Hi Tension on Kawai

[Don Mannino]

Joel,

The earlier KGs were higher in tension than the current RXs, but I 
don't think quite as high as your observations indicate.  As David 
mentioned, Kawai uses metric wire gauges when marking the bridges, 
and US wire gauges are smaller.  The breaking percents shouldn't 
change much, but the tension will.

Don Mannino


At 09:11 PM 8/2/2006, you wrote:
>List.
>
>I took the string scale from a Kawai KG2 serial #9xxxxx
>that is being restrung.   Just for fun I ran the numbers
>to find some astonishing results.
>
>ie.  Note 82 is at 75% break point with 220 lb of tension,
>Inharmonicity is 7.6.    The scale starts at 14 with .5
>changes every 6 unisons.
>
>The tension remains around the 200 lb range for most
>of the piano.  Highest is 225 (#64) to 136 in the low tenor.
>
>This is amazing to me.   Is this a  normal  range?
>I thought tensions were usually 170 or so.
>Anybody have any info that will put my mind at ease?
>
>Joel
>Joel Jones, RPT
>Madison, WI