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).
Weekly report from the Experimental Department listing submitted reports and detailing valve spring tests.
| Identifier | ExFiles\Box 80\3\ scan0154 | |
| Date | 2nd July 1913 | |
| Mr Johnson. Mr Royce. X290 Wor{Arthur Wormald - General Works Manager}/Hy{Tom Haldenby - Plant Engineer}5/L2713. July 2nd. 1913. Experimental Dept. B. Weekly Report for Week ending June 28th. Reports have been sent in on :- X.168 Steering Pivot F.2353 reduced in dia. at root of stub. X.562 Gear Box Brackets F.309 X.481 Float Feed Balancing Chamber. X.168 Steering Pivot F.3372 X.391 Michelin Jack. X.9 1 3/4" dia. Swan Neck Exhaust Pipe, compared with 2" X.451 Power tests of standard engine under various conditions. X.608 Special Daimler chassis. X.472 Tests of Valve Springs. This test was commenced but we had to break the driving tackle down to run some urgent pivot tests. We ran some springs tempered by ourselves. They were let down to 575° and up to the time of stopping had run 27 hours at 1000 revs per minute of camshaft without either breaking or taking a permanent set. | ||