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01-20-2021, 01:34 PM | #67 |
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I was watching on YouTube and did some reading on the effectiveness of a wing as function of the total weight of the car.
My apologies, but I could not find the reference out there quickly. From at least two sources, the wing (a real wing, not the GTS spoiler) has very little effect on a 3600Lbs car. It is very helpful for a 2300Lbs - 2600Lbs race car. While the wing will still generate the downforce, as indicated by the Wing specs, it will not generate the lap time benefits on E92 M3 that was not striped down. It involves calculations that I am not expert on, but intuitively the G forces as proportion to mass don't help the tires grip more by adding more weight (downforce) Sorry I can't find the links |
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01-20-2021, 01:41 PM | #68 | |
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01-20-2021, 09:20 PM | #69 |
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BS. In the paddock it's worth 5 secs per lap. Fact.
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Bartledoo2691.50 |
01-20-2021, 10:53 PM | #70 |
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Anyone have any pics of the underside of their mounting setups they care to share? Does the gt4/gts setup come through both sheets of sheet metal that make up the trunk and is that suffice? Or does it require reinforcing?
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01-20-2021, 11:01 PM | #71 | |
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01-20-2021, 11:11 PM | #72 | ||
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01-21-2021, 04:18 AM | #73 | |
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01-21-2021, 04:21 AM | #74 |
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01-23-2021, 07:47 PM | #77 |
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That's not what he said in the last video? It's moderate aero won't do much on a heavy car as you need serious aero to see a benefit.
That's very different than aero doesn't benefit heavy cars.
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Bartledoo2691.50 |
01-23-2021, 07:55 PM | #78 | |
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If you also study tires, you can see that loading up the tires provide more grip up to a point, from which the rubber give up. So if you have heavy car, and you load up the tires on top of that in a high speed turn (g-forces) and on top of that add downforce, you are not necessarily going to have more grip. Now, if you have a light car, that cannot load up the tires by shir g-forces, aero will replace the weight of the heavy car and you gain traction. |
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01-23-2021, 08:01 PM | #79 | ||
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01-23-2021, 08:16 PM | #80 |
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All I can say is that my aero gained me about 2 seconds at a twisty, slightly sub-2min track. This was with the same tires, but different damper settings.
The car weighed about 3700 with me in it and a full tank. That is quite substantial in my opinion. The same downforce on a lighter car with the same power to weight (and close drag) would no doubt be more effective though.
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01-23-2021, 08:50 PM | #81 | |
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Edit Bartledoo , I was watching your video, there are no telemetry on your video, but it does not look like you are going fast enough in the turns to generate enough down force for a 3700Lbs car. Is it possible you are just a better driver over time? |
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01-23-2021, 09:49 PM | #83 | ||
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01-23-2021, 10:14 PM | #84 | |||
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I am over simplifying, but an average E92 M3 @ 3700 Lbs is not dropping 2sec a laptop doing 40-80 mph i turns because of large wing attached to the trunk. But what do I know, i ran 19" rims. |
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01-23-2021, 10:27 PM | #85 | ||||
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The 19s are great, it's the emphasis on cheap mismatched tire compounds on $20k front brakes that warrants a chuckle
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01-23-2021, 10:34 PM | #86 |
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Regardless of the actual science behind this. For the non pro driver aero makes the car easier to drive faster. Basically it’s more stable at higher cornering speeds. So while a stupid wing on the trunk doesn’t seem like it should do much it can actually add seconds to a non pro driver. It’s totally plausible it could add 2-3 seconds a lap.
If you did the same testing with a pro driver who can bang out laps .1 to .2 seconds apart you’ll likely see a marginal difference....
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01-24-2021, 12:43 AM | #87 | |
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For reference turn 1 on the track is from 141mph to 110mph apex, then there are two other 115-120mph runs with big braking zones, a 100+mph downhill right turn into a big braking zone, a 115mph crest turn, etc. I'm also not using a baby wing, and have a 5" splitter with medium tunnels.
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E90M 6MT Slicktop Single Humper in need of a diet
Last edited by Bartledoo; 01-24-2021 at 02:32 AM.. |
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01-24-2021, 04:32 AM | #88 | ||
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I couldn't tell from your video |
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