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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).
Fitting issues and required adjustments for subframe bodies, specifically regarding clearances and packing.

Identifier  ExFiles\Box 5\2\  02-page219
Date  12th December 1928 guessed
  
contd :- -2-

(c) Battery box cross member. This fouls the subframe heel board member. There appears to be nothing to prevent the battery box cross member from being moved rear-wards.
(d) Front subframe support. Adjustment by means of packing at this point is required. This type of adjustment is given and appreciated at the rear subframe support, but is really more necessary at the front. On 14-G-4 we had to alter the chassis brackets to allow the body to drop sufficiently to get the correct floorboard height, and scuttle position relative to the dashboard.
(c) Centre subframe supports. These are designed to control the position, laterally, of the body. Can they be altered to allow more clearance between them and the chassis frames, so that thicker packings can be used? On 14-G-4 the body was finally mounted in position and the thickness of the packings required was .095" on one side and .002" on the other. Had the body been slightly more out-of-line we should have been compelled to altered the brackets.

All these remarks apply to subframes generally, the complaints are common to all subframes we have fitted. The subframe body should be the easiest body to mount, at present it is more trouble than a non-subframe body. The whole trouble is due to too fine clearances, with good working clearances that will allow for variation in chassis and subframe dimensions at the points enumerated in this memo., the subframe will will be, as it is intended to be, the easiest type of body to mount on the chassis.

Hs.{Lord Ernest Hives - Chair}
  
  


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