Slow Hammer Return

[Michelle Smith]

Actually, I was wrong.  It's not the Wood & Brooks.  It's the spinet with
the wooden inverted stickers instead of lifter wires/elbows.

Thanks for all of the great information.  

(I also found some stuff in the Technical Exam Source Book.)

 

Michelle

 

 

 

 

  _____  

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Farrell
Sent: Saturday, June 03, 2006 4:25 PM
To: Pianotech List
Subject: Re: Slow Hammer Return

 

"BTW whats an Inverted Direct Blow? Is it upside down?"

 

I assume she is talking about one of those....... Brooks action is it? I
think the name is something like that.

 

"How long is a soaking? Are you submerging the entire part into this mixture
or are you just soaking the center with drops?"

 

Drops. I tend to be pretty liberal with my drops - just want to be sure to
get the bushings good and soaked. Just make sure you don't soak the butt
leather off (DAMHIK! - although I wonder, was that worse than the time I
filled all the key pin mortices on a set of keys with water to soak the
bushings out? Wanna know how to plump-up a set of keys?). Actually, what I
do is get my aim calibrated, set the action to where I have access, and
squeeze my squirt bottle (fine tip) and just run a stream of it right up the
whole action in one direction on the butt centers. Then I squeeze again and
run it right across all the butt/flange centers the other way. I might
repeat that. Then I'll target another action center if needed - check them
all - jacks, dampers, etc.

 

"Are there any other causes I should look for before I try soaking?"

 

Well, you need to do the standard checks. Isolate the keys from the action -
which one is slow? Remove a couple butts and check flange friction. Just
isolate all the moving parts and you should be able to identify with
confidence exactly where the problem is (or where the problems are).

 

I'll put a fan on when I let them dry overnight - put the fan on low and not
even point it directly at the action. I've had real good luck with it. Often
one application makes the magic work completely. Sometimes it will only get
80% of the centers and you need to do it again. Even then sometimes I'll
have to Protek a few centers to get them all working.

 

Terry Farrell

 

 

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