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).
Feasibility and economics of standardising Girling Brakes on Bentley II and III models.
| Identifier | ExFiles\Box 120\2\ scan0139 | |
| Date | 22th January 1937 | |
| 1029 To E.{Mr Elliott - Chief Engineer} By.{R.W. Bailey - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to Hs.{Lord Ernest Hives - Chair} RM{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale}14/AP.22.1.37. GIRLING BRAKES. Although the Girling Brakes on 6.B.IV. are chiefly valuable in providing us with experience in this type of brake prior to making Bentley III., it has been hoped to standardise them on Bentley II. if they should prove satisfactory and if it was economical to do so. We are entirely without an approved design scheme for this, although certain recommendations have been made. We do not think at this juncture it is worth making any new scheme for the front brakes as the cost of dies for the new front axle, which is essential with Girling Brakes, would be considerable. It has occurred to us that the rear brakes now being designed for Bentley III. could be used on Bentley II. with the present front brakes. Now that we have a quotation of 19/- for a complete die cast rear case, as against the 38/6. material cost quoted by our Cost Office, the price drops from £3. 11. 0. per drum to less than £2. 0. 0., and this, coupled with the considerable saving elsewhere in the Girling system, makes this scheme an attractive proposition. We should also save 20 lbs. weight. We have demonstrated that the single pair of shoes in the rear drums is a feasible proposition. We must buy some more Girling Brakes soon, we only have one set now. Surely it is worth while to hasten the completion of the Bentley III. rear brake scheme so that we can try it out, and we shall be very glad if you would do so. Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale} | ||