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Old 03-27-2018, 10:58 AM   #26
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Light-up Subaru emblem ?

https://www.japanparts.com/parts/detail/51397
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Old 04-11-2018, 09:30 AM   #27
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Some technical info from testing last month, report and pics by autoprove.net (bare with the translation).


The WRX STI machine, which was built with various ideas incorporated, is finally finished. It airs to Germany on March 22, but the test also came to the final stage. This time it was a specification machine close to actual production, we did the items of time attack, night sessions, and long run test, and the general manager Tatsumi Eiji seemed to have come to handling <report: editorial department>

In the previous test report, we tested the brakes that revived the master back and run tests without using the anti-lag (misfiring system) and with the setting that the gear ratio of the transmission is 17 years specification. And the problem in 2017 race was the shift shock of the mission using dog was big.As a solution to that, we respond by reducing the weight of the flywheel and replacing it with a smaller clutch of inertial mass. And change the gear ratio, run a race performance with a slightly lower gear than the 17 year specification. It was up to that place.In this time, all the corresponding parts were assembled, and it was a real running test with all of them.

■ Gear ratio of best matching
The weight reduction of the flywheel and the replacement to the small clutch seemed to have made 2017 as 10, at the beginning with half the mass and size. However, if it is too light, the rotation of the engine easily rises and falls drastically, there are cases where the tooth jumping may occur due to adverse effects on various parts. Therefore, as a result of reproducting with a weight reduction of about 70% and intermediate inertia and a small inertia mass, it was said that it was amazingly amused. There was a comment from the driver that the shift shock was no problem and the shift quality was good.With this, even using the full advantage of the sequential benefits in the evening, you will be able to make full use of the left foot brake and earn cornering speed.

It seems that good results have been obtained for unexpected results regarding the gear ratio. The problem with the 2017 specification is that the 1st gear is a high gear, it is difficult to start, and when you step by step from that gear, you get a halfway feeling when you are in 5th speed and 6th gear He seems to have existed for a while.

In other words, when climbing uphill with full throttle, there was a situation that the rotation increased excessively at the 5th speed and the 6th speed was unsatisfactory. This mid-grade mission matched perfectly, so it is easy to start low speed corners and to start, even in the high speed region the selection of gears is not halfway.

According to Tatsumi coach, there is concern that the driver may feel a sense of incompatibility because the gear ratio has changed to 5% to 10% on the whole as a low gear. However, both Inoguchi and Yamauchi had comments that there was no discomfort at all.

There is not much in the Nürburgring as far as the corner to use the first gear, but there are not a few. For Fuji Speedway, 1 corner and B corner use 1st speed. The vehicle speed will be around 70, 80 km / h. There is a good connection of gears there and it is easy to run so it can be said that it is the best match gear ratio.

■ Finished with higher expectations


Well, from the end of February to March 1st and 2nd, it is important to check not only this test but also each part for the final specification.One is the item of adaptation of the engine, there is a partial change in the regulation this season, although the turbo supercharging pressure is limited by 2.5 Bar(36.25psi), although it is unchanged, even at the moment such as overshoot, its limit boost pressure It was changed to a rule that increased the severity that it should not exceed. Until last year, the momentary supercharging pressure over was okay, but this year it will not be recognized. It is also mandatory to install a sensor to judge whether the boost pressure is not over. It also serves as a conformance test.

Besides, it is confirmation of control to suppress backfire. This is a phenomenon similar to anti-lag when backfire is repeated at deceleration, there is a risk that the turbine speed does not drop and the exhaust burden is exerted, and there is a danger that the exhaust pipe will crack. Confirmation about this area was also done.In long-run tests, I ran about 22 hours, there was no trouble in particular, and at checkpoint no problem occurred, so expectations will finally expand towards the actual turn.

■ Anxiety that remains slightly


However, there seemed to be one concern for general manager Tatsumi.
"It may be impossible to run if the temperature of the rear tire for rain is bad and the temperature of the road surface is lower than 10 degrees.The heat will be released from the front because it cuts the steering wheel but at AWD, There is only half of FR, it is kind to the tires, so the heat does not go up. "

Three types of slick tires are currently being tested, those of low temperature and hard type used at 15 degrees or less. And the main ones to use are tires of almost 17 years specification, which are three kinds of tires with track record that the road surface temperature does not matter from 15 degrees to 35 degrees.

