[MindlessOath]

Read some of the story - Aerodynamics of the Nissan R35 GTR
The challenge for the designers of the Nissan R35 GTR was to create a car that drew on lessons learned from the development of the successful Nissan Le Mans prototypes, and to apply this to the new GTR. Yoshi Suzuka was on the design team and explains how this was achieved.
http://www.suzukaracing.com/GTR%20page/newpagegtr.html
View attachment racetoroadgtr.pdf

Read the whole story in 24 HOUR Race Technology (Vol.3) magazine
As of November 2009, no other car matches this performance.
The new 2009 Toyota Prius has lowered the Cd value to 0.25 and the new 2009 Honda Insight has 0.28 with zero lift or negligible lift.
The electric three wheeler Aptera has a mere 0.15 Cd value but lift value is not announced.
If you increase the tire width, the Cd value goes up instantly.
The Prius and Insight use 175-185mm wide tires while GTR is equipped with very wide 285mm tires.
If you try to modify dangerous lift force to downforce, usually the drag value will jump up significantly.
So what is the secret to make the traditional 4 seater Grand Touring car style GTR have such low Cd with front and rear downforce?
Freelance aerodynamicist Yoshi Suzuka explains the secret and development story in
24 HOUR Race Technology (Vol.3) magazine.

500km/h GT-R... This is in the PDF posted above...
Yoshi Suzuka is a freelance automotive aerodynamicist who
started his career in race car engineering in 1968 after obtaining
an MSc degree in mechanical design. He later became a fulltime
aerodynamicist. Since then, Suzuka has created many successful
race cars in IMSA GTP, Indy car, Le Mans car and GT car fields
and the Nissan GTR is his first production car. He is also involved
in a project to develop a 500 km/h world speed record Nissan
GTR. Alongside four factory Nissan R90CKs and two R89Cs,
Suzuka's Group C Nissan R90CP qualified 3rd on the grid at Le
Mans in 1990 finishing 5th, the highest place finisher of any of the
Nissan entries that year.
And this link on his site was for a 350Z... im guessing he changed his mind after the R35 released... He might still be looking for funding?
http://www.suzukaracing.com/GTR%20page/5%20F-5%20.html

 

[tyndago]

I emailed Suzuka about a project I am working on. Looking at his pictures, seems like he has a real car guy background. Electramotive - IMSA Nissan GTP car stuff. Can Am.

 

[MindlessOath]

i found these on http://www.mulsannescorner.com/newsmarch11.html
These days Yoshi is enjoying his retirement. But he isn't sitting still. Yoshi has been working on a Office Size scale wind tunnel. Yes, it's about the size of a small cat carrier and accepts 1/24 scale models, and it will even measure front and rear lift forces as well as drag.

Now some people are going to immediately scoff at this. But watch the videos, Yoshi has made a 5 part video series that shows the model functioning and him working through a test case. Understand that Yoshi doesn't make any claims that the data is accurate to full scale, simply that the trends are accurate. Yoshi used 1/7 scale models for the Nissan IMSA GTP program and designed and built NPTi's wind tunnel. According to Suzuka, he was able to achieve 2% and 4%, drag and downforce respectively, correlation to full scale with this tiny windtunnel. This being the closest correlation to full scale in any of the 14 wind tunnels he used throughout his 35+ year career. And the Nissan GTP program achieved results, so Suzuka must know a thing or two about what he's up to with his Office Size wind tunnel.

part1 http://www.youtube.com/watch?v=mpMOpyLbjcA...feature=related
part2 http://www.youtube.com/watch?v=E1IIMFOFpjU...feature=related
part3 http://www.youtube.com/watch?v=Ww29IAN6neM...feature=related
part4 http://www.youtube.com/watch?v=DpzRPfd9XkM...feature=related
part5 http://www.youtube.com/watch?v=EYmsFAGXn-A...feature=related

 

[MindlessOath]

WICKED! DUCKBILL R35 TRUNK!!!!

 

[MindlessOath]

any comments? any vendors using this data or calling Yoshi Suzuka for aero development? anyone have any idea's for parts to help on track performance? anyone see the duckbill trunk on the R35 and really liked or disliked it? (video5 iirc).

 

['Q]

This is very informative. Thank you for the great post!

 

['Q]

any comments? any vendors using this data or calling Yoshi Suzuka for aero development? anyone have any idea's for parts to help on track performance? anyone see the duckbill trunk on the R35 and really liked or disliked it? (video5 iirc).

Just saw the duckbill trunk, its made by RevoZport and it looks great! I like how the trunk is raised up a bit from the sides like the stock hood and also has the same lines. A vendor here is working on one but i am not sure if it will look exactly like the one in the video.

I contacted them for pics and price. If they send me details, i will start a group buy thread.

Thank you MO, i've been patiently waiting for a duckbill!

 

[seanm]

any comments? any vendors using this data or calling Yoshi Suzuka for aero development?

With a customer, we have been emailing him back and forth on a project. Leave it at that right now.

 

[Skyliner]

He is also involved in a project to develop a 500 km/h world speed record Nissan GTR. I 'll be damned! 500 kmh = 310 mph !!!

I wish him wholeheartedly to achieve that! Who doesn't want to see a GTR beating the Veyron SS by over 40 mph = 65 kmh ????

The question is how much power is he going to need? 2000 whp maybe? Bloody hell that's exciting!

 

[MindlessOath]

With a customer, we have been emailing him back and forth on a project. Leave it at that right now.

That's got to be a high end project and I can't wait to hear more when you guys get done.

 

[seanm]

That's got to be a high end project and I can't wait to hear more when you guys get done.

Right now, its just in the planning stages. Trying to source some things that are difficult to source.

 

[gixxer_drew]

Hello, my name is Andrew Brilliant I am an Aerodynamicist based in Japan.

