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).
Experimental Department 'B' weekly report for May 31st, 1913, detailing tests on various components including steering pivots.
| Identifier | ExFiles\Box 2\B002_X168\ 00000001-page107 | |
| Date | 3rd June 1913 | |
| From Exp. Dept. Copies for: Mr Johnson. Mr Royce. Wor{Arthur Wormald - General Works Manager}/Hy{Tom Haldenby - Plant Engineer}/L3513. June 3rd. 1913. Experimental Dept. "B" Weekly Report for May 31st.1913. Reports have been sent in on :- X.303 - Further tests with pressed steel silencer puzzle. X.406 - Gear changing on Napier Car. X.46 - Marston Radiator. X.70 - Find out why Daimler Engine is throttled in the carburetter. file Steering Pivots. - X.168 A report was sent in a week ago on the tests of a pivot which was undersize in the bottom of the U. section. The thickness was .28", the thickness should be .312" but they are passed at .29". The pivot tested lasted for 42 hours 25 mins before breaking. It was a Vickers forging heat treated by Vickers. We are now testing a second pivot which is .28" thick in the base of the U. section and this has run 26 hours so far and has just started to show a crack. This one is a Hughes Johnson forging, heat treated by ourselves. I do not know whether the steel or the treatment is different or whether the dies of the two makers give different sections | ||