Single Track Runabout.
If our recollections are correct, the Mauser is the revival of an idea put forward in America several years ago. The machine is an ordinary type motor cycle with rather lengthened wheelbase, driven by a B.M.W. engine, and having a car type body built on this frame. There are two seats in tandem, and in addition to the two ordinary wheels a central axle with a small diameter wheel at each end. When standing, or running slowly, the axle can be dropped, allowing the wheels to come in contact with the road, but when running normally the axle is raised, and the machine runs just like an ordinary motor cycle. The flat twin engine, being placed fore and aft in the frame, is particulaidy well suited for this type of motor cycle. It is carried under the floor-boards, beneath the passenger's feet, and is invisible from outside.
There are openings in the body to allow of a cooling draught.
The Motor Cycle, October 6th, 1921. p417
This machine bears a marked resemblance to the Mauser, and it is thought to be a prototype from around 1920. It uses the same system to activate the side wheels as the Mauser, and has a registration plate from Brandenburg.
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