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).
Tests conducted on shock absorber discs made from various woods, including Beechwood, Teak-wood, and Hartford wood.
| Identifier | ExFiles\Box 51\4\ Scan078 | |
| Date | 24th October 1922 guessed | |
| -2- have been carried out. These tests were carried out with surfaces sand-blasted. Beechwood discs. 71 lbs. 13 ozs. required to move shock absorber set to work at 46 lbs. Teak-wood discs. 71 lbs. 13 ozd. required to move shock absorber at 46 lbs. Hartford wood discs - drained of lubricant. 79 lbs. 8 ozs. required to move shock absorber set to work at 46 lbs. We have submitted the lubricant to Mr. Hall to determine whether it is a natural lubricant or otherwise. GWH. {George W. Hancock - Head Chateauroux} | ||