Welcome to the North American Subaru Impreza Owners Club Tuesday April 24, 2018
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC General > Motorsports

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 03-27-2018, 10:58 AM   #26
torquemada
Scooby Guru
 
Member#: 128484
Join Date: Oct 2006
Chapter/Region: International
Location: Germany
Vehicle:
2006 EDM WRX STI
WRB

Default

Quote:
Originally Posted by Shik View Post

Light-up Subaru emblem ?

https://www.japanparts.com/parts/detail/51397
* Registered users of the site do not see these ads.
torquemada is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 04-11-2018, 09:30 AM   #27
Shik
NASIOC Supporter
 
Member#: 132
Join Date: Jul 1999
Chapter/Region: Tri-State
Location: Central PA
Vehicle:
2006 GT Ltd 5spd sdn
'15 WRX 6spd CWP, '02 WRX

Default

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.





Shik is offline   Reply With Quote
Old 04-15-2018, 09:17 AM   #28
CtStig
Scooby Newbie
 
Member#: 421108
Join Date: May 2015
Location: Hamden, CT
Default

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.
CtStig is offline   Reply With Quote
Old 04-15-2018, 11:28 AM   #29
engineered2win
Scooby Newbie
 
Member#: 458858
Join Date: Nov 2016
Location: Hilliard, OH
Vehicle:
2017 WRX
Lapis Blue

Default

Quote:
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, ?)

Last edited by engineered2win; 04-15-2018 at 11:37 AM.
engineered2win is offline   Reply With Quote
Old 04-16-2018, 07:57 AM   #30
Homemade WRX
Scooby Guru
 
Member#: 33782
Join Date: Mar 2003
Chapter/Region: MAIC
Location: Mooresville, NC
Vehicle:
96 3MI Racing LLC
search FIRST, then PM!!!

Default

Quote:
Originally Posted by engineered2win View Post
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.
Homemade WRX is online now   Reply With Quote
Old 04-16-2018, 08:31 AM   #31
CtStig
Scooby Newbie
 
Member#: 421108
Join Date: May 2015
Location: Hamden, CT
Default

Turns out that the qualifying run was cut short by a transmission problem, per Carlo Van Dam.....
CtStig is offline   Reply With Quote
Old 04-16-2018, 09:15 AM   #32
Bansheeboy11
Scooby Specialist
 
Member#: 182415
Join Date: Jun 2008
Chapter/Region: Tri-State
Location: New York
Vehicle:
1999 RS
Aspen White

Default

Does STI have their own stream for quali?
Bansheeboy11 is online now   Reply With Quote
Old 04-16-2018, 10:17 AM   #33
Homemade WRX
Scooby Guru
 
Member#: 33782
Join Date: Mar 2003
Chapter/Region: MAIC
Location: Mooresville, NC
Vehicle:
96 3MI Racing LLC
search FIRST, then PM!!!

Default

^^^I'd love to watch that.
Homemade WRX is online now   Reply With Quote
Old 04-16-2018, 01:29 PM   #34
CtStig
Scooby Newbie
 
Member#: 421108
Join Date: May 2015
Location: Hamden, CT
Default

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.
CtStig is offline   Reply With Quote
Old 04-16-2018, 01:57 PM   #35
Bansheeboy11
Scooby Specialist
 
Member#: 182415
Join Date: Jun 2008
Chapter/Region: Tri-State
Location: New York
Vehicle:
1999 RS
Aspen White

Default

They always do for the race, i couldnt find anything for today
Bansheeboy11 is online now   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

All times are GMT -4. The time now is 08:38 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2018 Axivo Inc.
Copyright ©1999 - 2017, North American Subaru Impreza Owners Club, Inc.