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Why swing a bigger chain ?
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1982RD350LCOffline
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 http://i8.photobucket.com/albums/a3/ron629/2008June2007.jpg




I've now got 2 brand new chains that don't fit this 1982 RD350 LC (I'll take them back for a refund) and I have to conclude that the original owner had bought a beefier chain and sproket setup for this bike, but I'm curious why? Isn't it considered poor design strategy to increase your unsprung weight if you don't have to? The bike really only has an aftermarket exhaust tract and that's good for an extra 5-10hp (? I'm guessing ?) . . . or is my parts supply guy wrong.





ron
Post Posted: Tue Jun 03, 2008 1:27 pm
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Rich The RD250 and 350LC use a 530 chain as standard. Maybe it had been changed to a 520 (like the RZ) to save some weight?
Post Posted: Tue Jun 03, 2008 1:47 pm
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jante350Offline
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 Lighter chain and sprockets does give some extra hp's.. dragbikes uses the smallest chain possible ,capable of lasting 10 seconds....
Post Posted: Tue Jun 03, 2008 3:08 pm
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NORBOOffline
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 Most racers put the 520 set up on its better an lc does not need a 530 chain its over kill. But it is standard so the shop did not sell you the wrong itoms .
Post Posted: Tue Jun 03, 2008 5:28 pm
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BillyOffline
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 Anyone know the measures for the chains? I had a beefy chain on at first but replaced it because it was sloppy as hell. (not even worn into the sprockets Rolling Eyes) Now i have a smaller chain that fits the sprockets but i think it looks like a moped chain compared to the old one! Laughing How wide are a 530 chain? Where do you measure it? Question
Post Posted: Tue Jun 03, 2008 7:10 pm
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xen-unoOffline
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 http://www.gizmology.net/sprockets.htm
Post Posted: Tue Jun 03, 2008 7:15 pm
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ANDYLONGSOffline
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 This link may help you determine chain size

http://chain-guide.com/applications/1-5-2-motorcycle-chain.html
Post Posted: Tue Jun 03, 2008 7:22 pm
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BillyOffline
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xen-uno wrote:
http://www.gizmology.net/sprockets.htm


Interesting, but have you any idea of how wide this measure is on a 530 chain?

http://i224.photobucket.com/albums/dd50/Krafs/chain.gif
Post Posted: Tue Jun 03, 2008 7:25 pm
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xen-unoOffline
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 Overall width? Roller width + (4 * side plate thickness). For any 5xx series chain, that plate thickness should be constant. Mine measure between 1/16" and 3/32" ... likely 2mm (0.078"). so with a bit of clearance, I would say a 18mm for a non O-ringed 530 chain.
Post Posted: Tue Jun 03, 2008 7:45 pm
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BillyOffline
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xen-uno wrote:
Overall width? Roller width + (4 * side plate thickness). For any 5xx series chain, that plate thickness should be constant. Mine measure between 1/16" and 3/32" ... likely 2mm (0.078"). so with a bit of clearance, I would say a 18mm for a non O-ringed 530 chain.


Thanks alot m8. Smile
Post Posted: Tue Jun 03, 2008 8:39 pm
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SEB4LO
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NORBO wrote:
Most racers put the 520 set up on its better an lc does not need a 530 chain its over kill. But it is standard so the shop did not sell you the wrong itoms .


all my LC including road use 520 kit Wink

+1 Wink
Post Posted: Tue Jun 03, 2008 8:49 pm
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NORBOOffline
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SEB4LO wrote:
NORBO wrote:
Most racers put the 520 set up on its better an lc does not need a 530 chain its over kill. But it is standard so the shop did not sell you the wrong itoms .


all my LC including road use 520 kit Wink

+1 Wink


Me 2 if i replace them i go 520
Post Posted: Tue Jun 03, 2008 9:41 pm
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