My '06 Std has developed a new issue in the last couple of weeks. Occasionally when pulling away slowly from a stop there will be a noisy shudder from the front left of the engine. It doesn't sound like metal-to-metal grinding but it is loud and I can feel the shudder through my left foot and through the clutch. I know little about about clutch and transmission inner workings but an initial thought would be clutch plates vibrating against each other. Another thought would be first gear is slipping on the dog gears.
Thoughts?
Hey Tdragger:
I'm no expert, but I'll tell you what I personally experienced. The clutch action was flawless. No more shudder than usual (I get a little with too much clutch at low RPMs). The bike launched well and drove just fine.
HOWEVER ... with the RPMs in the 2.5 to 4K range and under load, the beast made an awful noise. It started off quiet, and I'd look back to my wife and say, "did you hear that," but then about 100 miles after I thought that I started hearing things, it was quite distinct and predictable.
It would not do it in neutral. It would not do it with the clutch in, leading me to erroneously think it was my clutch, and leading me to disassemble and inspect the entire clutch assembly unnecessarily.
But in gear, and with even just a tiny bit of load, or a handful of throttle, it would just screech. I ended up parking the thing for fear that it was going to leave me stranded.
To this day, I still have a bit of shutter in the clutch at low RPMs if I let the lever out a bit too much. It's done that since day 1, it does it now, and it did it after the upgrade kit. So I'm not certain, but that may be a non-issue. I guess it depends on how severe it is and whether it is completely eliminated, as mine is, but slightly more RPMs.
Anyway ... FWIW.