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).
Record of failures from Bentley endurance tests, charted against hours run.
| Identifier | ExFiles\Box 82\4\ scan0239 | |
| Date | 26th February 1936 | |
| RECORD OF FAILURES. (BENTLEY ENDURANCE TESTS) CHART: HOURS RUN Timeline dates noted on the left side of the chart: 21-10-33, 20-4-34, 28-2-34, 8-1-35, 6-7-35, 8-8-35, 5-11-35, 6-11-35, 17-12-35, 4-1-36 FAILURE DETAILS: A - CONN-ROD BEARINGS 16: No 4 FAILED W/MT. 17: No 5 FAILED W/MT. 19: No 5 FAILED W/MT. 23: No 2 FAILED W/MT. 24: No 2 FAILED W/MT. 40: No 5 TIGHT R.R. LEAD-BRONZE. 58: No 3 FAILED, HALL'S METAL S/LC SHELLS. 61: No 4 & 5 CRACKED, HALL'S METAL S/LC SHELLS. 66: No 4 FAILED, HALL'S METAL S/LC SHELLS. 71: No 3 & 6 FAILED, HALL'S METAL S/LC SHELLS. 80: No 3 FAILED, R.R. LEAD-BRONZE. 93B: No 2 FAILED, HALL'S METAL (SOLID). B - MAIN BEARINGS 45: INTERMEDIATE BEARINGS FAILED W/MT. 48: INTERMEDIATE BEARINGS FAILED W/MT. 54: INTERMEDIATE BEARINGS FAILED W/MT. 55: ALL MAIN BEARINGS FAILED W/MT. 67: ALL MAIN BEARINGS FAILED, HALL'S METAL S/LC SHELLS. 78: No 4 MAIN BEARING FAILED, HALL'S METAL S/LC SHELLS. 95: No 7 MAIN BEARING CRACKED, HALL'S METAL (SOLID). 101: No 7 MAIN BEARING CRACKED, HALL'S METAL (SOLID). C - CLUTCH 76: BORG & BECK, (10") FRICTION PLATE CRACKED. 84: BORG & BECK (10") FINGER LOCATION STUD BROKEN. 93: BORG & BECK (11") FINGER LOCATION STUD BROKEN. 94: BORG & BECK (10") FINGER LOCATION STUD BROKEN. D - CONNECTING RODS 9: EX. 12396 DURAL, CAP BROKEN. 22: EX. 13552 DURAL, ROD BROKEN AT BIG END. 32: EX. 11746 MOD. TO E.B. 2224/5 BROKEN. E - CONN-ROD BOLTS. 27: E 55610 FAILED. S/N 2063. 52: EB 2222 FAILED. S/N 2063. F - CRANKCASES. 5: CRACKED, CENTRE MAIN BEARING WEB. 15: CRACKED, CENTRE MAIN BEARING WEB. 25: MAGNESIUM, CRACKED CENTRE BEARING WEB. 42: CRACKED THRO MAIN OIL FEED BOSS. 44: LOWER HALF, MAGNESIUM, CRACKED IN WEB. 47: CRANKCASE CRACKED E59917 MOD. TO EX. 18253. 91: CRANKCASE CRACKED E.B. 1300 MOD. TO EX. 18253. 97: CRANKCASE CRACKED EX. 19357 (SPREAD CYLHD. STUDS STIFFENED). G - DYNAMO 88: DYNAMO STRAP BROKEN, SINGLE STRAP TYPE. H - EXHAUST MANIFOLD. 4: MANIFOLD BROKEN. 11: MANIFOLD BROKEN. 13: MANIFOLD BROKEN. 20: MANIFOLD BROKEN. 39: MANIFOLD BROKEN. J - EXHAUST VALVES. 2: VALVE SEIZED IN GUIDE. 12: E.B. 165 S/VLY BROKEN. 72: E.B. 2586 K.E. 965 BROKEN. 77: E.B. 2586 K.E. 965 BROKEN. 81: EX. 18395 K.E. 965 SEIZED IN GUIDE. 83: E.B. 2586 K.E. 965 BROKEN. K - FLYWHEEL. 