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Thread: "Type 423" Wellington modification

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    Default "Type 423" Wellington modification

    Hi All. Any Wellington specialists out there?

    Can anyone tell me exactly what the "Type 423 modification" to Wellingtons entailed. I've come across the reference in an ORB where the "A/c type and serial" column shows in a few instances something like: "423 / 1234" rather than the usual "Mk Ic / 5678" or even just "Z5678". I can see that the 4-digit latter half is the numerical part of the a/c's serial number.

    Have Googled for this and found that it was the modification to enable those Wimpy's to carry a 4,000 lb bomb, but I'm not sure exactly what it would have entailed. Anyone got any ideas? Was the basic Wimpy bomb bay compartmentalised and that had to be re-designed? Or maybe it was strengthening fitted? (I've seen references to a "bomb beam" for the Wellington). Or was it just changing the bomb clasps to hold a 4k monster?

    Also, were these "Type 423"-modifications something that was done to Mk II Wimpy's (only?), or was it a mod that could be done to Mk I's as well? I guess it could be done to either mark but unfortunately there doesn't seem to be a definitive book around on the Wellington like there is on say the Stirling or Lanc.

    If no-one knows maybe it'll mean a mosey over to Brooklands to see if they can advise there.

    Thanks anyway, in anticipation.

    Ian

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    Default

    I'm not a specialist on the Wellington, but a bomb beam implies a piece of structure put in to carry and spread the weight of the 4000lb bomb. The original Wellington was not stressed to carry any such single heavy bomb.

    I suspect it also meant that the aircraft had the central bombbay doors removed, as the bomb would protrude below the belly of the aircraft. As on the Halifax with this weapon - I don't recall seeing anything about the 4000lb bomb on the Stirling.

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    Default bomb beam

    Hi
    There is a very small piece in the wellington 4+ book, apparently first trial was in early 1941, and the mod was available for all marks inc/after the MKII, ( inc IC )
    There is a small sketch on page 68, I am busy for a few days, but could send you a copy.
    PM me.
    cheers
    Jerry

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    Default "Type 423" Wellington modification

    Graham, Jerry

    Thanks very much chaps. It sort of confirms what I'd anticipated and provides me with a bit more info. Jerry, if you could send me a copy of anything that'd be great. Whenever you have the time. My e-mail is ian DOT hunt29 AT btinternet DOT com, changing the usual and losing the spaces.

    Another question answered by the all-knowing Forumites team!

    Regards

    Ian

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    Default mod 423

    Hi
    e mail sent if not received let me know.
    cheers
    Jerry

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    Default "Type 423" Wellington modification

    Hi Jerry

    Received. Many thanks.

    Ian

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