Just put new sprockets and chain on my Pani I’m surprised to see 56 nm the torque setting for the drive sprocket, I don’t feel it is enough? Is this right.
Are you talking front sprocket here? Gary, if your setup is the Same as an 899, and I think it will be, it’s an M10 x 1.25 pitch caphead , shown below as item 3, then the 55 Nm is correct. That’s more than enough, the way it works is that the splines do all the hard work, the driving forwards and all the caphead does is trap the sprocket onto the shaft, two different forces when you think about it
If your talking about the big single axle nut drive side 55mm or so then that sounds way wrong! I’m sure someone will come up with the right figure.... pretty sure your OE cush drive sprocket too flange nuts are not to far from your figure....
This was previously posted. Print it off for the toolbox. https://www.ducatiforum.co.uk/threads/torque-settings.26548/
Yep, 55nm. Even on the race bikes, both 899 and 959. Normally engine compression in 1st is enough to get it on. Takes a bit of back brake to take it off. If you are really concerned then a fine drill bit for a hole in the nut and assuming your front sprocket isn't the solid type a bit of lock wire offers peace of mine.
Yeah... Doh!!! Drive sprocket.... Though you were talking about the rear... Sounds about right... pretty sure the V4 was the same....
Oh and forgot to add, the washer #26 is dished if I recall and if you put it on the wrong way it can work loose. Think it goes convex side out and the tension on the allen head bolt compresses it flat. I used to put marker paint on the outer face of mine on the race bikes to make sure it went on the correct way. Not got a Ducati race bike anymore so can't even go in the garage to check I'm afraid.
Correct! Technically known as a Belleville washer, commonly used in an opposed stack pattern in sheet metal press tool pressure plates Can exert tremendous pressure in a stack like this, your single one on the end of the gearbox output shaft needs to be positioned as below This will just put a bit of preload on the sprocket to hold it nice and snug
Said washer is one time use apparently! So a new one should be installed every time it’s removed. I did use one a while ago that had already been installed and yes it did break up! Not usually a stocked part so just be aware you might wait a week or so.... plus from my recollection the washer was around £12! I ended up dumping that idea and use a reusable Ti one you can lock wire once torqued..... and a little thread lock....
That is interesting because when I took the Allen bolt out I can’t remember a convex washer but that makes sense I will have another look when I am home next, thanks
