[Ducati] Re: Ducati flywheel nut loosening

[Rich Roberts]

How did you hold or lock everything down to torque? Did yuou use a rotor holding tool or???? I have also had them loosen up after using red locktite. Mainly cause I did not have something I could hold everything with so that all the torque applied actually ended up on nut. I think when doing this the rotor holding tool is always a good idea.
   
  BCM used to machine down stock rotors for 75 bucks, cut weight about in half. I thikn several listers have gone this route and it is as ggod an option as Nicholes etc. at less dosh. I did it years ago...whne the 4 oz Nichols was just not a good idea for my 955SP, having rotor mass keeps things running at low rpms when running cams that dont really work so well at low rpms. So for some models a couple pounds is better than 4 oz versus the almost 5 pounds of stock. Rich

Douglas Hunt <stingray at charter.net> wrote:
  snip--Flywheel rotor etc coming loose has been a recurring problem with
Ducatis for some time. Typically this happens when flywheel is changed out
for an aftermarket flywheel and the retaining nut is not properly torqued. I
do believe over the course of the past 10 years flywheel nut torque may even
have been addressed as a factory bulletin, meaning it was not a recall but
an advisory to shops to at least for it as a potential problem. Some of us
have been fortunate to simply discover a loose nut. This was the case with
me at least once. In another case nut was loose enough that it wallowed out
keyway on rotor and I had to replace rotor. So it does happen, usually it
will make noise or present other problems before it goes so far as to damage
stator and pickups.--endsnip

i just completed the replacement of my starter sprag spring(1992
907ie),which required the removal of the rotor and flywheel and i used
permanent red loctite and 140 footlbs on my torque wrench(too bad i didnt
have enough xtra cash to put on one of those lightweight flywheels while i
was in there)but that job wasnt near as bad as i thought it might be so
maybe this winter a lightweight flywheel project might just materialize.


doug hunt

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