Piano Forum

Piano Board => Instruments => Topic started by: pletnev2004 on May 03, 2005, 03:16:44 AM

Title: Agraffes for Upright pianos
Post by: pletnev2004 on May 03, 2005, 03:16:44 AM

Dear All:

 A question, Yamaha U5 and kawai k80 both use the Agraffes structure which is usually used in grand pianos.

Is that necessary for the upright? What is the adwantage to use this kind of structure?

Thanks!

Title: Re: Agraffes for Upright pianos
Post by: Brian Lawson, RPT on May 03, 2005, 06:22:45 PM

Generally for better quality pianos the manufacture will use agraffes, Bechstein was always using them in their uprights from 19th century.  Its done by designers to add better tone to the piano.

Title: Re: Agraffes for Upright pianos
Post by: pletnev2004 on May 04, 2005, 01:42:54 AM

Thanks!
Does Agraffes affect the touch of the piano?
Recently, I tried Yamaha U3 and U5.
U5 use Agraffes, but U3 not.
I find they two have different touch!
Why!

Title: Re: Agraffes for Upright pianos
Post by: eins on May 04, 2005, 05:32:46 AM

Could someone please explain to me what agraffes are? What are they designed to do? Thanks.

Title: Re: Agraffes for Upright pianos
Post by: Brian Lawson, RPT on May 04, 2005, 05:53:44 AM

The bass stud that the wire goes through that terminate the speaking length of the string.

(https://www.stevespianoservice.com/brokenagraffe.jpg)

Title: Re: Agraffes for Upright pianos
Post by: eins on May 04, 2005, 06:28:59 AM

Thanks Brian. So I assume these studs are more effective doing this than the sets of pins that are used otherwise?

Title: Re: Agraffes for Upright pianos
Post by: Piazzo22 on May 21, 2005, 02:16:03 AM

Quote from: Brian Lawson, RPT on May 03, 2005, 06:22:45 PM

Generally for better quality pianos the manufacture will use agraffes, Bechstein was always using them in their uprights from 19th century.  Its done by designers to add better tone to the piano.

August Förster too. I´ve a 1912 big upright with agraffes.