Howard, did you have to use the RB pad shims with the 700/800 pads?

 

that's great to hear about the 700's. I chose them hoping that I could get away with them for my primarily street driven car without too much dust or noise... but as I am getting into local DE and other track events I dind't want to be switching pads back and forth.

thanks for the update.

 

Double post.. sorry

 

THANKS for that info Howard!... as ET700 was my choice of pads.

 

i just returned from another tuning run and do need to report i got a squeek out of the 800s. it happened twice in a 35 mile run. what is weird is that i can't force it to happen. since it doesn't appear to happen very often it won't be a factor for me.

hc

 

re shims for the 700-800.......

there are none.

hc

 

re:shims - thanks HC!!

 

This is probably a question best answered by Racing Brake but, how much more will the 700s wear the rotor compared to the 500s?




Thanks Howard for taking the time to test this for us.

 

Great feedback thus far Howard. Can't wait to hear similar findings after some testing on the track.

 

monday...

i plan to do about 250 miles on the 800s today. up to green bay to help a friend skinny his wiring harness.

hc

 

Awesome...I'll let you guys be test dummies before I look into buying! HAHA! So far things look great. HC how do you compare this setup to your old setup?

 

back from green bay...

i figured out when the 800s squeek... whenever your trying to be cool. no squeeking at any time on the 200 mile trip other than when i pulled into a gas station. squeeeeek. well there goes my image whatever that might be.

as to a comparison w the APs... more stopping power and definitely more power in the rear which is VERY welcome.

better able to ride the edge too.

i am going to do the ET500s tomorrow. and call Blackhawk re a test day.

hc

 

HC you're the freakin` man! Better than AP sounds good to me!

 

today the plan is to retain the 800s in the rear and change the fronts to 500s and 700s.

as far as the AP setup... remember the rotor was only 1.1something.... the RB rotor is 1.26 inches thick along w a higher carbon content etc

hc

 

Do you still recommend the 800's for a combo track/street car? Did the squeeking get annoying?

 

it is too early to come to a conclusion on the squeeking. as i said, they squeeked once on my 220 mile trip that was about 150 highway...

currently we have a bigtime rain deal here so i won't get out until later. i plan to do 500/800 front and rear and will mix them up a bunch in the next few days and hope to have some conclusions re street ability.

the 500 thru 800 do work great on the street... the squeek factor is my concern.

hc

 

Squeeking sucks!! My HP plus pads sound like a train coming to a stop...so anoying but I am too lazy to switch pads for street use.

 

I can relate - every day for the past month my rear pads have been rust-bound to the rotors when I back out of the driveway. Fort Worth had six inches on rain today.

 

Damn, six inches?

 

I would like to know the coefficient of friction of the different RB pads.

My car is not tracked but occasionally driven hard on the street. This applies to the following facts.

With my previous stock brakes, I had run all Hawk HP+. Liked them except for the corrosive material, and that the balance was biased to the front. Squeaking was not a problem for me. Then I went to EBC RED on front and this helped to even up the balance. They required more heat to work as well but once heated they seemed smoother than the HP+. Overall braking was improved.

Then I installed my RB stock front 2 piece replacement rotors along with the RB large rear kit. I installed all new EBC REDS. The balance was better than before and stopping was again improved.

While breaking in the new brakes, I had to replaced my 4 old 255/40-17 tires (rubbed the liner too much for my liking in the front) with 245/40-17 front and 275/40-17 rear (needed more rear traction). This transferred the brake bias back to the front and the front was heating up a lot more than the rear. The rears were not working enough. EBS REDS are listed as a .50 COF.

Now I had to start playing with pads. My only and current test was to keep the EBC REDS on the front and put RB ET500 on the rear. The brakes are now the best I have ever experienced and when pushed the heating on front and rear are very equal (I am going by the color change of the rotors after hard braking).
The only negative is that the EBC REDS have to be warmed up to to work well in normal traffic.

It appears that I am the only one currently experimenting with this RB setup.

That is why I would like to know more about COF. Maybe I need ET500 front and ET700 REAR to have the best of cool and hot braking?????

 

Ditto Charles. i will see what i come up with.

hc

 

Maybe we should set a standard for running brake tests. Then we could use the Datalogit for those of us who have it, and log 60 - 0 or 80 - 0 stopping times.

I was getting ready to do something like this as my new brakes really impress me.

 

i think tires, bushings, alignment, ride height, static weight distribution, ABS or non ABS, air pressure would intercede w objective findings unless, it was done w the same car and on a constant road surface. but the DL thing could work....

of course you have all the GPS related stuff out there today and at cheapening prices.

i just did a run w the 500s front and 800s rear. my guess is there isn't alot of coefficient of friction difference between the pads. i didn't notice alot of performance difference doing repeated panic (threshold) stops from 80.

i am continuingly amazed at the POWER and CONTROL of the RB system.

i did notice no squeeks. BTW, the squeeks have only come from the fronts so far. and to be objective there haven't been alot of squeeks w the 800s.

Warren is sending me some 300s also. i believe he says No squeeks whatsoever on these...

i will endevour to check on friction coefficients.

hc

 

That doesn't stop Car & Driver/Road & Track/etc from doing similar tests between dufferent . I know what you mean, but we can't afford that.

I logged four stops, starting with normal warmed up brakes from normal 0-45mph driving in the local area. Since I run 275/40-17 rears as compared to 225/50-16 rears, my 60mph might be a bit higher. Using some Tire Rack data, my 60mph might be 62mph. I haven't been around any FYI radar units lately for testing.

Since the PFC/DL is in kmph, I started the braking from around 100kmph, and took the DL log time from 97 down to 0 kmph (60mph = 96.56kmph). The results were: 3.435, 3.345, 3.375, and 3.405. For an average 3.39 seconds for 60-0 stop or should I say 62-0 stop.

 

I think you have to get these out on a real racetrack, doing laps for 20-30 minutes to really know what's what. I can't imagine repeated panic stops on the road (granted I don't live in the country like Howard does) are really going to tell you anything.

I remember doing the rotor break-in procedure for my StopTechs which required repeated high speed stop in succession, and the Axxis Ultimate pads felt GREAT, no fade, etc.... I though, "great" maybe their cool for light track duty now that I've got big brakes. WRONG. I went out to Summit Point and they were fading within a lap or 2.