Stupid question but, what is two pieces brake rotors?

SFYellow

Suspended
Joined
Aug 10, 2006
Posts
120
Reaction score
0
Hey guys, sorry for being challenged, but I was wondering what does it mean that brake rotors are two pieces or one? What do we have stock - two pieces or one? Also, why don't we see rotors drilled and slotted? I think I only saw slotted rotors for SRT.
 

rocman

Viper Owner
Joined
Jan 4, 2008
Posts
153
Reaction score
0
Location
SoCal
One piece....

You must be registered for see images


You will notice the whole thing is one piece.

2 piece.....

You must be registered for see images attach

Here you see that the center hat (black center part) is a seperate piece bolted to the braking surface.
 

Mopar426

Enthusiast
Joined
May 3, 2004
Posts
840
Reaction score
0
Location
Dallas, Tx
Hey guys, sorry for being challenged, but I was wondering what does it mean that brake rotors are two pieces or one? What do we have stock - two pieces or one? Also, why don't we see rotors drilled and slotted? I think I only saw slotted rotors for SRT.


Drilled or slotted rotors decrease the surface area so by having both on the same rotr manufacturers believe it will decrease the surface area too much (less contact patch) and actually increase stopping distance. That said I have seen people drill their slotted rotors.
 
OP
OP
S

SFYellow

Suspended
Joined
Aug 10, 2006
Posts
120
Reaction score
0
Oh I see now. Thank you.
In regards of the decrease of the slotted area. I've seen back in Corvette years many manufacturers offering drilled and slotted rotors. Is this the new research showing that it is bad to have both or is it only Viper specific?
 

JonB

Legacy\Supporting Vendor
Supporting Vendor
Joined
Dec 8, 1997
Posts
10,325
Reaction score
45
Location
Columbia River Gorge
Oh I see now. Thank you.
In regards of the decrease of the slotted area. I've seen back in Corvette years many manufacturers offering drilled and slotted rotors. Is this the new research showing that it is bad to have both or is it only Viper specific?


Its not 'good or bad' black and white. The lightweight center hats are GOOD. Less rotating, unsprung weight is VERY GOOD. Slots are GOOD. Holes can diminsh endurance and track performance (only)

We have several "GOOD" slotted-drilled lightweigt 2pc rotor options, but the ENDURANCE on a drilled rotors is less, especially if tracked heavily.

Drilled rotors are often called 'poser' rotors in the Viper World, because they dont perform as well or last as long in track or competitive use. THEY ARE GREAT FOR STREET-STRIP-AUTOCROSS! If you like the ****-racer look, but DONT track your car but rarely, you can confidently add 2pc slotted and drilled black-hat rotors from $1195/set of four !
 
Last edited:
OP
OP
S

SFYellow

Suspended
Joined
Aug 10, 2006
Posts
120
Reaction score
0
Its not 'good or bad' black and white. The lightweight center hats are GOOD. Less rotating, unsprung weight is VERY GOOD. Slots are GOOD. Holes can diminsh endurance and track performance (only)

We have several "GOOD" slotted-drilled lightweigt 2pc rotor options, but the ENDURANCE on a drilled rotors is less, especially if tracked heavily.

Drilled rotors are often called 'poser' rotors in the Viper World, because they dont perform as well or last as long in track or competitive use. THEY ARE GREAT FOR STREET-STRIP-AUTOCROSS! If you like the ****-racer look, but DONT track your car but rarely, you can confidently add 2pc slotted and drilled black-hat rotors from $1195/set of four !

Thank you John. I plan to race it but maybe few weekends in a year, whenever Viper Days are in the Nor Cal area. But I do want to be able to withstand couple of sessions a day by 20 to 30 min sessions. Would these drilled and slotted rotors withstand it?
Do you have a link to those rotors?
 
