Hi Dan, It is quite possible for the key to bottom out before the jack has escaped. See previous postings on action saturation. At 07:55 PM 5/19/2008 -0500, you wrote: >Science please... > >The jack has escaped, the energy has been transfered, "then" the front >rail punching is contacted... > >Where is the science of how the tone is effected by a hard or soft >landing? > >Dan > > >On May 19, 2008, at 7:07 PM, Jon Page wrote: > >> A conical Crescendo punching will focus the tone. >> >> Being a firmer punching there is less compression on a hard blow >> so the dip (after touch) is more even between pp and ff. >> >> The straight-sided Crescendo punchings do not have the same tonal focus >> effect but are an improvement over the standard woven punchings. >> >> At the KC Convention I tested these with a few people at hand. The >> straight-sided punchings improved the tone over the woven punchings >> and the conical-sided punchings were a tonal improvement over the >> straight-sided ones. The conical-shape or tapered sides do make a >> difference. >> >> If you turn it upside down the effect is negated. I've displayed this >> to customer's amazement. >> >> Recently, I received a fairly new studio upright in my shop. I noticed >> that there >> were voicing issues. When I disassembled it, there were woven >> conical/tapered f/r punchings. I knew what some of the voicing problem >> was... some punchings were >> inverted. I placed all the punchings with the narrow side up, problem >> solved. >> >> They are too firm for some pianos causing noticeable impact sound. >> On those pianos the pear green punchings work well. >> >> As for the 3/4" punchings, they do not offer as much support and can >> allow >> the key to rock side to side more easily than the wider ones. I would >> use these >> on a spinet or something else of no consequence. >> -- >> >> Regards, >> >> Jon Page >> > >No virus found in this incoming message. >Checked by AVG. >Version: 8.0.100 / Virus Database: 269.23.21/1455 - Release Date: 5/19/2008 5:04 PM > Regards, Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T. Non calor sed umor est qui nobis incommodat mailto:pianotuna at yahoo.com http://us.geocities.com/drpt1948/ 3004 Grant Rd. REGINA, SK, S4S 5G7 306-539-0716 or 1-888-29t-uner
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