[daneh]

Hi, just wondering if anyone knows why Ducati recommends different chain tensions for the regular 800 and Sixty2 models? For the regular scrambler they recommend 27-29mm, but for the sixty2 they say 39-41... Mainly curious because every time I take my Sixty2 to the dealer here in Bangkok, they seem very eager to over-tighten my chain...

 

[Derek]

Possibly different sprocket sizes or more likely different suspension geometry, i.e. longer/shorter shock, harder/softer spring

 

[Max Kool]

Does the sixty2 have a larger rear sprocket?

 

[Joooooooosh]

Bikes are different weight, have different swing arms and different gearing. I'm sure the geometry is slightly different too, with the conventional forks up front.

 

[Derek]

Does the sixty2 have a larger rear sprocket?

48t compared to 46t on the larger bikes.

 

[stavely]

Recommended chain slack has nothing to do with gearing or sprocket size folks. Its to do with swing arm length,suspension travel and drive sprocket off-set from the swing arm pivot.
As the swingarm moves through its travel the chain tension will vary because the drive sprocket and swingarm pivot are not concentric.. So you have to leave some slack to allow for the tightest position.
If you change a sprocket size you need to correct the slack.
I haven't seen a 62 in the flesh but pictures show that the swingarm is different at least. But 41mm of slack does sound a lot.