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  1. #1
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    Alternative to Dewhurst reversing switch.

    I have a myford super 7 fitted with the standard dewhurst switch. The lathe was made in 1984 and the switch is original. The poor thing has had a hard life and getting spares is difficult and expensive, over the past couple of years I have manufactured my own new pins and clips but these never last long and the tiny little sparks from turning on and off eventually errode away the metal so now the larger parts of the switch are going as well and these are too complex for me to manufacture. So aside from buying a second hand dewhurst switch (expensive and difficult) what can I use instead? I have seen different switches used on the newer myfords and I will contact them if necessary however knowing the price of myford spares I would like to avoid this

  2. #2
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    Re: Alternative to Dewhurst reversing switch.

    My (chinese) Lathe just has a simple double throw switch, I'm sure it costs all of 1.50 ...

    Does this help: http://www.robotroom.com/DPDT-Bidire...or-Switch.html

    Let us know how you get on. If that doesn't work, join up here and ask the helpful folks:

    http://www.homemodelenginemachinist.com/index.php

    Vic.

  3. #3
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    Re: Alternative to Dewhurst reversing switch.

    A quick ebay search turned up this

    http://cgi.ebay.co.uk/1-Single-Phase...41388166600283

    I emailed the company and they say it will work fine with my lathe and motor and they have a wiring diagram they can include for me as well. Price seems pretty reasonable compared to the switch Myford are selling, about 1/3 of the price in fact, I am just wondering if there might be a generic switch out there that is even cheaper?

  4. #4
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    Re: Alternative to Dewhurst reversing switch.

    Over here, they are referred to as a "drum switch".
    I sprang for a brand name, Square D, but there are plenty of cheapie no name imports.

  5. #5
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    Re: Alternative to Dewhurst reversing switch.

    50 for a switch! Have a look here, about half way down. You need a double pole double throw switch. They show you how to wire it up as a reversing switch.

    http://www.kpsec.freeuk.com/components/switch.htm

    1.73 http://uk.rs-online.com/web/4406856.html

    I'm sure this is what I have on my Lathe.

    Vic.

 

 

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