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).
Blueprint showing a cross-section of a damper for gear rattles.
| Identifier | ExFiles\Box 47\3\ Scan350 | |
| Date | 27th January 1932 guessed | |
| Hs{Lord Ernest Hives - Chair} 526 SPRING E78426 12 HOLES EQUALLY SPACED SCREW .250 DIA 26 TPI RH{R. Hollingworth} 8.000 DIA 6.900 DIA 4.800 DIA G 53658 5.100 FIT DIA HOLES TO COINCIDE WITH THOSE IN COUPLING FLANGE .275 .225 .275 .625 .075 12 HOLES EQUALLY SPACED .265 DIA E 53692 WITH THREADS LENGTH INCREASED TO 1.100 4.900 DIA FLYWHEEL +1 4.898 DIA HUB -1 6.300 DIA 7.450 DIA HUB TUBE MADE IN BRASS FLYWHEELS IN S/N TO BE HARDENED AND GROUND WHERE MARKED HH DAMPER FOR GEAR RATTLES | ||