Results 1 to 10 of 56

Thread: 3d Watch Mechanism D&D Plot Device.

Threaded View

Previous Post Previous Post   Next Post Next Post
  1. #11
    Administrator Facebook Connected Robbie's Avatar
    Join Date
    Mar 2006
    Location
    Dayton, OH
    Posts
    3,877
    Blog Entries
    6

    Post

    I just figured out the 1:2 as you wrote that...10 tooth to 20 tooth no matter what the scale always matches up at 1:2

    The formula is -2*Z_Rotation for smaller gear having half the teeth...

    so whats the proper math for say 13 to 21 then?

    Its not (-1*(21/13))*Z_Rotation apparently

    Edit: I just made a 11 and 21 gear ratio...calculated by hand as 1.9090909090~...
    Punched in -1.9090909090*Z_Rotation, and it worked (but started to get off after about 30 rotations by a very small amount...thats still a result...

    BUT...when I tried (-1*(21/11))*Z_Rotation I get bunk...so I think maybe my parentheses are off?
    Last edited by Robbie; 09-15-2008 at 09:08 PM.
    Fantaseum (https://www.fantaseum.com)

    Robbie Powell - Site Admin

Posting Permissions

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