Joined
Jun 8, 2005
Posts
4,969
Reaction score
0
Location
Omaha NE.
Slotted and or drilled rotors will also have the affect increased pad wear because the slots or holes are constantly shaving "clearing" the pads surfaces. This helps stopping power but increases wear and dust. The slotted rotors are the best compromise when it comes to looks and performance. The drilled will crack at the track it is not a mater of if. The less "mass" of the rotor itself reduces the amount of energy "heat" the rotor can dissipate causing increased temps and stopping distances. The rapid uneven cooling the holes create then cause the holes to be the focal points for stress cracking making them dangerous for the track. I have even used the drilled for my auto cross car and had them crack because of this so be aware of the differences.

The aluminum hat along with decreasing weight also helps isolate the hub and bearings from excess heat from the rotor surface increasing the life of these parts.
 

fireball

Enthusiast
Joined
Jul 5, 2007
Posts
876
Reaction score
0
The 2 piece rotor also lets the rotor surface expand and contract more independantly of the hat. This means the rotor is less likely to be warped or in some way damaged by heat stress across the part.
 

JonB

Legacy\Supporting Vendor
Supporting Vendor
Joined
Dec 8, 1997
Posts
10,325
Reaction score
45
Location
Columbia River Gorge
Thank you John. I plan to race it but maybe few weekends in a year, whenever Viper Days are in the Nor Cal area. But I do want to be able to withstand couple of sessions a day by 20 to 30 min sessions. Would these drilled and slotted rotors withstand it? Do you have a link to those rotors?

Online Shopping - Home keyword ROTORS when you get there. THANKS.


Drilled and slotted can STAND IT but they wont LAST as long as slots alone! The drilled-thru rotor does not allow for as much 'spiderwebbing' and heat expansion and endurance / life suffers. As I said, they look **** (poser), and they cost $400 less per set, but they dont LAST as long in HEAVY TRACK USE.

Viper Days comes to NorCal 1 x year (Thunderhill) but you may graduate to open days at Laguna, as with NEXT WEEK! Who knows next year, now the the series has sold...

I would go with the slotted STOP TECH 2pc slotted rotor system, as on the 08 ACR............. under $1600 for ALL FOUR. In Stock, no waiting. Add SS lines for under $200; need fluid and GO PLAY ! Thank You........
 

ILLSMOQ

Enthusiast
Joined
Nov 27, 2005
Posts
1,885
Reaction score
0
Location
SAN JOSE, CA
I know of a couple guys that have cracked rotors autocrossing....these were not even drilled. If you're going to track the car get just slotted or even solid rotors.

I really like how the drilled rotors look...that's why I got em. I may do one track event a year.....but I do drive the car aggressively and the drilled rotors have been fine so far.
You must be registered for see images attach

You must be registered for see images attach
 

Viper Specialty

Legacy/Supporting Vendor
Supporting Vendor
Joined
Feb 14, 2002
Posts
5,761
Reaction score
78
Location
Cape Coral, FL
FYI, I have (2) complete used sets of SRT-10 2-Peice StopTech Rotors for sale, half price. Looking for 999.00 per set, they come WITH the EBC Red pads they were mated with. They are both <3K miles, ZERO track miles, ZERO aggressive pad miles.
 

VicTxV10

Enthusiast
Joined
Oct 13, 2008
Posts
1,559
Reaction score
0
Location
Victoria, TX
FYI, I have (2) complete used sets of SRT-10 2-Peice StopTech Rotors for sale, half price. Looking for 999.00 per set, they come WITH the EBC Red pads they were mated with. They are both <3K miles, ZERO track miles, ZERO aggressive pad miles.

Dan, PM sent.
 

09 Venom

Enthusiast
Joined
Feb 14, 2005
Posts
884
Reaction score
0
Location
New York
I agree and understand the reasoning for purchasing just the slotted rotors but the cross drilled rotors do look purdy!!:D
 

Latest posts

Members online

Forum statistics

Threads
153,644
Posts
1,685,209
Members
18,220
Latest member
ROIII
Top