Subject: Re: Aeromods for HIGH Speed by Aboatguy on 2013/3/31 20:27:47
Quote:
bogus wrote: Well... this is a good question.
Aero mods are not really designed to make you go faster, they are designed to make you stick to the road better... which increases cornering speeds and stability.
And F1 car so much downforce, that the drag is killer! The act of letting off the gas has the effect of 1g worth of braking.
If you want faster, then you need to think about drag removal... Lowering the front end, deeper front air deflectoers, some kind of REAL rear diffuser, a real rear wing that will push the car down in the back.
You will also have to get rid of the air in the front. A high rise hood will help with that.
And if done wrong, you will slow down...
Aero control is as much about moving air, but where you want to move the air too.
Having listened to a lot of Doug Fehan's presentations over the years, they get aero advantage when they can improve cornering speed and such...
There are some good books are aero considerations... I will check my library for titles.
Bogus,
I figured out the benefits of dropping the car years ago. My car has been LOW for about 8 years, and the drops were performed after miles of high speed driving back when I was stationed in Colorado. Dropping the car and messing with the rake until the car was stable at speed.
I also removed all of the rubber bushings early in my ownership (ordered an energy suspension polygraphite kit the first month of owner ship) AI heads within the first 4 months.... (3 sets of AI heads ago I should have went big first time around LOL)
Quote:
BillH wrote: For high speed Mike?
First I have to ask (no offense), How often do you plan to go over 130?
Kudos for wanting to improve your car but the areo stuff doesn't work without doing the whole package. I.E.. putting an air dam or spoiler on the front will reduce the air going under the car but it will also increase drag, And putting just the spoiler on will have the affect on the rear of taking weight off (stability loss).
Are you looking for faster MPH at a given RPM or are you looking for stability at higher speeds?
If it's stability, work on the suspension, you'll get way more bang for the buck.
The areo stuff that's out there isn't going to do much, doubtful that you'll even be able to notice the difference.
An example would be my 92, soft,base suspension with KYB's. I run 125 on the straights, tap the brake and turn into S-bends at 110-115. The car floats a lot, a lot. Areo mods won't help that at all, suspension mods will.
Bill,
I frequently find myself over 155 mph.... and rarely over 170. I'd like to change the later. My car is stable and rides nice at speed. However, drag is a major factor at 160+ and IMHO reducing drag may have bigger effect on top-speed than another 50-100 horsepower. I'm looking for drag reduction, while not making the car unstreetable.
So what I'm looking for is drag reduction
That wont increase lift and will allow the car to continue to be my daily driver.
It may be that I'm maxed out on DD driven well mannered C4 performance and it may be time to move on. I sure hope that's not the case
