i see alot of the autocross guys using the P1 splitter setup. Just curious on when a front diffuser would be needed in drag racing. or would it never be needed? thoughts ideas?

 

I'm not sure on all classes but I can only run 1" past the front end as a splitter. Kenny Tran had a nasty one back in the day before that rule was made. I'm going to try some things but can't go much more into detail on that front.

It will create downforce for sure, but I'm not so sure the effectiveness. We aren't side loading the tires or unsettling the car throughout the run whereas the road race guys are doing it constantly which is why they see such a claimed drastic change before and after.

 

even if it didnt stick out that far. it would still give the air a more direct path to the back of the car. i know that air is gotta be making some turbulence going through the air dam and bouncing off the engine firewall is gota be fighting against us. so put something that covers that area to an extent creates a even airflow to the back of the car. maybe even making a similar diffuser for the rear of the car. to flow evenly to the front to the back.. like the lotus elise

 

wowwwwwwwwwwwwwww

 

Yea there is no doubt that it will help, aero is a huge part and not a lot of people pay attention to it. I could go on all day but it's useless haha

 

hell i would try it. just not sure on what kind of material to use. thin aluminum? carbon fiber would be crazy expensive..lol im on the budget end right now stupid economy

 

road racers cant extend beyond the front of the car so they have less advantage than that. the p1 splitter is designed that way.

 

Yea I was talking more drag specific and the hot-rod class, although I'm not actually building the car 100% around a class that seemingly doesn't exist lol

OP, you can use aluminum. No point in CF. I feel like you're talking more about a full under belly pan such as that lotus. I've always referred to the perfect aero setup looking like the bottom of a hot-wheels car or die cast model.

 

lol i never thought of it that way. but ya your right. full under belly pan.. Also like the corvettes they have a full aluminum underbelly pan as well. and well we all know where the corvette stands on aero seems to be a great setup to go off of.

just figuring out how to do it in the rear with the gastank and rear suspension. around there.

 

that diffuser on the lotus looks nuts 1 piece

 

Bergenholtz had one on their CRX for an event or 2 years ago... We had to take it off though... Officials said that it was an unfair advantage... Same thing happened when we brought the car out with a wheelie bar...

 

No, it has at least one piece that can be removed for oil changes. Been there, done that.

My 05 Subaru GT wagon has flat panels under car also, though it's not totaly sealed, the only open area is the normal tunnel for the exhaust and driveshaft. It's still better then all the different surfaces that used to be under a car.

 

pics of this p1 splitter?


Eddie Rosado

 

Hit up the road race forum, threads galore on it lol

Or MMR racing should have it on his site. Well at least I think it's MMR

 

bottom of an enzo lol

 

im sure that spent quite a bit of time in the wind tunnel

 

haha yeah it did but the general idea is there.

if you are going to be making a full underbody splitter you will want it to be competely closed, but have a channel for slower moving air to go through and the faster moving air to run under the splitter. also the top size and bottom size are important.

personally i have never seen the point in putting splitters on FWD cars, im sure they may work but the design is something that will require testing like P1 did do.

 

wow i would think to mkae the car fly threw the fast speed current ?