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exterior sunvisors
has there been any discussion or testing about the advantages to having sunvisor on big rigs, or flater windshield trucks, do you think there is an aerodynamic advantage, I have been working on one for my Kurbmaster thinking that I can gain something but wonder if they act more like a scoop then air deflector? Anyone have any ideas, would load a picture but have not been able to sort out how, they are all too big for some reason even after resizing.
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