WE had a recent opportunity of carefully examining the latest pattern 2½ h.p. Grandex motor cycle at the showrooms of the Grandex Cycle Co., 28, Gray's Inn Road, W.C. The motive pcwer is a 2½ h.p. Precision engine, m.o.v., dimensions 70 by 76 mm. The frame is somewhat out of the common as regards design, as the top tube is curved and the tube below it is brought exactly parallel with the above, and the tank is made to fit in between the two. The petrol pipe union is situated at the lowest portion of the tank so that the last drop may be used up. The engine is supplied with gas by means of a Brown and Barlow handle-bar controlled carburetter, while the ignition is by the lightweight Bosch magneto. Druid forks are supplied, as also are a good stand and luggage-carrier. Points of convenience are well studied, as the machine is supplied with rubber footrests, petrol gauge, petrol drain tap, and silencer cut-out. The belt rim brake is controlled by a pedal, and its shoe acts on the rear belt rim. The machine is of pleasing appearance, and has the advantage of being a true lightweight, the weight being, we are assured, only about 105 lbs.
D. R. Greig, who rides a 3¾ h.p. Grandex, uses a long pipe extending from the carburetter main air entrance and projecting forward, so that a kind of forced induction takes place. A special adapter is fitted, and this rises above the level of the jet; through this choke tube the air is forced at high speed. Greig says the results are excellent.
The Motor Cycle, April 6th, 1911.
