[pianotech] Fwd: Erwins key dip gauge

[David Andersen]

100% agree with this as well. Great thread.
DA


On Feb 28, 2009, at 4:01 AM, Al Guecia/AlliedPianoCraft wrote:

> Ric, I couldn't agree more. Proper key height is the "key" the gain  
> entrance to proper regulating. I have seen so many regulatings  
> compromised because of improper key height.
>
> When I was a regulator at Steinway, they insisted on the proper  
> backrail felt & key height. That is the reason they glue the back  
> rail felt on one side only. To be able to adjust the backrail felt  
> height also. Set the proper key height for each action and all other  
> adjustment fall into place.
>
> Al
>
>
>
> --------------------------------------------------
> From: "Richard Brekne" <ricb at pianostemmer.no>
> Sent: Friday, February 27, 2009 8:22 PM
> To: <pianotech at ptg.org>
> Subject: Re: [pianotech] Fwd: Erwins key dip  gauge
>
>> Excellent point Dale. And one grossly overlooked in most action  
>> work. Boils down to a few other <<starting points>> we generally  
>> don't mess with or try to gain an understanding of. Namely how  
>> thick does the back rail felt need to be, what that requires in  
>> terms of key height at the front of the key, and how this all  
>> positions the key itself relative to the whippen.  For eks... does  
>> one want the key level at rest or does one want the key to be level  
>> at half blow.... and in each case why ? Key travel is really a  
>> better concept then key dip IMHO. But then we so often take it as  
>> given that the key at rest is in its optimal position or that key  
>> height is optimal..... neither of which is necessarily the case.  
>> For me... depends on how picky I want to get I suppose... but  
>> generally I stick with whats in front of me... level the keys to  
>> whats spec if thats available, what looks to put the key level at  
>> half blow if specs are not... then as mentioned earlier start with  
>> a rough 10 mm dip and proceed as per earlier posts.
>>
>> I generally do not follow any curvature in string height if thats  
>> what you are after..... but I can if its called for and paid for.
>>
>> Cheers
>> RicB
>>
>>
>>   I'm always surprised nobody asks this, but where are you all
>>   measruing max keytravel/dip & how? It makes a difference.  I
>>   remember Little red school house but I don't want to give it away.
>>   Besides not every one measures it the same way.
>>   Nice post Andre...Such Passion!
>>   Luv it
>>   Dale
>>
>>
>>
>>
>