Recent content by Osvaldo

  1. Osvaldo

    Journal Bearings Clearance Calculation

    jrmichler I was looking for advise from experienced people in the Mechanical Engineering area of journal bearings. Your post is not only unuseful but also improper. If you do not have the required experience, keep your advise for your self. I appreciate the other post the at least try to help.
  2. Osvaldo

    Journal Bearings Clearance Calculation

    Baluncore: Input RPM are 22300. The gas turbine is a Solar one. Do not know model. The gear reducer is driving a split multistage centrifugal pump.
  3. Osvaldo

    Journal Bearings Clearance Calculation

    Below the reply to the questions posted about the equipment. 1. Lubrication is by a pressurized system 2. The gear reducer is Westech model 301-3 S/N 3302 Solar P/N 50583-8 3, This is a rebuilt reducer. 4. At this time, getting parts from abroad is very difficult, and so repair if of utmost...
  4. Osvaldo

    Journal Bearings Clearance Calculation

    Would need to know radial clearance, recommended viscosity of oil and babbit alloy of the journal bearings of a gear reducer of following dimensions and specifications: 1400 HP 22300 RPM input 6400 RPM output Journal diameter of input bearings 2 in, length 3 in, 2 bearings Journal diameter of...
  5. Osvaldo

    Max Compression & Reinstall of Spiral Wound Gaskets -Advice Needed

    Would need advise on which is the maximum allowed compression to apply to a gasket according to the thickness of the gasket. If this information is available from the manufacturers, would like to know. Also, if once used, the gasket can be reinstalled and which is the experience about that.
  6. Osvaldo

    Inserting Stainless steel blades into a Nodular Iron turbine diaphragm

    Would need some advise on how to prevent the blades from melting when pouring the nodular iron into the piece mold. If somebody has experience on the matter or can recommend literature that could help in developing a successful .
  7. Osvaldo

    Lubricate a Chain with Grease & Solvent?

    The reason for using the mixture instead of "boiling" the chain, is that I prefer to put few drops in every link in order to keep the outside of the chain free of any greasy mixture that could attract dirt.
  8. Osvaldo

    Lubricate a Chain with Grease & Solvent?

    Does it make sense to mix a petroleum solvent with grease in order to lubricate a chain so the mixture gets well inside the rollers and wait for the solvent to evaporate, leaving a film of grease within the chain components? Will this happen? Lube oils work fine but leave the chain after few...
  9. Osvaldo

    I Spacetime Curvature: Eliptical Orbital Paths & Keppler Laws

    Wonderful demonstration. Never saw it like the one in the video. Thanks a lot
  10. Osvaldo

    I Spacetime Curvature: Eliptical Orbital Paths & Keppler Laws

    Though it is hard not to believe in the spacetime curvature that cause planets to follow curved path arround massive objects, I wander how come these paths are eliptical, the object change velocity when moving arround the massive object and what is more obeys the Keppler laws. If there is not...
  11. Osvaldo

    I Circle tangential velocity approaching c

    Seems to be the merry go round was not a good example. Forget about it and the horses. Let us think what happens at he periphery of a neutron star with 2 marks at the Equator of the star and separated 1 km. In response to Dale, there are about 100 Million Neutron stars in the Milky Way that...
  12. Osvaldo

    I Circle tangential velocity approaching c

    Obviously am not proposing this thread to discuss the resistance of the material spinning at higher speed. My point is if I am stationary and I measure that 2 points in the mass-less rotating circle get closer is it because angle I measure shrinks or because the radius of the sniping circle...
  13. Osvaldo

    Understanding magnetic balance in AC induction motors

    The explanation of magnetic unbalance being caused by aerodynamic forces generated by cooling fans, makes a lot of sense. Then, in big motors, finding the magnetic unbalance seems to be only one way to find them: Testing. Running the motor at no load and measuring the displacement of the shaft...
  14. Osvaldo

    I Circle tangential velocity approaching c

    When a merry go rounds tangential velocity approach c, and horses look closer than when at rest, what is reduced, angular velocity or radius?
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