I contacted APR and they said they could make me a custom splitter to fit my car for only $300. Thats kinda expensive but considering premade ones already cost $200-$300 that isnt bad. I just need to mail them a template and they'll make it. I was going to build my own but i cant get anyone to help me plus im thinking about getting a body kit in the near future so id have to remake it. With this i can just reinstall it on the new bumper. I guess why im posting here.. is there any reason not to do this? Also, how far back should it go, under the whole engine? That way the little air that gets under the car is unobstructed creating low pressure.
Im still gonna probably do some custom work on it to make it match up the the bumper, give a bit more downforce and help bring the air around the car a bit more since this is just a basic design. Kinda like the pic of the one on the viper.. you have the splitter then canard looking things bring the air up from the splitter and creating downforce. Anyways what do you guys think?
looks like a good plan. there really ins't any need to go past the end of the bumper... even if you went under the engine, the wheel wells change pressure all the time with the wheels being turned in and out. the end of the bumper also gives you uniform flow as far as a termination plane (the last area that the splitter has an effect on the air).
you can see on the viper that it only goes to the end of the bumper.
Audacityracing wrote:looks like a good plan. there really ins't any need to go past the end of the bumper... even if you went under the engine, the wheel wells change pressure all the time with the wheels being turned in and out. the end of the bumper also gives you uniform flow as far as a termination plane (the last area that the splitter has an effect on the air).
you can see on the viper that it only goes to the end of the bumper.
hmm.. my friend cut his right after the bumper and some of the guys from a race group told him he should have left it. They said it does very little but still helps
Audacityracing wrote:the front edge is what determines the "splitting" ability.
Yeah but after that the smoother it is the faster the air flows; creating low pressure. I know there are still things that obstruct it. Im not arguing with you I just think it still helps
Audacityracing wrote:the front edge is what determines the "splitting" ability.
Yeah but after that the smoother it is the faster the air flows; creating low pressure. I know there are still things that obstruct it. Im not arguing with you I just think it still helps
unless you end up using rear-ward aero (diffuser), the front edge of the splitter is what determines your aerodynamics. sealing the under-sid of the car is tricky business, and just a splitter won't do anything past the front wheels, therefore, by having a flat terminal plane (as previously mentioned) the best aerodynamic balance is gained.
it wouldn't hurt to go farther... but it's weight, and useless material that costs money.
I've been thinking of sealing off the whole underbody of the car and possibly a rear diffuser. It wouldnt be too hard, just a huge pain in the ass. If i can get my brother in law or Dad to help me then i will do it. I think having the splitter come back will help seal off the underbody and give something more solid to go off of rather than just the edges of the car with some support. The rear diffuser would be the hard part though.. and im still not sure exactly how much it helps and all the things it does. I havnt even started to think of how to make it either; i just started learning about it a few nights ago. Know any good articles?
btw, rear diffusers account for about 30% of a formula one car's downforce and about 60% or an lmp car. since you're shooting for lmp style courses/speeds... you can see the importance.
Audacityracing wrote:
do you understand the concept of a diffuser?
wow didnt know they created that much downforce!
The only thing i can think of that it does is make the car more stable at speed and creat a low pressure under the car. But i know theres gotta be more more if they help create that much downforce.
