Drivetrain Torque steer anyone? R56

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Jan 4, 2008 | 09:41 PM

#26

ezpeasy

2nd Gear

Joined: Sep 2003

Posts: 140

Likes: 0

From: Brea, CA

Quote:

Originally Posted by FLKeith

LSD makes much more the torque steer when cornering. If I floor it on a corner, the car tries to tighten up and you have to force the steering wheel to get it to start to unwind from the corner. This is very repeatable but I don't understand it. I would have expected LSD to try to even up the rate of rotation of the wheels - making the inside wheel try to turn faster and the outside one slower. This should be straightening out the car, not tightening the corner. What is the physics that tightens the corner?

Keith, if you had a locked dif you would get that effect, but the mini doesn't have a locker, it has differential the redistributes power via clutch. A locked diff always trys to go straight.

I believe the LSD in the mini routes power to the opposite wheel based upon slip, therefore when the inside wheel starts to spin, the power is pushed to the outside wheel and thus the car will tighten the line.

Jan 5, 2008 | 07:14 AM

#27

BUIZILLA

2nd Gear

Joined: Nov 2007

Posts: 51

Likes: 0

From: Miami, Fla

Quote:

Originally Posted by flaco

i went to light 7.5 wide ssr's and 215 45 as tires and they did away with the torque steer completely

what brand tires??

Jan 5, 2008 | 08:22 AM

#28

matty125

Thread Starter

5th Gear

iTrader: (1)

Joined: May 2007

Posts: 965

Likes: 1

From: Europe

I was testing it out and actually it is worse if you accelerate mildly through a turn and then hammer while straitening the car out.

Jan 8, 2008 | 03:52 PM

#29

pillar

5th Gear

iTrader: (1)

Joined: Jul 2007

Posts: 748

Likes: 1

From: MD

would alta's psrs help at all? i dont think i could hate torque steer to the point where i wouldnt get a mcs. i just would like to fix it because from what you guys posted... its curable.

thanks!

Jan 8, 2008 | 06:34 PM

#30

Ryephile

OVERDRIVE

iTrader: (2)

Joined: Jan 2003

Posts: 9,009

Likes: 36

From: Metro-Detroit

I brought up a cousin of this subject in my R56 Steering Feel thread, feel free to check it out and give feedback.

From what we discussed, ALTA's PSRS or equivalent stiffer and/or offset front control arm locater bushing may help significantly in quenching the R56's torque steer and LSD tugging.