Design of a Lightweight Waterproof (IP 67/68) Winch

AI Thread Summary
The discussion focuses on designing a lightweight waterproof winch system, with a weight limit of 10 lbs and a maximum force rating of 500 lbs. The user expresses difficulty finding suitable electric winches that meet these criteria and highlights the impracticality of using a hand winch due to the need for automation and precision. There is a debate about whether the project is a school assignment, with some participants insisting it is a design strategy question rather than homework. The conversation also touches on the challenges of coupling a motor to a hand winch and achieving consistent performance underwater. Ultimately, the user seeks recommendations for small-scale IP-rated winches or methods to automate a hand winch effectively.
Daniel Sadlier
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Hello,

I am currently designing a lightweight waterproof winch system using off the shelf electrical or hand winches.

My problem is that most electric winches that are waterproof are too heavy (design weight limit ~10lbs) and have a much higher force rating than needed (design max force ~500 lbs).

A hand winch could be used, but the process needs to be automated and it will probably take too long to couple it with an appropriate sized motor an enclose it in a sort of pressure housing.

Does anybody have an idea where I can find small scale IP rated winches? Or have any easy way to automate a hand winch?

Thanks!
 
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Daniel Sadlier said:
A hand winch could be used, but the process needs to be automated and it will probably take too long to couple it with an appropriate sized motor an enclose it in a sort of pressure housing.
What's wrong with just using a hand winch? I keep a hand winch in my Suburban that meets your specs.

This looks like a schoolwork project, so I'll move it to the schoolwork forums...
 
Can you not. Your speculation is incorrect and you just buried this thread.

As I said, the process needs to be automated as a hand winch can't consistently deliver results within +-5mm.
 
Daniel Sadlier said:
Can you not. Your speculation is incorrect and you just buried this thread.

As I said, the process needs to be automated as a hand winch can't consistently deliver results within +-5mm.
Say which what? There may be a language barrier here, but you can please say more about why a hand winch will not work. You will not be able to put an appropriate size electric motor on a winch within that weight limit. What does "automated" mean in your post? Again, there may be a language translation issue with that word. :smile:
 
A simple google search of brushless dc motors gives results of 1 kW motors of ~2-3 lbs. To automate something is to control it (passively or actively) electrically using a computer. As I said, again, a hand winch can't consistently deliver results within the tolerance and unless you plan on hand cranking the winch 1.5 meters underwater, hence the IP rating, it is quite impractical as well.

Can you please move my thread back to it's rightful place?
 
Daniel Sadlier said:
Can you please move my thread back to it's rightful place?
Sure. Why is it not related to school?
 
It isn't a school project nor is it a homework problem... The intended audience is also not students or tutors.
 
Daniel Sadlier said:
It isn't a school project nor is it a homework problem... The intended audience is also not students or tutors.
That doesn't answer my question. Why are you being evasive?
 
Because I have no intention of giving out details of my project other than the question I am asking. It's the other version of IP. Why are you moving people's threads without reason anyway? You're logic of moving the thread without any knowledge and then asking why you should move it back is equivalent of presuming somebody is guilty of a crime and then trying them for their innocence.

Either way, you've ruined this thread.
 
  • #10
Because we have to deal with students trying to cheat on their homework. All schoolwork-type threads go in the Homework Help forums, and must use the HH Template when posting. You have offered no evidence that this is for anything other than schoolwork, so that's where your thread goes.
 
  • #11
Besides, you get great help in our HH forums as long as your show effort. Post what you have found so far. What are you having trouble with?
 
  • #12
How does this sound in any way like a homework problem? It is strictly a design strategy/component sourcing question.

Do you go around to every question and move it to homework if they don't offer video evidence of their project?
 
  • #13
Daniel Sadlier said:
How does this sound in any way like a homework problem? It is strictly a design strategy/component sourcing question.

Do you go around to every question and move it to homework if they don't offer video evidence of their project?
Yep. What is your design project for? Can you post links to it? Why are you being so evasive? Why don't you just use a hand winch like I have in my truck? It is under 10 pounds, and can pull the weight you specified. Short leash, son.
 

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