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).
Schemes for converting Phantom III and Bentley chassis to a duplicated petrol pump system.
| Identifier | ExFiles\Box 95\4\ scan0217 | |
| Date | 2nd November 1936 | |
| Steadman 35' Wkr Ru/SMD{J. Smedley} S/W and-Ws. from E.. c. Rms-By.{R.W. Bailey - Chief Engineer} Mr- Da.{Bernard Day - Chassis Design} L/JWHt Rm{William Robotham - Chief Engineer}/Dixon. E.1/HP.2.11.36. re Petrol Pumps. Replying to your memo Sg.{Arthur F. Sidgreaves - MD}11/E.30.10.36, it was decided to make schemes forthwith for converting Phantom III 25/30 and Bentley chassis to a duplicated pump system, fitted with tap, so that in the event of one pump breaking down the tap could be switched on to a reserve pump. In the case of the Phantom, this means duplicating the present double pump. In the case of the 25/30 and the Bentley, it was decided that these engines should be able to run on one half of the present Phantom pump, and would therefore only require two single pumps of this particular type. The intention is to fit a cork faced tap of the type we have previously used. There is more than one way of arranging the scheme of piping and the position of the tap relative to the pumps, but the design we have selected is one in which the present petrol pipe from the tank is brought to a 3-way tap and then branches out to the two pumps which have delivery leads connected together, and feeding through the usual flexible pipe to the floatchamber. We have carefully considered the advantages and disadvantages of the various methods of connection, and Rm{William Robotham - Chief Engineer} agrees with us that the scheme outlined is the best for our requirements. In each of the chassis involved we are endeavouring to mount the pumps and tap on a common base which can if necessary be rubber mounted, and is easily detached from the dashboard. It is agreed that we must still put these pumps under the bonnet as there is no suitable pump yet available which is capable of dealing with the conditions of pumping in the frame. It is hoped however that the duplicate pump will remain effective, and with the scheme we have selected for the | ||