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).
Trouble with locking rings on Dunlop wheels.
| Identifier | ExFiles\Box 159\1\ scan0110 | |
| Date | 15th November 1923 | |
| V3725 Hm.{Capt. W. Hallam - Head Repairs} c. Wor.{Arthur Wormald - General Works Manager} c. BY c. Hs.{Lord Ernest Hives - Chair} c. Hd.{Mr Hayward/Mr Huddy} EP{G. Eric Platford - Chief Quality Engineer}/Mx{John H Maddocks - Chief Proving Officer}15/H15.11.23. re. Trouble with Locking Rings on Dunlop Wheels. Ref. Hm{Capt. W. Hallam - Head Repairs}/NRC{N. R. Chandler}14/D13.11.23. With regard to the above, we experienced a similar trouble on chassis on test about 2 1/2 years ago. At that time the cause was found to be due to the excessive thickness of the hub shell itself, which prevented the locking ring from bedding properly in its groove. This trouble was overcome by careful attention to the dimensioning of the hub shell at this point, and since then we have not experienced any trouble ourselves, nor have we any knowledge of any trouble on cars in service. We think the suggestion in your memo that the cause of the failure in this case has been due to the ends of the withdrawal ring digging in is a very likely cause of the trouble. EP{G. Eric Platford - Chief Quality Engineer}/Mx.{John H Maddocks - Chief Proving Officer} | ||