Post your DIY aero pics
03-09-2012, 08:47 AM
#22
It's hard to compare the aero of an F1 car to that of a diy miata setup. Totally different ball game. But to answer you question I'm talking about a different type of deflection.
The goal with the front wing deflection on the red bull was to get the front wing element closer to the ground which would produce more downforce. The mounting of the wing however was not designed to deflect. If it was, then the downforce produced would be wasted and not translated into increased vertical load on the tires.
This article actually explains it quite well.
http://scarbsf1.wordpress.com/2010/0...ls-front-wing/
So yes, deflection of the actual aerodynamic device can be used to your advantage, but if your goal is more vertical load on the tires, then the force it's generating has to be translated to the wheels effectively.
If your splitter makes actual downforce and that downforce is only used to bend your bumper, then it's really not helping you at all is it?
The goal with the front wing deflection on the red bull was to get the front wing element closer to the ground which would produce more downforce. The mounting of the wing however was not designed to deflect. If it was, then the downforce produced would be wasted and not translated into increased vertical load on the tires.
This article actually explains it quite well.
http://scarbsf1.wordpress.com/2010/0...ls-front-wing/
So yes, deflection of the actual aerodynamic device can be used to your advantage, but if your goal is more vertical load on the tires, then the force it's generating has to be translated to the wheels effectively.
If your splitter makes actual downforce and that downforce is only used to bend your bumper, then it's really not helping you at all is it?
Reply
0
0
03-11-2012, 03:45 PM
#24
Elite Member
Join Date: Mar 2008
Location: Enschede, NL
Posts: 2,053
Total Cats: 12
Dollars spent: < $100
Hours spent: 4-8
How effective: betwee 2=slightly better and 3=big improvement (too little testing)
Materials used: Poplar multiplex
Size/thickness of materials: 11mm (~ .43")
Bracket location: Rear of subframe (2), droplinks from crashbar (2), steering rack (1)
Tracks tested on: Assen, NL (-1s)
Last year I had just the GTC-200 and the rear became very stable (compared to no aero). With the wing slight understeer.
Now with the splitter, car turns in sharply and the rear is more loose. Needs more testing with more AOA in the rear.
Hours spent: 4-8
How effective: betwee 2=slightly better and 3=big improvement (too little testing)
Materials used: Poplar multiplex
Size/thickness of materials: 11mm (~ .43")
Bracket location: Rear of subframe (2), droplinks from crashbar (2), steering rack (1)
Tracks tested on: Assen, NL (-1s)
Last year I had just the GTC-200 and the rear became very stable (compared to no aero). With the wing slight understeer.
Now with the splitter, car turns in sharply and the rear is more loose. Needs more testing with more AOA in the rear.
Reply
1
1
03-12-2012, 08:10 PM
#25
Junior Member
Join Date: Jun 2011
Location: Houston
Posts: 409
Total Cats: 20
Hey Emilio. I was just talking to you earlier about my wing (and how badly my lack of a hardtop will effect it). Thanks again for all the advice. This is why I need it so badly:
Dollars spent: $100
Hours spent: 15
How effective: I hesitate to say without real testing data, but enough to seriously unbalance the car. I spun at every event I've been at since putting it on. I'm finally getting my head out of my a$$ as putting a wing on to balance it out.
Materials used: Birch ply for the splitter. ABS plastic for the air dam.
Size/thickness of materials: 1/2" ply splitter (thicker than it needs to be, will use thinner material in the future), 1/4" abs airdam
Bracket location: 2 bolts @ back of subframe. 2 turnbuckles on the sides (in front of each wheel, just inside the air dam), 2 turnbuckles in front.
Tracks tested on: Jefferson Circuit @ Summit Point, Weatherly Hill Climb, Various autox's
Race/TT class built for: SCCA SSM Time Trails and Hill Climbs.
Dollars spent: $100
Hours spent: 15
How effective: I hesitate to say without real testing data, but enough to seriously unbalance the car. I spun at every event I've been at since putting it on. I'm finally getting my head out of my a$$ as putting a wing on to balance it out.
Materials used: Birch ply for the splitter. ABS plastic for the air dam.
Size/thickness of materials: 1/2" ply splitter (thicker than it needs to be, will use thinner material in the future), 1/4" abs airdam
Bracket location: 2 bolts @ back of subframe. 2 turnbuckles on the sides (in front of each wheel, just inside the air dam), 2 turnbuckles in front.
Tracks tested on: Jefferson Circuit @ Summit Point, Weatherly Hill Climb, Various autox's
Race/TT class built for: SCCA SSM Time Trails and Hill Climbs.
Last edited by Handy Man; 03-12-2012 at 08:23 PM.
Reply
1
1
03-12-2012, 08:41 PM
#26
A quick and dirty band-aid aero is a sheet of coroplast hose clamped between the roof and roll bar hoop. We tested it on a chump car in it had a bit more top end speed and back end was less loose. Also keeps the sun off you if nothing else. Maybe William or Sonny have a pic they can post.
__________________
Reply
0
0
03-13-2012, 09:31 PM
#28
Junior Member
Join Date: Aug 2008
Location: Los Angeles, CA
Posts: 90
Total Cats: 25
A quick and dirty band-aid aero is a sheet of coroplast hose clamped between the roof and roll bar hoop. We tested it on a chump car in it had a bit more top end speed and back end was less loose. Also keeps the sun off you if nothing else. Maybe William or Sonny have a pic they can post.
Reply
0
0
03-14-2012, 06:22 PM
#31
Elite Member
iTrader: (15)
Join Date: Dec 2007
Location: San Antonio, Texas
Posts: 4,847
Total Cats: 27
I paint the top side with cheap solid black wood stain. I do not bother staining the bottom most of the time since there is a good chance it will be scraped off anyway. I've had my 3/8" birch plywood splitter at one really wet event and a couple of other damp events. So far, no problems. FWIW I do not leave it out in the rain. Mostly it is in the garage between races.
Spraying it with a water sealer like Thompson's might be worthwhile.
Spraying it with a water sealer like Thompson's might be worthwhile.
Reply
0
0
