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Recent content by iaguy

  1. iaguy

    o-ring face groove tooling for .103 cross section

    We designed an o-ring face groove for a .103 (inch) cross section diameter o-ring. The design groove width was in the range of .139 inch. But now I see that tooling is almost non-existent to machine this size groove (remember face seal.) Does no-one use this size o-ring for face seals? I see...
  2. iaguy

    DIN 5480 spline Data

    thanks, guys, I had already purchased 5480-1 and 5480-15 (not finding the data), now I will be placing my order for 5480-2. As lbmakem notes, I am working with an internal spline. Looks like standards are a cash cow for the DIN folks. All of this data is in B92.1 which is only 65USD.
  3. iaguy

    DIN 5480 spline Data

    I am utilizing a DIN 5480N40x2x30x18x9H spline. Where do I find the spline data for the: Base Diameter, Major Diameter, Form Diameter, Minor Diameter , and the: Circular Space Width Max Actual, Min Actual, Max Effective, Min Effective. I looked for...
  4. iaguy

    over running load on electric motor

    No, electricpete, there is no load per se on the electric motor. The inertia of the hydraulic pump (minimal), and pumping of small amounts of hydraulic fluid (20 gpm) under very low pressure (300 psig) are all the loads that would be present. A 150 hp motor probably wouldn't even know there...
  5. iaguy

    over running load on electric motor

    I think I need to clarify. I want to use the electric motor to drive a hydrostatic transmission. This transmission would be a variable speed drive to my load. It has two states: "ON" which would accelerate my rotating load to speed and hold the speed for a few minutes; and "OFF" which would...
  6. iaguy

    over running load on electric motor

    I have an application where I want to start a large inertial load, run it for a few minutes then stop it using the electric motor. The startup cycle is a constant torque cycle going from 0 to 220 hp in six seconds. The torque goes from 0 to 9202 in-lbf in the same six seconds. The load then...
  7. iaguy

    Gears to use for education / visualization

    there are suppliers like Boston who sell small gears in steel, aluminum & plastic that would make good display sets.
  8. iaguy

    EN10029 specificaton

    What does the G3 indicate in EN10029-8-S355JRG3?
  9. iaguy

    help me choose

    You should also look at CoCreate. They are not cheap, but they have good modelling accuracy and export models to FEA and have their own FEA addin. Budget 10-20 K$ for software plus another 2K per user for training. You can get away with a pretty cheap computer now, not like a few years ago...
  10. iaguy

    Drawing an involute spline

    Back - way before - we had cnc stuff, spline and gear tooling was made by using 3 or 4 arc to approximate the spline. Even in the early 90s I was getting tooling for gears and splines that were created that way. Finding the radii of the arcs is no hill for a climber. iaguy
  11. iaguy

    How to use grep command????

    I think you might have better results if you use awk. The man pages aren't so good for awk. See O'Reilly's book on SED & AWK.
  12. iaguy

    download

    check the GNU home page. Also another post here had 4 or 5 sources listed.
  13. iaguy

    V-Twin and V-4 motors

    Greg, I have worked with an I3 before and it was very well balanced. I have not done engine balancing since the late sixties, but I remember that 3s and 6s were very easy to balance. Do I not correctly remember?
  14. iaguy

    Where does "Mil" come from

    I'm not so sure that the monetary rate that Massey describes is obsolete. My property tax rate is in mils/dollar value.
  15. iaguy

    Vehicle Duty cycle and Gear Programs

    You get your duty cycles by measuring your product in the field. You instrument the product, or inspect the wear on used product / prototypes. You could guess that other products have the same duty cycle as your product - but if you don't compare the product results how do you know??? L
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