Spoked wheel truing: why to use two dial gauges for axial runout.
Автор: Gazzz Garage
Загружено: 2021-04-23
Просмотров: 613
Описание: I use two dial gauges to control side-to-side (axial or lateral) runout of rim when I am truing the wheel. The reason is next: the actual width of rims (even of those as good as Takasago Excel) may vary. In some places the rim may be narrower and in some wider. With only one dial gauge one may make one side of the rim mostly perfectly straight, but runout of the other side will be doubled in narrow and wide zones. Therefore it might be out of specs. To show you what I mean I shot this short video. In it you may see one of the rims I trued recently, it's a Takasago Excel 4.25X17" rim. With the help of two dial gauges I centered all narrow and wide zones, so run-outs of both sides of rims are within specs. Actually they are within 0.4mm (including welding seam zone). Narrow and wide zones are clearly visible in this video: when needles of both gauges simultaneously (or mostly simultaneously) move clockwise - it's widening, when they both move counter-clockwise - it's narrowing.
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