Harmsen

This 50cc special ws built by Dutchman Carel Harmsen in 1979.
The sandwich- framed bike had initially a Kreidler engine, but later
Harmsen built a special engine for it. Harmsen- Roton Kreidler.

The Harmsen sandwich frame. Aad Wisjman driving the Harmsen.

A replica was recently made by another Dutchman.
René Wesellius, a gifted craftsman and avid 50cc classic- racer
made this bike loosely based on the Harmsen. The engine itself
is a cut-and-paste Sachs, now sporting a horisontal cylinder. WRM Sachs - made by René Wesellius.

Two aluminum plates sandwiching engine, steering head, and swingarm pivot. WRM engine - extensively modified Sachs 50cc.

This 50cc special ws built by Dutchman Carel Harmsen in 1979. The sandwich- framed bike had initially a Kreidler engine, but later Harmsen built a special engine for it.

A replica was recently made by another Dutchman. René Wesellius, a gifted craftsman and avid 50cc classic- racer made this bike loosely based on the Harmsen. The engine itself is a cut-and-paste Sachs, now sporting a horisontal cylinder.