Originally posted by owm:
Hmm..if one uses a screwdriver to make a hole in the helmet, wouldn't the structural integrity of the helmet be compromised already? Doesn't seem to be a safe thing to do IMO.
If you open the 2 upper wind hole covers from zeus helmet ... it originally has 4 big hole already ... and the holes are much bigger than the hole I made... (the hole to stick the cover is square and is about 1 cm)..
Anyway, I just put 1 screw only (at the front).. the back I use sticky rubbers... but is very firm already ...