vitalis on Nostr: the problem is that it was too easy to overheat while wearing the great helm because ...
the problem is that it was too easy to overheat while wearing the great helm because typically one would also be wearing a chainmail coif and small dome cap helmet underneath. the development of the complex bascinet meant that it was so much easier to just lift the visor to cool off and get fresh air.
usually if someone was rocking the great helm during the 14th century, it was either for tournament competition or because you couldn’t afford a fancy bascinet on the battlefield so you basically wore two helms instead (pic attached shows the helm worn underneath the great helm)