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  • Users: ggarnier
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  1. ggarnier

    Backpressure on domestic heating/cooling systems

    I am familiar with the concept that it is risky to close too many room outlets in a house in an attempt to concentrate heating/cooling effects where the people are. Now that I am living in a house with a seriously under-sized furnace/AC, I'd really like to be able to do this, but without...
  2. ggarnier

    Unbalanced part size in family mold

    Over the years I accepted on faith that trying to have parts of quite different size/geometry together in a family mold is a bad thing. Recently I began to wonder "Why?". Which part suffers? (The big one/little one/both?) In what way do problems manifest themselves? The most obvious...
  3. ggarnier

    Fineblanking in a tube wall

    I am designing a bayonet joint between two pieces, like an automotive taillight bulb/socket, except "inside-out". That is, the pins are in the "socket", engaging features machined into the "base of the bulb". In the past I have used pressed-in dowel pins in the...
  4. ggarnier

    Torque vs. clamping force

    Is there any place to find data on fastener torque vs. clamping force? Specifically (I'm embarassed not to have an intuitive grasp of this) if I get P# force with a fastener of one size at T ft-# torque, will I need more (or less) torque with a larger fastener to get the same P clamping force...
  5. ggarnier

    Forcing a curved beam flat against a rigid surface

    Problem: Pre-curved beam, radius of elastic curve constant (r &gt;&gt; thickness), like one leaf of a truck spring.<br><br>Rest concave side up on rigid surface (that is, resting at the center of its span, tangent, on the rigid surface.<br><br>Apply enough vertical force at the ends of the beam...
  6. ggarnier

    Cost of compressed air?

    Does anyone have either a figure for kWhr/scfm/degF or $/scfm/degF for compressed air?<br> <br> (Don't bother converting units - I can take care of that.)<br> <br> Pressure this is based on would obviously be useful too.<br> <br> Thanks,<br> <br> Gary Garnier<br> Raytek Corp.<br>
  7. ggarnier

    MathCAD sheet for calculating compressible flow

    Does anyone have a MathCAD worksheet for calculating the flow of gases in pipes? I do this so seldom, and units are so hard to keep track of that I don't really trust my calculations.<br> <br>
  8. ggarnier

    Need info: PG thread - German conduit thread standard

    I need info on a PG11 thread - major seems to be about 18.6 mm. I need minor and flank angle.<br> <br> Thanks,<br> <br> Gary Garnier<br> Raytek Corp.<br>
  9. ggarnier

    External-tooth retaining rings in metric sizes

    I am looking for subject part in metric sizes - for 6, 7, and 10 mm bores.<br> <br> For reference, Rotorclip TI series.<br> <br> Thanks,<br> <br> Gary Garnier<br> Raytek Corp. <br>

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