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Type: Posts; User: jboggs

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    Well sorry, but the phrase "looking for an...

    Well sorry, but the phrase "looking for an element of patentable novelty" does seem to infer that one is desiring to achieve a patent. I'm trying to understand why one would intentionally not use a...
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    No need to remove yourself. Hang around. There...

    No need to remove yourself. Hang around. There is always more to learn.
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    What he said!

    What he said!
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    In a way you just answered some of your own...

    In a way you just answered some of your own questions. You said the instrument displays "Nm". That is a different animal than "N". One is a unit of force. The other a unit of torque. And there...
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    A force of 7N applied at the center is simply a...

    A force of 7N applied at the center is simply a force of 7N. Force has a linear direction and a single location. A rotary force is a torque. And torque is always expressed in terms of force @...
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    The key to failure analysis is to identify the...

    The key to failure analysis is to identify the very FIRST point of failure, the initial crack, and why it failed AT THAT POINT. Many times we find a "stress concentrator" at that point, usually in...
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    I don't understand your question - "How to...

    I don't understand your question - "How to machine it?".

    Are you saying you don't understand the machining steps involved to create the various parts? If that is the case then get advice from a...
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    "I'm not sure whether I would get a smooth and...

    "I'm not sure whether I would get a smooth and accurate surface from a tube with an inside weld seam".

    You have your answer from Kelly:
    "ID of pipe smaller than required on build then drill/ream...
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    Have you built prototypes? Did they work well? ...

    Have you built prototypes? Did they work well? Go from there, one step at a time.

    I doubt that this is the place to get all your engineering and process information for the successful...
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    When I read the word "piston" I assume some fluid...

    When I read the word "piston" I assume some fluid or air will be involved. I also assume you will want the piston to seal against the walls of the cylinder and not leak as it moves. If that is...
  11. You said you calculated the moment created by a...

    You said you calculated the moment created by a 500# load at the corner 40" from the center (1667 ft-lb) but didn't know what to do with it. Well, first thing, it's "ft-lb", not "lb/ft". There's a...
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    Well you're in the right neighborhood, but wrong...

    Well you're in the right neighborhood, but wrong address I think. The ONLY review on that item is not pretty. The product itself might be fine but there are no guiding instructions etc to help a...
  13. Thread: Lead screws

    by jboggs
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    Homework question?

    Homework question?
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    You are looking for a flow divider. There are two...

    You are looking for a flow divider. There are two types that I know of: proportional and gear or rotary. My experience with the proportional types has not been good. (They were probably...
  15. 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...
  24. 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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