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).
Test report on Buick type pistons and a trial of a Bentley 50 type cylinder head.
| Identifier | ExFiles\Box 155\2\ scan0168 | |
| Date | 17th November 1937 | |
| -4- Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}8/MH.{M. Huckerby}17.11.37. NO. 2 BED. B.4 UNIT. Complete tests on Buick type of pistons and then revert to standard Bentley assembly. Under these conditions run endurance of 25 hours at full throttle with an oil inlet temp of 130°C each hour as follows. 30 mins. at 4000 RPM. 25 " " 4250 RPM. 5 " " 4500 RPM. Single Cylinder. Trial of Bentley 50 type of cylinder head in comparison with standard. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||