Cordless screwdriver

[justpianos@our.net.au]

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
> 
> 
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