mountainbiker2

What angle do we put the under tray? Can you give me a reason for your answer?

thanks,

Steve A.

Falcon

The front of the splitter should be lower than the rear of it, otherwise you'll be creating lift.

VGLNTE1

stick your hand out the window at 70mph...the angle you start to feel the wind push it down, use that one. lol

John Shiels

You are trying to create a vacuum or negative pressure under the car. When there is a negative pressure air travels faster creating lower pressure hence more down-force or negative pressure. That is why a real diffuser tries to straighten the air and make it exit faster. That is why you want a flat as possible bottom on a car or even fully plate it. It creates less turbulence for faster exit. Just think weather if your are in a low pressure zone it tends to be windy as air travels in to fill the gap.

Jaymz

With my setup I can adjust the rake on the splitter. I try to get 2 to 3 degrees down. I measure this with a digital level at the track with the car sitting as level as I can get it.

mountainbiker2

How wide is your under tray? Mine is 30". 2-3 degree of rake would be around 1" to 1.5" lower in the front. I don't know if my figure is right, but is yours that steep?


thanks,

davidfarmer

I think as long as it is level, or slightly lower in the front, it is effective. Usually you add venturis to the undertray instead of cambering the entire splitter.

Jason

Not this low:
http://www.youtube.com/watch?v=_fm_CgLaCQ4

BERETTA

Thats gotta be $500.00 worth of sod at Barber...

el es tu

That was an interesting race. What made the rx8 driver cross the track like that?

Falcon

If I remember correctly, the RX8 had spun off track right, and thought he was in the clear when he pulled back on track. The DP car came around that turn pretty quickly and had a windshield of RX8 and took evasive action.

redtopz

That rx8 driver was really bad. First he spins for no reason, then he pulls 90 degrees across the track with multiple cars flying towards him. He must have a lot of cash, because he didn't get there on talent alone...

TLGunman

and that is how tough your splitter should be!

Falcon

I just measured my undertray and the angle is 3*.

John Shiels