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).
The speedometer drive ratio for the EAC.10 gearbox to order the correct part.

Identifier  ExFiles\Box 15\5\  Scan035
Date  7th December 1927
  
To BY/SS.{S. Smith} from Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson}
[Handwritten, crossed out: X6310]
[Handwritten: X7310]
Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}3/LG7.12.27.

We understand that the speedometer drive ratio in EAC.10 gearbox is different to the present standard.
We should be obliged if you will let us know what the/ratio is so that we can order up a speedometer for the car.

Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson}
  
  


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