>I question whether this is true over a race distance. Brakes are
>affected by temperature, and the characteristics of carbon fiber vs.
>steel are different, maybe not over a few hotlaps, but I wonder how
>each would be after running *** a course with heavy braking zones
>over race distances.
It depends I suppose on what is steel and what is carbon - you can use
brakes with some parts steel and some carbon or even steel covered
over with carbon. Ultimate stopping power of each (short term) differs
little, the problems come in the wear - with carbon brakes and pads
both wear away, but with one or other made of steel the wear of the
carbon will be greater. Quite difficult to make it last. Also there is
a huge weight difference, particularly bad in the rotational and
unsprung sense. The upside is that steel purportedly has more feel,
although never having had experience of carbon I personally have no
idea if this is the case.
I don't really think though that lengthening the braking distance is
the best way to increase passing, since in almost any factor you can
think of F1 has gone the wrong way. Smaller tires increaes aero
reliance, so when aero is lost through turbulence it's impossible to
follow another car closely enough. Smaller front-on profile with
tightly tucked in wheels means less slipstream for the following car
to grab, no turbos, no undercar downforce to offset aero loss, grooved
tyres to further limit grip - it goes on and on. Passing is certainly
possible as we can see when Schumi, Coulthard, Hakkinen etc get dumped
at the back of the grid, but with cars more closely matched on
performance overaking becomes just way too risky. Look at DC and EI
today and in Austria - despite a massive performance advantage
Coulthard couldn't pass - same too against Salo at Hockenheim. With
small wings and heavy reliance on front-end downforce there's no way
you can a) follow closely enough through the preceding corner, nor b)
catch a good tow down the long straights.
In a way I'm almost sorry that the races since Spain have been
exciting, because a few more boring races may have forced a longer,
harder study of the rules. As it is things may not change, although a
return to slicks would be a step in the right direction.
Cheers!
John