Re: Anti-Swaybar theory. Quick Lesson please. E-body.
[Re: cudabitten]
#1180640
02/18/12 04:17 PM
02/18/12 04:17 PM
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Joined: Feb 2010
Posts: 1,645 Phila. Pa.
Mattax
top fuel
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top fuel
Joined: Feb 2010
Posts: 1,645
Phila. Pa.
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A 'sway bar' is more correctly called an 'anti-sway' bar, and also goes by some other names. They provide no additional load carrying capacity, but reduce lean in corners. However in doing so it also puts more load on the outside tire, and on rough pavement may reduce traction by lifting the lower wheel. Generally add or increase the front bar first, and or increas a rear bar second. It is generally safer to have a front tire exceed its traction than a rear tire. Because.. When front tires exceed traction the car keeps going forward, When rear tires exceed traction the rear of the car goes forward faster than the front (fishtail and spin) Off roaders (four wheeling) usually disconnect them if the vehicles have them. Street use, and most dirt and paved racing use them to some extent to reduce roll which helps many things. For the How and Why, go grab one of those books recommended in the post "Where to start, A reading list"
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Re: Anti-Swaybar theory. Quick Lesson please. E-body.
[Re: cudabitten]
#1180643
02/18/12 08:12 PM
02/18/12 08:12 PM
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Joined: Jan 2003
Posts: 31,045 Oregon
AndyF
I Win
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I Win
Joined: Jan 2003
Posts: 31,045
Oregon
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Quote:
Hey, just looking for some knowledge on how they work. Front and back. Thanks.
They are basically just a cross ways torsion bar.
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Re: Anti-Swaybar theory. Quick Lesson please. E-body.
[Re: 5spdcuda]
#1180644
02/18/12 09:22 PM
02/18/12 09:22 PM
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Joined: Jan 2003
Posts: 27,468 So Cal
autoxcuda
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,468
So Cal
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Re: Anti-Swaybar theory. Quick Lesson please. E-body.
[Re: 5spdcuda]
#1180646
02/18/12 11:59 PM
02/18/12 11:59 PM
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Joined: Jan 2003
Posts: 27,468 So Cal
autoxcuda
Too Many Posts
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Too Many Posts
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Posts: 27,468
So Cal
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Quote:
That 75 mph kink might not have been so bad if the bump hadn't been there to unload the suspension. I'll bet it got your attention though. I tried running a rear bar in the 'Cuda, but it was just too "busy". I can see where with your level of experience using a light rear bar on a tight circuit could be beneficial in getting some rotation. As for going flat through the "kink" at Road America, I think those guys must have to get size xxx large when shopping for athletic supporters. Not sure what the gals wear.
Yes it got my attention! I was in the wrong placement on the track. Plus I got on it too much, too early with the new big motor.
I really needed to be more over to the right where the bump is not so pronouced. The bump actually fans out to the left. It's a notorious spot on Big Willow that bites quite a few. The instructors go over this every time. I certainly got bit!
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Re: Anti-Swaybar theory. Quick Lesson please. E-body.
[Re: Mattax]
#1180647
02/19/12 01:35 AM
02/19/12 01:35 AM
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Joined: Feb 2010
Posts: 18,493 Granite Bay CA
Kern Dog
Striving for excellence
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Striving for excellence
Joined: Feb 2010
Posts: 18,493
Granite Bay CA
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Quote:
They provide no additional load carrying capacity, but reduce lean in corners. However in doing so it also puts more load on the outside tire,
I see it differently. The stiffer sway bar makes the car sit closer to level in a turn, which spreads the cornering force some FROM the outside wheels to the inside.
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Re: Anti-Swaybar theory. Quick Lesson please. E-body.
[Re: Kern Dog]
#1180648
02/19/12 11:01 AM
02/19/12 11:01 AM
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Joined: Feb 2010
Posts: 1,645 Phila. Pa.
Mattax
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Phila. Pa.
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You can see it differently but the physics doesn't change edit When taken too far the inside wheel will lift off the ground. This is the big bar, soft spring as described by 5spdcuda. It's not just theory, this actually happens in some instances during competition. For street most people just notice the flatter more predictable driving. In all seriousness, at your level of interest Frankenduster, you would really enjoy any of those books on the reading list. I'm going to add a magazine article to the reading list which involves adding a sway bar to a circle track car. It doesn't do the physics, but describes what is happening based on the data (photos, tire temps and lap times).
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Re: Anti-Swaybar theory. Quick Lesson please. E-body.
[Re: Mattax]
#1180649
02/19/12 02:48 PM
02/19/12 02:48 PM
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Joined: May 2003
Posts: 96,662 On The Boat, On The Lake, Wa. ...
amxautox
Still Retired. Still Posting on Moparts. A Lot.
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Still Retired. Still Posting on Moparts. A Lot.
Joined: May 2003
Posts: 96,662
On The Boat, On The Lake, Wa. ...
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Yes the right rear tire is off the ground, about 1/2". I have a 22" x 32" picture of it that the photog gave me for helping him - safety car spotting during the event so he didn't get run over in case of a spinout - ..
New but stock spring rate for a Go Pack car, rear leafs. 300# per " coils up front. .750" dia rear bar and 1.130" dia front bar. 3,100 car weight, 97" wheel base. Bars made by the guru of AMC and designed for the AMX. Called Gymkana Bars.
Tom
"Everyone should believe in something; I believe I'll go fishing."
-Henry David Thoreau
Men and fish are alike. They both get into trouble when they open their mouths
author unknown
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