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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).
Responding to a request for chassis and body specifications, detailing various drawing numbers and corrections.

Identifier  ExFiles\Box 179b\1\  img188
Date  25th November 1932
  
TO HS{Lord Ernest Hives - Chair}/Lid.{A. J. Lidsey} from EV.{Ivan Evernden - coachwork}
LID{A. J. Lidsey}
EV{Ivan Evernden - coachwork}8/25.11.32.
See me
KY-53
copy to HF.{H. W. Frost - Coachwork Inspector} E.{Mr Elliott - Chief Engineer}
HE BENSPORT. FIRST CAR.

We thank you for your memo Hs{Lord Ernest Hives - Chair}/Lid{A. J. Lidsey}5/MA.18.11.32. asking for a specification of the chassis as far as the body requirements are concerned; which has not been answered sooner because we have found it very difficult to define any of the sections by quoting scheme drawings for the simple reason each drawing has had so many subsequent modifications made to it.
What you really need is the Production Dept. layouts and the L.O.Ps. which would be the only safe way to ensure the complete collection of all the information.
We realise that this information cannot be available in time for this first car so we are going to do our best to give you a brief specification but we will not be held responsible for its accuracy.

BODIES
The design of the body for this car is N.Sch.3478. It is correct as far as the body goes but the dash to front axle dimension should be 38.000ins. and not 36.000ins. The same remarks apply to the design of the open body N.Sch.3479.
The Wheelarch Clearances N.Sch.3485. are correct.
The Scuttle Isolation Drawing N.Sch3486. is correct in principle but none of the dimensions should be worked to. The bonnet and dash shape has been changed several times since this was drawn.
The 1/4 scale layout of the body, N.Sch.3487. is correct as far as the body is concerned but the dash to front axle dimension is wrong.
The position of the bottom edge of the steering wheel is right but that of the box itself is not. The steering wheel should be 18ins. dia.
The dimensions for the overhang of the bonnet behind the dash are correct and so are those for positioning the body brackets, step irons and wing stays.
The positions of the 1st, 2nd, battery & 3rd. crossmembers are correct.
The dimensions to the petrol tank filler, which are supposed to be the same as those for Pere 2., are correct.

FRAME.
Layout of Frame, Transmission and Steering, N?Sch.3579. gives the full particulars of the frame, springs and fittings, steering column with wheel and box positions and the transmission centre-line. The position for the centre line of No.6 cyl. from the back of the dash measured up the transmission line should be 3.656.ins. and not 3.700ins.

SPRINGS.
Detail drawings of these already exist.

STEERING.
Column and box the same as Pere.2 except for length. For controls see N.Sch.3544.

BONNET.
The latest layout of the bonnet is N.Sch.3502. Since this was drawn the dash to front axle dimension has been increased to
  
  


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