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  1. Replies
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    A dental equipment manufacturer I did work for...

    A dental equipment manufacturer I did work for had a Dedtru for grinding the ODs of the little gears in right angle handpieces. One day they called me to help figure out why the gears would go...
  2. A good point I hadn't considered. We don't know...

    A good point I hadn't considered. We don't know if the approximately 1.7 volt peak is part of the system or simply tolerated and configured to affect both SCRs equally. I suspect the latter because...
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    Jim, I was thinking of the OP and customs...

    Jim,

    I was thinking of the OP and customs getting it into Canada, just phrased it poorly, but you would be welcome to a bit, also.

    Bill
  4. The AC from these transformers will have a peak...

    The AC from these transformers will have a peak either on the corresponding peak on the high voltage or the negative peak. The voltage from the transformers will be added or subtracted from the gate...
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    The guy I got my Sheldon R15 from was a strange...

    The guy I got my Sheldon R15 from was a strange duck. The lathe came with a jug of spindle oil in a compartment in the tail support, but he had it jammed up against a wall so he couldn't open the...
  6. I would expect them to work the same. The tubes...

    I would expect them to work the same. The tubes we were using came from a WIAD that the owner converted to an AC motor / VFD drive. The thyratrons were doing the same thing in both lathes. In any...
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    Here are a bunch of links for DTE 24. mobil...

    Here are a bunch of links for DTE 24.


    mobil dte 24 - Google Search


    A wood bench is a poor mount for a lathe. Wood does not damp vibration well and it changes with humidity so you never...
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    When I showed my new 6 jaw Buck to my girlfriend,...

    When I showed my new 6 jaw Buck to my girlfriend, I commented that if I wanted a three jaw chuck I could remove three. She said "But not all on the same side."

    Bill
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    I was aware of the rest of the story and possibly...

    I was aware of the rest of the story and possibly should have included more explanation, but what I said was true, not what I wanted to see. Haber's work on nitrates and zyklon B may well have been...
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    I briefly owned a 9" South Bend so I can offer...

    I briefly owned a 9" South Bend so I can offer some free advice, which is by definition worthless.

    A weak spot is the spindle running in the cast iron headstock, no bronze bushing, even. Keeping...
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    10,646

    Chlorine was the first gas used in WWI, suggested...

    Chlorine was the first gas used in WWI, suggested by Fritz Haber. Among his other triumphs were the Haber Bosch process that produced the gunpowder that made WWI possible and later he added to his...
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    I have been wondering if we are not seeing the...

    I have been wondering if we are not seeing the same effect seen at the reunification of Germany. Researchers expected to find that West German children would be healthier than East German becuse of...
  13. Personally, I consider most of this infantile,...

    Personally, I consider most of this infantile, but there was one that I thought was funny. The story goes that shortly after the Cadillac Eldorado went on the market, one would make a clunk sound...
  14. Once again, if the third phase voltage was...

    Once again, if the third phase voltage was correct but it only drew 1/2 the current, the phase angle was wrong. An oscilloscope would show it. A while back some people were having problems with a CNC...
  15. I photo shopped the images and rotated them as...

    I photo shopped the images and rotated them as well as tinkering with brightness and contrast. On my screen the letters appear chopped up but they print fine. In case anyone notices that picture 3 is...
  16. For most of my time in Webster Groves I have had...

    For most of my time in Webster Groves I have had a parking lot and an entrance to my building. The entrance is next to the property line and a building owned by a jerk who makes up his version of the...
  17. The problem with the Transwave is likely that it...

    The problem with the Transwave is likely that it uses a potential relay that isn't getting a high enough voltage to hold it in. Another video of limited value by someone who has no idea what he is...
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    When you say that two do not make contact, do you...

    When you say that two do not make contact, do you mean physically or electrically? Does the lathe still have braking? If not, I bet that it was disabled in the "conversion" and people stopped it...
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    There must be a problem with the travel since all...

    There must be a problem with the travel since all four are not likely to have worn to that point. See if the movement looks the same as the other contactor, if not, look for the cause.

    Bill
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    That isn't even a good one. Rusty and chipped...

    That isn't even a good one. Rusty and chipped glass.

    We better get back to the subject, So My Indian channel is off.

    Bill
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    You mean he wasted $1500 to some ripoff artist. I...

    You mean he wasted $1500 to some ripoff artist. I have repaired Corbin speedometers and others, including things like silk screening (really polyester screening now) dials. There is nothing in one...
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    With the power disconnected completely, press the...

    With the power disconnected completely, press the insulating crossbar near its center to actuate the contactor. Note that the contacts are spring mounted on this bar and should lift off it slightly...
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    One thing, to check the reverse function, first...

    One thing, to check the reverse function, first see if the contactor closes. This will be one in your third picture in post #5. Some of the contacts are really scorched and may not be making contact....
  24. That drive isn't anything Monarch made. Even the...

    That drive isn't anything Monarch made. Even the Modulars didn't have circuit boards and the contactors are not original. If you cannot get any information from the people who installed it or have...
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    As the fellow said, God must be a civil engineer....

    As the fellow said, God must be a civil engineer. Who else would put a toxic waste disposal pipe through a recreational area?

    Bill
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