With the gap-sealer,the rig becomes an aerodynamic singularity,like a bus or motorhome.
The component drag breakdown for the 1977 Omnibus Lastauto,Stuttgart intercity bus (from Hucho),with Cd 0.36:
*nose = 0.041
*surface friction = 0.055
*wheel drag = 0.064
*base drag = 0.20
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Today's European M.A.N. rig is rate at Cd 0.30.
Renault's longer-boat-tailed V.I.R.A.G.E. of 1987 was Cd 0.29.
Bob,I think you've got 'em on the run!
