Tuning Pin Sizes

[larudee@pacbell.net]

Terry,

I think the 1/2 /0 is supposed to be .271".  The sizes are somewhat approximate
because of differences between metric and English and because of some
inconsistencies in manufacture, so that one batch of pins can have diffences of
up to .003" between the smallest and the largest in a set.  On the other hand,
some manufacturers, like Klinke, are extremely consistent.

Yamaha and Kawai both use a 6.90mm. pin, which corresponds to 1/2 /0.  However,
the Yamaha pin is also very very slightly tapered.  I forget exactly how much,
but I think it is about .10mm. per inch.

Paul

Farrell wrote:

> Good info Joe. Thanks. One clarification though: 1/2 /0: 276" : 1/0:
> 276"  - are these two size designations really the same diameter, or is
> there a typo here? What size is used on new Yamahas?
>
> Terry Farrell
>
> ----- Original Message -----
> From: "Joseph Garrett" <joegarrett@earthlink.net>
> To: <pianotech@ptg.org>
> Sent: Saturday, January 26, 2002 9:17 PM
> Subject: Tuning Pin Sizes
>
> > All,
> > Throughout all the discussion about tuning pins, no one has asked how many
> > sizes of pins there are/were. To clarify, there are many sizes: #2: .260"
> ;
> > #1: .265" ; 1/2 /0: 276" : 1/0: .276" ; 2/0: .282" ; 3/0: .286" ; 4/0:
> .291"
> > ; 5/0: .296" ; 6/0: .301 ; 7/0: .306" (no longer available)(thank god!).
> > I have a square grand that was re-strung with what I would have to call an
> > 8/0 pin. That one is a real bear to tune, as the "antique" tuning tip that
> I
> > have, (marked #4), just barely will fit! (FYI the olde #4 tip was much
> > larger than the current #4).
> > O.K., now you all have the necessary ammunition to discuss pins. Please
> use
> > the proper nomenclature, as I have seen a few posts calling #1/0 pins as
> #1
> > pins. Most confusing.
> > Regards,
> > Joe Garrett, RPT, (Oregon)
> >