I sincerely don't think you have anything there to be concerned about. Most of the Rollermatics I've heard (including my own) sound like this or louder in some cases. Most 1-18's are definitely louder. Others here may differ on my opinion however. Phil is more attuned to the sounds than I am and can maybe provide futher advice. Other members as well have taken to great lengths to sound insulate their machines.
Phil, by the way, while we are discussing these particular machines have you ever come up with a good solution to replace that darn ring nut that holds on the clutch? All of them I've worked on always breaks the locking tabs off and then you have to mess with using Loctite.
Phil, by the way, while we are discussing these particular machines have you ever come up with a good solution to replace that darn ring nut that holds on the clutch? All of them I've worked on always breaks the locking tabs off and then you have to mess with using Loctite.