Post your DIY aero pics - Page 38 - Miata Turbo Forum -Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Race Prep Miata race-only chat. 949 Racing - Rim & tires

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 07-16-2014, 09:45 AM   #741
Supporting Vendor
iTrader: (1)
 
OGRacing's Avatar
 
Join Date: May 2014
Posts: 1,574
Total Cats: 71
Default

Quote:
Originally Posted by emilio700 View Post
We found some additional downforce by running the undertray 2-3" above the bottom of the air dam. Changed the balance of the car just by raising the undertray.
in what direction did it change the balance?
OGRacing is offline   Reply With Quote
Old 07-16-2014, 01:59 PM   #742
Moderator
iTrader: (9)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, FL
Posts: 13,401
Total Cats: 1,016
Default

Quote:
Originally Posted by OGRacing View Post
in what direction did it change the balance?
Added front downforce.
sixshooter is offline   Reply With Quote
Old 07-16-2014, 03:01 PM   #743
Supporting Vendor
Thread Starter
iTrader: (3)
 
emilio700's Avatar
 
Join Date: May 2005
Posts: 4,537
Total Cats: 840
Default

Quote:
Originally Posted by sixshooter View Post
Added front downforce.
This
emilio700 is offline   Reply With Quote
Old 07-16-2014, 03:10 PM   #744
Supporting Vendor
iTrader: (1)
 
OGRacing's Avatar
 
Join Date: May 2014
Posts: 1,574
Total Cats: 71
Default

Quote:
Originally Posted by emilio700 View Post
This
cool thanks. we need to bring crusher the the wind tunnel..
OGRacing is offline   Reply With Quote
Old 07-16-2014, 04:14 PM   #745
Supporting Vendor
Thread Starter
iTrader: (3)
 
emilio700's Avatar
 
Join Date: May 2005
Posts: 4,537
Total Cats: 840
Default

Quote:
Originally Posted by OGRacing View Post
cool thanks. we need to bring crusher the the wind tunnel..
Have to be CFD. Sold Crusher about a year ago.
emilio700 is offline   Reply With Quote
Old 07-25-2014, 03:41 PM   #746
Ian
Junior Member
iTrader: (2)
 
Join Date: Jan 2012
Posts: 156
Total Cats: 4
Default

Saw this link posted over on the s2000 forums. Great tests and data from older magazine articles:

Technical Data :: Reverie
Ian is offline   Reply With Quote
Old 08-16-2014, 10:07 AM   #747
Junior Member
iTrader: (4)
 
Join Date: Sep 2010
Location: Australia
Posts: 163
Total Cats: 10
Default

Dollars spent: $200
Hours spent: 15
How effective: TBA
Materials used: Structural Plywood, Speedway Motors Polyethelyne, Aluminium Angle, Gutter Mesh
Size/thickness of materials: 12mm Ply, 3mm Poly
Bracket location: Front crash beam and subframe mounts (behind steering rack)
Tracks tested on: TBA
Race/TT class built for: CAMS 2B Production Sports

My Crusher front - will text next weekend:



























Still have to tidy up the edges a bit.

Used OEM radiator guide and shaped up additional plastic ducting for the radiator out of the leftover Speedway plastic. Used some rubber door trim I had lying around to seal it.vim a bit concerned the gutter mesh might be a bit dense and not let enough air through for cooling, but we'll see next weekend when I test.

The fit isn't perfect but it is good enough for a good test. I learned heaps making this and could make another in a lot less time.

Dropped around 8 lbs over the old plywood and 3"x2" splitter and OEM nose / GV lip combo.

I have also cut and holed an old rear bumper I had lying around and will test that with the nose next weekend.
Attached Thumbnails
Post your DIY aero pics-684fecb7-f69d-4bb5-9222-ccaa64e18c94.jpg   Post your DIY aero pics-9a0479ee-947d-4299-9dd9-1128127024ca.jpg   Post your DIY aero pics-e4804f16-7044-473c-b4f8-e9e8d5a99ffa.jpg   Post your DIY aero pics-014026d2-1598-4953-a6b4-b1af5a0a4df7.jpg   Post your DIY aero pics-3474a2f1-d7a8-47b1-bede-200bfce4f76a.jpg  

