From road to rice (race?) in 10 minutes

[35R]

I am getting ready for the next State Supersprint round, so it's time to swap the AM wing back in. Below are some pics which demonstrate my setup with the Aermotions wing; mostly intended for my USA buddies (on another forum). Anyway thought i would post up on TC at home. Anyhoo i asked an auto electrician to wire it up such that i can swap an entire boot+wing out quickly and easily...

Obviously starting here:
http://www.forrestfamily.com.au/duncan/GTR/wiki/AMSwap/001.jpg

Unplug rubber grommet highlighted:
http://www.forrestfamily.com.au/duncan/GTR/wiki/AMSwap/002.jpg

I had my auto electrician patch in a plug here, shown disconnected:
http://www.forrestfamily.com.au/duncan/GTR/wiki/AMSwap/003.jpg

Get ready to unbolt the bootlid, place some cloth or towel on each side near the hinges as shown below, this will ensure you don't mark the trunk or bodywork. Also makes it a lot easier if doing this alone without help (i dont have any friends you see):
http://www.forrestfamily.com.au/duncan/GTR/wiki/AMSwap/004.jpg

Stocker bits removed:
http://www.forrestfamily.com.au/duncan/GTR/wiki/AMSwap/005.jpg

You can see below the Carbon bootlid fitted with plywood "feet" (makes it easy to store and avoid damage). Obviously remove these and transfer to the stocker item for storage later. You can also see the actuator setup here, my install was coped from Martins, thankyou very much:
http://www.forrestfamily.com.au/duncan/GTR/wiki/AMSwap/006.jpg

Bolt up carbon bootlid, carefully resting on towels (no friends etc.) & position hinges and secure. Make sure you're using towels it makes it so much easier and no damage...
http://www.forrestfamily.com.au/duncan/GTR/wiki/AMSwap/007.jpg

I had the auto electrician hook up wiring from the carbon trunk latch so i can simply plug it into the point disconnected from earlier. Connect it all up then give the latch a test run (using key) BEFORE we close the newly installed trunk/wing...
http://www.forrestfamily.com.au/duncan/GTR/wiki/AMSwap/008.jpg

Store away your stocker bootlid+wing! Grab some track tires, get to the track and smash some records!
http://www.forrestfamily.com.au/duncan/GTR/wiki/AMSwap/010.jpg

http://www.forrestfamily.com.au/duncan/GTR/wiki/AMSwap/011.jpg

http://www.forrestfamily.com.au/duncan/GTR/wiki/AMSwap/012.jpg

http://www.forrestfamily.com.au/duncan/GTR/wiki/AMSwap/013.jpg

http://www.forrestfamily.com.au/duncan/GTR/wiki/AMSwap/014.jpg

http://www.forrestfamily.com.au/duncan/GTR/wiki/AMSwap/015.jpg

Bring on Wakefield!

Did someone say 1:03's? do i hear a 1:02? nah.

[Kyle]

Saw this wing fitted up tonight.. Scared the shit outta me!

[GTS Listy]

Looks good and hopefully purposeful. Is the wing going to be worth that much time you think. Seems a small surface area and there is no lips lip like on other wings.
Good idea to swap the whole boot and wing idea. I used to beffore and after each race but I just leave the big wing on now as it seems part of the car. The supercar boot is lighter by some kg too.

Is it all automatic or can you manually adjust the amount it twists. Also is there any speed numbers on when the extra dowforce and braking comes into play. You have the GPS data so it will be great info to show gains on corners and under braking.

[35R]

Listy the wing has its own computer with inputs from the car speed sensor, and it has a g-meter etc built in. It automatically adjusts for straightaway, braking and turns. You can program it to. The aeromotions guys test their stuff in the MIT wind tunnel, there is some data on their website if interested. Does it work? I reckon it does, last time out at eastern creek i managed to lap 3.8 seconds faster, changes being: wing + slicks. So i don't think the slicks where responsible for almost four seconds alone (over re55's). I think the wing is good for at least a second of that. Tomorrow i am off to Wakefield Park to see how much quicker i can go than 1:04.0. I have run there before with slicks (and factory wing) so i should have a better idea by tomorrow night about how much gain the wing alone yields.

