I believe a common gear used is a cycloidal gear for various reasons.
check: http://www.gearshub.com/cycloid-gears.html
Use Wingardium Leviosa.
Molecular Clock
Molecular Clock
You go inside the clock tower, make your way to the top, use the oil can, and grease the gears that directly connect the two large gears.
You go to the clock tower that guys working on and go inside. Then you will use it to oil some gears at the top.
A clock ticks because of the gears moving.
Smash it on the ground until it is in pieces, then there should be some gears out.
You only have to oil the middle gears until you can't oil those gears anymore.
the gears in the clock tower
clock.
Inside the clock tower at Diamond Plains, the clock gears are rusted. You oil only the center set of gears, not the ones that go around the outside. Click on each only until it sparkles, and do not waste oil by missing the gears. When you are done, turn the handle to start the gears and get the clock working again.
mechanical energy