the 1927 Windhoff 750 is arguably the most important motorcycle developed between world wars, and that includes surpassing even the Brough Superior SS 100.
Although both expensive and exclusive, four-cylinder motorcycles were not unknown in pre-war days – Henderson, Indian, Ariel and Nimbus being among the most successful - but few were as technologically advanced – or as imposing – as the German Windhoff. It was introduced at the Berlin Show in 1927.
the 746cc engine was a four cylinder, four stroke, and it used an overhead cam. It had cylinder liners and internal oil liners
This was a first for a four cylinder motorcycle and now common in the majority of production bikes and modern superbikes. The cam operated in an aluminium head and directly activated the valves via a series of cogs run off the camshaft.
Not only was its overhead-camshaft engine oil cooled, it also functioned at the motorcycle’s frame. The crankcase and cylinder block were combined in a monumental alloy casting, to which the steering head was directly bolted, while four straight tubes supported the rear wheel.
it weighed 400 pounds, and had 22 hp