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).
Experimental, grooved piston ring stop suggested by Mr. Royce.
| Identifier | ExFiles\Box 66\1\ scan0047 | |
| Date | 8th April 1925 | |
| X80240 Secret. DY.{F R Danby} c. Hs.{Lord Ernest Hives - Chair} c. GC. E7/H.{Arthur M. Hanbury - Head Complaints} 8.4.25. E.A.C. PISTON RING STOP. We send you herewith LeC./2046 showing a grooved type of stop recently suggested by Mr.Royce, whereby the gap between the piston ring end is reduced to .1, although the diameter of the head of the pin is .2 as per our present standard. Would you kindly instruct this experimentally. E.{Mr Elliott - Chief Engineer} | ||