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      06-25-2018, 11:47 PM   #23
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admranger is probably handling the car very efficiently though :P
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      06-26-2018, 10:14 PM   #24
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Quote:
Originally Posted by kpewpew View Post
admranger is probably handling the car very efficiently though :P
"Efficiently" is a euphemism for "slow", I think...

Remember, I'm not trying to set HPDE lap records every time I go out like you young whippersnappers.

Getting that last tenth is hard on the brakes, especially since it can result in over braking (or romping and stomping if you're into the red mist chasing down the ar in front of you).
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      06-26-2018, 10:17 PM   #25
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Quote:
Originally Posted by admranger View Post
"Efficiently" is a euphemism for "slow", I think...

Remember, I'm not trying to set HPDE lap records every time I go out like you young whippersnappers.

Getting that last tenth is hard on the brakes, especially since it can result in over braking (or romping and stomping if you're into the red mist chasing down the ar in front of you).
Not what I meant

I meant a more experienced driver who's more in tune with things can brake less and brake smoother, putting less wear on than a less experienced driver who may be harder on equipment.

For a while I was trying to figure out late braking and slamming hard on brakes. I got smoother recently with brake engagement!
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      06-26-2018, 10:22 PM   #26
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Quote:
Originally Posted by kpewpew View Post
Not what I meant

I meant a more experienced driver who's more in tune with things can brake less and brake smoother, putting less wear on than a less experienced driver who may be harder on equipment.

For a while I was trying to figure out late braking and slamming hard on brakes. I got smoother recently with brake engagement!
I know, but I also know I'm not fast anymore.

If you need me, please holler. I'm just sitting in my study polishing all my HDPE world championship trophies.
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      06-26-2018, 11:52 PM   #27
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Quote:
Originally Posted by admranger View Post
Quote:
Originally Posted by roastbeef View Post
Oooffff! Yea, oem rotors can't handle laguna!
I ran 3 days there in August 2016 (when I still had a modicum of skillz) on stock rotors and NT-01's. No muss. No fuss. Think I ground off about 3 thousandths of an inch of rotor. New PF-08's.

Laguna is hard on brakes though. No question. Just don't stand the car on it's nose every braking zone and they'll be fine. Not optimal, but fine.
You're a more experienced driver and probably had DSC off.
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      06-27-2018, 06:13 PM   #28
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Quote:
Originally Posted by kpewpew View Post
Not what I meant

I meant a more experienced driver who's more in tune with things can brake less and brake smoother, putting less wear on than a less experienced driver who may be harder on equipment.

For a while I was trying to figure out late braking and slamming hard on brakes. I got smoother recently with brake engagement!
That is what I think it was. I'm going to start braking a bit earlier with a progressive pedal, rather than slamming all the way to a 10 pedal. Also, having a 200lb passenger doesn't help haha.
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      06-28-2018, 12:05 AM   #29
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Quote:
Originally Posted by roastbeef View Post
You're a more experienced driver and probably had DSC off.
Surprisingly, I run with Euro MDM on. It activates for me when I reverse into my parking spot at work, but yeah, I actually am a wuss and use (modded) nannies.

And did you just call me old?
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      06-28-2018, 07:13 AM   #30
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Quote:
Originally Posted by admranger View Post
Quote:
Originally Posted by roastbeef View Post
You're a more experienced driver and probably had DSC off.
Surprisingly, I run with Euro MDM on. It activates for me when I reverse into my parking spot at work, but yeah, I actually am a wuss and use (modded) nannies.

And did you just call me old?
Euro MdM is so good no reason to keep it off for the most part. IMO
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      06-28-2018, 08:19 AM   #31
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Just got three bottles of this stuff. Read the first line. I'm not at the HPDE to have fun.

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      06-28-2018, 09:07 AM   #32
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^ I switched from SRF to Endless as well.
One of the things I don't like about SRF is that its silicone based.

Here is an interesting fluids review.
https://thebuildjournal.com/tech-gui...view-analysis/
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      06-28-2018, 09:29 PM   #33
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Quote:
Originally Posted by CorruptCommie View Post
Just got three bottles of this stuff. Read the first line. I'm not at the HPDE to have fun.

