I have no clue where to put this but this is the closest thing I could think of.
The title is pretty self explanatory. So I am trying to figure out how to set a limit on how fast a part can spin and also how to reverse the direction it rotates in with no luck. (Yes, I’ve tried youtube and it makes no sense.) BTW this doesn’t use any code.
Check out this link to HingeConstraint | Roblox Creator Documentation.
If you want it to change in game then you are going to have to script it.
The Motor HingeConstraint | Roblox Creator Documentation controls the speed in Radians/second and to make it rotate the reverse direction you need to make it negative.
The Motor HingeConstraint | Roblox Creator Documentation sets how quickly the Motor tries to reach the Velocity you set it at.
You may have to play with the HingeConstraint | Roblox Creator Documentation and HingeConstraint | Roblox Creator Documentation settings to actually get it ‘tuned’ correctly.