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).
Page 2 of a technical note detailing specifications for an armature spring and pinion clearance, with proposals for future bench tests.
| Identifier | WestWitteringFiles\T\2January1929-June1929\ Scan167 | |
| Date | 1st May 1929 guessed | |
| contd :- -2- (9) Main armature spring D.71569 with .125" packing to give set up length of 3.700" and force of 5.05 lbw. (10) Pinion clearance from wheel in disengaged position to be .175" i.e., equal to the damper travel. Item (10) appears to be necessary to eliminate the possibility of bouncing back into gear contact on disengagement. It will call for, in the next rotors to be tested, an increase of total armature travel of .075 to .775 making the new travel of the armature relative to the damper equal to the width .600" of the pinion. This note will be followed up by a specification of items which we consider should be incorporated in the next motor for bench test. EFC. | ||