On Monday, I took my Atom to Whiskey Hill raceway.The weather was 78 degrees and sunny. I use a Racelogic PerformanceBox GPS data recorder.I ran the first 30 minute session with no wing and ran consistent fast laps of 1:46.8-1:48 seconds with a best of 1:46.8,which is only .2 seconds off what I ran at Time Trials on August 2nd of this year at Whiskey Hill(1:46.6 officially timed and recorded) with no wing.
So, with no wing mounted, on Monday,the car ran 1:46.8 seconds. What I expected and a good base to start from.
I then bolted on the Ciro wing and went out with the wing at zero degrees and recorded laps.Lap time averages dropped about .4 seconds. I then moved the wing to 10 degrees and ran a session. Lap time averages dropped about .7 seconds. Then moved the wing to 15 degrees and dropped a full second plus. I did this all day as it was a private test day so LOTS of track time available. My best time of the day was a 1:44.8, with the lap times in the 1:44.8-1:45.3 and this was accomplished with the wing at 15 degrees of angle. That was the sweet spot. The car felt very planted and stable.
With the wing at 30 degrees of angle,the lap times jumped up into the 1:48-1:50 range. There were some splits that were faster (around the slower corners of the track) but the overall lap times were higher with 30 AoA. Any higher than 30 degrees AoA increased the split times on the slower corners (wing stall,no added downforce) and dropped the trap speeds considerably,and lap times jumped into the 1:50 range. At the end of the day I removed the wing (easier to transport) and ran the last session wingless. Lap times jumped to high 1:46s-1:47s...It actually felt scary wingless...
My car makes about 235-240whp on 93 octane pump gas. The Ciro wing is a single element wing described earlier in this thread.
I am in 4th gear most of the time,with 5th being used at the exit of turn 14, and 3rd gear for turns 4-5. Top speed on the straight is 133mph wingless and 130mph with the wing at 15 degrees. I am sure with more HP and more downforce the car would turn faster laps,but that is a story for another day.
Link to WHR…
Palmer Motorsports Park
Track map..2.3 miles long and about 200 feet of elevation change..all carved out of a mountain top. Nirvana!! I'll be back there on Sept 11th and 14th/15th. Can't wait! Everyone that saw the car with the new wing loved it as well.
Track is run counter-clockwise. Yes, backwards to most any other road race track in USA. (I have run it clockwise..very very nice flow, but some dangerous runoffs, with too much drop…like 350 feet off a cliff..so they run it CCW.)

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