"Echo51" (echo2047)
12/24/2015 at 10:42 • Filed to: None
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"Echo51" (echo2047)
12/24/2015 at 10:42 • Filed to: None | 0
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Is there any tools or calculators to make rough assumed speeds give a certain turn radii and other important specs? The specific turn is a series of turns, a left, right, left, then sharp right. Friend’s heard that the standing challenge is to take them at 100kph/60mph, which i think would be fun to actually calculate the required cornering G-s for. Anybody know of any way?
Smallbear wants a modern Syclone, local Maple Leafs spammer
> Echo51
12/24/2015 at 10:53 |
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I tried this myself when I was insurance shopping, to see if the obd2 nanny they offer for a discount would rat me out (tip: it will) on my favorite corners. Try measuring the corners in google earth and then apply the method shown here:
https://www.physicsforums.com/threads/help-c…
But somehow you need to work in the banking, and I have no idea how to do that.
Aaron M - MasoFiST
> Echo51
12/24/2015 at 11:07 |
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https://www.physicsforums.com/threads/help-c…
I’ll skip to the good part. Based on some dimensional analysis, you get the formula:
(Gs of acceleration) = (speed in mph)^2 * .0067/(radius)
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Aaron M - MasoFiST
> Smallbear wants a modern Syclone, local Maple Leafs spammer
12/24/2015 at 11:11 |
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I just posted the exact same link...d’oh.
As for banking, you can in essence divide the vector into vertical and horizontal components, and the horizontal component would be your answer. Unfortunately, I haven’t done vector geometry since I was in undergrad, but the math isn’t difficult...I just don’t remember it offhand.
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Smallbear wants a modern Syclone, local Maple Leafs spammer
> Aaron M - MasoFiST
12/24/2015 at 11:19 |
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I have literally no idea what you just said. The words are familiar, but most of my math has been stashed in the far corner of my brain with a missing key.
Which is annoying, because math interests me.
tromoly
> Echo51
12/24/2015 at 13:19 |
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Very simple math. For a corner: Acceleration = [Speed (in feet per second) squared] divided by corner Radius (in feet).
Or in an actual equation: a = (V^2) / R
That gives you centripetal acceleration in ft/sec^2, so just divide that number by 32.2 (acceleration of gravity) to get the cornering g-force.
Nauraushaun
> Echo51
12/24/2015 at 17:49 |
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If you want to calculate the speed you could travel through a corner, I think there are too many variables. It depends on how grippy the tarmac is, how wet it is, what the weather’s doing, how much grip your car has, weight, suspension, all of that stuff.
If
you have a number for all of those, you could probably calculate how fast you can take a corner.