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).
Endurance test results showing a seized distributor gear bearing, with primary volt-speed and ampere-speed curve data.
| Identifier | ExFiles\Box 49\5\ Scan220 | |
| Date | 10th December 1926 | |
| R.R. 2544 (100 T) S.H. 728. 10-12-26. G. {Mr Griffiths - Chief Accountant / Mr Gnapp} 2947 -3- Contd. (7) Endurance test :- After 10.5 hrs running, distributor gear bearing seized. Distinct signs of tracking. Fairly heavy tracking of contact-breaker earthing brush. Points slightly blackened round the edge, leaving a bright centre. (8) Primary volt-speed curve Speed. Volts. Volts/Speed. 400 3.49 .00873 800 6.31 .00788 1200 8.73 .00727 1600 11.10 .00694 2000 13.04 .00653 2400 14.75 .00615 2800 17.00 .00607 3200 18.70 .00584 3400 19.90 .00585 (9) O.C. Primary ampere-speed curve. Speed. Amperes. Speed. Amperes. 100 1.00 1200 3.23 200 1.70 1600 3.25 300 2.30 2000 3.30 400 2.50 2400 3.33 600 2.90 2800 3.34 800 3.10 3200 3.35 1000 3.18 3400 3.35 Contd. | ||