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).
Diagram showing the particulars of a successful dust cover design with measurements and assembly instructions.
| Identifier | WestWitteringFiles\O\2January1926-March1926\ Scan61 | |
| Date | 4th February 1926 guessed | |
| PARTICULARS OF SUCCESSFULL DUST COVER CLEARANCE .150" .550" CLEARANCE .040" .700" STANDARD CLEARANCE (.025") EXTRA FLANGE FIXED TO EXISTING DUST COVER BY 12 ALUMINIUM RIVETS EQUALLY SPACED, AND COUNTERSUNK ON THE INSIDE OF THE DUST COVER A PACKING RING .040" THICK IS FITTED BETWEEN THE FLANGE AND DUST COVER TO GIVE THE NECESSARY .040" CLEARANCE. | ||