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).
Drawing of a Torsional Vibration Indicator.
| Identifier | ExFiles\Box 63\4\ scan0140 | |
| Date | 4th April 1932 guessed | |
| TORSIONAL VIBRATION INDICATOR SECTION AA{D. Abbot-Anderson} B A .150 THREAD TO BE TAPPED THRO' CENTRE OF SLOT Hs{Lord Ernest Hives - Chair} 363 P S/M THREAD TO E76615 .200 SLIDING FIT Rd. 2.825 DIA 1.800 4.200 DIA BRASS .100 THICK TO REPLACE E78311 AND ACT AS BEARING FOR SPRING DRIVEN FLYWHEEL GROOVE FOR SPRINGS & RETAINING CIRCLET 7.250 DIA ±5 .500 .625 S/N INSIDE DIMENSIONS TO E 76615 .750 5.875 DIA 6.400 DIA VIEW IN DIRECTION B TAP 1BA SLOT 1/4 x 3/16 3.500 Rd +10 3.125 Rd -10 VIEW SHOWING PLATE FOR RETAINING DRIVING SPRINGS 6 HOLES 2BA C'SUNK FOR SECURING LOCKING PLATE P TO FLYWHEEL 8.000 DIA 6.000 DIA 30° 7.100 DIA 6.850 DIA ±5 6.900 DIA ±5 7.250 DIA ±5 DIA HERE .201-1 HARDENED .031 DIA HOLE .063 FROM END .750 .150 .062 .198 .062 1BA 2 OFF SCALE 2/1 S/N GRY{Shadwell Grylls} Hs{Lord Ernest Hives - Chair} 362 | ||