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  1. FM44

    Worst Case Tolerancing

    monkeydog/vims, Thank you for your help. Even though the assembly is more complicated and I just presented it in simplest terms, just to understand the basics. I should be able to take it from here. I appreciate your time and help. Farid
  2. FM44

    Worst Case Tolerancing

    monkeydog, I appreciate your help. From this point onward, I am assuming, I should pick such a range of tolerance that there will always be some clearance between the mating features. Right? Thank you. FM44
  3. FM44

    Worst Case Tolerancing

    Hi, Can any one, please, answer the following question in laymen terms: - if I am doing a simple "worst case" tolerance analysis, how many pairs of the extreme dimensions do I consider? example: I have a pair of bayonet hooks (plastic part), which are 2.00 inches apart.(with +/-.01 tolerance...
  4. FM44

    How do I ?

    Thank you ALL, Robointern, Timelord, unclesyd, and Mike Halloran, for your replies. I will take your advise and use a combination of worm and spur gear for raising and lowering a 20 Lb weight. All action is manual and very slow speed. I am using the worm screw to simply give me a constant...
  5. FM44

    How do I ?

    Hello, Can any one, please, help me with the following series of questions: 1) can I use a set of worm and worm gears (both plastic) for an adjustable arm, which will support a load at the other end (T=300 In-Lb) ? 2)Can a worm/worm gear move in reverse ? (The screw might be required to rotate...

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