Re: How does torsion-level keep the car level on braking and acceleration?
Posted by humanpotatohybrid On 2022/7/16 10:52:33
Thanks for the link to the nice video, I've watched about 1/2 of it so far.
So it's explained a bit more clearly in the video and it appears to be what I said in my previous response. First, as Ross mentioned the TL system has the effect of simulating supporting the car at two points near its center of gravity, not four points as it is supported in reality. But then my question was, what keeps the car from tipping forward or back on its center of gravity on acceleration? The answer is that the torque arms in the rear were intentionally designed such that the wheel torque on forward acceleration reacts through the torque arms, twisting them to raise the rear end of the car, counteracting the inertial effects that would otherwise make the rear end drop. The opposite effect occurs when braking. For whatever reason, the torque effect is stronger than the effect it cancels, making the car raise slightly on acceleration and drop slightly on braking (the change in height in the rear being transmitted to the front thru the TL system).
In the image below, the blue arm is the torque arm. The green arrow is forward wheel spin, and the red arrow is the reaction torque on the axle/torque arm assembly, transmitted through the torque arm it has the effect of pushing the car body up and the axle down, as shown by the pink arrows.
Assuming this explanation is accurate then I now understand it as well as I was hoping to.
So it's explained a bit more clearly in the video and it appears to be what I said in my previous response. First, as Ross mentioned the TL system has the effect of simulating supporting the car at two points near its center of gravity, not four points as it is supported in reality. But then my question was, what keeps the car from tipping forward or back on its center of gravity on acceleration? The answer is that the torque arms in the rear were intentionally designed such that the wheel torque on forward acceleration reacts through the torque arms, twisting them to raise the rear end of the car, counteracting the inertial effects that would otherwise make the rear end drop. The opposite effect occurs when braking. For whatever reason, the torque effect is stronger than the effect it cancels, making the car raise slightly on acceleration and drop slightly on braking (the change in height in the rear being transmitted to the front thru the TL system).
In the image below, the blue arm is the torque arm. The green arrow is forward wheel spin, and the red arrow is the reaction torque on the axle/torque arm assembly, transmitted through the torque arm it has the effect of pushing the car body up and the axle down, as shown by the pink arrows.
Assuming this explanation is accurate then I now understand it as well as I was hoping to.
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