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  1. #1
    Ueee's Avatar
    Ueee is offline Blacksmith, Cabinetmaker, Machinist, Messmaker
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    Default Holbrook C10 Lathe

    Hi all,
    Here are some pics of the lathe as she is.

    The electrical problem turned out to be the electrician and not much else. The coil on one of the contacts went and it was replaced by a modern unit. However when the switch box was put back together the main contacts that control the motor speeds was put back in 180 deg out. By fluke it meant that the low speed contacts lined up but none of the rest, and somehow they did not short anything! Once i had worked out what was wrong it was as simple as pulling a split pin out, rotating the contacts around and putting the pin back in.

    There are a few issues, the worst by far is the brake jams in the high speed position making it hard to get back to neutral, and the t/s handwheel has been replaced with a stop cock handle at some stage. What the? The T slots in the rear of the cross slide are broken out and the cross slide stops are missing too.

    Anyway, she'll get a good clean at this stage. I think i'll need to get some positive rake carbide for her, not enough power or high enough feed rates for the negative rake WNMG's i've come to like. Fantastic finish of HSS though. When you can feed as slow as .0004" per rev you wouldn't expect anything else.

    Cheers,
    Ew
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    1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.

  2. #2
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    Default

    looks like a great lathe there Ueee
    BETTER TO HAVE TOOLS YOU DON'T NEED THAN TO NEED TOOLS YOU DON'T HAVE

    Andre

  3. #3
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    Default

    Another interesting machine for the collection Ewan.

    Quote Originally Posted by Ueee View Post
    When you can feed as slow as .0004" per rev you wouldn't expect anything else.
    Always in a hurry. Still maybe thats why you get so much done


    Stuart

  4. #4
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    Default

    Hi Ewan,

    Nice acquisition, looks good.. I was going to make a comment about diminishing space, but then I looked in the workshop door here. I'm starting to keep an eye out on Gumtree for a used tardis.

    Ray

    PS... I'll be in your neighborhood next week... anything you need picked up?

  5. #5
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    Default

    That brings back memories for me, I used to operate a larger version Holbrook in the TAA machine shop at Essendon Airport, I wish I had taken some pictures of it.

    Ewan, does it have a taper turning attachment?

    Lex.

  6. #6
    Ueee's Avatar
    Ueee is offline Blacksmith, Cabinetmaker, Machinist, Messmaker
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    Default

    Thanks guys,
    The earlier holbrooks all came with a TTA standard, this one is capable of turning 12" length up to a 4" taper on diameter. It is mounted on its own t slot machined into the back of the bed, so it can be moved to any part of the bed or out of the way behind the head. Since the cross slide is a double slide there is no telescopic lead screw, you simple remove the tapered locking pin from the bottom section of the slide and drop it into the TTA slide. This way you still have full use of the cross slide.

    Some more investigating last night and i have found a few more interesting features, you can disengage the saddle handwheel for metric threading, so there is no chance of it collecting you whilst you go back and forwards. There are oil pumps on both the apron and QCGB that oil pretty much everything from the cross slides to the change gears and all the internals. It has a quick retract for the cross slide for threading. The one big lack is a reverse for the feed from the apron.

    I still want to put the vfd on it, but would really like an analog tacho (yeah its anal i know). Short of making one from scratch i don't seem to be able to fine anything suitable. Any ideas?

    Cheers,
    Ew
    1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.

  7. #7
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    Quote Originally Posted by Ueee View Post

    I still want to put the vfd on it, but would really like an analog tacho (yeah its anal i know). Short of making one from scratch i don't seem to be able to fine anything suitable. Any ideas?

    Cheers,
    Ew

    A few rpm too many but how about a Smith's tacho ? http://www.ebay.com/itm/BSA-TRIUMPH-...-/221411469001

    BT

  8. #8
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    Ueee,
    Sure is a nice solid looking lathe. You might be able to pick up a mechanical tacho with a more appropriate range from a truck wrecker, old diesel ones had a good range for your lathe.
    Bob

  9. #9
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    looks like the goods eh?

    pink is my colour choice...same as RC's..maybe bit more pink

  10. #10
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    the modern contactor needs some adjustment...some degrees anticlockwise by the looks of it

  11. #11
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    Quote Originally Posted by Ueee View Post
    Short of making one from scratch i don't seem to be able to fine anything suitable. Any ideas?
    Yes... I think I might have just the thing.. I'll dig out some bits and pieces and see if it's what you are looking for..

    Ray

  12. #12
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    Default nose

    Hi

    It's always an exciting and somewhat anxious event, going over a new toy and discovering what is broken or missing

    Does it have a normal camlock spindle Ewan ? Mike

  13. #13
    Ueee's Avatar
    Ueee is offline Blacksmith, Cabinetmaker, Machinist, Messmaker
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    Default

    Thanks Ray.

    Mike, the nose is D1-4, taper I'm not sure on yet. They came with an mt2 sleeve originally but of course I don't have that. I do have a draw bar but no collets, plus the original copper tipped knock out bar.

    Just like the poorly named 10EE the C10 will swing 12" over the bed.

    Ew
    1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.

  14. #14
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    Hi Ewan,
    fantastic pickup.
    Now, let me see if I have this right.
    The steam enters the drive mechanism through the steam valve where the tailstock quill used to be and that changes the spindle speed which will then...

    Phil

  15. #15
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    Quote Originally Posted by Steamwhisperer View Post
    Hi Ewan,
    fantastic pickup.
    Now, let me see if I have this right.
    The steam enters the drive mechanism through the steam valve where the tailstock quill used to be and that changes the spindle speed which will then...

    Phil
    Come on, join the early 20th Century. The steam drives the Tesla turbine which drives the 3 speed newfangled Tesla motor which drives the 19th Century lathe body...

    Those Holbrooks are very nice machines, let down IMO by an inadequate spindle bore. But then that's my opinion of my big Monarch, too.

    PDW

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