[link redacted at request of site owner - Jul 25, 2015]

Key Leads and Inertia

John Hartman [link redacted at request of site owner - Jul 25, 2015] [link redacted at request of site owner - Jul 25, 2015]
Thu, 24 Apr 2003 20:15:39 -0400


Don wrote:
> Hi John,
> 
> I can't read the text at the page Please make it larger and less
> curvatious. Thanks.
> 
> At 06:48 PM 4/24/2003 -0400, you wrote:
> 
>>List,
>>
>>Continuing with the discussion about even balance 
>>weight verses even inertia I have another 
>>contribution. Actually a clarification of a 
>>comment I made before. Please see the illustration 
>>on the technicians page of my web site.
>>
[link redacted at request of site owner - Jul 25, 2015]
>>
>>I think this will show what I meant when I said 
>>that the key leads help when you play softly but 
>>hinder when you play at louder dynamics. I got 
>>started thinking about this a few years ago after 
>>seeing a class given by Bob Holf. He described an 
>>experiment he did using a large scale key model. 
>>The gist of the experiment was to discover how the 
>>key reacted to varying force. The key's 
>>acceleration as measured revealed the influence of 
>>inertia.
>>
>>John Hartman RPT

Don,

I made some changes,try again.

John Hartman RPT

John Hartman Pianos
[link redacted at request of site owner - Jul 25, 2015]
Rebuilding Steinway and Mason & Hamlin
Grand Pianos Since 1979

Piano Technicians Journal
Journal Illustrator/Contributing Editor
[link redacted at request of site owner - Jul 25, 2015]



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