Which way should rotor slots point?
Thread Starter
Race Director
Joined: Aug 2006
Posts: 13,542
Likes: 1
From: Are you fat because you're lazy or lazy because you're fat? San Jose, CA
Cruise-In X Veteran
St. Jude Donor '09
Which way should rotor slots point?
I've seen lots of cars with them in both directions. Which way should they "point"?
Like this: http://forums.corvetteforum.com/show...ght=rotor+pics
Or the other way, which is how I see a lot of the sportbrakes installed.
Is the function of the slots to draw cool air in, or push hot air out?
Like this: http://forums.corvetteforum.com/show...ght=rotor+pics
Or the other way, which is how I see a lot of the sportbrakes installed.
Is the function of the slots to draw cool air in, or push hot air out?
Le Mans Master
Joined: Sep 2003
Posts: 8,812
Likes: 2,029
From: eastern NC
The rotor should be positioned based upon the vanes in the rotor and not the slots on the face of the rotor. Most vanes will have some curvature or slant to them and should be positioned so that in spinning the rotor in the direction the wheel will turn (when moving forward), they sling the air away from the center of the rotor to the outside. In other words, the air enters the center of the rotor and is spun to the outside.
In some rotors however, the vanes are straight from the hub to the outer perimeter of the rotor (like spokes on a bicycle wheel). In that case the rotor could be positioned on either side of the car and will perform as designed. In this is the case, and you have slots on the face of the rotor, you can position the rotor to suit your own taste.
Good luck... GUSTO
(Thanks Mike, and great pictures.
)
In some rotors however, the vanes are straight from the hub to the outer perimeter of the rotor (like spokes on a bicycle wheel). In that case the rotor could be positioned on either side of the car and will perform as designed. In this is the case, and you have slots on the face of the rotor, you can position the rotor to suit your own taste.
Good luck... GUSTO
(Thanks Mike, and great pictures.
)
Le Mans Master
Joined: Feb 2006
Posts: 5,488
Likes: 4
From: USA
The rotor should be positioned based upon the vanes in the rotor and not the slots on the face of the rotor. Most vanes will have some curvature or slant to them and should be positioned so that in spinning the rotor in the direction the wheel will turn (when moving forward), they sling the air away from the center of the rotor to the outside. In other words, the air enters the center of the rotor and is spun to the outside.
In some rotors however, the vanes are straight from the hub to the outer perimeter of the rotor (like spokes on a bicycle wheel). In that case the rotor could be positioned on either side of the car and will perform as designed. In this is the case, and you have slots on the face of the rotor, you can position the rotor to suit your own taste.
In some rotors however, the vanes are straight from the hub to the outer perimeter of the rotor (like spokes on a bicycle wheel). In that case the rotor could be positioned on either side of the car and will perform as designed. In this is the case, and you have slots on the face of the rotor, you can position the rotor to suit your own taste.
Le Mans Master
Joined: Aug 2003
Posts: 9,298
Likes: 4
From: American Canyon Lethal Injection
The rotor should be positioned based upon the vanes in the rotor and not the slots on the face of the rotor. Most vanes will have some curvature or slant to them and should be positioned so that in spinning the rotor in the direction the wheel will turn (when moving forward), they sling the air away from the center of the rotor to the outside. In other words, the air enters the center of the rotor and is spun to the outside.
In some rotors however, the vanes are straight from the hub to the outer perimeter of the rotor (like spokes on a bicycle wheel). In that case the rotor could be positioned on either side of the car and will perform as designed. In this is the case, and you have slots on the face of the rotor, you can position the rotor to suit your own taste.
Good luck... GUSTO
(Thanks Mike, and great pictures. )
In some rotors however, the vanes are straight from the hub to the outer perimeter of the rotor (like spokes on a bicycle wheel). In that case the rotor could be positioned on either side of the car and will perform as designed. In this is the case, and you have slots on the face of the rotor, you can position the rotor to suit your own taste.
Good luck... GUSTO
(Thanks Mike, and great pictures.
)
When looking down on the vanes from the top of the rotor the slanted vanes should be pointed to the rear of the car.My $.02
Sleeper
Melting Slicks
Joined: Jun 2002
Posts: 2,246
Likes: 66
From: Middletown CT
I agree with Mike's post regarding the direction of the vents. Air is drawn from the center and vented at the outer edge. Shouldn't the slotted rotors be machined so the brake dust and gases are thrown to the outer edge of the rotor? The drilled holes wouldn't matter, as the dust and gases would be drawn into the vents. At least that's how I see it, based on no scientific data. 
Last edited by Greg_E; Jun 17, 2007 at 08:20 PM.
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Racer
Joined: Mar 2007
Posts: 361
Likes: 0
From: Landisville PA
Mike,
Do you remember what page on StopTech's website you got those picts from? I'm trying to pass along this info - but its more believable if there's a link of info to go along with it.
Thanks!!
(I know this is an old thread, but I remembered seeing these picts and I went back and searched for them again)
Do you remember what page on StopTech's website you got those picts from? I'm trying to pass along this info - but its more believable if there's a link of info to go along with it.
Thanks!!
(I know this is an old thread, but I remembered seeing these picts and I went back and searched for them again)
