[CAUT] Tuning Hammer tip sizes

[Jurgen Goering]

Getting back to the earlier question of tuning pin specifications: I 
have received the technical information from the German Biene brand 
(formerly known as Fly brand) tuning pins.

The angle of the square taper on these pins is 3.5 degrees.  That is 
per side, so the total angle would be 7 degrees.  Interestingly, for 
very large pins, sizes 5/0 and 6/0, the angle is 4 degrees.   I cannot 
say that this is an industry standard - from my experience, I would say 
that it is not a world wide standard, as some makes of Asian pins seem 
to vary enough to make tuning more difficult for me.

The table I have goes all the way up to sizes 7/0 and 8/0, although I 
have never seen tuning pins that large, nor have I had the "pleasure" 
to tune a piano thus pinned.


Jurgen Goering
Piano Forte Supply
(250) 754-2440
info at pianofortesupply.com
http://www.pianofortesupply.com
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: text/enriched
Size: 895 bytes
Desc: not available
Url : https://www.moypiano.com/ptg/caut.php/attachments/20070129/949d35fc/attachment.bin