3.36 tons for a round trip on the moon (no cheats).

#53
Apple's devices have better performance. MUCH better.

No.
If you stretch an engine you'll have the double TWR and fuel consuption, for the mass of only one engine. That's why Its cheating.
I managed to get to and from the moon without the engines stretched, that is, 4.26 tons, what do you think?
 

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