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Thread: Training fuse

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    Training fuse

    Does anyone know which kind of fuse arrangement was used in M39 egg grenade with the training charge?

    A training charge screwed on normal B.Z.E.39 but without delay tube is not possible in use as the
    charge would go off at once when pulling the cord and If a delay tube is present it's too long.?

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    Re:Training fuse

    I have here the description of the Ei-39-practise grenade -Joerg
    Any live or dug ordnance presented by me has been disposed of by EOD technicians Gruß Joerg

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    doppz92 (26th April 2020)

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    Re:Training fuse

    Thanks Joerg

    The text says that training charge screws on DELAY TUBE of B.Z.E.39! However delay tube has 6mm thread at both ends, bungsladung 30 has 10mm thread, the same as B.Z.E 39 body has - thus when using the charge in egg grenades an adapter sleeve is needed to fit different threads together?????. Delay tube is too long and prevents from screwing the charge on fuse body thread.

    In stick grenade this is no problem as fuse ahd charge have both the same 10mm thread. Any Ideas!!!

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    Hey Jeeeensy, were you ever able to figure this out? I have the same dilemma and cannot find an answer either.

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    Thanks, but Lex does not show how the Übungsladung is actually attached to the fuze. In fact, his picture showing it attached is a completely different method than I have seen in other photos. I assume there was a small adapter, but perhaps there were also different types. I am looking for a picture or sketch of the adapter by itself to hopefully solve this mystery.

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    Nope, still does not show it. Here is jeeeensy's question from above that explains the problem, and I added a picture to illustrate it:

    The text says that training charge screws on DELAY TUBE of B.Z.E.39! However delay tube has 6mm thread at both ends, Übungsladung 30 has 10mm thread, the same as B.Z.E 39 body has - thus when using the charge in egg grenades an adapter sleeve is needed to fit different threads together?????. Delay tube is too long and prevents from screwing the charge on fuse body thread.

    In stick grenade this is no problem as fuse ahd charge have both the same 10mm thread. Any Ideas!!!
    Attached Images Attached Images
    Last edited by WWIIBuff; 24th April 2020 at 10:57 PM. Reason: Added picture...

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    Hello,
    At the bottom of the Ubungsladung main thread (10 mm), there is not a second thread (6mm) to receive the delay tube of BZE 39? I'm not sure but it's possible...

    DSC08483.JPG

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    doppz92 (26th April 2020)

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    Quote Originally Posted by Spgr30 View Post
    Hello,
    At the bottom of the Ubungsladung main thread (10 mm), there is not a second thread (6mm) to receive the delay tube of BZE 39? I'm not sure but it's possible...
    No, there is not a 6mm thread for the delay tube. As you can see in my picture above, the inside diameter of the Übungsladung stem is much larger than the diameter of the delay tube. Also, the delay tube is too long. The opening of the Übungsladung stem only goes as deep as the stem itself, it does not go into the interior of the Übungsladung bulb portion. The picture below shows the delay tube inserted into the stem as far as it will go.

    For the attachment method you show in your picture above, there must be a different delay tube made specifically for the Übungsladung that is shorter and has a 10mm thread adapter, or perhaps there were longer B.Z.E.39 fuzes made just for these.
    Attached Images Attached Images
    Last edited by WWIIBuff; 26th April 2020 at 02:46 AM.

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    Spgr30 (26th April 2020)

 

 
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