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).
Request for G5 diaphragm assemblies for endurance testing and a discussion on material samples.
| Identifier | ExFiles\Box 149\4\ scan0196 | |
| Date | 19th February 1937 | |
| (Experimental Dept.) 1263 Rm{William Robotham - Chief Engineer}/JBD{John B. Dixon - Fuel Systems}12/M 19th February, 1937. The S.U. Company Ltd., East Works, Adderley Park, BIRMINGHAM, 8. Dear Sirs, For the attention of Mr. Leslie Kent. We should be obliged if you would send us a further 12 - G5 diaphragm assemblies for the Standard Pumps as we intend to run a further Endurance Test. I am enclosing a small sample of GACO synthetic rubber impregnated on to both sides of a fabric base which may interest you for diaphragm material. At present I have had a sample diaphragm running for 30 hours in cold Ethyl petrol. We have also had a sample in Pyridene but though it increases in thickness the fabric appears to prevent it increasing in length. Thus so far it shows promise and should be worth following up. I would be glad if you could hold up the faulty G5 pumps which are returned from outside or the Works and let me know when there are a sufficient number to justify a visit to inspect them. You will remember we made the arrangement just before the change-over of the diaphragm but owing to the extra work it involved as well as the delay, this was not carried out. Yours faithfully, For ROLLS-ROYCE LTD. | ||