Baldwin caster socket question

[jolly roger]

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Hi Joe,
             The Hamilton was spec'ed for Darnell castors, but you never 
know when some Purchasing agent switched to save a nickel.
I agree with you, a force fit for the socket is most important. Sloppy fit 
of sockets, due to either bad drilling or humidity shrinkage, is the #1 
cause of castor failure.
We have lined many of the holes with Veneer to tighten the sockets, also 
add 1 1/4" screws for better security.
Regards Roger

At 10:38 AM 10/6/02 -0700, Joseph Garrett wrote:
>All,
>I've been using the Darnell double wheel casters with Cast Aluminum Sockets,
>for many years. Alas, these were available from APSCO! I truly hope that
>Schaff, (now to be known as SchaffAPSCO <G>), will continue the many items
>that they got from APSCO! These Casters are definately Industrial Strength!
>They come in Hardwood or Carpet, so the application is variable. Once I have
>installed these casters, the basic problems of heavy use is no longer a
>problem. As a matter of fact, the efficiency of these casters can be a bit
>too much, some times, as they roll so easy, that sometimes you have to chase
>the piano as you play it! <G>
>In order to install these casters, I use an 15/16" spade bit to make the
>wood socket match the cast aluminum socket, (most wood sockets are smaller).
>This will make the socket a "press fit", that is desireable. The snugger the
>fit, the better, as it doesn't allow the socket to move around, even when
>the screws are somewhat loose!
>Once you get the sockets installed, it is necessary to "drive" the caster
>stems into the sockets. I have a designated screwdriver that has a large
>steel screw inserted through the handle, (from the top of the handle, down
>to the buried end of the screwdriver blade). I place the screwdriver blade
>into the "swaged" stem base, center the caster stem in the socket and drive
>the stem into the socket with my "BFH"! <G>
>As an aside, I have had very poor luck with the "cheaper" sets of casters,
>that are readily available. Although the Darnell Casters are expensive, they
>are very sturdy, safe and work the best.
>Hope this helps.
>Best Regards,
>Joe Garrett, RPT, (Oregon)
>
>Been There, Didn't Like It, So I'm Here To Stay! [G}
>
>_______________________________________________
>pianotech list info: https://www.moypiano.com/resources/#archives


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