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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).
Agreed modifications to the subframes of SS and India bodies, including diagrams.

Identifier  WestWitteringFiles\T\January1929-February1929\  Scan115
Date  2nd May 1929
  
BY.{R.W. Bailey - Chief Engineer} FROM DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork}
Copy to - HS.{Lord Ernest Hives - Chair}
re. SUBFRAMES. X5380 X7380
As a result of our experiences with the mounting of SS.{S. Smith} and India bodies we agree to the following modifications to the subframes of both chassis.
(1) Owing to the upsweep of the frame at the rear having considerable variations we suggest the rear supporting bracket on the frame be fitted, not at a given height above the level top of the frame, but at a fixed dimension below the top of the frame at the centreline of the bracket.
Diagram text: TOP OF, C/L OF FRAME, FIXED, FRAME
This would assume that the top of the subframe is always slightly above the top of the chassis frame - see section A-A on F.79576.
(2) We agree to the clearance between the chassis frame and the main frame being increased to 1". The front ends of the subframe cannot be moved. The brackets will need lengthening.
(3) We agree to packing being provided under the front as well as the rear supports to enable the dash to be matched up with the scuttle - (we believe we have already instructed this.)
(4) We agree to a slotted hole being provided in the centre support bracket on the subframe as well as the large clearance hole in the chassis frame, thus:
Diagram text: 400, ALUM WASHERS, .050.
( G )
  
  


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