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  1. #1
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    71mm LYRAN Illumination Mortar.

    I found information on this Bofors designed 71mm Lyran Illuminating mortar shell as used on AFV's and by Infantry and Navy.
    Apparently the mortar can also fire HE and smoke shells too. Used from mid 1960's.
    The fuze has a safe position and 1, 2 or 3 dots for different range settings . (info from the net).
    What is missing from the fuze centre on this example? I could not find any photos of the shell to compare.

    Lyran 71mm a.jpgLyran 71mm b.jpg

  2. #2
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    Here is a drawing :

    Image4.jpg

    Cheers,

    S.

  3. The Following User Says Thank You to sgdbdr For This Useful Post:

    ron3350 (19th June 2022)

  4. #3
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    And a description of the system :

    Image5.jpg Image6.jpg

  5. #4
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    Swedish Drawing
    Attached Images Attached Images

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    Nabob (19th June 2022), ron3350 (19th June 2022), sgdbdr (19th June 2022)

  7. #5
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    Quote Originally Posted by ron3350 View Post
    I found information on this Bofors designed 71mm Lyran Illuminating mortar shell as used on AFV's and by Infantry and Navy.
    Apparently the mortar can also fire HE and smoke shells too. Used from mid 1960's.
    The fuze has a safe position and 1, 2 or 3 dots for different range settings . (info from the net).
    What is missing from the fuze centre on this example? I could not find any photos of the shell to compare.

    Lyran 71mm a.jpgLyran 71mm b.jpg
    Hallo @ron3350,
    there seems to be nothing missing from your fuze. The square hole in the center seems to be a keyhole for setting the fuzedelay. Switzerland also introduced this model and manufactured it in licence from Bofors. The interesting thing about this fuze is, that it uses the same system as the 150 year old belgian Bormann fuze with a horizontal powder train delay. Attached are 2 fotos from the nice swiss book "The Fuzes Of The Swiss Army"(in german)
    Bellifortis.LYRAN-Bofors-Bormann Fuze.jpg7,1cm 74 LYRAN.jpg

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    ron3350 (19th June 2022)

  9. #6
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    I now understand a lot more about this mortar so thanks to everyone. Ron.

  10. #7
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    Quote Originally Posted by sgdbdr View Post
    And a description of the system :

    Image5.jpg Image6.jpg

    I may not work for Jane's/Janes any more, but this would seem to be a page scan from one of their publications, which is copyrighted.

  11. The Following User Says Thank You to Eggburt1969 For This Useful Post:

    Nabob (19th June 2022)

  12. #8
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    Box set.

    Lyran box.jpg

  13. #9
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    Quote Originally Posted by Ruuti View Post
    Box set.

    Lyran box.jpg
    And on the picture of Ruuti, you can see in the middle of the lid of the container the setting key of the fuze


    Yoda
    Any live or dug ordnance presented by me has been disposed of by EOD technicians.

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    ron3350 (8th July 2022), spotter (8th July 2022)

  15. #10
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    Quote Originally Posted by sgdbdr View Post
    And a description of the system :

    Image5.jpg Image6.jpg
    I would not like to fire this mortar. The crotch of the shooter is touching the bottom of the barrel, where the firingpin is fastened. I think that the system is safe to use, but having your crotch touching the explosion chamber would have desastrous results on a catastrophic malfunction.

 

 

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