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).
Worn parts found on a vehicle, with a mileage comparison of several 'Coshawk' cars.
| Identifier | ExFiles\Box 180\M1\2\ img010 | |
| Date | 7th May 1922 guessed | |
| contd:- -2- 6. Foot brake was worn out - all adjustment taken up. On examination we found the following parts badly worn:- 1. Differential pinions formed on axle shaft, badly worn. 2. Ball thrust races for axle pinion, badly worn. 3. Flats formed on rollers for rockers. 4. Flange for front cross member cracked. 5. The head of the centre bolt in N.S. rear springs worn badly. This spring had been moving about on the seating on the axle. The hole in the seating was elongated. 6. Steering pivot pin bushes and pins worn badly. 7. Spring shackles and bushes worn badly. 8. Shock absorber ball ends worn badly. 9. Pin joints on brake levers worn badly. When considering the condition of 5-Coshawk-11, we should also keep in mind the average experience gained by running other Coshawk cars. The approximate total mileage of Coshawk cars up-to-date is as follows:- 1-Coshawk-11 Open touring 11,000 miles. 2-Coshawk-11 " " 7,000 " 3-Coshawk-11 Limousine 3,500 " 4-Coshawk-11 Open touring 3,000 " run in France. 5-Coshawk-11 Gwynne all-weather 11,000 " " " 6-Coshawk-11 Open touring 4,000 " " " 7-Coshawk-11 Enclosed saloon 1,500 " " " ------- 41,000 Total mileage. ======= ENGINE. The condition of the engine in 5-Coshawk-11 after approx: 11,000 miles running at high speeds in France, is excellent. The only part which will need attention before building up for a further 10,000 miles test, is that we shall have to replace the rollers on the rockers because these have formed flats. The condition of the pistons, cylinders, bearings, valves, guides etc is excellent. contd:- | ||