bridge pin placement

[Tom Driscoll]

-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On
Behalf Of J Patrick Draine
Sent: Monday, October 06, 2003 8:38 AM
To: pianotech@ptg.org
Subject: bridge pin placement

We all know that bridge pins should bisect the bridge top-bridge notch 
edge. I am finding myself a bit tongue-tied in trying to explain the 
exact problems (and aural symptoms) that occur when this ideal is not 
met. I'm not talking about a pin being way, way out on the notch, 
rather just barely touching the edge (or vice versa). Anyone have a 
nice clear explanation that will help me be more eloquent when trying 
to explain this to a customer who has asked me to evaluate a new 
upright for his purchase?
Thanks,
Patrick Draine

_______________________________________________
Pat,
	Larry Fine has a good illustration in "The Piano Book" of a
poorly positioned bridge pin-notch relationship. One picture tells etc.
etc.-----
	Tom Driscoll