Results 1 to 18 of 18
  1. #1
    sakurama's Avatar
    sakurama is offline Aluminum
    Join Date
    Oct 2010
    Location
    Brooklyn
    Posts
    64

    Default Power cross feed question

    Umm, how does it work?

    I recently picked up a nice 10K and while I can get the power feed to work longitudinally I can't figure out the power cross feed. I assumed that the three position lever behind the power feed engagement lever was it but if the lever is in either the top or bottom the power feed engagement doesn't move. In the center I get power feed longitudinally but nothing otherwise.

    I'm guessing I'm missing something obvious but a couple of machinist friends weren't able to figure it out either (spoiled Hardinge owners) since none of us has ever used a South Bend. Either something is broken (which I'm doubting since the machine is in really nice shape) or I'm missing something.

    Oh, not sure if it matters but it has a taper attachment. Here's a photo:



    http://gallery.me.com/gregorhalenda/...12974724460001
    Last edited by Paula; 02-12-2011 at 08:56 AM. Reason: Oversize image -- see guidelines

  2. #2
    tommy69z is offline Aluminum
    Join Date
    Nov 2010
    Location
    Alabama
    Posts
    71

    Default

    on mine, down is crossfeed, and up is carraige feed, center is neutal, you did tighten the clutch I assume...also mine takes a couple seconds to start moving, wear I guess....Nice find by the way!

  3. #3
    wawoodman's Avatar
    wawoodman is offline Cast Iron
    Join Date
    Jun 2006
    Location
    Seattle, WA
    Posts
    417

    Default

    I'll bet it's the clutch he's missing! That's the starwheel at the bottom center. Just a fingertip tightness is all you need.

    It is beautiful. Just like mine - only a LOT cleaner!

  4. #4
    oldbrock is offline Hot Rolled
    Join Date
    Feb 2008
    Location
    Glade BC, Canada
    Posts
    626

    Default

    Yes. When it is in the center the half nut leaver can be engaged for screwcutting. Up or down then you use the star wheel to tighten the clutch for feed. The feed amount per rev is beside the threads per inch on the thread chart on the quick change gear box. Nice condition, wish mine looked that good, Peter

  5. #5
    jim rozen is offline Diamond
    Join Date
    Feb 2004
    Location
    peekskill, NY
    Posts
    21,275

    Default

    "...three position lever behind the power feed engagement lever was it but if the lever is in either the top or bottom the power feed engagement doesn't move. In the center I get power feed longitudinally but nothing otherwise."

    Stop there.

    The thing you are calling the "power feed engagement lever" is the half nuts lever.
    It is ONLY used when the machine is set up for threading.

    The reason you cannot move that lever to engage what you think is the longitudinal
    feed, when the feed selector lever (three position, up-middle-down) is in the center
    is because of a deliberate lockout mechanism built into the apron.

    So to recap:

    1) Set the halfnuts lever in the open position, you will be sure this is so because
    the carriage will shift back and forth then.

    2) put the feed selector lever in the UP position to get longitudinal feed, and

    3) put the feed selector lever in the DOWN position to get power crossfeeds.

    4) To actually engage the feeds, as mentioned, turn the star wheel clutch gently
    to the right, or tight. To stop the feed, turn it left or loose.

    5) the halfnuts lever ONLY when you doing threading with the leadscrew.

  6. #6
    fciron's Avatar
    fciron is offline Hot Rolled
    Join Date
    Oct 2009
    Location
    Louisville, KY, USA
    Posts
    601

    Default

    Download a copy of the South Bend "How to run a lathe" book from Steve Wells' site. All this and other SB stuff will be explained.

    http://www.wswells.com/data/htral/htral_index.html

  7. #7
    sakurama's Avatar
    sakurama is offline Aluminum
    Join Date
    Oct 2010
    Location
    Brooklyn
    Posts
    64

    Default

    Quote Originally Posted by jim rozen View Post
    So to recap:

    1) Set the halfnuts lever in the open position, you will be sure this is so because
    the carriage will shift back and forth then.

    2) put the feed selector lever in the UP position to get longitudinal feed, and

    3) put the feed selector lever in the DOWN position to get power crossfeeds.

    4) To actually engage the feeds, as mentioned, turn the star wheel clutch gently
    to the right, or tight. To stop the feed, turn it left or loose.

    5) the halfnuts lever ONLY when you doing threading with the leadscrew.
    Hmm, that's the best explanation I've heard. I'll give it a whirl tomorrow when I machine a backplate for a chuck. Thanks much Jim and everyone else.

    I've read the "How to Run a Lathe" and while it's a nice 15 minute read it leaves more not explained than explained. Like cross feed for instance. Not mentioned once.

    Thanks!

    G

  8. #8
    Paychk is offline Aluminum
    Join Date
    Feb 2009
    Location
    Junction City, Oregon
    Posts
    63

    Default

    Which version of HTRL do you have?

    The 1942 edition; in chapter 2 has a paragraph, "Power Carriage Feeds" that covers this subject.

