[pianotech] string replacement

Paul T Williams pwilliams4 at unlnotes.unl.edu
Thu Jun 4 13:58:31 MDT 2009


I'm doing it on this M&H A I'm re-stringing...only since the pins are 
waaay too tight.  I tested a couple and they're good now...(with the 
turning out and in method..) While on practice room grands, I always just 
turn out and in for time reasons.  If they turn out a little loose, I 
apply some CA.  I do agree to making the coils first if the pins are 
regular in tightness....How about Baldwins, y'all?  The last few years I 
tuned new ones in a store, they were massively tight and jumpy?

Paul




Jim Busby <jim_busby at BYU.EDU> 
Sent by: pianotech-bounces at ptg.org
06/04/2009 12:59 PM
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Re: [pianotech] string replacement






All,
 
In a chapter technical we measured torque after coming out 4 turns then 
back in, and it was an eye opener. The less turning, the better. 
Especially if the torque is low to begin with. Doing it twice and you 
almost needed a pin size bigger on some blocks!  Unless it's a Nossaman 
block where the Delignit cap seems to take more abuse. Older blocks seemed 
more affected by this in/out thing. 
 
Therefore, I'd NOT  back the pin out 3 or 4 turns if you can help it. With 
some blocks even this seemingly small thing will make the pin too loose. 
Instead, back it out only enough to get the string off (one turn or less), 
make the coil with your coil maker or dummy pin. Unless, of course, the 
pin was too low (close) to the plate and you're trying to remedy that.
 
Jim Busby
 
p.s. I don't remember the torque readings, but it was enough to make me 
stop turning the pins out...
 
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