I love these subjective opinion arguments...nothing like data to make a statement stick. I don't ever plan on testing the fade resistance of my restored "S" binders but no doubt they look more sexy then the late iron calipers I am replacing.
I love these subjective opinion arguments...nothing like data to make a statement stick. I don't ever plan on testing the fade resistance of my restored "S" binders but no doubt they look more sexy then the late iron calipers I am replacing.
MichaelQuote:
Originally Posted by michaelaiellosr
No one can argue your point on the "look". If that is why you are replacing a superior caliper with an inferior one, I have no problem with that. Fade resistance is not the issue, either. Pure stopping power and pedal feel is the issue. I have years of hands on experience with both calipers and I choose to have ugly, heavy calipers on my car.
Regards
Jim
These are the "old" calipers that are being replaced by the new black S calipers.
A set of freshly rebuilt (by PMB) A calipers that weigh literally a ton.
I'll keep these on the shelf in case I change my mind about the S calipers....doubt it though.
Attachment 443497
Doug, you are such a trouble maker:D
It's true....you are most correct.Quote:
Originally Posted by A914Man
I buy thatQuote:
Originally Posted by Jim Breazeale
I'm not buying the flex. There are so many parts to a brake system. There is no way for someone to isolate "flex" in a caliper by foot feel. flex in the pedal, brake lines, mounting points, floor pan, ect. if flex was such an issue on aluminum parts, why are most modern suspension and brake parts made from it.
I'm with ya 100% on not buying the flex.Quote:
Originally Posted by mepstein
Like I said, I club raced S calipers for many years and never experienced any issues with flex, fade, etc.
Here's what they're gonna look like installed on a set of RSR struts.
Stealthy...
Attachment 443702Attachment 443700Attachment 443701
DougQuote:
Originally Posted by skinnerd
First off, I love your suspension/brake setup.
So, you aren't buying the fact that those calipers flex?
They do, and there is a very simple test to prove it. Jack up the front of your car. Remove one of the front wheels. Have a person apply the brakes while you have your hand over one of your S calipers. Those calipers flex a bunch!
I'm guessing that your suspension is not back on the car yet, so maybe someone on this forum will perform this simple test for you and report their finding. Better yet, multiple people do it and lets get a larger sample size. The results will be 100% on the side of caliper flex. I don't think that it is any random coincidence that Porsche quit using S calipers at about the same time that they started boosting the brakes.
Regards
Jim
I am of the opinion that there are two factors (maybe 3 as a consolation to Jim) all things being equal of course..... 1. stopping distance, 2. fade resistance and its effect on stopping distance after repeated stops and 3. feel, perhaps a subjective, that correlates to confidence. The undisputed fact that the alloys flex is incidental to the first two. I raced PCA in the 90's in a stock '77 2.7 with iron brakes. They worked and inspired confidence at Lime Rock, Mid Ohio, Bridgehampton, Pocono and Sebring...both long and short tracks. I have no racing experience with the S calipers.
The only way to determine the outcome of this so far civil discussion, not likely to happen, is a track test on the same car....actually 2 different cars. One being relatively light weight, say 2000lb and the other in the 2500 lb region. Obviously, the factory determined that there is a limit to just how much mass can be reliably supported by the relatively small S caliper.Attachment 444034