I am the designer of the HKS / GT Auto Garage GTR down in australia: http://www.worldtimeattack.com/index.php/p...agehks-r35-gtr/

When I was working on the GT Auto Garage car it was my first chance to look in depth at the R35 aero. Its really quite impressive work that was done. I am working on a project now with Suzuka san and I think he is one of the most gifted aerodynamicists of an era. Nissan did the right thing to bring him in.

Stay tuned for this years world time attack! http://speedhunters.com/archive/2011/06/20...n-r35-gt-r.aspx

i found these on http://www.mulsannescorner.com/newsmarch11.html
These days Yoshi is enjoying his retirement. But he isn't sitting still. Yoshi has been working on a Office Size scale wind tunnel. Yes, it's about the size of a small cat carrier and accepts 1/24 scale models, and it will even measure front and rear lift forces as well as drag.

Now some people are going to immediately scoff at this. But watch the videos, Yoshi has made a 5 part video series that shows the model functioning and him working through a test case. Understand that Yoshi doesn't make any claims that the data is accurate to full scale, simply that the trends are accurate. Yoshi used 1/7 scale models for the Nissan IMSA GTP program and designed and built NPTi's wind tunnel. According to Suzuka, he was able to achieve 2% and 4%, drag and downforce respectively, correlation to full scale with this tiny windtunnel. This being the closest correlation to full scale in any of the 14 wind tunnels he used throughout his 35+ year career. And the Nissan GTP program achieved results, so Suzuka must know a thing or two about what he's up to with his Office Size wind tunnel.

part1 http://www.youtube.com/watch?v=mpMOpyLbjcA...feature=related
part2 http://www.youtube.com/watch?v=E1IIMFOFpjU...feature=related
part3 http://www.youtube.com/watch?v=Ww29IAN6neM...feature=related
part4 http://www.youtube.com/watch?v=DpzRPfd9XkM...feature=related
part5 http://www.youtube.com/watch?v=EYmsFAGXn-A...feature=related

 

['Q]

Hello, my name is Andrew Brilliant I am an Aerodynamicist based in Japan.

I am the designer of the HKS / GT Auto Garage GTR down in australia: http://www.worldtimeattack.com/index.php/p...agehks-r35-gtr/

When I was working on the GT Auto Garage car it was my first chance to look in depth at the R35 aero. Its really quite impressive work that was done. I am working on a project now with Suzuka san and I think he is one of the most gifted aerodynamicists of an era. Nissan did the right thing to bring him in.

Stay tuned for this years world time attack! http://speedhunters.com/archive/2011/06/20...n-r35-gt-r.aspx

Hey Andrew, welcome to the forum! It's great to have people like you over here. The time attack GTR you guys are working on is insane, I love it.

Did Suzuka San start working on the 500km/h GTR project?

 

[NickTO]

 

[DocNrock]

Welcome, Andrew.

Brent

 

[jaspergtr]

500km???? Holy hell.

If that technology trickles down to the next gen GT-R, the books will be rewritten... again.

 

[seanm]

Hello, my name is Andrew Brilliant I am an Aerodynamicist based in Japan.

Welcome to the forum.

500km???? Holy hell.If that technology trickles down to the next gen GT-R, the books will be rewritten... again.

500 km/hr GT-R

The 500 km/hr project is a Bonneville project that was suggested by Suzuka.

 

[MindlessOath]

Welcome to the forum.

500 km/hr GT-R

The 500 km/hr project is a Bonneville project that was suggested by Suzuka.

I sure hope someone will fund this project! it would be amazing!

welcome Andrew Brilliant. your build is very interesting. i have read many of the comments on your project and i hope things go better than whats suggested. your aero looks very good, love the render too. best of luck! It will be very cool to see the two heavily modded R35's competing against each other!

 

[Glenn]

This thread is quite a coincidence for me. This past Saturday, I was at the ZONC (Z owners of NorCal) car show in Brisbane, California and ran into the owner (with the baseball cap and blue jacket) of this famous AMS Alpha 9 GTR. I forgot the gentleman's name, but he himself said he had 48 years of racing experience himself and was working with someone in Japan who worked on the aero of the R35 GTR. He had worked with this person in Japan on prior race projects in his career and now was working on a Bonneville Salt Flats spreed project so that he could check that off of his bucket list. What a cool gentleman. He said his sons are employed in the race community and either still work or use to work on the Newman-Haas CART team and that his boys would be helping out on the project. That blue jacket he is wearing is a Newman-Haas team jacket.


Untitled by gnakata2007, on Flickr


Untitled by gnakata2007, on Flickr


Untitled by gnakata2007, on Flickr

 

[gixxer_drew]

Thank you everyone for warm welcome.

This thread is quite a coincidence for me. This past Saturday, I was at the ZONC (Z owners of NorCal) car show in Brisbane, California and ran into the owner (with the baseball cap and blue jacket) of this famous AMS Alpha 9 GTR. I forgot the gentleman's name, but he himself said he had 48 years of racing experience himself and was working with someone in Japan who worked on the aero of the R35 GTR. He had worked with this person in Japan on prior race projects in his career and now was working on a Bonneville Salt Flats spreed project so that he could check that off of his bucket list. What a cool gentleman. He said his sons are employed in the race community and either still work or use to work on the Newman-Haas CART team and that his boys would be helping out on the project. That blue jacket he is wearing is a Newman-Haas team jacket.


Untitled by gnakata2007, on Flickr


Untitled by gnakata2007, on Flickr


Untitled by gnakata2007, on Flickr

Newman Haas is in IRL now, there is no more CART. Motorsports is a really small world sometimes.

A lot of guys get older and want to get out there to Bonneville, its a great hobby and full of good people. The salt is hallowed ground for sure.