I am changing out sprockets and chain today for the first time. My manual says to torque the front sprocket to 135 ft/lbs but when I was taking it off it had maybe 30 ft/lbs on it. It was very easy to loosen up. Is 135 ft/lbs way too much?
Factory manual says 186 Nm (137 ft lbs) with grease.
Same with my manual so I am going with it. It was just weird how loose it was already. I have replaced front sprockets on my other bikes over the years and I was expecting a fight to get this off and boy was I surprised how loose it was! ;D
Sometimes they come loose.
Not sure how it would come loose with a bent over sprocket lock washer on it but I guess anythings possible ;)
I've not seen one that came 'loose', and you were correct in expecting a fight to get it off.
Thin nut, threads only on the tops of the splines, very tight, and a hostile environment.
All conspire to make it come loose easy.
If you look at the threads inside the nut, you can likely see where they've squashed a little.
Got it all tightened down to spec last night. That 14 tooth front sprocket really does make a huge difference. I also put on a fresh pair of Rosso IIIs and scrubbed those in this morning. Seems to be a pretty good tire. Warms up quickly and scrubbed in quickly. Only odd thing about them is at about 65MPH they make a whistling sound. Not sure if it is because the stippling has sharp edges and catches the wind just right or what. If I lay off the gas and hold the clutch in at 65mph it sounds like a bomb dropping from an old bugs bunny cartoon as I loose speed lol.
It's a common problem on my Triple.
Quote from: Blackout on June 09, 2018, 03:10:07 PM
It's a common problem on my Triple.
Whats that, the whistling tires?
Just found this same problem on my KTM!