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 mounting, carburetion, clutch, and other components.
| Identifier | ExFiles\Box 5a\4\ 04-page102 | |
| Date | 28th August 1934 guessed | |
| -6- RUBBER MOUNTING OF THE ENGINE. The engine has dropped approximately .075" at the rear during the latter 5,000 miles. The bottom rubber block has compressed and bulged outwards, supporting the rear end of the gear box. The two rubber buffers have also distorted, and taken up a set, due to compression. The rear cross member has not distorted. Two new rubber blocks were cut and fitted to the front mounting, made no difference to the smoothness of the engine. BONNET. LOP. M.09512 NR.Sch.571. Bonnet tests with louvered and plain bonnet, shewed that the louvered bonnet gave a cooler temperature under scuttle and rear of engine. CARBURATION - NR. SU. Weakness of carburation has come about through air leaks on the induction system and valves not seating, due to the hydraulic tappets. The carburettor itself has given no trouble; the air silencer, since the fitting of the extra stay, has remained intact and does not vibrate. The suction pipe from autovac to carburettor has broken twice by the movement of the engine. A section has been cut out and replaced by a rubber tube. ROCKER COVER. The rocker cover had to be released before the air vent pipe could be removed. This has been altered. The three holding down finger nuts should have the retaining collar and spring similar to the Phantom to assist in removing the cover. OPERATION OF STARTING HANDLE LOP. M.09270 NR.Sch.608-593. STARTING HANDLE BRACKET ON FRONT CROSS MEMBER. The two swivel flaps are very difficult to operate. They should be lightly spring loaded, so that the dowel will easily dis-engage. CLUTCH. The clutch engagement has not been free from jaggers throughout the mileage. We have made sure that the stay bolts have been fully tightened up. The loose pins in the front stays from cross member to engine, were replaced by bolts and thoroughly tightened up, all of which gave no improvement. The effect of the jaggers were certainly decreased after the rear end of the gear box had been lifted. The loss of the floating back plate appears to be the cause of the grabbing effect. A fair amount of wear has taken place. The pedal has been reset twice, at 5,000 and 10,000 miles - total amount .500" | ||