Given that the grandparent is presumably Ben Einstein of Bolt VC, an early investor in SpinLaunch, it sounds safe to say it's not using maglev at all. They say

Given that the grandparent is presumably Ben Einstein of Bolt VC, an early investor in SpinLaunch, it sounds safe to say it's not using maglev at all. They say the catapult will be a centrifuge spinning inside a vacuum. https://www.crunchbase.com/person/ben-einstein https://www.crunchbase.com/person/ben-einstein https://www.crunchbase.com/funding_round/spinlaunch-convertible-note--39075185#section-investors https://www.crunchbase.com/funding_round/spinlaunch-converti...