Polar moment of inertia of current F1 cars

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ismael
GP2 Racer
Posts: 401
Joined: 02.05.2016, 14:58

Polar moment of inertia of current F1 cars

Post by ismael »

I was watching the 2 spins by Alex Albon and the crash by Danny Ric on the free practice of the Styrian Grand Prix and I got wondering. I did not study Physics nor Engineering, but I follow F1 and car racing for some time now, so it's almost the same :lol:

The polar moment of inertia is that concept that I know vaguely what it means thanks to car racing. It's included in RRemedio's Slot and Tyre Editor.
I got thinking: isn't the polar moment of inertia of current F1 cars closer to DTM/Touring cars than to "traditional" F1? These spins made me think that after the driver goes over a narrow limit, it's impossible for him to hold the car with a counter-lock of the steering wheel. The car is lost for good as inertia takes control of it like it happens when a DTM car loses the rear.

What do you guys think, especially RRemedio who surely understands the concept?
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samsepi0l
GP2 Racer
Posts: 318
Joined: 01.03.2019, 01:39

Re: Polar moment of inertia of current F1 cars

Post by samsepi0l »

I study engineering and physics (I am an engineer for a major auto manufacturer in real life). The moment of inertia is something I have thought about tinkering with. I was hoping that raising it would make the car less likely to get unstable in height transition sections (found in many of the original tracks).

To understand this- there are many excellent videos on youtube you can view.

Think of moment of inertia as the want for an object to change it's spinning speed when a force is applied to it.

If you are at rest, and a force is applied to spin you- you will slowly speed up and turn faster as the force is applied. A lower M.O.I. just means that you are easier to get spinning quickly (or easy to stop from already spinning)

Has anyone tried this with the physics editor?
ismael
GP2 Racer
Posts: 401
Joined: 02.05.2016, 14:58

Re: Polar moment of inertia of current F1 cars

Post by ismael »

Hello samsepi0l, and thanks for your answer. Unfortunately I can't be helpful - I never got to change the polar moment of inertia in the editor, as I always felt that the car reactions were perfect and I was afraid of not being able to control it if I tinkered with that :D
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