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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).
Comparison of specifications for projects B.III and B.50, detailing potential modifications for a new model.

Identifier  ExFiles\Box 148\5\  scan0231
Date  25th November 1937
  
-2- De/Ev.{Ivan Evernden - coachwork}29/N.25.11.37 Cont'd.{John DeLooze - Company Secretary}

B.III. B.50.

Engine 4¼. Wraith III.
Wheelbase 10' 4".
Dash to rear axle 89.5000"
Overslung frame.
Overall height 5' 3½".
Headroom 45.5000"
Bodies - Close Coupled Saloon.

No.3. Project - PD.29.

This project consisted of seeing what could be done to re-introduce B.50 into the programme on the lines of the Duffield Bank Project.

The first move was to lower the B.III frame, as shewn on PD.32, to get the headroom for B.50 of 47.000, inches, and the car height overall remaining 5' 3½".

B.III. B.50.

Engine Wraith III - 4¼ litre. Engine-C.I. 3½ litre(JNR.{Charles L. Jenner}Project)
Wheelbase. 10' 4" Wheelbase 10' 1" & 10' 6"
Dash to rear axle. 89.500" Dash to rear axle 94.500"
Overslung frame. Overslung frame.
Overall height 5' 3½" Overall height 5' 3½"
Headroom. 47.000" Headroom. 47.000"
Bodies. - Close Coupled Saloon. Bodies - Close Coupled Saloon of B.III.
Sixlight saloon with 5" more room in rear compartment.

The B.50 frame would be made from the B.III dies by removing 3 inches from the front end to suit the shorter engine, for the Close coupled body. The Six-light body would have a 5 in. section added to the rear of the straight portion of the frame. All the bodies have common front and rears to facilitate production by dies.

Continued.....
  
  


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