Year-over-year Canadian motorhome sales gained 10% in July and edged up 1.6% for the first seven months, according to the latest report from Statistical Surveys Inc. Forest River Inc. was the Canadian motorhome sales leader year-to-date, capturing a 35.3% market share, followed by Thor Industries Inc. and Winnebago Industries Inc. . July Class A registrations were down 6.3% while year-to-date sales grew 5.7%.