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by SapphireSun 5858 days ago
I think the problem is that they originally did do something like that (the pipe itself), but the pipe is thin and the oil flow was well contained. Under these conditions, the cylinder has to be much wider and therefore much heavier. Additionally, there will be turbulent flow that will mess with the stability of the conduit.

Maybe if there was a gradually thinning cone, you could get it back to laminar flow partway up.