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04-14-2010, 10:18 PM | #1 |
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Official Results for the #21 COBB Tuning Subaru in Redline Time Attack
Hey Guys,
I'd like to dedicate this thread to the coverage of the #21 COBB Motorsports Subaru which will be participating in the National 2010 Redline Time Attack Series. Here you will find comprehensive re-caps of each event, including pictures and video. Please enjoy, and questions, comments and suggestions are more than welcome!
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04-14-2010, 10:37 PM | #2 |
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BUTTONWILLOW ROUND 1
Review of ButtonWillow Raceway Redline Time Attack General review of the weekend: Overall I was incredibly pleased by the performance of the #21 Subaru, the performance of the car's team of mechanics, my car chief and generally the COBB team as a whole. I think everyone worked very well together, and the dynamic between Car chief and car mechanic with regard to Brian and Calvin, was one that worked well and gave me what I needed to perform. I valued the driver input from Gary and Brian highly; the experience they have is something I will use this year to help develop and improve my role as a driver. Each team member was able to work collectively and mesh together in such a way that promoted "fluidity" in our pit; mechanics and car chiefs worked between cars when needed, offering their own advice while trying to sort issues that arose over the weekend. While the weekend wasn't marked by any catastrophic issues on the STi side of things, we were presented by a problem with the assembly of the new suspension; as a team we were able to consult one another and settle on the best plan to address the issue, and in the process assessed the both long-term and short-term repercussions of our decision. It is this kind methodical approach that I really like to see between mechanics and, at the end of the weekend, our decision to revert to our backup suspension landed us a podium finish. Tempers, attitudes, and egos seemed to be "checked at the door"; everyone understood what we wanted out of the weekend, and conducted himself or herself in such a way that kept these goals in mind. At no point in the weekend did I see any "head butting" between mechanics or car chiefs, or car chiefs and crew chief. I was very impressed by the ability of everyone to genuinely listen and value the opinion and advice of their fellow teammates. Personal Notes on Performance and Car Performance This weekend required some big adjustments on behalf of both me and my car chief, Brian. Coming out of SCCA wheel-to-wheel competition, the transition to a Time Attack was going to be something new, and I knew this going into the weekend. I have a limited number of tracks under my belt, and the process of learning new tracks will be something I need to develop and hone this year; I was able to take advice from both Brian Lock and Gary Sheehan on how to approach learning a new track, which was greatly helpful. In wheel-to-wheel competition I'm used to analyzing the competition and waiting to make a calculated overtake, whether it be 4 or 14 laps into a race. In Time Attack the competition is the clock, and racing the clock presents its own set of challenges. By the end of Saturday practice, I was feeling very good about the performance of both the car and myself, having run the fastest time of the day in Street AWD with a time of 1.57.9. Going into Sunday we ran into several issues that upset an otherwise smooth weekend. During the first morning session on Sunday, the plastic peddle stop underneath the accelerator dislodged causing the car to enter "limp mode". This resulted in a loss of practice time as we had to have the car pulled of track. Later in the first afternoon session, I made an error with positioning the car following the warm up lap, which ultimately led to having to sacrifice our first Hot Lap. I attribute both of these issues to this being our first event for both me and the car; given more development and experience with the Time Attack format issues like this should become less frequent. By the time the first Time Attack session rolled around, we were feeling calm and ready to perform. We managed a time of 1.58.9 on track about a second off from our best time set late in the day Saturday. The time discrepancy could be accounted for by inconsistencies in my driving performance, but we figured that it was more likely the difference in ambient track temperature, which was right around a 40 degree increase between the two days. By the end of the second Time Attack session we had set another fast lap of 1:58.8, which was good enough to put us in 3rd place behind to Evo X's. I'm not one to rely on excuses to justify performance (or lack there of) but given our current setup, I honestly think we performed the best for what we had. The HB speed Evo, piloted by Jon Drenas, clinched second place by only 7/10ths of a second with Steve Ruiz in the Stop Tech Evo in first place with a 1.57.5. To my knowledge, these cars were running approximately 75-100 more whp than we were running; along with properly setup double adjustable suspension. Had we been able to install and tune our new AST's throughout the weekend, and not rely on an ageing set of Ohlins singles, there is no doubt in my mind that our car would have been well into the 1.57's if not the 1.56's. This weekend it came down to car setup, and in that regard, we were simply at a disadvantage. We ran times that were incredibly consistent, varying by mere tenths, which tells me that car setup was hindering further drops in times. Looking forward to New Jersey in two weeks, we should have the AST's on and will commence tuning over the course of that weekend. For our first time out, I think we set a very respectable benchmark with a podium 3rd place finish in Street Tire AWD, and a 4th place finish overall in the Street Class. This first event at Buttonwillow has told us a lot about what we need to develop in the car as well as what I need to work on as a driver. I'm excited to take what we've learned on this first weekend and apply it to changes in car setup and my own approach to Time Attack, and I'm confident that using the knowledge we acquire from each event will continue to secure us podium finishes and propel us forward to 1st place finishes in the very near future. ! -Thanks, cam. I welcome your questions and comments. Last edited by WoopWoopSti; 04-15-2010 at 01:40 AM. |
