Steinway [non-adjustable jack] question

BobDavis88 at aol.com BobDavis88 at aol.com
Mon Dec 11 17:52:37 MST 2006


In a message dated 12/11/2006 12:13:26 PM Pacific Standard Time, 
deanmay at pianorebuilders.com writes:
Thanks for the reply, Bob, but I was speaking of adjusting the adjustable 
types. David was commenting on how crucial it is to get a good adjustment on the 
jack position for good regulation. I was hoping for a procedure that was more 
exact than a visual alignment on the section ends, draw a thread across the 
section, align the rest of the jacks to the thread.
My apologies, Dean, you are of course correct. That was Phil Ryan's question 
originally; I just elided your question right into his. I'll pay more 
attention. That said, I adjust the adjustable ones quickly by sight, to the back of 
the knuckle core of the adjacent wippen; or by the line on the top of the wippen 
if it's close to the right place. You can also rough it in with the string 
method. Then I adjust by function, bringing each closer to me until just before 
it fails (Orchestra member: "When do I come in?" Conductor: "Just listen for 
the trombones, and come in six measures before they do"). 

Failure I test by placing my hand lightly on top of the hammer, then poking 
the key. If the jack skips out, it's too far proximal. I agree that it's an 
important adjustment - if they're too far distal, letoff is mushy.

Ed Foote's method might be more refined yet, but this works for me.

Bob Davis
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