What?
Me:SSTOs are easy; SSTOs that go somewhere beyond Kerbin orbit are easy; SSTOs that carry mining equipment with them to go somewhere after they’ve gone somewhere beyond Kerbin orbit are easy.SSTOs that do not use closed cycle modes are hard3
I did,and the three main fuselages were making huge red spikes.That's how I got the conclusion of
otherwise I only have evidence of the twr being too low(but some people have managed to go to orbit at twr 0.006!)