Wow- What a cool weekend this'll be. Big members diner on Saturday, Legendary Grp A machinery all weekend, Chance to buy old-skool-kewl team shirt.
Too good :)
Yerp. Small section missing will cause a massive centrifugal loading on the shaft and bearings at high revs. A few grams static would be in the order of 10's of kilograms at well over 80K rpm.