FnF 6 GTR - Ben Sopra X SP Engineering

[louis110]

I'm liking this so far...

Everyone's favorite Japanese-built supercar killer will be featured in the upcoming "Fast 6" action blockbuster.
Who doesn't love themselves a good dose of Nissan GT-R loving on a Sunday morning? We thought so and to help your weekend end well before the hectic work week gets underway, we managed to come across these photos and video showcasing the tuned GT-R that will be featured in "Fast 6", the latest installment of the popular "The Fast and the Furious" film series. The body kit includes carbon doors, door sills and trims as well as an engine cover and cooling panel. There's even a carbon trunk and roof. Inside there's a new steering wheel as well.

Underneath the hood, the car's cooling system was redesigned along with a new ECM calibration and the brakes have been upgraded as well. Exact power figures haven't been released, but just listening to the car testing on the dyno is good enough for now. "Fast Six" is due to arrive in US theatres on May 24th.

[sb119]

Never used to like this kind of thing...too over the top but lately the Ben Sopra type body work is starting to grow on me. Sounds awesome though.

[bellis_GTR]

Sexy, wonder what kind of blue.

[326_godzilla]

Its like a matte bayside blue, i like it.

[JZ]

Never liked the kit before but that surf line in the rear wheel well (a la Hakosuka) is pretty classy

[Voodoo_ChildR32]

I've seen a write-up on this GTR before. IIRC, it is Plasti-dipped to give it that matte finish. If I can find the write-up I'll throw it up here.

[MarusGTR]

I'll just leave this here and slowly walk away backwards

PS: Before I get my windows blown out by shotgun fire I'm referring to the fins; form over function. They're useless and tacky. Car would of looked more refined and well thought out without them.

[ColinR33]

Aaaahhh! Kill It! Kill it with fire!

I'll just leave this here and slowly walk away backwards.

[Phastwon]

Not a fan of the look.

[Skym]

I Like (Blue R35GTR).

Rear spoiler mounted to bottom of trunk and venting for air in archways to improve downforce. Basically copying JGTCC, SuperGT, DTM? racecars.

If you think those side fins are bad, should look at Audi's A4 DTM racecar -

http://www.fourtitude.com/news/uploads/Motorsport_News/new_dtm.jpg

[MarusGTR]

I Like (Blue R35GTR).

Rear spoiler mounted to bottom of trunk and venting for air in archways to improve downforce. Basically copying JGTCC, SuperGT, DTM? racecars.

If you think those side fins are bad, should look at Audi's A4 DTM racecar -

http://www.fourtitude.com/news/uploa...ws/new_dtm.jpg

That's irrelevant and misinformed. I can tell you this GTR has 0 aerodynamic or engineering foresight, it's just some graphical artist that put together something that looked good. First, the position of the spoiler at the bottom of the bumper is typically set to maximize the distance between rear wheels (the pivot point) and the downforce generated; basically it's set as to increase the moment radius from a perpendicular standpoint (facing the wheels). Sure, but here the shape of the arms is too convoluted and the holes are placed more as an afterthought that actually trying to reduce weight and/or change strain flow. The second wing at the same level than the trunk cannot create any downforce as it's in a low pressure wake zone.

The fins are straight and too smooth to create any downforce; how could you possibly think it would generate downforce if flow couldn't even get any effective friction/wetted area? The exposed surface is too narrow and straight. It's lost drag.

And I love the DTM design.

EDIT: From the same logic, the front fenders of that... thing I posted would be warranted because GT500 GTRs have been using vented fenders since the late 90s JGTC days.

EDIT EDIT: A properly engineered GTR:



EDIT EDIT EDIT: Is my engineer showing?

[Skym]

That's irrelevant and misinformed.

Just pointing out where the idea's came from (even if not done correctly). When I mean bad, I meant crazy looking.

I can tell you this GTR has 0 aerodynamic or engineering foresight, it's just some graphical artist that put together something that looked good.

I agree that it was designed by a designer. But probably by a car designer without any wind tunnel testing, as the arch venting design is wrong on rear, etc.

First, the position of the spoiler at the bottom of the bumper is typically set to maximize the distance between rear wheels (the pivot point) and the downforce generated; basically it's set as to increase the moment radius from a perpendicular standpoint (facing the wheels). Sure, but here the shape of the arms is too convoluted and the holes are placed more as an afterthought that actually trying to reduce weight and/or change strain flow.

Basically saying the stays for rear spoiler are further back than they should be and at bottom of trunk (should be over rear wheels or close to and sticking out of trunk lid).

But in saying that a similar design (not the same) to above R35GTR that's shown in this thread has been used on a unlimited V8 supercar that's 2 sec per lap off a open wheel racecar on same racetrack (Hampton Downs). It runs similar laptime to a tube frame TVR with mounts that are closer to being above the rear wheels. So both designs seem to work and produce similar result's. Also the V8 supercar has holes / slots in the stays for rear spoiler.

Here's the unlimited GT1 V8 supercar (55.65 at Pukekohe) -

http://www.youtube.com/watch?v=P3ibMAivacc

Here's the 55.65 lap (anything under 1 minute is quick at that racetrack) -

http://www.youtube.com/watch?v=RiTMEIY2OZA

Here's the V8 GT1 TVR Tuscan that it races against (55.4 at Pukekohe) -

http://www.youtube.com/watch?v=6fpiCdtrOL8

To compare, GT1 R32GTR laps as fast as 58sec (still running stock doors, so can drop 70kg or so of weight) and Gibson Group-A GTR is just over 1 minute at Pukekohe, Misubishi EVO 1 at 58 sec (owned, driven by same person who owns the unlimited V8 supercar), so both the TVR Tuscan, unlimited V8 supercar are quick.

