1950 Lohmann 18cc ‘Bicycle-Diesel Engine’

This may not quite be a Diesel Motorcycle but you must admit, it runs on Diesel, amongst other things, and powers two wheeled machines.
1950 Lohmann 18cc ‘Bicycle-Diesel Engine’
The 18cc engine is of German manufacture and is designed to be clipped onto a bicycle. Its bore was 28mm and stroke 30mm. Made in the austerity era after WW2 it sold for the sum of £25.45 and was ideal if you needed to travel about cheaply giving its owner a reputed 300mpg!. Different sorces say the engine was produced in either 1949, 1951 or 1952. Fitted below the crank this engine drove the rear wheel by means of a roller. The interesting thing about this engine was that the compression was variable due to the fact that the 'Head' was movable by twist grip throttles. One presumes it was adjusted to what fuel was being used with the ignition taking place under compression. Apparently the engine came with a booklet carb jettings for various fuels. It could be run on either gasoline, diesel, kerosene or lamp oil. For the record compression ratio limots were between 8:1 and 125:1. The makers recommended 30:1 for starting the unit and 17:1 to run it. Top speed was said to be 16mph with the 2 stroke engine running at 6000rpm (0.8hp). It was said to be able to rev to 9000rpm (23mph).








1950 Lohmann 18cc ‘Bicycle-Diesel Engine’

1950 Lohmann 18cc ‘Bicycle-Diesel Engine’

1950 Lohmann 18cc ‘Bicycle-Diesel Engine’

1950 Lohmann 18cc ‘Bicycle-Diesel Engine’

1950 Lohmann 18cc ‘Bicycle-Diesel Engine’
1950 Lohmann 18cc ‘Bicycle-Diesel Engine’

1950 Lohmann 18cc ‘Bicycle-Diesel Engine’

1950 Lohmann 18cc ‘Bicycle-Diesel Engine’

1950 Lohmann 18cc ‘Bicycle-Diesel Engine’

1950 Lohmann 18cc ‘Bicycle-Diesel Engine’

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