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).
Test results page showing endurance test observations and primary volt/ampere-speed curves.
Identifier | ExFiles\Box 48\3\ Scan082 | |
Date | 11th August 1926 | |
R.R. E.S.S. /100 T/ (S.H 139. 11-8-26) G 2800 -3- Contd. (7)h Endurance test :- Slight signs of tracking, and marks on segments which appear to have been due to small arcs. Platinum points slightly blackened. Light deposit of grey dust on H.T. ring insulating cheeks, and collector brush holder. (8) O.C. Primary volt-speed curve. Speed. Volts. Volts/Speed. 400 2.67 .00668 800 5.23 .00654 1200 7.46 .00621 1600 9.63 .00602 2000 11.64 .00582 2400 13.53 .00564 2800 16.00 .00571 3200 18.00 .00563 3400 19.00 .00559 (9) O.C. primary ampere-speed curve. Speed. Amperes. Speed. Amperes. 100 .85 1200 3.45 200 1.60 1600 3.59 300 2.15 2000 3.63 400 2.55 2400 3.69 600 3.00 2800 3.70 800 3.23 3200 3.75 1000 3.39 3400 3.75 Contd. | ||