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Physics vs Telemetry

Author Topic: Physics vs Telemetry  (Read 681 times)

Offline Seanus

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Physics vs Telemetry
« on: January 11, 2020, 10:54:27 PM »
Load any car into a perfectly flat track, there are several test tracks available with this.
Enable DEV apps and open Telemetry and select the 'Load kg' preset.
Default set up should see the loads equal left to right, now change setup by raising the right side spring rates and ride heights and do the opposite to the left side.
The expected result should be that the left side loads should now be higher than the right but, in my limited testing the left rear load increases but the Bloody opposite happens at the front, this is physically impossible no?

(Noticed this when I looked at my Buick and Pontiac and even on a symmetrical setup the loads aren't symmetrical.)


Further, I already know the telemetry for the wings can not be relied on, however the physics seem to work.
I gave a car 100 units of downforce over the rear axle and 100 units of lift some 10 metres infront of the front axle. The resulting vector should be many units of lift at some point infront of the front axle and this is reflected when driving the car as it eventually flips over backwards.
But the Telemetry reads 0 kg of downforce, it seems to have taken the +100 units and the -100 units and just cancelled each other out. IIRC it also says this 0 kg of force is acting some 1000000000000% forward of the front axle.


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Online rooshooter

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Re: Physics vs Telemetry
« Reply #1 on: January 12, 2020, 07:07:16 AM »
"Why is it so"  :). I cannot even start to imagine what is going through your head at times Seanus, I am just glad it is your head and not mine, I have enough trouble sleeping as it is :'(. Anyway all good stuff to contemplate.
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Offline Wally

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Re: Physics vs Telemetry
« Reply #2 on: January 12, 2020, 08:53:10 AM »
Maybe it's a result of chassis stiffness, twisting the overall chassis and raising and lowering loads in opposite corners. I assume your start (even) loads are different front to rear, so jacking up one side might be twisting the chassis.
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