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 a front shock absorber spring.
| Identifier | ExFiles\Box 43\2\ Scan070 | |
| Date | 28th August 1925 | |
| 5834 / A DRAWING NO A7352 SEE ALSO THE FOLLOWING OPERATION DRAWINGS ALLOWABLE VARIATIONS TO SUIT MAKER WORKING LENGTH: 2.200 NONE LOAD AT WORKING LENGTH: 700 LB. ±25 LB. LENGTH TO WHICH SPRING MUST CLOSE WITHOUT PERMANENT SET: 2.100 NONE FREE LENGTH (MIN.): 2.600 DIA. OF WIRE: .238 NO. OF WORKING COILS: 7 MAX. ALLOWABLE O.D.: .990 MIN. ALLOWANCE I.D.: .500 THIS SPRING MUST PASS FREELY INSIDE A 1.000 DIA HOLE AND OVER A .495 DIA. BAR. ONE COIL AT EACH END TO BE CLOSED UP AND GROUND SQUARE. DRAWN BY: S.K.C. TRACED BY: G.E.C. CHECKED BY: C.W.S APPROVED BY: P.A.H. MODEL: 49/50 SEC.: 7/60 DATE: 8-28-25 SCALE: F HEAT TREAT BRINELL STANTON MACHINE ALL OVER MACHINE WHERE MARKED TITLE: FRONT SHOCK ABSORBER SPRING MATERIAL: S/I.WC SPECIFICATION: 205 NO. OFF: 2 STAMPED: OCT 14 1925 | ||