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).
Recommendations and alterations for the sequence starter, including the actuator box switch and epicyclic gear.
| Identifier | ExFiles\Box 64\3\ scan0050 | |
| Date | 26th November 1925 | |
| X7650 To EY. from EFC. c. to RHC.{R. H. Coverley - Production Engineer} c. to EY/RD. EFC2/T26.11.25. X.8650. RE SEQUENCE STARTER. We have had from R.{Sir Henry Royce} a note (copy to EY.) R1/M24.11.25 containing new recommendations on the sequence starter. The design of the actuator box switch is to be fundamentally altered so that it cannot get in until the pinion is nearly in gear, and it cannot get out again until the pinion is nearly out of gear. This therefore cancels any instructions based on the previous design of actuator box unit, and no doubt RD. will give an entirely new set of instructions for this unit, the LeC. design of which may possibly be to hand this week. No alteration to the electrical windings of the starter motor is suggested, but there is an alteration in the reduction ratio of the epicyclic gear, so that there will have to be instructions from the D.O. by which RHC.{R. H. Coverley - Production Engineer} can alter the three motors which we at present have from the present reduction gear to the new one. As regards the double switch unit, there is no fundamental alteration to this, but it has already been arranged with RD. that the winding space for the heavy current winding will be more suitably utilised, the section of the strip being taken down to not less than equality with that of the field winding of the motor, and Contd. | ||