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).
Request for performance data on two types of oil coolers, including cooling capacity, back pressure, and a strength comparison.
| Identifier | ExFiles\Box 131\1\ scan0137 | |
| Date | 20th September 1935 | |
| X /11/5 To Hs{Lord Ernest Hives - Chair}/Std. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}11/KW.20.9.35. We have never had any statement of the relative cooling capacity and B.T.U's per minute of the two types of oil cooler. We also require the back pressure set up by the coolers respectively with oil having a viscosity which corresponds to the viscosity of Castrol XL at 0°C. We furthermore require a figure of merit with reference to the strength of these oil coolers compared with the Buick oil cooler. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||