Contact US

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.

Students Click Here

sway bar sizing

sway bar sizing

sway bar sizing

Anybody know how to properly size sway bars without alot of experimenting.  I had some formulas written down in my notes that went over torsion rates, lengths, and diameters but I can't find them.  I spent over two hours trying to find them on the internet and no luck.  Any help would be greatly appreciated.  Thanks in advance.

RE: sway bar sizing

Do you just want the approximate torsional rate - that's easy.

G=shear modulus
M=lever arm*force
L=length of torsional section


torsional stress=M/Wt

angular rotation=L*M/(G*I) in radians


Greg Locock

RE: sway bar sizing

Thank You.  That is all I need.  I appreciate the help.  I am very happy to to have found a forum with intelligent members where I can get a straight answer.  Thanks again.

RE: sway bar sizing

  There is a very good book on basics of anti roll bar design by Fred Puhn of San Diego.  I think it's "How to Make Your Car Handle"  published by H.P. Books  out of Tucson.  It's been many years since I looked at it but as I remember it cut through all the BS of bar design and race car suspension setup.  It is a difficult at best job to do without a lot of trial and error.  


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! Already a Member? Login


Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

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