[Oldbikerider]

Ether,

Yes, I said "firing discs as fast as possible", but there are some upper limits here.

There is evidence indicating that too much compression leads to distorting the disc, with adverse effects on the accuracy of shot, and people are also reporting a plateauing of the achievable disc exit speed where an increase in wheel speed does not result in a proportional increase in exit speed.

So, my thinking is that yes, doing the firing in two (or maybe three) milder steps is the way to go, but I take your point that if the first wheel got the speed then why add a second wheel. My reasoning is that the second wheel simply makes sure the speed is correct, adding something extra in the case of a dirty or warped disc, but not adding any more speed in other more ideal circumstances. I'm concerned more about consistency.

Graham.