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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).
Design position status report on modifications for the 20/25 HP and Bentley chassis.

Identifier  ExFiles\Box 30\4\  Scan111
Date  12th March 1934 guessed
  
20/25 HP. CHASSIS.

ITEM. DESIGN POSITION.
-------------------------------------------- ------------------------

Rear Axle - Roller Bearing to replace ball journal Completed.
bearing on right hand side of
differential casing.

Gear Box - Screw Thread on Synchromesh Clutch Cones - Completed.
Experiment to overcome sticking of cones.

Petrol Tank-Tower to prevent petrol surging away from Completed.
suction pipes.

Lighter improved oil pump casting. In hand.

Starter Carb. and Controls for Horizontal RR. In hand.
S.U. carburetter.


BENTLEY CHASSIS.
----------------

Improved Engine Undershields. In hand.

Roller Bearing in Propellor Shaft Sliding Joint. Completed.

1° Front Axle - Strengthened Top Pivot Bearing and Completed.
3 bolter bottom flange.

Petrol Tank with inside filler - Mods to enable last Completed.
few gallons to be easily filled.

Duralumin Connecting Rod with big end shims deleted. Completed.

Metal Mud Excluders for rear shock damper ball ends. Completed.

Front Brakes - Stiffer Carrier Plates in steel - 12" and Completed.
14" dia. drums.

Lighter improved Oil Pump Casing. In hand.
  
  


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