Rapiers seem too weak

[Wanderfound]

Most important, though: what's the range if you refuel in LKO? Almost all of my old interplanetary ships were designed to take an LKO topup.

[eddiew]

I actually don't know xD By the time the oxidiser runs out, the nerva reads about 2000m/s, but that's still down around 30km, and a lot of the LF has been eaten by the rapiers. No reason to believe it would be any different to the range available in 0.90 though; quite possibly 4-5000m/s.

But I'd have to balance the thrust better I think. De-orbit is easy, transfer to Mun/Duna, that's much harder when you've got some asymmetry going...