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 specifications for four different front and rear road springs.
| Identifier | ExFiles\Box 67a\1\ scan0266 | |
| Date | 10th March 1927 guessed | |
| CONDITIONS FOR SPAIN, PORTUGAL, ITALY POLAND & RUSSIA, AUSTRALIA, NEW ZEALAND SECTION 1 (Top Left): Header: BRAZIL & S. AMER, AUSTRIA, EGYPT Title: — 20 H.P. FRONT ROAD SPRING — Part Number: F.53583 Drawing Details: BUFFER F.54461, 1.950 +.300 -.300 CLEARANCE (FULL LOAD), BUFFER TO SPRING CLIPS, 18.000, 20.000 Specifications Table: UNLOADED CAMBER: 2.500 LOADED CAMBER: .500 (POS) WIDTH OF SPRING PLATES: 1.750 RATING (600 LBS): 300 LBS. PER 1" SECTION 2 (Top Right): Header: MALAY STATES, S. AFRICA Title: — 20 H.P. REAR ROAD SPRING — Part Number: F.53045 Drawing Details: 2.900 +.375 -.375 CLEARANCE (FULL LOAD) BUFFER TO AXLE BKT., BUFFER K.5811, PACKING K.6002, 28.000, 28.000 Specifications Table: UNLOADED CAMBER: 4.000 LOADED CAMBER: NIL (SPRING FLAT) WIDTH OF SPRING PLATES: 2.250 RATING (900 LBS. SPRING): 225 LBS. PER 1" SECTION 3 (Bottom Left): Title: — 40/50 H.P. FRONT ROAD SPRING — Part Number: F.71975 Drawing Details: 2.000 +.250 -.250 CLEARANCE BUFFER TO SPRING CLIPS (FULL LOAD), BUFFER F.72315, 21.000, 22.500 Specifications Table: UNLOADED CAMBER: 2.600 LOADED CAMBER: .250 (NEG) WIDTH OF SPRING PLATES: 2.000 RATING (1100 LBS. SPRING): 355 LBS. PER 1" SECTION 4 (Bottom Right): Title: — 40/50 H.P. REAR ROAD SPRING — Part Number: F.10563 Drawing Details: BUFFER K.5811, PACKING K.6006, 8.925, 2.900 +.500 -.500 CLEARANCE (FULL LOAD), BUFFER TO AXLE, 26.500, 26.500 Specifications Table: UNLOADED CAMBER: 1.900 LOADED CAMBER: 1.500 (NEG) WIDTH OF SPRING PLATES: 2.500 RATING (2,000 LBS. SPRING): 147 LBS. PER 1" | ||