Quote:
Originally Posted by Cd
If I know from the start that that the results of the testing will be more drag, I won't even waste my time with it.
Will the drag still be worse if I create a smooth channel for the air to run out the back ?
I plan to create a channel running from the passenger side window out to the back of the car. ( I'd remove the passenger seat and fold down the back seats flush.
Since this would be asymmetrical, would this lead to any problems with the test ?
In the real world, this would never be practical on a car like mine, but as I look at cars such as a VW Jetta, it seems that you could create a channel for the air that would be weather tight and would not cause extra wind noise. You could exhaust the air out slots on the back of the trunk.
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Cd,sorry for late catching up on this.I believe aspera hit the nail on the head.
Carrying oversize items in my CRX,which required me to have the hatch partially open while strapped securely,rewarded me with a constant flow of exhaust entering from the rear.Nasty!!!!!!!!!!!!!!! .
One might think that everything ahead of the tail is at a higher pressure,but boy could they be in for a big surprise.
I think Hucho would tell you to maintain attached flow while moving your separation point as far back as you can.
If you "open" the body there's a very good chance you'll undo all the good work of the carmaker.