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).
Bentley complaints regarding main bearing, rear wheel driving dog, and noisy axle issues.
| Identifier | ExFiles\Box 107\2\ scan0008 | |
| Date | 13th June 1936 guessed | |
| No.7. BENTLEY COMPLAINTS MAIN BEARING SINKAGE The new A.C. 2 material of high Brinell is a considerable improvement over A.C. 7. Will Depots please keep careful records of the behaviour of this material and quickly advise Works if trouble should arise. Works are strongly of the opinion that freedom from engine roughness should not be regarded as an indication that the main bearings are satisfactory, and GWH.{George W. Hancock - Head Chateauroux} reports that action is being taken to establish a standard oil flow test to determine the state of bearing clearances. Handwritten Note (Main Bearing): AC7 8/10 of main bearing sinkage 9 average mileage 17000 min 7,000. 3 1/2 litre latest models average 32000 miles KNOCKS IN REAR WHEEL DRIVING DOGS A Depot Sheet is being issued for dealing with axle knocks by fitting an improved type of hardened driver. This alteration entails a modification to the hub which can be applied to existing pieces. A floating stock of modified hubs will have to be carried by Depots. Handwritten Note (Driving Dogs): 82 pairs of driving & leased dogs fitted. C.N. 1 of 10 cars found with dog but splines & hubs worn causing knock. oversize dogs now fitted. Due to accurate position of fitting of new style dog and hub. to be held in suspense. NOISY AXLES A modification is to be introduced whereby the thrust bearing will be pre-loaded and existing bearings may be brought up-to-date in this connection by a grinding operation, which will be carried out at Ransome & Marles. Handwritten Note (Noisy Axles): Received 25 preloaded thrust brgs 9B2035 rejected 5. unsatisfactory. Lock taken up with Ransomes. | ||