>... BTW, I too notice lots of >lost motion movement in Yamaha uprights. I was a bit suprised to see >one of our Australian friends (Ron OVers?) citing the U1 as being >especially stable in that regard.... >Patrick Draine Patrick, List, Same experience as yours, Patrick. I service numerous U1s' in a university environment, as well as some churches regularly, and usually have adjusted lost motion ever visit (2x per year minumum). This has been going on for many years. Finally got this great idea that serves the same purpose in 15 seconds or less each visit. One season I install a piece of leather under the hammer rest rail stops when the jacks don't return under the hammer butts, then the next season, when there is excess lost motion, I remove it. I do realize there are exceptions to applying this method at face value, but for the most part, it works quite well in the areas under my jurisdiction! Keith McGavern aka McTechtrick Registered Piano Technician Oklahoma Chapter 731 Piano Technicians Guild USA
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