top up or top down, best areo dynamics ?

PONYMAN · July 23rd, 2007, 01:46 AM

To all you vert owners ,I have a quick question.
What is the best dynamics, the top up or top down.

5literJeff · July 23rd, 2007, 01:56 AM

Eh im not a vert owner but it certainly seems like top down would create much more drag because of the large volume of air you are displacing inside the car and the wind resistance on those surfaces. So top up would seem to be more aerodynamic. Maybe someone else can offer experience on this.

BWAL09 · July 23rd, 2007, 01:56 AM

im gonna assume top up, just so the air flow can follow the roofline as opposed to being sucked down into the cockpit right behind the windshield.. damn, i should be an aerodynamics engineer.

8t6gt · July 23rd, 2007, 08:00 PM

Top up like jeff said all the air going inside the car and creating alot of drag but with the top up the vinyl flaps alot at high speeds

JBIGBOOTSY · July 24th, 2007, 12:26 AM

start the race with the top up and at the 1/8 mile unlock it and put it down before you cross the finish.

neverfastenough1 · July 24th, 2007, 01:45 AM

Originally Posted by JBIGBOOTSY

start the race with the top up and at the 1/8 mile unlock it and put it down before you cross the finish.

You won't have to worry about it anymore. Thats for sure.

Rustbelt · July 24th, 2007, 01:11 PM

just got 21mpg at 85 mph with the top down and a sun burn too.

if your top fabric is tight i would say top up. if your top is a sway back like mine i would say top down.

kennyGT · July 24th, 2007, 01:48 PM

Originally Posted by BWAL09

im gonna assume top up, just so the air flow can follow the roofline as opposed to being sucked down into the cockpit right behind the windshield.. damn, i should be an aerodynamics engineer.

actually a type of air bubble is created in which the flowing air passes over it making it somewhat aerodynamic, but i would assume top up would still provide better dynamics

Stangzilla · July 24th, 2007, 04:50 PM

Is this a real question?

superman5.0 · July 24th, 2007, 06:59 PM

i would say top up, my brother has an 02 ls1 vert and we cruise the interstate at 110 usually and have done it both ways and it definatly was not a fun time with it down and we once tried to push it with top down but it was really draging and could tell didnt have much left.

PONYMAN · July 25th, 2007, 10:54 AM

thanks for everybody's input.

Dnmeistr · July 25th, 2007, 02:27 PM

Originally Posted by BWAL09

im gonna assume top up, just so the air flow can follow the roofline as opposed to being sucked down into the cockpit right behind the windshield.. damn, i should be an aerodynamics engineer.

Did you stay at a Holiday Inn Express, that qualifies :sleep

Stangzilla · July 26th, 2007, 12:09 AM

Originally Posted by Dnmeistr

Originally Posted by BWAL09

im gonna assume top up, just so the air flow can follow the roofline as opposed to being sucked down into the cockpit right behind the windshield.. damn, i should be an aerodynamics engineer.

Did you stay at a Holiday Inn Express, that qualifies :sleep

Actually like mentioned b4 the air does form a sort of bubble over the car. There is a little buffeting but most of the air continues over the car.. So much for your engineer job...

BWAL09 · July 26th, 2007, 12:11 AM

well shit, i already sent in my resume to the Le Mans Saleen racing team

you bastards shattered my dreams!

July 23rd, 2007, 01:46 AM	#1
PONYMAN Newbie Join Date: Feb 2007 Location: Houston \ Flatonia Texas Posts: 47	top up or top down, best areo dynamics ? To all you vert owners ,I have a quick question. What is the best dynamics, the top up or top down. __________________ Bring it !!!

July 24th, 2007, 04:50 PM	#9
Stangzilla Hardcore Enthusiast Join Date: Aug 2006 Location: On my way to Baines's house!! Posts: 2,984	Is this a real question? __________________ Rotating The Earth 1320 Feet At A Time!! The very existence of flamethrowers proves that sometime, somewhere, someone said to themselves, “You know, I want to set those people over there on fire, but I’m just not close enough to get the job done.”

July 24th, 2007, 06:59 PM	#10
superman5.0 Enthusiast 93 GT Hatch 12.68@112.57 Join Date: Jun 2007 Location: Brandon, FL Posts: 532	i would say top up, my brother has an 02 ls1 vert and we cruise the interstate at 110 usually and have done it both ways and it definatly was not a fun time with it down and we once tried to push it with top down but it was really draging and could tell didnt have much left. __________________ http://www.geocities.com/vz_one/superman5.jpg

July 25th, 2007, 10:54 AM	#11
PONYMAN Newbie Join Date: Feb 2007 Location: Houston \ Flatonia Texas Posts: 47	thanks for everybody's input. __________________ Bring it !!!

July 23rd, 2007, 01:56 AM	#2
5literJeff Regular Join Date: Jul 2006 Location: Blue Ridge, South Carolina Posts: 260	Eh im not a vert owner but it certainly seems like top down would create much more drag because of the large volume of air you are displacing inside the car and the wind resistance on those surfaces. So top up would seem to be more aerodynamic. Maybe someone else can offer experience on this.

July 24th, 2007, 12:26 AM	#5
JBIGBOOTSY Hardcore Enthusiast 1990 LX hatch Join Date: Aug 2006 Location: Hobart Indiana Posts: 1,803	start the race with the top up and at the 1/8 mile unlock it and put it down before you cross the finish.

July 24th, 2007, 01:11 PM	#7
Rustbelt Regular Join Date: Mar 2007 Posts: 221	just got 21mpg at 85 mph with the top down and a sun burn too. if your top fabric is tight i would say top up. if your top is a sway back like mine i would say top down.

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