04-14-2010, 10:48 PM | #3 |
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NEW JERSEY MOTOR SPORTS PARK ROUND 2
Practice This weekend's Redline Event at New Jersey Motorsports was trying for the Cobb Tuning Motorsports Team. We began our weekend running consistently the fastest times in Street Class Overall, posting a 1.12.1 on the 1.9 mile Lightening Track Configuration. Saturday's track temperatures were great for the car; we were making great horsepower at out 25 psi map, and track temperatures gave us the levels of grip we needed to confidently begin dialing in the new coil-overs. Brian Hanchey of AST was trackside to help us continue setup development on the #21 Subaru, as the AST 5200 series suspension was now on the car. First session on the new suspension was definitely an experience! The car finally felt like it was properly sprung, the high-speed carousel was immensely fun as the new suspension allowed for increased entry speed as well as mid-corner stability. Our times dropped continually over the course of the day on Saturday, and we managed the 1.12.1 late Saturday as track temperatures had started to cool. While we had a comfortable 1+ second lead on our competition, it was late in the day Saturday that we first identified an issue with the waste gate on the car. Our logs showed over boost peaking at above 2.0 Bar; a quick survey of the engine bay by car chief Brian Marsteller and lead tuner Tim Bailey revealed the initial problem. A line fitted to the waste gate had become loose and the threading on the wast-gate housing was stripped. Car chief of the COBB Tuning GTR, Dustin Harris, lent a hand in mending the issue and soon it was back out of the paddock and onto the track. We ran Sunday's first practice session in confidence, until our over-boost issue re-appeared in our second session of the day. With boost levels peaking somewhere above 30 psi, it was clear that we would have to come up with a solution to prevent potential engine damage. Tim and I discussed several options, settling on the decision to run our boost controller off the intake manifold. While this approach would prevent potential engine damage, it left us with a boost ceiling of about 20 psi, or around 390 whp. These numbers were significantly lower than our main competition, which at this point had presented itself as both an Evo XIII and Evo IX. Our strategy was to run smooth, consistent laps on the 19 psi map, with hopes that we would still manage a podium finish. The final practice session of Sunday proved that this was going to be a struggle. As the car was down on horsepower, the suspension tuning we had sorted the day before, when running 460 whp @ 25 psi, was now working against us. The higher horsepower levels we were running Saturday allowed me to use throttle input to help rotate the car in the tighter section of the course, turns 1-5, and the rebound compression settings were setup for a car at those power levels. We bumped up rear tire pressures, took some of the rake out of the rear wing, and disconnected the front sway bar, with hopes that we could get the car to rotate better and be more responsive mid-corner. Redline Time Attack made available section timing, allowing us to compare our times from both the tighter 1-4 complex and the carousel with the front straight, against the times of our competitors. Timing showed us off first place by a mere 2/10s in the tighter portion of the track, but a whopping 9/10ths in the wider carousel and front straight portion, where horsepower is critical. The changes we made were a gamble; with a mere hour before our first Time Attack session we were doing what we could to make up for our loss in horsepower. When times were posted from our 3rd practice session, it was clear that we needed more setup time at the lower horsepower setting. Time Attack Sessions We needed time that we didn't have. We went on to run the setup from practice session 3 in the first time attack session; the lack in horsepower and matched with our setup changes netted us a disappointing 1.14.1, nearly 2 seconds off our fastest lap the day previously. With input from both Brian and Tim, we made the decision to revert our setup back to what we were running late in the day Saturday, and run the 25 psi despite the over boost issue, for the second time attack session. It was a risk, but having discussed the situation with Tim and Trey, we were confident that two hot laps in our 2nd timed session wouldn't pose a significant risk to the engine. The times achieved by our competitors in the second time attack session re-affirmed our decision. The Evo IIX took first place with a 1.12.1, frustratingly mere 100ths off our time best time Saturday, the Evo IX managed a best time of 1.13.3 with us squeezing in front of them and into 2nd place with a time of 1.13.1. While the New Jersey weekend was marked with major issues for both the STi and the GTR, it also showed us the potential of our own performance. Coming from a point in the weekend where we thought we were looking at two DNF's to a resounding 1st Place Overall and a 2nd Place in Street Class justified our persistence and diligence and really showed us what the team is capable of. A new waste gate in addition to new tires will be fitted for the Las Vegas event, and with our over-boost issues solved we'll be able to use the 2 test days prior to the event to continue dialing in the new AST suspension. Our consistent podiums show me that our approach to car setup is working and that we have the formula needed to be at the top of competition at every event. you can hear the compressor surge and see the blown apex on the last corner of the track. Thanks for reading. I'd love to hear to comments and questions. -cam Last edited by WoopWoopSti; 04-15-2010 at 01:57 AM. |
04-15-2010, 01:00 AM | #4 |
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Suggestion: spell check your posts and start a new paragraph every 2-3 sentences.
