P. and M. (Stand 74.)
3½ h.p.; 83x89 mm. (498 c.c.); single-cylinder four-stroke; side-by-side valves; mechanical lubrication; B. and B. carburetter; E.I.C. chain-driven magneto; two-speed expanding clutch gear; chain drive; 26 x 2¼ in. tyres. Price £125.
Phelon and Moore, Ltd., 4, Berners Street, London, W.l.
Minor alterations only have been effected in the popular 3½ h.p. P. and M. The front brake is now a shoe of compressed Ferodo operating in a dummy belt rim on the wheel, and another improvement is found in the cushioning device incorporated in the engine sprocket. A feature of this machine is, of course, the mechanical lubrication, which consists of a pump positively driven by a worm formed on the exhaust cam wheel. This pump forces oil alternately to the cylinder and to the big end, and not the least of the advantages attained is the gain in oil economy. Another interesting feature is the hand brake ratchet in connection with the brake pedal, by means of which the contracting band rear brake may be left on without the driver having to keep a continual pressure upon the pedal. For sidecar use in hilly country, this is a refinement which proves particularly useful.
If it is so desired, Lucas dynamo lighting may be provided as an extra, and the small cylindrical dynamo is housed over the crank case immediately behind the cylinder and driven by an enclosed chain from the magneto drive.
Two sectioned engines are also exhibited, and the operation of the mechanical lubricator is demonstrated by an electrically-driven model causing considerable interest and attracting a crowd of spectators. Another interesting small point is that the tank is now finished in a benzole resisting enamel, a curious fact being that only a green finish can be obtained in this-special material. A subsidiary hand pump is also housed in the tank, to supplement the mechanical lubricator should, occasion arise.