In the test this time the road surface temperature became 10 degrees or less, it seems that the road surface temperature has decreased to about 5 degrees. At that time I used a low temperature tire but I did not get the time. According to the driver, it is a comment that there is a time of good feeling, but it will soon be gone. The taste of the delicious part would be a short type of tire.

On the other hand, the tire we are considering on the main is also tested when the road surface temperature is 5 degrees. Then, in a good sense, I reversed the forecast, and the main tire knew that the lap time did not fall. It was as if it were a magical tire, and I understood all-around things. In cold tires the lap time will be about 1 second less than the main tire. However, it was unbelievable that the lap time did not change even if the main tire was forcibly used.

It is true like a lie, and for dry tires this is about to fight the real race with almost one type of tire. The remainder is a rain tire. In the Nürburgring in the middle of May, rain and low temperature are conditions that can be satisfactorily, so we want to deal with it, but it is hard to make a measure for the absence of tires. However, it is said that Tatsumi coach has a mystery strategy. Although I did not confidently describe its contents truly, I promised to tell you after the race, so I think I can tell you either.

In this way I finished three long-run tests successfully, but there is still one night session test left. I changed the date and tested the night session in mid March. This will be the real final domestic test.

This test was not a 24 hour production engine, but it was tested with an engine used for the QF race (held on April 14th and 15th). The engine we have used has already used about 20 hours, and the drivers who compete in this QF race are Carlo Vandam and Tim Shulik. They are partners in the production race.

However, in the test of this day both Carlo and Tim are not going, Yamanouchi and Iguchi are time attacks with new tires. Machine development is a strategy to build up with Japanese drivers.The time runs at 1 minute 46 seconds 2, and time that is about 1 second earlier than last year has come out. In the 2017 specification, the latter half of 46 seconds was the best, constantly it was in the first half of 47 seconds. However, the test on this day constantly marked the 46seconds, so it gave me confidence in the certainty of machine direction.In this way, we finished the last domestic tests safely and the remainder are the QF race in Germany and the test run in front of the actual.

Tatsumi 's coach' s race car creation makes it easier for drivers to ride with confidence without worrying about it, and it also makes it possible to create a machine that is not aggressive to the tires. It is also an irony part of the insufficient temperature rise of the rear tire, but the race with the road surface temperature of 10 degrees or less can not be thought of outside the Nürburgring, so if you think about the whole from the feature of AWD, , It may be said to be a machine construction that is less burdensome to the tires and drivers.





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Old 04-15-2018, 09:17 AM   #28
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Qualifying is live at http://www.24h-rennen.de/en/live-timing-ticker/. Live video with English commentary as well.

Radio LeMans website has live video with their commentary as well. Highly recommend that one!

If subaru does their U-Stream again this year we should have some nice options to follow race.

Last edited by CtStig; 04-15-2018 at 09:43 AM.
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Old 04-15-2018, 11:28 AM   #29
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Originally Posted by Homemade WRX View Post
Every modern endurance (FIA/IMSA) racecar uses ALS. It is drastically different from old rally style ALS.
The Ford GT has been using it since their debut; it's quite obvious.

It sounds like a buzz/growl from the onboard camera. I'm not quite sure how they're triggering it, but it only operates from turn in to just after the apex. It would be easy to disable based on boost target vs manifold pressure or turbo speed, but not sure how they initiate (part throttle + some combination of lateral G or GPS, ?)

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Old 04-16-2018, 07:57 AM   #30
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The Ford GT has been using it since their debut; it's quite obvious.
https://youtu.be/EGabsXD9lpY

It sounds like a buzz/growl from the onboard camera. I'm not quite sure how they're triggering it, but it only operates from turn in to just after the apex. It would be easy to disable based on boost target vs manifold pressure or turbo speed, but not sure how they initiate (part throttle + some combination of lateral G or GPS, ?)
https://youtu.be/YZSdZb81hkY
Oh, talking about 'my little friend'?



