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Bristol Mercury VIII

Engines Discuss Bristol Mercury VIII in the Technical forums; Does anyone know if the Bristol Mercury VIII suffered from negative G's, like many early engines, like the Merlin II?...

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    Senior Member Marcel's Avatar
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    Bristol Mercury VIII

    Does anyone know if the Bristol Mercury VIII suffered from negative G's, like many early engines, like the Merlin II?


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    mercury VIII and negativ G

    Yes, this engine suffers to G as all aero-engines fitted with carburettor in which there is a float chamber.
    The bristol Mercury VIII has claudel Hobson carburettor (type A.V.T.85.E )with double float chamber.
    Westland lysander had a Bristol Mercury XX engine with a similar Hobson carburettor.
    Hugh Verity in his book "We landed by moonlight" relates a lysander landing with bouncing which induces engine cut-out!
    Boucing generates a series of sudden positiv and negativ G which were the cause of fuel starvation for the carburettor's fuel jets and so engine cut-out!

    Regards

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    Senior Member Marcel's Avatar
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    Good info, thanks!

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