New Product: Competition Chin Splitter
02-04-2012, 10:24 AM
#76
Rennlist Member
Since I don't pick up air in front of the radiator anymore I was careful to block off the top. With this baffle, the hood vent and splitter my on track radiator temps are down about 15 degrees over before. So I am really moving some additional air through there. My fans do not run on track.
And yes that is my intercooler heat exchanger in front of the radiator.
Now back to Carl's thread.....sorry for the hijack. But what he is telling you I will confirm from my track results.
Ken
And yes that is my intercooler heat exchanger in front of the radiator.
Now back to Carl's thread.....sorry for the hijack. But what he is telling you I will confirm from my track results.
Ken
02-07-2012, 12:53 PM
#78
Rennlist Member
I used a set of Carl's skid plates as the mounting point. I've been running this set up now on track for two years. My splitter has a central area that allows for some additional cooling to the oil pan. Last pic is the cardboard mock up.
I do like the composite over my aluminum. I've "mowed" with mine and hit a racoon on the highway at 65 MPH...but no big offs
where the splitter really would dig in.
Link to vent
https://rennlist.com/forums/showthre...ferrerid=19521
Link to splitter
https://rennlist.com/forums/showthre...ferrerid=19521
Ken
ken, looks nice.
ive done something similar with my under radiator area. i would rather have some air flow to the oil pan, than a flat undertray.
it all works for all the known reasons.
Mark
02-07-2012, 04:11 PM
#79
Developer
Thread Starter
Interesting note from this months's (February 2012) Car and Driver Magazine.
They tested some cars at VIR, among which was the new 2012 Mustang Boss 302 Laguna Seca Edition.
The Ford factory has seen to include chin splitters on two of its performance cars now.... and the editors said it helped the front end understeer at VIR, although they also said it wasn't enoough - the Mustang still had some plow this year, albeit less.
I only offer this in the "will you ever go fast enough on the street to benefit from a chin splitter/air dam combo?" question, to which I say "yes, you can, and others think so too".
Another reason why I think you do go fast enough on the street to receive some benefit from some sort of air dam/spoiler: Porsche thought so too. The "S" chin spoiler on our early cars was designed to bring coolant temps down and cool the brakes - which it does.
Not just any air dam/spoiler of course... it has to be designed right.... but I do believe YES benefits can be had at street legal speeds.
They tested some cars at VIR, among which was the new 2012 Mustang Boss 302 Laguna Seca Edition.
The Ford factory has seen to include chin splitters on two of its performance cars now.... and the editors said it helped the front end understeer at VIR, although they also said it wasn't enoough - the Mustang still had some plow this year, albeit less.
I only offer this in the "will you ever go fast enough on the street to benefit from a chin splitter/air dam combo?" question, to which I say "yes, you can, and others think so too".
Another reason why I think you do go fast enough on the street to receive some benefit from some sort of air dam/spoiler: Porsche thought so too. The "S" chin spoiler on our early cars was designed to bring coolant temps down and cool the brakes - which it does.
Not just any air dam/spoiler of course... it has to be designed right.... but I do believe YES benefits can be had at street legal speeds.
02-07-2012, 04:32 PM
#80
If you read the article they state it is "there to increase traction" and the upside is the rear never threatens to snap around. The rear has too much traction. They do not state that the splitter actually WORKS. This too probably came out of the Marketing Department and not Engineering. They also mention entering the essess at 120 mph in the Audi, not exactly street speeds for most. And magazine editors and authors are not always to be believed or considered unbiased experts.
02-07-2012, 06:02 PM
#81
Race Director
its also interesting that the Boss 302 Laguna got SPANKED by a Camaro ZL1.....on a road course.....I wasn't expecting that....especially with Randy Probst driving, since hasn't liked the handling of the Camaro in the past
02-07-2012, 10:24 PM
#82
Rennlist Member
Carl, ive run 2:01 with no splitter at thunderhill (or wing) and it was a handful. however fully equipped, i run consistantly in the 1:59s. the difference are only in turns pulling 1.4 gs and running 80 plus MPH, which you never do on the street. you think you do, but you dont. i remember scrubbing tires, at the edge of disaster going up famed, hyway 9 in california. 1 laps, lots of dangerous fun 15 years ago. when i got to the track, the g forces were so great, the tire rubbed on the inside of the rear fender and pushed the tire off the bead of the rim. most have NO ability to push a car hard enough to use a splitter, not even me , on the street, and ill be the first to admit it!
now, it wont increase cooling to the radiator, because the frontal pressures dont increase with a splitter it takes as much aiir as it can with a measureable pressure drop across it. a splitter doesnt change that. hood vents and venting behind the radiator can effect that, but not a splitter. however, it will certainly route air to the brakes, just by having an opening, as our early air dams and S4 airdams have. the only way to get more air flow to the radiator is to open the opening up. see my splitter below, this car was 8 seasons in to racing. temps over that 8 years were always the same. never an issue and always predictable. splitters didnt help and I ended up with on 8" wide!!
