Performance of engine gears, a water pump, and exhaust fittings.
| Identifier | ExFiles\Box 11\2\ 02-page263 | |
| Date | 27th May 1929 guessed | |
| -2- Cont'd. {John DeLooze - Company Secretary} (4) ENGINE GEARS COMPRISING IDLER GEAR TO LOP E.77658 SOLID TYPE CAM WHEEL, FLEXIBLE COUPLING TO DRIVE TO LEC.2631. 'The timing gears have had a period throughout the 'Test where they have been noisy. This has not 'developed any worse. Two periods of rattles have 'developed i.e. 13 and 25 M.P.H. These two periods 'got rather bad and were noticeable towards the end 'of the test. In both cases the cause is the 'spring drive damping'. Remarks: This is a matter for the Experimental Dept. (5) WATER PUMP TO LOP.E.77661 LEC.2624 NITRO)ALLOY STEEL ROTOR SHAFT. 'We dismantled the water pump at 10,000 miles. The 'shaft was in good condition, very little wear had 'taken place, there was an absence of grooving. When 'dismantled the shaft was well lubricated. We have 'not noticed any water leak from the gland. Remarks: If the shaft has not already been instructed in Nitra-alloy, this should be done at once. (6) EXHAUST FITTINGS N.S. 2624 COMPRISING PRINCE OF WALES FEATHER TYPE CAST MANIFOLD TO E.78779 REAR SILENCER ASSEMBLY TO E.78951. SLIDING JOINT AT JUNCTION BOX TO N.S. 26C4-5-6-7-8- FRONT EXPANSION CHAMBER AND DOWNTAKE PIPE LAGGED; SLIDING JOINT AT JUNCTION OF REAR SILENCER. 'We are very pleased to say that the exhaust system 'has not developed any serious trouble. The 'sliding joint at the junction of the rear silencer 'is the only part that requires attention. 'The joint requires strengthening. It has opened out 'and allows the exhaust to escape which has made the 'exhaust noisy. The exhaust pipe appeared at first 'as if it was going to give trouble. It came out 'of the joint approximately .625" but it has remained 'at this and no further distortion has taken place. 'We have not disturbed any lagging as no faults 'have appeared. The exhaust note generally in our 'opinion is passable. There is no excessive 'boom on the overrun. Cont'd | ||
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).