[CAUT] Hammer Alignment

[David Love]

One other thought.  Which direction to they tend to gravitate to and is it
opposite to the way you generally spin them onto the shank?  Do the bass and
lower tenor definitely not twist or might the twist be obscured by the
angled hammers somewhat?  I think you should try this experiment:  Put on a
set of hammers (or a section) by spinning them on (always in the same
direction) and put a set on by pressing them into position without spinning.
I wonder if there isn't something about spinning the hammers onto the shank
(especially with hide glue as it tends to thicken as you are spinning) that
might not contribute to eventual creep back in the opposite direction of the
spinning.  I don't find this kind of twisting and I do use hide glue, but I
also press the hammer onto the shank rather than twist or spin it on.  Just
a thought

David Love
davidlovepianos at comcast.net 

-----Original Message-----
From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Jon
Page
Sent: Monday, March 27, 2006 6:20 PM
To: caut at ptg.org
Subject: [CAUT] Hammer Alignment

 

>Do they always end up twisting in the same direction?

yes

 

>One thought is that if you burn the shanks for straightening at the initial
installation and >you hold the heat gun, say, in your right hand, you might
be heating one side of
>the shank more than the other which might create some unequal tension in
the

>shank that might play out over the period of a few weeks or months.

 

Burning-in is done with an alcohol flame from underneath the shank. There
are

never many needing this at installation.  And why doesn't the bass twist???

-- 


Regards,

Jon Page

-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://www.moypiano.com/ptg/caut.php/attachments/20060327/e00e7191/attachment.html