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Old 12-24-2011, 02:17 PM   #21
dabus63
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when the rider sits on the bike the chain will tighten up at least by a QUARTER INCH depends on your weight it may take up more slack than a quarter inch?
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Old 12-24-2011, 02:31 PM   #22
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Thanks for all the help fellas. I'll be buying a new sprockets and chain. My chain is pretty loose, and warn out. Also I checked my rear wheel and its on straight so no issue there.
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Old 12-24-2011, 03:11 PM   #23
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Quote:
Originally Posted by dabus63 View Post
when the rider sits on the bike the chain will tighten up at least by a QUARTER INCH depends on your weight it may take up more slack than a quarter inch?
I'd say more around an inch if not 1.5. If it's too tight it will affect the way your suspension works.

OP you should double check your Cush drive. You can do this by placing putting the bike in gear and moving it forward and back. If the sprocket moves more than the wheel the cush drive is worn and needs to be replaced.
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Old 12-24-2011, 03:11 PM   #24
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if youre on the northside i can help ya install it. im actually doing a 520 chain and sprocket change on my 06 r6 soon too
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Old 12-24-2011, 03:18 PM   #25
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no prob, remember that the "one inch" recommended chain slack is a recommendation to use as reference when the bike is propped up on it's kick stand and usually the bike is cold, like on a pre-ride inspection.

You will get the optimal chain adjustment after you ride the bike long enough to get the chain warm (warm chain will stretch upwards of a quarter inch to almost half an inch) while sitting on it (rider sitting on bike will take up chain slack up to half an inch maybe more depends on your weight).

So with the rider on board, kick stand up, chain warm, you should have at least a quarter inch of slack, at least this is how I've adjusted my chain(s) on and off the track at home or working at the dealership?

laters...
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Old 12-24-2011, 03:55 PM   #26
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Quote:
Originally Posted by dabus63 View Post
re-read what I wrote, WITH THE RIDER ON BOARD and the CHAIN WARM as the chain stretches when they GET WARM???
still waaaaay to tight. overtighten once and ride and ruined forever.

A too-tight chain makes it run hot which overheats the rubber o-ring bushings and allows the internal lube to leak out and preston chango - chain is really done.
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Old 12-24-2011, 04:56 PM   #27
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OMG!!?!?!? I may have to post a video?!?!?!

That one inch or one & a half inch chain slack is recommended and checked when the bike is on its SIDE STAND WITHOUT A LOAD/RIDER ON BOARD and usually a cold chain.

But when you sit on the bike THE CHAIN WILL TIGHTEN UP and you will loose about half an inch maybe MORE of that ONE INCH CHAIN SLACK if you are over 150 pounds which I bet most of us are. Also, when the chain is warmed up it will stretch and gain up to about a quarter inch of slack, depending on how old or worn the x-rings or o-rings are on the chain.

To get that accurate chain tension the rider should be sitting on the bike as that will remove some slack off the chain.
Kinda' like how one would set up their SUSPENSION "SAG" setting at the race track, you need to sit on the bike to set it up properly.

Setting up your bike on just MEASUREMENTS alone is only half of the equation, the rider needs to be sitting on the bike to get the setting just right.

So my point is if the rider is already on the bike after the chain has been warmed up there should be about a quarter inch of slack (up & down play) left on the chain.

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Old 12-24-2011, 05:09 PM   #28
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Old 12-24-2011, 05:10 PM   #29
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that one inch of slack is given out as a recommendation as all riders will vary in weight.

When you sit on your bike the seat height drops because of your weight and the swing arm moves upward (like if you were to hit a bump) in its length of suspension travel, hence taking up some chain slack and making the chain tighter.

That one inch is a recommendation given out by honda, yamaha, suzuki, kawasaki, etc... because they can't predict the exact weight of every rider.
That one inch of slack is given as a recommendation to accomodate the amount of slack taken out of the chain when the rider sits on the bike.

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Old 12-24-2011, 05:14 PM   #30
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Someone getting their panties twisted up? Relax.... It's not a contest. Some of us also have quite a bit of experience to share, brother. Especially when we are essentially saying the same thing.
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Old 12-24-2011, 05:19 PM   #31
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hahahaha, its all good, juss tryin to help a fellow rider out.

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Old 12-26-2011, 09:08 AM   #32
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Quote:
Originally Posted by ivancuriel View Post
Under hard acceleration in first gear, my R6 has a really bad clacking sound. I'm not sure what it could be. My first guess was my suspension, but someone else told me it was my transmission. Under normal acceleration it is fine. When I wheelie and accelerate the clacking sound is bad and the bike jerks on the rear wheel a lot. My rear suspension has taken some abuse, 20k miles of abuse to be exact.

My main question here is. Could this be a transmission problem? Or is it my rear suspension like I think it is.

Any info would help. Thanks
chain and sprockets......................................... ..

also when setting the chain play, check the slack all the way round, not just at one point, and set to the tightest point.
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Old 12-26-2011, 10:35 AM   #33
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My bike has 40k miles right now.. I rode that like if it was the end of the world. I had 3 new chains and sprockets replaced as of now.. I'm going on my 4th one (rode it 24/7 and lubricated the out of it)

I have a 520 so they dont last as long... You have 20k on this original chain, this will be the 1st thing I will replace before anything else..

Good luck.
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Old 12-26-2011, 10:47 AM   #34
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http://www.dirttricks.com/Chain-Wear.htm
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Old 12-26-2011, 10:48 AM   #35
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By the way.. here is your service manual if you need more info..
http://www.r6messagenet.com/forums/p...1616-21-61.pdf
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Old 12-26-2011, 10:48 AM   #36
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a certain new member needs to relax. half of his total posts are in this thread. you've said all you need to say...move on
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Old 12-26-2011, 10:51 AM   #37
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Quote:
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a certain new member needs to relax. half of his total posts are in this thread. you've said all you need to say...move on
lol.. thats usually the case with new members.. "been ther done that"


Now when they say to me I'll just smile and move on...

Dont take post personal "Rule # 1"
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Old 12-26-2011, 11:30 AM   #38
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attachmentphp?attachmentid50972&ampstc1&ampd1322709489

I would agree with the chain stretch causing the noise, the chain will not seat correctly in the sprocket. When you replace the chain, replace sprockets (not Al.)

4-15/16 from the service manual linked above
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Old 12-26-2011, 11:44 AM   #39
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defective anti-clacking valve?
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Old 12-26-2011, 07:23 PM   #40
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1/4 inch of slack with the rider on the bike is way too tight folks. It can cause the rear suspension to bind. Do NOT do that. Once the suspension binds, the only remaining suspension is the flex in the rear tire. Bad juju.

Check your service manuals. 1" to 1.5" when the bike is on stands is fine. Err on the side of being to loose, not too tight. A chain does not appreciably stretch when it gets warm. It stretches over riding time. Lots of miles.
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