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Old 04-08-2021, 02:08 PM   #18
Pete'sMH
Senior Member
 
Brand: Thor Motor Coach
Model: Forest River Forester 235
State: Indiana
Posts: 4,883
THOR #6826
Quote:
Originally Posted by atreis View Post
FWIW, at highway speeds the panels don't actually experience a lot of high velocity air movement. The air gets pushed up over the roof forming a bubble. If you've seen a boat's wake, it's the same thing, but extended vertically up and over the roof. The actual air movement within the couple inches of the roof where the panels are is pretty low. Most of the forces the mounts need to handle are related to the RV bouncing on rough roads.


Not sure how you could know that but my anxiety came from considering the unpredictable gusts from passing an oncoming semi on a two lane with closing speeds that could be 140mph or more. Obviously glued mounts work but I feel safer with screws into structure and figure a few more screws well sealed won’t significantly to the leak of risks given that there’s already 100 or more screws up there.
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