Modifications and performance of various engine and chassis components.
| Identifier | ExFiles\Box 11\5\ 05-page052 | |
| Date | 10th April 1934 guessed | |
| (3) carburetter. The oil guard in the rocker cover was too long which brought the inlet toe near the oil on the surface of the cylinder head, also being at the side of the cover oil draining was sucked into it. We have lessened its height by .300" and made the inlet aperture at the opposite end of the guard, taken out the two steps set at an angle, and in their place fitted a straight piece of metal to within .500" of the top. PETROL TANK LOP.F.85553. R.R.3932-3934. R.R.SCH.634. incorporating sealed filler and separate vent. The sealed filler and separate vent successfully keeps the petrol from splashing out on to the bodywork. The tank and fixings have given no trouble. PEDALS LOP.F.84264. R.R.SCH.531. OUTSIDE CLUTCH ADJUSTMENT. ADJUSTABLE FOOT PEDAL. The pedals have been free from vibration noises. Anchorage and bearings are in a good condition. RADIATOR AND SHUTTERS LOP.F.81407 & LOP.E.81007. LWC.3783 Incorporating Harrison Matrix. with M.RR964 Deidvery Bend from water pump/restriction plug LWC.3819 to prevent loss of water. The radiator efficiency has kept the average water temperature at 77°C; the maximum reached 85°C; the loss of water has been almost nil. One quart of water has been added during the mileage, the height of water in the top tank being 4.5" from the filler. STARTING CARBURETTOR CONTROLS LOP.L.84173. LWC.3741 - 3775. The scheme for preventing the starter carburetter opening whilst running is quite satisfactory. BALANCING CAM SHAFT 114° LOP.L.84368. R.R.SCH.545. LWC.3757. gears The fitting of the balanced camshaft has kept the engine quiet and free from rattles. WHEELCASE & FITTINGS. LOP.E.83692. The supply of oil to the ignition distributor and water pump drives is apparently too much. There has been a lack of oil from the water pump drive housing throughout the mileage. | ||
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).