Gentlemen, Well, things seem to be going along quite nicely, but I think I've hit a roadblock. I can now setup the boom for a very repeatable 11sec period, but I just can't seem to coax anymore out of it. I've tried tilting the base with the front screw and bringing the rear boom pivot point closer to the vertical plane of the wire pivot. Just doesn't seem to want to slow down any more than about 11sec. I am using a 1/2" dia. threaded brass boom, with a sharpened point on the pivot end. This point is pivoting in a VERY small dimple at the end of a 3/8" bolt. I even tried applying a small amount of lube to the pointed pivot, in an attempt to reduce any friction. Any suggestions? Jim Martin _____________________________________________________________________ Public Seismic Network Mailing List (PSN-L)
Larry Cochrane <cochrane@..............>