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Old February 16th, 2008, 04:34 PM   #1

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ever seen this happen before?

I left the gas station,took off in first,ran it up to about 8k and shifted into second and grabbed a handfull of throttle accelerated momentarily and felt grinding like it jumped out of gear.So I tap the shifter really quick to put it back in gear,needless to say that didn`t help.I figured my chain had come off so I pull to the side of the road.When I got off the bike to check out my chain this what I seen to my amazement.This really could have been nasty if my rear would have locked up as I was going over 60mph when it happened.I hope the warranty covers this because it really gauged up my swingarm and I bet it`s big $ to replace.
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Old February 16th, 2008, 04:43 PM   #2
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Can't say I have seen this one but I'm sure it has happen on some bike.

Good luck with it all, that sucks!

Jason

ps. That chain of your's really looks dirty BTW.
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Old February 16th, 2008, 04:58 PM   #3

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Sorry for being a bit of a dumb a$$ but what happened there? Has your chain actually jumped off? Almost looks like the rear sprocket has lost contact with the hub and ran forward into the swingarm?

Hope you get it done on warranty.

Nick
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Old February 16th, 2008, 05:14 PM   #4

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It actually sheared the hub out of the sprocket.I just put a power commander and Dan Kyles map on my bike.I could feel that the bike had more power but I would have never had thought it had enough to break the sprocket.
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Old February 16th, 2008, 05:21 PM   #5
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You might want to take out the PC first before taking it to the dealer.

Good luck.. Let us know what happens next.
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Old February 16th, 2008, 05:31 PM   #6
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That's not right, wait until people start putting nitrous and turbos on these. You'd think it would be over engineered enough to handle the (maybe?) ten percent increase in power you got with the power commander and remap. I hope this is just a fluke.
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Old February 16th, 2008, 05:35 PM   #7

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My dealer is the one who suggested I install the power commander to smooth out my engine.
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Old February 16th, 2008, 05:44 PM   #8
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Damn - thats not good at all, no no no, not at all.
.................. As soon as it is pulled apart the reason may become more evident. Let's hope it is dealt with warranty.
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Last edited by brettc63; April 1st, 2008 at 09:44 PM. Reason: Speaking out my rear end.
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Old February 16th, 2008, 05:59 PM   #9

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WOW
I want to cry for you. That sir is what you call structural falure. if it is the original sprocket, go to the dealer and say ( hey i want my bike perfect again )

That should take care of it.
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Old February 16th, 2008, 06:15 PM   #10
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...just thinking out loud...

Any chance the chain could have been too tight?

HORNETDRIVER
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Old February 16th, 2008, 06:27 PM   #11

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Just out of curiosity what mileage do you have?
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Old February 16th, 2008, 06:55 PM   #12

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8500 miles, and the chain was not too tight I just checked it when lubed it this morning
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Old February 16th, 2008, 07:13 PM   #13

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The sprocket has failed under sheer at the mounting locations? Looks like you can see the sides of the cush drives pulled up to make way for the mounting bolts from the hub. Effectively leaving the sprocket to be free-wheeling around the hub under power from the engine?

A few q's I'm wondering:
Are the sprockets exclusive to the 1098?
Are the components in question made in batches and distributed to particular bikes (ie traceable)?
Should we be parking up until this is ressolved, or at least have bike VIN confirmed as having a sprocket from a different batch?

My first impression looks like failure due to mechanical defficiency - warranty job.

Nick

Last edited by Nick Carpenter; February 16th, 2008 at 07:18 PM.
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Old February 16th, 2008, 07:38 PM   #14

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nick your completely right in your observation.everybody needs to inspect their sprockets.If this happens at high speed or in mid corner it could be deadly.
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Old February 17th, 2008, 07:49 AM   #15
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Looks like a broken cush drive not the sprocket
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