MK5 Golf GTI
General => Random Chat => Topic started by: Poverty on August 29, 2010, 02:21:40 pm
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Interesting results with front and rear downforces (or lift)
BMW X6 M
frontal surface area (A) 2.85m²
cw (cd) 0.38
airdragindex (cd x A) 1.07
at 200km/h (125mph)
lift front axle 69kg
lift rear axle 48kg
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fimg3.sportauto-online.de%2FBMW-X6-M-r498x333-C-6c5d6f48-279843.jpg&hash=b09cd88cd3b3560d38a8b3a1b33134f39fad33e9)
Audi R8 V10 5.2
(A) 2.024m²
(cd) 0.36
(cd x A) 0.72
at 200km/h
lift front 23kg
downforce rear 3kg
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fimg2.sportauto-online.de%2FAudi-R8-5-2-FSI-quattro-R-tronic-r498x333-C-19767f26-260889.jpg&hash=79eafdf5f380ec864dbc913fc2526f780723484c)
Mercedes SL 65 AMG Black Series
(A) 2.17 m²
(cd) 0.37
(cd × A) 0.80
at 200km/h
lift front 56kg
downforce rear 22kg
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fimg2.sportauto-online.de%2FMercedes-SL-65-AMG-Black-Series-r498x333-C-a532a16a-242538.jpg&hash=b8dfa3944adace32bfbcbde207b9d5b76f9600ce)
Corvette ZR1
(A) 2.059 m²
(cd) 0.32
(cd × A) 0.66
at 200km/h
lift front 39kg
lift rear 14kg
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fimg3.sportauto-online.de%2FCorvette-ZR1-r498x333-C-fc1d26b9-267910.jpg&hash=2f04ec5f6ccdde7aa3c69b6986c32148e54ea18a)
Mini Cooper S John Cooper Works
(A) 2.05 m²
(cd) 0.36
(cd × A) 0.73
at 200km/h
lift front 17kg
lift rear 20kg
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fimg2.sportauto-online.de%2FMini-Cooper-S-JCW-r498x333-C-5b12a388-232969.jpg&hash=1a41536db965809b6ca23a0d243e9045808fc2ce)
Ford Focus RS
(A) 2,35 m²
(cd) 0,36
(cd × A) 0,86
at 200km/h
downforce front 8kg
lift rear 4kg
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fimg4.sportauto-online.de%2FFord-Focus-RS-r498x333-C-7fed744e-255719.jpg&hash=f45f11295c099f9e58bdc389777edcbfbe6946ac)
Nissan GT-R
(A) 2,30 m²
(cd) 0,31
(cd × A) 0,71
at 200km/h
lift front 3kg
downforce rear 8kg
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fimg3.sportauto-online.de%2FNissan-GT-R-r498x333-C-f77e4081-250214.jpg&hash=da814b98316029d9a2cc921be62c948476e252e8)
Porsche GT3 facelift
(A) 2.04 m²
(cd) 0.32
(cd × A) 0.66
at 200km/h
downforce front 15kg
downforce rear 19kg
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fimg4.sportauto-online.de%2Fr498x333-C-360f7d28-245985.jpg&hash=cdf2f23a805c3591ac8c48a5908d962dd079fcc7)
Audi TT-S
(A) 2.10 m²
(cd) 0.32
(cd × A) 0.68
at 200km/h
lift front 42kg
lift rear 17kg
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fimg1.sportauto-online.de%2Fr498x333-C-42b32ab4-162580.jpg&hash=eea6981b7d6437eab1074e76b22c7bec9f6fb662)
Lamborghini Gallardo LP 560-4
(A) 1.93 m²
(cd) 0.35
(cd × A) 0.67
at 200km/h
downforce front 4kg
lift rear 37kg
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fimg3.sportauto-online.de%2Fr498x333-C-6235d850-164900.jpg&hash=8d72b91873954cddf6fc4711c2e68aceb93c2bfd)
Mercedes C 63 AMG
(A): 2.18 m²
(cd): 0.32
(cd × A): 0.69
at 200km/h
lift front 35kg
lift rear 42kg
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fimg3.sportauto-online.de%2Fr498x333-C-b34909bf-161808.jpg&hash=cb8f998439301904b882a3e10ff4f4346d2d65b0)
Lotus Exige S
(A): 1.62 m²
(cd): 0.44
(cd × A): 0.71
at 200km/h
downforce front 5kg
downforce rear 24kg
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fimg3.sportauto-online.de%2Fr498x333-C-b4781354-170963.jpg&hash=3a5fe83b728947e304b2e5847c3793f439afd9ed)
Audi S5
(A): 2.18 m²
(cd): 0.31
(cd × A): 0.67
at 200km/h
lift front 52kg
lift rear 34kg
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fimg3.sportauto-online.de%2Fr498x333-C-b89c299e-191026.jpg&hash=fd5b6470322da7734263855e4ea80c870fb6d70b)
Lamborghini Murcielago LP 640
(A): 2.04 m²
(cd): 0.35
(cd × A): 0.71
at 200km/h
downforce front 30kg
downforce rear 11kg
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fimg4.sportauto-online.de%2FLamborgini-Murcielago-LP-640-06-r498x333-C-c397e9ab-191384.jpg&hash=49897e875549b9fae732094b923aec53a19c1d1a)
Gumpert Apollo Sport
(A): 1,99 m²
(cd): 0,57
(cd × A): 1,14
downforce front 20kg
downforce rear 176kg
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fimg3.sportauto-online.de%2FGumpert-Apollo-Sport-r498x333-C-66079f55-279758.jpg&hash=4461402ad7d3d271e013f078ebfbbcc575e8049b)
Honda NSX-R (2002)
(A): 1.7800 m²
(cd): 0.34
(cd × A): 0.60
at 200km/h
downforce front 32kg
downforce rear 5kg
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fimg2.sportauto-online.de%2Fr498x333-C-999359d1-165539.jpg&hash=e0774927801f9602e4a432ca91508166bd2791e0)
Porsche Carrera GT
(A): 1.95 m²
(cd): 0.37
(cd × A): 0.72
at 200km/h
downforce front 49kg
downforce rear 40g
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fimg3.sportauto-online.de%2FPorsche-Carrera-GT-im-Supertest-r498x333-C-f1e6a258-238806.jpg&hash=43f8225724b4f7846a3f8479aa9626e8971f0064)
Mitubishi Evo VII
(A): 2.12 m²
(cd): 0.37
(cd × A): 0.79
at 200km/h
downforce front 37kg
downforce rear 8kg
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fimg3.sportauto-online.de%2Fr498x333-C-b33bceca-187021.jpg&hash=491e70f591b621d66ca30c5937dbd3b42d9b79f9)
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TTRS
Cw 0,32
36 kg uplift at the front
2 kg uplift at the rear axle.
(https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fimg30.imageshack.us%2Fimg30%2F5126%2Ftt1ur.jpg&hash=a57fb8405a795be84cebb3f6c2b00e7d8a2405b6)
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gumpert appollo 176kg downforce :notworthy:
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So if it has lift, then it has no downforce?! :confused:
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Lift is the opposite of downforce and very bad for grip so the car will go up instead of pushing to the ground !
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It's why cars feel floaty at high speed, but downforce is also drag slowing you down.
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Not necesarilly, Tony. Generally wings increase drag while underbody parts can decrease drag while also increasing downforce !