The Birth of Brandi's Twins [COTW 8/8/11]

[stevieturbo]

One thing I've refused to do in all my top speed runs...is start taping things up, removing mirrors etc etc.

And it's hilarious when my 35 year brick shaped junker still blows away most of the modern aerodynamic cars with all their bits taped up, wipers, mirrors etc removed LOL

IMO I will always run the car in pretty much exactly the same state as it is driven to the event, with maybe just a tyre change.

Can the tape really make a difference ?

Presumably that front splitter can go much lower ?

[SSE 4 2SS]

Originally Posted by stevieturbo

One thing I've refused to do in all my top speed runs...is start taping things up, removing mirrors etc etc.

And it's hilarious when my 35 year brick shaped junker still blows away most of the modern aerodynamic cars with all their bits taped up, wipers, mirrors etc removed LOL

IMO I will always run the car in pretty much exactly the same state as it is driven to the event, with maybe just a tyre change.

Can the tape really make a difference ?

Presumably that front splitter can go much lower ?

The tape does several things. It hds the formed plastic pieces in front of the headlights. The primary purpose is to keep the front fascia top piece from breaking off at speed as has happened even on the drag strip at much lower speeds than I'll be running. It keeps it from "shark jawing".

We have seen seven to ten mph differences by removing the mirrors and taping the front end.

Another major item and probably a bigger concern is keeping air
Out from under the hood and the car. By limiting the air entering the engine bay other than that needed for the intercooler, radiator and oil cooler, we allow for more stability and limit the air that hits the billboard we call a firewall. We could leave the body work stock in its entirety and make a legitimate claim of street car, but in reality while I can drive my car on the street is is way more of a race Car than a street car.

As for the splitter, yes it will be lowered substantially, I drew it up to get the car on and off the trailer. It's will be lowered to level or just below level for the first pass. I built the strut rods and allowed for almost 2.5 to 3 inches of adjustable travel if needed.

We are also taking a big pro-comp style spoiler I built for another car and we will run it in test situations. For now it's seat of the pants testing. In the near future we will be installing a Motec Dash that will allow for the use of ride height sensors we will install for data logging the down force from different settings and adjustments. The spoiler I Built has a fully adjustable blade and a 1/4 inch wicker bill. We will have access to some photos and video that will help us make necessary adjustments .

I do agree that the tape isnt attractive but I do feel at "hopefully" well in excess of 200 mph Ill take the protection for the car and stability for my backside. I do not want to get airborne.

[stevieturbo]

Can the ProEFI not record suspension height ?

When I had the kevlar hood, it got into all sorts of silly shapes at speed ! After it went airborne last year ( just on the road at speed ) I just stuck the old steel one back on.

The difficult bit is the testing, it's not very practical to do 200mph often to test any aero bits and pieces

[SSE 4 2SS]

Originally Posted by stevieturbo

Can the ProEFI not record suspension height ?

When I had the kevlar hood, it got into all sorts of silly shapes at speed ! After it went airborne last year ( just on the road at speed ) I just stuck the old steel one back on.

The difficult bit is the testing, it's not very practical to do 200mph often to test any aero bits and pieces

ProEFI isn't set up to record ride height.

I agree on the testing of aero bits outside of a wind tunnel but we will make back to back passes at identical settings and see how things feel. We can data log the traction control and determine if we are creating too much downforce or too little relative the lip spoiler from the factory. If we can't tell any useful information the we will stick with the lip spoiler and find out what the pre-existing ground effects items we've done are capable of.

I do have the carbon fibre hood and some hell for stout hood pins. The factory hood will not fit on the car due to the Intake manifold we built.

[stevieturbo]

I got this recently, although again it does come back to the testing, testing and more testing

http://www.amazon.co.uk/gp/product/1...ilpage_o04_s00

But as they're readily available used, you can use modern car headlamp level sensors to monitor ride height to give an indication of whether downforce is being created...or lift.

And a very brief but crude article from the author via their online magazine on same topic. Usually the key with the online articles is doing everything on a tight budget, hence no big fancy spoilers etc.

http://www.autospeed.com/cms/article.html?&A=113225

[SSE 4 2SS]

Originally Posted by stevieturbo

I got this recently, although again it does come back to the testing, testing and more testing

http://www.amazon.co.uk/gp/product/1...ilpage_o04_s00

But as they're readily available used, you can use modern car headlamp level sensors to monitor ride height to give an indication of whether downforce is being created...or lift.

And a very brief but crude article from the author via their online magazine on same topic. Usually the key with the online articles is doing everything on a tight budget, hence no big fancy spoilers etc.

http://www.autospeed.com/cms/article.html?&A=113225

Great info... Thanks and I'll be looking into some of this stuff...

[Mr Twisty]

I bet that was insane!

[SSE 4 2SS]

So, we got in two runs Friday evening. The first one there was a computer gremlin and the car would not make power. Shut it down early and returned to the pits to have Corey check it out. We re flashed the ECU and did a throttle position relearn.

Back to the start grid, but it's dark... Hmmm, they set up some lights and off we went.

In the video below I went 199.9 mph in the dark. It was interesting to say the least.

https://www.facebook.com/TheTexasMil...3302528258165/

[SSE 4 2SS]

I'll post more later, gotta shower for dinner with the inlaws...

[stevieturbo]

Sounds like a good first outing. Can't say I'd be thrilled about doing that speed in the dark though ! lol

Although maybe it masks the sensation of speed even further ?

[SSE 4 2SS]

Originally Posted by stevieturbo

Sounds like a good first outing. Can't say I'd be thrilled about doing that speed in the dark though ! lol

Although maybe it masks the sensation of speed even further ?

I actually felt it enhanced the feel of speed since it was physically impossible to concentrate or focus on anything... By the time you could see something it was gone... Quite weird actually...

[CamaroSkooter]

Originally Posted by SSE 4 2SS

I figured we could turn off the lights since they are blocked anyway... And see what happens... And for what's worth the tape doesn't look that bad in person.. It looks like crap in this picture...

This is the before photo...

...before holes were cut in the tape to be able to run that one night pass...

...before it rained and water got into said holes to dampen and loosen the tape...

...before you ran on Friday and some of the loosened tape blew off the car at 190+ mph...

[BaylorCamaro]

congratulations on the clean runs this weekend. Out of curiosity, what is the Camaro and or 5th gen record?

[SSE 4 2SS]

Originally Posted by BaylorCamaro

congratulations on the clean runs this weekend. Out of curiosity, what is the Camaro and or 5th gen record?

The current record for a 5th Gen is 225.2. Snappy Racing holds that one. Michael Keisling broke the three year of record held by MTI out of Atlanta of 204.x they set that in 2010. Snappy Racing has held the record for three years and has pushed it through various speeds up to the current 225.2.

As for Camaros, the record is held by Bise Racing, Kelly Bise in the 2000 year model SS with a speed of 263.2 mph. Unfortunately that car was destroyed 2 years ago in a nasty wreck at the mile. The driver was fine after a trip to the hospital via chopper.