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Tracking / Autocross / HPDE / Drifting What these cars were built for!


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Old 03-19-2021, 05:44 PM   #15
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Quote:
Originally Posted by timurrrr View Post
Thanks for the detailed answer!
I agree both can be used, and it makes sense that lasers are easier to switch between cars.



Isn't that a benefit of potentiometeres rather than a downside?
If you know the spring rate (hopefully it's linear), and adjust for the motion ration, you know exactly the weight/force applied at each corner. That value will is not going to be not affected by the compression of the tires. When calculating weight based on dynamic ride height, you have an unknown variable (tire compression) in the equation.

I believe you need some kind of filtering/averaging whatever is it that you measure.
It depends really on what you are looking at and looking for in the data. Just because for what we were doing and using it for doesn't mean others would come to a different conclusion. When trying to compare track data to cfd results, I really want to know the full compression of the system including tires.

Yeah either will certainly require filtering/averaging.
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Old 03-19-2021, 08:45 PM   #16
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Sounds like ideally you'd use both the lasers and suspension pots
This way you can calculate the forces, but also calculate how the body of the car is positioned and angled relative to the pavement.
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Old 03-21-2021, 08:18 AM   #17
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Originally Posted by timurrrr View Post
Sounds like ideally you'd use both the lasers and suspension pots
This way you can calculate the forces, but also calculate how the body of the car is positioned and angled relative to the pavement.
If we were doing serious development, looking for every small increase in performance, having both pots and lasers would be extremely helpful for that exact reason.

For our needs, lasers make the most sense and are the slightly more cost-effective way we can implement development across various chassis for aero development.

Thanks,
Eric
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