Harley Davidson FL 1200 Type 74 Knucklehead




Make Model

Harley Davidson FL 1200 Type 74 Knucklehead




Four stroke, 45° V-Twin, OHV


1207 cc / 74 cu-in
Bore x Stroke 86.3 x 101.6 mm / 3.4" X 4"
Cooling System Air cooled


Single Linkert carburetor


Battery and coil

Max Power

53 hp / 39.5 kW @ 6000 rpm


4 Speed 
Final Drive Chain

Front Suspension

Springer forks

Rear Suspension


Front Brakes


Rear Brakes



258 kg / 569 lbs

1946 Harley-Davidson 1200cc Knucklehead Type 74 In its 90 year history, Harley-Davidson could never have been accused of being technically adventurous. But this conservative outlook has saved the Milwaukee company from making disastrous mistakes. In the early Twenties, Harley-Davidson became the world's biggest motorcycle manufacturer, with an annual capacity of 35,000 machines.

Consistent Policy

Since 1909, the firm's hallmark has been the big vee-twin, a policy that has ensured the survival of Harley-Davidson when all the other American motorcycle manufacturers have fallen by the wayside. In 1936 the company introduced the valve-in-head 61 cubic inch. (100cc) Type EL, nicknamed "Knucklehead" because of the shape of its rockerbox castings.

Conservative Specs

The Knucklehead boasted such features as a four-speed gearbox with hand change and food clutch, a double cradle frame and pressure lubrication. After the war, America (which had imported only a handful of European motorcycles before the war) discovered the charms of the light, fast British twins. In 1946, American built just 20,000 motorcycles-and imported 9,000, of which 8,000 were English! To respond to this new scenario, Harley offered the Type 74, a 1200cc derivative of the prewar Knucklehead, which saw the light of day in 1941. It remained in production only until 1948.

Fuel System: single carburetor
Transmission: four speed hand-change gearbox; chain final drive
Suspension: (front) "Springer forks"; (rear)rigid
Brakes: (front) drum; (rear) drum
Wheels: balloon tires (optional)
Weight: 560lb
Maximum Speed: 110 mph