Heaps of records broken with this hardware, check it out

http://aeromotions.com/news

[taztassio]

Looks good and hopefully purposeful. Is the wing going to be worth that much time you think. Seems a small surface area and there is no lips lip like on other wings.
Good idea to swap the whole boot and wing idea. I used to beffore and after each race but I just leave the big wing on now as it seems part of the car. The supercar boot is lighter by some kg too.

Is it all automatic or can you manually adjust the amount it twists. Also is there any speed numbers on when the extra dowforce and braking comes into play. You have the GPS data so it will be great info to show gains on corners and under braking.

Of main importance would be the aerofoil design itself.

Where did you get a supercar boot from? is it a bolt in item?

[Muncha]

No hiding it thats for sure. :)

Whats the ruling with cams about using it in super sprints?

[35R]

No hiding it thats for sure. :)

Whats the ruling with cams about using it in super sprints?

yes approved by the nsw cams state supersprint panel (well before i acquired the kit).

there was some question about shedule f (cams) but given that i am basically under SV rules (unlimited mods) and that there are quite a few road cars with active aero (boxter, audi tt, and some other porsche cars) it is currently deemed ok.

Several people keep bringing up cams schedule f (fixed aero) so it is a bit ambiguous, expecially when it comes to road cars vs real race cars. I have permission to use it and i intend to do so whilst the nswssc rule makers allow it.

[GTS Listy]

Of main importance would be the aerofoil design itself.

Where did you get a supercar boot from? is it a bolt in item?

Just to answer the supercar boot is reinfoced and has some extra bits on it both internally and extrenally. There is some CF edge just below the wing. It has been changed a bit from the stock underneath and gutted a bit too. I got it with the wing when I bought it.
I guess this can relate but if you get some big speed down the straight at Bathurst etc will the CF boot support the downforce. Has that come up in any of the discussions on the forums etc.

Some pictures so you know what i mean about the boot. I dont mean to shoot the thread off topic Dunc.

http://i277.photobucket.com/albums/kk77/HSVListy/Newrearwing007.jpg

http://i277.photobucket.com/albums/kk77/HSVListy/Newrearwing002.jpg

http://i277.photobucket.com/albums/kk77/HSVListy/Newrearwing006.jpg

http://i277.photobucket.com/albums/kk77/HSVListy/Newrearwing001.jpg

http://i277.photobucket.com/albums/kk77/HSVListy/Cageandwinginstalled006.jpg

[35R]

Listy,

happy to report the wing went well today, very well. Addition of the wing yielded 1.2 second advantage for a 1:02.8, which i am sure is some sort of record for a road car, albeit on slicks.

[GTS Listy]

Listy,

happy to report the wing went well today, very well. Addition of the wing yielded 1.2 second advantage for a 1:02.8, which i am sure is some sort of record for a road car, albeit on slicks.

No doubt some record with a car with rego plates. Dam fine to see proof that the mod worked. Nice prediction too as noted earlier too

You will have to start saying 62 seconds for a lap now. Very small list of people in the 62s around there.

[NickS]

Listy,

happy to report the wing went well today, very well. Addition of the wing yielded 1.2 second advantage for a 1:02.8, which i am sure is some sort of record for a road car, albeit on slicks.

:shock: ... holy shit, that's just insane!

You must be stoked mate, well done ... how the hell do you keep going quicker!

:bow:

[aussie372]

Well done Dunc.. You just seem to be getting quicker every time you hit the track .. Keep up the good work..
cheers mark

[god084]

1.02 bracket! Wow very impressive! Amazed it made such a difference on Wakey!

[35R]

:shock: ... holy shit, that's just insane!

You must be stoked mate, well done ... how the hell do you keep going quicker!

:bow:

Nick no magic just good hardware (new aeromotions wing and slicks) good preparation and a bit of opportunity (thanks to the evo-oz for organising the day today). That time is on par with the porche cup record. With some more power (e85 +45awkw) and decent suspension/setup the thing will do 1:01's around there, amazing for a 1700kg+ road car. Probably 400kg heavier than a porsche cup car or v8sc. I am quite flabbergasted the car is capable of this performance. And what a ride, unbelievable.

[lautray]

Well done man. Any footage?

Edit: Don't forget to change your sig with the new pb ;).

[Barney]

WOW, the wing made that much of a difference. Congrats on the lap record

Interesting to look at the wing mounts, thanks for posting the pics!!

