Hi, Ed,
Another great post. Thank you very much.
Hope that all is very well with you and yours.
Horace
On 10/28/2022 3:06 AM, Ed Whitting via Piano Technicians Guild wrote:
> Dear Scott,
>
> This response does not address Tokai pianos. Rather, it is directed to David Graham's reference: Heating any finish-coating such as lacquer in a felt bearing surface. As David describes the symptom of the core issue comes and goes making it difficult to assess.
> The area I find the finish-coating pedal squeaking issue is on Kawai and Boston pedal lyres at the vertical pedal rod/felt bushing contact. Other brands may have a coating in this area as well. When this squeak happens it has been the sustain pedal. The report of an intermittent 'squeaking pedal' is really the rod finish(Lacquer?) being heated through use and transferred to the bushing felt. The resultant squeaking is intense as the two bearing surfaces both have a finish-coating rubbing against each other. As the bearing surfaces cool the squeaking almost goes away. Upon disassembly and careful removal of the bushing does one notice a color transfer from the rod coating to the felt bushing. The permanent fix is a two step process
> 1. Replace the bushing felt, use a thick glue that will not permeate the felt, note the orientation of where the old felt edges met and duplicate the manufactures installation.
>
> 2. Remove the finish-coating from the rod with acetone and a rag, for appearances, mask off and only do this in the bearing surface area of the rod: about 3 inches. I feel better applying McLube 444 to the rod but don't think it is necessary.
>
> If you are wondering about this subject have a look at the new Steinway lyre rods.
>
> For a temporary fix such as before a performance, etc.: Marfak grease or Lubriplate Multi-purpose grease. Other products might work for an entire concert, these will.
>
> Ed Whitting, RPT
> Professional Products & Services, Inc.
> 24392 Peacock Street, Lake Forest, California 92630
> Cell 714-501-4717, Office 949-830-6847, FAX 949-830-1392
>
>
>
> -------------------------------------------
> Original Message:
> Sent: 10/26/2022 5:30:00 PM
> From: Scott Cole
> Subject: Tokai grand damper issues
>
> Hi everyone,
>
> I have a customer who recently acquired very small Tokai grand. Recently, she says the dampers get hung up, but only after she's been playing it for an hour or so. This sounds suspiciously like similar problems with Sammick/Young Chang. When I tuned it a couple of months ago, I didn't notice any problems.
>
> Anyone have any experience with Tokai? Is this a center pin issue with the damper flanges? Any suggestions as to what to look for when I go back?
> thanks!
>
> ------------------------------
> Scott Cole, RPT
> rvpianotuner.com
> Talent, OR
> (541-601-9033
> ------------------------------
>
>
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Original Message:
Sent: 10/28/2022 6:07:00 AM
From: Ed Whitting
Subject: RE: Tokai grand damper issues
Dear Scott,
This response does not address Tokai pianos. Rather, it is directed to David Graham's reference: Heating any finish-coating such as lacquer in a felt bearing surface. As David describes the symptom of the core issue comes and goes making it difficult to assess.
The area I find the finish-coating pedal squeaking issue is on Kawai and Boston pedal lyres at the vertical pedal rod/felt bushing contact. Other brands may have a coating in this area as well. When this squeak happens it has been the sustain pedal. The report of an intermittent 'squeaking pedal' is really the rod finish(Lacquer?) being heated through use and transferred to the bushing felt. The resultant squeaking is intense as the two bearing surfaces both have a finish-coating rubbing against each other. As the bearing surfaces cool the squeaking almost goes away. Upon disassembly and careful removal of the bushing does one notice a color transfer from the rod coating to the felt bushing. The permanent fix is a two step process
1. Replace the bushing felt, use a thick glue that will not permeate the felt, note the orientation of where the old felt edges met and duplicate the manufactures installation.
2. Remove the finish-coating from the rod with acetone and a rag, for appearances, mask off and only do this in the bearing surface area of the rod: about 3 inches. I feel better applying McLube 444 to the rod but don't think it is necessary.
If you are wondering about this subject have a look at the new Steinway lyre rods.
For a temporary fix such as before a performance, etc.: Marfak grease or Lubriplate Multi-purpose grease. Other products might work for an entire concert, these will.
Ed Whitting, RPT
Professional Products & Services, Inc.
24392 Peacock Street, Lake Forest, California 92630
Cell 714-501-4717, Office 949-830-6847, FAX 949-830-1392
Original Message:
Sent: 10/26/2022 5:30:00 PM
From: Scott Cole
Subject: Tokai grand damper issues
Hi everyone,
I have a customer who recently acquired very small Tokai grand. Recently, she says the dampers get hung up, but only after she's been playing it for an hour or so. This sounds suspiciously like similar problems with Sammick/Young Chang. When I tuned it a couple of months ago, I didn't notice any problems.
Anyone have any experience with Tokai? Is this a center pin issue with the damper flanges? Any suggestions as to what to look for when I go back?
thanks!
------------------------------
Scott Cole, RPT
rvpianotuner.com
Talent, OR
(541-601-9033
------------------------------