cool project. I always like to follow these custom parts threads! Keep posting up pics!

350/370's react quite well from an aero perspective to lots of rake....

Well heres 15.2* and 8 fins then! Centers 10", next 2 are like 5.375", and outer 4 a like 7 something. Just something i picked. All are 100% parallel with each other so we'll go full scale with alumilite and test with string i guess.

http://i39.photobucket.com/albums/e1...s2oetva5n.jpeg

http://i39.photobucket.com/albums/e1...syvlza0f2.jpeg

http://i39.photobucket.com/albums/e1...s3t7wujmr.jpeg

You should just leave it all cardboard.

I like the Carbotech stickers on the bumper too. Just in case I didn't see one, there's another one to remind me.

When you taking this thing to the track? You've been building it for 2yrs now, and haven't tested it on the track. I would have done one thing at a time to see if it made any improvements. ;)

Because its not done.

And im building this to be safe like all my past cars ive had on the local tracks.

And these projects cost nothing vs having to buy seats, belts, almost 2k wing, cage etc. rome wasnt built in a day and ive got expensive other hobbies.

Rusty ill make it to Pitt this summer. That 1:30's i saw must be killing you. You can tag along down into the teens with my draft. Ill slow it down some.

Just wait until you get of of those spec Miata's running you down. :icon17: You couldn't run with Bruce Sheldon and his Ford Pinto @ 01:10:584. :icon17:

I can't wait to run the new section of track they built last year.

Same here. Last time i was there was on my bike at a 1:03's. Im assuming unlike mid ohio where im faster in a car than on my bike, Pitts gonna be the opposite. Of course mid ohio does change the key ohio.

Diffuser needs a curve, not flat-plane. You are trying to replicate the top surface of an aircraft wing. You "need" outside fences aligned fore/aft with the longitudinal centreline of the vehicle - just inboard of the tyres, so that "wash" around the inside of the tyre does not create turbulence in the diffuser

Would probably help to install maybe 3 or 4 more strakes to channel air as well.

I'll post a photo of mine to make this verbiage clearer.

Yes please do

I think he means something like these. These designs isolate turbulent air from the rear wheels, keeping the air under the car moving as fast as possible.

http://speedhunters-wp-production.s3...57-800x533.jpg

http://speedhunters-wp-production.s3...6-1200x800.jpg

http://speedhunters-wp-production.s3...09-800x533.jpg

http://speedhunters-wp-production.s3...96-800x533.jpg

https://youtu.be/pdAEHB5-CPU

You could make your own wind tunnel

Yeah if you want a good car to study, under suzuki's s15 is one of the best.


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Flat diffusers work fine because we are interacting with the ground plane. Airfoil shapes are required when setting up relative pressure differences, but here we can work on a local pressure.

Now for angles:

http://www.the370z.com/attachment.ph...1&d=1453492708

From https://www.linkedin.com/pulse/how-d...eNoSplash=true

Enjoy