I was watching it in the rain yesterday and a drop of rail fell from the back edge of the cap onto the tailgate at 60 MPH. It was interesting to see that the fall of that drop of water was almost identical to what it would have been if I had been sitting still instead of moving at close to 90 feet a second. A leaf stuck to the top of the cap with rainwater did not blow off in 20 miles on the Interstate.
regards
Mech
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