Goodbye Kansas

[ERA2076]

One other thing - we are not trying to run 200 - we need to run 155 - that is all.

[ERA2076]

We are looking at he top of the cooler and it's shroud. Notice where the fins start on the radiator.



There is nothing to be gained by trying to cool the radiator support and it only increases the angle which is not what we want. The lower chamber cannot be clean. All we can do is try to minimize the angles as much as possible as well as minimize the volume.

Here is the floor for the lower chamber. It mounts above the rad support closing that region as a dead air space. The angle is to steep for the air to stay attached.



This is a riser which we do not plan to use, but I hope you can see where we are headed. A roof goes on top of the riser angled down at 8 degrees towards the radiator. I want to use the 8 degrees to reduce the volume of the lower tract trusting the air will stay attached in the larger tract. The lower tract feeds seven rows of rad tubes.



Feed clean straight air thru the rad and not have high pressure turbulent air packing and trying to lift the front of the car.

The additional duct panels weigh .9 lb.

[ERA2076]

Exactly what I am talking about

[ERA Chas]

Originally Posted by ERA2076

One other thing - we are not trying to run 200 - we need to run 155 - that is all.

I ran 155 with zero aero and wide open cockpit but with 550HP. You can easily do it near 500 I'm sure. But it was on glare ice up there and my six-hole was clamped shut.
Couple of things:
I think Webers on your 8.2 deck is good with no scoop. O'course, you wanna think about getting cold air to them...
Couple guys on here with FIA's run Webs and I think Allen's beautiful green car with LeMans roof has no scoop. Try a search.
I really think at this stage, you have to get with Morris Clement on here about aero and downforce. With an Indycar background, Morris built what I consider the ultimate Kirkham track car. Very big speed at very big tracks. His highly detailed build was posted years back on Gasholes (dunno about here) but I forget his chassis number. Maybe start a 'Hey Morris!' thread to get his attention.
He has the experience to confirm or bust your theories and prolly save you a lot of blind-alley work. His path went to 18" wheels, serious but-not-ugly roll protection, gargantuan brakes, 700 or so HP, diff cooler, belly pans and ultra-trick everything.
You can benefit if he has the time to cooperate. I'm just a crazed street rat that managed to not kill myself on street or track. (Bless you Skip Barber).

[ERA2076]

1) I am an amateur

2) Since I don't purchase from them, I am not comfortable asking builders outside of Bob and ERA.

I have read a lot of Morris work on CC. A great contributor.

Sure would be interesting to see what Bob would build, if he did not have to make money.

[ERA2076]

[Bobcat]

ERA206 ...couple of things . You might want to use the search function on a site named corner-carvers.com . They are a highly technical bunch of a$$ holes who don`t want to fool with anyone who isn`t serious . They have NASCAR engineers and other hard core manufacturers/builders who are on the site . Their wheel frequency/shock curve discussions really helped me decide what valving to use on my shocks . Helmut buffeting will also be a major factor at those speeds ... hope you have strong neck muscles .
Their search function works without having to sign in or be a member .
Charles ... at 155 , your pucker factor must have been huge . I know that my car`s front end starts getting light around 130 ! I`m seriously considering trying to adapt a Hurricane Motorsports front spoiler to mine , but am really interested in what ERA 2076 is doing ... and what you did to "stabilize " your car at that speed .
FWIW , some search engines won`t pull their site up .... I use DuckDuckgo ... they really don`t care if anyone visits them or not and won`t release any info on their site .

Bob

[ERA2076]

Bobcat - I have been a member a Corner-Carvers for a decade and have spent many, many, hours there. One is expected to study at C-C. Research at Corner-Carvers is a big motivation for building my FIA. Much of the modifications to my Mustang were learned there. C-C got me to Carrol Smith books. C-C is a very humbling place.

I'm glad you are interested in my pursuit. I knew Chas had run 155, but I also know the cars lift around 130, so Chas was flying the wing. He has much bigger balls than I. I don't like flying and avoid it when ever I can.

Especially since they implemented body cavity searches in the airports.

x-chr

[ERA2076]

The ellipses slowed my progress. Bob P was kind enough to mail me a full scale drg of the grill.

[ERA Chas]

Originally Posted by ERA2076

I'm glad you are interested in my pursuit. I knew Chas had run 155, but I also know the cars lift around 130, so Chas was flying the wing. He has much bigger balls than I. I don't like flying and avoid it when ever I can.

Actually they're standard size - it's the brain that's much smaller than it should be.
The really scary part was getting to the top-snap-shifting 2 and 3 caused the rear to touch both white lines of my lane-again-like glare ice. Very stupid to use drag strip technique. And Hoosier TD's were no help. As Cliff said, going through 130 to the top, the nose felt unconnected. I didn't breathe on the steering wheel then. Nor pounce on the brakes at the top. Was able to see 6200 on the tach.
I did drag the pedal to light the taillights-so the Z 06 could see I was kind enough to wait for him...
Much more stable at 121 in the traps at the dragstrip.
I will respectfully never believe Dick Smith ran 198 unless someone convinces me that the bowl-shaped Daytona track helps....
Cliff-really beautiful thought and work. You're raising the bar for those of us that care-thanks.

[DanEC]

Originally Posted by Bobcat

I`m seriously considering trying to adapt a Hurricane Motorsports front spoiler to mine , Bob

This may have nothing to do with anything, but having a late model Mustang GT saw a thread on the AllFordMustangs forum the other day from someone who's Roush's front spoiler was ripped off the front of his car, along with a good portion of the lower front bumper, under car shrouding and wheel well plastic at 155 mph. Some serious forces to contend with for add on aero components at those speeds.

Where some fool got his Mustang up to 155 mph on the highway I have no idea - but he's from Texas so if you live down there beware.

[Bobcat]

ERA2076 ... a few random thoughts . Way back in the day , I used to be pitted in the area where the A/P Cobras and Vettes were at some tracks . I remember seeing several 427`s with the hood opened about 1 " in the rear and was told that was to let the underhood air out . Since that area is a high pressure area if you have the windshield on , it probably was useless .... but if you ran a racing windscreen , it might have helped . Have you looked at that or found anyone who has done any aero testing on that ?
Also , Corner-carvers had a really good discussion a few months ago on splitters and it also went into belly pans , wings , diffusers etc .

Bob

BTW .... love the work you`re doing , looks fantastic !

[ERA Chas]

Originally Posted by ERA2076

1) I am an amateur

2) Since I don't purchase from them, I am not comfortable asking builders outside of Bob and ERA.

Allen is not a 'builder' or constructor if that's what you mean. Amateur just like you and me. So is Morris. They happily share info with their contributions.
You're getting into Morris' league which is why I suggested he'd be more helpful than I am.
Bob just loves kayaks...