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).
Design and fitting of a hand barring gear and pumps for armoured cars.
| Identifier | ExFiles\Box 182\M21\ img061 | |
| Date | 25th October 1920 | |
| Ref E1 / 68-10-20 (MISC R) R4/G2/10/20. 4 HAND BARRING GEAR. 25 OCT 1920 X.4195 RE ARMOURED CARS. Mr. Day was here yesterday, and as we found great trouble in getting a satisfactory barring arrangement by means of ratchets, owing to the difficulties of providing the safety device, we have decided that the gear drive on the edge of the flywheel is the most satisfactory arrangement, and have been able to arrange this in a way that will permit of its easy fixing at any time, providing that before the chassis leave the works the gear ring, as already in hand, can be fitted to the flywheel, and a certain number of holes can be drilled in the dashboard, and in the angle iron carrying the armature plate. These instructions will be in the hands of HY.{Tom Haldenby - Plant Engineer} we expect tomorrow, the 22nd instant. X.4197 We have also sent by Mr. Day this morning, the drawing of the R.R. air pump, and are relying on despatching the drive for same this evening. At the same time, you will remember that it was decided that we should go on with the Maxfield pump and its drive, which we hope will be in the hands of the Production D.O. by Monday next. The fitting of either of these pumps does not entail any serious alteration to the engine, so that either of these pumps can be fitted to an engine without particularly skilled labour, providing that certain small and quick operations are done to the engines before they leave the works. As far as I know I have personally finished with all the work on the armoured cars, and as we have been allowed to fit the rest of the accessories after the chassis are delivered, there should be no serious delay in the delivery of the chassis through the two items which were causing us anxiety. | ||