is this normal for the a "slip" light to come on if I take a turn fast??

 

Yes, due to the fact that one wheel looses traction.

SKYLINE 350GT, NISMO R-Tune.

 

so what is the real diff between vdc and lsd?

does lsd just give power to wheel while vdc hits break, and what is distinction of when each would come on compared to other

04 6mtC, DG - possibly most babied G on the board.

 

so when the light comes on, i am in trouble or is it just a warning?I didnt feel any loss traction....it was wet outside though...

 

awesome video!!!

 

StudlyMobile (Gfreak)
01/09/04 05:17 AM

so what is the real diff between vdc and lsd?

does lsd just give power to wheel while vdc hits break, and what is distinction of when each would come on compared to other
__________________________________________________ _

VDC is the stability control system that is looking for difference's in speed between all the wheels. So, you ask, isn't LSD supposed to limit or prevent slip from the rear wheels? Yes it functions to limit slip, BUT the way the viscious limit slip functions is like this. The viscous diff responds to a difference in wheel speeds, relying on the slipping plates to heat the fluid and tighten, which means it must react to wheelspin AFTER it begins. So, it requires some slip in order to heat the viscious fluid up to cause it to lock up. That is why you will still see a slip light come on with a stock LSD. What you may see happen is that with the VDC on it will kick in and stop the one tire from spinning a bit before the viscious fluid has a chance to harden and lock, I'd think the colder it is the more likely it would happen.

"All that's necessary for the forces of evil to win in the world is for enough good men to do nothing.”
Edmund Burke

G35 6mt

 

The Slip light is just a warning from the cars wheels sensors. It's telling you that at some point on one of the wheels slip was detected. It's a warning just like any other to get your attention and say "Hey buddy the rear wheel is slipping some though you may not hear it and the **** of your beautiful G is about to come swingin around and spin you out."

I wouldn't worry about it unless it happens frequently even at low speeds when you know the car is safe and has traction. Then that could mean a sensor is defective or somethin. VDC is a program in the car's ECU (computer/brain) that uses differant applications of the ABS system and brakes as well as decelerating the engine by cutting the fuel/air input. This program uses any one or a combination of these systems to bring the car under control when it detects instability in any area of the car.

Thus it restores the normal driving condition by (V)ehicle (D)ynamics (C)ontrol. Keep yourselves safe out there with your G's. Peace.

-Jason
Laser Red '03 6MT

 

that is an interesting point, cuz I've never thought about the 2 things together... as far as I understand, this is how things work:

the LSD allows your rear wheels to rotate at slightly different speeds for slow turns so that you get a smoother ride. but when you make a fast turn, it is suppose to NOT let the wheels rotate at different speeds, thus letting you slide around the corner.

now the VCD is suppose to detect slippage, for whatever reason and cut gas/appy breaks to maintain traction.

now my question is, why do you want to limit the slip (or speed difference) between your rear wheels? wouldn't it allow you to turn faster if the outside wheel gets to spin faster?

 

OK i then i have a question.... when i used (summer time) to spin my tires or chirp them on accident my slip light started blinking...but now in the rain (winter time) when i feel my tires spinning my Slip light does NOT turn on... and yes VDC is on....so i was just wondering why it is not picking up my tire spin.....thanks

PS! Oh yea, but my low tire pressure gauge is on...and the damn thing won't stay off.... so i think i got a nail...or it is just the cold weather.


2004 G35 Coupe 6MT
www.zombie-house.com

 

this is what infiniti says about vdc - vehicle dynamic control

A sudden change in surface consistency can affect your car's stability during evasive driving. Vehicle Dynamic Control* uses an array of sensors to help determine your steered path and to help keep you in control. If your vehicle begins to understeer (plow forward) or oversteer (fishtail), VDC applies appropriate brake pressure to individual wheels and/or reduces engine output to help keep both ends in line.


An LSD or limited slip differential has nothing to do with the VDC. The purpose of an LSD is to get power to both rear wheels instead of only one. VDC is more like a traction control system.

The LSD doesn't really come "on" or "off" like the VDC does. It's mechanical and is inside the rear. It's always working as it was designed to work. It allows "limited slip" on turns to prevent the inside tire from turning as fast as the outside tire. And no slip while going straight. So both tires get equal power.


turn the VDC off and do a burnout.
If you have an LSD both tires will spin, if you don't only one will.



2003 G35 Coupe 6MT/Black/Graphite/15% tint

 

"the LSD allows your rear wheels to rotate at slightly different speeds for slow turns so that you get a smoother ride. but when you make a fast turn, it is suppose to NOT let the wheels rotate at different speeds, thus letting you slide around the corner.
"

the differential is what allows the rear wheels to rotate at different speeds.

In a limited slip differential, it only allows this to happen on turns. And doesn't really help you slide around a corner. The rear wheel drive is what helps.

In a locking differential, no slippage is allowed. 4 wheelers use this to get better traction while off-roading. And turn it off while on-road.

"now my question is, why do you want to limit the slip (or speed difference) between your rear wheels? wouldn't it allow you to turn faster if the outside wheel gets to spin faster?
"
You want an LSD, so you can get power to both rear wheels instead of one. this gives you more traction a better acceleration.
In both an LSD and a regular differential, the outside wheel will always turn faster then the inside wheel. This is where the limited slip comes in. If it didn't, the inside wheel would be smoking even on slow turns.

basically, the LSD works like a regular differential on turns and a locking differential on straights.

2003 G35 Coupe 6MT/Black/Graphite/15% tint

 

Remember, viscious limited slips function differently than glen torsen (geared) types and clutch types. The only way a viscious limited slip can do it's got of preventing slip is for it to allow a bit of slip, it is required to make the visciouis fluid harden and lock. The other type's of limited slip are superior because they function to prevent slip from happening in the first place. And a viscious limited slip doesn't care if your going straight or cornering, if one wheel slips it will harden the viscious fluid eventually and stop said spinning wheel. It's not the greatest system, Nissan really should have used a geared LSD system, cost was no doubt a factor, sigh.

"All that's necessary for the forces of evil to win in the world is for enough good men to do nothing.”
Edmund Burke

G35 6mt