I am designing a heavy-duty pusher trailer that is to be built within the next three weeks or so. This post pertains to centrifugal clutch engagement RPMs as stated in the title. The engine I'm using the diesel with the maximum RPM rating of 3600, but the sweet idle at 3000 RPMs. I'm wondering what RPM would be an ideal cut in for centrifugal clutch. Heretofore I have been using any mid-chassis Chinese engine with the clutch assembly and cable. Your thoughts and advice on this would be greatly appreciated.