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).
Notes on engine components including extra air pedal, cylinder, sleeve, and piston ring specifications.
| Identifier | ExFiles\Box 126\4\ scan0004 | |
| Date | 8th April 1910 guessed | |
| The extra air pedal simply short circuits the throttle in the piece 2-1/1" bore raised to the flanges No bracket for carburettor Cylinders.- Short of oil - poor grinding Sleeves - inner sleeve 5/132" thick. Inlet port 7/16" wide 120degs. angle Exhaust port 7/16" wide 100 degs. angle One bar across exhaust port Clearance inner to outer sleeve .0035" Outer sleeve 1/8" thick. Holes and grooves all round on the inner sleeve holes at the bottom and grooves all round the outside The cylinder top - double ring 1 1/4" wide in halves outer one pinned. Also three top rings not pinned - well oiled Piston rings double lapped joint | ||