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 proposed engineering modifications and their associated cost savings.
| Identifier | ExFiles\Box 6\6\ 06-page122 | |
| Date | 3rd February 1937 | |
| -3- Brought Forward: £3 5 6 Clutch & Flywheel. Revert to the one piece flywheel ................ £2 - - Gearbox. Internal material mods ...................... 6 - L.S Casting ................................... 3 - Unground gears, say ........................... 2 - - Propeller Shaft. Hardy Spicer .................................. 1 10 - Scuttle Jacks. .......................................... 7 - - Rear Axle. Correct rear axle tubes ....................... 1 10 - Brakes. Big Cent Drums ................................ 5 10 - (S170 did cost. Recommend we start on the job at Bell. right away) Modified B.S. lever to M.Sch. 4y71 ......... Unknown Road Springs. Woodhead road springs Simplified lubrication Small eye to front end of rear spring ........ 3 13 - Front Suspension. Deletion of needle roller bearing from front suspension bearing for top triangle to be bronze. Bottom triangle Silent-bloc. ........ 2 - - Instruments. Speedometer & speedo drive A.C. Type. ....... 3 6 Electrical. Delco Remy Distributor ........................ 1 1 - Ignition Coil E.73673 ......................... 16 - Exhaust System. No stainless steel, simplified construction. .. 2 - - Total saving: £37 18 6 | ||