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Thread: Hawker Typhoon modification 293 ?

  1. #1
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    Default Hawker Typhoon modification 293 ?

    Anyone seen this posting on the TOCH Forum ?

    Hawker Typhoon modification 293.
    What did mod. 293 include?

    Does anyone on this Forum know what the answer may be or reference to what the modification actually was ?

    Thanks
    Alex

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    Default Re: Hawker Typhoon modification 293 ?

    Hi Alex

    Mod 293 will certainly be a fairly early mod number.

    According to wiki ...


    Carbon monoxide seepage
    The first problem encountered with the Typhoon after its entry into service was the seepage of carbon monoxide fumes into the cockpit. In an attempt to alleviate this, longer exhaust stubs were fitted in November 1941 ("Mod [modification] 239"), and at about the same time the port (left) cockpit doors were sealed. The Pilot's Notes for the Typhoon recommended that "Unless Mod. No. 239 has been embodied it is most important that oxygen be used at all times as a precaution against carbon monoxide poisoning."[55] Despite the modifications, the problem was never entirely solved, and the standard procedure throughout the war was for Typhoon pilots to use oxygen from engine start-up to engine shut down.[56] In addition to carbon monoxide seepage, pilots were experiencing unpleasantly high cockpit temperatures; eventually a ventilation tube helped alleviate, but did not solve the problem. In addition two small, rear opening vents were added below the port side radio hatch, just below the canopy
    edit - sorry I do not go on 12 o clock forum - you have obviously seen the wiki page :)
    Last edited by bvs; 13th July 2022 at 13:13.

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    Default Re: Hawker Typhoon modification 293 ?

    Hello bvs,
    No problem, glad to have any thing that may help answer the question.
    Alex

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    Default Re: Hawker Typhoon modification 293 ?

    Hi,

    https://en.wikipedia.org/wiki/Hawker...n#cite_note-66

    "Unless Mod. No. 239 has been embodied it is most important that oxygen be used at all times as a precaution against carbon monoxide poisoning."[55]

    55) Air Ministry 1943, p. 13.

    http://www.theshermantank.com/wp-con...ilot-Notes.pdf

    p. 13

    "Unless Mod. No. 293 has been embodied it is most important that oxygen be used at all times as a precaution against carbon monoxide poisoning."

    Regards

    Mojmir

  5. The Following User Says Thank You to vrajm For This Useful Post:

    Alex Smart (14th July 2022)

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