Aero Help On A Body Design

[Hasbro]

Originally Posted by botsapper

Your target specs sounds interesting. I'm try to get a sense of the design project. Same hp. range, ht., & width of an Elise. Longer wheelbase but shorter length!, than an Elise. With the compound curve windshield (based -Stratos, 917, T-70, etc.) glass, I picture a 7/8's scale of a Riley Daytona Prototype with flatter slab sides. Your design has bobtail (short rear overhang) proportion gives it a great shorter track-car look but a longer overhang will give you better controlled trailing flow. The trailing rear tire eddies will be minimized & your lower belly air channeled cleaner.

Your pretty spot on. Similar to a Riley (very similar sides,actually) but also a hundred other track cars. but set up for smoother flow than downforce. A tiny supercar with high mpg. An easy 1.1 g street car that can go higher with a wing etc. And easily breaks the Lotus7/Mini 120-130 mph brick wall. By the way, 1500 lbs. is fully loaded, maybe even with 25 lbs. of sound proofing, lol.

[Hasbro]

Originally Posted by Frank Lee

Longer yet.

Hmmm, a bit much maybe. Also harder to hang a plate if regs require a flat facing plate:





^ The above Longtail has a 4" tail but plate could be recessed no problem.
v Here's a license plate sized rear.
I like these two.



Here you go, jerryd:

[taffy]

Looks good, very ultimaish in its styling!

I am building an electric locost and having fun trying to reduce drag while keep the looks.
I am thinking pull the lights inboard, smoothing the rear guards to be more inline with the rest of the body work, increasing the windscreen rack back angle, sealing the under car, custom making a seal nose cone, modding nose cone to deflect around away from front suspension

[Bicycle Bob]

If this is on a Locost, shouldn't the windows be closer to the driver? Probably the highest drag feature I see now is the angle of the bottom behind the wheels, but I assume it is for styling or downforce.

[Hasbro]

Originally Posted by taffy

Looks good, very ultimaish in its styling!

Good eye. Ultima wheels, which by the way are too large, and canopy. I just love the wheels. Similar to Kodiaks. And it's about 800 lbs lighter...

Originally Posted by Bicycle Bob

If this is on a Locost, shouldn't the windows be closer to the driver? Probably the highest drag feature I see now is the angle of the bottom behind the wheels, but I assume it is for styling or downforce.

Similar in size to a Locost but it's a mid engine. The bottom angle starts just in front of the rear wheels so should be ok. Oh, if you mean the gray area those are diffuser slats.
Appreciate everyone's input so far.

[Frank Lee]

I like your version 2.

Aerotechs:

[Hasbro]

Originally Posted by Frank Lee

I like your version 2.

I moved things around on #12 so by that you mean the longest one?
I looked for a pic of the Aerotechs undertray but no luck. Would love to see more of the construction.

[NachtRitter]

Looks like you can buy a model of it (Frank posted what appears to be a scanned image of the instructions). See Oldsmobile Aerotech Plastic Model Car Kit 1:24 Scale

[botsapper]

Haz,

I have an recent aero sketch you could use as some reference. It also uses a Stratos glass & teardrop driver compartment. The base donor was Caparo/Hulme-like open front wheel concept. I've enclosed the front wishbones & rear wheels. The side intakes are maybe too big for good aero-numbers. You could delete the rear wing & add proper wheel covers. The short-tail proportion may work for your purposes. You could use Toyota Celica lights for your front clip.

[aerohead]

You might want to take a gander at Dr.Michael Seal's series of Viking cars he and his students did at Western Washington University.If you did nothing but completely rip-off his design,you'd end up with a very fast,stable,and fuel-efficient car ( 70-100 mpg if you'll stick with a girly-man poweplant).