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).
Status update on the production and supply of high-pressure pumps and cost analysis for magnet pots.
Identifier | ExFiles\Box 149\4\ scan0320 | |
Date | 2nd June 1937 | |
To Rm.{William Robotham - Chief Engineer} POSITION OF THE HIGH PRESSURE PUMPS. The 24 ordered since October from the S.U. Co. They will deliver 6 pumps in a week to 10 days after receiving the magnetpots from R.R. These should be at their Works tomorrow. The remaining 18 are held up for case material which Hadfields have promised in 14 days, and subject to this promise they will let us have the pumps in a further 10 days. Subsequent order for Production. They state they hope to be able to supply 6 to 12 pumps per week in 4 weeks after the receipt of our order. If the order is adequate to warrant having dies made for the bodies they could have die cast bodies in 7 weeks - the cost of the dies would be £20. to £30. The improved finish of the die cast bodies would enable us to leave them plain and save enamelling which is not necessary when mounted on the Frame. This should save money as the sand cast bodies have to be hand finished before enamelling. I am drawing up a specification for these pumps but will leave the question of material for distance pieces until the tests on S2-EX. are completed. This pump is to run with one unit with brass rollers and the other with case hardened mild steel. RHC.{R. H. Coverley - Production Engineer} has given us costs for producing the magnet pots as below from solid bar:- s.d. Auto machine cost........... 2 0 Material 3" dia. X 3 1/4" long.......... 8 1/2 _____ 2 8 1/2 Estimated cost produced as forging - s.d. Machine cost................. 2 7 Forgings..................... 10 1/2 _____ 3 5 1/2 The forging is 9d. more expensive exclusive of tool costs. Rm{William Robotham - Chief Engineer}/JBD.{John B. Dixon - Fuel Systems} | ||