Quote:
Originally Posted by JohnForde
Cuff & doors all at 11 degrees. Total length 84" (10" Cuff, 8" step bumper, 48" wood doors & 18" polycarbonate twin wall extension)
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The top at 16 degrees is too steep.
Your vortex generators may be hurting instead of helping. They do help some if done right on a bare trailer but I don't know of any industry testing that combined vortex generators with a trailer tail. If they helped I would expect we would see them sold as part of a trailer tail kit.
Here is a paper on the topic:
https://scholars.csus.edu/esploro/ou...57830972201671