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).
Listing the weights of the new Phantom rear axle components.
| Identifier | ExFiles\Box 71\2\ scan0124 | |
| Date | 11th February 1926 | |
| X8840 To Hs{Lord Ernest Hives - Chair} from RHC.{R. H. Coverley - Production Engineer} RHC{R. H. Coverley - Production Engineer}3/BE. 11.2.2.6. RE NEW PHANTOMCodename for PHANTOM I REAR AXLE We give below weights of the above Rear Axle. Weight of Rear Axle complete (less Road Wheels) and less Propeller Shaft. 436.187 lbs. Weight of Prop:Shaft and Torque Tube(complete) 83.812 lbs. 520 lbs. Weight of Rear Axle complete (less Road Wheels) supported horizontally on centre line of Sphere Serrations. 479.000 lbs. Effort required to support Prop:Shaft on centre line of Sphere Serrations. 39.000 lbs. 518 lbs. RHC.{R. H. Coverley - Production Engineer} [Signature] | ||