[injected]

To go back to the timing question, I think even if all the standard electrical parts are required by the 2010 rules to be retained, it's still too easy to cheat by filing the trigger on the flywheel and advancing the ignition that way (albeit by a fixed amount throughout the rev range).

I think that the standard ignition architecture should be retained, but advance curve and timing trigger should be free, even in Class B. This would allow any igniter boxes to be fitted, and the trigger could be played with.

Getting performance gains from this rule would depend on careful work and testing more than ££, so it fits with the DD ethos.

EDIT: I believe that the thing that stops 583's performing is the piston/valve/head combination, so pursuing performance via timing alone is going to produce small results. It would be interesting to do some research...