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: 1. Push a few problem center pins out to see if they have "crud" on them. If so, you probably want to repin. 2. 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 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech_ptg.org/attachments/20081118/f90ae493/attachment.html>
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