Hi there Robert. Sounds familiar to me. Petrof tuning pins and blocks have kind of a funny feel to them and have always been pretty inconsistant.... and on the loose side. I replaced a split plank a couple years back with some standard 30 ply material and was appaled at what I took out. This was on a 6 footer to be sure but still. The block was rather poorly fit as well, tho tuning pin bushings are supposed to allow for this. Stability has always been a problem with Petrofs in my experience, but the installation of a standard DC unit has helped IMMENSLY !!! with the two we have at the University. One is a 220 or so, and the other is a full sized concert. High coils is also typical Petrof, and I just bang em in. This makes tuning easier, tho I havent experienced that it makes much difference to stability issues. I have a wholllle lot of Petrof tunings under my belt. Ricb > Hello, > > I would like to inquire if anyone else has > observed excessive flag poling of Petrof tuning > pins. The piano: Model III. The place: > Caesar's Palace in Las Vegas. The piano is > heavily used for moderate Jazz, (6-12 hours a > day), in a lounge. The piano is tuned twice per > week. > > Stability seems to be a problem. This piano has > an open faced pin block which means that the > pins stand upright and do not lean back as in a > conventional design. The coils stand 1/4" - > 3/8" above the block. The hypothesis is that > the pins may be bending excessively due to the > high coils, making setting the pins more > difficult. > > A possible cure would be to simply set the pins > deeper into the block, although this is > speculative theory, (particularly since this is > how it was designed). Additionally this would > add friction to the pins which may contribute or > create a new problem. > > Anyone experienced with this piano and had > similar problems? If so what solution? > ------------------------------ > > Rob Goodale, RPT >
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