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).
Technical memo about the performance of taking over-run thrust on a bevel pinion through the journal bearing on Gleason gears, compared with the Springfield method.
| Identifier | ExFiles\Box 49\2\ Scan127 | |
| Date | 9th September 1922 | |
| X3612 Da.{Bernard Day - Chassis Design} from Hs.{Lord Ernest Hives - Chair} c. to Hm.{Capt. W. Hallam - Head Repairs} Hs{Lord Ernest Hives - Chair}4/LG19.9.22. X4150 X3612 GLEASON GEARS. We have had no failure or any trouble whatever with the scheme of taking the over-run thrust on the bevel pinion through the journal bearing. This scheme has now been applied to well over 100 cars. One particular car which we have had under our observation - The Drivers' Demonstration Car, - this car has run approximately 22,000 miles since this was fitted and has given no trouble. We understand Springfield have not yet adopted the double thrust bearing but are using the journal bearing to take the reverse thrust on all their cars. They are not using the same design that we are using. We attach a blue print (to Da{Bernard Day - Chassis Design}'s copy) showing the Springfield method of allowing the journal bearing to take the thrust. This was explained in OY's memo. ref. OY2/G16.11.21 - copy sent to R.{Sir Henry Royce} The objection Springfield raised to the scheme we are using is that the wire ring locking device for the big nut was not sufficiently good. They considered that if there was any tendency for the journal bearing to turn, there was a chance of this nut coming adrift. Hs.{Lord Ernest Hives - Chair} | ||