[pianotech] Shank questions

[Alan Eder]

Well I have seen them and think they are interesting, but the process by which they are made, 'pultrusion', is not the process that achieves the stiffest result.  



I this case, I don't think they were looking for the stiffest results. In fact there are different wall thickness to achieve the desired stiffness from bass to treble.
Yes, it seems that greater-than-hardwood stiffness was going to be a given, by virtue of the nature of the material.  Would even stiffer than that be even "better"?  In the sense of less energy lost, the manifest difference may only be incremental.


Alan Eder


-----Original Message-----
From: Al Guecia/Allied PianoCraft <alliedpianocraft at hotmail.com>
To: pianotech <pianotech at ptg.org>
Sent: Tue, May 24, 2011 1:00 am
Subject: Re: [pianotech] Shank questions




On May 23, 2011, at 6:40 PM, John Delacour wrote:



At 17:18 -0400 23/05/2011, Alan Eder wrote:


Have you tried or heard about Wessel, Nickel & Gross' composite hammershanks?  They, too, are conducting an experiment, on hundreds (or, maybe by now, thousands) of pianos.  These shanks are very consistent and significantly stiffer than those made of wood.  I just ordered a set.  Some on the list have already tried them.


Well I have seen them and think they are interesting, but the process by which they are made, 'pultrusion', is not the process that achieves the stiffest result.  



I this case, I don't think they were looking for the stiffest results. In fact there are different wall thickness to achieve the desired stiffness from bass to treble.



Al -
High Point, NC





I have discussed the matter with someone at

<http://carbonfibretubes.co.uk/custom.html>

and he is supposed to be sending me samples.  The method they use is not so fast as pultrusion but I think the difference in cost will be slight.

However at the moment I'm interested in general observations on shanks.

JD






 
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