D2 Racing brakes

[Kimberley Scott]

repating what was mentioned above, sorry Zap.

Scotty

Edited 09/10/09 09:19 AM by Kimberley Scott

[ZAP]

Yeah I have had this argument many times and people forget that it is the little rubber tyre that does most of the work, but let people think they are right for a short time.

As for RAP1D's view on the Chinease stuff, he is very correct. As they tool up and steal designs and processes, they can make a very good or sometimes better knockoff. The to4z you mention are still substandard, you only need to ask APS and they massive list of annoyed Twin Turbo owners in the USA that have been stung by a bad batch of chinese to4z that APS tried to palm off as the real thing.

I am still however reluctant to put my faith in anything "cheap" that could take my life or the life of my family.

[RAP1D]

The fox body's, they were Mitsubishi TDOx rip-offs, but yeah, same deal... atleast they wern't gambling with poeples brakes.

[RSK]

I'm with zap on this one...

Big brake setup will NOT reduce your stopping distance from a one off stop as standard brakes have enough power to lock the wheel.

Not from 200kmh's + they don't.

[dule]

Well never tried but I would imagine they could struggle from 200+ to 0 but that comes back to heat dispersion, the reason they would struggle is because they would get too hot. Nothing to do with this fancy physics theory that bigger rotors stop you quicker.

[Jact]

I'm backing Sprjenkins here, the larger surface area of bigger brakes has everything to do with reduced braking distances, sure heat, pad friction, etc. affect this but what he said is without a doubt true and factual!

Go read the Vehicle Standards Bulletins, especially VSB 14 (NCOP5). Was told by the licencing center here in Perth that it contains everything you need to know about the legality of modifications done to your vehicle.

Vehicle Standards Bulletins

Also Winstor's post is quite good as the NCOP's state:

Fitting disk brakes that are not a manufacturer’s option - requires certification

Also interesting to note that it mentions International Standards & Association Standards for braking systems (ie. rotors, callipers) are recognised in Australia as compliant!

[Sprjenkins]

Sprjenkins, rubbish. Your theory forgets that the limiting factor is grip. This is not like braking a farking train or applying pressure on a belt sander .

We have seen stopping distance tests in magazines bear this out. The main advantage of large rotors is heat dissipation as well . You are correct with regards to more pots means more even application of pressure.

Stopping rotational motion is the same principle no matter what the function. Big brakes will reduce your stopping distance no matter what tyres you are running, its exactly like braking a train or a belt sander.

When you brake you are trying to convert kinetic energy into heat energy. If your maximum grip level is, lets say an arbitrary figure of 100, then if you can convert a greater amount of kinetic energy through greater friction without locking up the wheel or exceeding the maximum grip level then you will stop quicker.

As someone else said, braking is about energy conversion, energy is converted through the tyres friction on the road and the pads friction on the rotor. If you hold the former constant while increasing the later you wwill stop quicker.