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 components including the horn, sub-frame, wings, frame ties, and undersheets.
| Identifier | ExFiles\Box 11\3\ 03-page233 | |
| Date | 20th July 1930 guessed | |
| -11- KLAXON HORN & FITTINGS TO L.O.P. F.80799.- We have long since felt the need of a new horn to replace the klaxon. It is practically useless for high speed driving, the note from the horn is not heard. The Klaxon horn also does not remain correctly set for more than a week at a time, the diaphragms continually crack and have to be changed. In respect of the klaxon horn fitted to this car, the bottom bearing worked loose and was lost on the road. We have also had to change a diaphragm. A temporary Delco-Rémy horn has been fitted, which gives off a high pitched note which we have found to be very useful. SUB-FRAME TO L.O.P. F.80782.- We have had during the mileage a failure of the rear sub-frame bracket attaching same to the frame. The rear flange of the bracket had torn completely away from the other portion. It gives the appearance of being very weak. The mounting of the body work to the sub-frame has remained intact, it appears to be quite satisfactory. WINGS AND WING STAYS TO L.O.P. F.80678.- The wings and wing stays have not given any trouble at this mileage. The stays have remained firmly attached to the frame and do not show any weakness at this period. FRAME TIES TO L.O.P. F.79474.- Upon examination of frame ties and cross members, we have not detected any weaknesses. UNDERSHEETS TO L.O.P. F.79442 - LeC 2789.- We have run with a front undershield cut away to allow more freedom for the air to get away after passing through the radiator as the fitting of the hydraulic dampers in the frame has practically blanked up the lower portion for air to escape. It has in no way made the engine dirty and no water has entered whilst driving in heavy rain storms and through pools of water. The Drawing Office have got full particulars of the undershield. We propose that it is not now necessary to fit the undershield under the gear box with the introduction of the totally enclosed clutch and gear box casing. We have run most of the mileage with it off (the reason being that the temporary exhaust pipe would not allow it to be fitted). The result is that we have observed that no dirt or water has been flung up, and no interference of the brake system has occured. The starter motor is the only unit which might require protection. We examined the inside of this and found it perfectly free from any dirt having entered. | ||