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 for special front and rear road springs for chassis No 23 EX.
| Identifier | ExFiles\Box 52\2\ Scan196 | |
| Date | 10th January 1930 | |
| TOP DRAWING: 31 5/8" CENTRES 12 3/4" CENTRES SPRING PAD 4" TOTAL DEPTH = 2.22" 5/32" THICK 22 1/2" 45" CENTRES 1 1/8" - 1050 LBS - FRONT SPRING . 2. OFF 7 PLATES SCALE HALF FULL SIZE BOTTOM DRAWING: 48 7/8" CENTRES 32 7/8" CENTRES 16 1/2" CENTRES SPRING PAD 3" TOTAL DEPTH = 2.41 33" 1 1/2" 2 1/2" TAPER 66 SPAN - 1150 LBS - REAR SPRING . 2. OFF 8 PLATES SCALE HALF FULL SIZE BOTTOM TITLE: SPECIAL ROAD SPRINGS FOR ROLLS ROYCE CHASSIS Nº 23 EX NOTE BOX: NOTE TAPERS ON PLATES WILL BE MADE AS LONG AS POSSIBLE. STAMPS: ROLLS-ROYCE, LIMITED PRINT ROOM. 16 JAN 1930 DERBY. THOS. FIRTH & SONS LTD SPRING DEPT TINSLEY 10/1/30 | ||