[pianotech] WNG Parts Question

William Truitt surfdog at metrocast.net
Fri Jun 25 15:44:43 MDT 2010


It doesn't change it a meaningful amount.  It's still too strong, but it's
no longer psychotic, and can be weakened to the desired level in a much more
predictable and consistent manner.  Repinning the top post to a higher
torque gives you both worlds - a slower rise to the hammer while maintaining
a happy, snappy jack.

 

The reality is that (hopefully) it is WNG's future fix.  I've talked to tech
support and tried to impress upon them the importance of doing that.  It's a
simple fix to make in production, whether a hard or soft bushing, just size
it properly.  

 

But how would it be WNG's fix on my behalf?  Especially if they do not have
anything in stock yet that is properly sized.  

 

Will

 

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of PAULREVENKOJONES at aol.com
Sent: Friday, June 25, 2010 3:12 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] WNG Parts Question

 

 

 

In a message dated 6/24/2010 7:00:31 P.M. Central Daylight Time,
ngravagne at gmail.com writes:

Now, just to be clear: let's say you applied your "fix" to a whip wherein
the hammer rise out of check was much too strong and difficult to regulate.
So, applying the '"fix" only, with no other regulation at all, not only
slowed down the cranky hammer rise, but at the same time made further
adjustment (and hopefully little of that) of the spring more sure and more
"normal". Is that right? 

Because if it is, then the fix also maintains a snappy jack, as well as a
properly spring-loaded system from check. Good news! (Uh, except for all the
extra work we now have to do on new parts!)

Boy, do I agree wholeheartedly! Except that the "extra work" maybe might
oughta be WNG's fix? 

 

And, as well, with the 4:1 ratio (rep to jack) of spring strength, the jack
ought to be consistently snappy now. 

 

Paul


 

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