Anyone going over 200 mph???

[JUSTANOVA]

Originally Posted by dqhemi

There are a few. Some are more cusrory.

Best book is by Joseph Katz. Has good rules of thumb and lots of technical information.

You can also look for SAE papers....

John Buscema
XV Motorsports
www.xvmotorsports.com

Do you by chance know the name of the book?

where would I find SAE papers?

I thought at one time I saw a book by steve smith on aerodynamics but I haven't seen it since.

Here's a nice little read on the aerodynamics of a 1st gen Camaro.

http://www.yearone.com/enthusiast/r...18-21camaro.pdf

Notice how the front produces LIFT, and that's at relatively low speeds with a front spoiler. I can only imagine a brick like a '71 Chevelle would be even worse, frontal area is definitally worse. Gotta get that thing down to the ground with a rake, block of the grill, etc. if you'll ever have chance of keeping that thing on the ground at 200.

thats a pretty good little read, The car that I am going to try to get to that speed is a 72 nova, I plan on a pretty big airdam, blocking the whole grill, except for the rad. opening., probably a piece of sheet alum. dzused over the grill/headlight area for top speed runs, I want to do all the proper research before I start cutting sheetmetal etc. I was going to use flush mount door handles, cut/tuck the rear bumper into the body etc....

I also plan on running an artmorrison chassis and fully itegrated cage...etc... with that chassis I should be able to set ride heights really low and make the bottom of the car flat.

as far as aero tricks it has crossed my mind to lower the leading edge of the hood to pomote downforce and then make the part of the fender that lines up with the hood come down to match the hood. but leave the outer edge of the fender stock so it doesn't disturb the body line.

[dqhemi]

Originally Posted by JUSTANOVA

Do you by chance know the name of the book?

where would I find SAE papers?

I thought at one time I saw a book by steve smith on aerodynamics but I haven't seen it since.



thats a pretty good little read, The car that I am going to try to get to that speed is a 72 nova, I plan on a pretty big airdam, blocking the whole grill, except for the rad. opening., probably a piece of sheet alum. dzused over the grill/headlight area for top speed runs, I want to do all the proper research before I start cutting sheetmetal etc. I was going to use flush mount door handles, cut/tuck the rear bumper into the body etc....

I also plan on running an artmorrison chassis and fully itegrated cage...etc... with that chassis I should be able to set ride heights really low and make the bottom of the car flat.

as far as aero tricks it has crossed my mind to lower the leading edge of the hood to pomote downforce and then make the part of the fender that lines up with the hood come down to match the hood. but leave the outer edge of the fender stock so it doesn't disturb the body line.

Race Car Aerodynamics: designing For Speed
By Jospeh Katz
ISBN 0-8376-0142-8

SAE: www.sae.org
I wouldn't start buying papers until you have a handle on what you are looking for.

Re: the Camaro article all these cars have lots of front end lift. My Mustang in stock trim had 200 lbs of lift at 100 MPH. Also, the air dam on the Camaro may work some, but it will make lots of drag. You always want to make downforce, or in this case reduce lift, while minimizing drag. Lift itself causes drag to go up.

John Buscema
XV Motorsports
www.xvmotorsports.com

[Damn True]

More math:

http://en.wikipedia.org/wiki/Lift-induced_drag
http://en.wikipedia.org/wiki/Lift-to-drag_ratio
http://en.wikipedia.org/wiki/Automotive_aerodynamics

[JUSTANOVA]

some of you guys mentioned wind tunnel testing in previous posts, Is there any place that you could do/get wind tunnel testing done without having nascar pockets?

[Stuart Adams]

The amount of modifications and such to your car would be so expensive to get it to sustain 200 mph and be racing at the same time be somewhat safe ( nothing is safe at 200 ask Dale E's family), that it would no longer look like a chevelle.

Not a do able thing IMO. One plus would be you can pick your coffin out before you get in the car, put some wings on it because it will likely take a few short flights, no qualified frequent flier miles though.

Don't do it, period. Be safe and alive is a good thing.

[Mkelcy]

Originally Posted by Stuart Adams

One plus would be you can pick your coffin out before you get in the car, put some wings on it because it will likely take a few short flights, no qualified frequent flier miles though.

Uh, oh. Now you've done it, Stuart. Nitrorocket warned everyone he's asking for help on this quest not to tell him his car wouldn't be stable at 200mph.

Originally Posted by nitrorocket

I DO NOT WANT TO SEE ONE MORE REPLY SAYING I DO NOT HAVE ENOUGH POWER OR THAT I WILL BE FLIPPING!

If I didn't know better, I'd think Nitrorocket was channelling Andy Kaufman doing a car "comedy" bit in this thread.

[Steve Chryssos]

Originally Posted by JUSTANOVA

some of you guys mentioned wind tunnel testing in previous posts, Is there any place that you could do/get wind tunnel testing done without having nascar pockets?

AeroDyn built a 2nd wind tunnel to keep up with demand. A1 was running a full 24/7 schedule, so they built A2 and discounted the rates since they doubt it will be possible to fill the schedule.

http://www.a2wt.com/info.html

[USAZR1]

Man,I find myself shaking my head in agreement with some of you. My modified 90 ZR-1 was dead-stable at 155mph,started to feel tail-end light at a little over 165,and was starting to make me very nervous at 175.

[Stuart Adams]

Just trying to lighten it up some. Nitro, I think your goals and such are great, but honestly why put your life in jeopardy by trying to make some basic mods and race at 200 mph. Honestly I don't want to sound like a smart ass comedian, but really you need to consult some specialists in the arena your trying to race in.

It's not just basic numbers, IMO. It's much more involved than that. Going down a straight away at 200mph, and then shutting it down immediately is MUCH different than racing at 200mph. Good luck and be cool.

[nitrorocket]

Here we go again, some good info, and some stupid stuff.

How have I lost respect of anyone??? By saying I want to try to hit about 200 mph and that I have the power to do it so tell me what stuff people are doing to be stable at these speeds???

THIS IS WHAT I HAVE BEEN SAYING THE WHOLE TIME!!!!!!

I have to KEEP mentioning my 1000 hp not to brag, but have you seen all the replys saying I dont have enough power!, I am simply stating I do, so don't keep talking about it and doubting 1000 hp could hit 200 mph. Talk about things I need to know about handling! Handling is the issue, not my power but people kept going on it. What was I supposed to say??

I have also been listining to everything people are saying and have gotton a ton of good ideas going through my head now, but every other post is how it can't be done, or picking on me, what the hell is the deal here!

I asked what people are doing to hit these speeds, maybe I can only hit 175 mph with good stability, but at least that is something, right??

I have been checking at all the trans places I can find to see if the 4th gear on a 4l80 can handle full power and live, Hipster said no, but a few other places are getting back to me. Looks like a Gearvendors unit might be the only choice?? That would suck because I really want one of those super trick paddle shift steering wheels!!