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  1. #16
    Join Date
    Oct 2009
    Location
    Upwey VIC
    Posts
    157

    Default

    Quote Originally Posted by Bryan View Post
    I have a Lantaine-based lathe. On mine the front tumbler is 20T and the rear is 25T. I worked out the pitch once but I've forgotten. 12DP rings a bell.

    It looks like Ash's lathe has a 22T gear on the front tumbler.
    If Ash can measure the outside diameter of this gear we can determine the DP/MOD more accurately.

    Andrew

  2. #17
    Join Date
    Jun 2007
    Location
    Vic
    Age
    42
    Posts
    403

    Default

    If you are out of luck, then check the distance D1 and D2 together with exiting gears, you will be able to get one made.

    IMG_6022.jpg

  3. #18
    Join Date
    May 2010
    Location
    Lower Lakes SA
    Age
    52
    Posts
    2,598

    Default

    This is a 40T Hercus gear that matches mine. Would the 16 mean 16DP? OD is around 66.6mm.
    Attached Images Attached Images

  4. #19
    Join Date
    Mar 2013
    Location
    Moama
    Posts
    21

    Default

    Hi Jackaroo
    It is a S1124A
    Cheers
    Ash

  5. #20
    Join Date
    Mar 2013
    Location
    Moama
    Posts
    21

    Default

    Thanks Roger
    I will give them a call.
    Cheers
    Ash

  6. #21
    Join Date
    Mar 2013
    Location
    Moama
    Posts
    21

    Default

    Thanks Bryan
    That looks very similar to mine.
    Hopefully getting closer
    Regards
    Ash

  7. #22
    Join Date
    Mar 2013
    Location
    Moama
    Posts
    21

    Default

    Hi Gents
    I ran Hare and Forbes, and as Roger suggested, given it was not one of their lathes they couldn't help.
    He suggested I contact Quality Machine Tools which I have done and sent a couple of photos to them to see if they can help.
    Fingers now crossed. If not I'll do some measuirng as you suggest and see if soemone will make me one.
    Regards
    Ash

  8. #23
    Join Date
    Jul 2010
    Location
    Melbourne
    Posts
    8,225

    Default

    Hi Ash,

    Did any other gears come with the lathe?
    Looking at your picture it appears to be a imperial lead screw, with a 120/127 compound gear for metric pitches or vice versa. So I'd think there should be some more gears. I cant see a metric threading chart though.
    Do you want to cut metric threads?
    Just that while you're chasing up gears you may as well get them all if you'll need them.
    A better picture of the charts on the front of the lathe may help.

    Stuart

  9. #24
    Join Date
    May 2010
    Location
    Lower Lakes SA
    Age
    52
    Posts
    2,598

  10. #25
    Join Date
    Mar 2013
    Location
    Moama
    Posts
    21

    Default

    Quote Originally Posted by Stustoys View Post
    Hi Ash,

    Did any other gears come with the lathe?
    Looking at your picture it appears to be a imperial lead screw, with a 120/127 compound gear for metric pitches or vice versa. So I'd think there should be some more gears. I cant see a metric threading chart though.
    Do you want to cut metric threads?
    Just that while you're chasing up gears you may as well get them all if you'll need them.
    A better picture of the charts on the front of the lathe may help.

    Stuart

    Hi Stuart

    No gears came with lathe. I would ideally like to cut metric threads one day. So the best thing would be to change all the gears?

    Photo of chart below. It is exactly the same as one I found on a Honden L-900B

    Hope this helps.
    IMG_6026.jpg

  11. #26
    Join Date
    Mar 2013
    Location
    Moama
    Posts
    21

    Default

    No luck with Quality Machine Tools either. Didn't want to know anything about it. Bugger.

  12. #27
    Join Date
    Jul 2016
    Location
    Melbourne
    Age
    29
    Posts
    337

    Default

    If you are really patient and supply the stock and a drawing i would be happy to make the gear for You, but i don't have a heap of workshop time at the moment, if you have a mill i could also lend a dividing head on a short term basis.

  13. #28
    Join Date
    Aug 2010
    Location
    Bendigo
    Age
    66
    Posts
    2,438

    Default

    Hi Ash,
    given that you are in Moama and I'm in Bendigo, why don't you come and visit one day soon, and bring the gear you have with you. I have a largish collection of gears of that size and may well have what you need. The prerequisite is of course that you figure out what number of teeth the missing gear was. Have you tried putting the one you have in the place of the missing one yet to see if it meshes there?
    Cheers, Joe
    almost completely retired - more time to contemplate projects and spend more shed time....

  14. #29
    Join Date
    Mar 2013
    Location
    Moama
    Posts
    21

    Default

    Hi Caskwarrior, thanks for your generous offer. I have received the same generous offer from another member (as well as a lot of great advice).

    I am astounded at the generosity of the people on this forum.

    Thanks again and I will keep your offer in mind.

    Regards

    Ash

  15. #30
    Join Date
    Mar 2013
    Location
    Moama
    Posts
    21

    Default

    Hi jhovel
    Thanks to you too for your generous offer. I would love to take you up on the offer. I will keep researching the gear I am missing and get back to you.
    Thanks again and I look forward to meeting you in Bendigo (hopefully) soon.
    I haven't tried the existing gear as you suggest. I didn't think of trying that, but I will this weekend and let you know.
    Regards
    Ash

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