Patent ID: 7815005
Filing Date: 2010-10-19
Classification: B62K

Abstract:
1. A swingarm assembly for use in motorcycles for supporting a motorcycle rear wheel, which comprises: left and right arms, pivot bushings connected to respective front ends of the left and right arms, each pivot bushing being rotatably mounted on a pivot pin of a motorcycle frame structure; end pieces connected to respective rear ends of the left and right arms for supporting an axle of the motorcycle rear wheel; and a connecting member by which the left and right arms are connected together at respective intermediate portions thereof, wherein at least the left and right arms are formed from a magnesium alloy, and wherein each of the left and right arms is in the form of a tubular member having upper and lower walls and laterally outer and inner side walls, at least one of the following conditions (i) and (ii) is met: