Re: Drilled and slotted disk Q

[Mark Madison <mmadison@aracnet.com>]

well.. its also the ability of the material to transfer that heat to the
surrounding air instead of keeping it between the pad and rotor that
allows it to cool.  Depending on your setup with types of materials and
what-not you are able to keep your brakes cooler to work better.  With the
heat generated by the braking forces you will get "fade" from being too
hot.  the greater the surface area the better the cooling.  If you have
slotted rotors you get cool air between the actual plates that get clamped
if you have drilled rotors you still increase the amount of material
exposed to the surrounding air.  I personally don't know of any
substantial gaing from drilled rotors .. but they sure look neat. The
ideal setup in my honest opinion would be a vented rotor with a good pad
with some nice air - remember the larger the rotor the more surface area
to cool.  with more surface area to clamp.  


----------------------------
Mark Madison
mmadison@aracnet.com

On Fri, 6 Aug 1999 Captnbr@aol.com wrote:

> I have learned in aircraft performance classes that brakes stop aircraft (and 
> cars for that matter)  by changing the forward momentum energy into heat 
> energy with disks and pads.  The greater the surface area of the disks and 
> pads, and the greater the friction, the greater the heat energy created which 
> equals greater stopping capacity.  So why would drilling and slotting rotors 
> and disks aid in braking.  Aren't you decreasing the surface area causing 
> less friction to be created.  Why are slotted and drilled rotors better?  
> Inquiring mind wants to know
> 
> Brian 86 16v
> 
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