Another non-related click, this time in a 1923 Grinnell Bros. upright. I was called back to remove an extremely hard to hear action click that showed up when the piano was used in a recording session. It was in C#4. We determined it was in the lower half of the action. I checked center pins, glue joints and lubricated this and that, to no avail. The click went away when I removed the half of the bridle strap fastened to the wire. Many straps torn in half. The pianist removed a couple of other straps and was elated that clicks HE heard went away. The 92 year old brittle bridles were clicking against the wires. Learn something new every day. This after 40+ years. Filed away in my click bank!
Gary Doudna RPT
Registered PianoTechnician
920-839-5007
------Original Message------
Thank-you Ed,
Here is another cause of tick I would like to mention. It is non-related, but was very difficult to solve, and I may have been the cause...
I can't begin to describe how subtle this effect was - the pianist/owner could only hear and demonstrate it with a particular musical passage. I simply couldn't hear it, until I held my head in a certain way, then we were both fixated by it.
It took three service calls to resolve, partially because this was a very-costly new instrument - I was trouble-shooting with maximum fear, and the least invasive methods possible. Once I was able to provoke the effect on my own, it seemed isolated to the dampers - about a dozen of them throughout the compass.
I tried swapping/comparing neighboring-parts, and every manner of treatment and careful examination of the offending notes imaginable. In the end, replacing the guide-rail bushings seem to resolve the issue - at very least, we've made it ten months tick-free. (pet-owners got that?)
As to the cause - I have used pretty much the same routine for pre-servicing, and maintaining damper-systems for many years - sizing guide-rail bushings with a heated broach (Susan Graham?), treating them with CLP or Pro-Tek, and coating damper-wires (removed) with Mc Lube 444. I love this routine, the benefits are long-lasting, and I've never had a concern.
However in this situation I suspect it was the treatment of the guide-rail bushing cloth that caused this effect - an almost indiscernible tick or buzz, during the key-release, prior to damper/string contact. There was no visible contamination or flaws in the cloth, no signs of singeing, and the bushings weren't glued-in, so no wicking.
Sorry, I don't remember whether I had used CLP or Pro-Tek, and I'm not suggesting there is anything wrong with either product. Only that from here on in, I am only applying friction treatment to the wires.
Recently I shared this experience with a concert-technician and mentor who used to advocate applying Pro-Tek to the bushings via the wire. He no longer recommends this, after suspecting similar issues.
FWIW,
Mark
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Mark Cramer
Brandon MB
204-727-2350
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Original Message:
Sent: 08-30-2015 21:09
From: Edward McMorrow
Subject: Ticking/Clicking Sound
And the WINNER IS.....................Mark Cramer!!!!!
Congratulations!
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Edward McMorrow
Edmonds WA
425-299-3431
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Original Message:
Sent: 08-24-2015 10:55
From: Mark Cramer
Subject: Ticking/Clicking Sound
David,
Check the fit of the wooden, cloth-covered bearings that the keys balance on. If they are loose they can click. You can re-size the wooden part with glue-water, same as re-sizing a balance hole. careful not to wick any glue up into the felt, or...
Mark
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Mark Cramer
Brandon MB
204-727-2350
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