Bombardier B-7 Snowmobile

Snowmobile B12 of her Majesty's postal service, ca. 1940.

Joseph-Armand Bombardier’s idea for the snowmobile grew out of family tragedy. Impassable winter roads prevented him from taking his son to hospital, and the infant died of peritonitis.

In 1935, Bombardier built a prototype that ran on caterpillar tracks like those used on military tanks. Two years later, he patented a sprocket wheel and track drive system to build the B-7, a seven passenger covered snowmobile. The B-7 became popular with country doctors and veterinarians, as well as for postal delivery, and forestry and utility companies.

The commercial success of the B-7 allowed Bombardier to expand production facilities in 1941 and develop other snowmobile designs, including the Ski-Doo. This B-7 is a 1939 model used for postal delivery in rural Quebec.

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