spring thing bling bling

Ron Nossaman rnossaman@cox.net
Thu, 15 Sep 2005 16:27:34 -0500




Got the call. It's a Schafer and Sons console, and the keys around 
middle C are very hard to push down. Ok, that's pretty specific. 
Likely a pencil or some such. No, the piano had recently been worked 
on and the tech had taken the action home to fix this very problem, 
which is still a problem. Ok. Scheduled in. Let's go see.

Sitting at the pencil-free piano, I note that EVERYTHING is hard to 
push down - not just around middle C. It's been like this since they 
got it, but nobody played it anyway (???) until her daughter started 
taking lessons recently and was complaining about the touch. Yes, 
that explains why the problem is around middle C. That's the only 
place she plays. More mysteries evaporate as I step on the damper 
pedal and the touch weight suddenly becomes more reasonable. So what 
did the other tech do? It turns out that she guessed the problem was 
the Emralon in the spring grooves (???!!!????), so she took the 
action back to the shop and glued spring punchings in the grooves, 
on top of the Teflon (with what looked like Elmer's Glue-All), in 
both the damper levers and hammer butts. She used white on the 
dampers, and red on the butts. I have no idea why the different 
colors, but it was kind of festive in a creepy sort of way. In doing 
so, she both added friction, and increased spring tensions, 
aggravating the original problem. Good job!

I brought the action back, pulled the spring rail, took off the 
damper levers, removed the spring punchings (would have fallen out 
by themselves soon) readjusted the damper springs to what I thought 
felt more reasonable, and reassembled everything. Didn't even 
require the use of the regulating cat, though I had a few offers and 
passing inspections through the process. Tomorrow morning, we'll see 
how it feels in the piano.

Some puzzles still remain. First, what conceivable pathological 
logic process would lead anyone who's been in this business for at 
least 15 years to the conclusion that springs riding in Emralon 
coated grooves were causing excessive touch weight? Second, what 
conceivable pathological logic process would lead anyone of ANY 
experience level to conclude that adding spring punchings had fixed 
the problem when pressing down a random key in the middle of the 
scale would clearly indicate that it hadn't?

Stuff like this baffles me, even after seeing it for the 7,012th 
time (don't get out much).

Hey, at least it's about pianos.
Ron N

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