EBR owners, way direction are your front rotor slots going?

[pur pony]

Just put my slotted EBR rotor on and wasnt sure what direction the slots were supposed to go (does it even matter?) so on hopped on google images and half the EBRs had them in one direction and the other half had them going the opposite direction, so I am guessing it really doesnt matter-

 

[303xb]

There is a correct way. The mounting instructions and EBR factory pictures should help.

Here's mine

 

[303xb]

 

[303xb]

 

[ReadyXB]

And then there's...

 

[303xb]

Hmmm. That's weird. Maybe it doesn't matter. I figured the gas/heat dissipated a certain way, maybe not.

 

[ReadyXB]

Any members with expertise in fluid dynamics that can give an answer? Going with the instructions as 303xb said should be a safe bet.

 

[pur pony]

Ya, i looked at a bunch of different pictures and they were not all the same. At this time i have it installed as 303xb does, My rotor didnt come with directions. I just went back and looked at pictures of the SX that i test rode at demo day and that rotor is installed as 303xb's is as well.

 

[oh9bolt]

They can be mounted either direction.

 

[mrlogix]

They can be mounted either direction

this is true. The slot performs two (2) functions. First is an gas expansion slot to allow gas by products of the pad material to escape when the pad is gassing out as it heats up. The second is to allow the dust particulate to escape the contact area of the pads. In this function the slot is angled radially with the trailing edge in rotation towards the outer diameter of the rotor, as demonstrated in the photos posted by 303xb.

 

[d_adams]

Just put on some fresh shoes. Rotor is directional per the instructions.

 

[oh9bolt]

 

[Mike VV]

Funny. The "gas" comment is from MANY...years back when the pads did outgas during heating.
Not so much with todays pads. The holes and slots are mostly for looks and a little weight reduction.

The car guys tried to delete the holes and slots when their pads got better and outgassing became a thing of the past, about 10 or 12 years ago. People complained and wanted slots and or holes. At first they were willing to pay extra for them, the manufacturers went back to holes and or slots..!

They may still help with water reduction at the surface.

Mike

 

[mrlogix]

The "gas" comment is from MANY...years back when the pads did outgas during heating.
Not so much with todays pads.

true, yes I am that old. Thanks for pointing that out.

People complained and wanted slots and or holes.

also true, ergo for proper aesthetics install as directed

 

[303xb]

http://auto.howstuffworks.com/auto-parts/brakes/brake-parts/brake-rotors2.htm

 

[d_adams]

true, yes I am that old. Thanks for pointing that out.

I've met him, he IS that old.

 

[Mike VV]

303xb -

OLD...information..! Modern pads have little IF ANY out gassing problems.
Though the "drilled / weakening" comment is true, with heavy applications and heavy use. Cracks form around the holes, especially if the holes aren't properly chamfered on both sides.

Mike

 

[heagachongoose]

A wise man once told me,

"You don't need brakes, they will only slow you down"

Such wise, very truth. Much amaze. All that stopping nonsense is overrated. Poppycock. I wan' go fast!