There seems to be some uncertainty whether hanging the racquet by strings as described by TWU is really OK. Some argue that hanging the racquet at the handle must be better since the swing weight is calculated there. Theoretically you have nothing to gain from hanging it at the handle. But I thought it might be interesting to see whether there is any difference in practice. I therefore made 40 test of a racquet (Wilson kTour 95), hanging the racquet from two different locations at the handle and five at the strings. I measured the swing weight with the SwingTool app (new version). The results can be seen below. There are two types of variations. 1. Difference between the hanging points. This probably due to errors when measuring the distances to the hang point and the balance point (center of gravity). But there is no systematic difference between the points. 2. Difference between tests at the same hang point. These are probably due to errors in measuring the swing time and differences in the swinging angle. However, all these variations are very small! The average of the test is 330 kg cm^2 and all measurements fall within +-0.5% which is even better than I expected. So my conclusion is that it is OK to hang the racquet from the strings and you don't have build any fancy devices to hang it from the handle. A word of caution though, the lengths (to the hang point and balance point) are squared in the calculations so you have measure them carefully. I don't think the TWU "push over the edge" concept is accurate enough. The swing time must of course also be measured with some accuracy. I checked SwingTool against a timing gate several times and the result was within +-0.002 s. /Sten _________________________________________________ racquetTune, swingTool and fitnessMeter, tennis apps for the iPhone.