Whats the difference between a 520 and 525 chain ? - Page 2 - Sportbikes.net
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post #16 of 22 (permalink) Old 02-02-2005, 01:02 AM
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i believe that when looking at chains, the numbers tell you everything. its like the 5 is the distance between the rollers, and then the next two numbers are the distance between the plates. so both a 520 and a 530 are the same space between where the pins, or rollers are, and the 520 has closer spacing between the plates than the 530. i can't remember all the specifics.

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post #17 of 22 (permalink) Old 02-02-2005, 08:41 AM
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post #18 of 22 (permalink) Old 02-02-2005, 08:43 AM
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Quote:
Originally Posted by jim schmidt
So you wannna get technical?

http://www.didchain.com/spec.html
As noted, the difference between a 525 and 520 chain (100 links) is about 3/10 lb.
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post #19 of 22 (permalink) Old 02-02-2005, 06:33 PM
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Quote:
Originally Posted by TTsixxer
The SV comes with a 525 stock? .4 of a sec less and 5 more mph sounds a bit far fetched for just switching to a 520 chain. Where the conditions the same when you made those runs? Ambient temperature/humidity/barometric pressure can do wonders on the 1/4 mile et.
Well, i did add a slip-on (M4) at the same time, but without a re-map. With the pipe, the bike actually felt worse below 6k and the same above. Temps were within 5 degrees, dunno about the rest. Slip-on may have helped some, but i doubt it by itself did .44 either.
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post #20 of 22 (permalink) Old 02-02-2005, 06:39 PM
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Quote:
Originally Posted by jim schmidt
As noted, the difference between a 525 and 520 chain (100 links) is about 3/10 lb.
Correct, but if you switch to a rear aluminum sprocket, weight savings are much better. As i stated previously, doing the conversion (with aluminum rear) saved me 1 pound (well, 15 ounces to be exact). Ask any professional drag racer, reducing rotating weight (wheels, brakes, etc etc) makes a huge difference.

To state another example, a buddy of mine had a 97 Mustang GT...bone stock except gearing. He had Cobra R (17 inch) rims on it and ran a best of 14.5 on street tires, and 14.0 on slicks. Switching to pro stars (LITE drag wheels), he went 13.7 on street tires. This was with NO other changes.

Lighter is always better, but more so in the chain/sprocket and wheel area.
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post #21 of 22 (permalink) Old 02-02-2005, 06:45 PM
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hey Tragik ?
Did you replace both sprockets or just the rear , and are they the same ratio as stock ?
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post #22 of 22 (permalink) Old 02-02-2005, 07:59 PM
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both at the same time...like i said, i did the 520 conversion. Went with 15/47. Before i did that, i had already geared it 14/45 (15/45 is stock). If you haven't put a 14t front on yours yet, do it. It's the best bang for the buck for the sv...period. Cost was like 20 bucks when i did it before the conversion.
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