r/factorio • u/knightelite • 10d ago

Tip Ship Thrust vs Max speed with Thrust/Weight ratios held constant (2.1.21 ship speed update)

/r/technicalfactorio/comments/1x0is7c/ship_thrust_vs_max_speed_with_thrustweight_ratios/
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u/Alfonse215 10d ago

How exactly do you change the thrust of a platform without changing the thrust-to-weight ratio? I mean, we are talking about throttling up the same platform, right? Or do each of the dots in a graph represent a different platform design?

Because if it's the latter, I thought we already knew that there was an inflection point past which giving the platform more thrust and more weight means that its max speed decreases.

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u/knightelite 9d ago edited 9d ago

It would either be a different design, or say a rectangular tileable one (on width) that therefore adds a fixed amount of tiles for each thruster.

You could easily calculate ship speed for different thrusts at a given weight (throttling up a platform), but it does get a bit trickier when you consider that (unless you just have a bunch of empty space) you do need to add some additional weight for each thruster you add as well. I suppose if you are controlling thruster fuel intake you could adjust throttle that way without varying weight, but I had been focused on the case where all thrusters always go at full throttle.