Grassroots Motorsports LIVE! on Wednesday July 18: Ask the Aero Guy

hey, I know that guy.

bring the questions...

I have a concert to attend, but I want to know more about underbody directed airflow vs added chassis tubes on a stock floor. I’m a drag racer and wonder if it’s worth the time and effort on say a 10sec/125 plus mph 1/4 mile car faster or slower. Can’t do any visible exterior mods for airflow.

I hope to put a real drag pass on the Challenge car tonight or I would be there!

And hello from the studio. The Corvette's on the lift, and Steve is doing aero stuff. 

And we're live:

This is one I'll be watching when I catch up to it. Considering as flat a floor as I can fabricate for the Supra. Will likely involve oval exhaust tubing to make this a reality. Just... so... much... work.

Then again, most of my theories have panned out on this car so far, and I keep coming back to this one, so... I'll get to it eventually. Lots of research first.

Yeah, I need to go back and re-watch it as well. Lots of amazing info shared. 

In reply to Ranger50 :

you can get the added underbody tubes to act as fences to direct the air under the car. 

depending on where you put them and what sizw/shape they are, they COULD make downforce, but will likely add some small amount of drag. the net result will probably be a slower trap speed, but the downforce/stability effects may result in better total times (if the changes help get traction early/mid track).

as a side note on my previous post, the chassis tubes may have secondary ( actually primary) goals of chassis tuning which could significantly help the launch and first 1/4 of a drag pass.

Make every part so at least two jobs, for efficiency...