James: I did put a spring on a dead 1989 D once and I "think" it helped but it wasn't an overwhelming success (not even a whelming success!) Later I removed the spring and put on one of Darrell Fandrich's riblets and the results were better. In certain situations those can have a beneficial effect. dp David M. Porritt, RPT dporritt at smu.edu<mailto:dporritt at smu.edu> From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of James Johnson Sent: Saturday, December 06, 2008 11:03 AM To: pianotech at ptg.org Subject: [pianotech] Soundboard spring 40 years ago my mentor taught me how to install a 58 Chevy V8 valve spring between the back side of the soundboard and a frame crossmember to liven a flat board. Does any still use this technique? I have a customer with an old Knabe grand that has no downbearing in the middle sections of the board and the tone is very thin and nasal. A new soundboard if financially out of the question. After all these years, I don't recall if this technique was effective or not. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech_ptg.org/attachments/20081206/872e3de2/attachment.html>
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