Quote:
Originally Posted by aerohead
I don't have a pictorial to share,but here's some data to think about.
*Kach22i's prop spinner is about Cd 0.30 in a free stream of air.
*If you put 1-soup can(same outside diameter) behind it,it drops to Cd 0.233
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Hmmm...0.3 is not bad considering that's only a little bit more than the average body drag right?
I noticed modern Porsche mirrors are 1 soup can longer than the typical brick shaped mirror, I wonder how much drag that cuts out. With the 911 coming in at Cd 0.27 with ginormous 275 width tires, they have to be doing something right.