Originally Posted by M3Armand
You know, the thing that bothers me about this supposed torque steer is that before there were shaft driven cars, they were all belt driven.
So wouldn't one think that after "all the testing and racing that all these pros would do before releasing a car" that they would notice this "torque steer" off the bat and stick to belt driven cars? I.e. - not even bother releasing the shaft driven cars???
And also, BEFORE there were ever ball diff cars, every single one of them was "gear diff". My Tamiya Grasshopper had a gear diff. I wouldn't have thought of "paying extra" for them now.
The reason ball diffs came around was that gear diffs would spin the inside tires in a turn = the same way in a real car. This is why they outfit sports cars with a "limited slip differential". The ball diffs act the same exact way. So I really don't understand why people are going back to gear diffs AND "spools" at the front of the car...
You have to put the developments into historical context.
Back when the ball diff was created, electric cars either had no diff at all, or a completely unsealed and truly "open" gear diff. The cars also has a lot less power. The lightweight, easily adjustable ball diff was an improvement.
Now, we have sealed gear diffs filled with silicone fluid to create a tunable limited slip effect, and ample power in almost every class.
Advantage gear diff again.
Shaft drives (in touring) again came from an era when there was a lot less power. Shaft drive is more efficient, especially compared to the small pulley belt drive systems popular at the time. But a shaft drive car never won the worlds. Put any reasonable amount of power in there and torque steer will happen. This makes the car unpredictable and inconsistent between left and right turns.
Advantage belt drive again.
Spools are silly, but they make the cars run well when we don't yet have a diff that can have a very strong limited slip action at the front. Perhaps the new generation of gear diffs with 100k-plus oils in them will consign the spool to the history books as well.