Snowmobile suspension

Details Snowmobile suspension Snowmobile suspension

1990-04-03

1991-01-29

Marmor, Charles A.

Motor vehicles

Including one or more ski-like or runner members

With at least one surface-engaging propulsion element

180 956, 180 958, B62D 55108, B62M 2702

Patent

active

049879650

ABSTRACT:
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.

REFERENCES:
patent: 3761144 (1973-09-01), Perreault
patent: 3863727 (1975-02-01), Michrina

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