---------------------- multipart/alternative attachment Salutations, I've got some regulation problems on a 50 inch Mason upright from the 70s. I've worked on other Aeolian uprights of that vintage, and some of them have the same problem. The initial problem was that the keys weren't bottoming out on punchings. It seems that it's been that way since new(though they bought it used). There was a huge gap between the bottom of the key and the punching when the key was depressed. This led to hammers blocking, bobbling, and a feel that could only be described as spongy. At my last visit, I added punchings, and improved the feel somewhat, but some of the bobbling is still there. I also had to increase letoff distance in some areas of the keyboard an unacceptable amount to get it to work without hammers blocking against strings. I think that the main problem is that the key height is too great. It was somewhere around 70mm, though I forgot to write it down. More precise measurements are necessary, and they will be forthcoming after my next visit there in January. Blow distance is at 1 7/8(the only thing in the piano that seems at spec...:-), but it doesn't seem to be enough. I tried lowering the key height on a few sample keys by removing balance rail punchings, but there was nowhere near enough aftertouch. Should I try increasing blow distance to 2 inches or more? Any ideas??? Haaalp?? Any input is welcome, Dave Stahl ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/b0/31/5e/be/attachment.htm ---------------------- multipart/alternative attachment--
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