Place it just before the reveal in an edit, then follow it with Vine Boom for the payoff and Metal Pipe Clang when a mechanical mishap follows. Keep it as the setup beat, not the ending, so the paired sounds carry the reaction.
このサウンドについて
Motorin is a brief 1.7-second sound effect centered on a rising motor-like whirr that builds quickly and cuts off sharply. It feels sudden and playful, like a small machine kicking into life at exactly the wrong moment, which makes it work as a quick surprise or a comic interruption. Use it when a scene needs a burst of energy without any words getting in the way.