Originally posted by Kremithefrog:
Originally posted by spgoode:
Originally posted by Kremithefrog:
it's better to actually get traction than spin when launching.




Sorry, every car that you can buy for the street will get a better launch with some wheel spin. Spinning the tires gets the engine into its peak torque range so when the tires hook up it doesn't bog down.
Every magazine article i've read that tested an awd car noted this quality.
That's why tests usually include a street start (5-60mph). This negates the advantage wheelspin gives some cars and represents the acceleration of a car without the drivers skill being a factor. And by the way, they are always slower even though they are starting at 5mph.



Not quite. Wheelspin is not advantageous at all. The fact that getting the engine to get power to the ground quicker is, wheelspin is just a result of this and is NOT good. If you can launch hard and get ZERO wheel spin and opposed to launching hard and getting wheel spin (all other factors the same), getting no wheel spin will be faster as this means you're actually moving. Wheel spin is bad and is just slowing you down,,,, though on most street cars is nearly unavoidable on a hard launch.




Allow me to clarify this. I am speaking of manual transmission cars, since on automatics launching is fairly fundamental.
To get the best launch, a racer has to experiment with the right amount of wheelspin to get off the line the quickest. With an awd car normally the best way is to dump the clutch at the appropriate rpm and the clutch slippage will take care of the bogging problem that wheelspin normally would.
Wheelspin does not mean the car is not moving as you say. Only too much wheelspin will cause this.
Please answer me why a street start time (5-60mph) for any given car, is always slower than than the normal 0-60mph time.


Dueling Duratecs '95 SE V6 MTX 0 Mods '04 Mazda6 S Wagon '03 Kawasaki Z1000 But thus do I counsel you, my friends: distrust all in whom the impulse to punish is powerful! Friedrich Nietzsche