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01.08.2006, 10:22 AM
The Lehner motors have a very efficient winding technique as well, which is surely a major factor in their efficiency. The segmented magnets also are a factor (particularly at partial throttle, where our motors are most of the time - this is where the efficiency difference is noticed/realized with the segmented magnets). Of course gearing plays a major role in heat generation as well. There are tons of posts on the forum about heat that are ultimately addressed with gearing changes(some over geared, some undergeared).
The Lehner motors(19 series, 22 series, 15 series etc.) simply run much cooler in most environments. The Lehner basic series(which shares the windings with the 19 series, etc.) is also quite efficient and powerful, but there is a noticeable heat difference vs. the 1930 motor(which is about the same size). This indeed suggests and highlights the benefit of the segmented magnets, as the motors are otherwise very similar in construction.
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