The fins are straight and too smooth to create any downforce; how could you possibly think it would generate downforce if flow couldn't even get any effective friction/wetted area? The exposed surface is too narrow and straight. It's lost drag.

Thought it was bad / crazy looking. But thank you for sharing the engineer side to it (interesting).

And I love the DTM design.

It's a interesting design.

EDIT: From the same logic, the front fenders of that... thing I posted would be warranted because GT500 GTRs have been using vented fenders since the late 90s JGTC days.

EDIT EDIT: A properly engineered GTR:

http://www.gtrblog.com/wp-content/up...season-009.jpg

I think the slotted vented front fender idea, maybe rear spoiler idea came from Nissan R390 GT1 Lemans racecar. Reusing old design's that worked.

EDIT EDIT EDIT: Is my engineer showing?

Maybe.

But seriously it's good info.

[MarusGTR]

Basically saying the stays for rear spoiler are further back than they should be and at bottom of trunk (should be over rear wheels or close to and sticking out of trunk lid).

But in saying that a similar design (not the same) to above R35GTR that's shown in this thread has been used on a unlimited V8 supercar that's 2 sec per lap off a open wheel racecar on same racetrack (Hampton Downs). It runs similar laptime to a tube frame TVR with mounts that are closer to being above the rear wheels. So both designs seem to work and produce similar result's. Also the V8 supercar has holes / slots in the stays for rear spoiler.

Oh definitely, applied correctly the spoiler position could have its perks. Like I said since you increase moment radius that basically artificially shifts the center of gravity towards the back. This is also why rally cars tend to put spoilers closer to the rear wheels as you're not prone to lift the front off the ground if you lose downforce or get a sudden weight shift but still get more force (which is expelled as friction force) on the tires.

Anyway to get what I mean about downforce balance just look at what happened to the CLK GTR in the 1998 Lemans (IIRC).

Thought it was bad / crazy looking. But thank you for sharing the engineer side to it (interesting).

Crazy yes but I admire function over form. I didn't mean to belittle your tastes, it's just that your example of the DTM fins was night and day; the DTM fins were probably made through some procedural CAD method and their width makes them actually able to catch some of the kinetic wake energy and use it as downforce.

I think the slotted vented front fender idea, maybe rear spoiler idea came from Nissan R390 GT1 Lemans racecar. Reusing old design's that worked.

I have no issues with vented fenders, don't get me wrong. Just needs to be used appropriately.

But seriously it's good info.

Bah not really, just think of it as an engineer that has too much time on his hands and no little means of actually producing what he aspires. Any condescendence was unintentional. I could be wrong too, I don't have any empirical background (but fluids and thermodynamics are my speciality). My opinion should be taken with a grain of salt.

You're still the king of know it alls don't worry about that lol (thanks for the supercars link btw)

[Skym]

Oh definitely, applied correctly the spoiler position could have its perks. Like I said since you increase moment radius that basically artificially shifts the center of gravity towards the back. This is also why rally cars tend to put spoilers closer to the rear wheels as you're not prone to lift the front off the ground if you lose downforce or get a sudden weight shift but still get more force (which is expelled as friction force) on the tires.

I get what you mean, like putting a big rod out the back and leaning on that and the front lift's. I guess it makes sense why the unlimited V8 supercar had the front bumper modifications (for more downforce on front).

Anyway to get what I mean about downforce balance just look at what happened to the CLK GTR in the 1998 Lemans (IIRC).

That car was famous for it's big flip. I thought that was due to the air getting under car (flat bottom), but I guess the front had to lift for that to happen.

Similar to what happened to Nissan's flat bottom Nissan R90Ck Lemans racecar in 1991 when it blew a tyre at I think was Fuji racetrack. Nearly hit another car that exited racetrack. Amazed that the driver walked away from that crash.

Here's the R90CK crash -

http://www.youtube.com/watch?v=bxlBc1OSVek

Crazy yes but I admire function over form. I didn't mean to belittle your tastes, it's just that your example of the DTM fins was night and day; the DTM fins were probably made through some procedural CAD method and their width makes them actually able to catch some of the kinetic wake energy and use it as downforce.

No offence taken. I understand what you mean.

I have no issues with vented fenders, don't get me wrong. Just needs to be used appropriately.

An interesting design was done on this R32 GTS-T racecar via cutting the bottom of doors away (didn't widen the front fenders) -

http://ljracing.co.nz/

It's similar to the R35GTR design. I wonder if it works (big enough gap in back of front fender, etc)????

Bah not really, just think of it as an engineer that has too much time on his hands and no little means of actually producing what he aspires. Any condescendence was unintentional. I could be wrong too, I don't have any empirical background (but fluids and thermodynamics are my speciality). My opinion should be taken with a grain of salt.

You come across as knowing what you are doing. Didn't take offence to what you said. It's interesting reading other peoples opinions, as sometimes you learn something new.

You're still the king of know it alls don't worry about that lol (thanks for the supercars link btw)

Thank you for the kind words, but I don't know that much. They are just things I pickup from people that do know what they are doing. You're welcome.

[MarusGTR]

You're probably right about the air catching under before takeoff, that's what they say had happened, but I can see the subsequent flips being caused by the rear spoiler.

Interesting design for the GTS, I'm always contemplating track oriented widebody designs that I'd like to implement on my own GTR.

Jig the chassis, get a full cage chassis in with maybe some carbon floor rails, cut most of unibody out, redone engine bay, custom hood, redone front end, custom wide doors, vented fenders, wide rear quarters. Keep the stock GTR spoiler for nostalgia but add slide-adjustable lip. Side swept exhaust.

Now that would be something. Give me a job to make it happen people :P