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 for the '32 cwt' Comet, detailing modifications and estimated weight savings.
| Identifier | ExFiles\Box 132\2\ scan0139 | |
| Date | 3rd July 1940 | |
| Ev.{Ivan Evernden - coachwork} SPECIFICATION OF "32 cwt" COMET. Handwritten: Make new file for light body on Corniche chassis. 1115 | Item Description | Estimated weight saving over 11.B.V. | | :--- | :--- | | 1. Frame and pan 0.092 thick. Short frame gussets replaced by angle section as in Memo. Rm{William Robotham - Chief Engineer}/Clm.{D. D. Clapham}5/ML.8.3.40. | 37 ✓ | | 2. 6.50 X 16 tyres. | NIL. ✓ | | 3. Standard wheel centres with dural rims rivetted on. | 35 ✓ | | 4. Latest Buick type pivots, pivot pins and reduced size hubs.. PL.229. | 4 ✓ | | 5. Lower suspension levers of reduced section throughout. | 6 ✓ | | 6. Cast alum. torque arms. | 8 ✓ | | 7. Alum. twin valve front dampers. | 8 ✓ | | 8. Standard senior front roll rod. | NIL. | | 9. Corniche type front end with headlamps and mountings lighter than standard. | 5 ✓ | | 10. Dural radiator yoke without straps as Corniche. | 5. ✓ | | 11. Gordon Armstrong D.A.S. 12 rear shock dampers as Ripplet, but with alum casings. No hand control or relay pump in gearbox. | 9. ✓ | | 12. Steering column without column gear change. PL.274. | 12 | | 13. Magnesium senior gearbox with R.H. side change. Magnesium gear change bracket on frame. | 9 | | 14. 1300 size propellor shaft joints with whatever modifications may be found necessary by rig tests to prevent indentation of needle bearing tracks. Needle bearing outer races to be attached to rear axle pinion and rear end of front shaft by U clips as on Studebaker. This saves the equivalent of two flanges. Latest centre bearing PL.243. Sliding joint at rear of gearbox. | 10 ✓ | | ||