Ulf is using the AlfaSpid rotator to turn a set of small VHF and UHF antennas, 9 element for 2 m, 6 element for 70 cm, and a 5 element for 6 m, there is also a TV-antenna below rotator. This array doesn't present much of a load to the rotator, but you can see how easy the AlfaSpid mounts in a pipe to pipe arrangement. With the two sets of heavy duty bearings inside the rotator, it can easily handle the stack without the need for bearings above the rotator.

You can read Ulf's review of the rotator at http://www.eham.net/reviews/detail/2277