# 1.25m Engine Lift Tests!

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I wondered how much a given engine could lift, so with the help of Kerbal Engineer I was able to calculate, minus the weight of each engine itself, how much they could lift at a 1.00 minimum TWR. I plan to do .625m and smaller engines next, then move on to 2.5m and then 3.75m as well, that is, if you guys are interested

Here's the first set:

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Thanks! You should do comparisons between 1.25m clusters and 2.5m single engines.

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A thing I learn in KSP is you can lift about 0.1 * thrust in ton (a vessel with 50 kN of thrust can lift about 5t not more, itself+propellant included).

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A thing I learn in KSP is you can lift about 0.1 * thrust in ton

Specifically with (force in newtons) you can lift (acceleration due to gravity) * (mass in kg).

Replace newtons with kilonewtons and kg with tons if you prefer, the result is the same

IIRC Kerbin has the same 9.81m/s/s of gravity that Earth does. Allowing 10kN/ton will give you just enough thrust to actually move; at 9.81kN/ton you're able to maintain altitude, but no more.

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Thanks! You should do comparisons between 1.25m clusters and 2.5m single engines.

Good idea, I'll try that! It might get kinda complicated, tho... :/

Hey, by the way, I'll post a different thread on this later, but I figured out a really good way to organize your crafts.

You'll notice I had my test rockets named "Experimental - ____________", well I figured out I could categorize all my crafts this way, with tags like Experimental, Station for station pieces, Lander, Base, etc. Also, I have Recreational and Indev tabs, which, recreational being just kinda like, a roleplay thing or a replica, and Indev is something In Development, so I know where to look when I wanna work on a certain craft. I also went into the save file and disabled stock vessels, they clutter up the list, especially when it's alphabetical.

Hope that helps!

-Slab

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For some reason, KER is not accounting for thrust/isp loss at low atmosphere. The LV-30 might go to orbit alone, but I don't think the LV-909 can.

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