Main bearing and big end failures in 3 1/2 litre and 4 1/4 litre cars.
| Identifier | ExFiles\Box 115\3\ scan0012 | |
| Date | 3rd July 1937 | |
| - 2 - Hd {Mr Hayward / Mr Huddy} /SB {Mr Bull/Mr Bannister} 6/HR.3.7.37. CH.NO. NAME. BIG END NO. MILEAGE. REMARKS. B.59-AE. Mrs. Greenall. 2. 39,178.X B.145-DK. Hardie. 5. 14,343. B.75-AE. Crossman. 6. 57,347.X B.103-CW. Mrs. Byron. 2. 32,900. B.58-DG. Headlam. 5. 23,000.X " " again. 5. 28,000. Hall's Metal failure B.161-DK. Clarke. 2. 17,000. B.19-AE. Barclay. 5. 20,000. B.131-DK. Paris. 5. 20,500. B.66-EF. " 5. 16,000. B.5-AE. " 5. 43,000. B.42-FB. Staniland. ? 31,846.X 3 1/2 LITRE MAIN BEARINGS. 5. We have had no main bearing failures, although when engines have been stripped for overhaul we have had to fit new main bearings to perhaps a dozen cars, as it would not have been policy to re-build the engine with the old bearings. Wear of the intermediate bearings has been the most noticeable feature. Paris have fitted new bearings on certain cars more as a precautionary measure than anything else. 4 1/4 LITRE BIG ENDS. 6. We have had six big end failures on 4 1/4 litre cars. These are all Hall's Metal. Two of these were on the same car - B.47-HM. {Capt. W. Hallam - Head Repairs} Hutton. 7. There have been no failures with large capacity oil pumps. 8. There have been no failures after attending to the main bearings. 9. We give below a list of 4 1/4 litre cars on which the big ends have failed. CH.NO. NAME. BIG END. NO. MILEAGE. REMARKS. B.14-HK. {Col. T. Harker - Sales} Dawson. 2. 11,642. B.47-HM. {Capt. W. Hallam - Head Repairs} Hutton. 5. 796. " " again. 2. 11,136. 2nd failure X B.74-GA. Paris. 2. 12,500.X B.192-HK. {Col. T. Harker - Sales} Groom. 5. 7,201.X B.123-GP. Palmer. 5. 18,176. -continued- | ||
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).