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).
Ledger page detailing modifications for 25 HP chassis models from 1932.
| Identifier | ExFiles\Box 171\4\ img046 | |
| Date | 1st March 1932 | |
| X.No TITLE CHASSIS Date sent to Cosh N6120. Battery Ignition with distributor modfd. to D.Sch V 496 D73374 Dsv/63 D73379/81. 25 H.P. 27-2-32. V60S-8. Ignition Coil to DY{F R Danby}2503 built with 21,000 turns of 44 SWG. wire on all standard. 25 H.P. 9-2-32. X5340. Prop. Shaft. 3.00" Dia. 25 H.P. 1-3-32. X5480 Stronger Clutch Spring Third. Leverage To Lock. 25 H.P. 27-2-32. X5090. Camshaft .050" Increased Valve lift. 25 H.P. 9-2-32. X5460. 18 gall. Petrol Tank. 2.5 galls. reserve. 25 H.P. 8-2-32. X5040. Pistons 5.75/1 Comp. Ratio. 25 H.P. 9-2-32. | ||