Post your DIY aero pics-a59c0e1c-b486-459a-b28a-a4c132aecb8f.jpg   Post your DIY aero pics-8c98b39f-8fd8-4b6e-aea4-d511721c1ea9.jpg   Post your DIY aero pics-e89f747c-4d82-4ef6-9f3b-14272b5c08c7.jpg   Post your DIY aero pics-96bb69ea-70f7-420f-ba8c-daa6ba467df8.jpg   Post your DIY aero pics-01e2b433-6b37-417b-8187-fa062e19d560.jpg  

Post your DIY aero pics-033bca05-dd53-4dd9-9ba9-4f141b7fd235.jpg   Post your DIY aero pics-03bfa5ad-0af9-4e9b-9b5b-76f108547a77.jpg   Post your DIY aero pics-dbdce4f6-54af-42bf-8b19-bd93a605698a.jpg  
zossy1 is offline   Reply With Quote
Old 08-16-2014, 03:31 PM   #748
Supporting Vendor
iTrader: (3)
 
Join Date: Jul 2006
Location: San Diego
Posts: 2,570
Total Cats: 230
Default

Nice job, turned out very clean.

Quote:
Originally Posted by zossy1 View Post
a bit concerned the gutter mesh might be a bit dense and not let enough air through for cooling, but we'll see next weekend when I test.
This was my first thought when looking at it, just be sure to keep an eye on your temps.

-Ryan
ThePass is offline   Reply With Quote
Old 08-16-2014, 04:34 PM   #749
Supporting Vendor
Thread Starter
iTrader: (3)
 
emilio700's Avatar
 
Join Date: May 2005
Posts: 4,537
Total Cats: 840
Default

Quote:
Originally Posted by ThePass View Post
Nice job, turned out very clean.



This was my first thought when looking at it, just be sure to keep an eye on your temps.

-Ryan
Agreed. Too dense. There are formulas floating around the web to calc open area and approximate flow coefficient. Mcmaster sell mesh and lists open area percentage for each variant.
emilio700 is offline   Reply With Quote
Old 08-16-2014, 10:37 PM   #750
Junior Member
iTrader: (4)
 
Join Date: Sep 2010
Location: Australia
Posts: 163
Total Cats: 10
Default

McMaster isn't really an option here in Oz... But I'll source something else before next weekend. Thankfully removing the front panel is only a 5-10 minute job.
zossy1 is offline   Reply With Quote
Old 08-17-2014, 04:21 AM   #751
Elite AbsurdFlow Member
 
Laur3ns's Avatar
 
Join Date: Mar 2008
Location: Enschede, NL
Posts: 2,057
Total Cats: 11
Default

That looks very sharp indeed!
Laur3ns is offline   Reply With Quote
Old 08-17-2014, 10:38 PM   #752
Elite Member
iTrader: (5)
 
Join Date: Dec 2010
Location: Raleigh, NC
Posts: 1,968
Total Cats: 50
Default

What's the value of keeping the plastic stock air straightener? I haven't seen too many cars keeping that... Or maybe I didn't notice?
Seefo is offline   Reply With Quote
Old 08-17-2014, 10:40 PM   #753
Junior Member
iTrader: (1)
 
Join Date: Aug 2013
Posts: 224
Total Cats: 13
Default

Looks pretty good. However, the 1/2" plywood bellypan is unecessary. Mine is made from the 6mm flavor and holds up just fine. Its plenty strong for a belly pan. would probably save you an additional 7-8 lbs which in my book is alot
circuitmstr74 is offline   Reply With Quote
Old 08-18-2014, 10:22 AM   #754
Junior Member
iTrader: (4)
 
Join Date: Sep 2010
Location: Australia
Posts: 163
Total Cats: 10
Default

Quote:
Originally Posted by Seefo View Post
What's the value of keeping the plastic stock air straightener? I haven't seen too many cars keeping that... Or maybe I didn't notice?
I only kept it because it gave me something to build a radiator plenum from. There are convenient holes on the front and rear that you can fasten it to.

