Steinway underlever spring tension

[Lance Lafargue]

I will do as Ed mentioned leaving the springs just barely sitting in the
slot.  I did finally find the archive info. After getting one like I like it
I may use a gram scale to get them consistent, but I don't think this will
be rocket science like I thought.  Thanks to all that responded.

Lance Lafargue, RPT
Mandeville, LA
New Orleans Chapter


-----Original Message-----
From: owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org]On Behalf
Of Lance Lafargue
Sent: Thursday, August 19, 1999 6:33 PM
To: pianotech@ptg.org
Subject: RE: Steinway underlever spring tension




Thanks Jon...Next time, though.  I'm overdue here, the customer is more than
anxious and I am late and over budget on both parts and time put in.  I've
got to make this work.  I will look into back actions now that I've seen the
presentation, but it has to be on the next action.  Thanks again.

P. S.  Can you tell me why the tabs in particular are such an improvement?
I'm wondering what this one was like in 1913.

-----Original Message-----
From: owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org]On Behalf
Of Jon Page
Sent: Thursday, August 19, 1999 1:55 PM
To: pianotech@ptg.org
Subject: Re: Steinway underlever spring tension


Lance,
It is well worth the effort to replace the back action as well.
The spring-loaded sostenuto tabs make all the difference in the world.
I would say that it is as important as replacing wippens.

With the Renner USA Underlever Kit is very easy to make a duplicate rail.

In the back of the instruction booklet which accompanies the kit is
a list of suggested tensions.

Regards,

Jon Page

At 07:23 AM 08/19/1999 -0500, you wrote:
>
>
>List,
>
>I am rebuilding a Steinway model O, 1913.  I've replaced the action with
all
>Renner and I'm using the old back action (damper system) since it is in
very
>good condition.  I have prepped it, reinstalled it and I've gotten the
usual
>too heavy touchweight due to the spring tension on the underlevers.
>
>I plan to put the system back on the workbench and use a small digital
scale
>to weigh-off each underlever, setting the spring tension on each
underlever.
>Does anyone have any guidelines/gram #'s on what I should shoot for to get
>good weight and good damping?  I attended the Renner all-day class in K.C.,
>but neither my notes nor memory recall specific instruction on this.  In
the
>past I have weakened them and guesstimated it.  Thanks in advance.
>
>
>
>Lance Lafargue, RPT
>Mandeville, LA
>New Orleans Chapter
>
Jon Page,  Harwich Port,  Cape Cod,  Mass.  mailto:jpage@capecod.net
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