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).
On the redesign and lightening of 25 HP torque reaction dampers.
| Identifier | ExFiles\Box 104\1\ scan0265 | |
| Date | 15th March 1935 | |
| x5005 To Sg.{Arthur F. Sidgreaves - MD} c. to Wor.{Arthur Wormald - General Works Manager} c. to E.{Mr Elliott - Chief Engineer} c. to By.{R.W. Bailey - Chief Engineer} Ha/GWH.{George W. Hancock - Head Chateauroux} 8/KW.15.3.35. 25 HP. Torque Reaction Dampers. We have tackled the lightening of the torque reaction dampers as the design received was not light enough. We have, by doing away with the heavy centre bolt, side plates and spring, reduced the centre plate thickness by half, and got the weight down by 35%. We are using star side spring plates to give us the necessary damping load. When the production of spring plates are known for spring rating, a distance piece can be fitted so that a constant load would be obtained without fear of overloading the spring plates. The dampers are to be fitted to 21-G-IV, but there is no reason, if they are satisfactory, why they should not be applied also to the Bentley. Ha/GWH.{George W. Hancock - Head Chateauroux} | ||