Called Rick today at Ciro design, and he asked me to send him dimensions for a single element wing, so I measured the Evo and it looks like 67" wide, and 14" tall for the supports? does this sound right? I will be racing NASA TT

 

someone can correct me if i'm wrong, but rules state no wider than widest point of the car, no taller than roof, and no overhang farther than the rearmost part of the car?

 

this is the rule for rear wing for TTF-TTB class.

4) Add, replace, or modify rear wing and/or spoiler +4 (a rear wing or spoiler may not exceed a height of eight (8) inches above the roofline (or BTM windshield height for convertibles), or a width greater than the width of the car body. (note: additional points must be assessed for end plates that are greater than twelve inches in height---G.8) below)


assuming you'll be running TT3 class, there is no aero limitation, if you take the NON-oem aero hit of 0.4

there is a list of free earo mods you can do without getting the .4 penalty.

D) TT3 Only Production Vehicle Aerodynamics (does not apply to TTU, TT1, or TT2)
The addition of non-OEM aerodynamic aides or modification of OEM body lines (unlessspecifically stated otherwise in these rules), will be assessed a Modification Factor to the “Adjusted Weight/Power Ratio” (7.4).

The following are permitted exceptions, and will not necessitate the assessment of the TT3 Non-OEM Aero Modification Factor:

1) Undertray/belly pan forward of the centerline of the front axle.
2) Removal of a convertible soft top/frame and/or adding a hardtop to a convertible
provided that the hardtop uses a sealed rear window and is either OEM, an OEM
option, or the same shape and size of an OEM/OEM option top.
3) Lexan front, rear, and rear side windows without uncovered holes.
4) Front wing window/frame removal and replacement with Lexan.
5) Hood replacement/modification for venting and/or weight reduction (“aero” hood pins are permitted).
6) Removal/cutting/drilling of the fascia for engine cooling, air intake, and brake ducting purposes.
7) Removal of rain gutters/drip edges, windshield wipers, and mirrors.
8) Flared and/or rolled fenders.
9) NACA ducts, air ducts, or air hoses placed in a side window frame solely for the
purpose of driver cooling.
10) Headlamp, headlight covers, and fog lights may all be removed. The holes may be left open, used for brake ducts, or must be covered with material that replicates the shape of the OEM light/cover, leaving the shape of the OEM fascia intact.


https://nasa-assets.s3.amazonaws.com...1--1-15-15.pdf

 

TY honda guy so I'm in the ball park? The roof is 14 inches above the trunk, and the width on the car at the quarters is 70.5 inches?

 

As he said, depends on which TT class your running, but in TT3 just no more then 8 inches above the roof line and no active motions. The rest is pretty much unrestricted in design.

 

Pulled the trigger today on the Ciro Designs single element I will report back once I have it on the car and been on the track.

 

Would active motions take into consideration "inadequate bracing"?

Hehe. Could come up with a relatively simple cantilevered carbon steel mount to flatten the wing angle out with the increased back force of higher speeds. Or, get a rubber rear trunk brace that flattens as the speed increases.

 

The obvious ones just create more rules . But ya the current rule was targeting aeromotions which uses gyro sensors and motors.

 

Has anyone fit or made a front splitter that can attach to the Beatrush under tray?

 

if you build a proper splitter, i'm pretty sure you won't need an undertray.

 

What do you mean by proper? I have seen a few from the forum, but not sure who has them done "correctly" or how I should follow up on this.

 

What he means is that the splitter is the under-tray. its just one big piece.

 

a splitter should replace the undertray and stick out past the lip, all one piece. well, it could. some don't such as APR, if i'm not mistaken.

i'm making my own and it will extend as far back as the undertray.

 

always nice to see when theory is applied, and works.

 

Ciro Single element attached and awaiting a track day One thing I can tell right off the bat... I need more front down force even with the full under tray and front splitter...

The stock wing even with Gurney does not provide very much down force at all.

Richard was a Huge Help and I must say thank you to him

-George