Stopping Distances

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seadog777

seadog777

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seadog777
I recently had a mild whine about the Huayra's stopping distance, and a poster rightly pointed out it's a very fast car. I have also whined about the One-77 and probably others!

So, for fun, I decided to do some "tests" on various cars. Not properly controlled at all, very rough and subject to my reaction times at the time!

Used the big oval, all cars listed max power, minimum weight, racing softs (yes, even the Fiat!), TC-1. Started to brake at the 1000 metre mark (some cars took almost that long to get to top speed), more or less, made a reasonable estimate as to where stopped between 100m lines, used follow-cam as it was easier to spot where the cars stopped.

Here are the "results" in no particular order... Car - max speed (KM/H) - stopping distance (M).

330 P4 1967 (Gr. X) - 365 - 300

XJR-9 1988 (Gr.1) - 369 - 220

R18 '11 (Gr.1) - 360 - 190

RC F au Tom's 2016 (Gr.2) - 295 - 150

GT-R Nismo GT3 2013 (Gr.3) - 301 - 170

458 Italia Gr.4 (Gr.4) - 282 - 180

Huayra 2013 (N700) - 425 - 430

Veyron 16.4 2013 (N1000) - 402 - 470

One-77 2011(N800) - 392 - 420

500 F 1968 (N100) - 163 - 90.

I think this scientific experiment shows something very clearly; the faster you go, the longer it takes to stop. :lol:


That Huayra has an awesome speed!!
 
seadog777
I recently had a mild whine about the Huayra's stopping distance, and a poster rightly pointed out it's a very fast car. I have also whined about the One-77 and probably others!

So, for fun, I decided to do some "tests" on various cars. Not properly controlled at all, very rough and subject to my reaction times at the time!

Used the big oval, all cars listed max power, minimum weight, racing softs (yes, even the Fiat!), TC-1. Started to brake at the 1000 metre mark (some cars took almost that long to get to top speed), more or less, made a reasonable estimate as to where stopped between 100m lines, used follow-cam as it was easier to spot where the cars stopped.

Here are the "results" in no particular order... Car - max speed (KM/H) - stopping distance (M).

330 P4 1967 (Gr. X) - 365 - 300

XJR-9 1988 (Gr.1) - 369 - 220

R18 '11 (Gr.1) - 360 - 190

RC F au Tom's 2016 (Gr.2) - 295 - 150

GT-R Nismo GT3 2013 (Gr.3) - 301 - 170

458 Italia Gr.4 (Gr.4) - 282 - 180

Huayra 2013 (N700) - 425 - 430

Veyron 16.4 2013 (N1000) - 402 - 470

One-77 2011(N800) - 392 - 420

500 F 1968 (N100) - 163 - 90.

I think this scientific experiment shows something very clearly; the faster you go, the longer it takes to stop. :lol:


That Huayra has an awesome speed!!
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Wouldn't it be better to work out the stopping distance for each car from the same speed? So start to brake at the 1000 metre mark when going 150km/h (or whatever speed). Then you'd get a much better idea as to which cars have the better stopping distances. Or am I reading this wrong and that is what you did?
 
watto79
Wouldn't it be better to work out the stopping distance for each car from the same speed? So start to brake at the 1000 metre mark when going 150km/h (or whatever speed). Then you'd get a much better idea as to which cars have the better stopping distances. Or am I reading this wrong and that is what you did?
Click to expand...

That probably would be better, but too much like hard work! No, you're not reading it wrong - I took each to its maximum top speed (which is why I left it to the 1000m mark) and then slammed on the anchors! Just for fun and just to see if the Huayra was a bad as I thought it was.... it wasn't, just much faster!!

AfraidRacer
Nice! What BB were you using?
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Left them all at zero.
 
One fairly accurate method I have been using since GT3 is to make all cars reach certain speed, like 250 kph or so, and then with a help of data logger measure stopping distance from 230 to 60 kph. That way you can start braking anywhere as long as the straight section isn't bending, curving and full brakes are applied during 230 to 60 speed reduction.
 
Matej
One fairly accurate method I have been using since GT3 is to make all cars reach certain speed, like 250 kph or so, and then with a help of data logger measure stopping distance from 230 to 60 kph. That way you can start braking anywhere as long as the straight section isn't bending, curving and full brakes are applied during 230 to 60 speed reduction.
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Hi Matej.... is there a data logger hidden somewhere? I'd be really interested to do 0-100km/h acceleration trials, but can't work out a way to do it!
The only way I could see to do what you and Watto79 have suggested is to do a replay and try to work things out from there - which is way too much effort!
 
daan
There seems to be an opinion that some high powered N-cars in GTS have been fitted with dodgy brakes made out of cheese and McVities digestives,
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daan
As all the cars are doing different speeds, this is a bit pointless.

Here's a more scientific one.
Click to expand...

That's a much more sound way to do it, and a better thread! I do like the McVities comment...!

My post isn't "serious", just did it for fun. One interesting thing that did come out (and I wasn't expecting) were the top speeds. Real eye opener!
 

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