[pianotech] Easing Balance Holes : Kawai KG-1E

Noah Frere noahfrere at gmail.com
Sun Oct 9 07:47:29 MDT 2011


I was thinking the same thing,

On Sun, Oct 9, 2011 at 8:00 AM, Avery Todd <ptuner1 at gmail.com> wrote:

> Don,
>
> What am I misunderstanding here? Shouldn't it be just the opposite,
> ie, freely drop in dry weather and barely slide during humid? If it barely
> slides during dry, it's going to tighten up more during humid and be too
> tight. Right? Straighten me up here if I'm wrong. Hmmm..
>
> Avery Todd
> Houston, TX
> On Sat, Oct 8, 2011 at 4:38 PM, Don Mannino <donmannino at ca.rr.com> wrote:
>
>> Paul,
>>
>>
>> The ideal easing is for the key to slide down slowly, but keeping in mind
>> the humidity is important.  In variable climates like yours, during very
>> dry
>> weather ease it so that the key barely will slide back down the pin.
>>  During
>> humid weather, it should fall freely.
>>
>> This method makes the keys with more lead weights slightly tighter.
>>
>> Don Mannino
>>
>> -----Original Message-----
>> From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On
>> Behalf
>> Of Paul Milesi
>> Sent: Saturday, October 08, 2011 1:00 PM
>> To: PTG Pianotech List
>> Subject: [pianotech] Easing Balance Holes : Kawai KG-1E
>>
>> I am working on a 1991 Kawai KG-1E (5'4") in a church.  Among other
>> things,
>> I replaced key bushings.  While easing keys, I realized that the balance
>> pins are installed perfectly perpendicular to the rail, rather than angled
>> back.  Should this change my approach to easing the balance hole?  I was
>> taught to lift the front of the key anywhere from 1/4" to 1" while the
>> back
>> of the key rests on the back rail, and to ease for free fall of the key.
>>  It
>> seems to me that on any piano, at some point lifting too far and easing to
>> allow for a freely falling key will cause chucking (pulley key).  In this
>> particular case, does having the pins perpendicular require less, or no,
>> lifting at the front, but rather lifting front and back of the key to
>> check
>> balance hole fit?
>>
>> Hoping Don Mannino might be watching....
>>
>> Paul Milesi RPT
>> Washington DC
>> (202) 246-3136 Cell/Text
>> paul at pmpiano.com
>> http://www.pmpiano.com
>>
>>
>>
>>
>>
>
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