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).
Log sheet for a crankshaft endurance test for design 989.
| Identifier | ExFiles\Box 63\4\ scan0064 | |
| Date | 20th December 1929 | |
| MODEL CRANK TESTS. DES 989 WITH .295" WEBS. SPEED 300 R.P.M. STROKE 6" * TIMES MADE UP TO 9 A.M EACH DAY. | TIME STARTED | TIME STOPPED | DATE | TIME RUN PER DAY | TOTAL TIME | COUNTER READING | REMARKS | |--------------|--------------|-----------|------------------|------------|-----------------|------------------------| | 8.40 AM | | 20-12-29 | 20 MIN | 20 MINS | 0 | | | | 12.0 A.M. | 21-12-29 | 24 HRS | 24.20 | | | | | | 21-12-29 | 3 HRS | 27.20 | 491,400 | STOPPED FOR WEEK-END. | | 8.0 A.M | | 23-12-29 | 1 HR | 28.20 | | | | | 12.30 P.M | 24-12-29 | 24 HRS | 52.20 | | CHRISTMAS HOLIDAYS. | | | | 24-12-29 | 3HR. 30MIN | 55.50 | 1,005,740 | | | 8.0 A.M. | | 27-12-29 | 1 HR | 56.50 | | | | | 12.00 P.M | 28-12-29 | 24 HR | 80.50 | | | | | | 28-12-29 | 3HR | 83.50 | 1,507,090 | WEEK-END. | | 8.0 A.M | | 30-12-29 | 1 HR | 84.50 | | | | | 5.30 P.M | 30-12-29 | 9 HR 30M | 94.20 | 1,678,540 | | | 8.0 A.M | | 31-12-29 | 1 HR | 95.20 | | | | | 5.30 P.M | 31-12-29 | 8 HR. 30M | 103.50 | 1,864,160 | STOCKTAKING | | 8.0 A.M | | 2-1-30 | 1 HR | 104.50 | | | | | 5.30 P.M | 2-1-30 | 8 HR. 30M | 113.20 | 2,043,950 | | | 8.0 A.M | | 3-1-30 | 1 HR | 114.20 | | | | | 4.45 P.M | 3-1-30 | | 122.5 | 2,199,180 | CRANK BROKEN. 2,197,600 | | | | | | | | OIL TEMP 40°C | | ||