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Sprocket/chain help

Old 09-13-2006, 08:05 AM
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Sprocket/chain help

Hey guys,
My stock chain has stretched passed the limit at 14k miles so I ordered a DID chain/sprocket set from Chapparral. It comes with Sunstar steel sprockets (16/43) and DID's X ring, VRM, hi-perf chain. I have a few questions:

1. The DID chain came with 112 links (compared to 102 stock). I know I need to add a couple for the bigger rear sprocket but certainly don't need 112 links, so can I just use the chain break tool to eliminate a few links, then install the master link at the appropriate location?
2. Is my assumption correct that since I'm going from 41 tooth rear to 43 that the chain will need 2 extra links compared to stock.....so 104 vs. 102? Or does it need a couple more due to increased diameter as well.
3. Does 14k miles sound about right out of the original chain? I've done 3 track days on it, plus mostly commuting miles to work (pretty easy highway miles). I'm just curious if it stretched premature at all, and if so, I'll have to lube it more often than I did.

Thanks.
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Old 09-13-2006, 11:51 AM
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I think the stock chain length (102 links) is enough to handle the extra 2 teeth on the rear, but I haven't done it so I don't know for absolute certain. Hopefully somebody who has done it will chime in. It looks to me like there's more than enough front to rear adjustment of the rear axle to compensate for the larger sprocket.
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Old 09-13-2006, 07:06 PM
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I might be wrong, but I think you'll only need to add one extra link (or pair of links, inner and outer). You are going up 2 teeth in back, but the chain only rides along half of the sprocket, so only one is needed.
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Old 09-13-2006, 07:56 PM
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Been there, done that...the stock chain length is fine. Besides, the slightly shorter wheelbase will quicken up the steering a bit.

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Old 09-14-2006, 02:14 PM
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Dunno, but if he's like me, I've got my suspension and steering just where I like it. I wouldn't want it to change for fear of instability and head shakes. Longer wheelbase allows the bike to put the power down without wheelying and adds stability. But, if you want the extra quickness, then have at it.
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Old 09-14-2006, 02:37 PM
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Originally Posted by Hawkrider
Dunno, but if he's like me, I've got my suspension and steering just where I like it. I wouldn't want it to change for fear of instability and head shakes. Longer wheelbase allows the bike to put the power down without wheelying and adds stability. But, if you want the extra quickness, then have at it.
Greg, just FYI, I have the usd forks which are shorter and the shorter wheel base from the chain and sprocket conversion. While the steering is MUCH quicker, I've yet to have any stability issues and that's at the track or on the street....even the occassional crossed up wheelie.
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Old 09-14-2006, 02:42 PM
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I would hope it's a steel front sprocket and aluminum rear sprocket? 14,000 sounds good for stock chain and sprockets I have 22,000 and I,m on my second set the next set will be the 520 conversion!!
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Old 09-14-2006, 05:37 PM
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Nah,
I stuck with steel for both front and rear. I prefer the reliability of the steel over the minor performance gain of the aluminum. I know people say they get tons of miles on the aluminum, but I'd rather not risk it. Although I love wrenching, I prefer riding.
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Old 09-14-2006, 09:10 PM
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Having used a aluminum sprocket I don't beleive that reliability has never been an issue... longevity yes, but not reliability.
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Old 09-14-2006, 09:17 PM
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My Vortex only lasted about a year but with lots of track days, if you go aluminum go with the hardend ones.
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Old 09-15-2006, 05:01 AM
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You're right.....longevity is what I meant. With 14k on my original chain/sprocket set, I'd like to go at least that far again. What's the max miles someone has gotten on an aluminum sprocket?
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