"The diagonal link is designed for racing applications only and works extremely well under those conditions"
"A diagonal link used on the street will fail, it's only a matter of time. The stress caused by the cornering of a street car puts too much bind and tension on the ends of the link and either the clevis or the rod end will fail, you just don't know when"
You aren't buying that are you?
By racing, I assume he is talking about good-old-boy, turn left at 180mph in a 3300LB race car. Underneath that car you will see two long trailing arms and coil springs. look under any pre-73 Chevy truck with coil springs and you will see what looks like the same two long trailing arms. On the truck you will see a axle locating rod/link/arm/bar attached to the frame on one side and to the axle on the other side of the truck. On the race car you will also see a rod/link/arm/bar, but this one is fully adjustable. The frame end can be moved up and down, the axle end can be moved up and down and the length of the rod(or what ever) can be adjusted. The rod ends probably have heim joints. The truck has rubber bushings and isn't adjustable. I can't remember having heard of anyone here having their truck axle locating arm fall off at 200mph or even at 200,000 miles.
You are trying to make a distinction between two different names that refer to the same thing.
Here is part of the first paragraph from the wikipedia web dictionary.
Quote
"Originally invented by the Panhard automobile company of France in the early twentieth century, this device has been widely used ever since."
History of the Panhard Bar [img]
http://upload.wikimedia.org/wikipedia/en/thumb/0/0b/Panhard_rod.jpg/200px-Panhard_rod.jpg[/img]
Full story of the Panhard company.
Panhard [img]
http://upload.wikimedia.org/wikipedia/en/thumb/8/81/PL_17_manual.JPG/200px-PL_17_manual.JPG[/img]
