The Swiss Dufaux brothers from Geneva-Switzerland developed their first 4-stroke engine in 1899. In the early years, most bicycle dealers did not have the capital to develop their own engine, so they often used built-in engines for bicycles. For this purpose, usually a clip-on engine was used, which was attached to the frame by means of brackets cast into the crankcase. Furthermore, a petrol tank, oil system, ignition, etc. had to be added. The Dufaux brothers had a very nice solution for this. They built everything into an auxiliary frame that could be built into any bicycle frame in a few seconds with the help of a few fixing nuts. Hence the name moto-sacoche (engine in a bag). Motosacoche became a success and later developed many other models. Their engines were so good that they supplied engines to many brands. This was not possible under their own name as they built motorbikes themselves but these blocks were sold under the name M.A.G. Motosacoche-Acacia-Geneve. This was the address where the firm was based.
The Motosacoche model MT 225cc of 1907 offered here is in nice original condition. Engine has compression.

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