Pinning on new flanges

[Farrell]

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Exactly! Roger Jolly convinced me (and a whole class of other techs) of =
this at one of the PTG conventions. If I recall correctly (I'm sure he =
has an article somewhere on this), he likes to have 5 to 7 grams of =
flange friction (don't quote me on the exact values here). He did a =
number of demonstrations with varying flange friction. Even I could hear =
the difference! In fact, he does a lot of his voicing with repinning =
hammer flanges! He sat down at the piano, played and listened to all the =
notes in a given section, identified which ones had loose pinning (and =
by loose, I mean anything less than 5 grams of friction), and then =
manually checked the friction of the flanges. Any of you who know Roger =
- well, I don't have to tell you how many he got right!

Terry Farrell

www.farrellpiano.com

----- Original Message -----=20
From: "Richard Brekne" <Richard.Brekne@grieg.uib.no>
To: "Pianotech" <pianotech@ptg.org>
Sent: Tuesday, August 24, 2004 4:37 AM
Subject: Re: Pinning on new flanges


> I dissagree completely on this point. I find, especially in heavier=20
> tenor and bass hammers, that whatever is gained by the reduced =
friction=20
> is more then lost with a less stable hammer path.  The hammer wanders=20
> far to much on hard blows when the pins are this loose.  Its easy =
enough=20
> to hear, and I find it easy to identify loose pins this way. Given the =

> maximum amount of power the hammer can reasonable achieve due to a =
host=20
> of other issues, i.e. action compliance, action ratio, etc.etc.etc.... =
I=20
> find it diffucult to swallow that the lessened friction of hammer=20
> flanges that occurs when moving from 5-7 swings up to 8-10 ... or even =

> up to 15 for that matter would be able to contribute significantly to=20
> power in the first place.  The hammer will most certainly be driven to =

> its maximum velocity easily enough regardless.  On the other hand,=20
> reduced stability in hammer path is a significant factor and is easily =

> noticed.
>=20
> JMV
>=20
> RicB
>=20
> Ryan Sowers wrote:
>=20
> > *I personally like 8-10 swings*. I feel you get a better touch.=20
> > /Darrel Fandrich/ convinced me of the value of this.  The important=20
> > thing is that the flanges are *firm.**  *The best way to check this =
is=20
> > to use a straight edge or long shank screw driver and support the=20
> > shanks and slide it back and forth. You will immediatly see the ones =

> > that are too loose because they wiggle.
> >
> > Less friction means more power, lighter touch, faster repetition.
> >
> >
> >
> > *//*
>=20
>=20
> _______________________________________________
> pianotech list info: https://www.moypiano.com/resources/#archives
> 
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