I am in the process of mounting a wing onto my IP Silvia. Many people are saying I should have done it along time ago as it will make a massive difference to the handling. This makes sense as rear grip is a problem from turn in to exit.

I'm still not sure on how to make the mounts and uprights thou

Ash

[35R]

Well done man. Any footage?

Edit: Don't forget to change your sig with the new pb ;).

Some in car

Gw9DTiuG6Cg

And natsoft times:
http://www.natsoft.com.au/cgi-bin/results.cgi?04/04/2010.WAKE.S6.Y

(times user "Marek+1")

[lautray]

Tidy work indeed man :bravo:.

Nothing like being quick & consistent.

[Kyle]

Don't lie Dunc.. It was the makita impact wrench that got you the 1.029 hahah

As I said in sms well done mate!!! See you at down there in Nov!

[DaveHAT]

Holy snappin' duckshit Dunc ... congratulations. :bravo:

That some seriously fast pedalling ... you're absolutely gunna eat that Bathurst hillclimb. :)

[R100 Sports Sedan]

:giveup: :giveup:
Wow, thats great Duncan, think the rest of the Supersprint boys mays well give up trying to catch you.
With more and more R35 getting on the track in Oz, wonder when some will build a full on R35 track car or Sports Sedan just think on the lap times the car could do fully gutted and more power.
Look foward to the next round :cheers:

[DRE]

That's moving! Good driving Dunc.

[lee ls1]

thats one quick car you got there mate, good job!

[god084]

consistent 1.02.90! That is very impressive! You have got it down to a fine art

[ShylanMotorsport]

Must of been that wheel alignment??????

:hide:

[UT.WRX]

Well done mate! looking forward to seeing it in action at round 3.

[WOMBIE]

Nicely done Dunc :cool:

[Duffman]

Now that's a serious looking bit of kit. Great results too.

Dare I ask, what's next on the to-do-list?

[Kyle]

Now that's a serious looking bit of kit. Great results too.

Dare I ask, what's next on the to-do-list?

1. Strip all excess fat
2. Fit up epic roll cage
3. ?????
4. Winnar!!!

[BOMI]

Very impressive addition to the car mate and the times, WOW, great work Dunc.


Troy :)

[choppo]

Sorry to bring up an ol thread, buuuttt im onto this wing thing ATM. Any aero engineers looking on please post!!!!

1stly, out of interest Dunc, is there anyway you can get a log of wing attack angle vs. speed?? What is the max/min angle it goes??

2ndly - here is my butt in bit.. (help needed by tech nuts here)... for the purpose of my question, say Dunc's wing was at a fixed angle..... now, what happens if you get the 'two vertical side bits' (LOL cant remember the name of the buggers) and taper them IN toward the rear. So the shape of the wing gets narrower as it progresses to the rear? i.e. generally follows the shape of a rounded rear end car and goes from a long rectangle to a long trapezium. The air will obviously speed up, but is that good/bad/ruins the entire wing???? I can't see it being too flash as all wings would be like that on all V8SC... technical input much appreciated!

[35R]

1stly, out of interest Dunc, is there anyway you can get a log of wing attack angle vs. speed?? What is the max/min angle it goes??


Chop

The only speed vs wing angle relationship with my wing relates to "straightaway" mode. At about 180km/hr (assuming no lateral G) the wing will go to "zero" degrees, to reduce drag Otherwise it is set to about 5 degrees for maneuvering, and 7* for braking. Engaged by a separate computer/g-meter. Unless you are referring to the amount of downfoce at a given speed and angle? I have a chart on that somewhere.

Maximum angle the AM wing can be set at is about 14* where it would ordinarily "stall" or start having a reduction in (reverse) lift. However because air comes off the back of the r35 roof at about 7* ifself, we only set the wing angle to (a maximum of) 7* to achieve the aggregate of 14* max desired. Yes we can go more than 7* (+7*) but it will ultimately result in a reduction of (reverse) lift, i believe. These numbers are specific to the GTR. They are super secret, please dont post on the interweb. You would need to work out these numbers for whatever car you are looking at.

Can't help with the winglets or whatever they are called, i believe they merely are there to look cool :) Actually i have read they help to smooth the airflow and enhance lift.

[choppo]

Unless you are referring to the amount of downfoce at a given speed and angle? I have a chart on that somewhere.
I'd be real interested in that. Can email it? I know its a different car, but id really like to see the chart?