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).
Instructions for an experiment on the double rear brake system using specifically worn ball bearings.
| Identifier | ExFiles\Box 1\6\ B001_X2 Double Rear Brakes-page063 | |
| Date | 6th September 1913 | |
| R.R. 300 (6s) (XX. 847. 29.5.13) E.P. 4342. ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Mr Normald Copy sent Mr Mathews 6:9:13 Order No.: Customer's No.: X2B Re.: Double Rear Brake Kindly instruct works to carry out the following experiment on Double Rear Brake. a/- Select two Ball Bearings as fitted to rear hub from repair scraps which have about .075" slack sideway, if these are not available grind two bearings slack with emery & oil artificially. b/- These bearings must be fitted as the Hub locating bearings i.e. on inside of wheel. c/- A bar as fitted must be run with brake applied so that any wheel is mounting obstruction as in our pivot test. Signed: OMRB Very Urgent This Sheet must be filed on completion of the work. | ||