I don't think that's correct. @pbhjpbhj talks about magnetic braking and some sort of pneumatic braking. The sibling to his comment by @fredley mentions it, but

I don't think that's correct. @pbhjpbhj talks about magnetic braking and some sort of pneumatic braking. The sibling to his comment by @fredley mentions it, but I don't recall seeing that yet when I posted mine.