Post your DIY aero pics
02-06-2014, 01:23 PM
#663
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I believe (and correct me if I'm wrong) that the cavity created by the device contains the vortices which allow the air flowing around the trailer to converge in a smoother way thus reducing drag. I think the Mythbusters episode about pickup truck MPGs in relation to the tailgate being up or down is about a similar effect.
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02-06-2014, 03:29 PM
#664
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03-08-2014, 01:35 PM
#666
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Join Date: Dec 2012
Location: Charlotte, NC
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Thoughts on front splitter, vs. front wing, vs. large front canards/winglets e.g. Nemo Evo, for a hill climb/TT application?
Concerns:
-Front Splitter: Ground clearance, length of fiberglass nose/short frame rails will require a lot of extra weight/bracing to adequately support it. Previous front splitter with spill plates made the car very tail happy without shock/rear wing adjustment.
-Front wing: same support issues as above but may also impact the radiator inlet/cooling, considerable nose weight.
-Large front canards/winglets: Drag penalty, will require some additional support but not as difficult as the wing/splitter mounting, questionable as to how much front end downforce can be achieved with it (needs to offset COT wing with potential for rear tunnels/diffusers).
Any thoughts? Entire car is considerably lighter than it used to be, but much of what has been removed is nose weight.
Splitter with spill plates had the rear end very tail happy, and mounting in the new configuration will be much more difficult/heavier than previously. COT splitter with no spill plates will have the same mounting difficulties, and had limited impact on front end grip.
Full on front wing is an option, but will likely get heavy in a hurry, will be difficult to mount, and will likely be overkill without additional rear aero.
Huge front canards/winglets will likely be the easiest, but I'm not sure it will provide enough front end grip. Mounting a set of "mini wings" that I can mount on either side of the front end that are adjustable would probably be the second easiest option, but either of these would allow me to add a splitter later if need be to offset.
I can go any direction, but am starting from scratch essentially, and am torn...
Concerns:
-Front Splitter: Ground clearance, length of fiberglass nose/short frame rails will require a lot of extra weight/bracing to adequately support it. Previous front splitter with spill plates made the car very tail happy without shock/rear wing adjustment.
-Front wing: same support issues as above but may also impact the radiator inlet/cooling, considerable nose weight.
-Large front canards/winglets: Drag penalty, will require some additional support but not as difficult as the wing/splitter mounting, questionable as to how much front end downforce can be achieved with it (needs to offset COT wing with potential for rear tunnels/diffusers).
Any thoughts? Entire car is considerably lighter than it used to be, but much of what has been removed is nose weight.
Splitter with spill plates had the rear end very tail happy, and mounting in the new configuration will be much more difficult/heavier than previously. COT splitter with no spill plates will have the same mounting difficulties, and had limited impact on front end grip.
Full on front wing is an option, but will likely get heavy in a hurry, will be difficult to mount, and will likely be overkill without additional rear aero.
Huge front canards/winglets will likely be the easiest, but I'm not sure it will provide enough front end grip. Mounting a set of "mini wings" that I can mount on either side of the front end that are adjustable would probably be the second easiest option, but either of these would allow me to add a splitter later if need be to offset.
I can go any direction, but am starting from scratch essentially, and am torn...
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03-08-2014, 03:11 PM
#668
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Join Date: Dec 2012
Location: Charlotte, NC
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Note that I wrecked with the previous splitter setup, hence the new nose. So, I'm starting from scratch on the front aero, other than the fiberglass nose which has an integral air dam.
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03-09-2014, 09:42 PM
#669
Sounds like you need more rear aero. Aero is a balancing game you want as much downforce as you can get within the rules without making too much drag, but you want the distribution to be correct.
To answer your question I'd go with the front wing, its going to have less drag and be more adjustable.
To answer your question I'd go with the front wing, its going to have less drag and be more adjustable.
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03-17-2014, 11:20 PM
#670
redid the front end in hopes of more downforce and better aero
1/2 inch birch ply tucked into sub frame, hung with wire. heated up the abs and bent it in toward the radiator.
Don't mind the tape on the lip. I still need to coat the wood and finish up the radiator ducting.
I am hoping with more splitter area and a more attack I will get more front end downforce so i can raise the AOA on the wing and profit.
1/2 inch birch ply tucked into sub frame, hung with wire. heated up the abs and bent it in toward the radiator.
Don't mind the tape on the lip. I still need to coat the wood and finish up the radiator ducting.
I am hoping with more splitter area and a more attack I will get more front end downforce so i can raise the AOA on the wing and profit.
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03-22-2014, 11:46 AM
#677
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Join Date: Oct 2011
Location: The Race Track & St Pete FL
Posts: 638
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I want to try something new
I'm installing several Naca Ducts in the underbody and am currently working on making a close out panel. The close out panel will go from the hole in the trunk to the rear panel opening, where there is a low pressure area. The exhaust from the 5.3 litre V8 will come out on either side of the lic plate at a upward 10 deg angle.
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