×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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

shift in spring leaf

shift in spring leaf

shift in spring leaf

(OP)
I am writing about leaf springs on the front axle of trucks.  I see that after a short run (unladen also !!) the second leaf from the top shifts to the side by approx 10 mm.  this causes it to hit the shackle. I find the U bolt torque to be OK.
I need help to understand if this is normal.  what holds the leaves in line.

RE: shift in spring leaf

I'd take another look at the u bolt and interleaf pads, if I were you. I'm not too sure how long a leaf spring you can have before you need strps around them to hold them straight, perhaps you've gone over that limit. I can't really offer much help - i've never worked on conventional leaf springs.



Cheers

Greg Locock

RE: shift in spring leaf

(OP)
Thanks Greg Locock,

Could the deviation on the camber on the leaves cause this ?.  My thinking is that if the camber of a particular leaf is less than the spec, the preload between the leaves could be lower causing the leaf to slip in service.  

Thanks.

RE: shift in spring leaf

It could, but then when the wheel goes into rebound the short leafs always tend to unload, so they could slip then. Anyway, if you think about it, relying on the leaf's preload to hold it straight is inherently unstable, the natural tendency would be for the leaf to skew round.

Cheers

Greg Locock

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


Resources

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