INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Jobs

Triple differential transmission

Triple differential transmission

(OP)
Hi All,

I've been reading about the triple differential steering transmission and I can't seem to work out analytically how it is able to steer in it's own length. Am I missing something here? Does anyone know of a good,published, analysis I can look at?

I've attached my analysis based on the diagram in the below linked patent.

Thanks in advance!

https://www.youtube.com/watch?v=79ncOYcIUQw
https://docs.google.com/viewer?url=patentimages.st...

RE: Triple differential transmission

To turn in its own length, I assume the wheels on each side need to turn at the same speed but opposite direction. The ratios shown in the patent document seem to offer +8:-1 (L:R) at maximum steer. No doubt different output velocity ratios could be achieved, but I don't think +1:-1 is possible with the layout shown. It might be possible if the final differential was a bevel gear type.

je suis charlie

RE: Triple differential transmission

(OP)
Hmm. Well that explains why I can't seem to make the math work. I'll keep poking at it. Thanks for hte feedback.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close