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Type: Posts; User: jim rozen

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  1. Short answer: probably. It it were me I'd try...

    Short answer: probably. It it were me I'd try it, it's not a lot of work to put it back if it does not work.
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    Except for the rather large contingent who were...

    Except for the rather large contingent who were actual nazi sympathizers. America First, anyone?
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    You do understand of course that healthcare is...

    You do understand of course that healthcare is not a basic human right. And imagine if we had (gasp) single payer
    national heathcare - like they do in the UK. Why I've heard horror stories about...
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    We were sourcing silicon plates years ago, the...

    We were sourcing silicon plates years ago, the tops had to be flat within a micron over the entire surface. These were about 6 inch by
    3 inch rectangles, about 3/8 thick.

    There was a company...
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    Could NOT pass a parallelism spec because the...

    Could NOT pass a parallelism spec because the underside the plate is all wavy. But if the spec it written such that the one test area is in one
    section for a foot, and another section for the...
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    +1 Flatness discusses *one* surface only. By...

    +1

    Flatness discusses *one* surface only. By its nature it cannot say anything about parallelism of two surfaces.
  7. I'd be more worried that 'granite' would be...

    I'd be more worried that 'granite' would be awarded to posters with unusually hard heads. Don't
    know anyone like that around here....

    Six feet under?
    Dirt nap?
    Silent key?
    Closed shop?
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    Why dither over something you can measure? Find...

    Why dither over something you can measure? Find somebody with a Brinell tester. Get the number.
    Call the heat-treat shop back and say they fucked up, they're not getting paid and they need to do...
  9. I checked the clearance on the spindle like this,...

    I checked the clearance on the spindle like this, last night. I have it set at 0.0006 inch axial play. Takes
    a fair bit of force to overcome the oil film when checking this.
  10. One regular poster here had a very clever setup...

    One regular poster here had a very clever setup using a foot pedal to bring a friction roller in contact to connect the pony motor. My approach is to simply
    slack the belt that connects the two,...
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    LIke whomever sold my my Hitachi drive, with...

    LIke whomever sold my my Hitachi drive, with manual. Manual insists user MUST set certain parameters. Drive is shipped with a
    reduced instruction set locked in there, preventing said setting...
  12. Don't do what - balance capacitors, pony motor,...

    Don't do what - balance capacitors, pony motor, or un-syncronized energizing of the idler?

    Honestly I cannot imagine how one *would* sync that up for a 100 hp idler. Nothing is variable as a...
  13. If the bearing clearances are too tight it the...

    If the bearing clearances are too tight it the fronts will warm up a lot. If too loose then you will go through a bit more oil than you
    might like. Keep the oil cups full, be sure the wick is in...
  14. Nice lathe. Usually with bearings like these,...

    Nice lathe.

    Usually with bearings like these, you will see a problem where the spindle bogs down or even stops, when run at extended
    time at top speed. This is typically accompanied with the...
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    While none [1] were burned at the stake, one was...

    While none [1] were burned at the stake, one was crushed to death with stones.

    [1] sock puppet purveyors
  16. Because there are no rotor currents until the one...

    Because there are no rotor currents until the one winding is energized, I've never seen anyone worry about powering
    up an idler motor "in sync." What would be in, or out of, sync with?

    Also I am...
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    Well you got it in one. Nothing. Their tax...

    Well you got it in one. Nothing. Their tax bill in 2018 was zero. If motion guru came here and said
    'hey, I have a great trick for avoiding federal income tax' you would be all ears. You'd be...
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    As others have mentioned the brake on this lathe...

    As others have mentioned the brake on this lathe is pretty simple. Not to put too fine a point on it,
    if one cannot fix that so it works well, then there's little chance a braking resistor...
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    You mean like what Federal Express just did?

    You mean like what Federal Express just did?
  20. Removing the spindle: 1) do you really need...

    Removing the spindle:

    1) do you really need to, is there something wrong with it? If not probably best to leave it alone. Otherwise:

    2) It probably is similar to the lathe spindle of the...
  21. +1 although I would go with a 1/4 inch diameter...

    +1 although I would go with a 1/4 inch diameter steel ball.
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    Well they sure got it to market fast, but it...

    Well they sure got it to market fast, but it seems like the marketing department did not have to deal with the fallout
    the way the CEO did. Penny wise and Pound foolish is the apparent approach.
    ...
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    [QUOTE=KBenoit1;3450132]Guys look at the pictures...

    [QUOTE=KBenoit1;3450132]Guys look at the pictures in my last post. I already separated the upper and lower tailstock.

    Missed the photo showing the two mating surfaces.
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    Those numbers were from my stone age converter,...

    Those numbers were from my stone age converter, no capacitors were harmed in its construction.
    At the same that I borrowed a digital scope from work to check the waveform balance, I used a...
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    Suggest you slack the two opposed screws on the...

    Suggest you slack the two opposed screws on the tailstock upper, and remove the lower portion.
    Inspect both halves for signs of machining.

    The underside of the lower portion looks pretty much...
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