When you mount a beam on a side mount, do you use some sort of limit switch to limit to rotation of the rotor (or rotator, as the case may be) or just let the boom crash into the tower leg? Thanks. Fred KE7X Fred Cady (ieefc@msu.oscs.montana.edu) Department of Electrical Engineering Montana State University Bozeman, MT 59717 (406)-994-5976