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).
Secret memorandum on the E.A.C. clutch and flywheel, noting it is heavier with more inertia than the 40/50 model, and requesting an investigation into weight and cost reduction.
| Identifier | ExFiles\Box 66\4\ scan0013 | |
| Date | 13th March 1935 | |
| X.8300 S E C R E T. R2/M13.3.35. To AJS. Hs.{Lord Ernest Hives - Chair} ) FROM R.{Sir Henry Royce} E.{Mr Elliott - Chief Engineer} BY.{R.W. Bailey - Chief Engineer} ) c. to CJ. RG.{Mr Rowledge} DA.{Bernard Day - Chassis Design} E.{Mr Elliott - Chief Engineer} A.{Mr Adams} C. CLUTCH & FLYWHEEL. I understand that this unit is :- (1) 80 lbs. heavier than present 40/50., and (2) has 25% more inertia, (which is good, but perhaps unnecessary). Will AJS. look into this to see if we can reduce (1) considerably, but only alter (2) down to the same as the 40/50., and also at the same time reduce the cost of materials or machining. We must keep on the lookout because vibration (torsionally) in the transmission may be more manifest with less inertia in the flywheel. R.{Sir Henry Royce} | ||