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).
Performance graphs comparing Leather Piston and Petrol Pump Diaphragm types.
| Identifier | ExFiles\Box 179b\2\ img229 | |
| Date | 14th December 1932 | |
| HS{Lord Ernest Hives - Chair} 795 J III REAR 40/40 Lb NS{Norman Scott} 3497 LEATHER PISTON TYPE 1" STROKE BALL PIN LOAD LB EXTERNAL PRESS LB/D' 540 R.P.M. 360 R.P.M. 180 R.P.M. 90 R.P.M. CUP LEATHER PETROL PUMP DIAPHRAGM TYPE 1" STROKE BALL PIN LOAD LBS EXTERNAL PRESS LBS/D' 540 R.P.M = 1.5 FT/SEC 360 R.P.M = 1.0 FT/SEC 180 R.P.M = .5 FT/SEC 90 R.P.M. = .25 FT/SEC BURSTING PRESS 250 LBS/D' BLADDER AND AC. FABRIC | ||