Six-wheeled Leyland Super Comet Announced
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riA SIX-WHEEL version of the PowerL Plus Super Comet has been introduced by Leyland Motors Ltd. for use as a 20-ton-gross tipper or truck mixer. Called the Power-Plus Super Comet 20, the new chassis incorporates many running units from the Super Comet range and uses the same cab.
The engine is the Leyland 0.400 and provision is made for a front power takeoff from the crankshaft. The five-speed. constant-mesh gearbox with optional six-speed overdrive is offered, with the additional option of an extra-low crawler gear ratio giving a bottom gear of 9353 to I. The step down gearing can also be used to split other ratios to provide a range of 10 effective forward gears.
The rear bogie has a rating of 16 tons
and consists of two driving axles with spiral-bevel hub reduction gearing. The drive to the axles goes first to a helical gear train in the first axle and is continued above the bevel gears to a lockable third differential and then through a propeller shaft to the rearmost axle. Various spiral-bevel input ratios coupled with the epicyclic gear train in the huh. which has a ratio of 4 to 1, make available overall ratios of 7.712, 6-25 and 5.555 to I. Rear suspension is by the Leyland four-spring -layout. The brakes are 15.5 in. diameter all round with 4.5-in.-wide linings at the front and 7-in. wide at the rear; total frictional area is 1,002 sq. in. Actuation is by an airpressure system with the usual Leyland assistance to the handbrake linkage.