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).
Design of the Bendix Pinion, comparing its bearing and thrust design to American cars.
| Identifier | ExFiles\Box 180\M1\1\ img097 | |
| Date | 28th October 1921 | |
| To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to CJ. c. to H.{Arthur M. Hanbury - Head Complaints} c. to Da.{Bernard Day - Chassis Design} c. to BY.{R.W. Bailey - Chief Engineer} c. to EF. c. to Wor.{Arthur Wormald - General Works Manager} c. to Hy.{Tom Haldenby - Plant Engineer} ORIGINAL Hs{Lord Ernest Hives - Chair}1/L.028.10.21. GOSLANK 11. X4219 X1692 BENDIX PINION. We attached to Mr. Royce's copy of this memo, a blue print giving complete particulars of the Bendix Pinion as fitted to the Marmon Car. We notice with our design of Bendix that the thrust of the pinion is taken through the journal ball bearing. One would imagine that the engagement would cause a considerable shock on this bearing. We certainly ought to specify that it should be the deep groove type. In the case of the Marmon and other American cars, they all use plain and any thrust from the pinion is taken direct on to the motor bearings on the starter motor and cover. We have had trouble with the set screws which hold the ends of the torsion spring, working out. It is noticeable on the Marmon that they go to the trouble of fitting an extra little plunger which causes friction on the pinion. The only reason we can see for this is to prevent the pinion rattling and causing a noise. We would suggest that as we shall, undoubtedly, have to pay a royalty to the Owners of the Bendix Patents, we might get them to criticise our design of Bendix Drive. We think it would be unwise not to take advantage of all the accumulated experience they must have obtained. Hs.{Lord Ernest Hives - Chair} R R D 2287 300 11/19 D&S (D) 2191L | ||