[pianotech] Kawai Pedal Lock Nuts

John Formsma formsma at gmail.com
Tue Apr 17 12:34:06 MDT 2012


Gee whiz, y'all. Just tighten the durn things. :-)

Ron's right. If they're tight, they don't move. At least not when they're
on a pedal rod.

-- 
John Formsma, RPT
Blue Mountain, MS


On Tue, Apr 17, 2012 at 1:29 PM, Ron Nossaman <rnossaman at cox.net> wrote:

> On 4/17/2012 12:19 PM, Paul Milesi wrote:
>
>> "Nonsense. It doesn't matter a whit how perfectly mated the nuts are
>> or not. If they are tightened together, they will grip the threaded
>> shaft without turning."  -Ron N
>>
>>
>> Ron,
>>
>> Empirically, I can't help but believe this simply isn't' true.  In
>> my experience, Joe's comment about the threads of the two nuts
>> sometimes ending up perfectly aligned after tightening does happen,
>> and the result is that the two nuts turn as one on the shaft just as
>> easily as one, no matter how tight.  Have seen this on a couple
>> occasions, and no amount of tightening will change that reality, once
>> they are as tight as they can be.
>>
>>
>> Interesting that I inquired about this back on 1/21/12, and received
>> a few answers.  The one from Paul Bruesch was the one I trusted the
>> most at that time.  I think Joe's got it right now.
>>
>
> It just isn't physically possible. If the nuts are tightened together, the
> threads are jammed in opposite directions on the shaft and they won't turn
> on the shaft. If they turn, they aren't tight. What "alignment" are you
> talking about that would make them turn?
> Ron N
>
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