Not sure if this is the right spot for the question, but I'm seeing lots of other aerodynamic related posts in here. Here's the question:

Does anyone know what sort of downforce & drag numbers the WRC wing used on the Evo WRC cars? Specifically, I'm wondering about the one that mounts pretty far forward on the trunk lid, I think they were used in 2004 and maybe updated (widened) in 2005.

I did all kinds of searching last night and couldn't come up with anything. I know Mitsu has papers describing the benefits of the vortex generators, so I was expecting to see something like that for the WRC wing...but maybe they want to keep some data to themselves?

Thanks,

Dave

 

I know ACP ran one on his car and mentioned somewhere something like "It really works", obviously not what you're looking for, but he posts once in awhile on SS, so maybe you can try and pry some info out of him.

If you find a place to buy a replica, let us know.

 

The spoiler! How about the whole front clip too!

Contact MML

 

Yeah, but it also seemed that he dumped it pretty quickly too.

This might be a good question for him directly, as he has some significant experience. I can give him a shout if nobody else is already in contact with him on this.

Scott

 

I don't think it survived the X-games crash, and the orig. versions are crazy expensive. FWIW, I did ask Andrew yesterday if had any technical info on it, but he wasn't aware of any. He did say he was extremely pleased with how well it worked.

I'm basically trying to figure out how much downforce the WRC cars are trying to make to decide how big I want my new DHP Pikes Peak wing to be. If I can find a WRC one (and afford it ) I'd love to rock that at rally events.

Dave

 

Couple things.

- Placing a load on the back of the car will do two things. First it will add more weight to the rear axle. But the other thing it does is REMOVE weight from the front of the car.

- A proper rear wing is used to balance the aero load of the car when used in conjunction with front aero, like a splitter.

- The WRC wing was placed forward to help place the load more toward the center of the car. This is because the WRC cars can't run a good front splitter without ripping it off. Rally cars are too high and can't get much aero load up front. They do not make downforce - the wings are just looking to reduce the amount of lift.

I think that for stage rallies you are best to use a stock like or WRC style wing. For Pikes Peak you should run a different setup. And the wing should be sized to balance whatever load your front splitter can create.

I have all the sensors to monitor downforce on my car and am gathering data on my aero setup so I can custom build a rear GT wing that will perfectly balance my car.