Originally Posted by
bubbagrannygear
I get it (sort of) that safety isn't your primary concern, but just want to caution you: It is my understanding that the shiny plastic covering on conventional Styrofoam helmets is there so if you hit the ground with forward velocity (Duh?), your head will slide after impact rather than the Styrofoam catching the asphalt and you breaking your neck (generally to be avoided if possible). Don't have any data to back this up but you might be statistically safer without a helmet then modifying one that may behave in ways you don't anticipate.
Same reason that we have loose scalp, there's some give there instead of yanking our head around. I'm more than a little skeptical about the plastic over styrofoam performing that way though, since we still have our scalp inside after all, and the harness has some give in it as well. Nevertheless my plan is to have a covering over it - the vinyl should slide fine.
Not that I'm modding it to be safety equipment
It just needs to have that visual aspect.