    I don't think the earlier editions do, I'm not sure about the 1930 edition, it may have it.

    If you can find a 1942 online some where or check the auction sites, it would be worth running down.

  9. #9
    Jim in Wis. is offline Plastic
    Join Date
    Jan 2011
    Location
    Sheboygan Falls, Wis
    Posts
    32

    Default

    Wow! That is a good looking lathe! You got a good one. I'm sure the feeds will work when you do like Jim R. said. The chart on your gearbox tells you where to put the levers to get different feed rates, how many thousands of an inch it will advance for every revolution of the spindle.

  10. #10
    jim rozen is offline Diamond
    Join Date
    Feb 2004
    Location
    peekskill, NY
    Posts
    21,275

    Default

    Yes, very nice lathe indeed!

    Too bad about the british motorbikes though.

    I think that's a twin-carb 650 BSA in the background there???

    A65T thunderbolt....?

  11. #11
    sakurama's Avatar
    sakurama is offline Aluminum
    Join Date
    Oct 2010
    Location
    Brooklyn
    Posts
    64

    Default

    Quote Originally Posted by jim rozen View Post
    Yes, very nice lathe indeed!

    Too bad about the british motorbikes though.

    I think that's a twin-carb 650 BSA in the background there???

    A65T thunderbolt....?
    There's more than a few British as that's what half the guys collect or race with about every Norton you can imagine. I have one Triumph, a Rickman, that I'm working on and then I tend toward Germanic. Here's my BMW which will be getting some updates this year.



    And my daily driver:



    By the way, thanks so much for the tip. I got both the long and cross feeds working and now I'm able to get the nice smooth finish that I couldn't before when I was trying to use the halfnut. Silly me. So the lathe works great and I appreciate the advice.

    Do you ride Jim? You're up near Poughkeepsie aren't you? Nice roads up there. My friends are ice racing there tomorrow but I need tires first...

    G

  12. #12
    fciron's Avatar
    fciron is offline Hot Rolled
    Join Date
    Oct 2009
    Location
    Louisville, KY, USA
    Posts
    601

    Default

    I guess that's my bad on the HTRAL recommendation. I've got a paper copy from 1969, which is about the same age as my lathe. I didn't look at the older copies, just posted the easy link.

    Glad you got it worked out in spite of my misdirection.

  13. #13
    sakurama's Avatar
    sakurama is offline Aluminum
    Join Date
    Oct 2010
    Location
    Brooklyn
    Posts
    64

    Default

    Quote Originally Posted by fciron View Post
    I guess that's my bad on the HTRAL recommendation. I've got a paper copy from 1969, which is about the same age as my lathe. I didn't look at the older copies, just posted the easy link.
    I think the online version is like 1930's but I hear later versions are much better so now I'll keep my eye out for one.

    I just don't have much experience outside the Hardinge which is like learning to drive in your dad's Porsche - you just don't know how good you had it. Now that I'm learning my way around this lathe I'm really liking it and I think I'll be able to make some nice parts. I'll certainly be the limiting aspect.

    G

  14. #14
    jim rozen is offline Diamond
    Join Date
    Feb 2004
    Location
    peekskill, NY
    Posts
    21,275

    Default

    Dual plugged. Very nice. Don't suck those tennis balls into those mikunis!

    Not dual plugged:



    Neither is the earls fork bike done that way, in the background. Nor is this one:



    You may notice a slight swelling of the pilot. Also a subtle shift in hair/beard
    color. I assure you this is just a trick of the light.


  15. #15
    jim rozen is offline Diamond
    Join Date
    Feb 2004
    Location
    peekskill, NY
    Posts
    21,275

    Default

    Wait.

    Were the drum brakes stock on that single swing arm BMW?

  16. #16
    sakurama's Avatar
    sakurama is offline Aluminum
    Join Date
    Oct 2010
    Location
    Brooklyn
    Posts
    64

    Default

    Nice! I thought you had the detailed personality of an airhead owner. You have some cool bikes for sure. I've wanted an older one but until the current projects are done I'm limiting my losses. I see a dirt bike back there too.

    My boxer started as an r90S that I crashed - here's a link from the original build which is what set me on the path to my own lathe (and mill now). The frame was redone, the rear end from a GSPD and the front is a Ducati donor. I'd like to upgrade the suspension this year. Hoping to get it reworked in time for the National in Pa this summer.

    Gregor

  17. #17
    jim rozen is offline Diamond
    Join Date
    Feb 2004
    Location
    peekskill, NY
    Posts
    21,275

    Default

    You crashed an original R90S??

    Well I guess the wreckage turned out OK in the end!

  18. #18
    edkolt is offline Hot Rolled
    Join Date
    Mar 2010
    Location
    NW Ohio, USA
    Posts
    550

    Default

    If after all this explanation it still does not move then you may have lost the key in the slot of the feed screw that engages the cross feed. Could have happened during the rebuild.

    Ed S

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •