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).
List of engineering modifications and their status for the 3 1/2 Litre Bentley Chassis.
| Identifier | ExFiles\Box 30\4\ Scan093 | |
| Date | 19th February 1934 | |
| - 8 - BY.1/G.19.2.34. 3 1/2 LITRE BENTLEY CHASSIS. RR. Sch. 413 Mod. to Dist'n. Board using Cartridge Fuses. Waiting E's approval. RR. Sch. 419 Revised Switchbox. Detail drawings are in hand. LeC. 3632 Crankshaft with integral Balance Weights ...... Recd. 11.9.33. Awaiting E's final design. RR. Sch. 507 Modified Position of Battery Earth Terminal. Detail drawings are in hand. RR. Sch. 540 Semi-Isolation Coil Arranged for easy changeover. Superseded by RR. Sch. 586. RR. Sch. 543 Modification to Rear Brakes Screw Adjustment. (Foot). Detail drawings completed and issued ............ 1.2.34. RR. Sch. 550 Modification to Brake Adjustment (Front Brakes). Superseded by RR. Sch. 607. RR. Sch. 552 Instrument Patch for Lighter Instruments. Detail drawings completed and issued ............ 17.1.34. RR. Sch. 559 Modified Pedals to suit centre accelerator. Detail drawings are in hand. RR. Sch. 563 Valve Holding and spring replacing tool. Not to be detailed at present. RR. Sch. 572 Sch. for Bonnet Angles on Dash to replace rubber. Detail drawings are in hand. RR. Sch. 577 Modification to 2nd. Stay - Front Wing. Detail drawings completed and issued ............ 23.1.34. N. Sch. 3845 Mud Excluder for Side Steering Tube. Rear End Joint ...................................... Recd. 10.11.33. Detail drawings completed and issued ............ 20.1.34. N. Sch. 3887 Rear Brake Equalisers with Spherical bearings etc. to correct alignment ..................... Recd. 9.12.34. Detail drawings completed and issued ............ 2.2.34. Ev.{Ivan Evernden - coachwork} S. 116 Rear Axle Dampers & Battery Xmember ......... Recd. 25.1.34. Detail drawings completed and issued ............ 7.2.34. | ||