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).
Proposal to adopt a scaled-down Phantom III cross steering tube joint for the Bentley & 25/30 HP models, with a cost and weight analysis.
| Identifier | ExFiles\Box 87\5\ scan0194 | |
| Date | 8th April 1936 | |
| X 250 To E.{Mr Elliott - Chief Engineer} c. to WOP. c. to By.{R.W. Bailey - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to Ev.{Ivan Evernden - coachwork} c. to RHC.{R. H. Coverley - Production Engineer} Ha/TWH.23/KW.8.4.36. Bentley & 25 HP. Side & Cross Steering Tubes. Re RHC{R. H. Coverley - Production Engineer}/RH.{R. Hollingworth}1/ETM.2.4.36 and E/ev.{Ivan Evernden - coachwork}5/MB.4.4.36. We consider that, if any change is going to be made to the side and cross steering tube ends on the 25/30 and Bentley, we should adopt a scaled down version of the Ph.III type of cross steering tube joint. The following figures show our reasons for this :- Weight lbs. Cost per joint 25 HP. Cross Steering Tube Joint 2.31 £1. 3. 0d.approx. Bentley " " " 1.78 £1. 2. 3d. Ph.III " " " 1.63 £0.12. 0d. Sealed down Ph.III joint (estimated) 1.40 £0.11. 0d. The adoption of this joint would effect the following savings per car (3 joints). Weight Cost 25 HP. 2.17 lbs. = 34% £1. 15. 0d. Bentley 1.14 lbs. = 21% £1. 14. 0d. Concerning the detail points in RHC{R. H. Coverley - Production Engineer}/RH.{R. Hollingworth}1/ETM.2.4.36 - (1) Location of Ball Pin on Lever. We agree that it is difficult to determine whether the locking washer has entered correctly when assembling a ball pin on to a lever and considerable time can be wasted owing to this. However, we agree with the Design Dept. that an alteration to the limits or dimensions could overcome this at much less expense than an alteration to design as suggested, and consequent re-tooling on production. | ||