[pianotech] bridle wires

[David Nereson]

    I don't remember and didn't measure the exact diameter, but 
it can't be too small, or it won't slip around the crook of the 
bridle wire.  It needs to sit right at the bottom of the crook. 
If it's too large, of course, it won't shrink all the way onto 
the bridle wire.  I used lengths cut to about 1/8" long.  Too 
long, and again, they're hard to slide past the crook.  I think 
the diameter was about 3/32", maybe even 1/8".  I'll bet 1/32" 
is way too small and will be very difficult.
    I still had to glue the tabs of some of the straps because 
the hole had worn so large, it would flip off of the wire on 
repeated blows.
    --David Nereson, RPT
----- Original Message ----- 
From: "Keith McGavern" <kam544 at allegiance.tv>
To: <pianotech at ptg.org>
Sent: Monday, August 17, 2009 1:23 PM
Subject: Re: [pianotech] bridle wires


Scott, List,
Had a situation where this fix needs done on a Baldwin 
Acrosonic,
early '70s' vintage.
Question:
I am curious as to what size diameter shrink tubing you choose 
to use,
1/8" or 1/32"?
I am currently experimenting with the concept of using shrink 
tubing
activity for this procedure.
Keith
> I have used small-diameter shrink tubing on this type of 
> bridle
> wires to
> keep the bridle straps from sliding down off the "crook". Just 
> cut the
> tubing into little 1/4" lengths, slide it over the bridle wire 
> so
> the top
> end is just about where you want the bridle strap to sit, and 
> shrink
> it
> onto the wire. ……
>
> ------
> Scott A. Helms, Registered Piano Technician
> 480-818-3871
> www.helmsmusic.net