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).
Proposed 10% higher back axle ratio to gain 8HP and improve efficiency.
| Identifier | ExFiles\Box 19\1\ Scan130 | |
| Date | 20th October 1931 | |
| COPY. HS.{Lord Ernest Hives - Chair} } FROM R.{Sir Henry Royce} BY.{R.W. Bailey - Chief Engineer} } C. to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} X7120 R6/M20.10.31. X7120 27-EX. We think that since the acceleration is so good the back axle can be 10% higher. When at 90 MPH. you should gain 8HP. This would give better maximum speed, although it may not lap higher. It would reduce oil and petrol consumption, and save engine wear and stress, until blance weights can be fitted. R.{Sir Henry Royce} | ||