350 and 350R suspension differences?

[mustang_lurkers]

I think the R sits slightly lower too.

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[MAV]

To keep beating this dead horse, there's also this from the Ford Source Manual: http://www.mustang6g.com/forums/showthread.php?t=28945

On page 66, the chassis specifications show "Performance front springs" for both the Track package and the Tech package, but also the 920A "base" R as well. I'm thinking the only car without the 220 springs is the base GT350.

 

[FTD]

If the R sits lower, it might need heavier front springs and shorter rear sway bar arms. It would have less suspension travel.

The order guide is the only factual document I have seen. What's confusing to me is the mention of heavy duty front springs on the Tech/Track with no further clarification; the R then states it includes all track package content to include the front springs.

I guess it's going to come down to actual part number verification or measurements.

 

[Hack]

The Ford engineer uses the word downforce an awful lot during his portion of the GT350 info video. Even talks about the splitter serving the purpose of "sucking" the car down, as you noted, plus adding downforce...

I'm probably just being a little too anal. A flat board (splitter) parallel to the ground does not produce down force. They probably have shapes in the body pan behind the splitter (under the car) that actually produce down force, and they are counting them as part of the splitter. Maybe the other shapes in the nose of the car above the splitter produce down force, I don't know. Or possibly the nose of the splitter is aimed downward, serving as a spoiler as well as a splitter, but they are still calling it a splitter anyway. I'm sure there's down force and I'm sure whatever the engineer is saying is correct.

Of course the rear wing produces down force, that makes sense.

 

[1LEThumper]

I'm probably just being a little too anal. A flat board (splitter) parallel to the ground does not produce down force. They probably have shapes in the body pan behind the splitter (under the car) that actually produce down force, and they are counting them as part of the splitter. Maybe the other shapes in the nose of the car above the splitter produce down force, I don't know. Or possibly the nose of the splitter is aimed downward, serving as a spoiler as well as a splitter, but they are still calling it a splitter anyway. I'm sure there's down force and I'm sure whatever the engineer is saying is correct.

Of course the rear wing produces down force, that makes sense.

As long as the car has a nose, yes even a flat board will produce downforce. By 'splitting' the air you create a high pressure area above the plate and that air has to move some place. So yes it will indeed make downforce. Installing this at an increased angle or increasing the length in front of the tires will also increase downforce.

Now because this car appears to also have under body aero such has tunnels you need to keep air flow under the nose of the car as well, which typically means stronger springs or packers to make sure the nose stays off the ground at high speed or they will want to porpoise.

 

[Hack]

As long as the car has a nose, yes even a flat board will produce downforce. By 'splitting' the air you create a high pressure area above the plate and that air has to move some place. So yes it will indeed make downforce. Installing this at an increased angle or increasing the length in front of the tires will also increase downforce.
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Good explanation and I had it wrong. Duh, yes of course there's a high pressure area at the nose of the car - and the splitter prevents some of that high pressure air from getting under the car. So it makes a boundary between two different pressures and creates down force.

 

[908ssp]

Your both kind of wrong. High air speed is low pressure air Bernoulli's Principle. By limiting the amount of air going under the car the speed of the air increases lowering the pressure under the car causing the car to be pushed from above into the lower pressure air below. The tunnels in the back also speed up the air under the car allowing the air in front to rush rearwards speeding up the air. Amazing how many people still don't understand how aero works. High speed air lower pressure, low speed air higher pressure.

 

[1LEThumper]

Your both kind of wrong. High air speed is low pressure air Bernoulli's Principle. By limiting the amount of air going under the car the speed of the air increases lowering the pressure under the car causing the car to be pushed from above into the lower pressure air below. The tunnels in the back also speed up the air under the car allowing the air in front to rush rearwards speeding up the air. Amazing how many people still don't understand how aero works. High speed air lower pressure, low speed air higher pressure.

Depends on the splitter. If you have a completely flat bottom car then you really do not want air under the car at all. Given this at has tunnels and a diffuser then you need the air under the car just as you stated to cause a low pressure area to aid in making even more down force for the car.

Different things are going on with this one.

 

[cjgt350]

The wing on the R is an inverse wing for instance. The look isn't everyone's cup of tea but it is very functional with downforce and low drag coefficient. It is clear Ford spent some considerable time on the aero packages for this car.

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