what is soo good about 2 piece rotors?
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From: niagara falls, canada
what is soo good about 2 piece rotors?
i am buying a 11.75 kit from fastbrakes and there is the option of a 2 pieace rotor
it's 175$$ more so i would like to know how and why they would be a better selection
tia.
also i hope to road race and autoX next spring.
it's 175$$ more so i would like to know how and why they would be a better selection
tia.
also i hope to road race and autoX next spring.
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From: Yokohama, Japan
Re: what is soo good about 2 piece rotors? (2b_FaSt)
I intend this to be a helpful suggestion, so please take it as such:
Why don't you wait until you find fault with the stock brakes (on the track) before you change them?
Why don't you wait until you find fault with the stock brakes (on the track) before you change them?
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From: niagara falls, canada
Re: what is soo good about 2 piece rotors? (Reid)
I intend this to be a helpful suggestion, so please take it as such:
Why don't you wait until you find fault with the stock brakes (on the track) before you change them?
Why don't you wait until you find fault with the stock brakes (on the track) before you change them?
that's a good point and will consider i just came into some extra money and thought it would be nice to do
i have gsr's all around
i guess it will be fine w/gsr. i dont want to swap motors just yet i have some more to learn before i get into that , and i dont want to put too much into my dseries
i have good suspention so dont need that.
i guess i am just going to save it.......lol yeah right
thanks for your help guys
i
H-T 
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From: Kings Mt., NC
Re: what is soo good about 2 piece rotors? (2b_FaSt)
lighter weight.
light is good, but light = $$$$.
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From: OH
Re: what is soo good about 2 piece rotors? (2b_FaSt)
2-piece rotors rule. It is a substantial weight savings.
For a roadcourse though, may be kind of expensive if you munch rotors quite often. For autox they are perfect.
For a roadcourse though, may be kind of expensive if you munch rotors quite often. For autox they are perfect.
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From: Columbus, OH, USA
Re: what is soo good about 2 piece rotors? (Todd00)
2-piece rotors rule. It is a substantial weight savings.
For a roadcourse though, may be kind of expensive if you munch rotors quite often. For autox they are perfect.
For a roadcourse though, may be kind of expensive if you munch rotors quite often. For autox they are perfect.
But when you're comparing that to Brembo Blanks or Autozone rotors it's going to be hard to beat them dollar for dollar.
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From: formerly elgorey, VIRginia
Re: what is soo good about 2 piece rotors? (2b_FaSt)
actually the weight savings of a 2 peice rotor is just a nice side effect of the main purpose of the 2 peice design.
with a 1 peice rotor the hat and the disc will heat/cool and therefore expand/contract at different rates, causing cupping or coning of the rotor surface. this decreases the pad contact area causes uneven pad wear.
With a 2 peice design, the hat and disc are seperate so they can expand and contract independent of one another.
with a 1 peice rotor the hat and the disc will heat/cool and therefore expand/contract at different rates, causing cupping or coning of the rotor surface. this decreases the pad contact area causes uneven pad wear.
With a 2 peice design, the hat and disc are seperate so they can expand and contract independent of one another.
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From: Rochester, NY
Re: what is soo good about 2 piece rotors? (2b_FaSt)
I dont believe any 2 piece is effective unless you go with the floating rotor design to prevent warping.
I had 2 piece 1" thick 11" Fastbrakes rotors, they were WAY OVERKILL on my wallet for what I did... a few trackschools, lots of autocross and daily driving. So, yup, I sold them.
OEM rotors work well enough.. I would spend your money on Wilwood calipers over 11" OEM rotors then save your loot for TRACKTIME!!!!!
Also there is a great Brake Theory in the DFH forum...
[Modified by owen_the_soyboy, 12:47 PM 12/2/2002]
I had 2 piece 1" thick 11" Fastbrakes rotors, they were WAY OVERKILL on my wallet for what I did... a few trackschools, lots of autocross and daily driving. So, yup, I sold them.
OEM rotors work well enough.. I would spend your money on Wilwood calipers over 11" OEM rotors then save your loot for TRACKTIME!!!!!
Also there is a great Brake Theory in the DFH forum...
[Modified by owen_the_soyboy, 12:47 PM 12/2/2002]
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From: Surrey, BC, Canada
Re: what is soo good about 2 piece rotors? (Todd00)
The 2 piece FastBrakes 11.75" rotors are not really expensive to replace. I am running them with the Wilwood Superlite calipers, and the overall weight of the package was 1 pound per wheel more than my 9.4" stock brakes.
Brian (FastBrakes) quoted me right around $40-$50 each side to replace the rotor blanks, and they just need to be bolted to the rotor hats.
Brian (FastBrakes) quoted me right around $40-$50 each side to replace the rotor blanks, and they just need to be bolted to the rotor hats.
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From: Las Cruces, NM, USA
Re: what is soo good about 2 piece rotors? (Jaker)
OT on the rotors, but why not put the money towards tires. A set of Azenis (or if you have alot of money, R compounds) will increase your times considerably more than larger brakes. Buy a set of carbon metallic pads (many companies to choose from), new rotors, and possibly some SS lines.
Plus, you'll want to keep in mind what class you'll be in once you start racing. Don't modify your vehicle to the point where you're in a full Prepared/Modified class.
