rithsleeper

I'm redoing the ducting according to the feedback I got from my "crude" designs before. The picture you see is what the rotor shield will look like. I have 3 markings where I'm thinking about making the cooling duct enter.

#1 is flush with the top and would blow straight on the rotor face (this is what I see most doing but don't understand why...
#2 is half over the rotor face and half inside the rotor
#3 seems to be my first inclination which is blowing as close to center as possible and would put a lot of air through the cooling passage ways inside the rotor. instead of just on the face. I think it would cause the least clearance problems with the 17" rim.

Is there one place that is better than another? These are the ONLY places that it will fit with my brake conversion and spindle.

Remember the side you are seeing would be looking from the back of the rotor, not the front.



The dark line between 2 and 3 is where the rotor face will start.

If anyone has any insight as to why one place would be better than the other I would appriciate it.

TJM

I would guess #3.

This is all "paper" engineering here, but I would think getting the air to the base of the rotor at the hub makes best application?

I wonder if the Rotor shield would be better left off???

Aardwolf

Search my threads for more. Here are few with spindle ducts:

http://forums.corvetteforum.com/c4-t...ion-parts.html

http://forums.corvetteforum.com/c4-t...ct-mounts.html

Recommend 3" tubing or more.

crease-guard

I'm no expert so take this for what it's worth, but if you asked those in the know, they would tell you position 3 is the best. The reason being (and it makes sense) is that you are blowing cool air to the center of the rotor and allowing the air to be vented through the veins and thus cooling both sides of the rotor. Whereas positions 1 and 2 are mainly blowing on the inner rotor face and cooling that side but not the other.

I have a set of quantums or LG's (not sure which as they came with the car but I think they are LGs) and they blow towards the middle. However, I still had more cracks on the inner rotor surface than the outer suggesting it was getting more cooling than the outer.

Jay

TJM

Great info, as usual, but does the Shield need to be there at all?

It is a good supporting mechanism, but does it serve any purpose but keep dust outboard?

Aardwolf

Mine didn't come with shields, if it had I would have tossed them.

TJM

So those are strictly for the duct mounting?

We took the shields off ours, just not going fast enough to warrant ducts [ yet .. I hope?].

What's you take on hub cooling? Any point in worrying about it?

TJM

Reason I ask as we are modeling after Jon's design. Thinking base and hub?

Aardwolf

It also acts as a heat shield for the ball joint. I have a set of pads that are chunking from heat fatigue so you may not need them but they will help parts last longer.

I don't think air could help the hub stay cool, maybe water cooling around the bearing?

I have been thinking about adding a second duct. Leave the one to the center of the rotor and add one blowing on the caliper perhaps. Maybe it would help reduce drag by reducing frontal area and help air exit the wheel. Need an aero expert on speed dial!

rithsleeper

#3 was my initial thought, I have been told before that the shield is a necessity to keep the cold air from simply disapating and holds it against the rotor.

TJM

Got one named Rudy in Fla. but his thoughts exceed my wallet.