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-   -   520/525 chain (http://forums.sv650.org/showthread.php?t=106513)

tranx 15-03-08 08:34 PM

520/525 chain
 
Ok with Snetterton coming up I need to buy some new gearing for the race bike. However I don't know if the bike has had a 520 chain conversion or not.

What do I need to measure to find out? I've tried to figure it out myself but seem to be having a bit of a slow day.

wheelnut 15-03-08 08:43 PM

Re: 520/525 chain
 
try this link

http://www.z1enterprises.com/referen...ntypesize.aspx

tranx 15-03-08 09:31 PM

Re: 520/525 chain
 
Ahh excellent, cheers for the link.

It looks like I need to measure the width of the rollers in the chain, not including the plates.

chunkytfg 16-03-08 06:33 AM

Re: 520/525 chain
 
why not just look at the sprockets. All mine have got 520 in the part number thats stamped on it

embee 16-03-08 11:26 AM

Re: 520/525 chain
 
Quote:

Originally Posted by chunkytfg (Post 1448326)
why not just look at the sprockets. All mine have got 520 in the part number thats stamped on it

Don't rely on this, I fitted an aftermarket sprocket (+1 g/box) and it is stamped with 520 but it is definitely a 525.

Just measure the thickness.

The first number is the pitch in "eighths of an inch" so a 5XX is 5/8" pin to pin, the second and third numbers are the nominal sprocket thickness in 1/8" units but without a decimal point, so X20 is 2.0 eighths (1/4"), and X25 is 2.5 eighths (5/16"). The sprockets are actually slightly under the nominal size to give side clearance.


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