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 special brass suction piston for an Alvis 'Firefly'.
| Identifier | ExFiles\Box 121\4\ scan0090 | |
| Date | 3rd February 1933 | |
| ALT. ALTERED FROM REASON DATE KEYWAY 5/32 WIDE x 3/32 DEEP x 13/16 LONG. 3/16 WHIT. 2 5/8 DIA TO SUIT SUCTION CHAMBER 3 VEE GROOVES 3/64 WIDE. 1/8 DRILL. WEIGHT OF FINISHED PISTON & ROD 16 OZS MADE FROM PART No 355 Handwritten text: 15/8 C Handwritten text: +/- .040 SUCTION PISTON - SPECIAL BRASS LIGHT. HVS FOR ALVIS 'FIREFLY' MATL BRASS THE S.U. Co. ADDERLEY PARK. B'HAM. PART NO. 1322 DRAWN W.H. DATE 3-2-33 | ||