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What you are seeing is the effect of a huge vortice at the back of the cab. Vortices create big losses due to drag <snip>


I thought that "vortices" was the plural of "vortex". <img src="/forums/images/graemlins/confused.gif" alt="" />

Everything else you stated made perfect sense Frank. <img src="/forums/images/graemlins/bird.gif" alt="" />


You are right, vortex is the singular, vortices the plural. My fluids teacher didn't have the best command of the English language as with many of my instructors, it is his second language.

Frank.

1994 4runner, 3.0, auto, 4.88's, 31's, BJ spacers, Coil spacers, air shocks, D-ring anchors, 4Crawler F/R swaybar discos.
www.sdori.com