AWD feels like RWD?

[fastestdsm]

So why do I feel like my awd eclipse seems like a rwd car. The rear end fishtails sometimes not enough to lose control or anything but I can feel the rear fish tail. Is this how awd cars are supposed to be?
Ive driven two rwd beamers and it feels the same just not as much, does that mean that the awd is failing? Can anyone help me? or explain to me?

 

[xSojooxShotzx]

Well,

I know what power split is... But, the GSX/TSi-AWD has a 50/50 power split in manual then? That's is actually really cool. I was assuming it was like the older Subaru's with the 90/10 split or the 80/20 but not a full 50/50. With this in mind, why isn't the Eclipse/Talon used in more racing events?

Howie

 

[out there]

i think it's pretty safe to say that no one on this forum actually knows the tq split between front and rear, there have been several discussions on it

 

[Defiant]

The VC LSD will (should) probably divert more power to the front wheels on turn in (braking), thus making it seem more like a FWD. As somebody mentioned, if the center diff has been welded or replace with a spool, this could definitely cause a more Oversteer/RWD feeling.

Nope. The VC in DSMs isn't set up that way. It only goes to solid if it feels a wheel slipping. It doesn't move torque from end-to-end.

 

[Defiant]

changes under conditions. the 50/50 split is given perfect (and equal) traction conditions at all 4 corners. If your rear end squats during acceleration so much that your front comes up and loses traction, more tq will be diverted to the rear.

Nope, again. It doesn't distribute torque, it only goes solid if a wheel slips.
A DSM will never have enough power and grip to pick the front tires up enough to affect traction. The engine and transmission are ahead of the front wheels.

 

[Defiant]

Well,

I know what power split is... But, the GSX/TSi-AWD has a 50/50 power split in manual then? That's is actually really cool. I was assuming it was like the older Subaru's with the 90/10 split or the 80/20 but not a full 50/50. With this in mind, why isn't the Eclipse/Talon used in more racing events?

Howie

Because they're even fatter and sloppier than I am. And, they were regulated-out by the sanctioning bodies.

 

[Defiant]

i think it's pretty safe to say that no one on this forum actually knows the tq split between front and rear, there have been several discussions on it

Anyone who's read the numerous posts I've put up quoting the factory explanation of DSM AWD torque split, and it being 50/50, should understand it fairly well:
http://www.dsmtuners.com/forums/showpost.php?p=296106&postcount=12
http://www.dsmtuners.com/forums/showpost.php?p=715304&postcount=23

 

[Shane2GSX]

The way I understand it from the links above posted by Defiant..

- Initially 50/50 Front/Rear.
- If it senses traction loss in either of the two front wheels it diverts power to the rear wheels.
- If it seneses traction loss in either of the rear wheels, it deverts power to the front, that is until the Rear LSD catches up (assuming you have one) and the rear stops losing traction, thus going back to 50/50 probably rather quickly.
- Since the rear has LSD, when you lose traction from the rear, it should go back to 50/50 faster than when the front loses traction (Assuming no front LSD).

I don't know that any of this is correct, it just seems to me that's how it should work after reading the links..

That being said, according to edmunds.com, all 99's came standard with LSD. LSD was an option on 97-98's. Not sure about the rest. I know mine has LSD and it does fishtail if I take a quick right turn and give it a good amount of gas. However, it only does this for a second or so, until I guess the LSD catches. So in that sense, yes it does feel like a RWD car for only a second or so.

 

[weith1111]

yes im running stock wheels, also one time, i got off the freeway at about 60, the turn was a 25 mph and the car fishtailed, is this suppossed to happend with awd if going fast enough?

If you are doing over double the posted and ON THE THROTTLE the ass will come out. If you are braking while turning it digs in like a FWD.

I challenge anyone to take a 90* turn at 40mph and over 50% throttle, especially on the 205mm bicycle tires like this guy probably has. You'll be posting pictures of how the rear of your car slammed into the person waiting to turn left on the crossroad.

Nothing is wrong with this dudes car.

...well other than it sounds like someone raped the suspension setup. Getting that sorted out (alignment, ball joints checked, tires checked out/balanced, etc) will make the car handle a lot safer I'd bet.

 

[Defiant]

The way I understand it from the links above posted by Defiant..

- Initially 50/50 Front/Rear.
- If it senses traction loss in either of the two front wheels it diverts power to the rear wheels.
- If it seneses traction loss in either of the rear wheels, it deverts power to the front, that is until the Rear LSD catches up (assuming you have one) and the rear stops losing traction, thus going back to 50/50 probably rather quickly.
- Since the rear has LSD, when you lose traction from the rear, it should go back to 50/50 faster than when the front loses traction (Assuming no front LSD).

There's not that much to it. The front and rear are connected by a viscous coupler. When it feels a difference in speed between the front and rear axle speeds, it begins to go solid. If there's a significant difference, it locks up. There's no computer control, there's nothing fancy to it, it's just drive and driven discs with silicon goo between them, and if the goo gets heated its viscosity goes through the roof and the discs are pretty-solidly (enough that if you try and tow the car with the front end in a cradle, the rears will try to slide until the coupler fails) seized together.

 

[MyBeatGSX]

Nope, again. It doesn't distribute torque, it only goes solid if a wheel slips.
A DSM will never have enough power and grip to pick the front tires up enough to affect traction. The engine and transmission are ahead of the front wheels.

You haven't been in my car with the dead old shocks. I can bang second hard going around a corner (and not even cornering hard), and pick the inside front tire up OFF the ground, people have witnessed it happen.

Even in a straight line, the fronts chirp second gear, so they must be unloaded enough. Maybe this guy needs some new shocks, as do I.

As for his oversteer situation. Just relax on the corners, why are you taking a recommend speed of 25mph exit ramp at 60mph? I'm assuming you're coming blasting into it and then getting on the brakes hard. These cars are well know for snap oversteer under those conditions. Unloading the rear tires with braking is only exaggerating the already very front biased weight distribution. Even most FWD cars will rotate under those circumstances.