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).
Guide illustrating the test for parallelism and concentricity of gearbox shafts.
| Identifier | ExFiles\Box 25\3\ Scan031 | |
| Date | 14th October 1911 | |
| (3) R.R. 235A (100H) (W 955 14.10.11) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2053 Conclusions arrived at in these notes. 1st test every car on completion for parallelism of crank "gear box shafts thus :- 1. Bad. not parallel but concentric x position of pins in coupling. 2. Gear box shaft very bad. Engine shaft neither parallel nor concentric. 3. Good. parallel but not concentric. 4. Excellent. parallel and concentric. 1 & 2. wear and rattle badly. 3. wears badly, but should not rattle. 4. wear well and should not rattle Watermarks: JOHNSON BOND 1804 MADE AT CROXLEY | ||