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04-15-2010, 01:42 AM | #5 |
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04-15-2010, 02:51 AM | #6 |
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could you not secure a backup wastegate in time?
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04-15-2010, 03:49 AM | #7 |
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04-15-2010, 11:47 AM | #8 |
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Good lookin Cam! Keep up the hard work!
-Joey |
04-15-2010, 03:13 PM | #9 |
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Good job!
Half the fun of a race weekend is dealing with the issues It's boring just sitting around watching the clock! ... or maybe I've just never had a weekend where something doesn't need to be dealt with. Anyway, you're doing us all proud. Good luck at the next round. ps. With that big a$$ car hauler you didn't have room for spare wastegate?! I kid, I kid. |
04-15-2010, 04:56 PM | #10 |
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Sweet, Cam! Did ya scourer the parking lot? There are guys running mad set-ups in the Tri-state that have no business being on the street...and hence they should donate their parts to a track car
Ignore the haters about your write-ups. I appreciate you taking the time to detail the events. I would love to drive cars like this so I need some vicarious action. Hope to see you around PDX some time soon. Last edited by tazswing; 04-15-2010 at 04:57 PM. Reason: I can't spell |
04-15-2010, 11:16 PM | #11 |
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Some more pics!
Thanks for viewing guys, -cam |
04-15-2010, 11:23 PM | #12 | |
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Quote:
cam |
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04-19-2010, 12:02 AM | #13 |
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Just saw this thread. Good job at NJMP despite the issues. I know we've all been there before.
I'm going to have to dig deep in my bag-o-tricks to even be competitive with you, Fortune Auto, or Professional Awesome at Autobahn. Plenty of time though... See you in June! |
04-19-2010, 02:21 AM | #14 | |
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04-19-2010, 10:14 AM | #15 |
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All you really need to do is replace that WG with the water cooled versions.
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04-20-2010, 03:05 AM | #16 |
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04-20-2010, 04:14 PM | #17 |
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A paragraph can be as long as it needs to be to cover the thought or idea contained within it. Generally, a paragraph is thought of as a minimum of 3 sentences as the basic paragraph structure is introduction, subject matter, conclusion. When the idea starts to drift off subject a new paragraph should be created. Paragraphs, when used properly in writing, help the reader digest many subjects and supporting information in a nice, tidy structure.
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04-22-2010, 04:12 PM | #18 |
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Off to Vegas! I'll hopefully update this thread over the course of the weekend with pictures and updates.
thanks, cam |
04-22-2010, 04:45 PM | #19 |
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This is fun to read, who gives a **** about paragraphs, what are you an english teacher? Wrong forum I think.
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04-22-2010, 05:01 PM | #20 |
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04-22-2010, 05:21 PM | #21 |
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04-22-2010, 05:51 PM | #22 | |
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04-27-2010, 04:12 PM | #23 | |
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I should have video, pictures as well as a write up on the forum by late tonight or tomorrow. Thanks. ~cam |
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04-27-2010, 04:16 PM | #24 | |
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Thanks, cam |
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04-27-2010, 04:31 PM | #25 |
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writing up last weekend?
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