I am building a watch and want to include a mechanism, where, upon the press of a button, the mainspring releases its energy causing the music box to play. Traditionally, the music box does not allow all energy to be released at once by using a wind resistance governor.
What can I do to introduce friction to a rotating gear in such a way that it does not cross "x" RPM despite the energy flow from the spring...however the friction also does not completely stop the gear.
Essentially, all I am trying to understand is how to cap the RPM speed of a gear (being powered by a mainspring/elastic potential energy)
