right on....i have thought about building one out of a pto shaft or an agricultural shaft....seems like an excellent idea. There is this store i saw in Wisconsin one time called...Farm and Fleet....and there is also Fleet Farm (owners were brothers)...anyway, it was the greates store i had ever been in, like walmart, home depot, a parts store, a tractor store, all wrapped into one. They had bins full of ujoints and spherical bearings, and tractor tie rods and links with heim joints. They had splined shafts and everything. It was like a home-brewers paradise. But besides the point.
Yeah, when my shaft is greased
you can't hear a thing.