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Chipmunk RPM Indicator System - Details Needed

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    Chipmunk RPM Indicator System - Details Needed

    Hi, Im after a schematic detailing the RPM gauge installation in the Chipmunk to assist a restoration project the system for the single Smiths Mk IV RPM generator powering two gauges (6A/1299 if I remember correctly). Does anyone have available a copy of such a wiring drawing or schematic?

    While on the subject of the RPM gauges Im after a couple if anyone has some available.

    Many thanks

    #2
    While not an approved document the pictures show extracts from a Smiths catalogue which gives technical descriptions of their instruments (using the Smiths codes of 78RV for the indicator and 54MV for the generator) and generic installations.

    Hope it's of use.

    Regards
    Dave

    Click image for larger version

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    www.dsgaviation.co.uk

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      #3
      Yes what he said. The wiring is slightly diferent for clockwise or anticlockwise rotation.
      Last edited by smirky; 8th November 2017, 01:10.

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        #4
        Are you on the Facebook 'de Havilland Chipmunk Appreciation Society' group. They have a wealth of knowledge there.
        de Havilland forever!

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          #5
          https://www.facebook.com/groups/429558373751028
          Noticed on this faceache page a set of pilots notes for sale for the Chippie, scroll down on page
          "For you Hilts one month solitary watching Downton Abbey"

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