Anti-lock Braking System (ABS)

Cars may be different but i've never spiked the brakes to find out lol

 

But I'm pretty sure I got lockup on a rear tire, and only a rear tire, during heavy braking going backwards in my moms cx-9. So maybe everything I know is a lie.
Well it woulda been abs, but it came from the back right tire when I slammed on the brakes.

 

Re: ABS

Quite a bit being maybe 3-6 days all added up? I still consider myself a newer driver and I've been driving for 6 years, 3 years for a living, 1 and a half driving 5 tons.

 

Re: ABS

I meant I've driven a lot for a 14 year old. :|
I, in no way, consider myself an experienced driver. I have driven enough to know how vehicles move, and know what it's like to take them to their limits.
This topic has nothing to do with how experienced of a driver we are. It's abs, it isn't rocket science.

 

ABS IS FOR PUSSIES!


jk

I got to drive a Birkin a fews times at Autocross with Hoosier A comps.... talk about a handful under braking!

 

Re: ABS

And guess why is it like that. Because every civilized vehicle has a braking force regulator which is activated by rear suspension travel - the more the load the bigger pressure is applied to rear brakes or, in this case, the higher it goes during heavy braking the less braking force the rear brakes have. If it wasn't there things would be different, just like in a bicycle - it's not easy to lock up the front wheel there, but there's no problem with locking the rear, right?

 

Hmm I'm seeing lots of back and forth here and I understand why you would never want your rear wheels to lock up before the front (I've played with the e-brake a lot ) but I know that under heavy braking my little 85 Toyota Corolla will lock it's front wheels first every time (yes I know it doesn't have ABS therefore it makes a good guinea pig for this discussion). I think that the front locking first is due to the proportioning of the breaks however and not due to traction because I can lift the back of my car off of the ground by myself. And traction has everything to do with the weight of the vehicle (however stopping distance is adversely affected by weight). I am pretty sure that when my car was engineered that it was engineered to lock it's front wheels first by reducing the rear braking force to a very small amount. Just my insight on the discussion.

 

Do you know if your corolla has drums on the rear? I know my 02 Saturn SL2 is that way and most certainly locks the fronts up before the rears.

 

Truly, both situations are equally as bad, but one could be worse than another depending on your situation. If the front locks up you'll have under steer and wont be able to turn and will plow into whatever is right in front of you. If the rear locks you'll have over steer and even a little movement of the wheel could have you spinning in circles. Typically the rear weals will lock up first since they have the least traction, giving you over steer, so that's probably why they put ABS in the rear wheels first.

Recently, I was able to use a skid-car which simulated both situations (and full lock up of all 4 wheels), once you know what your supposed to do it's fairly easy to recover from both of them. I was also able to put on 100% max braking in a Crown Victoria, just like the one below, going ~60 miles per hour, no wheels locked and I felt the ABS.

Pic of the skid car:

 

I felt like I had to test this out for myself...I own an 89 GMC 2500 Pickup, pretty much what the D15 is based off of; <- not my point.

I slammed the brakes at about 40 on a straight-away and like people have been saying, my rear wheels locked up first, and hard, then the ABS kicked in and I came to a smooth stop.

The front tires didn't even squeal which completely defied my original thoughts.

 

Your 89 truck as ABS? Just in the rear or all 4?

 

I'd guess only rear on an 89 truck, which then makes me think that iheartmods really needs to get his front brakes checked out

 

Re: ABS

From what year is the Grand Marshal?

 

Indeed my Corolla has drums in the rear and discs in the front and I do suppose it merits mention that the rear brake shoes are nearing the point where I will need to replace them soon. That might affect the capability of the rear brakes but I don't think it's enough to change the braking characteristics that the vehicle has. I suppose further on the subject though I tried out my 77 Lincoln Continental and it definitely locked up its rear wheels first, but only just.

 

Just the rear has ABS. All 4 brakes were just redone btw..

 

Re: ABS

Isn't that exactly the same as I just said?

 

personally, IRL, i'd rather have abs vs no abs