List of design notes and recommendations for various engine components, page 2.
| Identifier | ExFiles\Box 111\2\ scan0225 | |
| Date | 20th August 1937 | |
| - 2 - BY {R.W. Bailey - Chief Engineer} /Jnr. {Charles L. Jenner} 1/G.20.8.37. (9). On the off side far away from the exhaust. (10). Recommend 4 bearings and arrange the exhaust tappets each side of the bearings to minimise deflection, as these are the heaviest loaded, since they open against gas pressure. With the large diameter camshaft necessary, with flat followers, we can then try a cast shaft. It is only by having 4 bearings can we get a drive for the distributor and the petrol pump. (11). With a sheet metal sump, it must be simple, it is unsuitable for steadying exhaust systems, and carrying brake levers, so this will be kept in mind. (13). Ph.1. engine (Lec.1667) has 4 inlet and 4 exhaust ports, all on one side with push rods. The idea of the square inlet ports is that fuel raining off the top of the pipe drops to the bottom, and is immediately swept away instead of forming a puddle. (15). This works in well and almost for nothing driven from the end of the dynamo on the near side. (17). If we say that there is no need to dismantle the wheelcase on the chassis (outside slipper) then there are less limitations with the high engine mounting. Water Pump. With the power head we must have a water inlet gallery pipe with jets near the exhaust bends, this means that the pump be placed high up on front of the block, it looks possible to drive it by the fan belt making a triangular drive and adjustable for wear by moving the fan centre. Oil Level Gauge. Sg. {Arthur F. Sidgreaves - MD} won't have a dip stick and the sheet metal sump is not suitable for housing an indicator. Can we afford one of the Telegauge instruments ? Controls. We must simplify them, suggest wire for the choke and hand throttle and pull out knobs on instrument boards. + to hand ignition BY {R.W. Bailey - Chief Engineer} /Jnr. {Charles L. Jenner} | ||
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).