when i had an over heating issue at thunderhill on a 110degree day, i cut a hole , Like JV did on his picture at road america. as Greg brown says, "i used an Ax to cut it" it was pretty bad, but with my new black car, i just cut slats, equal to the cuts that the S4 has already and it helped tremendously. the hoood vent helped too venting hot air upward being pushed out due to the differnetial pressure of the underhood , frontal pressure air, vs the vacumm over the mid/frontal hood area. (all scientifically meausured and documented pressure changes, matching those that porsche found on its aero drawings, complete with pressure values as well! )
now, it wont increase cooling to the radiator, because the frontal pressures dont increase with a splitter it takes as much aiir as it can with a measureable pressure drop across it. a splitter doesnt change that. hood vents and venting behind the radiator can effect that, but not a splitter. however, it will certainly route air to the brakes, just by having an opening, as our early air dams and S4 airdams have. the only way to get more air flow to the radiator is to open the opening up. see my splitter below, this car was 8 seasons in to racing. temps over that 8 years were always the same. never an issue and always predictable. splitters didnt help and I ended up with on 8" wide!!
when i had an over heating issue at thunderhill on a 110degree day, i cut a hole , Like JV did on his picture at road america. as Greg brown says, "i used an Ax to cut it" it was pretty bad, but with my new black car, i just cut slats, equal to the cuts that the S4 has already and it helped tremendously. the hoood vent helped too venting hot air upward being pushed out due to the differnetial pressure of the underhood , frontal pressure air, vs the vacumm over the mid/frontal hood area. (all scientifically meausured and documented pressure changes, matching those that porsche found on its aero drawings, complete with pressure values as well!
)
02-07-2012, 10:34 PM
#83
Rennlist Member
Since I don't pick up air in front of the radiator anymore I was careful to block off the top. With this baffle, the hood vent and splitter my on track radiator temps are down about 15 degrees over before. So I am really moving some additional air through there. My fans do not run on track.
And yes that is my intercooler heat exchanger in front of the radiator.
Now back to Carl's thread.....sorry for the hijack. But what he is telling you I will confirm from my track results.
Ken
And yes that is my intercooler heat exchanger in front of the radiator.
Now back to Carl's thread.....sorry for the hijack. But what he is telling you I will confirm from my track results.
Ken
02-09-2012, 06:00 PM
#85
Rennlist Member
Mark,
I was referring to where I pick up the air for the engine. I am picking the air up for the engine through the passenger fender well.
Included another pic of the splitter center section that is at 17degrees rake. I believe this helps cool the sump.
Ken
I was referring to where I pick up the air for the engine. I am picking the air up for the engine through the passenger fender well.
Included another pic of the splitter center section that is at 17degrees rake. I believe this helps cool the sump.
Ken
02-09-2012, 07:06 PM
#86
Team Owner
that looks dangerous using the sway bar for a jackstand point, maybe yours are reinforced still not a place to support the front end.
\
I would suggest to remove the fuel gauage after your done testing the system
The splitter looks good as does the top radiator block off plate
\
I would suggest to remove the fuel gauage after your done testing the system
The splitter looks good as does the top radiator block off plate
02-10-2012, 01:21 AM
#87
Rennlist Member
probably not a bad idea, but over the radiator would be (is) a higher pressure zone. when i was using the fake headlights, the covers poped outward, not inward, which showed that the pressure was higher on the top of the headlight vs under the headlight cover. it looks like the best place to get air with the supercharger due to the room needed for the filter.
02-10-2012, 11:24 AM
#88
Drifting
Mark,
did I miss it ....did you post pics of your air device on front of your car, splitter or dam . also could you accomplish the same thing ( increasing airflow through the radiator) just by elevating the rear of your hood by a little? vs cutting a hole in your hood as you did?
andy
did I miss it ....did you post pics of your air device on front of your car, splitter or dam . also could you accomplish the same thing ( increasing airflow through the radiator) just by elevating the rear of your hood by a little? vs cutting a hole in your hood as you did?
andy
02-10-2012, 01:06 PM
#90
Three Wheelin'
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that looks dangerous using the sway bar for a jackstand point, maybe yours are reinforced still not a place to support the front end.
\
I would suggest to remove the fuel gauage after your done testing the system
The splitter looks good as does the top radiator block off plate
\
I would suggest to remove the fuel gauage after your done testing the system
The splitter looks good as does the top radiator block off plate
That splitter looks really good, and I like the air intake in the fender idea. That fuel gauge on the rail scares me tho, too nice of a build to risk to a failing gauge.