My issues with Carbotech has not been the quality of the pads, it has
been the shoes for the rear drums. I have had a couple of failures where
the lining breaks up at the top or bottom edge, and once it starts
crumbling, it is game over. I got to the point where I was mixing and
matching shoes from different sets to actually get 4 shoes to wear out
evenly.
Last year there was a thread here about running stock linings on the
rear shoes, and the first thing in my head was that's nuts. But taking
into account where those racers were finishing, I decided the worst
thing that would happen is I needed to swap brake shoes in the paddock.
OK, I didn't go with the Moss Motors "who knows where they came from"
shoes, I went to Rock Auto and spent all the money on a set of genuine
Raybestos shoes, currently available for a whopping $32 plus shipping. I
ran them for the first time at Summit Point last weekend and they seemed
fine. Obviously, until I put eyes on them the jury is still out, but I
really didn't think I could tell any difference in stopping power. Most
importantly, my lap times were OK and consistent.
Thinking I probably had less coefficient of braking, I did nudge the
balance bar a tad to the rear, and after the first session where I did a
completely crap job of bedding them in, I never thought about them all
weekend.
Henry
On 2024-05-23 10:36, DAVE HOGYE via Fot wrote:
> I used Carbotech a few times for front pads. I had lots of problems
> with them. Quality control is/was terrible. The backing plate was
> ground down to the friction material at the sides of the pads and they
> were not square. So, there was far to much clearance in the caliper
> slot. This caused the piston to torque once the brakes were applied.
> This makes the pads wear at an extreme angle and the pistons were
> leaving a witness mark in the bore from the induced torquing and side
> load. The hot friction material was making contact with the caliper
> casting. I talked with Carbotech a few times about this and they were
> completely defensive and said they sell a lot of these pads and no one
> ever complained about this problem before. They were not willing to
> check quality control or make them correctly. I took many photos and
> some video of exactly what was happening and made a direct comparison
> to standard pads and Hawk pads. The standard pads were NOS from a
> quality manufacturer, which I can't recall at the moment. Standard
> backing plate have a pretty tight fit in the caliper. I think I found
> .010" clearance. I found that the Hawk pads have very consistent
> production quality. So I switched to Hawk. I did like the feel of
> the Carbotech pads, but they really caused problems.
> I'll share some photos and later.
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