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).
Blueprint for a Crankshaft Balance Weight for a 20 HP Chassis.
| Identifier | ExFiles\Box 103\3\ scan0054 | |
| Date | 12th May 1931 | |
| SCH. 1402 THE SIZE OF THE BALANCE WEIGHTS ARE SUCH THAT THEY BALANCE THE CRANK PIN WEBS AND CRANK PIN DETAILS, BUT NOT THE CONN: ROD. CRANKSHAFT BALANCE WEIGHT. SCALE 1/1 20 H.P. CHASSIS, SCH. 1402 OFFICE PRINTER PRINT ROOM 12 MAY 31 DERBY | ||