How do you really determine ur brake setup is more effective?

[Jingers]

This proberbly wont apply to the people that upgrade from oem and leave it at that setup, but for people who upgrade from oem and then change later on how do you determine or find out that say your spoon/ap racing/jdm brembo/alcon is actually better then another?

Do you go by feel? do you try and brake from a speed and measure how many houses u have past? LOL

I know this perculiar question will be very hard to answer as not mayn people have gone with multiple aftermarket caliper setups on a pitcular car.

[Jingers]

to be simple lets just forget heat disspation/brake fade and talk completly about stopping power

[fueltank]

But to determine it's more effective....wouldn't you need to take in to account fade as well?

And then you'll need to consider brake compound as well. Was it from the same batch? Has a change in compound since been made since the last setup you ran.

I think you're probably better off taking surface temps of the rotors after certain number of laps.
See how hot they are.

power...how do you judge stopping power?
Even stock brakes can lock up street tyres if you jump on them.

[tinkerbell]

just test it.

in a country area - i find the roads around peats ridge to be excellent for this.

you need to do back-to-back testing, whereby you perform a series of measurable braking tests, record the results and then come back the next day with the alternative setup and repeat the testing.

[Danga]

Go to the track and if you previously broke at the 80m marker try an imaginery 60m marker and pray you stop in time?

[tinkerbell]

But to determine it's more effective....wouldn't you need to take in to account fade as well?

not when talking about "stopping power"

[fueltank]

Then maybe see how easy it is for you to lock up your tyres
That would tell you the power

[Jingers]

http://www.stoptech.com/company_info...hallenge.shtml

Have a look here, i poped this question after seeing this site, of course hundreds of factors vary the outcome ie tire allignment, weight of car, etc etc

but its interesting to read anyways, Its assumed the stock calipers perform better then others with semis on it?????? although its done on another day

[BlitZ]

if u dont take fade into the equation...
Wouldnt Gsi brakes almost stop as well as AP racing brakes.. jsut that Gsi would proabably lock easier in the wrong hands

Based on the assumption that the tyres are the weakest link in stoppping power as per normal


Just an opinion....

[Jingers]

i understand all about tires make a big part of braking, and i appreciate that but im not discussing tires. and i know with such a discussion it can get alittle confusing as there really are a huge amount of differences ie pads/weight/allingment as stated eariler.

But if we were discussing outright stopping power, im not so sure if ap racing brakes would be similar to gsi? Is that possible?

[tinkerbell]

ap brakes would stop a car quicker from 300km/h than a GSi brakes would...

that is, they have better "stopping power"

[00dc2]

its a complicated issue.

larger brakes dont just give better heat dissipation but give higher stopping power.

multi-pot system generally spread the squeezing force more evenly on the pads/rotor which i imagine can make hard braking without locking easier.. also reducing unecessary wear.

probably getting some sort of good gps system to time your deceleration or a gtech then slow down from a high speed to low speed and see the steepness of the graph showing your speed.

[kavehman]

there are too many variables involved to be able to accurately measure anything.

I think any upgrade over stock as long as your using reliable parts will provide a better stopping effect, as long as it's engineered to be used with the stock ABS System.

With the ITR (DC2) It doen't really need any kind of upgrade, this should be one of the last mods to make in my opinion.

[Jingers]

ap brakes would stop a car quicker from 300km/h than a GSi brakes would...

that is, they have better "stopping power"

This is i guess what im trying to know out of all the varying factors.

What makes the ap brakes have more outright stopping power? Clamping force? Piston size?

[tinkerbell]

IMPORTANT NOTE: Not all calipers are created equal. The equation above assumes a perfect embodiment of the caliper clamping function. In actual fact, the more compliant (or less stiff) a caliper is, the less efficient or able it is to maintain a 1:1 ratio of system pressure increase to increase in force applied perpendicular to the pad face. Other caliper functions can also affect the torque realized through losses that are the result of vibration, caliper and caliper mounting flex, and offset loads. Pad friction coefficient and caliper material strength are affected by temperature.

http://www.stoptech.com/tech_info/fo...g_dynamics.pdf

more here:

http://www.stoptech.com/tech_info/wp...lections.shtml