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 detailing the weights of Spectre engine connecting-rods and pistons.
| Identifier | ExFiles\Box 93\1\ scan0117 | |
| Date | 6th November 1935 | |
| SPECTRECodename for Phantom III WEIGHTS Connecting-Rod Weights (RR. BZ/ Bearings) WEIGHT IN LBS. Table 1: | Type of Rod | Rod. | Piece No | Small End | Large End | Total Wt. Each Rod | Total Weight of Assembly | |-------------|--------|----------|-----------|-----------|--------------------|--------------------------| | Strapped | Plain | E86118 | 0.5156 | 1.2187 | 1.7343 | | | | Forked | E86117 | 0.6093 | 2.250 | 2.8593 | 4.5936 LBS | | Curved Foot | Plain | E84682 | 0.5312 | 1.2031 | 1.7343 | | | | Forked | E.84681 | 0.6406 | 2.3437 | 2.9843 | 4.7186 LBS | WEIGHT OF SMALL END WITH ROD SUSPENDED AT 'A' WEIGHT OF LARGE END WITH ROD SUSPENDED AT 'B' NOTE! RODS ARE WEIGHED COMPLETE WITH BEARINGS, SMALL END BUSHES, BOLTS, NUTS & SPLIT PINS Piston Weights (L op. E.86708) WEIGHT IN LBS. Table 2: | Piston | Gudgeon-Pin With End Caps | Piston Rings | Total Weight of One Piston | |--------|---------------------------|--------------|----------------------------| | 1.2031 | 0.2851 | 0.0937 | 1.5819 LBS. | | E87347 | E76706 | EB.1493 (1) | | | | | EB1494 (2) | | Stamp: ROLLS-ROYCE, LTD. PRINT ROOM NOV 7 1935 DERBY | ||