The question before us is whether it is 1) safe, 2) feasible, 3) advisable, 4) possible to align a HF Dust Collector motor horizontally. There have been many examples in the review section of doing this and there have been a lot of comments both pro and con. A couple of folks (CovenantCreation and MichaelJ) have done so and reported success, while others have added that vertical motors should not be run horizontally. The basic reason seems to have to do with the bearings. However, beyond the general and equally useless suggestion to “check the motor”, I have not seen any details regarding the risks or how to identify whether a motor can in fact be rotated.
So I’ve pretty much decided to go for it and set up my 2-stage in the horizontal position. This alignment has some clear advantages the most obvious being the ability to line up the center of the cyclone with the blower intake without any angles or extensive runs of hose. However, since my Woodcraft cyclone lid does not have a center hole it looks like I’ll go ahead and build a Thien Separator Lid. Following are some pictures from these links and my Sketchup with the horizontal motor. In the meantime, I’d be real interested in hearing from some experts on on this subject.
-- tim hill www.newcalshop.com