[pianotech] Sluggish action on Wurlitzer

Wed Nov 19 14:23:09 PST 2008

You need to go www.ptg.org , find "search the archives" and read.   I would suggest the Randy Potter course.    

David Ilvedson, RPT

Pacifica, CA 94044

Original message

From: <88man at netscape.com>

To: 

Received: 11/19/2008 9:53:29 AM

Subject: Re: [pianotech] Sluggish action on Wurlitzer

Does repinning mean cleaning the existing pins and replacing, or replacing the pins...and is rebushing a part of repinning?...

thanks,

Lance Chauvin

--- formsma at gmail.com wrote:

From: "John Formsma" <formsma at gmail.com>

To: pianotech at ptg.org

Subject: Re: [pianotech] Sluggish action on Wurlitzer

Date: Tue, 18 Nov 2008 22:44:14 -0600

Pianotek sells it. It supposedly renews felt.  We talked about it on the list some weeks ago.  I have used it three times on key bushings, so don't have much experience with how long it will be effective.  But so far it looks promising.  It does (at least temporarily) get rid of cupping.

In addition to key bushings, it can be used on whippen felts, etc.

--

JF

On Tue, Nov 18, 2008 at 10:31 PM, Isaac Sadigursky <irs.pianos at earthlink.net> wrote:

Hi,John!  Can you clarify what is "VS Profelt"???????? Thanx   isaac

On Nov 18, 2008, at 7:37 PM, John Formsma wrote:

On Tue, Nov 18, 2008 at 7:09 PM, Greg Newell <gnewell at ameritech.net> wrote:

       Best course of action? Depends. Do you want it to last? Do you want

a reputation for excellence? Repin them.

I agree with Greg.  A lube is not going to fix major friction problems.  I've run across several Wurlies with high friction in hammer, wippen, and jack centers.

Before repinning, you might do a couple things:

Push a few problem center pins out to see if they have "crud" on them.  If so, you probably want to repin.

Size the problem centers with a solution of alcohol and water.  Begin with 10% or 25% water and the rest denatured alcohol. Put 2-3 drops on a few centers, and leave them overnight (or under a warm lamp for a couple hours).  And be sure to "exercise" the centers after the sizing. 

If the alcohol/water sizing doesn't work, you could use a higher concentration of water.  If that doesn't work, you'll have to repin as needed.  And I'd allow plenty of labor, because you're likely to repin most of the hammers and wippens.  I would remove all hammers and wippens, and check the friction on each one (along with the jack).  And while you're at it, renew the key bushings with VS Profelt if they look cupped.  That will only take a few minutes, and it works well.

-- 

JF

Netscape.  Just the Net You Need. 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://ptg.org/pipermail/pianotech_ptg.org/attachments/20081119/6c62e15f/attachment.html>