AP Racing brakes!
Discussion
Have decided to have the upgrade done in May 07. I have a couple of questions - what is the material used in a) disc's & b) the pads c) Has anyone noticed a difference in braking in cold weather ie VERY cold weather? How does the ABS know the difference between std & uprated brakes in really cold temps?
Thanks.
Thanks.
Paul.H. said:
Have decided to have the upgrade done in May 07. I have a couple of questions - what is the material used in a) disc's & b) the pads c) Has anyone noticed a difference in braking in cold weather ie VERY cold weather? How does the ABS know the difference between std & uprated brakes in really cold temps?
Thanks.
Thanks.
a) metal
b) DS2500...but no doubt you could specify other.
c) ??
d) why would it need to know ???
It has sensors to detect wheel lock, and if it does it will release/control that wheel. It shouldnt matter what type or size the discs are.
Paul.H. said:
Have decided to have the upgrade done in May 07. I have a couple of questions - what is the material used in a) disc's & b) the pads c) Has anyone noticed a difference in braking in cold weather ie VERY cold weather? How does the ABS know the difference between std & uprated brakes in really cold temps?
Thanks.
Thanks.
When we do an install, we tell the PCM that the vehicle has 'premium brakes' as per the factory install, i imagine it alters the pump rate on the ABS or something. As far as I know, only Tech2 can do this.
[/quote]
d) why would it need to know ???[/quote]
I would think that, because the uprated brakes work at their best when warmed up, the really cold mornings we can experience in UK could affect the 'working temp' initially...although I suppose that could be said of ANY braking system really!
Thanks for the info anyway.
d) why would it need to know ???[/quote]
I would think that, because the uprated brakes work at their best when warmed up, the really cold mornings we can experience in UK could affect the 'working temp' initially...although I suppose that could be said of ANY braking system really!
Thanks for the info anyway.
I have the AP 6 pot setup, with Ferodo DS2500 compound pads. They are very good hot or cold, dont seem to need much warming up at all. I have Hawk HPS pads on my vette, and they are quite the opposite. I now have a set of DS2500 pads for the Corvette, will advise when I have fitted them and run em in. They are the same pad that fits the vxr monaro. ABS senses the angular velocity of all the wheels, and senses if one or more has slowed more than the others. It then intervenes to correct it by backing off the brakes on the affected wheel until its the same as the others. Been doing some work on Wabco abs systems recently, and they are very clever these days compared to the earlier systems.
Like Caspy said, the rate of intervention, and the threshold where intervention occurs are adjustable, but normally only by the mfg company. I wonder if Picador changed my settings when they fitted the system? Will have to ask.
Like Caspy said, the rate of intervention, and the threshold where intervention occurs are adjustable, but normally only by the mfg company. I wonder if Picador changed my settings when they fitted the system? Will have to ask.
v8d said:
I have the AP 6 pot setup, with Ferodo DS2500 compound pads. They are very good hot or cold, dont seem to need much warming up at all. I have Hawk HPS pads on my vette, and they are quite the opposite. I now have a set of DS2500 pads for the Corvette, will advise when I have fitted them and run em in. They are the same pad that fits the vxr monaro. ABS senses the angular velocity of all the wheels, and senses if one or more has slowed more than the others. It then intervenes to correct it by backing off the brakes on the affected wheel until its the same as the others. Been doing some work on Wabco abs systems recently, and they are very clever these days compared to the earlier systems.
Like Caspy said, the rate of intervention, and the threshold where intervention occurs are adjustable, but normally only by the mfg company. I wonder if Picador changed my settings when they fitted the system? Will have to ask.
Like Caspy said, the rate of intervention, and the threshold where intervention occurs are adjustable, but normally only by the mfg company. I wonder if Picador changed my settings when they fitted the system? Will have to ask.
Many thanks for that v8d - Can't remeber what I used to have in my '82 'vette...the garage changed them for me anyway!! I'm more used to the unidirectioal workings of aircraft anti-skid braking where I'm only dealing with a min of 2 wheels (& NO cornering!!!) using wheel speed transducers in the axles to apply the brakes evenly & equally to ALL wheels.
Thanks again for all the info - much appreciated.
Paul.H. said:
v8d said:
I have the AP 6 pot setup, with Ferodo DS2500 compound pads. They are very good hot or cold, dont seem to need much warming up at all. I have Hawk HPS pads on my vette, and they are quite the opposite. I now have a set of DS2500 pads for the Corvette, will advise when I have fitted them and run em in. They are the same pad that fits the vxr monaro. ABS senses the angular velocity of all the wheels, and senses if one or more has slowed more than the others. It then intervenes to correct it by backing off the brakes on the affected wheel until its the same as the others. Been doing some work on Wabco abs systems recently, and they are very clever these days compared to the earlier systems.
Like Caspy said, the rate of intervention, and the threshold where intervention occurs are adjustable, but normally only by the mfg company. I wonder if Picador changed my settings when they fitted the system? Will have to ask.
Like Caspy said, the rate of intervention, and the threshold where intervention occurs are adjustable, but normally only by the mfg company. I wonder if Picador changed my settings when they fitted the system? Will have to ask.
Many thanks for that v8d - Can't remeber what I used to have in my '82 'vette...the garage changed them for me anyway!! I'm more used to the unidirectioal workings of aircraft anti-skid braking where I'm only dealing with a min of 2 wheels (& NO cornering!!!) using wheel speed transducers in the axles to apply the brakes evenly & equally to ALL wheels.
Thanks again for all the info - much appreciated.
Aha, another closet Vette owner! 82s are nice, last of the best shape. I also have a 78 and a 2000 C5. Aircraft brakes - sounds interesting - aren't they made up in packs, with alternate friction stuff and rotors? My recent involvement has been on Iveco Stralis trucks - like car brakes really, but on a grand scale! And with some very clever electronics.
Yeah, v8d, the aircraft I'm on at the moment have 3 discs with sets of double sided pads in between - as you said, stators & rotors! However I've worked on some that require fitting with a fork-lift they're so heavy.
My 82 Vette had the last (I think) of the Crossfire injection...after that model they went to Tuned Port Injection. I loved it...spares were a little costly 'cos at the time (without going Stateside) it was cheaper to get them from Bauer Millet in Manchester & bring them back here with me - not the case now thankfully...you can pick most things on the 'net. I remember it cost me £1000 for a set of door & glass roof weather seals in '93 - ouch!
My 82 Vette had the last (I think) of the Crossfire injection...after that model they went to Tuned Port Injection. I loved it...spares were a little costly 'cos at the time (without going Stateside) it was cheaper to get them from Bauer Millet in Manchester & bring them back here with me - not the case now thankfully...you can pick most things on the 'net. I remember it cost me £1000 for a set of door & glass roof weather seals in '93 - ouch!
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