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 banjo connections on the Bentley V induction system petrol pipes.
| Identifier | ExFiles\Box 99\1\ scan0033 | |
| Date | 29th November 1938 | |
| 408 To By.{R.W. Bailey - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation}18/JH.29.11.38. Bentley V.{VIENNA} Induction System. Petrol Pipes EB.4264. With reference to the petrol connections shown on the above drawing. There is a banjo connection to the float chamber, replacing the union, nut and nipple. The alteration became desireable, when we fitted the S.U. Auto Start Floatchamber, there not being very much space to spare for our usual nut and nipple. The banjo connection is an S.U. part and supplied by them. It is intended however, that with this type of connection, fibre washers should be used, and our experience with this material, is that it tends to shrink, but we are trying the fibre washers supplied by S.U. with the banjo connection. The use of aluminium washers as shown on the drawing is not practical, because the mounting of the floatchamber is such, that if sufficient pressure by spanner is exerted to prevent petrol leakage, it is possible to (a) Distort or damage the float chamber lid.{A. J. Lidsey} (b) Fracture the float chamber at its point of connection with the carburetter body. The design should reconsider this part, and we recommend that our usual nut and nipple connection should be retained if at all possible. Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation} | ||