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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).
Using jacks from the Phantom II model to increase ground clearance on the 20/25HP car.

Identifier  ExFiles\Box 26\3\  Scan192
Date  1st December 1932
  
-2- HS{Lord Ernest Hives - Chair}/Lid.{A. J. Lidsey}3/MA.1.12.32. Cont'd

20/25HP.

With regard to the use of jacks on this car to suit customers individual requirements, we have agreed that a jack of the same thickness(2.5") as is used for standard P.II cars will be supplied. By using this jack the ground clearance will be increased considerably as compared with what has been previously used.
On the front axle the ground clearance will be approximately 7.0" and on the rear axle the jacks will be approximately level with the drain from the hubs.

This we think is the best we can do. (In the event of standardisation on this chassis it might be advisable to use special brackets, as on P.II, and by so doing obtain still further ground clearance.)

For this car brackets, and clips will of course be supplied with the jacks.

HS{Lord Ernest Hives - Chair}/Lid.{A. J. Lidsey}
  
  


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