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).
Drawing illustrating the development of various piston designs.
| Identifier | ExFiles\Box 2\1\ B002_136 137-page11 | |
| Date | 28th April 1932 | |
| PISTON DEVELOPMENT DIA. A DIA. B KEY DIAGRAM FOR DIAMETERS PHANTOM PI C.I. HEAD MATERIAL S.B. WEIGHT 1 LB 10 1/2 OZS P.I. C.I. HEAD MATERIAL S27 WEIGHT 1 LB 10 3/4 OZS P.I. W.A.M. HEAD MATERIAL S.S. 7 WEIGHT 1 LB 14 1/2 OZS P.II SKIRT SLOTTED MATERIAL R.R. 7 WEIGHT 1 LB 15.0 OZS P.II MEDIUM SKIRT MATERIAL H.B. WEIGHT 1 LB 13 1/2 OZS BOTTOM RING LAND Ø 3.250 DIA. DIA A 4.368, DIA B 4.350 GUD. PIN ¢ P.II LONG SKIRT MATERIAL L.5. WEIGHT 1 LB 15 1/2 OZS SLOTTED FOR MOVEMENT .0025 20/25 HP LOW COMP. MATERIAL DTD. WEIGHT 15 OZS 20/25 HP HIGH COMP. MATERIAL L.8. WEIGHT 15 OZS BOTTOM RING LAND Ø 3.250 DIA. DIA A Ø 3.525, DIA B Ø 3.517 MATTING LAND .015" X 1" 20/25 HP MATERIAL L.8. WEIGHT 15 OZS SLOTTED FOR MOVEMENT .00065 ROLLS ROYCE LTD APR 28 1932 DERBY 4845 | ||