[mgsouth]

There's a slide in Manley's video that says gross vehicle weight is 11,000 kg. And 450 RPM @ 100 m diameter, so 2 km/s. Kinetic energy for vehicle is 22 GJ. Equivalents:

* 5 metric tons TNT

* 1/3000 Little Boy atomic bomb

* 4 barrels of crude oil (!)

* Boil 2,300 gallons of water

* 0.25 mg of matter converted to energy

* Enough energy to melt two 11,000 kg iron counterweights, with 2 GJ left over

* A magnitude 3.7 earthquake [1]

[1] https://www.volcanodiscovery.com/earthquakes/energy.html