Pully Bearings

[He Man]

I can't localize the noise on my bike, but there is a screetch on take offs on the right side of my bike. Not sure if its the bearings on my cam pullys or the clutch. There has been hardcore rain, and ive been riding in it for the last 3 weeks (closed belt covers, but the humidity has also been high), so its been wet atleast 4 days a week x 3 weeks. Ive tried rolling the bearings by hand ot feel for binding, but no joy.

I'm not sure if its rust in the bearing housing or something else. Are they sealed bearings? How much would it cost to replace the part? Im about to just take the belts of and go at it with a can of silicone lube. I have new belts waiting to be installed anyway.

Any advice?

[DucHead]

There is at least one recent thread on wanked cam pulley bearings...try a search.

[scott_araujo]

Pop the covers and take a look at the bearings.  If any of them don't sin freely don't ride.  If the bearings are not moving freely they are eating at the belts.  Silicon spray is not going to fix this, get new bearings.  I think there is a generic replacement for one, the other is a Ducati part.  Check the alternative parts thread here or on TOB.

Scott

[wiggy_nz]

If your bike has a dry clutch it is probably the bearing in the middle of the clutch ie at the clutch end of the push rod.

[hypurone]

I have new belts waiting to be installed anyway.
Any advice?

Replace it all when you are in there. Idlers, tensioners, everything. Not worth the risk of trashing your new belts or the engine! just my .02...

[desmo_drum]

I replaced my bearings. They are approx. $20 ducati part, that was 4 years ago. I used a battery terminal puller to get the bearing off the shaft. Worked great!

[He Man]

Ahhhh. Can anyone give me a list of parts id need to buy to replace my basic pully assembly. If the ducati part is $20, the generics must be just as cheap. But i have no idea how to do it. I assume the system is the same as the non DS engines? In that case ill just pull out my haynes manual and figure it out.

As for that middle bearing on the clutch plate, ill take apart my clutch this weekend and check. i couldnt feel any bindings  on the belt rollers. I havent checked the pullys themselves since there are still bents hooked onto it.

If it is the belt system, if i turn hte rear wheel i should be able to hear that noise no?

[Ivan]

I can't localize the noise on my bike, but there is a screetch on take offs on the right side of my bike. Not sure if its the bearings on my cam pullys or the clutch.

If the belt roller bearings are good, I'm betting its just your clutch screeching at you.  I would also think that belt roller bearings would not make noise only when you are taking off.

My clutch screeches sometimes, usually the first time I ride it after washing the bike, even tho I always run the bike right after washing it to dry the clutch so the plates don't stick together.

[A.duc.H.duc.]

I thought the DS motors didn't use roller bearings for the cams. Can anyone confirm?

Could still be the tensioner pullys though.

[Ivan]

I thought the DS motors didn't use roller bearings for the cams. Can anyone confirm?

Could still be the tensioner pullys though.

This is true, the cam bearings for the DS1000 are plain bearings.  When I referred to belt rollers, I was referring to the tensioner and idler rollers.   The cam bearings should not be a problem unless they were deprived of oil for some reason.

[He Man]

still havent had time to open her up but its sounding more and more like the clutch is giving out. Hasnt groaned yet, but its hard to find neutral, and my shifts are very very rought. The Barnett clutch plate, as people have said, wear VERY quickly. Especially in the rain. I think i will be picking up a stock Ducati pack as a replacement.

[He Man]

update, its the clutch pack alright. ~3,000 miles on the Barnett before it died. going back to the stock plates.

[Triple J]

Damn...you are ROUGH on clutches!! Didn't your stock plates last less than 10K miles? 

[bobwithboobs]

update, its the clutch pack alright. ~3,000 miles on the Barnett before it died. going back to the stock plates.

post a pic of the clutch surface . 3000 miles is nothing even if you joy ride it once ina while. intrested to see how it looked after 3k miles

[He Man]

ill try to snap some pics next time i take it apart and post up. Its kind of annoying since i have the ring that covers the plates (vee two basket)

Damn...you are ROUGH on clutches!! Didn't your stock plates last less than 10K miles? 

they lasted 9,000 miles. NYC riding..... slipping the clutch like a mad man & really hard take offs. If i had to guess, imagine riding for 25 minutes with the clutch pulled in half way everyday at 10mph. alot of it is while lane splitting or when a cop is around and i cant lane split so its

1st gear,
slip clutch,
move up,
close clutch,
hold for 4-5 seconds
then give i a bit more speed.
rinse and repeat.


one thing i HATED about the Barnett is that the friction stuff gets REALLY sticky and seem to dissolve into 1 when exposed to water...and i think me riding in soaking rain about 12 times in the last month really did a number on it. I never had that issue on the stock plates.

for the record i did NO burnouts on these.