Coil tapping

[Jon Page]

Richard,
Once the coils are lifted, beckets snugged, pitch raised; the
coils can be further compressed by tapping with a screw driver
or the hollow steel tool from the top . This will square them off
to the pin and further stabilize the tuning.

However on pins in the bass sections of some verticals where
the angle is extremely acute, Joel had a good comment on that:
having the coil angled so as to allow the wire leaving the pin to be higher
reduces the risk of the wire bending over on itself and breaking.

Well, off to sand paste wood filler, sheesh,

Jon Page

At 01:44 AM 4/21/98 -0500, you wrote:
>As not unusual, I think I am missing something here.  Coil tapping.  OK, I
>give up what is coil tapping?   Tapping with what?  I know how to "lift"
>coils, and I know about snugging the becket bend with plyer tips wraped
>with masking tape, and I have  tool I made from a screw driver with the
>last 3/16" of the tip bent 90° that works better than a coil lifter in
>tight places.  But I don't tap with those, I use a T handle and loosen the
>tension, then lift.  
>
>Richard Wonders
>----------
>> From: Marvin McDonald <pianomarv@earthlink.net>
>> To: pianotech@ptg.org
>> Subject: Re: Coil tapping
>> Date: Monday, April 20, 1998 10:04 PM
>> 
>> Jim Coleman, Sr. wrote:
>> 
>> > To All:
>> >
>> > Coil tapping is usually taken care of at the factory. All good
>rebuilders
>> > do this routinely because they know that this will save them several
>> > rough tunings. The technician in the field should not have to do any
>> > additional coil tapping on well made pianos.
>> >
>> > I have a 25 year old Baldwin SF10. I lightly tapped two pin coils.
>Nothing
>> > changed pitchwise. Perhaps there might be some change on a very new
>piano
>> > but I don't have one available just now.
>> >
>> > Jim Coleman, Sr.
>> 
>> Jim,
>We almost always find that we have to tap the coils in
>the
>> Samicks,  Wurlitzers,  and Young Chang but only an occasional Baldwin.
>> Mostly in the Grands not so much in the verticals.  This is after they
>have
>> been uncrated.  You would be surprised at the difference in the tuning
>after
>> the coils have been tapped.  I have had the piano fall as much as 70 to
>80
>> cents flat.  Once they're done and brought back up to pitch they are
>> considerably more stable.
>> 
>> Marvin McDonald, Jr.
>> 
>> >
>
>