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The early motorcycles made their mark in International Six Days Trials competitions, enduro races like the Michigan Jack Pine Endurance Run, scrambles and motocross.The most popular size was the 125cc (Six Day), but they were also made in 100 cc (Berkshire) and later, in 175 cc (Jackpiner, in 1972), 250 cc (Hare Scrambler, in 1973), and 400 cc (Mint, in 1974).
Gray built their own engines up to 1924, but converted automotive engines from about April 1924 on. During WWII, Gray Marine built 100 marinized GM style 71 series diesels a day using GM cylinder blocks. [1] [3] On June 14, 1944, the company was purchased by Continental Motors Company for $2.6 million. John W. Mulford, the son of O. Mulford ...
Media in category "Images of boats" The following 36 files are in this category, out of 36 total. ... Farley family photos 058.jpg 1,284 × 887; 513 KB. Harbor and ...
A 6-71 Gray Marine training engine aboard the Training Ship Golden Bear. The 6-71 Gray Marine Diesel Engine is a marinized version of the General Motors Detroit Diesel 6-71 engine produced by the Gray Marine Motor Company. It was used in landing craft during World War II and is used today in private boats and training facilities.
Cranke qualified to become a member of the U.S. ISDT Team representing the United States at the 1972 International Six Days Trial in Czechoslovakia. The International Six Days Trial, now known as the International Six Days Enduro , is a form of off-road motorcycle Olympics which is the oldest annual competition sanctioned by the FIM dating back ...
John Penton (born August 19, 1925) [1] is an American professional motorcycle racer and entrepreneur who developed an enduro motorcycle brand that bore his name. [1] [2] A national champion enduro rider, he was an influential figure in the development of off-road motorcycle racing in the United States during the 1960s and 1970s. [1]
General Motors It sought customers for GM's diesel engines, which had undergone major development during the 1930s. [ 1 ] [ 2 ] It was most active in association with GM's Detroit Diesel Engine Division , which produced lines of lightweight diesel engines that could be adapted to many uses including road vehicles, small boats, military ...
The Cleveland Diesel Engine Division of General Motors built the majority of submarine engines during World War II. The Model 16-248 and 16-278A were installed in many of the Salmon , Sargo , Tambor , Gato , and Balao classes of diesel electric submarines built in World War II and they continued to operate in U.S. service until the 1980s and in ...