Tuning Pin Size Sorting Results

[G GRAVINA]

Gordon,

Thanks for sharing the results of your tuning pin sort.

 From .290 to .293 is actually pretty good.  What brand pins are they?

Jerry Gravina, RPT
Babylon, NY


At 09:37 AM 08/07/2002 -0500, you wrote:
>Hello Jerry, Terry, Newton, Joe and all others that contributed to my
>post on tuning pin sizes.  I sorted the box of 4/0 pins last night
>and the results are as follows:  I believe a 4/0 pin dia. should be
>.291 and the sorted batch came out with 6 size groups:
>
>.290 about 30% of the box
>.289 about 20 % of the box
>.288 about 20 % of the box
>.291 about 15 % of the box
>.292 about 10 % of the box
>.293 about   5 % of the box
>
>So as I believe Terry said there could be 6 size groups and Jerry
>suggests 3 to 4 groups.
>
>If I combine the .293 and .292 for the bass;  .291 and .290 sizes for
>the tenor; and the .289 and .288 for the treble I should pretty much
>have the pins divided up across the strings.
>
>I found one pin that was .287 at the bottom and .292 at the top of
>the threads, it would roll on a table top is a very wide arc, so I
>threw this one out, but all others were straight.
>
>Another point I picked up at The Charles Walter Piano Company here in
>Elkhart, IN.  They dump the box of pins in a strainer basket that is
>in a little larger pan of denatured alcohol, lift the strainer basket
>out, let the pins drain dry and then install the pins.  They do not
>check the pins for size.  They feel that the alcohol cleans the pins
>and have followed this procedure for some time.  I saw this being
>done while visiting on the production line.  Any comments on this as
>I've not read or heard of this procedure before.
>
>Any further comments or suggestions on my sorting results?
>
>Regards, Gordon Holley, Goshen, Indiana (Sister community to Elkhart)