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  1. Replies
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    Mars lathe spindle speeds/ bull gear lock arrangement

    Hi again,
    Just wondering if anyone has for a Mars Mercury lathe, a table showing spindle speeds for various pulley combinations, with back gears disengaged and engaged. From my observations the same...
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    Mars lathe change gears

    Thanks for all your contributions. It looks like I have managed to find someone to make the Mars lathe change gears that I need,
    Regards,
    robjean
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    Hi elanjacobs, Again many thanks for your help...

    Hi elanjacobs,
    Again many thanks for your help and advice. I now realise that I need the second 20 tooth tumbler gear to be able to reverse the direction of rotation of the gear train. I found a...
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    [QUOTE=elanjacobs;1971411]Sorry, I did see but...

    [QUOTE=elanjacobs;1971411]Sorry, I did see but thought I'd check if we had a hob first.

    You're both correct, 14DP 14.5° PA

    Unfortunately we only have a 14DP 20° hob, our 14.5° range tops out...
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    Hi elanjacobs, Not sure I posted my reply...

    Hi elanjacobs,
    Not sure I posted my reply correctly, so here goes again! Have attached a scan of marked up photos of two gears for you to have a look at and see if you can make them. I believe...
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    Hi Glen, I realise that it is several years...

    Hi Glen,
    I realise that it is several years since you made this post. But I have a Mars Mercury lathe with exactly the same screw cutting table for gear set up. Did you ever establish what...
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    & Hi elenjacobs,Have attached scans of both...

    &


    Hi elenjacobs,Have attached scans of both gears with dimensions for you to have a look at. If you are able to make, let me know costs so I can reimburse. Many thanks,
    robjean
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    Hi Brian, I am aware of this firm, but didn't...

    Hi Brian,
    I am aware of this firm, but didn't realise they had gears. will check. Many thanks
    Rob
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    Hi elanjacobs, Thanks for your offer if you’re...

    Hi elanjacobs,
    Thanks for your offer if you’re sure it is no trouble. Will get the dimensions of the two gears for you,
    Regards,
    bobjean
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    Hi Ray, Many Thanks. Will check it out robjean

    Hi Ray,
    Many Thanks. Will check it out
    robjean
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    Hi pipeclay, Thanks for your reply, but as...

    Hi pipeclay,
    Thanks for your reply, but as stated in my reply to caskwarrior I had hoped ( perhaps optimistically) that out there among forum members someone might have details of the quantity and...
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    Hi caskwarrior, Thanks for your reply. Yes I...

    Hi caskwarrior,
    Thanks for your reply. Yes I have copies of Machinery’s Handbook, but at this stage don’t have a particular thread in mind. I first wanted to see if I could at least establish if...
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    New member from Canberra

    Hi All,
    My interest is in the restoration and maintenance of vintage cars. I am a retired mechanical engineer, and acquired a Mars Mercury lathe several years ago, which has been used for turning...
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    Mars Mercury lathe

    I acquired a Mars Mercury lathe several years ago and have only used it for turning. Thought I should get the screw cutting feature working, but firstly am not sure what a full gear set consists of....
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    Mars Mercury lathe

    I have had this lathe for several years and just used it for turning. Would like to see if I can restore it for thread cutting. Unfortunately a couple of the gears have stripped teeth, and I have no...
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