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. ,Alfold Charity Model Boat Show, Surrey, 2nd & 3rd June 2018

Exeter & District Model Boat Club, Sunday 10th June

.Norwich MBC Weekend 28,29 July 2018
.Model Boat Convention, Haydock Park, 25,26th August

.Barrow in Furness MBC, Sub Day and Regatta,Sunday 2nd September 2018.

.Bluewater, Dartford, Chantry Model Boat Club, Sunday 2nd September

. Bournville MBC, Birmingham, Sunday 2nd September

,The Model Show,Poynton, Stockport (with swimming pool) 15,16th September 2018

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» Bournville May 2018
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» small diameter static-diving type SubDriver
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» bournville in a couple of days
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» For Sale almost new
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» New Member seeks Plans for O class
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    Simple on/off switcher


    AMS Forum Owner

    Posts : 2992
    Join date : 2010-11-05
    Age : 58
    Location : Nevada, USA

    Simple on/off switcher

    Post  Tom(ADMIN) on Sat Mar 09, 2013 4:22 pm

    You can't beat simplicity for ballast tank control (with apologies to David F, JR, Nigel, etc)

    This is the basic wiring diagram using two microswitches for flood/blow of a ballast pump.

    david f
    AMS Treasurer

    Posts : 1955
    Join date : 2010-11-10
    Age : 67
    Location : Cumbria

    Re: Simple on/off switcher

    Post  david f on Mon Mar 11, 2013 8:41 am

    No need to apolgise, Richard - it does the business!

    (I still use microswitches on my proportional piston tank to ask as limit switches. They are very reliablle. Just use a generously rated microswitch if you are switching the motor directly.)


    Posts : 27
    Join date : 2012-02-19
    Age : 54
    Location : King's Lynn Norfolk

    Re: Simple on/off switcher

    Post  Lash151 on Tue Mar 12, 2013 4:06 pm

    Hi David...
    Do you have a wiring diagram of micro switches as travel limiters on a piston tank?
    Thanks Lee
    david f
    AMS Treasurer

    Posts : 1955
    Join date : 2010-11-10
    Age : 67
    Location : Cumbria

    Re: Simple on/off switcher

    Post  david f on Wed Mar 13, 2013 8:28 am

    Sorry I don't have a diagram.
    It is all in Norbert Bruggens book, Model Submarine Technology (A must have,I would say.)

    You put 2 microswitches in with diodes in parallel. (The switch cuts off the motor and the diode allows it to reverse.)


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    Re: Simple on/off switcher

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