Motoscrubs.com

Just like to confirm the info I found in motoscrubs technical section.

Ducati Singles Wheels
Rear Wheel bearings
The wheel requires two #6202 2RS bearings with shields.
The cush drive requires two #6004 2RS bearings with shields.

Regards

The parts catalogue shows 3 bearings and lists their dimensions. They translate to 2 X 6202 and 1 X 6004. There is also a shaft seal shown. If you don't have the parts list, pm me your email and I'll zap you a copy.

Thanks Geordie,

I had thought there was only one bearing in the cush drive.
Ill need to check what spacers there should be.
Sealed bearings will be so much better, my bike still had an open bearing on the brake side, it is this one that has broken.

Regards

The cush drive with 2 bearings was in the 450 bikes only -> parts catalog.

Hans

Will the cush drive of a 250 take two bearings?

Watch out for loose bearing housings and fine cracks in the alloy , a known issue.The internal spacer length can be important too. I thought mine was too long but i think its more of an issue if too short and allows the bearings to be pinched.

Alex, I have managed to squeeze a narrow bearing into the outside of the cush drive, next to the standard bearing, in place of the rubber seal, and then shorten the spacer to suit. This was along time ago, so I don't remember any more about it.

Colin

Thanks folks,

I'll look at the spacers as when the wheel nut is slackened there is a lot of free play to be taken up.
It is about 6mm at the sprocket side, when I tighten the nut the swing arm is bending and/or the spacer is too short.
It could be due to the worn bearing at the brake side.
How much free movement should there be when fitting the wheel into the swing arm?

Regards

According to the parts book, the spacer next to the sprocket should be 13.5mm wide. You could fit a washer over the spacer that goes between the cush drive and the wheel bearing to take up any slack in the wheel assembly.

Colin

On my narrowcase there is a sliding fit of the hub with spacer into the swing arm. When I dismantled for the restoration, I found the progressive collapse of parts had been taken up by winding on the axle nuts - to the extent that the swing-arm was distorted enough to require replacement as the more economic repair. I understand the hub failure is common as Bevel Bob has described.