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  1. #261
    Join Date
    Nov 2014
    Posts
    578
    Country: Bulgaria

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    One thing I never understood on those old heavy Tanns is in the boltwork. Why did they have the locks operating live AEDS, but without an actual interference point with the bolt?

    I am sure there must have been a reason if Tann did it, but what is the reason?

  2. #262
    Join Date
    Sep 2007
    Location
    Aberdeenshire
    Posts
    324
    Country: Great Britain

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    Quote Originally Posted by Chubby View Post
    One thing I never understood on those old heavy Tanns is in the boltwork. Why did they have the locks operating live AEDS, but without an actual interference point with the bolt?

    I am sure there must have been a reason if Tann did it, but what is the reason?
    Chubby, I was not until about 1980 privvy to the design thinking in Tanns but there could be a clue in that the first boltwork designs in Stratford and leading through to Tann, used the lock solely as a servo mechanism for the live re-locker and not necessarily in it's own right.

    The reasoning as I see it is that at the time explosive attack was at it's height and when the lock is blown anything in the proximity is also likely to suffer so the re-locker placed some distance away and more firmly attached to the door plate than the flimsy lock bolts is more likely to survive.

    The Tann locking changed by the 1980's in the TS ranges where the live re-locker was placed well above and out of danger working in conjunction with the keylock which was also active in the bolt plate.

  3. #263
    Join Date
    Nov 2014
    Posts
    578
    Country: Bulgaria

    Default

    It's interesting to hear that.

    Of course some Stratford AEDs were set very close to the lock- I am thinking of the little see saw live AEDs.

    I am a big believer in long drives for AEDs putting them well away from the main action.

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