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).
Concluding remarks on improvements to hydraulic cylinders, governor springs, and engine performance.
| Identifier | ExFiles\Box 37\1\ scan 305 | |
| Date | 4th May 1926 | |
| Contd. -5- RL/W4.5.26. CONCLUDING REMARKS. Controls ought to be casehardened and fitted up and maintained with the minimum slack possible. (1) Improvement to hydraulic cylinder (2) " collar (governor). (3) " lever pin (spring (plate instead of (split pin.) } See Lec.2242. This apparatus is of the greatest utility because it reduces detonations, improves acceleration, maintaining max. torque as speed drops, and luffing up, fuel consumption, and smooth engine, so it cannot be abandoned as an unnecessary refinement. It must be in full action within useful speeds. Gauges for setting and checking should be made. We prefer the bronze valve (not duralumin) and that we cancel the initial set in the governor springing. The governor springs will have most favourable rating and only be asked to equal governor force at 1000 gov. revs. therefore will not be over-stressed arranged as at present - merely thinner wire. Remember we still say graph 1. is nearly O.K. but 7-EX is not either O.K. or like graph 1., because governor springs appear too stiff by about 50%. I fear our output is like 7-EX. This not only had too stiff springs - both governor and return - but instead of no initial advance the relay lagged behind gov. quite a serious amount. This latter has been corrected by setting governor lever. R.{Sir Henry Royce} | ||