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).
Radiator cooling issues, brake squeaks, and damper performance on specific chassis.
| Identifier | ExFiles\Box 19\3\ Scan324 | |
| Date | 7th May 1930 | |
| Hs.{Lord Ernest Hives - Chair} (Paris) From Rm.{William Robotham - Chief Engineer} x 772. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}10./MJ.7.5.30. RADIATORS. Sorry to hear that your car is not reasonably well cooled. We get conflicting reports from Hancock, as one day he says that his radiator temperature is 90°C and his air temperature is 22°C, and the next day he says that his air temperature is 25°C and his radiator temperature is 80°C. In any case he does not seem to be so badly off as you are, and probably his worst result was due to the filter becoming choked. We have looked up particulars and find that the radiator on 24-EX has exactly the same tubes in as the radiator on 18-EX, so that if there is any real difference between the two cars it must be in the thermostat or in the water circulation. It occurred to us that in left-handing the job, they may have slipped up on the water pump air passages and we are trying to get hold of the second left-hand chassis to do some work on this. Brake squeaks are pursuing their usual course at Derby and since your departure the Test have been practically free from them. Incidentally, our damper using two segments only, seems an unusually persistent cure but we are expecting results to be reversed any day. Rm.{William Robotham - Chief Engineer} | ||