Crossdrilled rotors part 3!!!

[yody]

Well after attending the Sema show I have some new info(at least to me it was new) This is not for debate and i am sure people can prove some of these points wrong, and i don't intend to make this a 3 page post, just wanted to share what the vendors told me;
I talked to Baer brakes, Brembo Brakes, and 2 other small companies.
I would have to say speaking with 2 reps at Baer was a complete waste of time, they could only repeat the same useless info over and over, and obviously didn't know what they were talking about, and it was real easy to catch them in their ignorance. They proved the only thing they are good for is putting "kits" together(which they ARE good at) Basically what i came away with from the other companies was similar which was this;
A long time ago hot rodders on the salt flats drilled there rotors for a weight reduction. Then, they also helped vent the gases from the rotors/pads. Now degassing still takes place but not nearly as bad with the metallic pads. Where the holes/slots help is
1. the holes/slots gives the pad something to "bite" in to (questionable theory)
2. less mass equals faster cooling, so your rotors will last a little bit longer on the street if they can cool down faster between braking cycles. and perform better repeatedly
3. the holes will help get rid of the gases if there are any at all
4. the slots help sling out any built up brake dust/material(also questionable)
5. weight reduction
NOW for the bad part!
1. holes can crack at extreme temps and most likely will (but so do regular rotors)
2. You reduce the mass/area when drilling the rotor, so you lose braking pad area which isn't ideal. this is probably the biggest problem, if you are road racing you want all the braking surface possible.
so for the street they work good, but if you are going to be putting them to extremes, they might not be the best choice.
Now obviously some people knew these things and so forth. I am not putting this out their to be debated but feel free. This is just what I was told by the reps at the show. But in the long run, I don't think many of us here will see the difference between the 2. If you are building an extreme car that will be mostly track, holes/slots probably aren't for you, but if you are street, and occasional race maybe a few times a year, and you like the look of the holes/slots, go for it!
Now if I can remember/figuer out why race cars use slots? The brembo guy said it was for weight reduction, but i don't think they are losing much weight. I guess it will just be a black art for some of us. I am pretty happy with the info i came away with, even it isn't totally right, its good enough for me.