Annoying jiggle sounds

[Eric Leatha]

Hi Bill,

You might try rubbing parafin wax on the joint (this will require removal
of the offending leg).  I've found this works fairly well at quieting
polyester ticks (which are a delicacy in these parts).




>List -
>
>I service a Hyundai grand regularly, that makes an annoying sound whenever
>any sudden pressure is applied, such as pushing the damper pedal, or in my
>case pulling/pushing on the tuning hammer.  I've wasted a lot of time trying
>to find and eliminate it.
>
>While the piano feels solid on its legs  (not like the cheap American grands
>that make me jam my knees up against the keybed to hold them in one place
>while tuning), there is an almost unperceptible jiggle started with each
>tuning hammer motion, that the piano then responds with a, "chick, chick,
>chick, chick..." so long you'd swear you had found perpetual motion.  The
>sound is similar to that of a dog walking "tip, tip, tip, tip..." across a
>hardwood floor
>
>It comes from the area of the rear leg.  Tightening everything accessible
>(pedestal screws, leg screws, etc) has no effect.  I suspect the polyester
>finish at the joint in the leg itself.  While the joint appears tight, could
>their be just enough motion of the finished surfaces against one another to
>produce this sound?  I wonder whether trying to spray some McLube into the
>crack might help, but don't want to mess up something that would make trouble
>later.
>
>Anyone else ever run into this problem?
>
>Bill Maxim, RPT

"Tunings are like bridges... Some are more exceptional than others, but
they all get the job done."

Eric Leatha, RPT
Portland, OR
tunrboy@teleport.com