[Kamen Rider Lucha]

Quote:

Originally Posted by Dr Kain

Sentai doesn't abide by the rules of 13 weeks though. It's a year long show so it is immune to those standards. The same goes for long running anime series like One Piece.

Not really, though? I mean, yes, it's a yearlong series -- but look at where each show's big moments (signified by the introduction of major new mechs/power-ups/toys, first/final confrontations between heroes and generals, major plot reveals, dramatic character moments, etc) tend to occur. They usually happen pretty close to every 12-13 episodes, which translates roughly to episodes 11-14, 22-25, 34-37, and 46-50.

It's not a perfect indicator, especially with pre-2000 series, but it's consistent enough to show that Sentai operates in mostly quarterly cycles.