:
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      06-29-2018, 12:25 AM   #34
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Quote:
Originally Posted by CorruptCommie View Post
Just got three bottles of this stuff. Read the first line. I'm not at the HPDE to have fun.

Does the bottle ever get empty?
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      06-29-2018, 02:26 AM   #35
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What's wrong with a fluid being silicone based? (I have no idea)

Did you guys notice a firmer pedal?
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      06-29-2018, 06:11 AM   #36
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Quote:
Originally Posted by roastbeef View Post
What's wrong with a fluid being silicone based? (I have no idea)

Did you guys notice a firmer pedal?
I was informed by a couple of tech sources that silicone is harder on seals.
I know there are lots of guys here using SRF with no issues, so hard to say if it's really a problem or not.

Normally I noticed no difference in firmer pedal when running typical 20 - 25 min. HPDE Sessions.
When we are at Watkins Glen we run 40 min sessions and noticed a difference.
The Glen is also a harder braking track than what I normally run. (Mosport)
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Last edited by inTgr8r; 06-29-2018 at 06:19 AM..
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      06-29-2018, 11:02 AM   #37
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Yea, it's hard to say... maybe years and years of silicone exposure can start to degrade, but by then, it's time to rebuild anyways. Sometimes things like that need context, and it's just something I know nothing about.
The testers in the study noted a firmer pedal with the endless.
I'm happy with SRF, but that is an interesting study.
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      06-29-2018, 12:23 PM   #38
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Yes it is interesting, but one thing that's missing is how they collected data.
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      06-30-2018, 02:01 AM   #39
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Quote:
Originally Posted by CorruptCommie View Post
Just got three bottles of this stuff. Read the first line. I'm not at the HPDE to have fun.

What's the volume of that can? It's cheaper than SRF on Amazon.
Thanks.
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      06-30-2018, 09:07 AM   #40
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Quote:
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What's the volume of that can? It's cheaper than SRF on Amazon.
Thanks.
500mL, which is half the size of the SRF bottle.
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      07-12-2018, 07:36 AM   #41
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Quote:
Originally Posted by inTgr8r View Post
I was informed by a couple of tech sources that silicone is harder on seals.
I know there are lots of guys here using SRF with no issues, so hard to say if it's really a problem or not.

Normally I noticed no difference in firmer pedal when running typical 20 - 25 min. HPDE Sessions.
When we are at Watkins Glen we run 40 min sessions and noticed a difference.
The Glen is also a harder braking track than what I normally run. (Mosport)
It is a hit and miss. If the silicone test (styrofoam cup) eats it, then it will attack the rubber. Varies in different products, but a chance too high to IMO when it comes with a brake system. For example, silicone lubes applied on the weather seals eats them fast (2 summers - dries them up), whereas Gummi Pfledge works like a charm. Would not chance it in a brake system. It is not the silicone per say that eats the rubbers, but the overall catalytic effects it has on third party substances destroying rubbers impregnated with silicone:

https://www.sae.org/publications/tec.../2017-01-0877/
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      07-12-2018, 02:07 PM   #42
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Love this stuff. Even Motul 600 wouldnt hold a candle and I would get it all mushy when pushing 9.9/10 (this is a time trial car which I would run in open track as well). For most stock caliper/rotor application, I have found fluid to be the weakest link (assuming you are on track pads). Even on the M3 when it was a DD, nothing worked better than the SRF; once a year flush as safety. On the M3 I boiled the fluid and it got a fair bit mushy but surprisingly "came back". Fluid did check out a bit dark during power flush but that was pushing it for a long time on the track with a passenger.

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      07-13-2018, 07:37 AM   #43
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Used Endless last weekend. I got second place in the instructor run group (passed by a ZL1 1LE), and won the advanced. Lap after lap the pedal was exactly where I wanted it. Ran an extended session and the brakes didn't fade until about 35 minutes in. Track was Putnam Park, front straight speed is ~130mph into a fast sweeper (min ~85mph).

I'm on freshly rebuild stock calipers with two piece rotors and DTC-60's. This was the first time in about a year I've ran a DE where I didn't complain about the brakes.
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      07-13-2018, 08:36 AM   #44
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where did you guys order the rf650? i've heard this and a few other brake fluids (torque, prospeed?) have really good compressibility, ie they don't compress at all
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