Faded Tug-40 threading dials are proof of a merciful God
Close
Login to Your Account
Results 1 to 5 of 5
  1. #1
    Join Date
    Jan 2010
    Location
    Indianapolis, Indiana, USA
    Posts
    5,475
    Post Thanks / Like
    Likes (Given)
    2426
    Likes (Received)
    927

    Default Faded Tug-40 threading dials are proof of a merciful God

    In this post, I will provide proofs that the faded thread chasing dials of Andrychow Tug-40 lathes prove the existence of a merciful God.

    The first proof is the plate riveted onto the threading dial body; it makes a claim of the following TPIs:

    7 1/2
    10 1/2
    12 1/2
    15
    17 1/2
    21
    22 1/2
    25
    30
    45 (actually noted twice)
    50
    55

    Which are nowhere to be found on the quick change chart

    The plate also fails to suggest how to use the threading dial for the "1/8" TPIs on the quick-change chart.

    If the threading dial and plate had not faded to the point of being illegible, I fear that many machinists may have gone mad, attempting to select the above-mentioned threads.

    There is a God.


    In reality, the clever little 'rainbow' dial and the color-coded chart are basically confusing, since the threading dial pinion is 16 tooth, and the leadscrew is 4 TPI, resulting in one sweep of the dial over four inches of carriage travel, which is how most dials perform.

    If the chart and dial were readable, I fear many machinists would have gone mad, while trying to answer "what were these guys thinking?",

    Get yourself a Sharpie, mark the dial into the classic 8 divisions, and go cut some threads.

  2. Likes junker123 liked this post
  3. #2
    Join Date
    May 2017
    Country
    CANADA
    State/Province
    Manitoba
    Posts
    2
    Post Thanks / Like
    Likes (Given)
    1
    Likes (Received)
    0

    Default

    Thanks for the information.
    I recently purchased a Tug 40 engine lathe.
    It is a great machine but trying to make threads is a bit of a nightmare.
    I have been trying to get a simple 12 TPI but nave not been successful.
    Any idea what I am doing wrong?

  4. #3
    Join Date
    May 2017
    Country
    CANADA
    State/Province
    Manitoba
    Posts
    2
    Post Thanks / Like
    Likes (Given)
    1
    Likes (Received)
    0

    Default Threading on a Tug 40 lathe

    [QUOTE=junker123;2980784]Thanks for the information.
    I recently purchased a Tug 40 engine lathe.
    It is a great machine but trying to make threads is a bit of a nightmare.
    I have been trying to get a simple 12 TPI but nave not been successful.
    Any idea what I am doing wrong?[/QU
    Any help would be greatly appriceated.
    OTE]

  5. #4
    Join Date
    Dec 2015
    Country
    UNITED STATES
    State/Province
    Connecticut
    Posts
    259
    Post Thanks / Like
    Likes (Given)
    22
    Likes (Received)
    71

    Default

    Do you have to swap piles of gears out to get those weird threads?


    Sent from my iPhone using Tapatalk Pro

  6. #5
    Join Date
    Jan 2010
    Location
    Indianapolis
    Posts
    1,303
    Post Thanks / Like
    Likes (Given)
    745
    Likes (Received)
    404

    Default

    Unless the weird thread truly exists, that funky dial is a conversion of a metric dial, by someone with no familiarity with the inch system.

    Not sure if the standard complement of gears could create any of those threads.


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
  •  
2