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04-22-2021, 12:44 PM | #57 | |
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BRZ/86 stopping distance
Quote:
It changes with velocity, but the curve is highly dependent on the material combination. Rubber on asphalt: |
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The Following User Says Thank You to Transport3r For This Useful Post: | Ultramaroon (04-22-2021) |
04-22-2021, 01:03 PM | #58 | |
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I need more info to interpret that graph. Not discounting it, just... for instance, if it's expressing speed logarithmically, while I see your point, I think it also supports my argument for neglecting it.
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Last edited by Ultramaroon; 04-22-2021 at 01:20 PM. |
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04-22-2021, 02:12 PM | #59 | |
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In the real world, with no downforce, tire grip on the road (effective coefficient of friction) isn't a strong function of speed. |
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04-22-2021, 02:14 PM | #60 | |
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04-22-2021, 04:27 PM | #61 |
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The Following User Says Thank You to strat61caster For This Useful Post: | Capt Spaulding (04-22-2021) |
04-22-2021, 05:06 PM | #62 | |
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Quote:
Fair, the actual part of the curve that you can bookend in a car is probably a shallow slope that’s almost a straight line, but grip does change with wheelspin speed, that’s why you can adjust your lateral friction force (and thus slip angle) with the throttle when sliding. |
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04-23-2021, 06:34 AM | #63 | |
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Quote:
That plot has zero to do with modeling tire grip! AS far as lateral vs longitudinal friction force, that would be different for every tire. Some tires maintain a surprising amount of lateral grip while spinning, some lose any semblance of lateral grip when they start to slip/spin. Very very different characteristics between tires there, you wouldn't be able to have a generic curve modeling "tire rubber" on "asphalt". In the context of this thread, straightline braking grip between tire and tarmac, on a car with no downforce, is not going to be a strong function of vehicle speed. Last edited by ZDan; 04-23-2021 at 06:54 AM. |
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