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).
List of urgent design work for cars, detailing potential improvements to the petrol pump, carburetter, gearbox, and shock dampers.
| Identifier | ExFiles\Box 55\4\ Scan396 | |
| Date | 20th May 1930 | |
| Rg.{Mr Rowledge} E.{Mr Elliott - Chief Engineer} ) FROM R.{Sir Henry Royce} Da.{Bernard Day - Chassis Design} HS.{Lord Ernest Hives - Chair} ) C. Sg.{Arthur F. Sidgreaves - MD} Wor.{Arthur Wormald - General Works Manager} C. By.{R.W. Bailey - Chief Engineer} F.{Mr Friese} X235 RL/M20.5.30. DESIGNING WORK. LIST IN ORDER OF URGENCY CARS. X.2917. X.5770 X.523 X.7770 X.235 PETROL PUMP To simplify system and reduce cost (P.2) and avoid effect of autovac on carburation (25 HP) DOUBLE CARBURETTER Since Derby reports the increase of torque at slow speeds. The reason why we must make our own is to be exclusive, and to provide a mixture strengh control, also we can quickly take advantage of improvements. Add to this long duration cams with slightly increased compression ratio and we get 15% more power at all speeds. CHANGE GEAR. We must at least have a more easily obtainable 3rd. gear. The Maybach scheme is already within our immediate reach, but I have turned down schemes which apply to one gear only as being insufficiently perfect for any length of time, so we are working (Da{Bernard Day - Chassis Design}/Hdy{William Hardy}) on our own epicyclic. This makes the performance better in traffic, acceleration and hills. HYDRAULIC SHOCK DAMPERS (a) I have always thought these should be one way to some extent, probably 50% up to 100% down - i.e. at the moment the down should be increased. It is just possible that radiator jellying would be much less if the up were reduced. Test this at say 5% of down. (b) From time to time we have suggested soft c centring by valves or spring connection. Recently Mr.Hardy suggested a small air chamber for the same. Our schemes were better than some which have been adopted, but we have not heard of any results. We have also suggested driver control by pneumatic or hydraulic means. | ||