when i brake from 120 to 0 its fine no trouble at all but trying to stop at 200 to 100 i get a lot of shaking of the car is that because of a fault in the braking system or i just need a big brake upgrade?

um sorry to sound naive but where do you generally drive at 220 kmph

it could be becuase you're not really meant to drive a family sedan to 220kmp/h

maybe cos yor brakes arent ment to handle those speeds...

It's the heat build up. The hotter the rotor get the greater the chance of " flex " or mis-shaping. Generally it's not a huge problem but continue to do so and warped rotors here we come. My first suggestion is not to do those speeds, otherwise a brake upgrade ( slotted/cross drilled/bigger rotor and some high temp pads ).

um sorry to sound naive but where do you generally drive at 220 kmphfunny, that's exactly what I was thinking.....

okay, yes I have done that, but found that dropping off the go pedal at that sorta speed in the manual resulted in faily decent compressive braking (Revs are like 6000rpm at that in mine) and the aerodynamic resistance is massive.

My proceedure: about 4 seconds off the right pedal and you are alomost back to 150 clicks. Give the brakes a light application (warm things up a little) and dab it on for 3 secs with not too much pressure and you'll find yourself at about 120kmh. Shift down to 4th, give the engine a sec to compressively brake, and give it another 3 secs of brake = 70-80kmh....

Brake however you want then.

i found that when i had brake shudder i was driving about that speed also and the shudder dissapered for a few days then came back but yeah i experiance this also:D

... (Revs are like 6000rpm at that in mine) and the aerodynamic resistance is massive.....
The 3rd gen te to tj were the most aerodynamic 4 door sedans ever (try a Cd of 0.28). Thats
sports car league. The TL-TW are 0.27.

i drive a tj sports and i have the exact same problem and also if i put my foot to the floor the go peddle gets stickey for a while on take of like it get sort stuck witch i find very annoying

The 3rd gen te to tj were the most aerodynamic 4 door sedans ever (try a Cd of 0.28). Thats
sports car league. The TL-TW are 0.27.
That may be so, but look at a ballistics chart on decelleration of a bullet. The faster the velocity, the quicker it decelerates due to resistance from the air.

Magnas were not aerodynamically designed to do 200kmh....

when i brake from 120 to 0 its fine no trouble at all but trying to stop at 200 to 100 i get a lot of shaking of the car is that because of a fault in the braking system or i just need a big brake upgrade?

a) you shouldnt be braking from that speed in the first place

b) you drive a magna which has dangerously CRAP brakes

Even with new pads and my DBA slotted rotors on the front, braking sharply from 150km/h at the drags, my TE feels like a gigantic vibrator :doubt:

Well having experienced the vehicle slowing from 200km to 60km regularly at the drag racing tracks its all a case of brakes, brakes and brakes.

Essentially stock magna brakes - simple - crap. Family car time
Upgraded with DBA rotors / bendix pad combo - slightly less crap.

Upgraded RPW kit with EBC rotors / kevlar pads / twin piston calipers - fantastic. No warpage, no brake fade and no spongy pedal.

Even upgrading to any twin piston caliper package will help but the secret is all in the rotor and pad combination ultimatly. Can't recomend the ebc rotor / pad combo enough it just does everything perfect - brakes straight away cold in the morning, handles repeated hard braking (Within reason of course) and has a fairly long life.

But any person with stock brakes trying to slow down from 200+ - well I can only say you are either suicidal, drunk or just plain stupid :badgrin: You woudl only need to do it once before realising how bad they are. And to do it twice in a row - that counts as suicidal :bowrofl:

But any person with stock brakes trying to slow down from 200+ - well I can only say you are either suicidal, drunk or just plain stupid :badgrin: You woudl only need to do it once before realising how bad they are. And to do it twice in a row - that counts as suicidal :bowrofl:
Second time around you might as well open the door, put your foot on the ground and try to pull it up that way.

Yes, that is how bad the stock brakes are after one very heavy pull up.......

Bedding in my new Bendix ultimate pads one day, my driver's side actually caught alight :shock:
Kept driving (about 80 clicks) until she cooled down a bit.

ive had the same problem, but when slowing down from about 120, not 220. I think my problem is the front struts, cause it feels like the whole wheel is moving

Attention this is not a speed encouragement thread. What you did was dangerous, good or lousy brakes, its plain stupid. If you were caught, you get handcuffed and prison immediately. My friend was 180kmh with a Skyline and resulted nearly to that. I dont think you should be asking about brakes anymore, rather what parachute to open? emergency or the speed brakes? going at those speeds are no longer a laughing matter. You want to die young, go nuts in Germany, there is no speed laws there. All u need in a pabble, stone or anything flying around and u be killed for no reason. that goes for everyone else going above the speed limits, dont regret later, it is always too late then.

