On Tue, 19 Oct 2010 12:06:49 -0700 (PDT), Robatoy
wrote:

On Oct 19, 1:02Â*pm, wrote:



So for the same pedal effort (or boosted pressure with power brakes)
the drum brake WILL provide more stopping power. That cannot be
argued.
Period.

I love the way you keep narrowing down the parameters of your
argument.
Now we have to apply the same foot-pressure!

But you failed to address the opening act of my position, and that is
that either system can lock up a wheel completely and do so quite
easily.
Except I have owned several vehicles that could NOT lock the front
brakes with disc brakes and factory pads. The rear drum brakes WOULD
lock - so they had rear only anti-lock brakes, which flies straight in
the face of your arguement.

The vehicles in question were 1989 and 1990 long body Ford Aerostars
with 3 liter engines and automatic transmission.
When the brake pads were replaced with carbon metallic high
performance pads I could FINALLY lock the front brakes on dry
pavement.



After that zero rotation has been reached, it doesn't matter
one bit what is holding that wheel stationary, the tire/road is now
the friction contact patch.... unless we want to modulate the braking
action rapidly and accurately via an ABS

Locking the brakes and sliding the wheel is the easy part.(and where
drum brakes excell) But real world braking generally consists of
slowing the vehicle down to a gentle stop without sliding the wheels
and flat-siding the tires. THIS is what builds up heat in the brakes -
which causes drum brakes to loose their effectiveness, and is where
disc brakes have the overwhelming advantage.

(which was developed by
Dunlop for aircraft applications) system and good luck doing that with
drum brakes. (I am not saying that has never been done, cheapos do
drums on the back-wheels), but it isn't the norm on anything with some
level of performance, and for very good reasons.)
But you go ahead and promote your one-stop drum philosophy, I'll stick
to stuff that works.
All YOU have to do is remember that every time you use your brakes,
your life is your foot's hands.

Oh.. and I'm done with this discussion.

Good

And you don't listen well - you just like to argue. Like I said - I
NEVER stated drum brakes were BETTER than discs for automotive use. I
just refuted your statement that disc brakes were more effective for
the application being originally discussed - which was a convenience
brake for a table saw............ and lighter etc.


And except for some of the more esoteric high priced (automotive)
brakes like (possibly) the Brembo, the combination of caliper, rotor,
and frame weights of a disc brake will outweigh all but the beafiest
drum brake implementation of the same diameter (by a significant
amount).

.......and what the hell does that have anything to do with the price
of fish?