IanL wrote: ↑Tue Apr 19, 2022 11:44 am
DrivingForce wrote: ↑Tue Apr 19, 2022 6:34 am
Ah, sorry I meant a trailer hitch-mounted cargo box that sits behind the rear bumper, not a trailer. That way the frontal area of the car isn't changed.
Its not just an issue of the frontal area. A protrusion at the rear may create a fair amount of turbulence in the airflow, which causes drag. Ask a C130 pilot what having the ramp down to the horizontal does to his airspeed and how much he has to open the throttles to compensate.
This is true, but I think the area behind the Soul is a very turbulent area anyway since it is not a streamlined car. A rooftop box will also mess up the flow of air. Arguably even more than a trailer hitch mounted cargo box.
I guess nobody has tried both?
I'd try the hitch method, but I can't seem to find good info on a trailer hitch that works, and also I would need some sort of license plate bracket since the license plate would be blocked.