This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment I have several comments about this. First when you say drive them back = in, I'll presume your not using a hammer? right?=20 That crossed my mind also Dale. Maybe he mean drive them in with a = screwdriver thingee. Del? The other thought is if you 'all are using acu-just hitch pins=20 Not accu-just, but vertical, yes. My understanding is that the accu-just = are a bit different (been a while since I've seen one). then the type of plate suspension system isn't all that critical as one = can adjust the bearing on the board without moving the plate, especially = if the plate was installed in a fairly reasonable elevation. You would think. But you don't really want the string more than 5 mm or = so above the plate and you need it a bit off the plate, so you really = only have a few millimeters of up or down adjustment. So you really need = to get the plate very near an ideal height - the pins don't really allow = all that much adjustment. I find myself adjusting the plate height just = as close to ideal as I did before using the adjustable system. =20 If one is not using acu-just then it seems to me using a plate = suspension system has a greater potential for functionality in adjusting = downbearing after the plate is strung. However. Even if an adjustable = system is used with conventional hitch pins the lattitude for lowering = the plate has limitations.=20 The first being lowering the plate behind the bass bridge. A small = downward adjustment of the plate here can provide way more bearing than = is wise.on heavily tensioned bass strings, so the suspension system is = limited here unless bass string bearing felts .bars etc are readjusted = to higher location. Possible, but a bit annoying. Well, speaking for myself, all the pianos I have put the adjustable = plate suspension system one also got a new soundboard. I find that I am = usually adjusting the plate upwards rather than downwards from the = original position - largely because of the increased crown of the new = soundboard. Also an adjustment at the highest treble plate bolt location also has = limitations in any system, as I see it , the stiffness of the plate = flange bolted to the block & the unwise application of to much = rotational stress on same if that highest bolt is forced more than a = small amount. Too much here induces a continual strain that may bite = back in some form.ie. broken plate ,block pulled loose. But hey small = amounts are often all that's needed. Indeed, I think most changes are small. But here again, if you are = replacing the the pinblock, you don't have to exactly duplicate the = original placement if you are going to be moving the plate a tad. Put it = where it is needed and at the angle needed. In my first encounter with using an adjustable Coleman plate suspension = system allowed me to apply much needed bearing on a piano that I had = miscalculated bearing load upon. That instance also required some = shimming of duplexes etc to get the desired tonal outcome in one section = & dimish it it in another & I'm happy to say in that instance it saved = my behind & the gnashing of teeth of course. The piano sounded grand? of = course...... =20 Dale Erwin I looked at his system a couple years ago at a convention, but I forget = the details now. How does his system differ from what I posted? Terry Farrell I'm going to pull the top 4 or 5 bolts up high enough to clear the = inner rim/soundboard, lower the plate to the desired elevation and drive the = bolts back in. I have no plans to lower pitch first. Although I might = mention that this piano does have relatively low tension scale and Baldwin plates = are generally on the robust side. Del=20 ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/ca/34/2c/aa/attachment.htm ---------------------- multipart/alternative attachment--
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