30: FLANGE SHEARED, LEC. 3674 - 100 SECTION & BOLTS. L - IGNITION 53: CONTACT BREAKER - FIBRE RUBBING PAD FAILED. 102: CONTACT BREAKER - FIBRE RUBBING PAD FAILED (DELCO-REMY). M - PIPES & FITTINGS 7: OIL PIPE TO No 2 MAIN BEARING. 21: OIL PIPE:- PUMP TO WHEELCASE BROKEN. 26: OIL PIPE:- WHEELCASE TO DYNAMO PINION BROKEN. 28: OIL PIPE:- PUMP TO WHEELCASE BROKEN. 29: OIL PIPE:- WHEELCASE TO ROCKERS BROKEN. 38: OIL PIPE:- PUMP TO WHEELCASE BROKEN. 41: OIL PIPE:- PUMP TO WHEELCASE BROKEN. 46: OIL PIPE:- GALLERY PIPE BROKEN. 64: OIL PIPE:- WHEELCASE TO ROCKER BROKEN. 74: WATER PIPE:- PUMP TO HOT-SPOT Y PIPE BROKEN. 75: OIL PIPE:- PUMP TO WHEELCASE BROKEN. 89: OIL PIPE:- WHEELCASE TO DYNAMO PINION BROKEN. 98: WATER PIPE:- PUMP TO HOT-SPOT Y PIPE BROKEN. N - PISTONS. 1: AEROLITE 1ST SET SEIZED No 10 CAM. 3: AEROLITE SEIZED No 10 CAM. 6: AEROLITE CRACK FLUTE TO HEAT BREAK SAWCUT. 8: E.B. 1026 CRACKED ABOVE GUDG. PIN BOSS. 10: E.B. 1299 CRACKED AT TOP OF RIBS. 18: E.B. 1299 CRACKED AT TOP OF RIBS. 37: AEROLITE (TYPE LIGHTWEIGHT) BORE CRACKS IN GUDG. PIN. 43: AEROLITE (K TYPE) CRACKED THRO' RING LANDS. 51: AEROLITE (K TYPE) CRACKED THRO' RING LANDS. 56: AEROLITE (K TYPE) CRACKED THRO' RING LANDS. 57: AEROLITE (K TYPE) CRACKED THRO' RING LANDS. 59: AEROLITE (K TYPE) CRACKED THRO' RING LANDS. 68: AEROLITE (K TYPE) CRACKED THRO' RING LANDS. 90: AEROLITE (O TYPE) CRACKED THRO' RING LANDS. 92: S.U. (B TYPE 122 ALLOY) CRACKS BELOW SCRAPER RING GROOVE. 96: AEROLITE (M TYPE) CRACKED THRO' RING LANDS. P - SPRING DRIVE. 14: FRICTION PLATE BROKEN. 31: FRICTION PLATE BROKEN. 49: FRICTION PLATE BROKEN. 62: FRICTION PLATE BROKEN. 65: FRICTION PLATE BROKEN. 79: FRICTION PLATE BROKEN. R - TAPPETS 63: No 6 INLET TAPPET SEIZED. S - VALVE SPRINGS 33: No 4. INLET SPRING BROKEN E.B. 175. 34: No 5 EXHAUST SPRING BROKEN E.B. 175. 35: No 1. EXHAUST SPRING BROKEN E.B. 175. 36: No 5 INLET SPRING BROKEN E.B. 175. 50: No 5 EXHAUST SPRING BROKEN E.B. 175. 60: No 3 EXHAUST SPRING BROKEN E.B. 175. 70: No 5 INLET & No 6 EXHAUST BROKEN E.B. 175. 73: No 5 INLET SPRING BROKEN E.B. 175. 85: No 6 EXHAUST SPRING BROKEN E.B. 175. 86: No 1 INLET SPRING BROKEN E.B. 175. 87: No 1 INLET SPRING BROKEN E.B. 175. 99: No 2 INLET SPRING BROKEN E.B. 175. 100: No 2 INLET SPRING BROKEN E.B. 175. T - OTHER FAILURES. 69: FAILURE NOT KNOWN, CONN. ROD SUSPECTED. STAMP: ROLLS-ROYCE, LTD. PRINT ROOM. 26 FEB 1936 DERBY. OTHER CODES: Print 30-1-36 | ||