Originally posted by traxxasdude
60% traction for turning, 40% traction for throttle and so on.
Unfortunately such a numerical equation will not work. You also have to take into account the design of suspension and similar vehicle dynamics. Touring cars have independent suspension. Just about every 2wd car has a pan chassis with a flexible rear pod that supports a straight axle. On most surfaces encountered by Onroad r/c cars, including racing ones, this type of a configuration is a setback.
Traxxasdude, nothing to insult, but have you driven a 2wd onroad car and compared it to a touring car? If you haven't had the opportunity (as most people haven't had the chance either), I'll make a pretty good example that quite easily shows the performance advatage of 4wd in RC cars:
Ifmar onroad 1/10 fuel world champs. 1/10 2wd onroad and 1/10 Touring car ran simultaneously. Though the 2wd cars have big block .15's and the touring cars only had .12's (which is a huge difference as the track was
wide open at 235x130 feet) the 2wd's had top speeds of 60mph on the straight and tourer's had top speeds of 55 and yet the touring cars had an average lap that was .5 seconds faster than the 2wd 1/10 onroad vehicles. This is 2wd drive cars with wider front/rear tires, and more powerful engines, longer wheelbase and track widths' and high downforce wedge bodies.
Even on this track on which many thought the main concern was HP, it was actually 4wd that made the most difference.