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).
Responding to notes on issues with damper glands, fan speed, breather oil consumption, and the Autovac filter.
| Identifier | ExFiles\Box 5a\3\ 03-page224 | |
| Date | 15th May 1933 | |
| X5840 Mr. G.W. Hancock, c/o Hotel de France, Chateauroux, Indre, FRANCE. To Hs{Lord Ernest Hives - Chair}/GWH{George W. Hancock - Head Chateauroux}, from Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Ha/Rm.{William Robotham - Chief Engineer} 8/KT, 15.5.33. -------------------------------------------------------------- Thank you for your notes. (1) Damper Glands. We are concerned about the leakage from the dampers. The standard damper glands now on production are tallow impregnated instead of bees-wax. We are sending you out a set. We have found that the dampers sometimes stop leaking after they have had a short run. You might remember this when fitting the new glands. (2) Fan. We are somewhat surprised to hear that you are having trouble with slow running with the fan fitted, because it has exactly the same ratio as that on the Bentley. We should like you to make certain that the water pump is circulating satisfactorily. Our main object of reducing the fan size and speed on 18.G.IV. was to cut down the fuss and roar, which is very noticeable with these silent 3rd. and 2nd. speeds, and which comes largely from the fan. There is no objection to speeding up the fan as long as it remains quiet. We should like to know whether it does remain quiet, if not we shall have to try staggered blades. (3) Breather. We note what you say about the breather. We should like you to measure the oil consumption with the breather on and with the breather off. We did careful tests here which showed that the oil consumption was not affected by this particular form of breather, and we should therefore like confirmation that we are wrong. (4) Autovac Filter. We gather that you have not so far run into any trouble with the deletion of the autovac filter. Ha/Rm.{William Robotham - Chief Engineer} | ||