Convertibles, the ultimate in aerodynamics?
I was following a convertible BMW into work today and could help but think of how perfect they would be for aeromodders. its almost a blank template with the top down, has anyone modded one?
Also, could someone show what a convertible looks like in a CFD model? (top down of course) |
You can chop the top off anything! :thumbup:
And CFD? Don't need it. Imagine a big bowl of spaghetti following a convertible around. |
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Convertibles would be fine, as long as you removed the windshield and completely smoothed over the whole passenger compartment at the level of the top of the doors.
The windshield being there means that the A (frontal area) is just about the same as the full-roofed version of the car. All of the non-smooth shapes in the passenger compartment (seats, roll bar if any, boot for the top or the folded-up top, and of course the driver and passengers!) increase the Cd a whole lot. So on the whole, convertibles are rather horrible for aerodynamics. -soD |
Please, pretty please, don't ruin a convertible ! The whole point is to have your hair in the air.
Aerodynamic drag would be the least of my worries while driving one. :D |
with the window in place, wouldnt the passenger compartment act like a pickup bed and develop a nice cushion of air? i'd like to see it, even if it does look like a spaghetti monster if someone would be willing.
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They've been taking advantage of drop-tops for over half a century.
http://www.jalopyjournal.com/wp-cont...01/10large.jpg |
...ask the NASCAR guys and they'll tell you "...HELL NO..." on racing convertibles!
...The early NASCAR race venues had two catagories, hardtops and convertibles, and NASCAR -- literally -- had to "pay" drivers to race convertibles because the aero "drag" was so bad the cars weren't competitive [story relayed from Richard Petty]. |
The '64 Spitfire I used to have would have been great for aeromods: remove two nuts and the entire windshield and frame assy pulled off; and the cockpit was lined with snaps for the tonneau I had.
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Quote:
See this image for an example: http://content.mamotorworks.com/img300/FR4154.jpg |
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