Ok, this was actually our prototype for the MY17 engine. Did this and the MY14 in the race car.
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Old 04-16-2018, 08:31 AM   #31
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Turns out that the qualifying run was cut short by a transmission problem, per Carlo Van Dam.....
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Old 04-16-2018, 09:15 AM   #32
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Does STI have their own stream for quali?
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Old 04-16-2018, 10:17 AM   #33
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^^^I'd love to watch that.
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Old 04-16-2018, 01:29 PM   #34
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Didn't have an STI live stream for quali but hopefully they will for the race as they have over the past few years. It was through UStream.
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Old 04-16-2018, 01:57 PM   #35
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They always do for the race, i couldnt find anything for today
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Old 05-09-2018, 01:39 PM   #36
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Anyone have insights into live online feeds for this year?
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Old 05-09-2018, 02:05 PM   #37
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Old 05-09-2018, 02:44 PM   #38
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Thats usually one of the feeds i have up for the event. I run a leaderboard and then STI's live stream on extra laptops
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Old 05-09-2018, 10:59 PM   #39
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A bit late, but for those who want to get caught up on some specifics of the Qualifying race last month(From Subaru Global)



The 6-hour qualifying race for this year’s 24 Hours of Nürburgring was held on April 15th (Sun) at Nürburgring, Germany, where the STI team entry, the SUBARU WRX STI (drivers: Carlo van Dam / Tim Schrick) was forced to retire mid-race due to drivetrain trouble.

Although the practice and official qualifying sessions held on the previous day (Sat the 14th) were blessed with clear, warm weather, the circuit was met with rain in the following evening. Due to this, by sunrise on the following day, the temperature was a fairly chilly 10°C and during the morning’s free practice the track was fully wet. However, by the start of the 6-hour qualification race, the weather had cleared and the road surface had completely dried. As always, the weather at Nürburgring was as unpredictable as ever. Despite the fact that the team’s Japanese drivers had come away with a good impression from the 2018 spec WRX STI after numerous test runs carried out at Fuji Speedway, several unforeseen issues occurred consecutively during the qualification race at Nürburgring. The problems began when an official indicated that the sound volume from the exhaust was exceeding 130 decibels. As the exhaust pipe remains unchanged from previous years, this marked the first time that this exhaust system had received such a warning. For this reason, the team reduced the engine’s shift-up point by 300rpm, which would make it difficult for this year’s machine to reach their goal of a lap time within 9 minutes.

Qualifying Report
In spite of this, they were able to record a lap time of around 9 minutes, 7 seconds, suggesting that if things went well they could conceivably aim for an even better time. That being said, if they weren’t able to run the entire course at full bore, it would be difficult to bring their time under 9 minutes. Team Principal, Eiji Tatsumi stated, “Obviously this was not a situation we had anticipated. Looking back on it, the new gearbox was rigged with a low geared setting and it’s possible that, along with engine improvements, this resulted in an increase in exhaust volume. We will attempt to lower the volume by adding a catalyst to the tailpipe before the tests on the 20th. Although this will somewhat increase resistance to airflow, I don’t think the impact will result in a significant lap time increase. It will also finally allow us to run at full capacity.”

Qualifying Report
When the 6-hour qualifying race began, the team’s next problem arose. The tires, which had seemed to perform so well at Fuji, seemed to lose their luster. Until this point there had been no indication that this could happen. The problem became apparent when only the inside of the tires received any damage, while the outside of the tires displayed no degradation at all. A lack of degradation on the outside of the tires indicated that the tires were not properly gripping the road surface and this was conceivably one of the reasons that they weren’t able to improve their times. Moreover, Carlo van Dam went on to say that the car was understeering considerably in every corner. During the Fuji tests Hideki Yamauchi and Takuto Iguchi had not mentioned a word regarding understeer. Tatsumi went on to say, “I was quite surprised by this because it was completely different to impressions related to us from our drivers up until now. However, it was clear that the damage to the inside of the tires was fairly pronounced and so I thought hard about what the possible cause was. What I came to mind was the fact that we had widened the treads in order to strengthen braking. I think this affected the vertical motion of the suspension and, furthermore, affected the gearbox and AWD system. This resulted in the car behaving in a way that it hadn’t up until now. This hypothesis fits in with what Carlo mentioned and all the issues that have occurred until now. The unexpected nature of the tire damage makes it clear that there isn’t an issue with the tires themselves but with the car’s settings.”

