75 The design of the cavities in which the vanes and the blocks work is such that progressive suspension and damping is obtained. The controlling arm at the front is 10 inches long, cast from LM10W alloy with the safety factor of three to one. A Burman car-type worm-and-nut steering box links the front wheel assembly to the steering wheel, a short drag link with adjustable ball-joint ends being provided. At the rear, the two wheels are carried on Andre units similar to that fitted at the front, an exception being that the trailer arms carrying the wheel spindles are each 7 inches long and made of malleable iron. Both front and rear stub axles are bolted in place and mount three-stud, interchangeable, wheels on Timken taper roller bearings. On all three wheels braking is by 7 inch diameter drums containing 1 and 1/4 inch wide shoes operated by the Lockheed automatically balanced hydraulic system, the master cylinder for which is carried under the front bonnet alongside the steering box. A parking brake works on the front wheel only. Tires are 4.00 inches by 8 inches balloon type and the disc wheels are specifically produced for this vehicle. The power unit is the 346 cc Villiers two-stroke Mark 28B, cooled by a flywheel fan and air conduits. With the threespeed and reverse Burman gearbox it is mounted in a sub-frame of Z-section steel. The engine is flexibly supported on “Silentbloc” bearings, and the gearbox is mounted rigidly. Primary drive is by three Goodyear V-belts, and final drive by a 5/8 inch motorcycle chain. The power unit and transmission are carried on the nearside of the chassis at the rear, driving one wheel, but Motor Cycling’s man found that no adverse effect is felt upon the steering as a result of this method of applying the drive. Caption: Above is seen the car-type clutch, accelerator and hydraulic brake controls with parking hand brake.
RkJQdWJsaXNoZXIy MjA0NTk=