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  1. Replies
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    Interestingly, I got a look inside a "transwave"...

    Interestingly, I got a look inside a "transwave" converter (British). It appears to be a transformer only type, which surprised me. So they are in commercial production for shop use.
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    Overvoltage trip means the resistor is not...

    Overvoltage trip means the resistor is not effective enough to handle that amount of brake energy.

    There may be a parameter that adjusts the resistor duty cycle (resistor current, really). If so,...
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    The drop may not be large. When there is no...

    The drop may not be large.

    When there is no load, 80% or more of the low current may be reactive current (useless current). But under load, the reactive current does not change much, however...
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    It actually corrects PF on either, depending on...

    It actually corrects PF on either, depending on where put. If put on the pass-through, per your original question, it corrects the PF "looking into" the RPC. The "balance" capacitors correct the...
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    yes, that's what it does.

    yes, that's what it does.
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    Steelman method is the same idea in reverse. ...

    Steelman method is the same idea in reverse.

    Instead of creating 2 phase via the 90 deg phase shift and then converting to 3 phase with the Scott connection, the motor is converted to a 2 phase...
  7. I have a porta-power setup that came with a shop...

    I have a porta-power setup that came with a shop made setup made like that that they actually used for some sort of testing. Had the tension rods etc. I guess it worked fine, all I wanted was the...
  8. Yes. True.

    Yes. True.
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    Whatever..... The OP has the thing, and it...

    Whatever.....

    The OP has the thing, and it does what it does at the full 15 HP. I don't know much about filling scuba tanks and admit it cheerfully.

    But I DO know that with a smaller pulley...
  10. Standard deal for HF and the like to use a bottle...

    Standard deal for HF and the like to use a bottle jack. I guess they work..... The way that one is I have not seen as often, but that one looks locally built. Usually the bottle jack is inside the...
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    Many ways to skin that octopus. If using the...

    Many ways to skin that octopus.

    If using the pulley trick, make sure the lube will still be OK. That size may be pumped lube, splash lube may not work as well at a slower speed.
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    There is an explanation of how to set that up. ...

    There is an explanation of how to set that up.

    Logan Lathe Back Gears
  13. Replies
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    You don't even need to buy them with a particular...

    You don't even need to buy them with a particular power factor, synchronous motors can have the PF adjusted by changing the excitation, the current in the field coils.

    But that is a different...
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    Amps is what runs the motor. Voltage is just the...

    Amps is what runs the motor. Voltage is just the "push" behind the amps that causes the current to flow. So if the current in all three "legs" is equal, the motor should be well-balanced and...
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    50HP single phase irrigation pump motors can be a...

    50HP single phase irrigation pump motors can be a bit thin on the ground...... Baldor stocks up to 15 HP......

    I mean, YOU can GET them, but........

    Large Horsepower Single Phase Motors Up to...
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    yes, I "SAW" past the beginning of that, and...

    yes, I "SAW" past the beginning of that, and "DRILLED DOWN" to the part you refer to.

    That is not the sort of countershaft I have, I know about those. I have a legit 200, serial 12,xxx (Feb...
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    Ja, it is the long way around the barn, in some...

    Ja, it is the long way around the barn, in some ways. For a constant load pump motor a half mile from anywhere out in a field, it's a very decent solution, though.

    A BFH is not a solution to a...
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    That makes me very happy that my bench 200 has a...

    That makes me very happy that my bench 200 has a Southbend countershaft, probably from a 9" model C, all open and simple.

    I helped a relative clean up a regular 200 that had the fancy drive box....
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    The horsehockey ain't where you think it is........

    The horsehockey ain't where you think it is.....

    That 85% is perfectly possible. What you have is an effect of improving the power factor of the motor. Motors at full load can get to 0.6 to...
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    The clank is not unusual. Mine quiets down if...

    The clank is not unusual. Mine quiets down if loaded (during a cut).

    I have thought about messing with the pin system, but there are bigger fish to fry in the shop.
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    Quite reasonable considerations about flywheel. ...

    Quite reasonable considerations about flywheel. Similar to what I came up with.

    It's a balance......

    The generated leg is made by "generation" as the rotor, with its magnetic field, is...
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    Good eye. I thought it was the tan version of...

    Good eye. I thought it was the tan version of GPO, but it does look like wood. Not the best plan, although the moisture aspect is not that bad, the parts attached should all be insulated...
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    Here for your edjumification is some information....

    Here for your edjumification is some information. This type relies on the 90 degree phase shift mentioned above, but uses an autotransformer, which has been the traditional approach since the 1930s...
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    Actually, the ones I know about (might not be...

    Actually, the ones I know about (might not be THAT one), can produce, at one load point, a very nice balance.

    Two things...

    A capacitor can produce a phase shift of 90 deg.

    The shift in...
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    Not sure if you are a spammer or a legit...

    Not sure if you are a spammer or a legit poster.... likely a spammer, considering the insistence on a particular brand name, and post history.

    BUT......The transformer based type is perfectly...
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