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 report on the performance and components of Unit No. 3, including power output and notes on tappets and timing gears.
| Identifier | ExFiles\Box 4\1\ 01-page245 | |
| Date | 21th January 1935 | |
| -5- No. 3 Unit received for test 17.1.35 to the specification RHC{R. H. Coverley - Production Engineer}/CP.1/EP.{G. Eric Platford - Chief Quality Engineer}21.1.35. This unit fitted with whitemetal main and lead bronze big end bearings, short duration camshaft E.86371 - 112° and E.84546 semi-split pistons. The operation of the self-adjusting tappets was quite satisfactory, having an up-to-date set, with cast-iron eccentrics on coppered shafts, oil metering plugs and correct plunger clearance. The maximum power developed was 178 BHP. at 3500 RPM. and 107 lbs/sq. MEP. at 2000 R.P.M. With regard to slow running, this unit is almost identical with No. 2, Hs.{Lord Ernest Hives - Chair}1536 camshaft even running obtained at 200-250 r.p.m. light, and 160-180 rpm. under load. As in the previous units, the water flow through the system is considerably restricted. The timing gears were very good on both Nos. 2 and 3 units with no whine and very little rattle. No. 3 Unit run for 15 hours and returned to RHC.{R. H. Coverley - Production Engineer} on the 24.1.35. Hs{Lord Ernest Hives - Chair}/L.H.Swindall. Out of a total of 7 months, the test bed was standing idle waiting for a unit for 2½ months, or 36% of the total time available. Hs{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} | ||