[pianotech] Rebel action

[wjstuner at juno.com]

Could there be a divot in the whippen action cloth?  Or how about a burr on the capstan itself?  I have service many Wurly consoles and the felt is a good candidate.  Also check to see if the jack for that note goes further under the butt.  It may be the butt felt square is damaged.

Bill Schlipf
Bloomington, IL




-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Arlie Rauch
Sent: Wednesday, July 06, 2011 9:33 AM
To: pianotech at ptg.org
Subject: [pianotech] Rebel action

Yesterday I serviced a Wurlitzer console.  The customer complained about one
key (2nd Eb above middle C) not working.  The problem was that the jack
would get stuck when the hammer returned.

I tried various regulation changes (regulation button, back check, bridle
wire, etc.).  The capstan was proper.  When its action appeared to be
regulated exactly as those around it, the hammer would rebound against the
rest rail.  The only way I could get it to behave somewhat properly was to
move the back check about a quarter inch further forward than all the other
back checks.  Then it would not get stuck, but repetition suffered some.

I even replaced the jack spring, thinking that was weak, but it made no
difference.

What have I possibly missed here?

Arlie Rauch=

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