Who knows what bike this is?

[screb]

A friend of mine found this picture (in the Netherlands) of his granddad with his father on the back. He is wondering what brand bike this could be. Picture is taken round 1920 we think.

[cardan]

Lovely photo; difficult bike to identify.

From the features - early style Brampton Bi-flex front fork, belt drive with 3-speed gear in the rear hub, small 4-stroke motor with outside flywheel - I'd say the bike dates to about 1913-14, and was probably built on the continent.

It might take a little time to figure this one out.

Leon