This Thor Model U has a 61ci (1000cc) motor rated at 7 hp, a single speed transmission, and has a top speed of over 50 mph
The valve configuration is known as an F Head with the inlet valve located above the exhaust valve which cools the exhaust valve protecting it from overheating and warping
Thor supplied engines to many manufacturers, including Sears Roebuck, Reading, Standard, and Indian
This Thor is a road worthy driver and was produced by the Aurora Automatic Machinery Company in Aurora, Illinois, from 1901 to 1920
This Thor Model U has a 61ci (1000cc) motor rated at 7 hp, a single speed transmission, and has a top speed of over 50 mph
The valve configuration is known as an F Head with the inlet valve located above the exhaust valve which cools the exhaust valve protecting it from overheating and warping
Thor supplied engines to many manufacturers, including Sears Roebuck, Reading, Standard, and Indian
This Thor is a road worthy driver and was produced by the Aurora Automatic Machinery Company in Aurora, Illinois, from 1901 to 1920
