WOW - thanks for all the interest - especially the websites, and even more to the souls at the start who published their statistics. It only seems like a moment ago that I launched this - now 2 archives already :sad:

The formula derive from that bloke Newton and his Laws of Motion. They are Fixed Laws resulting in Kinetic Energy which is measured in Joules (Kilo Joules fit better in our situation). The skill is in how to make a simple assessment of all possible discs and work out the max permissible rpm for anything that might turn up at an event.

Also, each arena will need to have an Energy Rating, which will need careful monitoring by the FRA.

I believe it is possible to create a range of charts which represent all potential styles of disc (these represent different Mass Distributions) and with a few diagrams, its feasable to select the most appropriate chart by visual assesment of the subject.

Ive done the prelims which show Mass x Dia^2 on the vertical axis (log basis - sorry) and Speed on the Horriz. These each have 5 curves drawn that show 5, 10, 15, 20 & 25 KJ.

Visually assess to choose the best chart, Weigh, Measure and Multiply to find your M.D^2 value, plot this Horrizontally and compare your max permissible speed with the agreed allowable for that event.

The BIG problem is deciding where the limit should be set for different arenas. Clearly experience is going to play a major role and organisers (FRA) will need to be extremely cautious (coz if we get it wrong and hurt somebody - weve made ourselves liable for prosecution!)

All I can say is that My recomendation on Sat is that we start with an energy limit of 5KJ (which may be cut lower) - and roboteers should exploit this by building systems with alternative drive systems that have different potential speeds.

We will need proof of your potential speed and are likely to request the disc is removed (for assessment) and the shaft run up and checked with a tacho.

More after the weekend,
Cheers,
Kev.