Re: Chain Question

Posted by Rod_Knockin on Jul 26, 2008; 1:43pm
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Chain-Question-tp457923p457927.html

if the chain isint one of the new parts then its time for a new chain. Take the chain off lay it down and measure the length. If its a #6 chain each link is 6/8th's (3/4'') long.  Count the links and do the math and compare the difference between the measured length and the length its supposed to be.
from the z1enterprises site
The first number of the chain designates the chain pitch and represents the distance between each pin in eighths (1/8) of an inch.

630 chain is 3/4" pitch (or think of it as 6/8"), 530 chain is 5/8" pitch - so if you are not sure what size chain you have on your bike, just measure the pin-to-pin distance.

The second two numbers show the width of the roller section of the chain in eighth's of an inch with an assumed decimal point between the numbers.  So 630 chain is 3/8" wide and 525 chain is 5/16" wide (2.5 eighths).

        520 5/8 inch pitch, 1/4 inch wide
        525 5/8 inch pitch, 5/16 inch wide
        530 5/8 inch pitch, 3/8 inch wide
        630 3/4 inch pitch, 3/8 inch wide