Small problem - by reducing the Coeffecient of Froction you reduce traction and increase slippage - we all understand this.
You will get to 50 mph on dry pavement sooner than on snow, and stop in a shorter distance. No one debates that at all.
However, without changing anything about the vehicle - at 50 mph the stopping distance will remain constant for a vehicle. If you make a chenge to the vehicle, the stopping distance may change, but will again remain a constant until anopther variable changes.

So why do I mention this: because you contend the RTI video experiment is worthless because it was done on pavement.

Repeat the RTI experiment on dirt (.3 CoF) and you are right, the X will not go as far up the ramp as it does on asphalt (.8 CoF)
However, that is true for both shackles.
That is because the CoF changes between the tires independantly of the shackle - so the stock shackle and the revolver shackle both have a lower CoF which means both will lose traction sooner and both will go a short distance up the RTI ramp.
Since the shackle was the only difference in the video, we know that the Revolver shackle goes farther up the RTI ramp than the Stock shackle under the same conditions, thus the Revolver shackle will go farther up the RTI ramp than the Stock shckle on the same surface.

So your argument that a Revolver4 shackle reduces traction is Bullshit. Saying your coparing a spring pack to shackles is also lame - especially since you said Revolvers reduce traction a number of times.

BTW JeffW - I like how you keep repeating eveything as if it is fact.
Reminds me of the President and how he reatedly said Saddam had weapons of Mass Destruction and was working with Al Qaeda. He also said that he had lots of evidence to proove his argument - which we've still never seen.
Say it enough times, it still doesn't make it true, despite the number of people who will begin to repeat what you post as if it is.

Oh, and anyone can post anything on the internet...internet sources (especially .com) of information aren't necessarily realible or true.