Plus, you'll want to keep in mind what class you'll be in once you start racing. Don't modify your vehicle to the point where you're in a full Prepared/Modified class.
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From: Rochester, NY
Re: what is soo good about 2 piece rotors? (Jaker)
Brian (FastBrakes) quoted me right around $40-$50 each side to replace the rotor blanks, and they just need to be bolted to the rotor hats.
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From: formerly elgorey, VIRginia
Re: what is soo good about 2 piece rotors? (owen_the_soyboy)
I had 2 piece 1" thick 11" Fastbrakes rotors, they were WAY OVERKILL
If the rotor refills are only $50 then by all means go for it.
Another advantage to keep in mind is that 2 peice are by definition a performance rotor, so should be made out of higher quality metals formulated for track use, will last longer and cool better. Whereas autozone and yes brembo blanks are made from junk metal for commuter cars and will groove and crack much quicker.
I wish I could get 2 peice rotors for that cheap....I would be all over them in a heartbeat.
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From: Rochester, NY
Re: what is soo good about 2 piece rotors? (elgorey)
Yes I hear ya, but their ONLY attribute worth the money is really the COOLING VANES of the 2 piece rotors. But heat issues are not a problem on my 2000 pound car. I mean if I was on track for hours it would be but I am not doing that much (sadly I am not).
Now if I was doing trackschools once a month, it would be worth it. In fact, that is why I bought the 2 piece rotors but I also bought other mods and then I had nothing leftover for the trackdays!
I am fine with ITR rotors and ITR calipers. no joke. that is by far enough... Wilwood calipers for better pedal feel would be nice though....
Now if I was doing trackschools once a month, it would be worth it. In fact, that is why I bought the 2 piece rotors but I also bought other mods and then I had nothing leftover for the trackdays!
I am fine with ITR rotors and ITR calipers. no joke. that is by far enough... Wilwood calipers for better pedal feel would be nice though....
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From: Southern, CA
Re: what is soo good about 2 piece rotors? (Aron Parsons)
OT on the rotors, but why not put the money towards tires. A set of Azenis (or if you have alot of money, R compounds) will increase your times considerably more than larger brakes.
.
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From: Columbus, OH, USA
Re: what is soo good about 2 piece rotors? (manveer)
Taken from http://members.bellatlantic.net/~vze...2-Piece_rotors:
You might also want to check out Stoptech's information about floating vs. fixed hat rotors:
http://www.stoptech.com/faq/data/faq18.html
I have seen a lot on 2-piece rotors. Some of the information contained in them is correct some is mythical.
Some definitions.
2-Piece rotor: A brake disc rotor that has a separate hat (cap) usually made from a lightweight metal. There are two types of common 2-piece street rotors. One uses a bolted hat and the other a pinned hat (also known as a "floating rotor" design).
The bolted type is just what it sounds like. Usually an aluminum hat bolted to a cast iron rotor. The only real benefit of this design is weight savings. However, weight savings tend to be only 10-20%, all else being equal, but with a 50-75% price increase.
The pinned type has usually stainless steel pins that attach the aluminum hat to the rotors. This allows the rotor to "float" on the pins. The great advantage of this design is that it allows the rotor to move freely. When the rotor expands and contracts there is much less chance of binding or distortion. As you can imagine this cuts down on warping and uneven wear (DTV). The disadvantage of this design is really high costs and increased NVH.
As far as better heat conduction, not really. It does help a bit, buts it's not enough to make it worth the extra cost. The nice think about the weight savings is you can get a larger rotor with out taking a weight penalty.
- It may help keep your wheel bearings cooler.
My opinion:
2 piece floating (pinned) rotor is worth every penny. This is good technology, yeah they cost a ton but they do the job. They keep the rotor even through out operating temperature range and they keep down DTV problems better than anything I've ever seen. Be sure they're the pinned hat type and not the bolted hat type.
Some definitions.
2-Piece rotor: A brake disc rotor that has a separate hat (cap) usually made from a lightweight metal. There are two types of common 2-piece street rotors. One uses a bolted hat and the other a pinned hat (also known as a "floating rotor" design).
The bolted type is just what it sounds like. Usually an aluminum hat bolted to a cast iron rotor. The only real benefit of this design is weight savings. However, weight savings tend to be only 10-20%, all else being equal, but with a 50-75% price increase.
The pinned type has usually stainless steel pins that attach the aluminum hat to the rotors. This allows the rotor to "float" on the pins. The great advantage of this design is that it allows the rotor to move freely. When the rotor expands and contracts there is much less chance of binding or distortion. As you can imagine this cuts down on warping and uneven wear (DTV). The disadvantage of this design is really high costs and increased NVH.
As far as better heat conduction, not really. It does help a bit, buts it's not enough to make it worth the extra cost. The nice think about the weight savings is you can get a larger rotor with out taking a weight penalty.
- It may help keep your wheel bearings cooler.
My opinion:
2 piece floating (pinned) rotor is worth every penny. This is good technology, yeah they cost a ton but they do the job. They keep the rotor even through out operating temperature range and they keep down DTV problems better than anything I've ever seen. Be sure they're the pinned hat type and not the bolted hat type.
http://www.stoptech.com/faq/data/faq18.html
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