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FastestLaps  3d ago

Here's a treat for those who like the "Lists" section: https://supercarlists.com

Data is from fastestlaps.com, of course. I will be adding more lists over time.

 

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196ss  3d ago

Unfortunately there are too much mistakes:
Ferrari from 1957 with 3688 lbft torque?
Nissan GT-R 200-0 in 32m?
Maserati Bora - FWD?
And many others.
List of cars with biggest cylinders is almost totally wrong...


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SpeedKing  3d ago @196ss

Well one only needs to look at the highest speed list and the fastest car is obviously the Agera RS which completed two runs 284 and 270 mph for an average of 277mph not the Koenigsegg One :)


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SpeedKing  3d ago

This Wikipedia list of fastest production cars is more accurate :)
https://en.wikipedia.org/wiki/Production_car_speed_record


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FastestLaps  3d ago @196ss

All those are quick & easy fix. Actually these list pages help me track down mistakes/typos in FL data :D


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benedekpuskas  3d ago

arnold-thumbs-up.jpg?550x800m


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196ss  3d ago @FastestLaps

Would also interesting to see a list of road cars with the highest downforce. We have a lot of claimed figures from manufacturers, and some magazines actually test this parameter in the wind tunnel.
Of course, the values are given at different speeds and in different units, but we can use some kind of a coefficient of downforce, by dividing its value by the square of the speed. For cars with active aerodynamics, we can use only numbers in the high downforce mode.
I would also like to see a list of a cars with the highest rigidity coefficient for body torsion.


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FastestLaps  3d ago @196ss

I wish I had that data. I don't know if downforce scales like wind resistance. It is possible that at certain speeds unpredictable things happen - vortices form, wind flow from some places starts to cancel or amplify some downforce in other places etc. I know zero about aerodynamics to be honest, maybe someone who knows something can tell if aero downforce can be estimated with just square of speed.

But in any case, I don't even have data for tested downforce at any speed.


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SpeedKing  3d ago @FastestLaps

Practically all downforce data comes from manufacturers and the closest universal measurement point is generally between 240-260 km/h.


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FastestLaps  3d ago @SpeedKing

If it all was measured between 240 and 260 then it probably could be estimated reliably for, lets say, 250. But it some cars had data for 250 and some for 100, I don't think calculated estimates for 200 or 150 would be accurate.


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SpeedKing  3d ago @FastestLaps

I should have clarified, i was referring to performance cars capable of 300+ km/h. Cars only capable of say only 250 km/h max rarely have high levels of downforce because it's not generally necessary.


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SpeedKing  3d ago @FastestLaps

Look at the Jesko Absolut for example it has about 40kg of downforce at presumably 150mph and at closer to 300mph it would be approx 150kg whereas the Jesko has @ 250km/h – 800 kg, @ 275km/h – 1000 kg, Maximum – 1400 kg according the Koenigsegg. Big difference


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196ss  3d ago @FastestLaps

«It is possible that at certain speeds unpredictable things happen - vortices form, wind flow from some places starts to cancel or amplify some downforce in other places etc.»

No,
the downforce, in a fairly accurate approximation, is directly proportional to the square of the speed of the airflow relative to the car, as well as the drag (with the exception of active aero).
I remember an article in Sport Auto about 458 Italia. The 458 had movable plastic elements in front. It was assumed that with speed increasing, they had to deform due to air pressure, and thus create additional downforce on the front axle. But as a result of measurements, it turned out that the downforce at 200 kph was exactly 4 times more than at 100. I.e., at these speeds, the effect of these flaps is absolutely not noticeable.

8fbe33f2bd63.jpg?550x800m


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196ss  3d ago @FastestLaps

https://www.reverie.ltd.uk/Downloads/ReVerie_Wind_Tunnel_Test_Session.pdf
The link shows results of testing Lotus Exige in the wind tunnel with all kinds of spoilers, diffusers and flaps, as well as in stock form. You can see that the test was performed at 100 and 150 mph, and the calculated coefficients of drag and downforce on the front and rear axles do not differ much (they are within the error range of the measuring equipment).
This pattern can be traced in the declared characteristics of automakers. For example, for the Ferrari Enzo, it was claimed that due to changing positions of the movable ribs installed in the front ventilation ducts and diffusers, at 200 kph, the downforce increases from 190 kg to 344, and reaches 775 kg at 300 kph. At 350 kph in low drag mode, the downforce specified is 585 kg. If we divide these numbers by the square of the speed (in m/s), we get the following picture:
190/(55,555x55,555)=0,0616
344/(55,555x55,555)=0,1115
775/(83,333x83,333)=0,1116
585/(97,222x97,222)=0,0619
This means, that for a car in "high downforce" or "low drag" mode, the downforce coefficient doesn’t change at different speeds.

