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Date: Wed, 24 May 2000 10:03:52 PST
From: (Everett M. Greene)
Subject: Re: Viggen is stupid.

Winston <> writes: > Viktor Haag <vhaagnopsamnet> wrote: > > > Could someone please explain what is meant by 'torque steer'? > > Perhaps I'm just not enough of a conoisseur to understand the > > term properly... > > Torque steer is the unpleasant phenomenon which occurs when the > driveshafts which run between the transmission and the front wheels are > of different lengths, causing more torque to reach one wheel than the > other (torque=forcexlength). So when you mash the accelerator, more > torque reaches one wheel than the other, causing the steering wheel to > twist to one side. > > However, as someone pointed out, the Viggen supposedly has equal length > half-shafts in its front drive train. Therefore, torque steer is > impossible-- the same amount of torque will be reaching each wheel. The > sensation of torque steer could be caused by so much power reaching the > front wheels that each tire alternately breaks looks, causing that an > odd sensation people have been taking for torque steer. Engine torque will cause the vehicle to attempt to rotate about the longitudinal axis as well (unless you have a cross-mounted engine). If you stomp on the power hard enough, suspension geometry, wheel slippage, etc. will cause a steering effect. > The problems in delivering 230 horsepower to the front wheels of an FWD > car are not unique to the Viggen... it is a problem inherent in this > driveline setup.

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