Lap time different with/without doors

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Richard_420R
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Lap time different with/without doors

Hi, can't find an answer to this.  I assume that the car is quicker with doors on given increased turbulence and drag.  Is that the accepted truth?  Has anyone tried to measure it?

 

Tom_Arundel
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And quicker still with the hood up.....if you can keep it up....but who wants to!  Aero and tonneau are best

ScottR400D
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First track day I did I had the screen on. Awful without doors, lots of buffetting but really aeroscreen is only way to go on track. 

Roy Blyth
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I think it depends on what you're doing.  I would say doors off at Curborough, but definitely doors on at Goodwood!  Curborough is relatively short and low speed (but not that low! Hehe ), whereas a track like Goodwood is long and fast.

My first sprint at Goodwood I did with the doors off and finished the lap with my eyeballs still rattling around in my head with the buffeting - never again!  Curborough is different as you need to get yer elbows out and muscle the car around Driving 

Richard_420R
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Thanks all - I found the turbulence pretty bad with doors off at Blyton so assume it is slower ... even though it kinda feels faster Wink

Need to get comfortable I can switch aero and windscreen around quickly and easily before I go that route - I am surprising myself how much I'm enjoying my time on the road and don't really want to use a helmet for all trips...

ScottR400D
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Once the aero screen is fitted, with captive nuts, it’s really only a few minutes to swap either way

Disconnect the heated screen wires, pull the wipers and 4 bolts out and back.