Material Used for Piano's Harps

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Material Used for Piano's Harps #2086688 05/22/13 09:52 AM
Joined: May 2012 Posts: 502 UK G Goof OP 500 Post Club Member
OP Goof 500 Post Club Member G Joined: May 2012 Posts: 502 UK	Looking at a post on a cracked harp I thought I'd find out if materials other than cast iron has/had been used. Essentially all I found was that the American company Winter made pianos/spinets with an aluminium harp, which was about 45% the weight of it's cast iron equivalent. As I read it the company went out of business in the 40ties. One would think that with modern technology an aluminium cast or fabricated harp would be ideal and the cost would not be so much more than the usual cast iron item? I was at Hurstwood Farm pianos in Kent, some time back, and they had partially completed ( played well enough set on the workshop bench), all carbon fiber sound board with a tubular carbonfiber harp. I wonder if, next, they are also going to use Kevlar felt for the hammers?

Re: Material Used for Piano's Harps Goof #2086724 05/22/13 11:17 AM
Joined: Apr 2010 Posts: 2,326 Michigan K kpembrook 2000 Post Club Member
kpembrook 2000 Post Club Member K Joined: Apr 2010 Posts: 2,326 Michigan	Originally Posted by Goof Looking at a post on a cracked harp I thought I'd find out if materials other than cast iron has/had been used. Essentially all I found was that the American company Winter made pianos/spinets with an aluminium harp, which was about 45% the weight of it's cast iron equivalent. As I read it the company went out of business in the 40ties. One would think that with modern technology an aluminium cast or fabricated harp would be ideal and the cost would not be so much more than the usual cast iron item? I was at Hurstwood Farm pianos in Kent, some time back, and they had partially completed ( played well enough set on the workshop bench), all carbon fiber sound board with a tubular carbonfiber harp. I wonder if, next, they are also going to use Kevlar felt for the hammers? Some low-production and one-off pianos have also used steel for the plate. Aluminum never did sound like a good idea, but maybe it was just the implementation. Those pianos were quite unstable. Keith Akins, RPT Piano Technologist USA Distributor for Isaac Cadenza hammers and Profundo Bass Strings Supporting Piano Owners D-I-Y piano tuning and repair editor emeritus of Piano Technicians Journal

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