Rolls-Royce Archives
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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).
Letter to Messrs Hardy Spicer & Co. Ltd. providing requested technical data.

Identifier  ExFiles\Box 94\4\  scan0166
Date  21th April 1938
  
+262
337
Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer}6/AP.
April 21st.1938.
Messrs Hardy Spicer & Co.Ltd.,
Birch Road,,
Witton, BIRMINGHAM.6.
For the attention of J.A.Daniell Esq.
Dear Sirs,
We thank you for your letter of 6th inst. Mr.Grylls is at present away from the works and has asked the writer to answer your queries.
The data you require is:-
Engine torque 200 lbs.ft.
Gearbox low gear ratio 0.4
Axle ratio 4.3
Spring centres. 44.5
Track. 58.0
Weight laden on spring pads 2090 lbs.
Distance track line from inside
face of hub bearing 2.000
Distance track line from centre
line of hub bearing 1.550
Yours faithfully,
FOR ROLLS-ROYCE LIMITED.
  
  


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