The Sunbeam S7 and S8 are British motorcycles designed by Erling Poppe with styling loosely based on the BMW R71 designs that were acquired as war reparations by BSA. Built in Redditch, the unusual en
A mildly customised Sunbeam S7 motorcycle.
Mist Green S7 with characteristic balloon tyres
A worm drive is a gear arrangement in which a worm meshes with a worm wheel. Its main purpose is to translate the motion of two perpendicular axes or to translate circular motion to linear motion.The
Worm and worm wheel
A double bass features worm gears as tuning mechanisms
A worm gear cotton gin from Assam
A worm drive controlling a gate. The position of the gate does not change, once set