Tech Question, What's wrong with Macri's brakes?
 

Watching this sport a long time and I've seen calipers lock up. Pads disintegrate and other things to cause the rear rotor to glow and from time to time spark, even seen rotors explode.

But every race I've seen Macri in this year that rear brake is sparking, glowing. looks like somethings off center.

Anyone know? Just carbon fiber disintegration? IDK.

Re: Tech Question, What's wrong with Macri's brakes?
 

Originally Posted by Charles Nungester:
Watching this sport a long time and I've seen calipers lock up. Pads disintegrate and other things to cause the rear rotor to glow and from time to time spark, even seen rotors explode.

But every race I've seen Macri in this year that rear brake is sparking, glowing. looks like somethings off center.

Anyone know? Just carbon fiber disintegration? IDK.

I thought it was a James Bond distraction technique :D

Happens frequently with the 39 car, I don’t know why
It doesn’t seem to slow him down or hurt him any

Re: Tech Question, What's wrong with Macri's brakes?
 

I have noticed it also, what used to be "that guys brakes are about fried" now goes on lap after lap.

My friend says it's the pads everyone is using? I have no idea. I know one rear brake unit did catch fire while I was watching the Larry Rice Classic a few weeks ago. Forget the driver but he pulled off and went back to his pit.

Pad and rotor combo mostly. Might also have a lot of rear bias as well

Looked like the hot set up to me!

Re: Tech Question, What's wrong with Macri's brakes?
 

Most likely he has a titanium rotor,the hotter they get the better they work.

Best guess would be titanium rotors. =$$$🤔

Re: Tech Question, What's wrong with Macri's brakes?
 

Diamond infused rotor w/Concrete (Macri) pads.

Re: Tech Question, What's wrong with Macri's brakes?
 

Think Macri is experimenting with carbon fiber rotors.

They are Wilwood Ti rotor and Ti pad compound not all drivers experience those scenarios he uses a lot of brake with zero problems!

Thank You for your reply!

Re: Tech Question, What's wrong with Macri's brakes?
 

Originally Posted by berks co:
happens frequently with the 39 car, i don’t know why
it doesn’t seem to slow him down or hurt him any

bingo! :22:

Re: Tech Question, What's wrong with Macri's brakes?
 

Originally Posted by DaveB@Wilwood:
They are Wilwood Ti rotor and Ti pad compound not all drivers experience those scenarios he uses a lot of brake with zero problems!

Thanks, some actual info!
So "Ti" stands for titanium?.... just like my knees, good stuff :)
I used to build horse carriages with a guy & we used your brakes too. I don't know jack about horses, just built the carriages.... but I guess they don't always listen?? Or you need the brakes for going downhill??? :24:

Re: Tech Question, What's wrong with Macri's brakes?
 

I've been seeing this more often with the guys using Titanium rotors. Not as much as Macri's car but more and more guys are using them because they are lighter in weight and the brakes seem to work better the hotter you get them. Yes they are much more expensive than a regular steel rotor combination.

Re: Tech Question, What's wrong with Macri's brakes?
 

Originally Posted by DaveB@Wilwood:
They are Wilwood Ti rotor and Ti pad compound not all drivers experience those scenarios he uses a lot of brake with zero problems!

Occasionally on this board you get the facts and I enjoy it, Even if it's correcting something I was wrong about. Oh and I've been chewed.

But you learn from it and if you don't learn something everyday, Is it really living?

Thanks Wilwood

I remember back in 88-89 at Florence LM's and Bloomquist just destroyed the field. Was driving in a hundred feet deeper than the rest. The guy I was pitting for said, Yeah, He's got these new carbon fiber brakes. Cost a fortune, But you see the results... Well they've come a long way and it's not uncommon for OEM on street cars now. in fact most have some form of carbon fiber pads. or ceramic. Soon, Titanium?