fot
[Top] [All Lists]

Re: sway bar

To: fot@autox.team.net
Subject: Re: sway bar
From: "Jack W. Drews" <vinttr4@geneseo.net>
Date: Fri, 18 Mar 2005 20:06:39 -0600
>Let's see if I can add further confusion to the sway bar discussion.


Visualize a U-shaped sway bar, with the corners square rather than rounded. 
Assume that the long middle part mounts to the chassis in two pillow 
blocks. Somewhere along the short end legs we fasten a link that goes to 
the suspension.

Now consider where along the short legs of the U we attach the connection 
(disregarding where we fasten it to the suspension and where we fasten it 
to the chassis - we're just talking about where the link fastens to the 
sway bar). Now, the closer to the bend that we fasten the link, the stiffer 
the overall bar. See Fred Puhn's book "How to make Your Car Handle", page 97.

Now consider where we fasten that connecting link to the lower a-arm - 
closer to the wheel or closer to the chassis? The answer is that the closer 
to the wheel it is attached, the more effect it will have on the handling 
(that is, the stiffer the system will be). That's because, in part, if a 
car's spring rate and center of gravity height want to make the car roll 
at, say, four degrees, the outer end of the a-arm will move further than 
the inner end. This will try to twist the bar more, in effect making the 
bar system stiffer. A brief statement is in Carroll Smith's book "Tune to 
Win', page 68.

<Prev in Thread] Current Thread [Next in Thread>