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).
Oil leak in the Goshawk II propeller shaft, attributing it to a vacuum effect and proposing a solution.
| Identifier | WestWitteringFiles\G\September1921\ Scan5 | |
| Date | 1st September 1921 | |
| TO EY. from R.{Sir Henry Royce} Copy to CJ. # HS.{Lord Ernest Hives - Chair} X4255 ORIGINAL 1921 R8/G7/9/21. 2 RE "GOSHAWK II" PROPELLER SHAFT. RECEIVED You will see by the memo to Mr. Hives that we consider it is the vacuum which is pulling out the oil from the rear bearing covers, and we do not think that an inside felt would be of any use. It would have to be larger than the outside one, which is not practical. It would also cost money. If there is any pumping action round this corner it will either pump water in or throw oil out, so we must stop it pumping, and the only way to do this appears to be to destroy the vacuum. R.{Sir Henry Royce} | ||