Falcon 1 was an expandable launch system developed and formerly operated by SpaceX. Falcon 1 flew on 5 missions which 2 of them were successful. The vehicle operated out of Ronald Reagan Test Site at Omelek Island, Kwajalein atoll. It was planned to use Space Launch Complex 3-W at Vandenberg Air Force Base but it was abandoned.
I recommend turning on "Advanced tweakables" in KSP settings.
Here are my other projects.
Falcon 1
Falcon 1 First Stage
Falcon 1 Second Stage
