Rear Sway Bar
Race Director
Joined: Jul 2001
Posts: 15,892
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The rods essentially wear out no sooner than a coil or leaf spring would as the total amount of movement is well within the plastic deformation range of the material. The low cycle fatigue life is probably in the multi- millions and the bar will out live the remainder of the car. In the case of Corvettes, the anti-roll bar is put under torsion only under hard cornering, it has no effect then the car is going straight and a surface irregularity deflects both wheels a similar amount. The small exception to that is the deflection of the locating bushings which themselves add slightly to the torsional resistance of the assembly. This is lost when poly bushing are substituted, but we won't go there..........
Race Director
Joined: Jul 2001
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http://www.youtube.com/watch?v=LR7Sg0WK5Fw
Thread Starter
Drifting
Joined: Oct 2010
Posts: 1,972
Likes: 6
From: Chester Virginia
As in...
Kidding aside I imagine a pretty good engineer thought up the torsion bar transferring forces. Most of us laymen who can follow it might not have been to quick to understand how to do what those rods do.
Actually, I as you do understand what mike means...lots of metalurgical properties to weigh, measure, calculate given the use. We used to test a lot of aluminum with those tests to meet aerospace needs including even casting one alloy with lithium in it. That casting of ingots was potentially very explosive. Back in those days they were so sophisticated in aluminum metallurgy for wings and structural plane parts they were not only worried when the metal would exceed it's elastic limits and crack but how fast the crack could be made in a controlled way to propogate.
Lance P.
Instructor
Joined: Oct 2006
Posts: 127
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From: Monroe Washington
Handling
"yes, dear. I am so pleased you were at Talbots today and stressed your credit card just past its "plastic deformation range."
Kidding aside I imagine a pretty good engineer thought up the torsion bar transferring forces. Most of us laymen who can follow it might not have been to quick to understand how to do what those rods do.
Actually, I as you do understand what mike means...lots of metalurgical properties to weigh, measure, calculate given the use. We used to test a lot of aluminum with those tests to meet aerospace needs including even casting one alloy with lithium in it. That casting of ingots was potentially very explosive. Back in those days they were so sophisticated in aluminum metallurgy for wings and structural plane parts they were not only worried when the metal would exceed it's elastic limits and crack but how fast the crack could be made in a controlled way to propogate.
Lance P.
Kidding aside I imagine a pretty good engineer thought up the torsion bar transferring forces. Most of us laymen who can follow it might not have been to quick to understand how to do what those rods do.
Actually, I as you do understand what mike means...lots of metalurgical properties to weigh, measure, calculate given the use. We used to test a lot of aluminum with those tests to meet aerospace needs including even casting one alloy with lithium in it. That casting of ingots was potentially very explosive. Back in those days they were so sophisticated in aluminum metallurgy for wings and structural plane parts they were not only worried when the metal would exceed it's elastic limits and crack but how fast the crack could be made in a controlled way to propogate.
Lance P.
http://www.guldstrand.com/gtheory.asp
Ron
Thread Starter
Drifting
Joined: Oct 2010
Posts: 1,972
Likes: 6
From: Chester Virginia
Excellent article. At VIR I spent one 25 minute session riding as passenger with a professional driver pushing a pacing car to its max to see what it was like rather than driving my own as I did the other 25 minute sessions that day. He pushed the car much harder than I did mine and the single thing that impressed me the most was the g forces feeling on my body sideways in turns he took at 20-40 mph faster than I was willing to throw my 76 Vette into corners. It was as an analogy like a flight in a fighter jet or the best roller coaster ride you ever had hopefully minus the upside down parts. Lots of sideways force on your body..lots and lots...in corners.
Lance. I also agree that their engineers are more capable than their marketing staffs....
Lance. I also agree that their engineers are more capable than their marketing staffs....
