Crankshaft!

[Dmitry]

Hi forum! Look at the video please. What do you think about it? As it turned out I ride with this problem 6 mounths! Recently I changed piston rings valve stem seals and other but now I see how my crankshaft crookedly spinning Who faced with such? How then it works? After all crankshaft sit tight in bearings Motorcycle feels great all 6 mouths.
https://www.youtube.com/watch?v=20r80DwDiqA&feature=youtu.be

[koko64]

Bearings sound terrible!
Is it running or turning on the starter?

[Dmitry]

Bearings sound terrible!
Is it running or turning on the starter?

I do not understand the question But I think that sound is starter How the crankshaft could be crooked? When motorcycle is running - no otherworldly sounds

[koko64]

I will have to leave you in the hands of Ducati specialists and others that know more than myself.

[koko64]

If that was my bike I would take the rotor and flywheel/sprag off and have a good look in there at all the associated components. Hopefully only bearings associated with starting process and nothing past the inner case. You will have to dig in and for a close examination. I will let others follow this up.

[clubhousemotorsports]

Crankshaft is preloaded in the cases, you might see a oscilation as the end of the crankshaft is not supported in the alternator cover think of the bearing centering things.

If you have the crank over-preloaded or a bad main bearing you might have more movement.Bad mains can crack side covers the crank moves so much.

To be honest I do not run bikes without the cover so I am not sure how normal it is without the cover supporting the end of the crank. If I have one in that position I will check runout .

[oldndumb]

If it were me, I'd install the case cover and turn the engine over by hand to see if there is actually a problem. Just seems to me that that much runout would contact the cover. If it does contact the cover, stop trying to turnover the engine. At that point, I would remove the rotor and inspect.