mark kibort

the fender area vent is not that great of an idea, as over the radiator is better for pressure gains. if you look at andeson and fans air inlet, thats the optimal spot for intake, unless you could have it vent from the base of the windshield, but that is not possible with most street cars

I take the air in from the two highest points of air pressure. above the radiator or in front of the radiator (near the same), and the base ofthe windshield. you dont want to raise the hood in the rear , as the pressure vents to the engine compartment. i seal that off and only have an intake vent to feed the air box. the same pressure as the front of the radiator as well. (maybe slightly higher).

the vent hole in hood, is to increase the pressure dff accross the radiator and take that air and vent it over the car, rather than under the car to increase downforce. (the vent is in an extreme low pressure zone, thus increaes air flow through the radiator, and keep it from going under the car from the start.

Carl Fausett

Ten races have come and gone, and here are some photos that show how the Competition Chin Splitter is holding up.

We painted our flat black (its white by nature) and the sand and small bits kicked up by the cars is chipping off the black paint. That's an easy spray-can touch up job.

But the edges where we have nudged the driveway, dragged on the pavement, or hit them going in and out of the race car trailer are all still great.

mark kibort

carl, i dont know if you know this, but you loose almost all of its effectivness by having an opening on the other side of the "flip ramp". the ends are now just flying neutral wings and defeat all effects as the high pressure zone that builds up, now just vent under the car and go toward the front wheels.

is there a goal in mind that ether is ok with this defeated purpose or was it just a pre -completed version rushing to the track with the conversion from salt tracker to the track?

Carl Fausett

... a little bit of each.

We captured and ducted the central air flow up to the radiator and left the ends open so the brakes can grab as much air as they want. I will tape over the holes in the supports - good idea Mark.

We let the customer do as much air dam and ducting work as they want to on this thing - and in our case, we did have a rapid transition from Bonneville back to road racer, and will again be transitioning after Mid-Ohio in August back to Slat Flats Racer in a big hurry. So we went "simple" with our duct designs.

If I am successful at Bonneville this year, I will not be going back. So we look forward to building for road racing and nothing but road racing and our designs can be a little more elaborate and focused.

mark kibort

you have it going on in the fab dept. very impressive. wish i was on your product dev team!

first of all, get that 2 valve intake bolted on a NA car to see what it does!

Mark

mark kibort

Kind of..... you tape over the holes and the excess air spills under the car. not good and defeats the entire purpose ofthe splitter and really doesnt do as much as you would think for cooling. in otherwords, the pressure front doesnt increase with a scoop up front.
second, you really want the air flow to transverse the splitter to the ends and route outward, beyond the wheel faces. otherwise, again,the purpose is defeated , and the air releases under the car, negating any downforce.

so, hog out the bracket holes so its a frame , get ride of the ramp to radiator , as that is not needed and would reduce the air flow diverted to the sides of the car. grab the air flow for the brake ducts with naca ducts under the splitter, or holes in the face of the bumper, or headlights.

mark kibort

get a nice hood vent cut in the hood, after you do bonneville. actually, you could remove or raise the splitter that is digging into the salt, and get as much downforce with hood vents, so you might want to do that too. then, the hood vents could be used for downforce at the track.
by the way, what did the car feel like on the track?? was it neutral, understeer? curious.