rotary#10

iTrader: (38)

I wonder what are the ways to improve the FC's wind breaking ability? No im not talking about farting. Im talking about cutting thru the air or aerodynamic. ( Since we all have forums on intakes , exhaust, turbos, engine mods why not for the body? )

Any suggestions ? aero package from s4 ? Lowering springs ? Flush underpans or trays ? I want to see what the 7club knows.

No_love_for_pistons

iTrader: (4)

IIRC, the drag coefficient is relatively low to begin with

point-blank

iTrader: (9)

Louvers or porting on the low pressure area in the front of your hood?
I have read this can give you down force without added drag (ie wing) and has the added benefit of helping with cooling!

arghx

iTrader: (3)

you trying to run the salt flats or something? An FC is not exactly a '76 El Dorado...

rotary#10

iTrader: (38)

nah, I just want to see what ya'll think and know from experience.

sen2two

iTrader: (10)

smear it with vaseline... It will slide right through that air.

rotary#10

iTrader: (38)

LOL.

here is a link with the aerodynamic profile flow on the fc
http://www.rotorwiki.com/index.php/I...eroprofile.jpg

Evil Aviator

The engineering terminology for the above is usually described as "lowering the drag coefficient". The drag coefficient is commonly abbreviated as "Cd".
http://en.wikipedia.org/wiki/Automob...ag_coefficient

Maybe you could use the ShineAutoProject subforum for that purpose?
https://www.rx7club.com/forumdisplay...prune=-1&f=161

Yes, the S4 aero package will lower the Cd from 0.31 to 0.29.

Yes, pretty much anything that works for cars in general will also work for an RX-7.
http://www.recumbents.com/car_aerodynamics/

As silly as this may sound, keeping the car's exterior clean and waxed will also help.

Flash

iTrader: (2)

Easy, sell your erebuni shogun bodykit and buy a tested aero kit from a legit company, such as cwest, re-amemiya etc.

DBookatay

iTrader: (1)

Now that was F-ing funny... I literally LOL'ed!

jinxed4dub

iTrader: (7)

ahh yeah the old school vaseline mod, tried and true. also protects your paint from road grime from tail gating i mean drafting on the freeway

FC_fan

iTrader: (2)

^lol.

smaller side mirrors maybe? a front bumper that looks like a wedge and is 5' long?lol. but seriously, do you want less drag or more downforce? usually it is a trade off between the 2. if you got a t2 hood, get an na hood and put a fmic in. that would save a little drag.

SirCygnus

iTrader: (1)

odly enough... isnt that big of a factor.

BLUE TII

iTrader: (9)

S4 factory Aero kit is a thing of beauty indeed- developed with the car by Mazda in their new Miyoshi wind tunnel.

It Lowers the Cd (Coefficient of drag) from 0.31 to 0.29 while HALVING the Clr (coefficient of lift rear) from 0.14 to 0.07.

Leaving the car with a good 0.08 Clf and 0.07 Clr balance.

It does this with a deeper 3 piece front lip with extensions in front of the front wheel, extensions in front of the rear wheel, a flat alum pan under the oil pan and a low rear deck spoiler.

When they designed the 93 RX-7 they managed to get a 0.29 Cd, but 0.16 Clf and 0.08 Clr on the base model. To bring the front and rear lift into balance they added the Front lip spoiler to the R1/R2 models (and non functional rear wing) giving it a 0.10 Clf and 0.08 Clr but increasing Cd up to 0.31.

See how cool the S4 factory aero kit is? get this factory aero kit first.

Then lowering the car will always help, eliminate side mirrors (can put them inside like the high mpg-ers do). Reduce body panel gaps and frontal openings, get skinny wheels/tires just behind wheel openings with smooth hubcaps, etc (normal car tricks as Evil says).

Spectrum24x

i usually just lift my left but cheak...

RB RX7

The FC is actually very slick, maybe as slick as the FD with much better downforce as the FD has very little.

Class restrictions at Bonneville were limited to stock aero only when the FC did 238 mph with only 550 hp.

The stock FD flipped at a little over 215, leading to relaxing of some of the aero rules for doorslammers (stock bodies) since they needed some help safety wise when they started reaching 250 mph speeds.

Hard to improve drag numbers with any of the normal bodywork add ons. The small optional aero package sold by Mazda actually worked by adding a small rub strip to the front spoiler and the little kick ups on the rockers. Everything else just slows you down.



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GodSquadMandrake

I remember reading about increasing the top speed by taping off the cracks where the hood meets the fenders/bumper, taping off rain rails and just other little stuff like that on the body that can be taped off.