Tuning Pin Angle

Farrell mfarrel2 at tampabay.rr.com
Mon Apr 30 20:37:05 MDT 2007


I'm stringing an 1890s open-faced-pinblock Knabe grand. The strings come off a bearing bar on the plate to the tuning pins at angles ranging from 2 to 8.5 degrees (the steeper angle is for the pins closest to the capo bar).

Fortunately I have graduated beyond the realm of drilling all tuning pins at some magic 7 degrees or whatever. 

My general feeling is to drill the hole at the exact angle that will initially orient the pin perpendicular to the string. My thoughts are that perpendicular will not encourage the coil to loosen, nor will the string tend to cross over the coil. But of course, over time, there will be some tendency for the pin to lean forward (hopefully not much on my Delignit-capped block) a bit anyway. And of course, over time the tuning pin will be screwed downward into the block - both motions tending to make some acute angle with the string and the pin top - which will tend to keep the coil tight - and hopefully not enough angular change to create a situation where the string wants to run up over the coil.

That's the way I see it. What do others have as a preference for tuning pin angle relative to string angle?

Terry Farrell
Farrell Piano

www.farrellpiano.com
terry at farrellpiano.com
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