Vintage Harley Davidson 1920 start up 

Oh that's wild how they made the valves operate... Definitely an engineering history lesson

Love this bike. . . . Harley Davidson Model J. (Like the way they put the ' Cut Off Switch ' underneath the seat).👍.

The clutch is foot activated and is on the left side above the floor board. Until 1928 they only had a rear brake and the pedal is on the right side by the floor board. The where called F heads. It has one overhead valve and one side or flat head valve.

Very beautiful motocycle

wow! really nice bike

@BikerRussell This is not a side valve but a F head that has one side valve and one over head valve. Great bike. It only took me 4 kicks to start my 1946U when it was cold. 3 to prime and one with the switch on.

great bike...

Love it

very cool

@coyotemutt Whats the alternative? Everyone knows how a side-valved engine works?

so where's the clutch and brakes on this?

that is cool

How come things always seem to work on the 3rd attempt LOL

Great machine! (P.S. don't tuck your pants into the boots anymore)

@Jeff46u This would be called a "half top" where Im from.

Even back then it had the potato sound.

@BikerRussell If I am not mistaken Harley called it a F head.