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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).
Specification sheet for modifications to car 35-EX after 15,000 miles of testing.

Identifier  ExFiles\Box 92\3\  scan0052
Date  20th November 1936
  
300 a

Sg.{Arthur F. Sidgreaves - MD} from Rm.{William Robotham - Chief Engineer}
C.
Hs.{Lord Ernest Hives - Chair}
E.{Mr Elliott - Chief Engineer}
By.{R.W. Bailey - Chief Engineer}
Da.{Bernard Day - Chassis Design}
_______

Rm{William Robotham - Chief Engineer}6/R.20.11.36.

P.III 15,000 MILES.

Herewith specification for 35-EX now running in London.

As soon as the engine bearings and forgings for wheel movement are completed we shall bring this car back to Derby, carry out the necessary modifications, and then proceed with tests in France.

CHASSIS.

(1) Lightened radiator matrix. [handwritten] Simplified [/handwritten] [handwritten] Simplified steam [/handwritten] valve.

(2) Concealed radiator bracing. [handwritten symbol]

(3) Clutch with more durable material and increased cushioning. [handwritten] Lighter clutch springs & greater pedal travel [/handwritten]

(4) Increased clutch pedal travel to reduce effort.

(5) Improved front shock absorbers with more silent operation. [handwritten symbol]

(6) Gearbox with modifications to prevent 2nd and 3rd speeds coming out. Also improved castings to prevent oil leaks.

(7) More [handwritten, strikethrough 'efficient'] Less Costly [/handwritten] efficient fan and fan drive.

(8) lightened and cheaper exhaust system.

(9) Lucas W.T.22 type horns.

(10) Battery box to reduce cost.

(11) Improved coil.

(12) Rubber spring shackles & rubber between axle and frame. [handwritten symbol]
  
  


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