Just hurl the counter weight into the side of the structure. It's armored. I was already pretty sure they had thought of everything, so it's nice to see my suspicion confirmed.
Right? we'll just take a metric ton of counterweight and slam it into the wall at Mach 6. There happens to be pretty good research behind that.
Lol, yeah. A better solution is to have another interlock pointing down into a tunnel into the ground to chuck the counterweight into, but I think they were planning on having the command and control facilities there, or the infrastructure to access the "tether" to load another rocket? Nah, just launch Rods from Gods into the side of the technician break room. 10 times a day. It's armored, see?
no no they're planning to launch two of these things at once, they said as much. Because having an arm that pulls against Is totally going to be A-OK going through half of a revolution with no weight on it whatsoever while on the exact same axis, a mirror arm that pulls against is totally going to be A-OK going through half a revolution with no counterbalance.