Two people were seriously injured in separate motorcycle crashes in Dodge County over the weekend. Shortly after 3pm Saturday a 45 year old Brandon man was transported to a hospital with serious head injuries when he failed to negotiate a curve and was ejected from the motorcycle. He was not wearing a helmet. About an hour and a half later a 19 year old Beaver Dam man was flown by helicopter to a hospital with serious injuries after he failed to negotiate a curve on Redwood Road near Jersey Road and was ejected. He was traveling with a group of four motorcycles at the time of the crash.