4 WHEEL PIANO DOLLY

Besides the danger of a jam, casters do not virtually eliminate the weight of the piano as happens when it is mounted up on a 4 wheel piano dolly. So, whenever a 4 wheel piano dolly can be used to transport the piano - muscle power to move it on the part of the crew is reduced to almost nothing because a properly balanced dollied piano is almost weightless and easily overcomes inertia on level surfaces. On inclines or ramps the piano's weight is reduced considerably but what's left is expressed on the low end of the incline. The steeper the incline, the more weight that will be expressed there. Consequently, at least 3 men are needed when moving even a small upright piano because at least 2 men need to be positioned on the heavy side of the incline to handle all of the piano's expressed weight.

Below is a picture of a small upright piano properly mounted on its side on our 4-wheel dolly. Notice that no one is holding it. This is only possible because it's on flat ground and it's balanced correctly on the dolly, so it just sits there as is, without needing a steadying hand or any other support.