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).
Decision to fit heavier flywheels on the 20/25 HP chassis to resolve engine period issues.
| Identifier | ExFiles\Box 103\1\ scan0170 | |
| Date | 5th March 1935 | |
| Sft{Mr Swift}/Alr. Goodall. c. Mx.{John H Maddocks - Chief Proving Officer} c. Hs.{Lord Ernest Hives - Chair} x5300 Rm{William Robotham - Chief Engineer} BY/Cgh.{W Clough}14/G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 5.3.35. 20/25 HP. CHASSIS - HEAVIER FLYWHEEL. With reference to the heavier type flywheels which you are producing by leaving on as much metal as the forgings will permit, in view of the trouble experienced by Mx.{John H Maddocks - Chief Proving Officer} with the lightened type flywheels introducing engine periods we have discussed the matter with the Experimental Department, and it is considered advisable to allow the heavy flywheels to be fitted on production engines. In the meantime, we hope Mx.{John H Maddocks - Chief Proving Officer} will be able to carry out tests (within the next few days) in order to see how much improvement is obtained, also that no other snags arise. BY/Cgh.{W Clough} | ||