[1][5][6] Heinrich and Wilhelm Hildebrand were steam-engine engineers before they teamed up with Alois Wolfmüller to produce their internal combustion Motorrad in Munich in 1894.

It produced 1.9 kW (2.5 bhp) @ 240 rpm[1] propelling a weight of 50 kg (110 lb)[4] up to a maximum speed of 45 km/h (28 mph).

[1]The fuel-air mixture from the surface carburettor was regulated by a valve operated by controls on the handlebar.

[8] With no double action available in the petrol engine, and no flywheel effect apart from the movement of the rear wheel, the return impulse for the piston was provided by heavy rubber bands.

[3] Approximately two thousand examples of the motorcycle were built,[5] but with a high initial purchase price and increasing competition from improving designs (this model was entirely "run and jump" with neither clutch nor pedals) it is not thought to have been a great commercial success.