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).
The engine bearing conditions of the Paris Trials Car B.S.G.A. after significant mileage.
| Identifier | ExFiles\Box 114\3\ scan0154 | |
| Date | 6th July 1937 | |
| To Hs{Lord Ernest Hives - Chair}, from Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} c.c. to Rm.{William Robotham - Chief Engineer} c.c. to Sr. c.c. to Hd.{Mr Hayward/Mr Huddy} c.c. to Pk. Levallois July 6th. 1937 RE. PARIS TRIALS CAR B.S.G.A. I have taken the opportunity to examine the condition of the bearings of the engine of this car after a mileage as follows, since they were dealt with, .002" nip being given to all the bearings. Main bearings No.1,2,3,4,5 & 6 - 9,731 miles. " " No.7. - 8,777 " Conn. rod bearings. - 9,215-6 " On all the conn. rods the .002" nip had disappeared and a slackness of approximately .0015" of the metal in the housing had developed. A slight slackness sideways could be observed. I could not detect any slackness in the main bearings. I would say in my opinion that this condition is very good with this type of bearing after the above mileage. It proves that Depots can forget the slackness trouble from one decarb to another, which means that the cost of attention to bearings can be brought in along with the cost of a decarb. Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} | ||