Over-Strike vs Under-Strike

[Joseph Garrett]

Not!! If anything is will "scruff" away from the line of force, i.e. away from it's axis, IMO. UNLESS there is overstike and then it will toward the axis. This will lead to a tendency of breaking shanks, as well.

Joseph Garrett, R.P.T.
Captain, Tool Police
Squares R I


----- Original Message ----- 
From: Steve Fujan 
To: joegarrett at earthlink.net;Pianotech List
Sent: 11/24/2006 9:47:46 AM 
Subject: Re: Over-Strike vs Under-Strike


Shifting slightly to the concept of scruffing...    The hammer contact will always "scruff" towards the hammer pivot axis (unless the pivot axis could somehow lie in the plane of the string).   The closer the pivot axis is to the string, the less "scruffing" will occur. 
Steve Fujan 


On 11/24/06, Joseph Garrett <joegarrett at earthlink.net> wrote:
Upon reading the follow-ups of Jons query, I'd like to wonder which is
which. I've always considered "Over-Strike" as the Downward angle of the
hammer, which would put the hammer Beyond Perpendicular. ??? Am I correct 
on that? If so, then, "Under-Strike" would be, where the hammer does not
achieve Perpendicular, on contact?? The "Over-Strike" hammer, (on an
Upright), would "scruff", (for lack of a better word), downward, at impact. 
The "Under-Stike" hammer would therefore "scruff" upwards.
Do I have all of this backwards? Confused minds need to know what the
consensus is.<G>


Joseph Garrett, R.P.T.
Captain, Tool Police 
Squares R I
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