Hi, all. I take care of a Steinway D at a local school which rides on a stage dolly. Yesterday I tuned for a pianist who found the movement of the piano under heavy playing to be disturbing. When he would play big octaves in both hands, the piano shook in a way he could feel through the keyboard. As Jurgen mentioned recently, the arms of the dolly are like big leaf springs. I have an idea to improve this for which I'd like to get your feedback. Because the piano legs rest on the ends of the dolly arms, outboard of the wheel location, the wheels act as fulcrums, and the weight of the piano lifts the central arm-connecting part of the dolly. If you press down on the rim of the piano, the center of the dolly rises toward the main rim braces. I am thinking if I put a vertical post between the dolly and a main rim brace, it will greatly reduce the dolly's freedom to move, thus less flexible. I would make it long enough to be in compression, rising from the central arm connecting plates of the dolly, upward toward the underside of the brace, and wedged between the two. Has anybody tried this? What were the results or problems? Do you have any suggestions for improvements to this idea? Thanks very much! ~Mark Schecter
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