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).
Comparative cost analysis memo regarding the use of Hoffmann ball bearings versus Timken bearings for a Bentley front wheel hub.
| Identifier | ExFiles\Box 88\5\ scan0057 | |
| Date | 26th May 1937 | |
| Handwritten Note: GRY.{Shadwell Grylls} After what Hickling said [Struck through: I favour the G.M. scheme.] If Timken taper rollers are considered, I should like to know. Rem. 256 Typed Content: e/Kb. Copy to [Struck through: Dev. By.{R.W. Bailey - Chief Engineer} Rm.{William Robotham - Chief Engineer} MHS. HMG.] E/Ev.{Ivan Evernden - coachwork}1/H.26.5.37. Re: FRONT WHEEL HUB - BENTLEY. It is desired to get a comparative cost between the use of Hoffmann ball bearings and Timken bearings in a front wheel hub. In order to do this we have made two schemes showing these alternative bearings applied to the proposed Bentley III. hub with the Dunlop type 52V. hub as used on the 2½-litre S.S. Jaguar. We would be glad to receive from you the cost analysis of these two schemes - N.Sch.5153 and N.Sch.5154. We would point out that in the case of the Timken bearing hub, fitting adjustment is required to get the correct end play whereas this is not the case with the original journal bearings. We enclose herewith prints of N.Sch.5153 Hub with Timken Bearings, and N.Sch.5154 Hub with Hoffmann Journal Bearings. E/EV.{Ivan Evernden - coachwork} Att: N.Sch.5153) Prints. N.Sch.5154) | ||