Lightest Craft to Orbit Quick Challenge ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ What is the lightest craft you can build that is capable of reaching orbit? ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Rules: A Periapsis above 70k constitutes as capable of orbit.
No Debug Cheating, though Part Clipping is aloud.
No Kraken Drives or similar methods of propulsion.
No Lithobraking unless a part of the intended design.
Neato. You made me step up my game, though; I have now managed it on two Oscar-Bs.
My innovation here was to action-group the crossfeed through the decoupler. This let me get a tank and a half of fuel to the Spark and half a tank to a single Spider engine that I center-mounted on the second stage, while keeping the upper tank as full as possible until needed, for aerodynamic stability. I also moved the battery to the lower stag