You are very lucky to have Robin Tan working this system. He has done an incredible job of getting it back together in fine shape. I thought the bearings were totally shot, but the grease injection has given them some extended life. I will not run the max performance tests until Friday. Today, I got the A/D and D/A DUCs hooked up and tested and ran the system for new friction tests and THD tests. The system is performing VERY well. There are not much extra force pulses from bearing problems. A few at 1st, but after running a while, the bearings improved in performance. Do not assume that they will last long, though. I still think that we will have to replace them in the near future.

I intend to train Robin and IBST people the next 2 days and then run the last tests Friday. The accumulators really WORK WELL. This system is now a real seismic system and can reproduce all but the most energetic earthquakes. I ran several earthquakes today and found the system response to be vastly improved.