Originally posted by sosidge
I've always been curious to know how well an r/c car would perform with a shaped and enclosed underbody, like a full size car (maybe a lexan moulding). Would tunnels and diffusers suck the car down noticeably, or would it just be a weighty gimmick? Shame that enclosed underbodies are banned.
I believe an enclosed body would reduce the amount of drag on a rc 1/12 car since with a normal 1/12 body air gets sucked into the inside from underneath before exiting from the back and this creates a lot of turbulance.
A diffuser would add downforce without much increase in drag as it smoothens the air flow to the back.
Also a proper wing would produce down force with less drag than a spoiler as the latter doesnt allow air to flow as smoothly to the back of the car to provide wake infill. Result will be a large area of low pressure and turbulance behind holding the car back. Just IMO.
