Hi Terry Boy are we on the same rollercoaster. I just got done doing a hammer replacement on a Bluthner here at school. Someone had replaced these hammers a few years back and had really managed to muck up the bore length. A couple <<clues>> were drop screws turned up as high as possible and still too much drop, hammer rest rail at 48 mm from strings !!... ie a reallllly short stroke. These hammers were so worn down it was impossible to be sure of the origional bore length, but after boring to 53 mm for the new hammers I had to lower everything like drastically. Seems like many techs doing this kind of work still dont know how do deal with finding the proper bore length. My best guess on this one was that whomever just guessed at the bore length based on a worn down set of hammers. Cheers RicB ------------------------------- I experienced a new low today. I did a bunch of work on a 6' Hyundai = action (10 yo) and was set to do a bench regulation. Using my = pre-measured string heights, I found that I obviously made a gross = mistake with my measurement somehow. So I drove the 40 miles back to the = piano and re-measured - my original measurements were correct. The = hammers on this thing were bored to produce a full quarter-inch = overstrike. What are the correct words here - this is amazing - did they build all = their pianos this way? Don't they just have some jig in the factory = where all hammers for this model are drilled the same way? Did = somebody's finger get in there and jacked the jig up a quarter inch? Has anyone ever seen anything like this? Maybe I just haven't been = around long enough! Terry Farrell
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