harley Davidson did not invent the V-twin motor,who did?

"V" represents the opposing positions of the cylinders, just like a V-8 engine. The bottom of the "V" in the location of the crankshaft and each leg is the cylinders. "Twin" simply means there are 2 cylinders on each leg of the "V". Therefore a "V-twin" is a 4 cylinder engine.

Twin Daggers - 2008 V is rated/received certificates of:

USA:R

The 18hp Vanguard is a 570cc V-twin.

V-Twin TV - 2005 was released on:

USA: 29 November 2005