Grand Hammer Flange Center Friction

[Farrell]

Thanks Roger.

Terry Farrell
  
----- Original Message ----- 
From: "Roger Jolly" <baldyam@sk.sympatico.ca>
To: <pianotech@ptg.org>
Sent: Thursday, May 16, 2002 6:33 AM
Subject: Re: Grand Hammer Flange Center Friction


> Hi Terry,
> 
> Wow that's high. 4 gms. That's about 4 swings.  The test I use is the one
> that many Yamaha tech's use.   The shank and flange should hold horizontal
> under it own weight,  the flange should then drop smartly ( not creep,
> that's too tight) with the addition of the flange screw. Once you get to
> really know your broaches, you just know the feel of the desired friction.
> Another tip listen carefully when repinning, (before and after), you can
> train yourself to hear a lack of friction.
> 
> Regards Roger
> 
> At 07:40 AM 5/16/02 -0400, you wrote:
> >Roger Jolly - are you using 5 - 7 grams friction in the hammer flange
> centers as a general target? I know you like your centers a bit tighter
> than some recommend. How many swings does that come out to? Thanks.
> >
> >Terry Farrell
> >
> >Oops - sent originally with Yamaha flange cord subject line.
> >
> Roger Jolly
> Balwin Yamaha Piano Centres.
> Saskatoon/Regina.
> Canada.