https://goldenmidas.net/story.php?title=this-categorizes-ub-as-a-large-school-powerbar Inside it's the form of mechanism present in each wind-up toy or mechanical watch: a constant-pressure spring and a gear reduction mechanism. The shaft goes by a shaft seal to maintain water out and grease in, and your complete mechanism is designed to by no means require any upkeep. Sat, 02 Jan 2021 05:19:59 UTC en