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by elif
1724 days ago
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I'm wrong? I said "Weight in corners hurts you in terms of acceleration out and by the turning force required to change the momentum direction." You are twisting my words to say that i'm arguing weight is a benefit, which is an easier argument for you to attack.... My point is that a low center of gravity and higher downforces are positive influences on a car. The increased weight can be OVERCOME in race duration by using this downforce and by the exceptional performance of motors over engines. Oh look... I made my point without resorting to a reddit attack on your character. |
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You dont add mass just to lower CoM. And downforce from added mass sucks: the downforce, Fn = mg, from weight cancels out
Slam on the breaks. Traction is F = u m g. acceleration is F/m = a
M cancels out so weight doesnt help you. It appears to come out even though.
Except it doesnt cancel out. Traction scales sub linearly. So your stopping times go up.
Same thing for every part of the track.
Corner? Turning torque is proportional to mass. Traction is sub linear to mass.
Acceleration in a straight? Power is constant wrt mass so accel is inverse proportional to mass.
And to all of this you have to add the aero effect which add to mass downforce and aren’t proportional to mass.
So traction becomes:
Ff = u(Fn) = u(mg + kv^2)
For high speeds v^2 dominates so Ff is constant with m so:
A = Ff/m.
Or acceleration is inversely proportional to mass for any driver action.