Ferrari's underbody work

[///M42 sport]

I was able to get 33mpg on my 325i. Maybe the oem skidplate had something to do with it. Was also running synthetic oil/tranny/diff. measured tank to tank. All highway 500m trip.

[JMil86]

maybe you should realize this thread is 6 years old and the idea was already shot down? who exactly are you telling off here?

Just wanted to put in my 2cents. And yes you are a d bag, you have proven that. Shut up, and stop nazi-ing around of an internet forum and get a life(15k posts, maybe time to take up a new hobby dude. Maybe find a new boyfriend. I hear E harmony has great results on gay match ups.) I'm so scared of you big moderator man. You can probably pick up other internet fags with that. "You:Hey guess what? Guy 1:What? You: I'm a moderator on a forum. Guy 1: Ok I guess I'll let you suck my dick."\

GET A FUCKING LIFE!

[dirtysix]

Cup of tea and a lie down perhaps??

[ethrty]

id bet he hasnt got laid since this thread was started

[JMil86]

Yeah thats true. Unfortunately you can only score sheep out there in NZ.

[hoveringuy]

Mom needs to check his Prozac. Teenage angst.

[fryerfighter94]

just so you know, for reference, a 1990 ish porsche has the same drag coefficient as an e30. if that previous post is right

[REVHARD05]

1000+

even cars with lots of horsepower top out around 170, and those are usually 500+hp cars. I think stu said he hit 155, which is moving in our cars!

I don't think it would be a good idea even if you could.

i hit 95 one time

[nando]

Just wanted to put in my 2cents. And yes you are a d bag, you have proven that. Shut up, and stop nazi-ing around of an internet forum and get a life(15k posts, maybe time to take up a new hobby dude. Maybe find a new boyfriend. I hear E harmony has great results on gay match ups.) I'm so scared of you big moderator man. You can probably pick up other internet fags with that. "You:Hey guess what? Guy 1:What? You: I'm a moderator on a forum. Guy 1: Ok I guess I'll let you suck my dick."\

GET A FUCKING LIFE!

who are you again?

oh yeah you drive like a moron and r3ved your car. You're just butt hurt because I didn't give you a cookie for being stupid.

[GaryE30]

unless im mistaken youve got that backwards
an airplanes wings are curved on top to slow the wind going over them so they can produce an upward suction force.
so if you really wanted to you should put dimpled panels like the new lexus (or whatever it is) to slow the air down and creat a low pressure area under your car.

and im pretty sure in most of the super cars at least the S7 air is channled (i cant spell anything) from under the car upward creating down force

correct me if im wrong

I know this was 6 years ago, but it is wrong. Since someone already bothered to bump it, I'll contribute to this part. E30 is a brick though. You won't gain much if anything from that.

The non-symmetric airfoil is shaped such that the velocity of the air traveling over the top is faster than the air traveling underneath which results in lift.

Velocity increase = pressure decrease
Velocity decrease = pressure increase

Therefore... lower pressure on top and higher pressure underneath results in lift.

Note: picture for reference

[hoveringuy]

I know this was 6 years ago, but it is wrong. Since someone already bothered to bump it, I'll contribute to this part. E30 is a brick though. You won't gain much if anything from that.

The non-symmetric airfoil is shaped such that the velocity of the air traveling over the top is faster than the air traveling underneath which results in lift.

Velocity increase = pressure decrease
Velocity decrease = pressure increase

Therefore... lower pressure on top and higher pressure underneath results in lift.

Note: picture for reference

Not entirely true...

the lift results from circulation around the wing, the airfoil shape is the most efficient way to get the circulation.

That's the reason you can put an engine on a pizza box and get it to fly.

Also, the lift vector will be tilted back more producing drag.

[Danny]

Mom needs to check his Prozac. Teenage angst.

:rofl:

[Kershaw]

doesnt the gearing restrict the e30 to less than 150 anyway? you could have 300whp, but you'll run out of rpms before you run out of power.

i know my rx8 can hit "186mph" on a dyno due to lack of wind resistance, because thats where 6th gear tops out at. turbocharged rx8s do 175 with about ~300whp. stock they do about 150. i hit 149 and i was almost at the end of 5th. closedroadonatrackdontdothatonapublicroad.

[nando]

not really, there's a ton of different gear ratios available. and it's not like redlines are set in stone, if you're building a motor that makes enough power to do 150+ you can build it with a 7500-8000rpm redline if you want.

even with 4.10s, I could hit ~142mph at my peak power of 6500rpm in 5th gear. I've never been to a track where that's even possible though, and I'm certainly not going to do it on the street. :)

[idanity]

R
best form of ground effects are tunnels built into the undertray that create a venturi (think of two basically hour glass shaped tunnels). Then, you add a diffuser at that back of the car to slow that air back down and reduce the turbulence as the air expands back out again. This both increases downforce and reduces some of the parasitic drag. This type of setup on an E30 would be very difficult to design.

kinda like these awesome pix







images from one of my favorite pages i found at work being bored.
i know its old, but its awesome








i have aways wanted to add flat panels to the bottom of all my cars (like porsches)
maybe i will attempt this next.