The 1915 HD Model 11F was one of the most advanced motorcycles available on the planet. It featured an overhead valve V-Twin motor (only the intake valve was overhead-the exhaust valve remained flathead) that had an automatic oiler. A magneto was offered and the Model 11F had a proper transmission and clutch. The Model 11J offered electrical lighting but cost $35 more MSRP. Harley Davidson offered written verification of their horsepower output in 1915 and nearly 10,000 Model Fs were sold.
The 1915 used a 30 CID (491 CC) air cooled four stroke overhead valve V-Twin motor that produced 11 HP with a three speed transmission and chain final drive. The Model F used a leading link front suspension with coil springs and rigid rear suspension. Brake (rear only) was a double action expanding band setup that was not exactly state of the art. The fuel tank had two small cutouts on the right side to accommodate the OHV assembly.
This particular Harley Davidson Model 11F (Frame # 5424K) is in Costa Mesa, California and is listed as a complete restoration by Eldon Brown. Documentation of the restoration is part of the purchase price. Current price is at $92,500 with reserve not met