E30 Aerodynamics

[2mAn]

I read a few books a long time ago...
t

Thanks for the reply Toby, that makes a lot of sense actually. Care to share the titles of those books you read?

[e30_302]

Competition car aerodynamics is a pretty good one.

[2mAn]

Competition car aerodynamics is a pretty good one.

Is that the one by Simon McBeth?

[e30_302]

Right, the updated 3rd edition just came out about a year or two ago.

[RoccoB517]

Just an update. I'm going to be doing some changes to the car this off-season that will allow me to smooth out the flow a lot better. I won't need a muffler anymore, the diff cooler will allow me to close up the NACA duct, and some adjustments to the rear suspension will allow me to close up a bit more space surrounding the trailing arms. The only thing I can't manage to clean up is the skid plate. Where it sits is only 3/4" from the oil pan, and 1.5" from the ground.

[2mAn]

Right, the updated 3rd edition just came out about a year or two ago.

sweet, its already on my list of books I need to buy/read.

Just an update. I'm going to be doing some changes to the car this off-season that will allow me to smooth out the flow a lot better. I won't need a muffler anymore, the diff cooler will allow me to close up the NACA duct, and some adjustments to the rear suspension will allow me to close up a bit more space surrounding the trailing arms. The only thing I can't manage to clean up is the skid plate. Where it sits is only 3/4" from the oil pan, and 1.5" from the ground.

(Havent read the book yet obviously so this is just me thinking out loud)

Could you do something to direct the air in front of the skid plate out the side/ around the skid plate so it becomes less of a dragging object?

[TobyB]

Anything by Carroll Smith. I don't think he did much aero, tho...

t

[2mAn]

Seeing this again made me want to look closer and I wonder if these are available to buy



so it looks like those pieces can be bought new, but would need to be adapted to a regular bumper'd car
https://www.realoem.com/bmw/enUS/sho...diagId=51_0767

#15, 17, 18

I just like this as an OEM solution, but realistically, this would probably be a lot easier with a flat sheet cut to fit

[RoccoB517]

^^^^^Alumalite would be the ticket for that.

[e30_302]

Buy a roll of ABS plastic from speedwaymotors, you can do all sorts of stuff with it.

http://www.speedwaymotors.com/Colore...-Ft,31414.html

[squidmaster]

Anyone wanna put their aero where their mouth is?

https://www.instagram.com/p/BOSPw88AHbs/

[Beej '86 325es]

E30 Aerodynamics

This thread got me interested in working on some under-car aero myself.

I decided that my BMP rear bumper area looks like a parachute underneath, so I've started focusing there. I found some 1/8" aluminum honeycomb at a good price, and it's the same stuff we use in aircraft. Here's what I've been working on the last couple of days:

[RoccoB517]

Anyone wanna put their aero where their mouth is?
https://www.instagram.com/p/BOSPw88AHbs/

Yes, I'd be curious to see what you guys think. I sent an email.

[z28]

This thread keeps getting better and better, keep posting your setups guys.

[Eric]

Anyone wanna put their aero where their mouth is?
https://www.instagram.com/p/BOSPw88AHbs/

Dude, we need to hang out!

I added a little bit of aero to the M3. I like the front splitter, but it needs to be stiffened and hung in a better method than it currently is. I'm currently pondering how to accomplish both.

M50_1020 by ericandshovin, on Flickr

L50_9072 by ericandshovin, on Flickr

C52_8459 by ericandshovin, on Flickr

C52_6260 by ericandshovin, on Flickr



M50_4351 by ericandshovin, on Flickr

M50_4580 by ericandshovin, on Flickr