Ducati Monster Forum

Moto Board => Tech => Topic started by: stopintime on November 03, 2012, 03:20:54 PM

Title: Shaft moves sideways? Hmmm.....
Post by: stopintime on November 03, 2012, 03:20:54 PM
It's called the secondary gear shaft or layshaft, I think... (front sprocket 'home')

I moved the sprocket a little bit (normal), but I also put my finger on this shaft and it moved sideways (axial?).
I guess 3-4-5 tenths of a mm. The workshop manual says 0.05-0.15 for gear shafts.
Does that apply for this shaft as well?
Title: Re: Shaft moves sideways? Hmmm.....
Post by: Speeddog on November 03, 2012, 03:23:09 PM
So... the shaft that the front sprocket mounts to can move ~0.5mm axially?
Title: Re: Shaft moves sideways? Hmmm.....
Post by: stopintime on November 03, 2012, 03:29:05 PM
Quote from: Speeddog on November 03, 2012, 03:23:09 PM
So... the shaft that the front sprocket mounts to can move ~0.5mm axially?

If axially = sideways, then yes.
Title: Re: Shaft moves sideways? Hmmm.....
Post by: Speeddog on November 04, 2012, 11:20:49 AM
Not good.

I don't have specs at hand, but IIRC should be something more like 0.1mm
Title: Re: Shaft moves sideways? Hmmm.....
Post by: stopintime on November 04, 2012, 01:57:43 PM
Between 0.05 and 0.20 'optimal average 0.15' says the manual.
When/if shimmed the shafts should be closer to 0.05.

I'll try to get it measured properly.

I had hoped to avoid splitting cases - is splitting cases to shim from .3/.4/.5 overkill/anal?
Bonus of splitting is that everything else can be checked/refreshed, but I'd be happy to delay the cost.