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).
Test summary comparing different cylinder liner schemes and the effects of honing on distortion.
| Identifier | WestWitteringFiles\V\December1930-February1931\ Scan014 | |
| Date | 4th November 1930 | |
| -2- Hs{Lord Ernest Hives - Chair}/ACL/AL.L.1/AL.4.11.30.Contd. quite good and a decided improvement over the standard liners which were run in three other bores for comparison. There appeared little difference between the schemes (2) and (3) i.e. the reduced base flange and raised rubber ring. If anything perhaps there was a slight advantage in favour of the raised rubber ring. However these two schemes were a slight improvement over the standard liners but not so good as the liners that were honed in position. It must be remembered the comparison of the above schemes is based upon the markings at the base of the liners. A point of interest observed during the honing with liners in position was that distortion was shewn up at the start of honing by four bright patches at the base under the holding down bolts and the hard band round the base. SUMMARY. This test shewed that some of the distortion at least is due to the initial holding down tension. Honing in position restores the true surface and is an improvement in avoiding heavy bedding and scores at the cylinder base. The raised rubber ring and reduced foot also offer a slight improvement. We should say that neither scheme goes quite far enough and we are now testing further modifications including the reduced diam. band at the base to give considerably greater clearance between/the cylinder block. base of HS{Lord Ernest Hives - Chair}/ACL. | ||