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).
Performance and condition of various vehicle components during a mileage run.
| Identifier | ExFiles\Box 5a\2\ 02-page344 | |
| Date | 18th December 1930 guessed | |
| -5- The friction load during the mileage run, remained fairly consistent. This setting is in an experimental stage and not final. AUTOVAC & PIPING to LCP F.56741 & F.56550. (1) Incorporating Autovac with reserve to Arrg t: F.54748. (2) Enot's Petrol Filter F.57482 incorporating Scheme 1260. Modified outlet position. The autovac has functioned satisfactory and a sufficient supply has been maintained under all conditions of driving. We have reported elsewhere re the piping. The Enot's Petrol Filter at this mileage has given entire satisfaction. There has been no trouble with the petrol supply. Examination of the filter shows a fair amount of foreign matter collected at the bottom of the retainer, and particles of fluff were adhering to the filter vanes. The modified outlet position shortens the petrol pipe, is neater and gives a more positive feed to the Carburetter. STEERING COLUMN AND BOX to LCP F.56880. C.TYPE STEERING. NICKEL PLATED FINISH. There has been no loss of oil from the steering box at this mileage. The Column and Steering mechanism appear to be in good condition. A slight rattle was in the controls before starting the mileage, this has not become any worse and would not be taken objection to. The nickel plating is in a good condition. SIDE STEERING TUBE to LCP F.06003. The Side Steering Tube is free from knocks. The friction poundage set to 5 lbs at 11" radius at the start of the mileage, had dropped to 2.75 lbs. the friction loss being 2.25 lbs. The rear loading springs are O.K. The contacts both front and rear have been amply lubricated. The friction load has again been set to 5 lbs. by the adjusting of the front ball contacts. CROSS STEERING TUBE to LCP S.53401. The Cross Steering Tube friction load was set to 11 lbs at 11" radius at the start of the mileage. This had dropped to 6.5 lbs the friction loss being 4.5 lbs. This has been reset to 11 lbs. The lubrication of the ball contacts had been ample. The cross tube was set to give .125" toe in of the front wheels. This has remained as set. With this setting the front tyres after a mileage of 4,500 do not show any uneven wear. STEERING. The steering has been selective and stable during the mileage. At the beginning of the test there were joggles of the steering wheel which would be taken objection to. With the fitting of the India Tyres and dropping the tyre pressure to 30 lbs. an improvement was obtained and during the latter part of the mileage it was considered too much | ||