Triumphrat

Newby · 08-26-2007, 09:49 AM

Question for the experts! Recently fininshed a 2 hour ride and as I was nearing home I noticed when I was coasting (either in neutral or with the the clutch pulled in) a constant light thumping felt through the foot pegs. Could not feel the thump when transmission was engaged but may have been there. I want to say it was coming from the rear but couldn' t say for sure. I put it on the stands an examined the tires and saw no problems? Someone sugested possible chain lube? What about you guys... thanks - Web

DaytonaDave · 08-26-2007, 05:55 PM

Difficult to say what it might be but the chain is good place to start.

I had an annoying light knocking noise that came and went. It only seemed to happen at modest speeds and power. Turned out to be stiff link in the chain. Get the bike on a stand and turn the back wheel and look for kinks on the lower run where the chain comes off the front sprocket. The kinks can catch the frame protector that is on the inside of the frame at this location.

Newby · 08-26-2007, 07:00 PM

Thanks Dave,
I'll try that. Wish I could could give a better description...I did notice that as the speed increase so does the frequency of the thump and it disappears under 5 mph. It goes into the shop next week for it 6,000 mile service, might get it figured out before then. - Web

DaytonaNewbie · 08-26-2007, 07:52 PM

add another vote to check the chain. My 02 spent 2 years in the box before I got it. So I always thought that it was normal for a bit of a "thump" in the drive train. After recently changing chain & sprockets it was amazing the transformation. Its never been this smooth before! The old chain had a big difference between the tight spot & the slack spot. No amount of lubing could make it go away.