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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
List of features for Chassis 23-EX undergoing a 10,000-mile trial.

Identifier  ExFiles\Box 11\3\  03-page038
Date  9th April 1930 guessed
  
CHASSIS 23-EX - 10,000 MILES TRIAL.

ENGINE. -
(1) Extra Cylinder lubrication.
(2) Crown Steel & Silchrome Exhaust Valves.
(3) Silico Manganese Tappets.
(4) Asbestos Valve Guides Packings.
(5) Nitralloy Crankshaft, large diameter crankpin with connecting rods to suit.
(6) Low Inertia Spring Drive.
(7) Clutch with Fabric on driven plate.
(8) Carburetter Exhaust heated, with latest Air Inlet, and Silencer.

EXHAUST. - New Exhaust System. Alum Front Suspension Box, Central Cut-out type Silencer.

Improved Clutch Lubrication.

GEAR BOX. - Rear Rubber Suspension, Damper for Brake Gear.

RADIATOR. - Staybright Finish. Thermostatically (Smith Calorstat) Controlled Radiator Shutters, Central Mounted, Filter in top tank.

BONNET. - Staybright Finish with New Type Locks.

REAR AXLE. - 60" Wheel Track. Wider Foot Brake Shoes, Springs moved outwards, and one shot lubrication connected to central pump.

FRONT AXLE. - One shot Lubrication connected to central pump.

PETROL TANK. - Revised Gauge Fittings, Nivex Gauge.

BIJUR PUMP. - 50% Increased Capacity.

REAR SHOCK DAMPER. - Spring Loaded Joints for Connecting Rods.

ELECTRICAL. - Half Charging System.

WHEELS AND TYRES - 20" Rims and Tyres.

Brakes - Anti squeak brake shoes
  
  


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