Snowmobile suspension

B - Operations – Transporting – 62 – D

Patent

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305/49

B62D 55/104 (2006.01) B62D 55/07 (2006.01) B62D 55/108 (2006.01) B62M 27/02 (2006.01)

Patent

CA 2007916

In a snowmobile track suspension the slide frame that contacts the ground-engaging run of the track belt is carried on front and rear suspension arm assemblies. The front suspension arm assembly is pivoted to the vehicle on the axis of the sprocket drive shaft. The rear suspension arm assembly is articulated, having upper and lower sections that are rearwardly angled and pivotally interconnected and support in the region of the pivotal interconnection the idler wheel that maintains the track under tension. The arrangement eliminates stretching of the track and lengthens the track life. Furthermore the rearwardly angled arrangement of the rear suspension arm assembly allows easier backward motion of the snowmobile because the lower arm section provides an angle of attack to help the track rise above an obstacle.

Dans la suspension de chenille d'une motoneige, la glissière qui entre en contact avec la partie de la chenille touchant au sol est soutenue par des bras de suspension avant et arrière. Le bras de suspension avant est fixé par pivot au véhicule sur l'axe de l'arbre d'entraînement à barbotin. Le bras de suspension arrière est articulé et comporte une partie supérieure et une partie inférieure, placées en angle vers l'arrière et reliées par pivot, et qui soutiennent, au niveau du lien pivotant, la roue de support qui maintient la chenille sous tension. Cette disposition élimine l'étirement de la chenille et augmente sa durée de vie. De plus, la disposition en angle vers l'arrière du bras de suspension arrière permet à la motoneige de reculer plus facilement, car la partie inférieure du bras fournit un angle d'attaque qui aide la chenille à surmonter les obstacles.

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