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).
Ongoing slipping issues with the 25 HP starter motor and potential solutions.
| Identifier | ExFiles\Box 61b\3\ scan0254 | |
| Date | 15th October 1931 | |
| X5620 Ry. from Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux} c: Wor.{Arthur Wormald - General Works Manager} c. Mr.Brock. Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux}1/AD15.10.31. 25 HP. STARTER MOTOR. We have still got trouble with slipping with the starter motor on the 25 HP. in service. We find that we can add .020" on the present total thickness of the cork washers without any alteration to the design. This would then give us a total thickness of .488 which would help to prevent slipping and add life to the cork washers. The added compression ratios are getting too high for the present motor to deal with. A stronger clutch spring is required. We believe Mr. Davis is dealing with this but at the moment we have heard nothing further. Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux} | ||