Spoiler Data

Post by **maxnix** » Thu Jul 25, 2002 9:42 am

OK, I've got a dumb question.

Has anyone ever seen any data on the spoilers for the t models of the 90-96 Q, or other Infiniti cars?

It looks as if it would reduce lift at speed and Infiniti is not known for fake hood scoops and useless stuff like that. Still, I have never seen anything in print nor a reference to the effect of these devices at speed.

I do like how it moves the CHM brake light out of the rear window view and gives a visual reminder to where the car is when backing.

Post by **Mayhem_J30** » Thu Jul 25, 2002 9:42 am

i'm not sure about lift but it seems to have a great deal to do with drag when dealing with the G35. can't remember which magazine but it was in one of the car & driver triads, it had an awesome aerodynamics article. it was several pages long, but very informative. spent a lot of time analyzing irl cart aerodynamics. but for your question, no, sorry.

Post by **DenverQ** » Thu Jul 25, 2002 9:42 am

I asked this question a long time ago in the yahoo club and Dennis informed me (what i can remember) that it creates about 20lb of downforce at about 120mph (I think i could be wrong)

Post by **maxnix** » Thu Jul 25, 2002 9:42 am

Tory,

Thanks. I missed that post. That figure sounds about right as I would assume (a.s.s.u.m.e) that its design is to reduce drag and cancel lift at higher speeds than it is to produce downforce at higher speeds.

Guess I'll have to find a place to test it. Never broke 115, yet.

Post by **maxnix** » Thu Jul 25, 2002 9:42 am

Chris,

The G35 Aero package is a whole 'nother deal and definitley does the trick for high speed stability if reports and Nissan corporate claims are accurate.

Good to see this available. Now for a new Q based on a new President.

Post by **PalmerWMD** » Thu Jul 25, 2002 9:42 am

In order to reduce the lift with down force that force has to come from somewhere.

It comes from extra drag (fine by me)

Fred...

Post by **maxnix** » Thu Jul 25, 2002 9:42 am

Fred,

That's probably a good point.

So are t models slower but safer at 120+ mph speed?

Sure wish there was data on this outside of Nissan.

Post by **PalmerWMD** » Thu Jul 25, 2002 9:42 am

Max:

That's probably tru but the effect with such a small and clean spoiler as the factory one, is is probably very small when it come to additional drag.(The aerodynamics on the base model are actually pretty good.)

It's diffcul to predict how much of an impact on top speed the factory spoiler has ( 1mph?, 3 mph? half a mph?)

My current spoiler is quite a bit larger than factory, so I might actually take it off if I ever run the Silver State.

Fred...

Post by **Mayhem_J30** » Thu Jul 25, 2002 9:42 am

20 lbs is hardly worth it. just think race cars are producing enough negative lift to keep them suctioned to the top of a ceiling. you might as well throw some books in your trunk...j/k. i'd personally be more interested in less drag for better mpg. rarely will i be doing 100+mph and going in a direction besides straight. :icesangel

Post by **DenverQ** » Thu Jul 25, 2002 9:42 am

Im thinking that the T models are rare I have never seen another 94 t and Ive always wondered if the HICAS and Swaybar and spoiler are really the only differences anyone else have ideas?

Post by **AZhitman** » Thu Jul 25, 2002 9:42 am

I'd venture to guess that the T spoiler has absolutely NO effect within the 160 mph range of the Q. I believe it is solely an appearance item (albeit a very attractive one).

I do notice that it alters the airflow behind the car differently than the non-spoilered Q. How do I know? My rear bumper top is always covered in a thin layer of dust, whereas I've noticed the non-T Q's don't have this problem.

Kind of like why GM put the little aluminum louver/wing on the rear roof of the 1988-1992 Suburbans - the rear window was collecting dust and dirt.

I just keep a bottle of detail spray and a soft washcloth in the trunk and wipe it down between washes.

Post by **maxnix** » Thu Jul 25, 2002 9:42 am

Tory,

I think the steering ratio is faster than the standard's.

Post by **lonallenq45** » Thu Jul 25, 2002 9:42 am

I heard the tighter steering ratio was on all 90-93s. Someone posted on the Yahoo board many moons ago (might have been Q45Tech) that the steering ratio changed in 94.

Lon

Post by **greg_atlanta** » Thu Jul 25, 2002 9:42 am

The aero kit on the G35 reduces drag from .27 to .26 (spoiler and underbody stuff).

What's funny is that the drag coefficient on the new 350Z is .30, higher than the larger, taller G35.

Post by **maxnix** » Thu Jul 25, 2002 9:42 am

Lon, you are correct that the earlier non-grille Gen 1 Qs had the lower numeric (faster) steering ratio. My comment should only apply to the 94-96 grilled versions of Gen1.

Greg (ATL), a longer car (think teardrop) is a better shape for low drag than a shorter car (think brick or plate going broad face into the wind), all other things being equal (which they never are). The longer car gives the airstream a chance to re-attach to the laminar flow area at the end of the car. Notice the special extended tails on the Le Mans only bodies of the high speed prototypes of the past. The extra length allowed the reduction in drag, crucial in maximizing the top speed on the long straights (Mulsanne was 3 mi. in the old days, before the chicane was introduced).

Spoiler Data

Spoiler Data

Yahoo posts

G35 Aero

Spoiler = greater drag?

t differences

Steering ratios and drag

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