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Type: Posts; User: jboggs

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  1. Replies
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    Post a diagram. That will help.

    Post a diagram. That will help.
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    I check it at least once a day.

    I check it at least once a day.
  3. Thread: electric motor

    by jboggs
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    223

    Homework?

    Homework?
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    Flywheels are like batteries. They store energy...

    Flywheels are like batteries. They store energy but do not produce it.
  5. I'm not a Powerpoint expert but I would think...

    I'm not a Powerpoint expert but I would think that if Word allows you to create form letters in which data like names, addresses, etc. are extracted from a database, then Powerpoint might allow the...
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    A hydraulic accumulator is typically used either...

    A hydraulic accumulator is typically used either to absorb temporary peaks in pressure in a hydraulic circuit (thus preventing damage to other components) or to prevent temporary dips in pressure in...
  7. Thread: Spur gear?

    by jboggs
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    1,160

    I agree with Kelly. I don't think its an...

    I agree with Kelly. I don't think its an off-the-shelf gear. From the photo it looks like it is custom made for that particular product. You could try the switch manufacturer, or whoever owns them...
  8. Thread: Spur gear?

    by jboggs
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    1,160

    Have you identified whether it's metric or...

    Have you identified whether it's metric or imperial (inch) standard?
  9. Thread: Spur gear?

    by jboggs
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    1,160

    Where have you looked?

    Where have you looked?
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    I feel your pain. Like you, I am a mechanical...

    I feel your pain. Like you, I am a mechanical engineer specializing in machine design. I followed my father into the field. He was the inventor of the fiberglass extrusion process, called...
  11. Thread: Job Hunting

    by jboggs
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    Speaking from the other end of the career road:...

    Speaking from the other end of the career road: Widen your options. Don't restrict yourself. There are LOTS more fields out there than aerospace. In fact, "aerospace engineering" could be...
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    As I suggested in the other forum in which you...

    As I suggested in the other forum in which you posted, buy a fully threaded bolt. They're available lots of places (McMaster. Fastenal) and are not expensive. No need to change anything, and its...
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    A picture is worth a thousand words. Post an...

    A picture is worth a thousand words. Post an image of your arrangement and forces. Your last statement just thoroughly confused me.

    If you install a bearing type that is rated for both radial...
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    Maybe you could use some of that money you're...

    Maybe you could use some of that money you're supposedly "saving" by having the work done in China to get in touch with a more local manufacturer who might cost more up front but would also feel some...
  15. Our city hosts an annual high school competitive...

    Our city hosts an annual high school competitive robotics competition as part of a worldwide program. As a long-time adult team mentor and chair of a local support group, I have been a frequent...
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    One of the many lessons from my decades of...

    One of the many lessons from my decades of engineering is this: Use set screws with caution. They are very often misused and end up damaging other components and failing.

    Look at your first...
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    I have been in machine design for over four...

    I have been in machine design for over four decades. I will admit there are a lot of things out there I am unfamiliar with, but I have never even heard of a so-called "coil thread". I am, however,...
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    I have dealt with a number of special bevel gears...

    I have dealt with a number of special bevel gears over the years, and I haven't seen any of your calculations. That said, my first impression of the picture is that whatever factors in your...
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    There are cabinet door hinges that do that. They...

    There are cabinet door hinges that do that. They connect the door to the frame in such a way that when the door opens it pivots about a centerline that is outside the physical boundary of the hinge...
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    I think your problem is probably the location of...

    I think your problem is probably the location of center of rotation. If the centerline of your pivot point is above the red floor then the bottom corners of the two opposed green shells are going to...
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    We might be able to help if you could draw it out...

    We might be able to help if you could draw it out to scale.
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    The drawing could use much improvement. Most of...

    The drawing could use much improvement. Most of the lines looked like object lines to me. None of them looked like hidden lines or tangent lines. Based on the arrangement of the lines in the left...
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    That's a very open-ended question with very...

    That's a very open-ended question with very little definition. What have you tried? Why didn't it work?
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    What is your question?

    What is your question?
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    Back in the day engineers used mechanical...

    Back in the day engineers used mechanical indexers to drive dial indexing tables for all kinds of automated assembly processes. I used Camco indexers on several successful projects. Like these:...
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