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).
Road test report on a lightened Borg & Beck clutch after 266 miles in London traffic.
| Identifier | ExFiles\Box 129\3\ scan0115 | |
| Date | 18th February 1936 | |
| To E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to Hdy.{William Hardy} c. to Wor.{Arthur Wormald - General Works Manager} c. to Hs.{Lord Ernest Hives - Chair} X110 Ha/GWH.{George W. Hancock - Head Chateauroux}2/KW.18.2.36. 21-0-IV. Tests in London Traffic with lightened type Borg & Beck Clutch - 266 miles. Load on clutch pedal to depress - 37 lbs, as against 40 lbs. with present standard clutch. The car was driven in the London traffic for 4 days. We had no sign of clutch slip during this period. The measurement on the clutch pedal did not show any wear to have taken place. The engagement of the clutch was smooth up to the last day, when jaggering occurred with a quick getaway using second gear when clutch was half engaged. Further engagements did not reproduce the jaggering. Ha/G.W.Hancock. | ||