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Thread: Ariel Road Course Laptimes

  1. #11
    Lepton cvjoint's Avatar
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    I'm using a bluetooth OBD II reader - OBDLink MX, with RaceChrono Pro. I also saw it on the list in Flashpro, so if you have that you can datalog it that way.

  2. #12
    Lepton cvjoint's Avatar
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    Thunderhill Raceway 3 mile w/bypass Best Time

    -Own time
    -1:54.65

    -Thunderhill East (aka Thunderhill 3-mile)
    -Counterlockwise (standard)
    -3 mile with bypass (said to be 2 seconds faster than over the top)
    -4/13/2019 @ 11:53am 67* dry


    -Ariel Atom SRA
    -modified
    -Keizer 10"/11" wheels with 245/295 Hoosier A7
    -HPD engine K24/K20 frank
    -no aero package
    -transmission: 6 speed manual
    -Go-fast options: none
    -Modifications: none

    -Warning/failure: low oil pressure in high G turns shutting off VTEC, upped oil weight and overfilled to fix
    -Anything that strongly influenced results:
    *tire retaining barrier added in turn 12 makes for slower laps
    *had old and new wheels mismatched with different width/offset on front
    -Feedback or notes:


    • Speed: 52.7 mph to 127.3 mph, average of 89.1
    • Lateral G: 1.6 to -1.4
    • Engine speed: 4,109 rpm to 8,214 rpm, average of 6,145 rpm
    • Coolant temp: 174* to 180*
    • Intake temp: 72* to 75*



    This run was with NASA in TT, I led the grid so I was able to get a clean lap or two in. Weather was perfect and tires were new. There is a second or two left in it especially if the tire retaining wall is removed. The new engine makes 59whp and 29 wtq extra compared to stock. The car is a bit heavier than stock due to large Laguna Seca friendly muffler and larger wheel/tire package. Overall it's about 10 mph faster on the straight. See my old run here on stock engine: https://www.arielatomchat.com/forums...html#post23525 but subtract 2 seconds from that time as the track had no bypass in that configuration.

    -Video or photos
    Go Pro battery was dead but got this video of a slightly slower lap
    VIDEO (half a second slower)
    https://www.youtube.com/watch?v=6tgf...ature=youtu.be

    Screenshot_20190415-152601_RaceChrono Pro.jpg
    Last edited by cvjoint; May 29, 2019 at 04:52 PM.

  3. #13
    Lepton cvjoint's Avatar
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    -Own time
    -1:45.83

    -Sonoma (aka Infineon, aka Sears Point)
    -Clockwise (standard)
    -Long Circuit (2.52 mile)
    -5/5/2019 @ 2:30pm 65* dry
    Attachment 3239

    -Ariel Atom SRA
    -modified
    -Keizer 10"/11" wheels with 245/295 Hoosier A7
    -HPD engine K24/K20 frank
    -no aero package
    -transmission: 6 speed manual
    -Go-fast options: none
    -Modifications: none

    -Warning/failure: none
    -Anything that strongly influenced results: tires @10 heat cycles
    -Feedback or notes:
    • Speed: 37.7 mph to 119.2 mph, average of 84.6
    • Lateral G: 2.5 to -1.6
    • Engine speed: 3,778 rpm to 8,152 rpm, average of 6,044 rpm
    • Coolant temp: 187* to 205*
    • Intake temp: 72* to 75*

    That's 2.5G in the carousel! I also hit 2.2 G in turn one.

    -Video or photos

    https://youtu.be/ldHPWuGr4-Y
    Last edited by cvjoint; May 29, 2019 at 04:50 PM.
    2/3rdsCobra likes this.

  4. #14
    Lepton cvjoint's Avatar
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    Laguna Seca personal best

    -Own time
    -1:35.33

    -Laguna Seca
    -CCW
    -Layout: standard
    -Bypasses none
    -May 27, 2019 @ 11:09am 55* semi dry
    Attachment 3254

    -Ariel Atom SRA
    -modified
    -Keizer 10"/11" wheels with 245/295 Hoosier A7
    -HPD engine K24/K20 frank
    -no aero package
    -transmission: 6 speed manual
    -Go-fast options: none
    -Modifications: none

    -Warning/failure if any:
    -Anything that strongly influenced results (e.g. corded tires, rock met face): it rained the day before so the track was very cold and wet in places, especially turn 3 where some spun out. Tires were definitely not up to temp, nor was the concrete grippy. Water running in turn 3 required a different line. Hoosiers at 20 heat cycles.
    -Feedback or notes:

    • Speed: 44.5 mph to 122.7 mph, average of 85.6 mph
    • Lateral G: 2 to -1.8 (hit max G in turn 2 on this lap)
    • 3,542 rpm to 8,064 rpm, average of 6,133 rpm
    • coolant temp 196* to 196*
    • intake temp 61* to 63*



    -Video or photos
    https://www.youtube.com/watch?v=FxpI8sCR0-A

  5. #15
    Lepton cvjoint's Avatar
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    Thunderhill Raceway 5 mile Best Time

    -Own time
    -3:04.83

    -Thunderhill
    -5 mile https://www.thunderhill.com/track-info/track-maps
    -Layout: standard
    -Bypasses no bypass, over the hill
    -October 18, 2019 @ 4:45pm 74* dry

    -Ariel Atom SRA
    -modified
    -Keizer 10"/11" wheels with 245/295 Hoosier A7
    -HPD engine K24/K20 frank
    -no aero package
    -transmission: 6 speed manual
    -Go-fast options: none
    -Modifications: none

    -Warning/failure if any:
    -Anything that strongly influenced results (e.g. corded tires, rock met face): Fronts were at 30 heat cycles, rears were at 5 heat cycles, understeer ensued. Driver had a terrible cold, so this is far from the best that can be eked out even by this guy.
    -Feedback or notes:


    • Speed: 43.6 mph to 126.2 mph, average of 84.3 mph
    • Lateral G: 1.91 to -1.71


    This particular layout/track is favorable to high power cars. Some McLarens will do well in excess of 160mph vmax. Even so, I started second on the grid this session, past the first guy and no one caught up to me. The Atom can really handle some big machinery!

    -Video or photos
    https://www.youtube.com/watch?v=9UTJlQk_DzE

  6. #16
    Fermion
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    awesome driving!!! I kept rewinding certain corners as some you took absolutely perfect. thanks for the vids
    cvjoint likes this.

  7. #17
    Fermion
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    Excellent job!!
    cvjoint likes this.

  8. #18
    Lepton cvjoint's Avatar
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    Quote Originally Posted by jordanhiggins2002 View Post
    awesome driving!!! I kept rewinding certain corners as some you took absolutely perfect. thanks for the vids
    This is our Nurburgring in the US, we call it Thunderschlife! I see all sorts of places where I was sloppy, it's hard to get 5 miles of course correct. Luckily no traffic though, so that's good for many seconds alone.

  9. #19
    Fermion
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    I was watching the seca track CCW. Thatís the vid I was referring to. Great driving and very aggressive

  10. #20
    Lepton cvjoint's Avatar
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    Quote Originally Posted by jordanhiggins2002 View Post
    I was watching the seca track CCW. That’s the vid I was referring to. Great driving and very aggressive
    Gotcha. Thanks! I can't wait to get back on that one when it's dry. Curious to see how far up the pecking order an Atom can get. Laguna Seca is imo the best measuring stick as you have a best time from a pro to compare against for almost every sporty vehicle whether racecars or production cars. Right now the best Atom time is 1:32.X which is on par with the Corvette C7 ZR1.

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