As for the lack of a data, for the last decade, for almost every track oriented car, manufacturers had given some information about downforce. Sometimes these are specific values, sometimes something like "15% higher than its predecessor". In any case, I think it would be interesting to systematize and compare all this information. Since we already have "emissions" and "fuel consumption" in the car pages on this website, why not add downforce?


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FastestLaps  2d ago @196ss

Obviously downforce is much more relevant than co2 and fuel consumption but there are no standardized speeds that all manufacturers would use so it could only be estimation. And I dont even know where to look for that data. Maybe you can compile a table with three rows:

1) URL to fastestlaps car page
2) speed
3) kilograms downforce

If for, lets say, 40 cars there would be 3 to 4 speeds, I could add all of them as individual metrics. If there were many speeds then it would have to be approximated to just one speed and they would all be classified as estimates.


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196ss  2d ago @FastestLaps

Ok, I'll make it.


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benedekpuskas  5d ago

@Fastestlaps

Did you remove ToS? I can't find it anywhere...

 

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FastestLaps  5d ago

I might have removed the link but its there: https://fastestlaps.com/tos


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benedekpuskas  1w ago

@FastestLaps

Do you add Throttle House lap times? There are lots of lap times on their youtube channel

 

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FastestLaps  1w ago

I need to look into them. I haven't seen any of their videos yet.


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benedekpuskas  1w ago @FastestLaps

I also suggest PDriveTV

https://www.youtube.com/channel/UCfT-ag8iAO1wpY2VH8QgUiA


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benedekpuskas  2w ago

Wow you actually did it... I wouldn't have thought!


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benedekpuskas  3w ago

Try translating the site to your language with google it's hilarious :D


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benedekpuskas  3w ago

Why some of the videos posted in comments only show a sad face on a grey background?


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Hoppelmoppel123  1m ago

I found a website that has every Auto Motor Sport issue from 1946 - 2000.
https://www.zwischengas.com/de/archiv/index.xml
To look at all the scans you have to pay 3.30 € per year.


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benedekpuskas  1m ago

This MUST BE added to the stickers!!!

29cf27122b7e.jpg?550x800m


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benedekpuskas  1m ago

There was a funny bug recently, I tried to reply to a post, but as soon I clicked 'Submit' the post I was replying to was probably deleted.

startled-doge.jpg?550x800m


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slowestlaps  2m ago

How can i post my own picture in a comment?


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dante  2m ago

25b539d73016.jpg?550x800m


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benedekpuskas  2m ago

I try it now

its-shmee.jpg?550x800m


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FastestLaps  2m ago

Added ability to easily add stickers (pictures) to posts (hit the image button next to "Submit".

Any suggestions to what should be added to the sticker list is welcome. Post your images here, as reply.

Preferably those images should be wide format (like 16:9), not very small (preferably 600 or more pixels wide) and animated GIFs are not supported yet.


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FastestLaps  3m ago

Has anyone ever been redirected to scammy "you won prize" website while visiting fastestlaps.com?

This is question specifically to those who do not log in and see ads.


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benedekpuskas  4m ago

I couldn't connect to the website for hours. (error connection timed out). Was it only my problem?


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FastestLaps  4m ago

Fastestlaps now has "trending" section at home page. And thanks to our good friend and colleague Dr Cosimo, the number one trending car on Fastestlaps.com right now is Saleen S7.


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Cauf40f50  5m ago

[image redacted]


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benedekpuskas  5m ago

There's a problem with posting pictures. When I try to post a picture, it's there for I little while, but then it disappears.


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FastestLaps  7m ago

FYI: do not copy paste articles from other publications.


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Botan626  8m ago

I don't receive new reply notifications recently.

Timeline

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Hoppelmoppel123 44m 

added data for Ferrari 550 Maranello, data for Lamborghini Diablo 6.0 VT, data for Porsche 959, data for Lamborghini Diablo and data for Ferrari F40

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Hoppelmoppel123 3h 

added data for Lexus LC 500, data for VW Passat Variant 1.8 TSI, VW Passat Variant 1.8 TSI, data for Skoda Superb Combi 1.8 TSI, Skoda Superb Combi 1.8 TSI and more

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