F109 Questions

[f888fhw]

I have stripped cleaned and re-built the 2nd hand F109 that I purchased on Saturday night and I now have a couple of questions.

Gearing

I will be using a Silver can until I can get hold of a 21.5. What rollout figure do I need to be aiming for? My gut feeling is 50-60mm / rev.

I need to buy a diff rebuild kit and a new 48 DP spur. What is the most common size spur that people run? Who stocks them?

Damping

The Roll Damper and the Main Damper were both empty, what damping oil viscosity is a good starting point for the dampers?

Thanks in advance, I'm sure I'll have more questions.

Simon