The FN Four was first introduced in Belgium in 1905 with production running until 1926
The engine was redesigned, and displacement was increased to 498cc in 1910
Note the oval acetylene headlamp
This design had a shaft drive, magneto ignition, splash lubrication, a leading link front fork, and atmospheric inlet valves
The 1912 cylinders had twelve cooling fins rather than the eleven on earlier models and used bolt and flange exhaust rather than the earlier screw on type
This example uses a Bosch ZFN4 upright magneto incorporating a distributor for drivability
The FN Four was first introduced in Belgium in 1905 with production running until 1926
The engine was redesigned, and displacement was increased to 498cc in 1910
Note the oval acetylene headlamp
This design had a shaft drive, magneto ignition, splash lubrication, a leading link front fork, and atmospheric inlet valves
The 1912 cylinders had twelve cooling fins rather than the eleven on earlier models and used bolt and flange exhaust rather than the earlier screw on type
This example uses a Bosch ZFN4 upright magneto incorporating a distributor for drivability