Greetings friends! I'm in dire need of some advice/pointers regarding rocket building... I'm playing in career mode, and just unlocked that heavenly atomic engine that seems to consume almost no fuel at all <3 ... So my main issue, is the first stages of the launch, (I understand and use some concepts quite well like staging, coupling, aspargus'ing, etc...) but... before i clarify it better, pretty much my rocket doesn't seem to gain any decent speed (barely goes over the 120-150 m/s range) before passing the 30-36km barrier To sum it up: I was planning an aspargus system to go to Duna + Ike(duna moon, or am I mistaken?) + return, with 7x Rockomax jumbo-64 fuel tanks where the 6 outer ones had "Mainsails" on them... and a Skipper in the center for vacuum operations, then I had a landing -> return stage with just 1x "Poodle" strapped under 1 wide Rockomax X200-16... which i tweaked to the same rockomax x200-16 + 4x FL-T800 radially mounted. Then i faced a slight issue... it would burn my aspargus faster, and make a lot harder to push it up past beyond the mun. Now... my main problem arose when i tried to achieve a solution... Tried with 14x Kerbodyne S3-14400 tanks (7 + 7 on top) with the same exact aspargus system (6 outer + 1 center (x2 in length)) and tested with both... Kerbodyne KR-2L engines, or S3 KS-25x4 engine clusters... and guess what... with the KR-2L at least, i burn through the 3 outer aspargus stages just to get into orbit... (i actually reach orbit with about 75% fuel left) but i end up feeling like it's too few remaining fuel (?) i get there with about 2.5k - 3k Delta-V left, and it just feels too few fuel, what do you guys think? (my previous "weaker" aspargus used to reach orbit still with 3 fuel tanks, being that 1 was the central one at 100%, and the others around 25%) Also, just on a side-note... think 2x Atomic engines are enough to push up a 30~60k Ton Payload out of a regular (non-eve'ish) planet? You can check some of my projects here> Mkorny, and you can check all the info on the mechjeb screens that are up Since I'm currently at work am unable to add any pics, so i linked my profile with the details of one of my missions.