How do you get someone to understand torque steer?

[firestorm13666]

Well this is my mom's 91 Dodge Carvan with a 3.0V6 SOHC  Mitsubishi with a 3sp auto behind it.She thinks something is wrong with it because it pulls to the drivers side,well most the roads she drove it on are bad roads nothing smooth.I have drove this same van at over 60MPH with my hands of the wheel.Her only come back is i have never drove a car that does that.LMAO this si frist car i can remember she has drove that has around 200hp at the front wheels and as most of you know the CV shafts are not the same langth at all.So how do i prove my mother wrong?

[bhtooefr]

Get a perfectly flat road.

Rent a Evo or a WRX or something if you can. If not, a V6 minivan will work - I'd imagine you could rent an Uplander or something (the idea is to get one that's been maintained well, so fleet = good). Or, a modded TDI?

Put her in it.

Tell her to floor it, with the wheels pointed directly forward, and her hands either not on the wheel, or loosely on the wheel.

Hang on for dear life. :lol:

[zyewdall]

Get a perfectly flat road.

Rent a Evo or a WRX or something if you can. If not, a V6 minivan will work - I'd imagine you could rent an Uplander or something (the idea is to get one that's been maintained well, so fleet = good). Or, a modded TDI?

Put her in it.

Tell her to floor it, with the wheels pointed directly forward, and her hands either not on the wheel, or loosely on the wheel.

Hang on for dear life. :lol:

If you are talking about the subaru WRX, the front axles are indentical, so there shouldn't be any torque steer.  Subaru's have a longitudinal setup, not a transverse.  And actually, all the new subaru's are full time AWD, which would further mask effects of torque steer.

[bhtooefr]

Yeah, duh, forgot about that.

OK, so forget the Subaru.

And the Evo's AWD as well...

My point is, get something powerful that's susceptible to torque steer, and is in very good condition.

[LeeG]

I dont buy the unequal axle length argument about torque steer.  Sure unequal length can mean unequal CV angles and therefore more power lost in the CV with more angle.  But unequal power to the wheels shouldnt make it tourque steer if the road is flat and suspension geometry is good. If the center of steering (kingpin angle) coincides with the center of contact then no torque steer.  
You get torque steer when the center of contact and centre of steering dont coincide: -camber is out or something is moving the geometry around like soft bushings deforming under power.  

The caravans I have driven didnt have much torque or torque steer, but they did have soft suspensions.  I bet your's is deforming control arm bushings under hard aceleration.    My old mazda 626 turbo used to do it, you could change lanes with the throttle on a wet road!