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).
Cause of 'spitting in silencer' being badly bedded butterfly throttles and a proposed fix.
| Identifier | ExFiles\Box 1\3\ B001_X 93-page95 | |
| Date | 17th October 1927 | |
| Y93 To Pt. from Hs{Lord Ernest Hives - Chair}/RM.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}5/LG17.10.27. SPITTING IN SILENCER. Y8990 The more we see of this complaint the more certain we are that in the main it is caused by badly bedding in butterfly throttles. We have observed that the Works have been leaving an unnecessary amount of end clearance for the butterfly and now the drawings are being altered to obviate this trouble. The fit of the butterfly can be tested by holding it up to the light. We suggest that you take a bad example and make a really good job of the throttle to satisfy yourself that it cannot be cured in this way. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||