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 engine noise, clutch operation, and jacking system on experimental car 32-EX.
| Identifier | ExFiles\Box 123\4\ scan0251 | |
| Date | 21th April 1936 | |
| X1042 GRY{Shadwell Grylls}- Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} from E.{Mr Elliott - Chief Engineer} E.2/HP.21.4.36. re 32-EX. The above car develops a pronounced buzzing and rattling noise when starting from cold until the oil gets to the plungers, but this goes off fairly rapidly with the engine running at a moderate speed. This also occasionally occurs on 33-EX. I have ascertained that Swindell thinks this may be due to air accumulating over the oil system relief valves. It might be as well to try experimentally a small bleed pipe to confirm this. On 32-EX the dragging of the clutch suggests that we ought to have more separation and I really don't see why we should not increase the stroke of the clutch pedal by at least another inch. The higher initial starting position of the pedal is in use on all American cars and is not embarrassing since the operating position is further down the stroke. we can at least allow for more separation on the servo assisted clutch. I tried the jacks on this car to see if the front wheels locked as they did when I tried before. I failed however to raise the wheels off the ground as the pump moved freely without pumping after partially raising the car, and would not pump at all. It also remained in this state after releasing the oil pressure and trying again. It is rather disconcerting to find the jacks not working, and it might be as well to have them checked over. It would also be interesting to know if this car is fitted with the device for preventing the front brakes from pulling on with the front end of the car jacked up, as this will be required to facilitate wheel washing. GRY.{Shadwell Grylls} Please let me have your Comments. Rm{William Robotham - Chief Engineer} | ||