Happy Days' Fonzie rode a Harley-Davidson Knucklehead in Season 1 then switched to a Triumph Trophy. 3 Triumphs were used but ...

When people tuned into Happy Days 51 years ago, ... He was supposed to be the unshakable tough guy, the king of cool, the guy who could fix a car, a jukebox, and everyone else’s problems.

Despite the fears of being typecast, Henry Winkler would play The Fonz on numerous occasions after Happy Days.