240z aero analysis and testing - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


General Miata Chat A place to talk about anything Miata

Reply
 
 
 
LinkBack Thread Tools
Old 12-31-2009, 07:53 PM   #1
Elite Member
Thread Starter
iTrader: (13)
 
Join Date: Nov 2006
Location: Tigard, Oregon
Posts: 3,908
Total Cats: 0
Default 240z aero analysis and testing

Spotted this in a thread at CR. Guys did a bunch of aero work and testing on some 240z's. Not directly applicable obviously but some of the results were interesting. It's a couple years old and may be a repost but here's the thread...

Windtunnel Test Data - HybridZ

On the testing data chart the most startling test results were with the blue car with hood and fender vents. Blocking off the vents resulted in 100lbs more front end lift and another 8hp to maintain 120mph. The vents aren't huge but really improve air flow at high speeds by not trapping air in the engine compartment. That car needs a lot more rear wing to balance out the splitter in front.

Name:  TestDataPage219-28.jpg
Views: 15
Size:  162.4 KB

Anyway. All you SoCal track rats need to find a tunnel, get together and do some of this same testing on the Miata!
cueball1 is offline   Reply With Quote
Old 12-31-2009, 07:57 PM   #2
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,370
Total Cats: 1,332
Default

I've spent the morning looking for wind tunnels. In for group buy.
Savington is offline   Reply With Quote
Old 12-31-2009, 09:24 PM   #3
Senior Member
iTrader: (1)
 
Join Date: May 2008
Location: south texas
Posts: 1,419
Total Cats: 9
Default

a lot cheaper alternative would be to use a scaled down version of a wind tunnel with a good model maker to build the car and some optional equipment to test out. hoods, wings and such. it sounds funny but i bet it would be cheaper than a real wind tunnel and hourly rate. the mini wind tunnels (like most real ones) are used to test new aviation designs for small planes, exec. jets and experimentals. although if this guy tested an old 240sx, maybe it's doable now. where did this guy go? how much did it cost?
spoolin2bars is offline   Reply With Quote
Old 12-31-2009, 10:09 PM   #4
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,370
Total Cats: 1,332
Default

Quote:
Originally Posted by spoolin2bars View Post
a lot cheaper alternative would be to use a scaled down version of a wind tunnel with a good model maker to build the car and some optional equipment to test out. hoods, wings and such. it sounds funny but i bet it would be cheaper than a real wind tunnel and hourly rate.
You get what you pay for, though. The interaction between the roofline and wings on our cars is quite complex - the entire goal of a wind tunnel is to get real life data. If computer modeling were accurate enough, wind tunnels wouldn't exist - but NASCAR uses them, aviation uses them, etc.
Savington is offline   Reply With Quote
Old 01-01-2010, 01:26 AM   #5
Elite Member
Thread Starter
iTrader: (13)
 
Join Date: Nov 2006
Location: Tigard, Oregon
Posts: 3,908
Total Cats: 0
Default

Quote:
Originally Posted by Savington View Post
You get what you pay for, though. The interaction between the roofline and wings on our cars is quite complex - the entire goal of a wind tunnel is to get real life data. If computer modeling were accurate enough, wind tunnels wouldn't exist - but NASCAR uses them, aviation uses them, etc.

Better yet, I don't know if they exist, would be a wind tunnel with a rolling road. That way the interaction of turbulence from spinning wheels in the wheel well could be calculated also.
cueball1 is offline   Reply With Quote
Old 01-01-2010, 05:26 AM   #6
Senior Member
iTrader: (1)
 
Join Date: May 2008
Location: south texas
Posts: 1,419
Total Cats: 9
Default

would rather do real car testing but i'm afraid to find out what the cost would be. although, after seeing those old *** 240's in there, it doesn't seem like it could have been too crazy expensive. i know there's alot of wind tunnels on the east coast because of nascar teams and stuff. check this bad **** evo out.

YouTube - CYBER EVO - TSUKUBA TIME ATTACK 2008 - (1 OF 2)
spoolin2bars is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
3rd Time's a Charm...hopefully. zephyrusaurai Meet and Greet 2 09-28-2015 11:59 PM
Are my coils failing? viriiguy General Miata Chat 5 09-28-2015 08:39 PM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 12:12 PM.