Concert grand carriage

[Jim Coleman, Sr.]

Hi Eric:

There is a very easy fix for these kinds of piano carriages. Do you know
what a violin tone post is? Anyway, if you tightly fit a 2X4 vertically
between the center piece of the truck and one of the beams of the piano,
you can hold down the middle of the truck from rising, the casters will
caster properly and there will be less bounce to the ounce. Here is where
you need to carefully consider the old carpenter's quote: "I've cut this
board twice, and it's still too short." If the board is too short the first
time, use double wedges opposing each other at the bottom of the 2X4, drive
them together until you make the truck level. Then cut a new 2X4 to the
indicated length, paint it black and you are in business.

Jim Coleman, Sr.

On Thu, 24 Sep 1998, Eric Wolfley wrote:

> Hi Guys,
> 
> We have an ancient Colson piano carriage under a Baldwin SD-10 which has
> bent with all the weight on it over time enough to cause the wheels to
> "toe-in". This makes it extemely difficult to push in a straight line or
> even to push it at all, and also makes it easier for the stage hands to
> crash it into walls, doorways, other pianos, etc. I've tightened everything
> as tight as it will go, and it is still this bad. Looking at the other 6
> trucks under concert grands here I notice that they are all bent, and I know
> none of them roll very well (or at least as well as I would like) I think if
> they rolled easier and straighter, there would be less cabinet damage to
> them over time. They also bounce a little bit when being played, and though
> nobody has ever complained to me about this, it seems like it would bother a
> pianist and even rob energy transmission.
> 
> I think we probably have a pretty fair representation of all the various
> makes sold by the supply houses except for the one called "Schroeder's
> classic carriage" Does anybody have any experience with this brand? Are they
> beefier or more stable than the others?
> 
> Thanks!
> 
> ```````````````````````````````````
> Eric Wolfley RPT
> University of Cincinnati
> College Conservatory of Music
> eric.wolfley@uc.edu
> http://ucccm56.ccm.uc.edu/pianowolf/
> 
> ```````````````````````````````````
> 
>