Condition and performance of various vehicle components after testing.
| Identifier | ExFiles\Box 11\2\ 02-page257 | |
| Date | 1st February 1941 | |
| -6- 104 We find that on maximum bump the propellor shaft just fouls the cross member. The clearance with the car standing is 3.750 with a rear buffer clearance of 4.750" FRONT AXLE AND BRAKES TO LOP G 77305 MODIFICATION TO AXLE PIVOTS FOR AIR VESSEL TO NS {Norman Scott} 2756 GL {G. Linnett} 307 The O {Mr Oldham} /S brake drum was very much scored through the excessive braking. The brake linings became dry and the inside of the drums, brake mechanism was covered with black powder. Under these conditions squeaks were prevallant. We have since reduced the percentage of front braking which is giving us results equal to the present Phantom. The general condition of the pivot bearings, brake toggle bearings is very good. The lubrication of the pivots, side steering arm front ball ends has been quite ample. We took the restrictions out of the bijurs suppling the cross steering tube ball ends and with this arrangement ample lubrication has been supplied to them. We have since run 6000 miles without further trouble. Examination at the finish of milage there was a good film of oil on the contacts and spheres. We have lubricated the front axle every 500 miles. The Enots gun being screwed up until the back pressure was felt then released. CROSS STEERING TUBE TO LOP G 77482 NS {Norman Scott} 2797 This cross steering tube fouled the front shock dampers when brakes were applied and was the primary cause of the braking of the shock dampers. The new cross steering tube with the double set is quite satisfactory and does not foul the dampers. Passed for production. FRONT SPRINGS AND FITTINGS TO LOP F 79626 FIRTHS SILICO MANGANESE STEEL PIECE No F78791 TYPE 950 GROOVES AND OIL HOLES TO F 80467 NS {Norman Scott} 2787 We dismantled a front spring completly to examine the lubrication. The top and main leaves had a good film of oil the whole lengh, there was very little signs of scoring, no signs of rust, bedding of the leaves was fair. The three bottom leaves were rusty at the front ends and for approximetly four inches from the end. The rear portion had a light film of oil. There was no sign of fractures when examined. Shacle pins were well lubricated and showed little sign of wear. FRONT AXLE CONTROL DAMPERS TO LOP F 79507 NS {Norman Scott} 2794/5 2817. We have had two failures of the N/S damper, the case braking in the neck, the fractures being very similar to previous failures. The cause was chiefly due to fouling of the cross steering tube. We have carried out the various experiments with the loading of the dampers to Derby instructions. Full reports of these tests have been sent to Derby. The lubrication of the control arm has been satissfactory. no failures after fitting new cross steering tube. REAR AXLE LOP G76880 GL {G. Linnett} 316 II/41 1" HYPOID REAR BRAKES LOP G77232NS {Norman Scott} 2722 We cannot observe any failure of the axle casing from an outside examination. There has been a slight leak of oil from the pinion housing( the axle has developed a period at approximately 58 MPH and at 10-15 M.P.H. there is a period. | ||
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).