow chain [110044] This is EXACTLY the same as the industrial chain size 08B-1NA

This stuff is 0.205" wide in between the side plates. The "old" sprocket on the bike is 0.190 wide which will give a nice fit [.015" clearance]

Now, the "wide" chain.. This stuff is 0.305 wide in between the side plates. As the correct sprocket is 0.276" wide, this gives a clearance of .029" This seems ok..

Problem i got is that my NEW rear sprocket that is advertised as suitable for 110044 chain, is only 0.155" wide. When used with 110044 chain this will have a side clearance of .050"

Is this not a bit excessive??

john..

john87

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Excessive clearance

Post  piston 197 on Wed Jul 12, 2017 6:08 am

When it all boils down to it .050" is not a lot and will accommodate a bit more alignment error, on the other hand it will not be as good as the original .015 clearance and obviously it will wear quicker as there will be less tooth in engagement with the chain?
Bottom line is it will be ok, but will wear quicker than the wider one
JH
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