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).
Failures of steering and suspension components during endurance testing.
| Identifier | WestWitteringFiles\N\July1925-September1925\ Scan24 | |
| Date | 1st July 1925 | |
| R.R. 493A (50H) (D.B. 175 25-9-24) J.H.D. EXPERIMENTAL REPORT. -2- Expl. No. REF: Hs{Lord Ernest Hives - Chair}/LS/LGS.7.25. there is comparatively no strain upon this flange and bolts. Steering column supporting tube sheared through at drawn part, against bracket which bolts down on to frame member after running 55 hrs. 38 mins. New supporting tube fitted, this again shearing through at same position after a further run of 27 hrs. 42 mins. Steering pendulum lever sheared through after 50 hrs. 28 mins. This is the first time this lever has broken during the recent tests of 20 HP. chassis. BREAKAGE OF BUFFER SPRINGS IN SIDE STEERING TUBE. Front spring (shorter) = 31 hrs. 3 mins. (F.51863) " " 19 " 25 " " " 20 " 57 " " " 23 " 45 " Average life = 23 hrs. 50 mins. Rear spring (long) = 28 hrs. 38 mins. (F.51864) " " 39 " 0 " " " 37 " 32 " (still running and not broken on completion of test). Corners of flange on N.S. of 3rd. cross members broken off on running 40 hrs. 30 mins. contd :- | ||