Chains? 520 vs. 530 for GSX-R750
Daryl T. Hunter
I have a '96 GSX-R750 and am considering replacing the chain and sprockets.
I was thinking about dropping a tooth on the countershaft sprocket and
maybe going to a 520 chain. I've had several friends who race tell me that
520 is the way to go, but I worry about chain stretch/breakage. After all,
why did the bike come with a 530 in the first place.
I do tend to do the occasional - 5-10 per day - wheelie, often with a
little clutch assist, but don't do any hard launches or smoky hole shots.
Any comments are welcome.
Daryl
Bryan Norton
Daryl T. Hunter wrote:
>
> I have a '96 GSX-R750 and am considering replacing the chain and sprockets.
> I was thinking about dropping a tooth on the countershaft sprocket and
> maybe going to a 520 chain. I've had several friends who race tell me that
> 520 is the way to go, but I worry about chain stretch/breakage. After all,
> why did the bike come with a 530 in the first place.
Racers go to 520 because its lighter, resulting in less rotating mass.
They also change them out more often and maintain them more than street
riders. Manufacturers use a heavier chain then neccessary because they
realize most street riders run them far too long before getting a new
one.(or oiling and adjusting them). 520's are usually cheaper than 530's
too. If your gonna keep it on the street I would stick with 530 o-ring.
-BN-
Elvis Presley
In article <33C7EF...@flash.net>, Bryan Norton <bno...@flash.net>
writes
All true, but you should also know that on a CBR600 a 520 non-o ring
chain is said to be worth about 4bhp at the rear wheel over the standard
530 o ring jobby. O rings cause more friction you see.
--
The King <el...@presley.demon.co.uk>
Moped Racer Online Magazine.
Moped Mayhem Results Service, and comprehensive moped racing news
and info pages.
<http://www.presley.demon.co.uk>Last update:24.06.97
Bryan Norton
>
> All true, but you should also know that on a CBR600 a 520 non-o ring
> chain is said to be worth about 4bhp at the rear wheel over the standard
> 530 o ring jobby. O rings cause more friction you see.
> --
> The King <el...@presley.demon.co.uk>
> Moped Racer Online Magazine.
> Moped Mayhem Results Service, and comprehensive moped racing news
> and info pages.
> <http://www.presley.demon.co.uk>Last update:24.06.97
Exactly. I run only non o rings on my race bikes, although after thrwing
a chain on my endurance bike after a rain, I might run o-ring in that
one.
anyways, On a street bike I would stick with an o-ring for ease of
maintenance and longevity. I use 2 chains per year on my race bikes.
-BN-
Wera/Cmra #355 #55 Endurance #14 YSR Endurance
Yamaha RZ 350 Suzuki GS550ES Yamaha YSR 50
Pocket Change Racing Team Wheezer
Tx Mini Gp Endurance/Sprints YSR-50
http://www.flash.net/~bnorton
Robert Cozine
Elvis Presley <el...@presley.demon.co.uk> wrote in article
<eODkSTAy...@presley.demon.co.uk>...
> . . . you should also know that on a CBR600 a 520 non-o ring
> chain is said to be worth about 4bhp at the rear wheel over the standard
> 530 o ring jobby. O rings cause more friction you see.
I've heard this, too. But I've also heard that it's bullshit. I'd like to
see a few dyno charts proving the theory before I'm convinced.
Robert Cozine
coz...@ibm.net
Graham Byrnes
In article <eODkSTAy...@presley.demon.co.uk>, Elvis Presley
<el...@presley.demon.co.uk.Ican'tbelieveI'vefinallyresortedtothisannoyinghabitbutthisjunkemailisgettingbeyondajoke!>
wrote:
> All true, but you should also know that on a CBR600 a 520 non-o ring
> chain is said to be worth about 4bhp at the rear wheel over the standard
> 530 o ring jobby. O rings cause more friction you see.
I've heard (and have no citable evidence) that this is temperature dependent:
when cold, the friction losses to o-rings is significant, but once warm the
advantage goes the other way. This because warm o-rings are more pliable
and because no non-o-ring chain more than a few km old has proper lubrication
in the pins... so as the remnant grease thins with heat the metal-metal
friction increases. I'm running an o-ring (or actually a DID X-ring) on the
TZ and haven't noted a loss of power. I have noted the large gouges where
the previous owner's near new non-o-ring chain snapped at speed...
Graham