In article ,
Dave Osborne writes:

If you put large diameter wheels permanently on (the bottom of) a piano,
you will have to consider that you will be raising the piano up, which
means that the pedals will be off the floor, the keyboard will be too
high and you may not have enough adjustment in the bench. To get around
this you would need to put the piano on a dolly which was big enough to
put the bench on as well. This would not look good in a domestic
environment.

I've seen larger casters fixed on outriggers on upright pianos
in schools. Enables the piano to remain correct hight off the
ground, and adds stability when wheeling. Tried googling but I
couldn't find any pictures. Probably got some special name.

--
Andrew Gabriel
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