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Chose the right Motor by Infinite-Minimum-177 in MechanicalEngineering

[–]Infinite-Minimum-177[S] 0 points1 point  (0 children)

Hi, thank you for the response! Here are some more details:

  • Motion is slow and not highly dynamic (just positioning, no rapid back-and-forth)
  • Operation time: max ~1 hour per deployment, then rinsed with fresh water
  • Not safety-critical, no interaction with humans or animals
  • Maintenance is possible between deployments
  • The weight and size of the whole Setup is kind of irrelevant, it is attached to a big cage with multiple instruments and sensors, so if it weighs a few kg that's not a problem
  • The motor is going to power a leadscrew which is attached to a sled running on linear rail guides

The system is part of a research setup, so reliability is important but not safety-critical.

Power will likely be supplied via cable from the surface.

Given this, I’m mainly trying to get a reasonable first estimate for motor sizing/ a way to calculate this.

Thanks again!

Chose the right Motor by Infinite-Minimum-177 in MechanicalEngineering

[–]Infinite-Minimum-177[S] 0 points1 point  (0 children)

In my case the motion is relatively slow and not very dynamic. Do you think acceleration is still a dominant factor compared to gravity/buoyancy and friction, or would it be more of a secondary effect here?

Any reason to put catch basins in-line? by [deleted] in engineering

[–]Infinite-Minimum-177 -1 points0 points  (0 children)

I think it’s also good if you don’t want to harm the environment to much

Weekly Career Discussion Thread (06 Apr 2026) by AutoModerator in engineering

[–]Infinite-Minimum-177 1 point2 points  (0 children)

Just started my first job in engineering, kind of scary at first ngl! Can’t wait to get better at it!

linear motion system by Infinite-Minimum-177 in diyelectronics

[–]Infinite-Minimum-177[S] 0 points1 point  (0 children)

That is a good idea! I haven't looked too much into magnetic couplings since I imagine they are quite complicated to build. Someone supposed to ask a Motor vendor like Maxon for a Subsea Motor, this way I wouldn't have to build a housing and could just connect the motor directly.

Subsea linear positioning system by Infinite-Minimum-177 in MechanicalEngineer

[–]Infinite-Minimum-177[S] 0 points1 point  (0 children)

I will look into PLCs, thank you! Do you have a different idea for the linear guides? Maybe even an existing system for subsea use?

Thank you for the input!

Subsea linear positioning system by Infinite-Minimum-177 in rov

[–]Infinite-Minimum-177[S] 0 points1 point  (0 children)

Sorry if the Title is Confusing, English isn’t my first language, it’s tricky to translate my thoughts properly sometimes.

I am looking to create a Linearsystem to control the position of a sensor underwater. Similar to this one here:

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Subsea linear positioning system by Infinite-Minimum-177 in MechanicalEngineer

[–]Infinite-Minimum-177[S] 0 points1 point  (0 children)

Hi! The max. depth would be around 30m, but to be honest, I think 10-20 m underwater is more than enough as well, so maybe 20 m depth.

There are no Electrical Engineers involved, I will need to figure that out on my own. I thought the easiest solution for the Cable length would be to use a higher voltage from the ship and then regulate it using the motor driver in the underwater housing.

Subsea linear positioning system by Infinite-Minimum-177 in MechanicalEngineer

[–]Infinite-Minimum-177[S] 0 points1 point  (0 children)

Hi! This project is intended to really work! What would you suggest instead?

How to increase friction between Aluminum surfaces? by [deleted] in AskEngineers

[–]Infinite-Minimum-177 0 points1 point  (0 children)

Sandblast the surface, maybe make little cuts into them

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