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  1. Alternate around Chicago

    Lake Michigan Fast Ferry shortcut - Lake Express High Speed Ferry

    Or follow I94 down to I80. Take that I39.

    Tom
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    My biggest concern is the condition of the tank...

    My biggest concern is the condition of the tank and plumbing. If I remember, the tank is pressurized. Have it pressure tested.

    Tom
  3. If, as I stated, the starter is completely...

    If, as I stated, the starter is completely contained, then use line voltage control. Change the coils if necessary.

    Tom
  4. Sigh....:rolleyes5::sleepy: Tom

    Sigh....:rolleyes5::sleepy:

    Tom
  5. This article covers it all. Utility frequency...

    This article covers it all.

    Utility frequency - Wikipedia

    Tom
  6. So why 50, 40 and 25 Hz? Tom

    So why 50, 40 and 25 Hz?

    Tom
  7. No, not an air breather. Second photo, middle...

    No, not an air breather. Second photo, middle cylinder you can see different lobs on the cam. Interesting valve chest.

    Tom
  8. Thermite, you come from an entirely different...

    Thermite, you come from an entirely different world than industrial electricals. What you say for the low voltage stuff is great for the telecommunications field, but it caused havoc with the...
  9. The problem with 24 volt is the size of the...

    The problem with 24 volt is the size of the transformer needed and fidelity problems with the controls.

    Tom
  10. The neutral is not normally carried with the...

    The neutral is not normally carried with the three power leads in three phase industrial applications. In all cases I have seen like this a transformer is used. In home use you can do pretty much...
  11. The rule is if the control circuit wiring leaves...

    The rule is if the control circuit wiring leaves the enclosure, then the voltage is 120 or less. If the control circuits are entirely within the enclosure, then line voltage control, i.e. 240, 480...
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    Stainless would work as well and a lot less...

    Stainless would work as well and a lot less potential problems

    Tom
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    For 480 volt applications, I would think the caps...

    For 480 volt applications, I would think the caps would at a minimum be rated 720 volts or higher. I might be cheaper to add a transformer to a 240 design. However, my 480 volt rpc has been...
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    I guess the issue that I have is the assumption...

    I guess the issue that I have is the assumption that increasing the voltage rating linearly increases the current handling and hence, the power dissipation.

    I don't think any of us knows enough...
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    You offer some interesting thoughts that I will...

    You offer some interesting thoughts that I will compose my reply offline as it will take awhile. In the mean time, what is ESR?

    Tom
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    Sorry, but the impedance of a capacitor is...

    Sorry, but the impedance of a capacitor is strictly a function of capacitance and frequency. Voltage comes into play for the withstand of the dielectric. Heating comes from the internal resistance...
  17. Thread: What is it?

    by TDegenhart
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    A very expensive paper weight Tom

    A very expensive paper weight
    Tom
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    Carburized 8620 would work as well and would be...

    Carburized 8620 would work as well and would be tougher.

    Tom
  19. Copper is not the best material in fatigue...

    Copper is not the best material in fatigue resistance. Either allow it to float or completely rigidize it.

    Tom
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    Educate me. What the motor run caps used in...

    Educate me. What the motor run caps used in PP's, paper, electrolytic, or what? If electrolytic are they two dc caps back to back? What is the failure mode? What causes the failure? Of course we...
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    The issue is that sanding, filing or whatever is...

    The issue is that sanding, filing or whatever is totally unnecessary for power contacts. All that is done is remove life from the switch. There is no advantage. If it titillates your whatever,...
  22. Just for the record, there is also open and...

    Just for the record, there is also open and closed transition. Open transition totally disconnects the motor during the switchover time. The motor field looses sych with the line, resulting in...
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    The issue I see here is that performance is based...

    The issue I see here is that performance is based on the capacitors. I am not familiar with PP's, I haven't seen a diagram or description of how they work.

    SND you want to spend money of test and...
  24. AS did this old man. Tom

    AS did this old man.

    Tom
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    When I worked on the bench back in the 1950's we...

    When I worked on the bench back in the 1950's we had a contact cleaner that was used to clean up carbon pots, socket, connectors, whatever. Don't remember much about other than it creamy and boy did...
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