[Tommy]

If I recall my physics right, the energy stored in a spinning disc is proportional to the square of it angular velocity (RPM). So a flywheel/clutch assembly spinning at 7,000 RPM has about twice as much energy as that same assembly spinning at 5,000 RPM. It has more than 12 times as much energy as when it's cruising along at a leisurely 2,000 RPM. It's all that energy that the scattershield/bell housing must absorb if any of the parts fail. I'm glad I've got a scattershield.