Quote:
Originally Posted by landscaper52
Pic 1. Aero shell 01 old version...finally...
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landscaper52, just took a look at your photo.My thought is that directly behind the cab,and over the forward(white) section of the cap roof,you'll have separation and then re-attachment.And I don't think that's a bugaboo at all.-------------------------------- What does concern me though,and this is an issue Bondo ran into with his first cap,is the "snap" angle,where the descending ramp takes off towards the tailgate.I think the flow is definitely going to separate there,and I'm not convinced that it will re-attach,which will really cut into its performance.If the roof-line curves very gently at first,it can begin to accept even more curvature as it moves further to the rear.Without this initial curvature,the boundary layer cannot survive.--------------------------- You might want to go to MetroMPG's thread for his Permanent Metro Kammback.In that thread you will find an aerodynamic template we develped for tear-free streamlining.------------------------------------------- If you'll scale your truck,to fit under the template,it will illustrate exactly,the path that the air will follow without separation.If your cap fits the template,your good to go,and my eyes are crossed.If its outside the boundary of the template,you could be disappointed at the gas pump.That's not necessary.