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Author Message   2734 Posted on Monday, September 13, 2010 - 01:49 pm:        Hey folks. I got a 99 M2 and this weekend I ran into what I beleive to be a trans problem. The bike started a tapping sound at half engine speed but ran fine. At first I thought it might be a lifter so I started home to investigate. By the time I got back (30 miles or so) the speedo had dropped out. The bike rode normally except this tapping became more pronounced. It didt matter what gear, rolling or stopped, clutch in or out. I pulled the speed sensor to find it covered in metal shavings. With the bike running in nuetral I can place a rubber hose right in front of the pulley on the right side and hear it really well so I know thats where the noise is coming from. Any ideas? Thanks Richard.   Reepicheep Posted on Monday, September 13, 2010 - 06:31 pm:        Off hand, I think it could be: * Loose stator bell. * Loose clutch something or other. * Broken primary tensioner backplate. * Blown out 5th gear drive assembly (hope it's not this one). Regardless, time to pull the primary cover, and sing the praises of cartridge transmissions.   2734 Posted on Tuesday, September 14, 2010 - 11:11 am:        Thanks Reepi that's the plan for Saturday. This is my first Buell and never been into a primary. The stator bell seems plausible. That would explain the noise at half engine speed and it goes up and down with the RPMs.   Reepicheep Posted on Tuesday, September 14, 2010 - 12:26 pm:        For what it's worth, when mine was loose, you would hear it ring when the clutch was in, and the ring would go away of you put even the lightest of clutch load on it (loading up the crank). You don't have to take the clutch apart to get into the tranny, the stator / clutch / primary chain assembly will slide off as a unit when the appropriate big nuts have been removed.   2734 Posted on Tuesday, September 14, 2010 - 05:10 pm:        So the speed sensor reads off a gear on the primary cluster?   Reepicheep Posted on Tuesday, September 14, 2010 - 06:33 pm:        Yes, unless it is covered with lots of little metal filings (it's magnetic)   2734 Posted on Thursday, September 16, 2010 - 11:08 am:        All is good in the Primary. Put it all back together with a clean sensor and the speedo works now. Now that I've had a primary apart I would not have looked there for the noise to begin with. There is nothing in there that would make that noise at half enegine spped. The noise however is still there.... Looks like it's in the crankcase or maybe a lifter.

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