All Things Mk5 > Performance Modifications
Improving aerodynamics with aftermarket parts
Tamiyoman:
--- Quote from: RedRobin on September 18, 2012, 05:50:36 pm ---^^^^
I don't know why I'm thanking you, Miles! (I hope it is Miles and not Myles)
I don't want to spend £282 on a small bit of carbon just for styling.
--- End quote ---
Same goes, If I wont spend money on brakes I am not likely to be spending money on a wing tip :signLOL:
It is Myles btw :grin: :grin:
RedRobin:
--- Quote from: Tamiyoman on September 19, 2012, 10:16:23 am ---
It is Myles btw :grin: :grin:
--- End quote ---
....I can remember that: It's Myles as in Tamiyoman :happy2:
fuscobal:
Ok, my wing is here and I sent it for custom mounting it on the car. Follow up on my thread in a few minutes !
the bruce:
--- Quote from: fuscobal on October 20, 2012, 06:21:00 pm ---Time for some updates. Took the car from my mechanic abouth 1 month ago and it's working fine, except for the same rough idle who seems to never go away. There's some sort of a cyclic noise at idle and don't know why but while on the road the car behaves normally. Didn't have the change to WOT it yet but will do it after installing the wing....wich reminds me of the second update :)
The custom Reverie wing came and it's very well manufactured. After talking to Reverie guys, they advised me to go for the smaller 150mm profile instead of the 225mm one. They said it should be enough for a FWD car and that a larger one would ruin the balance of the car unless I also have a large splitter in front. The wing was made with a span of 1300mm and a 515mm distance between the drop tabs. After speaking to the guy designing the mounts, he said we can't use the car's hinges of the trunk lid so I've distanced the tabs 50mm from the hinges on each side. Didn't weigh the wing yet but it seems to be about 7-800grams only !!!
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By interpolating between 1245 si 1400mm, at an AOA of 10deg, we get about 43kg@100mph. From an older post over here, the wind tunnel says the OEM GTI has -2kg on front si -37kg on rear @ 200kmh. Those values mean the car has lift at high speeds(but then again most street car have lift). Knowing I'm lowered about 1'' and I have the VWR front air-dam, the real values on my car might be a little better, say +5kg on front and -30kg on rear. In order to compare the downforce brought by the wing and the values we have for the OEM car, we need to calculate the wing's value @ 200kmh. 43kg*(200kmh2/160kmh^2)^ = 67kg . So, at 200kmh, the car should have about 0 to 5kg of downforce on front and 30-35kg on rear (67-30 = 37 but I'm considering less because the wing's data has been acquired under freestream and not disturbed air like on the car) !
PS : For those wanting to compare the downforce level of a track-prepped street car and an F1 car, at 200kmh I would have about 1450kg and 40kg of downforce (2.8% of the car's mass) and a formula 1 car would have about 700kg and 1400kg of downforce (200% of the car's mass !!!). I think it's easy to understand how an F1 car can generate such tremendous downforce levels, knowing that the downforce does not generate inertia !
--- End quote ---
:happy2: :happy2:
Can't resist to add that to this topic. :wink:
the bruce:
interesting find:
http://www.summit-racing.eu/homepage/center-cooling-panel-diffuser-vw-golf-vi-11.html
We already know this:
http://www.nengun.com/garage-vary/vw-golf
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