THE ROYAL ENFIELD
The special features of this excellent machine are given prominent attention. They are the result of long and careful experiment.
The manufacturers of this machine, the Enfield Cycle Co., Ltd., Hunt End, Redditch, have keenly followed the motor bicycle question, and although experimenting with various types last season, did not definitely decide on their design until the last Stanley Show.
The illustration on the next page gives a general idea of the arrangement of engine, tank, carburetter, transmission, etc., but there are several details which require special description, and by the courtesy of the makers, we are enabled to also give illustrations of some of the important details.
The contact breaker plate has a bush fitting over an extension of the aluminum crank chamber; this bush is of large diameter, and about 0.75 inch wide. There is, therefore, no chance of the plate developing side play through wear, and upsetting the accuracy of the adjustment between cam and spring.
Large valves are fitted to both exhaust and inlet, the exhaust pipe being especially large and strong, terminating under bottom bracket, where a silencer of ample dimensions is firmly bolted to the bridge of the bicycle frame.
In our illustration of the inlet valve, the arrangement for testing whether valve is free is clearly shown.
The exhaust valve is fitted with a very certain, but simple, lifter, and as the lever operating it is attached on the right handlebar, and the switch on the left, the whole command of the machine is in the rider's hands, without leaving go of the handles.
The carburetter is quite automatic, and is entirely governed by the adjustable milled top of stalk A, referring to the illustration in the section; stalk marked A terminates in needle point with a screw adjustment. This has to be opened from a quarter to half a turn; the petrol flows along the passage marked B, and rises to the needle valve, which is under the stalk marked D.
The tank to which the carburetter is attached contains on gallon of petrol, and a compartment for induction coil and accumulator.
The frame is specially made throughout, and has been designed purposely for a motor bicycle. Special thick gauge tubing is used everywhere, and the wheel base has been considerably lengthened. The front forks are of a most substantial prttern, being made D section, and of great strength. The crown is the same as the one used on the Royal Enfield tricycle for the last 18 months, and which has given entire satisfaction.
The brakes are two in number; both are hand brakes, one acting on the back wheel, and the other on the front. It was deemed advisable to fit two brakes, as running down a steep hill with the valve lifter raised, one brake was not found sufficient to arrest the machine suddenly, but with a gentle application of both, this machine can be stopped in a few yards in cases of emergency.
There are undoubted advantages to having the motor in front, and it ensures a more even distribution of weight.
We have had one of these machines for some weeks and have verified it runs very well. It is certainly the most satisfactory 1.5 h.p. we have come across. The placement of the levers and taps is as simple as possible, rendering the controls most easy.