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  1. Homework?

    Homework?
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    Kelly, Agreed. Joe

    Kelly,
    Agreed.
    Joe
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    Drawing standards are great, and valuable, but if...

    Drawing standards are great, and valuable, but if they are not clearly understood by both the creator and the user unfortunately they can be just another source of confusion. I don't know the...
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    I don't understand what "true position of zero"...

    I don't understand what "true position of zero" means. Can you post an example?
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    My comments are based on assumptions I'm making...

    My comments are based on assumptions I'm making on from the very limited view of your design that you have provided.

    Your shaft support should be rigid enough to absorb the side or bending loads...
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    The shaft supports you're using are not designed...

    The shaft supports you're using are not designed for a thrust load. In fact I don't think their surfaces supporting your thrust bearing are even truly perpendicular to the shaft. Plus they are...
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    Three questions: (1) As Hudson pointed out, one...

    Three questions: (1) As Hudson pointed out, one would expect to see the clutch on the high-speed, low-torque input shaft. Why isn't it there?
    (2) Normally gears in a reducer like this operate in...
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    From what I see there you have an input shaft in...

    From what I see there you have an input shaft in the upper left driven by a flexible coupling. The driver gear on the input shaft engages with the driven gear on the output shaft. The driven gear...
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    Upon encountering the water the air forms bubbles...

    Upon encountering the water the air forms bubbles and rises to the top surface of the water. How is the air "pushing" the water anywhere? Unless there's enough airflow to overwhelm the water with...
  10. Study the workings of a differential gear set...

    Study the workings of a differential gear set used on automobiles. Its a pretty amazing innovation. A variation of that arrangement might work for you.
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    I've read your question four times and have no...

    I've read your question four times and have no idea what you're asking. A diagram would help.
    The air is "lifting" the water? From above? Huh?
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    All the calculators you need to answer your...

    All the calculators you need to answer your question are on this website.
  13. A question: When the plaintiff's attorney in the...

    A question: When the plaintiff's attorney in the human injury lawsuit from the accidental death in which your ambulance was involved has you on the stand and asks you how you got your engineering...
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    If your winch is driven by a worm gear reducer it...

    If your winch is driven by a worm gear reducer it might be self-locking, which means it won't move either direction unless powered by the motor. Do you wish the load to "free-fall", or can it just...
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    Unless I'm reading this incorrectly it appears...

    Unless I'm reading this incorrectly it appears that you are looking for a rating that normally does not appear on rotary ball bearings, a max moment load. At least I do not recall seeing such a...
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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....
  17. 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.
  18. 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...
  19. 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".
  22. 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...
  23. 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...
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