Welcome to the Inert Ordnance Collectors.
Results 1 to 6 of 6
  1. #1
    Senior Member
    Join Date
    Jun 2007
    Location
    INNISFAIL, TROPICAL NORTH QUEENSLAND, AUSTRALIA
    Posts
    602
    Images
    155
    Thanks
    98
    Thanked 600 Times in 145 Posts

    Japanese Navy Type 91 Mod 1 Torpedo Gyroscope

    Hi Folks,

    Here is a Japanese Navy Type 91 Mod 1 Torpedo Gyroscope. It was made by Mitsubishi in Nagasaki. This gyroscope was used in the Type 91 Aerial Torpedo.

    They are a very interesting item and create a lot of intrigue.

    Jason pointed me to this this very interesting web site on Japanese Gyroscopes;

    http://www.geocities.jp/kyo_oomiya/gyro91.html

    http://www.geocities.jp/kyo_oomiya/gyro38.html

    http://www.geocities.jp/kyo_oomiya/gyro98.html

    http://www.geocities.jp/kyo_oomiya/gyro.html

    You will have to get Google Chrome to translate it from Japanese, great photos.

    Cheers,
    BOUGAINVILLE
    Attached Images Attached Images
    Last edited by BOUGAINVILLE; 29th April 2012 at 02:47 AM.

  2. The Following 2 Users Say Thank You to BOUGAINVILLE For This Useful Post:

    SG500 (29th April 2012), wichitaslumlord (15th March 2016)

  3. #2
    Premium Member
    Join Date
    Aug 2010
    Location
    Unfortunately Planet Earth
    Posts
    1,084
    Images
    10
    Thanks
    325
    Thanked 503 Times in 213 Posts
    Hi Robert,

    A superb find and example - another great piece for your collection!

    Cheers
    Drew

  4. #3
    Premium Member
    Join Date
    Apr 2010
    Location
    US of A
    Posts
    2,172
    Images
    21
    Thanks
    454
    Thanked 1,230 Times in 559 Posts
    Superb photography.

    Was honored to have this one briefly in hand. An awesome addition to the collection.

    You oughta show that transit. :-)
    Better to remain silent and be thought a fool than to speak out and remove all doubt.

  5. #4
    Senior Member
    Join Date
    Jun 2007
    Location
    INNISFAIL, TROPICAL NORTH QUEENSLAND, AUSTRALIA
    Posts
    602
    Images
    155
    Thanks
    98
    Thanked 600 Times in 145 Posts
    Quote Originally Posted by Slick View Post

    You oughta show that transit. :-)
    It was an overcast day with good diffused light and no shadows, so it was perfect for my photography. So I took the white sheets of cardboard outside and started snapping away. I should have the brass bolt that broke in transit restored by the end of the week. So I only took photos of the Theodolite and will photograph the tripod when the bolt is finished and I have the right light conditions.

    I have the photos that I took today edited now and ready for posting but first up must do some research and get some translations.

    Cheers,
    Robert
    Last edited by BOUGAINVILLE; 29th April 2012 at 03:17 PM.

  6. #5
    Senior Member
    Join Date
    Jun 2007
    Location
    INNISFAIL, TROPICAL NORTH QUEENSLAND, AUSTRALIA
    Posts
    602
    Images
    155
    Thanks
    98
    Thanked 600 Times in 145 Posts

    Japanese Navy Type 91 Torpedo Gyroscope

    Here is the latest edition to my collection. It is a Japanese Navy Type 91 Torpedo Gyroscope. This is different from the previous one shown which is a Type 91 Model 1.

    I like this one, it looks cool with the huge calibration dial on top.

    IMGP7390.jpgIMGP7388.jpgIMGP7402.jpgIMGP7396.jpgIMGP7407.jpgIMGP7412.jpgIMGP7416.jpg

  7. The Following 3 Users Say Thank You to BOUGAINVILLE For This Useful Post:

    apfsds (22nd March 2015), Big Dave (20th March 2015), wichitaslumlord (15th March 2016)

  8. #6
    Premium Member
    Join Date
    Nov 2009
    Location
    Wichita Kansas, U.S.A.
    Posts
    268
    Thanks
    652
    Thanked 339 Times in 75 Posts
    Hello Bougainville,
    Thanks for posting these wonderful pictures of your Japanese Gyroscopes. I am an avid collector of Japanese ordnance and other Showa Dynasty items but never thought that I would have the opportunity to own one of these. Two days ago, that changed and I am now the proud owner of a Type 98 Japanese torpedo gyroscope.
    The translation of the above document on the Type 98 is a bit jumbled but it appears that this gyroscope was used on submarine torpedos and surface ship torpedos. It boasts a highly efficient air driven (compressed oxygen) flywheel to allow for a greatly extended range over the earlier versions and this can be seen by a ring of very tiny air vanes in the center of the driven wheel as opposed to the much larger vanes in the ones pictured above. The air nozzle is also quite unique and has a tiny, focused orifice.
    My pictures are not nearly as good as Bougainville's but I hope you enjoy them!
    Thanks, Pat
    100_5821.jpg100_5820.jpg100_5819.jpg100_5815.jpg100_5812.jpg100_5813.jpg100_5822.jpg100_5817.jpg
    "Artillery Brings Dignity to What
    Would Otherwise Be Just A Brawl"

  9. The Following User Says Thank You to wichitaslumlord For This Useful Post:

    BOUGAINVILLE (20th March 2016)

 

 

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Back to top