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).
Weight comparison sheet for various car parts across different models and design estimates.
| Identifier | ExFiles\Box 10\5\ 05-page009 | |
| Date | 2nd May 1928 guessed | |
| sheet 1 Parts. PH.III WRAITH EXPL. DEPT. ESTIMATE. WRAITH DESIGN ESTIMATE. 26/30. Wt lbs. 2 top triangular 17.5 17.5 lbs. 13 lbs. Front axle with 60.3 levers. lbs. control - no brakes. 2 bottom triang- 20.75 18 lbs. 16 lbs. 2 road springs. 58.4 ular levers. lbs. 2 shock dampers. 23 2 yoke pieces. 15.5 8.5 lbs. 8.5 lbs. Engine & rad'r.{Sir Henry Royce} lbs. 2 spring pot. 106.25 105 lbs. 105 lbs. crossmembers. 13 assemblies. lbs. Front crossmember 16.4 lbs 15 lbs. 13 lbs Front crossmembers, 11.5 with forgings. Front pan & 58.1 50 lbs. 40 lbs. rear spring. 3.25 radiator support. lbs. anchorage bkts. Centre steering 19.5 16.5 lbs. 14 lbs. front shackle 3.5. levers. and lbs. cross steering tube. Distance piece & 26 lbs. 32 lbs. 30 lbs. flanges through frame. TOTAL 280 lbs. 262 lbs. 237.5 lbs. 171. | ||