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    The type of bearing you're using is not intended...

    The type of bearing you're using is not intended for this type of application. It is intended for mainly radial loads with lesser thrust loads. In this case the thrust loads are the primary forces....
  2. Yes I do. You don't have the time. "Been there,...

    Yes I do. You don't have the time. "Been there, done that".
    hang around this forum for some interesting reading. Kelly does a great job of running it.
  3. From 40+ years down the road in front of you:...

    From 40+ years down the road in front of you: Grades and internships will open the first doors for you - but that's all. After that, it is only your experience and competence that will open the...
  4. Thread: Cantilever gate

    by jboggs
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    Post a diagram. Explanation is unclear.

    Post a diagram. Explanation is unclear.
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    Sounds like your problem is bureaucracy and red...

    Sounds like your problem is bureaucracy and red tape, not engineering.
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    What Kelly said - "acceptable alternates".

    What Kelly said - "acceptable alternates".
  7. Thread: Rotating drum

    by jboggs
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    Without gravity the force on the top and bottom...

    Without gravity the force on the top and bottom will be a result of the pressure of the water in contact with them. That pressure will be created by the centrifugal force the water experiences. It...
  8. Thread: Rotating drum

    by jboggs
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    If you're ignoring gravity their both wrong. ...

    If you're ignoring gravity their both wrong. Without gravity there would be no liquid at the bottom. The hole in the middle would go all the way from the top to the bottom. A perfect cylinder.
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    "energy is always conserved but can be changed...

    "energy is always conserved but can be changed from one form to another"
    Yes but... That transition always includes losses in the form of waste heat. So, its never 100%. That's where the term...
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    You're getting into an area where details and...

    You're getting into an area where details and specific terminology matter. For example you mention "strength", "power", "energy". These terms all have very specific meanings, and are not the same...
  11. I would examine the options available for...

    I would examine the options available for automatic chucks on lathes. They engage and disengage cylindrical surfaces all day long. Maybe some sort of segmented tapered wedge arrangement like an...
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    I thought of a reel too, but assumed the voltage...

    I thought of a reel too, but assumed the voltage and current would be a killer on that. But I'm not an electrical guy. I would call some reel manufacturers and find out. You would still have to...
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    You should consult some of the major...

    You should consult some of the major cable-carrier manufacturers, like Gortite, Kabelschlepp, or others, just to see what they have that might work. There are many options out there. You might also...
  14. Agreed. You will find that the older engineering...

    Agreed. You will find that the older engineering disciplines (mechanical, electrical, civil) are also the most diverse as far as job opportunity.
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    Thick enough and big enough to carry your...

    Thick enough and big enough to carry your anticipated loads. But not so big as to be too heavy.

    Solved.

    Next question?

    Seriously, maybe you thought you were asking a simple question. You...
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    Can you post a link to the video? Your...

    Can you post a link to the video? Your description can be interpreted different ways.

    Also, the gold standard on the topic is:
    Mechanisms, Linkages, and Mechanical Controls by Nicholas Chironis...
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    If the system requires more torque now than in...

    If the system requires more torque now than in the past, something is changing. What's changing? The number of pinion gears did not change, so how will increasing the number of pinion gears solve...
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    Also - speaking in broadly generic terms, at...

    Also - speaking in broadly generic terms, at least in the US, if somebody wants to sue you or the company for anything at any time, they can. Doesn't mean they will win, but they can sue.

    Others...
  19. H:W No homework allowed.

    H:W
    No homework allowed.
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    Its a simple lever. Sum of moments about the...

    Its a simple lever. Sum of moments about the lower bolt centerline = zero.
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    I feel your pain my friend. I've been on the...

    I feel your pain my friend. I've been on the engineering side for several decades, and I can tell you - just like most professions, we have more than our share of sloppy engineers. Everything I...
  22. Just to be a contrarian (if that's a word), I use...

    Just to be a contrarian (if that's a word), I use the square symbol in a few cases. When the intent is clear (can't be misinterpreted) and the drawing is already very busy, the square symbol can...
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    Speaking for myself, and based on my 45 years of...

    Speaking for myself, and based on my 45 years of experience, GD&T is just a tool, among many, that engineers use to communicate their thoughts to others in a three dimensional form. And just like...
  24. Since you're wanting to DIY this thing, and...

    Since you're wanting to DIY this thing, and you're not sure what technology to use or even where to start, I would suggest you use the engineering approach. Try to identify the 3 or 4 main key...
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    There is no "best way" to dimension a part unless...

    There is no "best way" to dimension a part unless you know how it should mate and function with other parts, how it will be made, and how it will be checked. Example, I've had maintenance folks...
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