Proposed engine modifications and performance issues with vehicle 18-EX on rough roads.
| Identifier | ExFiles\Box 5a\1\ 01-page003 | |
| Date | 3rd January 1931 guessed | |
| (2) I regret to say that so much of what we are proposing i.e. bigger crankshaft and balance weights, longer con. rods and stronger crankchamber, add to the weight and cost, and we must watch extra carefully how we can save fractions of money and weight. ---- Here on these rough slow roads 18-EX. (4BHP.) shews most defects from torque reactions at 20 MPH. Possibly it would be better with softer mounting, which is agreed shall be done. It might also reduce the revs, at which they occur. Do you remember, or is it a frame function? R. {Sir Henry Royce} | ||
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).