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* THE FORUM FOR ALL THOSE INTERESTED IN BUILDING AND OPERATING MODEL SUBMARINES *



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Papplewick Pumping Station SUBMARINE Day. 31st March - 1st April 2024.

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And here's another nostalgic one.. EmptyFri Apr 26, 2024 1:58 pm by david f

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And here's another nostalgic one.. EmptySun Apr 21, 2024 6:09 am by geofrancis

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profesorul
Tom(ADMIN)
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    And here's another nostalgic one..

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    Tom(ADMIN)
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    Post  Tom(ADMIN) Mon Mar 05, 2012 1:44 pm

    Anyone know what this is? Or what it does?

    And here's another nostalgic one.. Dsc00015

    And here's another nostalgic one.. Dsc00016

    And here's another nostalgic one.. Dsc00017
    profesorul
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    Post  profesorul Mon Mar 05, 2012 1:50 pm

    Where did you find all these stuff?!.
    MARIUS
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    Post  Tom(ADMIN) Mon Mar 05, 2012 1:52 pm

    Ah, Marius...I've been building model boats for over forty years now, I have loads of stuff like this. Maybe I should start a museum?
    profesorul
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    Post  profesorul Mon Mar 05, 2012 2:17 pm

    SEROUSLY is NOT a Bad Ideea!.
    MARIUS
    david f
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    Post  david f Mon Mar 05, 2012 3:18 pm

    Now that looks like a speed controller!

    Paralleled up MOSFETs (to get a low resistance) and a nifty heat sink are likely clues?

    David
    Hermann
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    Post  Hermann Mon Mar 05, 2012 6:11 pm

    Yes David,

    this is a speed controller. And furthermore - about 20 years ago I built a similar one of own design, also with relays for reversing and also with paralleled MOSFETs (it still works...).

    Never think bad of older devices - although they need more space in general they can be repaired more easyly and th electronic components for repair are less affected from obsolescence than modern highly specialised parts.

    Best regards
    Hermann
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    Post  Tom(ADMIN) Mon Mar 05, 2012 6:50 pm

    Well...here's something I didn't expect. Speedmaster seem to be still in business and still making esc's...I'll make a couple of phone calls tomorrow I think!

    http://www.speedmaster.co.uk/
    profesorul
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    Post  profesorul Mon Mar 05, 2012 7:25 pm

    HI,
    Can someone restore the wiring diagram of that assembly?(maybe there is someone ho can do that) and a list with components?.
    Because I think it can be used again with success.
    If the components are cheap and can still be found someone who has knowledge in electronics assembly can recover the device.
    MARIUS
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    Post  Tom(ADMIN) Mon Mar 05, 2012 7:32 pm

    The man to ask that question to would be Hermann, I think...
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    Post  thegrimreaper Tue Mar 13, 2012 11:15 am

    Well Richard all I can say is I haven`t ever seen one of those before probably because I ain`t that old ha ha sorry couldn`t resist looking at your other link for old radios as well good god man the earliest radio I can remember is a two channel futaba
    Deep Diver (Fred)
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    Post  Deep Diver (Fred) Wed Mar 14, 2012 9:24 am

    Give Alf a call.

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