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).
Field report on the performance, mileage, and required maintenance for the Goshawk II vehicle.
| Identifier | ExFiles\Box 46\2\ Scan300 | |
| Date | 29th May 1922 | |
| COPY. Hotel de l'Ouest, Laval. May 29th 1922. Hs.{Lord Ernest Hives - Chair} from Hy.{Tom Haldenby - Plant Engineer} RE 6-GOSHAWK II. This car has run as follows:- On May 27th. 353 miles. " 28th 357. " Previous mileage. 8540 " Total mileage to May 28th. 9250. " The car is holding together well except for rattles of spring shackles etc. We require some more hardened washers to pack these with and should be glad if you will send on a supply of various thicknesses. We have only one top plate for the front spring left apart from the complete spring and it would be wise to send some more top plates which could be kept at Paris depot when we have finished here. Send also a supply of long centre bolts as these are often spoiled in taking off the riveted nut. The complete spring we have here is no use as it is much too light, although we could make use of the top plate in case of emergency. We have taken up the slack in the axle tie rod and will notice if it works loose again now it has bedded itself in. I wrote to Wallis at Paris asking him to bring a 40/50 to try over the same road as the Goshawk to compare the general riding and particularly the steering but there is not a car available. The brakes are working and wearing well except for the bad squeaking. No doubt the rings on the drums will prevent this. 7-Gos.II brakes do not squeak so far and we hope they will continue to be silent. We have made a test on 7-Gos.II regarding the oil consumption by removing the feed to the rocker shaft as suggested, but this does not make a very perceptible difference. There are many small oil leaks, particularly from the pump drive shaft. The cylinders are very wet each time we examine them and the excessive consumption of oil appears to be due to too much oil getting into the cylinders and going off through the exhaust. The general leaks about the engine are no worse than on some other Goshawks. I feel sure that this engine has been using too much oil from its birth, as it is very unlikely that something should alter just when we commence to check the consumption. It appears to be necessary to dismantle the whole engine and to rebed the crank to stop the spray from the bearings but we have not the time or the facilities here to do this. What do you think ? | ||