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  1. #1
    Join Date
    Nov 2008
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    Default Help with part name.

    I can't remember what they are called, but they are pretty much a disc with a type of tooth setup on the face, that only drive one way when two are combined. Pretty poor description but maybe enough for someone to know what I mean.
    Nev.

  2. #2
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    Aug 2008
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    near Rockhampton
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    Default

    A ratchet drive? Or an overrunning clutch sort of thing? Dog clutches are positive drives that run both ways.
    Gold, the colour of choice for the discerning person.

  3. #3
    Join Date
    Nov 2007
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    melbourne australia
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    Default

    Google “ratchet slip clutch” and select images. I think that’s what you’re after.
    Chris

  4. #4
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    Default

    One way ratchet is what I was thinking. Two discs mounted to a shaft with a spring to lock them together in one direction and when reversed it would ratchet freely.
    Nev.

  5. #5
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    Nov 2007
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    Default

    https://www.ggmfg.com/products/coupl...p-clutches.php

    doesn’t appear to be one-way though.
    Chris

  6. #6
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    Sep 2012
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    York, North Yorkshire UK
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    Default

    Quote Originally Posted by jack620 View Post
    https://www.ggmfg.com/products/coupl...p-clutches.php

    doesn’t appear to be one-way though.
    Hi Chris, Guys,

    No they are not, they are similar in action to the screw driving clutch used on battery operated drills !
    Best Regards:
    Baron J.

  7. #7
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    Default

    Here's a link to an Overunning Clutch. -

    https://www.youtube.com/watch?v=gOuLq2haqLY -

    So what I am looking for is pretty much the tooth design on this but instead it will be on the face of the discs rather than on the ID as it is here. I know they exist because I have seen them before but forget their name.
    Nev.

  8. #8
    Join Date
    Nov 2007
    Location
    melbourne australia
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    Default

    A kickstart ratchet? https://kzrider.com/forum/2-engine/5...tarter-stopper

    Quote Originally Posted by SurfinNev View Post
    I know they exist because I have seen them before but forget their name.
    Where have you seen them? In what context?
    Chris

  9. #9
    Join Date
    Jan 2004
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    Mackay North Qld
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    Default

    Escapement , as in watch and clock making ?

    Watch Escapements Diagrams & Pictures

    Grahame

  10. #10
    Join Date
    Dec 2013
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    Default

    What diameter are you after, I'm sure I have a side type of teeth to suit around 40mm

    Sent from my 5007U using Tapatalk
    Using Tapatalk

  11. #11
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    Sep 2007
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    Wentworth Falls NSW 2782
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    Default

    Face gear?

    face-gear-drive.png

  12. #12
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    Sprag clutch is probably closest to what I was thinking of, but still not what I am looking for. Will think of the name in the middle of the night maybe.
    Nev.

  13. #13
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    Default

    Stumbled across this during my searches. Maybe of some interest -

    https://cpb-us-w2.wpmucdn.com/sites....d-Linkages.pdf
    Nev.

  14. #14
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    Default

    Nordlock Washers seem to be the closest thing yet. The idea was to attach one washer to a lever and the other to a shaft I wish to drive. Lever bolted into end of shaft with a little clearance so it can disengage when reversed. A spring would apply pressure to the lever with the washer fixed to it so it would engage in one direction. I am still sure there was something similar though.
    Attached Images Attached Images
    Nev.

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