Yamaha U1 touchweight

[Jon Page]

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The easiest way to increase touchweight on an upright is to install Jiffy=20
Leads.
The benefit of these is that they are equally easy to remove or alter their=
=20
position.

Make sure the action is properly regulated so as to be certain that weight=
 is
actually all that is desired. I think it was mentioned that having the=20
dampers lift
a little sooner will add their resistance sooner in the keystroke thus raise=
 th
  touchweight,  check the damper spring tension as well as well as the jack=
=20
spring
and hammer return springs.

Regards,

Jon Page


At 08:01 AM 11/03/2000 -0600, you wrote:
>These last two posts refer to whippen/key leverage.  You can tilt the=
 action
>changing the whippen felt to capstan contact point which will change
>touchweight.  On Baldwins and other brands where the action sits on thinner
>posts, you can actually bend the post front to back changing the leverage.
>We're talking slight. This works.  However, on the Yamaha's this is
>impossible (short thick stubby screw on a wooden base) without removing the
>post and the wooden base it sits on (filling screw holes and redrilling)=
 and
>repositioning the base itself in new screw location.  This process makes it
>hard to experiment with different positions.  Again, it works.  By tilting
>the botton of the action away from the key the action is heavier..like
>pushing someone further out on a seesaw.  But we're not talking much, keep
>an eye on whippen felt to capstan contact through the stroke and consider
>wear, etc.  I do not believe this affects repetition.  The solder idea has
>worked well, too.  Have fun, but be cautious!
>
>Lance Lafargue, RPT
>Mandeville, LA
>New Orleans Chapter, PTG
>lancelafargue@bellsouth.net
>
>
>
>-----Original Message-----
>From: owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org]On Behalf
>Of Kristinn Leifsson
>Sent: Friday, November 03, 2000 5:34 AM
>To: pianotech@ptg.org
>Subject: Re: Yamaha U1 touchweight
>
>
>What about this,
>
>for increasing leverage on the *whippen*, manipulate the capstan wire (if
>present) in such a way that the capstan touches the whippen closer to you
>than it did before.
>Would you think this to be a bad idea?
>It wouldn=B4t have to be really tipped or anything but I wonder if this=
 would
>increase the wear and tear on the overlying felt.
>
>
>Best regards,
>
>Kristinn Leifsson,
>Reykjav=EDk, Iceland
>
>
>
>At 11:50 3.11.2000 +0100, you wrote:
>
>
> >A trick I just ran into has to do with foosking around with the balance
> >point of
> >the key. As I understand it if you want to increase leverage (lighten
>touch)
> >take a half of a felt balance rail punching and glue it on balance rail
>around
> >the back side of the balance pin. If you want to decrease leverage=
 (heavier
> >touch) do the opposite. Have never tried this so I have no idea how it
>works.
> >--
> >Richard Brekne
> >RPT, N.P.T.F.
> >Bergen, Norway

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