[CAUT] Knuckle Direction

[Don Mannino]

It has grain, but it's the same in both directions.

Omni-granial Knuckles.  New term to give to marketing for the advertising, right?

:-)

Don Mannino (from Toronto)

-----Original Message-----
From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Ed Sutton
Sent: Tuesday, June 01, 2010 2:22 PM
To: caut at ptg.org
Subject: Re: [CAUT] Knuckle Direction

I believe Kawai uses escaine, which has no grain!
Don?

Ed S.
----- Original Message ----- 
From: "Jim Busby" <jim_busby at byu.edu>
To: <caut at ptg.org>
Sent: Tuesday, June 01, 2010 4:56 PM
Subject: Re: [CAUT] Knuckle Direction


Hi Paul,

I've heard both arguments "this way and the jack slips out better" and "that 
way and it gets returns better, especially on a soft blow". In a class I 
took years ago (can't remember who but he was good, and it made sense) he 
said his company did a lot of testing and it didn't seem to matter, but that 
they all should be the same.

That being said, I just looked at some new Renner knuckles and they are 
installed so that the jack goes OUT with the grain and returns AGAINST the 
grain. To me this is counterintuitive. I looked at another piano and they 
were backwards from that. Go figure.

I bet Mannino has an opinion because those guys are testing fanatics!

Jim

-----Original Message-----
From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of 
Dempsey Jr., Paul E
Sent: Tuesday, June 01, 2010 1:58 PM
To: pianotech at ptg.org
Cc: caut at ptg.org
Subject: [CAUT] Knuckle Direction

OK, maybe just too much week-end or perhaps old-timers....

I am re-knuckle-ing a set of grand shanks. The new parts are of Able 
manufacture and have a pencil line on each.

Does this line face the flange or the hammer?

I know the line indicates the direction of the nap of the leather, but which 
way is preferable.



Paul E. Dempsey, RPT
Piano Technician Sr.
Marshall University
Huntington, WV
304-696-5418
304-617-1149