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!
  • Students Click Here

*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


Vintage race car leaf spring setup

Vintage race car leaf spring setup

Vintage race car leaf spring setup


Hi everyone

I'm looking to build a vintage monoposto style race car and would like leaf suspension at all corner just to fit the vintage vibe of it.

For the rear axle to potentially avoid using a shock absorber could one mount two quarter elliptical leaf spring packs above and below the axle but with opposing flex as in the attached?

In my (probably delusional) mind, this would stop the need for shocks as upward axle travel would be counteracted by the opposing leaf spring.

Thanks in advance everyone.

RE: Vintage race car leaf spring setup

No. Even if I could understand that drawing, it would probably behave more like a jounce bumper than a shock absorber. For a vintage car you probably need a friction style shock absorber. You may get away with the internal friction between the leaves of the leaf spring. You might prefer the look of a lever arm shock as used in the MGB, which have been around for 90 years.


Greg Locock

New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?

RE: Vintage race car leaf spring setup

If each of those springs is pivoted at brackets welded to the axle, you'd be approximating a parallel 4-link suspension that might not need an additional link for lateral location. I suspect that would mean a smaller amount of axle roll steer than with a single quarter-elliptic clamped at the axle and less 'twitchy' behavior than, say, an early Austin-Healey Sprite with a single quarter-elliptic per side. You'd probably want to orient both of them as shown for the bottom pack, as increasing the load on that pack is trying to unload its fractional leaves. Perhaps make the top spring a single leaf - or even pivot it at both ends - because it really doesn't have to carry any weight and only has to sort of look like it might.

Relying on inter-leaf friction alone for damping would probably result in a harsh, jiggly ride and poor control over tire loading. I'm sure there's films of Henry Ford's earlier efforts that can demonstrate this.


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!


White Paper: Rapid Manufacturing with FDM
The automotive industry is increasingly turning to additive manufacturing, and fused deposition modeling (FDM) specifically, as a reliable alternative to traditional metal-cutting methods, like milling, turning and boring. Download Now
White Paper: Revolution in Design
Open up new possibilities for your business by changing the way you think about product development. Compared to traditional methods, 3D printing offers advantages that allow you to make more innovative products and get them to market faster. 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