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).
Power and compression test results for Chassis 1177 with specially high compression.
| Identifier | ExFiles\Box 19\7\ Scan019 | |
| Date | 6th December 1909 | |
| R.R. 258a (100 T) S.H. 89. 22-7-20. G 2769 X.790 Power & Compressions. Compressions on Chassis 1177 (specially high). 83 to 89 lbs. by gauge and Horse-powers were Revs. HP. 1000 37.1 1250 42.5 1500 45.9 Engine not quite free and valve timing was not O.K. inlet valves having a minimum clearance of .001" Particulars supplied by Lowe 29.11.09 Recorded by 6.12.09. | ||