Marham prep with angle grinding goodness.

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Daniel
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Post by Daniel »

agreed ^ that'll do mate :D
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Stuart
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Post by Stuart »

Jon,
Surely the vertical face nearest the wheel arch will cause enormous pressure/stalling at high speed? Is that what you actually want, as I can't remember seeing that on any other car?
Looks cool in any event, and please bear in mind I know fuck all about aero :D

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Jon
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Post by Jon »

If you mean this...

Image

Then yes, that's 100% exactly what i'm after :)

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Stuart
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Post by Stuart »

Educate me Jon :) Why?

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Jon
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Post by Jon »

I believe that you've owned and driven & also quoted (many times) on the understeery qualities of Fuji heavy industries finest machinery.
To my (small) mind, Anything that causes the front end of these Jap tractors to "hunker" down is a good thing and will be/is benificial on track or fast road.
It certainly works for me :D (placebo effect or not). :smilielol5:
PS
It's very possible that the above is total bollocks :willy_nilly:

:thumbs:

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A2ON
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Post by A2ON »

I think that may not aid you in trying to get the front end to come down . see here .

Splitters

Image What is a splitter:
A splitter (a.k.a. "front splitter") is typically found on the front-end of a race car, appearing as a flat extension to the very bottom of the front bumper. This splitter extends straight out, parallel to the ground, and can be made of carbon fiber or other stiff material. It is attached to the bottom of the front bumper, and may also be supported by two or more support rods at some distance forward of the bumper mounting points. These support rods ensure that the splitter stays parallel to the ground, even when there are outside forces around the splitter.
What is an air dam:
Image An air dam (a.k.a. "front air dam") is usually a shaped part of the lower portion of the front bumper. It is sometimes called a "front lip" or "lip spoiler." It can be molded as part of the front bumper, or it can be a separate part that is attached at the front-lower portion of the front bumper. Unlike the splitter, the lip is not a flat "sheet" of material.
Besides looking cool, the splitter and air dam serve the following functions:
&nbsp &nbsp 1. To reduce lift.
&nbsp &nbsp 2. To help guide air to a useful location (i.e. radiator).

What goes on at the front-end of a car:
Image When a car travels at high speeds, the air pressure in front of the car can become very high. All this air ends up going both above the car (over the hood), and below the car (under the front bumper). When too much of this air gets under the front bumper, the under-car air pressure builds up. This increased air pressure contributes to lift, which causes the front-end of the car to lighten up, thereby reducing the amount of traction at the front of the car. This high pressure (and lower speed) air, when compared to the air speed above the car, will create situation where there is increased lift over the entire car. Typically, most production street cars, when traveling at higher speeds (60mph+) produce large amounts of positive lift.
How the front splitter and front air dam work:
What we want to have is lower pressure, faster-moving air below the car, and higher pressure, slower moving air above the car. The lower pressure side, when it happends to be under the car, contributes to reduced lift. When the lift is reduced sufficiently to the point where there is negative lift, then there is net positive downforce.
Image The splitter (or air dam) itself does not actually create downforce. What the splitter does is that it increases the area over which high pressure can build up. The more high pressure there is above the splitter, the greater the net downforce there is. Additionally, if there are openings in the front bumper (above the splitter or lip) for brake ducts or radiator cooling, this increased air pressure will encourage more air to flow into these openings.
When are splitters and air dams effective:
Splitters (and air dams) are effective when they are mounted close to ground level, and when they extend beyond the bottom of the front bumper. This maximizes the pressure area above the splitter, and maximizes the pressure differential between the top and bottom sides of the splitter.
When the splitter is mounted very close to ground level, considerations should be made to ensure that:
&nbsp &nbsp 1. There is sufficient airflow to the engine bay and driveline components.
&nbsp &nbsp 2. There is sufficient ground clearance for the available suspension travel.
&nbsp &nbsp 3. The rear diffuser (if installed), still gets the fast-moving, low pressure air it needs in order to function properly.

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Stuart
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Post by Stuart »

Jon
Great reply :)

Arron
Great copy and paste ;)

I guess the thing I was asking about (and not explaining myself very well clearly) was whether that design contributed to it getting torn off at high speed. If it had some kind of canard style thing from the splitter tray up to the top of the arch extension kind of thing, it may help.

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blacky
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Post by blacky »

Yup, you really need a canard/canards (dive planes) rather than a vertical face, all that is doing is creating drag (more drag than a boxy car has already!)

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A2ON
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Post by A2ON »

stuart wrote:Jon
Great reply :)

Arron
Great copy and paste
;)

I guess the thing I was asking about (and not explaining myself very well clearly) was whether that design contributed to it getting torn off at high speed. If it had some kind of canard style thing from the splitter tray up to the top of the arch extension kind of thing, it may help.

I am living proof of limited knowledge being a dangerous thing. Ignore me :)
blacky wrote:Yup, you really need a canard/canards (dive planes) rather than a vertical face, all that is doing is creating drag (more drag than a boxy car has already!)
This was my point as said above using the copied link.Once thats gone it will/should work like a charm.

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Jon
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Post by Jon »

Arron
Thanks for the above post, I hadn

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