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 ten special parts fitted to a specific car.
| Identifier | ExFiles\Box 46\2\ Scan239 | |
| Date | 11th May 1922 | |
| X4086 Hy.{Tom Haldenby - Plant Engineer} frm Ms. c. to MF. c. to BY.{R.W. Bailey - Chief Engineer} c. to E.{Mr Elliott - Chief Engineer} c. to Ds. Rel/LG11.5.22. 7-COBLANK-11. X4086 The special parts fitted to this car are as follows:- 1. R-W Wire Wheels. 2. Damping Ring fitted to brake drums. 3. Woodhead design of springs - all round. 4. Rear shock absorbers single stage - 60 lbs. 5. Oil Pump fitted with Fellows cut gears. 6. Rocker arms - rollers given extra clearance. 7. Stronger Rotor for high tension distributor. 8. Wefco Gaiters to springs and shackles. 9. Clutch springs - 120 lbs. 10. Special washers to bolts holding undershield. Hs.{Lord Ernest Hives - Chair} | ||