Ben,
The reason for the Ducati Tool is so that you have a Refernce Standard by which the distance can be accurately set following chain adjustment.
If you follow Rattler's advice and do some experimenting with the tie bar length and find a length that satisfies you (Ooooer missus
), then you can use the Ducati Tool to record the height between the refence point and the rear spindle.
The tool in question does not need to be a specific Ducati one - it just needs to be able to accurately record the geometry. I made one from a bit of MDF I found in my garage and a bit of Ally to measure the vertical distance.
I have my steering head at "steep" and have raised the rear end - but then it's all down to preference..
In summary:
- Obtain massive tool
- Raise your back end
- Select a suitable length
- Play around until satisfied