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).
Issues with brakes, Bentley carburation, Wraith tyres, and engine endurance test results.
| Identifier | ExFiles\Box 108\1\ scan0401 | |
| Date | 23th February 1938 | |
| 600a also 200a Rm{William Robotham - Chief Engineer}/IMW.{Ivan M. Waller - Head of Chateauroux} from Rm.{William Robotham - Chief Engineer} Rm{William Robotham - Chief Engineer}15/R.23.2.38. We have despatched the exhaust valves and valve springs to-day. If the brakes continue to give trouble, we contemplate sending Martindale out next week. About then we should have the final pieces for the Girling brakes on the back of the Bentley which he should be able to bring with him. Steadman, who tried the Bentley before it left England, said the carburation seemed to be weaker on this car than on the average Bentley, and weaker than on 3.B.IV which was fitted with radiator shutters. Next time you are in Paris you might borrow another induction pipe and carburetters from the Depot, and see whether these make any difference. We confirm that we should like you to run on the large tyres on the Wraith. On our endurance runs on the test bed, we have had some piston skirts come off at the equivalent of 10 to 12,000 miles road running. Therefore, after 10,000 miles, we recommend that you should chalk test the pistons for cracks to avoid smashing the engine up. This would also give you a chance of inspecting the big-end and main bearings. The second Delco-Remy distributor has now come to hand, and the governor was broken. Rm.{William Robotham - Chief Engineer} | ||