I know the game was a little harsh on fans, but i was wondering if anyone has made the helmet, and if anyone is selling the helmet. Right now im in the process of making the Suit, but was having harsh times with the helmet.
A good average size for helmets is around 30cm. The best way to do it is take a vertical measurement from a line even with the bottom of your chin, up to line even with the top of your head, then add a couple of cm height to allow room for glassing/slushing and padding.
ive made this and im going to warn you the visor is slanted back which really screws with how the helmet fits, so unfortunatly its going to have to be big, much bigger than your measurements sorry