I am trying to find out if the linear actuators (small, large and XL) have a fixed number of rotations on the bottom axle connector in order to extend them fully?

I am guessing the small LA will take fewer turns?

  • 2
    Does this answer your question? What's inside a linear actuator? Apr 28, 2023 at 8:36
  • Not really, but the video added does so thanks one and all Apr 30, 2023 at 12:35
  • I voted to leave this question open, I think LA's are complicated/interesting enough to have multiple (in my opinion unrelated) questions about them May 2, 2023 at 11:45

1 Answer 1


I found Sariels video here helpful:

enter image description here https://www.youtube.com/watch?v=A23yh-enhyI

Sariel states that all 3 LA's extend and retract at the same speed. Several sources state that the L linear actuator takes 26 revolutions to extend to its full 5 studs, so the small LA will take 15.6 revolutions to extend to its full 3 studs and the new XL linear actuator will take 41.6 revolutions to extend to its full 8 studs.

  • Thanks that's great info Apr 28, 2023 at 21:15
  • Glad they all seam to be 5.2 rotations per stud Apr 30, 2023 at 12:49

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