Search Results - Practical Machinist - Largest Manufacturing Technology Forum on the Web
Close
Login to Your Account

Search:

Type: Posts; User: rabler

Page 1 of 2 1 2

Search: Search took 0.00 seconds; generated 41 minute(s) ago.

  1. Replies
    9
    Views
    361

    Not sure how you computed 26.5 VDC, but that's...

    Not sure how you computed 26.5 VDC, but that's not correct. AC voltage is actually measured RMS (root mean square), which is roughly a way of saying "average" voltage. (It is actually computed to...
  2. Replies
    2
    Views
    326

    I think from what you're saying, the 200amp panel...

    I think from what you're saying, the 200amp panel is not in the same area/room as your shop, in which case I would suggest putting a 100 amp breaker panel in your machine shop. It makes it a lot...
  3. Replies
    47
    Views
    2,750

    Hard to say without knowing the condition of...

    Hard to say without knowing the condition of every aspect of the lathe. I'd suggest planning on initially leveling it up with the .005"/ft level you have. Most lathes benefit from being leveled,...
  4. Replies
    55
    Views
    5,488

    If there are any remaining I'd like one too.

    If there are any remaining I'd like one too.
  5. Oil tumbler at arrow

    That gear has a integral key. Which makes sense. So I don’t see any reason not to go with the bearing bronze.

    Here is a picture of the tumbler lever, geared shaft, and idler gear.
    294061
    Note...
  6. On second thought those bushings were probably...

    On second thought those bushings were probably steel sleeves for a reason. The idler lever slides on a shaft with a captive gear keyed to that shaft. Those steel bushings need to slide the key too....
  7. '44 CK QCGB bearing list

    Apparently there is a time limit on how long you can go back and edit a post. So the previous post is going to retain the initial message :(

    Here's a list of bearings as found in the guts of the...
  8. Replies
    17
    Views
    7,176

    I once slipped a C172rg from 5000 ft to sea level...

    I once slipped a C172rg from 5000 ft to sea level on a contact approach to a coastal airport near a mountain range after the localizer was shutdown while enroute IFR. My passenger was a bit green on...
  9. I haven't tried yet but from looking at the...

    I haven't tried yet but from looking at the Parker manual, I don't believe you need a full relay to swap the poles of the pot on the 514c to implement a reverse switch. Run the ends of speed pot...
  10. This series field is what Thermite advocates...

    This series field is what Thermite advocates leaving out in post #68 on this thread. I’m just wondering if anyone has tried to include it per factory original.
  11. Ack, I was picturing the series field and my...

    Ack, I was picturing the series field and my fingers wrongly put shunt field in my post. I fixed that.

    I’ve already figured out I’m going with the relay swapping +10/0v/-10v for reversing and...
  12. Has anyone worked out a circuit to emulate the...

    Has anyone worked out a circuit to emulate the polarity switching of the armature vs. the series field for forward/reverse? Or has everyone gone with the “not worrying about it” approach and been...
  13. Replies
    11
    Views
    1,311

    Depending on your VFD model there are probably...

    Depending on your VFD model there are probably several ways to accomplish this. You’ll need to dig into the programming/setup manual. I’d suggest finding a few examples in that manual that are...
  14. Replies
    22
    Views
    2,056

    Former pilot. Medical complications a little...

    Former pilot. Medical complications a little over 10 years ago left me grounded.
  15. Replies
    2
    Views
    569

    I upped the max spindle speed on my ‘44 CK from...

    I upped the max spindle speed on my ‘44 CK from 550 to 1100 by putting in a new motor and VFD. 1100 rpm is pushing it on mine. Although a complete overhual is in progress, I expect 800 rpm to be a...
  16. QCGB removal and disassembly

    (Note, I'm going to edit this over a couple of sittings. If you see this message it means it's not finished).

    292742

    Removing the QCGB requires some prep. All of the apron control/drive...
  17. Replies
    18
    Views
    2,303

    Congrats on the CK acquisition. I’m working on...

    Congrats on the CK acquisition. I’m working on overhauling a 1944 CK. Very nice machines!
  18. If you have the manual from Monarch that matches...

    If you have the manual from Monarch that matches your serial number, you're not going to find much more documentation for your lathe. In addition to searching the posts here as mentioned above, you...
  19. Disassembling the apron was a bit of a challenge...

    Disassembling the apron was a bit of a challenge as I had to drive out the bearing cones to get many of the shafts out. Before taking the apron apart, take a minute to notice the interlock mechanism...
  20. Removing Apron and QCGB

    Some quick notes on disassembling the apron and quick change gear box on my '44 12" CK:
    292639
    292638
    This is per my memory so may not be completely accurate.
    To remove the apron, remove the...
  21. As far as the 1944 CK Currently just about have...

    As far as the 1944 CK
    Currently just about have the apron back together after completely taking it apart, cleaning out way too much crud in the bottom. Surprisingly the bijur pump had still been...
  22. I’m going to start with targetting 240VDC max to...

    I’m going to start with targetting 240VDC max to the motor. That’s what it is plated for. Of course, 310VAC is RMS, not peak voltage. Full wave rectify it and you get 155V rms or about 220V peak. ...
  23. Ok, to start I found an Acme T-1-53144-1...

    Ok, to start I found an Acme T-1-53144-1 transformer, full isolation plated for converting 208 -> 120/240. It has primary taps for 192v in -> 240, so 240 in will give me 308, and with luck won’t...
  24. Is 320VAC into the 514c a hard target or a lower...

    Is 320VAC into the 514c a hard target or a lower limit? In other words, if I feed it a bit more more can I tune the output down to compensate? Looks like I can but wanted to confirm, as it gives a...
  25. Thanks thermite, I've found everettengr's thread...

    Thanks thermite, I've found everettengr's thread and will be looking at that carefully. Should be an interesting project.
Results 1 to 25 of 31
Page 1 of 2 1 2