| 摘要 |
The disclosure herein describes a ski assembly for mounting at the front end of a snowmobile wherein an auxiliary spring leaf has been added underneath the conventional spring leaf unit to provide to the ski assembly a double constant feature. In one embodiment, the auxiliary spring leaf has its central portion fastened to the central portion of the main spring leaf and its opposite end portions spaced from adjacent portions on the main spring leaf. In a second embodiment, the auxiliary spring leaf extends directly over the upper face of the ski runner with one end secured to the ski runner and the other end slidably bearing thereon. Both embodiments provide a much smoother springing action to the ski assembly because, in both cases, the auxiliary spring leaf is flexed only after an initial deflection of the original spring leaf unit or after the loads imparted on the ski assembly have exceeded a predetermined value.
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