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New Tilling-Stevens Battery-electric

11th August 1950, Page 42
11th August 1950
Page 42
Page 42, 11th August 1950 — New Tilling-Stevens Battery-electric
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A NEW 5-ton low-loading batteryI-1 electric chassis, with a downswept frame, underslung-worm-driven axle and a Lockheed continuous flow braking system, will be among the Tilling-Stevens exhibits at Earls Court next month. Although this model, termed the G.E.V., has been made to the requirements of Glasgow Cleansing Department, its use as a low-loader is applicable in fields other than refuse collection.

The G.E.V. is complementary to the existing straight-framed 5-tanner, made by Tilling-Stevens, Ltd., Maidstone, and contains parts common to that model and to the Tilling-Stevens passenger chassis. Its frame, with deep wheelarches and side rails tapered inwards over the front axle to give a good steering lock, owes much to the passengerchassis design. It has a 16-ft. wheelbase and a turning circle of 59 ft.

Frame Construction

The frame side rails are formed of channel section, baying a maximum depth of l0 ins, and flanges 3f ins. wide. Pressed-steel cross-members are fitted adjacent to the spring anchorages, with two additional members which support the motor amidships in the chassis.

The motor, developing 17 h.p. at 1,250 r.p.m. at the one-hour rating, is of Tilling-Stevens manufacture, and is connected to the underslung-worm-drive of the rear axle by a single shaft equipped with Hardy Spicer universal couplings. The final-drive ratio is 11.3 to 1. This axle is of the same pattern as that used in the 5-ton straight-frame battery-electric, but inverted and with the suspension rearranged accordingly.

To maintain a low frame height, the front axle has been "borrowed "• from B8 a passenger chassis, and the springs attached to brackets outrigged from the frame side members.

In the braking system the Lockheed hydraulic pump is attached inside the chassis frame on an adjustable bracket, and is driven from the propeller shaft by belts and pulleys. This pump is arranged to give a high boost at low speed, so that the pedal effort is light and constant. The brake shoes, actuated through the Girling two-leading-shoe system, take effect on 16-in.-diameter drums.

The rotary solenoid-operated quick break controller gear, with a damper time-delay arrangement between the pedal and controller to give progressive acceleration, is common to both battery-electric models. An unbreakable-grid resistance is carried within the frame at the front of the chassis.

Adaptations to the frame for operation in Glasgow have been made to maintain a measure of standardization with the Garratt electric refuse collec

(ors in use there. The Tilling-Stevens G.E.V. model has special outrigger brackets on the frame side rails to receive a side-tipping body of Garratt pattern. These refuse-collection bodies far the Glasgow vehicles are being built by Glover, Webb and Liversidge, Ltd„ London, S.E.

Another detail of Garratt origin is the battery mounting between the cab and body for rapid change between shifts. The battery specified is the Tudor K.F.17, which has 44 cells of 520-amp.-hr, capacity at the five-hour rating.

Seating accommodation for four loaders is provided in the double cab, which is constructed with a hardwood frame covered by steel panels. A quickly detachable front panelis provided for servicing the control gear.

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Locations: Glasgow, London

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