FN 1928 M70 Sahara 350 cc 1 cyl sv

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FN  1928    350 cc side valve  M 70   “ Sahara”   frame#45152  engine# 13321

At the end of 1923 FN marketed a 350 cc  single cylinder ohv with unit construction engine.
This model, the M60, was the start of a successful new line of models in a period in which the heavy and expensive four cylinder was quickly loosing ground. 
Two years later a bigger 500cc brother was brought out, the M 67.  
Shortly after that four cylinder production was stopped altogether with FN. 
The ohv singles were very successful, but the factory realised they were mainly appealing to  the sporty type of rider so it was decided to produce a side valve unit construction model as a utilitarian type of machine . 
The model M70 had bore/stroke dimensions of 74×80.5 mm , unit construction engine and 3 speed gearbox. 
The external flywheel of the early models was coloured red, hence the model’s nickname of           “ Moulin Rouge”. 
To prove the model’s reliability   two French army officers and a Belgian mechanic crossed the Sahara desert with M 70s in April, May and June 1927. 
They covered 6300 KM of desert without  the machines failing them. 
A heroic performance, that brought much publicity to the factory and coined the name “ Sahara” for the brave little machine.
The Sahara was a very successful machine: it was an easy starter, its reliability was high and it had a remarkable top speed of more than 90 km/ hour. 
Petrol consumption 112 mpg, oil consumption  1800mpg.  
This nice bike is equipped with a Maglum dynamo and AMAC carburettor. 
It  has not run for a long time and needs checking over before putting it back on the road.