Performance graphs comparing a Leather Piston Type and a Petrol Pump Diaphragm Type.
| Identifier | ExFiles\Box 56\1\ Scan253 | |
| Date | 14th December 1932 | |
| BRITISH MADE J III REAR 40/40 LB NS {Norman Scott} 3497 LEATHER PISTON TYPE. Hs {Lord Ernest Hives - Chair} 795 14.12.32. 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 = 1.5 FT/SEC. R.P.M. 360 = 1.0 FT/SEC. R.P.M. 180 = .5 FT/SEC. R.P.M. 90 = .25 FT/SEC. R.P.M. BURSTING PRESS 250 LBS/D" BLADDER AND AC FABRIC. | ||
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).