Making my own slotted rotors?
Jun 11, 2007, 02:29 PM
#31
ok you are right i did stop after the first post...after reading it i see where your coming from...
but the thing is...your pulling from peoples opinions and i can go to a bunch of other forums and paste what they said too...
i kept my OEM rotors because i like them... as for crossdrilled i obviously cant change your mind...but there is a reason all the high performance exotics have them...and it isnt just for looks
but the thing is...your pulling from peoples opinions and i can go to a bunch of other forums and paste what they said too...
i kept my OEM rotors because i like them... as for crossdrilled i obviously cant change your mind...but there is a reason all the high performance exotics have them...and it isnt just for looks
Jun 11, 2007, 02:32 PM
#32
If you can find anyone seriously involved in motorsports who thinks that drilled rotors are good for dissipating heat I would reconsider, but I do not think that such a person exists.
john
Jun 11, 2007, 02:35 PM
#34
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honestly i dont even care anymore...i have posted enough on this thread...
the question was should he do it himself... he isnt going to...great, i agree with his choice
as for why they dont use them in racing...its because they dont dissipate heat "dramatically" faster... and you lose contact surface... which equals less friction
the question was should he do it himself... he isnt going to...great, i agree with his choice
as for why they dont use them in racing...its because they dont dissipate heat "dramatically" faster... and you lose contact surface... which equals less friction
Jun 11, 2007, 02:46 PM
#35
honestly i dont even care anymore...i have posted enough on this thread...
the question was should he do it himself... he isnt going to...great, i agree with his choice
as for why they dont use them in racing...its because they dont dissipate heat "dramatically" faster... and you lose contact surface... which equals less friction
the question was should he do it himself... he isnt going to...great, i agree with his choice
as for why they dont use them in racing...its because they dont dissipate heat "dramatically" faster... and you lose contact surface... which equals less friction
Besides the real guys get to use the brake cooling fans (wouldn't that be nice.)
Jun 11, 2007, 02:48 PM
#36
honestly i dont even care anymore...i have posted enough on this thread...
the question was should he do it himself... he isnt going to...great, i agree with his choice
as for why they dont use them in racing...its because they dont dissipate heat "dramatically" faster... and you lose contact surface... which equals less friction
the question was should he do it himself... he isnt going to...great, i agree with his choice
as for why they dont use them in racing...its because they dont dissipate heat "dramatically" faster... and you lose contact surface... which equals less friction
If they're not racing, where's the heat?I just want this myth to die
It also reminds me of an old thread on Rennlist when someone took their fancy $10000+ Porsche ceramic brakes to the track, fried them and then the dealership wouldn't warranty them because they were racing. Most of them went to solid 996 Turbo rotors, IIRC.
john
Jun 11, 2007, 02:51 PM
#37
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anyway...whatever the truth may be...i myself will never buy crossdrilled nor did i or would i recomend them...
Jun 11, 2007, 03:19 PM
#38
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Cobra knows what he is talking about. He even broke down the braking process into chemistry (covalent bonds) he proves beyond a reasonable doubt that solid rotors are safer and provide a more braking power than do x-drilled and/or slotted rotors.
Jun 11, 2007, 09:03 PM
#40
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we can go back and forth all day... you are missing my point...i never said that they arent more prone to failure....i just said
take one rotor...have that same rotor crossdrill (by an expert company) and it will dissipate heat better...
BTW i wont ever run crossdrilled on my car...
take one rotor...have that same rotor crossdrill (by an expert company) and it will dissipate heat better...
BTW i wont ever run crossdrilled on my car...
The drilled ones got the hottest.
For one of 2 reasons
The drill holes interrupt the pressure differntial from the ID to the OD of the cooling vanes thus reducing centrifugal airflow
or
The reduced mass means less heat sink - i.e hotter temps
These particular rotors weren't parcheesied so I think reason 1 is most likely.
Jun 11, 2007, 09:06 PM
#42
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We did some dyno testing - drilled - slotted - and plain
The drilled ones got the hottest.
For one of 2 reasons
The drill holes interrupt the pressure differntial from the ID to the OD of the cooling vanes thus reducing centrifugal airflow
or
The reduced mass means less heat sink - i.e hotter temps
These particular rotors weren't parcheesied so I think reason 1 is most likely.
The drilled ones got the hottest.
For one of 2 reasons
The drill holes interrupt the pressure differntial from the ID to the OD of the cooling vanes thus reducing centrifugal airflow
or
The reduced mass means less heat sink - i.e hotter temps
These particular rotors weren't parcheesied so I think reason 1 is most likely.
sport compact car did a test on them too..they said that the drilled got hotter faster...but they said it cooled quicker... i figured they were right since they had a temp gauge measuring temps at different times... maybe they were wrong
Last edited by Evo8yurAMG; Jun 11, 2007 at 09:08 PM.
Jun 11, 2007, 09:10 PM
#44
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maybe i was wrong because i listened to them...at this point...i just dont care anymore since i am not in the market for nor ever would purchase crossdrilled rotors
Jun 11, 2007, 09:24 PM
#45
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wOOt?
And to the OP
We are lucky to have forums to ask questions and get real answers - how else would we get through all the marketing crap that manufacturers throw at us. I consider myself to be knowledgerable in brakes - but I still get owned all the time.
This is
- but the hard part is keepng the thread civil. Look below - for every member online there are usually 2 'guests' who read. Help them because they may very well have the exact same question or assertion as you.