British Motorcycles


Young were clip-on motorcycle engines produced from 1919 to 1923. The first engines were Mohawks, but this then changed to ones made by Waltham Engineering (Walton?) of North London.

The first clip-ons were a two-stroke 269cc Mohawk engine that fitted over the rear wheel of a standard bicycle, which it drove by chain. They then changed the make of engine and used one of 131cc. The aluminium cylinder, with a cast-iron liner, was mounted horizontally with the head to the rear. The ML magneto was chain driven and the mixture supplied by a WEC carburettor. The whole engine unit was carried in an aluminium cradle. Lubrication was by petroil, with the fuel carried in a cylindrical tank mounted above the frame top-tube.

Transmission was by chain to a countershaft carrying a clutch and then by a further chain on the left down to the rear hub.

The firm also offered a simple attachment to provide springing for the front forks and the unit remained in production until 1923.

See also E.G. Young, 1904...
Sources: Grace's Guide

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