If the car shakes and makes some loud noises the ur discs are stuffed.. need a machine.. :D

Attention this is not a speed encouragement thread. What you did was dangerous, good or lousy brakes, its plain stupid. If you were caught, you get handcuffed and prison immediately. My friend was 180kmh with a Skyline and resulted nearly to that. I dont think you should be asking about brakes anymore, rather what parachute to open? emergency or the speed brakes? going at those speeds are no longer a laughing matter. You want to die young, go nuts in Germany, there is no speed laws there. All u need in a pabble, stone or anything flying around and u be killed for no reason. that goes for everyone else going above the speed limits, dont regret later, it is always too late then.


Agreed. Join a car club people! Track days are really fun

mine does the wild shake down from 220 aswell... but yeh i just take off the accelerator and it slows down pretty quick then just ease on the brake till u get down to a slower speed

you will actually find its a problem with your ABS...

(who knows, this dude MAY have been going 200 on a track, didnt specify)

your abs will start to react at those speeds, do NOT just step on them and hold, rather, bake on; brake off; brake on; brake off, repeat until speed is safe

encountered the same problem your talking about, the above remedy is just that, a remedy..

stay safe, stay cool :cool:

I got the same at the drags but I don't have ABS... I think it is more a point of the car (brakes) are not designed for harder braking at those speeds. I would imagine they are getting up to some decent temperatures! It just isn't in the design.

']you will actually find its a problem with your ABS...

(who knows, this dude MAY have been going 200 on a track, didnt specify)

your abs will start to react at those speeds, do NOT just step on them and hold, rather, bake on; brake off; brake on; brake off, repeat until speed is safe

encountered the same problem your talking about, the above remedy is just that, a remedy..

stay safe, stay cool :cool:

I'd say it's got more to do with a machining of the discs required. I had the same prob until I got my fronts done, never had a problem since :D

Attention this is not a speed encouragement thread. What you did was dangerous, good or lousy brakes, its plain stupid. If you were caught, you get handcuffed and prison immediately. My friend was 180kmh with a Skyline and resulted nearly to that. I dont think you should be asking about brakes anymore, rather what parachute to open? emergency or the speed brakes? going at those speeds are no longer a laughing matter. You want to die young, go nuts in Germany, there is no speed laws there. All u need in a pabble, stone or anything flying around and u be killed for no reason. that goes for everyone else going above the speed limits, dont regret later, it is always too late then.


Shhhhh. its so annoying to be mr. righteous in these forums latley. most threads find and highglight issues that werent even the focus. There are so many alternatives to him doing this on the streets... i.e simple track racing which is more than likley where this occured. But yer, not just you, but a lot of people are running off with do-gooder attitutes that werent necessary in the first place and are insulting the original poster without grounds.

:belt:

That may be so, but look at a ballistics chart on decelleration of a bullet. The faster the velocity, the quicker it decelerates due to resistance from the air.

Magnas were not aerodynamically designed to do 200kmh....
Thats true for ballistic (supersonic) bullets and rockets and jets. Not true for subsonic objects.
For subsonic objects in the air or on land, low Cd is very important. Nice round front and a
tappered off end. For supersonic objects in the air or on land, Cd is no longer a factor. They
have very pointy fronts and a blunt end. But as soon as a ballistic object slows down to below
speed of sound, they decellerate very quickly due to the high Cd values (blunt end and pointy
front).

++++
HERRO!


Shhhhh. its so annoying to be mr. righteous in these forums latley. most threads find and highglight issues that werent even the focus. There are so many alternatives to him doing this on the streets... i.e simple track racing which is more than likley where this occured. But yer, not just you, but a lot of people are running off with do-gooder attitutes that werent necessary in the first place and are insulting the original poster without grounds.

:belt:
:gtfo: lol

--Tonba
++++

your abs will start to react at those speeds, do NOT just step on them and hold, rather, bake on; brake off; brake on; brake off, repeat until speed is safe
:

ive been told you shouldnt do that with cars fitted with ABS... ABS works best if you plant your foot firmly on the pedal and hold it...thats what i heard anyways...

++++
Greetings All.


ive been told you shouldnt do that with cars fitted with ABS... ABS works best if you plant your foot firmly on the pedal and hold it...thats what i heard anyways...
Why does that method remind me of the way dee drives...lol

--Tonba
++++

WTF are you guys talking about!!

The ABS system will not 'react' more sensitively at higher speeds. It will only engage when it thinks the wheels are going to - or have already - locked.

The idea of not holding your foot down on the brake pedal constantly is to stop the buildup of heat and therfore reduce brake-fade.

Rofl :d

**stupid Thread**

Rofl :D

**STUPID THREAD**

I'll take it that wcani85 has abandoned the thread.

=CLOSED= for spam relief