As for the 12mm ply, it may be a bit heavier but the survivability is also that much better. In the future, I might go with a laminated fibreglass tray but again, one decent off track plow run and I'm out of business. But you ain't gonna smash 12mm ply to easily.
zossy1 is offline   Reply With Quote
Old 08-18-2014, 10:26 AM   #755
Supporting Vendor
iTrader: (1)
 
OGRacing's Avatar
 
Join Date: May 2014
Posts: 1,574
Total Cats: 71
Default



came out looking fantastic. but rivets man, rivets! probably would have saved you $50 in hardware using rivets.
PS lighter too.
OGRacing is offline   Reply With Quote
Old 08-19-2014, 05:38 AM   #756
Junior Member
iTrader: (4)
 
Join Date: Sep 2010
Location: Australia
Posts: 163
Total Cats: 10
Default

Quote:
Originally Posted by OGRacing View Post

came out looking fantastic. but rivets man, rivets! probably would have saved you $50 in hardware using rivets.
PS lighter too.
Meh, I have heaps of m6 hardware from my karting days and it is comparatively cheap over here, unlike some other stuff.

But yeah, might have saved a few grams.
zossy1 is offline   Reply With Quote
Old 08-19-2014, 05:46 PM   #757
Supporting Vendor
iTrader: (3)
 
Join Date: Jul 2006
Location: San Diego
Posts: 2,570
Total Cats: 230
Default

big kilograms are made up up those little gram things

yes, probably nit-picking over very minor things, but I always remind myself it alllll adds up.

-Ryan
ThePass is offline   Reply With Quote
Old 09-01-2014, 04:59 PM   #758
Junior Member
 
Join Date: Dec 2012
Location: Charlotte, NC
Posts: 227
Total Cats: 14
Default

Here was my attempt at a radiator exit duct. This is the split configuration, as I will be running a cowl induction air inlet setup. It is tall enough to clear my mongo SPAL fan, and will exit through two diamond-ish shaped holes in the hood.

If it doesn't flow sufficient amounts of air, I'll be bummed, and will end up yanking it off and just leaving the holes in the hood. It should be in the negative pressure zone of the hood, I'm just concerned whether the volume will be enough. I can't make it any bigger than that, as it's as tight to the engine accessories as I can make it without fear of shredding a belt (engine is leaning back in that pic as transmission isn't in).

It is made from a very thin-walled 3/8" box tubing skeleton, and a 1/16" ABS skin that is riveted on. Seams are sealed with black silicone where necessary. Rivnuts hold it to welded tabs on the radiator end tanks.
Attached Thumbnails
Post your DIY aero pics-photo-1-2-.jpg   Post your DIY aero pics-photo-2-2-.jpg  
Supe is offline   Reply With Quote
Old 09-12-2014, 06:06 AM   #759
Newb
 
Join Date: Jun 2012
Location: Huntington Beach California
Posts: 14
Total Cats: -4
Default

I believe you are right about the negative pressure towards the front of the hood. Ive seen plenty of people with that design. Most of them have a lip around 3 of the 4 sides with the back flushed. I believe this aids in a more uniform flow above the duct to extract maximum heat. I really messed up when I did mine. I placed a naca duct in the front with the vents in the back.

DIY wind tunnel and track aero tester. Built with household supplies!

Last edited by kumar oc; 09-12-2014 at 02:57 PM.
kumar oc is offline   Reply With Quote
Old 09-19-2014, 12:29 AM   #760
Junior Member
iTrader: (2)
 
Join Date: Sep 2014
Location: PHX, Arizona
Posts: 227
Total Cats: 13
Default

I just finished reading this entire thread and I am impressed. I've been trying to get open foam running on my Linux pc but have been having issues. What other software are you guys using besides cosmos and openfoam?
humming is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
My solution for Oiltemp and Oilpressure input into Megasuirt (MS3) Zaphod MEGAsquirt 41 01-24-2016 01:25 PM
Back to Stock Part Out!! Turbo Parts, MS2 Enhanced 01-05, Suspension, and MOAR! StratoBlue1109 Miata parts for sale/trade 16 10-02-2015 10:39 AM
In need of base map for stock 1997 brandonbkd MEGAsquirt 0 09-29-2015 12:52 AM


Tags
aero, diy, splitter, spoiler, wing

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 On
Pingbacks are On
Refbacks are On



All times are GMT -4. The time now is 05:48 AM.