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PianoDisc #2859687
06/17/19 05:35 PM
06/17/19 05:35 PM
Joined: Oct 2013
Posts: 334
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Sanfrancisco Online blank OP
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Sanfrancisco  Online Blank OP
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I've got a friend considering a new Hailun 178 and would like to put a PianoDisc system on so she can play it when practicing in a "silent" mode. I explained to her that the action could be adversely effected even with the new regulation. Does anyone know how much let-off will be increased (in inches or mm) with the addition of the PianoDisc sensor rail?

Last edited by Sanfrancisco; 06/17/19 05:37 PM.
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Re: PianoDisc [Re: Sanfrancisco] #2859951
06/18/19 10:22 AM
06/18/19 10:22 AM
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Sanfrancisco Online blank OP
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Correction above: ...... how much let-off will be increased (in fractions of an inch) with the addition of the PianoDsc hammer shank stop rail?
Also I read contradictory information on degrading effects on the trapwork- any experience with this?

Re: PianoDisc [Re: Sanfrancisco] #2859956
06/18/19 10:30 AM
06/18/19 10:30 AM
Joined: Apr 2016
Posts: 372
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I have a retrofit PianoDisc Quiet Time in my old Sauter piano and I cannot notice any difference when I am playing the acoustic instrument in comparison to the former situation without the silent system. I think it all depends on the expertise of the technician.

Re: PianoDisc [Re: Sanfrancisco] #2860066
06/18/19 02:31 PM
06/18/19 02:31 PM
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Sanfrancisco Online blank OP
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https://www.pianodisc.com/wp-content/uploads/UserGuides/GP%20MuteRail%20one%20(2-14-17).pdf

Above is the PianoDisc mute rail installation guide with several photo's of the mute rail. I conservatively estimate it's thickness at 1/4" (not including the foam strip). My piano was delivered with a sloppy letoff which varied at around 3/16". I reduced it as low as possible, averaging 3/32" (just outside the range of string vibration). The improvement in dynamic action was marked, notes that I had not yet regulated felt sloppy and in comparison difficult to play pp.
If this mute rail was installed perfectly on my piano today letoff would then be about 50% greater than it was when I got it and almost 3x what I have presently.. In an area where small increments make a big difference, I think this would be an action game changer. Is there way I am not aware of that PianoDisc installers got around this?

Last edited by Sanfrancisco; 06/18/19 02:37 PM.

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