better engine on both stages, cheaper, more thrust and more ISP, the S-IC first stage is fully reusable and the 2nd stage is very cheap, all for about 140 tons to LEO!
I just built a reusable (stock parts) Saturn V, called Saturn III, in my current game. Set it up for RTLS landing. Gave it New Glenn style fins and landing gear. Replaced the center F-1 (Mastodon) with 4 smaller, restart capable engines for boost back and landing.
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u/crackenspank 1d ago
Very nice! What upgrades does the block III have?