hey all,
okay, so here i am, coming off of the highway onto an onramp, and i'm going about 65 in 5th. car feels great, so i drop it into 4th and give it a little gas to see if she can take it. well after a few seconds of high speed turning, i can feel the car start to slip...so i ease off the throttle, probably a little too fast :/
*** kicks out, and i find myself spinning down an off ramp with drops on both sides and light poles galore. i obviously didnt mean to lose control, but was amazingly impressed with how easy it was to control the spin. i looked where i wanted to go, and spun another time and a half before finally stopping in the middle without hitting anything, and no damage to any parts except some smoke from my tires.
the lesson i learned was not to try and push the car on the street, and the cold weather (even though it was dry) doesnt help.
my question is regarding the ACD...i had it on gravel mode, and from what i understand it will lock the diff for 2-3 seconds in that mode. it was about that long until i lost control, and i find myself wondering if i had it in tarmac or snow if i would have been able to keep it from spinning. in tarmac i would have felt the push earlier, since the diff unlocks when you turn the wheel, and if it would have stayed locked a second or so more in snow mode i might have completed the turn. all feedback is welcome, as is any personal experiences. thank you.

btw. there are no suspension mods with the exception of a rear strut brace.

 

I always am amazed that someone can drive 65, give it gas, so lets say 70-75, spin out on an on ramp and not hit something. The onramps here in NY if you did that you would bounce off about 4 guard rails before you finally stopped.

 

Was it raining or gravelly? Why did you have it in Gravel Mode?

Anyway, you got it backwards. In Tarmac mode, the diff locks immediately, but in Gravel and Snow, the diff does not lock right away. It takes longer to lock with each successive change down the line to Tarmac -> Gravel -> Snow. I don't think ACD had anything to do with you losing the rear, though. Anyone disagree?

 

Id like to know why you had it on as well.

 

Seems like its a pretty obviously lift throttle oversteer to me.
Plus cold weather and road surface + Summer Tire Advans.

 

;p answered your question with yet another question.

 

wow! so it seems i have my information backwards...i always thought the different modes kept the ACD *locked* longer, giving more traction and control...are you guys saying i have less control when it is locked up? based on what i thought i knew, i would keep it on gravel on cold days that might disguise black ice or just plain slippery roads. the roads were clear that day, just cold.
when i think of a diff being locked, it is distributing power to all both sides equally, but compromises turning ability. to me it made sense that in adverse weather you would want the diff to be locked so the car is more predictable, as opposed to each wheel spinning at its own leisure. thanks!

 

You unsettled the car first by shifting while cornering, then when the rear end started slipping, you lifted the throttle.

Not an ACD issue.

 

YEA I DO... You stupid shyt! U have no idea what your talking about

J/K Happy Holidays to you and the fam!

 

DO NOT DO THIS


Yes, as said above, you experienced lift throttle oversteer. 911 owners are very familiar with this

Lifting off the gas mid-turn can cause numerous problems.

 

Hmm yea I didn't think AWD helped you when out of control in a turn, but your know how of driving does.

I only see AWD in this car working say when I floor a turn from a stop and get the car sideways and feel how the car snaps back really hard and keeps you going straight again. I would expect AWD to also only be noticeable when flooring it through a hard turn on a track.

Correct me if I'm wrong, but if your not gasing through a big turn it wouldn't matter if the car had AWD,FWD,RWD its just that AWD has the ability to not slip while accelerating through the turn.

 

In a FWD or AWD car, I would countersteer and give more throttle if the rear was coming around. The front will help *pull* you out of the oversteer situation.

Never unsettle the car while turning, especially when you are "on the edge", doesn't matter what xWD your car is.

 

true, happened to my cousin but he dont gots a evo he was driving his friends 01 wrx

 

uhhh...first question: you live in IL, what tires were you using and how cold was it outside?

 

Actually you have it backwards Wartalon...

According to this it opens immediately upon turning the wheel.