Qualifying Report
Finally, at the closing stages of the qualifying race, the new gearbox, which had been upgraded for this year’s 24 Hours of Nürburgring, failed, and the team decided to abandon continuing the race. Regarding this occurrence, Tatsumi stated, “We aimed to improve the operability and reduce shift shock with this new transmission, but it seems that those improvements may have ended up being the cause for this failure. Fortunately, we brought along a brand-new version of last year’s gearbox, which has been proven to be competitive in previous races, and so we will most likely be racing in this year’s 24-hour race with the 2017 specifications. We will also be returning the gear ratio from a low-geared setting to last year’s and this will most likely reduce the engine volume. We really didn’t foresee any of the problems that we encountered this time around, but it was probably very fortunate that we discovered them now. If they had occurred during the 24-hour race we would not have had a chance at taking class victory. In that respect, this turned out to be a good test for us. Of course, we fully intend to deal with these issues before the next tests on the 20th.”

Qualifying Report
The Nürburgring test day, in which the STI team will take part, will be held on April 20th and will consist of an extensive running frame lasting from the morning until the evening. This will become a test of the SUBARU WRX STI’s performance heading into the 24-hour race. The drivers selected for the tests are Hideki Yamauchi and Takuto Iguchi.



On a brighter note, the car passed inspection today.







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Old 05-10-2018, 10:24 AM   #40
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Old 05-10-2018, 11:29 AM   #41
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seriously, loud exhaust on that track? Give me a break. Sounds like someone in the Corporate office doesn't want Subaru competing.
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Old 05-10-2018, 11:48 AM   #42
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They have sound regulation because the track runs through multiple small towns for 24 hours granted its not lime rock where they'd send out heat seaking missles if you went over the sound limit but its understandable.
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Old 05-10-2018, 12:31 PM   #43
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From Mario Takano(Subie channel):

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Old 05-10-2018, 02:44 PM   #44
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Subaru’s official go-to 24h Nürburgring page:

http://sp.subaru.jp/nbr24h/
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Old 05-11-2018, 06:40 AM   #45
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1st Qualification footage from Subi Channel:



2nd qualification Live on Subaru On-Tube today(Friday) around 8:40am EST


Last edited by Shik; 05-11-2018 at 06:47 AM.
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Old 05-11-2018, 07:43 AM   #46
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Thanks Shik
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Old 05-11-2018, 09:55 AM   #47
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They have sound regulation because the track runs through multiple small towns for 24 hours granted its not lime rock where they'd send out heat seaking missles if you went over the sound limit but its understandable.
My best friend is stationed in Germany. Has driven the Nurburgring in his own STI he the track officials never mentioned anything about exhaust. You're going to verify where you heard that from.
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Old 05-11-2018, 11:42 AM   #48
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Am I the only one a little surprised to see them using a Dewalt cordless impact for the wheel change?
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Old 05-11-2018, 12:55 PM   #49
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Am I the only one a little surprised to see them using a Dewalt cordless impact for the wheel change?
Motion seconded...

Figure it'd at least be a Hitachi
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Old 05-11-2018, 01:07 PM   #50
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My best friend is stationed in Germany. Has driven the Nurburgring in his own STI he the track officials never mentioned anything about exhaust. You're going to verify where you heard that from.
This is a race, he is not "racing" hes on a paid toll road with a sports car, its a very different scenario. Tracks here in the states do it to.

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Am I the only one a little surprised to see them using a Dewalt cordless impact for the wheel change?
I see dewalt, makita and milwaukee stuff on overseas teams a lot. They might have a sponsorship of some sorts?
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