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).
Specification comparison document detailing revisions to rear hubs, front axles, and brakes.
| Identifier | ExFiles\Box 169\1\ img208 | |
| Date | 25th January 1932 | |
| -2- RHC{R. H. Coverley - Production Engineer}/WSC{W. S. Cassel}4/IS.25.1.32. Previous Specification. Rear Hubs to LOP.G.78505-N.S.3177. RR.Cast Iron Ribbed Brake Drums - Removed. 2-G.79502 Brake Drums. 2-G.79034 End Plates. 24-G.79032 Studs. Revised Specification. Rear Hubs to LOP.G.78505. N.S.3177. The following details fitted to N.S.3177. - Ribbed Brake Drums in High Chromium - Cast Iron. 2-G.79502 Brake Drums(Lake & Elliott) 2-G.79034 End Plates. 24-G.79032 Studs. Twin Spoke Wheel Type Hubs. Front Axle & Brakes to G.78450. Built up Brake Drums to G.L.474 - Removed. G.79541 Alum Brake Drums. G.79542 Liners(Lake & Elliott) Front Axle & Brakes to LOPL G.78450 - N.S.3176. The following New details fitted to N.S.3176 - Ribbed Brake Drums in high Chromium Cast Iron. 2-G.79503 Brake Drums-Lake & Elliott. 2-G.79038 End Plates. 24-G.79032 Studs. 1-ea:G.79039/40 Mud Excluders. - existing modified. Twin Spoke Wheel Type Hubs. RHC{R. H. Coverley - Production Engineer}/WSC.{W. S. Cassel} | ||