Front rotor cooling shields

[Mark H.]

Fabricated some rotor cooling shields. As can be seen in the picture cooling air will hit the inside friction area along with being ducted to the center of the rotor. Should I block the air stream to the friction surface or does it really matter?

 

[Randy V]

Any air you get to the friction surface is a good thing in my opinion.
I’ve heard only 1 person say that the ducting should be strictly to the center of the rotor at the hub, in order to force all the air between the braking surfaces of a ventilated rotor. However, he couldn’t positively state that there would be troubles if cooling the inside surface of the rotor would lead to any troubles.
I think you’ve done a good job there..

 

[Rob Klein]

Any air you get to the friction surface is a good thing in my opinion.
I’ve heard only 1 person say that the ducting should be strictly to the center of the rotor at the hub, in order to force all the air between the braking surfaces of a ventilated rotor. However, he couldn’t positively state that there would be troubles if cooling the inside surface of the rotor would lead to any troubles.
I think you’ve done a good job there..

I think on a vented rotor they say to the center is better so the vents take over, also if any debris is pulled in most likely it will be sent out the vent and not on the surface