Cordless screwdriver

[John Ross]

Hi Bruce,
I have seen split washers, on some older pianos. I just can't remember the
brand name.
So it has been tried, and I suppose that the only reason it is not done now,
is as a cost cutting measure.
Regards,
John M. Ross
Windsor, Nova Scotia, Canada
jrpiano@win.eastlink.ca
----- Original Message ----- 
From: <justpianos@our.net.au>
To: "Phillip Ford" <fordpiano@earthlink.net>; "Pianotech"
<pianotech@ptg.org>
Sent: Sunday, November 07, 2004 7:46 AM
Subject: Re: Cordless screwdriver


> Has anybody considered a split washer as a torsioning device on flanges.
> I think it may take up the "slack" during dry times, thus preventing
> loosening of flanges over time.
> Also since the Allen key wrench with a "ball" tip is very easy to insert
in a
> blind situation could this make a good alternative for situations
requiring
> tightening frequently.
> Bruce Browning-The Piano Tuner
>
>
> Phillip Ford <fordpiano@earthlink.net> said:
>
> > >I think the real difference between these two tools is the torque range
> they
> > >produce. The Power Grip is 0.3 to 3.5 in-lbs. Joe's Panasonic is 3.5 to
26
> > >in-lbs. Obviously, a job that one of these tools works for, the other
will
> > >not. Now the question is how much torque makes for a happy flange?
> >
> > Good question, for which I don't have a good answer.  At the moment, all
I
> > can say is that I tighten the screws until they feel tight enough to my
> > 'torque wrench', otherwise known as my hand.  I did an archive search on
> > action screw torque but didn't come up with anything (did come upon some
> > other interesting things though - I find looking in the archives is like
> > looking in a dictionary, I get so interested in all the other stuff I
see
> > that I forget what I went to look up).
> >
> >
> > >It would seem to me that 3.5 in-lbs would be way less than that needed
for
> a
> > >flange screw. Yes? No?
> > >
> > >Terry Farrell
> >
> > I've never done any torque measurements with the Power Grip, so I can
only
> > give you anecdotal evidence at this point.  I agree that 3.5 in-lbs
sounds
> > way too low for a flange screw, and based on my experience with the tool
> > I'm surprised at that figure for max torque.  The torque settings on the
> > tool are 1 - 5.  I normally use something like a setting of 3 to run
action
> > screws in.  That makes them as tight as I want them to be.  I actually
> > prefer to do the final tightening by hand, so that I can feel how tight
the
> > screw is.  I use the tool for running of screws in and out to save my
> > wrist.  With the torque limit on the max setting I've had no trouble
> > running screws into a new Steinway rail with only pilot holes.  So, for
my
> > uses, the tool has adequate torque.
> >
> > As far as the question of how tight action screws should be,  I'll
measure
> > the torque on screws that I think I've tightened adequately and report
> > back.  That will give one data point (probably not very convincing).
But
> > if a few other people do the same we might get a better picture.  Also,
> > someone like Don Mannino can probably give us official factory figures
for
> > this.
> >
> > Phil Ford
> >
> >
> > _______________________________________________
> > pianotech list info: https://www.moypiano.com/resources/#archives
> >
>
>
>
> -- 
>
>
>
> _______________________________________________
> pianotech list info: https://www.moypiano.com/resources/#archives
>