Why racecar does not have ABS?..

[vitrous]

hello to all..
just starting this thread to fulfill my curiosity about car..
i, longtime ago, just read about how racecar did not have anti lock brake systems..i wonder, why ar/??

to all..can you discuss it here?..why?..

thanks..

regards..

 

[mokomoko]

cause with ABS you can't do fun things with your car.....like drifting

 

[polyxtroy]

Not really. ABS can be tuned to the point when to cut in. The thing is usually in race cars or race car drivers can ideally control their brake pressure with their foot to the point of the tyres grip. In such circumstances, having ABS is pointless & would just further adding complications to the braking system.

 

[BLaCkHoWLiNG]

u need brakes to drift?

 

[prodigy]

Theoretically, ABS lenghtens your braking distance so in a race situation where every meter counts, ABS is not feasible. Besides, ABS adds up more weight to a race car so again, every KG counts.

However, in extreme cases like F1 racing, ABS is banned simply because it'll give an unfair advantage to the driver because it would mean the drivers would brake really really late and in some cases, brake thru the corner.

 

[jambunk86]

ABS lenghtens braking distance?...i thot this kindda thing improves ur braking.now im talking about the normal situation of usage eh.not in the race car.but i think it is the same concept.if ABS lenghtens ur braking distance, then there's no point using ABS.

i dont know about F1 and so on.but u know those good simulator games...they have ABS on f1.it's just u switch it on and off.

 

[polyxtroy]

ABS does not lengthen ur braking distance. It's just a device to take the brake control to some extent away from a driver when the front tyres run out of grip. Against which is better between an ABS and a race drivers foot is still yet to be proven. But for regular joes like us, whenever we have the sensation of our front wheels locking up in a crowded public highway. The lack of three letters like ABS will definitely squeeze me balls in a definitely unwelcome manner.

 

[GT_AUTO]

racer don't need abs cos of the weight saving n the "feel" thingy that they
want to maneuver a race car.they need feed back from the brake.just my
2 cent.

 

[SkYwAlKeR]

- because u already has 3/4/5 point harness...
- because u have a bucket seat
- because u have rollcage
- because u wanna save weight

 

[vitrous]

does the ABS gain more weight to the car?..
the ABS device is really heavy ke?..
i did not know it..my putra have it..but it's size is just a thumb only...
or the ABS things have a device that really heavy? 10KG?...20 KG?...

by the way..thanks for info guys!

 

[mengz]

the whole ABS system consist of more than 1 thing. 1st you have the ABS module, then you have the relay, then you have the wiring harness and sensors, then you have the special wheel bearing for ABS.

 

[kher]

ABS is consider as driver's aid in racing. Braking is also 1 of the skills in racing. Wif ABS a professional driver would know how to fully utilize it and it givs a lot of advantage to the driver. U can brake late and also brake in corners and ABS will do all the adjustment for u. If not mistaken i've read rules in some races where they say ABS is not allowed.

 

[SkYwAlKeR]

ehh... i've mistaken ABS for airbags... lolz....

 

[jambunk86]

haha!

skywalker really makes me laugh in the morning lor.

thanks! ABS does not lenghten ur braking distance.

ABS system actually have sensors running on ur all 4 wheel.that is like wheel speed sensor.if u see something like got teeth one on the driveshaft...that help the wheel speed sensor to sensor the speed.

then got the pressure modulator or regulator something i cant remember.this thing control the pressure of the braking fluid to each tyre.

then the brain of the ABS system...detacts the speed sensor and send msg to the pressure modulator thingy.

so when braking,if the wheel speed sensor detacts one wheel is slower then the others(maybe u r skiding)...the sensor will send a pulse to the ecu(ABS) and the ecu will control the pressure modulator to lower the pressure to that slower tyre untill all the wheel speed r the same.

this is what i understand...and the best i can explain to share at 5am in the morning.and plus my english s&*ks.

thanks to my teacher.hehe.

 

[pimpin323]

you cant install tcs/traction control if you aint got your abs sensors. so gimme your abs if you think you can go faster without them. then i'll overtake you at the corner. anyway f1/rally r running on tcs. what do you think all this evo got on their cars got dry/wet settings for? play play?

 

[FVel]

There are a lot of misunderstanding about the concept of an ABS on this thread. Most posters here got it right but some are just way off.

ABS stands for 'Anti-Lock Braking System'

It's a safety device that ensures the heavy-footed panic brakers do not lock their wheels in an emergency stop.

When you slammed on the brakes way too hard, you lockup your wheels. Effectively you used up all the grip that was previously available when your tyre contact patch was actually in contact with the ground. Since you have now overcomed your contact patch to grip the road, your wheels no longer rotate (hence the term 'locked'). You will just slide stright ahead from your last direction before locking up. Steering inputs will no longer be effective and you lose all ability to steer yourself out of obstacles. Most tests also show that with locked wheels you lose at least 30% of traction, and therefore you need a longer distance to slow down and/or stop.

Contrary to popular belief, an ABS system does not shorten braking distance when compared to a non-ABS system. All it is doing is to prevent wheel lockup. All things being equal, if the driver in a non-ABS system applied maximum braking without locking up, the stopping distance should be as good as an ABS system.

To be at maximum effectiveness in a non-ABS car, the driver needs to 'modulate' his braking so he is just braking just at the threshold of lockup. Cadence braking is another technique taught to users of non-ABS systems whereby if you exceed the lockup threshold, you reduce foot braking pressure to the point where you free the wheel from lockup and regain grip. You hear people talk about Cadence Braking all the time as 'pumping the brake pedal'. An ABS system does the same thing...Only thing being the computer does the pumping for you....many many times faster than the human foot can manage. That is why when ABS is activated during hard-braking, you can feel the brake pedal 'pulsing'.

Incidentally please do not be a clever dick and try out cadence braking on your own without proper professional supervision or instruction. I can assure you it is not as easy as it sounds and you will mess it up with bad consequences if you attempt to do it without proper coaching. Sign up for an advanced driver course if you wish to learn. Always a good investment in my opinion.

 

[jambunk86]

when ur tyre skid.the speed on the wheel is zero.so this when the system works things out controlling the pressure and stuff..

of course when its skidding...very2 minimun traction is there.2 cent.

 

[Northiswara]

because without ABS, it gives the driver 100% control on their brake so they can brake with their skill and drive with their skill.

 

[cmng]

I take out all the ABS on my current 2 car
it really hard to drive with ABS if you doing a lot hard braking

 

[BLaCkHoWLiNG]

uncle ng... aijo..wat are u talkin about... u don need brakes at all la....u so skilled...u don need brakes!