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).
S.U. pump failure on a Wraith 26.G.VI due to stiffened diaphragms after standing idle.
| Identifier | ExFiles\Box 149\4\ scan0395 | |
| Date | 31th August 1937 | |
| To SG.{Arthur F. Sidgreaves - MD} from Rm{William Robotham - Chief Engineer}/JBD.{John B. Dixon - Fuel Systems} c. Rm.{William Robotham - Chief Engineer} Rm{William Robotham - Chief Engineer}/JBD.{John B. Dixon - Fuel Systems}13/MH.{M. Huckerby}31.8.37. 126 3 In reply to No 6. item raised at SG{Arthur F. Sidgreaves - MD}'s Conference held on 24.8.37. The S.U. pump mounted on the dash on Wraith 26.G.VI which had been standing idle since the car left the works on 17.7.37, refused to start when required for test on 23.8.37. This was definitely due to stiffening of the diaphragms, and the pump was started with manual assistance. It ran very slowly for some time, then picked up petrol, and gradually resumed normal working. The pump had been fitted with a plug on the suction and an open delivery. This pump was fitted with G.5. oil silk diaphragms as standard and had been subjected to high under bonnet temperatures which had dried out the pumps. Rm{William Robotham - Chief Engineer}/JBD.{John B. Dixon - Fuel Systems} | ||